JP2010270533A - Waterproof pan for bathtub - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof pan for a bathtub, which facilitates the checking of water leakage from a drainage member arranged on the downside of at least either of a wash place floor and the waterproof pan for the bathtub, without providing the waterproof pan for the bathtub with an inspection hole. <P>SOLUTION: This waterproof pan for the bathtub is installed separately with the wash place floor, and installed below the bathtub which is provided adjacently to the wash place floor. The waterproof pan for the bathtub includes a bottom portion, and a sidewall portion which is elongated upward from the entire perimeter of the peripheral edge of the bottom portion. At least a part of the sidewall portion, on the side of the wash place floor, of the sidewall portions has flexibility. The sidewall portion with the flexibility is horizontally pushed and deformed. This enables the formation of a space for checking the water leakage from the drainage member which is arranged on the downside of at least either of the wash place floor and the waterproof pan for the bathtub. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a bathtub waterproof pan, and more specifically to a bathtub waterproof pan disposed under a bathtub.

  Some unit baths include, for example, a wash floor and a bathtub waterproof pan provided adjacent to the wash floor and disposed under the bathtub. This bathtub waterproof pan can receive the hot water even when the hot water leaks under the bathtub from a pipe connection part such as a hot water supply pipe or a supplementary cooking pipe attached to the bathtub. Therefore, the bathtub waterproof pan can prevent hot water from leaking to the building floor or the building wall.

  Also, when constructing a unit bath, it is necessary to inspect water leaks that occur when the drain trap attached to the washroom floor and the bathtub drain elbow attached to the bathtub waterproof pan are insufficiently tightened. Done. This drain trap or bathtub drain elbow is provided under the washing floor and the bathtub waterproof pan.

  Accordingly, there is a waterproof pan for a bathroom unit that enables inspection and cleaning of the joint portion of the drain pipe below the bathtub pan by providing an inspection hole in the bathtub pan (waterproof pan) (Patent Document 1). However, since the bathtub pan receives hot water, it is necessary to close the inspection hole after water leakage has been confirmed, and to close the watertightly. Therefore, when the watertight structure is insufficient, hot water may leak to the building floor or building wall. Furthermore, there is a problem that it takes cost to form the watertight structure.

JP 2002-70100 A

  The present invention has been made on the basis of recognition of such a problem, and without providing an inspection port in the bathtub waterproof pan, from a drainage member disposed on the lower side of at least one of the washing floor and the bathtub waterproof pan. Provided is a bathtub waterproofing pan that can easily check water leakage.

  In order to solve the above problems, the bathtub waterproof pan according to the present invention is a bathtub waterproof pan installed separately from the washing floor and installed below the bathtub provided adjacent to the washing floor. And a side wall portion extending upward from the entire circumference of the peripheral edge portion of the bottom surface portion, and at least a part of the side wall portion on the side of the washing floor among the side wall portions is flexible. And leaking water from a drainage member disposed below at least one of the wash floor and the bathtub waterproof pan by pressing and deforming the flexible side wall portion in a horizontal direction. It is characterized in that a space for confirmation can be formed.

  In the present invention, since at least the side wall portion on the washing floor side is flexible, the operator can deform the side wall portion by pressing the side wall portion in the horizontal direction. Water leakage from the drain trap can be confirmed from the gap generated between the floor and the washing floor. It is not necessary to provide an inspection port or the like in the bathtub waterproof pan, and it is possible to check the leakage of the drain trap while ensuring the watertightness of the bathtub waterproof van.

  In the bathtub waterproof pan according to claim 2 of the present invention, the part having flexibility has a bellows part having a folding line extending substantially in the vertical direction, and the bellows part is pressed in the horizontal direction. It can be deformed by this.

  In this aspect, when the flexible part has the bellows part, at least the side wall part on the washing floor floor side can be deformed more greatly. That is, the side wall portion can be made flexible not only by the material elements of the bathtub waterproof pan but also by the structural elements, and can be deformed more greatly than the case where the bellows portion is not provided. Thereby, the operator can perform the water leak confirmation of the drain trap more easily while ensuring the water tightness of the bathtub waterproof pan.

  The bathtub waterproof pan according to claim 3 of the present application has a bathtub rim on which the wall panel can be placed on the upper surface, and the side wall portion and the bathtub rim are arranged apart from each other, and The load on the upper surface of the bathtub rim is disposed so as not to be applied to the side wall portion.

