JP2011042927A - Connection structure of piping member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure of a piping member capable of reducing risks of the attachment of a foreign matter such as dust to a sealing member and the damage of the sealing member and reducing the occurrence of a sealing failure. <P>SOLUTION: In the connection structure of a piping member, a water faucet body 10 includes a first collar 16 and a first piping member side connection part 12 and a second piping member side connection part 14 communicating and connected with connection sockets 40a, 40b, a first water faucet component side connection part 42 of the connection sockets 40a, 40b has a second collar 48, the first piping member side connection part 12, the second piping member side connection part 14, and the first water faucet component side connection part 42 are provided to be inserted and fit into one another in a state that a first collar 16 and the second collar 48 abut on each other, and connected to one another so as to be turnable through an O-ring 46, in a state that the first collar 16 abuts on the second collar 48, a clip 70 is provided for regulating the come-off of the first piping member side connection part 12, the second piping member side connection part 14 from the first water faucet component side connection part 42. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a pipe member connection structure used when connecting a faucet body and the like and faucet parts such as a hot water supply pipe and a water supply pipe, and in particular, connecting these faucet parts using two pipe members. In connection with this, the present invention relates to a pipe member connection structure that requires adjustment of the interval between two pipe members.

  Various connection structures for pipe members that connect faucet parts such as a water faucet body and water faucet parts such as a hot water supply pipe and a water supply pipe are used. Of these, for example, when connecting a hot and cold water faucet body provided with a hot water side connection port and a water side connection port and a water supply pipe / hot water supply pipe routed behind the bathroom deck surface, In the aspect of connecting the hot water side and the water side of the water faucet parts using two piping members, according to the interval between the two mounting holes opened in the deck surface for inserting the hot water supply pipe and the water supply pipe It may be necessary to adjust the distance between the connecting portions of both the piping members. This is because the interval between the mounting holes provided in the unit bath or the like is not necessarily uniform, and it is necessary to individually cope with the situation depending on the situation of the faucet installation site.

  Therefore, conventionally, a socket formed in a substantially crank shape in which the pipe-side connection part on the other end side is eccentric with respect to the faucet body-side connection part on one end side is inserted into the connection port of the faucet body. Rotate the pipe side connection part by an appropriate amount with the connected faucet body side connection part as the rotation axis, and adjust the distance between the pipe side connection parts of the two sockets to correspond to the distance between the two mounting holes. Then, it was supposed to fix with a cap nut etc. (for example, refer patent document 1).

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No. 58-179447 (Microfilm No. 60-86691) (FIG. 1)

  However, in the connection structure of the conventional piping member described above, since the socket cannot be adjusted unless the cap nut is loosened, it can be carried to the installation location with the cap nut left loose or with the cap nut removed, The cap nut is loosened or removed during rotation adjustment. For this reason, the seal member attached to the connection port or socket of the faucet body is exposed to the outside during transportation or assembly work, and the seal member is assembled with foreign matter such as dust attached, or during assembly work. As a result, the seal member was damaged, which contributed to the seal failure.

  The present invention eliminates the problems of the conventional piping member connection structure described above, reduces the risk of foreign matter such as dust adhering to the sealing member, or damage to the sealing member, and reduces sealing defects. It is an object of the present invention to provide a pipe member connection structure that can be made to operate.

In order to solve the above problems, means taken by the present invention will be described below. The connection structure of the piping member of the present invention is
A first faucet component side connecting portion connected to the first faucet component such as a faucet body and a second faucet component such as a hot water supply pipe and a water supply pipe and connected to the first faucet component side 1 is a pipe member connection structure which is bent and formed in a crank shape with a second water faucet component side connection portion which is eccentrically arranged from the axis of the faucet component side connection portion,
The first faucet component is provided with a piping member side connection for communicating with the piping member, and the piping member side connection is provided with a first flange.
A second flange portion is provided at the first faucet component side connection portion of the piping member,
The piping member side connecting portion and the first faucet component side connecting portion are rotatably fitted to each other with a seal member in a state where the first flange portion and the second flange portion are in contact with each other. Provided to be connectable,
The piping member side connection portion and the first faucet component side connection are engaged with the first flange portion and the second flange portion while the first flange portion and the second flange portion are in contact with each other. A pipe member connection structure (Claim 1) characterized in that a locking member for restricting the removal from the part is provided.

