JP3590843B2 - Piping attachment / detachment device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piping attachment / detachment device that is used in a connection portion of various pipes for delivering a fluid, and that enables one-touch connection between pipes easily.
[0002]
[Prior art]
FIG. 14 is a perspective view showing a configuration of a conventional pipe attaching / detaching apparatus. In the drawing, reference numeral 21 denotes a rubber seal ring, and reference numeral 22 denotes a connecting portion of one of the pipes, which has a flange portion larger than the outer diameter of the pipe. Reference numeral 23 denotes a connection portion of the other pipe, which has a thread portion having an outer diameter substantially equal to the outer diameter of the flange portion. Numeral 24 is a cap nut having a through hole 24a, on the inner surface of which is formed a female screw portion to be screwed with a screw portion formed at the connection portion of the other pipe. Slightly larger than the outside diameter of the piping.
[0003]
FIG. 15 is a cross-sectional view showing a state where the one pipe and the other pipe are connected. In FIG. 15, the same or corresponding parts as those in FIG. 14 are denoted by the same reference numerals. As shown in FIG. 15, the cap nut 24 is previously fitted outside the one pipe, and the flange portion formed at the connection part 22 of the one pipe abuts on the inner surface of the through hole 24 a. It does not come off from the one pipe. When connecting the one pipe and the other pipe, the screw portion of the connection portion 23 of the other pipe is screwed into the cap nut 24 provided in the one pipe, and the cap nut 24 is rotated. Then, the connection part 23 of the other pipe is pulled into the cap nut 23, and the connection part 22 of the one pipe and the connection part 23 of the other pipe are pressed into contact with each other via the seal ring 21 to be connected in a watertight manner.
[0004]
In addition, there is a piping attachment / detachment device having a structure different from that of the piping attachment / detachment device shown in FIG. In the figure, 25 is a joint member connected to one pipe, 26 is a seal ring, 27 is a joint member connected to the other pipe, and 28 is a U-shaped clip member.
[0005]
17 is a cross-sectional structural view showing a connection state of the pipe attaching / detaching apparatus of FIG. 16 including a center axis, and FIG. 18 is an aa cross-sectional view of FIG. 17 showing a mounting state of the clip member 28. As shown in these figures, the joint member 27 is fitted into the joint member 25, and at this time, the joint member 25 and the joint member 27 are watertightly connected by the seal ring 26. In addition, a clip member 28 is inserted into the joint between the joint member 25 and the joint member 27 from a direction orthogonal to the center axis of the joint, and the joint state between the joint member 25 and the joint member 27 is maintained. The connected state is not released.
[0006]
[Problems to be solved by the invention]
Since the conventional pipe attachment / detachment device is configured as described above, in the pipe attachment / detachment device using the cap nut 24, the connection efficiency of the pipe is reduced by rotating the cap nut 24, so that the work efficiency is low and the time required for the connection of the pipe is low. In addition, the quality of the sealing state at the pipe connection is affected by the degree of tightening of the connection 23 of the other pipe and the connection 22 of the one pipe by the rotation of the cap nut 24, and the connection of the pipe is stabilized. There was a problem that it was not easy to perform well.
[0007]
Further, in the piping attachment / detachment device using the clip member 28, it is necessary to insert the clip member 28 into the joint between the joint member 25 and the joint member 27, and there is a problem that the workability is not good.
[0008]
In addition, although common to each of the above-mentioned piping attaching / detaching devices, the sealing ring 21 and the clip member 28 may be lost because they are used as independent components, respectively. When performing the work, there is a problem that the loss of the seal ring 21 and the clip member 28 causes a delay in the work of connecting the pipes.
[0009]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and facilitates the work of connecting pipes, the work of separating connected pipes, and the workability and efficiency in connecting and separating pipes. It is an object of the present invention to provide a piping attachment / detachment device in which the above is improved.
[0010]
[Means for Solving the Problems]
The pipe attachment / detachment device according to the present invention includes a first joint having connection means for connecting to one of the pipes, and a connection means for connecting to the other of the pipes. a second joint portion for connecting the first joint portion partly fitted into the first joint portion and the water-tight you connected watertightly provided between the connecting portion between the second joint portion Connecting means, a locked groove formed on the outer peripheral surface of the connecting portion of the second joint portion, and a joint body for maintaining a connected state between the first joint portion and the second joint portion; The joint body includes a base attached to the first joint portion so as to cover an outer side of a connection portion between the first joint portion and the second joint portion, and a latch engaged with and disengaged from the locked groove. A projection is formed, and the axis of the second joint is A locking claw attached to the base so as to be movable in a direction perpendicular to the direction, and a locking projection that is attached to the base so as to sandwich the second joint portion between the locking claw and the locking claw while being connected to the locking claw. A lock button urging means for urging the release button so that the lock claw moves in a direction in which the locking projection engages with the locked groove. It is characterized by having.