  In this aspect, since the side wall portion does not need to have a strength that can support the load received by the bathtub rim, flexibility can be imparted to the side wall portion. Therefore, the operator can easily check for water leakage from the drainage member while further ensuring the watertightness of the bathtub waterproof pan.

  ADVANTAGE OF THE INVENTION According to this invention, the bathtub which can perform easily the water leak confirmation from the drainage member arrange | positioned below at least any one of a wash floor and a bathtub waterproofing pan, without providing an inspection port in a bathtub waterproofing pan A waterproof pan is provided.

It is a perspective schematic diagram showing the unit bath provided with the bathtub waterproofing pan concerning embodiment of this invention. It is a disassembled schematic diagram showing the unit bath provided with the bathtub waterproofing pan concerning this embodiment. It is a perspective schematic diagram showing the vicinity of the bathtub waterproofing pan and drain trap concerning this embodiment. It is a perspective schematic diagram showing the bathtub waterproofing pan concerning this embodiment. It is a perspective schematic diagram showing the bathtub waterproofing pan concerning this embodiment. It is the cross-sectional schematic diagram which looked at the unit bath before deflecting the bathtub waterproofing pan concerning this embodiment from the side. It is the cross-sectional schematic diagram which looked at the unit bath of the state which bent the bathtub waterproofing pan concerning this embodiment from the side. It is the cross-sectional schematic diagram which looked at the bathtub waterproofing pan concerning this embodiment from the side. It is the cross-sectional schematic diagram which expanded the drainage part vicinity of the bathtub waterproofing pan, and was seen from diagonally.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a schematic perspective view showing a unit bath provided with a bathtub waterproof pan according to an embodiment of the present invention.
FIG. 2 is an exploded schematic view showing a unit bath provided with a bathtub waterproof pan according to the present embodiment.
FIG. 3 is a schematic perspective view illustrating the vicinity of a bathtub waterproof pan and a drain trap according to the present embodiment.
In the unit bath shown in FIGS. 2 and 3, for convenience of explanation, a bathtub, an apron, and the like are omitted as appropriate.

  The unit bath shown in FIGS. 1 to 3 is a washing ground frame 210 placed on a building floor (not shown), a washing floor floor 100 placed on the washing ground frame 210, and a building that is fixed to the washing ground frame 210 and is not shown. Bathtub stand 220 placed on the floor, bathtub waterproof pan 300 placed on bathtub stand 220, bathtub 400 placed on bathtub waterproof pan 300, wash floor 100 and bathtub 400 And a bus apron 500 that is detachably installed between the two. As shown in FIG. 2, the washing floor 100 and the bathtub waterproof pan 300 are installed as separate bodies.

The washroom stand 210 has support legs 211 called “adjuster bolts” and is placed at an arbitrary position on the building floor.
The bathtub base 220 is appropriately fixed to the washing place base 210 by a fastening member such as a screw, welding, adhesion, or the like. The bathtub base 220 has support legs 221 called “adjuster bolts” and the like, similarly to the washing place base 210. By appropriately adjusting these support legs 211 and 221, the height of the washing floor 100, the bathtub waterproof pan 300 and the bathtub 400 can be adjusted.

  The bathtub 400 includes a bottom surface portion 401, side wall portions 402a, 402b, 402c, and 402d that extend upward from the entire periphery of the peripheral edge portion of the bottom surface portion 401, and a bathtub rim 405 that forms an upper surface or an upper end. Moreover, as shown in FIGS. 2 and 3, a drainage part 430 capable of draining the water in the bathtub 400 is attached to the outside of the bottom part 401 (the side opposite to the side where the user bathes). . The drainage part 430 has a drainage port, and the water in the bathtub 400 is drained through the drainage port. In the present specification, the term “water” includes not only cold water but also heated hot water. A wall panel (not shown) is placed on the bathtub rim 405. That is, the bathtub 400 can receive the load of the wall panel and ceiling of a unit bath.

