JP5515381B2 - Bathroom drain trap - Google Patents

Description

  The present invention relates to a bathroom drain trap provided in a bathroom unit.

  Generally, a drain trap is provided under the floor of the washroom in the bathroom unit. As shown in FIG. 6, in the drain trap 100, sealed water is formed by a reservoir member 110 that can store water and a sealing cylinder 190 that is attached so as to be positioned in the reservoir member 110. Sealing water can prevent odors from the sewage side from entering the bathroom.

  Further, in a bathroom drain trap of a type in which drainage from a bathtub or the like flows into the reservoir 110, a backflow prevention valve member 120 is attached to the bathtub side connection port 111 formed on the side surface of the reservoir 110. There is something to be done. This valve member 120 enables drainage from the bathtub side to flow into the reservoir member 110 so that drainage that flows into the reservoir member 110 from the washing station side does not flow backward from the bathtub side connection port 111 to the bathtub side. Therefore, the valve part 122 which can be opened and closed is provided. This valve member 120 needs to be strongly fixed to the water storage member 110 so that the position thereof is not changed by the flow of water in the water storage member 110.

  As shown in Patent Document 1 and FIG. 6, a conventional valve member 120 is made of an insertion tube portion 121 formed in a tubular shape made of a hard resin, and a stretchable soft resin fixed to the insertion tube portion 121. The valve member 122 is composed of two members, and the valve member 120 is fixed to the water storage member 110 by fitting the insertion tube portion 121 into the bathtub side connection port 111.

JP 2001-152508 A

  However, the method of inserting and fixing the valve member 120 in the bathtub side connection port 111 has a problem that the number of parts increases and the structure becomes complicated.

In order to solve the above-described problem, according to the present invention, drainage from the washing station side and the bathtub side flows in, and the water storage member disposed under the floor on the washing station side and the drainage flowing from the washing station side include A valve member that allows the drainage from the bathtub side to flow into the water reservoir member so that the water does not flow backward to the bathtub side, and the engaging protrusion formed on the valve member includes the water reservoir By engaging with an engagement groove formed in the member, the valve member is fixed to the water storage member so that the tip of the engagement protrusion protrudes into the water storage member. A drainage trap for bathrooms is provided.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to simplify the valve member for backflow prevention attached to the drain trap for bathrooms.

It is sectional drawing which shows the whole drain trap for bathrooms of this invention. It is sectional drawing which shows the attachment state of the water storage member and valve member of this invention. (A) It is a front view which shows the valve member of this invention. (B) It is a perspective view which shows the valve member of this invention. It is a top view which shows the water storage member of this invention. It is a perspective view which shows the attachment state of the water storage member and valve member of this invention. It is sectional drawing which shows the whole conventional drainage trap for bathrooms.

  As shown in FIG. 1, the unit bath according to the present invention includes a drain trap 1 provided in a lower part on the washing side and a bathtub drain part 4 provided in a lower part on the bathtub side. The drain trap 1 and the bathtub drain part 4 are fixed to the lower part of the waterproof pan 9 constituting the floor part on the washing place side and the bathtub side, respectively. Moreover, the bathtub drainage part 4 and the drainage trap 1 are connected via the connecting pipe part 31, and the drainage on the bathtub side and the washing place side merges in the drainage trap 1. The waste water introduced into the drain trap 1 is discharged to the sewage side via the drain pipe 32.

  The drain trap 1 is a state in which the floor pan is sandwiched from above and below by a pool member 10 disposed at the lower part of the floor pan 9 located on the washing area side and a tightening flange 7 disposed at the upper part of the floor pan 9. Tighten and fix with. Further, the sealing cylinder 9 is fastened and fixed to the fastening flange 7 so as to be disposed in the water storage member 10. The lower end of the water seal cylinder 9 is disposed at an upper position spaced from the bottom surface of the water storage member 10. Sealed water is formed in the drain trap 1 by the water storage member 10 and the sealing cylinder 9.

  In addition, a hair catcher 8 is detachably attached to the upper portion of the drain trap so that solid matter such as hair does not enter the water collecting member 10 from the washing area side.

  A bathtub-side connection port 11 to which the connection pipe portion 31 is connected and a drainage pipe-side connection port 12 to which the drainage pipe 32 is connected are formed on the side surface of the water reservoir 10. Although details will be described later, the bathtub-side connection port 11 has a valve member 2 that allows the wastewater flowing in from the washroom side not to flow back to the bathtub side and allowing the wastewater from the bathtub side to flow into the water storage member 10. It is attached. The valve member 2 is attached to a position where the valve member 2 is submerged in the water storage portion in the water storage member 10. The water storage part here refers to a part where water is stored in the water storage member 10.

