Heat dissipation structure of hub bearing unit

Abstract

The utility model discloses a heat dissipation structure of a hub bearing unit, which mainly solves the problem of insufficient heat dissipation of a hub bearing in the prior art, and comprises a hub flange piece, a mounting flange piece and bearing pieces, each bearing piece consists of a bearing outer ring, a bearing inner ring and a roller assembly, and two groups of bearing pieces are arranged in a bearing chamber of the mounting flange piece. A heat dissipation space is formed in the middle of the hub flange part, a plurality of sets of heat dissipation holes A are formed in the middle of the hub flange part and communicated with the heat dissipation space, heat dissipation fins are fixedly connected to the shaft sleeve part, heat dissipation holes B are obliquely formed in a hub installation disc of the hub flange part, air flow can be guided to flow to the heat dissipation fins when a vehicle runs, and the air flowing efficiency is improved. According to the design, heat accumulation is effectively reduced by optimizing a heat dissipation channel and air flow guiding, and the heat dissipation performance of the hub bearing unit is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub bearing unit technical field, and specifically is a kind of heat dissipation structure of wheel hub bearing unit. BACKGROUND

[0002] Wheel hub bearing unit as the key component of automobile chassis system, its performance directly influences the driving safety and reliability of vehicle. Conventional wheel hub bearing unit under high speed operation or heavy load working condition, due to friction heat and external heat conduction can cause bearing temperature sharply increases, if heat can not be promptly dissipated, will trigger lubricating grease deterioration, bearing play changes even element thermal deformation, eventually lead to bearing early failure, and the wheel hub bearing unit in the prior art, usually using natural air cooling structure, poor heat dissipation effect, of course, the wheel hub bearing unit in the prior art also by adding heat dissipation hole to improve heat dissipation effect, but its heat dissipation hole layout is single, airflow organization is disorderly, cannot form effective convection path, cause heat to accumulate in bearing chamber, heat dissipation effect is relatively poor. SUMMARY

[0003] In view of the above deficiencies existing in the prior art, the utility model aims at providing a kind of wheel hub bearing unit with excellent heat dissipation effect.

[0004] The utility model discloses the technical scheme adopted for realizing the above-mentioned purpose is: a kind of heat dissipation structure of wheel hub bearing unit, including wheel hub flange piece, installation flange piece and bearing piece, the bearing piece includes bearing outer ring, bearing inner ring and roller assembly, the bearing outer ring with the bearing inner ring between being equipped with the roller assembly, the installation flange piece is equipped with bearing chamber, the bearing chamber is close to its two ends and is equipped with the bearing piece, the bearing outer ring of the bearing piece is fixedly connected with the bearing chamber inner wall, and the bearing piece between two groups is heat dissipation space, the installation flange piece is equipped with multiple groups of heat dissipation holes A with the heat dissipation space intercommunication, the installation flange piece is fixedly connected with multiple groups of heat dissipation fins near the heat dissipation hole A;

[0005] The wheel hub flange piece includes wheel hub mounting disc and wheel shaft sleeve fixedly connected on the wheel hub mounting disc, the wheel shaft sleeve penetrates the bearing chamber, and the wheel shaft is fixedly connected with the bearing inner ring, and the wheel hub mounting disc is equipped with multiple groups of heat dissipation holes B, the heat dissipation hole B is arranged in inclined structure, and the heat dissipation hole B corresponds the heat dissipation fin.

[0006] In the above technical scheme, the installation flange piece includes installation flange part and the sleeve part of the integral structure with the installation flange part, the sleeve part is equipped with the bearing chamber, and the installation flange is equipped with multiple groups of heat dissipation holes C.

[0007] In the above technical scheme, the heat dissipation fin is equipped with multiple groups of heat dissipation holes D.

[0008] In the technical scheme, the high point of the heat dissipation hole B is away from the heat dissipation fin.

[0009] In the technical scheme, a group of the heat dissipation hole A is arranged between every two groups of the heat dissipation fins, and the heat dissipation hole A includes a plurality of groups of holes arranged in a column.

[0010] In the technical scheme, the bearing part further comprises a bearing sealing ring, two groups of the bearing sealing ring are arranged between the bearing outer ring and the bearing inner ring, and the bearing sealing ring is located on both sides of the roller assembly.

[0011] The present application has the following beneficial effects:

[0012] 1. In the bearing chamber with the mounting flange, a heat dissipation space is arranged between the two groups of bearing parts, a heat dissipation hole A is arranged in communication with the heat dissipation space, and a heat dissipation fin is arranged in cooperation, so that the heat accumulation is reduced, the heat dissipation is accelerated, and the heat dissipation effect is improved.

[0013] 2. The inclined heat dissipation hole B is arranged on the hub mounting disc, when the hub mounting disc rotates during the driving of the automobile, the air flow is realized, the air flow is guided to the heat dissipation fin, the air flow efficiency is improved, and the heat dissipation effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the present application;

[0015] Fig. 2 It is another angle of the structural schematic view of the present application;

[0016] Fig. 3 It is a sectional view of the structural schematic view of the present application.

[0017] In the drawing: 101 bearing outer ring, 102 bearing inner ring, 103 roller assembly, 104 bearing sealing ring, 201 mounting flange part, 202 shaft sleeve part, 203 heat dissipation space, 204 heat dissipation hole A, 205 heat dissipation fin, 206 heat dissipation hole D, 207 heat dissipation hole C, 301 hub mounting disc, 302 wheel shaft sleeve, 303 heat dissipation hole B. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application.