  The bathtub waterproofing pan 300 includes a bottom surface portion 301 and side wall portions 302a, 302b, 302c, and 302d that extend upward from the entire periphery of the peripheral edge portion of the bottom surface portion 301. The height positions of the upper ends of the side wall portions 302 a, 302 b, and 302 c are slightly lower than the height position of the bathtub rim 405 of the bathtub 400 placed on the bathtub waterproof pan 300. Therefore, a gap exists between the upper ends of the side wall portions 302a, 302b, and 302c and the bath rim 405. Thereby, a load such as a wall panel received by the bathtub rim 405 is not applied to the bathtub waterproof pan 300. Therefore, the side wall portions 302a, 302b, 302c, and 302d of the bathtub waterproof pan 300 do not have to be strong enough to support the load received by the bathtub rim 405, and as will be described in detail later, the side wall portion 302d. Can be given flexibility.

  On the other hand, the height of the upper end of the side wall portion 302d of the bathtub waterproof pan 300 is lower than the height of the bathtub rim 405 of the bathtub 400 placed on the bathtub waterproof pan 300. For example, the bottom surface portion 401 of the bathtub 400 and the bathtub It is about an intermediate portion with the rim 405. Therefore, the side wall portion 302 d of the bathtub waterproof pan 300 can cover a part of the side wall portion 402 d of the bathtub 400. The other part of the side wall part 402 d of the bathtub 400 that is not covered by the side wall part 302 d of the bathtub waterproof pan 300 is covered with the bath apron 500.

  As shown in FIG. 3, a drain pipe 441 connected to the drain part 430 of the bathtub 400 is installed inside the bathtub waterproof pan 300. On the other hand, a drain pipe (drainage member) 442 connected to the drain pipe 441 is installed outside the bathtub waterproof pan 300 and below the washing floor 100. The drainage pipe 442 is connected to a drainage trap (drainage member) 150 attached to the lower side of the washing floor 100. That is, one end of the drain pipe 441 is connected to the drain part 430 of the bathtub 400, and the other end is connected to the drain pipe 442. Further, one end of the drain pipe 442 is connected to the drain pipe 441, and the other end is connected to the drain trap 150. Note that at least one of the drain pipes 441 and 442 passes through the side wall portion 302d on the washing floor 100 side, and the penetrating portion is watertightly attached by a watertight member such as packing.

  Therefore, the water drained from the drainage part 430 of the bathtub 400 is guided to the drain trap 150 through the drain pipes 441 and 442. The water led to the drain trap 150 is temporarily stored in the drain trap 150 as sealed water, and then drained out of the unit bath and the building through the drain pipe 161 connected to the drain trap 150. The The drain trap 150 is fixed to the underside of the washroom floor 100 via a fastening flange, and stinks and pests are stored in the bathroom by temporarily storing the introduced water as sealed water inside. Intrusion can be prevented. Therefore, when this tightening and fixing is insufficient, water leakage may occur from that portion.

  Further, as described above, the bathtub waterproof pan 300 includes the bottom surface portion 301 and the side wall portions 302a, 302b, 302c, and 302d extending upward from the entire periphery of the peripheral edge portion of the bottom surface portion 301. Even when water leaks from a connecting portion with a hot water supply pipe or additional cooking pipe (not shown), the leaked water can be received. Then, the received water is drained through the drainage part 310 and the drainage pipe 321 of the bathtub waterproof pan 300.

  More specifically, as shown in FIG. 3, the bottom surface portion 301 of the bathtub waterproof pan 300 is provided with a drainage portion (drainage member) 310 that can drain the water in the bathtub waterproof pan 300. In addition, one end of a drain pipe (drainage member) 321 is connected to the drainage section 310. Similarly to the drain pipe 442, the drain pipe 321 is provided outside the bathtub waterproof pan 300 and below the wash floor 100, and the other end is connected to the drain trap 150.

Therefore, the water received by the bathtub waterproof pan 300 is drained from the drainage part 310 of the bathtub waterproof pan 300 and guided to the drain trap 150 through the drain pipe 321. The water led to the drain trap 150 is temporarily stored in the drain trap 150 as sealed water, and then drained out of the unit bath and the building through the drain pipe 161 connected to the drain trap 150. The In this way, water leaked from a connection portion between the bathtub 400 and a hot water supply pipe or additional cooking pipe (not shown) is received by the bathtub waterproof pan 300 and guided to the drain trap 150 through the drain 310 and the drain pipe 321. Then, the water is drained from the drain pipe 161. That is, the bathtub waterproof pan 300 can more reliably suppress water from leaking to the bathtub mount 220 or the building floor.
In addition, the drainage part 310 is being fixed to the lower side of the bathtub waterproofing pan 300 via the fastening flange similarly to the drainage trap 150. FIG. This will be described in detail later. Therefore, as with the drain trap 150, when this tightening and fixing is insufficient, water may leak from that portion.

