JP2006328793A - Piping structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping structure capable of setting a projected amount from a connecting metal fitting put on a wall plate and the wall plate of a connecting pipe to a constant value even if the thickness of the wall plate on which the faucet is installed is different in each construction site. <P>SOLUTION: The connecting metal fitting 20 connecting a water supply pipe thereto and the connecting pipe 30 connecting the faucet 60 thereto are respectively arranged to the back side and the front side to the wall plate1, in the piping structure inserted into a wall hole 2 perforated in the wall plate 1 to connect the connecting metal fitting 20 and the connecting pipe 30, a cylindrical body 31 equipped with a watercourse 32 passing fluid therethrough in either the connecting metal fitting 20 or the connecting pipe 30 is formed, the cylindrical body 31 is formed by having a large diameter section 33 forming a male screw section 34 in the outer circumferential surface and a small diameter section 35 putting a sealing material 37 on the outer circumferential surface at a diameter smaller than the large diameter section 33 in the longitudinal direction, a watercourse 42 passing fluid therethrough is formed in the other one, and a female screw section 27 screwing to the male screw section 34 and an insertion fitting section 28 inserting and fitting the small diameter section 35 therein are formed in the inner circumferential surface of a watercourse 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, in a bathroom, a wash basin, a sink, etc., a connection fitting arranged on the back side of a wall plate and a connecting pipe arranged on the front side of the wall plate are inserted through a wall hole drilled in the wall plate. It relates to the piping structure to be connected.

  Conventionally, in a bathroom, for example, a counter is provided along a wall surface, and a fitting for connecting hot water or a pipe for supplying water to a wall plate standing on the front surface of the counter and a faucet are provided. The connecting pipe to be connected is fixed. There exists patent document 1 in a well-known thing as such a piping structure.

3 will be briefly described with reference to FIG. 3. The connection fitting 70 connected to the pipe 71 includes a collar portion 73 on the outer peripheral surface of the body portion 72 formed in a substantially L shape, and the inside of the body portion 72. Is provided with a flow path 74 through which water or hot water passes. A male screw portion 75 is formed on the outer peripheral surface of the flow path 74. The connection fitting 70 is inserted into the wall hole 77 formed in the wall plate 76 from the back side of the wall plate 76, and the nut 78 is screwed into the male screw portion 75 from the front side of the wall plate 76, whereby the wall plate 76. It is fixed to the back side. A connecting pipe is connected to the male threaded portion 75 of the connection fitting 70 on the front side of the wall plate 76, and a faucet is coupled to the connecting pipe.
Japanese Utility Model Publication No. 5-96690

  In general, the thickness of the wall plate to which the faucet is connected varies depending on each construction site, and as shown in FIG. 4, the wall plate may be thinner than that in FIG. In such a case, a spacer 79 is mounted between the back side of the wall plate 76 and the flange 73 of the connection fitting 70 in order to suppress the protruding dimension of the faucet forward from the wall plate 76. However, due to the thickness of the spacer 79, the connection fitting 70 protrudes greatly from the wall plate 76 to the back side. Usually, the space S formed between the wall plate 76 and the back plate 80 is extremely narrow. Depending on the construction site, the space S becomes narrow in order to mount the spacer 79 on the back side of the wall plate 76, and this space. There is a problem that the connection fitting 70 cannot be accommodated in S, and it is necessary to prepare various types of connection fittings 70 according to the wall plates 76 having different thicknesses.

  The present invention has been made paying attention to such problems existing in the prior art, and its purpose is to provide a wall even if the thickness of the wall plate to which the faucet is attached varies depending on each construction site. The amount of protrusion from the wall plate of the connection fitting and the connecting pipe attached to the plate is made constant.

  In order to achieve the above-mentioned object, the invention according to claim 1 arranges the connection fitting to which the water supply pipe is connected and the connection pipe to which the water faucet is connected, respectively on the back side and the front side with respect to the wall plate, In a piping structure in which a fitting is connected to a connecting pipe by inserting it into a wall hole drilled in a wall plate, a cylindrical body having a flow path through which a fluid passes is formed in either the connecting fitting or the connecting pipe. The cylindrical body is formed with a large-diameter portion having a male screw portion formed on the outer peripheral surface and a small-diameter portion having a smaller diameter than the large-diameter portion and a sealing material attached to the outer peripheral surface, in the length direction. A flow path through which a fluid passes is formed, and an internal thread portion to be screwed with the male screw portion and an insertion portion into which a small diameter portion is inserted are formed on the inner peripheral surface of the flow channel.

