Novel steering pull rod structure

Abstract

The utility model discloses a novel steering pull rod structure which comprises a steering gear, a rack connecting pull rod is movably connected in the steering gear, a ball head is arranged at the tail end of the rack connecting pull rod, a ball head connecting rod is arranged on the side, close to the rack connecting pull rod, of the ball head, and the ball head connecting rod is fixedly connected with the rack connecting pull rod. A ball shell is arranged on the outer side of the ball head, a ball bowl is arranged in the ball shell, and the ball head is rotationally connected with the ball bowl. The utility model relates to the technical field of automobile steering systems, and solves the problems that in the prior art, an automobile steering system generally needs two protective sleeves to respectively seal and protect a ball head connecting part and the tail end of a steering gear, or needs a longer protective sleeve to seal the two parts simultaneously, so that the installation process is more complicated, the cost is higher, and the cost is higher. Meanwhile, the possibility of damage of the protective sleeve is increased, and the service life and the use stability of the steering pull rod are further influenced.

Description

Technical Field

[0001] This utility model relates to the field of automotive steering system technology, specifically a novel steering tie rod structure. Background Technology

[0002] Steering tie rods are the core transmission components of a car's steering system. They mechanically transmit the steering torque from the steering wheel to the wheels, control the wheel steering angle, and coordinate the movement of the left and right wheels, directly affecting the vehicle's handling stability and driving safety. In existing technologies, car steering systems typically require two protective sleeves to seal and protect the ball joint connection and the end of the steering gear, or a longer protective sleeve to seal both parts simultaneously. This makes the installation process more complex and costly, and also increases the possibility of damage to the protective sleeves, thereby affecting the service life and stability of the steering tie rod. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a novel steering tie rod structure. This solves the problem that in existing technologies, automotive steering systems typically require two protective sleeves to seal and protect the ball joint connection and the end of the steering gear, or require the use of a long protective sleeve to seal both parts simultaneously. This results in a complex and costly installation process, and also increases the possibility of damage to the protective sleeves, thereby affecting the service life and stability of the steering tie rod.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel steering tie rod structure, comprising a steering gear, wherein a rack connecting tie rod is movably connected inside the steering gear, a ball head is provided at the end of the rack connecting tie rod, a ball head connecting rod is provided on the side of the ball head near the rack connecting tie rod, the ball head connecting rod is fixedly connected to the rack connecting tie rod, a spherical shell is provided on the outer side of the ball head, a ball cup is provided inside the spherical shell, the ball head is rotatably connected to the ball cup, an inner tie rod is provided on the side of the spherical shell away from the rack connecting tie rod, a steering linkage rod is fixedly connected to the end of the inner tie rod away from the spherical shell, a first mounting groove is provided on the outer wall of the spherical shell near the inner tie rod, a second mounting groove is provided on the outer wall of the steering gear near the spherical shell, a protective sleeve is provided on the outer side of the ball head connecting rod, both ends of the protective sleeve are fixedly connected to the interior of the first and second mounting grooves by fixing clamps, a spherical surface is provided on the outer wall of the spherical shell near the steering gear, and a limit hole is provided on the inner wall of the steering gear near the spherical shell.

[0005] Preferably, a buffer sleeve is fitted to the inner wall of the limiting hole, the spherical surface is fitted to both the limiting hole and the buffer sleeve, and a nylon sleeve is fitted to the outer wall of the ball head connecting rod, the nylon sleeve being fitted to the spherical shell.

[0006] Preferably, the outer wall of the ball joint connecting rod is provided with a connecting thread at the end away from the ball head, and the end of the rack connecting rod is provided with a connecting screw hole. The connecting thread is threadedly connected to the connecting screw hole, and the outer wall of the connecting thread is threadedly connected with an anti-loosening nut. The anti-loosening nut is engaged with the rack connecting rod, and the outer wall of the ball joint connecting rod is provided with a flattening.

[0007] Preferably, the interior of the spherical shell is provided with oil storage chambers at equal intervals, and the interior of the spherical cup is provided with oil guide holes at equal intervals, the oil guide holes being connected to the oil storage chambers.

[0008] Preferably, a sealing guide sleeve is fitted to the inner wall of the rack connecting rod, and the sealing guide sleeve is movably connected to the rack connecting rod.

