CN214837892U

CN214837892U - Dustproof precise miniature bearing with good sealing performance

Info

Publication number: CN214837892U
Application number: CN202121553540.4U
Authority: CN
Inventors: 华黎明; 王凯贤; 陈群; 王迅
Original assignee: Anhui Rzn Bearing Co ltd
Current assignee: Anhui Rzn Bearing Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-11-23
Anticipated expiration: 2031-07-08

Abstract

The utility model discloses a dustproof precise miniature bearing with good sealing performance, which relates to the technical field of bearings and comprises a bearing outer ring, a bearing inner ring, a rolling body and a bearing retainer, wherein the bearing retainer is arranged in a cavity formed between the inner wall of the bearing outer ring and the outer wall of the bearing inner ring, the outer wall of the bearing inner ring is sleeved with a sealing gasket, and the outer wall of the sealing gasket is provided with an elastic band, the bearing inner ring is connected with the output end of the device, the elastic band is driven to rotate while the sealing gasket rotates, so that air flow is formed, external dust is not easy to enter the cavity formed by the bearing outer ring and the bearing inner ring, the normal operation of the rolling body is avoided being influenced, the service life of the bearing is prolonged, the safety factor of the use of the bearing is improved, and the problem that the bearing provided in the prior art works in severe environment is solved, the motion of the internal roller is easily affected by external dust, resulting in the problems of short service life and low safety factor.

Description

Dustproof precise miniature bearing with good sealing performance

Technical Field

The utility model relates to the technical field of bearings, specifically be a dustproof accurate miniature bearing that leakproofness is good

Background

The bearing is an important mechanical part, its main effect is to reduce the coefficient of friction that machinery rotated the in-process, thereby the order makes machinery rotate more stable, current bearing is usually by the roller, the bearing inner race, bearing inner race and bearing bracket constitute, when working under adverse circumstances, can appear in external dust gets into the cavity that bearing inner race and bearing outer race formed, lead to the roller to appear hindering at the pivoted in-process, the piling up of long-time dust can influence the life of bearing and can reduce the factor of safety of motion bearing, consequently need the dustproof precision miniature bearing that a leakproofness is good, in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dustproof accurate miniature bearing that leakproofness is good to the bearing that proposes in solving above-mentioned background art is at adverse circumstances during operation, and inside roller motion receives external dust to influence easily, leads to the problem that life is short and factor of safety is low.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a dustproof accurate miniature bearing that leakproofness is good, including the bearing inner race, rolling element and bearing retainer, the bearing retainer is installed in the chamber that forms between bearing inner race inner wall and the bearing inner race outer wall, the rolling element sets up the top at the bearing retainer, bearing inner race outer wall cup joints seal ring, seal ring's outer wall is provided with the elastic webbing, when the bearing inner race rotates, seal ring drives the elastic webbing and takes place to rotate, thereby form the air current disturbance, fan out the dust fan-out, avoid the dust and the problem that the rolling element contact leads to life to reduce.

Preferably, the elastic band is arranged into a circular arc-shaped structure, the upper surface of the elastic band is inclined, the inclination angle is 5-10 degrees, the contact area with the outside is increased, and therefore the air flow disturbance effect is further improved.

Preferably, the elastic belts are distributed in an annular array by taking the rotation center of the bearing inner ring as the circle center, and the cleaning of dust is further improved by increasing the elastic belts, so that the dustproof and sealing effects are further improved.

Preferably, be provided with flexible net between two adjacent elastic bands, flexible net sets up to fan-shaped structure and is located the rolling element directly over, and flexible net shelters from the dust to further promote sealing performance.

Preferably, the end of the elastic band far away from the sealing washer is attached to the inner wall of the bearing outer ring, so that the elastic band is prevented from rotating to influence the movement of the bearing outer ring.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses, be connected with the output of device through the bearing inner race, seal ring takes place to drive the elastic band when the pivoted and takes place to rotate, thereby form an air flow, make in the difficult cavity that gets into bearing inner race and form of external dust, thereby avoid influencing the normal operation of rolling element, the life of bearing has been prolonged and the factor of safety that the bearing used has been promoted, thereby solve the bearing that proposes among the prior art at adverse circumstances during operation, inside roller motion is influenced by external dust easily, lead to the problem that life is short and factor of safety is low.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

fig. 2 is a bottom view of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a schematic structural view of the connecting band of the present invention.

