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WO2025052539A1 - Body of valve assembly and method for manufacturing body of valve assembly - Google Patents

Body of valve assembly and method for manufacturing body of valve assembly Download PDF

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Publication number
WO2025052539A1
WO2025052539A1 PCT/JP2023/032355 JP2023032355W WO2025052539A1 WO 2025052539 A1 WO2025052539 A1 WO 2025052539A1 JP 2023032355 W JP2023032355 W JP 2023032355W WO 2025052539 A1 WO2025052539 A1 WO 2025052539A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow path
flow passage
gas
concave surface
valve assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2023/032355
Other languages
French (fr)
Japanese (ja)
Inventor
夏輝 岩本
庸仁 渡邉
一志 沼崎
直生 辻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JTEKT Corp
Original Assignee
JTEKT Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JTEKT Corp filed Critical JTEKT Corp
Priority to PCT/JP2023/032355 priority Critical patent/WO2025052539A1/en
Publication of WO2025052539A1 publication Critical patent/WO2025052539A1/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves

Definitions

  • the present disclosure relates to a valve assembly body and a method for manufacturing a valve assembly body.
  • Patent Document 1 discloses a valve assembly for controlling the flow of gas. Such a valve assembly is attached to the gas tank of a fuel cell vehicle, for example, to control the flow of hydrogen gas.
  • the valve assembly of Patent Document 1 includes a body having a gas flow path and multiple valve subassemblies attached to the body.
  • the valve subassembly includes a check valve that prevents hydrogen gas from flowing out of the gas tank, and a solenoid valve that controls the delivery of hydrogen gas to the fuel cell.
  • the gas flow path is partitioned by holes that extend linearly and includes multiple flow paths that intersect with each other.
  • valve assemblies such as those described above, it is desirable to simplify the structure and extend the service life.
  • a body of a valve assembly has a gas flow path including a first flow path and a second flow path.
  • the first flow path is configured to be connected to a gas tank that stores gas
  • the second flow path is configured to be selectively connected to any one of a plurality of external devices.
  • the plurality of external devices include a source of gas to be filled into the gas tank, and a consumer device that consumes gas delivered from the gas tank.
  • the second flow path includes a main flow path defined by a hole extending linearly, and a sub-flow path defined by a hole extending linearly and intersecting the main flow path.
  • the sub-flow path has an intersecting opening end that opens on an inner circumferential surface of the main flow path. A compressive residual stress is imparted to the peripheral portion of the intersecting opening end in the body.
  • a method for manufacturing a body of a valve assembly has a gas flow path including a first flow path and a second flow path.
  • the first flow path is configured to be connected to a gas tank that stores gas
  • the second flow path is configured to be selectively connected to any one of a plurality of external devices.
  • the plurality of external devices include a source of gas to be filled into the gas tank, and a consumer device that consumes gas delivered from the gas tank.
  • the second flow path includes a main flow path defined by a linearly extending hole, and a secondary flow path defined by a linearly extending hole and intersecting with the main flow path.
  • the secondary flow path has an intersecting opening end that opens on an inner peripheral surface of the main flow path.
  • a peripheral portion of the intersecting opening end in the body has a concave surface that is recessed with respect to a center line of either the main flow path or the secondary flow path.
  • the concave surface is configured such that an angle formed by the peripheral portion is larger than an intersecting angle of the secondary flow path with respect to the main flow path in a cross section including the center lines of the main flow path and the secondary flow path.
  • the manufacturing method includes a flow path forming step for forming the second flow path in the body, and a chamfering step for forming the concave surface on the peripheral portion.
  • a method for manufacturing a body of a valve assembly has a gas flow path including a first flow path and a second flow path.
  • the first flow path is configured to be connected to a gas tank that stores gas
  • the second flow path is configured to be selectively connected to any one of a plurality of external devices.
  • the plurality of external devices include a source of gas to be filled into the gas tank, and a consumer device that consumes gas delivered from the gas tank.
  • the second flow path includes a main flow path defined by a linearly extending hole, and a sub-flow path defined by a linearly extending hole and intersecting the main flow path.
  • the sub-flow path has an intersecting opening end that opens on an inner circumferential surface of the main flow path.
  • the manufacturing method includes a flow path forming step of forming the second flow path in the body, and a compression processing step of imparting compressive residual stress to a peripheral portion of the intersecting opening end in the body.
  • FIG. 1 is a cross-sectional view showing a schematic configuration of a body of a valve assembly of one embodiment and a valve subassembly attached to the body.
  • FIG. 2 is a schematic enlarged cross-sectional view of the body of FIG. 1 during the formation of a second flow passage;
  • 2 is a schematic enlarged cross-sectional view showing the pressure of hydrogen gas acting on an inner circumferential surface of a second flow passage of the body of FIG. 1 .
  • FIG. 2 is a schematic enlarged cross-sectional view of the body of FIG. 1 during compression processing of a second flow passage;
  • FIG. 2 is a schematic enlarged cross-sectional view of the body of FIG. 1 after compression processing is performed on a second flow passage;
  • FIG. 2 is a perspective view of a first portion of a second flow passage of the body of FIG. 1 as viewed from a second portion.
  • FIG. 2 is a schematic enlarged cross-sectional view showing an intersection between a first portion and a second portion in a second flow passage of the body of FIG. 1 ;
  • FIG. 2 is a perspective view of a third portion of a second flow passage of the body of FIG. 1 as viewed from the second portion.
  • FIG. 2 is a flowchart showing a procedure for manufacturing the body of FIG. 1 .
  • FIG. 8 is a schematic cross-sectional view of the second flow path in FIG. 7 during chamfering of the intersection portion.
  • FIG. 8 is a schematic cross-sectional view of the second flow path in FIG. 7 during chamfering of the intersection portion.
  • the valve assembly 1 shown in Fig. 1 is mounted on, for example, a gas tank 2 of a fuel cell vehicle.
  • High-pressure hydrogen gas for example, about 72.5 MPa, is stored in the gas tank 2.
  • the valve assembly 1 is selectively connected to any one of a plurality of external devices 3.
  • the plurality of external devices 3 includes a supply source 4 of hydrogen gas to be filled into the gas tank 2, and a consumer device 5 that consumes the hydrogen gas delivered from the gas tank 2.
  • the supply source 4 is, for example, a hydrogen station, and is connected to the valve assembly 1 via a pipe 6.
  • the consumer device 5 is, for example, a fuel cell mounted on an automobile, and is connected to the valve assembly 1 via a pipe 7.
  • the valve assembly 1 controls the flow of hydrogen gas to be filled into the gas tank 2 and the hydrogen gas to be delivered from the gas tank 2.
  • the valve assembly 1 includes a body 11 having a gas flow path, and a plurality of valve subassemblies attached to the body 11.
  • the gas flow path includes a first flow path 12 connected to a gas tank 2, and a second flow path 13 connected to an external device 3.
  • the plurality of valve subassemblies include, for example, a manual valve 14, a combination valve 15, a safety valve 16, a check valve 17, and an excess flow prevention valve 18.
  • the plurality of valve subassemblies may include any valve subassembly in addition to or in place of these valve subassemblies.
  • the valve assembly 1 may further include a fitting 19 for connecting a pipe 6 or a pipe 7.
  • the body 11 is made of, for example, a forged metal material.
  • the body 11 is, for example, a rectangular parallelepiped with a protruding portion.
  • the body 11 of this embodiment is a continuous one-piece product without any seams.
  • the outer surface of the body 11 includes a first side surface 11a, a second side surface 11b, a third side surface 11c, and a fourth side surface 11d.
  • the first side surface 11a and the third side surface 11c are, for example, parallel to each other.
  • the second side surface 11b and the fourth side surface 11d are, for example, parallel to each other.
  • the first side surface 11a and the third side surface 11c are, for example, perpendicular to the second side surface 11b and the fourth side surface 11d.
  • the body 11 has a number of mounting holes corresponding to the components to be attached to the body 11.
  • the multiple mounting holes include, for example, a fitting mounting hole 21 for mounting the fitting 19, a manual valve mounting hole 22 for mounting the manual valve 14, an integrated mounting hole 23 which is a first mounting hole for mounting the safety valve 16 and the check valve 17, and a combined valve mounting hole 24 which is a second mounting hole for mounting the combined valve 15.
  • the integrated mounting hole 23 has a safety valve mounting hole 25 to which the safety valve 16 is attached, and a check valve mounting hole 26 to which the check valve 17 is attached.
  • the fitting mounting hole 21 is, for example, a round hole and opens to the first side surface 11a.
  • the bottom surface of the fitting mounting hole 21 is, for example, a plane parallel to the first side surface 11a.
  • the manual valve mounting hole 22 is, for example, a round hole and opens to the second side surface 11b.
  • the bottom surface of the manual valve mounting hole 22 is, for example, a plane parallel to the second side surface 11b.
  • the integrated mounting hole 23 is, for example, a stepped round hole and opens to the third side surface 11c.
  • the safety valve mounting hole 25 is, for example, a round hole and opens to the third side surface 11c, which is the outer surface of the body 11.
  • the check valve mounting hole 26 is, for example, a round hole with a smaller diameter than the safety valve mounting hole 25 and opens to the bottom surface of the safety valve mounting hole 25.
  • a release hole 27 communicating with the outside is provided on the inner surface of the safety valve mounting hole 25.
  • the bottom surface of the check valve mounting hole 26 is, for example, a plane parallel to the third side surface 11c.
  • the combined valve mounting hole 24 is, for example, a circular hole and opens to the fourth side surface 11d.
  • the bottom surface of the combined valve mounting hole 24 is, for example, a plane parallel to the fourth side surface 11d.
  • the first flow path 12 includes a filling portion 31 that connects the integrated mounting hole 23 to the gas tank 2, and a delivery portion 32 that connects the combined valve mounting hole 24 to the gas tank 2.
  • the filling portion 31 and the delivery portion 32 are partitioned by the inner circumferential surface of one or more circular holes that extend linearly, for example.
  • the filling portion 31 opens, for example, to the inner circumferential surface of the integrated mounting hole 23.
  • the safety valve 16 and the check valve 17 are connected to the gas tank 2 via the filling portion 31.
  • the delivery portion 32 opens, for example, to the inner circumferential surface of the combined valve mounting hole 24.
  • the combined valve 15 is connected to the gas tank 2 via the delivery portion 32.
  • the filling portion 31 and the delivery portion 32 may be independent flow paths.
  • the flow path cross-sectional area of the filling portion 31 in this embodiment is larger than the flow path cross-sectional area of the delivery portion 32 over its entire area.
  • the cross-sectional flow area of the filling portion 31 may be the same as or smaller than the cross-sectional flow area of the delivery portion 32.
  • the second flow passage 13 includes a first portion 33, a second portion 34, a third portion 35, and a fourth portion 36.
  • the entire second flow passage 13, the fitting mounting hole 21, the manual valve mounting hole 22, the integrated mounting hole 23, and the composite valve mounting hole 24 are arranged in the same plane. In other embodiments, for example, at least a portion of the second flow passage 13 and the associated mounting holes do not have to be arranged in the same plane.
  • the first portion 33, the second portion 34, the third portion 35, and the fourth portion 36 are each defined by, for example, the inner circumferential surface of a straight-lined circular hole.
  • the first portion 33, the second portion 34, the third portion 35, and the fourth portion 36 are formed by drilling holes in the body 11 using a tool such as a drill.
  • the first portion 33 opens into the bottom surface of the fitting mounting hole 21 and extends linearly in a direction perpendicular to the first side surface 11a.
  • the first portion 33 has a first end that opens into the bottom surface of the fitting mounting hole 21 and a second end opposite the first end.
  • the first end of the first portion 33 is connected to the supply source 4 or the consumer device 5 via the fitting 19.
  • the first end of the first portion 33 is used as a common port 37 that is an inlet for hydrogen gas supplied from the supply source 4 and an outlet for hydrogen gas sent to the consumer device 5. Therefore, the second flow path 13 includes the common port 37.
  • the first portion 33 has, for example, a substantially uniform circular cross section throughout the entire extension direction.
  • the second portion 34 opens into the bottom surface of the manual valve mounting hole 22 and extends linearly from the bottom surface of the manual valve mounting hole 22 in a direction perpendicular to the second side surface 11b.
  • the second portion 34 has a first end that opens into the bottom surface of the manual valve mounting hole 22 and a second end opposite the first end.
  • the second end of the first portion 33 opens into the inner peripheral surface of the second portion 34.
  • the first portion 33 intersects with the second portion 34 so that its second end opens into the inner peripheral surface of the second portion 34. Therefore, the second portion 34 corresponds to the main flow path, the first portion 33 corresponds to the secondary flow path that intersects with the second portion 34, and the second end of the first portion 33 corresponds to the intersecting opening end.
  • the first portion 33 and the second portion 34 extend in a direction perpendicular to the first side surface 11a and the second side surface 11b, respectively, as described above, the first portion 33 is perpendicular to the second portion 34. That is, the intersection angle of the first portion 33 with respect to the second portion 34 is approximately 90°.
  • the inner diameter of the second portion 34 changes in a step-like manner with a boundary at a position on the rear side of the intersection position with the first portion 33 as a boundary. That is, the second portion 34 has a step portion.
  • the inner diameter of the small diameter portion located on the rear side of the step portion in the second portion 34 is smaller than the inner diameter of the large diameter portion located on the front side of the step portion.
  • Each of the large diameter portion and the small diameter portion of the second portion 34 has, for example, a substantially uniform circular cross section over the entire extension direction.
  • the inner diameter of the first portion 33 is smaller than the inner diameter of the large diameter portion of the second portion 34. As described below, the area of the second portion 34 that is in front of the intersection with the first portion 33 is blocked by the manual valve 14.
  • the third portion 35 opens, for example, into the bottom surface of the integrated mounting hole 23 (check valve mounting hole 26) and extends linearly from the bottom surface of the integrated mounting hole 23 in a direction perpendicular to the third side surface 11c.
  • the third portion 35 has a first end that opens into the bottom surface of the integrated mounting hole 23 and a second end opposite the first end.
  • the third portion 35 intersects with the second portion 34 so that its second end opens into the inner peripheral surface of the second portion 34. In other words, the second end of the third portion 35 opens into the inner peripheral surface of the second portion 34.
  • the second portion 34 corresponds to the main flow path
  • the third portion 35 corresponds to a secondary flow path that intersects with the second portion 34
  • the second end of the third portion 35 corresponds to the intersecting opening end.
  • the third portion 35 is perpendicular to the second portion 34. That is, the intersection angle of the third portion 35 with the second portion 34 is approximately 90°.
  • the third portion 35 is perpendicular to, for example, the small diameter portion of the second portion 34.
  • the third portion 35 connects the second portion 34 to the integrated mounting hole 23.
  • the third portion 35 has, for example, a substantially uniform circular cross section throughout the entire extension direction.
  • the inner diameter of the third portion 35 is approximately equal to the inner diameter of the small diameter portion of the second portion 34.
  • the fourth portion 36 opens, for example, on the bottom surface of the composite valve mounting hole 24 and extends linearly from the bottom surface of the composite valve mounting hole 24 in a direction perpendicular to the fourth side surface 11d. Therefore, the fourth portion 36 extends linearly in a direction parallel to the second portion 34.
  • the fourth portion 36 has a first end that opens on the bottom surface of the composite valve mounting hole 24 and a second end opposite the first end. The second end of the fourth portion 36 is connected to the second end of the second portion 34.
  • the fourth portion 36 communicates with the composite valve mounting hole 24.
  • the fourth portion 36 has, for example, a substantially uniform circular cross section throughout the entire extension direction. In this embodiment, the fourth portion 36 is provided coaxially with the second portion 34, for example, but in other embodiments, the axis of the fourth portion 36 does not have to coincide with the axis of the second portion 34.
  • the second flow path 13 connects the fitting mounting hole 21 (external device) to the combined valve mounting hole 24 (combined valve 15) and the integrated mounting hole 23 (safety valve 16 and check valve 17).
  • the path between the common port 37 and the fourth part 36 in the second flow path 13 is bent at a right angle only at one point between the first part 33 and the second part 34.
  • the path between the common port 37 and the fourth part 36 in the second flow path 13 is L-shaped.
  • the path between the common port 37 and the third part 35 is bent at a right angle between the first part 33 and the second part 34, and is also bent at a right angle between the second part 34 and the third part 35 so that the third part 35 moves away from the first part 33.
  • the path between the common port 37 and the third part 35 is crank-shaped.
  • the joint 19 is made of, for example, a metal material.
  • the joint 19 is, for example, cylindrical.
  • the joint 19 has a joint flow path 38.
  • the joint flow path 38 is defined, for example, by the inner circumferential surface of a linearly extending circular hole.
  • the joint flow path 38 extends linearly, for example, along the axial direction of the joint 19, and opens at both end faces of the joint 19.
  • the joint 19 is fixed to the joint mounting hole 21 by any fixing method, for example, screw fastening or press fitting.
  • the joint flow path 38 communicates with the first part 33.
  • One of the pipes 6 and 7 is connected to the joint 19.
  • the supply source 4 or the consumer device 5 is connected to the second flow path 13 via the joint flow path 38.
  • the manual valve 14 includes a manual valve housing 41 and a manual valve element 42.
  • the manual valve housing 41 is, for example, cylindrical.
  • the manual valve housing 41 is fixed to the manual valve mounting hole 22 by any fixing method, for example, screw fastening or press fitting.
  • the manual valve element 42 is, for example, columnar.
  • the manual valve element 42 is accommodated in the manual valve housing 41, for example, by screw fastening, so as to be movable along the second portion 34 of the second flow path 13 and to be able to hold its position within the manual valve housing 41.
  • the tip of the manual valve body 42 abuts against the step of the second part 34, restricting the flow of hydrogen gas between the first part 33 and the second part 34.
  • the tip of the manual valve body 42 moves away from the step of the second part 34, allowing the flow of hydrogen gas between the first part 33 and the second part 34.
  • the manual valve body 42 blocks the area of the second part 34 in front of the intersection with the first part 33.
  • the combined valve 15 is attached to the combined valve mounting hole 24.
  • the combined valve 15 has a solenoid valve section that functions as a solenoid valve, and a check valve section that functions as a check valve.
  • the solenoid valve section corresponds to the solenoid valve, which is a valve subassembly
  • the check valve section corresponds to the check valve, which is a valve subassembly.
  • the solenoid valve and the check valve are attached to the single combined valve mounting hole 24.
