CN210889727U

CN210889727U - Sealed bearing

Info

Publication number: CN210889727U
Application number: CN201922004864.1U
Authority: CN
Inventors: 寮鸿讲; 强轲
Original assignee: Jiangsu Chunfeng Bearing Co ltd
Current assignee: Jiangsu Chunfeng Bearing Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-06-30
Anticipated expiration: 2029-11-19

Abstract

The utility model relates to a bearing field discloses a sealed bearing, including bearing inner race, first sealed lid and the sealed lid of second, the bearing inner race cover is established outside the bearing inner race, the bearing inner race with be equipped with the holder between the bearing inner race, evenly arrange a plurality of rolling elements on the holder, first sealed lid outside portion with the interior limit portion of the sealed lid of second has the overlap region the first sealed lid of overlap region department with the clearance has between the sealed lid of second, the overlap region corresponds first sealed side face with the sealed side face of second is equipped with annular groove respectively, the ball is evenly arranged in the annular groove. The problem of solve is that among the prior art, bearing sealing performance is relatively poor, and the noise is great. The utility model discloses it is all more convenient to have dustproof effectual, the noise that produces is little and the installation with the dismantlement, is convenient for change the beneficial effect of shield, ball.

Description

Sealed bearing

Technical Field

The utility model relates to a bearing technical field, concretely relates to sealed bearing.

Background

The bearing is an important part in modern industry, and mainly includes inner circle, outer lane, holder and rolling element, in order to prevent that dust from getting into the bearing inside, influencing the performance of bearing, at present many bearings all set up the shield. In the bearing work, the inner ring and the outer ring need to rotate relatively, the sealing performance of the bearing in the prior art is poor, and the noise generated in the rotation is large due to the direct abutting connection.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of background art, the utility model provides a sealed bearing, the problem of solution is among the prior art, and bearing sealing performance is relatively poor, and the noise is great.

For solving the technical problem, the utility model provides a following technical scheme:

the sealed bearing comprises a bearing inner ring, a bearing outer ring, a first sealing cover and a second sealing cover, wherein the bearing outer ring is sleeved outside the bearing inner ring, a retainer is arranged between the bearing inner ring and the bearing outer ring, a plurality of rolling elements are uniformly arranged on the retainer, the number of the first sealing covers is 2, 2 first sealing covers are symmetrically arranged on two sides of the bearing inner ring, each first sealing cover is of an annular structure, the outer peripheral surface of the bearing inner ring is provided with a section of external thread, the inner periphery of each first sealing cover is provided with matched internal threads, so that the inner periphery of each first sealing cover is in threaded connection with the outer periphery of the bearing inner ring, the number of the second sealing covers is 2, 2 second sealing covers are symmetrically arranged on two sides of the bearing inner ring, each second sealing cover is of an annular structure, the inner periphery of the bearing outer ring is provided with a section of, the outer periphery of the second sealing cover is in threaded connection with the inner periphery of the outer ring of the bearing, the outer edge portion of the first sealing cover and the inner edge portion of the second sealing cover are provided with overlapping areas, gaps are reserved between the first sealing cover and the second sealing cover at the overlapping areas, the overlapping areas correspond to the side face of the first sealing cover and the side face of the second sealing cover are respectively provided with annular grooves, balls are evenly arranged in the annular grooves, and the balls are in rolling connection with the two sides of the annular grooves.

Through the technical scheme, the method realizes that: when the bearing inner ring rotates relative to the bearing outer ring, the first sealing cover and the second sealing cover are always shielded mutually due to the existence of the overlapping area, so that the dustproof effect is good; the first sealing cover and the second sealing cover have no sliding friction, rolling friction is realized by utilizing the balls, the friction force is small, and the generated noise is small.

Preferably, a step surface is arranged on the side surface of the first sealing cover in the overlapping area, and the dustproof performance is further improved by the step surface.

Preferably, a step surface is also arranged on the side surface of the second sealing cover in the overlapping area, and the dustproof performance is improved in the same way.

Preferably, the inner periphery of the first sealing cover is integrally connected with an internal thread cylinder, the length of the internal thread cylinder is 12-20 mm, the first sealing cover can be conveniently and directly rotated by hands to adjust the first sealing cover to advance and retreat along the axial direction, and then the size of a gap between the first sealing cover and the second sealing cover can be adjusted.

Preferably, the periphery of the second sealing cover is integrally connected with an external thread cylinder, the length of the external thread cylinder is 12-20 mm, and the second sealing cover can be conveniently adjusted to advance and retreat along the axial direction.

Compared with the prior art, the utility model following beneficial effect has at least:

1) the first sealing cover and the second sealing cover are always shielded by utilizing the overlapping area of the first sealing cover and the second sealing cover, so that the dustproof effect is good;

2) the first sealing cover and the second sealing cover are not in contact connection, sliding friction is changed into rolling friction, and the generated noise is low;

3) the first sealing cover and the second sealing cover are in threaded connection with the bearing inner ring and the bearing outer ring respectively, the installation and the disassembly are both convenient, the dustproof cover and the ball are convenient to replace, the axial distance between the first sealing cover and the second sealing cover is convenient to adjust, the ball between the first sealing cover and the second sealing cover is moderate in stress, smooth in rolling and small in noise.

