JPH11269956A - Draining structure for bathroom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a draining structure for a bathroom whereby waste water leaking from the respective abutting parts of the cap-like members of a draining gutter and the vertical frames of a fitting can be appropriately guided to the draining gutter without causing hindrance such as backflow. SOLUTION: A draining structure for a bathroom A has a draining gutter 6, which is placed on the underside of a fitting provided at the entrance of a bathroom A, and which receives waste water flowing on the floor of the bathroom to the entrance side, and a pair of cap members 30 mounted on both of the outer ends of the draining gutter 6 to close the ends of the draining gutter 6, and both of the vertical frames 13 of the fitting 1 are watertightly butted against each other from above against the parts of the cap members 30 facing the draining gutter 6. Each cap member 30 is provided with a water guide passage 41 through which the waste water leaking to the upper surface of the cap member 30 from the abutting parts is guided to the draining gutter 6, and the water guide passage 41 is provided with a backflow prevention mechanism 44 for preventing the backflow of the waste water from the draining gutter 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, fittings (sliding doors, single sliding doors, bathroom doors, folding doors, etc.) constituting entrances and exits in a unit-structured bathroom in consideration of barrier-free.
Regarding the surrounding drainage structure.

[0002]

2. Description of the Related Art At the entrance of a unit bath (bathroom), a lower frame of a fitting and a bathroom floor are made flush with each other to prevent a disabled person or a wheelchair from tripping. This causes a problem that the wastewater easily leaks to the dressing room side over the lower frame. In order to solve such a problem, for example, one described in Japanese Patent Application Laid-Open No. 8-105272 is known. In this drainage structure, a drainage opening is formed in the lower frame of the fitting, and a drainage gutter is provided below the lower frame to receive drainage from the drainage opening and guide it to the drainage pipe. Is once received by the drain gutter (storage) to prevent water leakage to the dressing room side.

[0003]

By the way, when such a drain gutter is provided, there is a problem of sealing between the drain gutter, the bathroom floor, and the fitting door. In particular, the left and right ends of the drain gutter abut the vertical frame of the fitting to the fore cap of the drain gutter via a seal member from above, but the upper surface of the fore cap is not necessarily flat, and this abutting work is performed on site. There is a problem that drainage easily leaks from this seal member portion due to the fact that it is performed during construction. In this case, simply forming a flow path that communicates the upper surface of the fore cap with the drain gutter may cause the drainage of the drain gutter that is full to flow back to the fore cap side.

The present invention is directed to a bathroom drainage which can appropriately guide drainage leaking from a contact portion between a cap-shaped member of a drainage gutter and a vertical frame of a fitting to the drainage gutter without obstruction such as backflow. Aim to provide structure.

[0005]

A drainage structure for a bathroom according to the present invention is provided below a fitting provided at an entrance and exit of a bathroom and receives drainage of a bathroom floor flowing toward the entrance and exit. A bathroom fitted with a pair of cap members mounted on both outer ends to close the ends of the drain gutter, and the vertical frames of the fittings abutting watertight on the drain gutter side portions of the two cap members, respectively, from above. Drainage structure, each cap member is provided with a water guide passage for guiding drainage leaking from the contact portion between the cap member and the vertical frame to the upper surface of the cap member to the drain gutter side, and the water guide passage is provided A backflow prevention mechanism for preventing backflow of drainage from a drain gutter is provided.

According to this configuration, the drainage leaked from the contact portion between the cap member and the vertical frame to the upper surface of the cap member is
It is led to the drain gutter through the water passage. Conversely, the drainage of the drain gutter is prevented from flowing back to the upper surface of the cap member by the backflow prevention mechanism provided in the water passage. For this reason, when the drainage gutter is full, the drainage that has leaked to the upper surface of the cap member flows down to the drainage gutter after the water-filled state is eliminated.

In this case, the backflow prevention mechanism has a valve element for opening and closing the narrow portion of the water guide passage, and a float for holding the valve element and floating on the drainage collected in the drain gutter to open and close the valve element. Is preferred.

According to this configuration, when the water level of the drainage from the drainage gutter is low (there is no drainage), the float descends and the valve body is opened to allow the drainage to flow down. , The float rises and closes the valve body to prevent backflow of drainage. That is, a check valve is formed between the valve body and the constricted portion (valve seat), and the water passage can be opened and closed according to the water level of the drainage water in the drainage gutter.

