CN203585119U

CN203585119U - Bearing dust cover

Info

Publication number: CN203585119U
Application number: CN201320794675.9U
Authority: CN
Inventors: 许加斌
Original assignee: NINGFAN BEARING Co Ltd
Current assignee: NINGFAN BEARING Co Ltd
Priority date: 2013-12-06
Filing date: 2013-12-06
Publication date: 2014-05-07
Anticipated expiration: 2023-12-06

Abstract

The utility model provides a bearing dust cover, belonging to the technical field of machinery. The bearing dust cover solves the technical problems of poor dust-proof property and the like in the dust covers in the prior art. The bearing comprises a bearing inner ring and a bearing outer ring which are arranged coaxially, wherein a plurality of balls are arranged between the bearing inner ring and bearing outer ring; a retainer for keeping the balls in position is also arranged between the bearing inner ring and bearing outer ring; the inner circle surface of the bearing outer ring is provided with a dust-proof tank; the dust cover comprises an annular body; the outer edge of the annular body is clamped in the dust-proof tank; the inner edge of the annular body extends towards the bearing inner ring; and the outer side wall of the annular body is provided with a magnetic sheet. The bearing dust cover has the advantages of high strength, favorable dust-proofing property and the like.

Description

A kind of bearing dustproof cover

Technical field

The utility model belongs to field of mechanical technique, relates to a kind of bearing dustproof cover.

Background technique

Bearing refers to and in mechanical transmission course, works the parts of fixing and reducing load friction factor.When other parts produce relative movement each other on axle, friction factor and retainer shaft central position that bearing can be used to reduce in power transmission process are fixed.Therefore, bearing is a kind of very important component in contemporary machinery.Its major function is supported mechanical solid of rotation, the mechanical load friction factor in order to reduction equipment in transmission process.Outside the ball of bearing is directly exposed to, a lot of designers have set up dust cover on bearing, avoid ball to be corroded by impurity such as dust, greasy dirts.

China patent CN 202348987U discloses a kind of shield bearing, this shield bearing mainly comprises outer ring, inner ring and steel ball, between outer ring and inner ring, arrange several steel balls, outer collar dustproof groove is all offered in the both sides of the inner headed face of outer ring, between outer ring and inner ring, arrange dust cover, the edge of dust cover arranges groove, and groove snaps in the outer collar dustproof groove of outer ring.The bearing that installs dust cover additional can effectively avoid the dust of job site to enter bearing inside at the construction field (site), thereby has avoided the inner stuck point phenomenon of bearing.

But, because bearing is applied in various machining equipments or power equipment conventionally, between the edge of dust cover and bearing inner race, still there is very large gap, in equipment, a lot of iron filings can directly enter bearing inside by this gap, and then corrode the parts such as ball, the working life of reducing bearing.

Summary of the invention

The utility model is the problems referred to above that exist for existing technology, and a kind of bearing dustproof cover is provided, and technical problem to be solved in the utility model is: the anti-dust performance that how to improve dust cover in this bearing.

The purpose of this utility model can realize by following technical proposal:

A kind of bearing dustproof cover, described bearing comprises bearing inner race and the bearing outer ring of coaxial setting, between described bearing inner race and bearing outer ring, be provided with several balls, between described bearing inner race and bearing outer ring, be also provided with the retainer for keeping ball position, on the inner headed face of described bearing outer ring, offer dustproof groove, it is characterized in that, described dust cover comprises an annular body, the outer edge of described annular body is connected in described dustproof groove, the inner edge portion of described annular body is extended towards the direction of described bearing inner race, on the outer side wall of described annular body, there is magnetic sheet.

Its working principle is as follows: the dust cover in the utility model is designed with magnetic sheet, in the time of near the iron filings in equipment enter dust cover, can be adsorbed in dust cover surface by the magnetic sheet on dust cover, thereby be difficult for arriving the gap location between dust cover and bearing inner race, and then avoid iron filings to enter bearing inside from this gap, improve the anti-dust performance of dust cover, guarantee the normal operation of bearing.

In above-mentioned a kind of bearing dustproof cover, the middle part of described annular body forms two grooves by flanging.Annular body forms two grooves by flanging, after flanging, can greatly improve the strength and stiffness of structure, thereby improve the bulk strength of dust cover, while avoiding dust cover riveting, produce distortion, and then avoid dust cover warpage to cause dust, iron filings easily to enter bearing inside, and improve the anti-dust performance of dust cover, guarantee the normal operation of bearing.

In above-mentioned a kind of bearing dustproof cover, the cross section of described two grooves is all rectangle.

In above-mentioned a kind of bearing dustproof cover, the outer edge of described ring body be bent to form one can with the arc flange of described dustproof groove phase clamping, the inner edge portion of described ring body is fixed with a magnetic rubber back-up ring in the form of a ring, and described magnetic rubber back-up ring and described ring body coaxially arrange.Be designed with after arc flange the installation of convenient dust-proofing lid; Be designed with after magnetic rubber back-up ring, when iron filings reach the gap location between dust cover and bearing inner race, meeting be adsorbed by magnetic rubber back-up ring, thereby improves the anti-dust performance of this dust cover.