[0009] This utility model provides a novel steering tie rod structure. It offers the following advantages: This novel steering tie rod structure, through the cooperation between the steering gear, rack and pinion connecting rod, ball joint, ball joint connecting rod, ball housing, ball cup, inner tie rod, steering linkage rod, first mounting groove, second mounting groove, protective sleeve, fixing clamp, spherical surface, and limiting hole, shortens the length of the ball joint connecting rod, reducing the distance between the ball joint and the rack and pinion connecting rod. Furthermore, the guiding cooperation between the spherical surface and the limiting hole ensures the accuracy and stability of steering torque transmission. Simultaneously, by using a shorter protective sleeve, effective sealing protection can be formed for the ball joint connection and the end of the steering gear, thereby simplifying the installation process of the protective sleeve, reducing production costs, and decreasing the probability of damage to the protective sleeve. This ensures effective protection for the vehicle's steering system, thus contributing to improved service life and operational stability of the steering tie rod.

[0010] Through the cooperation between the steering gear, ball joint connecting rod, ball housing, spherical surface, limiting hole, buffer sleeve, and nylon sleeve, and the guiding cooperation between the spherical surface and the limiting hole, the ball housing can smoothly and accurately enter the interior of the steering gear. The buffer sleeve effectively absorbs and mitigates the impact and friction between the ball housing and the steering gear inside the limiting hole. Furthermore, by inserting a nylon sleeve onto the outside of the ball joint connecting rod, friction and collision between the ball joint connecting rod and the ball housing are prevented when the vehicle is turning. This reduces the wear of components and protects the steering gear and ball housing from damage, thus helping to extend the overall service life of the steering tie rod. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the ball head connecting rod, ball shell, and inner tie rod in this utility model;

[0013] Figure 3 for Figure 1A magnified view of a portion of region A in the middle;

[0014] Figure 4 for Figure 1 A magnified view of a portion of region B in the middle;

[0015] Figure 5 for Figure 1 A magnified view of a portion of region C.

[0016] In the diagram: 1. Steering gear; 2. Rack and pinion connecting rod; 3. Ball joint; 4. Ball joint connecting rod; 5. Ball housing; 6. Ball cup; 7. Inner tie rod; 8. Steering linkage rod; 9. First mounting slot; 10. Second mounting slot; 11. Protective sleeve; 12. Fixing clamp; 13. Spherical surface; 14. Limiting hole; 15. Buffer sleeve; 16. Connecting thread; 17. Connecting screw hole; 18. Anti-loosening nut; 19. Flattened; 20. Sealing guide sleeve; 21. Nylon sleeve; 22. Oil reservoir; 23. Oil guide hole. Detailed Implementation

[0017] 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.

[0018] In the existing technology, automotive steering systems typically require two protective sleeves to seal and protect the ball joint connection and the end of the steering gear respectively, or a long protective sleeve to seal both parts at the same time. This makes the installation process more complicated and costly, and also increases the possibility of damage to the protective sleeves, thereby affecting the service life and stability of the steering tie rod.

[0019] In view of this, the present invention provides a novel steering tie rod structure. Through the cooperation between the steering gear, rack connecting rod, ball joint, ball joint connecting rod, ball housing, ball cup, inner tie rod, steering linkage rod, first mounting groove, second mounting groove, protective sleeve, fixing clamp, spherical surface, and limiting hole, the structure shortens the length of the ball joint connecting rod, reducing the distance between the ball joint and the rack connecting rod. Furthermore, the guiding cooperation between the spherical surface and the limiting hole ensures the accuracy and stability of steering torque transmission. Simultaneously, by using a shorter protective sleeve, effective sealing protection can be formed for the ball joint connection and the end of the steering gear, simplifying the installation process of the protective sleeve, reducing production costs, and lowering the probability of damage to the protective sleeve. This ensures effective protection for the vehicle's steering system, improving the service life and stability of the steering tie rod.