Similarly, the backflow prevention mechanism preferably has a hose connected to the downstream end of the narrow portion of the water passage, and a float attached to the downstream end of the hose and floating on the drainage collected in the drain gutter.

[0010] According to this configuration, when the water level of the drainage of the drainage gutter is low (there is no drainage), the float descends, and the drainage flows down according to the gradient of the hanging hose. vice versa,
When the water level of the drainage is high, the float rises, the hose bends in a “U” shape between the constriction and the float, and its downstream end rises above the drainage drain. That is, the downstream end of the hose separates from the drain surface of the drain gutter, and prevents the inflow (backflow) of the drain.

Similarly, the backflow prevention mechanism may include an opening valve body which is in close contact with the downstream end of the narrowed portion of the water passage and opens the narrowed portion with the weight of drainage accumulated on the upper surface of the cap member.
preferable.

According to this configuration, when the water level of the drainage gutter is low (there is no drainage), the opening valve body separates from the constricted portion due to the weight of the drainage collected on the upper surface of the cap member, and the drainage flows down. Allow. Conversely, when the water level of the drainage is high, the water pressure of the drainage in the drainage gutter exceeds the weight of the drainage collected on the upper surface of the cap member, causing the opening valve body to adhere to the narrowed portion,
Prevent drainage backflow. That is, the check valve is formed between the stenosis portion and the open valve body with the stenosis portion as a valve seat.

[0013] Similarly, it is preferable that the backflow prevention mechanism has a closing valve body disposed at the downstream end of the constricted portion of the water guide passage and closed by the drainage flowing backward in the water guide passage to close the constricted portion.

According to this configuration, when the water level of the drainage is high, the blockage of the stenosis is closed by the drainage flowing backward through the water guide passage, and the backflow of the drainage is prevented. That is, a check valve is formed between the stenosis part and the closing valve body with the stenosis part as a valve seat.

Further, another drainage structure for a bathroom according to the present invention is provided below a fitting provided at a doorway of the bathroom and receives drainage of a bathroom floor flowing toward the doorway, and both sides of the drainage gutter. A pair of cap members attached to the ends and closing the ends of the drainage gutters, and the drainage of the bathroom in which both vertical frames of the fittings abut against the drainage gutter-side portions of both cap members in a watertight manner from above. In the structure, each cap member is provided with a water guide passage for guiding drainage leaking to the upper surface from a contact portion between the cap member and the vertical frame to the drain gutter side, and the water guide passage is provided with a drainage passage therethrough. It is characterized by a weir mechanism that limits the amount to a very small amount.

According to this configuration, the drainage leaked from the portion of the seal member to the upper surface of the cap member is regulated by the weir mechanism, and is gradually guided to the drain gutter through the water guide passage. Similarly, when the drainage from the drainage gutter flows backward to the upper surface side of the cap member, the drainage guides the drainage little by little by the weir mechanism. In this case, since the drainage gutter is filled with water in a short time, even if the drainage flows backward in the water passage, the flow stops before overflowing to the upper surface of the cap member and returns to the drainage gutter.

In this case, it is preferable that the weir mechanism has a water permeable member that is provided in the water passage and restricts the passage of drainage so as to ooze out.

According to this configuration, the weir mechanism can be configured with a very simple structure by the water permeable member in the water guide passage.

Similarly, it is preferable that the weir mechanism has a screw member loosely screwed into a narrow portion of the water passage.

According to this configuration, the weir mechanism can be formed in the spiral minute passage formed between the root of the screw member and the inner peripheral surface of the constriction. In this case, it is possible to easily finely adjust the passing flow rate by the screwing dimension of the screw member to the constricted portion.

The cap member is watertightly attached to the drain gutter via a sealer, and the weir mechanism has a linear cutout formed in a portion of the sealer facing the downstream end of the water guide passage so as to close it. It is preferred to have

According to this configuration, the amount of drainage flowing in and out of the drainage passage and the drainage gutter is regulated by the cut portion.

In the drainage structure according to any one of the first to eighth aspects, at least one of the pair of cap members is integrally formed with a drainage pipe connection port for guiding drainage in the drainage gutter to a drainage pipe on the downstream side. Is preferred.

