JP2002088850A - Drainage system for sink - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively stick a drainage body and a male screw cylinder part to each other and to prevent water leakage from a part between a peripheral collar part of the male screw cylinder part and a peripheral collar part of the drainage body. SOLUTION: The peripheral collar part 5b is integrally formed at the open edge part of the male screw cylinder body 5, and the peripheral collar part 4a of the drainage body 4 is folded in approximately U-shape comprising three faces of an inner upper face Q1, an inner side face Q2 and an inner lower face Q3, to form a bent part 4b. The bent part comprising three faces of the inner upper face, inner side face and inner lower face of the peripheral collar part of the drainage body are pressure-fitted to tightly embrace three faces of an upper face D1, a side face D2 and a back face D3 of the peripheral collar part of the male screw cylinder body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sink drainage device used in, for example, household and commercial kitchen facilities.

[0002]

2. Description of the Related Art Conventionally, as a drainage device for a sink of this type,
As shown in FIG. 8, a sink S of a sink M made of stainless steel.
The form of the mounting hole K in the bottom open穿形, inserted through the mounting hole K in the opening edge portion in the peripheral flange portion made of a synthetic resin opening container-like drainage container body H made of polyethylene or the like having a H _1, the waste water A cover member Q made of stainless steel covering the upper inner surface of the container body H and the upper surface of the peripheral flange portion is attached, and a chrysanthemum rubber body R and a water blocking plate made of synthetic resin are arranged on the periphery of the opening of the drainage container body H. A stainless steel or synthetic resin basket E is removably housed in the drainage container H, and a drainage port F is provided in the drainage container H. An external thread G is integrated with the outer peripheral surface of the drainage container H. And a ring-shaped packing P between the drainage container H and the sink S.
Interposed, and then screwing the female screw portion N ₁ of the fixing nut N of the synthetic resin to the male screw portion G, is known as the back made in pressure contact with the structure of the surface of the sink S for fixing nut N I have.

[0003]

However, the drainage container is made of a synthetic resin, and the inner surface of the drainage container as a surface that contacts the drainage is a synthetic resin surface, and the synthetic resin is inherently easily charged with static electricity. , Fine dust and organic substance dirt particles easily adhere to the synthetic resin surface as the inner surface of the drainage container body, and the adhesion of this dirt substance causes germs to propagate,
In addition to being a cause of slimming and offensive odor, dirt substances are easily adhered to the synthetic resin surface and may be difficult to remove and clean.In addition, synthetic resin has high recycling cost and is inconvenient in terms of economy. Also have.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to solve these problems. Among the present invention, the invention according to claim 1 is provided with a mounting hole at the bottom of a sink of a sink. An opening container-shaped drainage container body having a peripheral flange portion at an opening edge in the mounting hole, a cage body removably provided in the drainage container body, and a drainage port portion provided in the drainage container body; A male screw portion is provided on the outer peripheral surface of the container body, and a female screw portion of a fixing nut made of synthetic resin is screwed to the male screw portion. The drainage container body has a stainless steel having a peripheral flange portion at an opening edge. , A drain body made of copper or a copper alloy, and a male screw cylinder made of synthetic resin fixed to the drain body and having the male screw portion, and a peripheral flange portion is provided at an opening edge of the male screw cylinder. The drainage body is formed integrally and the peripheral flange of the drainage body is made up of three surfaces: It is bent into a substantially U-shaped folded shape to form a bent portion. A sink drainage device characterized in that a bent portion consisting of three lower surfaces is pressed and crimped.

Further, according to the invention, an annular packing is interposed between the peripheral flange portion of the male screw cylinder and the sink of the sink, and the male screw cylinder is provided on the front and back surfaces of the packing. It is characterized in that an annular convex portion capable of being pressed against is provided on the back surface of the peripheral flange portion of the body and the surface of the sink of the sink,
Further, the invention according to claim 3 is characterized in that an annular convex portion capable of being pressed against the surface of the packing is provided on the back surface of the peripheral flange portion of the male screw cylinder, and the invention is also characterized in that The invention according to claim 4 is characterized in that an annular packing is interposed between the sink of the sink and the fixing nut, and an annular convex which can be pressed against the front surface and the back surface of the packing against the back surface of the sink of the sink and the surface of the fixing nut. In the invention according to claim 5, the male screw cylindrical body is formed of a material similar to a linear expansion coefficient of a material of the drain main body. It is characterized by becoming.

[0006]

1 to 7 show an embodiment of the present invention. FIGS. 1 to 6 show a first embodiment of the present invention, and FIG. 7 shows a second embodiment.

