High-bearing transmission shaft assembly with supporting structure

Abstract

The high-bearing transmission shaft assembly with the supporting structure comprises a first transmission shaft and a second transmission shaft, a connecting shaft is arranged at the end, close to the second transmission shaft, of the first transmission shaft, a plurality of steel balls are installed on the outer wall of the connecting shaft around the axis, and the head ends of the steel balls are exposed out of the outer wall of the connecting shaft. The end, close to the first transmission shaft, of the second transmission shaft is provided with a connecting pipe matched with the connecting shaft, the connecting pipe is provided with a connecting cavity matched with the connecting shaft, and the inner wall of the connecting cavity is provided with roller paths corresponding to the parts, exposed out of the outer wall of the connecting shaft, of the steel balls. In the transmission process, power transmission between the first transmission shaft and the second transmission shaft mainly depends on the square shaft and the square groove located in the center, and meanwhile, the steel balls and the connecting pipes play a role in assisting power transmission and supporting, so that bearing of a thin pipe wall can be reduced, and high-bearing transmission is achieved; the first transmission shaft and the second transmission shaft can axially and relatively move and roll along the roller path through the steel balls, so that friction is reduced, and accurate guiding is performed.

Description

Technical Field

[0001] This utility model belongs to the field of automotive drive shaft technology, specifically relating to a high load-bearing drive shaft assembly with a support structure. Background Technology

[0002] The driveshaft is a crucial component of a car's transmission system, primarily responsible for transmitting power from the engine to the wheels, thus providing driving force. It works in conjunction with the gearbox and drive axle to transfer engine power to the wheels, propelling the car forward. The driveshaft consists of a shaft tube, a telescopic sleeve, and a universal joint. The telescopic sleeve automatically adjusts the distance between the gearbox and drive axle, while the universal joint ensures that the angle between the gearbox output shaft and the drive axle input shaft changes, achieving constant angular velocity transmission between the two shafts.

[0003] During the transmission process, the splined shaft of the transmission shaft cooperates with the splined tube of another transmission shaft to transmit power. The inner wall of the corresponding splined tube is provided with a spline groove that matches the splined shaft. During operation, the spline and spline groove play both guiding and force transmission roles. Since the splined tube needs to reserve a cavity that matches the splined shaft, the outer wall is relatively thin, and the power transmission is mainly in the thinner outer wall, making it difficult to bear large loads during force transmission. Utility Model Content

[0004] This utility model provides a high-load-bearing drive shaft assembly with a support structure. During transmission, the power transmission between the first and second drive shafts mainly relies on the square shaft and square groove located at the center. At the same time, steel balls and connecting pipes play an auxiliary supporting role in power transmission, thereby reducing the load on the thin-walled pipe and achieving high-load transmission. The first and second drive shafts will undergo axial relative movement, and the steel balls roll along the raceway to reduce friction and provide precise guidance, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-load-bearing drive shaft assembly with a support structure, comprising a first drive shaft and a second drive shaft, wherein a connecting shaft is provided at one end of the first drive shaft near the second drive shaft, and a plurality of steel balls are mounted around the axis of the connecting shaft on the outer wall of the connecting shaft, with the head ends of the steel balls protruding from the outer wall of the connecting shaft; a connecting pipe adapted to the connecting shaft is provided at one end of the second drive shaft near the first drive shaft, and the connecting pipe has a connecting cavity adapted to the connecting shaft, wherein the inner wall of the connecting cavity has a raceway corresponding to the portion of the steel balls protruding from the outer wall of the connecting shaft.

[0006] Preferably, the second drive shaft and the connecting shaft are coaxial.

[0007] Preferably, the steel balls are arranged in multiple rows along the axial direction outside the connecting shaft, and the multiple rows of steel balls are equally distributed around the connecting shaft, with the steel balls in each row being equally spaced.

[0008] Preferably, the portion of the steel ball protruding from the outer wall of the connecting shaft is less than half of its body, and the connecting shaft has a flow channel along the column of the steel balls, the flow channel penetrating all the steel balls in the same column.

[0009] Preferably, the portion of the steel ball protruding from the flow channel is half of its body.