According to this configuration, since the drain pipe connection port is formed integrally with the cap member, a relatively large drain pipe can be connected by forming the drain pipe connection port large. For this reason, the full state of the drain gutter can be eliminated in a relatively short time.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A drainage structure for a bathroom according to an embodiment of the present invention will be described below with reference to the accompanying drawings. This bathroom is composed of a unit bath of a barrier-free design in which there is no step between the bathroom and the undressing room. FIG. 1 is a longitudinal sectional view around the entrance of the bathroom (unit bath). As shown in the figure, a single sliding door 1 composed of a sliding door main body 2 and a frame body 3 that supports the sliding door body 2 so as to be opened and closed is provided at the entrance of the bathroom A so as to be supported by the large pulling C. in this case,
The waterproof pan (bathroom floor) 4 of the bathroom A, the lower frame 12 of the frame 3 described later, and the wooden floor 5 of the undressing room B are arranged substantially flush, that is, so as not to have a step.

Originally, drainage in the washing area of the bathroom A is drained from a main drainage fitting (not shown) provided on the bathtub side of the waterproof pan 4. However, when hot water (drainage) overflows from the bathtub, part of the drainage flows to the lower frame 12 side. Therefore, corresponding to the floor structure having no step, the lower frame 1 is placed on the waterproof pan 4.
2 is received by the lower end of the sliding door main body 2 (actually, the AT material 19 provided between the lower end of the sliding door main body 2 and the lower frame 12). Lower frame 1
After being received at 2, the water flows down to the drain gutter 6 and is further guided from the drain gutter 6 to the drain pipe 7. The drain gutter 6 extends in parallel with the lower frame 12 and is disposed at a position offset from the lower frame 12 toward the waterproof pan 4 so as to escape from the pulling C.

The waterproof pan 4 is integrally formed with rising pieces on its four circumferences. The rising pieces are cut off at a portion facing the lower frame 12 (see FIG. 2), so that predetermined portions are formed. It faces the lower frame 12 with a gap. A bridge plate 8 is bridged between the waterproof pan 4 and the lower frame 12 so as to close this gap. On the lower surface of the waterproof pan 4, a large number of rib pieces are formed in a protruding manner in a lattice shape. The drain gutter 6 is provided with a first first rib piece 4a and a second rib piece 4a located in parallel with the lower frame 12 side. It is fixed to the second rib piece 4b.

The frame 3 of the single sliding door 1 includes an upper frame 11 and a lower frame 12.
The sliding door body 2 is constructed by incorporating a panel body 16 made of glass or the like into a frame 15 in which a ventilation port 15a is formed at a lower portion. The lower frame 12 includes a lower frame attachment 12a and a lower frame main body 12b. The lower frame attachment 12a is seated on the lower frame main body 12b and supports one end of the bridge plate 8 described above. The lower frame main body 12b has a rail piece portion 17 for guiding the opening and closing of the sliding door main body 2, and supports the lower frame attachment 12a at a half on the waterproof pan 4 side. The bottom portion 18 of the lower frame body 12b is inclined toward the drain gutter 6, and the drain water flowing from the waterproof pan 4 is
Upper surface of bridge plate 8 and lower frame attachment 1
It flows on the upper surface of 2a, further flows from the rail piece portion 17 into the bottom portion 18 of the lower frame body 12b, and flows down from this bottom portion 18 to the drain gutter 6. A lower frame main body 12b is provided between the lower frame main body 12b and the lower end of the sliding door main body 2 on the waterproof pan 4 side.
An AT material 19 is provided so as to be supported by the base material, and the AT material 19 minimizes drainage flowing into the bottom portion 18 of the lower frame body 12b.

The drain gutter 6 has an upper end opening 21 facing the space between the end of the waterproof pan 4 and the lower frame main body 12b, and is made of a shaped material or the like. The drain gutter 6 includes a gutter main body 22 having a substantially rectangular cross section, an upper edge receiving portion 23 on the lower frame 12 side and a fixing piece 24 on the waterproof pan 4 side that constitute the upper end opening 21, and a gutter main body 22. Waterproof pan 4 horizontally from the middle position
The reinforcing piece 25 extending to the side is integrally formed.
In addition, a plurality of reinforcing plates 26 are stretched between the base of the upper edge receiving portion 23 and the fixing piece 24 in the longitudinal direction of the drain gutter 6.

