CN202612400U

CN202612400U - Bearing seal structure

Info

Publication number: CN202612400U
Application number: CN 201220238702
Authority: CN
Inventors: 李威
Original assignee: ZHEJIANG GUNAI RUBBER PLASTIC TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG GUNAI RUBBER PLASTIC TECHNOLOGY Co Ltd
Priority date: 2012-05-22
Filing date: 2012-05-22
Publication date: 2012-12-19
Anticipated expiration: 2022-05-22

Abstract

The utility model relates to the mechanical technology field, in particular to a bearing seal structure. The bearing seal structure comprises a bearing inner ring, a bearing outer ring and a ring-shaped seal element, wherein the ring-shaped seal element is arranged between the bearing outer ring and the bearing inner ring, the ring-shaped seal element comprises a dustproof cover and a rubber seal ring, the dustproof cover is made from rigid materials, the rubber seal ring is pasted on the dustproof cover, the radial outer end of the dustproof cover is embedded in a dustproof slot which is arranged in the bearing outer ring, and the radial outer end of the dustproof cover is arranged in a curling mode. A seal lip of the rubber seal ring is arranged on one end of the radial inner side of the dustproof cover, steps with high outer ends and low inner ends are arranged on the outer circumference of the end portion of the bearing inner ring, and the seal lip of the rubber seal ring is propped on the surfaces of the steps to form contact seal matching. Compared with the prior art, the bearing seal structure has excellent seal effect, and also enables the seal element not to be thrown out during the high-speed operation process of a bearing.

Description

Bearing seal structure

Technical field

The utility model relates to field of mechanical technique, is specifically related to the sealing configuration of bearing.

Background technique

Sealing configuration on the bearing plays in the bearing using process and prevents that introduced contaminants from getting into the inner parts of bearing; Major function is to prevent that impurity from entering into bearing interior space; In order to reduce bearing in use, because of introduced contaminants gets into the influence of bearing inside to bearing life.The existing bearing sealing has two kinds of forms usually: a kind of is that dust cover seals (as shown in Figure 1); Adopt clearance seal between dust cover and the inner ring; In the more abominable place of working environment; It is inner to cause introduced contaminants to get into bearing easily, also might cause grease outwards to overflow along the gap simultaneously; A kind of is that rubber seal seals (as shown in Figure 2); Impurity gets into and grease is excessive though can solve; But seal ring and outer ring seal groove place interference fit are easy to cause Sealing when work, to be thrown out of when bearing runs up, thereby have lost seal action.

Summary of the invention

To the deficiency that existing technology exists, the purpose of the utility model is to provide a kind of effect that can satisfy sealing, is unlikely to bearing again and the bearing seal structure that Sealing is thrown out of in the process that runs up, occurs.

For realizing above-mentioned purpose; The utility model provides following technological scheme: a kind of bearing seal structure; Include bearing inner race, bearing outer ring and lip ring; Described lip ring is characterized in that between bearing outer ring and bearing inner race: described lip ring comprises the dust cover that rigid material is processed; Said dust cover radial outer end end is inlaid in the dustproof groove that the bearing outer ring inboard is provided with, and the dust cover the other end is provided with rubber seal; The excircle of said bearing inner race end is provided with high outside and low outside step, and the sealing lip of rubber seal is conflicted and on step surface, formed the contact seal cooperation.

Through adopting technique scheme, rubber seal is set on dust cover, dust cover is inlaid in the dustproof groove of bearing outer ring, the sealing lip of rubber seal and bearing inner race contact seal; Make bearing in the process that runs up, be unlikely to throw Sealing out, can also play simultaneously the excessive of the entering that prevents dust, silt etc. and grease.

The utility model further is set to: the end that described dust cover radially is installed in the dustproof groove is the crimping setting.

Through adopting technique scheme, crimping is provided with down, and is more closely reliable when dust cover is inlaid in the dustproof groove, guarantees that further bearing in the process that runs up, is unlikely to throw Sealing out.

The utility model further is set to: described step forms radial circumference face and axial end, and the seal lip of said rubber surface circle is towards axial end, and seal lip and axial end have axial magnitude of interference.

Through adopting technique scheme; Seal lip and axial end form axial magnitude of interference; Seal lip is pressed on and produces certain deformation on the bearing inner race, increases sealing elasticity, further improves seal lip and the sealability between the bearing inner race on the rubber seal.

The utility model further is set to: the inner round portion of described dust cover is provided with towards bearing axial end portion evagination.

Said structure is provided with in order to enlarge bearing interior space.