  • the combined valve 15 controls the flow of hydrogen gas between the delivery portion 32 of the first flow path 12 and the fourth portion 36 of the second flow path 13.
  • the solenoid valve unit controls the flow of hydrogen gas between the delivery portion 32 and the fourth portion 36.
  • the check valve unit is disposed between the solenoid valve unit and the fourth portion 36.
  • the check valve unit allows the flow of hydrogen gas from the delivery portion 32 to the fourth portion 36, while restricting the flow of hydrogen gas from the fourth portion 36 to the delivery portion 32.
  • hydrogen gas in the gas tank 2 is delivered via the fourth portion 36.
  • high-pressure hydrogen gas is prevented from acting on the solenoid valve unit.
  • the safety valve 16 has an inlet 43 that communicates with the first flow path 12 regardless of whether the check valve 17 is open or closed.
  • the safety valve 16 When the temperature of the safety valve 16 is equal to or lower than the threshold temperature, the safety valve 16 is in a closed state in which the hydrogen gas flowing into the inlet 43 is not released to the outside.
  • the safety valve 16 exceeds the threshold temperature, the safety valve 16 irreversibly changes from a closed state to an open state. In the open state, the safety valve 16 releases the hydrogen gas flowing into the inlet 43 to the outside via the release hole 27.
  • the threshold temperature is set in advance so that the pressure of the hydrogen gas in the gas tank 2 does not become excessive and damage the gas tank 2.
  • the check valve 17 is configured to prevent the backflow of the gas filled in the gas tank 2. Specifically, the check valve 17 regulates the flow of hydrogen gas from the filling portion 31 of the first flow path 12 to the third portion 35 of the second flow path 13, while allowing the flow of hydrogen gas from the third portion 35 to the filling portion 31.
  • the overflow prevention valve 18 is provided in the joint flow path 38.
  • the overflow prevention valve 18 is configured to restrict the flow of hydrogen gas when the flow rate of hydrogen gas flowing in a specified direction through the joint flow path 38 exceeds a predetermined amount.
  • the specified direction is, for example, the direction in which hydrogen gas is delivered from the gas tank 2 to the consumer device 5.
  • the overflow prevention valve 18 does not restrict the flow rate of hydrogen gas in the direction opposite to the specified direction, i.e., the direction in which hydrogen gas is filled from the supply source 4 into the gas tank 2.
  • the supply source 4 When hydrogen gas is filled into the gas tank 2, the supply source 4 is connected to the joint 19 via the pipe 6. When hydrogen gas is supplied from the supply source 4, the hydrogen gas flows into the check valve 17 via the joint flow path 38, the first portion 33, the second portion 34, and the third portion 35 of the second flow path 13. As described above, the check valve 17 is configured to allow hydrogen gas to flow from the third portion 35 to the filling portion 31, and therefore is in an open state. As a result, the third portion 35 communicates with the filling portion 31 of the first flow path 12. As a result, hydrogen gas is filled into the gas tank 2 via the filling portion 31. At this time, hydrogen gas also flows into the check valve portion of the combined valve 15 from the second portion 34 of the second flow path 13 via the fourth portion 36. However, the check valve portion is configured to restrict the flow of hydrogen gas from the fourth portion 36 to the delivery portion 32, and therefore is in a closed state. As a result, hydrogen gas does not flow from the second flow path 13 to the delivery portion 32.
  • a portion of the second flow path 13 is used as a hydrogen gas filling path and a hydrogen gas supply path.
  • a portion of the hydrogen gas filling path and a portion of the hydrogen gas supply path are shared. This simplifies the shape of the gas flow path compared to when the filling path and the supply path are independent of each other.
  • the second flow passage 13 is formed by drilling as described above, a tensile residual stress is imparted to the surface layer including the inner circumferential surface of the second flow passage 13.
  • the second flow passage 13 is formed by removing a part of the body 11 by tearing it off with the cutting edge 51 of a rotating tool. Therefore, when the second flow passage 13 is formed, a tensile stress acts on the surface layer of the second flow passage 13. As a result, a tensile residual stress is imparted to the surface layer of the second flow passage 13.
  • tensile stress acts on the surface layer of the second flow path 13 due to the pressure of hydrogen gas flowing inside. More specifically, when hydrogen gas pressure acts on the inner circumferential surface of the second flow path 13, the inner circumferential surface expands as shown by the two-dot chain line in FIG. 3. As a result, tensile stress acts on the surface layer of the second flow path 13. Furthermore, this tensile stress is superimposed on the tensile residual stress imparted when the flow path was formed, and a large tensile stress acts on the surface layer of the second flow path 13.
  • tensile stress is repeatedly applied to the surface layer of the second flow path 13 due to pressure changes accompanying the filling and discharge of hydrogen gas. More specifically, when hydrogen gas is being filled, the pressure of the hydrogen gas in the second flow path 13 changes from a low state to a high state as hydrogen gas flows into the second flow path 13 from the supply source 4. Hydrogen gas is filled every time the amount of hydrogen gas stored in the gas tank 2 decreases. Therefore, tensile stress is repeatedly applied to the surface layer of the second flow path 13 due to pressure changes accompanying the filling of hydrogen gas. Furthermore, when hydrogen gas is being discharged, the pressure of the hydrogen gas in the second flow path 13 changes from a low state to a high state as the combined valve 15 opens and hydrogen gas flows into the second flow path 13.
  • Hydrogen gas is discharged every time hydrogen gas is consumed by the consumer device 5. Therefore, tensile stress is repeatedly applied to the surface layer of the second flow path 13 due to pressure changes accompanying the discharge of hydrogen gas.
  • part of the filling path and part of the supply path are shared, so tensile stress acts on this shared part more frequently.
  • stress concentration occurs at the intersection of the second flow passages 13 in the body 11. More specifically, as shown in FIG. 1, stress concentration occurs at the peripheral portion 61 of the second end, which is the intersection opening end of the first portion 33, and at the peripheral portion 71 of the second end, which is the intersection opening end of the third portion 35.
  • the compression process may be a reaming process or a roller burnishing process.
  • the compression process is performed on the entire first portion 33, second portion 34, and third portion 35 of the second flow path 13. In other embodiments, for example, compression may be applied only to the peripheral portions 61 and 71.
  • the peripheral portions 61, 71 have first concave surfaces 62, 72 and second concave surfaces 63, 73.
  • the plane including the center line L1 of the first portion 33 and the center line L2 of the second portion 34 will be referred to as the first plane
  • the plane including the center line L2 of the second portion 34 and the center line of the third portion 35 will be referred to as the second plane.
  • the entire second flow path 13 is disposed within the same plane, and therefore in this embodiment, the first plane coincides with the second plane.
  • Figure 6 is a cross section of the body 11 cut by the first plane.
  • the cross section of the body 11 cut by the second plane, particularly the cross section near the peripheral portion 71, is omitted as it is similar to Figure 6.
  • the first concave surface 62 of the peripheral portion 61 forms an annular shape extending along the circumferential direction of the first portion 33 when viewed from a direction along the center line L1 of the first portion 33.
  • the first concave surface 62 is provided around the entire circumference of the peripheral portion 61.
  • the first concave surface 62 is concave with respect to the center line L2 of the second portion 34, which is the main flow path.
  • the first concave surface 62 is concave, for example, in an arc shape.
  • the second concave surface 63 of the peripheral portion 61 is provided continuously with the first concave surface 62.
  • the second concave surface 63 is provided only in a portion of the circumferential range of the peripheral portion 61, including the portion intersecting with the first plane.
  • the circumferential range in which the second concave surface 63 is provided is any range smaller than 180°, and is set to a range of, for example, about 60° to 150°. That is, the second concave surface 63 is in the shape of an arc extending along the circumferential direction of the first portion 33 when viewed from a direction along the center line L1 of the first portion 33.
  • the second concave surface 63 is concave with respect to the center line L1 of the first portion 33, which is the secondary flow path, in a cross-sectional view including the center lines L1 and L2 of the first portion 33 and the second portion 34.
  • the second concave surface 63 is concave, for example, in the shape of an arc.
  • the angle of the peripheral portion 61 before chamfering is approximately 90°, whereas the angle of the peripheral portion 61 after chamfering is an obtuse angle greater than 90°.
  • the first concave surface 62 and the second concave surface 63 have a shape such that the angle of the peripheral portion 61 is greater than the intersection angle of the first portion 33 with the second portion 34 in a cross section including the center lines L1, L2 of the first portion 33 and the second portion 34.
  • the peripheral portion 61 before chamfering is indicated by a two-dot chain line.
  • the first concave surface 72 is provided only in a portion of the circumferential range of the peripheral portion 71, including the portion that intersects with the second plane. That is, the first concave surface 72 of the peripheral portion 71 is in the shape of an arc extending along the circumferential direction of the third portion 35 when viewed from a direction along the center line of the third portion 35.
  • the circumferential range in which the first concave surface 72 is provided may be set, for example, similar to that of the second concave surface 63.
  • the first concave surface 72 is concave with respect to the center line L2 of the second portion 34, which is the main flow path, in a cross-sectional view including the center line L2 of the second portion 34 and the center line of the third portion 35.
  • the first concave surface 72 is concave, for example, in the shape of an arc.
  • the second concave surface 73 of the peripheral portion 71 is provided continuous with the first concave surface 72.
  • the second concave surface 73 is provided only in a portion of the circumferential range of the peripheral portion 71, including the portion intersecting with the second plane. That is, the second concave surface 73 is in the shape of an arc extending along the circumferential direction of the third portion 35 when viewed from the direction along the center line of the third portion 35.
  • the circumferential range in which the second concave surface 73 is provided may be set, for example, similar to that of the second concave surface 63.
  • the second concave surface 73 is concave with respect to the center line of the third portion 35, which is the secondary flow path, in a cross-sectional view including the center line L2 of the second portion 34 and the center line of the third portion 35.
  • the second concave surface 73 is concave, for example, in the shape of an arc.
  • the angle of the peripheral portion 71 after chamfering is an obtuse angle greater than 90°.
  • the first concave surface 72 and the second concave surface 73 have a shape such that the angle of the peripheral portion 71 is greater than the intersection angle of the third portion 35 with the second portion 34 in a cross section including the center line L2 of the second portion 34 and the center line of the third portion 35.
  • an unprocessed body which is the body 11 before a plurality of mounting holes and gas flow paths are formed, is prepared (step 101).
  • a plurality of mounting holes and gas flow paths are formed in the unmachined body (step 102).
  • the plurality of mounting holes and the first flow path 12 may be formed before forming the second flow path 13, or the plurality of mounting holes and the first flow path 12 may be formed after forming the second flow path 13.
  • the second flow path 13 is formed by a hole drilling process as described above.
  • the plurality of mounting holes and the first flow path 12 are formed by the same hole drilling process as the second flow path 13, or by a different process.
  • step 104 the second flow passage 13 is subjected to compression processing (step 103), and then, the peripheral edges 61, 71 of the first portion 33 and the third portion 35 are subjected to chamfering processing (step 104).
  • step 104 a tool 53 is inserted into the second portion 34 to form a first concave surface 62 on the peripheral edge portion 61.
  • a first concave surface 72 is formed on the peripheral edge portion 71.
  • a tool 53 is inserted into the first portion 33 to form a second concave surface 63 on the peripheral portion 61.
  • a tool is inserted into the third portion 35 to form a second concave surface 73 on the peripheral portion 71.
  • this manufacturing method may include any other steps before, during, or after steps 101 to 104. Next, the operation and effects of this embodiment will be described.
  • the second flow path 13 is configured to be selectively connected to either the supply source 4 or the consumer device 5, a part of the hydrogen gas filling path in the gas flow path and a part of the hydrogen gas supply path can be made common. This simplifies the shape of the gas flow path and simplifies the structure of the body 11 compared to when the filling path and the supply path are independent of each other.
  • the angle of the peripheral portion 61 is larger than the intersection angle of the first portion 33 with the second portion 34. Also, because the peripheral portion 71 has a concave surface, the angle of the peripheral portion 71 is larger than the intersection angle of the third portion 35 with the second portion 34. Therefore, for example, it is possible to suppress a sudden change in the cross-sectional shape of the peripheral portions 61, 71 along the second flow path 13. In other words, it is possible to reduce the stress concentration coefficient at the peripheral portions 61, 71. This makes it possible to reduce the stress acting on the peripheral portions 61, 71. As a result, fatigue failure is less likely to occur in the body 11, and the life of the valve assembly 1 can be extended.
  • the peripheral portion 61 has a first concave surface 62 that is concave with respect to the center line L2 of the second portion 34, and a second concave surface 63 that is concave with respect to the center line L1 of the first portion 33.
  • the second concave surface 63 is provided continuously with the first concave surface 62. This allows the stress concentration coefficient in the peripheral portion 61 to be suitably reduced compared to when the peripheral portion 61 has only the first concave surface 62.
  • the peripheral portion 71 also has a first concave surface 72 that is concave with respect to the center line L2 of the second portion 34, and a second concave surface 73 that is concave with respect to the center line of the third portion 35.
  • the second concave surface 73 is provided continuously with the first concave surface 72. This allows the stress concentration coefficient in the peripheral portion 71 to be suitably reduced compared to when the peripheral portion 71 has only the first concave surface 72.
  • the second concave surface 63 is provided only in a portion of the circumferential range of the peripheral portion 61, including the portion that intersects with the first plane. This reduces the effort required for chamfering compared to providing the second concave surface 63 over the entire circumference of the peripheral portion 61.
  • the stress concentration coefficient is maximum at the position of the peripheral portion 61 that intersects with the first plane, and gradually decreases as the distance from this position increases in the circumferential direction. Therefore, with the above configuration, the second concave surface 63 is provided in the portion of the peripheral portion 61 with a high stress concentration coefficient, thereby efficiently reducing the stress acting on the peripheral portion 61.
  • first concave surface 72 and the second concave surface 73 are provided only in a portion of the circumferential range of the peripheral portion 71, including the portion that intersects with the second plane. This makes it possible to efficiently reduce the stress acting on the peripheral portion 71 while reducing the effort required for chamfering.
  • peripheral portions 61, 71 are given compressive residual stress. Therefore, the tensile stress acting on the surface layer of the gas flow path due to pressure changes accompanying the filling and delivery of hydrogen gas cancels out the compressive residual stress. This reduces the stress acting on the peripheral portions 61, 71.
  • the peripheral portion 61 may have only the first concave surface 62 or the second concave surface 63.
  • the peripheral portion 71 may have only the first concave surface 72 or the second concave surface 73.
  • the first concave surface 62 may be provided only in a portion of the circumferential range of the peripheral portion 61, including the portion that intersects with the first plane.
  • the second concave surface 63 may be provided around the entire circumference of the peripheral portion 61.
  • the first concave surface 72 and the second concave surface 73 may be provided around the entire circumference of the peripheral portion 71.
  • At least one of the chamfering and the compression may be performed on only one of the peripheral portions 61 and 71 . Only chamfering may be performed without performing compression on the peripheral portions 61, 71. In other words, as long as the peripheral portions 61, 71 have a concave surface, compressive residual stress may not be imparted to them.
  • the peripheral portions 61, 71 may be subjected to compression processing only without being chamfered. In other words, the peripheral portions 61, 71 may not have a concave surface as long as compressive residual stress is imparted to them.
  • the step of performing the compression process may be performed after the step of performing the chamfering process.
  • the first portion 33 does not have to be orthogonal to the second portion 34. That is, the intersection angle of the first portion 33 with respect to the second portion 34 may be an acute angle or an obtuse angle, for example, 30°, 45°, 60°, 120°, 135°, 150°, etc.
  • the third portion 35 does not have to be orthogonal to the second portion 34.
  • At least one of chamfering and compression may be applied to the connecting portion between the second portion 34 and the fourth portion 36 .
  • the second flow passage 13 may be formed in the body 11 by a process other than drilling.
  • the shape of the second flow path 13 can be changed as appropriate.
  • the third portion 35 may intersect with the second portion 34 so as to be arranged coaxially with the first portion 33.
  • the fourth portion 36 may be perpendicular to the second portion 34. In this case, at least one of chamfering and compression may be applied to the intersection between the second portion 34 and the fourth portion 36.
  • the inner diameter of the first portion 33 may be approximately equal to the inner diameter of the large diameter portion of the second portion 34, or may be larger than the inner diameter of the large diameter portion.
  • the inner diameter of the third portion 35 may be larger or smaller than the inner diameter of the small diameter portion of the second portion 34.
  • the valve assembly 1 may include a solenoid valve and a check valve independent of the solenoid valve instead of the combined valve 15. Also, the combined valve 15 may have only a solenoid valve portion and not a check valve portion.
  • the valve assembly 1 controls the flow of high-pressure hydrogen gas, but is not limited to this and may control the flow of gases other than hydrogen gas.
  • the valve assembly includes a plurality of valve subassemblies attached to the body, The body further includes a first mounting hole connected to the first flow path and the second flow path, and a second mounting hole connected to the first flow path and the second flow path,
  • the valve subassembly includes: A check valve attached to the first mounting hole; a solenoid valve attached to the second mounting hole,
  • the first flow path is a filler portion connecting the first mounting hole to the gas tank; a delivery portion connecting the second mounting hole to the gas tank;
  • the second flow path is a common port for inlet of gas supplied from said source and outlet of gas delivered to said consumer; a linear first portion extending from the common port; a linear second portion extending in a direction intersecting the first portion; a linear third portion connecting the first mounting hole to the second portion; a linear fourth portion connecting the second mounting hole to the second portion,
  • the check valve is configured to restrict flow of gas from the filling portion to the third portion and to allow flow of gas from the third portion to the filling
  • the concave surface may be provided only in a portion of the circumferential range of the peripheral portion, including a portion that intersects with a plane that includes center lines of the main flow path and the sub-flow path.
  • the flow passage forming step may include drilling holes in the body.

