JPH09228435A - Joint box structure of faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and securely detect visually that water leaks and falls in drops from the side where a faucet is fitted, when water has leaked from a pipe in a joint box, particularly from a joint metal part which is apt to bring out water leakage and further, water has fallen in drops as the result from the water leakage. SOLUTION: In the joint box structure of a faucet, an opening 2 is provided on a wall face 1, the joint box 4 is arranged in the opening, the end of a water supply pipe 10 arranged on the rear face of the wall face 1 is exposed in the Joint box 4, the basal part of the faucet 26 protruded to the wall front face side la is connected to the end of the water supply pipe 10, and the opened part of the joint box 4 is shielded with a cover plate 18. In this time, a lower flange 5a extending downward is protruded at least at the lower end of the opened end of the joint box 4 and a vertically stretched drain groove 7 is provided on the surface of the lower flange 5a. The lower flange 5a of the joint box 4 is positioned at the periphery of the surface of the wall face opening 2 and the surface of joint box is shielded with the cover plate 18. A drain pass 23 connecting the inside of joint box 4 and the wall surface 1a through the drain groove 7 is provided between the rear face of the cover plate 18 and the lower flange 5a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a water faucet box for mounting a water faucet arranged on the indoor side of a wall surface on the wall surface.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional faucet box. The joint box 103 is provided with a frame-shaped flange portion 103 a at the opening, and the back surface 10 of the opening 102 of the wall surface 101.
The flange part 103a of the joint box 103 opening part is attached to the back inner material 104 such as wood provided on the side 1a with the wood screw 105.
... and so on. Wall surface 1 in the joint box 103
Water supply pipe (hot water supply pipe) 106 standing and arranged on the back side of 01
A lid in which the upper end portion of the joint box 103 is introduced, the connection fitting 107 is attached to the upper end portion of the joint fitting 103, the joint pipe 108 is projected from the connection fitting 107 to the wall surface side, and the open portion of the joint box 103 faces the surface of the wall surface 101. The faucet 110 is attached to the end of the joint pipe 108 which is covered with the plate 109 and protrudes from the cover plate 109.

[0003]

The above-mentioned conventional joint box 103 is attached and installed on the back surface 101a of the wall surface 101 via the flange portion 103a. on the other hand,
The faucet 110 and the water supply pipe 106 are joint boxes 1
There is a possibility that the following inconvenience may occur due to the connection via the connecting metal fitting 107 in the No. 03.

That is, a sealant, packing, liquid packing, etc. are provided between the connection fitting 107, the water supply pipe 106, and the joint pipe 108 to maintain watertightness, but the sealant, packing, etc. are aged. Deterioration or the like is unavoidable, and therefore, there is a risk that water leakage may occur at the connection fitting 107 portion during long-term use. Drip water generated by the water leakage is the joint box 10
3 in the joint box 103 from the wall surface 1
Water leaks along the back surface 101a of 01 to wet and stain the floor directly below the back surface of the wall surface, or the joint box 10
3 There is a risk that water drops may adhere to the equipment below and cause an accident such as failure of the equipment.

Since the above-mentioned water leakage occurs on the back side of the wall surface 101, it is difficult to detect it. Further, if the leak is left as it is without being noticed, the watertight structure of the connection fitting 107 may be damaged, and a large amount of leak may occur. Even if you change the packing, etc., or replace or repair the connection metal fittings in this situation, the water will be seriously leaked and a large amount of water will drip on the floor and equipment, so the floor and equipment Accidents such as breakdowns will increase.
In addition, there are inconveniences such as difficulty in repair and replacement of parts.

The present inventors have made the present invention in order to solve the above problems. When a faucet is installed on the surface of a wall surface, piping in a joint box, particularly a connecting metal fitting portion which is apt to cause water leakage. The present invention has been made so that, in the case of water leakage from the container, or water droplets based on the water leakage, the fact that there is water leakage or water droplets can be visually and easily detected from the side where the faucet is installed.

Therefore, the object of the present invention is to embed a joint box in a wall surface, and in a structure in which a fitting for connecting a faucet and a water supply pipe is housed and arranged in the joint box, a wall surface using the faucet is used. That is, there is provided a faucet joint box structure capable of early, easy, and reliable detection of water leaking from a room having a water faucet such as a connection fitting and the resulting water drop. Further, the object of the present invention is a faucet having the above simple structure, which can be realized at a low cost without adding a significant change to the conventional joint box structure and without adding a component. Provide joint box structure.

