CN2355168Y

CN2355168Y - Sealing ring

Info

Publication number: CN2355168Y
Application number: CN 98232025
Authority: CN
Inventors: 张五一; 肖凤生; 翟俊峰
Original assignee: HEFEI RONGSHIDA GROUP CO Ltd
Current assignee: HEFEI RONGSHIDA GROUP CO Ltd
Priority date: 1998-12-27
Filing date: 1998-12-27
Publication date: 1999-12-22
Anticipated expiration: 2008-12-27

Abstract

The utility model discloses a sealing ring for the connection of pipe fittings. The utility model is in a bushing shape, and the upper end face and the lower end face are mutually parallel. A through hole is arranged between the two end faces, and the outer wall of the through hole is a concave curved surface with two big ends and a small middle part. When external force acts on the upper end face and the lower end face, the sealing ring is extruded and deformed, the position of the pipe fitting wall on which the through hole is arranged is tightly clamped via shrinking and diminishing the hole diameter, and thus the reliable sealing is realized.

Description

Seal ring

The utility model discloses the seal ring that uses in a kind of pipe fitting connection.

The name that 1995.5.17 day is announced in the Chinese patent literature is called ^*Multifunctional expanded cushion rubber ^*(patent No. ZL94214408.2) is disclosed to be exactly the rubber washer that uses on a kind of automatic washing machine intake pipe connector, and respectively there is one 45 ° chamfering at the endoporus two ends, and it has sealing and linkage function.In the prior art; The wall thickness of cushion rubber equates that when its two ends were stressed, cushion rubber was not yielding, and between its inwall of distortion back and the water pipe for large size contacts, air-proof condition is not good enough, just can be deformed to the degree with water-stop when promptly cushion rubber need be subjected to bigger extruding force.

It is a kind of easily deformable and can play the seal ring of end face, side seal effect simultaneously that the purpose of this utility model is to provide.

For achieving the above object, the technical solution adopted in the utility model is: a kind of seal ring, seal ring is a cannula-like, its upper/lower terminal face is parallel to each other, one through hole is arranged between both ends of the surface, its outer wall is the concavity curved surface that two ends are big, the middle part is little, and when its both ends of the surface were subjected to the external force extruding, its inwall dwindled and the pipe fitting that is connected is sealed up.

Below in conjunction with drawings and Examples the utility model is further described in detail.

Fig. 1, the 2nd, structural representation of the present utility model;

Fig. 3 is to use state reference map.

As shown in Figure 1, seal ring 10 is a cannula-like, its upper/lower terminal face keeping parallelism, inside is a through hole, its outer wall 11 is the concavity curved surface that two ends are big, the middle part is little, the diameter of through-hole wall 12 is the convex curved surface that two ends are big, the middle part is little, and this structure promptly helps seal ring 10 distortion when stressed, also helps the insertion of connecting leg spare.When its upper/lower terminal face has external force crush seal circle 10, its through-hole wall 12 will deform, and promptly the aperture at its through-hole wall 12 middle parts diminishes contraction, with the pipe fitting outer wall banding that places in it, thereby realize sealing.

In Fig. 2, seal ring 10 is offered chamfering 14 near the through hole of its end, can insert easily in it with the body of realizing pipe fitting, there is a convex tendon 13 at the through hole middle part, convex tendon 13 annular configuration are on through-hole wall 12, and are and parallel with its both ends of the surface, are in order further to improve the reliability of sealing.

Fig. 3 provides a kind of being used for and enters flexible pipe water pipe connecting joint with washing machine, seal ring 10 is between

member

20,30, insert for water tap or pipe fitting at its middle part, tighten member 30, the upper/lower terminal face of seal ring 10 is stressed and deform, be that its through hole middle part diminishes contraction, and will place the pipe fitting outer wall banding in it, realized sealing.

Claims

1. seal ring is characterized in that: seal ring (10) is cannula-like, and its upper/lower terminal face is parallel, and a through hole is arranged between both ends of the surface, and its outer wall (11) is the concavity curved surface that two ends are big, the middle part is little.

2. seal ring according to claim 1 is characterized in that: the diameter of the through-hole wall (12) of seal ring (10) is the convex curved surface that two ends are big, the middle part is little.

3. seal ring according to claim 1 and 2 is characterized in that: there is convex tendon (13) at through-hole wall (12) middle part, and convex tendon (13) is along through-hole wall (12) circumference.

4. seal ring according to claim 1 and 2 is characterized in that: at least one end of through hole has chamfering (14).