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  • Engineering & Computer Science (AREA)
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  • General Engineering & Computer Science (AREA)
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  • Fluid Mechanics (AREA)
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  • Electrochemistry (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A body (11) of a valve assembly (1) has a gas flow path including a first flow path (12) and a second flow path (13). The first flow path (12) is configured to be connected to a gas tank (2) for storing gas. The second flow path (13) is configured to be selectively connected to any one of a plurality of external devices (3). The second flow path (13) includes a main flow path partitioned by linearly extending holes, and a sub-flow path partitioned by the linearly extending holes and intersecting the main flow path. The sub-flow path has a cross-opening end that opens to an inner peripheral surface of the main flow path. Peripheral edges (61, 71) of the cross-opening ends in the body (11) have recessed surfaces that are recessed with respect to a center line of either the main flow path or the sub-flow path. The recessed surfaces are configured such that, in a cross-section including the center line of the main flow path and the sub-flow path, the angle formed by the peripheral edges (61, 71) is greater than the intersection angle of the sub-flow path with the main flow path.

Description

弁アセンブリのボディ及び弁アセンブリのボディの製造方法Body of a valve assembly and method for manufacturing the body of a valve assembly

　本開示は、弁アセンブリのボディ及び弁アセンブリのボディの製造方法に関する。 The present disclosure relates to a valve assembly body and a method for manufacturing a valve assembly body.

　例えば特許文献１には、ガスの流通を制御するための弁アセンブリが開示されている。こうした弁アセンブリは、例えば燃料電池自動車のガスタンクに装着されて水素ガスの流通を制御する。 For example, Patent Document 1 discloses a valve assembly for controlling the flow of gas. Such a valve assembly is attached to the gas tank of a fuel cell vehicle, for example, to control the flow of hydrogen gas.

　特許文献１の弁アセンブリは、ガス流路を有するボディと、ボディに取り付けられる複数の弁サブアセンブリとを備えている。弁サブアセンブリには、水素ガスがガスタンクから流出することを規制する逆止弁、及び水素ガスの燃料電池への送出を制御する電磁弁等が含まれる。ガス流路は、直線状に延びる孔によって区画されるとともに互いに交差する複数の流路を含んでいる。 The valve assembly of Patent Document 1 includes a body having a gas flow path and multiple valve subassemblies attached to the body. The valve subassembly includes a check valve that prevents hydrogen gas from flowing out of the gas tank, and a solenoid valve that controls the delivery of hydrogen gas to the fuel cell. The gas flow path is partitioned by holes that extend linearly and includes multiple flow paths that intersect with each other.

特表２０１５－５２３５０９号公報Special Publication No. 2015-523509

　上記のような弁アセンブリでは、構造の簡素化及び長寿命化が望まれている。 In valve assemblies such as those described above, it is desirable to simplify the structure and extend the service life.

　本開示の一態様によれば、弁アセンブリのボディが提供される。前記ボディは、第１流路及び第２流路を含むガス流路を有する。前記第１流路は、ガスを貯蔵するガスタンクに接続されるように構成され、前記第２流路は、複数の外部機器のうちのいずれか１つに選択的に接続されるように構成される。前記複数の外部機器は、前記ガスタンクに充填するガスの供給源、及び前記ガスタンクから送出されるガスを消費する消費機器を含む。前記第２流路は、直線状に延びる孔によって区画される主流路、及び直線状に延びる孔によって区画されるとともに前記主流路と交差する副流路を含む。前記副流路は、前記主流路の内周面に開口する交差開口端を有する。前記ボディにおける前記交差開口端の周縁部は、前記主流路及び前記副流路のいずれか一方の中心線に対して凹んだ凹状面を有する。前記凹状面は、前記主流路及び前記副流路の中心線を含む断面において、前記周縁部のなす角度を前記副流路の前記主流路に対する交差角よりも大きくするように構成される。 According to one aspect of the present disclosure, a body of a valve assembly is provided. The body has a gas flow path including a first flow path and a second flow path. The first flow path is configured to be connected to a gas tank that stores gas, and the second flow path is configured to be selectively connected to any one of a plurality of external devices. The plurality of external devices include a gas supply source for filling the gas tank and a consumer device for consuming gas delivered from the gas tank. The second flow path includes a main flow path defined by a linearly extending hole, and a sub-flow path defined by a linearly extending hole and intersecting with the main flow path. The sub-flow path has an intersecting opening end that opens on an inner circumferential surface of the main flow path. The peripheral portion of the intersecting opening end of the body has a concave surface that is recessed with respect to the center line of either the main flow path or the sub-flow path. The concave surface is configured such that an angle formed by the peripheral portion is larger than an intersecting angle of the sub-flow path with respect to the main flow path in a cross section including the center lines of the main flow path and the sub-flow path.

　本開示の別の態様によれば、弁アセンブリのボディが提供される。前記ボディは、第１流路及び第２流路を含むガス流路を有する。前記第１流路は、ガスを貯蔵するガスタンクに接続されるように構成され、前記第２流路は、複数の外部機器のうちのいずれか１つに選択的に接続されるように構成される。前記複数の外部機器は、前記ガスタンクに充填するガスの供給源、及び前記ガスタンクから送出されるガスを消費する消費機器を含む。前記第２流路は、直線状に延びる孔によって区画される主流路、及び直線状に延びる孔によって区画されるとともに前記主流路と交差する副流路を含む。前記副流路は、前記主流路の内周面に開口する交差開口端を有する。前記ボディにおける前記交差開口端の周縁部には、圧縮残留応力が付与されている。 According to another aspect of the present disclosure, a body of a valve assembly is provided. The body has a gas flow path including a first flow path and a second flow path. The first flow path is configured to be connected to a gas tank that stores gas, and the second flow path is configured to be selectively connected to any one of a plurality of external devices. The plurality of external devices include a source of gas to be filled into the gas tank, and a consumer device that consumes gas delivered from the gas tank. The second flow path includes a main flow path defined by a hole extending linearly, and a sub-flow path defined by a hole extending linearly and intersecting the main flow path. The sub-flow path has an intersecting opening end that opens on an inner circumferential surface of the main flow path. A compressive residual stress is imparted to the peripheral portion of the intersecting opening end in the body.

　本開示の他の態様によれば、弁アセンブリのボディの製造方法が提供される。前記ボディは、第１流路及び第２流路を含むガス流路を有する。前記第１流路は、ガスを貯蔵するガスタンクに接続されるように構成され、前記第２流路は、複数の外部機器のうちのいずれか１つに選択的に接続されるように構成される。前記複数の外部機器は、前記ガスタンクに充填するガスの供給源、及び前記ガスタンクから送出されるガスを消費する消費機器を含む。前記第２流路は、直線状に延びる孔によって区画される主流路、及び直線状に延びる孔によって区画されるとともに前記主流路と交差する副流路を含む。前記副流路は、前記主流路の内周面に開口する交差開口端を有する。前記ボディにおける前記交差開口端の周縁部は、前記主流路及び前記副流路のいずれか一方の中心線に対して凹んだ凹状面を有する。前記凹状面は、前記主流路及び前記副流路の中心線を含む断面において、前記周縁部のなす角度を前記副流路の前記主流路に対する交差角よりも大きくするように構成される。前記製造方法は、前記ボディに前記第２流路を形成する流路形成ステップと、前記周縁部に前記凹状面を形成する面取り加工ステップと、を含む。 According to another aspect of the present disclosure, a method for manufacturing a body of a valve assembly is provided. The body has a gas flow path including a first flow path and a second flow path. The first flow path is configured to be connected to a gas tank that stores gas, and the second flow path is configured to be selectively connected to any one of a plurality of external devices. The plurality of external devices include a source of gas to be filled into the gas tank, and a consumer device that consumes gas delivered from the gas tank. The second flow path includes a main flow path defined by a linearly extending hole, and a secondary flow path defined by a linearly extending hole and intersecting with the main flow path. The secondary flow path has an intersecting opening end that opens on an inner peripheral surface of the main flow path. A peripheral portion of the intersecting opening end in the body has a concave surface that is recessed with respect to a center line of either the main flow path or the secondary flow path. The concave surface is configured such that an angle formed by the peripheral portion is larger than an intersecting angle of the secondary flow path with respect to the main flow path in a cross section including the center lines of the main flow path and the secondary flow path. The manufacturing method includes a flow path forming step for forming the second flow path in the body, and a chamfering step for forming the concave surface on the peripheral portion.

　本開示のさらなる態様によれば、弁アセンブリのボディの製造方法が提供される。前記ボディは、第１流路及び第２流路を含むガス流路を有する。前記第１流路は、ガスを貯蔵するガスタンクに接続されるように構成され、前記第２流路は、複数の外部機器のうちのいずれか１つに選択的に接続されるように構成される。前記複数の外部機器は、前記ガスタンクに充填するガスの供給源、及び前記ガスタンクから送出されるガスを消費する消費機器を含む。前記第２流路は、直線状に延びる孔によって区画される主流路、及び直線状に延びる孔によって区画されるとともに前記主流路と交差する副流路を含む。前記副流路は、前記主流路の内周面に開口する交差開口端を有する。前記製造方法は、前記ボディに前記第２流路を形成する流路形成ステップと、前記ボディにおける前記交差開口端の周縁部に、圧縮残留応力を付与する圧縮加工ステップと、を含む。 According to a further aspect of the present disclosure, a method for manufacturing a body of a valve assembly is provided. The body has a gas flow path including a first flow path and a second flow path. The first flow path is configured to be connected to a gas tank that stores gas, and the second flow path is configured to be selectively connected to any one of a plurality of external devices. The plurality of external devices include a source of gas to be filled into the gas tank, and a consumer device that consumes gas delivered from the gas tank. The second flow path includes a main flow path defined by a linearly extending hole, and a sub-flow path defined by a linearly extending hole and intersecting the main flow path. The sub-flow path has an intersecting opening end that opens on an inner circumferential surface of the main flow path. The manufacturing method includes a flow path forming step of forming the second flow path in the body, and a compression processing step of imparting compressive residual stress to a peripheral portion of the intersecting opening end in the body.

一実施形態の弁アセンブリのボディ及びボディに取り付けられる弁サブアセンブリの概略構成を示す断面図である。1 is a cross-sectional view showing a schematic configuration of a body of a valve assembly of one embodiment and a valve subassembly attached to the body. 図１のボディの第２流路を形成している最中の模式的な拡大断面図である。FIG. 2 is a schematic enlarged cross-sectional view of the body of FIG. 1 during the formation of a second flow passage; 図１のボディの第２流路の内周面に作用する水素ガスの圧力を示す模式的な拡大断面図である。2 is a schematic enlarged cross-sectional view showing the pressure of hydrogen gas acting on an inner circumferential surface of a second flow passage of the body of FIG. 1 . FIG. 図１のボディの第２流路に圧縮加工を施している最中の模式的な拡大断面図である。2 is a schematic enlarged cross-sectional view of the body of FIG. 1 during compression processing of a second flow passage; FIG. 図１のボディの第２流路に圧縮加工を施した後の模式的な拡大断面図である。2 is a schematic enlarged cross-sectional view of the body of FIG. 1 after compression processing is performed on a second flow passage; FIG. 図１のボディの第２流路における第１部分を第２部分から見た斜視図である。2 is a perspective view of a first portion of a second flow passage of the body of FIG. 1 as viewed from a second portion. FIG. 図１のボディの第２流路における第１部分と第２部分との交差部分を示す模式的な拡大断面図である。2 is a schematic enlarged cross-sectional view showing an intersection between a first portion and a second portion in a second flow passage of the body of FIG. 1 ; FIG. 図１のボディの第２流路における第３部分を第２部分から見た斜視図である。2 is a perspective view of a third portion of a second flow passage of the body of FIG. 1 as viewed from the second portion. FIG. 図１のボディを製造する手順を示すフローチャートである。2 is a flowchart showing a procedure for manufacturing the body of FIG. 1 . 図７の第２流路における交差部分に面取り加工を施している最中の模式的な断面図である。FIG. 8 is a schematic cross-sectional view of the second flow path in FIG. 7 during chamfering of the intersection portion. 図７の第２流路における交差部分に面取り加工を施している最中の模式的な断面図である。FIG. 8 is a schematic cross-sectional view of the second flow path in FIG. 7 during chamfering of the intersection portion.