[0012]
Further, the pipe attaching / detaching apparatus according to the present invention is characterized in that the head of the release button of the lock claw operating means is configured to be at the same level or less with respect to the joint body surface.
[0013]
Further, the joint body of the pipe attaching / detaching device according to the present invention includes an operation piece for moving the lock claw in a direction in which the locking protrusion is disengaged from engagement with the locked groove, and the operation piece is The locking claw is formed in a protruding shape .
[0014]
Further , the joint body of the piping attachment / detachment device according to the present invention includes a lock pin that is inserted and removed from the base to the lock claw, and the engagement between the locking protrusion and the locked groove is made by inserting the lock pin. It is characterized by being fixed .
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The piping attachment / detachment device according to the present embodiment includes three parts: a first joint, a second joint, and a joint body . FIG. 1 is a structural diagram showing a configuration of a piping attachment / detachment device including three parts, a first joint portion, a second joint portion, and a base constituting a joint body, and FIG. FIG. 2B is a front view, FIG. 2B is a sectional view taken along line AA in FIG. 2A, and FIG. 2C is a right side view of FIG. In these figures, reference numeral 1 denotes a first joint to which one pipe is connected, 2 denotes a second joint connected to the first joint 1, and 5 denotes the first joint 1 and the second joint. first base attached to the joint portion 1 so as to cover the outside of the connecting portion between the joint portion, 7 is operated to release the connection between the joint portion 2 of the first joint part 1 and the second Release button.
[0016]
FIG. 2 is a sectional view showing the internal structure of the base 5 constituting the joint body. In the figure, reference numeral 4 denotes a joint body, which comprises a base 5, a lock claw 6, a release button 7, a lock claw biasing spring 8, and the like. A stepped hole 5a into which the tip of the second joint portion 2 is inserted is formed in the base 5, a lock claw 6 formed in a U-shape, and a release formed integrally with the lock claw 6 Button 7 is incorporated. A chamfered portion 5c is formed at one end of the stepped hole 5a to facilitate insertion of the tip of the second joint portion 2.
[0017]
Figure 3 is a cross-sectional view showing the first internal structure of the joint portion 1. In the drawing, reference numeral 1a denotes a groove provided between a connecting portion between the first joint portion 1 and the second joint portion 2 and in which the seal ring 3 is fitted, and 1b denotes the other end of the stepped hole 5a of the base 5. The flange portion 1c engaging with the portion is a flow hole which is a fluid passage.
Figure 4 is a cross-sectional view showing a second inner structure of the joint portion 2. In the drawing, reference numeral 2a denotes a locked groove formed on the outer peripheral surface of the connecting portion of the second joint portion 2 and engaged with the lock claw 6, and 2b denotes a seal ring fitted in the groove 1a of the first joint portion 1. 3 and a fitting hole 2c externally fitted on the peripheral surface of the first joint portion 1 in which the groove 1a is formed are chamfered portions for facilitating insertion of the first joint portion 1. The inner diameter of the fitting hole 2b is slightly smaller than the outer diameter of the seal ring 3 fitted in the groove 1a of the first joint portion 1 with a predetermined tolerance.
[0018]
6A and 6B are configuration diagrams showing the structure of the lock claw 6, wherein FIG. 6A is a front view of the lock claw 6, FIG. 6B is a plan view of FIG. FIG. 4A is a bottom view of FIG. 4A, FIG. 4D is a left side view of FIG. 4A, FIG. 4E is a sectional view taken along line A-A of FIG. It is BB sectional drawing of the same figure (b). In the drawing, reference numeral 6a is formed on the inner surface of the bottom of the lock claw 6 formed in a U-shape, and the sawtooth-shaped locking projections that engage with the locked grooves 2a of the second joint portion 2; Fitting recesses for integrally assembling the release buttons 7 formed at both ends of the U-shaped lock claw 6 are formed on both sides of the end of the U-shaped lock claw 6. Abutting projections.
