JP2006299720A - Drain structure of bathtub - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage structure in which a floor pan and a bottom part of a bathtub are closely arranged. <P>SOLUTION: A drainage trap 2 for the bathtub provided with an opening edge 3c at an upper end is connected with the floor pan 1 and a drain cylinder 6 communicating with an opening 3a at the upper end of the drainage trap 2 and provided with a screw part 6b at a lower end is mounted in a drainage port 4b provided in a bottom part 4a of the bathtub 4 to be set on the floor pan 1. The drain cylinder 6 is connected with the drainage trap 2 through a connecting member 7 having a screw cylinder part 7a threaded to the screw part 6b at the lower end of the drain cylinder 6 and an outward flange part 7b formed continuously with a lower end of the screw cylinder part 7a and engaging with the opening edge 3c of the drainage trap 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement of a drainage structure communicating with an opening of a drain trap through a drain outlet of a bathtub installed in a floor pan.

  A conventional floor pan type bathtub is fixed to a floor pan by a drain tube provided at the drain port of the bathtub installed on the floor pan sandwiching the peripheral edge of the drain port of the bathtub with a drain tube nut. It has a drainage structure that is tightly coupled to the upper end opening of the connected drain trap via a connection packing.

The following patent document describes a drainage structure in which a bathtub drainage port and a drainage trap are communicated via a drainage cylinder nut and a connection packing.
JP 2002-322703 A

  By the way, considering the ease of straddling from the washroom to the bathtub and the depth of the bathtub, it is ideal that the bottom of the bathtub is lower than the floor pan, that is, the floor pan and the bottom of the bathtub are close It is.

  However, in the above conventional drainage structure, a drain tube nut is required to fix the drain tube, so that there is at least a space of the height of the drain tube nut between the bathtub drain port and the drain trap, and A thickness space for the connection packing is required. That is, the length of the drain tube, and therefore the distance between the floor pan and the bottom of the bathtub, is limited by the dimensions of the drain tube nut and the connection packing, so the bathtub should be installed in an ideal proximity to the floor pan. I can't.

  The present invention has been proposed in view of such circumstances, and an object thereof is to provide a bathtub drainage structure in which a floor pan and a bathtub bottom are brought close to each other.

  In order to achieve the above-mentioned object, the drainage structure for a bathtub according to claim 1 is configured such that a drainage trap for a bathtub having an opening edge at the upper end is connected to the floor pan, and the bathtub installed on the floor pan is A drain tube provided in the bottom portion is connected to the upper end opening of the drain trap, and a drain tube provided with a screw portion at the lower end portion is attached, and a screw tube portion screwed into the lower end screw portion of the drain tube, The drain cylinder and the drain trap are connected by a coupling member that is coupled to the lower end of the screw cylinder and includes an outward flange that engages with the opening edge of the drain trap.

  According to a second aspect of the present invention, a water stop packing is interposed between the opening edge portion and the outward flange portion.

  According to a third aspect of the present invention, the threaded portion of the drain tube is a female screw, and the threaded tube portion of the coupling member is a male screw.

  The drainage structure according to claim 1 uses a coupling member to connect the drainage cylinder and the drainage trap, and the drainage trap is engaged with an opening edge portion of the coupling member and an outward flange of the coupling member. Is a structure in which the lower end screw portion and the screw cylinder portion of the coupling member are screwed together.

  That is, since the screw cylinder portion of the coupling member is configured to be screwed and overlapped with the drain tube in a state of protruding from the opening of the drain trap, the length of the cylinder portion of the drain tube only forms the screw portion. If the length of a drain pipe is shortened, the space | interval of the floor pan of a coupling member and a bathtub bottom part can be closely approached. As a result, an ideal bathtub depth and ease of straddling can be ensured.

  According to the second aspect, since the water stop packing is interposed between the opening edge portion of the drain trap and the outward flange portion, it is possible to prevent water leakage due to the connection of the coupling member.