[0019] Please refer to Figs. 1-3 A heat dissipation structure of a hub bearing unit, comprising a hub flange part, a mounting flange part and a bearing part, wherein the bearing part comprises a bearing outer ring 101, a bearing inner ring 102 and a roller assembly 103, and the roller assembly 103 is arranged between the bearing outer ring 101 and the bearing inner ring 102.

[0020] The mounting flange comprises a mounting flange part 201 and a shaft sleeve part 202 in an integral structure with the mounting flange part 201, and the shaft sleeve part 202 is provided with a bearing chamber;

[0021] The hub flange comprises a hub mounting disc 301 and a wheel shaft sleeve 302 fixedly connected to the hub mounting disc 301.

[0022] The bearing chamber is provided with a bearing part near both ends thereof, and the bearing outer ring 101 of the bearing part is fixedly connected to the inner wall of the bearing chamber by interference fit, and the space between the two groups of bearing parts in the bearing chamber is a heat dissipation space 203. In addition, a plurality of groups of heat dissipation holes A 204 are provided on the mounting flange in communication with the heat dissipation space 203, and a plurality of groups of heat dissipation fins 205 are fixedly connected to the mounting flange near the heat dissipation holes A 204. In this way, the heat accumulation can be reduced, the heat dissipation can be accelerated, and the heat dissipation effect can be improved. Specifically, a group of heat dissipation holes A 204 can be arranged between every two groups of heat dissipation fins 205, and a group of heat dissipation holes A 204 comprises a plurality of groups of holes arranged in a row, so as to balance the heat dissipation pressure. Further, a plurality of groups of heat dissipation holes D 206 are provided on the heat dissipation fins 205, which further increase the air flow exchange of the fins and improve the passive heat dissipation effect.

[0023] Further, a plurality of groups of heat dissipation holes C 207 are provided on the mounting flange, which can increase the heat dissipation area of the mounting flange and realize the air flow between the mounting flange and the hub mounting disc 301, thereby accelerating the heat dissipation.

[0024] Optimally, the bearing part further comprises a bearing sealing ring 104, and two groups of bearing sealing rings 104 are arranged between the bearing outer ring 101 and the bearing inner ring 102. The bearing sealing ring 104 is located on both sides of the roller assembly 103, which can effectively isolate external pollutants (such as dust and water) and prolong the service life of the bearing.

[0025] Further, the wheel shaft sleeve 302 penetrates the bearing chamber, and the wheel shaft is fixedly connected to the bearing inner ring 102 by interference fit. A plurality of groups of heat dissipation holes B 303 are provided on the hub mounting disc 301, and the heat dissipation holes B 303 are arranged in an inclined structure. The high point of the heat dissipation holes B 303 is away from the heat dissipation fins 205, and the low point of the heat dissipation holes B 303 corresponds to the heat dissipation fins 205. In this way, when the hub mounting disc 301 rotates during the driving of the automobile, the air flow can be realized, the air flow is guided to the heat dissipation fins 205, the air flow efficiency is enhanced, and the heat dissipation effect is improved.

[0026] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0027] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A heat dissipation structure for a hub bearing unit, comprising a hub flange, a mounting flange, and a bearing assembly, wherein the bearing assembly includes an outer bearing ring (101), an inner bearing ring (102), and a roller assembly (103), the roller assembly (103) being disposed between the outer bearing ring (101) and the inner bearing ring (102), characterized in that: The mounting flange is provided with a bearing chamber, and the bearing chamber is provided with the bearing components near both ends. The outer ring (101) of the bearing component is fixedly connected to the inner wall of the bearing chamber. There is a heat dissipation space (203) between the two sets of bearing components. The mounting flange is provided with multiple sets of heat dissipation holes A (204) communicating with the heat dissipation space (203). Multiple sets of heat dissipation fins (205) are fixedly connected to the mounting flange near the heat dissipation holes A (204). The hub flange includes a hub mounting plate (301) and a wheel axle sleeve (302) fixedly connected to the hub mounting plate (301). The wheel axle sleeve (302) passes through the bearing chamber, and the wheel axle is fixedly connected to the inner ring (102) of the bearing. The hub mounting plate (301) is provided with multiple sets of heat dissipation holes B (303). The heat dissipation holes B (303) are arranged in an inclined structure and correspond to the heat dissipation fins (205).

2. The heat dissipation structure of a hub bearing unit according to claim 1, characterized in that: The mounting flange includes a mounting flange portion (201) and a bushing portion (202) integrally formed with the mounting flange portion (201). The bushing portion (202) contains the bearing chamber, and the mounting flange has multiple sets of heat dissipation holes C (207).

3. The heat dissipation structure of a hub bearing unit according to claim 1, characterized in that: The heat dissipation fins (205) are provided with multiple sets of heat dissipation holes D (206).

4. The heat dissipation structure of a hub bearing unit according to claim 1, characterized in that: The highest point of the heat dissipation hole B (303) is far away from the heat dissipation fin (205).

5. The heat dissipation structure of a hub bearing unit according to claim 1, characterized in that: A set of heat dissipation holes A (204) is provided between every two sets of heat dissipation fins (205), and a set of heat dissipation holes A (204) includes multiple sets of holes arranged in a row.

6. The heat dissipation structure of a hub bearing unit according to claim 1, characterized in that: The bearing component also includes bearing sealing rings (104). Two sets of bearing sealing rings (104) are provided between the outer ring (101) and the inner ring (102) of the bearing. The bearing sealing rings (104) are located on both sides of the roller assembly (103).

Images