High reliability automobile stabilizer bar ball joint

Abstract

The utility model discloses a high reliability automobile stabilizer bar ball head, specifically related to the technical field of automobile chassis parts, including stabilizer bar and the ball head seat of symmetrical installation at stabilizer bar both ends, the surface of ball head seat is provided with spherical recess, the inside rotatablely inlaid ball head pin of spherical recess, one end of ball head pin is fixedly arranged with connecting rod, the inside of ball head seat is provided with wear -resisting subassembly, and wear -resisting subassembly includes annular oil storage groove of setting up in the ball head seat, and the inside wall of annular oil storage groove is annular and is provided with a plurality of through -holes, and the inside of annular oil storage groove is fixedly arranged with adsorption oil cotton. The utility model discloses in wear -resisting coating formation coating adds lubrication double protection, and the abrasion rate is greatly reduced, and moreover pre -tight spring pushes pre -tight gasket and abuts against connecting rod end, and continuously provides pre -tight force, and offsets the risk of component loosening caused by vehicle vibration.

Description

Technical Field

[0001] This utility model relates to the field of automotive chassis components technology, and more specifically, to a high-reliability automotive stabilizer bar ball joint. Background Technology

[0002] The stabilizer bar ball joint is a key component connecting the stabilizer bar and the suspension system. In existing technologies, the stabilizer bar ball joint is usually composed of a ball joint pin, a ball joint seat, a dust cover, and a housing. The spherical head of the ball joint pin is rotatably fitted into the ball joint seat. Its main function is to transmit the force of the stabilizer bar when the vehicle is turning, changing lanes, or driving over bumpy roads, so as to maintain the stability of the vehicle body posture.

[0003] However, cars are prone to vibration during driving, which can make the bolted connection mechanism unstable, causing the nuts to loosen and resulting in malfunctions.

[0004] A search revealed that Chinese patent CN222432005U discloses a stabilizing mechanism and a balance bar ball head. This structure aligns two plug-in pressing blocks with guide pressing grooves. Rotating the nut causes the plug-in pressing blocks to move closer to the elastic connecting block until they are pressed to a certain limit. The device selects the corresponding elastic connecting block for installation based on the final tightening position of the nut, so that the plug-in pressing block can be tightly connected to the elastic connecting block, which can greatly reduce the loosening of the nut and improve the stability of the device.

[0005] However, in actual use, the ball joint pin and the ball joint seat are in constant rotating contact, causing the ball joint pin and the ball joint seat to wear out quickly, resulting in an increased gap between the ball joints, abnormal noise when the vehicle is running, and thus shortening the overall service life of the ball joint. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-reliability automotive stabilizer bar ball joint to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A high-reliability automotive stabilizer bar ball joint includes a stabilizer bar and ball joint seats symmetrically mounted at both ends of the stabilizer bar. The surface of the ball joint seat has a spherical groove, and a ball pin is rotatably fitted inside the spherical groove. A connecting rod is fixedly mounted at one end of the ball pin, and a wear-resistant component is provided inside the ball joint seat. The wear-resistant component includes an annular oil reservoir inside the ball head seat. The inner wall of the annular oil reservoir to which the ball head seat belongs has multiple through holes in an annular shape. Oil-absorbing cotton is fixedly installed inside the annular oil reservoir. An inlet pipe is fixedly connected to the annular oil reservoir to which the ball head seat belongs. A sealing cap is threaded inside the inlet pipe. A wear-resistant coating is provided on the inner surface of the spherical groove. The wear-resistant coating is made of polytetrafluoroethylene coating.

[0008] By adopting the above technical solution, the PTFE wear-resistant coating directly reduces the contact friction between the ball head pin and the spherical groove of the ball head seat, reducing wear noise. Moreover, the lubricating oil stored in the oil-absorbing cotton in the annular oil reservoir continuously penetrates to the contact surface through the through hole, forming a double wear-resistant protection with the coating, which greatly extends the service life of the ball head.