  Here, when constructing the unit bath as shown in FIGS. 1 to 3, the operator checks whether or not water has leaked from the drain trap 150 or the drain unit 310. In general, the water leakage is confirmed by directly observing the drain trap 150 and the drain part 310, indirectly by using a mirror or the like, or by pulling up a pre-laid test paper. Is done. However, the drain trap 150 provided on the lower side of the washing floor 100 adjacent to the bathtub waterproof pan 300 and the drainage portion 310 provided on the lower side of the bathtub waterproof pan 300 are directly or indirectly visually observed. It is not easy to pull up the test paper laid in advance. This is because the space for confirming water leakage is narrow.

  Therefore, there is a method of checking the water leakage by providing an inspection port in the bathtub waterproof pan 300 and visually observing the drain trap 150 directly or indirectly from the inspection port. However, if an inspection port is provided in the bathtub waterproof pan 300, it is necessary to close the inspection port after confirming water leakage, and it is necessary to close the watertightly. Therefore, when the watertight structure of the inspection port is insufficient, it is not preferable because water may leak to the building floor or the building wall. Furthermore, it is not preferable to form a watertight structure of the inspection port because of the cost.

  On the other hand, in the unit bath provided with the bathtub waterproof pan 300 according to the present embodiment, the operator pushes the side wall portion 302d of the bathtub waterproof pan 300 toward the side opposite to the washing floor 100, that is, the bathtub 400 side. A gap (space) for confirming water leakage can be secured. Then, the operator can visually observe the light from the gap (space), or indirectly by inserting a mirror or the like to check whether water has leaked from the drain trap 150 or the drain part 310. You can check whether or not. Alternatively, the operator pulls up the test paper laid in advance under the washing floor 100 or the bathtub waterproof pan 300 from the gap (space), and confirms the pulled test paper, so that the drain trap 150 or the drainage can be obtained. It can be confirmed whether or not water leaks from the portion 310. Hereinafter, the structure of the bathtub waterproof pan 300 and the method for confirming water leakage from the drain trap 150 and the drain unit 310 will be described in more detail with reference to the drawings.

First, the structure of the bathtub waterproof pan 300 according to the present embodiment will be described.
4 and 5 are schematic perspective views illustrating the bathtub waterproof pan according to the present embodiment.
4 is a schematic perspective view of the bathtub waterproof pan 300 when viewed from the front (washing floor 100 side), and FIG. 5 is a view of the bathtub waterproof pan 300 from the rear (opposite side of the washing floor 100). FIG.

  As described above with reference to FIGS. 1 to 3, the bathtub waterproof pan 300 according to the present embodiment includes a bottom surface portion 301 and side wall portions 302 a, 302 b, 302 c that extend upward from the entire periphery of the peripheral edge portion of the bottom surface portion 301. 302d. As shown in FIGS. 4 and 5, the side wall portion 302 d is provided with a bellows portion 303 having a folding line extending substantially in the vertical direction. That is, the bellows portion 303 has a substantially wavy cross section when the bathtub waterproof pan 300 is viewed from above or below, and the peaks and valleys of the bellows portion 303 extend substantially in the vertical direction.

  In the bathtub waterproof pan 300 according to the present embodiment, the two bellows portions 303 are formed. However, the present invention is not limited to this, and even if one or three or more bellows portions 303 are formed. Good. Further, the direction of the folding line of the bellows portion 303 does not have to be strictly in the vertical direction, and may extend in an oblique direction. A recess 305 that is recessed in the bathtub waterproof pan 300 is formed between the two bellows portions 303.

  Further, as shown in FIGS. 4 and 5, a drain pipe hole 307 is provided in the side wall portion 302 d. Then, by passing at least one of the drain pipes 441 and 442 (see FIG. 3) through the drain pipe hole 307, the drain pipe 441 and the drain pipe 442 can be connected. The drain pipes 441 and 442 are fixed in a watertight manner in the drain pipe hole 307. Further, as shown in FIG. 5, the bottom surface portion 301 is provided with a drain hole 309. And the drainage part 310 of the bathtub waterproofing pan 300 is fixed to the drainage part hole 309 in a watertight manner. This will be described in detail later.

