Faucet socket connection device, faucet, and faucet installation method

Abstract

To provide a connection device for a faucet socket that is easy to install.SOLUTION: A connection device 80 for a faucet socket 10 comprises a cylindrical piping take-out member 20 that connects between the faucet socket 10 and piping 3 arranged on a back side of a wall part 2 by screwing the faucet socket 10 in a state of being fixed to the wall part 2 constituting a mounting surface S of a faucet 1. Further, the connection device 80 comprises a seal ring 60 that is interposed between the inner peripheral surface 44 of the piping take-out member 20 having a female screw part 46 and the outer peripheral surface 43 of a cylindrical connection part 41 having a male screw part 47 screwed to the female screw part 46 and provided in the faucet socket 10. Also, the connection device 80 comprises a feed seat 70 having a nut part 72 screwed to the male screw part 47 of the piping take-out member 20. Furthermore, a screwing position of the faucet socket 10 with respect to the piping take-out member 20 is fixed by tightening the feed seat 70 from the mounting surface S side to the wall part 2.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a faucet socket connecting device, a faucet, and a faucet installation method. [Background technology]

[0002] Conventionally, there are wall-mounted faucets that use a tubular faucet socket to connect the faucet body to piping arranged on the back side of a wall. For example, the faucet described in Patent Document 1 has a faucet body with two water inlets. In addition, cold water piping and hot water piping are arranged on the back side of the wall that forms the mounting surface. Furthermore, these cold water piping and hot water piping are connected to the faucet body via a pair of faucet sockets that correspond to the two water inlets. This results in a configuration that functions as a hot and cold water mixing faucet.

[0003] Furthermore, as shown in FIG. 13, some such wall-mounted faucets 101 have a configuration in which a faucet socket 104 is connected to a pipe 105 arranged on the back side of the wall portion 102 by screwing the faucet socket 104 into a pipe outlet member 103 fixed to the wall portion 102 that constitutes the mounting surface S.

[0004] Specifically, in this conventional faucet 101, a female screw portion 107 is provided on an inner peripheral surface 106 of a piping pull-out member 103 that opens on the mounting surface S side of a wall portion 102. Also, a tubular connecting portion 110 having a male screw portion 109 that screws into the female screw portion 107 on the piping pull-out member 103 side on its outer peripheral surface 108 is provided on one end side of a crank-shaped faucet socket 104. Furthermore, the faucet socket 104 is screwed into the piping pull-out member 103 with a seal tape or sealant interposed between the male screw portion 109 of the tubular connecting portion 110 and the female screw portion 107 on the piping pull-out member 103 side. This fills the gap between the male thread portion 109 and the female thread portion 107 that screw together, thereby ensuring a watertight connection between the tubular connection portion 110 of the faucet socket 104 and the piping pull-out member 103, and also maintains the screwed position of the faucet socket 104 relative to the piping pull-out member 103. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2002-173963 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the above-mentioned conventional construction method, the task of wrapping the sealing tape tightly around the male thread portion 109, or the task of applying a sealant to the male thread portion 109, the female thread portion 107, or both, is cumbersome.

[0007] In addition, the arrangement of the faucet mounting portion 111 provided on the other end side of the faucet socket 104, for example, the distance from the mounting surface S, and the intervals between each of the faucet mounting portions 111 connected to the multiple water supply ports 113 provided on the faucet body 112, are determined by the screwing position of the faucet socket 104 relative to the piping extraction member 103, that is, the amount of screwing. However, after the faucet socket 104 is screwed to the piping extraction member 103, the faucet socket 104 may be screwed, causing loosening of the sealing tape or sealant interposed between the male screw portion 109 and the female screw portion 107. For this reason, in the configuration of the above-mentioned conventional technology, when the faucet socket 104 is screwed to the piping extraction member 103, accuracy in positioning is required. This increases the difficulty of construction, and there is still room for improvement in this respect.

[0008] The present invention has been made to solve the above problems, and its object is to provide a faucet socket connecting device, a faucet, and a faucet installation method that are easy to install. [Means for solving the problem]

[0009] The faucet socket connection device that solves the above-mentioned problem is a faucet socket connection device equipped with a cylindrical piping extraction member that connects the faucet socket to a piping arranged on the back side of the wall by screwing the faucet socket into the wall while it is fixed to the wall that constitutes the mounting surface of the faucet, and is equipped with a seal ring interposed between the inner surface of the piping extraction member having a female thread portion and the outer surface of a tubular connecting portion provided on the faucet socket and having a first male thread portion that screws into the female thread portion, and a feed seat that has a threaded portion for a second male thread portion provided on the outer surface of the tubular connecting portion and is tightened against the wall from the mounting surface side to fix the screwed position of the faucet socket relative to the piping extraction member.

