High performance axle shaft dual slip constant velocity drive axle assembly

Abstract

The utility model provides a high performance axle rod double -slip constant velocity drive shaft assembly, mainly solves the problem of the complicated structure of the double -slip drive shaft assembly of current cage, ball etc. Its characterized in that: the intermediate shaft includes the pipe body (11), is equipped with two mutually isolated cavities (12) inside, is equipped with first drive key in the cavity, first half shaft (13), one end of the first half shaft (13) is inserted into one cavity and is slidably connected with the cavity and is equipped with second drive key (131) for transmitting torque with the first drive key cooperation, and the other end is matched with the first universal joint, second half shaft (14), one end of the second half shaft (14) is inserted into one cavity and is slidably connected with the cavity and is equipped with third drive key for transmitting torque with the first drive key cooperation, and the other end is matched with the second universal joint, the utility model provides a high performance axle rod double -slip constant velocity drive shaft assembly, adopts the key drive to realize the slip and the torque transmission, and adopts two -segment type dust cover, prevents the grease leakage.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a high-performance shaft double-sliding 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 automotive transmission systems, to ensure that the output shaft and input shaft, which are in the same plane, rotate at the same speed, a constant velocity joint (CV joint) drive shaft assembly with double universal joints is often used. The CV joint drive shaft assembly is the power transmission device between the automotive engine and the drive wheels, providing the traction and speed required by the vehicle under various operating conditions, while allowing for coordinated changes and a sufficient range of variation to ensure that the left and right drive wheels can adapt to differential speed requirements. Therefore, the performance and quality of the CV joint drive shaft assembly directly affect the overall vehicle performance and driving safety.

[0003] As shown in the Chinese patent with authorization announcement number CN201144974Y, the existing universal joints with two sliding ends use cages, ball bearings, etc., which have a relatively complex structure. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a high-performance shaft double-sliding constant velocity drive shaft assembly, which mainly solves the problem that the current double-sliding drive shaft assembly adopts cages, ball bearings and other methods, resulting in a relatively complex structure.

[0005] The technical solution of this utility model is as follows:

[0006] A high-performance shaft dual-sliding 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 intermediate shaft includes...

[0007] The tube body has two mutually isolated cavities inside, and a first transmission key is provided in each cavity;

[0008] The first half-shaft has one end extending into one of the cavities and slidingly engaging with the cavity, and is equipped with a second transmission key for transmitting torque in conjunction with the first transmission key; the other end engages with the first universal joint. The second half-shaft has one end extending into one of the cavities and slidingly engaging with the cavity, and is equipped with a third transmission key for transmitting torque in conjunction with the first transmission key; the other end engages with the second universal joint.

[0009] The first universal joint includes a housing and a first dust cover. One end of the first dust cover is connected to the outer wall of the housing, and the other end is connected to the outer wall of the first half-shaft.

[0010] It also includes a second dust cover, one end of which is connected to the outer wall of the tube, and the other end of which is connected to the outer wall of the first half-shaft.

[0011] The first half-shaft is provided with a flange, the tube body is provided with a groove in the axial direction, and also includes an elastic element. One end of the elastic element abuts against the flange, and the other end abuts against the bottom of the groove.

[0012] The tube body includes a middle seat, a left tube, and a right tube. The left tube contains the cavity, and the right tube contains the cavity.

[0013] The intermediate seat is friction-welded to the left tube, and the intermediate seat is friction-welded to the right tube.

[0014] The intermediate seat is equipped with a partition for separating the two cavities.

[0015] The elastic element is a spring.

[0016] The beneficial effects of this utility model are: This utility model provides a high-performance shaft double sliding constant velocity drive shaft assembly, which uses key transmission to realize sliding and torque transmission, and adopts a two-stage dust cover to prevent grease leakage. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0018] Figure 2 This is a partial structural diagram of one embodiment of the present invention.