  According to the present invention, the piping member is rotatably fitted to the first faucet component, and watertightness is achieved by the seal member, so that the stopper is prevented from coming off, That is, in the assembled state, the axial center position of the second faucet component side connection portion can be displaced by rotating the piping member around the first faucet component side connection portion. Therefore, for example, when connecting a hot and cold water mixing faucet and a hot water supply pipe / water supply piping by a piping member, the hot water supply pipe / water supply piping side of the two hot water side / water side pipe members connected to the hot / cold water mixing faucet The center position of the connecting part can be easily adjusted according to the hot water supply pipe and water supply pipe, and the hot water / water mixing faucet and the two pipe members are assembled and inserted and connected, so the sealing member It is not exposed to the outside, and it is possible to reduce the possibility that foreign matter adheres to the seal member or is damaged during assembly work.

  Here, examples of the “piping member” of the present invention include a connection socket bent in a crank shape. Examples of the “locking tool” include a clip that clamps and fixes the first collar part and the second collar part, but are not limited thereto, and the first collar part and the second collar part can be latched. If so, it may be a separate member from the first faucet component and the piping member, or may be integral with either the first faucet component or the piping member.

  Moreover, the said latching tool hold | maintains the substantially half circumference thru | or substantially all the outer periphery of the said piping member side connection part, and the substantially half circumference thru | or substantially all of the outer periphery of the said 1st faucet component side connection part. A second holding part for holding the circumference and a connecting part for connecting both the holding parts are provided, and the first holding part and the second holding part can be elastically expanded. It is good also as a connection structure (Claim 2) of the piping member of Claim 1 characterized by the above-mentioned.

  By using such a locking tool, it is sufficient to attach the locking tool to the respective holding portions, and the mounting work can be easily performed. Since each holding part is not formed over the entire circumference, it is easy to attach, but by holding each connection part, it is possible to securely prevent the holding part.

  The connection structure (claim 3) according to claim 2, wherein the locking tool is made of a metal wire.

  By using such a wire rod, it is possible to reduce the material and to eliminate the need for screw machining, so that it is possible to suppress both the material cost and the machining cost, and it is possible to manufacture the locking tool at a low cost. . Further, the locking tool can be formed in a compact manner and can be smoothly assembled even if the mounting space is small.

  The pipe member connection according to any one of claims 1 to 3, wherein the first faucet part is a hot and cold water mixing faucet, and the second faucet part is a hot water supply pipe and a water supply pipe. It is good also as a structure (Claim 4).

  When connecting a water tap to a hot water supply pipe or water supply pipe, a terminal device attached to the end of the hot water supply pipe or water supply pipe and connected to the faucet side is installed on the wall of a bathroom or kitchen, etc. It will be connected to the faucet side through the hole. Therefore, the installation positions of the mounting holes are often different not only in the case where they are provided at an accurate interval in advance, but also at each installation site. Therefore, it is particularly preferable that the present invention is applied to the connection structure of the piping member for connecting the hot water / water mixing faucet and the hot water supply pipe / water supply pipe so that the distance can be adjusted.

  Since the present invention is configured as described above, the rotation adjustment can be performed while the first faucet part and the piping member are assembled, and the adjustment can be performed without exposing the seal member to the outside. Can be reduced, the risk of damage to the seal member can be reduced, and the risk of seal failure can be reduced. Further, in the connection structure according to claim 2, it is easy to mount and secure the retaining. Further, the connection structure according to claim 3 can be manufactured at low cost.

It is a disassembled perspective view of the connection structure of the connection socket (pipe member) of this invention. It is a front view longitudinal cross-sectional view of the connection structure of the connection socket (pipe member) of this invention. It is a bottom view of a faucet body. It is a top view of a connection socket (pipe member). It is a principal part perspective bottom view of a faucet body and a connection socket (piping member). It is a principal part perspective view of a faucet body and a connection socket (pipe member). It is a principal part perspective view of the faucet body (first faucet part) and the connection socket (pipe member) in a state where the connection socket (pipe member) is rotated 41.4 degrees clockwise from the state of FIG. It is a principal part perspective view of the faucet body (1st faucet part) and the connection socket (piping member) in the state which rotated the connection socket (piping member) 90 degree | times clockwise from the state of FIG. FIG. 7 is a perspective view of main parts of a faucet body (first faucet part) and a connection socket (pipe member) in a state where the connection socket (pipe member) is rotated 180 degrees clockwise from the state of FIG. 6. It is a top view of a clip (locking tool). It is a front view of a clip (locking tool). It is a bottom view of a clip (locking tool).

