Adjustable transmission shaft assembly

Abstract

The utility model discloses an adjustable transmission shaft assembly. The problem that the length of a conventional transmission shaft assembly is troublesome to adjust is mainly solved. The mounting groove (11) is formed in the axial direction of the intermediate shaft; a part of the first half shaft extends into the mounting groove, and a part of the first half shaft extends into the shell and is provided with a star-shaped sleeve (23); the positioning groove (221) is formed in the circumferential outer wall of the first half shaft; the fixing groove (12) is formed in the circumferential direction of the intermediate shaft in a penetrating mode and communicates with the mounting groove; and the fixing piece (4) is mounted in the positioning groove, is contractible in the axial direction, and comprises a first state in which a part of the fixing piece extends into the fixing groove in a conventional state and a second state in which the fixing piece leaves the fixing groove when being axially stressed. The adjustable transmission shaft assembly provided by the utility model can be adjusted by compressing the fixing piece, and can extend out to realize positioning after the fixing piece is in place, so that the adjustable transmission shaft assembly is relatively convenient.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to an adjustable transmission shaft assembly. Background Art

[0002] The automobile constant velocity joint drive shaft assembly is an important part of the automobile. The automobile constant velocity joint drive shaft assembly includes a universal joint with one end connected to the power output end of the automobile gearbox, and a universal joint with the other end connected to the power input part of the automobile wheel. In the existing automobile constant velocity joint drive shaft assembly, especially for different models of the same type of car, the drive assemblies of the two cars may have a slight difference in total length, while other components are exactly the same. However, the original car assembly is not suitable for the new car. At this time, it needs to be redeveloped and produced, and sample verification is required, which prolongs the product development time.

[0003] In order to solve this problem, Chinese patent publication number CN217519085U discloses an assembly with adjustable length, but the length adjustment thereof requires disassembly and assembly of fasteners, which is troublesome. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model provides an adjustable transmission shaft assembly, which mainly solves the problem that the conventional transmission shaft assembly is troublesome when adjusting the length.

[0005] The technical solution of the utility model is:

[0006] An adjustable transmission shaft assembly includes an intermediate shaft, one end of the intermediate shaft is connected to a first universal joint, and the other end is connected to a second universal joint, the first universal joint includes a housing, and further includes

[0007] A mounting groove, arranged in the axial direction of the intermediate shaft;

[0008] A first half shaft, part of which extends into the mounting groove, and part of which extends into the housing and is provided with a star-shaped sleeve;

[0009] A positioning groove, provided on the circumferential outer wall of the first semi-shaft;

[0010] A fixing groove, which is arranged in the circumference of the intermediate shaft and communicates with the mounting groove;

[0011] The fixing member is installed in the positioning groove and can be contracted in the axial direction, including a first state in which it partially extends into the fixing groove under normal conditions and a second state in which it leaves the fixing groove when subjected to axial force.

[0012] The fixing member comprises an elastic member and two sleeves. The elastic member is arranged between the two sleeves and is used to provide a force for a part of the sleeve to extend into the fixing groove.

[0013] The elastic member is a spring.

[0014] A retaining frame is arranged in the shell, a rolling ball is arranged on the retaining frame, a first groove matched with the rolling ball is arranged on the star-shaped sleeve, and a second groove matched with the rolling ball is arranged in the shell.

[0015] The inner wall of the first channel is tangent to the rolling ball.

[0016] The inner wall of the second channel is tangent to the rolling ball.

[0017] The circumferential outer wall of the intermediate shaft is provided with a plurality of the fixing grooves along the length direction.

[0018] The mounting groove passes through the intermediate shaft.

[0019] The beneficial effects of the utility model are as follows: the utility model provides an adjustable transmission shaft assembly, which can be adjusted by compressing the fixing part, and after being in place, it can be extended to realize positioning, which is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0021] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0022] Figure 3 It is a partial cross-sectional schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings: As shown in the figure, an adjustable transmission 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 connected to a second universal joint 3, the first universal joint includes a housing 21, and also includes

[0024] A mounting groove 11, provided in the axial direction of the intermediate shaft;

[0025] A first half shaft 22, part of which extends into the mounting groove, and part of which extends into the housing and is provided with a star sleeve 23;

[0026] A positioning groove 221, provided on the circumferential outer wall of the first semi-shaft;

[0027] A fixing groove 12, which is arranged in the circumference of the intermediate shaft and communicates with the mounting groove;

[0028] The fixing member 4 is installed in the positioning groove and can be retracted in the axial direction, including a first state in which it partially extends into the fixing groove under normal conditions and a second state in which it leaves the fixing groove when subjected to axial force.

[0029] The fixing member includes an elastic member 41 and two sleeves 42. The elastic member is disposed between the two sleeves and is used to provide a force for a portion of the sleeves to extend into the fixing groove.

[0030] The elastic member is a spring.

[0031] A retaining frame 24 is provided in the shell, a rolling ball 241 is provided on the retaining frame, a first groove matched with the rolling ball is provided on the star sleeve, and a second groove matched with the rolling ball is provided in the shell.

[0032] The inner wall of the first channel is tangent to the rolling ball.

[0033] The inner wall of the second channel is tangent to the rolling ball.

[0034] The circumferential outer wall of the intermediate shaft is provided with a plurality of the fixing grooves along the length direction.

[0035] The mounting groove passes through the intermediate shaft.

[0036] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. An adjustable transmission shaft assembly, comprising an intermediate shaft (1), one end of the intermediate shaft being connected to a first universal joint (2), and the other end being connected to a second universal joint (3), the first universal joint comprising a housing (21), characterized in that: Also includes A mounting groove (11) is arranged in the axial direction of the intermediate shaft; A first half shaft (22), part of which extends into the mounting groove, and part of which extends into the housing and is provided with a star-shaped sleeve (23); A positioning groove (221) is provided on the circumferential outer wall of the first semi-shaft; A fixing groove (12) extending through the circumference of the intermediate shaft and communicating with the mounting groove; The fixing member (4) is installed in the positioning groove and can be retracted in the axial direction, including a first state in which it partially extends into the fixing groove in a normal state and a second state in which it leaves the fixing groove when subjected to axial force.

2. The adjustable transmission shaft assembly according to claim 1, characterized in that: The fixing member comprises an elastic member (41) and two sleeves (42); the elastic member is arranged between the two sleeves and is used to provide a force for a portion of the sleeve to extend into the fixing groove.

3. The adjustable transmission shaft assembly according to claim 2, characterized in that: The elastic member is a spring.

4. The adjustable transmission shaft assembly according to claim 3, characterized in that: A retaining frame (24) is provided in the shell, a rolling ball (241) is provided on the retaining frame, a first groove matching the rolling ball is provided on the star sleeve, and a second groove matching the rolling ball is provided in the shell.

5. The adjustable transmission shaft assembly according to claim 4, characterized in that: The inner wall of the first channel is tangent to the rolling ball.

6. The adjustable transmission shaft assembly according to claim 5, characterized in that: The inner wall of the second channel is tangent to the rolling ball.

7. The adjustable transmission shaft assembly according to claim 6, characterized in that: The circumferential outer wall of the intermediate shaft is provided with a plurality of the fixing grooves along the length direction.

8. The adjustable transmission shaft assembly according to claim 7, characterized in that: The mounting groove passes through the intermediate shaft.

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