[0019]
5A and 5B are configuration diagrams showing details of the structure of the base 3 shown in FIG. 2, wherein FIG. 5A is a front view of the base 5, and FIG. 5B is a cross-sectional view taken along line AA in FIG. FIG. 1C is a cross-sectional view taken along line BB of FIG. 1B, FIG. 1D is a right side view of FIG. 1C, and FIG. 1D is a bottom view of FIG. 1C. It is. In the drawing, reference numeral 5b denotes an insertion hole formed perpendicular to the stepped hole 5a for inserting the lock claw 6, and 5d denotes one end of the lock claw biasing spring 8 whose base end is connected to the side wall of the insertion hole 5b. It is a spring support part for supporting. A lock claw biasing spring 8 is arranged between the spring support portion 5d and the spring receiving portion 7c of the release button 7. As a result, the lock claw 6 and the release button 7 integrally assembled with the lock claw 6 are , Are always urged in the direction of arrow (a) shown in FIG. Reference numeral 5e is formed at one end of the insertion hole 5d and abuts with contact projections 6d formed on both sides of the end of the lock claw 6 to restrict the movement of the lock claw 6 in the direction of the arrow (a) shown in FIG. The contact recess is in contact.
[0020]
7A and 7B are configuration diagrams showing the structure of the release button. FIG. 7A is a front view of the release button, FIG. 7B is a bottom view of FIG. 7A, and FIG. It is AA sectional drawing of a). In the figure, 7a and 7b are formed in a wedge shape to be fitted with fitting concave portions 6b and 6c for integrally assembling release buttons 7 formed at both ends of a U-shaped lock claw 6. The fitted projection 7c is the spring receiving portion of the release button 7. The fitting projections 7a and 7b are fitted with the fitting recesses 6b and 6c of the release button 7, and the release button 7 and the U-shaped lock claw 6 are integrally assembled.
[0021]
FIG. 8 is a perspective view showing a release button 7 incorporated in the base 5 and a lock claw 6 formed in a U-shape. FIG. 9 shows a state in which the first joint part 1 and the second joint part 2 are incorporated in the base 5, the resin hose 9 is connected to the first joint part 1, and the connection part is fastened by the band 10. FIG.
[0022]
Next, the operation of the pipe attaching / detaching apparatus of this embodiment will be described.
As shown in FIG. 9, in this pipe attaching / detaching apparatus, a first joint 1 is inserted into a joint body 4 and the joint body 4 is integrated with the first joint 1. Are connected to the first joint portion 1 by being tightened by a band 10.
In this state, the end of the first joint 1 on the side where the seal ring 3 is fitted is inserted into the fitting hole 2b of the second joint 2. As a result, the second joint 2 is watertightly connected to the first joint 1 at the large diameter portion of the stepped hole 5a of the base 5. At this time, the saw-tooth-shaped locking projection 6a of the lock claw 6 also moves in a direction orthogonal to the center axis of the connected first joint 1 and second joint 2 (direction B in FIG. 9). After having escaped, it moves in the direction (a direction in FIG. 9) urged by the lock claw urging spring 8 and engages with the locked groove portion 2a of the second joint portion 2. Then, the connected first joint portion 1 and second joint portion 2 are fixed in the base 5.
[0023]
To release the connection between the first joint portion 1 and the second joint portion 2, first, the release button 7 is turned in the opposite direction to the direction in which the lock pawl biasing spring 8 is urged (FIG. 9). (B) direction. As a result, the lock claw 6 moves in a direction orthogonal to the central axis of the first joint portion 1 and the second joint portion 2 connected to each other, and the locking claw 6 has a sawtooth-shaped locking projection 6a. The engagement with the locked groove 2a is released. As a result, the connection between the first joint 1 and the second joint 2 is released by pulling out the second joint 2 from the first joint 1. At this time, the first joint portion 1 is held in the stepped hole 5a of the base 5 by the resin hose 9 and the band 10, and is pulled out together with the second joint portion 2 from the stepped hole 5a of the base 5. Never.
[0024]
As described above, in this embodiment, the connection and disconnection of the first joint 1 and the second joint 2 can be easily performed with a single touch, and the work of connecting the pipes and the work of separating the connected pipes can be performed. The workability when performing is improved.
[0025]
Next, a piping attachment / detachment device according to another embodiment of the present invention will be described.
The piping attachment / detachment device of the embodiment has a structure in which the upper surface of the release button 7 protrudes from the mounting surface of the release button 7 on the base 5 as shown in FIG. For this reason, it is assumed that the release button 7 is erroneously depressed by grasping the joint body 4 during the pipe connection operation or the inspection operation. In the piping attachment / detachment device of the present embodiment, a piping attachment / detachment device capable of reliably preventing such an erroneous operation is provided.
