A lightweight drive shaft assembly that eliminates axial gap

Abstract

The utility model provides a kind of lightweight transmission shaft assembly eliminating axial gap. Mainly solve the problem that the present intermediate shaft is matched with star-shaped cover through baffle ring and exists axial gap. Its characterized in that: it further includes convex ring (12), is located in the circumferential outer wall of the intermediate shaft;Elastic member (14), is installed on the intermediate shaft, plastic sleeve (15), is located in the circumferential outside of the intermediate shaft, the rear end surface of the elastic member and convex ring contact, the front end surface of the elastic member is pressed on the plastic sleeve, and the plastic sleeve contacts the star-shaped cover. The utility model provides a kind of lightweight transmission shaft assembly eliminating axial gap, and by the cooperation of elastic member and plastic member, axial gap can be eliminated.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a lightweight drive shaft assembly that eliminates axial clearance. Background Technology

[0002] Currently, most drive shaft assemblies on the market use wire retaining rings to connect the fixed end half shaft and the star sleeve. In the axial direction, they all have clearance fits and therefore have different sizes of axial clearance. The sliding end housing and the spline connection with the forklift also use wire retaining rings, which also have axial clearance. During vehicle operation, the drive shaft will make noise due to the combined effect of axial clearance, affecting the overall performance. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a lightweight drive shaft assembly that eliminates axial clearance, mainly solving the problem of axial clearance in the current intermediate shaft that uses a retaining ring to cooperate with the star sleeve.

[0004] The technical solution of this utility model is as follows: A lightweight driveshaft assembly eliminating axial backlash includes an intermediate shaft, one end of which is provided with a first universal joint, and the other end with a second universal joint. The first universal joint includes a housing, and a star-shaped sleeve is mounted on the intermediate shaft extending into the housing. A convex ring is provided on the circumferential outer wall of the intermediate shaft; The elastic element is mounted on the intermediate shaft. A plastic sleeve is disposed on the circumferential outer side of the intermediate shaft. The rear end face of the elastic element contacts the convex ring, and the front end face of the elastic element presses against the plastic sleeve. The plastic sleeve contacts the star-shaped sleeve.

[0005] The elastic element is a disc spring.

[0006] The plastic sleeve is made of nylon.

[0007] The second universal joint includes a second housing, and a second elastic element is provided inside the second housing. One end of the second elastic element contacts the inner wall of the second housing, and the other end contacts the axial outer wall of the intermediate shaft.

[0008] The second elastic element is a spring.

[0009] It also includes an end cap disposed inside the second housing, the end cap having a groove, and the outer wall of the intermediate shaft having a protrusion that mates with the groove.

[0010] The end cap is provided with a surrounding plate, and the second elastic element is disposed inside the surrounding plate at one end.

[0011] The second housing has an opening groove on its circumferential wall.

[0012] It also includes a sleeve, which is mounted to the circumferential outer wall of the second housing and covers the opening slot.

[0013] The beneficial effects of this utility model are: This utility model provides a lightweight transmission shaft assembly that eliminates axial clearance. Through the cooperation of elastic and plastic parts, axial clearance can be eliminated. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0015] Figure 2 This is a partial cross-sectional view of one embodiment of the present invention.

[0016] Figure 3 for Figure 1 Enlarged diagram of point A in the middle. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings. A lightweight drive shaft assembly for eliminating axial clearance includes an intermediate shaft 1. One end of the intermediate shaft is provided with a first universal joint 2, and the other end is provided with a second universal joint 4. The first universal joint includes a housing 21. A star-shaped sleeve 11 is installed on the intermediate shaft extending into the housing. It also includes a convex ring 12 disposed on the circumferential outer wall of the intermediate shaft. An elastic element 14 is installed on the intermediate shaft. A plastic sleeve 15 is disposed on the circumferential outer side of the intermediate shaft. The rear end face of the elastic element contacts the convex ring, and the front end face of the elastic element abuts against the plastic sleeve. The plastic sleeve contacts the star-shaped sleeve. The plastic sleeve can be a nylon sleeve. Through the high elasticity of the disc spring and the plasticity of the nylon material, axial clearance can be eliminated.

