A heat dissipation type drive shaft assembly

Abstract

The utility model provides a heat dissipation type drive shaft assembly, which relates to the technical field of drive shaft assembly, including a drive shaft body, both ends of the drive shaft body are connected to a ball cage assembly, and a mounting seat is arranged on the top of the ball cage assembly. The utility model can quickly discharge the high-temperature hot air generated by friction inside the ball cage assembly through the heat dissipation hole, and at the same time, the dustproof net can be fixed above the heat dissipation hole by using the mounting bolt, and the friction force can be increased by cooperating with the gasket to prevent the mounting bolt from loosening, and then the dustproof net is used to prevent dust from entering the ball cage assembly from the heat dissipation hole, and the ball cage assembly is protected. The arc plate can be squeezed by the countersunk bolt to squeeze the heat-conducting silicon chip tightly on the outside of the ball cage assembly, and then the heat-conducting silicon chip is used to quickly conduct the high temperature inside the ball cage assembly outward, so as to improve the heat dissipation efficiency of the ball cage assembly, prevent the ball cage assembly from being damaged due to high temperature, and then extend its service life, avoid safety hazards, and meet actual use needs.

Description

Technical Field

[0001] The utility model relates to the technical field of drive shaft assemblies, in particular to a heat dissipation type drive shaft assembly. Background Art

[0002] The drive shaft assembly is an important part of the chassis. Its function is to transmit the power output by the engine to the wheel side through the gearbox to drive the wheel to move. One end of the drive shaft assembly is connected to the differential, and the other end is connected to the wheel side. Due to the functional requirements, the drive shaft needs to have both angular and axial telescopic sliding functions. The change in angle can adapt to the arrangement that the center of the differential and the center of the wheel are not in the same horizontal plane and the steering of the wheel side. The axial telescopic sliding ensures the normal operation of the drive shaft when encountering uneven roads.

[0003] When the existing drive shaft assembly is in use, usually both ends of it are connected to ball cages, and then connected to the differential and wheels respectively through the ball cages and splines. When the ball cage is in use, high temperature will be generated inside due to friction. Long-term high temperature will easily cause damage to the ball cage. The existing drive shaft assembly lacks an effective heat dissipation mechanism, which in turn shortens the service life of the ball cage, affects the normal use of the car, poses a major safety hazard, and is difficult to meet usage requirements. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that when the ball cage is in use, the interior will generate high temperature due to friction, and long-term high temperature will easily cause the ball cage to be damaged, and the existing drive shaft assembly lacks an effective heat dissipation mechanism, which in turn shortens the service life of the ball cage, affects the normal use of the car, poses a major safety hazard, and is difficult to meet the use requirements. A heat dissipation drive shaft assembly is proposed to solve the problem that

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a heat-dissipating drive shaft assembly, comprising a drive shaft body, both ends of the drive shaft body are connected to a ball cage assembly, a mounting seat is arranged on the top of the ball cage assembly, a plurality of heat-dissipating holes are opened through the top of the mounting seat, a dust-proof net is arranged on the top of the mounting seat, the dust-proof net is arranged directly above the heat-dissipating holes, mounting bolts are installed at the four corners of the top of the dust-proof net, a gasket is sleeved on the outer side of the mounting bolts, arc plates are symmetrically arranged at both ends of the mounting seat, the arc plates are fixedly mounted on the mounting seat by two countersunk bolts, a hinge is connected to the close end of the two arc plates, a plurality of heat-conducting silicon sheets are arranged on the inner side of the arc plates, and the heat-conducting silicon sheets are tightly fitted to the outer side of the ball cage assembly.

[0006] Preferably, a dustproof shell is provided at one end of the ball cage assembly, a sealing ring is provided on the outer side of one end of the dustproof shell, a plurality of first fastening bolts are provided on the outer side of the sealing ring, the first fastening bolts are movably passed through the sealing ring and connected to the first fastening bolts, a connecting shaft ring is inserted on the inner side of the sealing ring, a plurality of connecting bolts are provided at one end of the connecting shaft ring, one end of the connecting bolts is movably passed through the connecting shaft ring and connected to the sealing ring, and the connecting shaft ring is fixedly mounted on the outer side of the drive shaft body.

[0007] Preferably, the ball cage assembly includes a star-shaped sleeve, a plurality of raceways are arranged on the outer side of the star-shaped sleeve, a steel ball is arranged on the inner side of the raceways, a retaining frame is arranged on the outer side of the star-shaped sleeve, a plurality of rolling grooves are opened through the outer side of the retaining frame, the steel balls are arranged on the inner side of the rolling grooves, a spherical shell is arranged on the outer side of the retaining frame, and the mounting seat is fixedly installed on the top of the spherical shell.

