JP4845150B2 - Pipe fitting - Google Patents

Description

  The present invention relates to a pipe connector for connecting a first tubular member connected to a gas device and a second tubular member connected to a gas supply source.

  For example, in order to connect fuel gas from a gas cylinder (or buried gas pipe) to a gas stove as a gas appliance, a gas pipe from the gas cylinder (or buried gas pipe) is connected to a stove side connection portion of the gas stove. A piping structure using a pipe joint with a gas stopper is disclosed (for example, see Patent Document 1). In this piping structure, a recessed portion for a pipe joint and a recessed portion for a gas pipe are provided in a part of the side wall of the gas stove, and the fitting with a gas stopper is accommodated in the recessed portion for the pipe joint. Part of it is housed. The gas stove is housed and installed in the upper space of the kitchen counter of the system kitchen, for example, and by accommodating a part of the gas pipe and the pipe fitting with a gas stopper in this way in the recessed part for the pipe joint and the recessed part for the pipe, A part of the gas piping, a fitting with a gas stopper, etc. do not protrude into the space below the kitchen counter (usually the storage space for storing cooking utensils is provided under the kitchen counter) This storage space can be widely used.

  However, in order to configure the gas stove in this way, the structure is greatly different from that of the conventional gas stove. Therefore, it is necessary to newly develop the gas stove itself, and there is a problem that the manufacturing cost increases.

For this reason, when a normal gas stove is used, a gas pipe from a gas cylinder (or a gas buried pipe) is connected to the gas stove by a pipe structure as shown in FIG. 7, for example . In FIG. 7A, an upper space is provided above the kitchen counter 4 of the system kitchen 2, and a gas stove 6 (built-in type) is accommodated and mounted in this upper space. At the bottom of the kitchen counter 4 is provided storage space 8, the storage space 8, for example, by the partition member 10 is partitioned into a lower housing space 14 above the upper storage space 12 and the lower side. A pair of opening / closing doors 16 is provided at the opening of the storage space 8 so as to be freely opened and closed.

  A gas pipe 18 from a gas cylinder or the like is disposed so as to extend forward in the storage space 8 (specifically, the upper storage space 12) of the kitchen counter 4. On the other hand, the stove side connection portion 22 of the gas stove 6 protrudes into the storage space 8 (upper storage space 12) through the opening of the decorative support plate 20 of the kitchen counter 4. When connecting the gas pipe 18 and the stove side connecting portion 22, as shown in FIG. 7B, the position adjustment connecting member 24 is connected to the stove side connecting portion 22. Next, as shown in FIG. 7 (c), the first connection portion 28 of the gas plug-attached pipe joint 26 is connected to the position adjusting connection member 24, and then the second connection portion 30 of the gas plug-attached pipe joint 26 is connected to the second connection portion 30. The gas pipe 18 is connected, and the gas pipe 18 and the stove side connection portion 22 are thus connected via the position adjusting connection member 24 and the gas plug-attached pipe joint 26.

JP 2007-298224 A

However, in such a piping structure, since the position adjustment connecting member 24 is connected to the stove side connecting portion 22 of the gas stove 6 and the pipe fitting 26 with a gas stopper is connected to the position adjusting connecting member 24 , this gas The fitting 26 with a stopper is positioned so as to largely protrude into the storage space 8 (upper storage space 12) of the kitchen counter 4, and the storage space 8 is largely occupied by the fitting 26 with a gas stopper, the gas pipe 18, and the like. There is a problem that the space that can be stored in the storage space is reduced.

  An object of the present invention is to provide a pipe connector that can be connected with a small occupied space as compared with the conventional case when connecting a gas pipe and a device side connecting portion using a storage space. .

