Gear shaft for automobile steering mechanism
The individual replacement of the gear shaft is achieved through the sleeve and slot insertion structure, which solves the problem of replacing the entire gear shaft, reduces costs, improves connection stability, and reduces resource waste and vibration noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional gear shafts require complete replacement when the helical teeth are damaged, resulting in high costs and wasted resources. Furthermore, the connection structure is prone to deviation under frequent turning operations, causing vibration and noise.
The combination structure of the first sleeve, the second sleeve, the connecting ring, the bolt and the nut allows for the individual replacement of the gear shaft, and provides auxiliary support through the slot and the insert to enhance the connection stability.
It enables individual replacement of the gear shaft, reducing replacement costs, minimizing resource waste, improving connection stability, and reducing abnormal vibration and noise.
Smart Images
Figure CN224117368U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically a gear shaft for automotive steering mechanisms. Background Technology
[0002] As a key component for vehicle control, the performance of the automotive steering mechanism directly affects driving safety and the driving experience. The gear shaft, as the core transmission component in the steering mechanism, plays a crucial role in converting the rotational motion of the steering wheel into the movement of components such as the steering rocker arm.
[0003] In traditional gear shafts, workers fix both ends of the gear shaft to the steering gear housing and to components connecting to the inside of the steering mechanism, respectively.
[0004] However, when the helical teeth on the surface of the gear shaft used in the automotive steering mechanism are severely damaged and need to be replaced, most gear shafts are integral pieces. When replacing the helical teeth, the entire gear shaft needs to be replaced, which increases the replacement cost. At the same time, the gear shaft still has good performance in the advanced position and can only be disposed of as scrap, resulting in a huge waste of resources. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a gear shaft for automotive steering mechanisms. It solves the problem that when the helical teeth on the surface of a gear shaft for automotive steering mechanisms are severely damaged and need to be replaced, most gear shafts are integral pieces, requiring the replacement of the entire gear shaft, which increases replacement costs. At the same time, even if the gear shaft still has good performance in the advanced position, it can only be disposed of as scrap, resulting in a great waste of resources.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a gear shaft for an automotive steering mechanism, comprising a connecting shaft, one end of which is fitted with a gear shaft, and both the outer walls of the connecting shaft and the gear shaft are provided with replacement devices; the replacement device comprises a first sleeve, a second sleeve, a connecting ring, a through hole, a bolt, and a nut; the first sleeve is fitted onto the outer wall of the connecting shaft, the inner wall of the first sleeve is fitted against the outer wall of the connecting shaft, a second sleeve is fitted onto one side of the first sleeve, the second sleeve is fitted onto the outer wall of the gear shaft, the inner wall of the second sleeve is fitted against the outer wall of the gear shaft, a connecting ring is fixedly connected to the outer walls of both the first and second sleeves, a through hole is provided on the surface of the connecting ring, a bolt is provided on the outside of the connecting ring, the bolt passes through the through hole, and a nut is threaded onto the outer wall of the bolt.
[0007] Preferably, a limiting device is provided between the first sleeve and the second sleeve; the limiting device includes a slot, a first insert and a second insert; the slots are respectively opened on the inner wall of the first sleeve and the inner wall of the second sleeve, the first insert and the second insert are respectively inserted into the inner wall of the slot, the outer wall of the first insert is fixedly connected to the outer wall of the connecting shaft, and the outer wall of the second insert is fixedly connected to the outer wall of the gear shaft.
[0008] Preferably, a positioning block is fixedly connected to the outer wall of the gear shaft, and a positioning hole is inserted into the outer wall of the positioning block, which is located on the inner wall of the connecting shaft.
[0009] Preferably, the inner wall of the connecting shaft and the inner wall of the gear shaft are respectively provided with a first groove and a second groove, and the inner walls of the first groove and the second groove are fitted with sealing rings.
[0010] Preferably, the inner wall of the connecting shaft has a first channel, the inner wall of the gear shaft has a second channel, the end of the first channel is connected to the beginning of the second channel, and the inner wall of the gear shaft has a third channel, the beginning of the third channel is connected to the inner wall of the second channel.
[0011] Preferably, the outer wall of the connecting shaft is provided with a mounting groove at the end away from the gear shaft, and a mounting post is fixedly connected to the end of the gear shaft away from the connecting shaft. The outer wall of the connecting shaft and the outer wall of the mounting post are respectively provided with mounting holes.
[0012] This utility model provides a gear shaft for an automotive steering mechanism. It offers the following advantages: This gear shaft for an automotive steering mechanism, through the engagement of a first sleeve, a second sleeve, a connecting ring, a through hole, bolts, and nuts, allows for individual replacement of the gear shaft. This solves the problem that when the helical teeth on the surface of the gear shaft are severely damaged and require replacement, most gear shafts are integral, necessitating the replacement of the entire shaft, which increases replacement costs. Furthermore, even when the gear shaft still has good performance in its earlier position, it can only be disposed of as scrap, resulting in a significant waste of resources.
