JP5665587B2 - Renewal method of piping for supplying hot water, water, or mixed hot water to a water supply apparatus installed in the bathroom, and a lid structure used in the method - Google Patents

Description

  The present invention relates to a method for renewing a pipe for supplying hot water, water, or mixed hot water to a water supply apparatus installed in a bathroom of a unit bath in which a wall panel is erected inside a housing, and a lid structure used in the method. It is.

  For example, in a unit bath in a housing complex, a bathroom is formed by standing a wall panel on the edge of a floor pan installed at a predetermined location in the dwelling unit, and a bathtub is installed adjacent to the washing area in the bathroom. In addition, the side surface of the washing room side of the bathtub is covered with an apron in order to improve the appearance or prevent water from entering the lower surface of the bathtub from the washing area side. Also, for example, outside the bathroom, the hot water supply pipe connected to the water heater installed in the shaft (PS) outside the housing wall on the opposite side of the dressing room across the bathroom extends the space below the floor pan of the bathroom Then, it extends to the space below the floor surface of the adjacent dressing room, branches in the space, and one of the branched hot water supply pipes passes through the space below the floor pan of the bathroom and is behind the wall panel of the bathroom. The tip of the space is connected to the hot water supply side of a hot and cold water mixing plug installed in the bathroom via an elbow joint. Similarly, outside the bathroom, for example, the water supply pipe connected to the main water supply pipe laid in the PS extends through the space below the floor pan of the bathroom to the space below the floor of the dressing room, One of the branched water supply pipes branching in the space rises through the space under the floor pan of the bathroom and rises up the space on the back of the bathroom wall panel, and its tip is installed in the bathroom via an elbow joint. It is connected to the water supply side of the water tap. Further, among the branched hot water supply pipes and water supply pipes, other hot water supply pipes and water supply pipes are connected to other equipment such as a wash basin, a washing machine, a flush toilet tank, and a kitchen faucet, respectively.

  When renewing the hot water supply pipes and water supply pipes supplied to the bathroom of the unit bath where the wall panels are erected inside the frame wall due to deterioration over time, etc., they were installed in the space behind the wall panels and the space below the floor pan. The hot water supply pipes and water supply pipes are not removed but are left as they are, and the updated hot water supply pipes and water supply pipes are arranged in a state of being exposed at the corners in the bathroom and covered with a cosmetic pipe cover.

  In addition, there exist patent documents 1 and 2 as an example of the hot water supply of a bathroom, and the piping structure for water supply, and there exist patent documents 3 and 4 as an example of the wall structure which provides an opening in the wall panel of a bathroom.

JP-A-9-228434 JP-A-6-193286 JP-A-11-62286 JP 2004-76563 A

  However, when renewing the hot water supply pipes and water supply pipes of a conventional unit bath, the updated hot water supply pipes and water supply pipes are exposed in the bathroom although they are covered with a cosmetic pipe cover, so it looks nice. It was bad, and the makeup pipe cover covering the hot water supply pipe and the water supply pipe was only white, so if the color does not match the bathroom wall, it is annoying and unpleasant, and after renewal, the hot water supply pipe when cleaning the bathroom Also, the water supply piping was in the way, and cleaning work was difficult.

  On the other hand, in the case of Patent Document 1, the hot water supply pipe and the water supply pipe connected to the hot and cold water mixing tap installed in the bathroom are laid in the space between the wall panel and the storage unit wall surface. A structure is required, and no procedure is disclosed for renewing hot water supply pipes and water supply pipes. Further, in the case of Patent Document 2, the unit side pipe in the unit bathroom is laid in a space formed between the wall surfaces of the casing arranged outside the specially provided counter in the unit bathroom via a branch pipe. Although it is connected to the main pipe, no procedure is disclosed for renewing the main pipe.

  Furthermore, although patent document 3 forms the opening in the wall of a unit bathroom, and installs the niche panel for bathroom inside shelves in the opening part, the opening part is for updating hot water supply piping and water supply piping Furthermore, in Patent Document 4, an opening is formed in the wall panel and a water heater is installed in the opening, but this opening is provided for renewing the hot water supply pipe and the water supply pipe. Not a thing.

  In view of the above circumstances, the present invention can provide various types of models by forming an opening in a wall panel and updating a pipe from the opening when updating a pipe such as a hot water supply pipe and a water supply pipe. The unit bus system can be renewed with little modification, and the renovated pipes are installed in the space behind the wall panel instead of being installed in the bathroom. The purpose of the present invention is to provide a lid structure that can close the opening nicely after renewal of piping such as hot water supply piping and water supply piping, as well as providing a method for renewing piping that does not interfere with Is.

