Automobile driving shaft

Abstract

The utility model discloses an automobile driving shaft, which relates to the field of automobile accessories and comprises a driving shaft body, an intermediate shaft arranged at one end of the driving shaft body, a ball cage arranged at one end of the intermediate shaft and a dust-proof sleeve arranged outside the driving shaft body, a second fastening cap is fixed at one end of the dust-proof sleeve, and a first fastening cap is fixed at the other end of the dust-proof sleeve. A sliding groove is formed in the driving shaft body, a sliding sleeve is connected outside the driving shaft body in a sliding mode, a sliding block is connected in the sliding groove in a sliding mode, and the sliding block is connected with the sliding sleeve. The inserting block is inserted into the inserting groove and the sliding sleeve for limiting, then under the action of the threads, the first fastening cap firstly penetrates through the sliding sleeve, then under the action of the threads, the second fastening cap is gradually screwed to complete connection between the sliding sleeve and the second fastening cap, and then under the action of the threads, the first fastening cap and the ball cage are screwed to complete connection between the sliding sleeve and the second fastening cap. And meanwhile, the sliding block drives the sliding sleeve to translate to adapt to dustproof sleeves with different lengths.

Description

Technical Field

[0001] This utility model relates to the automotive field, specifically to an automotive drive shaft. Background Technology

[0002] With economic progress, cars have become a very common mode of transportation for people, so the number of cars is gradually increasing. In the production process of cars, car parts need to be classified and produced before assembly, among which the drive shaft is a particularly important component.

[0003] The patent number CN214775375U describes an automotive drive shaft in which a dust cover is fixed to one end of an outer spherical shell via a first fixing device. The first fixing device includes an outer ring and an inner ring. One end of the dust cover is clamped between the inner and outer rings. A screw and a nut work together to press the outer and inner rings together, thereby improving the fixing firmness of the dust cover and reducing the loosening of the dust cover.

[0004] However, the dust boots in the drive shafts of modern cars will age over time and need to be replaced. But each drive shaft model is different, and the compatibility of the dust boots is low. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an automotive drive shaft to solve the technical problem of low compatibility of dust covers for different drive shaft models.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automotive drive shaft, comprising a drive shaft body, an intermediate shaft at one end of the drive shaft body, a ball joint at one end of the intermediate shaft, a dust cover outside the drive shaft body, a second fastening cap fixed at one end of the dust cover, a first fastening cap fixed at the other end of the dust cover, a sliding groove provided inside the drive shaft body, a sliding sleeve slidably connected outside the drive shaft body, a sliding block slidably connected inside the sliding groove, and the sliding block connected to the sliding sleeve.

[0007] The present invention is further configured such that an installation ring is fixedly attached to the outside of the drive shaft body, an insertion block is fixed to one end of the installation ring, and a slot that cooperates with the insertion block is provided at one end of the sliding sleeve.

[0008] The present invention is further configured such that a limiting groove is provided inside the sliding sleeve, and a limiting block that cooperates with the limiting groove is fixed on the sliding block.

[0009] The present invention is further configured such that the first fastening cap and the ball cage, and the second fastening cap and the sliding sleeve are all detachably connected by threaded rotation.

[0010] The present invention is further configured such that the cross-section of the dust cover is a corrugated structure, and a spring ring is installed in the folds inside the dust cover.

[0011] The present invention is further provided with a rubber sealing ring at the contact position between the inner wall of the limiting groove and the sliding sleeve and the drive shaft body.

[0012] The present invention is further configured such that a sealing gasket is fixed inside the sliding groove, and there are two sliding grooves, which are symmetrical to each other.

[0013] The present invention is further configured such that both the sliding sleeve and the outer threads of the ball cage are covered with raw rubber tape.

[0014] In summary, the present invention has the following main advantages:

[0015] 1. This utility model uses a sliding block and a sliding groove to cooperate with each other. When the sliding block moves to one side of the sliding groove, the sliding sleeve moves to one side. At this time, the insert block is inserted into the slot, and the sliding sleeve is limited. Then, under the action of the thread, the first fastening cap is first passed through the sliding sleeve. Then, under the action of the thread, the second fastening cap is gradually tightened to complete the connection between the sliding sleeve and the second fastening cap. Then, under the action of the thread, the connection between the first fastening cap and the ball cage is tightened. At the same time, the sliding block drives the sliding sleeve to move horizontally. This can adapt to dust covers of different lengths and sizes, thereby increasing the adaptability of the dust cover. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is a side view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the sliding sleeve of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the dust cover of this utility model.

[0020] In the diagram: 1. Drive shaft body; 2. Intermediate shaft; 3. Ball cage; 4. First fastening cap; 5. Dust cover; 6. Second fastening cap; 7. Sliding sleeve; 8. Sliding groove; 9. Insert block; 10. Sliding block; 11. Slot; 12. Limiting block; 13. Limiting groove; 14. Spring ring; 15. Mounting ring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] The embodiments of this utility model will be described below based on its overall structure.