[0013] By using the slot, the first insert, and the second insert, the connection structure provides auxiliary support and strengthens the connection when the connecting shaft and the gear shaft rotate. This solves the problem that when the vehicle is frequently turned, the relative rotation angle between the connecting shaft and the gear shaft is prone to deviate, which leads to a decrease in the meshing accuracy of the gear shaft, causing abnormal vibration and noise, and even accelerating the wear of the gear shaft tooth surface. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure;
[0016] Figure 3for Figure 1 A structural schematic diagram of the first sleeve, connecting ring, and bolt;
[0017] Figure 4 for Figure 1 A schematic diagram of the structure of the positioning block, sealing ring, and connecting shaft.
[0018] In the diagram: 1. Connecting shaft; 2. Gear shaft; 3. First sleeve; 4. Second sleeve; 5. Connecting ring; 6. Through hole; 7. Bolt; 8. Nut; 9. Slot; 10. First insert post; 11. Second insert post; 12. Positioning hole; 13. Positioning block; 14. First groove; 15. Second groove; 16. Sealing ring; 17. First channel; 18. Second channel; 19. Third channel; 20. Mounting groove; 21. Mounting hole; 22. Mounting post. Detailed Implementation
[0019] 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.
[0020] When the helical teeth on the surface of the gear shaft in a car steering mechanism are severely damaged and need to be replaced, most gear shafts are integral pieces, requiring the replacement of the entire gear shaft, which increases the replacement cost. At the same time, the gear shaft may still have good performance in the advanced position and can only be disposed of as scrap, resulting in a huge waste of resources.
[0021] In view of this, the present invention provides a gear shaft for automotive steering mechanisms. Through the cooperation between the first sleeve, the second sleeve, the connecting ring, the through hole, the bolt, and the nut, the gear shaft can be replaced individually. This solves the problem that when the helical teeth on the surface of the gear shaft for automotive steering mechanisms are severely damaged and need to be replaced, most gear shafts are integral and require replacement of the entire gear shaft, which increases the replacement cost. At the same time, the gear shaft still has good performance in the early position and can only be disposed of as scrap, resulting in a great waste of resources.
[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly introduced below.
[0023] Example 1, by Figure 1-4It is understood that the gear shaft for an automotive steering mechanism in this case includes a connecting shaft 1, one end of which is fitted with a gear shaft 2. Both the outer wall of the connecting shaft 1 and the outer wall of the gear shaft 2 are provided with replacement devices. The replacement device includes a first sleeve 3, a second sleeve 4, a connecting ring 5, a through hole 6, a bolt 7, and a nut 8. The first sleeve 3 is fitted onto the outer wall of the connecting shaft 1, and the inner wall of the first sleeve 3 is fitted onto the outer wall of the connecting shaft 1. The second sleeve 4 is fitted onto one side of the first sleeve 3, and the second sleeve 4 is fitted onto the outer wall of the gear shaft 2. The inner wall of the second sleeve 4 is fitted onto the outer wall of the gear shaft 2. The outer walls of the first sleeve 3 and the second sleeve 4 are both fixedly connected with a connecting ring 5. The surface of the connecting ring 5 is provided with a through hole 6, and a bolt 7 is provided on the outside of the connecting ring 5. The bolt 7 passes through the through hole 6, and a nut 8 is threaded onto the outer wall of the bolt 7.
[0024] In the specific implementation process, it is worth noting that the connecting shaft 1 and the gear shaft 2 form the gear shaft for the automotive steering mechanism. When the severely damaged gear shaft 2 needs to be replaced, the worker uses a tool to rotate the nut 8, causing the nut 8 to rotate out of the bolt 7. The worker then removes the bolt 7 from the through hole 6, releasing the fixation between the connecting shaft 1 and the gear shaft 2. Then, the worker removes the second sleeve 4 from the gear shaft 2. After that, the worker puts the second sleeve 4 on the new gear shaft 2. After that, the worker moves the first sleeve 3 and the second sleeve 4, bringing the first sleeve 3 and the second sleeve 4 together. At the same time, the connecting ring 5 on the outer wall of the first sleeve 3 and the second sleeve 4 moves. The worker then passes the bolt 7 through the through hole 6 again and rotates the nut 8 back onto the bolt 7, thereby fixing the replaced gear shaft 2 to the connecting shaft 1, realizing the individual replacement of the gear shaft 2.
[0025] Furthermore, a limiting device is provided between the first sleeve 3 and the second sleeve 4; the limiting device includes a slot 9, a first insert 10 and a second insert 11; the slot 9 is respectively opened on the inner wall of the first sleeve 3 and the inner wall of the second sleeve 4, the first insert 10 and the second insert 11 are respectively inserted into the inner wall of the slot 9, the outer wall of the first insert 10 is fixedly connected to the outer wall of the connecting shaft 1, and the outer wall of the second insert 11 is fixedly connected to the outer wall of the gear shaft 2.
