Automobile half axle assembly

Abstract

The utility model discloses an automobile half axle assembly which comprises a polished shaft, the first end of the polished shaft is used for being connected with a transmission, the second end of the polished shaft is connected with an outer ball cage through a spherical bearing, and a first dustproof cover is arranged between the outer side of the outer ball cage and the polished shaft in a sleeved mode. The outer side of the first end of the optical shaft is sleeved with a second dust cover, a bearing is arranged between the inner side of the second dust cover and the optical shaft, and a connecting ring connected with a transmission is installed on the outer side of the second dust cover. The utility model can solve the problem that the dust cover at one end of the half shaft in the prior art is twisted and fails.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile half-axles, in particular to an automobile half-axle assembly. Background Art

[0002] A driver shaft, also called a constant velocity joint (CVJ), connects the differential to the drive wheels. A halfshaft transfers torque between the transmission's speed reducer and the drive wheels. Dust covers are typically installed at both ends of the halfshaft. The cover at one end, connected to the outer ball cage, rotates with the cage, while the cover at the other end, connected to the differential, does not rotate with the halfshaft. This can cause the cover to twist during operation, eventually leading to its failure. Utility Model Content

[0003] The utility model provides an automobile half-shaft assembly, which can solve the problem in the prior art that a dust cover at one end of the half-shaft may be twisted and become ineffective.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automobile half-axle assembly, comprising an optical axis, wherein the first end of the optical axis is used to be connected to a transmission, the second end of the optical axis is connected to an outer ball cage through a spherical bearing, a first dust cover is sleeved between the outer side of the outer ball cage and the optical axis, a second dust cover is sleeved on the outer side of the first end of the optical axis, a bearing is arranged between the inner side of the second dust cover and the optical axis, and a connecting ring connected to the transmission is installed on the outer side of the second dust cover.

[0005] Preferably, a retaining ring is sleeved on the optical axis of the bearing on the side facing the first dust cover, and the diameter of the retaining ring is larger than the outer diameter of the end of the second dust cover connected to the bearing.

[0006] Preferably, the bearing includes an outer ring connected to the second dust cover and an inner ring connected to the optical axis, a sealing cavity and a ball cavity are formed between the outer ring and the inner ring, bearing balls are installed in the ball cavity, the sealing cavity is arranged on the side of the bearing facing the first dust cover, and a multi-lip seal is arranged inside the sealing cavity.

[0007] Preferably, a first sealing retaining ring is installed near the outside of the sealing cavity, and the multi-lip seal is fixed on the outer ring. The multi-lip seal has a first sealing lip in contact with the first sealing retaining ring and a second sealing lip in contact with the inner ring.

[0008] Preferably, a separation sealing ring is provided between the sealing cavity and the ball cavity, and the outer side of the separation sealing ring is engaged with the outer ring.

[0009] Preferably, a ball sealing ring is provided inside the ball cavity near the axial outer side, and a second sealing retaining ring is provided on the axial outer side of the ball sealing ring.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] By arranging a bearing between the second dust cover and the optical axis, the second dust cover will not rotate when the half-shaft is running, thereby avoiding failure of the second dust cover due to torsion. The bearing has a multiple sealing structure, which can prevent the entry of external dust and ensure the high speed and quietness of the bearing operation. The second dust cover is directly connected to the transmission through a connecting ring and is reliably installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a main cross-sectional structural diagram of the present utility model;

[0013] Figure 2 for Figure 1 A magnified structure diagram of the . DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0015] like Figure 1-2 As shown, the utility model provides an automobile half-axle assembly, including an optical axis 1, a first end of the optical axis 1 is used to be connected to a transmission, a second end of the optical axis 1 is connected to an outer ball cage 5 through a spherical bearing 4, a first dust cover 6 is sleeved between the outer side of the outer ball cage 5 and the optical axis 1, a second dust cover 2 is sleeved on the outer side of the first end of the optical axis 1, a bearing 3 is provided between the inner side of the second dust cover 2 and the optical axis 1, and a connecting ring 7 connected to the transmission is installed on the outer side of the second dust cover 2.

[0016] Specifically, the outer ball cage 5 is used to connect the automobile wheel hub, the spherical bearing 4 can ensure the relative swing between the optical axis 1 and the outer ball cage 5, and the inner side of the first dust cover 6 is filled with lubricating grease to ensure flexible transmission between the optical axis 1 and the outer ball cage 5.

