JP4486734B2 - Gas equipment having a gas pipe connection - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas apparatus having a tubular gas pipe connecting portion to which a gas pipe is connected.
In the present invention, the gas equipment is not only a normal gas equipment for burning gas such as a gas stove and gas stove, but also a gas plug, a gas pipe connection socket for connecting a gas pipe to a plug of the gas equipment, etc. Including gas equipment for non-gas combustion.
[0002]
[Prior art]
First, in order to clarify the object of the present invention, a gas device having a gas pipe connection part which is a problem in the present invention will be described first. A socket is one of such gas devices. The socket is used when a gas pipe is connected to a gas appliance such as a gas stove, and has a socket body (device main body) having a cylindrical shape. A plug mounting portion is provided at the front end of the socket body, and a gas pipe connecting portion is provided at the rear end. And while connecting a gas pipe to a gas pipe connection part, a gas pipe is connected to a gas apparatus by connecting the plug of gas equipment to a plug mounting part.
[0003]
By the way, the socket has a type in which the axis of the gas pipe connection portion coincides with the axis of the socket body (hereinafter referred to as an I-type socket), and the gas pipe connection portion is bent at an intermediate portion thereof, and the tip portion thereof. There are two types, one that intersects the axis of the socket with the axis of the socket body (hereinafter referred to as L-type socket). These two types of sockets are selectively used according to the installation location of the gas appliance. For example, when there is a gas outlet in front of the plug part of the gas appliance, the gas outlet and the plug are arranged in a straight line. Therefore, in such a case, an I-type socket is used. On the contrary, when there is no gas outlet in front of the plug and the gas pipe is arranged along the wall, the gas pipe arranged along the wall is connected to the gas appliance without bending. An L-shaped socket is used so that it can.
[0004]
[Problems to be solved by the invention]
However, using two types of sockets is disadvantageous in terms of manufacturing cost and management cost. Further, each time the installation location of the gas appliance is changed, there is a problem that the socket has to be changed and it takes time for replacement.
[0005]
[Means for Solving the Problems]
In order to solve the above problems , the present invention provides a gas appliance provided with a tubular gas pipe connecting portion to which a gas pipe is connected to a rear end portion of the device main body. so that it is possible to change the angle between the apparatus body, with bending the middle portion of the gas pipe connection portion, the bending angle of the gas pipe connecting portion with respect to the apparatus main body proximal end of the gas pipe connecting portion omission when is fitted rotatably about the same angle by the rear end inner peripheral surface of the apparatus body in a state of being inclined by a spring pin which engages the gas pipe connecting portion on one side of the base end portion The one side portion to which the spring pin is engaged is positioned on the rear end side in the front-rear direction of the device body from the other side portion located on the circumference including the one side portion of the base end portion. The spring pin and the axis of the device body Is characterized in that arranged so that difference.
In this case, it is desirable that the device main body has a cylindrical shape, and the base end portion of the gas pipe connection portion is inclined with respect to the axis of the device main body.
A joint member having a through hole bent at an angle substantially the same as the bending angle of the gas pipe connecting portion is formed on the inner peripheral surface of the rear end portion of the device main body, and the axis of one end portion on the device main body side of the through hole is connected to the device. The fitting is made to be aligned with the axis of the main body, the base end of the gas pipe connecting portion is rotatably fitted to the other end of the through hole of the joint member, and the gas pipe connecting portion is connected to the joint. It is desirable to prevent the member from coming off with the spring pin.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a quick joint will be described with reference to FIGS.
1 to 3 show a socket 1 developed in a stage before the present invention is made. The invention will be made clearer by explaining the socket 1. The socket 1 has a cylindrical main body (device main body) 2. The main body 2 includes an inner cylinder 3 and an outer cylinder fitted and fixed to the outer periphery of the inner cylinder 3. A plug mounting portion 5 to which a plastic joint P of the quick joint is connected is provided at the front end portion (lower end portion in the figure) of the main body 2, and a gas pipe connecting portion 6 is a joint member at the rear end portion (upper end portion in the figure). 7 is rotatably provided.
[0007]
The plug mounting portion 5 is the same as a well-known one, and will be briefly described. Between the tip portions of the inner tube 3 and the outer tube 4, the operation tube 51 projects the tip portion from the outer tube 4. In the state, it is provided so as to be movable within a predetermined range in the axial direction of the main body 2, and an engagement cylinder 52 is provided on the inner peripheral surface of the inner cylinder 3 so as to be movable within a predetermined range in the axial direction of the main body 2. As shown in FIG. 1, when the plug P is not connected to the socket 1, the operation cylinder 51 is urged toward the distal end side of the main body 1 by the spring 53 and hits the sphere 4 provided on the inner cylinder 3. The spherical body 54 is pushed inwardly at the initial position. The engagement cylinder 52 is positioned at a predetermined initial position by the urging force of the spring 55 and prevents the sphere 54 from moving inward.
