JP4363222B2 - Piping structure of startup pipe - Google Patents

Description

  The present invention relates to a piping structure of a start-up pipe, and more particularly to a piping structure when a hot water pipe piped on the back of a wall of a unit bath is drawn into a room.

  Conventionally, as this type of structure, for example, there is one described in Patent Document 1. In this conventional structure, an opening having a predetermined dimension is formed in the wall panel, and a pipe fixture having a plurality of pipe joints is arranged on the back side of the panel main body, and a hole through which the joint part of the pipe joint can be seen on the bathroom side. The formed opening cover is arranged, and the pipe fixing tool and the opening cover are fixed with the wall panel interposed therebetween.

Conventionally, as in this conventional example, piping equipment for hot water in a unit bath or the like has a plurality of pipes on the back of the wall (for example, a water supply pipe, a hot water supply pipe, a hot water supply / exit pipe connected to a boiler). It is customary to be piped. Then, a joint is connected to the plurality of pipes, and the joint is drawn into the bathroom through a cover (cover) of a notch window (opening) formed in the wall, and connected to the pipe on the bathroom side. .
JP 2003-268820 A

Therefore, this type of wall piping is performed by the waterworks contractor before the construction of the unit bath, but when the pipes are set up, it is difficult to accurately position the upper ends of all the pipes. In general, there are deviations in orientation, front and rear, and left and right positions.
Therefore, conventionally, there has been a problem that it is inconvenient to pass the through hole of the lid through the joint at the upper end of the rising pipe and fix the lid to the wall, and this type of work takes time and effort. Conventionally, since the work of connecting the start pipe and the water stop work depended on the type of the start pipe and the pipe diameter, the water stop performance largely depends on the skill level of the worker, and the water stop performance is always at the same level. It was difficult to secure. Also, in the past, once the lid was fixed to the wall, it was not possible to easily check the screwed locations of the joints, etc., so there was a problem that the maintenance performance of the unit bath was reduced, and the joints on the back of the wall When a part leaks, there is a problem that water leaks out and wets the back of the wall.

The present invention has been proposed in view of such problems of the prior art.
Therefore, the technical problem to be solved by the present invention is that water can be reliably stopped without being influenced by the pipe diameter or the like of the rising pipe, and piping work can be performed easily and reliably even if the position of the upper end is incorrect. It is possible to provide a piping structure for the start-up pipe that can be easily confirmed after the construction and the water leakage point on the back side of the wall is prevented so that even if water leaks, the water is not led to the bathroom side and wetted on the back side. It is in.

The present invention employs the following technical means in order to solve the above problems.
That is, according to the present invention, as shown in FIG. 1 and the like, a hot water pipe 2 is raised on the back side of the wall 1, and an elbow 3 is connected to the upper end of the rising pipe 2 with the tip portion facing the wall 1. A notch window 4 is formed at the position of the wall 1 corresponding to the tip of the elbow 3, and the riser pipe 2 is drawn into the room through a lid 5 that closes the notch window 4. The adapter 7 having a male threaded portion 7a on the outer peripheral surface is passed through the through hole 8 formed in the lid 5, and the male threaded portion 7a is disposed in the room to Connected to the tip of the elbow 3, a nut 11 is screwed into the male thread 7 a of the adapter 7 from the inside of the room, and the lid 5 is sandwiched between the nut 11 and the flange 3 a of the elbow 3 in a watertight manner. The lid 5 is formed in a telescopic shape, and the position of the through hole 8 is set to the tip of the elbow 3 Characterized in that it is finely adjusted freely formed in accordance with the position (Claim 1).

  In the case of the present invention, the adapter 7 has an indoor pipe connected to the front end thereof, and the water stop at the position of the through hole 8 through which the adapter 7 is passed is sandwiched between the nut 11 and the elbow. This is realized by appropriately interposing a flat washer 9, a packing 10 and the like between the three flange portions 3a. The material of the lid 5 is preferably a flexible or soft material such as a rubber material or a synthetic resin material. In the case of the present invention, the stretchability of the lid 5 is realized mechanically or mechanically by the bellows-like portion 5a as described later, or by taking advantage of the properties of the material itself such as a rubber material forming the lid 5. Is done.