[0010] According to the above configuration, a stable seal can be ensured by the seal ring interposed between the cylindrical connection part of the faucet socket and the pipe extraction member. Therefore, after the faucet socket is screwed to the pipe extraction member, the screw position of the faucet socket can be easily adjusted by turning the screw of the faucet socket without causing a decrease in the seal. Furthermore, the screw position of the faucet socket can be easily fixed in the aligned state by tightening the feed seat against the wall. This makes it easy to install the faucet. In addition, the gap between the female screw part and the first male screw part that screw together is closed by tightening the feed seat, thereby suppressing rattling of the faucet socket.

[0011] In a faucet socket connecting device that solves the above-mentioned problems, an engagement groove for the seal ring is recessed on one side of the inner surface of the pipe removal member and the outer peripheral surface of the tubular connecting portion, and a smooth sealing surface against which the seal ring abuts is provided on the other side of the inner surface of the pipe removal member and the outer peripheral surface of the tubular connecting portion, and it is preferable that the width of the sealing surface along the axial direction of the tubular connecting portion is greater than or equal to the width of the engagement groove plus the axial length of the tubular connecting portion equivalent to one pitch of the first male thread portion.

[0012] That is, by disposing the seal ring in the fitting groove, the disposition of the seal ring can be stably maintained. Also, the seal ring can be abutted against the smooth seal surface and crushed to ensure stable sealing. Based on the width set for the seal surface, the screw-in position of the faucet socket can be easily adjusted by turning the screw while ensuring stable sealing.

[0013] It is preferable that a faucet socket connection device that solves the above-mentioned problems includes an engagement groove for the seal ring recessed at an axial position deeper than the female thread portion on the inner surface of the pipe removal member or at an axial position closer to the base end than the first male thread portion on the outer surface of the tubular connection portion.

[0014] According to the above-mentioned configuration, when the faucet socket is screwed to the pipe extraction member, the seal ring is less likely to get caught on the threads. This makes it difficult for the seal ring to be scratched, thereby ensuring its sealing performance and ensuring high reliability.

[0015] In the faucet socket connecting device that solves the above problem, it is preferable that a fitting portion for a tool used to tighten the feed seat is provided on the outer periphery of the feed seat. According to the above-mentioned configuration, installation can be performed more easily, and the tightening force of the feed seat can be strengthened, so that the screw-fitting position of the faucet socket relative to the pipe pull-out member can be fixed more reliably.

[0016] The faucet that solves the above problem includes any one of the faucet socket connection devices described above. The method for installing a faucet that solves the above problem is a method for installing a faucet using a cylindrical pipe extraction member that is fixed to a wall portion that constitutes the mounting surface of the faucet and that connects the faucet socket and a pipe arranged on the back side of the wall portion by screwing the faucet socket to the wall portion, and the method includes: attaching the faucet socket to the pipe extraction member with a seal ring interposed between an inner peripheral surface of the faucet socket having a female screw portion and an outer peripheral surface of a cylindrical connecting portion provided on the faucet socket, the faucet socket being attached to the pipe extraction member with a seal ring interposed between the inner peripheral surface of the faucet socket having a female screw portion and a first male screw portion that screws into the female screw portion; the step of screwing a socket into the faucet socket; the step of adjusting the position of the faucet mounting portion provided on the faucet socket by screwing the faucet socket while the seal ring watertightly seals between the outer peripheral surface of the tubular connecting portion and the inner peripheral surface of the piping extraction member; and the step of screwing a feed seat threadedly attached to a second male thread portion provided on the outer peripheral surface of the tubular connecting portion to tighten the feed seat to the wall portion from the mounting surface side, thereby fixing the screwed position of the faucet socket relative to the piping extraction member. Effect of the Invention

[0017] According to the present invention, the installation of the faucet can be easily performed. [Brief description of the drawings]

[0018] [Figure 1] Plan view of the faucet. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a perspective view of a faucet socket and a piping removal member that constitute the faucet. [Figure 4] FIG. 2 is an exploded perspective view of a faucet socket and a piping removal member that constitute the faucet. [Diagram 5] 4 is a cross-sectional view of a faucet socket and a piping removal member that constitute the faucet. FIG. [Figure 6] FIG. 4 is a partial cross-sectional view of a faucet socket and a piping outlet member that constitute the faucet. [Figure 7] FIG. 4 is an enlarged cross-sectional view of a faucet socket and a piping removal member that constitute the faucet. [Figure 8] 4 is a flowchart showing a method for installing a faucet. [Figure 9] FIG. 11 is a cross-sectional view showing an arrangement of seal rings in another example. [Figure 10] FIG. 11 is a cross-sectional view showing an arrangement of seal rings in another example. [Figure 11] FIG. 11 is a cross-sectional view showing an arrangement of seal rings in another example. [Figure 12] FIG. 11 is a cross-sectional view showing another example of a pipe removal member. [Figure 13] FIG. 1 is an illustration of a faucet according to the prior art. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a faucet socket connecting device will be described below with reference to the drawings. As shown in Figures 1 and 2, the faucet 1 of this embodiment is configured as a wall-mounted faucet in which a faucet body 11 is connected to a piping 3 arranged on the back side of a wall portion 2 that constitutes an installation surface S via a tubular crank-type faucet socket 10.

