JP5746117B2 - Gas pipe connection structure - Google Patents

Description

  The present invention relates to a gas pipe connection structure for connecting one gas pipe and a pair of gas controllers arranged on both sides of the gas pipe.

  Conventionally, in a gas stove, a gas controller such as a gas cock or a gas valve provided with an operation mechanism is provided, and the fire extinguishing of the stove burner and the heating power adjustment are performed by an operation of a knob provided in the operation mechanism. This type of gas controller includes a body having a gas passage formed therein, and fuel gas is supplied to the gas passage from a gas pipe connected to the body.

  For example, in a two-port gas stove equipped with two stove burners, two gas controllers are provided adjacent to each other in order to individually operate the combustion of each stove burner (see Patent Document 1 below). In this case, by extending the gas pipe linearly between the two gas controllers, the fuel gas can be supplied from one gas pipe to the gas controllers on both sides thereof, and the piping can be simplified. it can.

  By the way, in general, in order to distribute the fuel gas of one gas pipe to both gas controllers, a flow path member for connection is provided between the gas pipe and both gas controllers. This type of flow path member includes a gas flow path that branches in a T shape inside, and includes three connection ports corresponding to the respective gas flow paths. And the terminal part of a gas pipe is connected with a central connection port among three connection ports, and a gas controller is connected with each of the other two connection ports. By doing so, the fuel gas can be distributed and supplied from one gas pipe to the two gas controllers.

Japanese Utility Model Publication No. 7-44563 (Fig. 3)

  However, when connected using the flow path member, three connection points are formed between the three connection ports, the gas pipe, and the pair of gas controllers. For this reason, not only connection work is required for each of the three connection points, but also it is necessary to ensure the sealing performance at each connection point, so the structure of the connection member becomes complicated and the manufacturing cost increases. there were.

  In view of the above points, the present invention can connect one gas pipe and the gas controllers on both sides thereof without using a connecting flow path member, etc. An object of the present invention is to provide a gas pipe connection structure that can reduce the cost by reducing the number of points.

To achieve the above object, the present invention is to provide a pair of the gas controller is disposed on both sides of a single gas pipe, a connection structure of a gas pipe connecting the gas pipe, both gases The operating shaft protruding from each body of the controller is oriented in the same direction, and the gas pipe extends between the bodies of both gas controllers in a posture extending in the same direction as the protruding direction of both operating shafts. And an extension pipe extending in a direction perpendicular to the projecting direction of the operation shaft toward the gas pipe, having a communication passage communicating with the gas flow path in the body in each of the gas controllers. And a contact portion that has a shape corresponding to the peripheral wall of the gas pipe and is in contact with the gas pipe via a seal member at the tip of the extension pipe part of each of the gas controllers. And providing a cylindrical convex portion that communicates with the communication path, The opposing surface of the wall, a pair of holes for inserting the respective protruding portion when the abutting portion of both the gas controller abuts provided, on the extension extraction pipe portion of each of the two gas controller, said extension Projecting from the outer peripheral surface of the extension pipe part in a direction perpendicular to the extension direction of the output pipe part and perpendicular to the projecting direction of the operation shaft, and the contact parts of the two gas controllers Is provided with a flange portion opposed to each other when the gas pipe comes into contact with the gas pipe, and the flange portion of one gas controller and the flange portion of the other gas controller are connected by a connecting member.

  According to the present invention, the gas pipe is brought into contact with the abutment portion of the extension pipe portion provided in the body of each gas controller, and the convex portion is inserted into the hole portion of the gas pipe, thereby both gases. The controller and the gas pipe can be easily connected to each other, and the connecting portions between the gas controllers and the gas pipe are reliably maintained by connecting the flange portions facing each other with a connecting member. be able to. Thereby, both gas controllers and a gas pipe can be connected without connecting the conventional flow path member between both gas controllers and a gas pipe, and a number of parts can be reduced. In addition, since it is only necessary to connect both flange portions with a connecting member, the connection work is easy.

