Integrated hub bearing unit

Abstract

An integrated hub bearing unit. Mainly solve the problem of traditional hub bearing unit sealing performance has the problem of insufficient. Its characterized in that: still include the baffle (3), install on the flange plate towards the outer ring extends and its inner wall with the circumferential outer wall between the outer ring is equipped with the first sealing element (31);Second sealing element (41), be equipped with between the circumferential inner wall of the outer ring and the circumferential outer wall of the half shaft;Third sealing element (42), be equipped with between the circumferential inner wall of the outer ring and the circumferential outer wall of the inner ring, the third sealing element is equipped with in the horizontal direction of the outer side of the ball.The utility model provides an integrated hub bearing unit, can effectively block the outside dust and water into the hub unit through triple sealing structure, greatly improve the service life of hub unit.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to an integrated wheel hub bearing unit. Background Technology

[0002] Traditional wheel hub bearing units suffer from loose structure, complex assembly processes, and high costs. Furthermore, their sealing performance and service life need further improvement, and they struggle to meet the demands of modern automobiles for lightweight and highly reliable active safety systems. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides an integrated wheel hub bearing unit, which mainly solves the problem of insufficient sealing performance of traditional wheel hub bearing units.

[0004] The technical solution of this utility model is as follows: An integrated wheel hub bearing unit includes a flange and inner and outer ring assemblies. A half-shaft is mounted on the flange. The inner and outer ring assemblies include an inner ring and an outer ring. The inner ring is mounted on the half-shaft. A cage is provided between the inner ring and the outer ring, and the cage holds rolling balls. A baffle is installed on the flange, with one end extending toward the outer ring and a first sealing element provided between its inner wall and the circumferential outer wall of the outer ring; The second seal is disposed between the circumferential inner wall of the outer ring and the circumferential outer wall of the half shaft; The third seal is disposed between the circumferential inner wall of the outer ring and the circumferential outer wall of the inner ring, and the third seal is disposed on the outer side of the ball in the horizontal direction.

[0005] The inner ring is press-fitted onto the half shaft.

[0006] The half-shaft is provided with a retaining ring and an elastic ring assembly. One end of the inner ring contacts the retaining ring, and the other end contacts the elastic ring assembly.

[0007] The elastic ring assembly includes an elastic ring, a bushing, and a retaining ring. The elastic ring contacts the inner ring, and one end of the bushing contacts the elastic ring, while the other end contacts the retaining ring.

[0008] The half-shaft is provided with an annular groove for mounting the retaining ring.

[0009] The baffle is mounted on the flange by fasteners.

[0010] The first sealing element is a sealing ring.

[0011] The elastic coil is a disc spring.

[0012] The beneficial effects of this utility model are: This utility model provides an integrated wheel hub bearing unit, which can effectively prevent external dust and water from entering the wheel hub unit through a triple sealing structure, greatly improving the service life of the wheel hub unit. Attached Figure Description

[0013] Figure 1 This is a cross-sectional schematic diagram of one embodiment of the present invention.

[0014] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0015] Figure 3 This is a partial schematic diagram of one embodiment of the present invention. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings. An integrated wheel hub bearing unit includes a flange 1 and inner and outer ring assemblies 2. A half-shaft 11 is provided on the flange. The inner and outer ring assemblies include an inner ring 21 and an outer ring 22. The inner ring is mounted on the half-shaft. A cage is provided between the inner ring and the outer ring. The cage is provided with balls 23. The unit also includes... A baffle 3 is installed on the flange, with one end extending toward the outer ring and a first sealing element 31 provided between its inner wall and the circumferential outer wall of the outer ring; a second sealing element 41 is provided between the circumferential inner wall of the outer ring and the circumferential outer wall of the half shaft; a third sealing element 42 is provided between the circumferential inner wall of the outer ring and the circumferential outer wall of the inner ring, and the third sealing element is located on the outer side of the ball in the horizontal direction.