  Next, an embodiment of the pipe member connection structure of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the pipe member connection structure 1 of the present invention includes a faucet body 10 of a hot and cold water faucet that is an example of a “first faucet part” and a “second faucet part”. This is applied to connection sockets 40a and 40b, which are examples of “piping members” that respectively connect hot water supply pipes and water supply pipes (not shown). More specifically, the pipe member connection structure 1 is used at a connection portion between the faucet body 10 and the connection sockets 40a and 40b. Terminals for hot water supply pipes and water supply pipes are respectively drawn into two mounting holes (FIG. 2) opened on the deck surface of the bathroom, etc., but according to the distance between these two terminal fixtures, the connection socket 40a , 40b, the connection structure 1 is applied.

  The faucet body 10 of the hot and cold water mixing faucet is used for mixing hot water and water flowing from the hot water supply pipe and water supply pipe in an appropriate amount so as to reach a desired temperature and discharging water from a water discharge pipe and shower (not shown). Is. The lower part of the faucet body 10 is formed in a cylindrical shape and has a flow path formed therein, and the first piping member side connection portion 12 on the hot water side into which hot water is introduced and the water side into which water is introduced. The 2nd piping member side connection part 14 is protrudingly provided.

  On the outer peripheral surfaces of the first piping member side connecting portion 12 and the second piping member side connecting portion 14, first flange portions 16 are respectively provided. As shown in FIG. 3, the first flange portion 16 is formed in a substantially circular shape having a few parallel portions 17 in the front and rear directions when viewed from the bottom surface. The first flange 16 has three sets of screw holes 18a, 18b, and 18c at positions facing each other about the axial centers of the connecting portions 12 and 14 along the axial direction of the connecting portions 12 and 14, respectively. Is formed.

  Three sets of screw holes 18a, 18b, and 18c are formed from one set of screw holes 18a provided along the front-rear direction of the faucet body 10 and from these screw holes 18a in the bottom view of the first flange portion 16, Centered on the axial center of each connection part 12, 14, the hot water side first heel part 16 is provided counterclockwise, and the water side first heel part 16 is provided clockwise at a position rotated by 41.4 degrees. Similarly, in the bottom view of the pair of screw holes 18b and the first flange portion 16, the first flange portion 16 on the hot water side is located on the left side from the screw hole 18a with the axial centers of the connection portions 12 and 14 as the center. Around, the first flange 16 on the water side consists of a set of screw holes 18c provided at a position rotated 90 degrees clockwise. Further, these screw holes 18a, 18b, 18c are provided at positions corresponding to insertion holes 50 provided in second flange portions 48 of connection sockets 40a, 40b described later.

  As shown in FIGS. 1 and 2, the outer peripheral surfaces of both connection parts 12, 14 are connected to the respective connection parts 12, 14 from the portion of the first flange 16 provided at the tip thereof toward the base end side. A rib 19 projecting along the shaft center is provided at a position facing the shaft center. The ribs 19 are respectively formed along the left-right direction (longitudinal direction) of the faucet body 10. Further, the height of the rib 19 from the outer peripheral surface of the connecting portions 12 and 14 is provided in substantially the same manner as the outer peripheral edge of the first flange portion 16. As will be described later, the clip 70 attached to each of the connection portions 12 and 14 has a connection socket 76 abutting against the rib 19 so that the connection sockets 40a and 40b can be rotated and adjusted. It is provided so that the joint rotation with 40a, 40b is regulated. In addition, the connection sockets 40a and 40b are adjusted by rotating in either direction by providing them at positions facing each other with the axis of each connection part 12 and 14 interposed therebetween. Even if it rotates together in either direction around 14, within about 180 degrees, the co-rotating clip 70 is brought into contact with one of the ribs 19 formed to face each other so that the common rotation is regulated. It is configured.