  Thus, according to the present invention, it is possible to connect one gas pipe and the gas controllers on both sides thereof without using a connecting flow path member, etc. It is possible to provide a gas pipe connection structure that can reduce costs by reducing the number of points.

  In the present invention, the connecting member is a pair of screw members having the same shape including a screw shaft portion and a head having a larger diameter than the screw shaft portion, and the flange portion is an extension of the extension pipe portion. A first flange portion and a second flange portion projecting in one direction intersecting the projecting direction and the other direction are formed, and the screw shaft portion of the screw member is screwed into the first flange portion. When a screw hole is provided, an insertion hole through which the screw shaft portion of the screw member can be inserted is provided in the second flange portion, and when the contact portions of both gas controllers are in contact with the gas pipe, The first flange portion of the gas controller and the second flange portion of the other gas controller face each other, and the second flange portion of one gas controller and the first flange portion of the other gas controller Are opposed to each other, and each screw member inserted through the insertion hole of each second flange portion is connected to each first flange. It may be screwed into the screw hole of the di portion.

  According to this, when the bodies of both gas controllers are formed in the same shape and connected to the gas pipe, only one gas controller is turned upside down with respect to the other gas controller. The first flange portion of the controller can be opposed to the second flange portion of the other gas controller. Therefore, the bodies of both gas controllers can be shared, and the manufacturing cost can be reduced.

The top view which shows embodiment of this invention. Sectional drawing which shows the connection state of a gas pipe and an extension pipe part. Explanatory drawing which shows the decomposition | disassembly state of FIG. The figure which shows the contact part of an extension pipe part.

  An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, a single gas pipe 1, a first gas controller 2, and a second gas controller 3 are provided inside the stove housing. The first gas controller 2 and the second gas controller 3 are disposed on both sides of the gas pipe 1 so as to sandwich the gas pipe 1.

  The first gas controller 2 and the second gas controller 3 have the same configuration, and both are configured by a body 4 and an operation mechanism 5 assembled to the body 4.

  The operation mechanism 5 includes an operation shaft 6. The operating shaft 6 is held by an operating shaft holding means 7 attached to the front end surface of the body 4 so as to be rotatable and reciprocally movable in the axial direction. The operating shaft holding means 7 includes a connecting plate 8 that is connected to a front wall plate 9 of the stove housing.

  The operation shaft 6 extends forward through a front panel 10 that covers the front wall plate 9 of the stove housing, and an operation knob (not shown) is attached so that the user can perform a rotation operation.

  The body 4 is a cast product, and includes a main body portion 11 including a gas flow path, an on-off valve, a heating power adjustment valve, and the like (not shown), and a gas delivery member 12 that sends fuel gas to a gas burner. An extension pipe portion 13 extending toward the gas pipe 1 is integrally formed with the main body portion 11. The gas delivery member 12 is attached to the opposite side of the extended pipe portion 13 in the main trunk portion 11. In addition, the positional relationship between the extension pipe portion 13 and the gas delivery member 12 is not limited to this. For example, the gas delivery member 12 may be attached to a position rotated by 90 ° with respect to the extension pipe part 13 with the main body part 11 as an axis.

  The gas pipe 1 is a metal gas supply pipe having a circular cross section, and its downstream side extends to an intermediate position between the first gas controller 2 and the second gas controller 3. The upstream end portion of the gas pipe 1 extends outward through the rear wall plate 14 of the stove housing, and is provided with a gas hose connection portion 15 for connecting a gas hose (not shown).

  A closing portion 16 that closes the gas pipe 1 is formed at the downstream end of the gas pipe 1. As shown in FIG. 1, the closing portion 16 may be formed by fitting a lid member 17 into the gas pipe 1, or although not shown, the downstream end of the gas pipe 1 is crushed and welded by caulking or the like. You may form by.