[0020] More specifically, the faucet body 11 of this embodiment has a long, generally box-like outer shape extending horizontally along the mounting surface S. The faucet body 11 also has a first water inlet 13a and a second water inlet 13b spaced apart in the longitudinal direction at a position opposite the mounting surface S. Furthermore, a cold water pipe 3a and a hot water pipe 3b are disposed on the rear side of the wall 2. The faucet 1 of this embodiment also has a first faucet socket 10a interposed between the first water inlet 13a and the cold water pipe 3a of the faucet body 11, and a second faucet socket 10b interposed between the second water inlet 13b and the hot water pipe 3b.

[0021] The faucet body 11 also has a shower outlet 14 and a faucet outlet 15 provided in a longitudinal position between the first water inlet 13a and the second water inlet 13b. The faucet body 11 also has a switch handle 16 provided at one longitudinal end thereof, and a temperature adjustment handle 17 provided at the other longitudinal end thereof. The faucet 1 of this embodiment is configured as a hot and cold water mixing faucet that can switch the water flow state of the shower outlet 14 and the faucet outlet 15 by operating the switch handle 16, and can adjust the temperature of the hot and cold water discharged by operating the temperature adjustment handle 17.

[0022] 1 to 3, the faucet 1 of this embodiment is equipped with a cylindrical pipe pull-out member 20 that is fixed to the wall 2. Specifically, this pipe pull-out member 20 is fixed to the wall 2 with its first end 21 opening on the mounting surface S side. Furthermore, the faucet socket 10 is screwed into the first end 21 of the pipe pull-out member 20. Thus, the faucet 1 of this embodiment is configured such that the pipe 3 arranged on the back side of the wall 2 and the faucet socket 10 are connected via the pipe pull-out member 20 to enable water to flow through.

[0023] That is, the faucet 1 of this embodiment is provided with a first pipe outlet member 20a to which the first faucet socket 10a is screwed, and a second pipe outlet member 20b to which the second faucet socket 10b is screwed, while being fixed to the wall portion 2. Furthermore, a water pipe 3a is connected to a second end portion 22 of the first pipe outlet member 20a, and a hot water pipe 3b is connected to a second end portion 22 of the second pipe outlet member 20b. Thus, the faucet 1 of this embodiment is configured such that hot and cold water flowing through the water pipe 3a and the hot water pipe 3b are supplied to the faucet body 11 via the first and second faucet sockets 10a, 10b and the first and second pipe outlet members 20a, 20b.

[0024] More specifically, as shown in Figures 3 to 5, the piping extraction member 20 of this embodiment has a substantially L-shaped bent pipe shape. Furthermore, the piping extraction member 20 has a flat mounting flange 24 provided in the vicinity of the first end 21 in a state where it protrudes radially outward from the outer circumferential surface 23 of the piping extraction member 20. The piping extraction member 20 of this embodiment is configured to be fixed to the wall portion 2 using the mounting flange 24.

[0025] Specifically, the piping extraction member 20 of this embodiment is assembled to the wall 2 in a state in which a tip portion of the first end 21 protrudes toward the mounting surface S side by inserting the first end 21 into a mounting hole 25 provided in the wall 2 from the back side of the wall 2. The piping extraction member 20 has a male screw portion 26 provided on an outer peripheral surface 23 of the first end 21 protruding toward the mounting surface S side. The piping extraction member 20 further includes an annular fixing plate 28 having a female screw portion 27 that screws into the male screw portion 26 and is attached to the first end 21 from the mounting surface S side. The piping extraction member 20 of this embodiment is configured to be fixed to the mounting hole 25 in a manner in which the wall 2 is sandwiched between the fixing plate 28 and the mounting flange 24.

[0026] In the faucet 1 of this embodiment, the pipe extraction member 20 is fixed to the wall 2 with its second end 22 facing vertically downward. In addition, an annular sandwiching plate 31 is interposed between the mounting flange 24 and the wall 2, and washers 32a, 32b are interposed between the fixing plate 28 and the wall 2. Furthermore, the mounting flange 24 is provided with a plurality of screw holes 34, and the fixing plate 28 and the sandwiching plate 31 are provided with a plurality of through holes 35. The pipe extraction member 20 of this embodiment is configured to be fixed to the wall 2 in a state in which rotation around the first end 21 inserted into the mounting hole 25 is restricted based on the fastening force of the screw 36 screwed into the mounting flange 24 through these through holes 35.