　以下、弁アセンブリのボディ及びその製造方法の一実施形態を図面に従って説明する。
　（全体構成）
　図１に示す弁アセンブリ１は、例えば燃料電池自動車のガスタンク２に装着される。ガスタンク２には、例えば７２．５ＭＰａ程度の高圧の水素ガスが貯蔵される。また、弁アセンブリ１は、複数の外部機器３のいずれか１つに選択的に接続される。複数の外部機器３は、ガスタンク２に充填する水素ガスの供給源４、及びガスタンク２から送出される水素ガスを消費する消費機器５を含む。供給源４は、例えば水素ステーションであり、配管６を介して弁アセンブリ１に接続される。消費機器５は、例えば自動車に搭載される燃料電池であり、配管７を介して弁アセンブリ１に接続される。弁アセンブリ１は、ガスタンク２に充填される水素ガス及びガスタンク２から送出される水素ガスの流通を制御する。 Hereinafter, one embodiment of a body of a valve assembly and a manufacturing method thereof will be described with reference to the drawings.
(Overall composition)
The valve assembly 1 shown in Fig. 1 is mounted on, for example, a gas tank 2 of a fuel cell vehicle. High-pressure hydrogen gas, for example, about 72.5 MPa, is stored in the gas tank 2. The valve assembly 1 is selectively connected to any one of a plurality of external devices 3. The plurality of external devices 3 includes a supply source 4 of hydrogen gas to be filled into the gas tank 2, and a consumer device 5 that consumes the hydrogen gas delivered from the gas tank 2. The supply source 4 is, for example, a hydrogen station, and is connected to the valve assembly 1 via a pipe 6. The consumer device 5 is, for example, a fuel cell mounted on an automobile, and is connected to the valve assembly 1 via a pipe 7. The valve assembly 1 controls the flow of hydrogen gas to be filled into the gas tank 2 and the hydrogen gas to be delivered from the gas tank 2.

　弁アセンブリ１は、ガス流路を有するボディ１１と、ボディ１１に取り付けられる複数の弁サブアセンブリとを備えている。ガス流路は、ガスタンク２に接続される第１流路１２、及び外部機器３に接続される第２流路１３を含む。複数の弁サブアセンブリは、例えば手動弁１４、複合弁１５、安全弁１６、逆止弁１７及び過流防止弁１８を含む。複数の弁サブアセンブリは、これらの弁サブアセンブリに加えて又は代えて、任意の弁サブアセンブリを含んでもよい。また、図示のように、弁アセンブリ１は、配管６又は配管７を接続するための継手１９をさらに備えてもよい。 The valve assembly 1 includes a body 11 having a gas flow path, and a plurality of valve subassemblies attached to the body 11. The gas flow path includes a first flow path 12 connected to a gas tank 2, and a second flow path 13 connected to an external device 3. The plurality of valve subassemblies include, for example, a manual valve 14, a combination valve 15, a safety valve 16, a check valve 17, and an excess flow prevention valve 18. The plurality of valve subassemblies may include any valve subassembly in addition to or in place of these valve subassemblies. As shown, the valve assembly 1 may further include a fitting 19 for connecting a pipe 6 or a pipe 7.

　（ボディ）
　ボディ１１は、例えば鍛造された金属材料製である。ボディ１１は、例えばその一部が張り出した直方体状をなしている。本実施形態のボディ１１は、切れ目のない連続した一体品（ｏｎｅ　ｐｉｅｃｅ）である。ボディ１１の外面は、第１側面１１ａと、第２側面１１ｂと、第３側面１１ｃと、第４側面１１ｄとを含む。第１側面１１ａと第３側面１１ｃとは、例えば互いに平行である。第２側面１１ｂと第４側面１１ｄとは、例えば互いに平行である。第１側面１１ａ及び第３側面１１ｃは、例えば第２側面１１ｂ及び第４側面１１ｄに対して直交する。 (body)
The body 11 is made of, for example, a forged metal material. The body 11 is, for example, a rectangular parallelepiped with a protruding portion. The body 11 of this embodiment is a continuous one-piece product without any seams. The outer surface of the body 11 includes a first side surface 11a, a second side surface 11b, a third side surface 11c, and a fourth side surface 11d. The first side surface 11a and the third side surface 11c are, for example, parallel to each other. The second side surface 11b and the fourth side surface 11d are, for example, parallel to each other. The first side surface 11a and the third side surface 11c are, for example, perpendicular to the second side surface 11b and the fourth side surface 11d.

　ボディ１１は、ボディ１１に取り付けられる部材に応じた複数の取付穴を有している。複数の取付穴は、例えば継手１９を取り付けるための継手用取付穴２１と、手動弁１４を取り付けるための手動弁用取付穴２２と、安全弁１６及び逆止弁１７を取り付けるための第１取付穴である統合取付穴２３と、複合弁１５を取り付けるための第２取付穴である複合弁用取付穴２４とを含む。統合取付穴２３は、安全弁１６が取り付けられる安全弁用取付穴２５と、逆止弁１７が取り付けられる逆止弁用取付穴２６とを有している。 The body 11 has a number of mounting holes corresponding to the components to be attached to the body 11. The multiple mounting holes include, for example, a fitting mounting hole 21 for mounting the fitting 19, a manual valve mounting hole 22 for mounting the manual valve 14, an integrated mounting hole 23 which is a first mounting hole for mounting the safety valve 16 and the check valve 17, and a combined valve mounting hole 24 which is a second mounting hole for mounting the combined valve 15. The integrated mounting hole 23 has a safety valve mounting hole 25 to which the safety valve 16 is attached, and a check valve mounting hole 26 to which the check valve 17 is attached.

　継手用取付穴２１は、例えば丸穴であり、第１側面１１ａに開口している。継手用取付穴２１の底面は、例えば第１側面１１ａと平行な平面である。手動弁用取付穴２２は、例えば丸穴であり、第２側面１１ｂに開口している。手動弁用取付穴２２の底面は、例えば第２側面１１ｂと平行な平面である。統合取付穴２３は、例えば段付きの丸穴であり、第３側面１１ｃに開口している。具体的には、安全弁用取付穴２５は、例えば丸穴であり、ボディ１１の外面である第３側面１１ｃに開口している。逆止弁用取付穴２６は、例えば安全弁用取付穴２５よりも小径の丸穴であり、安全弁用取付穴２５の底面に開口している。安全弁用取付穴２５の内周面には、外部に連通する放出孔２７が設けられている。逆止弁用取付穴２６の底面は、例えば第３側面１１ｃと平行な平面である。複合弁用取付穴２４は、例えば丸穴であり、第４側面１１ｄに開口している。複合弁用取付穴２４の底面は、例えば第４側面１１ｄと平行な平面である。 The fitting mounting hole 21 is, for example, a round hole and opens to the first side surface 11a. The bottom surface of the fitting mounting hole 21 is, for example, a plane parallel to the first side surface 11a. The manual valve mounting hole 22 is, for example, a round hole and opens to the second side surface 11b. The bottom surface of the manual valve mounting hole 22 is, for example, a plane parallel to the second side surface 11b. The integrated mounting hole 23 is, for example, a stepped round hole and opens to the third side surface 11c. Specifically, the safety valve mounting hole 25 is, for example, a round hole and opens to the third side surface 11c, which is the outer surface of the body 11. The check valve mounting hole 26 is, for example, a round hole with a smaller diameter than the safety valve mounting hole 25 and opens to the bottom surface of the safety valve mounting hole 25. A release hole 27 communicating with the outside is provided on the inner surface of the safety valve mounting hole 25. The bottom surface of the check valve mounting hole 26 is, for example, a plane parallel to the third side surface 11c. The combined valve mounting hole 24 is, for example, a circular hole and opens to the fourth side surface 11d. The bottom surface of the combined valve mounting hole 24 is, for example, a plane parallel to the fourth side surface 11d.

　第１流路１２は、統合取付穴２３をガスタンク２と連通させる充填部分３１と、複合弁用取付穴２４をガスタンク２と連通させる送出部分３２とを含む。充填部分３１及び送出部分３２は、例えば直線状に延びる１つ以上の丸孔の内周面によって区画されている。充填部分３１は、例えば統合取付穴２３の内周面に開口している。これにより、安全弁１６及び逆止弁１７は、充填部分３１を介してガスタンク２に接続される。送出部分３２は、例えば複合弁用取付穴２４の内周面に開口している。これにより、複合弁１５は、送出部分３２を介してガスタンク２に接続される。図示のように、充填部分３１と送出部分３２とは、互いに独立した流路であってもよい。本実施形態の充填部分３１の流路断面積は、その全域に亘って送出部分３２の流路断面積よりも大きい。他の実施形態では、充填部分３１の流路断面積は、送出部分３２の流路断面積と同じであっても、送出部分３２の流路断面積より小さくてもよい。 The first flow path 12 includes a filling portion 31 that connects the integrated mounting hole 23 to the gas tank 2, and a delivery portion 32 that connects the combined valve mounting hole 24 to the gas tank 2. The filling portion 31 and the delivery portion 32 are partitioned by the inner circumferential surface of one or more circular holes that extend linearly, for example. The filling portion 31 opens, for example, to the inner circumferential surface of the integrated mounting hole 23. As a result, the safety valve 16 and the check valve 17 are connected to the gas tank 2 via the filling portion 31. The delivery portion 32 opens, for example, to the inner circumferential surface of the combined valve mounting hole 24. As a result, the combined valve 15 is connected to the gas tank 2 via the delivery portion 32. As shown in the figure, the filling portion 31 and the delivery portion 32 may be independent flow paths. The flow path cross-sectional area of the filling portion 31 in this embodiment is larger than the flow path cross-sectional area of the delivery portion 32 over its entire area. In other embodiments, the cross-sectional flow area of the filling portion 31 may be the same as or smaller than the cross-sectional flow area of the delivery portion 32.

　第２流路１３は、第１部分３３と、第２部分３４と、第３部分３５と、第４部分３６とを含む。本実施形態では、第２流路１３の全体と、継手用取付穴２１と、手動弁用取付穴２２と、統合取付穴２３と、複合弁用取付穴２４とは、同一平面内に配置されている。他の実施形態では、例えば第２流路１３の少なくとも一部及び関連する取付穴が、同一平面内に配置されていなくてもよい。第１部分３３、第２部分３４、第３部分３５及び第４部分３６は、それぞれ、例えば直線状に延びる丸孔の内周面によって区画されている。第１部分３３、第２部分３４、第３部分３５及び第４部分３６は、ボディ１１に対してドリル等の工具を用いて孔開け加工を施すことにより形成されている。 The second flow passage 13 includes a first portion 33, a second portion 34, a third portion 35, and a fourth portion 36. In this embodiment, the entire second flow passage 13, the fitting mounting hole 21, the manual valve mounting hole 22, the integrated mounting hole 23, and the composite valve mounting hole 24 are arranged in the same plane. In other embodiments, for example, at least a portion of the second flow passage 13 and the associated mounting holes do not have to be arranged in the same plane. The first portion 33, the second portion 34, the third portion 35, and the fourth portion 36 are each defined by, for example, the inner circumferential surface of a straight-lined circular hole. The first portion 33, the second portion 34, the third portion 35, and the fourth portion 36 are formed by drilling holes in the body 11 using a tool such as a drill.

　第１部分３３は、継手用取付穴２１の底面に開口するとともに、第１側面１１ａと直交する方向に直線状に延びている。第１部分３３は、継手用取付穴２１の底面に開口する第１端と、第１端と反対側の第２端とを有している。第１部分３３の第１端は、継手１９を介して供給源４又は消費機器５に接続される。つまり、第１部分３３の第１端は、供給源４から供給される水素ガスの入口であるとともに消費機器５に送出される水素ガスの出口である共通ポート３７として用いられる。したがって、第２流路１３は、共通ポート３７を含む。第１部分３３は、例えば延伸方向全域に亘って略一様な円形断面を有している。 The first portion 33 opens into the bottom surface of the fitting mounting hole 21 and extends linearly in a direction perpendicular to the first side surface 11a. The first portion 33 has a first end that opens into the bottom surface of the fitting mounting hole 21 and a second end opposite the first end. The first end of the first portion 33 is connected to the supply source 4 or the consumer device 5 via the fitting 19. In other words, the first end of the first portion 33 is used as a common port 37 that is an inlet for hydrogen gas supplied from the supply source 4 and an outlet for hydrogen gas sent to the consumer device 5. Therefore, the second flow path 13 includes the common port 37. The first portion 33 has, for example, a substantially uniform circular cross section throughout the entire extension direction.

　第２部分３４は、手動弁用取付穴２２の底面に開口するとともに、手動弁用取付穴２２の底面から第２側面１１ｂと直交する方向に直線状に延びている。第２部分３４は、手動弁用取付穴２２の底面に開口する第１端と、第１端と反対側の第２端とを有している。第２部分３４の内周面には、第１部分３３の第２端が開口している。換言すると、第１部分３３は、その第２端が第２部分３４の内周面に開口するように第２部分３４に対して交差している。したがって、第２部分３４が主流路に相当し、第１部分３３が第２部分３４に交差する副流路に相当し、第１部分３３の第２端が交差開口端に相当する。図示の例では、上記のように第１部分３３及び第２部分３４がそれぞれ第１側面１１ａ及び第２側面１１ｂに対して直交する方向に延びていることから、第１部分３３は、第２部分３４に対して直交している。すなわち、第１部分３３の第２部分３４に対する交差角は、略９０°である。第２部分３４の内径は、第１部分３３との交差位置よりも奥側の位置を境としてステップ状に変化している。つまり、第２部分３４は、段差部を有している。第２部分３４における段差部よりも奥側に位置する小径部の内径は、段差部よりも手前側に位置する大径部の内径よりも小さい。第２部分３４の大径部及び小径部の各々は、例えば延伸方向全域に亘って略一様な円形断面を有している。第１部分３３の内径は、第２部分３４の大径部の内径よりも小さい。後述するように、第２部分３４における第１部分３３との交差位置よりも手前側の領域は、手動弁１４によって塞がれている。 The second portion 34 opens into the bottom surface of the manual valve mounting hole 22 and extends linearly from the bottom surface of the manual valve mounting hole 22 in a direction perpendicular to the second side surface 11b. The second portion 34 has a first end that opens into the bottom surface of the manual valve mounting hole 22 and a second end opposite the first end. The second end of the first portion 33 opens into the inner peripheral surface of the second portion 34. In other words, the first portion 33 intersects with the second portion 34 so that its second end opens into the inner peripheral surface of the second portion 34. Therefore, the second portion 34 corresponds to the main flow path, the first portion 33 corresponds to the secondary flow path that intersects with the second portion 34, and the second end of the first portion 33 corresponds to the intersecting opening end. In the illustrated example, since the first portion 33 and the second portion 34 extend in a direction perpendicular to the first side surface 11a and the second side surface 11b, respectively, as described above, the first portion 33 is perpendicular to the second portion 34. That is, the intersection angle of the first portion 33 with respect to the second portion 34 is approximately 90°. The inner diameter of the second portion 34 changes in a step-like manner with a boundary at a position on the rear side of the intersection position with the first portion 33 as a boundary. That is, the second portion 34 has a step portion. The inner diameter of the small diameter portion located on the rear side of the step portion in the second portion 34 is smaller than the inner diameter of the large diameter portion located on the front side of the step portion. Each of the large diameter portion and the small diameter portion of the second portion 34 has, for example, a substantially uniform circular cross section over the entire extension direction. The inner diameter of the first portion 33 is smaller than the inner diameter of the large diameter portion of the second portion 34. As described below, the area of the second portion 34 that is in front of the intersection with the first portion 33 is blocked by the manual valve 14.