[0020] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0021] Depend on Figure 1-5 A novel steering tie rod structure includes a steering gear 1. A rack-and-pinion connecting rod 2 is movably connected inside the steering gear 1. A ball joint 3 is located at the end of the rack-and-pinion connecting rod 2. A ball joint connecting rod 4 is located on the side of the ball joint 3 near the rack-and-pinion connecting rod 2. The ball joint connecting rod 4 is fixedly connected to the rack-and-pinion connecting rod 2. A ball shell 5 is located on the outer side of the ball joint 3. A ball cup 6 is located inside the ball shell 5. The ball cup 6 is made of high-strength wear-resistant alloy material, possessing excellent mechanical properties and wear resistance, effectively resisting wear and corrosion during long-term use. The ball joint 3 and the ball cup 6 are rotatably connected. The ball shell 5 is located away from the rack-and-pinion connecting rod 2. An inner tie rod 7 is provided on one side of the connecting rod 2. A steering linkage rod 8 is fixedly connected to the end of the inner tie rod 7 away from the ball shell 5. A first mounting groove 9 is provided on the outer wall of the ball shell 5 near the inner tie rod 7. A second mounting groove 10 is provided on the outer wall of the steering gear 1 near the ball shell 5. A second mounting groove 10 is provided on the outer side of the ball head connecting rod 4. Both ends of the protective sleeve 11 are fixedly connected to the inside of the first mounting groove 9 and the second mounting groove 10 by fixing clamps 12. A spherical surface 13 is provided on the outer wall of the ball shell 5 near the steering gear 1. A limit hole 14 is provided on the inner wall of the steering gear 1 near the ball shell 5.

[0022] In the specific implementation process, it is worth noting that the core component of the vehicle steering system is formed by the cooperation between the steering gear 1 and the rack connecting rod 2. This component receives the driver's steering commands and, through the movement of the rack connecting rod 2 within the steering gear 1, drives the wheels to perform steering actions, thus converting the steering torque into the wheel steering angle and achieving vehicle steering operation. The ball joint 6 is made of high-strength wear-resistant alloy material, possessing excellent mechanical properties and wear resistance, effectively resisting wear and corrosion during long-term use. Through the cooperation between the rack connecting rod 2, ball head 3, ball head connecting rod 4, ball housing 5, ball joint 6, inner tie rod 7, and steering linkage rod 8, the ball head 3 is fixed to the rack connecting rod 2 via the ball head connecting rod 4. At the end, the ball housing 5 is connected to the steering linkage 8 via the inner tie rod 7. The connection between the ball head 3, the ball housing 5, and the ball cup 6 enables torque transmission between the steering linkage 8 and the rack connecting rod 2. The rotating connection design between the ball head 3 and the ball cup 6 makes steering more flexible and smooth, reducing friction loss during steering. Shortening the length of the ball head connecting rod 4 reduces the distance between the ball head 3 and the rack connecting rod 2, ensuring the accuracy and stability of torque transmission. Through the cooperation of the steering gear 1, the ball housing 5, the first mounting groove 9, the second mounting groove 10, the protective sleeve 11, and the fixing clamp 12, the fixing clamp 12 secures both ends of the protective sleeve 11 to the inside of the first mounting groove 9 and the second mounting groove 10, respectively. This design achieves complete enclosed protection for the ball joint connection and the end of the steering gear 1, simplifying the installation process of the protective sleeve 11, reducing production costs, and lowering the probability of damage to the protective sleeve 11. It ensures effective protection for the steering tie rod, improving its service life and operational stability. Through the cooperation between the steering gear 1, rack connecting tie rod 2, ball joint 3, ball joint connecting rod 4, ball housing 5, ball cup 6, spherical surface 13, and limiting hole 14, when the rack connecting tie rod 2 moves into the steering gear 1, it drives the ball housing 5 to move into the limiting hole 14. Through the guiding cooperation between the spherical surface 13 and the limiting hole 14, the ball housing 5 can smoothly and accurately enter the interior of the steering gear 1, ensuring sufficient movement of the steering tie rod and passing through the limiting hole 14. 4. The spherical surface 13 is limited to ensure the stability of the ball housing 5 inside the steering gear 1, preventing wobbling or deviation during steering and affecting the performance of the steering tie rod. It can effectively absorb and mitigate the impact and vibration generated during steering. Through the cooperation between the steering gear 1, rack connecting tie rod 2, ball head 3, ball head connecting rod 4, ball housing 5, ball cup 6, inner tie rod 7, steering linkage rod 8, first mounting groove 9, second mounting groove 10, protective sleeve 11, fixing clamp 12, spherical surface 13 and limiting hole 14, the length of the ball head connecting rod 4 is shortened, reducing the distance between the ball head 3 and the rack connecting tie rod 2. The guiding cooperation between the spherical surface 13 and the limiting hole 14 ensures the accuracy and stability of steering torque transmission. At the same time,By using a shorter protective sleeve 11, effective sealing protection can be formed for the ball joint 3 connection and the end of the steering gear 1, simplifying the installation process of the protective sleeve 11, reducing production costs, and decreasing the probability of damage to the protective sleeve 11. This ensures effective protection for the automotive steering system, improves the service life and operational stability of the steering tie rod.