In this case, in the present invention, instead of the adapter 7 having the male screw portion 7a, as shown in FIG. 10, a flange 71 is formed on the outer peripheral surface, and a screw-in hole 72 extending along the axis of the flange 71 is formed. Are inserted at equal intervals in the circumferential direction of the flange 71, and a set screw 15 is screwed into the screw-in hole 72 from the inside of the room, and the lid 5 is watertight on the flange portion 3 a of the elbow 3 with the set screw 15. (Claim 2).
Also in this case, the set screw 15 can prevent water leakage between the adapter 7 and the lid 5 as in the case of the nut 11.

Further, according to the present invention, the portion 5b of the lid 5 around the through hole 8 to which the tightening force of the nut 11 or the set screw 15 is applied and the peripheral portion 5c of the lid 5 in contact with the wall 1 are harder than the other portions 5d. (Claim 3), or thicker than other parts 5d (Claim 4).
This is because, according to this, the strength of the water stop points 5b and 5c is increased, and even when a large tightening force is applied, it is difficult to be deformed and the water tightness can be further improved.

Further, in the present invention according to any one of claims 1 to 4, it is preferable that the lid 5 is provided with a bellows-like portion 5a surrounding the through hole 8 so as to be stretchable (claim 5).
This is because the position of the through-hole 8 can be moved in a well-balanced manner from front to back, left and right, and up and down, the piping operation is facilitated, and the cover 5 can be attached to the wall 1 and the cutout window 4 can be closed without difficulty. .

Further, in the present invention according to any one of claims 1 to 5, a frame-shaped lid retainer 12 having the same outer shape as the lid 5 is applied to the peripheral portion 5c of the lid 5 from the indoor side. 5 is preferably fixed to the wall 1 (Claim 6).
This is because the peripheral portion 5c of the lid 5 can be uniformly adhered to the wall 1 according to this, and the watertightness between the lid 5 and the wall 1 can be further improved.

The present invention uses the flange portion of the elbow as a water stop portion in this way, and stops water by tightening a nut from the indoor side to the male screw portion of the adapter. Therefore, according to this, a reliable water stop treatment can be performed without being affected by various pipe types and pipe diameters of the riser pipe, and the water stop performance can be improved.
In the present invention, the lid is formed in a telescopic shape so that the position of the through hole can be finely adjusted. Therefore, according to this, even if the position of the tip of the elbow connected to the riser tube is slightly out of order (up and down, up and down, left and right, or orientation) (see dotted line state in Fig. 5), it can flexibly follow. And piping work can be facilitated.
Further, according to the present invention, since the lid is formed in a stretchable shape, the lid can be turned even after the lid is tightened with a nut. Therefore, according to this, at the time of water leakage inspection of the unit bath under construction, the screwed portion can be confirmed visually and by hand, and this type of inspection work can be easily performed with high performance. Moreover, since it is possible to visually check the screwed location or after touching it, it is possible to improve the maintenance performance of the unit bath.
In addition, the present invention is, for example, inadequate screwing of the adapter, and even if water leaks from the connection point with the elbow, the location of the through-hole of the lid is sufficient as long as the nut is firmly tightened to the flange portion of the elbow through the lid. Therefore, the above water leakage does not leak out. Therefore, according to this, since the water leakage can be guided to the indoor side of the unit bath and drained from the waterproof pan, the water leakage prevention performance of the unit bath can be improved.

Hereinafter, the best mode for carrying out the present invention will be described.
In the piping structure of the present invention, as shown in FIG. 1 and the like, a hot water pipe 2 is raised on the back side of the wall 1, and an elbow 3 is directed to the wall 1 at the upper end of the rising pipe 2. It is connected. In this embodiment, a rectangular cutout window 4 is opened in a laterally long state at the position of the wall 1 corresponding to the tip of the elbow 3, and the above-described start-up is performed via a lid 5 that closes the cutout window 4. The tube 2 is drawn into the room. In addition, 6 is a waterproof pan, and the wall 1 is mounted on the wall mounting portion 6a of the waterproof pan 6 and provided vertically.

