High torque shock absorbing constant velocity drive axle assembly

Abstract

A high-torque damping constant velocity drive shaft assembly. This primarily addresses the problem that traditional constant velocity drive shafts, where the bearings directly engage with the differential, fail to provide damping, thus affecting service life. The assembly is characterized by: a half-shaft (4) located on the outer wall of the housing; a flange (5) mounted to the half-shaft, the outer wall of which is provided with fasteners (51) for connection with the differential (9); and an elastic element (52), one end of which presses against the outer wall of the flange or half-shaft, and the other end of which presses against the differential. This invention provides a high-torque damping constant velocity drive shaft assembly. The damping spring engages with the differential contact surface, enabling the vehicle to dampen shocks during high-torque impact operation, reducing impact, preventing loosening at the joint between the CV joint and the differential, effectively protecting the high-torque performance of the drive shaft assembly, improving its service life, and reducing the risk of failure.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a high-torque damping 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.

[0005] In the existing technology, the constant velocity universal joint drive shaft assembly is connected to the ball cage flange end face only by screws, which results in large vibrations during high torque transmission. Utility Model Content

[0006] To overcome the shortcomings of the prior art, this utility model provides a high-torque damping constant velocity drive shaft assembly, which mainly solves the problem that the bearings on the rod of the traditional constant velocity drive shaft directly cooperate with the differential, which cannot dampen vibration and affects service life.

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

[0008] A high-torque damping 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] A half-shaft is disposed on the outer wall of the housing;

[0010] A flange is mounted to the half-shaft, and the outer wall of the flange is provided with fasteners for connection with the differential.

[0011] The elastic element has one end pressing against the outer wall of the flange or half-shaft, and the other end pressing against the differential.

[0012] The elastic element is a spring.

[0013] The half-shaft is provided with a groove, and the spring at one end is located in the groove.

[0014] The flange is provided with a mounting hole, and a transmission key is provided in the mounting hole. Part of the half shaft is provided in the mounting hole and is provided with a second transmission key that cooperates with the transmission key.

[0015] The fastener is a bolt.

[0016] The fasteners are provided in six parts and arranged around the elastic element.

[0017] A damping block is installed on the intermediate shaft.

[0018] The second universal joint includes a second housing, which has a threaded mounting hole in the axial direction.

[0019] The beneficial effects of this utility model are as follows: This utility model provides a high-torque damping constant velocity drive shaft assembly. The damping spring is used in conjunction with the differential to enable the vehicle to play a role in damping under high torque impact operation, reducing impact, preventing loosening at the joint between the CV joint and the differential, effectively protecting the high torque performance of the drive shaft assembly, improving the service life of the drive shaft, and reducing the risk of failure. Attached Figure Description

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

[0021] Figure 2 This is a partial explosion diagram of one embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of an embodiment of the present invention installed together with a differential. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings. A high-torque damping constant velocity drive shaft assembly includes an intermediate shaft 1, one end of which 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 4 disposed on the outer wall of the housing; a flange 5, which is installed with the half-shaft, and the outer wall of the flange is provided with fasteners 51 for connecting with a differential 9; and an elastic element 52, one end of which abuts against the outer wall of the flange or half-shaft, and the other end of which abuts against the differential. The traditional method of connecting the external spline of the rod to the internal spline of the differential is eliminated. A flange structure is designed for connection with the differential, using six bolts for locking, which greatly improves the high torque transmission function of the drive shaft assembly and prevents rod breakage during high torque operation. Furthermore, an inner hole is designed in the middle of the CV joint flange end face to mount a damping spring. This spring works in conjunction with the differential. When the bolts are locked to the CV joint flange end face, the damping spring acts to absorb shocks during high-torque impact operation, reducing impact and preventing loosening at the CV joint and differential connection. This effectively protects the high-torque performance of the drive shaft assembly, improves its service life, and reduces the risk of failure. A damping block is added to the high-torque damping constant velocity drive shaft assembly at the corresponding position on the intermediate shaft.

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

[0025] In this embodiment, as shown in the figure, the half-shaft is provided with a groove 41, and the spring at one end is disposed in the groove.

[0026] In this embodiment, as shown in the figure, the flange is provided with mounting holes 55, and a transmission key is provided in the mounting holes. Part of the half-shaft is disposed in the mounting holes and is provided with a second transmission key that cooperates with the transmission key. Furthermore, the axial outer wall transmission shafts of the flange can be welded together to increase the overall stability.

[0027] In this embodiment, as shown in the figure, the fastener is a bolt.

[0028] In this embodiment, as shown in the figure, there are six fasteners arranged around the elastic element.

[0029] In this embodiment, as shown in the figure, a damping block 11 is installed on the intermediate shaft. This effectively suppresses resonance noise generated during high-speed operation. During torque transmission between the gearbox and the drive shaft, the damping block buffers the impact force generated by road bumps or rapid acceleration / deceleration through its own deformation, reducing the vibration of the drive shaft assembly and improving NVH performance.

[0030] In this embodiment, as shown in the figure, the second universal joint includes a second housing, and the second housing is provided with a threaded mounting hole 31 in the axial direction. The external thread nut is designed to be connected with an internal thread bolt, which reduces the space required and improves the risk of loosening of the ball joint, effectively protecting the performance of the drive shaft and ensuring the safety of the vehicle during driving.

[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-torque damping constant velocity drive shaft assembly, comprising an intermediate shaft (1), one end of which is connected to a first universal joint (2), and the other end of which is provided with a second universal joint (3), wherein the first universal joint includes a housing (21), characterized in that: Also includes The half-shaft (4) is disposed on the outer wall of the housing; A flange (5) is mounted to the half shaft, and the outer wall of the flange is provided with fasteners (51) for connection with the differential (9). The elastic element (52) has one end pressing against the outer wall of the flange or half shaft, and the other end pressing against the differential.

2. A high-torque damping constant velocity drive shaft assembly according to claim 1, characterized in that: The elastic element is a spring.

3. A high-torque damping constant velocity drive shaft assembly according to claim 2, characterized in that: The half-shaft is provided with a groove (41), and the spring at one end is located in the groove.

4. A high-torque damping constant velocity drive shaft assembly according to claim 1, characterized in that: The flange is provided with a mounting hole (55), and a transmission key is provided in the mounting hole. Part of the half shaft is provided in the mounting hole and is provided with a second transmission key that cooperates with the transmission key.

5. A high-torque damping constant velocity drive shaft assembly according to claim 1, characterized in that: The fastener is a bolt.

6. A high-torque damping constant velocity drive shaft assembly according to claim 1, characterized in that: The fasteners are provided in six parts and arranged around the elastic element.

7. A high-torque damping constant velocity drive shaft assembly according to any one of claims 1-6, characterized in that: A damping block (11) is installed on the intermediate shaft.

8. A high-torque damping constant velocity drive shaft assembly according to claim 1, characterized in that: The second universal joint includes a second housing, which has a threaded mounting hole (31) in the axial direction.

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