JP2005314997A - Drain trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain trap rapidly draining bath tub waste water while treating both bathtub waste water and waste water for a cleaning site. <P>SOLUTION: In a trap body collecting drain from a washing site and a bath tub site, and a drain trap having a drain port draining inflow drain to the outside, an inflow port opened at the upper side and leading drain of the washing spot washing site water stagnation section having a water sealing cylinder having a cylindrical shape with upper and lower open ends hung down from the inflow port and a sealing bowl loosely outwardly fit with the sealing cylinder, and an intake port provided at the downstream than the washing site water reservoir of the trap body side face and where an intake port connected to the bath tub drain pipe feeding drain from the bathtub and the bathtub draining part forming the bath tub drain passage guiding the bathtub inflow drain from the intake port to the drain port are provided. For more preferred means, the drain part of the bathtub guides the bathtub drain to the drain port while keeping the flow passage in the opened state while urging by the kinetic pressure of the bathtub drain keeping the flow passage in the opened state, and after the bathdrain is discharged in the finishing state, a flow passage opening/closing mechanism returning the bathtub draining passage to the closed state is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a drain trap that is provided in a bathroom unit or the like and collects both bathtub drainage and washing ground drainage through different paths, and particularly relates to a drain trap that processes bathtub drainage at high speed.

  There are at least two types of drainage used and discharged in bathroom units, ie, drainage from a bathtub and drainage from a washing place. And in order to prevent that the odor and gas from a drain pipe enter the bathroom in the drain pipe which drains these, a drain trap is provided.

  Normally, these two drainage pipes are designed to reduce the cost by reducing the number of members and to facilitate maintenance, and the drainage trap is a type that serves as both a bathtub drainage trap and a washroom drainage trap. Are integrated into one.

  An example of such a conventional drain trap is shown in FIG. FIG. 11 shows a longitudinal section of a conventional drain trap 110. The drain trap 110 is attached to the bottom surface of the drain recess 130 of the waterproof pan 102 so as to protrude downward from the waterproof pan 102.

  The drain trap 110 includes a trap body 111, a cover portion 112, a mounting flange 113, a water seal 114, a hair catcher 115, a U packing 116, and a packing 117.

  The trap body 111 is formed with a sealed water reservoir 111a having a predetermined height in the center on the lower side, and a drainage elbow 120 that collects drainage from the bathtub mounting portion 104 communicates with the lower portion of the sealed water reservoir 111a. A bathtub drainage inlet 111b connected via the pipe 123 is formed.

  The trap body 111 has a drain port 111c so as to communicate with the upper side of the sealed water reservoir 111a. A cover portion 112 having an opening at the center is attached to the upper portion of the trap body 111.

  The attachment flange 113 has the upper end side flange portion 113 a installed on the U-packing 116 attached to the opening of the drain recess 130, and the central portion of the attachment flange 113 via the opening of the cover portion 112. A sealing cylinder 114 inserted into the sealing water reservoir 111 a of the trap body 111 is supported via a packing 117 around the opening on the lower side.

  The hair catcher 115 has a large number of small openings and serves as a drainage inlet of the drain trap 110. The top surface of the hair catcher 115 is substantially flush with the top surface of the flange portion 113a. It is placed in a state.

  On the other hand, the drainage elbow 120 is fitted into a drainage elbow mounting opening 125 whose flange surface 121 is formed in the waterproof pan 102, and the bathtub drainage hole 121 a of the flange surface 121 is connected to the drainage hole 107 b of the bathtub 107 and the drainage fitting 122. Connected through. The end of the drainage elbow 120 opposite to the flange surface 121 is connected to a bathtub drainage water intake port 111 b on the side surface of the trap body 111 of the drainage trap 110.

  Next, the flow of drainage in the conventional drain trap 110 will be described. As shown by W1 in FIG. 11, the wastewater generated in the washing place 103 is collected in the drainage recess 130 and is stored in the sealed water reservoir 111a of the trap body 110 via the hair catcher 115 and the sealing cylinder 114 of the drainage trap 110. After being discharged, it overflows from the upper end E side of the sealed water reservoir 111a and is discharged out of the bathroom from the drain port 111c through the drain pipe 124.