FIG. 10 is a front view showing the configuration of the piping attachment / detachment device of this embodiment, FIG. 11 (a) is a cross-sectional view taken along line AA in FIG. 10, and FIG. 11 (b) is a left side view of FIG. is there. FIG. 12A is an enlarged view of the AA cross section shown in FIG. 11A, and FIG. 12B is a right side view. FIG. 13 is an enlarged view of the BB cross-sectional view shown in FIG. In these figures, the same or corresponding parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and description thereof is omitted.
In these figures, the upper surface of the release button 7 is at the same level as the mounting surface 5p of the release button 7 on the base 5 or lower than the mounting surface 5p of the release button 7. Reference numeral 6f denotes an operation piece formed at the lower end of the lock claw 6, and 6g denotes a through hole formed in the operation piece 6f. 5f is a through hole formed in the base 5, 6e is a through hole formed in the lock claw 6, and the through holes 5f and 6e are sawtooth-shaped locking projections 6a and locked grooves 2a of the locking claw 6. Are formed at positions where they are coaxial with each other when they are engaged. Reference numeral 13 denotes a lock pin which is inserted into the coaxial through-holes 5f and 6e in a state where the serrated locking projection 6a of the lock claw 6 is engaged with the locked groove 2a.
[0026]
Next, the operation of the piping attachment / detachment device will be described.
To release the connection between the first joint portion 1 and the second joint portion 2, the release button 7 is pressed in a direction opposite to the direction biased by the lock claw biasing spring 8, or The operation is performed by pulling the operation piece 6f in a direction opposite to the direction in which the operation is performed by the lock claw urging spring 8. At this time, for example, the tip of a driver may be inserted into the through hole 6g formed in the operation piece 6f to pull the operation piece 6f. As a result, the lock claw 6 moves in a direction orthogonal to the central axis of the first joint portion 1 and the second joint portion 2 connected to each other, and the locking claw 6 has a sawtooth-shaped locking projection 6a. The engagement with the locked groove 2a is released. As a result, the connection between the first joint 1 and the second joint 2 is released by pulling out the second joint 2 from the first joint 1. At this time, the first joint portion 1 is held in the stepped hole 5a of the base 5 by the resin hose 9 and the band 10, and is pulled out together with the second joint portion 2 from the stepped hole 5a of the base 5. Never.
[0027]
Further, in this piping attachment / detachment device, the connected first joint portion 1 and second joint portion 2 are locked in a state fixed in the base 5, and the first joint portion 1 and the second joint portion are erroneously operated. It is possible to prevent the connection with 2 from being easily released. That is, by inserting the lock pin 13 into the through-holes 5f and 6e that are coaxial with the first joint portion 1 and the second joint portion 2 connected to each other being fixed in the base 5, the lock claws 6 are formed. Is fixed to the base 5 by the lock pin 13 and cannot be operated to press the release button 7 or pull out the operation piece 6f, and the connected first joint portion 1 and second joint portion 2 are inside the base 5. Is maintained in a securely fixed state.
[0028]
As described above, in this embodiment, the connection and disconnection of the first joint portion 1 and the second joint portion 2 can be easily performed with one touch, and furthermore, the release button is pressed by mistake. Not only improves workability and work efficiency when connecting pipes and separating connected pipes, but also inadvertently disconnects connected pipes due to erroneous operations during work. As a result, the fluid in the pipe is prevented from flowing out, and safety is improved.
[0029]
【The invention's effect】
As described above, according to the present invention, the pipe connecting operation is performed only by fitting the first joint portion and the second joint portion in the joint main body, and the first joint portion and the connected first joint portion are connected to each other. Since the second joint portion is automatically locked in the joint main body, the connecting operation of the pipes and the separating operation of the connected pipes can be easily performed with one touch, and the connecting and separating of the pipes is performed. This has the effect of improving workability and efficiency.
[0030]
In addition, the head of the release button of the lock claw operation means is configured to be at the same level or less with respect to the joint body surface, so the release button is operated due to erroneous operation during work, and the connected piping is careless To prevent the fluid in the pipe from flowing out to the outside, thereby improving safety.
[0031]
In addition, the connected state of the first joint portion and the second joint portion can be fixed by the lock claw fixing means. Is prevented from flowing out to the outside, and the safety is improved.
[0032]
Also, since an operation piece is provided which protrudes from the joint body back surface opposite to the joint body surface on which the release button is formed, and pulls the lock claw out of the locked groove by pulling in the pressing direction of the release button. The release button is not pressed even if the joint body is gripped during work, preventing the connected pipes from being inadvertently separated due to erroneous operation during work and the fluid in the pipes flowing out This has the effect of improving safety.
