Constant velocity universal joint transmission shaft with elastic assembly

Abstract

The utility model discloses a constant velocity universal joint transmission shaft with an elastic component. The constant velocity universal joint transmission shaft comprises a shaft tube, a shaft, a protective sleeve component and a universal joint, the universal joint comprises a universal joint shell, an elastic assembly and a rolling body assembly, wherein the elastic assembly and the rolling body assembly are arranged in the universal joint shell. The two ends of the shaft tube are connected with shafts, one ends of the shafts are connected with the shaft tube, and the other ends of the shafts penetrate through the rolling body assembly in the universal joint and then are connected with the elastic assembly. The elastic assembly is axially telescopic, and the tip protruding part of the shaft is in contact with the concave curved surface of the elastic assembly; the shaft and the outer portion of the connecting section of the universal joint are fixed through a protective sleeve assembly. According to the constant velocity universal joint transmission shaft with the elastic assembly, the problem that an existing driving shaft is inconvenient to disassemble, replace and maintain is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of universal joints, in particular to a constant velocity universal joint transmission shaft with an elastic component. Background Art

[0002] Usually, a constant velocity joint is installed on the drive shaft or transmission shaft of a vehicle for power transmission, transferring power from the engine, motor or gearbox to the wheels. The drive shaft, transmission shaft and gearbox are generally assembled together through a constant velocity joint.

[0003] The prior art constant velocity drive shaft and gearbox and engine are usually connected by splines and fixed by retaining springs. However, the drive shaft of some agricultural vehicles needs to be replaced frequently to ensure the transmission of power. The prior art connection method requires special tools to disassemble, which is a cumbersome process.

[0004] In response to the above problems, constant velocity joints with elastic components came into being. However, existing constant velocity joints with elastic components usually adopt an integrated riveting process, which makes it impossible to disassemble and repair the elastic components in the aftermarket, resulting in overall replacement and high maintenance costs. There is room for improvement. Utility Model Content

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a constant velocity universal joint drive shaft with an elastic component to solve the problem that the current drive shaft technology is inconvenient to disassemble, replace and repair.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a constant velocity universal joint transmission shaft with an elastic component, comprising a shaft tube, a shaft, a protective sleeve component, and a universal joint; the universal joint comprises a universal joint housing and an elastic component and a rolling element component arranged in the universal joint housing; both ends of the shaft tube are connected to the shaft, one end of the shaft is connected to the shaft tube, and the other end is connected to the elastic component after passing through the rolling element component in the universal joint; the elastic component is axially retractable, and the protruding part of the tip of the shaft contacts the concave surface of the elastic component; the outside of the connecting section between the shaft and the universal joint is fixed by the protective sleeve component.

[0007] Furthermore, the protective sleeve assembly includes a small retaining spring, a protective sleeve and a large retaining spring; the small retaining spring and the large retaining spring fix the protective sleeve on the shaft and the universal joint housing respectively.

[0008] Furthermore, the rolling element assembly comprises a rolling element, a rolling element retainer and a star-shaped sleeve; the rolling element is arranged in a groove formed by the rolling element retainer and the star-shaped sleeve; and a raceway cooperating with the rolling element is arranged in the universal joint housing.

[0009] Furthermore, a groove is provided between the end of the shaft and the star-shaped sleeve, a second elastic retaining ring is provided in the groove, and the second elastic retaining ring combines the shaft and the star-shaped sleeve.

[0010] Furthermore, a first elastic retaining ring is provided in the groove at the large opening end of the universal joint housing, and the first elastic retaining ring is used to restrict the rolling element assembly in the universal joint housing.

[0011] Furthermore, the elastic component includes a first limiting component, a second limiting component and a coil spring arranged between the first limiting component and the second limiting component; one side of the first limiting component is connected to the coil spring, and the other side is a concave surface for supporting the tip protruding part of the shaft; one side of the second limiting component is connected to the coil spring, and the other side is pressed and riveted into the universal joint housing.