[0027] The faucet socket 10 of this embodiment includes a socket body 40 having a long, flat, generally rectangular cylindrical outer shape, a cylindrical connection part 41 provided at one longitudinal end of the socket body 40, and a faucet mounting part 42 provided at one longitudinal end of the socket body 40. Specifically, the cylindrical connection part 41 and the faucet mounting part 42 are provided in a manner that they protrude in different directions from each other in the thickness direction of the socket body 40. This gives the faucet socket 10 of this embodiment a crank-shaped outer shape.

[0028] Furthermore, the outer peripheral surface 43 of the cylindrical connection part 41 is provided with a male screw part 47 that screws into a female screw part 46 provided on an inner peripheral surface 44 of the pipe extraction member 20 that opens on the mounting surface S side while the pipe extraction member 20 is fixed to the wall part 2. That is, the faucet socket 10 of this embodiment is screwed to the first end part 21 of the pipe extraction member 20 from the mounting surface S side by screwing the socket body 40 and the faucet attachment part 42 together around the cylindrical connection part 41 having the male screw part 47. The faucet socket 10 of this embodiment is thus configured such that the arrangement of the faucet attachment part 42 is determined based on the screwing position relative to the pipe extraction member 20, that is, the amount of screwing.

[0029] The faucet socket 10 of this embodiment is provided with openings 51, 52 at both longitudinal ends, each of which has a short cylindrical shape that opens in a direction opposite to the direction in which the tubular connecting portion 41 is protruded. The openings 51, 52 are provided with female threads 53, 54 in the inside of the tubes. Furthermore, of the openings 51, 52, a tubular screw member 56 is screwed into the opening 52 provided at the longitudinal end opposite the tubular connecting portion 41, and a cap nut 55 is screwed to the outer periphery of the tubular screw member 56. The faucet socket 10 of this embodiment is configured so that the cap nut 55 and the tubular screw member 56 form the faucet mounting portion 42, and the connection can be made using the cap nut 55 provided to rotate freely.

[0030] Furthermore, a water stop valve 57 having an axial outer shape is screwed into an opening 51 provided at the longitudinal end of the faucet socket 10 on the same side as the tubular connecting part 41. The faucet socket 10 of this embodiment is thus configured so that the water stop valve 57 built in at a position coaxial with the tubular connecting part 41 can be operated from the same direction as the faucet mounting part 42 is provided, that is, from the mounting surface S side.

[0031] More specifically, as shown in Figures 6 and 7, the faucet socket 10 of this embodiment is screwed to the piping pull-out member 20 with a seal ring 60 interposed between the outer surface 43 of its tubular connection portion 41 and the inner surface 44 of the piping pull-out member 20.

[0032] Specifically, the seal ring 60 of this embodiment is configured as an O-ring having a substantially circular cross section. In addition, an annular fitting groove 61 extending in the circumferential direction is provided on the inner peripheral surface 44 of the piping extraction member 20 at an axial position deeper than the female screw portion 46. That is, in the faucet socket 10 of this embodiment, the cylindrical connection portion 41 is screwed to the piping extraction member 20 with the seal ring 60 fitted into the fitting groove 61. Furthermore, a smooth seal surface 62 is provided on the outer peripheral surface 43 of the cylindrical connection portion 41 at an axial position on the tip side of the male screw portion 47, more specifically, at the tip portion of the cylindrical connection portion 41. The seal ring 60 of this embodiment is configured to abut against the seal surface 62 and be crushed in the radial direction to watertightly seal between the outer peripheral surface 43 of the cylindrical connection portion 41 and the inner peripheral surface 44 of the piping extraction member 20.

[0033] In the faucet 1 of this embodiment, the female screw portion 46 on the pipe extraction member 20 side and the male screw portion 47 on the faucet socket 10 side are both configured as parallel screws. In addition, the faucet socket 10 has a width W1 of the seal surface 62 along the axial direction of its cylindrical connection portion 41 that is equal to or greater than the width W0 of the fitting groove 61 provided on the inner peripheral surface 44 of the pipe extraction member 20 plus the axial length L1 of the cylindrical connection portion 41 that corresponds to one pitch of the male screw portion 47 (W1≧W0+L1). Thus, the faucet 1 of this embodiment is configured such that the position of the faucet mounting portion 42 can be easily adjusted by turning the screw of the faucet socket 10 while ensuring stable sealing.

[0034] In addition, the faucet 1 of this embodiment is equipped with a feed seat 70 that is attached to the faucet socket 10 in a state where it is positioned between the socket body 40 and the wall portion 2 by being screwed into the male thread portion 47 provided on the outer peripheral surface 43 of the tubular connecting portion 41.