[0009] As a further description of the above technical solution: a dust cover is fitted onto the surface of the ball head seat, and one end of the dust cover is fixed to the surface of the ball head seat by a first sealing clamp; The other end of the dust cover is fixed to the outer periphery of the connecting rod by a second sealing clamp. A dustproof lip is fixedly provided on the inner surface of the dust cover, and the dustproof lip is tightly fitted to the outer periphery of the connecting rod. One end of the connecting rod is fixedly provided with a threaded rod, and the surface of the annular oil storage tank is threaded with bolts.

[0010] By adopting the above technical solution: the dust cover, together with the first sealing clamp and the second sealing clamp, can form an outer layer of protection from both ends of the ball head seat and the connecting rod, blocking the intrusion of external dust and moisture.

[0011] As a further description of the above technical solution: a pre-tightening component is provided on one side of the second sealing clamp. The pre-tightening component includes an arc-shaped connecting plate fixedly disposed at one end of the second sealing clamp. A third sealing clamp is fixedly disposed on the surface of the arc-shaped connecting plate. A fixing ring is fixedly disposed on the inner wall of the third sealing clamp. A sealing layer is fixedly disposed on the inner wall of the fixing ring. The sealing layer is tightly fitted to the outer periphery of the threaded rod. A plurality of pre-tightening springs are fixedly provided on one side of the fixed ring, and a pre-tightening washer is fixedly provided on one end of the pre-tightening spring. The pre-tightening washer abuts against the end of the connecting rod away from the ball head pin. A ring-shaped reinforcing rib is fixedly provided at the connection between the ball head and the connecting rod, and the ring-shaped reinforcing rib can be made of high-strength steel.

[0012] By adopting the above technical solution, the preload spring pushes the preload washer against the end of the connecting rod, continuously providing preload force to counteract the risk of component loosening caused by vehicle vibration.

[0013] The technical effects and advantages of this utility model are as follows: This utility model adopts wear-resistant components, effectively solving the core problem of rapid wear of existing stabilizer bar ball joints, and providing key guarantees for the long-term reliable operation of the ball joint. From the perspective of material and structure synergy, the polytetrafluoroethylene wear-resistant coating on the inner surface of the spherical groove has excellent self-lubricating and anti-friction properties, which can directly reduce the contact wear between the ball joint pin and the ball joint seat, avoid abnormal noise caused by component friction, and improve the driving experience. At the same time, the annular oil reservoir, oil-absorbing cotton and through holes constitute a long-term lubrication system: the oil-absorbing cotton can store lubricating oil, and when the ball joint pin rotates during vehicle operation, the lubricating oil continuously penetrates to the contact surface through the through holes, forming a double protection of coating and lubrication with the wear-resistant coating, which greatly slows down the wear rate and ensures that the wear-resistant components maintain a high-efficiency working state for a long time. This utility model adopts a pre-tightening component. The pre-tightening spring on one side of the fixing ring pushes the pre-tightening washer to the end of the connecting rod, which can continuously provide pre-tightening force to offset the risk of component loosening caused by vibration during vehicle operation. It also cooperates with the high-strength steel annular reinforcing rib at the connection between the ball joint and the connecting rod to jointly bear the load under heavy load and aggressive driving, reduce the probability of ball joint loosening, and ensure vehicle driving safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the overall structure of the ball head seat of this utility model.

[0016] Figure 3 This is a schematic diagram of the overall explosion structure of this utility model.

[0017] Figure 4 This is a schematic diagram of the ball head pin, connecting rod, threaded rod, and bolt structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the wear-resistant component structure of this utility model.

[0019] Figure 6 This is a schematic diagram of the pre-tightening component structure of this utility model.

[0020] Figure 7 This is a schematic cross-sectional view of the pre-tightening component of this utility model.

[0021] The attached diagram is labeled as follows: 1. Ball head seat; 2. Ball head pin; 3. Connecting rod; 4. Annular oil reservoir; 5. Through hole; 6. Oil-absorbing cotton; 7. Feed pipe; 8. Sealing cap; 9. Wear-resistant coating; 10. Dust cover; 11. First sealing clamp; 12. Second sealing clamp; 13. Dust lip; 14. Threaded rod; 15. Bolt; 16. Arc-shaped connecting plate; 17. Third sealing clamp; 18. Fixing ring; 19. Preload spring; 20. Preload washer; 21. Annular reinforcing rib. Detailed Implementation

[0022] 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.