[0017] First, the flange is integrated onto the half-shaft as a single unit. The baffle is then bolted onto the baffle plate, and the mudguard 6 is bolted onto the inner and outer ring assemblies. Next, the assembled inner and outer ring assemblies are simultaneously pressed into the intermediate shaft of the baffle plate. The disc spring and bushing are then pressed into the half-shaft for locking. The disc spring is pre-tightened, and the bushing and intermediate shaft are locked by an interference fit. Finally, a retaining ring provides limiting. This triple-seal structure—the cooperation between the baffle and the first seal, the seal between the outer ring and the intermediate shaft (via the second seal), and the internal sealing structure of the inner and outer ring assemblies themselves (via the third seal)—effectively prevents external dust and water from entering, significantly extending service life.

[0018] In this embodiment, as shown in the figure, the inner ring is press-fitted onto the half shaft.

[0019] In this embodiment, as shown in the figure, the half-shaft is provided with a retaining ring 111 and an elastic ring assembly. One end of the inner ring contacts the retaining ring, and the other end contacts the elastic ring assembly. This makes the installation more stable.

[0020] In this embodiment, as shown in the figure, the elastic ring assembly includes an elastic ring 51, a bushing 52, and a retaining ring 53. The elastic ring is in contact with the inner ring, one end of the bushing is in contact with the elastic ring, and the other end is in contact with the retaining ring.

[0021] In this embodiment, as shown in the figure, the half-shaft is provided with an annular groove 112 for mounting the retaining ring. This makes the mounting more secure.

[0022] In this embodiment, as shown in the figure, the baffle is mounted on the flange by fasteners 9. The fasteners can be screws, bolts, etc.

[0023] In this embodiment, as shown in the figure, the first sealing element is a sealing ring. The second and third sealing elements can be either skeleton oil seals or sealing rings.

[0024] In this embodiment, as shown in the figure, the elastic coil is a disc spring.

[0025] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. An integrated hub bearing unit, comprising a flange (1) and an inner and outer ring assembly (2), wherein a half-shaft (11) is provided on the flange, the inner and outer ring assembly comprises an inner ring (21) and an outer ring (22), the inner ring is mounted on the half-shaft, a cage is provided between the inner ring and the outer ring, and a ball (23) is provided on the cage, characterized in that: Also includes A baffle (3) is installed on the flange, with one end extending toward the outer ring and a first sealing element (31) provided between its inner wall and the circumferential outer wall of the outer ring. The second seal (41) is disposed between the circumferential inner wall of the outer ring and the circumferential outer wall of the half shaft; The third seal (42) is disposed between the circumferential inner wall of the outer ring and the circumferential outer wall of the inner ring, and the third seal is disposed on the outer side of the ball in the horizontal direction.

2. The integrated hub bearing unit according to claim 1, characterized in that: The inner ring is press-fitted onto the half shaft.

3. An integrated hub bearing unit according to claim 1, characterized in that: The half-shaft is provided with a retaining ring (111) and an elastic ring assembly. One end of the inner ring is in contact with the retaining ring, and the other end is in contact with the elastic ring assembly.

4. An integrated wheel hub bearing unit according to claim 3, characterized in that: The elastic ring assembly includes an elastic ring (51), a bushing (52), and a retaining ring (53). The elastic ring is in contact with the inner ring, one end of the bushing is in contact with the elastic ring, and the other end is in contact with the retaining ring.

5. An integrated wheel hub bearing unit according to claim 4, characterized in that: The half-shaft is provided with an annular groove (112) for mounting the retaining ring.

6. An integrated wheel hub bearing unit according to any one of claims 1-5, characterized in that: The baffle is mounted on the flange by fasteners (9).

7. An integrated wheel hub bearing unit according to claim 1, characterized in that: The first sealing element is a sealing ring.

8. An integrated wheel hub bearing unit according to claim 4, characterized in that: The elastic coil is a disc spring.

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