　第３部分３５は、例えば統合取付穴２３（逆止弁用取付穴２６）の底面に開口するとともに、統合取付穴２３の底面から第３側面１１ｃと直交する方向に直線状に延びている。第３部分３５は、統合取付穴２３の底面に開口する第１端と、第１端と反対側の第２端とを有している。第３部分３５は、その第２端が第２部分３４の内周面に開口するように第２部分３４に対して交差している。換言すると、第２部分３４の内周面には、第３部分３５の第２端が開口している。したがって、第２部分３４が主流路に相当し、第３部分３５が第２部分３４に交差する副流路に相当し、第３部分３５の第２端が交差開口端に相当する。図示の例では、上記のように第２部分３４及び第３部分３５がそれぞれ第２側面１１ｂ及び第３側面１１ｃに対して直交する方向に延びていることから、第３部分３５は、第２部分３４に対して直交している。すなわち、第３部分３５の第２部分３４に対する交差角は、略９０°である。図示のように、第３部分３５は、例えば第２部分３４における小径部に対して直交している。第３部分３５は、第２部分３４を統合取付穴２３と連通させている。第３部分３５は、例えば延伸方向全域に亘って略一様な円形断面を有している。第３部分３５の内径は、第２部分３４の小径部の内径と略等しい。 The third portion 35 opens, for example, into the bottom surface of the integrated mounting hole 23 (check valve mounting hole 26) and extends linearly from the bottom surface of the integrated mounting hole 23 in a direction perpendicular to the third side surface 11c. The third portion 35 has a first end that opens into the bottom surface of the integrated mounting hole 23 and a second end opposite the first end. The third portion 35 intersects with the second portion 34 so that its second end opens into the inner peripheral surface of the second portion 34. In other words, the second end of the third portion 35 opens into the inner peripheral surface of the second portion 34. Therefore, the second portion 34 corresponds to the main flow path, the third portion 35 corresponds to a secondary flow path that intersects with the second portion 34, and the second end of the third portion 35 corresponds to the intersecting opening end. In the illustrated example, since the second portion 34 and the third portion 35 extend in a direction perpendicular to the second side surface 11b and the third side surface 11c, respectively, as described above, the third portion 35 is perpendicular to the second portion 34. That is, the intersection angle of the third portion 35 with the second portion 34 is approximately 90°. As illustrated, the third portion 35 is perpendicular to, for example, the small diameter portion of the second portion 34. The third portion 35 connects the second portion 34 to the integrated mounting hole 23. The third portion 35 has, for example, a substantially uniform circular cross section throughout the entire extension direction. The inner diameter of the third portion 35 is approximately equal to the inner diameter of the small diameter portion of the second portion 34.

　第４部分３６は、例えば複合弁用取付穴２４の底面に開口するとともに、複合弁用取付穴２４の底面から第４側面１１ｄと直交する方向に直線状に延びている。したがって、第４部分３６は、第２部分３４と平行な方向に直線状に延びている。第４部分３６は、複合弁用取付穴２４の底面に開口する第１端と、第１端と反対側の第２端とを有している。第４部分３６の第２端は、第２部分３４の第２端と繋がっている。第４部分３６は、第２部分３４を複合弁用取付穴２４と連通させている。第４部分３６は、例えば延伸方向全域に亘って略一様な円形断面を有している。本実施形態では、第４部分３６は、例えば第２部分３４と同軸上に設けられているが、他の実施形態では、第４部分３６の軸線が第２部分３４の軸線と一致しなくてもよい。 The fourth portion 36 opens, for example, on the bottom surface of the composite valve mounting hole 24 and extends linearly from the bottom surface of the composite valve mounting hole 24 in a direction perpendicular to the fourth side surface 11d. Therefore, the fourth portion 36 extends linearly in a direction parallel to the second portion 34. The fourth portion 36 has a first end that opens on the bottom surface of the composite valve mounting hole 24 and a second end opposite the first end. The second end of the fourth portion 36 is connected to the second end of the second portion 34. The fourth portion 36 communicates with the composite valve mounting hole 24. The fourth portion 36 has, for example, a substantially uniform circular cross section throughout the entire extension direction. In this embodiment, the fourth portion 36 is provided coaxially with the second portion 34, for example, but in other embodiments, the axis of the fourth portion 36 does not have to coincide with the axis of the second portion 34.

　したがって、第２流路１３は、継手用取付穴２１（外部機器）を複合弁用取付穴２４（複合弁１５）及び統合取付穴２３（安全弁１６及び逆止弁１７）に接続している。第２流路１３における共通ポート３７と第４部分３６との間の経路は、第１部分３３と第２部分３４との間の１箇所でのみ直角に屈曲している。つまり、第２流路１３における共通ポート３７と第４部分３６との間の経路は、Ｌ字状をなしている。また、共通ポート３７と第３部分３５との間の経路は、第１部分３３と第２部分３４との間で直角に屈曲するとともに、第２部分３４と第３部分３５との間で第３部分３５が第１部分３３から離れるように直角に屈曲している。つまり、共通ポート３７と第３部分３５との間の経路は、クランク状をなしている。 Therefore, the second flow path 13 connects the fitting mounting hole 21 (external device) to the combined valve mounting hole 24 (combined valve 15) and the integrated mounting hole 23 (safety valve 16 and check valve 17). The path between the common port 37 and the fourth part 36 in the second flow path 13 is bent at a right angle only at one point between the first part 33 and the second part 34. In other words, the path between the common port 37 and the fourth part 36 in the second flow path 13 is L-shaped. In addition, the path between the common port 37 and the third part 35 is bent at a right angle between the first part 33 and the second part 34, and is also bent at a right angle between the second part 34 and the third part 35 so that the third part 35 moves away from the first part 33. In other words, the path between the common port 37 and the third part 35 is crank-shaped.

　継手１９は、例えば金属材料製である。継手１９は、例えば円柱状をなしている。継手１９は、継手流路３８を有している。継手流路３８は、例えば直線状に延びる丸孔の内周面によって区画されている。継手流路３８は、例えば継手１９の軸方向に沿って直線状に延びるとともに、継手１９の両端面に開口している。継手１９は、例えばネジ締結又は圧入等の任意の固定方法により継手用取付穴２１に固定されている。これにより、継手流路３８は、第１部分３３と連通する。継手１９には、配管６，７のいずれか１つが連結される。これにより、第２流路１３には、継手流路３８を介して供給源４又は消費機器５が接続される。 The joint 19 is made of, for example, a metal material. The joint 19 is, for example, cylindrical. The joint 19 has a joint flow path 38. The joint flow path 38 is defined, for example, by the inner circumferential surface of a linearly extending circular hole. The joint flow path 38 extends linearly, for example, along the axial direction of the joint 19, and opens at both end faces of the joint 19. The joint 19 is fixed to the joint mounting hole 21 by any fixing method, for example, screw fastening or press fitting. As a result, the joint flow path 38 communicates with the first part 33. One of the pipes 6 and 7 is connected to the joint 19. As a result, the supply source 4 or the consumer device 5 is connected to the second flow path 13 via the joint flow path 38.

　（複数の弁サブアセンブリ）
　手動弁１４は、手動弁ハウジング４１と、手動弁体４２とを備えている。手動弁ハウジング４１は、例えば円筒状をなしている。手動弁ハウジング４１は、例えばネジ締結又は圧入等の任意の固定方法により手動弁用取付穴２２に固定されている。手動弁体４２は、例えば円柱状をなしている。手動弁体４２は、例えばネジ締結により、第２流路１３の第２部分３４に沿って移動可能かつ手動弁ハウジング４１内の位置を保持可能に、手動弁ハウジング４１内に収容されている。 (Multiple Valve Subassemblies)
The manual valve 14 includes a manual valve housing 41 and a manual valve element 42. The manual valve housing 41 is, for example, cylindrical. The manual valve housing 41 is fixed to the manual valve mounting hole 22 by any fixing method, for example, screw fastening or press fitting. The manual valve element 42 is, for example, columnar. The manual valve element 42 is accommodated in the manual valve housing 41, for example, by screw fastening, so as to be movable along the second portion 34 of the second flow path 13 and to be able to hold its position within the manual valve housing 41.

　このように構成された手動弁１４では、手動弁体４２の先端部が第２部分３４の段差部に当接することで、第１部分３３と第２部分３４との間の水素ガスの流通が規制される。一方、手動弁体４２の先端部が第２部分３４の段差部から離間することで、第１部分３３と第２部分３４との間の水素ガスの流通が許容される。手動弁体４２は、第２部分３４における第１部分３３との交差位置よりも手前側の領域を塞いでいる。 In the manual valve 14 configured in this manner, the tip of the manual valve body 42 abuts against the step of the second part 34, restricting the flow of hydrogen gas between the first part 33 and the second part 34. On the other hand, the tip of the manual valve body 42 moves away from the step of the second part 34, allowing the flow of hydrogen gas between the first part 33 and the second part 34. The manual valve body 42 blocks the area of the second part 34 in front of the intersection with the first part 33.

　複合弁１５は、複合弁用取付穴２４に取り付けられている。複合弁１５は、電磁弁として機能する電磁弁部と、逆止弁として機能する逆止弁部とを有している。電磁弁部が弁サブアセンブリである電磁弁に相当し、逆止弁部が弁サブアセンブリである逆止弁に相当する。つまり、電磁弁及び逆止弁は、単一の複合弁用取付穴２４に取り付けられている。複合弁１５は、第１流路１２の送出部分３２と第２流路１３の第４部分３６との間の水素ガスの流通を制御する。 The combined valve 15 is attached to the combined valve mounting hole 24. The combined valve 15 has a solenoid valve section that functions as a solenoid valve, and a check valve section that functions as a check valve. The solenoid valve section corresponds to the solenoid valve, which is a valve subassembly, and the check valve section corresponds to the check valve, which is a valve subassembly. In other words, the solenoid valve and the check valve are attached to the single combined valve mounting hole 24. The combined valve 15 controls the flow of hydrogen gas between the delivery portion 32 of the first flow path 12 and the fourth portion 36 of the second flow path 13.

　具体的には、電磁弁部は、送出部分３２と第４部分３６との間の水素ガスの流通を制御する。逆止弁部は、電磁弁部と第４部分３６との間に配置されている。そして、逆止弁部は、送出部分３２から第４部分３６への水素ガスの流通を許容するとともに第４部分３６から送出部分３２への水素ガスの流通を規制する。これにより、電磁弁部が開状態になると、ガスタンク２内の水素ガスが第４部分３６を介して送出される。一方、水素ガスの充填時等には、高圧の水素ガスが電磁弁部に作用することが抑制される。 Specifically, the solenoid valve unit controls the flow of hydrogen gas between the delivery portion 32 and the fourth portion 36. The check valve unit is disposed between the solenoid valve unit and the fourth portion 36. The check valve unit allows the flow of hydrogen gas from the delivery portion 32 to the fourth portion 36, while restricting the flow of hydrogen gas from the fourth portion 36 to the delivery portion 32. As a result, when the solenoid valve unit is in an open state, hydrogen gas in the gas tank 2 is delivered via the fourth portion 36. On the other hand, when filling hydrogen gas, etc., high-pressure hydrogen gas is prevented from acting on the solenoid valve unit.

　安全弁１６は、逆止弁１７の開閉状態に関わらず、第１流路１２と連通する流入口４３を有している。安全弁１６は、安全弁１６の温度が閾値温度以下の場合には、流入口４３に流入する水素ガスを外部に放出しない閉状態となる。安全弁１６は、安全弁１６の温度が閾値温度を超えると、不可逆的に閉状態から開状態となる。開状態では、安全弁１６は、流入口４３に流入する水素ガスを放出孔２７を介して外部に放出する。閾値温度は、ガスタンク２内の水素ガスの圧力が過大となってガスタンク２が損傷しないように予め設定されている。 The safety valve 16 has an inlet 43 that communicates with the first flow path 12 regardless of whether the check valve 17 is open or closed. When the temperature of the safety valve 16 is equal to or lower than the threshold temperature, the safety valve 16 is in a closed state in which the hydrogen gas flowing into the inlet 43 is not released to the outside. When the temperature of the safety valve 16 exceeds the threshold temperature, the safety valve 16 irreversibly changes from a closed state to an open state. In the open state, the safety valve 16 releases the hydrogen gas flowing into the inlet 43 to the outside via the release hole 27. The threshold temperature is set in advance so that the pressure of the hydrogen gas in the gas tank 2 does not become excessive and damage the gas tank 2.

　逆止弁１７は、ガスタンク２内に充填されたガスの逆流を防止するように構成されている。具体的には、逆止弁１７は、第１流路１２の充填部分３１から第２流路１３の第３部分３５への水素ガスの流通を規制するとともに、第３部分３５から充填部分３１への水素ガスの流通を許容する。 The check valve 17 is configured to prevent the backflow of the gas filled in the gas tank 2. Specifically, the check valve 17 regulates the flow of hydrogen gas from the filling portion 31 of the first flow path 12 to the third portion 35 of the second flow path 13, while allowing the flow of hydrogen gas from the third portion 35 to the filling portion 31.

　過流防止弁１８は、継手流路３８内に設けられている。過流防止弁１８は、継手流路３８を所定方向に流れる水素ガスの流量が予め定められた所定量を超える場合に水素ガスの流通を制限するように構成されている。所定方向は、例えば水素ガスがガスタンク２から消費機器５に送出される方向である。過流防止弁１８は、所定方向と反対方向、すなわち水素ガスが供給源４からガスタンク２に充填される方向の水素ガスの流量は制限しない。 The overflow prevention valve 18 is provided in the joint flow path 38. The overflow prevention valve 18 is configured to restrict the flow of hydrogen gas when the flow rate of hydrogen gas flowing in a specified direction through the joint flow path 38 exceeds a predetermined amount. The specified direction is, for example, the direction in which hydrogen gas is delivered from the gas tank 2 to the consumer device 5. The overflow prevention valve 18 does not restrict the flow rate of hydrogen gas in the direction opposite to the specified direction, i.e., the direction in which hydrogen gas is filled from the supply source 4 into the gas tank 2.

　（弁アセンブリの動作）
　ガスタンク２に水素ガスを充填する際には、継手１９に配管６を介して供給源４が接続される。供給源４から水素ガスが供給されると、水素ガスは継手流路３８、第２流路１３の第１部分３３、第２部分３４及び第３部分３５を介して逆止弁１７に流入する。上記のように逆止弁１７は、第３部分３５から充填部分３１への水素ガスの流通を許容するように構成されているため、開状態となる。その結果、第３部分３５が第１流路１２の充填部分３１と連通する。これにより、充填部分３１を介して水素ガスがガスタンク２に充填される。このとき、水素ガスは、第２流路１３の第２部分３４から第４部分３６を介して複合弁１５の逆止弁部にも流入する。しかし、逆止弁部は、第４部分３６から送出部分３２への水素ガスの流通を規制するように構成されているため、閉状態となる。これにより、第２流路１３から送出部分３２には水素ガスは流入しない。 (Valve Assembly Operation)
When hydrogen gas is filled into the gas tank 2, the supply source 4 is connected to the joint 19 via the pipe 6. When hydrogen gas is supplied from the supply source 4, the hydrogen gas flows into the check valve 17 via the joint flow path 38, the first portion 33, the second portion 34, and the third portion 35 of the second flow path 13. As described above, the check valve 17 is configured to allow hydrogen gas to flow from the third portion 35 to the filling portion 31, and therefore is in an open state. As a result, the third portion 35 communicates with the filling portion 31 of the first flow path 12. As a result, hydrogen gas is filled into the gas tank 2 via the filling portion 31. At this time, hydrogen gas also flows into the check valve portion of the combined valve 15 from the second portion 34 of the second flow path 13 via the fourth portion 36. However, the check valve portion is configured to restrict the flow of hydrogen gas from the fourth portion 36 to the delivery portion 32, and therefore is in a closed state. As a result, hydrogen gas does not flow from the second flow path 13 to the delivery portion 32.

　消費機器５に水素ガスを送出する際には、継手１９に配管７を介して消費機器５が接続される。ガスタンク２内の水素ガスは、第１流路１２の送出部分３２を介して複合弁１５に流入する。複合弁１５の電磁弁部が開状態に制御されると、水素ガスが逆止弁部に流入する。逆止弁部は、送出部分３２から第４部分３６への水素ガスの流通を許容するように構成されているため、開状態となる。これにより、水素ガスは、第２流路１３の第４部分３６、第２部分３４、第１部分３３及び継手流路３８に流入し、配管７を介して消費機器５に送出される。このとき、水素ガスは、第２流路１３の第２部分３４から第３部分３５を介して逆止弁１７にも流入する。しかし、逆止弁１７は、ガスタンク２に貯蔵された水素ガスの圧力により閉状態となる。これにより、第３部分３５から充填部分３１には水素ガスは流入しない。 When hydrogen gas is delivered to the consumer device 5, the consumer device 5 is connected to the joint 19 via the piping 7. Hydrogen gas in the gas tank 2 flows into the combined valve 15 via the delivery portion 32 of the first flow path 12. When the solenoid valve portion of the combined valve 15 is controlled to an open state, hydrogen gas flows into the check valve portion. The check valve portion is configured to allow hydrogen gas to flow from the delivery portion 32 to the fourth portion 36, and is therefore in an open state. As a result, hydrogen gas flows into the fourth portion 36, the second portion 34, the first portion 33, and the joint flow path 38 of the second flow path 13, and is delivered to the consumer device 5 via the piping 7. At this time, hydrogen gas also flows into the check valve 17 from the second portion 34 of the second flow path 13 via the third portion 35. However, the check valve 17 is closed due to the pressure of the hydrogen gas stored in the gas tank 2. As a result, hydrogen gas does not flow from the third portion 35 to the filling portion 31.