In this case, the drain gutter 6 is screwed to the lower frame main body 12b at the upper edge receiving portion 23 so as to receive the lower frame main body 12b from below, and furthermore, the fixing piece portion 24 fixes the first rib piece 4 of the waterproof pan 4.
a and screwed to the second rib piece 4b by the reinforcing piece 25. In this case, it is not always necessary to fix the reinforcing piece 25 to the second rib piece 4b.
A first seal member 27 is interposed between the upper edge receiving portion 23 and the lower frame main body 12b, and a second seal member 28 is interposed between the fixed piece portion 24 and the first rib piece 4a. I have. As will be described later in detail, a third seal member 29 is interposed between the lower end of the vertical frame 13 and the fore cap (cap member) 30, and the first, second, and third seal members 27, 2
8, 29, the upper end opening 21 of the drain gutter 6 is sealed over four circumferences.

As shown in FIGS. 1 and 2, small caps 30, 30 are attached to both ends of the drain gutter 6 in the longitudinal direction with a sealer 31 described later interposed therebetween in a watertight manner. And the drain gutter 6 of each fore cap 30
The lower end of the vertical frame 13 is in water-tight contact with the third seal member 29 interposed on the upper surface on the side.

Since the first seal member 27 and the second seal member 28 are interposed on the contact surfaces between the flat surfaces, they exhibit stable sealing properties. However, in the third sealing member 29, the upper surface of the fore cap 30 on the drain gutter 6 side is a curved surface, and the third sealing member 29 is interposed on the contact surface between the curved surfaces, so that the sealing performance is not stable. Therefore, in consideration of the leakage of the drainage from the third seal member 29, a mechanism for smoothly guiding the leaked drainage to the drain gutter 6 is incorporated in each of the small caps 30.

FIG. 3 shows the small cap 30 with the sealer 31 mounted. A water guide passage 41 that takes in drainage leaking from the portion of the third seal member 29 to the upper surface of the small cap 30 and guides the water to the drain gutter 6.
A drain pipe connection port 42 connected to the drain pipe 7 and a drain flow path 43 for guiding the drainage of the drain gutter 6 to the drain pipe connection port 42 are integrally formed (molded product such as resin). Is provided with a backflow prevention mechanism 44 for preventing backflow of drainage from the drain gutter 6.

The water guide passage 41 has a water collecting portion 51 opened at the center of the upper surface of the small cap 30, a narrowed portion 52 connected to the downstream end (lower end) of the water collecting portion 51, and a downstream end (lower end) of the narrowed portion 52. And an expanding portion 53 communicating with the drain gutter 6. The third seal member 2 is provided on the upper surface of the small cap 30 on the inner side (drain gutter 6 side) with the water collecting portion 51 interposed therebetween.
The seal surface portion 55 with which the lower end of the vertical frame 13 abuts via the curve 9 is formed in a curved shape, and a barrier portion 56 for preventing drainage from flowing out is formed on the outside. Further, the constricted portion 52 extends in the up-down direction, and the lower portion of the member constituting the constricted portion 52 projects into the expanded portion 53. The expanding portion 53 is a vertical rectangular space, and a side portion of a member constituting the expanding portion 53 projects into the drain gutter 6. Further, a drain passage 43 is provided at a lower portion of the widening portion 53.
Is formed. Third seal member 2
The drainage leaked from the portion 9 to the upper surface of the fore-cap 30 flows down to the drainage gutter 6 and the drainage channel 43 through the water collecting part 51, the narrowed part 52, and the expanding part 53.

The backflow prevention mechanism 44 has a valve element 61 inserted into the constriction part 52 and a float 62 supporting the valve element 61, and the float 62 is accommodated in the expanding part 53. The valve body 61 includes a pin-shaped guide portion 61a and a guide portion 61a.
And a tapered valve body 61b connected to the lower end of the float 62. The float 62 is erected at the center of the upper surface of the float 62. The float 62 is formed in a bell shape with a hollow inside and an open lower end. The float 62 moves up and down (up and down) according to the water level of the drainage water from the drain gutter 6 while being guided by the peripheral wall surface of the expanding portion 53. The float 62 may be formed of a hollow body (for example, a square or a sphere) having no open portion, a foam, or the like. Further, it is preferable that the lower end portion of the constricted portion 52 that receives the valve main body 61b (which functions as a valve seat in this case) has a tapered shape complementary to the valve main body 61b.

