Dustproof driving shaft assembly

Abstract

The utility model provides a dustproof type driving shaft assembly, which relates to the technical field of driving shaft assemblies, and comprises a shaft rod, a besides-star wheel is arranged on the outer surface of the shaft rod, a heat dissipation mechanism is arranged on the outer surface of the shaft rod, a dustproof cover is arranged on the outer surface of the shaft rod, a lower arc-shaped pressing plate is arranged at the bottom of the dustproof cover, and a lower arc-shaped pressing plate is arranged on the lower arc-shaped pressing plate. And the top of the lower arc-shaped pressing plate is rotationally connected with a screw rod. When the dust cover is installed on the shaft rod, the upper arc-shaped pressing plate and the lower arc-shaped pressing plate are arranged outside the dust cover in a sleeved mode, the lower arc-shaped pressing plate is placed at the bottom of the dust cover, then the screw rod is rotated, and due to the fact that the upper arc-shaped pressing plate is limited by the limiting rod, the upper arc-shaped pressing plate can be clamped under the action of the threads. When the dust cover is pressed, the upper arc-shaped pressing plate is driven to move downwards and get close to the lower arc-shaped pressing plate, at the moment, the upper arc-shaped pressing plate can extrude in the direction of the shaft rod, and therefore the purpose that the dust cover is pressed and fixed to the shaft rod is achieved, and recycling of the upper arc-shaped pressing plate and the lower arc-shaped pressing plate is facilitated.

Description

Technical Field

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

[0002] The drive shaft is a mechanism that connects two shafts whose axes do not overlap and transmits motion at the same angular velocity. Its function is to transmit the power of the engine from the transmission to the driving wheels of the car, meet the requirements of the outer end angle of the vehicle's drive shaft, and thus smoothly and reliably transmit the power of the engine to the wheels. The ball cage is a node connecting the two directional shafts, including the inner and outer star wheels. The outer star wheel is connected to the wheel hub through the external spline, and the inner star wheel is connected to the prime mover through the drive shaft. The inner star wheel is sleeved in the outer star wheel.

[0003] For example, a shockproof and dustproof constant velocity joint drive shaft assembly with Chinese application number CN201821074731.0 has the following description: "The utility model discloses a shockproof and dustproof constant velocity joint drive shaft assembly, including a housing component and a functional component. The housing component includes a rotating shaft, a dust cover, a first ring buckle, a first sleeve, a second ring buckle, a second sleeve, a gear and a bolt. The dust cover is provided above the outer wall of the rotating shaft, and the dust cover is fixedly connected to the rotating shaft. The third baffle and spring provided in the rotating box of the constant velocity joint drive shaft can reduce the vibration caused by excessive speed of the car and uneven road surface through the spring, so that the wear effect of the vibration on the internal components of the constant velocity joint drive shaft is reduced. Under the action of the spring, the third baffle can keep the gap between the internal components of the constant velocity joint drive shaft within a reasonable range, reducing the wear of the internal components of the constant velocity joint drive shaft. The setting of the electrostatic chain can transmit the static electricity generated by the constant velocity joint drive shaft to the earth, so that the constant velocity joint drive shaft is not easy to absorb dust."

[0004] In the prior art, the third baffle can keep the gap between the internal components of the constant velocity joint drive shaft within a reasonable range under the action of the spring, thereby reducing the wear of the internal components of the constant velocity joint drive shaft. The setting of the electrostatic chain can transmit the static electricity generated by the constant velocity joint drive shaft to the earth, so that the constant velocity joint drive shaft has the advantage of not being easy to absorb dust. However, in actual use, it is found that the dust cover is installed on the rotating shaft through a ring buckle, but the ring buckle is easy to break or damage during disassembly and assembly, and the ring buckle needs to be replaced, which increases the maintenance difficulty and cost of the dust cover. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that the dust cover is installed on the rotating shaft through a ring buckle, but the ring buckle is easily broken or damaged during disassembly and assembly, and the ring buckle needs to be replaced, thereby increasing the maintenance difficulty and cost of the dust cover, and a dustproof drive shaft assembly is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dustproof drive shaft assembly, including a shaft rod, an outer star wheel is provided on the outer surface of the shaft rod, a heat dissipation mechanism is provided on the outer surface of the shaft rod, a dust cover is installed on the outer surface of the shaft rod, a lower arc pressure plate is provided on the bottom of the dust cover, a screw is rotatably connected to the top of the lower arc pressure plate, a limiting rod is fixedly connected to the top of the lower arc pressure plate, an upper arc pressure plate is sleeved on the outer surface of the screw rod and the limiting rod, and the upper arc pressure plate and the lower arc pressure plate are both adapted to the dust cover.

