JP3042758U - Drainage leak prevention device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a drainage leak prevention device capable of effectively preventing leakage of water from a connecting portion between a sewer pipe and a drainage pipe. SOLUTION: A ring rubber (4) having a substantially cylindrical shape is fitted into the adapter (1) and is tightened with a lock nut (3) to firmly attach the ring rubber (4) and the drain pipe (9).

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is a device for preventing drainage leaks formed in an adapter section that connects a sewer pipe and a drainage pipe, and more specifically, when drainage flows backward due to clogging of the drainage pipe, the drainage drains the drainage pipe and the drainage pipe. This is a device that prevents leakage from the connected adapter.

[0002]

[Problems to be solved by the device]

 Wastewater generated at home is discharged from the drainage pipe to the sewer pipe. However, when the drainage flows back from the sewer pipe, the drainage may leak from the connection part between the drainage pipe and the sewer pipe. Therefore, an object of the present invention is to provide a drainage leak prevention device that can effectively prevent leakage of water from such a connecting portion.

[0003]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention employs a means of fitting a ring-shaped rubber ring into the adapter and tightening it with a lock nut so that the ring rubber and the drainage pipe are firmly attached. The action of the solving means will be described below with reference to the drawings.

FIG. 1 is a vertical sectional view showing an embodiment of the present invention. On the inner surface of the ring rubber (4), a plurality of rows of crescent-shaped protrusions (5a) are provided over approximately one half of the inner diameter. The protrusion of the bellows drainage pipe (9) fits into the crescent-shaped recess (5b) formed between the crescent-shaped protrusions (5a). This prevents drainage from leaking to the outside along the outer periphery of the bellows part of the drain pipe (9).

Further, the inner side surface of the adapter (1) which is in contact with the ring rubber (4) is an inclined surface whose diameter decreases downward, and moreover, between the ring rubber (4) and the adapter (1). Since the sliding ring (7) is interposed in the ring, when the lock nut (3) is tightened from the outer surface of the adapter (1), the ring rubber (4) slides down as the sliding ring (7) slides downward. As a result, the drain pipe (9) is firmly tightened by the ring rubber (4). Therefore, the drain pipe (9) and the ring rubber (4) are firmly adhered to each other regardless of the shape of the drain pipe such as the bellows or the straight, and thus the drain can be prevented from leaking to the outside as much as possible. Here, the outer side surface of the ring rubber (4) is provided with a plurality of rows of recesses (6) over the entire circumference, which is a space for releasing the pressing force applied to the ring rubber (4).

Further, in the device according to the second aspect, the convex portion (11) is provided on the inner side surface of the ring rubber (4) over the entire circumference. The convex portion (11) is to be fitted into the concave portion (6) of the ring rubber (4) to prevent the ring rubber (4) from being vertically displaced.

[0007]

[Embodiment of the invention]

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. 2 is a plan view of the adapter (1), and FIG. 3 is a longitudinal sectional view of the same. The adapter (1) has a substantially cylindrical shape, and a thread (2a) is provided on the upper outer peripheral surface thereof. In addition, the vicinity of the inner surface of the upper part is a slope that decreases in diameter downward. The lower part of the adapter (1) is used by inserting it into the sewer pipe (10) as shown in FIG. The adapter (1) is preferably made of hard plastic such as vinyl chloride resin.

FIG. 4 is a plan view of the lock nut (3), and FIG. 5 is a vertical sectional view thereof. The lock nut (3) is a substantially cylindrical member having an octagonal shape in a plan view and having an open portion with a small diameter on the upper surface and an open portion with a large diameter on the bottom surface. ) Is provided. The lock nut (3) is preferably made of a hard plastic such as vinyl chloride resin.

FIG. 6 is a plan view of the ring rubber (4), and FIG. 7 is a longitudinal sectional view of the same. The ring rubber (4) is a substantially cylindrical member, and the inner peripheral surface thereof is provided with a plurality of rows of crescent-shaped convex portions (5a) over approximately one-half of the inner diameter. A crescent-shaped concave portion (5b) is automatically formed between the crescent-shaped convex portions (5a). Furthermore, the outer peripheral surface of the ring rubber (4) is provided with a plurality of rows of recesses (6) all around. The ring rubber (4) having the above-mentioned configuration is preferably made of soft rubber.

FIG. 8 is a perspective view of the sliding ring (7). The sliding ring (7) has a substantially cylindrical shape and a tapered shape in which the diameter is reduced downward. The sliding ring (7) has a lateral side open in the vertical direction. The ring rubber (4) is provided on its inner surface with a convex portion (11) extending over the entire circumference. The sliding ring (7) having the above-mentioned configuration is preferably made of soft rubber.

[0011]

[Effect of the invention]

 Since the present invention is configured as described above, it is possible to provide a drainage leak prevention device that can effectively prevent leakage of drainage from the connection between the drainage pipe and the sewer pipe.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an implementation state of the present invention.

FIG. 2 is a plan view of the adapter (1).

FIG. 3 is a longitudinal sectional view of the same.

FIG. 4 is a plan view of the lock nut (3).

FIG. 5 is a vertical sectional view of the same.

FIG. 6 is a plan view of the ring rubber (4).

FIG. 7 is a vertical sectional view of the same.

FIG. 8 is a perspective view of the sliding ring (7).

[Explanation of symbols]

 1 ・ ・ Adapter 2a, 2b ・ ・ Screw thread 3 ・ ・ Lock nut 4 ・ ・ Ring rubber 5a ・ ・ Crescent convex portion 5b ・ ・ Crescent concave portion 6 ・ ・ Concave portion 7 ・ ・ ・ Slive ring 8 ..Drainage pipes 10 ... Sewer pipes 11 ...

Claims (2)

[Utility model registration claims] 1. An adapter (1) having a substantially cylindrical shape
And the thread (2a) is provided on the outer peripheral surface of the upper part of the adapter, and the inner surface of the upper part is a slanted surface that reduces in diameter downward. Lock nut (3)
3. A substantially cylindrical ring rubber (4) to be fitted into the adapter (1), which has a plurality of rows of crescent-shaped projections (5a) on its inner surface and which extends over the entire circumference on its outer surface. Multiple rows of recesses (6)
A ring-shaped rubber ring (4) and a ring-shaped rubber ring (4), and a ring-shaped rubber ring (4) and an adapter (1) which are interposed between the ring rubber (4) and the adapter (1). A drainage leak prevention device comprising: a sliding ring (7) which has a taper shape and which has a diameter that decreases toward the bottom. 2. The drainage leak prevention device according to claim 1, wherein a convex portion (11) is provided on the inner surface of the ring rubber (4) over the entire circumference.