A method for updating a pipe for supplying hot water, water, or mixed hot water to a water supply apparatus installed in a bathroom of a unit bath in which a wall panel is erected inside the housing wall of claim 1,
After separating the bathtub from the side of the wall panel on which the hot water tap, or the water tap, or the hot water mixing tap is attached, an opening is formed in the wall panel from the side of the bathroom inside the wall panel,
Using the cutting means from the opening, the existing hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe from which the water supply equipment has been removed, installed in the space on the outer wall side of the wall panel, Cutting at a predetermined position in the longitudinal direction of the hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe,
Remove the hot water supply pipe, water supply pipe, or hot water supply pipe and water supply pipe from which the water supply equipment was cut off and removed from the opening to the bathroom side.
Insert a new flexible hot water supply pipe, or a water supply pipe, or a hot water supply pipe and a water supply pipe into the space on the bathroom outer surface side of the wall panel from the opening on the bathroom side. Lay up to a predetermined position in the continuous horizontal space and the space below the floor outside the bathroom,
After the water heater is connected to the new hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe from the bathroom side and attached to the wall panel, or before the opening is attached, the opening is closed with a lid.

The renewal method of the pipe for supplying hot water, water, or mixed hot water to the water supply equipment installed in the bathroom of the unit bath in which the wall panel is erected inside the frame wall of claim 2
A new hot water supply pipe installed, or a hot water supply pipe, a hot water supply pipe and a hot water supply pipe, or an upstream tip in the flow direction of the water supply, or an upstream tip in the flow direction of the hot water and water supply at the lower part of the floor outside the bathroom Connected to other hot water supply pipes, or water supply pipes, or hot water supply pipes and water supply pipes arranged in the space of
A method of updating a pipe for supplying hot water, water, or mixed hot water to a water supply apparatus installed in a bathroom of a unit bath in which a wall panel is erected inside the frame wall of claim 3 is another hot water supply pipe, or From the other hot water source in the residential area to the tip of the water supply pipe or the new hot water supply pipe of the hot water supply pipe and the water supply pipe or the side opposite to the side to which the hot water supply pipe or the hot water supply pipe and the water supply pipe are connected Through the main pipe that merges the branch pipes, the specified equipment is connected,
A pipe renewal method for supplying hot water, water, or mixed hot water to a water supply device installed in a bathroom of a unit bath in which a wall panel is erected inside the housing wall of claim 4 is provided as a hot water supply pipe and a water supply pipe. A double-layered polyethylene pipe in which an outer tube harder than the inner tube is fitted to the outer periphery of the tube, and a flexible tube in which the outer periphery of the outer tube is covered with a buffer material is used.

6. A lid for closing the opening used for renewal of a pipe for supplying hot water, water, or mixed hot water to a water supply apparatus installed in a bathroom of a unit bath in which a wall panel is erected inside the housing wall of claim 5 The structure is
The opening provided in the circumferentially endless inner frame to be fitted into the opening formed in the wall panel standing to form the bathroom of the unit bath inside the frame wall, and the outer peripheral edge on one end side of the inner frame A frame body having a flange portion located on the bathroom side,
A plate body that is attached to the flange portion of the frame body and shields the opening from the bathroom side;
An inner frame fixing spring provided with a Ω-shaped convex portion having a cross-sectional shape that is inserted into a plurality of holes that are provided at predetermined intervals in the circumferential direction of the inner frame and penetrate in the thickness direction of the inner frame;
A plate-like first rubber inclusion interposed between the wall panel and a flange portion of the frame attached to the opening;
A plate-like second rubber intervening body interposed between the flange portion of the frame body and the plate body;
When the inner frame fixing spring is inserted into a hole formed in the inner frame of the frame body, one side of the convex portion of the inner frame fixing spring is on the surface opposite to the bathroom side of the wall panel. The frame body can be fixed to the wall panel via the first rubber intervening body between the flange portion and the wall panel by the contact and the elastic force of the inner frame fixing spring.

  A method for renewing a pipe for supplying hot water, water, or mixed hot water to a water supply apparatus installed in a bathroom of a unit bath in which a wall panel is erected inside a housing wall of the present invention, and a lid structure used in the method According to the present invention, when the hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe is renewed, an opening is formed in the wall panel and the hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe are formed from the opening. Because it can be removed and renewed, the updated hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe can be installed on the back of the wall panel without installing them in the bathroom, improving the appearance. In addition, hot water supply pipes, or water supply pipes, or hot water supply pipes and water supply pipes do not get in the way at the time of cleaning after renewal, so the workability of bathroom cleaning is good, hot water supply pipes, water supply pipes, or hot water supply pipes and Salary Can be closed well look openings updated the pipe, it can achieve equal various excellent effects.