  Next, the connection sockets 40a and 40b will be described. As shown in FIGS. 1 and 2, the connection sockets 40 a and 40 b are connected to the first faucet component side connection connected to the first piping member side connecting portion 12 or the second piping member side connecting portion 14 of the faucet body 10. A base portion 52 extending in a direction substantially perpendicular to the axial center of the base portion 42, the base portion of the first faucet component side connection portion 42, and a base end side of the base portion 52. 1 is provided with a second faucet part side connection part 60 that extends along the axis of the faucet part side connection part 42 and is connected to the hot water supply pipe or the water supply pipe, and is bent in a substantially crank shape as a whole. Has been. Since both the connection sockets 40a and 40b are formed in the same shape, the following description will be made with respect to the water-side connection socket 40b, and the hot water-side connection socket 40a will be denoted by the same reference numerals in the drawings and description thereof will be omitted. To do.

  The insertion portion 44 on the distal end side of the first faucet component side connection portion 42 is formed in a cylindrical shape, and the outer diameter thereof is provided slightly smaller than the inner diameter of the second piping member side connection portion 14 of the faucet body 10. ing. Two O-rings 46 are mounted on the outer peripheral surface of the insertion portion 44, and are configured to be watertight with the inner peripheral surface of the second piping member side connection portion 14 to be inserted. Moreover, even if the insertion part 44 rotates in the 2nd piping member side connection part 14, it is comprised so that water-tightness can always be aimed at.

  A second collar portion 48 is provided around the proximal end side of the insertion portion 44. As shown in FIGS. 1 and 4, the second flange 48 is formed in a “track shape” in plan view, and as shown in FIG. 5, the longitudinal direction thereof is the same as that of the first flange 16 described above. It is provided with approximately the same length.

  As shown in FIGS. 1 and 2, the proximal end side of the first faucet component side connection portion 42 is bent and connected in a direction substantially perpendicular to the axis of the first faucet component side connection portion 42. A base portion 52 is formed.

  A second faucet that is connected to the base end side of the base portion 52 by bending in a direction substantially perpendicular to the longitudinal direction of the base portion 52 along the axial direction of the first faucet component side connection portion 42. The component side connection part 60 is formed. A male screw is engraved on the outer peripheral surface of the second faucet component side connection portion 60, and is provided so as to be screwable to a terminal device of the water supply pipe. Further, on the base end side of the second faucet component side connection portion 60, the outer peripheral portion on the base end side of the second faucet component side connection portion 60 and the base end side of the first faucet component side connection portion 42 in the bottom view. A flange 61 is provided so as to cover the bottom surface.

  As shown in FIGS. 4 and 5, the second flange portion 48 is provided with two insertion holes 50 at positions facing each other across the axis of the insertion portion 44. The insertion holes 50 are inserted into the faucet body 10 and the connection socket 40b is rotated about the axis of the insertion portion 44 to rotate the screw holes 18a, 18b of the first flange portion 16. , 18c, respectively. More specifically, as shown in FIGS. 6 to 9, the insertion hole 50 is screwed in accordance with any of the screw holes 18 a, 18 b, and 18 c, and is inserted into the faucet body 10, and the first By rotating the connection sockets 40a and 40b with the faucet component side connection portion 42 as an axis, the axial center position of the second faucet component connection portion 60 can be changed. When the screw hole 18b shown in FIG. 6 is used as a reference and the screw hole 18b is rotated by 41.4 degrees clockwise as viewed from the bottom as shown in FIG. As shown in FIG. 9, when adjusting to the screw hole 18c that is rotated 90 degrees clockwise as viewed from the bottom, and when adjusting to the screw hole 18a by rotating 180 degrees from FIG. 6, as shown in FIG. 6 can be adjusted in six ways: when rotating 180 degrees from FIG. 7 and adjusting to the screw hole 18b, and when rotating 180 degrees from FIG. 8 and adjusting to the screw hole 18c. Furthermore, these six adjustments can be made in the two connection sockets 40a and 40b, respectively, so that the axial center positions of the respective second faucet component side connection portions 60 can be adjusted.

  Next, the clip 70 as an example of the “locking tool” will be described. As shown in detail in FIGS. 10 to 12, the clip 70 is formed from a single stainless steel wire. Manufacturing does not require a separate mold and does not require screw processing such as a cap nut, thereby reducing manufacturing costs. The faucet body 10 is a cover faucet covered with a faucet cover (not shown), but can be easily mounted even in a narrow space such as in the faucet cover by reducing the size using a wire rod. Is possible. The clip 70 includes a first holding portion 72 formed in a semicircular shape, and a second holding portion 74 formed in a semicircular shape having the same axial center as that of the first holding portion 72. And a connecting portion 76 connecting the base end portion of the first holding portion 72 and the base end portion of the second holding portion 74, and the first holding portion 76 is used as a fulcrum. The part 72 and the second holding part 74 are configured to be elastically expandable.