[0008]

In order to solve the above-mentioned problems, according to the present invention, in claim 1, an opening is provided in a wall surface, a joint box is arranged in the opening, and a wall surface is provided in the joint box. Faucet in which the end of the water supply pipe arranged on the rear side is exposed, the base of the water faucet projecting to the wall surface front side is connected to the end of the water supply pipe, and the opening of the joint box is closed with a lid plate. In the joint box structure of, at least the lower end portion of the open end portion of the joint box is provided with a lower flange portion that hangs downward, and the lower flange portion surface is provided with a drain groove that extends vertically.
The lower flange portion of the joint box faces the opening surface peripheral portion of the wall surface, covers the joint box surface with a lid plate, and the drain groove is provided between the lid plate rear surface and the lower flange portion. It is a faucet joint box structure that constitutes a drainage passage that connects the inside of the joint box and the wall surface.

According to another aspect of the present invention, the joint box is provided with a frame-shaped flange portion facing the front surface of the peripheral portion of the opening of the wall surface, and the drain groove is provided in the lower portion of the flange portion.

According to a third aspect of the present invention, the lid plate includes a surrounding frame portion projecting to the back surface, and a cutout portion matching the drainage groove of the flange portion is provided in a lower portion of the surrounding frame portion, The drainage passage is constituted by the cutout portion.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. 1 is a vertical side view showing a faucet box structure according to the present invention, FIG. 2 is an exploded perspective view of a joint box and a cover plate, FIG. 3 is a rear perspective view of the cover plate, FIG. 4 is a joint box and a cover plate. 5 is an enlarged vertical side view of the lower left-right intermediate portion, FIG. 5 is an explanatory exploded view showing the procedure for attaching the joint box and the cover plate to the wall surface, and FIG. 6 is a vertical side view thereof. FIG. 7 is an enlarged vertical side view of another embodiment of the present invention, FIG. 8 is an enlarged sectional view of an essential part of FIG. 7, and FIG. 9 is an explanatory view showing another embodiment of a joint box and a cover plate. FIG. 10 is a vertical cross-sectional side view showing a conventional joint box structure.

In FIGS. 1 and 5, reference numeral 1 denotes a wall surface composed of wall panels defining a predetermined room of a building, and a rectangular opening 2 extends from a front surface 1a to a rear surface 1b of the wall surface 1 at a predetermined portion thereof. It is provided to penetrate. A frame-like back inner member 3 made of wood or the like is fixed to the periphery of the back surface 1b of the opening 2 by adhesion or the like to reinforce the back surface side around the opening 2.

The joint box 4 is fitted in and attached to the opening 2. The joint box 4 is the main body 4
a is formed in a rectangular box shape with an open front surface, and is provided with a back plate 4b, upper and lower plates 4c and 4d, and left and right side plates 4e and 4e, and the front surface is open. The flange portion 5 is integrally or integrally provided so as to surround the end periphery so as to project outward.

The flange portion 5 is a plate 4b-4e of the main body 4a.
Is bent 90 ° from the open end of the flange and protrudes vertically and horizontally by a predetermined width. Mounting holes 6 ... Are shown in the four corners of the flange portion 5 and in the middle portion in the height direction of the left and right vertically elongated flange portions. Then, 6 pieces are provided for convenience. A drain groove 7 is vertically installed at an intermediate portion of the lower flange portion 5a of the flange portion 5 in the left-right direction from the front end portion of the lower plate 4d which is the upper end portion thereof to the lower end portion of the flange portion 5a.

In the drainage groove 7, the upper end portion 7a is continuous with the front end portion of the lower plate 4d, and the lower end portion 7b is opened to the lower end portion of the lower flange portion 5a, and the front end portion of the lower plate 4d is inserted through the drainage groove 7. The upper surface and the lower part of the lower flange portion 5a are set to communicate with each other. A vertical through hole 8 for a water supply pipe (hot water supply pipe) is provided in the middle portion of the lower plate 4d in the left-right direction and near the rear portion in the front-rear direction.
An enlarged vertical side view of the drainage groove 7 is shown in the right side of FIG.

