Hub bearing unit with excellent braking performance

Abstract

A hub bearing unit having excellent braking performance. The problems that a brake disc of an existing hub bearing is insufficient in strength and poor in braking performance are mainly solved. The brake device is characterized by further comprising a disc-shaped brake disc (4), the brake disc is connected with the inner flange through a fastener, and the brake disc is arranged between the opposite faces of the inner flange and the outer flange. According to the hub bearing unit with the excellent braking performance, the strength of the hub bearing unit can be improved, the service life of the hub bearing unit can be prolonged, the transmission distance of braking force during braking can be shortened, and the stability and efficiency of braking can be improved; the space is effectively utilized, the product is light, and energy conservation and emission reduction are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of automotive parts, and particularly relates to a hub bearing unit with excellent braking performance. Background Art

[0002] When a traditional hub bearing unit is installed on a vehicle, the A surface of the inner flange is attached and connected to the brake disc surface, (as Figure 3 shown), this structure requires a mounting position for the brake disc to be reserved on the A surface of the inner flange, which will increase the space and weight of the product, and is not advisable from the perspective of product lightweight. When encountering products with a large wheel offset, it is necessary to increase the height of the brake disc to ensure the braking offset. The higher the height of the brake disc, the more complex the structure, and it will have a certain impact on its own strength and braking performance. Summary of the Utility Model

[0003] In order to overcome the deficiencies of the background art, the utility model provides a hub bearing unit with excellent braking performance, mainly solving the problems of insufficient strength and weak braking performance of the brake disc of the current hub bearing.

[0004] The technical solution of the utility model is as follows.

[0005] A hub bearing unit with excellent braking performance includes an inner flange and a journal. An outer flange is provided on the outer side of the journal, and a bearing connection mechanism is provided between the journal and the outer flange; it also includes a disc-shaped brake disc, the brake disc is connected to the inner flange through a fastener, and the brake disc is arranged between the opposite surfaces of the inner flange and the outer flange.

[0006] The brake disc is axially provided with a mounting groove, the mounting groove has a structure with unequal inner diameters, and it at least includes a first groove with a larger inner diameter and a second groove with a smaller inner diameter. The first groove is for the outer wall of the inner flange to pass through, and the inner wall of the second groove is arranged opposite to the circumferential outer wall of the journal.

[0007] The first groove and the second groove are communicated.

[0008] The bearing connection mechanism includes a cage provided between the outer flange and the journal. A number of rolling elements are provided on the cage, the rolling elements are in rolling cooperation with the inner wall of the outer flange, and the rolling elements are in rolling cooperation with the outer wall of the journal.

[0009] It also includes a sealing assembly, and the sealing assembly is arranged on the outer side of the rolling elements.

[0010] The sealing assembly includes a dust cover, the dust cover is installed on the outer flange, and has a baffle for at least partially blocking the empty groove between the axially outer wall of the outer flange and the opposite surface of the inner flange.

[0011] The dust cover further includes a support plate extending in the vertical direction, and a sealing lip is provided on the support plate and is in sealing fit with the outer wall of the inner flange.

[0012] The beneficial effects of the present utility model are as follows: The present utility model provides a hub bearing unit with excellent braking performance. By arranging the installation position and overall structure of the brake disc, its own strength can be enhanced, the service life can be prolonged, and the transmission distance of the braking force during braking can be shortened, which helps to improve the braking stability and efficiency; the space can be effectively utilized to make the product lightweight, which helps to save energy and reduce emissions. Description of the Drawings

[0013] Figure 1 It is a schematic cross-sectional view of an embodiment of the present utility model.

[0014] Figure 2 It is a schematic view of the brake disc of an embodiment of the present utility model.

[0015] Figure 3 It is a schematic partial cross-sectional view of another embodiment of the present utility model.

[0016] Figure 4 It is a schematic view of the prior art. Detailed Embodiments

[0017] The present utility model will be further described below with reference to the drawings: As shown in the figure, a hub bearing unit with excellent braking performance includes an inner flange 1 and a journal 11. An outer flange 3 is provided on the outer side of the journal, and a bearing connection mechanism is provided between the journal and the outer flange; it further includes a disc-shaped brake disc 4, and the brake disc is connected to the inner flange through fasteners, and the brake disc is arranged between the opposite surfaces of the inner flange and the outer flange. The brake disc has a disc-shaped structure, unlike the concave and convex structure in the prior art (refer to Figure 4 the drawings of the prior art). Simplifying the structure of the brake disc can enhance its own strength, prolong the service life, and shorten the transmission distance of the braking force during braking, which helps to improve the braking stability and efficiency; an installation hole 10 is provided on the inner flange, and then a matching installation hole is provided on the brake disc for installing the fasteners.