[0008] Preferably, one end of a single spherical shell is connected to a first spline, and a first retaining ring is sleeved on the outer side of the first spline.

[0009] Preferably, a second snap ring is sleeved on the outer side of the first spline, and the second snap ring is arranged at an end away from the spherical shell.

[0010] Preferably, one end of the other spherical shell is connected to a second spline, and a third retaining ring is sleeved on the outer side of the second spline.

[0011] Preferably, a limiting collar is sleeved on the outer side of the second spline, and the limiting collar is arranged at an end away from the spherical shell.

[0012] Preferably, a second fastening bolt is installed at one end of the second spline, and the second fastening bolt is tightly fitted on one side of the limiting collar.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the heat dissipation holes can be used to quickly discharge the high-temperature hot air generated by friction inside the ball cage assembly. At the same time, the dustproof net can be fixed above the heat dissipation holes by using mounting bolts, and the friction force can be increased by using gaskets to prevent the mounting bolts from loosening. The dustproof net can prevent dust from entering the inside of the ball cage assembly through the heat dissipation holes, thereby protecting the ball cage assembly. The countersunk bolts can be used to squeeze the heat-conducting silicon chip tightly onto the outside of the ball cage assembly, and the heat-conducting silicon chip can be used to quickly conduct the high temperature inside the ball cage assembly to the outside, thereby improving the heat dissipation efficiency of the ball cage assembly, preventing the ball cage assembly from being damaged due to high temperature, thereby extending its service life, avoiding safety hazards, and meeting actual use needs.

[0015] 2. In the utility model, the dustproof shell can prevent dust from entering the interior of the ball cage assembly, thereby maintaining the stable operation of the ball cage assembly. The sealing ring can be used to seal the connection between the dustproof shell and the connecting shaft ring. At the same time, in conjunction with the first fastening bolt and the connecting shaft ring, the connection strength can be effectively improved, and moisture or dust can be prevented from penetrating into the ball cage assembly through the gap between the dustproof shell and the connecting shaft ring, thereby extending the service life of the drive shaft assembly and improving the connection strength and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural schematic diagram of a heat dissipation type drive shaft assembly is proposed for the utility model;

[0017] Figure 2 A partial structural schematic diagram of a heat dissipation type drive shaft assembly is provided for the utility model;

[0018] Figure 3 A schematic diagram of the heat-conducting silicon chip structure of a heat-dissipating drive shaft assembly is provided for the utility model;

[0019] Figure 4 A partial structural schematic diagram of a heat dissipation type drive shaft assembly is proposed for the utility model;

[0020] Figure 5 A cross-sectional view of a dust cover of a heat dissipation type drive shaft assembly is provided for the utility model;

[0021] Figure 6 The utility model provides a schematic diagram of the star sleeve structure of a heat dissipation type drive shaft assembly.

[0022] Legend: 1. Drive shaft body; 2. Heat dissipation hole; 3. Dustproof net; 4. Mounting bolt; 5. Gasket; 6. Arc plate; 7. Countersunk bolt; 8. Hinge; 9. Thermal conductive silicon wafer; 10. Dustproof shell; 11. Sealing ring; 12. First fastening bolt; 13. Connecting shaft ring; 14. Connecting bolt; 15. Star sleeve; 16. Steel ball; 17. Retaining frame; 18. Rolling groove; 19. Spherical shell; 20. First retaining ring; 21. First spline; 22. Second retaining ring; 23. Third retaining ring; 24. Second spline; 25. Limiting shaft ring; 26. Second fastening bolt. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] Example 1: Figure 1-Figure 6 As shown, the utility model provides a technical solution: a heat-dissipating drive shaft assembly, comprising a drive shaft body 1, both ends of the drive shaft body 1 are connected to ball cage assemblies, a mounting seat is arranged on the top of the ball cage assembly, a plurality of heat-dissipating holes 2 are opened through the top of the mounting seat, a dust-proof net 3 is arranged on the top of the mounting seat, the dust-proof net 3 is arranged directly above the heat-dissipating holes 2, mounting bolts 4 are installed at the four corners of the top of the dust-proof net 3, a gasket 5 is sleeved on the outer side of the mounting bolt 4, arc plates 6 are symmetrically arranged at both ends of the mounting seat, the arc plates 6 are fixedly installed on the mounting seat by two countersunk bolts 7, a hinge 8 is connected to the close end of the two arc plates 6, a plurality of heat-conducting silicon chips 9 are arranged on the inner side of the arc plates 6, and the heat-conducting silicon chips 9 are tightly fitted to the outer side of the ball cage assembly.