[0023] The embodiments disclosed in this application are as follows: Figure 1-7 The invention relates to a high-reliability automotive stabilizer bar ball joint, comprising a stabilizer bar and ball joint seats 1 symmetrically mounted at both ends of the stabilizer bar. The ball joint seat 1 has a spherical groove on its surface, and a ball pin 2 is rotatably fitted inside the spherical groove. A connecting rod 3 is fixedly mounted on one end of the ball pin 2, and a wear-resistant component is provided inside the ball joint seat 1. The wear-resistant component includes an annular oil reservoir 4 inside the ball head seat 1. The inner wall of the annular oil reservoir 4 to which the ball head seat 1 belongs has multiple through holes 5 in an annular shape. Oil-absorbing cotton 6 is fixedly installed inside the annular oil reservoir 4. The annular oil reservoir 4 to which the ball head seat 1 belongs is fixedly connected to a feed pipe 7. A sealing cap 8 is threaded inside the feed pipe 7. The inner surface of the spherical groove is provided with a wear-resistant coating 9, which is made of polytetrafluoroethylene coating. After assembly, open the sealing cover 8 inside the feed pipe 7 connected to the annular oil reservoir 4 on the ball head seat 1, and inject lubricating oil into the annular oil reservoir 4. The lubricating oil is absorbed and stored by the oil-absorbing cotton 6 in the reservoir, forming a long-term lubrication reserve. When the vehicle is in motion, as the ball head pin 2 rotates in the spherical groove, the lubricating oil absorbed by the oil-absorbing cotton 6 will slowly seep out through multiple through holes 5 opened in the inner wall of the annular oil reservoir 4, penetrating to the contact surface between the ball head pin 2 and the spherical groove. Combined with the polytetrafluoroethylene wear-resistant coating 9, this doublely reduces the wear rate of both components and extends their service life.

[0024] Reference Figure 2-4 As shown, a dust cover 10 is fitted onto the surface of the ball head 1, and one end of the dust cover 10 is fixed to the surface of the ball head 1 by a first sealing clamp 11; The other end of the dust cover 10 is fixed to the outer periphery of the rod of the connecting rod 3 by the second sealing clamp 12. A dust lip 13 is fixedly provided on the inner surface of the dust cover 10, and the dust lip 13 is tightly fitted to the outer periphery of the connecting rod 3. One end of the connecting rod 3 is fixedly provided with a threaded rod 14, and the surface of the annular oil storage tank 4 is threadedly connected with a bolt 15; Next, the pre-tightening component on one side of the second sealing clamp 12 is used for auxiliary fixation. The arc-shaped connecting plate 16 is fixed to one end of the second sealing clamp 12, and the inner wall fixing ring 18 of the third sealing clamp 17 on its surface is tightly fitted to the outer periphery of the threaded rod 14 at one end of the connecting rod 3. At the same time, the pre-tightening spring 19 on one side of the fixing ring 18 pushes the pre-tightening washer 20 to abut against the end of the connecting rod 3 away from the ball head pin 2. The pre-tightening force ensures that the components are tightly connected and avoids loosening. Finally, the bolts 15 on the surface of the annular oil reservoir 4 are used to connect with the fixing parts to complete the overall assembly and fixation. Moreover, when the vehicle turns, changes lanes, or travels on bumpy roads, external dust and moisture will first come into contact with the dust cover 10. The double-layer dust cover 10 blocks most pollutants through the fixing effect of the first sealing clamp 11 and the second sealing clamp 12. At the same time, the tight fit between the dust lip 13 and the connecting rod 3 further intercepts tiny impurities that may enter from the gap between the dust cover 10 and the connecting rod 3, preventing pollutants from entering the spherical groove and corroding the components.