[0018] In this embodiment, as shown in the figure, an installation groove 41 is axially provided on the brake disc. The installation groove has a structure with unequal inner diameters, and it at least includes a first groove 411 with a larger inner diameter and a second groove 412 with a smaller inner diameter. The first groove is for the outer wall of the inner flange to pass through, and the inner wall of the second groove is arranged opposite to the circumferential outer wall of the journal. When installing, the outer wall of the inner flange passes through the first groove to prevent obstruction. After installation in place, the second groove will be opposite to the circumferential outer wall of the journal, and there can be a gap of 1 mm to 3 mm, which is convenient for installation.

[0019] In this embodiment, as shown in the figure, the first groove and the second groove are communicated with each other.

[0020] In this embodiment, as shown in the figure, the bearing connection mechanism includes a cage disposed between the outer flange and the journal. A plurality of rolling elements 51 are provided on the cage. The rolling elements are in rolling engagement with the inner wall of the outer flange, and the rolling elements are in rolling engagement with the outer wall of the journal. A raceway can be provided on the inner wall of the outer flange. A half ring can be installed on the outside of the journal, and then a raceway for cooperating with the rolling elements can be installed on the half ring.

[0021] In this embodiment, as shown in the figure, a sealing assembly is further included, and the sealing assembly is disposed outside the rolling elements.

[0022] In this embodiment, as shown in the figure, the sealing assembly includes a dust cover 6. The dust cover is installed on the outer flange and has a baffle 61 for at least partially blocking the empty groove 91 between the axially outer wall of the outer flange and the opposing surface of the inner flange. It can protect the rubber sealing lip, prevent damage caused by the impact of sediment slurry, extend the sealing life, and improve the service life of the product.

[0023] In this embodiment, as shown in the figure, the dust cover further includes a support plate 62 extending in the vertical direction. A sealing lip 621 that is in sealing cooperation with the outer wall of the inner flange is provided on the support plate. The sealing effect is increased.

[0024] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0026] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention. The embodiments should not be regarded as a limitation of the present invention, but any improvement made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A hub bearing unit with excellent braking performance, comprising an inner flange (1) and a journal (11), an outer flange (3) is provided on the outer side of the journal, and a bearing connection mechanism is provided between the journal and the outer flange; characterized in that: It further includes a disc-shaped brake disc (4), which is connected to the inner flange by a fastener, and the brake disc is arranged between the opposite surfaces of the inner flange and the outer flange.

2. The hub bearing unit with excellent braking performance according to claim 1, wherein: The brake disc is axially provided with an installation groove (41), and the installation groove has a structure with unequal inner diameters, which at least includes a first groove (411) with a larger inner diameter and a second groove (412) with a smaller inner diameter. The first groove is for the outer wall of the inner flange to pass through, and the inner wall of the second groove is arranged opposite to the circumferential outer wall of the journal.

3. The hub bearing unit with excellent braking performance according to claim 2, characterized in that: The first groove and the second groove are communicated with each other.

4. The hub bearing unit with excellent braking performance according to claim 3, characterized in that: The bearing connection mechanism includes a cage arranged between the outer flange and the journal. A number of rolling elements (51) are arranged on the cage. The rolling elements are in rolling cooperation with the inner wall of the outer flange, and the rolling elements are in rolling cooperation with the outer wall of the journal.

5. The hub bearing unit with excellent braking performance according to claim 4, characterized in that: It further includes a sealing assembly, and the sealing assembly is arranged on the outer side of the rolling elements.

6. The hub bearing unit with excellent braking performance according to claim 5, characterized in that: The sealing assembly includes a dust cover (6). The dust cover is installed on the outer flange and has a baffle (61) for at least partially shielding the empty groove (91) between the axially outer wall of the outer flange and the opposite surface of the inner flange.

7. A hub bearing unit having excellent braking performance according to claim 6, characterized in that: The dust cover further includes a support plate (62) extending in the vertical direction. A sealing lip (621) that is in sealing cooperation with the outer wall of the inner flange is arranged on the support plate.

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