  The bathtub drainage part 4 is arrange | positioned at the lower part of the floor pan 9 located in the bathtub side, and is clamp | tightened and fixed to the floor pan 9 with the clamp | tightening flange similarly to the drain trap 1 mentioned above. Both drainage from the bathtub 5 and drainage from the floor pan 9 on the bathtub 5 side located in the lower part of the bathtub 5 flow into the bathtub drainage section 4. In addition, a sealing cylinder is attached to the tightening flange on the bathtub drainage section 4 side, and the bathtub drainage section 4 and the sealing cylinder form sealed water on the bathtub side.

  The flow of drainage in the drain trap 1 and the bathtub drain 4 described above will be described below.

  First, the waste water from the washing station side sequentially passes through the hair catcher 8 and the water storage portion in the water storage member 10, and the waste water overflowing from the water storage portion is discharged to the drain pipe 32. At this time, since the valve member 2 attached to the bathtub-side connection port 11 receives water pressure and is closed even when a large amount of wastewater flows instantaneously from the washing area into the reservoir, the bathtub is closed. There is no backflow to the drainage side.

  On the other hand, drainage from the bathtub side (waterproof pan on the bathtub and the bathtub side) overflowed from the reservoir part through the bathtub drainage part 4, the connection pipe part 31, and the reservoir part in the reservoir member 10 in order. Waste water is discharged to the drain pipe 32. At this time, since the valve member 2 attached to the bathtub-side connection port 11 is opened by receiving water pressure, the drainage in the bathtub drainage part 4 can be guided into the reservoir member 10 of the drainage trap 1. .

  Next, the valve member 2 in the present invention will be described in detail.

  As shown in FIG. 3, the valve member 2 includes a valve portion 21 formed in a thin plate shape, and an engagement protrusion 22 formed integrally with the valve portion 21 and formed thick with respect to the valve portion 21. With. The valve portion 21 and the engagement protrusion 22 are integrally formed of a soft resin such as rubber. The valve portion 21 is formed larger than at least the bathtub side connection port 11 in order to open and close the bathtub side connection port 11.

  The engagement protrusion 22 includes an engagement base 23 that protrudes downward from the upper end of the valve portion 21, and a claw 24 that protrudes further downward from the engagement base 23. The engagement protrusion 22 of the valve member 2 is fitted in an engagement groove 15 of the water storage member 10 to be described later, and the claw portion 24 is locked to the lower end of the engagement groove 15, whereby the valve member 2. Is fixed to the water storage member 10.

  Next, the water storage member 10 in the present invention will be described in detail.

  As shown in FIG. 4, the inner surface of the water storage member 10 located at the bathtub side connection port 11 includes a bulging portion 14 that bulges inward with respect to the other inner surface. An engagement groove 15 in which the engagement protrusion 22 of the valve member 10 is fitted is formed on the upper surface of the bulging portion 14. The engagement groove 15 includes an upper engagement groove portion 16 and a lower engagement groove portion 17 continuous below the upper engagement groove portion 16, and the lower end is penetrated to the inner surface of the bathtub side connection port 11. The engagement base portion 23 of the valve member 2 is fitted in the upper engagement groove portion 16, and the claw portion 24 of the valve member 2 is fitted in the lower engagement groove portion 17. As shown in FIG. 2, the claw portion 24 is locked to the inner surface of the bathtub-side connection port 11, so that the valve member 2 is firmly fixed to the water storage member 10.

  Further, since the valve member 10 is a molded product made of a stretchable soft resin such as rubber, and is tightly fitted in the engagement groove 15 of the water storage member 10, the engagement protrusion 22 of the valve member 2. As a result, the engagement groove 15 is closed in a substantially watertight manner. That is, at least a part of the cross section of the engaging protrusion 22 is formed larger than the cross section of the corresponding engaging groove 15. By closing the engaging groove 15 in a watertight manner, it is possible to prevent the waste water flowing into the water storage member 10 from the washing area side from flowing backward from the engaging groove 15 to the bathtub side. Moreover, since the valve member 2 is firmly attached to the water storage member 10, even when a large amount of drainage flows into the water storage member 10 from the washing station side and the bathtub side, the valve member 2 is detached by the water flow. There is no fear.

  Further, as shown in FIG. 2, the valve member 2 is attached so that the front end of the engaging protrusion 22 protrudes into the bathtub side connection port 11. This makes it possible to easily remove the firmly attached valve member 2 by putting a hand into the bathtub drain port 11 and pushing up the front end of the engaging protrusion 22 upward. By removing the valve member 2 easily, the valve member 2 can be easily maintained and the drain trap 1 can be easily cleaned.