[0010] Preferably, the end of the connecting shaft is provided with a square shaft, the square shaft is integrally formed with the connecting shaft, and the connecting cavity is provided with a square groove corresponding to the square shaft.

[0011] Preferably, the square shaft is arranged along the centerline of the connecting shaft, and the square groove and the connecting cavity are both arranged coaxially with the connecting pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. During the transmission process, the power transmission between the first and second transmission shafts mainly relies on the square shaft and square groove located at the center. At the same time, the steel balls and connecting pipes play an auxiliary supporting role in power transmission, thereby reducing the load on the thinner pipe walls and achieving high load-bearing transmission.

[0014] 2. During the transmission process, the first and second drive shafts will move axially relative to each other, and the steel balls will roll along the raceway to reduce friction and provide precise guidance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0016] Figure 2 for Figure 1 A magnified structural diagram at point A;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the connecting shaft, steel ball, and connecting pipe of this utility model;

[0018] Figure 4 This is a cross-sectional view of the connecting shaft and flow channel of this utility model.

[0019] Figure 5 This is a side view of the first transmission shaft, connecting shaft, steel ball, and square shaft of this utility model.

[0020] In the diagram: 1. First drive shaft; 2. Second drive shaft; 3. Connecting shaft; 4. Steel ball; 5. Connecting pipe; 6. Connecting cavity; 7. Raceway; 8. Flow channel; 9. Square shaft; 10. Square groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a high-load-bearing drive shaft assembly with a support structure, including a first drive shaft 1 and a second drive shaft 2. A connecting shaft 3 is provided at one end of the first drive shaft 1 near the second drive shaft 2. Multiple steel balls 4 are mounted around the axis of the connecting shaft 3 on its outer wall, with the heads of the steel balls 4 protruding from the outer wall of the connecting shaft 3. A connecting pipe 5, adapted to the connecting shaft 3, is provided at one end of the second drive shaft 2 near the first drive shaft 1. The connecting pipe 5 has a connecting cavity 6 adapted to the connecting shaft 3, and the inner wall of the connecting cavity 6 has a raceway 7 corresponding to the portion of the steel balls 4 protruding from the outer wall of the connecting shaft 3. During transmission, the connecting shaft 3 of the first drive shaft 1 and the connecting pipe 5 of the second drive shaft 2 cooperate to transmit power. The steel balls 4 and the raceway 7 act as both guides and power transmitters during operation. The steel balls 4 and the connecting pipe 5 assist in power transmission. During transmission, the first drive shaft 1 and the second drive shaft 2 will move relative to each other. The steel balls 4 roll along the raceway 7, reducing friction and providing precise guidance.

[0023] Specifically, the second drive shaft 2 and the connecting shaft 3 are coaxial; in this embodiment, the coaxial movement of the second drive shaft 2 and the connecting shaft 3 is realized during the power transmission process.

[0024] Specifically, the steel balls 4 are arranged in multiple rows along the axial direction outside the connecting shaft 3. The multiple rows of steel balls 4 are evenly distributed around the connecting shaft 3, and the steel balls 4 in each row are evenly spaced. In this embodiment, the uniform four-way force is achieved during guidance by multiple rows of equally distributed steel balls 4, so as to achieve precise guidance between the connecting shaft 3 and the connecting pipe 5.

[0025] Specifically, the portion of the steel ball 4 protruding from the outer wall of the connecting shaft 3 is less than half of its body. The connecting shaft 3 has a flow channel 8 along the column of the steel balls 4, and the flow channel 8 passes through all the steel balls 4 in the same column. In this embodiment, the steel ball 4 protruding less than half of its body does not completely block the flow channel 8, providing a heat dissipation channel for the inside and outside, which is conducive to cooling of the transmission part, reducing frictional heating, and extending service life.

[0026] Specifically, the portion of the steel ball 4 that protrudes from the flow channel 8 is half of its body; in this embodiment, the steel ball 4 is placed into the ball groove of the flow channel 8. The hemispherical groove that is compatible with the steel ball 4 facilitates placement, and the steel ball 4 is not easily detached from the ball groove.