  Further, the drainage in the bathtub 107 is collected in the drainage elbow 120 from the drainage hole 107b via the drainage fitting 122, and then connected to the drainage trap 110 via the communication pipe 123, as indicated by W2 in FIG. It is poured into the sealed water reservoir 111a. And when it flows into the sealed water reservoir 111a, the hand going to the sealed water tube 114 is blocked and cannot go straight, and after detouring to the lower side of the sealed water tube 114 and the outside of the side surface, it rises along the outside of the side surface of the sealed water tube 114, By following a detour route of overflowing from the upper end E side, the water is discharged out of the bathroom from the drain port 111c through the drain pipe 124.

  By the way, since the drainage from a bathtub has many drainage of one time and requires comparatively long time, there exists a request | requirement of wanting to complete drainage in as short time as possible. However, in the conventional drainage trap, as described above, the water storage section including the sealing cylinder and the sealing water reservoir becomes an obstacle to prevent this.

  The simplest method for solving this problem is to separate the bathtub drainage and the washroom drainage, but this certainly leads to an increase in cost and must be adopted. In addition, the size of the downstream outlet and the pipe diameter of the drain pipe path are generally determined, and the pipe diameter cannot be easily increased.

  Therefore, in order to realize high-speed drainage, in one drain trap, a reservoir for the bathtub drainage is provided separately from the reservoir for the washroom drainage, and the bathtub drainage channel is connected to the washwater drainage reservoir. A configuration that ensures high-speed drainage by avoiding it is conceivable.

  Although not intended for high-speed drainage, such a configuration has been proposed. One is provided with a basin drainage reservoir upstream of the washroom drainage basin (see, for example, Patent Document 1). However, in this configuration, the wash water drainage reservoir does not allow high-speed drainage by blocking the bathtub drainage flow path, but also passes against the intention of not allowing other reservoirs to pass through, and the washwater drainage is not allowed to pass through the bathtub. There is a problem that even if it is possible to prevent backflow to the side, it is not possible to prevent backflow of bathtub drainage to the washing area.

In addition, there is a bathtub drainage reservoir provided on the downstream side of the washroom drainage reservoir (see, for example, Patent Document 2). However, in this configuration, the washing area drainage performance is significantly reduced because the notch for washing area drainage cut into the sealed water reservoir is narrow, or the drainage port is completely separated into the washing area drainage channel and the bathtub drainage channel. Therefore, the cross-sectional area of each flow path becomes small, and there is a problem that the drainage speed is rather lowered in both the washing place drainage and the bathtub drainage.
Japanese Unexamined Patent Publication No. 2004-44318 (5th page, FIG. 1) JP 2004-36144 A (page 6-7, FIGS. 1 and 4)

  The present invention has been made in consideration of the above-described circumstances, and an object of the present invention is to provide a drain trap that drains bathtub drainage at high speed while treating both bathtub drainage and washing ground drainage.

  In order to solve the above-described problem, the drain trap according to the present invention includes, as described in claim 1, a trap main body that collects drainage from a washing place and drainage from a bathtub by different paths, and drained wastewater. A drainage trap having a drainage outlet connected to a drainage main pipe for draining the outside to the outside, an inlet opening at the top to introduce the wastewater of the washing place, an upper and lower end open cylindrical sealing cylinder hanging from the inlet, A wash basin water reservoir provided with a water seal bowl that is externally fitted in the water seal cylinder, and a tub drain pipe that is provided on the downstream side of the wash basin water reservoir on the side of the trap body and feeds waste water from the bathtub. And a bathtub drainage section that forms a bathtub drainage channel that guides the inflowed bathtub drainage from the intake to the drainage outlet.

  Preferably, as described in claim 2, the bathtub drainage section is biased by the dynamic pressure of the bathtub drainage to place the flow path of the bathtub drainage in an open state and guide the bathtub drainage to the drain outlet. And having a channel opening / closing mechanism that is de-energized when the bathtub drainage ends and returns the bathtub drainage channel to a closed state, and forms a water reservoir in which the drainage stays in the bathtub drainage pipe in the closed state, and the washing ground drainage Configured to prevent backflow.

  More preferably, as described in claim 3, the bathtub drainage section includes, on the side surface of the bathtub drainage channel, a diverting hole that divides the bathtub drainage in the bathtub drainage channel out of the channel. can do. Thereby, it can prevent that the sealing water in a trap main body runs out, and can ensure a sealing surface.