[0007] Preferably, the heat dissipation mechanism comprises a gear ring, which is fixedly sleeved on the outer surface of the shaft rod, and the outer surface of the shaft rod is provided with a circular ring, and a side wall of the circular ring is provided with an annular groove.

[0008] Preferably, teeth are fixedly connected to the inner surface of the circular ring, and the teeth are meshingly connected to the gear ring, and fan blades are fixedly connected to the outer surface of the circular ring.

[0009] Preferably, a rectangular frame is provided on the outer surface of the circular ring, the inner side of the rectangular frame is fixedly connected to a limiting frame, one side of the limiting frame is fixedly connected to a limiting plate, and the limiting plate is stuck in the annular groove.

[0010] Preferably, a connecting plate is fixedly connected to the top of the rectangular frame, and a fixing plate is fixedly connected to the top of the connecting plate.

[0011] Preferably, a bottom vehicle fixing hole is provided at the top of the fixing plate, and an anti-slip plate is fixedly connected to the top end of the limiting rod.

[0012] Preferably, a rotating cap is installed at the top end of the screw, and the outer surface of the rotating cap is designed to be anti-slip.

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

[0014] 1. In the utility model, when the dust cover is installed on the shaft, the upper arc pressure plate and the lower arc pressure plate are sleeved on the outside of the dust cover, so that the lower arc pressure plate is placed at the bottom of the dust cover, and then the screw is rotated. Since the limit rod limits the upper arc pressure plate, the upper arc pressure plate is driven to move downward and close to the lower arc pressure plate under the action of the thread. At this time, the upper arc pressure plate can be squeezed in the direction of the shaft, thereby achieving the purpose of pressing and fixing the dust cover on the shaft, which is convenient for the recycling of the upper arc pressure plate and the lower arc pressure plate.

[0015] 2. In the utility model, by providing a heat dissipation mechanism, when the outer planet wheels run for a long time in a state where the angle between their respective axes is relatively large, the heat generated by the outer planet wheels increases. When the shaft rotates, it will drive the gear ring to rotate. Since the teeth are meshed and connected with the gear ring, the circular ring is driven to rotate, so that the fan blades rotate synchronously to generate airflow, and the airflow blows toward the dust cover and the outer planet wheels, so that the heat generated at the dust cover and the outer planet wheels is accelerated to be blown away, thereby avoiding the poor heat dissipation effect of the drive shaft assembly and affecting the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of the main structure of a dustproof drive shaft assembly is provided for the utility model;

[0017] Figure 2 A three-dimensional diagram of a dust cover in a dustproof drive shaft assembly is provided for the utility model;

[0018] Figure 3 A partial structural stereogram of a dustproof drive shaft assembly is provided for the utility model;

[0019] Figure 4 The utility model provides a structural stereogram of a rectangular frame in a dustproof drive shaft assembly.