The pipe connector according to claim 1 of the present invention is a pipe connector for connecting the first tubular member on the gas equipment side and the second tubular member on the gas supply source side,
A connector main body having a first connection portion and a second connection portion; a connection pipe member mounted on the first connection portion of the connection tool main body; and a tightening member fitted on the connection pipe member. A screw part is provided on the inner peripheral surface of the connection pipe member, and a screw part is provided on the outer peripheral surface of the first connection part, and the connection pipe member is provided on the first connection part. Attached so as to be movable in the axial direction and relatively rotatable, and the fastening member is attached to the connecting pipe member so as to be movable in the axial direction and to rotate integrally therewith. When the tightening member is rotated in the tightening direction, the tightening member and the connection tube member are integrally rotated so that the connection tube member is connected to the first tubular member, and the connector main body is tightened in the tightening direction. The tightening member moves in the axial direction while the screw of the first connecting portion moves. Part is characterized in that it is screwed into the threaded portion of the connecting pipe member.

  Moreover, in the pipe connector according to claim 2 of the present invention, in a state where the connection between the first connection part of the connection tool body and the connection pipe member is released, the screw part of the first connection part. And the threaded state of the threaded portion of the connecting tube member is released, and relative rotation of the connecting tube member with respect to the first connecting portion is allowed.

Furthermore, in the pipe connector according to claim 3 of the present invention, the connector body is a valve housing body incorporating an on-off valve for opening and closing the gas flow path or a connection pipe body defining the gas flow path. The first connection portion and the second connection portion of the connector main body are arranged in a vertical positional relationship.

According to the pipe connector of the first aspect of the present invention, the connection pipe member is attached to the first connection portion of the connector body so as to be movable in the axial direction and relatively rotatable, and is a tightening member. Is attached to the connecting pipe member so as to be movable in the axial direction and integrally rotated therewith, when the fastening member is rotated in the fastening direction, the fastening member and the connecting pipe member are The connecting pipe member is connected to the first tubular member on the gas equipment side by rotating integrally, and when the connector main body is further rotated in the tightening direction in this connected state, the tightening member moves in the axial direction. The threaded portion of the first connecting portion is screwed to the threaded portion of the connecting pipe member, and in this way, the first connecting portion of the connector main body is connected to the first tubular member on the gas equipment side via the connecting tube member. be able to. And since this connection is performed while the tightening member moves in the axial direction toward the first tubular member, in the connected state, the tightening member is housed on the first tubular member side, and for example, The amount of projection of the fastening member into the storage space is reduced, and the occupied space of the fastening member, the connector main body, the second tubular member, etc. can be reduced as compared with the conventional case, and the effective space of the storage space is increased. can do.

  Moreover, according to the pipe connector according to claim 2 of the present invention, in a state where the connection between the first connection part of the connection tool body and the connection pipe member is released, the screw part of the first connection part and the connection pipe Since the screwed state of the threaded portion of the member is released, relative rotation of the connecting tube member with respect to the first connecting portion is allowed, and thus the connecting tube member is moved to the first by rotating the tightening member. It can be easily connected to the tubular member.

  Further, according to the pipe connector according to claim 3 of the present invention, the first tubular member on the gas equipment side and the second on the gas supply source side are provided via the valve housing body or the connection pipe body as the connector body. The tubular member can be connected as required.

  Hereinafter, with reference to FIGS. 1-6, one Embodiment of the pipe connector according to this invention is described. 1 is a perspective view showing a pipe connector according to an embodiment, FIG. 2 is a cross-sectional view showing the pipe connector of FIG. 1, and FIG. 3 shows the pipe connector of FIG. FIG. 4 is a sectional view showing a state before connecting the connecting pipe member of the pipe connector of FIG. 1 to the connecting part on the gas stove side, and FIG. It is sectional drawing which shows the state which connected the 1st connection part of the pipe connector of FIG. 1 to the connection pipe member.

  1 and 2, the illustrated pipe connector 52 has a built-in on-off valve, and includes a valve housing main body 54 as a main body of the connection tool. Two connecting portions 58 are integrally provided. The first connection portion 56 extends upward from the valve housing body 54 in FIG. 2, and the second connection portion 58 extends from the valve housing body 54 to the right in FIG. 2, and the first connection portion 56 and the second connection portion The parts 58 are arranged in a substantially vertical positional relationship. As will be described later, the first connecting portion 56 is connected to a stove-side connecting portion 62 (which constitutes a first tubular member) of a gas stove 60 (for example, a built-in type) serving as a gas device, and a second As will be described later, the connecting portion 58 is connected to a gas cylinder as a gas supply source and a gas pipe 64 on the buried pipe side (which constitutes the second tubular member).