[0035] That is, in the faucet socket 10 of this embodiment, the axial tip side of the cylindrical connection portion 41 in the male screw portion 47 forms a first male screw portion 47a that screws into the female screw portion 46 provided on the inner peripheral surface 44 of the pipe extraction member 20. The base end side of this male screw portion 47 forms a second male screw portion 47b into which the feed seat 70 is screwed.

[0036] Specifically, the feed seat 70 includes a nut portion 72 having a female thread portion 71 on the inner circumference and screwed into the male thread portion 47, and a cover portion 73 having a flat cylindrical shape with a larger diameter than the nut portion 72. That is, the feed seat 70 moves in the axial direction of the cylindrical connection portion 41 by being turned based on the screwing relationship between the nut portion 72 as a screwing portion and the male thread portion 47. The feed seat 70 of this embodiment is configured so that the cover portion 73 covers the outside of the fixing plate 28 for fixing the piping extraction member 20 to the wall portion 2 as described above by moving toward the tip side of the cylindrical connection portion 41, that is, in the direction approaching the wall portion 2.

[0037] Furthermore, the feed seat 70 of this embodiment is further tightened against the wall 2 by further turning the screw from this state. Specifically, the feed seat 70 is tightened against the wall 2 via the fixing plate 28 by the axial end of the nut portion 72 protruding into the cylinder of the cover portion 73 abutting against the fixing plate 28. Furthermore, a fitting portion 74 for tightening using a tool is provided on the outer periphery of the nut portion 72. In addition, in the feed seat 70 of this embodiment, the fitting portion 74 has a hexagonal fitting shape. The faucet socket 10 of this embodiment is configured so that the screwing position relative to the pipe extraction member 20 is fixed based on the tightening force of the feed seat 70 against the wall 2.

[0038] That is, by tightening the feed seat 70 against the wall 2, an axial force is generated in a direction that draws the tubular connection portion 41 of the faucet socket 10, on which the male screw portion 47 is provided, toward the mounting surface S of the wall 2, based on the screw-engagement relationship between the feed seat 70 and the male screw portion 47. Furthermore, the gap between the male screw portion 47 and the female screw portion 46 is closed based on this axial force, so that the screw threads that screw into each other are pressed against each other. In this embodiment, this allows the connection device 80 for the faucet socket 10 to easily fix the screw-engagement position relative to the pipe extraction member 20 while ensuring stable sealing, and also suppresses backlash, with the arrangement of the faucet mounting portion 42 adjusted.

[0039] Next, the operation of this embodiment will be described. 8, when installing the faucet 1, first, the seal ring 60 is fitted into the fitting groove 61 provided on the inner circumferential surface 44 on the first end 21 side of the inside of the tube of the piping extraction member 20 (step S101). Then, the piping extraction member 20 is fixed to the wall portion 2 that constitutes the mounting surface S of the faucet 1 (step S102).

[0040] Furthermore, the feed seat 70 is screwed onto the male thread portion 47 provided on the outer circumferential surface 43 of the cylindrical connection portion 41 of the faucet socket 10 (step S103). Then, the cylindrical connection portion 41 of the faucet socket 10 is screwed onto the piping pull-out member 20 fixed to the wall portion 2 (step S104).

[0041] Next, the position of the faucet mounting portion 42 provided on the faucet socket 10 is adjusted by screwing the faucet socket 10 around the cylindrical connecting portion 41 screwed onto the piping pull-out member 20 (step S105).

[0042] As shown in Fig. 1, the adjustment of the position of the faucet mounting portion 42 includes adjustment of the distance D1 from the mounting surface S based on the axial movement of the cylindrical connection portion 41 by screwing the faucet socket 10. Furthermore, in the faucet 1 configured as a hot and cold water mixing faucet, the adjustment includes alignment of the faucet mounting portion 42 on the first faucet socket 10a side screwed into the first pipe extraction member 20a with the faucet mounting portion 42 on the second faucet socket 10b side screwed into the second pipe extraction member 20b. In other words, the work of making the distance D2 between the first and second faucet mounting portions 42a, 42b coincide with the distance D0 between the first water supply port 13a and the second water supply port 13b provided on the faucet body 11 is performed. The amount of screwing of the faucet socket 10 required to adjust the position of the faucet mounting portion 42 is set within a range in which stable sealing is ensured by the sealing ring 60 interposed between the outer surface 43 of the tubular connection portion 41 and the inner surface 44 of the faucet mounting portion 42, approximately within one pitch of the male screw portion 47.

[0043] 8, with the first and second faucet mounting portions 42a, 42b aligned in this manner, the feed seats 70, 70 screwed into the respective cylindrical connecting portions 41, 41 of the first and second faucet sockets 10a, 10b are screwed in, thereby fastening the feed seats 70, 70 to the wall portion 2. This fixes the screwing position of the first faucet socket 10a relative to the first piping extraction member 20a, and the screwing position of the second faucet socket 10b relative to the second piping extraction member 20b (step S106).