In the figure: 1. a bearing outer race; 2. a bearing inner race; 3. a bearing retainer; 4. a rolling body; 5. a sealing gasket; 6. an elastic band; 7. a flexible web.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 and fig. 3-4, the present embodiment provides a dustproof precision micro bearing with good sealing performance, which includes a bearing outer ring 1, a bearing inner ring 2, a rolling element 4 and a bearing retainer 3, wherein the bearing retainer 3 is installed in a cavity formed between an inner wall of the bearing outer ring 1 and an outer wall of the bearing inner ring 2, the rolling element 4 is disposed above the bearing retainer 3, and the bearing outer ring 1 and the bearing inner ring 2 can rotate relative to each other through cooperation of the bearing retainer 3 and the rolling element 4.

Seal ring 5 has been cup jointed to 2 outer walls of bearing inner race, seal ring 5 has certain sealing performance, seal ring 5's outer wall is provided with elastic webbing 6, cooperation through seal ring 5 and elastic webbing 6 is used, when bearing inner race 2 takes place to rotate, elastic webbing 6 takes place to rotate, disturb the air, make external dust can be blown away under the effect of the wind-force, can not get into the cavity that bearing inner race 2 and bearing inner race 1 formed, thereby need not worry that the dust can influence the rotation of rolling element 4.

In order to further increase the disturbance effect of the elastic band 6 on the gas and further improve the blowing effect on dust, the elastic band 6 is arranged into a circular arc structure, the upper surface of the elastic band is inclined, the contact area between the elastic band 6 and the outside is increased by the inclination angle of 5-10 degrees, the disturbance rate of the gas is increased, and the disturbance effect on the gas is increased.

In order to further improve the dust blowing effect, the elastic belts 6 are distributed in an annular array by taking the rotation center of the bearing inner ring 2 as the center of circle, 4-6 elastic belts 6 are arranged, and the dust blowing effect is improved and the protection effect on the rolling body 4 is further improved by increasing the number of the elastic belts 6.

Example 2

Referring to fig. 1-3, a further improvement over example 1 is provided: in order to better protect the rolling body 4, a flexible net 7 is arranged between two adjacent elastic belts 6, the flexible net 7 is of a fan-shaped structure and is located right above the rolling body 4, and the rolling body 4 is completely covered by the flexible net 7, so that the dustproof effect on the rolling body 4 is further improved.

In a further embodiment, since the elastic band 6 and the flexible net 7 are both made of elastic materials, a certain deformation occurs during the rotation process, so that the hole gap on the flexible net 7 becomes smaller under the influence of the deformation, further blocking the entry of tiny dust, and further improving the dustproof effect on the rolling body 4.

One end of the elastic band 6, which is far away from the sealing washer 5, is attached to the inner wall of the bearing outer ring 1, so that the rotation of the elastic band 6 is prevented from influencing the operation of the bearing outer ring 1, and the protection effect on the rolling body 4 is better.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a dustproof accurate miniature bearing that leakproofness is good, includes bearing inner race (1), bearing inner race (2), rolling element (4) and bearing retainer (3), its characterized in that: the bearing retainer (3) is installed in a cavity formed between the inner wall of the bearing outer ring (1) and the outer wall of the bearing inner ring (2), the rolling body (4) is arranged above the bearing retainer (3), the outer wall of the bearing inner ring (2) is sleeved with a sealing washer (5), and the outer wall of the sealing washer (5) is provided with an elastic band (6).

2. The dustproof precision micro bearing with good sealing performance as claimed in claim 1, wherein: the elastic band (6) is arranged into a circular arc structure, the upper surface of the elastic band is inclined, and the inclination angle is 5-10 degrees.

3. The dustproof precision micro bearing with good sealing performance as claimed in claim 1, wherein: the elastic bands (6) are distributed in an annular array by taking the rotation center of the bearing inner ring (2) as the center of a circle.

4. The dustproof precision micro bearing with good sealing performance as claimed in claim 1, wherein: a flexible net (7) is arranged between the two adjacent elastic belts (6), and the flexible net (7) is of a fan-shaped structure and is positioned right above the rolling bodies (4).

5. The dustproof precision micro bearing with good sealing performance as claimed in claim 1, wherein: and one end of the elastic band (6) far away from the sealing washer (5) is attached to the inner wall of the bearing outer ring (1).