High load low friction constant velocity drive shaft assembly

Abstract

A high-load, low-friction constant velocity drive shaft assembly. This primarily addresses the problem that traditional bearings on the moving end of the shaft directly engage with the differential, failing to provide shock absorption and thus affecting service life. The assembly is characterized by: a half-shaft (4) located on one side of the outer wall of the housing for connection to the differential (9); a bearing (41) mounted on the half-shaft; and an annular sleeve (5) fitted onto the circumferential outer wall of the bearing, its circumferential outer wall contacting the differential. This invention provides a high-load, low-friction constant velocity drive shaft assembly. The bearing is wrapped with high-strength rubber, effectively providing shock absorption and allowing for flexible application. It also supports the universal joint on the moving end, ensuring the universal joint remains centered even at high speeds, reducing the load-bearing capacity of the spline and improving the power output of the drive shaft.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a high-load, low-friction constant velocity drive shaft assembly. Background Technology

[0002] With the continuous development of the automotive industry, people have increasingly higher requirements for the overall performance of automobiles. In order to make the output shaft and input shaft, which are in the same plane, rotate at the same speed, a constant velocity joint drive shaft assembly with double universal joint transmission is often used in the automotive transmission system.

[0003] The constant velocity joint drive shaft assembly is a power transmission device between the automobile engine and the drive wheels. It is used to provide the traction force and speed required by the automobile under various operating conditions, while enabling the two to change in coordination and with a sufficient range of variation, ensuring that the left and right drive wheels of the automobile can adapt to differential requirements.

[0004] Therefore, the performance and quality of the constant velocity joint drive shaft assembly directly affect the overall vehicle performance and driving safety. In the prior art, the structure of the constant velocity joint drive shaft assembly is generally as follows: one end is a fixed ball joint, the other end is a sliding telescopic ball joint, and the middle is an intermediate shaft connecting the fixed joint and the sliding joint.

[0005] Traditional moving end rods have bearings that directly engage with the differential, which cannot reduce vibration and affect service life. Utility Model Content

[0006] To overcome the shortcomings of the prior art, this utility model provides a high-load, low-friction constant velocity drive shaft assembly, which mainly solves the problem that the bearings on the traditional moving end rod directly cooperate with the differential, which cannot reduce vibration and affect service life.

[0007] The technical solution of this utility model is as follows:

[0008] A high-load, low-friction constant velocity drive shaft assembly includes an intermediate shaft, one end of which is connected to a first universal joint, and the other end is provided with a second universal joint. The first universal joint includes a housing and further includes...

[0009] The half-shaft is located on one side of the outer wall of the housing and is used to connect to the differential.

[0010] A bearing is mounted on the half-shaft;

[0011] An annular sleeve is fitted onto the circumferential outer wall of the bearing, and its circumferential outer wall contacts the differential.

[0012] The annular sleeve is made of rubber.

[0013] The annular sleeve includes an outer ring and an inner ring, which are connected by a number of support walls.

[0014] It also includes a dust seal, which is installed on the half-shaft and positioned opposite to the bearing.

[0015] The half-shaft is provided with several parallel oil grooves.

[0016] The bearing includes a bracket and rolling balls, and a sealing ring is installed on the bracket, with the sealing ring located on both sides of the rolling balls.

[0017] A toothed ring is installed on the outer wall of the housing.

[0018] The inner wall of the inner ring is provided with a groove, and part of the bearing is installed in the groove.