  In particular, in the apparatus provided with the above-described channel opening / closing mechanism, as described in claim 4, the diversion holes are provided on the downstream side of the channel opening / closing mechanism when closed.

  On the other hand, you may comprise the said bathtub drainage part and the said sealed water bowl so that attachment or detachment is possible, as described in Claim 5.

  Further, as described in claim 6, the flow path opening / closing mechanism can be configured to be immersed in the drainage when closed.

  According to the drain trap according to the present invention, the bathtub drainage can be processed at a high speed while treating both the bathtub drainage and the washing ground drainage.

  In the present invention, since the direction of the flow path is changed many times and the cross-sectional area of the flow path is not reduced, it is discharged directly to the outside, so that an effect of realizing high-speed drainage is obtained. .

  An embodiment of a drain trap according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic plan view showing an arrangement relationship of a bathroom unit 1 including a drain trap 10 according to the present embodiment.

  The floor of the bathroom unit 1 is formed of a waterproof pan 2 integrally formed of a resin material, and a bathtub 7 is placed on one side thereof, and the remaining part is a washing place 3 where a bather can wash his body.

  The washing place 3 is formed in a mortar shape with the upper edge of the outer periphery being formed at the same height, and the floor surface through which the drainage flows is located near the outer edge of the waterproof pan 2 and toward the drain recess 30 provided at the bottom of the washing place 3. The flowing water surface S1 is inclined so as to descend.

  The drain recess 30 forms a recess of the washing place 3, and the drain trap 10 is suspended from the drain pan 30 so as to protrude from the back surface of the waterproof pan 2. The washing ground drainage flows into the drainage trap 10 from the inlet (not shown) provided at the top of the drainage trap 10 down the flowing water surface S1. A trap cover 31 is usually placed on the top of the drain recess 30 to be covered.

  A drainage hole 7b is formed in the lowermost part of the bowl-shaped bathtub 7, and is connected to a flange part 21 that covers one end of the drainage elbow 20 via a drainage fitting (not shown). The other end of the drain elbow 20 is connected to a bathtub drain pipe 23 that communicates the bathtub drain to the drain trap 10.

  This bathtub drain pipe 23 is connected to the drain trap 10 on the side of the drain trap 10 on the downstream side of the inflow port, and the bathtub drain via the bathtub drain pipe 23 is discharged from the drain main pipe 24 to the outside of the bathroom unit like the washroom drain. Is discharged.

  Hereinafter, the overall configuration of the drain trap will be described with reference to the drawings. As shown in FIGS. 2 and 3, the drain trap 10 includes a trap body 11, a cover portion 12, a mounting flange 13, a sealing tube 14, a hair catcher 15, a U packing 16, and a sealing bowl 17. The packing 18 and the bathtub drainage section 40 are configured.

  The trap body 11 is a substantially cylindrical container having an upper opening, and a sealing bowl 17 having a predetermined height is placed slightly in front of the center on the lower side, and a trap downstream of the sealing bowl 17 is placed downstream. On the side surface of the main body 11, a bathtub drainage water intake port 11 b to which a bathtub drainage pipe 23 that collects drainage from the bathtub 7 is connected is formed. This is to prevent the bath drainage from obstructing the flow due to the sealing bowl 17 becoming an obstacle. Further, the upper opening serves as a water intake through which drainage from the washing place 3 flows.

  Further, the trap body 11 is formed with a drain port 11 c so as to communicate with the upper side of the sealing bowl 17, and a drain main pipe 24 is connected thereto. Further, a cover portion 12 having a female screw portion 12a formed around the opening portion on the slightly upstream side is attached to the upper portion of the substantially cylindrical trap body 11.

  A mounting flange 13 for suspending the sealing cylinder 14 from the drain recess 30 is placed on the upper part of the trap body 11. The mounting flange 13 includes a short cylindrical male screw portion 13a having a screw threaded on the outer periphery, a flange portion 13b extending substantially horizontally outward from the upper portion of the male screw portion 13a, and a mounting flange 13 in the middle of the male screw portion 13a. And an annular contact surface portion 13c protruding around the opening.

