CN202883742U - Sealing ring for joint bearing - Google Patents

Abstract

The utility model relates to a sealing ring for a joint bearing. The sealing ring comprises an annular steel framework, and a sealing ring which coats the steel framework and is made from a nitrile rubber material, wherein an inner ring of the sealing ring is in the shape of a cone frustum; an inclined surface is formed on the edge of the bottom surface of an outer ring of the sealing ring; and an annular groove with a semicircular section is formed adjacent to the edge of the top surface of the sealing ring. The sealing ring for the joint bearing disclosed by the utility model is simple in structure; the sealing ring made from the nitrile rubber material is matched with the steel framework, so that the service life of the sealing ring is longer than that of common sealing rings; and with the adoption of the annular groove and the inclined surface simultaneously, the sealing ring is more convenient to be embedded in a sealing ring groove while the elastic capacity of the sealing ring is enhanced, so that the matching between the sealing ring and the sealing ring groove is closer, the tightness of the bearing is ensured, and the good dustproof and waterproof effects of the sealing ring are achieved.

Description

The joint shaft bearing seal ring

Technical field

The utility model relates to a kind of joint shaft bearing seal ring.

Background technique

The sealing problem of various axial workpieces is perplexing machine building industry always, although all kinds of Sealing emerges in an endless stream, does not fundamentally solve yet the leakage problem of machine (such as joint shaft bearing).Main cause is that to make the material of seal ring easily aging or damaged, in case break or wear and tear in the sealing lip limit of seal ring, just cause seal ring to lose efficacy, make dust easily invade in the joint shaft bearing, thereby aggravate the wearing and tearing of joint shaft bearing, cause shortening the working life of joint shaft bearing.

The model utility content

Technical problem to be solved in the utility model provides a kind of good sealing effect, can prevent effectively that dust from entering the joint shaft bearing seal ring of bearing inside.

In order to address the above problem, the utility model provides a kind of joint shaft bearing seal ring, comprising: annular Steel Skeleton, be coated on the seal ring of being made by the nitrile rubber material on the Steel Skeleton.

The interior ring of described seal ring is truncated cone, and the bottom edge of outer shroud is provided with the inclined-plane, and contiguous top edge place is provided with the circular groove of cross section semicircular in shape.

The utility model has positive effect with respect to prior art: joint shaft bearing of the present utility model is simple with ring structure, the seal ring that adopts the nitrile rubber material to make matches with Steel Skeleton, make the working life of sealing circle higher than general seal ring, adopt simultaneously the design on circular groove and inclined-plane, when making the elasticity capacity grow of seal ring, can be convenient in the seal ring embedding sealing ring recess, so that seal ring is tightr with cooperating of seal groove, guaranteed the sealing of bearing, made seal ring have good dust-proof effect and waterproofing effect.

Description of drawings

For content of the present utility model is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the utility model is described in further detail, wherein:

Fig. 1 is the structural drawing that joint shaft bearing of the present utility model is used seal ring.

Embodiment

See Fig. 1, the joint shaft bearing seal ring of the present embodiment comprises: annular Steel Skeleton 1, be coated on the seal ring 2 of being made by the nitrile rubber material on the Steel Skeleton 1.

The interior ring 2-1 of described seal ring 2 is truncated cone, and the bottom edge of outer shroud 2-2 is provided with the inclined-plane, and contiguous top edge place is provided with the circular groove 2-3 of cross section semicircular in shape.

The seal ring 2 that the utility model adopts the nitrile rubber material to make matches with Steel Skeleton 1, make the working life of sealing circle 2 higher than general seal ring, adopt simultaneously the design on semi-circular recesses 2-3 and inclined-plane, when making the elasticity capacity grow of seal ring 2, can be convenient in the seal ring 2 embedding sealing ring recess, so that seal ring 2 is tightr with cooperating of seal groove, guaranteed the sealing of bearing, make seal ring 2 have good dust-proof effect and waterproofing effect.

Obviously, above-described embodiment only is for the utility model example clearly is described, and is not to be restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all mode of executions exhaustive.And these belong to apparent variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.

Claims (1)

1. joint shaft bearing seal ring is characterized in that comprising: annular Steel Skeleton, be coated on the seal ring on the Steel Skeleton;

The interior ring of described seal ring is truncated cone, and the bottom edge of outer shroud is provided with the inclined-plane, and contiguous top edge place is provided with the circular groove of cross section semicircular in shape.

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