In above-mentioned a kind of bearing, described annular body adopts stainless steel to make.Annular body adopts stainless steel to make, and mechanical strength is good, and stable chemical performance is not polluted by the chemicals such as oil can, guarantees the working stability of dust cover, and then guarantees the anti-dust performance of this dust cover.

Compared with prior art, the utlity model has following advantage:

1, the dust cover in the utility model is designed with magnetic sheet, in the time of near the iron filings in equipment enter dust cover, can be adsorbed in dust cover surface by the magnetic sheet on dust cover, thereby be difficult for arriving the gap location between dust cover and bearing inner race, and then avoid iron filings to enter bearing inside from this gap, improve the anti-dust performance of dust cover, guarantee the normal operation of bearing;

2, annular body forms two grooves by flanging, after flanging, can greatly improve the strength and stiffness of structure, thereby improve the bulk strength of dust cover, while avoiding dust cover riveting, produce distortion, and then avoid dust cover warpage to cause dust, iron filings easily to enter bearing inside, and improve the anti-dust performance of dust cover, guarantee the normal operation of bearing;

3, be designed with after arc flange the installation of convenient dust-proofing lid; Be designed with after magnetic rubber back-up ring, when iron filings reach the gap location between dust cover and bearing inner race, meeting be adsorbed by magnetic rubber back-up ring, thereby improves the anti-dust performance of this dust cover.

Accompanying drawing explanation

Fig. 1 is the structural representation of this bearing dustproof cover in embodiment.

In figure, 1, bearing inner race; 2, bearing outer ring; 3, ball; 4, retainer; 5, dustproof groove; 6, annular body; 7, magnetic sheet; 8, groove; 9, arc flange; 10, magnetic rubber back-up ring.

Embodiment

Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.

As shown in Figure 1, this bearing comprises bearing inner race 1 and the bearing outer ring 2 of coaxial setting, between bearing inner race 1 and bearing outer ring 2, be provided with several balls 3, between bearing inner race 1 and bearing outer ring 2, be also provided with the retainer 4 for keeping ball 3 positions, on the inner headed face of bearing outer ring 2, offer dustproof groove 5, dust cover comprises an annular body 6, the outer edge of annular body 6 is connected in dustproof groove 5, specifically, the outer edge of ring body be bent to form one can with the arc flange 9 of dustproof groove 5 phase clampings.

As shown in Figure 1, the inner edge portion of annular body 6 is extended towards the direction of bearing inner race 1, has magnetic sheet 7 on the outer side wall of annular body 6.The middle part of annular body 6 forms two grooves 8 by flanging.The cross section of two grooves 8 is all rectangle.The inner edge portion of ring body is fixed with a magnetic rubber back-up ring 10 in the form of a ring, and magnetic rubber back-up ring 10 coaxially arranges with ring body.Annular body 6 adopts stainless steel to make.

Working principle of the present utility model is as follows: the dust cover in the utility model is designed with magnetic sheet, in the time of near the iron filings in equipment enter dust cover, can be adsorbed in dust cover surface by the magnetic sheet on dust cover, thereby be difficult for arriving the gap location between dust cover and bearing inner race, and then avoid iron filings to enter bearing inside from this gap, improve the anti-dust performance of dust cover, guarantee the normal operation of bearing.Annular body forms two grooves by flanging, after flanging, can greatly improve the strength and stiffness of structure, thereby improve the bulk strength of dust cover, while avoiding dust cover riveting, produce distortion, and then avoid dust cover warpage to cause dust, iron filings easily to enter bearing inside, and improve the anti-dust performance of dust cover, guarantee the normal operation of bearing.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims

1. a bearing dustproof cover, described bearing comprises bearing inner race (1) and the bearing outer ring (2) of coaxial setting, between described bearing inner race (1) and bearing outer ring (2), be provided with several balls (3), between described bearing inner race (1) and bearing outer ring (2), be also provided with the retainer (4) for keeping ball (3) position, on the inner headed face of described bearing outer ring (2), offer dustproof groove (5), it is characterized in that, described dust cover comprises an annular body (6), the outer edge of described annular body (6) is connected in described dustproof groove (5), the inner edge portion of described annular body (6) is extended towards the direction of described bearing inner race (1), on the outer side wall of described annular body (6), there is magnetic sheet (7).

2. bearing dustproof cover according to claim 1, is characterized in that, the middle part of described annular body (6) forms two grooves (8) by flanging.

3. bearing dustproof cover according to claim 2, is characterized in that, the cross section of described two grooves (8) is all rectangle.

4. according to the bearing dustproof cover described in claim 1 or 2 or 3, it is characterized in that, the outer edge of described ring body be bent to form one can with the arc flange (9) of described dustproof groove (5) phase clamping, the inner edge portion of described ring body is fixed with a magnetic rubber back-up ring (10) in the form of a ring, and described magnetic rubber back-up ring (10) coaxially arranges with described ring body.

5. according to the bearing dustproof cover described in claim 1 or 2 or 3, it is characterized in that, described annular body (6) adopts stainless steel to make.