The longitudinal cross-sectional view for demonstrating the procedure of the renewal method of the piping which supplies hot water, water, or mixed hot water to the water supply apparatus installed in the bathroom of the unit bath which installs a wall panel inside the frame wall of this invention FIG. 3 is a longitudinal sectional view of a hot water / water mixing tap installation portion in the bathroom and the vicinity thereof, showing a state before the hot water supply piping and the water supply piping are updated. It is the perspective view which looked at Drawing 1a from the right front side. The longitudinal cross-sectional view of the hot-water mixing tap used in the renewal method of the pipe which supplies hot water, water, or mixed hot water to the water supply equipment installed in the bathroom of the unit bath which installs a wall panel inside the frame wall of the present invention FIG. 5 is a longitudinal sectional view showing a state where a hot and cold water mixing plug is screwed into an elbow joint attached to the upper end of the hot water supply pipe and the water supply pipe and attached to the wall panel. The longitudinal cross-sectional view for demonstrating the procedure of the renewal method of the piping which supplies hot water, water, or mixed hot water to the water supply apparatus installed in the bathroom of the unit bath which installs a wall panel inside the frame wall of this invention It is a longitudinal cross-sectional view of the hot water and water mixing tap installation part of a bathroom which shows the state which made the bathtub separated from the wall panel, and its vicinity. It is the perspective view which looked at FIG. 3a from the right front side. The longitudinal cross-sectional view for demonstrating the procedure of the renewal method of the piping which supplies hot water, water, or mixed hot water to the water supply apparatus installed in the bathroom of the unit bath which installs a wall panel inside the frame wall of this invention It is a longitudinal cross-sectional view of the hot water and water mixing tap installation part of a bathroom and the vicinity which shows the state which provided the opening in the wall panel in the lower part of the hot water and water mixing tap. It is the perspective view seen from the right front side of FIG. 4a. The longitudinal cross-sectional view for demonstrating the procedure of the renewal method of the piping which supplies hot water, water, or mixed hot water to the water supply apparatus installed in the bathroom of the unit bath which installs a wall panel inside the frame wall of this invention The hot water / water mixing tap is removed from the elbow joint and wall panel at the upper end of the hot water supply pipe and water supply pipe, the hot water supply pipe and the water supply pipe are cut at a position lower than the lower end of the opening, and the hot water in the bathroom is taken out from the opening. It is a longitudinal cross-sectional view of the mixing plug installation part and its vicinity. It is the perspective view seen from the right front side of FIG. 5a. The longitudinal cross-sectional view for demonstrating the procedure of the renewal method of the piping which supplies hot water, water, or mixed hot water to the water supply apparatus installed in the bathroom of the unit bath which installs a wall panel inside the frame wall of this invention In the bathroom, the hot and cold water mixing tap installation part shows a state where a new hot water supply pipe and a water supply pipe are inserted into the space between the wall panel and the building frame through the opening of the wall panel and laid in the lower space of the floor pan. It is the longitudinal cross-sectional view of the vicinity. It is the perspective view seen from the right front side of FIG. 6a. The longitudinal cross-sectional view for demonstrating the procedure of the renewal method of the piping which supplies hot water, water, or mixed hot water to the water supply apparatus installed in the bathroom of the unit bath which installs a wall panel inside the frame wall of this invention Then, a hot-water mixing tap is connected to the upper end of the hot water supply pipe and the water supply pipe, which are housed between the wall panel and the building frame and laid from the space below the floor pan to a predetermined position outside the bathroom, via an elbow joint. It is a longitudinal cross-sectional view of the hot water mixing tap installation part of a bathroom, and its vicinity which shows the state which fixed the rising part of the hot water supply piping and the water supply piping to the building frame while attaching a mixing stopper to a wall panel. It is the perspective view seen from the right front side of Drawing 7a in the state where a lid is not attached to an opening. (A) is a longitudinal sectional view showing a state in which a lid is attached to the opening of the wall panel, (b) is an enlarged view of part A of FIG. 8 (a), and (c) is FIG. 8 (a) and FIG. 8 (b). It is an expansion perspective view of the inner frame fixing spring shown in FIG. A bathroom to which a method for renewing a pipe for supplying hot water, water, or mixed hot water to a water supply device installed in a bathroom of a unit bath in which a wall panel is erected inside a housing wall of the present invention, and a plane in the vicinity thereof In the figure, hot water supply pipes and water supply pipes are laid from the space below the floor pan of the bathroom to the space below the floor of the dressing room, and other hot water supply pipes and water supply pipes are connected to the tip of the pipes. It is a top view which shows the state which connected to the predetermined | prescribed apparatus.

  Embodiments of the present invention will be described below together with illustrated examples.

  1a, 1b, 2, 3, 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8 (a), 8 (b) FIGS. 8C and 9 show the first embodiment of the present invention.