  The bathtub waterproof pan 300 is made of resin or the like, and examples of the material thereof include PP (polypropylene), ABS (acrylonitrile-butadiene-styrene), FRP (fiber reinforced plastic: Fiber Reinforced). Plastics), and rubber. Among these, PP and ABS are more preferable because they are easily deformed. The thickness is more preferably about 10 mm or less.

  Thus, since the bathtub waterproofing pan 300 has the bellows portion 303 and is formed of a resin such as PP or ABS, the side wall portion in the direction of arrow A (horizontal direction) shown in FIG. When 302d is pushed, the side wall 302d can be deformed. More specifically, when an operator or the like pushes the side wall 302d in the direction of arrow A (horizontal direction), the side wall 302d can be bent in the direction of the bathtub waterproof pan 300. That is, the side wall part 302d has flexibility.

  For example, in the case of the bathtub waterproof pan 300 made of PP and having the shape shown in FIGS. 4 and 5, the amount of deflection is about 50 to 60 millimeters. When side wall part 302d bends in the direction in bathtub waterproofing pan 300, as will be described in detail later, the gap between bathtub waterproofing pan 300 and wash floor 100 becomes larger. Therefore, the operator may visually observe the light from the gap that has become larger, or insert a mirror or the like to indirectly observe the water, so that water does not leak from the drain trap 150 or the drain part 310. You can check whether or not. Alternatively, the operator pulls up the test paper previously laid under the wash floor 100 or the bathtub waterproof pan 300 from the gap, and confirms the pulled test paper from the drain trap 150 or the drain unit 310. It can be confirmed whether or not water is leaking.

According to this, water leakage from the drain trap 150 or the drain unit 310 can be confirmed without providing an inspection port in the bathtub waterproof pan 300. Therefore, it is not necessary to close the inspection port or provide a watertight structure, and water leakage from the drain trap 150 or the drainage section 310 can be confirmed while ensuring the water tightness of the bathtub waterproof pan 300. Further, since the watertight structure at the inspection port is not required, there is no cost for the watertight structure.
Furthermore, when water leakage is confirmed using a test paper, the test paper can be pulled up more easily because the path from the test paper laid to the gap is short. According to this, there is little possibility that the test paper is caught on the washing ground frame 210 or the bathtub frame 220 and is torn or left under the washing floor 100 or the bathtub waterproof pan 300. Further, since the path from the laid test paper to the gap is short, there is little possibility of water adhering to the test paper in portions other than the drain trap 150 and the drainage section 310. According to this, water leakage from the drain trap 150 and the drain part 310 can be confirmed more accurately.

Next, a method for confirming water leakage from drainage members such as the drainage trap 150 and the drainage unit 310 will be described.
FIG. 6 is a schematic cross-sectional view of the unit bath viewed from the side before the bathtub waterproof pan according to the present embodiment is bent.
Moreover, FIG. 7 is the cross-sectional schematic diagram which looked at the unit bath of the state which bent the bathtub waterproofing pan concerning this embodiment from the side.

  First, the worker appropriately installs the washing ground base 210, the washing ground floor 100, the bathtub base 220, the bathtub waterproof pan 300, and the bathtub 400 at predetermined positions. Subsequently, water is poured into the washing floor 100 or the bathtub 400. At this time, the operator pushes the side wall portion 302d of the bathtub waterproof pan 300 in the direction of arrow A (horizontal direction) shown in FIG. Then, as shown in FIG. 7, the side wall portion 302 d bends in the direction in the bathtub waterproof pan 300, that is, on the side opposite to the washing floor 100. This is because the bellows portion 303 is provided on the side wall portion 302d and the bathtub waterproof pan 300 is formed of a resin such as PP or ABS as described above with reference to FIGS.

  When pushing the side wall portion 302d in the direction of arrow A, it is more preferable to push the portion between the two bellows portions 303 or the vicinity of the recess 305. According to this, the central portion (near the recess 305) of the side wall portion 302d can be greatly bent to the side opposite to the washing floor 100, and the side wall portion 302d adjacent to the installation position of the drain trap 150 can be It can be bent more greatly.