  As shown in FIG. 10, the first holding portion 72 is formed in a semicircular shape, and its inner diameter is provided with a radius of about 13 mm. On the other hand, the second holding portion 74 is similarly formed in a semicircular shape, and has an inner diameter of about 10 mm. Each inner diameter is provided so as to correspond to the outer diameter of the other part to be held, and the first holding part 72 is the first piping member side connecting part 12 of the faucet body 10 or the second piping member. The side connection portion 14 is provided with an inner diameter that substantially matches the outer diameter of the base end side portion of the first flange portion 16. Further, the second holding portion 74 is provided with an inner diameter that substantially matches the outer diameter of the base portion 52 of the connection sockets 40a and 40b.

  As shown in FIG. 11, the first holding part 72 and the second holding part 74 are connected by a connecting part 76 formed in a “U” shape when viewed from the front. In the connecting portion 76, a first holding portion 72 is connected to an upper end portion 77 formed in a “U” shape, and a second holding portion 74 is connected to a lower end portion 78. As described above, the first holding portion 72 attached to the connection portions 12 and 14 on the faucet body 10 side is connected to the upper end portion of the connection portion 76, and the connection sockets 40 a and 40 b are connected to the lower end portion of the connection portion 76. A second holding portion 74 attached to the base portion 52 on the side is connected.

  The clip 70 is configured in this way, and by holding and fixing the first flange portion 16 of the faucet body 10 and the second flange portion 48 of the connection sockets 40a and 40b, it is possible to reliably prevent the removal of both members. It is. On the other hand, since the first holding part 72 and the second holding part 74 are only formed in a semicircular shape, it is more than necessary when mounting and holding the faucet body 10 and the connection sockets 40a and 40b. Therefore, it is not necessary to expand both the holding portions 72 and 74, and the clip 70 can be easily mounted and held.

  Furthermore, curved portions 73 and 75 that are curved toward the outer circumferential direction are formed at the respective tips of the first holding portion 72 and the second holding portion 74. In addition, the connecting portions 12 and 14 are configured to be smoothly mounted on the first holding portion 72 and the base portion 52 can be mounted smoothly without being caught on the second holding portion 74.

  Next, a method of assembling the faucet body 10 and the connection sockets 40a and 40b using the connection structure 1 of the pipe member and adjusting the connection sockets 40a and 40b in accordance with the distance between the hot water supply pipe and the water supply pipe will be described. . When the faucet body 10 and the connection sockets 40a and 40b are shipped, both members are temporarily fixed by the clip 70. That is, after inserting the insertion portions 44 of the connection sockets 40 a and 40 b into the connection portions 12 and 14 on the faucet body 10 side, the first flange portion 16 and the second flange portion 48 are clamped and fixed by the clip 70. The faucet body 10 and the connection sockets 40a and 40b are prevented from coming off. In this state, since the faucet body 10 and the connection sockets 40a and 40b are not fixed by the screw 2, the connection sockets 40a and 40b can rotate with respect to the faucet body 10, but the clip 70 It is not easily removed.

  The clip 70 is configured as described above, and the tips of the first holding part 72 and the second holding part 74 are elastically expanded so that the faucet body 10 and the connection socket 40a or the connection socket 40b are expanded. It is mounted from the side. The first holding portion 72 is held around the piping member side connecting portions 12 and 14 on the proximal end side than the first flange portion 16, and the second holding portion 74 is held around the base portion 52, The stopper body 10 and the connection socket 40a or the connection socket 40b are pinched and fixed so as to be rotatable.

  At the construction site, the connection sockets 40a and 40b, which are held in the faucet body 10 by the clip 70, are aligned with the positions of the hot water supply pipe and the terminal of the water supply pipe. More specifically, since the terminal of the hot water supply pipe / water supply pipe is drawn into the mounting hole opened on the deck surface of the bathroom or the like, the second faucet component side connection portion 60 of the connection sockets 40a, 40b. The distance between the two connection sockets 40a and 40b is adjusted so that can be connected to these terminals.

