Detachable lightweight transmission shaft assembly

Abstract

The utility model discloses a detachable and light-weight transmission shaft assembly. The driving shaft assembly mainly solves the problems that most shaft bodies of a traditional driving shaft assembly are not detachable, and the maintenance cost is high. The universal joint is characterized in that the first shaft comprises a cylinder body (11) and a first end cover (12) which are detachably connected, a shaft body (121) is integrally arranged on the first end cover, and the shaft body is matched with the first universal joint; and part of the second shaft extends into the cylinder body and is in sliding fit with the cylinder body in the axial direction. According to the detachable and light-weight transmission shaft assembly, the middle shaft part is of a hollow, detachable and sliding structure, and the detachable and light-weight transmission shaft assembly is detachable and high in maintenance economical efficiency.

Description

Technical Field

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

[0002] The driveshaft is an important component in the automotive transmission system that transmits power. Its function, together with the gearbox and drive axle, is to transmit the engine's power to the wheels, thus generating driving force for the car.

[0003] As shown in Chinese Patent Publication No. CN219549414U, there is currently a type of drive shaft assembly with a sliding intermediate shaft, whose shaft body is mostly non-removable, resulting in high maintenance costs. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a detachable and lightweight drive shaft assembly, which mainly solves the problem that the shaft of most traditional drive shaft assemblies is not detachable and has a high maintenance cost.

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

[0006] A detachable, lightweight drive shaft assembly includes a first shaft and a second shaft that slide together. One end of the first shaft is connected to a first universal joint, and one end of the second shaft is connected to a second universal joint. The first shaft includes a detachably connected cylindrical body and a first end cap. The first end cap is integrally provided with a shaft body that engages with the first universal joint. A portion of the second shaft extends into the cylindrical body and slides together with the cylindrical body in the axial direction.

[0007] The first end cap is provided with a first mounting hole, and the cylinder is provided with a second mounting hole opposite to the first mounting hole. The first mounting hole and the second mounting hole are installed by fasteners.

[0008] The shaft is a hollow tubular structure.

[0009] The second shaft is a hollow tubular structure.

[0010] The shaft body is provided with a through groove in the axial direction, and also includes at least two caps, which are engaged with the inner wall of the through groove and cover the through groove.

[0011] It also includes a second end cap that is detachably connected to the cylinder, the second end cap having a through groove for the second shaft to pass through.

[0012] The inner wall of the through groove is provided with a sealing ring that cooperates with the second shaft seal.

[0013] A retainer is provided between the second shaft extending into the cylinder and the inner wall of the cylinder. A rolling element is provided on the retainer. The rolling element rolls with the inner wall of the cylinder and rolls with the outer wall of the second shaft.

[0014] The rolling element is a steel ball.

[0015] The first end cap has a boss on one side, and the outer circumferential wall of the boss has a key that is keyed to the inner wall of the cylinder.

[0016] The beneficial effects of this utility model are: This utility model provides a detachable and lightweight transmission shaft assembly, in which the intermediate shaft adopts a hollow, detachable, and sliding structure, which is detachable and economical to maintain. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of the first embodiment of the present invention.

[0018] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0019] Figure 3 for Figure 1 Enlarged diagram of point B in the middle. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. A detachable and lightweight transmission shaft assembly includes a first shaft 1 and a second shaft 2 that are slidably engaged. One end of the first shaft is connected to a first universal joint 3, and one end of the second shaft is connected to a second universal joint 4. The first shaft includes a detachably connected cylindrical body 11 and a first end cap 12. The first end cap is integrally provided with a shaft body 121, which engages with the first universal joint. A portion of the second shaft extends into the cylindrical body and slides axially with the cylindrical body. The sliding fit between the first and second shafts can be achieved using Chinese Patent Publication No. CN219549414U. The first shaft itself can include a detachably connected shaft body and a cylinder body. A groove is provided inside the cylinder body for sliding fit with the second shaft. The shaft body is used for fit with a universal joint, specifically by fitting with a star-shaped sleeve via a spline. Alternatively, the structure of CN219549414U can be used. A cage and balls are provided outside the star-shaped sleeve, which are existing technologies and will not be described in detail here. In addition, a groove can be provided on the shaft body, and a second groove can be provided on the inner wall of the star-shaped sleeve, along with a cage. Balls are provided on the cage, and the ball spline structure fits with the second groove, i.e., the ball rolls into fit with the groove and the second groove.