[0018] In this embodiment, as shown in the figure, the elastic element is a disc spring.

[0019] In this embodiment, as shown in the figure, the plastic sleeve is made of nylon.

[0020] In this embodiment, as shown in the figure, the second universal joint includes a second housing 41, within which a second elastic element 42 is provided. One end of the second elastic element contacts the inner wall of the second housing, and the other end contacts the axial outer wall of the intermediate shaft. An additional second elastic element (compression spring) is provided within the inner cavity. One end of the compression spring rests against the bottom of the inner spline sleeve, and the other end rests against the end of the intermediate shaft. The thrust of the compression spring is directed to push the second housing axially outward, i.e., towards the differential (right side of the figure). Elastic clamping is achieved using the axial force generated by the compression spring inside the universal joint.

[0021] In this embodiment, as shown in the figure, the second elastic element is a spring.

[0022] In this embodiment, as shown in the figure, an end cap 44 is also included, disposed within the second housing. The end cap has a groove, and the outer wall of the intermediate shaft has a protrusion 16 that mates with the groove. The overall structure is more stable.

[0023] In this embodiment, as shown in the figure, the end cap is provided with a surrounding plate 441, and the second elastic element is disposed inside the surrounding plate at one end. This prevents one part of the spring from coming out.

[0024] In this embodiment, as shown in the figure, an opening groove 45 is provided on the circumferential wall of the second housing. This reduces the weight of the housing.

[0025] In this embodiment, as shown in the figure, a sleeve 7 is also included. The sleeve is installed on the circumferential outer wall of the second housing and covers the opening groove. The combination of an "inner cavity opening type" and an "outer shell type" achieves lightweight design.

[0026] 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.

[0027] 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.

[0028] 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 lightweight drive shaft assembly with eliminated axial clearance, comprising an intermediate shaft (1), wherein one end of the intermediate shaft is provided with a first universal joint (2) and the other end is provided with a second universal joint (4), wherein the first universal joint includes a housing (21), and a star-shaped sleeve (11) is installed on the intermediate shaft extending into the housing, characterized in that: Also includes A convex ring (12) is provided on the circumferential outer wall of the intermediate shaft; The elastic element (14) is mounted on the intermediate shaft. A plastic sleeve (15) is provided on the circumferential outer side of the intermediate shaft. The rear end face of the elastic element contacts the convex ring, and the front end face of the elastic element presses against the plastic sleeve. The plastic sleeve contacts the star-shaped sleeve.

2. A lightweight drive shaft assembly with eliminated axial backlash according to claim 1, characterized in that: The elastic element is a disc spring.

3. A lightweight drive shaft assembly with eliminated axial backlash according to claim 1, characterized in that: The plastic sleeve is made of nylon.

4. A lightweight drive shaft assembly for eliminating axial backlash according to any one of claims 1-3, characterized in that: The second universal joint includes a second housing (41), and a second elastic element (42) is provided inside the second housing. One end of the second elastic element contacts the inner wall of the second housing, and the other end contacts the axial outer wall of the intermediate shaft.

5. A lightweight drive shaft assembly with eliminated axial backlash according to claim 4, characterized in that: The second elastic element is a spring.

6. A lightweight drive shaft assembly with eliminated axial backlash according to claim 5, characterized in that: It also includes an end cap (44) disposed in the second housing, the end cap having a groove, and the outer wall of the intermediate shaft having a protrusion (16) that mates with the groove.

7. A lightweight drive shaft assembly with eliminated axial backlash according to claim 6, characterized in that: The end cap is provided with a surrounding plate (441), and the second elastic element is located inside the surrounding plate at one end.

8. A lightweight drive shaft assembly with eliminated axial backlash according to claim 4, characterized in that: The second housing has an opening groove (45) on its circumferential wall.

9. A lightweight drive shaft assembly with eliminated axial backlash according to claim 8, characterized in that: It also includes a sleeve (7), which is installed on the circumferential outer wall of the second housing and covers the opening groove.

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