[0019] Figure 3 This is a partial explosion diagram of one embodiment of the present invention. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. A high-performance shaft double-sliding 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 intermediate shaft includes a tube body 11, which has two mutually isolated cavities 12 inside. A first transmission key is provided in each cavity. A first half-shaft 13 has one end extending into one of the cavities and slidingly engaging with the cavity and cooperating with the first transmission key, and is provided with a second transmission key 131 for transmitting torque. The other end is engaged with the first universal joint. A second half-shaft 14 has one end extending into one of the cavities and slidingly engaging with the cavity and cooperating with the first transmission key, and is provided with a third transmission key for transmitting torque. The other end is engaged with the second universal joint. As a preferred option, both the first and second universal joints can be ball-cage type universal joints, or even AC joints. The intermediate shaft is traditionally a solid shaft; this design features internal spline tubes on both sides of the intermediate shaft, with mating splines on the first and second half-shafts. Damping springs are installed on both sides, and appropriate grease is applied to the outer spline side for assembly. A dust cover is used to seal the mating joint. This double-sliding shaft structure is simple to assemble and slides smoothly without jamming during use. With the added damping springs on both sides, the splined sliding shaft can be quickly reset after sliding out, and it also provides shock absorption, enabling the drive shaft assembly to resist impact and damping under complex road conditions. This mitigates the risks caused by impacts, effectively protects the drive shaft assembly's fatigue resistance, increases its service life, and reduces the risk of failure. This allows the vehicle to effectively utilize the performance of the drive shaft assembly during operation, is easy to install, and ensures the entire drive shaft is safe and reliable during operation.

[0021] In this embodiment, as shown in the figure, the first universal joint includes a housing 21 and a first dust cover 31. One end of the first dust cover is connected to the outer wall of the housing, and the other end is connected to the outer wall of the first half-shaft.

[0022] In this embodiment, as shown in the figure, a second dust cover 32 is also included. One end of the second dust cover is connected to the outer wall of the tube, and the other end is connected to the outer wall of the first half-shaft. By using a two-section dust cover, grease and hot air inside the first dust cover will not escape into the second dust cover.

[0023] In this embodiment, as shown in the figure, the first half-shaft is provided with a flange 132, the tube body is provided with a groove 111 in the axial direction, and also includes an elastic member 15. One end of the elastic member abuts against the flange, and the other end abuts against the bottom of the groove.

[0024] In this embodiment, as shown in the figure, the tube body includes a middle seat 112, a left tube 113, and a right tube 114. The left tube and the right tube each have a cavity inside them. After manufacturing, they are assembled together by friction welding.

[0025] In this embodiment, as shown in the figure, the intermediate seat is friction-welded to the left tube and the intermediate seat is friction-welded to the right tube.

[0026] In this embodiment, as shown in the figure, the intermediate seat is provided with a partition 1121 for isolating the two cavities.

[0027] In this embodiment, as shown in the figure, the elastic element is a spring.

[0028] 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.

[0029] 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.

[0030] 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-performance shaft double-sliding constant velocity drive shaft assembly, comprising an intermediate shaft (1), wherein 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), characterized in that: The intermediate shaft includes The tube body (11) has two mutually isolated cavities (12) inside, and the first transmission key is provided in the cavity; The first half-shaft (13) has one end extending into a cavity and slidingly engaging with the cavity and engaging with the first transmission key, and is provided with a second transmission key (131) for transmitting torque; the other end engages with the first universal joint. The second half-shaft (14) has one end extending into one of the cavities and slidingly engaging with the cavity and engaging with the first transmission key, and is provided with a third transmission key for transmitting torque; the other end engages with the second universal joint.

2. The high-performance shaft double-sliding constant velocity drive shaft assembly according to claim 1, characterized in that: The first universal joint includes a housing (21) and a first dust cover (31), one end of which is connected to the outer wall of the housing and the other end of which is connected to the outer wall of the first half-shaft.

3. A high-performance shaft double-sliding constant velocity drive shaft assembly according to claim 1, characterized in that: It also includes a second dust cover (32), one end of which is connected to the outer wall of the tube and the other end of which is connected to the outer wall of the first half-shaft.

4. A high-performance shaft double-sliding constant velocity drive shaft assembly according to any one of claims 1-3, characterized in that: The first half-shaft is provided with a flange (132), the tube body is provided with a groove (111) in the axial direction, and also includes an elastic element (15). One end of the elastic element abuts against the flange, and the other end abuts against the bottom of the groove.

5. A high-performance shaft double-sliding constant velocity drive shaft assembly according to claim 4, characterized in that: The tube body includes a middle seat (112), a left tube (113) and a right tube (114), with the cavity inside the left tube and the cavity inside the right tube.

6. A high-performance shaft double-sliding constant velocity drive shaft assembly according to claim 5, characterized in that: The intermediate seat is friction-welded to the left tube, and the intermediate seat is friction-welded to the right tube.

7. A high-performance shaft double-sliding constant velocity drive shaft assembly according to claim 6, characterized in that: The intermediate seat is provided with a partition (1121) for separating the two cavities.

8. A high-performance shaft double-sliding constant velocity drive shaft assembly according to claim 4, characterized in that: The elastic element is a spring.

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