[0044] Next, in this state, the first water inlet 13a and the second water inlet 13b of the faucet body 11 are connected to the first and second faucet mounting parts 42a, 42b (step S107). This connects the faucet body 11 to the cold water pipe 3a and the hot water pipe 3b arranged on the back side of the wall part 2 via the first and second faucet sockets 10a, 10b and the first and second faucet mounting parts 42a, 42b.

[0045] Next, the effects of this embodiment will be described. (1) The connection device 80 of the faucet socket 10 includes a cylindrical pipe extraction member 20 that connects the faucet socket 10 to the pipe 3 arranged on the back side of the wall 2 by screwing the faucet socket 10 in a state where the connection device 80 is fixed to the wall 2 that constitutes the mounting surface S of the faucet 1. The connection device 80 also includes a seal ring 60 that is interposed between the inner peripheral surface 44 of the pipe extraction member 20 that has a female thread portion 46 and the outer peripheral surface 43 of a cylindrical connection portion 41 that has a male thread portion 47 that screws into the female thread portion 46 and is provided on the faucet socket 10. The connection device 80 also includes a feed seat 70 that has a nut portion 72 that constitutes a screwing portion for the male thread portion 47. The screwing position of the faucet socket 10 relative to the pipe extraction member 20 is fixed by fastening the feed seat 70 to the wall 2 from the mounting surface S side.

[0046] According to the above configuration, the seal ring 60 interposed between the cylindrical connection portion 41 of the faucet socket 10 and the piping extraction member 20 ensures stable sealing. Therefore, after the faucet socket 10 is screwed to the piping extraction member 20, the screwing position of the faucet socket 10 can be easily adjusted by turning the screw of the faucet socket 10 without causing a decrease in sealing. Furthermore, by tightening the feed seat 70 against the wall portion 2, the screwing position of the faucet socket 10 can be easily fixed in the aligned state. This makes it easy to install the faucet 1. In addition, the tightening of the feed seat 70 closes the gap between the female screw portion 46 and the male screw portion 47 that screw together, thereby suppressing rattling of the faucet socket 10. Furthermore, a seal tape or a sealant can be used in combination. This ensures higher sealing.

[0047] (2) A fitting groove 61 for a seal ring 60 is recessed into the inner peripheral surface 44 of the piping removal member 20. A smooth seal surface 62 against which the seal ring 60 abuts is provided on the outer peripheral surface 43 of the cylindrical connection part 41. The width W1 of this seal surface 62 along the axial direction of the cylindrical connection part 41 is set to be equal to or larger than the width W0 of the fitting groove 61 plus the axial length L1 of the cylindrical connection part 41 corresponding to one pitch of the male thread part 47.

[0048] That is, by disposing the seal ring 60 in the fitting groove 61, the disposition of the seal ring 60 can be stably maintained. Furthermore, the seal ring 60 can be secured to have a stable seal by being pressed against the smooth seal surface 62. Based on the width set for the seal surface 62, the screw-in position of the faucet socket 10 can be easily adjusted by turning the screw while securing a stable seal.

[0049] (3) The fitting groove 61 is provided at a position axially deeper than the female screw portion 46 . According to the above configuration, when the faucet socket 10 is screwed to the pipe removal member 20, the male thread portion 47 of the cylindrical connection portion 41 is unlikely to get caught on the seal ring 60. This makes it difficult for the seal ring 60 to be scratched, thereby ensuring its sealing performance and ensuring high reliability.

[0050] (4) The feed seat 70 has a fitting portion 74 on its outer periphery for a tool used to tighten the feed seat 70. This makes it easier to install the faucet 1, and also strengthens the tightening force of the feed seat 70, so that the screw-in position of the faucet socket 10 relative to the pipe extraction member 20 can be fixed more reliably.

[0051] (5) The faucet 1 includes a faucet body 11 having a first water inlet 13a and a second water inlet 13b, a first faucet socket 10a having a first faucet mounting portion 42a connected to the first water inlet 13a, and a second faucet socket 10b having a second faucet mounting portion 42b connected to the second water inlet 13b. Furthermore, when the faucet 1 is installed, the arrangement of the faucet mounting portion 42 provided on the faucet socket 10 is adjusted based on the screwing position of the faucet socket 10 relative to the piping extraction member 20. The process of adjusting the arrangement of the faucet mounting portion 42 includes a process of matching the distance D2 between the first and second faucet mounting portions 42a, 42b to the distance D0 between the first water inlet 13a and the second water inlet 13b provided on the faucet body 11.

[0052] According to the above configuration, the faucet 1 configured as a hot and cold water mixing faucet can be installed more easily. The above embodiment can be modified as follows: The above embodiment and the following modifications can be combined with each other to the extent that no technical contradiction occurs.

