JPH0514283U - Sealing material and drainage pipe connection device for toilet bowl - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the workability of the connection between the toilet bowl and the drainage pipe, and at the same time prevent the deterioration of the sealing performance due to the secular change of the sealing material and the deformation of the toilet installation floor. [Structure] A rubber-like elastic material having a water-swelling material formed by mixing a rubber material and a hydrophilic urethane or a water-absorbing resin at least on a side in contact with water between a drainage port of a toilet bowl and a drainage pipe connected thereto. A ring-shaped sealing material made of metal is crushed and interposed. Further, the upper surface of the annular sealing material is formed in a mountain shape having a ridge line in the circumferential direction, and a concave portion having a substantially V-shaped cross section is formed in the circumferential direction on the inner circumferential surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sealing material used for a connecting portion of a water supply / drainage pipe, and a connecting device for connecting a drainage port of a toilet bowl to a drainage pipe.

[0002]

[Prior Art]

 Conventionally, there are various kinds of sealing materials such as rubber packing used for the connection part of the water supply / drainage pipe. For example, at the connection part between the drainage port of the toilet bowl and the drainage pipe, synthetic resin foam such as foamed polyethylene is used as the sealing material. An annular gasket is used in which the entire surface of the core material of the body is covered with a synthetic resin material mainly composed of atactic polypropylene, and the annular gasket is connected to the drain port of the toilet and the drain pipe connected to it. There is also known a drainage pipe connecting device for a toilet, in which a crushing interposition is used to seal between the two. (See Japanese Utility Model Publication No. 56-9750)

[0003]

[Problems to be solved by the device]

 However, since the above annular gasket is soft and has poor restoring ability, in the drainage pipe connecting device using this, the gasket is deformed by temporary placement of the toilet at the time of construction and the It is difficult to use the gasket.

Further, even if the gasket is replaced after temporary placement, the synthetic resin material forming the surface portion of the gasket is oily and soft and has too strong adhesion, so that the replacement is not only complicated but also easily soiled.

These problems become noticeable at high temperatures such as summer when the stickiness of the synthetic resin material becomes large, but on the other hand, the synthetic resin material becomes hard at low temperatures such as winter, so that the seat frame of the toilet bowl and the flange of the drain pipe are Even if the gasket is tightened with bolts and nuts, the gasket will not be sufficiently crushed and deformed, and the toilet bowl will float above the floor surface, and it will be necessary to repair it by filling the area around the toilet bowl with white cement, silicone, etc. ing.

[0006] Furthermore, after a long period of time, the waterproof effect is reduced due to volatilization and solidification of the gasket, and under imperfect fixing to the floor surface of a wooden house or the like, the flexure of the floor surface may cause a gap between the gasket and the toilet bowl or drain pipe. There is a gap between the two, causing problems such as water leakage and odor leakage.

[0007] Further, due to the misalignment at the time of setting the toilet bowl, the gasket sometimes leaks out to the drainage port and causes the clogging of the toilet bowl.

The present invention has been made in view of the above-mentioned construction and sealing problems of the conventional sealing material and the drainage pipe connecting device of the toilet using the same, and the purpose thereof is the workability. Another object of the present invention is to provide a sealing material having excellent sealing property, and a drain pipe connecting device for a toilet bowl.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, in the sealing material of the present invention, at least the side in contact with water is formed of a water-swelling material mixed with a rubber material and a hydrophilic urethane or a water-absorbing resin.

In addition, in the drainage pipe connecting device of the toilet bowl, between the drainage port portion of the toilet bowl and the drainage pipe connected to this, there is a mountain-shaped upper surface having a ridgeline in the circumferential direction and a V-shaped cross section. A rubber-like elastic material, which has an inner peripheral surface with a circular recess formed in the circumferential direction, and at least the side in contact with water is made of a water-swelling material mixed with a rubber material and hydrophilic urethane or water-absorbing resin. The material is crushed and interposed.

[0011]

[Action]

 In the seal material configured as described above, when the water absorbing and swelling material comes into contact with water, the water absorbing and swelling material expands and the surface pressure of the seal portion increases, and in addition to the rubber-like elasticity, The surface pressure of the seal portion increases due to expansion. As a result, the sealing ability of the sealing material is improved each time water contacts the sealing material.

Further, in the drainage pipe connecting device for a toilet bowl, there is no deformation of the sealing material due to temporary placement of the toilet bowl, and no sticking to the toilet bowl, floor, etc. In addition, the sealing material is in line contact with the toilet side by the ridge line on the upper surface and is crushed into a buckling shape by the V-shaped groove on the inner peripheral surface while securing the seal of the part, and is tightly attached to the drain port and drain pipe of the toilet. Wearing, it exerts a dual sealing function of the sealing force due to the initial rubber elasticity and the sealing force due to water swelling.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. The drawing shows the drainage pipe connection device in a floor drainage type toilet bowl. The drainage pipe B is made of a lead pipe or a PVC pipe and is provided with a flange 4 at one end. The drainage pipe B is connected to the building frame and the flange 4 is attached to the toilet bowl. The installation portion is projected onto the floor surface D, and the back surface thereof is brought into contact with the floor surface D and fixed to the floor surface with screw nails or the like not shown.