  According to the third aspect, since the threaded portion of the drainage cylinder is an internal thread and the threaded cylinder portion of the coupling member is an external thread, if the opening edge of the drainage trap is configured by another member such as a trap lid, the threaded engagement The drain tube and the coupling member are coupled to each other, and an opening piece of the trap lid is sandwiched between the lower end of the drain tube and the outward flange of the coupling member, so that the drain tube, the coupling member, and the trap lid are integrated. It becomes. Thereby, the bathtub installation work to the drain trap becomes easy.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a longitudinal sectional view of an essential part showing one embodiment of a bathtub drainage structure of the present invention. FIG. 2 is a perspective view of a coupling member that connects the drain tube of the bathtub and the drain trap.

  The bathtub 4 is arranged on a mounting table (not shown) on the floor pan 1. A drain tube 6 having a flange piece 6a at the upper end and a threaded portion (female screw portion) 6b at the lower end is attached to the drain port 4b opened to the bottom 4a of the bathtub 4. In addition, a packing member 8 is interposed between the flange piece 6 a of the drain tube 6 and the drain port peripheral portion 4 c of the bathtub 4. And this drain pipe 6 leads to the upper end opening part 2b of the drain trap 2 arrange | positioned below. In addition, 11 is a drain plug that is opened and closed by a user's manual operation, and 11a indicates a chain for opening.

  On the other hand, the drain trap 2 is formed on the floor pan opening piece 1a of the floor pan 1 by the flange piece 2a formed on the upper edge thereof and the outward flange piece 5a of the clamping member 5 screwed and fixed to the drain trap 2. Connected. A water-stop packing 9 is attached to the mouth edge of the opening piece 1 a of the floor pan 1.

  The structure in the vicinity of the upper end opening 2b of the drain trap 2 is installed above the upper end opening 2b in a state in which the trap lid 3 opened up and down is fitted to the holding member 5, and the lower opening of the trap lid 3 3b has a structure that communicates with the opening 5b of the clamping member 5 and further communicates with the drain trap 2 below.

  That is, the waste water flowing out from the drain port 4 b of the bathtub 4 flows to the drain trap 2 through the upper opening 3 a and the lower opening 3 b of the trap lid 3 and the opening 5 b of the holding member 5.

  In addition, A has shown the liquid level of the sealing water for odor prevention, and the position of this liquid level A is provided by the trap main-body apparatus (not shown) provided under the drain (not shown) by the side of a washing place (not shown). Is always kept.

  In the present invention, in order to connect the drain port 4b of the bathtub 4 to the opening 2b of the drain trap 2 and to connect the bathtub 4 and the drain trap 2, the screw cylinder part (male thread part) 7a and the screw cylinder A coupling member 7 for screwing connection with the drain tube 6 is used, which includes an outward flange 7b coupled to the lower end of the portion 7a.

  That is, as shown in FIG. 1, the coupling member 7 projects the screw cylinder portion 7 a above the opening 3 a of the trap lid 3 with the outward flange 7 b engaged with the opening piece 3 c of the trap lid 3. The screw cylinder portion 7a and the lower end screw portion 6b of the drainage cylinder 6 are screwed together.

  That is, the screw cylinder portion 7a of the coupling member 7 and the screw portion 6b of the drainage cylinder 6 are screwed together, and the screw portions are overlapped with each other, so that the interval between the bathtub 4 and the floor pan 1 is the screw cylinder portion of the coupling member 7. Regardless of the length of 7a, it is limited only by the length of the drain tube 6.

  Therefore, when the screw portion 6b of the drain tube 6 and the screw tube portion 6b of the coupling member 7 are screwed with the bathtub 4 placed on the mounting table on the floor pan 1, the flange piece of the drain tube 6 6a is pressed against and fixed to the peripheral edge portion 4c of the drain port 4b of the bathtub 4 through the packing 8, and at the same time, the inwardly hooked opening piece 3c of the trap lid 3 and the outward flange portion 7b of the coupling member 7 are pressed against each other. Engage.

  In other words, if the drain tube 6 having a shorter tube length is used after ensuring the vertical length of the lower end screw portion 6b, the interval between the bathtub 4 and the floor pan 1 can be reduced. As a result, the bathtub 4 can be made to an ideal depth and can be easily straddled.

  Further, the water-stopping packing 10 is interposed between the opening piece 3c of the trap lid 3 and the outward flange portion 7b of the coupling member 7, whereby water leakage from the trap lid 3 can be prevented.

  Next, an example of the attachment procedure will be described.