  Moreover, since the engagement protrusion 22 is formed thicker than at least the valve portion 21, the hardness is high. Therefore, the valve member 2 that is firmly attached can be removed more easily by pushing the tip of the engagement protrusion 22 upward. At the same time, when the valve member 2 is attached, since the force is easily applied to the claw portion 24 by increasing the hardness, there is also an advantage that the engagement protrusion 22 can be easily locked in the engagement groove 15.

  Although the engagement groove 15 can be post-processed after the water storage member 10 is molded, there is a problem that productivity is poor. Therefore, in the present invention, as shown in FIG. 4, the engaging groove 15 is formed on the upper surface of the bulging portion 14, and the entire engaging groove 15 is located above the bulging portion 14. 10, the engagement groove 15 is also formed at the same time by the upper mold for forming the inner surface of the water storage member 10. According to this manufacturing method, there is an effect that the productivity is excellent as compared with the case of post-processing.

  As described above, according to the present invention, the configuration can be simplified as compared with the prior art in that the engagement protrusion of the valve member 2 is fixed by engaging with the engagement groove of the water storage member 10. There is an effect.

  Moreover, since the front-end | tip of the engaging protrusion 22 is attached so that it may protrude from the inner surface of the water storage member 10. FIG. There is an effect that the valve member 2 can be easily removed by a simple operation of pushing up the tip of the engaging protrusion 22 by hand from within the water storage member 10.

  Moreover, since the whole valve member 2 can be formed from a soft resin material that can be expanded and contracted, the number of parts can be reduced, and the cost can be reduced.

  Moreover, since the engaging groove 15 is watertightly attached by the engaging protrusion 22, there is an effect that the backflow of the drainage from the engaging groove 15 to the bathtub side can be prevented.

  Moreover, since the engagement protrusion 22 is formed thicker than the valve portion 21 so as to have a higher hardness, the effect of facilitating the attachment / detachment work is achieved.

  Moreover, since the engagement protrusion 22 is locked by the claw portion 24, the valve member 2 is more difficult to be detached and can be firmly fixed.

  Moreover, since the engagement groove | channel 15 is formed in the upper surface of the bulging part 14 of the bathtub side connection port 11, the engagement groove | channel 15 is simultaneously formed with the upper side metal mold | die for forming the inner surface of the water storage member 10. FIG. This makes it possible to improve productivity.

DESCRIPTION OF SYMBOLS 1 ... Drain trap, 10 ... Reservoir member, 11 ... Bath side connection port, 12 ... Drain pipe side connection port, 14 ... Expansion part, 15 ... Engagement groove, 16 ... Upper engagement groove, 17 ... Lower side engagement Joint groove, 2 ... Valve member, 21 ... Valve part, 22 ... Engagement protrusion, 23 ... Engagement base, 24 ... Claw part, 31 ... Bath water pipe, 32 ... Drain pipe, 4 ... Bath drain part, 5 ... Bathtub, 51 ... Drain plug, 6 ... Bathtub apron, 7 ... Fastening flange, 8 ... Hair catcher, 9 ... Waterproof pan

Claims (7)

Drainage water from the washing place side and the bathtub side flows in, and a water storage member disposed under the floor on the washing place side,
A drainage member that flows in from the washing area side so as not to flow backward to the bathtub side, and a valve member that allows the drainage from the bathtub side to flow into the water storage member,
By engaging an engagement protrusion formed on the valve member with an engagement groove formed on the water storage member, the valve member is engaged with the water storage member at the tip of the engagement protrusion. A bathroom drain trap, wherein the water trap is fixed so as to protrude into the water storage member. The bathroom drain trap according to claim 1 , wherein the valve member is formed of a soft resin material that can be expanded and contracted as a whole. The bathroom drain trap according to claim 2 , wherein the engaging protrusion is fixed in a watertight manner to the engaging groove. It said valve member comprises an openable and closable valve unit, according to claim 2 or 3 toward the engagement projection is characterized in that it is formed so as hardness is greater than at least the valve section Bathroom drain trap. The bathroom drain trap according to any one of claims 1 to 4 , wherein the engagement protrusion includes a claw portion. The said engaging groove is formed in the up-down direction, and is formed in an inward side rather than the inner surface of the said water retention member located above the said engaging groove. The bathroom drain trap according to any one of 5 . A bathtub-side connection port to which a drain pipe from the bathtub side is connected is formed on the side surface of the reservoir member, and the inner surface of the reservoir member where the bathtub-side connection port is located bulges inward. And the engagement groove is formed on the upper surface of the bulge, and the end of the engagement protrusion is fixed so as to protrude into the bathtub side connection port. The bathroom drainage trap according to any one of claims 1 to 6 , wherein the bathroom drainage trap is provided.

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