  In the figure, reference numeral 1 denotes a bathroom which is a unit bath system, for example, in which a wall panel is erected on the inner side of a frame wall installed on the floor slab 2 of the building. That is, as shown in FIG. 1a, FIG. 1b, etc., in the bathroom 1, the floor pan 4 is installed on the foundation 3 installed on the floor slab 2, and the foundation 5 is placed on one side of the upper surface of the floor pan 4. The bath 6 of the unit bath is installed. And the side location (for example, the near side of a paper surface with respect to FIG. 1a) other than the bathtub 6 installation part in the floor pan 4 is a washing place. A wall panel 7 having a thickness of several millimeters to several tens of millimeters is erected and fixed so as to surround the four sides of the floor pan 4 at a step portion 4 a formed at the outer peripheral edge of the floor pan 4. Although the side of the washing area of the bathtub 6 is not shown, it is covered with an apron in order to improve the appearance or to prevent water from flowing into the space where the foundation 5 under the bathtub 6 is provided from the washing area. It has been broken.

  In a space 9 between the building housing 8 and the wall panel 7, a hot water supply pipe 10 and a water supply pipe 11 are accommodated and erected. The hot water supply pipe 10 and the water supply pipe 11 are bent at a right angle through a joint at the lower end of the space 9, are horizontally laid in the space 12 between the floor slab 2 and the floor pan 4, and extend outside the bathroom 1. As will be described later, in the space below the floor of the dressing room adjacent to the bathroom 1, the tip is connected to other hot water supply pipes and water supply pipes connected to the main water supply pipe, washing machine, water heater, etc. Yes. An elbow joint 13 is connected to the upper end of the hot water supply pipe 10, and an elbow joint 14 is connected to the upper end of the water supply pipe 11. A hot and cold water mixing plug 15 is detachably connected to the elbow joints 13 and 14. The hot and cold water mixing tap 15 is referred to as a water supply device in the claims, and as the water supply device, a hot water supply tap and a water supply tap can be used instead of the hot water mixing tap 15 in this embodiment. .

  That is, as shown in detail in FIG. 2, the elbow joint 13 connected to the upper end of the hot water supply pipe 10 and the elbow joint 14 connected to the upper end of the water supply pipe 11 are bent at right angles to form horizontal portions 16 and 17. Further, male screws 18 and 19 are engraved on the outer periphery on the front end side of the horizontal portions 16 and 17, and female screws 20 and 21 are engraved on the inner periphery on the front end side. Further, flanges 22 and 23 are formed on the outer circumferences of the end portions of the hot water supply pipe 10 and the water supply pipe 11 on the male screws 18 and 19 in the horizontal parts 16 and 17.

  Further, the portions of the elbow joints 13, 14 where the male screws 18, 19 on the distal ends of the horizontal portions 16, 17 are screwed are in contact with the flanges 22, 23 facing the space 9 on the back surface of the wall panel 7. As described above, the fixing rings 26 and 27 are screwed into the tip portions of the male screws 18 and 19 that are fitted into the small holes 24 and 25 and project from the panel 7 to the bathroom 1 side. Thus, the elbow joints 13 and 14 are fixed to the wall panel 7 by the flanges 22 and 23 and the fixing rings 26 and 27, and between the fixing rings 26 and 27 and the surface of the wall panel 7 on the bathroom 1 side. Are provided with O-rings 28 and 29 so that hot water and water are not leaked from the elbow joints 13 and 14. Furthermore, the connecting pipes 30 and 31 of the hot and cold water mixing plug 15 are screwed into the female threads 20 and 21 formed in the horizontal parts 16 and 17 of the elbow joints 13 and 14, respectively. In FIG. 2, 32 and 33 are decorative covers that are externally fitted and fixed to the connecting pipes 30 and 31 of the hot and cold mixing plug 15 to cover the fixing rings 26 and 27 from the bathroom 1 side. Also, 34 and 35 are provided integrally with the connecting pipes 30 and 31, and the side shape is formed in an L shape as a whole, and is arranged in a state of being inclined in an eight shape in front view from the inside of the bathroom 1. Leg pipes 36 are removably attached to the upper ends of the leg pipes 34 and 35, and 37 and 38 are cap nuts used when connecting the upper end sides of the leg pipes 34 and 35 to the mixer plug main body 36. It is.

  Thus, when the unit bath is installed in a predetermined state as shown in FIGS. 1a and 1b, the elbow joints 13 and 14 connected to the hot water supply pipe 10 and the water supply pipe 11 as shown in FIG. The front ends of the horizontal portions 16 and 17 are fitted into the small holes 24 and 25 of the wall panel 7. Further, as described above, the flanges 22 and 23 provided on the horizontal portions 16 and 17 are in contact with the space 9 side surface of the wall panel 7 and are fixed to the male screws 18 and 19 of the horizontal portions 16 and 17. 26 and 27 are in contact with the surface of the wall panel 7 on the side of the bathroom 1, and the elbow joints 13 and 14 are sandwiched between the flanges 22 and 23 of the horizontal portions 16 and 17 and the fixing rings 26 and 27. It is fixed to.