[0053] In the above embodiment, the faucet socket 10 has a crank-shaped external shape, but it may be applied to a faucet socket having a straight shape or other bent or curved shapes. Furthermore, the configuration of the faucet body 11 may also be changed as desired. As a result, it may be applied to a wall-mounted faucet having a configuration other than a hot and cold water mixing faucet.

[0054] In the above embodiment, the seal ring 60 is configured as an O-ring having a generally circular cross section, but a seal ring having another irregular cross section, such as a V-shaped cross section or an X-shaped cross section, may also be used.

[0055] In the above embodiment, the fitting groove 61 of the seal ring 60 is provided at an axial position on the inner surface 44 of the piping removal member 20 that is further back than the female thread portion 46, and the seal surface 62 is provided at an axial position on the outer surface 43 of the tubular connection portion 41 that is further forward than the male thread portion 47.

[0056] However, this is not limited to the above, and as shown in Figure 9, a fitting groove 61B of a seal ring 60 may be provided at an axial position on the outer peripheral surface 43B of the tubular connection portion 41B that is closer to the tip than the male thread portion 47, and a seal surface 62B may be provided at an axial position on the inner peripheral surface 44B of the piping extraction member 20B that is deeper than the female thread portion 46.

[0057] In the above embodiment, the axial tip side of the male screw portion 47 provided on the outer circumferential surface 43 of the cylindrical connection portion 41 constitutes the first male screw portion 47a that screws into the female screw portion 46 provided on the inner circumferential surface 44 of the piping removal member 20. The base end side of the male screw portion 47 constitutes the second male screw portion 47b to which the feed seat 70 is screwed. However, this is not limited to the above, and the first and second male screw portions 47a and 47b may be provided independently of each other. The shapes of the threads may also be set arbitrarily.

[0058] Incidentally, by adopting a configuration in which one male screw portion 47 is used for the first and second male screw portions 47a, 47b as in the above embodiment, it is possible to simplify the configuration. 10, a fitting groove 61C of a seal ring 60 may be provided in an inner peripheral surface 44C of the piping removal member 20C at an axial position closer to the proximal end than the female screw portion 46, and a seal surface 62C may be provided in an outer peripheral surface 43C of the cylindrical connection portion 41C at an axial position closer to the base end than the first male screw portion 47Ca. In this case, the seal surface 62C may be located in an axial position between the first and second male screw portions 47Ca, 47Cb that are provided independently and spaced apart in the axial direction of the cylindrical connection portion 41C.

[0059] 11, the fitting groove 61D of the seal ring 60 may be provided at an axial position on the base end side of the first male screw portion 47Da on the outer circumferential surface 43D of the cylindrical connection portion 41D, and the seal surface 62D may be provided at an axial position on the front side of the female screw portion 46 on the inner circumferential surface 44D of the pipe extraction member 20D. In this case, the fitting groove 61D may be disposed at an axial position between the first and second male screw portions 47Da and 47Db that are provided independently. Furthermore, by adopting such a configuration, when the faucet socket 10 is screwed to the pipe extraction member 20D, the seal ring 60 is unlikely to get caught on the female screw portion 46 of the pipe extraction member 20D. This makes it difficult for the seal ring 60 to be scratched, thereby ensuring its sealing performance and ensuring high reliability.

[0060] In the above embodiment, the piping extraction member 20 has a substantially L-shaped bent pipe shape, and is fixed to the wall portion 2 in a manner of being inserted into the mounting hole 25 from the rear side of the wall portion 2. However, the present invention is not limited to this, and the pipe shape of the piping extraction member 20 and the fixing structure to the wall portion 2 may be changed arbitrarily.

[0061] For example, another example of piping extraction member 20E shown in Fig. 12 has a straight tube-like outer shape. Moreover, this piping extraction member 20E has its second end 22 inserted into a mounting hole 25 of the wall 2 from the mounting surface S side. This piping extraction member 20E is configured to be fixed to the wall 2 from the mounting surface S side by using a mounting flange 24E protruding radially outward from its outer circumferential surface 23. Even if such a configuration is adopted, the same effect as the above embodiment can be obtained.

[0062] In the above embodiment, the feed seat 70 is fastened to the wall portion 2 via the fixed plate 28 with the axial end of the nut portion 72 constituting the screw portion for the male screw portion 47 abutting against the fixed plate 28. However, the present invention is not limited to this, and the feed seat 70 may be fastened to the wall portion 2 by directly abutting against the wall portion 2. The abutment portion with respect to the wall portion 2 may also be changed arbitrarily.