Further, in the case of the present embodiment, a short pipe 5 having a flange 4 which is formed separately from the drain pipe B is fitted and fixed to the drain pipe B by fitting.

The flange 4 is provided with a recessed groove-shaped seal material seat 6 along the inner peripheral edge of the flange 4, and a bolt attachment hole 7 is located outside the seal material seat 6. There are two symmetric locations.

The bolt attachment hole 7 is opened with a certain length in the circumferential direction of the flange 4, and one half thereof has a width sufficient to allow the head 9 of the bolt 8 to pass therethrough. The width of the other half is so narrow that the head 9 cannot be pulled out. A recess 10 for accommodating the bolt head 9 is provided on the bottom surface of the flange 4 in the bolt attachment hole 7.

Then, the sealing material C is fitted and mounted on the sealing material seat 6 of the flange 4 in the drainage pipe B, and the tightening bolt 8 is erected through the bolt mounting hole 7. The toilet bowl A is connected via the seal material C and the bolt 8.

The toilet bowl A has a seat frame 11 integrally formed at the bottom, and a drainage port 1 is opened in a projecting shape at the center thereof. The drainage port 1 is fitted to the drainage pipe B so as to fit on the floor. Placed on surface D.

A through hole 12 is bored in the seat frame 11, and the bolt 8 attached to the flange 4 of the drainage pipe B is inserted into the through hole 12 and a nut 13 is screwed and tightened therein. As a result, the seat frame 11 and the flange 4 press the sealing material C so that the toilet bowl A is connected to the drain pipe B.

A recess 14 is formed on the bottom surface of the seat frame 11 to accommodate the flange 4 of the drainage pipe B.

On the other hand, the sealing material C is composed of a water absorbing and swelling material 15 in which a rubber material and a hydrophilic urethane or a water absorbing resin are mixed, and the water absorbing and swelling material 15 is adjusted to a mixture ratio shown in FIG. It is configured to exhibit the swelling rate characteristics as shown.

As the above water-absorbent resin, polyacrylic acid salt-based, acetic acid biacrylic acid ester copolymer saponified product, isobutylene, maleic acid copolymer cross-linked product, polyethylene oxide-based resin are used, and base rubber NR, NBR, IR, IIR, BR, EPDM, SBR, CSM, CR and ACM are used as

The mixing ratio is as follows. Rubber material (base material) ... 100 parts by weight of hydrophilic urethane or water-absorbing resin ... 5-300% by weight

The sealing material C is formed in an annular shape, and the upper surface portion thereof is formed in a mountain shape in which the inside and the outside are inclined downward with a portion near the inner periphery as a boundary. .. Therefore, the ridge line 2 is formed on the upper surface of the sealing material C along the portion near the inner circumference thereof.

Further, the sealing material C has a concave portion 3 having a substantially V-shaped cross section which is connected to the lower end of the inner inclined surface of the above-mentioned mountain-shaped upper surface portion and is formed over the entire circumference in the circumferential direction of the inner peripheral surface.

Of the inner and outer inclined surfaces of the upper surface of the sealing material C forming the chevron shape, the inner inclined surface ends at a portion slightly lower than the upper end of the sealing material C, and the recess 3 extends from the lower end of the inner inclined surface. The sealing material C is formed slightly below the center in the vertical direction, and the depth is gradually increased from both upper and lower ends thereof toward the deepest portion provided in the center in the vertical direction of the sealing material.

The outer inclined surface of the upper surface of the sealing material C is formed so that the lower end thereof reaches a portion slightly above the vertical center of the sealing material C.

The shape of the above-mentioned sealing material may not be the above-mentioned shape as long as it is a shape that can be easily crushed up and down. For example, as shown in FIGS. It is also optional to form a C-shape or an octagon with one side cut out.

Then, the sealing material C makes line contact with the lower surface of the seat frame 11 of the toilet bowl A by the ridge line 2 of the upper surface portion, and is crushed into a buckling shape in the concave portion 3 by tightening the nut 13, and the drainage port of the toilet bowl A. 1 and the flange 4 of the drainage pipe B are tightly adhered to each other and the portion is sealed.

As shown in FIGS. 6 (A) to 6 (C), the sealing material is such that a general rubber material 16 is fixed on the outer peripheral side of the water absorbing / swelling material 15, or a part of the rubber material 16 is swollen by absorbing water. It is also possible to form the material 15 by embedding the material 15 or by performing two-layer molding.