  As shown in FIG. 3, the mounting flange 13 has an upper end side flange portion 13 b placed on the U packing 16 attached to the opening edge of the drainage recess 30, and the center portion is an opening of the cover portion 12. The annular portion 14b of the sealing cylinder 14 that is dropped into the trap body 11 through the portion, is locked to the drain recess 30 and is inserted into the sealing bowl 17 of the trap body 11 is engaged with the contact surface portion 13c. It has been stopped. Accordingly, the drain trap 10 is configured by screwing the male screw portion 13a of the mounting flange portion 13 into the female screw portion 12a of the cover portion 12 and pressurizing the U packing 16 with the flange portion 13b of the mounting flange 13 and the cover portion 12. Attached to the waterproof pan 2.

  The sealed water bowl 17 is formed in a bottomed cylindrical shape, and constitutes a water storage part for washing place drainage in cooperation with the sealed water cylinder 14. In this embodiment, the sealing bowl 17 is detachably attached from the trap body 11. This is because a bathtub drainage portion 40 that is also detachably attached, which will be described later, can be taken in and out from the opening of the mounting flange 13.

  The sealed water bowl 17 is placed on the bottom surface of the trap body 11 by being guided by a protrusion or the like protruding in a ring shape circumscribing the sealed water bowl 17. Instead of this ridge, the sealing bowl 17 may be placed at a predetermined position by erecting a plurality of protrusions that are part of this ridge.

  As shown in FIGS. 3 and 4, the sealing cylinder 14 is arranged such that the lower end of the cylindrical portion 14 a opened up and down is disposed in the sealing bowl 17 and is expanded from the upper end of the cylindrical portion 14 a to the upper end side. An annular portion 14b, a position below the annular portion 14b, a plurality of flanges 14d provided on the side surface of the tubular portion 14a, and an annular packing 18 attached to the lower surface of the annular portion 14b It is formed.

  In addition, a plurality of columnar protrusions 14c are provided on the upper surface of the annular portion 14b so as to rotate the sealing cylinder 14 to be fixed to the mounting flange 12 and to attach the hair catcher 15 to a predetermined position.

  The hair catcher 15 has a net portion 15b formed in an outer ring portion 15a placed on the top of the annular portion 14b of the water seal tube 14, and a cylindrical inner ring portion 15c rises at the center of the net portion 15b. ing. Further, the outer ring portion 15a is provided with the same number of outer ring notches 15d as the columnar protrusions 14c, and has a shape that can be fitted onto the columnar protrusions 14c of the water sealing tube 14, and the outer ring notches 15d are sealed. The hair catcher 15 is attached to the drain trap 10 without being displaced by being externally fitted and dropped onto the columnar protrusion 14c of the water bottle 14.

  This hair catcher 15 is provided with a stagnation part 15e for removal, and this squeeze part 15e is a plate material having a substantially tear shape directed outward on the outer ring 15a so that it can be easily squeezed with a finger. It is formed.

  And the hair catcher 15 and the sealing cylinder 14 comprise the inflow port to the drain trap 19 of washroom drainage.

  The bathtub drainage part 40 is installed in the middle of the water-sealed bowl 17 and the drain outlet 11c, and is roughly composed of a lower bathtub reservoir part 41 and an upper nozzle part 42. For maintenance purposes, the bathtub drainage section 40 is desirably removable, and more preferably, the bathtub reservoir section 41 and the nozzle section 42 are also capable of being disassembled.

  As shown in the exploded perspective view of FIG. 4, the bathtub water reservoir 41 is composed of a container body 41a having an upper opening and a connection part 41b fitted into the bathtub drainage water intake port 11b, and the outer periphery of the connection part 41b. Is provided with a packing 41c for preventing water leakage and ensuring airtightness.

  The nozzle part 42 includes a frame 44 and a movable wall 45. The frame 44 is placed on the container main body 41a, communicates with the opening in the upper part of the container main body and forms a bathtub drainage opening Y, and side plates 44b erected on both side surfaces of the substrate 44a, 44b and a top plate 45c that connects the side plates 44b and 44b at the top. The side plates 44b and 44b are provided with diversion holes 44d for diverting a part of the drainage flow inside the nozzle portion 42 to the outside. The frame 44 formed in this way forms the washing ground drain opening A facing the upper part of the sealing bowl 17 and the drain opening H facing the drain port 11c in addition to the bathtub drain opening Y described above.