[0020] Legend: 1. Shaft; 2. Outer star wheel; 3. Heat dissipation mechanism; 301. Gear ring; 302. Circular ring; 303. Annular groove; 304. Tooth; 305. Fan blade; 4. Dust cover; 5. Lower arc pressure plate; 6. Screw; 7. Limit rod; 8. Upper arc pressure plate; 9. Rectangular frame; 10. Limit frame; 11. Limit plate; 12. Connecting plate; 13. Fixing plate; 14. Fixing hole on the bottom of the vehicle; 15. Anti-slip plate; 16. Rotating cap. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] Example 1: Figure 1 - Figure 4As shown, the utility model provides a dustproof drive shaft assembly, including a shaft rod 1, an outer star wheel 2 is provided on the outer surface of the shaft rod 1, a heat dissipation mechanism 3 is provided on the outer surface of the shaft rod 1, a dust cover 4 is installed on the outer surface of the shaft rod 1, a lower arc pressure plate 5 is provided at the bottom of the dust cover 4, a screw rod 6 is rotatably connected to the top of the lower arc pressure plate 5, a limiting rod 7 is fixedly connected to the top of the lower arc pressure plate 5, an upper arc pressure plate 8 is sleeved on the outer surfaces of the screw rod 6 and the limiting rod 7, and the upper arc pressure plate 8 and the lower arc pressure plate 5 are both adapted to the dust cover 4.

[0024] The effect achieved by the entire embodiment 1 is that when the dust cover 4 is installed on the shaft rod 1, the upper arc pressure plate 8 and the lower arc pressure plate 5 are sleeved on the outside of the dust cover 4, so that the lower arc pressure plate 5 is placed at the bottom of the dust cover 4, and then the screw 6 is rotated. Since the limit rod 7 limits the upper arc pressure plate 8, the upper arc pressure plate 8 is driven to move downward and close to the lower arc pressure plate 5 under the action of the thread. The upper arc pressure plate 8 and the lower arc pressure plate 5 are adapted to the dust cover 4. At this time, the upper arc pressure plate 8 can be squeezed in the direction of the shaft rod 1, thereby achieving the purpose of pressing and fixing the dust cover 4 on the shaft rod 1, which is convenient for the recycling of the upper arc pressure plate 8 and the lower arc pressure plate 5.

[0025] Example 2: Figure 1 - Figure 4 As shown, the heat dissipation mechanism 3 includes a gear ring 301, which is fixedly sleeved on the outer surface of the shaft rod 1. A circular ring 302 is provided on the outer surface of the shaft rod 1. An annular groove 303 is provided on the side wall of the circular ring 302. A tooth 304 is fixedly connected to the inner surface of the circular ring 302. The tooth 304 is meshed with the gear ring 301. A fan blade 305 is fixedly connected to the outer surface of the circular ring 302. A rectangular frame 9 is provided on the outer surface of the circular ring 302. A limiting frame 10 is fixedly connected to the inner side of the rectangular frame 9. A limiting piece 11 is fixedly connected to one side of the limiting frame 10. The limiting piece 11 is stuck in the annular groove 303. A connecting plate 12 is fixedly connected to the top of the rectangular frame 9. A fixing plate 13 is fixedly connected to the top of the connecting plate 12. A bottom fixing hole 14 is provided on the top of the fixing plate 13. An anti-slip plate 15 is fixedly connected to the top of the limiting rod 7. A rotating cap 16 is installed on the top of the screw rod 6. The outer surface of the rotating cap 16 is designed to be anti-slip.

[0026] The effect achieved by the entire embodiment 2 is that, by providing the heat dissipation mechanism 3, when the outer planetary wheel 2 runs in a state where the angle between their respective axes is relatively large for a long time, the heat generated by the outer planetary wheel 2 increases, and when the shaft 1 rotates, it will drive the gear ring 301 to rotate. Since the teeth 304 are meshed and connected with the gear ring 301, the circular ring 302 is driven to rotate, so that the fan blades 305 rotate synchronously to generate airflow, and the airflow blows to the dust cover 4 and the outer planetary wheel 2, so that the heat generated at the dust cover 4 and the outer planetary wheel 2 is accelerated to be blown away, thereby avoiding that the heat dissipation effect of the drive shaft assembly is poor and the service life is affected. When the circular ring 302 rotates, it will always be limited by the limiting plate 11, so that the circular ring 302 will not deviate and the heat dissipation process will not be interrupted. Then, by providing the bottom fixing hole 14, it is convenient to fix the rectangular frame 9, and the anti-slip plate 15 provided has a limiting effect on the upper arc pressure plate 8. Then, by providing the rotating cap 16, it is convenient for the operator to rotate the screw 6.