[0008]
When the plug P is inserted into the inner cylinder 3, the engagement cylinder 52 is moved to the rear end side by the front end surface. After the engagement cylinder 52 moves rearward from the sphere 54, when the plug P is further inserted and the annular groove Pa is opposed to the sphere 54, the operation cylinder 51 moves the sphere 54 inward to engage the annular groove Pa. Combine. The operating cylinder 51 advances to a predetermined mounting position after engaging the sphere 54 with the annular groove Pa. In the mounting position, the sphere 54 is prevented from moving outward and detaching from the annular groove Pa. Thereby, the spherical body 54 is maintained in a state of being fitted in the annular groove Pa, and the socket 1 and the plug P are connected.
[0009]
In a state where the plug P is connected to the socket 1, when the operation cylinder 51 is moved backward to the initial position or slightly to the rear end side, the sphere 54 can be moved outward and can be detached from the annular groove Pa. . Accordingly, the plug P can be pulled out from the socket 1. When the plug P is pulled out from the socket 1, the engagement cylinder 52 moves forward and moves the sphere 54 outward. When the engagement cylinder 52 moves to the initial position, the sphere 54 cannot move inward. Thereafter, when the hand is released from the operation tube 51, the operation tube 51 returns to the initial position of pushing the sphere 54 inward.
[0010]
The joint member 7 is fitted and fixed to the inner peripheral surface of the rear end portion of the inner cylinder 3. A through hole 71 is formed in the joint member 7. The through hole 71 is bent at the intermediate portion. The bending angle of the through hole 71, that is, the angle θ formed between the base end portion 72 and the distal end portion 73 of the through hole 71 is 35 ° in this embodiment, but is usually in the range of 0 ° <θ ≦ 45 °. Determined. In this case, if it is desired to largely change the angle formed between the distal end 62 of the gas pipe connecting portion 6 and the axis of the main body 2, a large angle is selected as the angle θ. Is selected.
Reference numeral S <b> 1 is an O-ring for hermetically sealing between the inner peripheral surface of the inner cylinder 3 and the outer peripheral surface of the joint member 7.
[0011]
The base end portion 72 of the through hole 71 is slightly eccentric with respect to the main body 2 (inner cylinder 3) and is disposed in parallel. That is, the axis L2 of the base end portion 72 is decentered and parallel to the axis L1 of the main body 2 by the amount of eccentricity ε1. On the other hand, the tip 73 of the through hole 71 is inclined with respect to the axes L1 and L2 by the bending angle θ of the through hole 71. And the front-end | tip part 73 is extended in the direction which goes to the axis line L1 side of the inner cylinder 3 from the axis line L2 side of the base end part 72. As shown in FIG.
[0012]
The gas pipe connecting portion 6 is formed of a tubular body and is bent at an intermediate portion thereof. This bending angle, that is, the angle formed by the base end portion 61 and the distal end portion 62 of the gas pipe connecting portion 6 is set to the same angle as the bending angle θ of the through hole 71. The base end portion 61 of the gas pipe connecting portion 6 is rotatably fitted to the distal end portion 73 of the through hole 71 and is prevented from being detached by the retaining ring 8. Reference numeral S <b> 2 is an O-ring for hermetically sealing between the inner peripheral surface of the distal end portion 73 of the through hole 71 and the outer peripheral surface of the base end portion 61 of the gas pipe connection portion 6.
[0013]
In the socket 1 having the above-described configuration, the angle formed between the proximal end portion 61 and the distal end portion 62 of the gas pipe connection portion 6 is the same as the inclination angle between the distal end portion 72 of the through hole 71 and the axis L1. As shown in FIG. 5, the tip 62 of the gas pipe connection 6 can be made parallel to the axis L1 of the main body 2 by rotating the gas pipe connection 6 to an appropriate position. In this state, the socket 1 can be used as an I-type socket.
[0014]
When the gas pipe connection part 6 is rotated 180 ° in a state where the tip part 62 of the gas pipe connection part 6 is parallel to the axis L1, as shown by an imaginary line in FIG. 1 or a solid line in FIG. The tip 62 is inclined by 2θ with respect to the axis L1 and faces sideways. In this case, since the angle θ is 35 °, the tip end portion 62 faces to the side by 70 ° with respect to the axis L1. In this way, the socket 1 can be used as an L-shaped socket by directing the distal end portion 62 to the side with respect to the axis L1.