  The movable wall 45 is a plate-like member that is slightly larger than the bathtub drainage opening Y. The end of the sealed water bowl 17 is a fixed end, and the drainage outlet 11c side is the bathtub drainage opening Y and the washroom drainage opening A. It is attached to the substrate 44a as a free end that can freely move between the two. The movable wall 45 may be, for example, a flexible member such as rubber or elastomer, or a hard resin member. In the latter case, the substrate 44a is pivotally supported at the sealed bowl 17 side end.

  When there is no drainage from the bathtub, the movable wall 45 lies on the substrate 44 a by its own weight to cover the bathtub drainage opening Y, and allows the washing ground drainage opening A and the drainage opening H to communicate with each other. However, when there is drainage from the bathtub, it is biased by the dynamic pressure of the bathtub drainage, and the free end is displaced to the washroom drainage opening A side, opening the bathtub drainage opening Y and covering the washinghouse drainage opening A. The bath drain opening Y and the drain opening H are communicated.

  As described above, the movable wall 45 and the frame 44 in which the movable wall 45 is installed in this embodiment serve as a nozzle that discharges the wastewater toward the drainage outlet, as well as the wastewater from the washing place and the wastewater from the bathtub. The flow path opening / closing mechanism according to the present invention is formed by switching.

  FIG. 5 shows the drainage trap 10 with the bathtub drainage part 40 removed, and the part where the bathtub drainage water intake port 11b is connected to the connection part 41b of the container body 41 can be seen.

  The drain trap 10 according to the present embodiment is configured as described above, and the flow of drainage in the drain trap 10 will be described below.

  First, the flow of drainage during bathtub drainage will be described with reference to FIGS. 6 and 7. At the time of bathtub drainage, the bathtub drainage taken into the bathtub drainage inlet 11b from the bathtub 7 via the bathtub drainage pipe 23 flows into the container main body 41, and the flow is changed upward.

  At this time, the free end of the movable wall 45 is biased by the dynamic pressure of the bathtub drainage and is displaced toward the washing ground drain opening A to open the bathtub drain opening Y, while covering the washing ground drain opening A. Thereby, only the flow path of the bathtub drainage is secured, and the bathtub drainage is discharged to the drainage port 11c via the drainage port opening H without the pressure of the drainage being dispersed, and from the drainage main pipe to the outside of the bathroom unit 1 And released.

  In this way, the bathtub drainage is discharged directly to the outside without going through the wash basin, that is, without changing the flow path direction many times and without reducing the cross-sectional area of the flow path. Therefore, high-speed drainage can be realized.

  However, if the drain main pipe 24 descending from the drain trap 10 to the outside of the bathroom unit 1 flows in a full state, it may be sucked by siphon action and the sealed water may be cut off.

  Therefore, if a part of the bathtub drainage is diverted from the diversion holes 44d and 44d drilled in the side plates 44b and 44b and is retained in the drain trap, the wastewater drainage water is stored even if the drain main pipe 24 flows in a full state. It is possible to prevent the sealed water from being cut without being sucked. Even in this case, the sectional area of the diversion holes 44d is sufficiently smaller than the sectional area of the drain opening H, so that the bathtub drainage does not flow back to the washing area.

  When the drainage of the bathtub ends, the bias that caused the free end of the movable wall 45 to be displaced toward the washing drainage opening A side is released, so the free end of the movable wall 45 is displaced toward the bathtub drainage opening Y side by its own weight. Lie on the bathtub drain opening Y and cover it.

  Thereby, in the bathtub reservoir 41 and the bathtub drain pipe 23, drainage remains without being pulled by the drainage of the drain main pipe 24, thereby forming a reservoir part of the bathtub drainage, and gas and odor are generated in the bathtub. Inflow is prevented. Even if drainage occurs in the washing area, the bathtub drainage opening Y is obscured by the movable wall 45, so that the washing area drainage does not flow back to the bathtub side.

  Next, the flow of drainage at the time of washing place drainage will be described with reference to FIGS. At the time of washing place drainage, as shown in FIG. 8, the washing place drainage changes its direction after flowing down to the bottom of the trap body 11 via the hair catcher 15 and the sealing tube 14, and the sealing tube 14 and the sealing bowl 17 And finally overflows the sealed water bowl 17 beyond the upper end E of the sealed water bowl 17.