[0027] Working principle: When in use, when the dust cover 4 is installed on the shaft 1, the upper arc pressure plate 8 and the lower arc pressure plate 5 are sleeved on the outside of the dust cover 4, so that the lower arc pressure plate 5 is placed at the bottom of the dust cover 4, and then the rotating cap 16 is rotated, so that the rotating cap 16 drives the screw 6 to rotate. Since the limit rod 7 limits the upper arc pressure plate 8, the upper arc pressure plate 8 is driven to move downward and close to the lower arc pressure plate 5 under the action of the thread. At this time, the upper arc pressure plate 8 can be squeezed in the direction of the shaft 1, so that the dust cover 4 is pressed and fixed on the shaft 1, and at the same time, the two ends of the shaft 1 are respectively connected to the gearbox and the wheel. The rectangular frame 9 is fixed through the fixing hole 14 at the bottom of the vehicle. When the vehicle is started, the shaft 1 rotates, which will drive the gear ring 301 to rotate. Since the teeth 304 are meshed and connected with the gear ring 301, the circular ring 302 is driven to rotate, so that the fan blades 305 rotate synchronously to generate airflow. The airflow blows toward the dust cover 4 and the outer star wheel 2, so that the heat generated by the dust cover 4 and the outer star wheel 2 is accelerated to be blown away, avoiding the poor heat dissipation effect of the drive shaft assembly and affecting the service life. At the same time, when the circular ring 302 rotates, it will always be limited by the limiting piece 11, so that the circular ring 302 will not deviate, and the heat dissipation process will not be interrupted.

[0028] 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 dustproof drive shaft assembly, comprising a shaft (1), characterized in that: The outer surface of the shaft (1) is provided with an outer star wheel (2), the outer surface of the shaft (1) is provided with a heat dissipation mechanism (3), the outer surface of the shaft (1) is installed with a dust cover (4), the bottom of the dust cover (4) is provided with a lower arc pressure plate (5), the top of the lower arc pressure plate (5) is rotatably connected to a screw rod (6), the top of the lower arc pressure plate (5) is fixedly connected to a limit rod (7), the outer surfaces of the screw rod (6) and the limit rod (7) are sleeved with an upper arc pressure plate (8), and the upper arc pressure plate (8) and the lower arc pressure plate (5) are both compatible with the dust cover (4).

2. A dustproof drive shaft assembly according to claim 1, characterized in that: The heat dissipation mechanism (3) comprises a gear ring (301), the gear ring (301) is fixedly sleeved on the outer surface of the shaft (1), the outer surface of the shaft (1) is provided with a circular ring (302), and the side wall of the circular ring (302) is provided with an annular groove (303).

3. A dustproof drive shaft assembly according to claim 2, characterized in that: The inner surface of the circular ring (302) is fixedly connected with teeth (304), and the teeth (304) are meshingly connected with the gear ring (301), and the outer surface of the circular ring (302) is fixedly connected with blades (305).

4. The dustproof drive shaft assembly according to claim 2, characterized in that: The outer surface of the circular ring (302) is provided with a rectangular frame (9), the inner side of the rectangular frame (9) is fixedly connected to a limiting frame (10), one side of the limiting frame (10) is fixedly connected to a limiting plate (11), and the limiting plate (11) is clamped in the annular groove (303).

5. The dustproof drive shaft assembly according to claim 4, characterized in that: A connecting plate (12) is fixedly connected to the top of the rectangular frame (9), and a fixing plate (13) is fixedly connected to the top of the connecting plate (12).

6. The dustproof drive shaft assembly according to claim 5, characterized in that: The top of the fixing plate (13) is provided with a vehicle bottom fixing hole (14), and the top end of the limiting rod (7) is fixedly connected with an anti-slip plate (15).

7. The dustproof drive shaft assembly according to claim 1, characterized in that: A rotating cap (16) is installed at the top end of the screw rod (6), and the outer surface of the rotating cap (16) is designed to be anti-slip.

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