  Reference numeral 7 denotes an adapter having an external thread 7a on the outer peripheral surface. The adapter 7 is passed through a through hole 8 formed in the lid 5 and is connected to the tip of the elbow 3 with a male screw portion 7a disposed in the room. The rear end portion of the adapter 7 is formed in a male screw shape so that it can be screwed into the elbow 3. The cylindrical position on the rear side of the male screw portion 7 a is such that the flat washer 9 and the packing 10 are in the axial direction of the adapter 7. It is formed so that the diameter thereof is slightly smaller than the inner diameter of these components. Further, a hexagonal portion 7b for engaging a spanner or the like is formed on the front side of the male screw portion 7a of the adapter 7, and the indoor piping is watertight at the position of the front end of the adapter 7 in front of the hexagonal portion 7b. To be connected.

  Reference numeral 11 denotes a hexagon nut screwed into the male screw portion 7a of the adapter 7 from the room side. The nut 11 is formed to have a width and thickness so that the length of the female screw is increased, and when the adapter 7 is screwed into the tip of the elbow 3, the nut 11 can be flexibly adapted even if there is a difference in screwing amount. ing.

  The lid 5 is clamped between the nut 11 and the flange portion 3 a of the elbow 3 by tightening the nut 11, and is fixed to the wall 1 by the lid presser 12 with a screw 13. Thereby, the inside and outside of the unit bath are stopped. In this embodiment, the flat washer 9 and the packing 10 that is pressed against the flange 3 a of the elbow 3 by the flat washer 9 are provided between the lid 5 and the flange 3 a of the elbow 3. Further, a sliding plate 14 is provided between the lid 5 and the nut 11 to prevent rotation when the nut 11 is tightened and the lid 5 is pressed.

  The lid 5 is formed in a stretchable manner so that the position of the through hole 8 can be finely adjusted. Specifically, the lid 5 is made of a soft material such as rubber, an elastomer, or a soft vinyl chloride resin, and is provided with a bellows-like portion 5a surrounding the through hole 8 so as to be stretchable. In this embodiment, as shown in FIGS. 3 and 5, the through-hole 8 extends from the left side to the center of the lid 5 in the longitudinal direction, for the hot water supply pipe, for the water supply pipe, for the reheating water discharge pipe, for reheating A total of four are formed for the inlet pipe. In this embodiment, as shown in FIG. 3, the bellows-like portion 5a includes a circular portion 5a1 concentrically formed with each through hole 8, two left through holes 8, and two right through holes. An oval part 5a2 that individually surrounds the hole 8 and a large oval part 5a3 that is elongated in the left-right direction so as to surround the entire four through holes 8 in the left-right direction; It is formed so that it can be moved in a well-balanced manner up and down, left and right, and front and back.

  The portion 5b of the lid 5 around the through hole 8 to which the tightening force of the nut 11 is applied and the peripheral portion 5c of the lid 5 are formed to be harder and thicker than the other portion 5d in this embodiment. Therefore, the expansion / contraction operation when the position of the through hole 8 is moved is absorbed by the bellows-like portion 5a and the other thin-walled portion 5d that can be bent around the bellows-like portion 5a. 5c is formed so as not to be affected by the fine adjustment operation of the through hole 8. In addition, in the outer peripheral part of the lid | cover 5, it is returned to the indoor side so that the outer peripheral part of the lid | cover holding | suppressing 12 may fit, and the return | return 5e of cross-sectional right angle shape is formed. 5f is a screw hole formed in the peripheral portion 5c with an appropriate interval.