[0021] In this embodiment, as shown in the figure, the first end cap is provided with a first mounting hole 122, and the cylinder is provided with a second mounting hole opposite to the first mounting hole. The first mounting hole and the second mounting hole are installed using fasteners. Installation can be achieved by fixing the first mounting hole and the second mounting hole with bolts or the like.

[0022] In this embodiment, as shown in the figure, the shaft is a hollow tubular structure. The overall weight is relatively light.

[0023] In this embodiment, as shown in the figure, the second shaft is a hollow tubular structure. The overall weight is relatively light.

[0024] In this embodiment, as shown in the figure, the shaft body is provided with a through groove in the axial direction, and also includes at least two caps 123. The caps are engaged with the inner wall of the through groove and cover the through groove to prevent foreign objects from entering the cavity.

[0025] In this embodiment, as shown in the figure, a second end cap 13 is detachably connected to the cylinder body, and the second end cap is provided with a through groove for the second shaft to pass through.

[0026] In this embodiment, as shown in the figure, the inner wall of the through groove is provided with a sealing ring 132 that seals with the second shaft. This increases the sealing effect and prevents grease leakage.

[0027] In this embodiment, as shown in the figure, a retainer 5 is provided between the second shaft extending into the cylinder and the inner wall of the cylinder. A rolling element 51 is provided on the retainer. The rolling element rolls with the inner wall of the cylinder and rolls with the outer wall of the second shaft.

[0028] In this embodiment, as shown in the figure, the rolling element is a steel ball.

[0029] In this embodiment, as shown in the figure, a boss 125 is provided on one side of the first end cap, and a key 126 is provided on the circumferential outer wall of the boss for key transmission with the inner wall of the cylinder. This increases the efficiency of torque transmission.

[0030] 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.

[0031] 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.

[0032] 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 detachable and light-weight transmission shaft assembly, comprising a slip-fit first shaft (1) and a second shaft (2), one end of the first shaft being connected with a first universal joint (3), one end of the second shaft being connected with a second universal joint (4), characterized in that: the first shaft comprises a detachable cylinder (11) and a first end cover (12), the first end cover being integrally provided with a shaft body (121) which is matched with the first universal joint; part of the second shaft extends into the cylinder and is axially slip-fit with the cylinder. The first end cover is provided with a first mounting hole (122), and the cylinder is provided with a second mounting hole which is oppositely arranged with the first mounting hole, and the first mounting hole and the second mounting hole are mounted by fasteners.

2. A detachable, lightweight propeller shaft assembly according to claim 1, wherein: The shaft body is a hollow tubular structure.

3. A detachable, lightweight propeller shaft assembly according to claim 1, wherein: The second shaft is a hollow tubular structure.

4. A detachable, lightweight propeller shaft assembly as described in claim 1, wherein: The shaft body is axially provided with a through slot, and further comprises at least two cover caps (123) which are clamped and matched with the inner wall of the through slot and cover the through slot.

5. A detachable, lightweight propeller shaft assembly as described in claim 1, wherein: Further comprising a second end cover (13) which is detachably connected with the cylinder, the second end cover being provided with a through slot for the second shaft to pass through.

6. A detachable, lightweight propeller shaft assembly as described in claim 1, wherein: The inner wall of the through slot is provided with a sealing ring (132) which is sealingly matched with the second shaft.

7. A detachable, lightweight propeller shaft assembly according to claim 6, characterized in that: A retainer (5) is arranged between the second shaft which extends into the cylinder and the inner wall of the cylinder, the retainer being provided with rolling elements (51) which are rolling matched with the inner wall of the cylinder and rolling matched with the outer wall of the second shaft.

8. A detachable, lightweight propeller shaft assembly as described in claim 1, wherein: The rolling elements are steel balls.

9. A detachable, lightweight propeller shaft assembly according to claim 8, characterized in that: One side of the first end cover is provided with a boss (125), and the circumferential outer wall of the boss is provided with a key (126) which is key-driven with the inner wall of the cylinder.

10. A detachable, lightweight propeller shaft assembly as set forth in any of claims 1-9, characterized in that: ​

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