[0025] Reference Figure 5-7 As shown, a pre-tightening assembly is provided on one side of the second sealing clamp 12. The pre-tightening assembly includes an arc-shaped connecting plate 16 fixedly disposed at one end of the second sealing clamp 12. A third sealing clamp 17 is fixedly disposed on the surface of the arc-shaped connecting plate 16. A fixing ring 18 is fixedly disposed on the inner wall of the third sealing clamp 17. A sealing layer is fixedly disposed on the inner wall of the fixing ring 18. The sealing layer is tightly fitted to the outer periphery of the threaded rod 14. A plurality of pre-tightening springs 19 are fixedly provided on one side of the fixed ring 18. A pre-tightening washer 20 is fixedly provided on one end of the pre-tightening spring 19. The pre-tightening washer 20 abuts against the end of the connecting rod 3 away from the ball head pin 2. An annular reinforcing rib 21 is fixedly provided at the connection between the ball head seat 1 and the connecting rod 3. The annular reinforcing rib 21 can be made of high-strength steel. When the vehicle is under heavy load or under aggressive driving conditions, the force of the fixing component is transmitted to the connecting rod 3 through the threaded rod 14, and then to the ball head pin 2 through the connecting rod 3. The ball head pin 2 rotates in the spherical groove and transmits the force to the ball head seat 1, and finally to the suspension system. During this process, the annular reinforcing rib 21 bears part of the load, enhances the connection strength between the ball head seat 1 and the connecting rod 3, prevents loosening, and avoids cracking of the connection part due to stress concentration. The preload spring 19 continuously provides preload force through the preload washer 20 to ensure that each connection part remains stable under vibration environment and ensures the driving safety of the vehicle.

[0026] Working principle of this utility model: This utility model is a high-reliability automotive stabilizer bar ball joint. When in use, the ball pin 2 is rotatably fitted into the spherical groove on the surface of the ball joint seat 1, ensuring that the ball pin 2 can rotate flexibly, laying the foundation for the subsequent transmission of stabilizer bar force. At the same time, the polytetrafluoroethylene wear-resistant coating 9 on the inner surface of the spherical groove directly contacts the ball pin 2, initially reducing the frictional loss between the two. Then, the dust cover 10 is put on the surface of the ball head seat 1, and one end of the dust cover 10 is fixed to the ball head seat 1 with the first sealing clamp 11. Then, the other end of the dust cover 10 is fixed to the outer periphery of the connecting rod 3 by the second sealing clamp 12. The dust lip 13 on the inner surface of the dust cover 10 is tightly fitted with the outer periphery of the connecting rod 3, thus initially forming an outer layer of sealing protection. Next, the pre-tightening component on one side of the second sealing clamp 12 is used for auxiliary fixation. The arc-shaped connecting plate 16 is fixed to one end of the second sealing clamp 12, and the inner wall fixing ring 18 of the third sealing clamp 17 on its surface is tightly fitted to the outer periphery of the threaded rod 14 at one end of the connecting rod 3. At the same time, the pre-tightening spring 19 on one side of the fixing ring 18 pushes the pre-tightening washer 20 to abut against the end of the connecting rod 3 away from the ball head pin 2. The pre-tightening force ensures that the components are tightly connected and avoids loosening. Finally, the bolts 15 on the surface of the annular oil reservoir 4 are used to connect with the fixing parts to complete the overall assembly and fixation. After assembly, open the sealing cover 8 inside the feed pipe 7 connected to the annular oil reservoir 4 on the ball head seat 1, and inject lubricating oil into the annular oil reservoir 4. The lubricating oil is absorbed and stored by the oil-absorbing cotton 6 in the reservoir, forming a long-term lubrication reserve. When the vehicle is in motion, the ball head pin 2 rotates in the spherical groove. The lubricating oil absorbed by the oil-absorbing cotton 6 will slowly seep out through multiple through holes 5 opened in the inner wall of the annular oil reservoir 4 and penetrate to the contact surface between the ball head pin 2 and the spherical groove. Combined with the polytetrafluoroethylene wear-resistant coating 9, the wear rate of both is reduced, and the service life of the components is extended. Moreover, when the vehicle is turning, changing lanes or passing through bumpy roads, external dust and moisture will first come into contact with the dust cover 10. The double-layer dust cover 10 blocks most pollutants through the fixing effect of the first sealing clamp 11 and the second sealing clamp 12. At the same time, the tight fit between the dust lip 13 and the connecting rod 3 further intercepts tiny impurities that may enter from the gap between the dust cover 10 and the connecting rod 3, preventing pollutants from entering the spherical groove and corroding the components. When the vehicle is under heavy load or under aggressive driving conditions, the force of the fastener is transmitted to the connecting rod 3 through the threaded rod 14, and then to the ball head pin 2 through the connecting rod 3. The ball head pin 2 rotates in the spherical groove and transmits the force to the ball head seat 1, and finally to the suspension system. During this process, the annular reinforcing rib 21 bears part of the load, enhances the connection strength between the ball head seat 1 and the connecting rod 3, prevents loosening, and avoids cracking of the connection due to stress concentration. The preload spring 19 continuously provides preload through the preload washer 20 to ensure that each connection remains stable under vibration and to ensure the safety of vehicle driving. When the lubricating oil in the annular oil reservoir 4 is insufficient after long-term use, the sealing cover 8 can be opened again and lubricating oil can be added to the annular oil reservoir 4 through the feed pipe 7 to ensure continuous and effective lubrication and ensure the long-term reliable operation of the stabilizer head.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-reliability automotive stabilizer bar ball joint, comprising a stabilizer bar and ball joint seats (1) symmetrically mounted at both ends of the stabilizer bar, characterized in that: The ball head seat (1) has a spherical groove on its surface, and a ball head pin (2) is rotatably fitted inside the spherical groove. A connecting rod (3) is fixedly provided at one end of the ball head pin (2), and a wear-resistant component is provided inside the ball head seat (1). The wear-resistant component includes an annular oil reservoir (4) inside the ball head seat (1). The inner wall of the annular oil reservoir (4) to which the ball head seat (1) belongs is provided with multiple through holes (5) in an annular shape. An oil-absorbing cotton (6) is fixedly installed inside the annular oil reservoir (4). An inlet pipe (7) is fixedly connected to the annular oil reservoir (4) to which the ball head seat (1) belongs. A sealing cap (8) is threaded inside the inlet pipe (7). A wear-resistant coating (9) is provided on the inner surface of the spherical groove. The wear-resistant coating (9) is made of polytetrafluoroethylene coating.