  As shown in FIG. 4, the lid presser 12 is formed in a rectangular shape whose outer shape is the same as that of the lid 5 and whose size is slightly smaller than that of the lid 5. In the periphery, a screw-through hole 12a is formed at a position corresponding to the screw hole 5f of the lid 5, and a rising edge 12b is formed at the outer peripheral portion for maintaining strength. As shown in FIG. 1 and the like, the lid retainer 12 is applied to the peripheral portion 5 c of the lid 5 from the indoor side, and is fixed to the wall 1 together with the lid 5 by screws 13. Even if the lid 5 is pulled by the lid presser 12 when it is attached to the wall 1, the lid 5 is fixed without causing the peripheral portion 5c.

Next, the piping work procedure of this invention is demonstrated according to FIG.
First, the pipe 2 for hot and cold water is raised up to the back side of the wall 1 by an equipment supplier, and an elbow 3 is attached to the upper end thereof (see FIG. 2A). Unit bus construction is performed in this state. When constructing the unit bath, the worker first installs the waterproof pan 6. Next, the flat washer 9 and the packing 10 are inserted from the rear end of the adapter 7, the male screw-like rear end of the adapter 7 is screwed into the elbow 3, and the adapter 7 is connected to the tip of the elbow 3 (see FIG. 2B). Next, the worker installs the wall 1 vertically on the wall mounting portion 6 a of the waterproof pan 6. And the through-hole 8 of the lid | cover 5 is inserted from the front end of the adapter 7, and the lid | cover 5 is set to the adapter 7 (refer FIG. 2C). Then, the operator inserts the sliding plate 14 from the front end of the adapter 7, then screws the nut 11 into the male screw portion 7 a from the indoor side, presses the lid 5 against the flange portion 3 a of the elbow 3, and this portion is watertight. (See FIG. 2D). After that, the operator places the lid retainer 12 on the peripheral portion 5c of the lid 5, fixes the lid 5 to the wall 1 with the screw 13, and stops the gap between the lid 5 and the wall 1 (state of FIG. 1). reference).

In the above place, the cutout window 4 is usually formed in the wall 1 such as a side wall panel or a waist panel, but the present invention is not limited to this. It may be formed on a rising wall.
In the above-described embodiment, the hot water pipe, the water supply pipe, the additional water discharge pipe, and the additional water intake pipe are passed through one lid 5, but the present invention is, for example, a hot water supply pipe, a water supply pipe, The notch window 4 may be appropriately formed in the wall 1 for each type of the pipe 2 such that each of the water outlet pipe and the water inlet pipe passes through one lid 5. In this case, there is an advantage that it is possible to flexibly cope with piping variations.

  In the case of the present invention, the lid 5 may be a rubber plate or the like if it is formed so that it can be finely adjusted by moving the position of the through-hole 8 back and forth, right and left and up and down according to the position of the tip of the elbow 3. The rubber sheet and the soft synthetic resin sheet may be formed to be stretchable in a bent state. Further, in the above example, the portion 5b around the through hole 8 and the peripheral portion 5c are formed to be hard and thick, but the present invention is not limited to this, and the water stop portions 5b, 5c may be simply formed thick.

Further, as shown in FIG. 7, the adapter 7 may be configured such that the male screw portion 7 a is formed with a flat portion 7 c serving as a grip margin at the opposite position, and the hexagonal portion 7 b is omitted. . In addition, as shown in FIG. 8, the adapter 7 may be formed such that, for example, a male screw portion 7a is extended to the front end, and an indoor pipe can be screwed to the front end, and its specification is arbitrary.
Further, in the case of the present invention, the water stop at the position of the through hole 8 is provided with a flat washer 9 between the nut 11 and the lid 5, for example, as shown in FIG. 9, and the flange 5 a of the lid 5 and the elbow 3. It is also possible to carry out by directly contacting and closely contacting.