  In claim 1 of the present invention, even if the thickness of the wall plate is different depending on each site where the faucet is mounted, the difference between the thicknesses is absorbed, and the connection fitting and the wall plate of the connecting pipe are mounted on the wall plate. The amount of protrusion of can be made constant. Therefore, it is not necessary to prepare many types of connection fittings having different dimensions according to the thickness of the wall plate, and the manufacturing cost can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a wall plate 1 and a back plate 5 are erected in the bathroom A in the present invention, and a space S is formed between the wall plate 1 and the back plate 5. Are provided with a back pipe 10 to which a water supply pipe or a hot water pipe is connected, and a connection fitting 20 connected to the tip of the back pipe 10. A connecting pipe 30 is disposed on the front side of the wall plate 1 toward the bathroom A, and a crank pipe 50 is connected to the tip of the connecting pipe 30, and a faucet 60 is coupled to the crank pipe 50. The connection fitting 20 and the connecting pipe 30 are connected inside the wall hole 2 formed in the wall plate 1.

  The connection fitting 20 has a substantially L-shaped cross section, and a flow path 21 through which water or hot water passes is formed. An inlet opening 22 is formed at one end of the flow path 21, and a joint member 23 is attached to the inlet opening 22, and the back pipe 10 is connected to the joint member 23. An outlet opening 24 is formed at the other end of the flow path 21, and a cylindrical portion 25 inserted into the wall hole 2 on the outer peripheral surface of the outlet opening 24, and a flange portion that is in close contact with the side surface of the wall plate 1. 26 is integrally formed. The outlet opening 24 has an inner diameter larger than that of the flow path 21 inside the cylindrical portion 25, and a female screw portion 27 is formed on the inner peripheral surface thereof. In addition, an insertion portion 28 into which a part of a connecting pipe 30 described later is inserted is formed on the inner peripheral surface of the flow path 21.

  The connecting pipe 30 is composed of a first cylindrical body 31 and a second cylindrical body 41. The connection fitting 20 is coupled to one end of the first cylindrical body 31, and the second cylindrical body 41 is coupled to the other end. A faucet 60 is connected to the other end of the cylindrical body 41 via a crank tube 50.

  The first cylindrical body 31 of the connecting pipe 30 has a passage 32 through which water or hot water passes, and a large-diameter portion 33 having substantially the same diameter as the inner peripheral surface of the cylindrical portion 25 of the connection fitting 20. A small-diameter portion 35 having a smaller diameter than the large-diameter portion 33 and inserted into the insertion portion 28 of the connection fitting 20 is formed side by side in the length direction thereof. A first male screw portion 34 is formed on the outer peripheral surface of the large-diameter portion 33 and is screwed with the female screw portion 27 of the connection fitting 20. A pair of annular grooves 36 and 36 are formed on the outer peripheral surface of the small-diameter portion 35. The annular grooves 36 and 36 are fitted with sealing materials 37 and 37 for maintaining a watertight state with the connection fitting 20. In addition, the first cylindrical body 31 is formed with a flange portion 38 that is in close contact with the side surface of the wall plate 1 from the front side, and a second male screw portion 39 into which the second cylindrical body 41 is screwed.

  A flow path 42 through which water or hot water passes is formed inside the second cylindrical body 41 of the connection pipe 30, and a check valve 43 is mounted inside the flow path 42. In the check valve 43, the valve body 45 contacts and separates from the valve seat 44 formed in the flow path 42 from the secondary side, and the valve body 45 is biased to the valve seat 44 by the spring 46 from the secondary side. When the fluid is supplied from the primary side to the secondary side of the flow path 42, the fluid passes through to the secondary side by moving the valve body 45 away from the valve seat 44 due to the water flow pressure. When the fluid is supplied from the secondary side of 42 to the primary side, the valve body 45 remains seated on the valve seat 44 and therefore does not flow backward to the connection fitting 20 side. One end of the second cylindrical body 41 is formed with a female threaded portion 47 that is screwed with the second male threaded portion 39 of the first cylindrical portion 31, and the other end is rotatably mounted with a nut 48 for mounting the crank tube 50. Has been.