　このように第２流路１３の一部は、水素ガスの充填経路及び水素ガスの供給経路として用いられている。換言すると、水素ガスの充填経路の一部及び水素ガスの供給経路の一部が共通化されている。これにより、充填経路と供給経路とが互いに独立している場合に比べ、ガス流路の形状が簡素化されている。 In this way, a portion of the second flow path 13 is used as a hydrogen gas filling path and a hydrogen gas supply path. In other words, a portion of the hydrogen gas filling path and a portion of the hydrogen gas supply path are shared. This simplifies the shape of the gas flow path compared to when the filling path and the supply path are independent of each other.

　（ボディの疲労破壊及びその対策）
　ここで、本発明者らは、鋭意研究の結果、長期に亘る使用によってボディ１１に発生する可能性のある疲労破壊について、以下の要因を突き止めた。 (Body fatigue failure and its countermeasures)
As a result of extensive research, the inventors have discovered that the following factors are responsible for fatigue failure that may occur in the body 11 after long-term use.

　第１に、上記のように第２流路１３を孔開け加工により形成する場合、第２流路１３の内周面を含む表面層には、引張残留応力が付与される。詳しくは、図２に示すように、第２流路１３は、回転する工具の切れ刃５１がボディ１１の一部を引きちぎるようにして除去することで形成される。そのため、第２流路１３の形成時において、第２流路１３の表面層には引張応力が作用する。その結果、第２流路１３の表面層に引張残留応力が付与される。 First, when the second flow passage 13 is formed by drilling as described above, a tensile residual stress is imparted to the surface layer including the inner circumferential surface of the second flow passage 13. In detail, as shown in FIG. 2, the second flow passage 13 is formed by removing a part of the body 11 by tearing it off with the cutting edge 51 of a rotating tool. Therefore, when the second flow passage 13 is formed, a tensile stress acts on the surface layer of the second flow passage 13. As a result, a tensile residual stress is imparted to the surface layer of the second flow passage 13.

　第２に、第２流路１３の表面層には、内部を流通する水素ガスの圧力によって引張応力が作用する。詳しくは、第２流路１３の内周面に水素ガスの圧力が作用することで、図３において二点鎖線で示すように、当該内周面が拡張する。これにより、第２流路１３の表面層には、引張応力が作用する。そして、こうした引張応力が流路形成時に付与された引張残留応力に重畳されることで、第２流路１３の表面層には大きな引張応力が作用する。 Secondly, tensile stress acts on the surface layer of the second flow path 13 due to the pressure of hydrogen gas flowing inside. More specifically, when hydrogen gas pressure acts on the inner circumferential surface of the second flow path 13, the inner circumferential surface expands as shown by the two-dot chain line in FIG. 3. As a result, tensile stress acts on the surface layer of the second flow path 13. Furthermore, this tensile stress is superimposed on the tensile residual stress imparted when the flow path was formed, and a large tensile stress acts on the surface layer of the second flow path 13.

　第３に、第２流路１３の表面層には、水素ガスの充填及び送出に伴う圧力変化によって引張応力が繰り返し作用する。詳しくは、水素ガスの充填時において、第２流路１３内の水素ガスの圧力は、供給源４から第２流路１３内に水素ガスが流入することで、低い状態から高い状態に変化する。水素ガスの充填は、ガスタンク２に貯蔵される水素ガスが減少するたびに行われる。そのため、第２流路１３の表面層には、水素ガスの充填に伴う圧力変化によって引張応力が繰り返し作用する。また、水素ガスの送出時において、第２流路１３内の水素ガスの圧力は、複合弁１５が開状態となって第２流路１３内に水素ガスが流入することで、低い状態から高い状態に変化する。水素ガスの送出は、水素ガスが消費機器５で消費されるたびに行われる。そのため、第２流路１３の表面層には、水素ガスの送出に伴う圧力変化によって引張応力が繰り返し作用する。特に、本実施形態の第２流路１３では、充填経路の一部及び供給経路の一部が共通化されているため、この共通化されている部分に引張応力の作用する回数が多くなる。 Thirdly, tensile stress is repeatedly applied to the surface layer of the second flow path 13 due to pressure changes accompanying the filling and discharge of hydrogen gas. More specifically, when hydrogen gas is being filled, the pressure of the hydrogen gas in the second flow path 13 changes from a low state to a high state as hydrogen gas flows into the second flow path 13 from the supply source 4. Hydrogen gas is filled every time the amount of hydrogen gas stored in the gas tank 2 decreases. Therefore, tensile stress is repeatedly applied to the surface layer of the second flow path 13 due to pressure changes accompanying the filling of hydrogen gas. Furthermore, when hydrogen gas is being discharged, the pressure of the hydrogen gas in the second flow path 13 changes from a low state to a high state as the combined valve 15 opens and hydrogen gas flows into the second flow path 13. Hydrogen gas is discharged every time hydrogen gas is consumed by the consumer device 5. Therefore, tensile stress is repeatedly applied to the surface layer of the second flow path 13 due to pressure changes accompanying the discharge of hydrogen gas. In particular, in the second flow path 13 of this embodiment, part of the filling path and part of the supply path are shared, so tensile stress acts on this shared part more frequently.

　第４に、ボディ１１における第２流路１３の交差部分には応力集中が発生する。詳しくは、図１に示すように、第１部分３３の交差開口端である第２端の周縁部６１、及び第３部分３５の交差開口端である第２端の周縁部７１には、応力集中が発生する。 Fourthly, stress concentration occurs at the intersection of the second flow passages 13 in the body 11. More specifically, as shown in FIG. 1, stress concentration occurs at the peripheral portion 61 of the second end, which is the intersection opening end of the first portion 33, and at the peripheral portion 71 of the second end, which is the intersection opening end of the third portion 35.

　したがって、孔開け加工により第２流路１３を形成しただけのボディ１１では、流路形成時に付与された引張残留応力及び応力集中に起因して、第１部分３３及び第３部分３５の周縁部６１，７１に大きな引張応力が作用する。そして、こうした大きな引張応力が繰り返し作用することで、周縁部６１，７１に疲労破壊が発生しやすく、弁アセンブリ１の寿命低下を招く。 Therefore, in a body 11 in which the second flow passage 13 is merely formed by drilling, large tensile stress acts on the peripheral portions 61, 71 of the first portion 33 and the third portion 35 due to the tensile residual stress and stress concentration imparted when the flow passage is formed. And, when such large tensile stress acts repeatedly, fatigue failure is likely to occur in the peripheral portions 61, 71, resulting in a shortened lifespan of the valve assembly 1.

　上記考察を踏まえ、本実施形態の弁アセンブリ１では、ボディ１１における第１部分３３及び第３部分３５の交差開口端の周縁部６１，７１に、圧縮加工によって圧縮残留応力を付与するとともに、面取り加工によって凹状面を設けている。 In light of the above considerations, in the valve assembly 1 of this embodiment, compressive residual stress is imparted to the peripheral portions 61, 71 of the intersecting opening ends of the first portion 33 and the third portion 35 of the body 11 by compression processing, and a concave surface is provided by chamfering.

　詳しくは、図４Ａに示すように、圧縮加工は、第２流路１３の内周面に工具５２を押し付けながら滑らせるバニシング工程を含む。バニシング工程により、第２流路１３の内周面を拡径させつつ、表面層のみを塑性変形させる。このとき、ボディ１１における表面層の外周領域は、弾性変形する弾性域となる。なお、図４Ａでは、説明の便宜上、塑性変形する表面層と弾性変形する弾性域との境界を模式的に二点鎖線で示す。そのため、図４Ｂに示すように、工具５２を第２流路１３から取り出すと、弾性域が復元しようとすることで、表面層には圧縮応力が作用する。これにより、周縁部６１，７１に圧縮残留応力が付与される。一例として、圧縮加工は、リーマ加工又はローラバニシング加工であってもよい。本実施形態では、第２流路１３の第１部分３３、第２部分３４及び第３部分３５全体に圧縮加工を施している。他の実施形態では、例えば周縁部６１，７１のみに圧縮加工を施してもよい。 In detail, as shown in FIG. 4A, the compression process includes a burnishing process in which the tool 52 is pressed and slid against the inner surface of the second flow path 13. The burnishing process expands the diameter of the inner surface of the second flow path 13 while plastically deforming only the surface layer. At this time, the outer peripheral region of the surface layer in the body 11 becomes an elastic region that elastically deforms. Note that in FIG. 4A, for the sake of convenience, the boundary between the surface layer that plastically deforms and the elastic region that elastically deforms is shown by a two-dot chain line. Therefore, as shown in FIG. 4B, when the tool 52 is removed from the second flow path 13, the elastic region tries to restore, and a compressive stress acts on the surface layer. As a result, compressive residual stress is imparted to the peripheral portions 61 and 71. As an example, the compression process may be a reaming process or a roller burnishing process. In this embodiment, the compression process is performed on the entire first portion 33, second portion 34, and third portion 35 of the second flow path 13. In other embodiments, for example, compression may be applied only to the peripheral portions 61 and 71.

　図５～図７に示すように、周縁部６１，７１は、第１凹状面６２，７２及び第２凹状面６３，７３を有している。以下、第１部分３３の中心線Ｌ１及び第２部分３４の中心線Ｌ２を含む平面を第１平面といい、第２部分３４の中心線Ｌ２及び第３部分３５の中心線を含む平面を第２平面という。上記のように第２流路１３の全体が同一平面内に配置されていることから、本実施形態では、第１平面は第２平面と一致する。図６は、ボディ１１を第１平面で切断した断面である。ボディ１１を第２平面で切断した断面、特に周縁部７１の近傍の断面は、図６と同様であるため、省略する。 As shown in Figures 5 to 7, the peripheral portions 61, 71 have first concave surfaces 62, 72 and second concave surfaces 63, 73. Hereinafter, the plane including the center line L1 of the first portion 33 and the center line L2 of the second portion 34 will be referred to as the first plane, and the plane including the center line L2 of the second portion 34 and the center line of the third portion 35 will be referred to as the second plane. As described above, the entire second flow path 13 is disposed within the same plane, and therefore in this embodiment, the first plane coincides with the second plane. Figure 6 is a cross section of the body 11 cut by the first plane. The cross section of the body 11 cut by the second plane, particularly the cross section near the peripheral portion 71, is omitted as it is similar to Figure 6.

　詳しくは、図５及び図６に示すように、周縁部６１の第１凹状面６２は、第１部分３３の中心線Ｌ１に沿った方向から見て、第１部分３３の周方向に沿って延びる円環状をなしている。第１凹状面６２は、周縁部６１の全周に亘って設けられている。第１凹状面６２は、第１部分３３及び第２部分３４の中心線Ｌ１，Ｌ２を含む断面視で、主流路である第２部分３４の中心線Ｌ２に対して凹んでいる。第１凹状面６２は、例えば円弧状に凹んでいる。 More specifically, as shown in Figures 5 and 6, the first concave surface 62 of the peripheral portion 61 forms an annular shape extending along the circumferential direction of the first portion 33 when viewed from a direction along the center line L1 of the first portion 33. The first concave surface 62 is provided around the entire circumference of the peripheral portion 61. In a cross-sectional view including the center lines L1 and L2 of the first portion 33 and the second portion 34, the first concave surface 62 is concave with respect to the center line L2 of the second portion 34, which is the main flow path. The first concave surface 62 is concave, for example, in an arc shape.

　周縁部６１の第２凹状面６３は、第１凹状面６２に連続して設けられている。第２凹状面６３は、周縁部６１の周方向範囲のうち、第１平面と交差する部分を含む一部のみに設けられている。第２凹状面６３が設けられる周方向範囲は、１８０°よりも小さい任意の範囲であり、例えば６０°～１５０°程度の範囲に設定される。すなわち、第２凹状面６３は、第１部分３３の中心線Ｌ１に沿った方向から見て、第１部分３３の周方向に沿って延びる円弧状をなしている。第２凹状面６３は、第１部分３３及び第２部分３４の中心線Ｌ１，Ｌ２を含む断面視で、副流路である第１部分３３の中心線Ｌ１に対して凹んでいる。第２凹状面６３は、例えば円弧状に凹んでいる。 The second concave surface 63 of the peripheral portion 61 is provided continuously with the first concave surface 62. The second concave surface 63 is provided only in a portion of the circumferential range of the peripheral portion 61, including the portion intersecting with the first plane. The circumferential range in which the second concave surface 63 is provided is any range smaller than 180°, and is set to a range of, for example, about 60° to 150°. That is, the second concave surface 63 is in the shape of an arc extending along the circumferential direction of the first portion 33 when viewed from a direction along the center line L1 of the first portion 33. The second concave surface 63 is concave with respect to the center line L1 of the first portion 33, which is the secondary flow path, in a cross-sectional view including the center lines L1 and L2 of the first portion 33 and the second portion 34. The second concave surface 63 is concave, for example, in the shape of an arc.

　これにより、第１部分３３及び第２部分３４の中心線Ｌ１，Ｌ２を含む断面において、面取り加工を施す前の周縁部６１の角度が略９０°であるのに対し、面取り加工を施した後の周縁部６１の角度は９０°よりも大きい鈍角となっている。つまり、第１凹状面６２及び第２凹状面６３は、第１部分３３及び第２部分３４の中心線Ｌ１，Ｌ２を含む断面において、周縁部６１のなす角度を第１部分３３の第２部分３４に対する交差角よりも大きくするような形状を有している。なお、図６において、面取り加工を施す前の周縁部６１を二点鎖線で示す。 As a result, in a cross section including the center lines L1, L2 of the first portion 33 and the second portion 34, the angle of the peripheral portion 61 before chamfering is approximately 90°, whereas the angle of the peripheral portion 61 after chamfering is an obtuse angle greater than 90°. In other words, the first concave surface 62 and the second concave surface 63 have a shape such that the angle of the peripheral portion 61 is greater than the intersection angle of the first portion 33 with the second portion 34 in a cross section including the center lines L1, L2 of the first portion 33 and the second portion 34. In FIG. 6, the peripheral portion 61 before chamfering is indicated by a two-dot chain line.

　図７に示すように、第１凹状面７２は、周縁部７１の周方向範囲のうち、第２平面と交差する部分を含む一部のみに設けられている。すなわち、周縁部７１の第１凹状面７２は、第３部分３５の中心線に沿った方向から見て、第３部分３５の周方向に沿って延びる円弧状をなしている。第１凹状面７２が設けられる周方向範囲は、例えば第２凹状面６３と同様に設定されてもよい。第１凹状面７２は、第２部分３４の中心線Ｌ２及び第３部分３５の中心線を含む断面視で、主流路である第２部分３４の中心線Ｌ２に対して凹んでいる。第１凹状面７２は、例えば円弧状に凹んでいる。 As shown in FIG. 7, the first concave surface 72 is provided only in a portion of the circumferential range of the peripheral portion 71, including the portion that intersects with the second plane. That is, the first concave surface 72 of the peripheral portion 71 is in the shape of an arc extending along the circumferential direction of the third portion 35 when viewed from a direction along the center line of the third portion 35. The circumferential range in which the first concave surface 72 is provided may be set, for example, similar to that of the second concave surface 63. The first concave surface 72 is concave with respect to the center line L2 of the second portion 34, which is the main flow path, in a cross-sectional view including the center line L2 of the second portion 34 and the center line of the third portion 35. The first concave surface 72 is concave, for example, in the shape of an arc.

　周縁部７１の第２凹状面７３は、第１凹状面７２に連続して設けられている。第２凹状面７３は、周縁部７１の周方向範囲のうち、第２平面と交差する部分を含む一部のみに設けられている。すなわち、第２凹状面７３は、第３部分３５の中心線に沿った方向から見て、第３部分３５の周方向に沿って延びる円弧状をなしている。第２凹状面７３が設けられる周方向範囲は、例えば第２凹状面６３と同様に設定されてもよい。第２凹状面７３は、第２部分３４の中心線Ｌ２及び第３部分３５の中心線を含む断面視で、副流路である第３部分３５の中心線に対して凹んでいる。第２凹状面７３は、例えば円弧状に凹んでいる。 The second concave surface 73 of the peripheral portion 71 is provided continuous with the first concave surface 72. The second concave surface 73 is provided only in a portion of the circumferential range of the peripheral portion 71, including the portion intersecting with the second plane. That is, the second concave surface 73 is in the shape of an arc extending along the circumferential direction of the third portion 35 when viewed from the direction along the center line of the third portion 35. The circumferential range in which the second concave surface 73 is provided may be set, for example, similar to that of the second concave surface 63. The second concave surface 73 is concave with respect to the center line of the third portion 35, which is the secondary flow path, in a cross-sectional view including the center line L2 of the second portion 34 and the center line of the third portion 35. The second concave surface 73 is concave, for example, in the shape of an arc.