A state in which no drainage is accumulated in the drainage gutter 6,
Or, if the water level is low,
2, the valve body 61b of the valve body 61 is separated from the lower end of the narrowed portion 52, and the drainage on the upper surface of the small cap 30 is
After flowing through the water collecting part 51 and the constricted part 52, it flows down to the expanding part 53. From this state, drainage that cannot be swallowed by the drain pipe 7 accumulates in the drain gutter 6, and when the water level in the drain gutter 6 rises, the float 62 rises, and the valve body 61 b is pressed against the lower end of the narrowed portion 52, thereby causing the narrowed portion. The part 52 is closed. This allows
Drainage in the drain gutter 6 can be prevented from flowing back to the water collecting part 51 through the constricted part 52.

When the stenosis portion 52 is closed by the valve element 61, the drainage of the water collecting portion 51 is also stopped. However, the rise in the water level in the drain gutter 6 is when a large amount of drainage flows into the drain gutter due to overflow of the bathtub, and the like.
This is a state in which the drain pipe cannot be swallowed, and this state is resolved in a short time. For this reason, the drainage from the upper surface of the small cap 30, that is, the water collecting portion 51 does not overflow.

As described above, according to the present embodiment, the drainage leaked from the portion of the third seal member 29 to the upper surface of the fore-cap 30 can be smoothly flowed down to the drain gutter 6 by the water guide passage 41. At the same time, the backflow prevention mechanism 44 can prevent the backflow of the drainage from the drain gutter 6 side to the upper surface of the small cap 30. Therefore, the sealing performance around the drain gutter 6 can be improved. In addition, the drain pipe connection port 42 for connecting the drain pipe 7 is provided with the small cap 3.
The drainage pipe connection port 42 can be formed to have a relatively large diameter without being restricted by the width of the drainage gutter 6, and the drainage in the drainage gutter 6 is smoothly drained. be able to.

Next, another embodiment of the backflow prevention mechanism and a plurality of embodiments of a weir mechanism having a function similar thereto will be described with reference to FIGS. 4 to 9 which are schematically drawn.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, a backflow prevention mechanism 44 includes a flexible hose 71 connected to the lower end of a constricted portion 52 and a downstream side of the hose 71. And a spherical float 72 attached thereto. In a state where no drainage is accumulated in the drain gutter 6 or a state where the water level of the drainage is low, the hose 71 hangs obliquely downward, and the drainage of the water collecting part 51 is drained from the narrow part 52 through the inside of the hose 71. It flows down to the gutter 6 side. On the other hand, when the drainage is accumulated in the drain gutter 6 and the water level is high, the hose 7
The downstream end of 1 is lifted by a spherical float 72 and the hose 71 becomes "U" shaped. When the hose 71 has a “U” shape, the downstream end of the hose 71 protruding from the spherical float 72 separates from the water surface and prevents the inflow of drainage.

With such a configuration, the backflow prevention mechanism 44 can be configured extremely easily without the need for a valve element or the like. In addition, it is preferable that the spherical float 72 is formed of a foam such as styrene foam. In addition, expansion part 5
3 and the drain channel 43 may be integrated.

FIG. 5 shows a third embodiment of the present invention. In this embodiment, a backflow prevention mechanism 44 is provided with a thin plate (open valve body) 73 applied to the lower end of a narrowed portion 52 from the widening portion 53 side. have. The thin plate 73 is made of, for example, a thin rubber plate, and has a base embedded in the top wall portion of the expanding portion 53. When the drainage accumulates in the water collecting part 51, the thin plate 73 is bent downward by the weight of the drainage to open the constriction part 52, thereby allowing the drainage to flow down. On the other hand, when the drainage does not accumulate in the water collecting part 51, even if the water level of the widening part (drainage gutter 6) 53 rises, the thin plate 73 is in close contact with the lower end of the narrowing part 52,
2 is blocked, and the backflow of drainage is prevented.

FIG. 6 shows a fourth embodiment of the present invention. The backflow prevention mechanism 44 of this embodiment has an ultrathin plate (blocking valve element) 74 provided at the lower end of the constriction 52. I have. The ultra-thin plate 74 is made of, for example, a film piece,
The base is adhered to the top wall portion of the expanding portion 53 and slightly bent downward by its own weight. In this configuration, the drainage from the water collecting part 51 is allowed to flow down, but when the water level on the expanding part 53 rises, the ultra-thin plate 74 is pushed by the drainage and the constricted part 52
Close to the lower end of the tube, preventing backflow of drainage.