[0023] Furthermore, a buffer sleeve 15 is fitted to the inner wall of the limiting hole 14, and the spherical surface 13 is fitted to the limiting hole 14 and the buffer sleeve 15 respectively. A nylon sleeve 21 is fitted to the outer wall of the ball head connecting rod 4, and the nylon sleeve 21 is fitted to the spherical shell 5.

[0024] In the specific implementation process, it is worth noting that, through the cooperation between the steering gear 1, ball housing 5, spherical surface 13, limiting hole 14, and buffer sleeve 15, the buffer sleeve 15 effectively absorbs and alleviates the impact and friction between the ball housing 5 and the steering gear 1 on the inner side of the limiting hole 14, protecting the steering gear 1 and the ball housing 5 from damage. Through the cooperation between the ball head 3, ball head connecting rod 4, ball housing 5, and nylon sleeve 21, by inserting the nylon sleeve 21 onto the outside of the ball head connecting rod 4, friction and collision between the ball head connecting rod 4 and the ball housing 5 are avoided when the vehicle is turning, reducing the impact and wear between components, and improving the overall durability and stability. The fit between the ball joint connecting rod 4, ball housing 5, spherical surface 13, limiting hole 14, buffer sleeve 15 and nylon sleeve 21, through the guiding fit between the spherical surface 13 and the limiting hole 14, allows the ball housing 5 to smoothly and accurately enter the interior of the steering gear 1. The buffer sleeve 15 effectively absorbs and alleviates the impact and friction between the ball housing 5 and the steering gear 1 inside the limiting hole 14. Furthermore, by inserting the nylon sleeve 21 outside the ball joint connecting rod 4, friction and collision between the ball joint connecting rod 4 and the ball housing 5 are prevented when the vehicle is turning, reducing the wear of components, protecting the steering gear 1 and the ball housing 5 from damage, and extending the overall service life of the steering tie rod.

[0025] Furthermore, the outer wall of the ball head connecting rod 4 is provided with a connecting thread 16 at the end away from the ball head 3, and the end of the rack connecting rod 2 is provided with a connecting screw hole 17. The connecting thread 16 is threadedly connected to the connecting screw hole 17. The outer wall of the connecting thread 16 is threadedly connected with a lock nut 18. The lock nut 18 is engaged with the rack connecting rod 2. The outer wall of the ball head connecting rod 4 is provided with a flattening 19. The flattening 19 is used to tighten or disassemble the ball head connecting rod 4 using tools such as wrenches.

[0026] In the specific implementation process, it is worth noting that through the cooperation between the rack connecting rod 2, the ball joint connecting rod 4, the connecting thread 16, the connecting screw hole 17, and the anti-loosening nut 18, the ball joint connecting rod 4 is screwed into the connecting screw hole 17 at the end of the rack connecting rod 2 through the connecting thread 16, and the anti-loosening nut 18 is tightened, so that the anti-loosening nut 18 and the rack connecting rod 2 are pressed together, effectively preventing the ball joint connecting rod 4 from loosening during use, ensuring a stable connection between the ball joint 3 and the rack connecting rod 2, and thus ensuring the continuity and stability of the steering torque transmission. The flat 19 is used to tighten or disassemble the ball joint connecting rod 4 with tools such as wrenches, which facilitates disassembly and assembly work when repairing or replacing the steering tie rod structure, improving maintenance efficiency.

[0027] Furthermore, the interior of the spherical shell 5 is provided with oil storage chambers 22 at equal intervals, and the interior of the spherical cup 6 is provided with oil guide holes 23 at equal intervals, the oil guide holes 23 being connected to the oil storage chambers 22.