If the sealing material C as described above is installed between the flange 4 and the seat frame 11 as a sealing material, there will be a gap between the pipe 5 and the toilet A due to the distortion of the floor or the toilet after the construction. Even if the opening occurs, the sealing material C absorbs water and exhibits the swelling rate characteristic as shown in FIG. 7, so that the sealing effect can be continued following the opening of the sealing portion.

Further, even if the precision after construction is poor and a gap of about ± 10 mm is generated in the seal portion, the seal material C exhibits the swelling rate characteristic of FIG. You can The above-mentioned sealing material C may be provided not only at the connecting portion between the toilet bowl A and the drainage pipe B but also at the connecting portions such as general water supply pipes, drainage pipes and manholes.

[0033]

【effect】

 Since the present invention is configured as described above, it has the following effects. (1) Since the sealing material of the present invention is made of a water absorbing and swelling material in which at least the side in contact with water is mixed with hydrophilic urethane or water absorbing resin, in addition to the sealing force as rubber-like elasticity, When water enters and contacts the water-swelling material, the water-swelling material expands to increase the surface pressure of the seal portion of the sealing material and improve the sealing force. As a result, the effect of increasing the sealing ability of the sealing material each time water comes in contact with the sealing material can be expected. Further, since the sealing material of the present invention exhibits sealing ability by the water-swelling material, the size of the entire sealing material can be reduced, and the member to which the sealing material is attached can be downsized. ..

(2) In the drainage pipe connecting device of the present invention, a rubber member having a base at least on the side that comes into contact with water is a sealing material that is crushed between the drainage port of the toilet and the drainage pipe connected to the drainage port. Since the sealing material is made of a rubber-like elastic material formed of a water-swelling material mixed with hydrophilic urethane or a water-absorbing resin, the sealing material does not volatilize or solidify over the period of use. Since it has a double sealing function of the sealing force due to elasticity and the sealing force due to water swelling of the water-swelling material, the water-proof effect does not decrease even with long-term use, and a gap is created in the seal part due to the bending of the floor surface. There is little fear. Moreover, since the sealing material is formed in an annular shape with a mountain-shaped upper surface having a ridgeline in the circumferential direction, the ridgeline comes into line contact with the seat frame of the toilet bowl, which makes it difficult to obtain a horizontal and smooth surface made of pottery. It can be firmly attached and the sealing property can be further improved. In addition, since the sealing material has a large swelling rate as described above, it has an appropriate hardness and resilience, and is not deformed and temporarily unusable when the toilet bowl is temporarily placed during construction. Therefore, there is no need to replace the sealing material after temporary placement, and there is no risk of the operator's hands, clothes, floor, etc. becoming dirty due to stickiness. Further, since the sealing material is formed in an annular shape having an inner peripheral surface in which a concave portion having a substantially V-shaped cross section is formed in the circumferential direction, it is buckled in the concave portion by tightening the bolt nut connecting the toilet bowl and the drain pipe. Crushed easily and does not cause the toilet bowl to rise above the floor, so there is no risk of over-tightening the bolts and nuts or damaging the toilet bowl or drain to prevent this. ..

[Brief description of drawings]

FIG. 1 is a sectional view of a drainage pipe connecting device of a toilet according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged cross-sectional view of a main part.

FIG. 4 is a perspective view of a sealing material.

5A, 5B, and 5C are enlarged cross-sectional views showing other examples of the shape of the sealing material.

6 (A), (B) and (C) are enlarged cross-sectional views showing another embodiment of the structure of the sealing material.

FIG. 7 is a characteristic diagram showing a swelling rate characteristic of a sealing material.

[Explanation of symbols]

 A Toilet bowl B Drain pipe C Seal material 1 Drain port 2 Ridge line 3 Recessed portion 15 Water absorption swelling material 16 Rubber material

Front page continuation (72) Hisashi Nagano 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Satoru Furuta 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu, Fukuoka No. 1 Totoki Co., Ltd. (72) Inventor Takahiro Shigenobu 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture No. 1 Totoki Co., Ltd. (72) Nobufumi Yokomitsu Otsurahara, Nakahara-cho, Sanyogi-gun, Saga Prefecture 609 NOK Co., Ltd. (72) Inventor Hiromi Nomura Nakamura-cho, Sanyo-gun, Saga Oohara, 609 NOK Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A seal material used for a connection portion of a water supply / drainage pipe, which is made of a rubber-like elastic material, at least a side of which is in contact with water is formed of a water-swelling material obtained by mixing a rubber material and a hydrophilic urethane or a water-absorbing resin. Sealing material. 2. A mountain-shaped upper surface which is annularly formed and has a ridgeline in the circumferential direction, and a concave portion having a substantially V-shaped cross section are circumferentially provided between the drainage port portion of the toilet bowl and the drainage pipe connected thereto. A seal material made of a rubber-like elastic material having a formed inner peripheral surface and at least a side in contact with water made of a water-swelling material mixed with a rubber material and a hydrophilic urethane or a water-absorbing resin is crushed and interposed. Toilet drain pipe connection device.