The above joint box 4 is fitted into the opening 2 of the wall surface 1 from the front surface 1a side. The state before the insertion is shown in FIG. 5, the flange 5 is brought into contact with the wall surface 1a around the opening 2, and the wood screws 9 ... Are attached to the mounting hole 6 of the flange 5.
, The flange portion 5 is screwed to the surface 1a around the opening 2 of the wall surface 1 to fix the joint box 4 to the surface 1a of the wall surface 1. Therefore, the joint box 4
The flange portion 5 faces the surface 1a of the wall surface 1 and is attached and supported.

The body 4a of the joint box 4 described above
As shown in FIG. 1, the upper portion of the water supply pipe (hot water supply pipe) 10 that projects to the back surface 1b of the wall surface 1 and further to the back side of the back inner material 3 and is piped to the back side of the wall surface 1 in the vertical through hole 8 of the lower plate 4d. Pass 10a vertically. The vertical through hole 8 of the water supply pipe 10 is provided with the mounting brackets 11, 1
The upper and lower parts are sandwiched by 2, and this part is fixed to the lower plate 4d.

The upper end 10a of the water supply pipe 10 which faces the joint box 4 is connected to the lower part of an elbow-shaped connection pipe 14 via a connection fitting 13 to form an elbow-shaped connection pipe 1.
4 is a back plate 4 of the joint box body 4a in the illustrated example.
It was supported by a bracket 15 provided on the upper part of b. Connection pipe 1
The rear end portion of the joint pipe 17 is connected to the substantially horizontal tip portion of 4 via the connection fitting 16, and the joint pipe 17 is disposed substantially horizontally, and the middle portion to the front portion of the main body 4a are opened. A predetermined length projects from the end 4f to the wall surface 1a.

The open end 4 of the joint box 4 described above
f and the front surface of the flange portion 5 are covered with the cover plate 18. Lid plate 1
As shown in FIGS. 2 and 3, the main body 18a has a flat rectangular plate shape, and a through hole 19 through which the above-mentioned joint pipe 17 is inserted is bored in the upper middle portion in the left-right direction. Further, a surrounding frame portion 20 bent to the back side is provided around the entire circumference of the main body 18a.

The depth dimension of the surrounding frame portion 20 is set to be equal to or slightly larger than the plate thickness of the flange portion 5 of the joint box 4 described above. The lower piece portion 20a of the surrounding frame portion 20 described above
A U-shaped cutout 21 in a plan view is provided in the left-right intermediate portion of the cutout 21, and the cutout 21 is open to the rear end of the lower piece 20a. An enlarged vertical side view of the cutout 21 is shown on the left side of FIG.
Further, mounting holes 22 and 22 concentric with the mounting holes 6 and 6 provided on the left and right of the lower flange portion 5a of the flange portion 5 of the joint box 4 are provided on the left and right lower portions of the main body 18a of the lid plate 18.

The cover plate 18 is so constructed that its surrounding frame portion 20 surrounds the outer periphery of the flange portion 5 of the joint box 4.
The mounting holes 2 are set so that the rear end of the surrounding frame portion 20 abuts on the surface 1a of the wall surface 1 and is provided on the lower left and right sides of the main body 18a.
The wood screws 9 are passed through 2, 22 and the wood screws 9 are passed through the left and right mounting holes 6, 6 of the lower flange portion 5a.
A and the lid plate body 18a are fastened together and fixed to the lower side of the opening 2 of the surface 1a of the wall surface 1.

In the above, the rear surface of the lower middle portion of the lid plate main body 18a is flatly faced to the front surface of the drain groove 7 formed in the lower flange portion 5 of the joint box 4 facing the surface 1a of the wall surface 1, 7 and lid plate body 18 on the front
The drainage passage 23 will be vertically formed between it and a. The drainage passage 23 is the main body 4 a of the joint box 4.
The cover plate 18 is provided so as to vertically communicate the upper surface of the lower plate 4d and the lower flange portion 5a facing the surface 1a of the wall surface 1, that is, the wall surface 1a, and closes the lower end portion of the lower flange portion 5a. The cutout portion 21 provided in the middle portion of the lower piece portion 20a of the frame portion 20 faces directly below the drainage passage 23.

Therefore, the lower end portion of the drainage passage 23 is not covered with the lower piece portion 20a of the surrounding frame portion 20 and communicates with the wall surface side space below the lid plate 18 through the notch 21, and the drainage passage 23 is formed.
The inside of the joint box 4 and the wall surface 1a communicate with each other by the notch 21. This state is shown in FIGS.
Indicated by

The front and rear direction intermediate portion of the joint pipe 17 arranged in the joint box 4 is loosely engaged with the through hole 19 provided in the upper portion of the main body 18a of the lid plate 18 and the front portion 17a is formed.
Protrude outside the lid plate 18. The through hole 19 has a large diameter with respect to the joint pipe 17, and the cylindrical nut 24 that fits tightly into the through hole 19 is fitted into the through hole 19 from the outside, and the male screw portion 16a formed around the connection metal fitting 16 is formed. The connection fitting 16 is supported on the cover plate 18 by screwing.