The utility model further is set to: described dust cover inner end is provided with annular protrusion; Corresponding rubber seal is provided with the groove that supplies annular protrusion to embed, and said dust cover and rubber seal are sticked in the groove on the annular protrusion embedding rubber seal of back on it.

Through adopting technique scheme, annular protrusion has bonding area and annular protrusion and the groove fit formation limit mounting that increases rubber seal and dust cover, makes that the connection of rubber seal and dust cover is reliable.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is the dust cover formula bearing seal structure schematic representation of background technique;

Fig. 2 is the rubber seal formula bearing seal structure schematic representation of background technique;

Fig. 3 is the bearing seal structure schematic representation of the utility model specific embodiment.

Embodiment

As shown in Figure 3, the disclosed a kind of bearing seal structure of the utility model comprises bearing inner race 2, bearing outer ring 1 and lip ring; Described lip ring is located between bearing outer ring 1 and the bearing inner race 2.Described bearing outer ring 1 inboard is provided with dustproof groove 10; The excircle of said bearing inner race 2 ends is provided with high outside and low outside step 21, thereby step 21 forms circular radial side face 211 and axial end 210; Described lip ring comprises the dust cover 3 (rigid pipe that dust cover 3 adopts plastics or metallic material to process) of disk-like structure and is attached at the rubber seal 4 on the dust cover 3; Described dust cover 3 radial outer ends are inlaid in the dustproof groove 10; And dust cover 3 should adopt crimping 30 to be provided with by end; Certainly this end also can adopt expand, flanging setting settings such as (reaching some projections of flanging arranged outside radial protrusion); But adopt crimping 30 that simple and reliable installation are set, so the utility model preferentially adopts crimping 30 to be provided with; In this specific embodiment, crimping 30 is the ear shape towards bearing outside turnup.

For making Sealing have excellent sealing performance, described dust cover 3 radial inner end are provided with the sealing lip 40 of rubber seal 4, and the lip of the sealing lip 40 of rubber seal 4 is conflicted and on step surface, formed the contact seal cooperation.In this specific embodiment; The sealing lip 40 of described rubber seal 4 is provided with towards axial end 210; Sealing lip 40 has axial magnitude of interference (this axial magnitude of interference is expressed as R among Fig. 3, is the preceding states of sealing lip 40 distortion for expressing magnitude of interference shown in Figure 3) with axial end 210.Certainly rubber seal 4 also can adopt the setting of many sealing lips.

In this specific embodiment, the inner round portion of described dust cover 3 is provided with towards bearing axial end portion evagination.This spline structure is provided with in order to enlarge bearing interior space.

For further making the reliable installation between rubber seal 4 and the dust cover 3; The end of described dust cover 3 inner round portion is provided with annular protrusion 31; Corresponding rubber seal 4 is provided with the groove 41 that supplies annular protrusion 31 to embed, and the annular protrusion 31 on rubber seal 4 and the dust cover 3 on the company's of subsides back dust cover 3 embeds spacing connections of formation in the groove 41 of rubber seal 4.Annular protrusion 31 has to be increased rubber seal 4 and cooperates the formation limit mounting with groove 41 with the bonding area and the annular protrusion 31 of dust cover 3, makes the reliable connection of rubber seal 4 and dust cover 3.

Claims

1. a bearing seal structure includes bearing inner race, bearing outer ring and lip ring, and described lip ring is characterized in that between bearing outer ring and bearing inner race: described lip ring comprises the dust cover that rigid material is processed; Said dust cover radial outer end end is inlaid in the dustproof groove that the bearing outer ring inboard is provided with, and the dust cover the other end is provided with rubber seal; The excircle of said bearing inner race end is provided with high outside and low outside step, and the sealing lip of rubber seal is conflicted and on step surface, formed the contact seal cooperation.

2. bearing seal structure according to claim 1 is characterized in that: the end that described dust cover radially is installed in the dustproof groove is the crimping setting.

3. bearing seal structure according to claim 1 is characterized in that: described step forms radial circumference face and axial end, and the seal lip of said rubber surface circle is towards axial end, and seal lip and axial end have axial magnitude of interference.

4. bearing seal structure according to claim 1 is characterized in that: the inner round portion of described dust cover is provided with towards bearing axial end portion evagination.

5. bearing seal structure according to claim 1; It is characterized in that: described dust cover inner end is provided with annular protrusion; Corresponding rubber seal is provided with the groove that supplies annular protrusion to embed, and said dust cover and rubber seal are sticked in the groove on the annular protrusion embedding rubber seal of back on it.