[0026] In this embodiment, the high-temperature hot air generated by friction inside the ball cage assembly can be quickly discharged outward through the heat dissipation holes 2, and the dustproof net 3 can be fixed above the heat dissipation holes 2 by using the mounting bolts 4, and the friction force can be increased by cooperating with the gasket 5 to prevent the mounting bolts 4 from loosening, thereby preventing dust from entering the inside of the ball cage assembly through the heat dissipation holes 2, thereby protecting the ball cage assembly, and the countersunk bolts 7 can make the arc plate 6 squeeze the thermal conductive silicon chip 9 to fit tightly against the outside of the ball cage assembly, and then use the thermal conductive silicon chip 9 to quickly conduct the high temperature inside the ball cage assembly outward, thereby improving the heat dissipation efficiency of the ball cage assembly, preventing the ball cage assembly from being damaged due to high temperature, thereby extending its service life, avoiding safety hazards, and meeting actual usage needs.

[0027] Example 2: Figure 1-Figure 6As shown, a dust cover 10 is provided at one end of the ball cage assembly, a sealing ring 11 is provided on the outer side of one end of the dust cover 10, a plurality of first fastening bolts 12 are provided on the outer side of the sealing ring 11, the first fastening bolts 12 are movably penetrated through the sealing ring 11 and connected with the first fastening bolts 12, a connecting shaft ring 13 is inserted on the inner side of the sealing ring 11, a plurality of connecting bolts 14 are provided at one end of the connecting shaft ring 13, one end of the connecting bolts 14 is movably penetrated through the connecting shaft ring 13 and connected with the sealing ring 11, the connecting shaft ring 13 is fixedly installed on the outer side of the driving shaft body 1, the ball cage assembly includes a star sleeve 15, a plurality of raceways are provided on the outer side of the star sleeve 15, a steel ball 16 is provided on the inner side of the raceway, a retainer 17 is provided on the outer side of the star sleeve 15, a plurality of rolling bearings are provided on the outer side of the retainer 17 Notch 18, the steel ball 16 is arranged on the inner side of the rolling notch 18, a spherical shell 19 is arranged on the outer side of the retaining frame 17, and the mounting seat is fixedly installed on the top of the spherical shell 19. One end of the single spherical shell 19 is connected with a first spline 21, and the outer side of the first spline 21 is sleeved with a first retaining ring 20, and the outer side of the first spline 21 is sleeved with a second retaining ring 22, and the second retaining ring 22 is arranged at the end away from the spherical shell 19, and one end of the other spherical shell 19 is connected with a second spline 24, and the outer side of the second spline 24 is sleeved with a third retaining ring 23, and the outer side of the second spline 24 is sleeved with a limiting shaft ring 25, and the limiting shaft ring 25 is arranged at the end away from the spherical shell 19, and one end of the second spline 24 is installed with a second fastening bolt 26, and the second fastening bolt 26 is tightly fitted on one side of the limiting shaft ring 25.

[0028] In this embodiment, the dustproof shell 10 can prevent dust from entering the interior of the ball cage assembly, thereby maintaining the stability of the operation of the ball cage assembly. The sealing ring 11 can be used to seal the connection between the dustproof shell 10 and the connecting shaft ring 13. At the same time, the first fastening bolt 12 and the connecting shaft ring 13 can be used to effectively improve the connection strength, and at the same time, moisture or dust can be prevented from penetrating into the ball cage assembly from the gap between the dustproof shell 10 and the connecting shaft ring 13, thereby extending the service life of the drive shaft assembly and improving the connection strength and stability. The ball cage assembly is mainly composed of a star sleeve 15, a steel ball 16, a retaining frame 17, a rolling notch 18 and a spherical shell 19. When the car turns, The steel ball 16 is guided by the retaining frame 17 so that it rolls and slides in the raceways on the spherical shell 19 and the rolling groove 18 to adapt to the changes in the transmission shaft angle and ensure the continuous and stable transmission of power. The drive shaft assembly can be connected to the differential through the first spline 21, and the first snap ring 20 and the second snap ring 22 can maintain the stability of the connection. The second spline 24 is inserted into the automobile wheel hub bearing and the second fastening bolt 26 is tightened to push the limit shaft ring 25 to fit one side of the automobile wheel hub, thereby connecting the drive shaft body 1 to the wheel. At the same time, the third snap ring 23 can also maintain the stability of the connection.