  The decorative covers 32 and 33 are fitted and fixed in advance to the connection pipes 30 and 31 of the hot and cold mixing plug 15, and the connection pipes 30 and 31 are connected to the female threads 20 and 21 in the horizontal portions 16 and 17 of the elbow joints 13 and 14. It is screwed. Further, a mixing plug main body 36 is detachably attached to the leg pipes 34 and 35 provided integrally with the connecting pipes 30 and 31, and the hot and cold mixing plug 15 is attached to the surface of the wall panel 7 on the bathroom 1 side. ing.

  When the hot water supply pipe 10 and the water supply pipe 11 laid from the space 9 between the wall panel 7 and the building frame 8 to the outside of the bathroom 1 through the space 12 below the floor pan 4 shown in FIGS. 1a and 1b are updated. After removing the apron (not shown) provided on the side of the bathtub 6 facing the washing area (for example, the front side of the paper of FIG. 1a), the bathtub 6 is moved away from the hot water mixing tap 15 side. Move (see FIGS. 3a and 3b) to form a working space in front of the hot water / water mixing tap 15 installation portion of the wall panel 7, and about 250 mm × at a predetermined position obliquely below the wall panel 7 at the position where the space is formed. A 250 mm opening 40 is provided (see FIGS. 4a and 4b).

  After the opening 40 is provided in the wall panel 7, the hot water mixing plug 15 is then removed from the elbow joints 13 and 14 and removed from the wall panel 7 (details of how to remove the hot water mixing plug 15 will be described later). The pipe 10 and the water supply pipe 11 are cut with a cutting tool such as a saver saw at a position slightly below the lower edge of the opening 40 and the elbow joints 13 and 14 are connected to the upper ends of the cut hot water supply pipe 10 and water supply pipe 11. The elbow joints 13 and 14 are extracted from the small holes 24 and 25 to the space 9 side while being integrated with the cut hot water supply pipe 10 and the water supply pipe 11, and the cut hot water supply pipe 10 and the water supply pipe 11 are removed from the elbow joints 13 and 14. Is attached to the bathroom 1 from the space 9 through the opening 40, and is further carried out of the bathroom 1 (see FIGS. 5a and 5b). The hot water supply pipe 10 and the water supply pipe 11 are taken out from the space 9 one by one, but either may be put in order. The portions remaining in the spaces 9 and 12 of the hot water supply pipe 10 and the water supply pipe 11 are left as they are (see FIGS. 5a and 5b).

  The procedure for removing the hot / cold mixing tap 15 from the wall panel 7 is as follows. That is, in FIG. 2, the cap nuts 37, 38 are loosened to remove the mixing plug body 36 from the leg tubes 34, 35, and the leg tubes 34, 35 integrated with the connection tubes 30, 31 are connected to the connection tubes 30, 31 respectively. By rotating together, the horizontal pipes 16 and 17 of the elbow joints 13 and 14 are detached from the tips of the horizontal parts 16 and 17 together with the connecting pipes 30 and 31 and removed together with the decorative covers 32 and 33. Next, the fixing rings 26 and 27 are removed from the male threads 18 and 19 at the tips of the horizontal portions 16 and 17 of the elbow joints 13 and 14, and the O-rings 28 and 29 are also removed. Thus, since the removal of the hot and cold water mixing tap 15 is completed, if the hot water supply pipe 10 and the water supply pipe 11 are cut, the cut hot water supply pipe 10 and the water supply pipe 11 pass through the opening 40 from the space 9 as described above. It can be taken out into the bathroom 1.

  When the cut hot water supply pipe 10 and the water supply pipe 11 are removed from the space 9, a flexible hot water supply pipe 41 and a water supply pipe 42 having a length of about 3 m to 4 m, each having a new elbow joint 13, 14 connected to one end, The elbow joints 13 and 14 are inserted into the opening 40 from the tip side where the elbow joints 13 and 14 are not provided, and are sequentially fed through the spaces 9 and 12 to the space below the floor of the dressing room adjacent to the bathroom 1 (see FIGS. 6a and 6b). Normally, the interior surface is not washed with water, so it is often done on the side of a dressing room where waterproofness is not strictly required. However, an opening is provided in the floor again, and the hot water supply pipe 41 and the water supply pipe 42 are drawn from this opening. Like that. The hot water supply pipe 41 and the water supply pipe 42 are, for example, a double-layered polyethylene pipe having an inner pipe and an outer pipe harder than the inner pipe, and preferably a flexible pipe whose outer periphery is covered with a buffer material. Such a flexible pipe made of polyethylene is used because when the hot water supply pipe 41 and the water supply pipe 42 are laid in the spaces 9 and 12, the inner pipe in contact with the hot water supply pipe 41 and the water supply pipe 42 is the building. This is to prevent the casing 8, floor slab 2, foundation 3 and the like from being rubbed and damaged. The cushioning material protects the outer periphery of the flexible tube and is vibrated by a water hammer during the operation after renewal. This is to buffer the sound when hitting something. 6a and 6b show one pipe, in practice, for example, the hot water supply pipe 41 is first laid and then the water supply pipe 42 is laid. Alternatively, the water supply pipe 42 may be laid first, and then the hot water supply pipe 41 may be laid.