[0028] In the specific implementation process, it is worth noting that through the cooperation between the ball head 3, ball housing 5, ball cup 6, oil reservoir 22 and oil guide hole 23, the oil reservoir 22 is opened inside the ball housing 5 to increase the storage capacity of lubricating oil in the ball housing 5, and the oil guide hole 23 is opened inside the ball cup 6 to allow the lubricating oil to be evenly distributed on the contact surface between the ball head 3 and the ball cup 6, thereby reducing the coefficient of friction and reducing friction loss during the steering process. At the same time, it can continuously provide lubrication to the contact surface between the ball head 3 and the ball cup 6, extend the service life of the steering tie rod, and improve the overall durability and stability.

[0029] Furthermore, a sealing guide sleeve 20 is fitted to the inner wall of the rack connecting rod 2. The sealing guide sleeve 20 is used to improve the sealing performance between the rack connecting rod 2 and the steering gear 1. The sealing guide sleeve 20 is movably connected to the rack connecting rod 2.

[0030] In the specific implementation process, it is worth noting that the sealing guide sleeve 20 is used to improve the sealing performance between the rack connecting rod 2 and the steering gear 1, further preventing dust, moisture and other impurities from entering the steering system and causing damage or failure of the steering system. At the same time, the sealing guide sleeve 20 can also provide support and guidance for the rack connecting rod 2, ensuring the smooth movement of the rack connecting rod 2 in the steering gear 1 and improving the stability and reliability of the steering system.

[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 new steering tie rod structure comprising a steering gear (1) characterized in that: The inside of the steering gear (1) is movably connected with a rack connecting pull rod (2), the end of the rack connecting pull rod (2) is provided with a ball head (3), the side close to the rack connecting pull rod (2) of the ball head (3) is provided with a ball head connecting rod (4), the ball head connecting rod (4) is fixedly connected with the rack connecting pull rod (2), the outer side of the ball head (3) is provided with a ball shell (5), the inside of the ball shell (5) is provided with a ball bowl (6), the ball head (3) is rotatably connected with the ball bowl (6), the side away from the rack connecting pull rod (2) of the ball shell (5) is provided with an inner pull rod (7), the end away from the ball shell (5) of the inner pull rod (7) is fixedly connected with a steering linkage rod (8), the outer wall of the ball shell (5) is provided with a first mounting groove (9) on the side close to the inner pull rod (7), the end close to the ball shell (5) of the outer wall of the steering gear (1) is provided with a second mounting groove (10), the outer side of the ball head connecting rod (4) is provided with a protective sleeve (11), the two ends of the protective sleeve (11) are fixedly connected in the inside of the first mounting groove (9) and the second mounting groove (10) through fixing clamps (12), the outer wall of the ball shell (5) is provided with a spherical surface (13) on the end close to the steering gear (1), the inner wall of the steering gear (1) is provided with a limiting hole (14) on the end close to the ball shell (5).

2. A new type of steering tie rod structure according to claim 1, characterized in that: The inner wall of the limiting hole (14) is movably connected with a buffer sleeve (15), the spherical surface (13) is movably connected with the limiting hole (14) and the buffer sleeve (15) respectively, the outer wall of the ball head connecting rod (4) is sleeved with a nylon sleeve (21), the nylon sleeve (21) is movably connected with the ball shell (5).

3. A new type of steering tie rod structure according to claim 1, characterized in that: The outer wall of the end of the ball head connecting rod (4) away from the ball head (3) is provided with a connecting thread (16), the end of the rack connecting pull rod (2) is provided with a connecting screw hole (17), the connecting thread (16) is screwedly connected with the connecting screw hole (17), the outer wall of the connecting thread (16) is screwedly connected with a locknut (18), the locknut (18) is movably connected with the rack connecting pull rod (2), the outer wall of the ball head connecting rod (4) is provided with a pair of flat (19).

4. A new type of steering tie rod structure according to claim 1, characterized in that: The inside of the ball shell (5) is equidistantly provided with an oil storage cavity (22), the inside of the ball bowl (6) is equidistantly provided with an oil guide hole (23), the oil guide hole (23) is in communication with the oil storage cavity (22).

5. A new type of steering tie rod structure according to claim 1, characterized in that: The inner wall of the rack connecting pull rod (2) is movably connected with a sealing guide sleeve (20), the sealing guide sleeve (20) is movably connected with the rack connecting pull rod (2).

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