  Then, when the water level becomes higher than the substrate 44a of the nozzle part 42, as shown in FIG. 9, the washing ground drainage passes through the washing ground drain opening A in the nozzle part 42 and both side surfaces outside the nozzle part 42, and the drain outlet. It flows out to 11c, and is discharged | emitted from the drain main pipe to the bathroom unit 1 exterior.

  Also at this time, since the drainage port 11c is not divided in advance for bathtub drainage and for washing place drainage, the entire cross-sectional area of the pipe diameter can be effectively drained. Moreover, since the bathtub drainage opening Y is obscured by the movable wall 45, the washing ground drainage does not flow backward to the bathtub side. Furthermore, since the waste water discharged from the washing place does not usually have a large flow rate, the waste water does not stay and flow back to the washing place.

  When the bathtub drainage and the washing ground drainage are performed simultaneously, as is apparent from the above, the bathtub drainage is drained through the washing ground drainage opening A in the nozzle portion 42, and the washing ground drainage is drained through both side surfaces outside the nozzle portion 42. It flows out to the port 11c and is discharged from the drainage main pipe to the outside of the bathroom unit 1. At this time, since the pressure of the bathtub drainage is sufficiently larger than that of the washing ground drainage, the free end of the movable wall 45 is not pushed back from the washing ground drainage opening A side to the bathtub drainage opening Y side by the washing ground drainage.

  In this way, since the drainage is automatically switched between the bathtub drainage path and the washing ground drainage path by the dynamic pressure of the drainage, the pipe diameter of the drainage main pipe 24 is used in both cases of bathtub drainage and washing ground drainage. The entire cross-sectional area can be effectively used for drainage.

  Such a channel opening / closing mechanism functions even when the bathtub drain opening Y is at a position higher than the top end of the sealed bowl 17 or at a lower position. Therefore, it is not affected by whether the movable wall 45 is constantly immersed in the stored water.

  Next, a modified example of the drain trap according to the present embodiment will be described with reference to FIG. As shown in FIG. 10, the drain trap 10A of the present modification is fundamentally different from that of the present embodiment in that a rising 46 is erected on the four sides of the substrate 44a of the nozzle portion 42. Is substantially the same as that of the present embodiment, and the same reference numerals are given and description thereof is omitted.

  Thus, when the rising 46 is erected, if there is washing ground drainage with the movable wall 45 lying on the bathtub drainage opening Y, a part remains in the area surrounded by the rising 46, The movable wall 45 is placed in an immersed state.

  Since the drain trap 10A communicates with the drain main pipe 24 at the drain port 11c, the downstream of the water reservoir may be filled with a gas such as hydrogen sulfide. In this case, if the movable wall 45 is made of rubber, for example, it may be eroded by this gas, but if it is immersed in the waste water, it is less likely to come into direct contact with the gas and prevent such damage. be able to.

  Without such a rising 46, the lower surface of the movable wall 45 is in a wet state, whereas the upper surface is in a dry state, and a material such as rubber is warped and distorted. However, if immersed in water, both surfaces can be kept in an infiltrated state, so that it is possible to prevent such deterioration.

  In addition, as long as the movable part 45 can be immersed, it is not restricted to the method of forming a standup.

  The embodiments described above are for illustrative purposes and do not limit the scope of the invention. Accordingly, those skilled in the art can employ embodiments in which each or all of these elements are replaced by equivalents thereof, and these embodiments are also included in the scope of the present invention.

  For example, as shown in FIG. 11, the sealed water bowl 17 can be formed in a cylindrical shape with both ends open. In this case, the screw threaded on the inner periphery of the lower part of the sealing bowl 17A and the screw threaded on the outer periphery of the ring-shaped protrusion 11d protruding from the bottom surface of the trap body 11 are screwed together, The sealed water bowl 17A is fixed.

  Alternatively, as shown in FIG. 12, the trap body 11 can be configured to perform the function of the sealed bowl 17. Thereby, the number of members can be reduced, and the configuration of the trap becomes simpler.