[0063] The feed seat 70 has a hexagonal fitting portion 74 provided on the outer periphery of the nut portion 72 that constitutes the screw portion. This allows the tightening operation to be performed using a tool that fits into the fitting portion 74. However, this is not limited to this, and the position where the fitting portion 74 is formed may be changed arbitrarily. The fitting portion 74 may also be changed arbitrarily, for example, to a two-face width shape, etc., in accordance with the tool used for tightening.

[0064] Next, the technical ideas that can be understood from the above embodiment and modified examples will be described. (i) A faucet comprising a faucet body having a first water inlet and a second water inlet, a first faucet socket having a first faucet mounting portion connected to the first water inlet, a second faucet socket having a second faucet mounting portion connected to the second water inlet, and a connection device for the faucet socket having the first piping outlet member to which the first faucet socket is screwed and the second piping outlet member to which the second faucet socket is screwed.

[0065] (b) The faucet comprises a faucet body having a first water inlet and a second water inlet, a first faucet socket having a first faucet mounting portion connected to the first water inlet, and a second faucet socket having a second faucet mounting portion connected to the second water inlet, and the step of adjusting the position of the faucet mounting portions includes a step of matching the spacing between the first and second faucet mounting portions to the spacing between the first water inlet and the second water inlet.

[0066] According to the above configuration, the installation of a faucet configured as a hot and cold water mixing faucet can be performed more easily. [Explanation of symbols]

[0067] 1...faucet, 2...wall portion, S...mounting surface, 3...piping, 10...faucet socket, 20...piping removal member, 41...cylindrical connection portion, 43...outer surface, 44...inner surface, 46...female thread portion, 47...male thread portion, 47a...first male thread portion, 47b...second male thread portion, 60...seal ring, 70...sliding seat, 72...nut portion (screwed portion), 80...connection device.

Claims

1. A faucet socket connection device having a cylindrical piping outlet member that connects the faucet socket to a piping arranged on the back side of the wall by screwing the faucet socket into the wall while being fixed to the wall, the device comprising: A seal ring is interposed between an inner peripheral surface of the pipe removal member having a female screw portion and an outer peripheral surface of a cylindrical connection portion provided on the faucet socket, the cylindrical connection portion having a first male screw portion that screws into the female screw portion; a feed seat having a nut portion that screws into a second male screw portion provided on an outer peripheral surface of the cylindrical connection portion and that fixes the screwing position of the water faucet socket relative to the piping removal member by being tightened against the wall portion from the mounting surface side; The pipe removal member includes a fixing plate on the mounting surface side, The feed seat is fastened to the wall portion via the fixing plate by the axial end of the nut portion abutting against the fixing plate.

2. A fitting groove for the seal ring is recessed on one side of an inner circumferential surface of the piping extraction member and an outer circumferential surface of the cylindrical connection portion, and a smooth seal surface against which the seal ring abuts is provided on the other side of the inner circumferential surface of the piping extraction member and the outer circumferential surface of the cylindrical connection portion, A faucet socket connection device as described in claim 1, wherein the width of the sealing surface along the axial direction of the tubular connection portion is greater than or equal to the width of the mating groove plus the axial length of the tubular connection portion corresponding to one pitch of the first male thread portion.

3. a fitting groove for the seal ring that is recessed at an axial position on the inner circumferential surface of the piping removal member that is deeper than the female screw portion, or at an axial position on the base end side of the first male screw portion on the outer circumferential surface of the cylindrical connection portion; 3. A faucet socket connecting device according to claim 1 or 2.

4. A fitting portion for a tool used for fastening the feed seat is provided on the outer periphery of the feed seat. A faucet socket connecting device according to any one of claims 1 to 3.

5. A faucet comprising the faucet socket connecting device according to any one of claims 1 to 4.

6. A method for installing a faucet using a cylindrical pipe outlet member that is fixed to a wall portion constituting a mounting surface of the faucet and that connects the faucet socket to a pipe arranged on the back side of the wall portion by screwing the faucet socket into the wall portion, The pipe removal member includes a fixing plate on the mounting surface side, a step of screwing the faucet socket to the piping removal member with a seal ring interposed between an inner peripheral surface of the piping removal member having a female screw portion and an outer peripheral surface of a cylindrical connection portion provided on the faucet socket, the cylindrical connection portion having a first male screw portion that screws into the female screw portion; a step of adjusting the position of the faucet mounting portion provided on the faucet socket by screwing the faucet socket in a state in which the seal ring watertightly seals between the outer peripheral surface of the cylindrical connecting portion and the inner peripheral surface of the piping removal member; a step of screwing a feed seat having a nut portion screwed into a second male screw portion provided on an outer peripheral surface of the cylindrical connection portion, and abutting an axial end of the nut portion against the fixing plate, thereby fastening the feed seat to the wall portion from the mounting surface side via the fixing plate, thereby fixing the screwing position of the faucet socket relative to the piping removal member; A method for installing a faucet having the above structure.

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