  A gas flow channel 66 is provided in the valve housing body 54 in a substantially L shape, and one end side (first flow channel portion 68) of the gas flow channel 66 is provided through the first connection portion 56, and the other end. The side (second flow path portion 70) is provided through the second connection portion 58. An opening / closing valve 72 is disposed at a connection portion between the first passage portion 68 and the second passage portion 70 of the gas passage 66, and the opening / closing valve 72 is connected to an operation member 76 via an operation shaft 74. Yes. Accordingly, when the operation member 76 is opened, the on-off valve 72 is opened via the operation shaft 74, the first flow path portion 68 and the second flow path portion 70 are communicated, and the operation member 76 is closed. Then, the on-off valve 72 is closed via the operation shaft 74, and the communication state between the first flow path portion 68 and the second flow path portion 70 is blocked.

  A male screw portion 73 as a screw portion is provided on the outer peripheral surface of the distal end portion of the first connection portion 56 of the valve housing main body 54. Further, a female screw portion 75 as a screw portion is provided on the inner peripheral surface of the second connection portion 58 (the inner peripheral surface defining the second flow path portion 70).

  A connection pipe member 78 is attached to the first connection portion 56 of the valve housing body 54, and a tightening member 80 is attached by fitting the connection pipe member 78. The outer peripheral surface of the connecting pipe member 78 is formed in a regular hexagonal shape, and the inner peripheral surface thereof is formed in a circular shape. A male screw portion 82 as a screw portion is provided on the outer peripheral surface of one end portion of the connecting pipe member 78, and a mark 84 is provided on the outer peripheral surface of the other end portion. Further, a female threaded portion 86 as a threaded portion is provided on the inner peripheral surface on one end side of the connecting pipe member 78, and the female threaded portion 86 is connected to the male threaded portion 73 of the first connecting portion 56 of the valve housing body 54 as described later. An annular locking flange 88 projecting radially inward is provided on the inner peripheral surface of the other end.

  The tightening member 78 is composed of a sleeve-shaped member, and the shape of the inner peripheral surface thereof is formed in a regular hexagonal shape corresponding to the outer peripheral surface shape of the connecting pipe member 78. Corresponding to the surface shape, it is formed in a regular hexagonal shape.

  Since it is configured in this way, as can be understood from FIG. 2, the connecting pipe member 78 is rotatable relative to the first connecting portion 56 to the first connecting portion 56 of the valve housing body 54. And mounted so as to be movable in the axial direction (vertical direction in FIG. 2). The tightening member 80 is mounted on the connecting pipe member 78 so as to be movable in the axial direction with respect to the connecting pipe member 78 and so as to rotate integrally with the connecting pipe member 78. It can move in the axial direction between a position where it abuts (position shown in FIG. 2) and a position where it abuts on the male thread portion 82 of the connecting pipe member 78.

  Further, in this embodiment, when the valve housing body 54 is loosened with respect to the connecting pipe member 78 and moved downward in FIG. 2, as shown in FIG. 2, one end of the tightening member 80 (FIG. 2). The upper end of the connecting pipe member 78 is located at a mark 84, and the mark 84 is exposed to the outside from one end of the tightening member 80, whereby the valve housing main body 54 is in the most loosened state. I can know. In this most loosened state, the locking ring 90 attached to the outer peripheral surface of the first connection portion 56 of the valve housing body 54 is locked to the locking flange 88 of the connection pipe member 78, and Thus, the valve housing body 54 is prevented from moving further downward in FIG. 2 beyond this position, and the valve housing body 54 is prevented from being detached from the connecting pipe member 78. Further, in this state, the screwed state between the female threaded portion 86 of the connecting pipe member 78 and the male threaded portion 73 of the first connecting portion 56 of the valve housing main body 54 is released, and the first connecting portion 56 for the connecting pipe member 78 is released. Free relative rotation is allowed. In this embodiment, a pair of seal rings 92 are provided on the outer peripheral surface of the first connection portion 56 in order to prevent leakage of fuel gas from between the first connection portion 56 and the connection pipe member 78. Yes.