  At this time, the connection socket 40a or the connection socket 40b is rotated around the first faucet component side connection portion 42 with respect to the faucet body 10 while being temporarily fixed by the clip 70. The axial center position of the second faucet component side connection portion 60 is adjusted. While aligning the position of the insertion hole 50 of the second flange 48 with the position of any of the screw holes 18a, 18b, 18c of the first flange 16, the distance between the second faucet component side connection portions 60 is set to the hot water supply pipe.・ Adjust the distance between the terminals of the water supply piping. After the adjustment is completed, both the flanges 16 and 48 are completely fixed with the screw 2 to complete the adjustment and assembling work.

  In this manner, the insertion portions 44 of the connection sockets 40a and 40b to which the O-ring 46 is attached are inserted into the pipe member side connection portions 12 and 14 on the faucet body 10 side in advance, and the faucet body 10 and The connection sockets 40a and 40b can be transported to the installation location with the connection sockets 40a and 40b assembled, and the fitting portion 44 is connected to the piping member side connection portions 12 and 14 for adjusting the distance between the connection sockets 40a and 40b at the installation location. It can be carried out while being inserted in. Therefore, there is very little possibility that the O-ring 46 is exposed to the outside in any of shipment, adjustment work, and assembly work, and there is a possibility that foreign matter adheres to the O-ring 46 or the O-ring 46 is damaged, resulting in poor sealing. Can be significantly reduced.

  The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, the positions of the screw holes and insertion holes of the first flange part 16 or the second flange part 48 may be variously changed, and the number of screw holes of the first flange part 16 may be increased or decreased. Moreover, although the insertion part 44 was provided in the connection socket 40a, 40b side in the above-mentioned example, it is good also as providing in the faucet main body 10 side. Further, the positions of the first holding part 72 and the second holding part 74 of the clip 70 can be changed corresponding to each connection part to be held, and these can be changed up and down or left and right. May be. Moreover, in inventions other than Claim 2, other shapes of locking tools may be used, and in inventions other than Claim 3, locking tools that do not use wires may be used.

  INDUSTRIAL APPLICABILITY The present invention can be widely used in a pipe member connection structure that connects a first faucet part such as a water faucet body and a second faucet part such as a hot water supply pipe and a water supply pipe.

DESCRIPTION OF SYMBOLS 1; Connection structure, 2; Screw, 10; Faucet body, 12; 1st piping member side connection part, 14: 2nd piping member side connection part, 16; 1st collar part, 17; Parallel part, 18a, 18b 18c; screw hole, rib 19, 40a, 40b; connection socket, 42; first faucet component side connection part, 44; insertion part, 46; O-ring, 48; second flange part, 50; 52; base part, 60; second faucet component side connection part, 61; flange, 70; clip, 72; first holding part, 73; bending part, 74; second holding part, 75; 76; articulation part, 77; upper end part, 78; lower end part.

Claims (4)

A first faucet component side connecting portion connected to the first faucet component such as a faucet body and a second faucet component such as a hot water supply pipe and a water supply pipe and connected to the first faucet component side 1 is a pipe member connection structure which is bent and formed in a crank shape with a second water faucet component side connection portion which is eccentrically arranged from the axis of the faucet component side connection portion,
The first faucet component is provided with a piping member side connection for communicating with the piping member, and the piping member side connection is provided with a first flange.
A second flange portion is provided at the first faucet component side connection portion of the piping member,
The piping member side connecting portion and the first faucet component side connecting portion are rotatably fitted to each other with a seal member in a state where the first flange portion and the second flange portion are in contact with each other. Provided to be connectable,
The piping member side connection portion and the first faucet component side connection are engaged with the first flange portion and the second flange portion while the first flange portion and the second flange portion are in contact with each other. A piping member connection structure, characterized in that a locking member for restricting the removal from the part is provided.   The locking tool has a first holding portion that holds substantially the entire circumference or substantially the entire circumference of the piping member side connection portion and a substantially half circumference or substantially the entire circumference of the outer periphery of the first faucet component side connection portion. A second holding part for holding and a connecting part for connecting both the holding parts, and the first holding part and the second holding part can be elastically expanded. The piping member connection structure according to claim 1, characterized in that:   The pipe member connection structure according to claim 2, wherein the locking member is made of a metal wire.   The pipe member connection according to any one of claims 1 to 3, wherein the first faucet part is a hot and cold water mixing faucet, and the second faucet part is a hot water supply pipe and a water supply pipe. Construction.

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