2. The high-reliability automotive stabilizer bar ball joint according to claim 1, characterized in that: The ball head seat (1) is covered with a dust cover (10), and one end of the dust cover (10) is fixed to the surface of the ball head seat (1) by a first sealing clamp (11).

3. The high-reliability automotive stabilizer bar ball joint according to claim 2, characterized in that: The other end of the dust cover (10) is fixed to the outer periphery of the rod of the connecting rod (3) by the second sealing clamp (12). A dust lip (13) is fixedly provided on the inner surface of the dust cover (10), and the dust lip (13) is tightly fitted to the outer periphery of the connecting rod (3).

4. The high-reliability automotive stabilizer bar ball joint according to claim 1, characterized in that: One end of the connecting rod (3) is fixedly provided with a threaded rod (14), and the surface of the annular oil storage tank (4) is threadedly connected with a bolt (15).

5. The high-reliability automotive stabilizer bar ball joint according to claim 3, characterized in that: A pre-tightening component is provided on one side of the second sealing clamp (12). The pre-tightening component includes an arc-shaped connecting plate (16) fixedly disposed at one end of the second sealing clamp (12). A third sealing clamp (17) is fixedly disposed on the surface of the arc-shaped connecting plate (16). A fixing ring (18) is fixedly disposed on the inner wall of the third sealing clamp (17). A sealing layer is fixedly disposed on the inner wall of the fixing ring (18). The sealing layer is tightly fitted to the outer periphery of the threaded rod (14).

6. The high-reliability automotive stabilizer bar ball joint according to claim 5, characterized in that: A plurality of pre-tightening springs (19) are fixedly provided on one side of the fixed ring (18), and a pre-tightening washer (20) is fixedly provided at one end of the pre-tightening spring (19). The pre-tightening washer (20) abuts against the end of the connecting rod (3) away from the ball head pin (2).

7. The high-reliability automotive stabilizer bar ball joint according to claim 1, characterized in that: A ring-shaped reinforcing rib (21) is fixedly provided at the connection between the ball head seat (1) and the connecting rod (3). The ring-shaped reinforcing rib (21) can be made of high-strength steel.

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