Further, a ring-shaped cap 25 is fitted around the tip portion 17a of the joint pipe 17 protruding from the outer surface of the cover plate 18 to cover the joint pipe 17 and the outer periphery of the tubular nut 23 for makeup. The proximal end of the main body 26a of the water faucet 26 is coupled to the distal end portion of the joint pipe 17 protruding from the outer surface of the lid plate 18, and the water faucet 26 is a spout 26b which is a water discharge portion, and a handle knob 26c is provided on the upper portion. Equipped with.

In the above, water leakage occurs between the water supply pipe 10 arranged in the joint box 4, the joint pipe 17, the elbow-shaped connecting pipe 14 connecting these, the connecting fitting 13 connecting these, and the connecting fitting 16. It may occur. The leaked water becomes dripping water and drips on the lower plate 4d of the joint box 4. The dropped water drops evaporate temporarily when the amount is small, but when there is continuous drop water, the dropped water is collected on the lower plate 4d.

Such dripping water flows on the lower plate 4d, reaches the front portion, and reaches the upper end portion 7a of the drainage groove 7 which is vertically provided at the intermediate portion in the left-right direction of the lower flange portion 5a at the front end portion. The drip water flows down the drainage passage 23 formed between the drainage groove 7 and the lower portion of the lid plate 18 that closes the front surface of the drainage groove 7, and flows down.
At the bottom of the drainage passage 23, the lower portion 20a of the surrounding frame portion 20 of the lid plate 18
However, since the notch 21 as described above is provided in the lower portion of the drainage groove 7, the lower portion of the drainage passage 23 is not blocked, and the drip water flowing down the drainage passage 23 is not covered by the cutout portion 2.
It will fall downward from 1.

The leaked water generated in the joint box 4 becomes drop water in this way and is dripped from the lower end portion of the lid plate 18 which closes the wall surface of the joint box 4, and therefore,
The drip water travels along the surface of the wall surface below the faucet 26 and wets this surface, or wets the floor surface immediately below. Therefore, the water droplets caused by the water leakage generated in the joint box 4 can be immediately found by visually observing the water droplets that have dropped along the wall surface near the faucet, the water droplets, and the water droplets on the floor.

As described above, by visually observing the water drop and the wetness on the wall surface and the water drop and the wetness on the floor, the water leak and the water drop generated in the joint box 4 can be identified, and the water leak can be confirmed by opening the joint box 4. It is possible to detect a failure of the connecting fittings in the joint box at an early stage.

For this reason, before a major failure or major accident is detected, a major failure or major accident such as noticing a water leak and noticing a water leakage accident only when a large amount of water flows due to a large failure of the metal fittings or the like is detected. In addition, it is possible to detect a water leakage accident that has occurred in the joint box 4 in advance and take effective measures in advance, such as repair or replacement of parts.

In order to detect the above-mentioned drip water at an early stage,
For example, by making the lower plate 4d in the joint box 4 have a downward slope toward the open portion, the flow of the drip water toward the drain groove 23 can be promoted, and the water can be drained early. Although the lower plate 4d is shown horizontally in the figure, the drainage groove 7
A downward slope may be added in the direction.

FIG. 7 shows another embodiment of the present invention. Since the basic structure is the same as that of the above-described embodiment, the same parts are designated by the same reference numerals and detailed description thereof will be omitted. A tubular seal member 30 made of rubber or the like is fitted around the lower half portion of the vertically oriented upper portion 10a arranged in the joint box 4 of the water supply pipe 10.

The seal member 30 is shown in an enlarged sectional view in FIG. 8. The upper half portion 30a has a small diameter, and the inner diameter portion 30b of the seal member 30 is in close contact with the periphery of the water supply pipe upper portion 10a.
It is configured to guide the water droplets transmitted through a to the outer periphery of the seal member 30. The lower half portion 30c of the seal member 30 has a skirt-like shape with its diameter enlarged downward.