[0015]
In a state in which the distal end portion 62 is parallel to the axis L1, the proximal end portion 61 of the gas pipe connecting portion 6 is inclined with respect to the axis L1, so that the distal end portion 62 is eccentric with respect to the axis L1. When the amount of eccentricity is ε2, the amount of eccentricity ε2 is such that the base end portion 61 is eccentric by the amount of eccentricity ε1 with respect to the axis L1, and the distal end portion 73 of the through hole 71 is the axis L1 from the axis L2 side of the base end portion 72. Since it extends toward the side, it can be made smaller by the amount of eccentricity ε1 between the axes L1 and L2 than in the case where it is not configured as such. That is, if the amount of eccentricity ε1 between the axis lines L1 and L2 is increased, the amount of eccentricity ε2 can be reduced accordingly. If the strength (thickness) of the inner cylinder 3 and the joint member 7 is ignored, the eccentric amount ε2 can be made zero by increasing the eccentric amount ε1, and the axis of the tip 62 can coincide with the axis L1 of the main body 2. Is possible.
[0016]
By the way, in the socket 1, the gas pipe connecting portion 6 is prevented from coming off by the retaining ring 8, but when retaining by the retaining ring, the retaining ring 8 is fitted to the gas pipe connecting portion 6. Therefore, both of them must be inserted into the inner periphery of the joint member 7, which is very difficult to insert. For this reason, the mounting efficiency of the gas pipe connecting portion 6 has been reduced.
[0017]
Therefore, in the socket 1 ′ of the present invention, as shown in FIG. 4, the gas pipe connection portion 6 is prevented from coming off by a spring pin 9. As is well known, the spring pin 9 has a cylindrical shape that can be expanded and contracted, and is fitted and fixed to an insertion hole 74 that penetrates one side of the joint member 7. A part of the spring pin 9 protrudes from the insertion hole 74 into the distal end portion 73 of the through hole 71. A part of the protrusion is engaged with an engaging recess 63 formed on the outer peripheral surface of the proximal end portion of the gas pipe connecting portion 6. Thereby, the gas pipe connection part 6 is prevented from coming off from the joint member 7.
[0018]
The spring pin 9 is engaged with a portion located on the rearmost side in the axis L1 direction of the main body 2 in the entire circumference of the annular engaging recess 63. Moreover, the spring pin 9 is arranged so that a part thereof intersects the axis L2, and is engaged with the engagement recess 53 at the intersection of the engagement recess 63 and the axis L2.
[0019]
The base end portion 72 of the through hole 71 is formed such that its axis L2 coincides with the axis L1 of the main body 2. Further, the through hole 71 and the gas pipe connecting portion 6 are bent by 45 °. Therefore, the angle formed by the distal end portion 62 of the gas pipe connecting portion 6 and the axis L1 can be changed to an arbitrary angle in the range of 0 ° to 90 °. Other configurations are the same as those of the socket 1 according to the previous development.
[0020]
In the socket 1 ′ having the above-described configuration, when the spring pin 9 is inserted into the insertion hole 74 after the proximal end portion 61 of the gas pipe connection portion 6 is inserted into the distal end portion 73 of the through hole 71, the spring pin 9 is engaged with the engagement recess. 63 is engaged, and the gas pipe connecting portion 6 is prevented from coming off from the joint member 7. In this case, the gas pipe connecting portion 6 and the spring pin 9 are simply inserted into the through hole 71 and the insertion hole 74, respectively. Therefore, the attachment efficiency of the gas pipe connection part 6 can be improved.
[0021]
Moreover, when the gas pipe connection part 6 is pulled to the rear side of the main body 2 through the gas pipe, the base end part 61 of the gas pipe connection part 6 is located on the rear side of the main body 2 in the outer peripheral surface. The portion (the side portion on the rear side) is in press contact with the inner peripheral surface of the tip portion 73 of the through hole 71. And since the spring pin 9 is engaged with the gas pipe connection part 6 in the one side part which the gas pipe connection part 6 press-contacts, the spring pin 9 prevents the gas pipe connection part 6 from coming out of the joint member 7. Make sure to prevent it.
[0022]
The joint member 7 abuts the annular locking projection 75 formed on the outer peripheral surface on the base end side against the annular locking surface 31 formed on the inner peripheral surface on the rear end side of the inner cylinder 3. Even if a large tensile force acts on the joint member 7, the tensile force acts substantially uniformly over the entire circumference of the locking projection 75, the locking surface 31, and the contact surface. If so, the joint member 7 will not come out of the inner cylinder 3. However, when a large tensile force acts on a part of the locking projection 75 and the locking surface 31, the locking projection 75 gets over the locking surface 31 from a part of the locking projection 75 and the coupling member 7 comes out of the inner cylinder 3. There is a fear.
[0023]
In this respect, in this socket 1 ′, when a pulling force toward the rear side of the main body 2 acts on the gas pipe connection portion 6, the pulling force acts on the joint member 7 via the spring pin 9, but the axis L 2 Since the spring pin 9 is engaged with the engagement recess 63 at a portion intersecting with the engagement recess 63, the tensile force transmitted from the gas pipe connection portion 6 to the joint member 7 via the spring pin 9 is 7 is transmitted almost uniformly. Therefore, the joint member 7 can be prevented from coming out of the inner cylinder 3.
