CN212155453U

CN212155453U - Bearing for automobile steering knuckle

Info

Publication number: CN212155453U
Application number: CN202020424128.1U
Authority: CN
Inventors: 陈候锋
Original assignee: Yuhuan Chuangyu Machinery Co ltd
Current assignee: Yuhuan Chuangyu Machinery Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-12-15
Anticipated expiration: 2030-03-27

Abstract

The utility model provides a bearing for auto steering knuckle belongs to auto-parts technical field. It has solved the not good problem of bearing leakproofness in the current knuckle. This a bearing for auto steering knuckle includes knuckle main part and bearing main part, and the bearing main part comprises bearing inner race, steel ball, holder and sealing washer, and the both ends of bearing inner race are provided with the outside extension portion that extends of axial respectively, and the both ends of bearing main part all are provided with the cover and locate on the extension portion and with the sealed lid that the bearing inner race links firmly mutually, the sealing washer comprises by rigidity skeleton and attached to the rubber seal spare on the rigidity skeleton, the external diameter end and the internal diameter end of rubber seal spare are provided with external seal lip and the internal seal lip that links firmly mutually with rubber seal spare respectively. The utility model has the advantage of good sealing performance.

Description

Bearing for automobile steering knuckle

Technical Field

The utility model belongs to the technical field of auto-parts, a bearing for auto steering knuckle is related to.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The bearings can be classified into rolling bearings and sliding bearings according to the frictional properties of the moving elements. Rolling bearings have been standardized and serialized, but have a larger radial size, vibration and noise, and a higher price than sliding bearings. The rolling bearing generally comprises an outer ring, an inner ring, a rolling body and a retainer. Rolling bearings are classified into ball bearings and roller bearings according to the shape of the rolling elements. The automobile steering knuckle bearing failure old parts in the market are high, 95% of maintenance stations dismantle the bearing and are that the external structure is intact, but the inside mud dust that gets into makes the bearing rotate inflexibly, and the main reason is because road conditions environment is poor, the bearing lacks sealing technique, and dust mud impurity infiltration leads to the bearing to produce fault modes such as abnormal sound, abnormal wear, coefficient of friction increase bearing return are not good.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a leakproofness well and effectively keep life's bearing.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a bearing for automobile steering knuckle, includes knuckle main part and bearing main part, bearing main part constitute by bearing inner race, steel ball, holder and sealing washer, its characterized in that, the both ends of bearing inner race be provided with the outside extension portion that extends of axial respectively, bearing main part's both ends all are provided with the cover and locate on the extension portion and with the sealed lid that the bearing inner race links firmly mutually, the sealing washer constitute by including by rigidity skeleton and attached to the rubber seal spare on the rigidity skeleton, rubber seal spare's external diameter end and internal diameter end be provided with external seal lip and the internal seal lip that links firmly mutually with rubber seal spare respectively.

In the above bearing for the steering knuckle of the automobile, the outer peripheral wall of the extension portion is provided with a projection portion which projects radially outward and against which the seal cover is mounted.

In the above bearing for the steering knuckle of the automobile, a row of balls arranged along the circumferential direction of the protruding portion is arranged between the outer end face of the protruding portion and the inner end face of the corresponding sealing cover, and a sealing ring for enhancing the sealing property is arranged between the outer circumferential wall of the protruding portion and the inner circumferential wall of the corresponding sealing cover.

In the bearing for the automobile steering knuckle, the sealing cover is fixedly connected with the bearing outer ring through a plurality of studs, and a sealing ring for enhancing the sealing property is also arranged between the inner end surface of the sealing cover and the outer end surface of the corresponding bearing outer ring.

In the bearing for the automobile steering knuckle, the inner sealing lip is composed of a first sealing lip, a second sealing lip and a dust-proof lip, wherein the first sealing lip and the second sealing lip are obliquely arranged, and the dust-proof lip is obliquely arranged.

Compared with the prior art, the bearing for the automobile steering knuckle has the following advantages:

1. the both ends of bearing inner race are provided with the outside extension portion that extends of axial respectively, and the both ends of bearing main part all are provided with the cover and locate on the extension portion and with the sealed lid that the bearing inner race links firmly mutually, the sealing washer comprises by rigidity skeleton and the rubber seal spare of adhering to on the rigidity skeleton, the external diameter end and the internal diameter end of rubber seal spare are provided with external seal lip and the interior seal lip that links firmly mutually with rubber seal spare respectively, the setting of above-mentioned structure, double seal structure's setting, the leakproofness of increase bearing, reduce the erosion of other impurity in the operation process, improve the life of knuckle simultaneously.

Drawings

Fig. 1 is a schematic perspective view of a bearing body and a knuckle body of the bearing for the automobile knuckle, the bearing body and the knuckle body being disassembled.

Fig. 2 is a schematic sectional view of a bearing body in the bearing for the knuckle of the automobile.