[0012] The beneficial effect of the utility model is that compared with the prior art, the utility model provides a constant velocity universal joint transmission shaft with an elastic component, which stably fixes the coil spring in a predetermined position by supporting one end of the coil spring with the protruding part of the shaft and the concave surface on the first limiting component at the end of the elastic component, and supporting the other end of the coil spring with the second limiting component at the other end of the elastic component, so that the coil spring is not easy to fall off, and the sliding universal joint can be elastically pushed in a sliding manner. When the vehicle needs to replace the transmission shaft, it can be easily removed by simply compressing the shaft as a whole, which solves the cumbersome steps and the trouble of not having special tools when disassembling the prior art products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of the universal joint transmission shaft provided by the utility model.

[0014] Figure 2 This is a partial structural schematic diagram of the universal joint transmission shaft provided by the utility model.

[0015] Figure 3 The present invention is a schematic structural diagram of the universal joint portion of the universal joint transmission shaft provided by the present invention.

[0016] Among them, 101-shaft tube; 102-shaft; 103-protective sleeve assembly; 103a-small retaining spring; 103b-protective sleeve; 103c-large retaining spring; 104-universal joint; 104a-universal joint housing; 104b-first elastic retaining ring rolling element; 104c-rolling element; 104d-rolling element retaining frame; 104e-star sleeve; 105-elastic assembly; 105a-first limiting component; 105b-linear spring; 105c-second limiting component. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the contents disclosed in the present invention.

[0018] Example 1

[0019] A constant velocity universal joint transmission shaft with an elastic component comprises a shaft tube 101, a shaft 102, a protective sleeve component 103, and a universal joint 104. The universal joint 104 comprises a universal joint housing 104a and an elastic component 105 and a rolling element component arranged in the universal joint housing 104a; both ends of the shaft tube 101 are connected to the shaft 102, one end of the shaft 102 is connected to the shaft tube 101, and the other end is connected to the elastic component 105 after passing through the rolling element component in the universal joint 104; the elastic component 105 is axially retractable, and the protruding tip of the shaft 102 contacts the concave surface of the elastic component 105; the outer portion of the connecting section between the shaft 102 and the universal joint 104 is fixed by the protective sleeve component 103. The shaft tube 101 and the shaft 102 are fixed by welding and become the main part of the entire transmission shaft for transmitting power; lubricating grease is added to the inside of the protective sleeve assembly 103 and the inside of the universal joint 104 to prevent impurities from entering the inside of the universal joint 104 and affecting the sliding and rotation of the rolling body 104c.

[0020] The protective sleeve assembly 103 includes a small retaining spring 103a, a protective sleeve 103b and a large retaining spring 103c; the small retaining spring 103a and the large retaining spring 103c respectively fix the protective sleeve 103b on the shaft 102 and the universal joint housing 104a. One end of the protective sleeve 103b is fixedly connected to the shaft 102 through the small retaining spring 103a; the other end of the protective sleeve 103b is fixedly connected to the universal joint housing 104a through the large retaining spring 103c.

[0021] The rolling element assembly includes a rolling element 104c, a rolling element retainer 104d, and a star-shaped sleeve 104e; the rolling element 104c is arranged in a groove formed by the rolling element retainer 104d and the star-shaped sleeve 104e; a raceway matching the rolling element 104c is arranged in the universal joint housing 104a, and the rolling element 104c can slide smoothly in the raceway.

[0022] A groove is provided between the end of the shaft 102 and the star-shaped sleeve 104e, and a second elastic retaining ring 102b is provided in the groove. The second elastic retaining ring 102b combines the shaft 102 and the star-shaped sleeve 104e.

[0023] A first elastic retaining ring 104b is provided in the groove at the large opening end of the universal joint housing 104a, and the first elastic retaining ring 104b is used to restrict the rolling element assembly in the universal joint housing 104a.