　これにより、周縁部６１と同様に、面取り加工を施した後の周縁部７１の角度は９０°よりも大きい鈍角となっている。つまり、第１凹状面７２及び第２凹状面７３は、第２部分３４の中心線Ｌ２及び第３部分３５の中心線を含む断面において、周縁部７１のなす角度を第３部分３５の第２部分３４に対する交差角よりも大きくするような形状を有している。 As a result, like the peripheral portion 61, the angle of the peripheral portion 71 after chamfering is an obtuse angle greater than 90°. In other words, the first concave surface 72 and the second concave surface 73 have a shape such that the angle of the peripheral portion 71 is greater than the intersection angle of the third portion 35 with the second portion 34 in a cross section including the center line L2 of the second portion 34 and the center line of the third portion 35.

　次に、ボディ１１の製造方法について説明する。
　図８に示すように、先ず、複数の取付穴及びガス流路を形成する前のボディ１１である未加工ボディを準備する（ステップ１０１）。 Next, a method for manufacturing the body 11 will be described.
As shown in FIG. 8, first, an unprocessed body, which is the body 11 before a plurality of mounting holes and gas flow paths are formed, is prepared (step 101).

　続いて、未加工ボディに複数の取付穴及びガス流路を形成する（ステップ１０２）。ステップ１０２では、第２流路１３を形成する前に複数の取付穴及び第１流路１２を形成してもよいし、第２流路１３を形成した後に複数の取付穴及び第１流路１２を形成してもよい。第２流路１３は、上記のように孔開け加工により形成される。複数の取付穴及び第１流路１２は、第２流路１３と同じ孔開け加工により、又は他の加工により形成される。 Next, a plurality of mounting holes and gas flow paths are formed in the unmachined body (step 102). In step 102, the plurality of mounting holes and the first flow path 12 may be formed before forming the second flow path 13, or the plurality of mounting holes and the first flow path 12 may be formed after forming the second flow path 13. The second flow path 13 is formed by a hole drilling process as described above. The plurality of mounting holes and the first flow path 12 are formed by the same hole drilling process as the second flow path 13, or by a different process.

　続いて、第２流路１３に圧縮加工を施す（ステップ１０３）。その後、第１部分３３及び第３部分３５の周縁部６１，７１に面取り加工を施す（ステップ１０４）。
　図９Ａに示すように、ステップ１０４では、第２部分３４に工具５３を挿入して周縁部６１に第１凹状面６２を形成する。同様に、周縁部７１に第１凹状面７２を形成する。 Next, the second flow passage 13 is subjected to compression processing (step 103), and then, the peripheral edges 61, 71 of the first portion 33 and the third portion 35 are subjected to chamfering processing (step 104).
9A, in step 104, a tool 53 is inserted into the second portion 34 to form a first concave surface 62 on the peripheral edge portion 61. Similarly, a first concave surface 72 is formed on the peripheral edge portion 71.

　続いて、図９Ｂに示すように、第１部分３３に工具５３を挿入して周縁部６１に第２凹状面６３を形成する。同様に、第３部分３５に工具を挿入して周縁部７１に第２凹状面７３を形成する。 Next, as shown in FIG. 9B, a tool 53 is inserted into the first portion 33 to form a second concave surface 63 on the peripheral portion 61. Similarly, a tool is inserted into the third portion 35 to form a second concave surface 73 on the peripheral portion 71.

　これにより、ボディ１１が製造される。なお、本製造方法は、ステップ１０１～１０４の前、途中、又は後に任意の他のステップを含んでもよい。
　次に、本実施形態の作用及び効果について説明する。 This completes the manufacture of the body 11. Note that this manufacturing method may include any other steps before, during, or after steps 101 to 104.
Next, the operation and effects of this embodiment will be described.

　（１）第２流路１３が供給源４及び消費機器５のうちのいずれか１つに選択的に接続されるように構成されるため、ガス流路における水素ガスの充填経路の一部及び水素ガスの供給経路の一部を共通化することができる。これにより、充填経路と供給経路とが互いに独立している場合に比べ、ガス流路の形状が簡素化することができ、ボディ１１の構造を簡素化することができる。 (1) Since the second flow path 13 is configured to be selectively connected to either the supply source 4 or the consumer device 5, a part of the hydrogen gas filling path in the gas flow path and a part of the hydrogen gas supply path can be made common. This simplifies the shape of the gas flow path and simplifies the structure of the body 11 compared to when the filling path and the supply path are independent of each other.

　周縁部６１が凹状面を有することで、周縁部６１のなす角度は、第１部分３３の第２部分３４に対する交差角よりも大きくなっている。また、周縁部７１が凹状面を有することで、周縁部７１のなす角度は、第３部分３５の第２部分３４に対する交差角よりも大きくなっている。そのため、例えば第２流路１３に沿って周縁部６１，７１の断面形状が急激に変化することを抑制できる。すなわち、周縁部６１，７１における応力集中係数を低下させることができる。これにより、周縁部６１，７１に作用する応力を低減できる。その結果、ボディ１１に疲労破壊が発生しにくくなり、弁アセンブリ１の長寿命化を図ることができる。 Because the peripheral portion 61 has a concave surface, the angle of the peripheral portion 61 is larger than the intersection angle of the first portion 33 with the second portion 34. Also, because the peripheral portion 71 has a concave surface, the angle of the peripheral portion 71 is larger than the intersection angle of the third portion 35 with the second portion 34. Therefore, for example, it is possible to suppress a sudden change in the cross-sectional shape of the peripheral portions 61, 71 along the second flow path 13. In other words, it is possible to reduce the stress concentration coefficient at the peripheral portions 61, 71. This makes it possible to reduce the stress acting on the peripheral portions 61, 71. As a result, fatigue failure is less likely to occur in the body 11, and the life of the valve assembly 1 can be extended.

　さらに、周縁部６１，７１は、凹状面によって面取り加工されるため、平坦面又は凸状面によって面取り加工する場合に比べ、容易に面取り加工を行うことができる。
　（２）周縁部６１は、第２部分３４の中心線Ｌ２に対して凹んだ第１凹状面６２と、第１部分３３の中心線Ｌ１に対して凹んだ第２凹状面６３とを有する。第２凹状面６３は、第１凹状面６２に連続して設けられる。これにより、周縁部６１が第１凹状面６２のみを有する場合に比べ、周縁部６１における応力集中係数を好適に低下させることができる。また、周縁部７１は、第２部分３４の中心線Ｌ２に対して凹んだ第１凹状面７２と、第３部分３５の中心線に対して凹んだ第２凹状面７３とを有する。第２凹状面７３は、第１凹状面７２に連続して設けられる。これにより、周縁部７１が第１凹状面７２のみを有する場合に比べ、周縁部７１における応力集中係数を好適に低下させることができる。 Furthermore, since the peripheral edges 61, 71 are chamfered using a concave surface, the chamfering can be performed more easily than when the chamfering is performed using a flat or convex surface.
(2) The peripheral portion 61 has a first concave surface 62 that is concave with respect to the center line L2 of the second portion 34, and a second concave surface 63 that is concave with respect to the center line L1 of the first portion 33. The second concave surface 63 is provided continuously with the first concave surface 62. This allows the stress concentration coefficient in the peripheral portion 61 to be suitably reduced compared to when the peripheral portion 61 has only the first concave surface 62. The peripheral portion 71 also has a first concave surface 72 that is concave with respect to the center line L2 of the second portion 34, and a second concave surface 73 that is concave with respect to the center line of the third portion 35. The second concave surface 73 is provided continuously with the first concave surface 72. This allows the stress concentration coefficient in the peripheral portion 71 to be suitably reduced compared to when the peripheral portion 71 has only the first concave surface 72.

　（３）第２凹状面６３を、周縁部６１の周方向範囲のうち、第１平面と交差する部分を含む一部のみに設けた。そのため、周縁部６１の全周に亘って第２凹状面６３を設ける場合に比べ、面取り加工に係る手間を削減できる。ここで、応力集中係数は、周縁部６１のうち、第１平面と交差する位置で最大となり、当該位置から周方向に離れるにつれて徐々に小さくなる。したがって、上記構成によれば、周縁部６１のうち、応力集中係数の高い部分に第２凹状面６３が設けられるため、周縁部６１に作用する応力を効率的に低減できる。 (3) The second concave surface 63 is provided only in a portion of the circumferential range of the peripheral portion 61, including the portion that intersects with the first plane. This reduces the effort required for chamfering compared to providing the second concave surface 63 over the entire circumference of the peripheral portion 61. Here, the stress concentration coefficient is maximum at the position of the peripheral portion 61 that intersects with the first plane, and gradually decreases as the distance from this position increases in the circumferential direction. Therefore, with the above configuration, the second concave surface 63 is provided in the portion of the peripheral portion 61 with a high stress concentration coefficient, thereby efficiently reducing the stress acting on the peripheral portion 61.

　また、第１凹状面７２及び第２凹状面７３を、周縁部７１の周方向範囲のうち、第２平面と交差する部分を含む一部のみに設けた。そのため、面取り加工に係る手間を削減しつつ、周縁部７１に作用する応力を効率的に低減できる。 Furthermore, the first concave surface 72 and the second concave surface 73 are provided only in a portion of the circumferential range of the peripheral portion 71, including the portion that intersects with the second plane. This makes it possible to efficiently reduce the stress acting on the peripheral portion 71 while reducing the effort required for chamfering.

　（４）周縁部６１，７１には、圧縮残留応力が付与されている。そのため、水素ガスの充填及び送出に伴う圧力変化によってガス流路の表面層に作用する引張応力が当該圧縮残留応力と打ち消し合う。これにより、周縁部６１，７１に作用する応力を低減できる。 (4) The peripheral portions 61, 71 are given compressive residual stress. Therefore, the tensile stress acting on the surface layer of the gas flow path due to pressure changes accompanying the filling and delivery of hydrogen gas cancels out the compressive residual stress. This reduces the stress acting on the peripheral portions 61, 71.

　本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変形例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
　・周縁部６１は、第１凹状面６２又は第２凹状面６３のみを有してもよい。同様に、周縁部７１は、第１凹状面７２又は第２凹状面７３のみを有してもよい。 This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that no technical contradiction occurs.
The peripheral portion 61 may have only the first concave surface 62 or the second concave surface 63. Similarly, the peripheral portion 71 may have only the first concave surface 72 or the second concave surface 73.

　・第１凹状面６２は、周縁部６１の周方向範囲のうち、第１平面と交差する部分を含む一部のみに設けられてよい。また、第２凹状面６３が周縁部６１の全周に亘って設けられてもよい。同様に、第１凹状面７２及び第２凹状面７３が周縁部７１の全周に亘って設けられてもよい。 The first concave surface 62 may be provided only in a portion of the circumferential range of the peripheral portion 61, including the portion that intersects with the first plane. The second concave surface 63 may be provided around the entire circumference of the peripheral portion 61. Similarly, the first concave surface 72 and the second concave surface 73 may be provided around the entire circumference of the peripheral portion 71.

　・周縁部６１，７１のいずれか一方のみに、面取り加工及び圧縮加工の少なくとも一方を施してもよい。
　・周縁部６１，７１に圧縮加工を施さず、面取り加工のみを施してもよい。換言すると、周縁部６１，７１は、凹状面を有していれば、圧縮残留応力が付与されていなくてもよい。 At least one of the chamfering and the compression may be performed on only one of the peripheral portions 61 and 71 .
Only chamfering may be performed without performing compression on the peripheral portions 61, 71. In other words, as long as the peripheral portions 61, 71 have a concave surface, compressive residual stress may not be imparted to them.

　・周縁部６１，７１に面取り加工を施さず、圧縮加工のみを施してもよい。換言すると、周縁部６１，７１は、圧縮残留応力が付与されていれば、凹状面を有していなくてもよい。 - The peripheral portions 61, 71 may be subjected to compression processing only without being chamfered. In other words, the peripheral portions 61, 71 may not have a concave surface as long as compressive residual stress is imparted to them.

　・圧縮加工を施すステップを、面取り加工を施すステップの後に実行してもよい。
　・第１部分３３は、第２部分３４に対して直交せずともよい。すなわち、第１部分３３の第２部分３４に対する交差角は、例えば３０°、４５°、６０°、１２０°、１３５°、１５０°等、鋭角又は鈍角であってもよい。同様に、第３部分３５は、第２部分３４に対して直交せずともよい。 The step of performing the compression process may be performed after the step of performing the chamfering process.
The first portion 33 does not have to be orthogonal to the second portion 34. That is, the intersection angle of the first portion 33 with respect to the second portion 34 may be an acute angle or an obtuse angle, for example, 30°, 45°, 60°, 120°, 135°, 150°, etc. Similarly, the third portion 35 does not have to be orthogonal to the second portion 34.

　・第２部分３４と第４部分３６との接続部分に、面取り加工及び圧縮加工の少なくとも一方を施してもよい。
　・第２流路１３を孔開け加工以外の他の加工によってボディ１１に形成してもよい。 At least one of chamfering and compression may be applied to the connecting portion between the second portion 34 and the fourth portion 36 .
The second flow passage 13 may be formed in the body 11 by a process other than drilling.

　・第２流路１３の形状は、適宜変更可能である。例えば第３部分３５は、第１部分３３と同軸上に配置されるように第２部分３４に対して交差してもよい。また、第４部分３６は、例えば第２部分３４に対して直交してもよい。この場合、第２部分３４と第４部分３６との交差部分に、面取り加工及び圧縮加工の少なくとも一方を施してもよい。さらに、第１部分３３の内径は、第２部分３４の大径部の内径と略等しくてもよいし、大径部の内径より大きくてもよい。第３部分３５の内径は、第２部分３４の小径部の内径よりも大きくてもよいし、小さくてもよい。 - The shape of the second flow path 13 can be changed as appropriate. For example, the third portion 35 may intersect with the second portion 34 so as to be arranged coaxially with the first portion 33. The fourth portion 36 may be perpendicular to the second portion 34. In this case, at least one of chamfering and compression may be applied to the intersection between the second portion 34 and the fourth portion 36. Furthermore, the inner diameter of the first portion 33 may be approximately equal to the inner diameter of the large diameter portion of the second portion 34, or may be larger than the inner diameter of the large diameter portion. The inner diameter of the third portion 35 may be larger or smaller than the inner diameter of the small diameter portion of the second portion 34.

　・弁アセンブリ１は、複合弁１５に代えて、電磁弁と、電磁弁から独立した逆止弁とを備えてもよい。また、複合弁１５は、電磁弁部のみを有し、逆止弁部を有さなくてもよい。 - The valve assembly 1 may include a solenoid valve and a check valve independent of the solenoid valve instead of the combined valve 15. Also, the combined valve 15 may have only a solenoid valve portion and not a check valve portion.

　・弁アセンブリ１は高圧の水素ガスの流通を制御したが、これに限らず、水素ガス以外のガスの流通を制御してもよい。
　次に、上記実施形態及び変形例から把握できる技術的思想について以下に追記する。 The valve assembly 1 controls the flow of high-pressure hydrogen gas, but is not limited to this and may control the flow of gases other than hydrogen gas.
Next, the technical ideas that can be understood from the above embodiment and modified examples will be described below.

