CN202274088U

CN202274088U - Sealing gasket

Info

Publication number: CN202274088U
Application number: CN2011203359183U
Authority: CN
Inventors: 张培勇; 唐之胜; 陈小勇; 马业存; 陈宏庆; 龚强
Original assignee: Anhui Zhongding Keumah Auto Hose and Pipe Assembly Co Ltd
Current assignee: Anhui Zhongding Keumah Auto Hose and Pipe Assembly Co Ltd
Priority date: 2011-09-08
Filing date: 2011-09-08
Publication date: 2012-06-13
Anticipated expiration: 2021-09-08

Abstract

The utility model discloses a sealing gasket. The sealing gasket comprises a rubber ring (2) and a metal ring (1), wherein the outer peripheral surface of the rubber ring (2) is matched with and fixedly connected with the inner peripheral surface of the metal ring (1); and radial annular bumps (3) are arranged on the inner peripheral surface of the rubber ring (2). When the sealing gasket is extruded in a working state, a part of material of the rubber ring is extruded to gap parts on the two sides of an annular convex opening, the rubber material is not adhered to the metal ring, and the metal ring directly bears a compression force. At the time, the compression force born by the sealing gasket is mainly balanced through the plastic deformation of the metal ring, and even the rubber ring is softened by rising temperature, the compression force born by the sealing gasket is not changed substantially, so the sealing effect is ensured.

Description

A kind of seal washer

Technical field

The utility model relates to the mechanical sealing technology field, relates in particular to a kind of seal washer.

Background technique

Seal washer is a kind of air locking in field extensive uses such as machinery, hydraulic pressure and FLUID TRANSPORTATION.At present, relatively the structure of a kind of seal washer commonly used is as shown in Figure 1, and it comprises rubber ring 2 and metal ring 1, and rubber ring 2 seals, and 1 skeleton supporting effect of metal ring is for rubber ring 2 provides support.

Down, seal washer is between two interconnective parts in working order, and seal washer is blocked the slit between two parts under pressure, thereby plays seal action.When seal washer is squeezed; Rubber ring 2 deforms, and wherein the part of rubber ring 2 sticks on the metal ring 1, is illustrated in figure 2 as seal washer and is in the structural representation under the working state; Rubber ring 2 directly bears all impacting forces, 2 main seal actions of rubber ring this moment.When seal washer used under hot environment, rubber ring 2 was softening, and the impacting force that seal washer receives is not enough, produced the untight problem of assembling, between two interconnected parts, produced the slit thus, finally caused seal failure.

The model utility content

Said based on background technique, the order of the utility model is to propose a kind of reliable sealing seal washer, avoids problem in the existing technology the problem includes: Yin Wendu raises and causes the problem of seal failure.

For realizing above-mentioned purpose, the utility model proposes a kind of seal washer, comprises rubber ring and metal ring, the outer circumferential face of rubber ring and the inner peripheral surface of metal ring coupling and affixed, the inner peripheral surface setting annular projection radially of said rubber ring.

Preferably, the center line of ring-type tang overlaps with the radial centre lines of rubber ring.

Preferably, rubber ring is processed by butadiene acrylonitrile rubber.

Preferably, metal ring is processed by red copper.

Compared with prior art, the utlity model has following beneficial effect:

In the technological scheme that the utility model proposes; The inner peripheral surface setting annular projection radially of rubber ring; When under seal washer is in working state, being squeezed; A part of material of rubber ring is pressed to the gap of tang both sides, and rubber material no longer sticks on the metal ring, makes metal ring directly bear impacting force.The impacting force that seal washer receives is mainly come balance through the plastic deformation of metal ring, even if rubber ring Yin Wendu raises and softens, the impacting force that seal washer bears also can be constant basically.In other words, the slit can not occur between two connected elements, the problem of seal failure more can not occur.Therefore, the seal washer that the utility model proposes plays sealing effect through the acting in conjunction of metal ring and rubber ring, can guarantee the enough fitting tights of sealed department potential energy in the higher occasion of temperature, has solved because of the softening problem that causes seal failure of rubber ring.

Description of drawings

According to embodiment and accompanying drawing the utility model is done further explain below.

Fig. 1 is the structural representation of a kind of typical seal washer under off working state in the existing technology;

Fig. 2 is a seal washer shown in Figure 1 structural representation under in working order;

Fig. 3 is the structural representation of the seal washer that a kind of embodiment provided of the utility model;

Fig. 4 is a seal washer shown in Figure 3 structural representation under in working order.

Embodiment

To combine accompanying drawing that the technological scheme in the utility model is carried out clear, complete description below, obviously, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment of the utility model, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope that the utility model is protected.

A kind of gasket structure such as Fig. 3 and shown in Figure 4 that the utility model proposes, Fig. 3 is the sectional view of sealing packing ring, Fig. 4 is the structural representation of sealing packing ring under in working order.

The seal washer of the proposition of the utility model comprises metal ring 1 and rubber ring 2, the inner peripheral surface of eyelet 2 and the outer circumferential face of rubber ring coupling and affixed, the inner peripheral surface setting of rubber ring 2 annular projection 3 radially.Preferably, the center line of ring-type tang 3 overlaps with the radial centre lines of rubber ring 2.Rubber ring 2 is processed by butadiene acrylonitrile rubber.Metal ring 1 is processed by red copper.

Inner peripheral surface setting annular projection 3 radially through rubber ring 2; When under seal washer is in working state, being squeezed; A part of material of rubber ring 2 is pressed to the gap of tang 3 both sides, and rubber material no longer sticks on the metal ring 1, makes metal ring 1 directly bear impacting force.At this moment, the impacting force that seal washer receives is mainly come balance through the plastic deformation of metal ring 1, even if rubber ring 2 softens because of temperature raises, the impacting force that seal washer bears is also constant basically, thereby has guaranteed sealing effect.

Therefore, the seal washer that the utility model proposes plays sealing effect through the acting in conjunction of metal ring and rubber ring, can guarantee the enough fitting tights of sealed department potential energy in the higher occasion of temperature, has solved because of the softening problem that causes seal failure of rubber ring.

Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the realization of the utility model does not receive the restriction of aforesaid way; As long as adopted method design of the utility model and the various improvement that technological scheme is carried out; Or the design of the utility model and technological scheme are directly applied to other occasion without improving, all in the protection domain of the utility model.

Claims

1. a seal washer is characterized in that, comprises rubber ring (2) and metal ring (1), and the inner peripheral surface coupling of the outer circumferential face of said rubber ring (2) and said metal ring (1) is also affixed, at the inner peripheral surface setting annular projection (3) radially of said rubber ring (2).

2. seal washer as claimed in claim 1 is characterized in that, the center line of said ring-type tang (3) overlaps with the radial centre lines of rubber ring (2).

3. according to claim 1 or claim 2 seal washer is characterized in that said rubber ring (2) is processed by butadiene acrylonitrile rubber.

4. seal washer as claimed in claim 3 is characterized in that, said metal ring (1) is processed by red copper.