  When the side wall 302d is bent to the opposite side of the washing floor 100, as shown in FIG. 7, a larger gap is formed between the side wall 302d and the washing floor 100 than before the side wall 302d is bent. Arise. Therefore, the operator can directly or indirectly arrange the drain trap through the mirror by shining light through the gap or inserting a mirror or the like as shown by an arrow B in FIG. 150 and the drainage part 310 can be visually observed. Thereby, an operator confirms whether the water has leaked from the drain trap 150 or the drainage part 310 by visually observing the drain trap 150 or the drainage part 310 directly or through a mirror. be able to. Alternatively, the operator can pull up the test paper laid in advance under the washing floor 100 or the bathtub waterproof pan 300 in the direction opposite to the arrow B from the gap and confirm the pulled test paper. . Thereby, it is possible to confirm whether or not water has leaked from the drain trap 150 or the drain unit 310.

  According to this, since the operator can perform water leakage confirmation from the drain trap 150 and the drain part 310 without providing an inspection port in the bathtub waterproof pan 300, the water tightness of the bathtub waterproof pan 300 is further secured. Water leakage from the drain trap 150 and the drain unit 310 can be confirmed. The operator can also check for water leakage from the drain pipe 442 and the drain pipe 321 installed outside the bathtub waterproof pan 300 and below the washing floor 100. Further, when water leakage is confirmed using test paper, the same effects as those described above with reference to FIGS. 4 and 5 can be obtained.

  In this embodiment, after flowing water into the washing floor 100 or the bathtub 400, the side wall 302d is pushed and bent, and a mirror or the like is inserted from the gap between the side wall 302d and the washing floor 100. However, it is not limited to this. For example, the operator pushes and bends the side wall portion 302d, inserts a mirror or the like through the gap between the side wall portion 302d and the washing floor 100, and then flows the water into the washing floor 100 or the bathtub 400. Also good. Even in this case, the operator can check water leakage from the drain trap 150 and the drain unit 310 while ensuring the water tightness of the bathtub waterproof pan 300.

Next, the drainage part 310 of the bathtub waterproof pan 300 according to the present embodiment will be described.
FIG. 8 is a schematic cross-sectional view of the bathtub waterproof pan according to the present embodiment as viewed from the side.
Moreover, FIG. 9 is the cross-sectional schematic diagram which expanded and looked at the drainage part vicinity of the bathtub waterproofing pan from the diagonal.

  As described above with reference to FIGS. 1 to 3, the bathtub waterproof pan 300 according to the present embodiment is a case where water leaks from a connection portion between the bathtub 400 and a hot water supply pipe or a cooking pipe (not shown). Can receive leaked water. Then, the received water is drained through the drainage part 310 and the drainage pipe 321 of the bathtub waterproof pan 300.

  As shown in FIG. 9, the drainage section 310 of the bathtub waterproof pan 300 includes a check valve cover 311, a drainage flange 313, and a drainage elbow 315. The check valve cover 311 is fixed to the bottom surface portion 301 of the bathtub waterproof pan 300 by a fastening member 319 such as a screw. The check valve cover 311 has a through hole 311a, and a check valve (not shown) is provided in the through hole 311a. When water accumulates in the bathtub waterproof pan 300 and water pressure is applied to a check valve (not shown), the check valve is opened by the water pressure. Thereby, the water received by the bathtub waterproof pan 300 is drained through the through hole 311a and a check valve (not shown). Further, the check valve cover 311 can stop water flowing back from the drain elbow 315 into the bathtub waterproof pan 300.

  A drainage elbow 315 is installed on the lower side (outside) of the bathtub waterproof pan 300. The drainage elbow 315 has a flange portion 315a extending radially outward at its upper end. For example, a female screw is formed on the inner peripheral wall of the drainage elbow 315 in the vicinity of the flange portion 315a. On the other hand, the drainage flange 313 has a flange portion 313a extending in the radially outward direction at the upper end portion. For example, a male screw is formed on the outer peripheral wall of the drainage flange 313 below the flange portion 313a.

  Then, the bottom portion 301 of the bathtub waterproof pan 300 is sandwiched between the flange portion 313a of the drainage flange 313 and the flange portion 315a of the drainage elbow 315, and the male screw of the drainage flange 313 is screwed to the female screw of the drainage elbow 315. By draining and tightening, the drainage elbow 315 can be attached to the bottom surface portion 301. In addition, as shown in FIG. 9, a packing 317 made of an elastic material such as rubber is provided on the inner peripheral portion of the drain hole 309 (see FIG. 5). That is, the packing 317 is sandwiched between the drainage flange 313 and the bottom surface portion 301 and between the bottom surface portion 301 and the drainage elbow 315. Thereby, the drain elbow 315 is fixed in a watertight manner to the bottom surface portion 301 of the bathtub waterproof pan 300.