　（付記１）前記弁アセンブリは、前記ボディに取り付けられる複数の弁サブアセンブリを備えるものであって、
　前記ボディは、前記第１流路及び前記第２流路に接続される第１取付穴と、前記第１流路及び前記第２流路に接続される第２取付穴とをさらに有し、
　前記弁サブアセンブリは、
　　前記第１取付穴に取り付けられる逆止弁と、
　　前記第２取付穴に取り付けられる電磁弁と、を含み、
　前記第１流路は、
　　前記第１取付穴を前記ガスタンクに接続する充填部分と、
　　前記第２取付穴を前記ガスタンクに接続する送出部分と、を含み、
　前記第２流路は、
　　前記供給源から供給されるガスの入口であるとともに前記消費機器に送出されるガスの出口である共通ポートと、
　　前記共通ポートから延びる直線状の第１部分と、
　　前記第１部分と交差する方向に延びる直線状の第２部分と、
　　前記第２部分に前記第１取付穴を接続する直線状の第３部分と、
　　前記第２部分に前記第２取付穴を接続する直線状の第４部分と、を含み、
　前記逆止弁は、前記充填部分から前記第３部分へのガスの流通を規制するとともに、前記第３部分から前記充填部分へのガスの流通を許容するように構成され、
　前記電磁弁は、前記送出部分から前記第４部分へのガスの流通を制御するように構成され、
　前記第１部分は、前記第１部分の一端が前記第２部分の内周面に開口するように前記第２部分と交差し、
　前記第３部分は、前記第３部分の一端が前記第２部分の内周面に開口するように前記第２部分と交差し、
　前記第１部分及び前記第３部分が前記副流路であり、前記第２部分が前記主流路であってもよい。 (Supplementary Note 1) The valve assembly includes a plurality of valve subassemblies attached to the body,
The body further includes a first mounting hole connected to the first flow path and the second flow path, and a second mounting hole connected to the first flow path and the second flow path,
The valve subassembly includes:
A check valve attached to the first mounting hole;
a solenoid valve attached to the second mounting hole,
The first flow path is
a filler portion connecting the first mounting hole to the gas tank;
a delivery portion connecting the second mounting hole to the gas tank;
The second flow path is
a common port for inlet of gas supplied from said source and outlet of gas delivered to said consumer;
a linear first portion extending from the common port;
a linear second portion extending in a direction intersecting the first portion;
a linear third portion connecting the first mounting hole to the second portion;
a linear fourth portion connecting the second mounting hole to the second portion,
the check valve is configured to restrict flow of gas from the filling portion to the third portion and to allow flow of gas from the third portion to the filling portion;
the solenoid valve is configured to control flow of gas from the delivery portion to the fourth portion;
the first portion intersects with the second portion such that one end of the first portion opens into an inner circumferential surface of the second portion,
the third portion intersects with the second portion such that one end of the third portion opens into an inner circumferential surface of the second portion,
The first and third portions may be the secondary flow passages, and the second portion may be the primary flow passage.

　（付記２）前記凹状面は、前記周縁部の周方向範囲のうち、前記主流路及び前記副流路の中心線を含む平面と交差する部分を含む一部にのみ設けられてもよい。
　（付記３）前記流路形成ステップは、前記ボディに対して孔開け加工を施すことを含んでもよい。 (Additional Note 2) The concave surface may be provided only in a portion of the circumferential range of the peripheral portion, including a portion that intersects with a plane that includes center lines of the main flow path and the sub-flow path.
(Additional Note 3) The flow passage forming step may include drilling holes in the body.

Claims (9)

　弁アセンブリのボディであって、
　前記ボディは、第１流路及び第２流路を含むガス流路を有し、
　前記第１流路は、ガスを貯蔵するガスタンクに接続されるように構成され、
　前記第２流路は、複数の外部機器のうちのいずれか１つに選択的に接続されるように構成され、
　前記複数の外部機器は、前記ガスタンクに充填するガスの供給源、及び前記ガスタンクから送出されるガスを消費する消費機器を含み、
　前記第２流路は、直線状に延びる孔によって区画される主流路、及び直線状に延びる孔によって区画されるとともに前記主流路と交差する副流路を含み、
　前記副流路は、前記主流路の内周面に開口する交差開口端を有し、
　前記ボディにおける前記交差開口端の周縁部は、前記主流路及び前記副流路のいずれか一方の中心線に対して凹んだ凹状面を有し、
　前記凹状面は、前記主流路及び前記副流路の中心線を含む断面において、前記周縁部のなす角度を前記副流路の前記主流路に対する交差角よりも大きくするように構成される、弁アセンブリのボディ。 A body of a valve assembly, comprising:
The body has a gas flow passage including a first flow passage and a second flow passage,
The first flow path is configured to be connected to a gas tank that stores a gas,
The second flow path is configured to be selectively connected to any one of a plurality of external devices;
The plurality of external devices include a gas supply source for filling the gas tank and a consumer device for consuming the gas delivered from the gas tank,
the second flow path includes a main flow path defined by a hole extending linearly, and a sub-flow path defined by a hole extending linearly and intersecting the main flow path,
the sub-flow passage has an intersecting opening end that opens to an inner circumferential surface of the main flow passage,
a peripheral portion of the intersecting opening end of the body has a concave surface that is concave with respect to a center line of either one of the main flow passage and the sub flow passage,
A body of a valve assembly, wherein the concave surface is configured such that, in a cross section including the center lines of the main flow passage and the secondary flow passage, the angle formed by the peripheral portion is greater than the intersection angle of the secondary flow passage with the main flow passage. 　請求項１に記載の弁アセンブリのボディであって、
　前記凹状面は、第１凹状面であり、
　前記周縁部は、前記主流路及び前記副流路の他方の中心線に対して凹んだ第２凹状面であって、前記第１凹状面に連続して設けられる第２凹状面をさらに有し、
　前記第２凹状面は、前記主流路及び前記副流路の中心線を含む断面において、前記周縁部のなす角度を前記交差角よりも大きくするように構成される、弁アセンブリのボディ。 2. A body for a valve assembly according to claim 1, comprising:
the concave surface is a first concave surface;
the peripheral portion further includes a second concave surface that is concave with respect to a center line of the other of the main flow path and the sub-flow path and is provided continuously with the first concave surface,
A body of a valve assembly, wherein the second concave surface is configured such that an angle formed by the peripheral edges is greater than the intersection angle in a cross section including center lines of the main flow path and the secondary flow path. 　請求項２に記載の弁アセンブリのボディであって、
　前記第２凹状面は、前記周縁部の周方向範囲のうち、前記主流路及び前記副流路の中心線を含む平面と交差する部分を含む一部のみに設けられる、弁アセンブリのボディ。 3. A body for a valve assembly according to claim 2, comprising:
A body of a valve assembly, wherein the second concave surface is provided only in a portion of the circumferential range of the peripheral edge, including a portion intersecting with a plane including center lines of the main flow path and the secondary flow path. 　請求項１～３のいずれか一項に記載の弁アセンブリのボディであって、
　前記周縁部には、圧縮残留応力が付与されている、弁アセンブリのボディ。 A body of a valve assembly according to any one of claims 1 to 3, comprising:
The body of a valve assembly, wherein the peripheral edge is imparted with compressive residual stress. 　弁アセンブリのボディであって、
　前記ボディは、第１流路及び第２流路を含むガス流路を有し、
　前記第１流路は、ガスを貯蔵するガスタンクに接続されるように構成され、
　前記第２流路は、複数の外部機器のうちのいずれか１つに選択的に接続されるように構成され、
　前記複数の外部機器は、前記ガスタンクに充填するガスの供給源、及び前記ガスタンクから送出されるガスを消費する消費機器を含み、
　前記第２流路は、直線状に延びる孔によって区画される主流路、及び直線状に延びる孔によって区画されるとともに前記主流路と交差する副流路を含み、
　前記副流路は、前記主流路の内周面に開口する交差開口端を有し、
　前記ボディにおける前記交差開口端の周縁部には、圧縮残留応力が付与されている、弁アセンブリのボディ。 A body of a valve assembly, comprising:
The body has a gas flow passage including a first flow passage and a second flow passage,
The first flow path is configured to be connected to a gas tank that stores a gas,
The second flow path is configured to be selectively connected to any one of a plurality of external devices;
The plurality of external devices include a gas supply source for filling the gas tank and a consumer device for consuming the gas delivered from the gas tank,
the second flow path includes a main flow path defined by a hole extending linearly, and a sub-flow path defined by a hole extending linearly and intersecting the main flow path,
the sub-flow passage has an intersecting opening end that opens to an inner circumferential surface of the main flow passage,
A body for a valve assembly, wherein a peripheral portion of the intersecting open end of the body is imparted with compressive residual stress. 　弁アセンブリのボディの製造方法であって、前記ボディは、第１流路及び第２流路を含むガス流路を有し、
　前記第１流路は、ガスを貯蔵するガスタンクに接続されるように構成され、
　前記第２流路は、複数の外部機器のうちのいずれか１つに選択的に接続されるように構成され、
　前記複数の外部機器は、前記ガスタンクに充填するガスの供給源、及び前記ガスタンクから送出されるガスを消費する消費機器を含み、
　前記第２流路は、直線状に延びる孔によって区画される主流路、及び直線状に延びる孔によって区画されるとともに前記主流路と交差する副流路を含み、
　前記副流路は、前記主流路の内周面に開口する交差開口端を有し、
　前記ボディにおける前記交差開口端の周縁部は、前記主流路及び前記副流路のいずれか一方の中心線に対して凹んだ凹状面を有し、
　前記凹状面は、前記主流路及び前記副流路の中心線を含む断面において、前記周縁部のなす角度を前記副流路の前記主流路に対する交差角よりも大きくするように構成されるものであって、
　前記製造方法は、
　前記ボディに前記第２流路を形成する流路形成ステップと、
　前記周縁部に前記凹状面を形成する面取り加工ステップと、を含む、弁アセンブリのボディの製造方法。 1. A method of manufacturing a body of a valve assembly, the body having a gas flow passage including a first flow passage and a second flow passage,
The first flow path is configured to be connected to a gas tank that stores a gas,
The second flow path is configured to be selectively connected to any one of a plurality of external devices;
The plurality of external devices include a gas supply source for filling the gas tank and a consumer device for consuming the gas delivered from the gas tank,
the second flow path includes a main flow path defined by a hole extending linearly, and a sub-flow path defined by a hole extending linearly and intersecting the main flow path,
the sub-flow passage has an intersecting opening end that opens to an inner circumferential surface of the main flow passage,
a peripheral portion of the intersecting opening end of the body has a concave surface that is concave with respect to a center line of either one of the main flow passage and the sub flow passage,
The concave surface is configured such that an angle formed by the peripheral edge portion is larger than an angle of intersection of the secondary flow path with the main flow path in a cross section including center lines of the main flow path and the secondary flow path,
The manufacturing method includes:
a flow passage forming step of forming the second flow passage in the body;
and a chamfering step of forming the concave surface on the peripheral portion. 　請求項６に記載の弁アセンブリのボディの製造方法であって、
　前記凹状面は、第１凹状面であり、
　前記周縁部は、前記主流路及び前記副流路の他方の中心線に対して凹んだ第２凹状面であって、前記第１凹状面に連続して設けられる第２凹状面をさらに有し、
　前記第２凹状面は、前記主流路及び前記副流路の中心線を含む断面において、前記周縁部のなす角度を前記交差角よりも大きくするように構成されるものであって、
　前記面取り加工ステップは、
　　前記主流路及び前記副流路のいずれか一方に工具を挿入して前記周縁部に前記第１凹状面を形成することと、
　　前記主流路及び前記副流路の他方に工具を挿入して前記周縁部に前記第２凹状面を形成することと、を含む、弁アセンブリのボディの製造方法。 7. A method of manufacturing a body of a valve assembly according to claim 6, comprising the steps of:
the concave surface is a first concave surface;
the peripheral portion further includes a second concave surface that is concave with respect to a center line of the other of the main flow path and the sub-flow path and is provided continuously with the first concave surface,
The second concave surface is configured such that an angle formed by the peripheral edge portions is larger than the intersection angle in a cross section including center lines of the main flow path and the sub-flow path,
The chamfering step includes:
inserting a tool into one of the main flow path and the sub-flow path to form the first concave surface on the peripheral portion;
and inserting a tool into the other of the main flow passage and the secondary flow passage to form the second concave surface on the periphery. 　請求項６又は７に記載の弁アセンブリのボディの製造方法であって、
　前記製造方法は、前記周縁部に、圧縮残留応力を付与する圧縮加工ステップをさらに含み、
　前記圧縮加工ステップは、前記面取り加工ステップの前に実行される、弁アセンブリのボディの製造方法。 8. A method of manufacturing a body of a valve assembly according to claim 6 or 7, comprising the steps of:
The manufacturing method further includes a compression processing step of imparting compressive residual stress to the peripheral portion,
A method for manufacturing a body of a valve assembly, wherein the compression step is performed before the chamfering step. 　弁アセンブリのボディの製造方法であって、前記ボディは、第１流路及び第２流路を含むガス流路を有し、
　前記第１流路は、ガスを貯蔵するガスタンクに接続されるように構成され、
　前記第２流路は、複数の外部機器のうちのいずれか１つに選択的に接続されるように構成され、
　前記複数の外部機器は、前記ガスタンクに充填するガスの供給源、及び前記ガスタンクから送出されるガスを消費する消費機器を含み、
　前記第２流路は、直線状に延びる孔によって区画される主流路、及び直線状に延びる孔によって区画されるとともに前記主流路と交差する副流路を含み、
　前記副流路は、前記主流路の内周面に開口する交差開口端を有するものであって、
　前記製造方法は、
　前記ボディに前記第２流路を形成する流路形成ステップと、
　前記ボディにおける前記交差開口端の周縁部に、圧縮残留応力を付与する圧縮加工ステップと、を含む、弁アセンブリのボディの製造方法。 1. A method of manufacturing a body of a valve assembly, the body having a gas flow passage including a first flow passage and a second flow passage,
The first flow path is configured to be connected to a gas tank that stores a gas,
The second flow path is configured to be selectively connected to any one of a plurality of external devices;
The plurality of external devices include a gas supply source for filling the gas tank and a consumer device for consuming the gas delivered from the gas tank,
the second flow path includes a main flow path defined by a hole extending linearly, and a sub-flow path defined by a hole extending linearly and intersecting the main flow path,
The sub-flow passage has an intersecting opening end that opens to an inner circumferential surface of the main flow passage,
The manufacturing method includes:
a flow passage forming step of forming the second flow passage in the body;
a compressive processing step of imparting compressive residual stress to a peripheral portion of the intersecting open end of the body.
PCT/JP2023/032355 2023-09-05 2023-09-05 Body of valve assembly and method for manufacturing body of valve assembly Pending WO2025052539A1 (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3020535U (en) * 1993-12-27 1996-02-02 キャタピラー インコーポレイテッド Failure of high pressure fluid passage to high pressure fluid cavity
JPH10507A (en) * 1996-06-10 1998-01-06 Okuma Mach Works Ltd Chamfering tool and chamfering method
JPH1078175A (en) * 1996-08-30 1998-03-24 Usui Internatl Ind Co Ltd High-pressure fuel rail and its manufacture
JPH10318085A (en) * 1997-03-03 1998-12-02 Usui Internatl Ind Co Ltd Manufacture of common rail
JP2004027968A (en) * 2002-06-26 2004-01-29 Otics Corp Common rail and method of manufacturing the same
JP2008133831A (en) * 2006-11-27 2008-06-12 Delphi Technologies Inc Housing with cross passage
JP2009068371A (en) * 2007-09-11 2009-04-02 Denso Corp pump
JP2011106463A (en) * 2005-06-06 2011-06-02 Delphi Technologies Holding Sarl Machining method
JP2017101697A (en) * 2015-11-30 2017-06-08 株式会社ジェイテクト Valve device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3020535U (en) * 1993-12-27 1996-02-02 キャタピラー インコーポレイテッド Failure of high pressure fluid passage to high pressure fluid cavity
JPH10507A (en) * 1996-06-10 1998-01-06 Okuma Mach Works Ltd Chamfering tool and chamfering method
JPH1078175A (en) * 1996-08-30 1998-03-24 Usui Internatl Ind Co Ltd High-pressure fuel rail and its manufacture
JPH10318085A (en) * 1997-03-03 1998-12-02 Usui Internatl Ind Co Ltd Manufacture of common rail
JP2004027968A (en) * 2002-06-26 2004-01-29 Otics Corp Common rail and method of manufacturing the same
JP2011106463A (en) * 2005-06-06 2011-06-02 Delphi Technologies Holding Sarl Machining method
JP2008133831A (en) * 2006-11-27 2008-06-12 Delphi Technologies Inc Housing with cross passage
JP2009068371A (en) * 2007-09-11 2009-04-02 Denso Corp pump
JP2017101697A (en) * 2015-11-30 2017-06-08 株式会社ジェイテクト Valve device

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