  And the extension pipe part 13 formed in the main trunk | drum 11 of the 1st gas controller 2 and the extension pipe part 13 formed in the main trunk | drum 11 of the 2nd gas controller 3 are the gas pipes 1 It is connected to the. This connection structure will be described in detail.

  As shown in FIG. 2 and FIG. 3, the extension pipe part 13 has a communication path 18 communicating with the gas flow path inside the main body part 11, and the distal end is formed on the peripheral wall of the gas pipe 1. A concave contact portion 19 that is curved correspondingly is formed, and a cylindrical convex portion 20 that communicates with the communication path 18 is formed. As shown in FIG. 4, the contact portion 19 is formed in a horizontally long shape, and the convex portion 20 is formed in the central portion of the contact portion 19, as shown in the tip portion of the extension pipe portion 13 of the first gas controller 2. . Further, an annular seal member 21 such as a rubber O-ring is attached to the convex portion 20.

  As shown in FIG. 3, a pair of hole portions 22 facing each other are formed in the peripheral wall of the gas pipe 1. The hole portion 22 is opened to a size that allows the convex portion 20 of the extended tube portion 13 to be inserted.

  As shown in FIGS. 2 and 3, a first flange portion 23 that extends in one direction intersecting the extending direction of the extending tube portion 13 is formed on the outer periphery of the distal end portion of the extending tube portion 13, and the extending portion A second flange portion 24 extending in the other direction intersecting the extending direction of the tube portion 13 is formed. The first flange portion 23 provided in the extension pipe portion 13 of the first gas controller 2 and the second flange portion 24 provided in the extension pipe portion 13 of the second gas controller 3 are both sides of the gas pipe 1. Facing each other. Similarly, the 2nd flange part 24 with which the extension pipe part 13 of the 1st gas controller 2 is provided, and the 1st flange part 23 with which the extension pipe part 13 of the 2nd gas controller 3 is provided are the gas pipe 1. Opposite to each other.

  Further, the first flange portion 23 is formed with a screw hole 25 having a thread formed on the inner peripheral surface, and the second flange portion 24 has a smooth inner peripheral surface (a thread is formed). The insertion hole 26 is not formed. And the 1st flange part 23 and the 2nd flange part 24 which mutually oppose are connected by the screw member 27 (connection member). The screw member 27 includes a screw shaft portion 27a having a thread formed on the outer peripheral surface, and a head portion 27b having a larger diameter than the screw shaft portion 27a, and is tightened from the second flange portion 24 side. That is, the first flange portion 23 and the second flange portion are formed by inserting the screw shaft portion 27a through the insertion hole 26 of the second flange portion 24 and screwing the screw shaft portion 27a into the screw hole 25 of the first flange portion 23. 24 is firmly connected.

  With the above configuration, the convex portion 20 is inserted into the hole portion 22 of the gas pipe 1 and the contact portion 19 is brought into contact with the gas pipe 1, whereby the gas pipe 1 and the communication path 18 of the extension pipe portion 13 are connected. It will be in the state connected via the convex part 20. FIG. Further, by connecting the first flange portion 23 and the second flange portion 24 facing each other in this state by the screw member 27, the connection state between the gas pipe 1 and the communication passage 18 of the extension pipe portion 13 is achieved. Maintained firmly. At this time, since the sealing member 21 is attached to the convex portion 20, sealing performance is ensured between the periphery of the hole 22 of the gas pipe 1 and the outer peripheral surface of the convex portion 20.

  By adopting the connection structure as described above, the first gas controller 2 and the second gas controller 3 can be connected to the gas pipe 1 with relatively simple work, and the structure is simple and the number of parts is also large. Since there are few, cost can be reduced reliably.

  In addition, a screw hole is provided in the 1st flange part 23 and the 2nd flange part 24 with which the extension pipe part 13 of the 1st gas controller 2 is provided, and the extension pipe part 13 of the 2nd gas controller 3 is provided. An insertion hole may be provided in the first flange portion 23 and the second flange portion 24 so as to be tightened by the screw member 27 from each flange side of the second gas controller 3.