[0029] The working principle of this embodiment is as follows: when in use, first insert one end of the dust cover 10 into the sealing ring 11, and screw the first fastening bolt 12 to connect and fix the two, then sleeve the dust cover 10 on the outside of the drive shaft body 1, push the dust cover 10, so that the sealing ring 11 is against the connecting shaft ring 13, and the connecting shaft ring 13 is inserted into the sealing ring 11, and then screw the connecting bolt 14 to connect and fix the dust cover 10, the sealing ring 11 and the connecting shaft ring 13, and then respectively through the first spline 21 and the second spline 24, The drive shaft body 1 is connected to the differential and the wheel. Finally, when the car turns, the steel ball 16 is guided by the retaining frame 17 to roll and slide in the raceways on the spherical shell 19 and the rolling grooves 18 to adapt to the changes in the transmission shaft angle. At the same time, when high temperature is generated due to friction in the spherical shell 19, the high-temperature gas flows upward and is discharged from the heat dissipation holes 2, and the thermally conductive silicon chip 9 will quickly conduct the high temperature inside the spherical shell 19, thereby improving the heat dissipation efficiency of the ball cage assembly, thereby completing the use of the heat dissipation type drive shaft assembly.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A heat dissipation drive shaft assembly, comprising a drive shaft body (1), characterized in that: Both ends of the drive shaft body (1) are connected to a ball cage assembly, a mounting seat is arranged on the top of the ball cage assembly, a plurality of heat dissipation holes (2) are opened through the top of the mounting seat, a dust screen (3) is arranged on the top of the mounting seat, the dust screen (3) is arranged directly above the heat dissipation holes (2), four corners of the top of the dust screen (3) are installed with mounting bolts (4), the outer side of the mounting bolts (4) is sleeved with a gasket (5), arc plates (6) are symmetrically arranged at both ends of the mounting seat, the arc plates (6) are fixedly installed on the mounting seat by two countersunk bolts (7), the two arc plates (6) are connected to the ends thereof close to each other with a hinge (8), a plurality of heat-conducting silicon sheets (9) are arranged on the inner side of the arc plates (6), and the heat-conducting silicon sheets (9) are tightly fitted on the outer side of the ball cage assembly.

2. The heat dissipation drive shaft assembly according to claim 1, characterized in that: A dust cover (10) is provided at one end of the ball cage assembly, a sealing ring (11) is provided on the outer side of one end of the dust cover (10), a plurality of first fastening bolts (12) are provided on the outer side of the sealing ring (11), the first fastening bolts (12) are movably inserted through the sealing ring (11) and are connected to the first fastening bolts (12), a connecting shaft ring (13) is inserted into the inner side of the sealing ring (11), a plurality of connecting bolts (14) are provided at one end of the connecting shaft ring (13), one end of the connecting bolts (14) is movably inserted through the connecting shaft ring (13) and is connected to the sealing ring (11), and the connecting shaft ring (13) is fixedly mounted on the outer side of the drive shaft body (1).

3. The heat dissipation drive shaft assembly according to claim 2, characterized in that: The ball cage assembly comprises a star-shaped sleeve (15), a plurality of raceways are arranged on the outer side of the star-shaped sleeve (15), a steel ball (16) is arranged on the inner side of the raceway, a retaining frame (17) is arranged on the outer side of the star-shaped sleeve (15), a plurality of rolling grooves (18) are penetrated through the outer side of the retaining frame (17), the steel ball (16) is arranged on the inner side of the rolling grooves (18), a spherical shell (19) is arranged on the outer side of the retaining frame (17), and the mounting seat is fixedly mounted on the top of the spherical shell (19).

4. The heat dissipation drive shaft assembly according to claim 3, characterized in that: One end of a single spherical shell (19) is connected to a first spline (21), and a first clamping ring (20) is sleeved on the outer side of the first spline (21).

5. The heat dissipation drive shaft assembly according to claim 4, characterized in that: A second snap ring (22) is sleeved on the outer side of the first spline (21), and the second snap ring (22) is arranged at an end away from the spherical shell (19).

6. The heat dissipation type drive shaft assembly according to claim 5, characterized in that: One end of the other spherical shell (19) is connected to a second spline (24), and a third clamping ring (23) is sleeved on the outer side of the second spline (24).

7. The heat dissipation type drive shaft assembly according to claim 6, characterized in that: A limiting collar (25) is sleeved on the outer side of the second spline (24), and the limiting collar (25) is arranged at an end away from the spherical shell (19).

8. The heat dissipation drive shaft assembly according to claim 7, characterized in that: A second fastening bolt (26) is installed at one end of the second spline (24), and the second fastening bolt (26) is tightly fitted on one side of the limiting shaft ring (25).

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