  In the present embodiment, the shape of the drain trap has been described by taking a substantially cylindrical shape as an example, but the cross section may be an ellipse. According to this shape, the distance between the bathtub drain water intake and the sealed water bowl can be increased, and the interference of the sealed bowl with the bathtub drain can be more reliably reduced.

The top view which shows the arrangement | positioning relationship of a bathroom unit provided with the drain trap which concerns on this invention. The longitudinal section which shows the composition of the drain trap concerning this embodiment. The cross-sectional perspective view which shows the structure of the drain trap which concerns on this embodiment. The disassembled perspective view of the bathtub drainage part of the drainage trap which concerns on this embodiment. The figure which shows the connection of the bathtub drainage part in a drainage trap. The figure explaining the flow of the waste_water | drain at the time of bathtub drainage. The figure explaining the flow of the drainage of the bathtub drainage part at the time of bathtub drainage. The perspective view explaining the flow of the waste_water | drain at the time of washroom drainage. The longitudinal cross-sectional view explaining the flow of the waste_water | drain at the time of bathtub drainage. The figure which shows the modification which provided the standing-up in the nozzle part of the drainage trap which concerns on this embodiment. The figure which shows the modification which made the both ends of the sealing bowl of the drain trap which concerns on this embodiment the open end. The figure which shows the modification which gave the function of the sealing bowl to the trap main body of the drain trap which concerns on this embodiment. The longitudinal cross-sectional view explaining the conventional drain trap.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathroom unit 2 Waterproof pan 3 Washing place 7 Bathtub 7b Drain hole 10 Drain trap 11 Trap main body 11b Bathtub drain water intake port 11c Drain port 11d Ridge 12 Cover part 12a Female thread part 13 Mounting flange 13a Male thread part 13b Flange part 13c Contact surface part 14 Sealing cylinder 14a Cylindrical part 14b Annular part 14c Columnar protrusion 14d Ridge part 15 Hair catcher 15a Outer ring part 15b Net part 15c Inner ring part 15d Outer ring notch part 15e Rubbing part 16 U packing 17 Sealing bowl 18 Packing 20 Drainage Elbow 21 Flange surface 23 Bath drain pipe 24 Drain main pipe 30 Drain recess 31 Trap cover 40 Bath drain section 41 Bath reservoir section 41a Container body 41b Connection section 41c Packing 42 Nozzle section 44 Frame 44a Substrate 44b Side plate 44c Top plate 44d Dividing hole 45 Movable wall 46 rise A wash Drain openings E seal water bowl upper H water outlet opening Y bathtub drain openings

Claims (6)

In a drain trap having a trap body that collects drainage from the washroom and drainage from the bathtub through separate paths, and a drain outlet connected to a drain main pipe that drains the drained wastewater to the outside,
A wash-basin reservoir comprising an inlet opening at the top for introducing the waste water of the washing area, an open and closed cylindrical sealed water bottle hanging from the inlet, and a sealed water bowl that is externally inserted into the sealed water pipe ,
An intake port provided on the side of the trap body downstream of the wash basin and connected to a bathtub drain pipe for supplying waste water from the bathtub, and the inflow bathtub drainage from the intake port to the drain port A bathtub drainage section that forms a guiding bathtub drainage flow path;
A drainage trap comprising: The bathtub drainage section is energized by the dynamic pressure of the bathtub drainage, places the flow path of the bathtub drainage in an open state, guides the bathtub drainage to the drainage port, and is de-energized when the bathtub drainage ends. 2. A flow path opening / closing mechanism for returning the flow path to a closed state is provided, and a reservoir portion in which drainage stays in the bathtub drain pipe is formed in the closed state, and backflow of the washing ground drainage is prevented. Drain trap as described. 2. The drain trap according to claim 1, wherein the bathtub drainage section includes a diverting hole for diverting the bathtub drainage in the bathtub drainage channel to the outside of the channel on the side surface of the bathtub drainage channel. The drain trap according to claim 3, wherein the diversion hole is provided on the downstream side of the flow path opening / closing mechanism when closed. The drainage trap according to any one of claims 1 to 4, wherein the bathtub drainage part and the sealed water bowl are detachably attached. The drainage trap according to any one of claims 2, 4, and 5, wherein the flow path opening / closing mechanism is immersed in the stored water when closed.

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