  On the other hand, as in this embodiment, in both the first gas controller 2 and the second gas controller 3, a screw hole 25 is provided in the first flange portion 23, and an insertion hole 26 is provided in the second flange portion 24. And the bodies 4 of the first gas controller 2 and the second gas controller 3 may be formed in the same shape by tightening the screw members 27 in alternate directions from the second flange portion 24 side. This is advantageous because the manufacturing cost can be reduced.

  As another example, although not shown, insertion holes are provided in the first flange portion 23 and the second flange portion 24, and bolts and nuts are inserted through the insertion holes of both flanges 23 and 24. You may fasten. According to this, although the number of parts is increased by the nut, it is not necessary to turn a screw thread in the insertion hole of the first flange portion 23, the manufacturing man-hour can be reduced, and the body 4 is formed in the same shape. Can do.

  In this embodiment, the gas stove adopting the gas pipe connection structure of the present invention is shown in the gas stove. However, the present invention is not limited to this, and one gas pipe and its gas can be used even in other gas appliances. It can be suitably employed when connecting a pair of gas controllers arranged on both sides of the tube.

DESCRIPTION OF SYMBOLS 1 ... Gas pipe, 2 ... 1st gas controller (gas controller), 3 ... 2nd gas controller (gas controller), 4 ... Body, 13 ... Extension pipe part, 18 ... Communication path, 19 ... Contact part, 20 ... convex part, 21 ... sealing member, 22 ... hole part, 23 ... first flange part (flange part), 24 ... second flange part (flange part), 25 ... screw hole, 26 ... insertion Hole 27: Screw member (connection member), 27a ... Screw shaft portion, 27b ... Head.

Claims (2)

A gas pipe connection structure for connecting the gas pipe to a pair of gas controllers arranged on both sides of a single gas pipe,
The operating shafts protruding from the respective bodies of both gas controllers are oriented in the same direction, and the gas pipe extends in the same direction as the protruding directions of both operating shafts, and between the bodies of both gas controllers. Extended,
In each body of both gas controllers, an extension pipe portion having a communication path communicating with the gas flow path in the body and extending in a direction perpendicular to the protruding direction of the operation shaft toward the gas pipe is provided. Provided in one,
A contact portion having a shape corresponding to the peripheral wall of the gas pipe and abutting on the gas pipe via a seal member is provided at the tip of each of the extending pipe portions of both gas controllers, and the communication path Provided with a cylindrical convex portion communicating with
Provided with a pair of holes into which the convex portions are inserted when the abutting portions of both gas controllers abut on the opposing surface of the peripheral wall of the gas pipe
The extension pipe portions of both gas controllers have a direction perpendicular to the extension direction of the extension pipe portion and a direction perpendicular to the protruding direction of the operation shaft. Protruding from the outer peripheral surface and providing flange portions facing each other when the contact portions of both gas controllers contact the gas pipe ,
A gas pipe connection structure, wherein a flange portion of one gas controller and a flange portion of the other gas controller are connected by a connecting member. In the gas pipe connection structure according to claim 1,
The connecting member is a pair of screw members having the same shape including a screw shaft portion and a head having a larger diameter than the screw shaft portion,
The flange portion is composed of a first flange portion and a second flange portion projecting in one direction intersecting the extending direction of the extending pipe portion and the other direction,
A screw hole into which the screw shaft portion of the screw member is screwed is provided in the first flange portion,
The second flange portion is provided with an insertion hole through which a screw shaft portion of the screw member can be inserted,
When the contact portions of both gas controllers are in contact with the gas pipe, the first flange portion of one gas controller and the second flange portion of the other gas controller face each other, and one gas The second flange portion of the controller and the first flange portion of the other gas controller face each other, and each screw member inserted through the insertion hole of each second flange portion is connected to each first flange portion. A gas pipe connection structure characterized by being screwed into a screw hole.

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