[0023] A type of automotive drive shaft, such as Figures 1-4 As shown, it includes a drive shaft body 1, an intermediate shaft 2 at one end of the drive shaft body 1, a ball cage 3 at one end of the intermediate shaft 2, a dust cover 5 outside the drive shaft body 1, a second fastening cap 6 fixed at one end of the dust cover 5, a first fastening cap 4 fixed at the other end of the dust cover 5, a sliding groove 8 inside the drive shaft body 1, a sliding sleeve 7 slidably connected outside the drive shaft body 1, a sliding block 10 slidably connected inside the sliding groove 8, and the sliding block 10 connected to the sliding sleeve 7.

[0024] The sliding block 10 engages with the sliding groove 8, sliding within the groove 8. The sliding block 10 drives the sliding sleeve 7 to move, allowing the distance between the sliding sleeve 7 and the ball cage 3 to be adjusted to accommodate dust covers 5 of different sizes. It should be noted that the first fastening cap 4 and the ball cage 3, and the second fastening cap 6 and the sliding sleeve 7 are all detachably connected via threads. These threads facilitate the removal and replacement of the first fastening cap 4 and the second fastening cap 6.

[0025] Please see Figure 1 and Figure 3 An installation ring 15 is fixed to the outside of the drive shaft body 1. An insert block 9 is fixed to one end of the installation ring 15. A slot 11 that cooperates with the insert block 9 is opened at one end of the sliding sleeve 7. A limit groove 13 is opened inside the sliding sleeve 7. A limit block 12 that cooperates with the limit groove 13 is fixed on the sliding block 10. It can be understood that the limit groove 13 and the limit block 12 cooperate with each other, so that the sliding sleeve 7 can rotate outside the drive shaft body 1, thereby relatively turning the first fastening cap 4 and the second fastening cap 6, reducing the deformation of the dust cover 5 and thus preventing its damage. When the insert block 9 is inserted into the slot 11, it can limit the sliding sleeve 7 and prevent it from rotating. When the second fastening cap 6 can be rotated, the connection between the second fastening cap 6 and the sliding sleeve 7 is realized.

[0026] Please see Figures 1-4The dust cover 5 has a corrugated cross-section. Spring rings 14 are installed in the inner folds of the dust cover 5. A rubber sealing ring is provided at the contact point between the inner wall of the sliding sleeve 7 and the drive shaft body 1. Sealing gaskets are fixed in the limiting groove 13 and the sliding groove 8. There are two sliding grooves 8, symmetrically opposite each other. Raw rubber tape is wrapped around the outer threads of both the sliding sleeve 7 and the ball cage 3. It should be noted that the spring rings 14 provide resilience, allowing the dust cover 5 to quickly rebound when deformed. The rubber sealing rings seal the inner wall of the sliding sleeve 7 against the drive shaft body 1, preventing dust from entering. The sealing gaskets seal the sliding groove 8 against the sliding block 10. The raw rubber tape increases the sealing at the threaded connections, preventing dust from entering. Working principle: Pull the sliding sleeve 7 to one side, at which time the insert block 9 is inserted into the slot 11, the sliding sleeve 7 is limited, and then, under the action of the thread, the first fastening cap 4 is first passed through the sliding sleeve 7. Then, under the action of the thread, the second fastening cap 6 is gradually turned to complete the connection between the sliding sleeve 7 and the second fastening cap 6. Then, under the action of the thread, the connection between the first fastening cap 4 and the ball cage 3 is turned to complete the replacement of the dust cover 5.

[0027] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A drive shaft for automobiles, comprising a drive shaft body (1), an intermediate shaft (2) at one end of the drive shaft body (1), a ball joint (3) at one end of the intermediate shaft (2), and a dust cover (5) outside the drive shaft body (1), characterized in that: One end of the dust cover (5) is fixed with a second fastening cap (6), and the other end of the dust cover (5) is fixed with a first fastening cap (4). A sliding groove (8) is provided inside the drive shaft body (1). A sliding sleeve (7) is slidably connected to the outside of the drive shaft body (1). A sliding block (10) is slidably connected inside the sliding groove (8). The sliding block (10) is connected to the sliding sleeve (7).

2. The automotive drive shaft according to claim 1, characterized in that: The drive shaft body (1) is fixed with an installation ring (15), one end of which is fixed with a plug (9), and one end of the sliding sleeve (7) is provided with a slot (11) that cooperates with the plug (9).

3. The automotive drive shaft according to claim 1, characterized in that: A limiting groove (13) is provided inside the sliding sleeve (7), and a limiting block (12) that cooperates with the limiting groove (13) is fixed on the sliding block (10).

4. The automotive drive shaft according to claim 1, characterized in that: The first fastening cap (4) and the ball cage (3) and the second fastening cap (6) and the sliding sleeve (7) are all detachably connected by threaded rotation.

5. The automotive drive shaft according to claim 1, characterized in that: The cross-section of the dust cover (5) is corrugated, and a spring ring (14) is installed in the folds inside the dust cover (5).

6. The automotive drive shaft according to claim 1, characterized in that: A rubber sealing ring is provided at the contact position between the inner wall of the sliding sleeve (7) and the main shaft body (1).

7. The automotive drive shaft according to claim 3, characterized in that: The limiting groove (13) and the sliding groove (8) are fixed with sealing gaskets. There are two sliding grooves (8), and the two sliding grooves (8) are symmetrical.

8. The automotive drive shaft according to claim 4, characterized in that: Both the sliding sleeve (7) and the ball cage (3) have raw rubber tape wrapped around their outer threads.

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