  In such a pipe connector 52, the first connecting portion 56 side of the valve housing body 54 is connected to the gas stove 60, and the second connecting portion 58 is connected to the gas supply source side. A stove-side connecting portion 60 (first annular member) is provided at the bottom of the gas stove 60, and a female screw portion 94 as a screw portion is provided on the inner peripheral surface of the stove-side connecting portion 60. The male screw portion 82 is screwed to the female screw portion 94 of the stove side connection portion 60 as described later. Further, a male screw part 96 is provided at the tip of a gas pipe 64 (second annular member) connected to a gas cylinder (not shown) as a gas supply source, and the male screw part 96 of the gas pipe 64 is a valve housing. As will be described later, it is screwed into the female screw portion 75 of the second connection portion 58 of the main body 54.

Next, referring to FIGS. 3 to 5 together with FIG. 2, a pipe connection operation using the pipe connector 52 described above will be described. Referring to FIG. 3, for example, the kitchen counter is provided with an upper space 102, and the gas stove 60 is accommodated and mounted in the upper space 102, and in such a mounted state, the support legs 104 (FIG. 3) of the gas stove 60. Are shown on the decorative support plate 106 of the kitchen counter. In order to connect the stove-side connecting portion 62 of the gas stove 60 attached to the kitchen counter and the gas pipe 64 on the gas supply source side in this way, first, the connecting pipe member 78 of the pipe connector 52 is connected to the stove-side connecting portion 62. Connecting. In this connection, the distal end portion of the connection pipe member 78 is screwed into the stove side connection portion 62 through the connection opening 108 of the decorative support plate 106, and a tightening tool (not shown) is engaged with the tightening member 80 to tighten the direction. The connecting pipe member 78 is rotated together with the tightening member 80 in the tightening direction, and the male screw portion 82 is screwed to the female screw portion 94 of the stove side connecting portion 62. In this way, the connecting pipe member 78 is detachably connected to the stove side connecting portion 62 . At this time, the connecting pipe member 78 and the tightening member 80 are rotated in the tightening direction with respect to the valve housing main body 54.

  Next, in the state shown in FIG. 4, the valve housing body 54 is rotated in the tightening direction with respect to the connection pipe member 78 and the tightening member 80. As a result, the male threaded portion 73 of the first connecting portion 56 of the valve housing body 54 is screwed to the female threaded portion 86 of the connecting tube member 78, and the first connecting portion 56 of the valve housing body 54 is thus connected to the connecting tube member 78. The first connection portion 56 of the valve housing body 54 is connected to the stove side connection portion 62 via the connection pipe member 78. At this time, since the tightening member 80 is movable in the axial direction with respect to the connecting pipe member 78, the valve housing main body 54 is rotated in the tightening direction (in other words, connected to the male threaded portion 73 of the first connecting portion 56). As the screwing of the pipe member 78 with the female threaded portion 86 proceeds), the tightening member 80 moves upward in FIG. 4 to the stove side connecting portion 62 side, whereby the male threaded portion 73 of the first connecting portion 56 and the connecting pipe The above-described screw connection with the female thread portion 86 of the member 78 is allowed.

  In such a connected state, the tightening member 80 moves in the axial direction toward the stove-side connecting portion 62, and the upper portion thereof is accommodated in the connecting opening 108 of the decorative support plate 106 and above, so that FIG. 4 and FIG. As can be easily understood by comparing with 5, the amount of protrusion of the valve housing body 54 into the lower space 110 of the kitchen counter can be kept small, and the space occupied by the lower space 110 can be reduced.

  Thereafter, as understood from FIG. 5, the gas pipe 64 is connected to the second connection portion 58 of the valve housing main body 54. For this connection, the male screw portion 96 of the gas pipe 64 is screwed into the female screw portion 75 of the second connection portion 58 of the valve housing main body 54, and the gas pipe 64 is rotated in the tightening direction. The gas pipe 64 on the gas supply source side can be connected to the stove side connection portion 62 of the gas stove 60 through the pipe connector 52 as required. And in such a connection state, since the pipe connector 52 is accommodated in the upper part of the lower space 110 of the kitchen counter as compared with the conventional case, the gas pipe 64 is also located in the upper part of the lower space 110, As a result, the space occupied by the pipe connector 52 and the gas pipe 64 can be kept small.