[0019] The beneficial effects of this utility model are: This utility model provides a high-load, low-friction constant velocity drive shaft assembly, whose bearing is wrapped with high-strength rubber, which effectively plays a role in shock absorption, is flexible in application, and also supports the universal joint at the moving end. Even when the assembly is running at high speed, it can ensure that the moving universal joint is not eccentric, which reduces the load-bearing capacity of the spline and improves the power output of the drive shaft. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0021] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0022] Figure 3 This is a schematic diagram of an annular sleeve according to an embodiment of the present invention. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings. A high-load, low-friction constant velocity drive shaft assembly includes an intermediate shaft 1. One end of the intermediate shaft is connected to a first universal joint 2, and the other end is provided with a second universal joint 3. The first universal joint includes a housing 21 and a half-shaft disposed on one side of the outer wall of the housing for connection with a differential 9. A bearing 41 is disposed on the half-shaft. An annular sleeve 5 is sleeved on the circumferential outer wall of the bearing, and its circumferential outer wall contacts the differential. This application effectively increases the service life of the drive shaft assembly. During use, the moving end rod, supported by bearings and annular sleeves, reduces the load-bearing capacity of the spline, improving the smooth power output of the drive shaft. The oil groove on the moving end rod ensures smooth flow of differential grease, continuously releasing grease during the movement of the rolling elements in the rod, reducing dry friction loss at the metal contact surface. The flowing grease, circulating through the oil groove, can carry away the local heat generated by friction. Moreover, sufficient lubrication reduces hard impacts and lowers high-frequency vibrations and abnormal noises. The overall drive shaft assembly features strong power transmission, a compact and reasonable structural design, uniform power transmission, high efficiency, smooth operation, low noise, and strong performance.

[0024] In this embodiment, as shown in the figure, the annular sleeve is made of rubber.

[0025] In this embodiment, as shown in the figure, the annular sleeve includes an outer ring 51 and an inner ring 52, which are connected by a plurality of support walls 53. This facilitates deformation buffering.

[0026] In this embodiment, as shown in the figure, a dustproof ring 6 is also included, which is installed on the half shaft and positioned opposite to the bearing.

[0027] In this embodiment, as shown in the figure, the half-shaft is provided with a plurality of parallel oil grooves 42.

[0028] In this embodiment, as shown in the figure, the bearing includes a bracket and rolling balls 43. A sealing ring 44 is mounted on the bracket, and the sealing ring is located on both sides of the rolling balls to prevent leakage.

[0029] In this embodiment, as shown in the figure, a toothed ring 211 is installed on the outer wall of the housing. This serves a heat dissipation function, promptly absorbing the heat generated by the high-speed operation inside the housing, reducing the risk of grease failure, and effectively protecting the normal operation of the internal components of the mobile universal joint.

[0030] In this embodiment, as shown in the figure, the inner wall of the inner ring is provided with a groove 511, and part of the bearing is installed in the groove. Disassembly and assembly are convenient.

[0031] 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.

[0032] 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.

[0033] 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. A high load low friction constant velocity drive shaft assembly comprising a middle shaft (1) having a first universal joint (2) at one end and a second universal joint (3) at the other end, the first universal joint comprising a housing (21), characterised in that: Also includes The half-shaft is located on one side of the outer wall of the housing and is used to connect with the differential (9); The bearing (41) is disposed on the half shaft; An annular sleeve (5) is fitted onto the circumferential outer wall of the bearing, and its circumferential outer wall is in contact with the differential.

2. A high load, low friction constant velocity axle assembly of claim 1 wherein: The annular sleeve is made of rubber.

3. A high load, low friction constant velocity axle assembly as described in claim 1, wherein: The annular sleeve includes an outer ring (51) and an inner ring (52), which are connected by a plurality of support walls (53).

4. A high-load, low-friction constant-velocity drive shaft assembly according to claim 1, characterized in that: It also includes a dustproof ring (6), which is installed on the half shaft and positioned opposite to the bearing.

5. A high-load, low-friction, constant-velocity drive shaft assembly according to claim 1, characterized in that: The half-shaft is provided with several parallel oil grooves (42).

6. A high-load, low-friction, constant-velocity drive shaft assembly according to claim 1, characterized in that: The bearing includes a bracket and a ball bearing (43), and a sealing ring (44) is installed on the bracket, with the sealing ring located on both sides of the ball bearing.

7. A high-load, low-friction, constant-velocity drive shaft assembly according to any one of claims 1-6, characterized in that: A toothed ring (211) is installed on the outer wall of the housing.

8. A high-load, low-friction constant velocity drive shaft assembly according to claim 3, characterized in that: The inner wall of the inner ring is provided with a groove (511), and part of the bearing is installed in the groove.

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