A modular automotive drive shaft assembly

Abstract

A modular automotive drive shaft assembly. It primarily addresses the problem that conventional automotive drive shaft assemblies require machining the drive shaft onto a universal joint. Its key feature is that the intermediate housing comprises a detachably connected first housing (3) and a second housing (4). The first housing houses a first universal joint structure, and one drive shaft is connected to the first universal joint structure. The second housing houses a second universal joint structure, and another drive shaft is connected to the second universal joint structure. This invention provides a modular automotive drive shaft assembly that eliminates the half-shaft on the universal joint, resulting in a more compact overall structure. Furthermore, the detachable housing structure facilitates modular replacement.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a modular automotive drive shaft assembly. Background Technology

[0002] As shown in publication number CN107269725A, a conventional automotive drive shaft assembly generally consists of an intermediate shaft, universal joints at both ends of the intermediate shaft, and a drive shaft mounted on the universal joints. This requires machining the drive shaft on the universal joints, and the assembly is relatively difficult, requiring highly skilled workers. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a modular automotive drive shaft assembly, which mainly solves the problem that conventional automotive drive shaft assemblies require machining the drive shaft on a universal joint.

[0004] The technical solution of this utility model is as follows: A modular automotive drive shaft assembly includes a center mount and at least two drive shafts, the center mount comprising... A first housing and a second housing are detachably connected. The first housing contains a first universal joint structure, and a drive shaft is connected to the first universal joint structure. The second housing contains a second universal joint structure, and another drive shaft is connected to the second universal joint structure.

[0005] The first universal joint structure includes a channel in the first housing, a star-shaped sleeve on the outer wall of the drive shaft, a retainer between the star-shaped sleeve and the inner wall of the first housing, and a ball on the retainer. The ball engages with the channel and the ball engages with the star-shaped sleeve.

[0006] The second universal joint structure includes a three-pin bracket and a second channel provided on the inner wall of the second housing. The three-pin bracket includes a journal, and a ball ring is provided on the journal. The ball ring cooperates with the second channel.

[0007] The first housing is provided with a mounting groove, and the second housing is provided with a plug. The plug is disposed in the mounting groove and is installed together by fasteners.

[0008] The cross-section of the insert is T-shaped.

[0009] The first housing is also provided with a mounting hole, which communicates with the mounting groove for the fastener to pass through.

[0010] The drive shaft includes a first drive shaft and a second drive shaft, wherein the first drive shaft and the second drive shaft are coaxially arranged.

[0011] It also includes a dust cover, one end of which is connected to the outer wall of the first housing, and the other end is connected to the circumferential outer wall of the first drive shaft.

[0012] The beneficial effects of this utility model are: This utility model provides a modular automotive drive shaft assembly, which eliminates the half shaft on the universal joint, making the overall structure more compact, and it is equipped with a detachable housing structure, which facilitates modular replacement. Attached Figure Description

[0013] Figure 1 This is a cross-sectional schematic diagram of one embodiment of the present invention.

[0014] Figure 2 for Figure 1 Enlarged diagram of point A in the middle. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings. A modular automotive drive shaft assembly includes a central base 1 and at least two drive shafts 2. The central base includes a detachably connected first housing 3 and a second housing 4. The first housing contains a first universal joint structure, and one of the drive shafts is connected to the first universal joint structure. The second housing contains a second universal joint structure, and the other drive shaft is connected to the second universal joint structure. The first housing and the second housing can be connected by screws. When the universal joint structure type needs to be changed, the entire assembly can be replaced. This structure does not require a half-shaft on the first housing for transmission; transmission is achieved directly through the drive shaft. Specifically, a spline can be provided on the drive shaft for transmission. Its connection method with the wheel hub is the same as before. The universal joint structure can be a ball-cage universal joint structure or a three-ball-pin universal joint structure. The assembly adopts a modular design, and each component can be replaced independently, facilitating maintenance, extending service life, and significantly reducing maintenance costs, thereby improving overall economy. In this embodiment, as shown in the figure, the first universal joint structure includes a channel 50 disposed in the first housing, a star-shaped sleeve 51 disposed on the outer wall of the drive shaft, a retainer 52 disposed between the star-shaped sleeve and the inner wall of the first housing, and a ball bearing 53 disposed on the retainer. The ball bearing engages with the channel and the ball bearing engages with the star-shaped sleeve. The first universal joint is a ball-cage type universal joint structure, which is existing technology. It includes a channel disposed in the first housing, and then a star-shaped sleeve is disposed on a drive shaft, which, together with the retainer and the ball bearing, realizes torque transmission.