A cylindrical holder 31 made of resin or the like is arranged around the lower part of the water supply pipe upper part 10a so as to be loosely fitted,
The holder 31 has a small diameter at the top and a large diameter at the bottom. The upper end 31a of the upper portion 31a of the holder 31 is fitted around the upper end 31b so that the lower end inner diameter portion 30d of the seal member 30 arranged above is closely attached, and the lower end portion of the holder 31 is provided with a screw portion 31c. Is screwed into the screw portion 8a formed on the inner diameter portion of the vertical hole 8 to connect the holder 31 to the lower plate 4d.

By the way, when the holder 31 is screwed into the vertical hole 8 of the lower plate 4d, an annular concave step portion 31d is provided radially inward on the lower outer periphery of the holder 31, and the outer peripheral surface of the concave step portion 31d is provided. The packing 32 is interposed, the vertical through hole 8 and the lower plate 4
The space between d is sealed watertight. As a result, the circumference of the vertical hole 8 provided for vertically passing the water supply pipe 10 in the lower plate 4d is sealed in a watertight manner, and the vertical direction of the leakage of the water dropped from the upper portion 10a of the water supply pipe 10 onto the lower plate 4d of the joint box 4 is achieved. Water leakage to the outside through the through hole 8 is prevented.

Further, the mounting bracket 1 below the vertical through hole 8 of the water supply pipe 10.
A packing 33 is interposed between the 2 and the lower plate 4d. Further, in this embodiment, the packing 34 is interposed between the flange portion 5 provided around the front end portion of the main body 4a of the joint box 4 and the surface 1a around the opening 2 of the wall surface 1.

FIG. 9 shows another embodiment of the joint box 4. Since the basic structure of the joint box of this embodiment is the same as that described above, the same parts are designated by the same reference numerals, and detailed description thereof will be omitted. In this embodiment, the joint box 4
An example is shown in which two pipes of a water supply pipe and a hot water supply pipe are accommodated in the interior of the joint box 4. Therefore, the lower plate 4d of the main body 4a of the joint box 4 has a longitudinal pipe through which two pipes of the water supply pipe and the hot water supply pipe are passed. The holes 38, 38 are provided, and the through holes of the cover plate 18 are arranged side by side as two left and right 39, 39 so as to correspond to the vertical through holes 38, 38.

[0038]

The present invention has the following effects due to the above configuration. In Claim 1, an opening is provided in the wall surface, a joint box is arranged in the opening, and the water supply pipe end portion arranged on the back surface side of the wall surface is exposed in the joint box.
In a joint box structure of a faucet in which a base portion of a faucet projecting to a wall surface side is connected to an end portion of the water supply pipe, and an opening portion of the joint box is closed with a cover plate, at least an open end portion of the joint box is provided. A lower flange portion that hangs downward is provided on the lower end portion, and a drain groove that extends vertically is provided on the surface of the lower flange portion, and the lower flange portion of the joint box is the opening surface of the wall surface. While facing the peripheral part, the joint box surface is covered with a cover plate, and a drainage channel is formed between the rear surface of the cover plate and the lower flange part to connect the inside of the joint box and the wall surface by a drainage groove. As a result, water leaks from the connection fittings placed inside the joint box and the connection with the piping will drip on the bottom of the joint box, and the drip water that has dripped will fall on the bottom. The water flows down from the drainage passage and wets or stains the wall surface or floor directly under the faucet, so it can be easily visually checked, and any leaks or drips that occur in the joint box can be found early. You can

Therefore, it is possible to easily detect the water leak and the drop water in the joint box by visual observation, such as the wetting and dirt of the wall surface and the floor directly under the faucet, and thus the failure or accident such as a large amount of water leak can be detected in advance. Therefore, it is possible to easily, reliably, and easily find a major failure or water leakage accident in the joint box that has often occurred in the past due to missed water leakage or dripping water inside the joint box. Necessary repairs and parts replacements can be made early before reaching.

Further, according to the present invention, the joint box is provided with a flange portion, the lower flange portion is exposed to the wall surface, the drain groove is vertically provided in the lower flange portion connected to the bottom of the joint box, and the lid for covering the joint box opening portion is covered. Since the structure has a drainage passage that connects the inside of the joint box and the wall surface below the lower flange between the lower part of the plate, it is possible to obtain the above-mentioned effects without adding parts or making major changes to the joint box structure. Therefore, it is possible to obtain a faucet joint box structure that has a simple structure and can detect water leakage and drip water at an early stage without increasing the cost.