In the first embodiment shown in FIGS. 1 to 6, reference numeral 1 denotes a drainage container, which is formed in an open container shape having a peripheral flange 1b at an opening edge, and is provided at the bottom of the drainage container 1. A drain hole 2 is provided, and a mounting hole K at the bottom of the sink S of the sink M is provided.
Attached to.

Reference numeral 3 denotes a cage, which is formed in an open container shape having a plurality of water passage holes 3a on a peripheral surface made of stainless steel.
A gripping rod 3b made of stainless steel, copper, or a copper alloy is attached to the periphery of the basket body 3 so as to be able to move up and down, and is housed in the drainage container body 1 in a detachable manner.

In this case, the drainage container 1 has a drainage body 4 made of stainless steel, copper or a copper alloy having a peripheral flange 4a at an opening edge, and a male screw 5a fixed to the drainage body 4. For example, it is formed by a male screw cylinder 5 made of a synthetic resin such as polypropylene. A peripheral flange 5b is integrally formed on an opening edge of the male screw cylinder 5, and a peripheral flange 4a of the drain main body 1 is formed inside. Upper surface Q ₁ , inner surface Q ₂ and inner lower surface Q ₃
Bent into a substantially U-shaped folded shape consisting of three surfaces
b, the inner peripheral surface of the male screw cylinder 5 is pressed into the outer peripheral surface of the drain main body 4 and the upper surface D ₁ , the side surface D ₂ and the peripheral flange 5b of the peripheral flange 5b of the male screw cylinder 5 are formed. A substantially U-shaped fold formed of three surfaces of an inner upper surface Q ₁ , an inner surface Q _2, and an inner lower surface Q ₃ of the peripheral flange 4 a of the drain main body 4 on three surfaces of a back surface D ₃ as a lower surface of the peripheral step portion 5 d formed on the back surface. The bent portion 4b is clamped and press-fitted, and the upper surface D ₁ , the side surface D _2, and the back surface D ₃ of the peripheral flange portion 5b of the male screw cylinder 5 are respectively formed on the inner upper surface of the peripheral flange portion 4a of the drain main body 4. The three surfaces Q ₁ , the inner surface Q ₂ and the inner lower surface Q ₃ are each brought into close contact with each other.

Reference numeral 6 denotes a fixing nut, which is made of a synthetic resin such as polypropylene, and has a female screw portion 6a which can be screwed to the male screw portion 5a.

The male screw cylinder 5 is made of a synthetic resin having a coefficient of linear expansion close to the coefficient of linear expansion of stainless steel, copper, or a copper alloy, which is the material of the drain body 4, so that the drain body 4 and the male body can be connected to each other. Water tightness with the screw cylinder 5 can be improved.

Reference numeral 7 denotes a packing, which is annularly made of rubber or elastic material, for example, is made of styrene-based elastomer, and is provided between the peripheral flange 5b of the male screw cylinder 5 and the sink S of the sink M. The back surface of the peripheral flange portion 5b of the male screw cylinder 5 and the sink M
Are formed integrally with the surface of the sink S.

In this case, an annular projection 5c which can be pressed against the surface of the packing 7 is integrally formed on the rear surface of the peripheral flange 5b of the male screw cylinder 5 so as to protrude.

Since the first embodiment of the present invention has the above configuration, the drainage container 1 having an open container shape having a peripheral flange 1b at the opening edge is provided in the mounting hole K at the bottom of the sink S of the sink M,
The cage body 3 is detachably provided in the drain container body 1, the drain port portion 2 is provided in the drain container body 1, the male screw portion 5 a is provided on the outer peripheral surface of the drain container body 1, and the male screw portion 5 a is made of synthetic resin. The female screw portion 6a of the fixing nut 6 is screwed, and the drainage container 1 is attached and fixed to the sink S. At this time, the drainage container 1 is made of stainless steel having a peripheral flange 4a at the opening edge. , A drainage body 4 made of copper or a copper alloy, and a male screw cylinder 5 made of synthetic resin fixed to the drainage body 4 and having the male screw portion 5a. The inner surface of the drainage body 4 made of copper or copper alloy, and the surface that comes into contact with the drainage can be a stainless steel surface, a copper surface, or a copper alloy surface. In addition, germs suppress the growth and slimming and odor generation It is easy to remove and clean, and it is possible to improve the cleanliness and reduce the recycling cost. Further, the drainage body 4 made of stainless steel, copper or copper alloy has a male screw cylinder made of synthetic resin. Since the drainage container body 1 is formed by fixing the body 5, the male screw portion 5a can be easily manufactured by resin molding using the male screw cylindrical body 5 made of synthetic resin.
Drainage body inner upper surface Q ₁ the peripheral flange portion 4a of 4, the inner surface Q ₂ and the inner bottom surface Q as well as the form peripheral flange portion 5b integrally with the opening edge
₃ is formed into a substantially U-shaped folded shape having three surfaces, and the upper surface D ₁ , the side surface D _2, and the lower surface D ₃ of the peripheral flange portion 5 b of the male screw cylinder 5 are provided on the peripheral flange of the drain body 4. The upper surface D ₁ , the side surface D _2, and the back surface D ₃ of the peripheral flange portion 5 b of the male screw cylinder 5 are formed on the inner surface Q of the peripheral flange portion 4 a of the drain main body 4, respectively. the three sides of the ₂ and the inner bottom surface Q ₃ can be brought into close contact, respectively, the drainage body 4 and the peripheral flange portion 5b of the male screw cylindrical body 5 with a male screw cylindrical body 5 can be securely fixed
And water leakage from between the drainage body 4 and the peripheral flange 4a can be reliably prevented.