[0033]
Further, conventionally, since the seal ring and the clip member are each used as an independent part, there is a case that the seal ring and the clip member are separated and lost, but since the present invention is an integral part, the parts can be lost without being separated. Few.
[Brief description of the drawings]
FIG. 1 is a structural diagram showing a configuration of a pipe attaching / detaching apparatus according to an embodiment of the present invention.
FIG. 2 is a sectional configuration diagram showing an internal structure of a base constituting a joint main body of the pipe attaching / detaching apparatus according to one embodiment of the present invention.
FIG. 3 is a cross-sectional configuration diagram showing an internal structure of a first joint portion of the pipe attaching / detaching apparatus according to one embodiment of the present invention.
FIG. 4 is a cross-sectional configuration diagram showing an internal structure of a second joint portion of the pipe attaching / detaching apparatus according to one embodiment of the present invention.
FIG. 5 is a configuration diagram showing details of a structure of a base in the piping attachment / detachment device according to one embodiment of the present invention.
FIG. 6 is a configuration diagram showing a structure of a lock claw in a pipe attaching / detaching apparatus according to an embodiment of the present invention.
FIG. 7 is a configuration diagram showing a structure of a release button in the piping attachment / detachment device according to one embodiment of the present invention.
FIG. 8 is a perspective view showing a release button and a lock claw to be incorporated into a base in the piping attachment / detachment device according to one embodiment of the present invention.
FIG. 9 is a cross-sectional structural view showing a state in which a first joint portion and a second joint portion are incorporated into a base in the piping attachment / detachment device according to one embodiment of the present invention.
FIG. 10 is a front view showing a configuration of a piping attachment / detachment device according to another embodiment of the present invention.
11 is a cross-sectional view taken along line AA in FIG. 10 (a) and a left side view thereof (b).
FIG. 12 is an enlarged view of FIG. 11A.
FIG. 13 is an enlarged view of the BB cross-sectional view shown in FIG.
FIG. 14 is a perspective view showing a configuration of a conventional pipe attaching / detaching apparatus.
FIG. 15 is a cross-sectional view showing a state in which one pipe and the other pipe in a conventional pipe attaching / detaching apparatus are connected.
FIG. 16 is a perspective view showing a configuration of a conventional pipe attaching / detaching apparatus.
FIG. 17 is a cross-sectional structural view showing a connected state in a conventional pipe attaching / detaching apparatus, in a section including a central axis.
FIG. 18 is a sectional view taken along a line aa in FIG. 17 showing a mounting state of a clip member in a conventional pipe attaching / detaching apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st joint part 2 2nd joint part 3 Seal ring (watertight connection means)
2a Locked groove 4 Joint body 5b Insertion hole (lock claw movable means)
5e Contact recess (lock claw movable means)
5f through hole (lock claw fixing means)
6 Lock claw 6a Locking protrusion 6e Through hole 6f Operation piece (lock claw fixing means)
7 Release button (lock claw operating means)
8 Lock pawl biasing spring (Lock pawl biasing means)
13 Lock pin (lock claw fixing means)

Claims (4)

A first joint portion having connection means for connecting to one of the pipes,
A connecting means for connecting to the other pipe, and a second joint portion for connecting the first joint portion is fitted in a portion of the first joint portion,
And water tight connection means you connected watertightly provided between the connection portion between the first joint portion and the second joint portion,
A locked groove formed on the outer peripheral surface of the connecting portion of the second joint portion;
A joint body for maintaining a connection state between the first joint portion and the second joint portion,
The joint body is
A base attached to the first joint portion so as to cover an outside of a connection portion between the first joint portion and the second joint portion;
A locking claw formed with a locking projection engaging and disengaging from the locked groove, the locking claw being attached to the base so as to be movable in a direction orthogonal to an axial direction of the second joint portion;
A release button that is attached to the base so as to sandwich the second joint portion between the lock claw and the lock claw while being connected to the lock claw, and that releases the engagement between the locking protrusion and the locked groove;
And a lock pawl urging means for urging the release button so that the lock pawl moves in a direction in which the locking projection engages the locked groove. The piping attachment / detachment device according to claim 1, wherein the head of the release button is configured to be at the same level or lower than the base surface. The joint body is
An operation piece for moving the lock claw in a direction in which the locking protrusion is disengaged from engagement with the locked groove,
The piping attachment / detachment device according to claim 1, wherein the operation piece is formed in a protruding shape on the lock claw. The joint body is
It has a lock pin that is inserted and removed from the base to the lock claw,
2. The piping attachment / detachment device according to claim 1, wherein the engagement between the locking projection and the locked groove is fixed by inserting the lock pin.

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