Next, another embodiment of the pipe connector will be described with reference to FIG. In FIG. 6, members that are substantially the same as those in the above-described embodiment are given the same reference numerals, and descriptions thereof are omitted.
In the connecting pipe 52A of the other embodiment, the connecting tool main body is constituted by a connecting pipe main body 124 that defines the gas flow path 122. The connecting pipe main body 124 is substantially L-shaped, and is provided with a first connecting portion 56A extending upward in FIG. 6 on one side and a second connecting portion 58A extending rightward in FIG. 6 on the other end side. ing. A male screw portion 73 as a screw portion is provided on the outer peripheral surface of the tip portion of the first connection portion 56A, and a male screw portion 126 as a screw portion is provided on the outer peripheral surface of the tip portion of the second connection portion 58A. Other configurations in the other embodiments are substantially the same as those in the above-described embodiment, and even if such a pipe connector 52A is used, the space occupied by the pipe connector 52A accompanying the connection is the same as described above. Can be kept small.

  As mentioned above, although one Embodiment of the pipe connector according to this invention was described, this invention is not limited to this Embodiment, A various change thru | or correction | amendment are possible without deviating from the scope of the present invention.

In the above-described embodiment, the pipe connector is described as applied to the connection of the gas stove. However, the present invention is not limited to this and can be widely applied to the connection of other gas devices.
In the above-described embodiment, the first connection portion and the second connection portion of the connector main body are arranged in a vertical positional relationship, but the present invention is not limited to such a configuration, and the first connection portion and the second connection portion are not limited thereto. It can also comprise so that a connection part may be arrange | positioned in a straight line form.

The perspective view which shows the pipe connector of one Embodiment. Sectional drawing which shows the pipe connector of FIG. Sectional drawing which shows the state before connecting the pipe connector of FIG. 1 to the connection part by the side of the stove of a gas stove. Sectional drawing which shows the state which connected the connection pipe member of the pipe connector of FIG. 1 to the connection part by the side of a gas stove. Sectional drawing which shows the state which connected the 1st connection part of the pipe connector of FIG. 1 to the connection pipe member. Sectional drawing which shows the pipe connector of other embodiment. Explanatory drawing for demonstrating the connection style in the conventional piping structure.

Explanation of symbols

52, 52A Pipe connector 54 Valve housing body 56, 56A First connection part 58, 58A Second connection part 60 Gas stove 62 Stove side connection part 64 Gas pipe 78 Connection pipe member 80 Tightening member 124 Connection pipe body

Claims (3)

A pipe connector for connecting the first tubular member on the gas equipment side and the second tubular member on the gas supply source side,
A connector main body having a first connection portion and a second connection portion; a connection pipe member mounted on the first connection portion of the connection tool main body; and a tightening member fitted on the connection pipe member. A screw part is provided on the inner peripheral surface of the connection pipe member, and a screw part is provided on the outer peripheral surface of the first connection part, and the connection pipe member is provided on the first connection part. Attached so as to be movable in the axial direction and relatively rotatable, and the fastening member is attached to the connecting pipe member so as to be movable in the axial direction and to rotate integrally therewith. When the tightening member is rotated in the tightening direction, the tightening member and the connection tube member are integrally rotated so that the connection tube member is connected to the first tubular member, and the connector main body is tightened in the tightening direction. The tightening member moves in the axial direction while the screw of the first connecting portion moves. Pipe fitting, characterized in that the section is screwed to the threaded portion of the connecting pipe member. In a state where the connection between the first connection portion of the connector main body and the connection pipe member is released, the screwed state of the screw portion of the first connection portion and the screw portion of the connection pipe member is released. The pipe connector according to claim 1, wherein relative rotation of the connecting pipe member with respect to the first connecting portion is allowed. The connector main body is a valve housing main body incorporating an on-off valve for opening and closing a gas flow path or a connection pipe main body defining a gas flow path, and the first connection portion and the second connection of the connection tool main body. The pipe connector according to claim 1 or 2, characterized in that the parts are arranged in a vertical positional relationship.

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