As described above, the thin plate 73 and the extremely thin plate 74
Has a function of a check valve having the lower end of the constricted portion 52 as a valve seat, and has a very simple structure to prevent the back flow of drain water from the drain gutter 6 side. In addition, also in 3rd and 4th embodiment, integration of the expansion part 53 and the drainage flow path 43 is possible.

FIG. 7 shows a fifth embodiment of the present invention. In this embodiment, a weir mechanism 45 is used instead of the backflow prevention mechanism 44.
Is provided. The weir mechanism 45 is configured by forming a linear cutout portion 75 facing the expanding portion 53 in the sealer 31 attached to the fore cap 30.
The cut portion 75 of the sealer 31 regulates a small amount of drainage between the expanding portion 53 and the drain gutter 6. For this reason, when the drainage of the drain gutter 6 is at a water level lower than the position of the cut portion 75, the water flows out from the expanding portion 53 so as to bleed into the drain gutter 6, and conversely, at a water level higher than the position of the cut portion 75. In some cases, the water flows from the drain gutter 6 so as to bleed into the expanding portion 53.

In this case, the inflow of the drainage from the drainage gutter 6 to the widening portion 53 is very small, and it takes a sufficient time to reach the amount overflowing from the upper surface of the small cap 30. The water level on the side drops and the drainage does not overflow from the upper surface of the fore cap 30.

FIG. 8 shows a sixth embodiment of the present invention. The weir mechanism 45 of this embodiment comprises a water permeable member 76 loaded in the expanding portion 53. The water permeable member 76 is made of, for example, a water permeable foam material, and similarly to the above-described embodiment, restricts ingress and egress of drainage between the constricted portion (expanded portion 53) 52 and the drain gutter 6. doing. The water permeable member 7
6 may be loaded in the constriction 52.

As described above, according to the weir mechanism 45 of the fifth and sixth embodiments, the drainage from the upper surface of the small cap 30 can be guided to the drain gutter 6 with a simple structure.
Drainage from the drain gutter 6 can be prevented from overflowing from the upper surface of the small cap 30.

FIG. 9 shows a seventh embodiment of the present invention. The weir mechanism 45 of this embodiment is composed of a screw (preferably a screw) 77 loosely screwed into the narrowed portion 52 from above. When the screw 77 is screwed into the constricted portion 52 having no female screw formed on the inner peripheral surface, an extremely thin spiral passage is formed between the inner peripheral surface of the constricted portion 52 and the valley of the screw 77. That is, this passage regulates the inflow and outflow of drainage between the water collecting part 51 and the expanding part 53 to a very small amount.

In this configuration, the length of the spiral passage changes depending on the screwing dimension of the screw 77, and the frictional resistance of the drainage flowing therethrough changes, so that the amount of the drainage can be finely adjusted.

[0051]

As described above, according to the bathroom drainage structure of the present invention, drainage leaks to the upper surface of the cap member from the contact portion between the lower end of the vertical frame and the upper surface of the cap member in watertight contact. In any case, the leaked drainage can be smoothly guided into the drainage gutter. Conversely, even when the drain gutter is full, it is possible to prevent or suppress the backflow of drain water from the drain gutter to the upper surface of the cap member. For this reason, the sealing performance of this portion can be improved.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view around a bathroom doorway to which a bathroom drainage structure according to a first embodiment of the present invention is applied.

FIG. 2 is an exploded perspective view around the drain gutter showing a positional relationship between the drain gutter and the vertical frame according to the first embodiment.

FIG. 3 is a structural diagram around a small cap according to the first embodiment.

FIG. 4 is a structural diagram around a small cap according to a second embodiment of the present invention.

FIG. 5 is a structural diagram around a small cap according to a third embodiment of the present invention.

FIG. 6 is a structural diagram around a small cap according to a fourth embodiment of the present invention.

FIG. 7 is a structural diagram around a small cap according to a fifth embodiment of the present invention.

FIG. 8 is a structural diagram around a small cap according to a sixth embodiment of the present invention.

FIG. 9 is a structural diagram around a small cap according to a seventh embodiment of the present invention.