[0024] Among them, the elastic component 105 includes a first limiting component 105a, a second limiting component 105c and a linear spring 105b arranged between the first limiting component 105a and the second limiting component 105c; one side of the first limiting component 105a is connected to the linear spring 105b, and the other side is a concave surface for supporting the tip protruding part of the shaft 102; one side of the second limiting component 105c is connected to the linear spring 105b, and the other side is pressed and riveted into the universal joint housing 104a.

[0025] The elastic component 105 is connected in the universal joint housing 104a to provide stable sliding characteristics; it is configured for sliding for torque transmission while allowing angular changes and axial changes. In the constant velocity universal joint 104, the external connection part includes an axially retractable elastic component 105 between the tips of the shaft 102 connected to the internal connection part and the external connection part; the tip of the shaft 102 is provided with an axial protrusion portion for supporting the first limiting component 105a in the elastic component 105 facing the shaft 102, so that it contacts the concave surface of the first limiting component 105a at any turning angle; the ends of the elastic component 105 are provided with a first limiting component 105a and a second limiting component 105c that match the outer diameter of the coil spring 105b on both sides. The second limiting component 105c is press-fitted and riveted on the universal joint housing 104a to prevent it from falling off.

[0026] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A constant velocity universal joint transmission shaft with an elastic component, characterized in that: The invention comprises a shaft tube (101), a shaft (102), a protective sleeve assembly (103), and a universal joint (104); the universal joint (104) comprises a universal joint housing (104a) and an elastic assembly (105) and a rolling element assembly arranged in the universal joint housing (104a); both ends of the shaft tube (101) are connected to the shaft (102), one end of the shaft (102) is connected to the shaft tube (101), and the other end of the shaft (102) passes through the rolling element assembly in the universal joint (104) and is connected to the elastic assembly (105); the elastic assembly (105) is axially retractable, and the protruding tip of the shaft (102) contacts the concave surface of the elastic assembly (105); the outside of the connecting section between the shaft (102) and the universal joint (104) is fixed by the protective sleeve assembly (103).

2. A constant velocity universal joint transmission shaft with an elastic component as claimed in claim 1, characterized in that: The protective sleeve assembly (103) comprises a small retaining spring (103a), a protective sleeve (103b) and a large retaining spring (103c); the small retaining spring (103a) and the large retaining spring (103c) respectively fix the protective sleeve (103b) on the shaft (102) and the universal joint housing (104a).

3. A constant velocity universal joint transmission shaft with an elastic component as claimed in claim 1, characterized in that: The rolling element assembly comprises a rolling element (104c), a rolling element retaining frame (104d), and a star-shaped sleeve (104e); the rolling element (104c) is arranged in a groove formed by the rolling element retaining frame (104d) and the star-shaped sleeve (104e); and a raceway matching the rolling element (104c) is arranged in the universal joint housing (104a).

4. A constant velocity universal joint transmission shaft with an elastic component as claimed in claim 3, characterized in that: A groove is provided between the end of the shaft (102) and the star-shaped sleeve (104e), and a second elastic retaining ring (102b) is provided in the groove. The second elastic retaining ring (102b) combines the shaft (102) and the star-shaped sleeve (104e).

5. A constant velocity universal joint transmission shaft with an elastic component as claimed in claim 1, characterized in that: A first elastic retaining ring (104b) is provided in the groove at the large opening end of the universal joint housing (104a), and the first elastic retaining ring (104b) is used to restrict the rolling element assembly in the universal joint housing (104a).

6. A constant velocity universal joint transmission shaft with an elastic component as claimed in claim 1, characterized in that: The elastic component (105) comprises a first limiting component (105a), a second limiting component (105c), and a coil spring (105b) arranged between the first limiting component (105a) and the second limiting component (105c); one side of the first limiting component (105a) is connected to the coil spring (105b), and the other side is a concave surface for supporting the protruding tip of the shaft (102); one side of the second limiting component (105c) is connected to the coil spring (105b), and the other side is pressed and riveted into the universal joint housing (104a).

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