In the drawings, 1, a knuckle body; 2. a bearing body; 3. a bearing inner race; 4. a bearing outer race; 5. steel balls; 6. a holder; 7. a seal ring; 8. an extension part; 9. a sealing cover; 10. a rigid skeleton; 11. a rubber seal; 12. an outer sealing lip; 13. an inner sealing lip; 14. a boss portion; 15. a ball bearing; 16. a seal ring; 17. a stud; 18. a first sealing lip; 19. a second sealing lip; 20. and (4) dust lip prevention.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the bearing for the automobile steering knuckle comprises a steering knuckle main body 1 coated with an anti-rust coating and a bearing main body 2, wherein the bearing main body 2 is composed of a bearing inner ring 3, a bearing outer ring 4, steel balls 5, a retainer 6 and a seal ring 7, two ends of the bearing inner ring 3 are respectively provided with an extension part 8 extending outwards in the axial direction, two end parts of the bearing main body 2 are respectively provided with a seal cover 9 sleeved on the extension part 8 and fixedly connected with the bearing outer ring 4, the seal ring 7 is composed of a rigid framework 10 and a rubber seal part 11 attached on the rigid framework 10, an outer diameter end and an inner diameter end of the rubber seal part 11 are respectively provided with an outer seal lip 12 and an inner seal lip 13 fixedly connected with the rubber seal part 11, an inner circular wall surface of the bearing outer ring 4 is provided with a first seal groove matched with the outer seal lip 12, an outer circular wall of the bearing inner ring 3 is provided with a, the inner sealing lip 13 is composed of a first sealing lip 18, a second sealing lip 19 and a dust-proof lip 20, wherein the first sealing lip 18, the second sealing lip 19 and the dust-proof lip 20 are obliquely arranged and matched with the sealing groove, the outer circumferential wall of the dust-proof lip 20 is attached to the inner circumferential wall, located on the outer side of the second sealing groove, of the corresponding bearing inner ring 3, the second sealing lip 19 is arranged on the inner side of the rubber sealing element 11 and located on the inner side of the first sealing lip 18, a gap is reserved between the second sealing lip 19 and the outer circumferential wall of the corresponding bearing inner ring 3, and the inner.

In a further elaboration, in order to prevent the sealing cover 9 from inclining during operation, a protruding portion 14 which protrudes radially outward and is used for the sealing cover 9 to abut against the installation is arranged on the outer peripheral wall of the extending portion 8, and a notch which is convenient for being installed in cooperation with the protruding portion 14 is formed in the sealing cover 9.

To put it more concretely, in order to facilitate the rotation of the inner ring 3 of the bearing and to maintain the sealing performance during the rotation, a row of balls 15 arranged along the circumferential direction of the protruding portion 14 is arranged between the outer end face of the protruding portion 14 and the inner end face of the corresponding sealing cover 9, the outer end face of the protruding portion 14 and the inner end face of the sealing cover 9 are both provided with slideways for the balls 15 to be mounted, the balls 15 are preferably embedded in the slideways at one position, and a sealing ring 16 for enhancing the sealing performance is arranged between the outer circumferential wall of the protruding portion 14 and the inner circumferential wall of the corresponding sealing cover 9.

In more detail, in order to maintain the sealing performance, the sealing cover 9 is fixedly connected with the bearing outer ring 4 through a plurality of studs 17, and a sealing ring 16 for enhancing the sealing performance is also arranged between the inner end surface of the sealing cover 9 and the outer end surface of the corresponding bearing outer ring 4.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A bearing for a steering knuckle of a motor vehicle comprises a knuckle body (1) and a bearing body (2), the bearing main body (2) consists of a bearing inner ring (3), a bearing outer ring (4), steel balls (5), a retainer (6) and a sealing ring (7), it is characterized in that both ends of the bearing inner ring (3) are respectively provided with an extension part (8) which axially extends outwards, two end parts of the bearing main body (2) are respectively provided with a sealing cover (9) which is sleeved on the extension part (8) and is fixedly connected with the bearing outer ring (4), the sealing ring (7) consists of a rigid framework (10) and a rubber sealing element (11) attached to the rigid framework (10), the outer diameter end and the inner diameter end of the rubber sealing element (11) are respectively provided with an outer sealing lip (12) and an inner sealing lip (13) which are fixedly connected with the rubber sealing element (11).

2. Bearing for a steering knuckle according to claim 1, wherein the outer peripheral wall of the extension (8) is provided with a projection (14) projecting radially outwards and against which the sealing cover (9) is mounted.

3. A bearing for a steering knuckle for an automobile according to claim 2, wherein a row of balls (15) are provided between the outer end surface of said boss (14) and the inner end surface of the corresponding seal cap (9) in the circumferential direction of the boss (14), and a seal ring (16) for enhancing the sealing property is provided between the outer circumferential wall of said boss (14) and the inner circumferential wall of the corresponding seal cap (9).

4. The bearing for the automobile steering knuckle according to claim 1, wherein the sealing cover (9) is fixedly connected with the bearing outer ring (4) through a plurality of studs (17), and a sealing ring (16) for enhancing sealing performance is arranged between the inner end surface of the sealing cover (9) and the outer end surface of the corresponding bearing outer ring (4).

5. Bearing for a steering knuckle according to claim 1, characterized in that said inner sealing lip (13) consists of a first obliquely arranged sealing lip (18), a second obliquely arranged sealing lip (19) and a dust lip (20).