  In the present invention, the adapter 7 may be formed as shown in FIG. 10 instead of having the male screw portion 7a. The same parts as those in the above example are denoted by the same reference numerals. That is, the adapter 7 of this embodiment has a flange 71 formed on the outer peripheral surface, and a plurality of screw-in holes 72 extending along the axial center are penetrated through the flange 71 at equal intervals in the circumferential direction of the flange 71. In the present invention, the set screw 15 is screwed into the screw-in hole 72 from the inside of the room, and the lid 5 is pressure-bonded to the flange portion 3a of the elbow 3 by this set screw 15 to stop water. In the case of this embodiment, a total of four screw holes 72 are formed in the flange 71 by opening 90 degrees in the circumferential direction. Further, a flat washer 9 is provided in a pair of front and rear sides with the lid 5 interposed therebetween. A packing 10 is provided between the rear plain washer 9 and the flange 3 a of the elbow 3. In the case of the present invention, leakage of water at the position of the through hole 8 is prevented by tightening the set screw 15 from the indoor side as in the case of the nut 11 in the above example.

It is a principal part longitudinal cross-sectional view which shows suitable one Embodiment of the piping structure of this invention. The work procedure of a piping structure same as the above is shown, and AD is a principal part sectional drawing. A is a front view of the lid, B is a cross-sectional view taken along line B-B of A, and C is a cross-sectional view taken along line C-C of A. A is a front view of the cover, and B is a cross-sectional view taken along line BB of A. FIG. It is the principal part front view which notched a part of structure of this invention. An adapter is shown, A is a front view, B is a side view with a part cut away, and C is a cross-sectional view taken along line CC of B. The other embodiment of an adapter is shown, A is a front view, B is the side view which notched a part, C is CC sectional drawing of B. It is a principal part longitudinal cross-sectional view which shows other embodiment of this invention structure. It is a principal part longitudinal cross-sectional view which shows other embodiment of this invention structure. The other embodiment of the structure of this invention is shown, A is a longitudinal cross-sectional view, B is a perspective view of an adapter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall 2 Hot water rising pipe 3 Elbow 3a Flange part 4 Notch window 5 Lid 6 Waterproof pan 7 Adapter 7a Male thread part 8 Through-hole 11 Nut

Claims (6)

  A hot water pipe is raised on the back side of the wall, and an elbow is connected to the upper end of the rise pipe with the tip facing the wall, and a notch window is formed at the position of the wall corresponding to the tip of the elbow. A piping structure of the rising pipe in which the rising pipe is drawn into the room through a lid that closes the cutout window, and an adapter having an external thread portion on the outer peripheral surface is formed on the lid. The male screw portion is placed in the room and connected to the tip of the elbow, and a nut is screwed into the male screw portion of the adapter from the room side. The above-mentioned lid is sandwiched in a watertight manner by the flange portion, the lid is formed in a telescopic shape, and the position of the through hole is formed so as to be finely adjustable according to the position of the tip of the elbow. The piping structure of the startup pipe.   2. The piping structure of the rising pipe according to claim 1, wherein a flange is formed on the outer peripheral surface instead of the adapter having a male screw portion, and a screw-in hole extending along the axis is formed on the flange. A plurality of holes are penetrated at equal intervals in the direction, and a set screw is screwed into the screw hole from the inside of the room, and the lid is fixed to the flange of the elbow with this set screw in a watertight manner. Piping structure of raised pipe.   The piping structure of the rising pipe according to claim 1 or 2, wherein a portion of the lid around the through-hole to which the tightening force of the nut or the set screw is applied and the peripheral portion of the lid in contact with the wall are other portions. A piping structure of a start-up pipe characterized by being formed in a harder shape.   The piping structure of the rising pipe according to any one of claims 1 to 3, wherein a portion of a lid around a through hole to which a tightening force of a nut or a set screw is applied and a peripheral portion of the lid in contact with a wall The piping structure of the start-up pipe is characterized by being formed thicker than other parts.   5. The pipe structure of the rising pipe according to claim 1, wherein the lid is formed to be extendable and retractable with a bellows-like portion surrounding the through hole. Piping structure.   6. A piping structure for a start-up pipe according to claim 1, wherein a frame-shaped lid retainer having the same outer shape as the lid is applied to the peripheral portion of the lid from the indoor side. A piping structure of a start-up pipe, characterized in that is fixed to the wall.

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