Drawings

The utility model discloses there is following figure:

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is a schematic view of the first sealing cover of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1-3, the sealed bearing includes a bearing inner ring 1, a bearing outer ring 2, a first sealing cover 3 and a second sealing cover 4, the bearing outer ring 2 is sleeved outside the bearing inner ring 1, a retainer 5 is arranged between the bearing inner ring 1 and the bearing outer ring 2, a plurality of rolling elements 6 are uniformly arranged on the retainer 5, the number of the first sealing cover 3 is 2, 2 first sealing covers 3 are symmetrically arranged at two sides of the bearing inner ring 1, the first sealing cover 3 is in an annular structure, the inner circumference of the first sealing cover 3 is in threaded connection with the outer circumference of the bearing inner ring 1, the number of the second sealing cover 4 is 2, 2 second sealing covers 4 are symmetrically arranged at two sides of the bearing inner ring 1, the second sealing cover 4 is in an annular structure, the outer circumference of the second sealing cover 4 is in threaded connection with the inner circumference of the bearing outer ring 2, an overlapping region 7 is arranged between the outer circumference of the first sealing cover 3 and the inner circumference of the second sealing cover 4, the side surface of the first sealing cover 3 and the side surface of the second sealing cover 4 corresponding to the overlapping area 7 are respectively provided with an annular groove 9, balls 10 are uniformly arranged in the annular grooves 9, and the balls 10 are in rolling connection with the annular grooves 9 on two sides.

When the bearing inner ring 1 rotates relative to the bearing outer ring 2, the first sealing cover 3 and the second sealing cover 4 are always shielded by the overlapping area 7, so that the dustproof effect is good; the first sealing cover 3 and the second sealing cover 4 have no sliding friction, and the rolling friction is realized by the ball 10, so the friction force is small, and the generated noise is small.

The side surface of the first seal cover 3 is provided with a step surface 11 in the overlapping area 7, and the side surface of the second seal cover 4 is also provided with a step surface 11 in the overlapping area 7, so that the step surface 11 is utilized to improve the dustproof performance.

The inner periphery of the first sealing cover 3 is integrally connected with the inner thread cylinder 12, the length of the inner thread cylinder 12 is 12-20 mm, the outer periphery of the second sealing cover 4 is integrally connected with the outer thread cylinder 13, the length of the outer thread cylinder 13 is 12-20 mm, and the second sealing cover 4 can be conveniently adjusted to advance and retreat along the axial direction.

In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. Sealed bearing, its characterized in that: the bearing inner ring sealing structure comprises a bearing inner ring (1), a bearing outer ring (2), a first sealing cover (3) and a second sealing cover (4), wherein the bearing outer ring (2) is sleeved outside the bearing inner ring (1), a retainer (5) is arranged between the bearing inner ring (1) and the bearing outer ring (2), a plurality of rolling elements (6) are uniformly arranged on the retainer (5), the number of the first sealing covers (3) is 2, 2 first sealing covers (3) are symmetrically arranged on two sides of the bearing inner ring (1), the first sealing covers (3) are of an annular structure, the inner circumference of each first sealing cover (3) is in threaded connection with the outer circumference of the bearing inner ring (1), the number of the second sealing covers (4) is 2, 2 second sealing covers (4) are symmetrically arranged on two sides of the bearing inner ring (1), and the second sealing covers (4) are of an annular structure, the utility model discloses a ball bearing, including bearing inner race (2), the sealed lid of second (4) periphery threaded connection in the interior week of bearing inner race (2), first sealed lid (3) outside portion with the interior limit portion of the sealed lid of second (4) has overlap region (7) department first sealed lid (3) with clearance (8) have between the sealed lid of second (4), overlap region (7) correspond first sealed lid (3) side with the sealed lid of second (4) side is equipped with annular groove (9) respectively, evenly arrange ball (10) in annular groove (9), ball (10) roll connection both sides annular groove (9).

2. The sealed bearing of claim 1, wherein: a step surface (11) is arranged on the side surface of the first sealing cover (3) in the overlapping area (7).

3. The sealed bearing of claim 2, wherein: the side of the second sealing cover (4) is also provided with a step surface (11) in the overlapping area (7).

4. The sealed bearing of claim 3, wherein: the inner periphery of the first sealing cover (3) is integrally connected with an internal thread cylinder (12), and the length of the internal thread cylinder (12) is 12-20 mm.

5. The sealed bearing of claim 4, wherein: the periphery of the second sealing cover (4) is integrally connected with an external thread cylinder body (13), and the length of the external thread cylinder body (13) is 12-20 mm.