[0017] The bearing 3 can support the second dust cover 2, and the second dust cover 2 can remain stationary when the optical axis 1 rotates at high speed. The connecting ring 7 is a metal sheet metal part and can be firmly connected to the outer casing of the transmission. The connecting ring 7 presses the second dust cover 2 onto the transmission, and the sealing effect is good.

[0018] In this embodiment, if Figure 1-2As shown, a retaining ring 8 is provided on the optical axis 1 on the side of the bearing 3 facing the first dust cover 6. The diameter of the retaining ring 8 is larger than the outer diameter of the end where the second dust cover 2 is connected to the bearing 3. The retaining ring 8 can not only limit the bearing 3, but also block dust to a certain extent, thereby reducing the direct impact of dust on the bearing 3.

[0019] In order to improve the sealing performance of the bearing 3 and ensure its high speed, the bearing 3 includes an outer ring 31 connected to the second dust cover 2 and an inner ring 32 connected to the optical axis 1. A sealing cavity 38 and a ball cavity are formed between the outer ring 31 and the inner ring 32. Bearing balls are installed in the ball cavity. The sealing cavity 38 is arranged on the side of the bearing 3 facing the first dust cover 6. A multi-lip seal 33 is arranged inside the sealing cavity 38. The multi-lip seal 33 can use the space of the sealing cavity 38 to block dust.

[0020] In this embodiment, a first sealing ring 34 is installed near the outside of the sealing cavity 38. The multi-lip seal 33 is fixed to the outer ring 31. The multi-lip seal 33 has a first sealing lip that contacts the first sealing ring 34 and a second sealing lip that contacts the inner ring 32. Furthermore, a separator seal 37 is provided between the sealing cavity 38 and the ball cavity. The outer side of the separator seal 37 is engaged with the outer ring 31.

[0021] Although the second dust cover 2 can protect the other side of the bearing 3 from dust, dust will still enter, so a ball seal ring 35 is provided inside the ball cavity near the axial outer side, and a second sealing ring 36 is provided on the axial outer side of the ball seal ring 35.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. An automobile half-axle assembly, characterized in that: include: An optical axis (1), wherein the first end of the optical axis (1) is used to be connected to a transmission, the second end of the optical axis (1) is connected to an outer ball cage (5) via a spherical bearing (4), a first dust cover (6) is provided between the outer side of the outer ball cage (5) and the optical axis (1), a second dust cover (2) is provided on the outer side of the first end of the optical axis (1), a bearing (3) is provided between the inner side of the second dust cover (2) and the optical axis (1), and a bearing (4) is provided on the outer side of the second dust cover (2). A connecting ring (7) connected to the transmission is provided, the bearing (3) includes an outer ring (31) connected to the second dust cover (2) and an inner ring (32) connected to the optical axis (1), a sealing cavity (38) and a ball cavity are formed between the outer ring (31) and the inner ring (32), a bearing ball is installed in the ball cavity, the sealing cavity (38) is provided on the side of the bearing (3) facing the first dust cover (6), and a multi-lip seal (33) is provided inside the sealing cavity (38); A first sealing retaining ring (34) is installed near the outer side of the sealing cavity (38), and the multi-lip seal (33) is fixed on the outer ring (31). The multi-lip seal (33) has a first sealing lip in contact with the first sealing retaining ring (34) and a second sealing lip in contact with the inner ring (32).

2. The automobile half-axle assembly according to claim 1, characterized in that: A retaining ring (8) is sleeved on the optical axis (1) of the bearing (3) on the side facing the first dust cover (6), and the diameter of the retaining ring (8) is larger than the outer diameter of the end of the second dust cover (2) connected to the bearing (3).

3. The automobile half-axle assembly according to claim 1, characterized in that: A separation sealing ring (37) is provided between the sealing cavity (38) and the ball cavity, and the outer side of the separation sealing ring (37) is clamped with the outer ring (31).

4. The automobile half-axle assembly according to claim 1, characterized in that: A ball sealing ring (35) is provided in the ball cavity at a position close to the axial outer side, and a second sealing retaining ring (36) is provided on the axial outer side of the ball sealing ring (35).

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