In this case, an annular packing 7 is interposed between the peripheral flange 5b of the male screw cylinder 5 and the sink S of the sink M, and the male screw cylinder 5 is provided on the front and back surfaces of the packing 7. Is provided on the back surface of the peripheral flange portion 5b and the surface of the sink S of the sink M, so that the watertightness between the drainage container 1 and the sink S can be improved. In this case, since the annular convex portion 5c which can be pressed against the surface of the packing 7 is provided on the back surface of the peripheral flange portion 5b of the male screw cylinder 5, the watertightness between the drainage container 1 and the sink S is further improved. In this case, drainage can be performed by manufacturing the male screw cylinder 5 with a synthetic resin having a linear expansion coefficient close to the linear expansion coefficient of stainless steel, copper, or a copper alloy, which is the material of the drainage body 4. The watertightness between the main body 4 and the male screw cylinder 5 can be further enhanced.

The second embodiment shown in FIG. 7 shows another structure. In this case, in addition to the annular packing 7 interposed between the peripheral flange 5b of the male screw cylinder 5 and the sink S of the sink M, Another annular packing 7 is interposed between the sink S of the sink M and the fixing nut 6, and the packing 7 is provided on the front and back surfaces of the sink S and the fixing nut 7 on the front and back surfaces of the sink 7. Since the annular convex portion 7a that can be pressed is provided, the watertightness between the drainage container 1 and the sink S can be further improved.

The present invention is not limited to the above-described embodiment. For example, the shape of the sink of the stainless steel sink and the size and the shape of the drainage container 1 can be appropriately designed and changed.

[0018]

As described above, according to the first aspect of the present invention, an open container-shaped drainage container having a peripheral flange at the opening edge is provided in the mounting hole at the bottom of the sink of the sink. , A cage body is detachably provided in the drain container body, a drain port is provided in the drain container body, a male screw portion is provided on an outer peripheral surface of the drain container body, and a female screw portion of a synthetic resin fixed nut is provided in the male screw portion. The drain container is attached to the sink and fixed. At this time, the drain container has a drain body made of stainless steel, copper or a copper alloy having a peripheral flange at an opening edge, and a drain body. Is fixed to the male screw cylindrical body made of a synthetic resin having the male screw portion, so that the inner surface of the drainage container body is an inner surface of a drainage body made of stainless steel, copper, or a copper alloy,
The surface that comes in contact with the drainage can be stainless steel surface, copper surface or copper alloy surface, which can suppress the adhesion of dirt substances compared to the synthetic resin surface, and can suppress the growth of various bacteria and slimming and the generation of offensive odor. Can be easily removed and cleaned.
It is possible to improve the cleanliness and reduce the recycling cost.Furthermore, a synthetic resin male screw cylinder is fixed to a drain body made of stainless steel, copper or a copper alloy to form a drain container body. Since the male screw portion can be easily manufactured by resin molding using a male screw cylindrical body made of synthetic resin, the peripheral flange portion is integrally formed on the opening edge of the male screw cylindrical body, and the drainage body is formed. Is formed in a substantially U-shaped folded shape formed by three surfaces of an inner upper surface, an inner surface, and an inner lower surface, and a drain body is formed on the upper surface, the side surface, and the back surface of the peripheral flange of the male screw cylinder. Because the peripheral collar of
The inner upper surface, the inner side surface, and the inner lower surface of the peripheral flange portion of the drain main body can be respectively brought into close contact with the upper surface, the side surface, and the rear surface of the peripheral flange portion of the male screw cylindrical body. Can be securely fixed, and water leakage from between the peripheral flange of the male screw cylinder and the peripheral flange of the drain main body can be reliably prevented.