  First, the clamping member 5 is inserted into a predetermined position of the opening 2 b of the drain trap 2, and the clamping member 5 and the drain trap 2 are screwed together to be completely fixed to the floor pan 1.

  On the other hand, before the bathtub 4 is placed at a predetermined position on the floor pan 1, the drain tube 6 inserted into the drain port 4b, the coupling member 7 screwed to the lower end screw portion 6b, and the screw The trap lid 3 connected simultaneously by the joint connection is kept in an integrated state.

  In other words, the drain tube 6 is inserted into the drain port 4 b, the waterproof gasket 10 is mounted between the outward flange 7 b of the coupling member 7 and the opening piece 3 c, and the screw cylinder portion 7 a of the coupling member 7 is attached to the trap lid 3. The bottom end of the bathtub 4 is protruded from the drain port 4b to the back of the bathtub, and the screw cylinder portion 7a is protruded from the opening 3a of the trap lid 3 in the state of protruding from the opening 3a. And screwed together.

  By this screwing, the drain tube 6 and the coupling member 7 are coupled, and the opening piece 3c of the trap lid 3 is sandwiched between the lower end of the drain tube 6 and the outward flange portion 7b of the coupling member 7, and the drainage The cylinder 6, the coupling member 7, and the trap lid 3 are integrated. Further, at this time, the outward flange portion 7b and the opening piece 3c are engaged with each other in a state where the water blocking packing 10 is compressed. At this time, the flange piece 6a of the drain tube 6 is not yet in a state of being crimped to the peripheral edge portion 4c of the drain port 4b.

  Thereafter, the bathtub 4 is placed at a predetermined position on the floor pan 1, and the water blocking packing 8 is interposed between the flange piece 6 a of the drain pipe 6 and the peripheral edge portion 4 c of the drain pipe. When pushed down from within 4, the trap lid 3 is pushed downward and fitted into a predetermined position of the clamping member 5. An annular ridge 5c is formed on the inner periphery of the clamping member 5, while a circumferential groove 3d is formed on the outer periphery of the trap lid 3, and the fitting at the predetermined position is carried out between the ridge 5c and the circumference. This is achieved by fitting the groove 3d. And when it fits, the flange piece 6a of the drain pipe 6 and the peripheral part 4c of the drain port 4b mutually press-contact, and both are mutually fixed.

  The coupling member 7 may be fixed to the trap lid 3 in advance. Further, the coupling member 7 may be formed integrally with the trap lid 3. In order to do so, you may use the trap lid | cover 3 which made the screw cylinder part protrude from the opening piece 3c.

  In this way, if the coupling member 7 is fixed to the drain trap 2 side in advance or integrated, the screw cylinder portion is also fixed when the drain trap 2 itself is fixed. Therefore, the screw connection operation between the drain trap 2 and the drain tube 6 can be performed more easily. In such a case, contrary to the present embodiment, the drain tube 6 side may be a male screw and the screw tube portion 7a may be a female screw.

The principal part longitudinal cross-sectional view which shows an example of the bathtub drainage structure of this invention Perspective view of coupling member

Explanation of symbols

1 floor pan 2 drain trap 2b opening 3 trap lid 3a upper opening 3b lower opening 3c opening piece (opening edge)
4 Bathtub 4a Bathtub bottom portion 4b Drainage port 4c Drainage port peripheral portion 5 Holding member 5a Outward flange piece 6 Drain tube 6a Flange piece 6b Lower end screw portion 7 Connecting member 7a Screw tube portion 7b Outward flange portion

Claims (3)

Connected to the floor pan with a drain trap for a bathtub having an opening edge at the upper end, communicated with the drain opening provided at the bottom of the bathtub installed on the floor pan to the upper end opening of the drain trap, Attach a drain tube with a threaded part,
By a coupling member provided with a screw cylinder part screwed to the lower end thread part of the drain cylinder, and an outward flange part engaged with the opening edge part of the drain trap formed at the lower end of the screw cylinder part, A drainage structure for a bathtub, wherein the drain tube and the drain trap are connected. In claim 1,
A drainage structure for a bathtub, wherein a water-stopping packing is interposed between the opening edge and the outward flange. In claim 1 or 2,
The drainage structure for a bathtub, wherein the threaded portion of the drain tube is a female screw, and the threaded tube portion of the coupling member is a male screw.

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