  When the hot water supply pipe 41 and the water supply pipe 42 are laid from the space 9 through the space 12 to a predetermined position in the space below the floor of the dressing room, for example, elbow joints 13 and 14 connected to the upper ends of the hot water supply pipe 41 and the water supply pipe 42. The ends of the horizontal portions 16 and 17 are inserted into the small holes 24 and 25 of the wall panel 7 as shown in FIG. 2, and then the fixing rings 26 and 27 on which the O-rings 26 and 27 are provided in advance are attached to the horizontal portion 16. 17 and 17 are fixed to the wall panel 7 by flanges 22 and 23 and fixing rings 26 and 27. When the elbow joints 13 and 14 are fixed to the wall panel 7, the connecting pipes 30 and 31, which are integral with the leg pipes 34 and 35 and are fitted with the decorative covers 32 and 33 on the outer periphery, are connected to the elbow joints 13 and 14. Threaded into the female threads 20 and 21 formed on the inner periphery of the distal end side of the portions 16 and 17, and then the mixing plug body 36 is connected to the leg pipes 34 and 35, the cap nuts 37 and 38 are tightened, and the mixing plug body 36 is Fix to the leg tubes 34 and 35. Furthermore, a plurality of fixing brackets 43 and 44 are attached to the portion of the hot water supply pipe 41 and the water supply pipe 42 located in the space 9 at predetermined intervals from the opening 40 in the vertical direction, and the hot water supply pipes are connected via the fixed brackets 43 and 44. 41 and the water supply pipe 42 are fixed inside the building housing 8, and the opening 40 is closed by a lid 45 (see FIGS. 7 a, 7 b, and 8 a).

  Details of the lid 45 are shown in FIGS. 7b, 8a, 8b, and 8c. That is, the lid body 45 includes a stainless frame body 46 made of a rectangular frame that fits into the opening 40 and a stainless steel plate body 47 that is attached to the frame body 46. A rectangular inner frame 46a that directly fits inside, and a flange portion 46b that is connected to the inner frame 46a and is located on the inside of the bathroom 1 of the wall panel 7 and has a substantially angled cross section. ing. Further, two rectangular small holes 48 are provided on each side of the inner frame 46a. In the figure, 49 is an inner frame fixing spring having a cross-sectional Ω shape formed by a convex spring body 49a and flat edge portions 49b integrally formed on both sides of the opening side end of the spring body 49a. 50 and 51 are waterproof rectangular rubber tapes for waterproofing, 52 is caulking, and 53 is a screw for fixing the lid 45.

  Thus, when the opening 40 is closed with the lid body 45, the inner frame 46a is passed through the opening 40 in a state in which the rubber tape 50 is externally fitted to the inner frame 46a. The frame body 46 is fitted into the opening 40 with the rubber tape 50 sandwiched between the portion 46b and then the inner frame fixing spring 49 bent so as to crush the spring body 49a in the plate thickness direction. The inner frame fixing spring 49 is attached to the inner frame 46a by fitting into the small hole 48 from the 49b side. Then, the spring main body 49a of the inner frame fixing spring 49 tries to return to the original shape by elastic force, and one side portion of the projecting portion comes into contact with the surface of the wall panel 7 on the space 9 side. For this reason, the frame 46 is fixed to the wall panel 7 with the rubber tape 50 interposed therebetween by the elastic force of the spring body 49a.

  Next, the plate 47 is brought into contact with the flange 46 b of the frame 46 with the rubber tape 51 sandwiched between the flange 46 b and the plate 47 of the frame 46, and the plate 47 is fixed to the frame with screws 53. 46 is attached to and fixed to the wall panel 7, the gap between the wall panel 7 and the flange 46 b of the frame 46, the gap between the flange 46 b and the plate 47, and the flange 46 b and the plate. The caulking 52 for waterproofing is performed on the outer periphery of the body 47 (see FIGS. 8A and 8B).