[0016] In this embodiment, as shown in the figure, the second universal joint structure includes a three-pin bracket 61 and a second groove provided on the inner wall of the second housing. The three-pin bracket includes a journal, and a ball ring 62 is provided on the journal. The ball ring mates with the second groove. The second universal joint structure adopts a three-ball-pin type structure, specifically a three-pin bracket mounted on another drive shaft, with a ball ring on the three-pin bracket to mate with the second groove in the second housing. Existing three-ball-pin universal joints can be referenced.

[0017] In this embodiment, as shown in the figure, the first housing is provided with a mounting groove 31, and the second housing is provided with a plug 41. The plug is disposed in the mounting groove and installed together by fasteners 42. The mounting groove is provided through the first housing, and the second housing only needs to be lowered down and then installed together by fasteners.

[0018] In this embodiment, as shown in the figure, the cross-section of the insert is T-shaped, resulting in a more stable installation.

[0019] In this embodiment, as shown in the figure, the first housing is further provided with a mounting hole 32, which communicates with the mounting groove for the fastener to pass through. This facilitates assembly.

[0020] In this embodiment, as shown in the figure, the transmission shaft includes a first transmission shaft and a second transmission shaft, and the first transmission shaft and the second transmission shaft are coaxially arranged.

[0021] In this embodiment, as shown in the figure, a dust cover 7 is also included. One end of the dust cover is connected to the outer wall of the first housing, and the other end is connected to the circumferential outer wall of the first drive shaft. This prevents foreign objects from entering the housing. The dust cover can be installed using clamps, which is the same as conventional assemblies.

[0022] 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.

[0023] 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.

[0024] 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 modular automotive drive shaft assembly, comprising a central mounting base (1) and at least two drive shafts (2), characterized in that: The intermediate seat includes A first housing (3) and a second housing (4) are detachably connected. The first housing is provided with a first universal joint structure, and a drive shaft is connected to the first universal joint structure. The second housing contains a second universal joint structure, and another drive shaft is connected to the second universal joint structure.

2. A modular automotive drive shaft assembly according to claim 1, characterized in that: The first universal joint structure includes a channel (50) provided in the first housing, a star-shaped sleeve (51) provided on the outer wall of the drive shaft, a retainer (52) provided between the star-shaped sleeve and the inner wall of the first housing, and a ball (53) provided on the retainer. The ball cooperates with the channel and the ball cooperates with the star-shaped sleeve.

3. A modular automotive drive shaft assembly according to claim 1, characterized in that: The second universal joint structure includes a three-pin bracket (61) and a second channel provided on the inner wall of the second housing. The three-pin bracket includes a journal, and a ball ring (62) is provided on the journal. The ball ring cooperates with the second channel.

4. A modular automotive drive shaft assembly according to any one of claims 1-3, characterized in that: The first housing is provided with a mounting groove (31), and the second housing is provided with a plug (41). The plug is located in the mounting groove and is installed together by fasteners (42).

5. A modular automotive drive shaft assembly according to claim 4, characterized in that: The cross-section of the insert is T-shaped.

6. A modular automotive drive shaft assembly according to claim 5, characterized in that: The first housing is also provided with a mounting hole (32), which communicates with the mounting groove for the fastener to pass through.

7. A modular automotive drive shaft assembly according to claim 1, characterized in that: The drive shaft includes a first drive shaft and a second drive shaft, wherein the first drive shaft and the second drive shaft are coaxially arranged.

8. A modular automotive drive shaft assembly according to claim 7, characterized in that: It also includes a dust cover (7), one end of which is connected to the outer wall of the first housing, and the other end is connected to the circumferential outer wall of the first drive shaft.

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