[Explanation of symbols]

1 single sliding door, 2 sliding door body, 3 frame, 4 waterproof pan,
6 drain gutter, 7 drain pipe, 12 lower frame, 13 vertical frame, 2
9 Third seal member, 30 small cap, 31 sealer, 41 water passage, 42 drain pipe connection port, 44 backflow prevention mechanism, 45 weir mechanism, 51 water collection section, 52 constriction section, 53 expansion section, 61 valve body, 62 float, 71
Hose, 72 spherical float, 73 thin plate, 74 ultra-thin plate, 75 notch, 76 permeable member, 77 screw, A
Bathroom, dressing room B

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ken Himeno 4024 Mikkaichi, Kurobe City, Toyama Prefecture (72) Inventor Kiyohide Hirano 1-9-22 Shinkanaya, Uozu City, Toyama Prefecture (72) Inventor Yoshinobu Kuramachi Kurobe, Toyama Prefecture 1313-1 Horikiri, Ichigo (72) Inventor Shigeto Nakayama 1010 Ippongi, Toyama City, Toyama Prefecture Within Hitachi Chemical Unit Co., Ltd. (72) Shinji Kawai 1010 Ippongi, Toyama City, Toyama Prefecture Hitachi Chemical Unit Co., Ltd.

Claims (10)

[Claims] 1. A drain gutter disposed below a fitting provided at a doorway of a bathroom for receiving drainage of a bathroom floor flowing toward the doorway, and a drain gutter attached to both outer ends of the drain gutter. A pair of cap members for closing the ends of the bathroom, drainage structure of the bathroom in which both vertical frames of the fittings abut against the drainage gutter side portion of both cap members from the upper side, respectively, Each cap member is provided with a water guide passage for guiding drainage leaking from the contact portion between the cap member and the vertical frame to the upper surface of the cap member to the drain gutter side, and the water guide passage includes the drainage passage. A drainage structure for a bathroom characterized by a backflow prevention mechanism for preventing backflow of drainage from a gutter. 2. The valve according to claim 1, wherein the backflow prevention mechanism includes a valve body that opens and closes a constricted portion of the water passage, and a float that holds the valve body and floats on drainage collected in the drain gutter to open and close the valve body. The drainage structure for a bathroom according to claim 1, comprising: 3. The backflow prevention mechanism has a hose connected to a downstream end of a narrow portion of the water passage, and a float attached to a downstream end of the hose and floating on drainage collected in the drain gutter. The drainage structure for a bathroom according to claim 1, wherein: 4. The backflow prevention mechanism has an opening valve body that is in close contact with a downstream end of the narrowed portion of the water passage and that opens the narrowed portion with the weight of drainage accumulated on the upper surface of the cap member. The drainage structure for a bathroom according to claim 1, wherein: 5. The backflow prevention mechanism is provided at a downstream end of a narrow portion of the water passage, and has a closing valve body that is pushed by drainage flowing backward in the water passage and closes the narrow portion. The drainage structure for a bathroom according to claim 1, wherein: 6. A drain gutter disposed below a fitting provided at a doorway of a bathroom for receiving drainage of a bathroom floor flowing to the doorway side, the drainage gutter being attached to both outer ends of the drainage gutter. A pair of cap members for closing the ends of the bathroom, drainage structure of the bathroom in which both vertical frames of the fittings abut against the drainage gutter side portion of both cap members from the upper side, respectively, Each cap member is provided with a water guide passage that guides drainage leaked from the contact portion between the cap member and the vertical frame to the upper surface of the cap member to the drain gutter side. A drainage structure for the bathroom, characterized by a weir mechanism that limits the amount of water to a very small amount. 7. The drainage structure for a bathroom according to claim 6, wherein the weir mechanism has a water permeable member interposed in the water passage and restricting the passage of drainage so as to protrude. 8. The drainage structure for a bathroom according to claim 6, wherein the weir mechanism has a screw member loosely screwed into a narrow portion of the water passage. 9. The cap member is attached to the drain gutter through a sealer in a watertight manner, and the weir mechanism is formed at a portion of the sealer facing the downstream end of the water passage so as to close the water passage. The drainage structure for a bathroom according to claim 6, further comprising a linear cut portion formed in the bathroom. 10. A drain pipe connecting port for guiding drain water in the drain gutter to a downstream drain pipe is formed integrally with at least one of the pair of cap members. 9. The drainage structure for a bathroom according to any one of 9 above.