  After the attachment of the lid 45 to the opening 40 is completed or at an appropriate time before the completion, the tips of the hot water supply pipe 41 and the water supply pipe 42 laid outside the bathroom 1 are washed from the opening provided on the floor surface of the dressing room. It connects to predetermined apparatuses, such as a water heater and a water heater, using a joint, and connects to other hot water supply pipes and water supply pipes connected to equipment such as a water supply main pipe, a water heater, and a washing machine via a joint. After the connection is completed, the opening provided on the floor of the dressing room is closed, and the bathtub 6 of the bathroom 1 is returned to its original position (see FIG. 1 (a) and FIG. 1 (b) for the position of the bathtub 6), The work ends. Accordingly, the plate body 47 is hidden in the bathtub 6 and is not visible from the bathroom 1.

  In the first embodiment, when the hot water supply pipe 41 and the water supply pipe 42 are updated, an opening 40 is formed in the wall panel 7 and a part of the existing hot water supply pipe 10 and the water supply pipe 11 is removed from the opening 40 and updated. Therefore, the updated hot water supply pipe 41 and the water supply pipe 42 can be installed in the space 9 on the back surface of the wall panel 7 without being installed in the bathroom 1, the appearance is improved, and hot water is supplied at the time of cleaning after the update. Since the pipe 41 and the water supply pipe 42 do not get in the way, the workability of cleaning the bathroom 1 is good, and the renewed opening 40 of the hot water supply pipe 41 and the water supply pipe 42 can be nicely closed.

  FIG. 9 shows a state where hot water supply pipes and water supply pipes are laid in the space below the floor pan 4 (see FIG. 1 a) of the bathroom 1 and the space below the floor surface of the dressing room 60. That is, the hot water supply pipe 41 and the water supply pipe 42 connected to the hot water mixing tap 15 are laid from the space below the floor pan 4 of the bathroom 1 to the space below the floor surface of the dressing room 60, and the hot water pipe 41 is connected to the dressing room 60. Is connected to another hot water supply pipe 61 through a joint 62 in an opening 60a provided in advance on the floor surface of the other. The water supply pipe 42 is connected to another water supply pipe 65 via joints 63 and 64 in an opening 60 a provided on the floor surface of the dressing room 60. The hot water supply pipe 61 passes through a hole provided in the building housing 8 and is connected to a hot water heater 66 installed outside the bathroom 1.

  In FIG. 9, reference numeral 67 denotes a meter room. In the meter room 67, a water supply main pipe 68 rising along the building is arranged, and the water supply main pipe 68 is provided with a water supply meter 69 in the middle. A branch pipe 70 is connected, and the water supply branch pipe 70 is connected to a water supply inflow side end of the water supply pipe 65. Further, a water supply pipe 71 for supplying water to other devices is connected to the joint 64, and a water supply pipe 74 for supplying water to other devices such as a washing machine 72 and a wash basin 73 is connected to the joint 63. ing. A joint 75 is connected to the joint 62, and the joint 75 is connected to a hot water supply pipe 76 for supplying hot water to other devices such as the washing machine 72 and the wash basin 73, and other than the washing machine 72 and the wash basin 73 other than those shown. A hot water supply pipe 77 for supplying hot water to the device is connected.

  Further, in FIG. 9, reference numeral 78 denotes a water supply pipe connected to the water supply pipe 65 so as to supply water from the water supply branch pipe 70 to the water heater 66 installed outside the bathroom 1, and hot water boiled by the water heater 66. Is sent to the hot water supply pipe 61. The hot water supply pipes 61, 76, 77 and the water supply pipes 65, 71, 74 in FIG. 9 are also two-layer pipes made of cross-linked polyethylene having an inner pipe and an outer pipe harder than the inner pipe, similar to the hot water supply pipe 41 and the water supply pipe 42. It is a flexible tube whose outer periphery is covered with a buffer material. 9, 79 is a water supply pipe for supplying water to the washing machine 72 via a joint 80 connected to the middle of the water supply pipe 74, 81 is a door capable of opening and closing the bathroom 1, and 82 is an opening and closing of the dressing room 60. It is a possible door. As described above, by providing the opening 60a on the floor surface of the dressing room 60, it is possible to easily update each of the hot water supply pipes 41, 61, 76, 77, etc. and the water supply pipes 42, 65, 71, 74, 79, etc. Can do.

  In the embodiment of the present invention, the case where the pipe to be updated is the hot water supply pipe and the water supply pipe has been described. However, when the pipe is only the hot water supply pipe (in this case, a hot water tap is used instead of the hot water mixing tap). Of course, the present invention can be applied to a case where only the water supply pipe is used (in this case, a water tap is used instead of the hot water mixing tap), and various modifications can be made without departing from the scope of the present invention. It is.