[0027] Specifically, the end of the connecting shaft 3 is provided with a square shaft 9, which is integrally formed with the connecting shaft 3. The connecting cavity 6 is provided with a square groove 10 corresponding to the square shaft 9. In this embodiment, during the transmission process, the connecting shaft 3 of the first transmission shaft 1 and the connecting pipe 5 of the second transmission shaft 2 cooperate to transmit power. During this period, the square groove 10 and the square shaft 9 play both guiding and force transmission roles. The power transmission between the first transmission shaft 1 and the second transmission shaft 2 mainly relies on the square shaft 9 and the square groove 10 located at the center. At the same time, the steel ball 4 and the connecting pipe 5 play an auxiliary supporting role in power transmission, thereby reducing the load on the thinner pipe wall and achieving high load-bearing transmission.

[0028] Specifically, the square shaft 9 is arranged along the center line of the connecting shaft 3, and the square groove 10 and the connecting cavity 6 are both arranged coaxially with the connecting pipe 5; in this embodiment, the coaxial transmission motion of the square shaft 9 and the connecting shaft 3 is realized.

[0029] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0030] Working principle: During the transmission process, the connecting shaft 3 of the first transmission shaft 1 and the connecting pipe 5 of the second transmission shaft 2 cooperate to transmit power. During this process, the square groove 10 and the square shaft 9 serve both guiding and force transmission functions. At the same time, the steel ball 4 and the raceway 7 serve both guiding and power transmission functions. The power transmission between the first transmission shaft 1 and the second transmission shaft 2 mainly relies on the square shaft 9 and the square groove 10 located at the center. Meanwhile, the steel ball 4 and the connecting pipe 5 play an auxiliary role in power transmission, thereby reducing the load on the thinner pipe wall and achieving high load-bearing transmission. During the transmission process, the first transmission shaft 1 and the second transmission shaft 2 will undergo relative movement. The steel ball 4 rolls along the raceway 7, reducing friction and providing precise guidance.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-load-bearing drive shaft assembly with a support structure, comprising a first drive shaft (1) and a second drive shaft (2), characterized in that, The first drive shaft (1) has a connecting shaft (3) at one end near the second drive shaft (2). The outer wall of the connecting shaft (3) is equipped with a plurality of steel balls (4) around the axis. The head end of the steel balls (4) protrudes from the outer wall of the connecting shaft (3). The second drive shaft (2) has a connecting tube (5) adapted to the connecting shaft (3) at one end near the first drive shaft (1). The connecting tube (5) has a connecting cavity (6) adapted to the connecting shaft (3). The inner wall of the connecting cavity (6) has a raceway (7) corresponding to the part of the steel balls (4) protruding from the outer wall of the connecting shaft (3).

2. The high-load-bearing drive shaft assembly with a support structure according to claim 1, characterized in that, The second transmission shaft (2) and the connecting shaft (3) are coaxial.

3. The high-load-bearing drive shaft assembly with a support structure according to claim 1, characterized in that, The steel balls (4) are arranged in multiple rows along the axial direction outside the connecting shaft (3). The multiple rows of steel balls (4) are evenly distributed around the connecting shaft (3), and the steel balls (4) in each row are evenly spaced.

4. The high-load-bearing drive shaft assembly with a support structure according to claim 3, characterized in that, The portion of the steel ball (4) protruding from the outer wall of the connecting shaft (3) is less than half of its body. The connecting shaft (3) has a flow channel (8) along the column of the steel balls (4), and the flow channel (8) passes through all the steel balls (4) in the same column.

5. A high-load-bearing drive shaft assembly with a support structure according to claim 4, characterized in that, The portion of the steel ball (4) that protrudes from the flow channel (8) is half of its body.

6. The high-load-bearing drive shaft assembly with a support structure according to claim 1, characterized in that, The end of the connecting shaft (3) is provided with a square shaft (9), which is integrally formed with the connecting shaft (3). The connecting cavity (6) is provided with a square groove (10) corresponding to the square shaft (9).

7. A high-load-bearing drive shaft assembly with a support structure according to claim 6, characterized in that, The square shaft (9) is arranged along the center line of the connecting shaft (3), and the square groove (10) and the connecting cavity (6) are both arranged along the center line of the connecting pipe (5).

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