  The connecting procedure of the connecting fitting 20 and the connecting pipe 30 will be described. The connecting fitting 20 is arranged in the space S between the back plate 5 and the back side of the wall plate 1, and the flange portion 26 is connected to the wall of the wall plate 1. The hole 2 is brought into close contact with the periphery. At this time, the outlet opening 24 of the connection fitting 20 is inserted into the wall hole 2 of the wall plate 1. The connecting pipe 30 faces the outlet opening 24 of the connection fitting 20 in the horizontal direction from the front side of the wall plate 1, and the first male screw portion 34 is screwed with the female screw portion 27 of the connection fitting 20. The wall plate 1 is sandwiched between the portion 26 and the flange portion 38 of the connecting pipe 30. At this time, since the sealing materials 37 and 37 attached to the small-diameter portion 35 of the connecting pipe 30 are in close contact with the insertion portion 28 of the connecting fitting 20, the watertight state between the connecting fitting 20 and the connecting pipe 30 is maintained. .

  In the above embodiment, FIG. 2 shows a case where the wall plate 1 is thinner than FIG. When the wall plate 1 is thin compared to FIG. 1, the screwing position of the first male screw part 34 of the connecting pipe 30 with respect to the female screw part 27 of the connection fitting 20 is different, and the screwing position is deeper than that of FIG. . Even in this state, the sealing materials 37, 37 attached to the small diameter portion 35 of the connecting pipe 30 are in close contact with the insertion portion 28 of the connection fitting 20. The flange portion 26 of the connection fitting 20 is in close contact with the wall plate 1 from the back side, and the flange portion 38 of the connecting tube 30 is in close contact with the front side of the wall plate 1. Therefore, even when the thickness of the wall plate 1 is smaller than that of FIG. 1, the fitting for the wall plate 1 is adjusted by adjusting the screwing position of the connection fitting 20 and the connecting tube 30 according to the thickness. 20 and the protruding amount of the connecting pipe 30 do not change compared to FIG. Therefore, the connection fitting 20 can be reliably accommodated in the space S formed between the wall plate 1 and the back plate 5.

As described above, the piping structure of the present invention absorbs the difference in thickness even if the thickness of the wall plate varies depending on the site where the faucet is mounted, and the connection fitting and the connecting pipe that are mounted on the wall plate. The amount of protrusion from the wall plate can be made constant. Therefore, it is not necessary to prepare many types of connection fittings having different dimensions according to the thickness of the wall plate.
In the present embodiment, the connecting tube is formed by separately forming the first cylindrical body and the second cylindrical body, but the present invention is not limited to this and may be formed integrally.

It is explanatory drawing which shows the state by which the connection metal fitting and the connecting pipe were mounted | worn with the wall board. It is explanatory drawing when the thickness of a wall board is thin compared with FIG. It is explanatory drawing of a prior art. It is explanatory drawing when the thickness of a wall board is thin compared with FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1: Wall plate 2: Wall hole 20: Connection metal fitting 28: Insertion part 30: Connection pipe 31: 1st cylindrical body 32: Channel 33: Large diameter part 34: Male thread part 35: Small diameter part 41: 2nd cylindrical body 42: Channel 47: Female thread

Claims (1)

The connecting fitting to which the water supply pipe is connected and the connecting pipe to which the faucet is connected are respectively arranged on the back side and the front side with respect to the wall plate, and inserted into the wall hole drilled in the wall plate to be connected to the connection fitting In a pipe structure for connecting to a pipe, a cylindrical body having a flow path through which a fluid passes is formed in either the connection fitting or the connecting pipe, and the cylindrical body has a large diameter with a male screw portion formed on the outer peripheral surface. And a small-diameter portion having a smaller diameter than the large-diameter portion and having a sealing material attached to the outer peripheral surface are formed side by side in the length direction, and a flow path through which a fluid passes is formed on the other side. 2. A piping structure according to claim 1, wherein a female screw part screwed into the male screw part and an insertion part into which a small diameter part is inserted are formed on the surface.

Images