In the invention according to the second aspect, an annular packing is interposed between the peripheral flange portion of the male screw cylinder and the sink of the sink, and the male screw cylinder is provided on the front and back surfaces of the packing. The invention according to claim 3, wherein an annular convex portion that can be pressed against the back surface of the peripheral flange portion of the body and the surface of the sink of the sink is provided, so that the watertightness between the drainage container body and the sink can be improved. In the above, since the annular convex portion that can be pressed against the surface of the packing is provided on the back surface of the peripheral flange portion of the male screw cylindrical body, the watertightness between the drainage container body and the sink can be further improved, or,
In the invention according to claim 4, in addition to the annular packing interposed between the peripheral flange portion of the male screw cylinder and the sink of the sink, a gap between the sink of the sink and the fixing nut is provided. Another annular packing is interposed, and an annular convex portion that can be pressed against the back surface of the sink of the sink and the surface of the fixed nut is provided on the surface and the back surface of the packing, so that the water tightness between the drainage container body and the sink is improved. Claim 5 can be further improved.
In the described invention, the watertightness between the drainage body and the male screw cylinder can be enhanced by forming the male screw cylinder with a material that approximates the linear expansion coefficient of the material of the drainage body.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a first embodiment of the present invention.

FIG. 2 is a partial side sectional view of the first embodiment of the present invention.

FIG. 3 is a partially enlarged sectional view of the first embodiment of the present invention.

FIG. 4 is an exploded perspective view of the first embodiment of the present invention.

FIG. 5 is a cross-sectional side view of the first embodiment of the present invention in a separated side.

FIG. 6 is a partially enlarged sectional view of the first embodiment of the present invention.

FIG. 7 is a partially enlarged sectional view of a second embodiment of the present invention.

FIG. 8 is a partial sectional view of a conventional structure.

[Explanation of symbols]

M sink S sink K mounting hole D ₁ top D ₂ sides D ₃ backside Q ₁ in the upper surface Q ₂ in the inner surface Q ₃ lower surface 1 drainage container body 2 drainage port portion 3 car body 4 drainage body 4a peripheral flange portion 4b bent portion Reference Signs List 5 male screw cylinder 5a male screw part 5b peripheral flange part 5c annular convex part 6 fixing nut 6a female screw part 7 packing 7a annular convex part

Claims (5)

[Claims] An installation hole is provided at the bottom of a sink of a sink,
An opening container-shaped drainage container having a peripheral flange portion at an opening edge in the mounting hole, a cage body detachably provided in the drainage container, and a drainage port provided in the drainage container; A male screw portion is provided on the outer peripheral surface of the body, a female screw portion of a synthetic resin fixed nut is screwed to the male screw portion, and the drainage container body has a stainless steel having a peripheral flange portion at an opening edge, A drain main body made of copper or a copper alloy, comprising a synthetic resin male screw cylinder fixed to the drain body and having the male screw portion,
A peripheral flange is formed integrally with the opening edge of the male screw cylinder, and the peripheral flange of the drainage body is bent into a substantially U-shaped folded shape comprising three surfaces of an inner upper surface, an inner surface, and an inner lower surface. The drainage body is formed on the upper surface, the side surface and the rear surface of the peripheral flange portion of the male screw cylindrical body. A sink drainage device characterized by being crimped. 2. An annular packing is interposed between a peripheral flange portion of the male screw cylinder and the sink of the sink, and a back surface of the peripheral flange portion of the male screw cylinder is provided on a surface and a back surface of the packing. 2. The sink drainage device according to claim 1, wherein an annular convex portion that can be pressed against the surface of the sink is provided on the surface of the sink. 3. The drain device for a sink according to claim 1, wherein an annular convex portion is provided on the back surface of the peripheral flange portion of the male screw cylinder so as to be able to press against the surface of the packing. 4. An annular gasket is interposed between the sink of the sink and the fixing nut, and an annular convex portion press-contactable on the front and back surfaces of the packing with the back surface of the sink of the sink and the surface of the fixing nut. The sink drainage device according to any one of claims 1 to 3, further comprising: 5. The drain of a sink according to claim 1, wherein the male screw cylindrical body is formed of a material that approximates the linear expansion coefficient of the material of the drain main body. apparatus.