In the second aspect of the present invention, the joint box is provided with a frame-shaped flange portion facing the front surface of the peripheral portion of the opening portion of the wall surface, and the drainage groove is vertically provided under the flange portion. Since the drainage groove is provided in a part of the flange part where the joint box is installed on the peripheral surface of the wall surface opening part, it is sufficient to form a vertical groove in a part of the flange part. It is possible to form a drainage groove for detecting water leaks and drip water while also attaching the joint box.

According to a third aspect of the present invention, the lid plate is provided with a surrounding frame portion projecting to the back surface, and a notch portion matching the drainage groove of the flange portion of the joint box is provided in the lower portion of the surrounding frame portion. Since the drainage passage is configured with the part, the entire open part of the joint box and the peripheral part of the flange part are closed with the surrounding frame part of the lid plate, and even if makeup is applied, a drainage groove for detecting water leakage and drip water will be provided. It can be formed, and leakage of water, discharge of drip water, and detection can be guaranteed without impairing the appearance. Further, since the above is merely provided in the lower portion of the surrounding frame portion of the lid plate, the notch portion corresponding to the drainage groove provided in the lower flange portion of the joint box, the above-described effect can be achieved with a simple structure.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a faucet box structure according to the present invention.

FIG. 2 is an exploded perspective view of a joint box and a cover plate.

FIG. 3 is a rear perspective view of the cover plate.

FIG. 4 is an enlarged vertical cross-sectional side view of a joint box and a middle portion in the left-right direction of a lower portion of the lid plate.

FIG. 5 is an explanatory exploded view showing a procedure for attaching the joint box and the cover plate to the wall surface, which is a vertical sectional side view.

FIG. 6 is an enlarged vertical side view of the main part of FIG.

FIG. 7 is a vertical sectional side view of another embodiment of the present invention.

8 is an enlarged cross-sectional view of the main part of FIG.

FIG. 9 is an explanatory exploded perspective view showing another embodiment of the joint box and the cover plate.

FIG. 10 is a vertical sectional side view showing a conventional joint box structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wall surface, 1a ... Front surface side of wall surface, 1b ... Back surface side of wall surface, 2 ... Opening part, 4 ... Joint box, 4f ...
Opening part, 5 ... Flange part, 5a ... Lower flange part,
7 ... Drainage groove, 18 ... Lid plate, 20 ... Enclosing frame part, 21
... Missing part, 23 ... Drainage passage, 26 ... Faucet.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Matsuo 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Shuji Komatsu 2 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka 1st-1st Totoki Co., Ltd. (72) Inventor Kazuya Kokubun 2-11-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture 72nd Totoki Co., Ltd. (72) Inventor Yoshihiro Nishikawa Kitakyushu, Fukuoka 2-1-1 Nakajima, Kokurakita-ku, Tochi, Ltd. In Totoki Co., Ltd. (72) Inventor Takaharu Miyauchi 147-7 Kozukue-cho, Kohoku-ku, Yokohama-shi, Kanagawa Miyauchi Equipment Co., Ltd.

Claims (3)

[Claims] 1. An opening is provided in a wall surface, a joint box is arranged in the opening, a water supply pipe end arranged on the back side of the wall surface is exposed in the joint box, and the water supply pipe end is provided with a wall surface. In the joint box structure of the faucet, in which the base of the faucet protruding to the front surface side is connected, and the opening of the joint box is closed with a cover plate, at least the lower end of the open end of the joint box is A downwardly extending lower flange portion is provided, and a drain groove vertically extending in the vertical direction is provided on the surface of the lower flange portion, and the lower flange portion of the joint box faces the periphery of the opening surface of the wall surface. In addition, the surface of the joint box is covered with a lid plate, and a drainage channel connecting the inside of the joint box and the wall surface is formed between the back surface of the lid plate and the lower flange portion by the drainage groove. Faucet joint box structure characterized by the, possible to constitute the. 2. The joint box includes a frame-shaped flange portion facing the front surface of the peripheral portion of the opening of the wall surface,
The faucet joint box structure according to claim 1, wherein the drainage groove is vertically provided at a lower portion of the flange portion. 3. The lid plate includes an enclosing frame portion projecting to the back surface, and a notch portion matching the drainage groove of the flange portion is provided at a lower portion of the enclosing frame portion. The faucet joint box structure according to claim 2, wherein the drainage passage is configured.