[0024]
In addition, this invention is not limited to said embodiment, It can change suitably.
For example, in the above embodiment, the present invention is applied to the sockets 1 and 1 'of the quick coupling, but the present invention is also applicable to gas combustion equipment such as a gas stove and a gas stove. For example, when the present invention is applied to a gas stove having a gas pipe connection portion on the back surface portion or side surface portion, the front end portion of the gas pipe connection portion is perpendicular to the back surface portion or side surface portion which is the mounting surface portion. , Can be directed in any direction between them. From the viewpoint of the direction of the distal end portion of the gas pipe connection portion with respect to such an attachment surface portion, in the socket 1 of the above embodiment, when used as an I-type socket, the distal end portion 62 of the gas pipe connection portion 6 is attached. It faces in the direction perpendicular to the rear end surface 2a of the main body 2 as the surface portion, and when used as an L-shaped socket, it faces in the direction along the rear end surface 2a.
Further, in the above embodiment, the gas pipe connecting portion 6 is provided rotatably on the main body 2 (inner cylinder 3) via the joint member 7, but may be provided directly on the main body 2. However, when the gas pipe connecting portion 6 is directly provided on the inner cylinder 3, the rear end portion of the inner cylinder 3 must be inclined with respect to the axis L1, so that the difficulty in manufacturing the entire main body 1 increases. . Therefore, it is desirable to provide the gas pipe connecting portion 6 on the main body 2 via the joint member 7.
[0025]
【The invention's effect】
As described above, according to the present invention, the distal end portion of the gas pipe connection portion can be directed in different directions with respect to the device main body. Therefore, it is not necessary to manufacture gas devices having different gas pipe connection portions, respectively, and it is possible to reduce the manufacturing costs and management costs of the gas devices, and it is possible to save the effort required for replacing the gas pipe connection portions. . Moreover, the effect that the attachment with respect to the main body of a gas pipe connection part can be performed easily is acquired.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a socket developed in a stage before the present invention is made, in which the tip of a gas pipe connecting portion is parallel to the axis of the main body and the plug is removed. Shown in state.
FIG. 2 is a cross-sectional view showing the socket with a plug connected thereto.
FIG. 3 is a front view of the socket, showing a state in which a distal end portion of a gas pipe connection portion is oriented in a direction crossing an axis of the main body.
FIG. 4 is a cross-sectional view showing a part of another embodiment of the present invention in which a gas pipe connecting portion is orthogonal to the axis of the main body.
[Explanation of symbols]
L1 Axis of main body L2 Axis P of base end (one end) of through-hole Plug 1 Socket (gas appliance)
1 'socket (gas equipment)
2 Body (equipment body)
DESCRIPTION OF SYMBOLS 5 Plug mounting part 6 Gas pipe connection part 61 Base end part 62 of gas pipe connection part Tip part 7 of gas pipe connection part Joint member 71 Through hole 72 Base end part 73 of through hole Spring pin 9

Claims (3)

In a gas appliance provided with a tubular gas pipe connection portion to which a gas pipe is connected to the rear end portion of the device main body, the angle formed by the tip portion of the gas pipe connection portion and the device main body can be changed. , with bending the intermediate portion of the gas pipe connecting portion, the apparatus main body in a state where the base end portion of the gas pipe connecting portion is inclined by approximately the same angle as the bending angle of the gas pipe connecting portion with respect to the apparatus body The gas pipe connecting portion is rotatably fitted to the inner peripheral surface of the rear end portion, and the gas pipe connecting portion is prevented from coming off by a spring pin engaged with one side portion of the base end portion, and the one side where the spring pin is engaged The portion is positioned on the rear end side in the front-rear direction of the device main body from the other side portion located on the circumference including the one side portion of the base end portion, and the spring pin intersects the axis of the device main body. characterized by being arranged such that Scan equipment.   2. The gas pipe connection portion according to claim 1, wherein the device main body has a cylindrical shape, and a proximal end portion of the gas pipe connection portion is inclined with respect to an axis of the device main body. Gas equipment to have.   A joint member having a through hole bent at an angle substantially the same as the bending angle of the gas pipe connecting portion is formed on the inner peripheral surface of the rear end portion of the device main body, and the axis of one end portion on the device main body side of the through hole is connected to the device. The fitting is made to be aligned with the axis of the main body, the base end of the gas pipe connecting portion is rotatably fitted to the other end of the through hole of the joint member, and the gas pipe connecting portion is connected to the joint. The gas apparatus having a gas pipe connection part according to claim 2, wherein the member is prevented from being detached by the spring pin.

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