  As shown in FIG. 3, a drain pipe 321 is connected to one end of the drain elbow 315. Therefore, the water leaked into the bathtub waterproof pan 300 from the connection part between the bathtub 400 and the hot water supply pipe or the additional cooking pipe is a check valve cover 311, a drain flange 313, a drain elbow 315, a drain pipe 321, It is led to the drain trap 150.

  A drain (not shown) for guiding the water in the bathtub waterproof pan 300 to the washing floor 100 is provided in the vicinity of an intermediate portion between the bottom surface portion 301 of the bathtub waterproof pan 300 and the upper end portion 304 (see FIG. 4) of the bathtub waterproof pan 300. A drain pipe is provided. According to this, water clogging occurs in the check valve cover 311 and the drainage elbow 315, and the water level rises even when the water received by the bathtub waterproof pan 300 cannot be guided from the drainage pipe 321 toward the drainage trap 150. The water in the bathtub waterproofing pan 300 can be guided to the washing floor 100 through the drain drain pipe.

  As described above, according to the present embodiment, the side wall portion 302d of the bathtub waterproof pan 300 is provided with the bellows portion 303 formed in the vertical direction, and the bathtub waterproof pan 300 is made of, for example, PP or ABS. It is made of resin. Therefore, the operator can bend the side wall 302d of the bathtub waterproof pan 300 to the opposite side of the washing floor 100, and from the larger gap (space) generated between the side wall 302d and the washing floor 100, for example, You can shine light or insert a mirror. According to this, the operator visually observes the drain trap 150, the drain part 310, and the drain pipes 442 and 321 directly or indirectly through a mirror, so that the drain trap 150, the drain part 310, and the drain pipe 442 are visually observed. , 321 can be confirmed whether or not water is leaking. Therefore, the operator can check water leakage from the drain trap 150, the drain unit 310, and the drain pipes 442 and 321 while further ensuring the water tightness of the bathtub waterproof pan 300. Alternatively, the operator lifts the test paper previously laid under the washing floor 100 or the bathtub waterproof pan 300 from a larger gap (space) generated between the side wall portion 302d and the washing floor 100, and lifts the test paper. You can check the test paper. Thereby, it is possible to confirm whether or not water has leaked from the drain trap 150, the drain section 310, and the drain pipes 442 and 321.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, etc. of each element provided in the bathtub waterproof pan 300 and the like, and the installation forms of the drain pipes 441, 442, 321 and the drain trap 150 and the drain section 310 are limited to those illustrated. Instead, it can be changed as appropriate.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  100 Washing floor, 110 Support leg, 150 Drain trap, 161 Drain pipe, 210 Washing station rack, 220 Bath rack, 211, 221 Support leg, 300 Bath waterproofing pan, 301 Bottom face, 302a, 302b, 302c, 302d Side wall, 303 Accordion portion, 304 upper end portion, 305 concave portion, 307 drainage pipe hole, 309 drainage portion hole, 310 drainage portion, 311 check valve cover, 311a through hole, 313 drainage flange, 313a collar, 315 drainage elbow, 315a collar, 317 packing, 319 fastening member, 321 drainage pipe, 400 bathtub, 401 bottom surface part, 402a, 402b, 402c, 402d side wall part, 405 bathtub rim, 430 drainage part, 441, 442 drainage pipe, 500 bath apron

Claims (3)

A bathtub waterproofing pan installed separately from the washing floor and installed below the bathtub provided adjacent to the washing floor,
The bottom,
A side wall extending upward from the entire periphery of the peripheral edge of the bottom surface,
With
At least a part of the side wall portion on the side of the washing floor among the side wall portions has flexibility,
In order to confirm water leakage from a drainage member disposed below at least one of the washing floor and the bathtub waterproof pan by pressing and deforming the flexible side wall portion in the horizontal direction. Bathtub waterproofing pan, characterized in that it can form a space. The flexible part has a bellows part having a folding line extending in the vertical direction,
The bathtub waterproofing pan according to claim 1, wherein the bellows part is deformable by being pressed in a horizontal direction. The bathtub has a bathtub rim capable of mounting a wall panel on the upper surface,
The said side wall part and the said bathtub rim are arrange | positioned mutually spaced apart, and are arrange | positioned so that the load in the upper surface of the said bathtub rim may not be added to the said side wall part. The bathtub waterproofing pan according to 2.

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