DESCRIPTION OF SYMBOLS 1 Bathroom 6 Bathtub 7 Wall panel 9 Space 10 Hot water supply pipe 11 Water supply pipe 15 Hot and cold water mixing tap (water supply equipment)
40 Opening 41 Hot water supply pipe 42 Water supply pipe 45 Lid (lid structure)
46 Frame 46a Inner frame 46b Flange 47 Plate 48 Small hole (hole)
49 Inner frame fixing spring 49a Spring body 49b Edge (one end side outer peripheral edge)
50 Rubber tape (first rubber inclusion)
51 Rubber tape (second rubber inclusion)
61 Hot water supply piping 65 Water supply piping 66 Water heater (equipment)
68 Water supply main piping (equipment)
71 Water supply pipe 72 Washing machine (equipment)
74 Hot water supply pipe 76 Hot water supply pipe 77 Hot water supply pipe

Claims (5)

A method for renewing a pipe for supplying hot water, water, or mixed hot water to a water supply apparatus installed in a bathroom of a unit bath in which a wall panel is erected inside a frame wall,
After separating the bathtub from the side of the wall panel on which the hot water tap, or the water tap, or the hot water mixing tap is attached, an opening is formed in the wall panel from the side of the bathroom inside the wall panel,
Using the cutting means from the opening, the existing hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe from which the water supply equipment has been removed, installed in the space on the outer wall side of the wall panel, Cutting at a predetermined position in the longitudinal direction of the hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe,
Remove the hot water supply pipe from which the water supply apparatus has been cut off or the water supply pipe, or the hot water supply pipe and the water supply pipe from the opening to the bathroom side,
A new flexible hot water supply pipe, or a water supply pipe, or a hot water supply pipe and a water supply pipe are inserted into the space on the bathroom outer surface side of the wall panel from the opening on the bathroom side, and connected to the space and the space. Lay up to a predetermined position in the horizontal space and the space below the floor outside the bathroom,
The new hot water supply pipe, or the water supply pipe, or the hot water supply pipe and the water supply pipe is connected to a water supply device from the bathroom side and attached to the wall panel, or before the attachment, the opening is closed with a lid. How to update the piping.   A new hot water supply pipe installed, or a hot water supply pipe, a hot water supply pipe and a hot water supply pipe, or an upstream tip in the flow direction of the water supply, or an upstream tip in the flow direction of the hot water and water supply at the lower part of the floor outside the bathroom The water supply installed in the bathroom of the unit bath in which the wall panel is erected inside the frame wall according to claim 1, which is connected to another hot water supply pipe arranged in the space, or a water supply pipe, or a hot water supply pipe and a water supply pipe. A method for renewing piping for supplying hot water, water, or mixed hot water to appliances. The other hot water supply pipe, or the water supply pipe, or the new hot water supply pipe of the hot water supply pipe and the water supply pipe, or the tip opposite to the side where the hot water supply pipe or the hot water supply pipe is connected, 3. Installed in a bathroom of a unit bath in which a wall panel is erected on the inside of a frame wall according to claim 1 or 2 , wherein a predetermined equipment is connected through a main pipe that joins branch pipes from other hot and cold water supply destinations. To renew piping for supplying hot water, water, or mixed hot water to a water supply apparatus.   As a hot water supply pipe and a water supply pipe, use is made of a cross-linked polyethylene two-layer pipe in which an outer pipe harder than the inner pipe is fitted to the outer circumference of the inner pipe, and a flexible pipe whose outer circumference is covered with a buffer material is used. Renewal of a pipe for supplying hot water, water, or mixed hot water to a water supply device installed in a bathroom of a unit bath in which a wall panel is erected inside a frame wall according to any one of claims 1 to 3. Method. The opening provided in the circumferentially endless inner frame to be fitted into the opening formed in the wall panel standing to form the bathroom of the unit bath inside the frame wall, and the outer peripheral edge on one end side of the inner frame A frame body having a flange portion located on the bathroom side,
A plate body that is attached to the flange portion of the frame body and shields the opening from the bathroom side;
An inner frame fixing spring provided with a Ω-shaped convex portion having a cross-sectional shape that is inserted into a plurality of holes that are provided at predetermined intervals in the circumferential direction of the inner frame and penetrate in the thickness direction of the inner frame;
A plate-like first rubber inclusion interposed between the wall panel and a flange portion of the frame attached to the opening;
A plate-like second rubber intervening body interposed between the flange portion of the frame body and the plate body;
When the inner frame fixing spring is inserted into a hole formed in the inner frame of the frame body, one side of the convex portion of the inner frame fixing spring contacts the surface of the wall panel opposite to the bathroom side. The frame is configured such that the frame can be fixed to the wall panel via the first rubber intervening member between the flange portion and the wall panel in contact with the elastic force of the inner frame fixing spring. A lid structure for closing the opening used for renewal of a pipe for supplying hot water, water, or mixed hot water to a water supply device installed in a bathroom of a unit bath in which a wall panel is erected inside the wall.

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