[0026] In the specific implementation process, it is worth noting that when the workers put the first sleeve 3 and the second sleeve 4 on the connecting shaft 1 and the gear shaft 2, the first sleeve 3 and the second sleeve 4 drive the slot 9 to move, and insert the slot 9 into the first insert 10 and the second insert 11 respectively. When the connecting shaft 1 rotates, the connecting shaft 1 drives the first insert 10 to rotate, the first insert 10 drives the first sleeve 3 to rotate, thereby driving the second sleeve 4 to rotate, the second sleeve 4 drives the second insert 11 to rotate, and the second insert 11 drives the gear shaft 2 to rotate, so as to provide auxiliary support and strengthen the connection when the connecting shaft 1 and the gear shaft 2 rotate.
[0027] Furthermore, a positioning block 13 is fixedly connected to the outer wall of the gear shaft 2, and a positioning hole 12 is inserted into the outer wall of the positioning block 13. The positioning hole 12 is opened on the inner wall of the connecting shaft 1.
[0028] In the specific implementation process, it is worth noting that when replacing the gear shaft 2, the gear shaft 2 drives the positioning block 13 to move, inserting the positioning block 13 into the positioning hole 12 to achieve positioning of the gear shaft 2.
[0029] Specifically, when the worker places the first sleeve 3 and the second sleeve 4 onto the connecting shaft 1 and the gear shaft 2, the first sleeve 3 and the second sleeve 4 drive the slot 9 to move, inserting the slot 9 into the first insert 10 and the second insert 11 respectively. When it is necessary to replace the severely damaged gear shaft 2, firstly, the worker uses a tool to rotate the nut 8, causing the nut 8 to rotate out of the bolt 7. The worker then removes the bolt 7 from the through hole 6, releasing the fixation between the connecting shaft 1 and the gear shaft 2. Then, the worker removes the second sleeve 4 from the gear shaft 2. Next, the worker places the second sleeve 4 onto the new gear shaft 2, and the gear shaft 2 drives the positioning block 13 to move, thus moving the positioning block 1... Insert the first sleeve 3 into the positioning hole 12. After that, the worker moves the first sleeve 3 and the second sleeve 4 to fit them together. At the same time, the connecting ring 5 on the outer wall of the first sleeve 3 and the second sleeve 4 moves. The worker then passes the bolt 7 through the through hole 6 again and rotates the nut 8 back onto the bolt 7, thereby fixing the replaced gear shaft 2 onto the connecting shaft 1 and completing the replacement of the gear shaft 2. When the connecting shaft 1 rotates, the connecting shaft 1 drives the first insert 10 to rotate, the first insert 10 drives the first sleeve 3 to rotate, thereby driving the second sleeve 4 to rotate, the second sleeve 4 drives the second insert 11 to rotate, and the second insert 11 drives the gear shaft 2 to rotate.
[0030] Example 2, by Figure 1 and 2 It can be seen that the inner wall of the connecting shaft 1 and the inner wall of the gear shaft 2 are respectively provided with a first groove 14 and a second groove 15, and the inner walls of the first groove 14 and the second groove 15 are fitted with sealing rings 16.
[0031] In the specific implementation process, it is worth noting that when installing the connecting shaft 1 and the gear shaft 2, the worker places the sealing ring 16 into the first groove 14. After that, the worker moves the gear shaft 2, which in turn moves the second groove 15. Finally, the other outer wall of the sealing ring 16 is inserted into the second groove 15, improving the sealing performance between the connecting shaft 1 and the gear shaft 2.
[0032] Furthermore, the workers opened a first channel 17 on the inner wall of the connecting shaft 1, opened a second channel 18 on the inner wall of the gear shaft 2, the end of the first channel 17 was connected to the beginning of the second channel 18, and opened a third channel 19 on the inner wall of the gear shaft 2, the beginning of the third channel 19 was connected to the inner wall of the second channel 18.
[0033] In the specific implementation process, it is worth noting that when the car steering mechanism is working with the gear shaft, the lubricating oil enters the first channel 17, then flows through the first channel 17 into the second channel 18, and then flows through the second channel 18 into the third channel 19. Finally, the lubricating oil flows through the third channel 19 to the surface of the gear shaft 2, thereby lubricating the surface of the gear shaft 2 and reducing the friction between the gear shaft 2 and the rack inside the steering mechanism.
[0034] Furthermore, an installation groove 20 is provided at the end of the outer wall of the connecting shaft 1 away from the gear shaft 2, and an installation post 22 is fixedly connected at the end of the gear shaft 2 away from the connecting shaft 1. Installation holes 21 are respectively provided on the outer wall of the connecting shaft 1 and the outer wall of the installation post 22.
[0035] In the specific implementation process, it is worth noting that the workers fix the ends of the connecting shaft 1 and the gear shaft 2 to the parts inside the steering gear housing and the parts inside the steering mechanism through the mounting groove 20, mounting column 22 and mounting hole 21.
[0036] Specifically, the workers fix the ends of the connecting shaft 1 and the gear shaft 2 to the parts inside the steering gear housing and the parts inside the steering mechanism through the mounting groove 20, mounting post 22 and mounting hole 21. When the steering mechanism of the car is working with the gear shaft, the lubricating oil enters the first channel 17, then flows through the first channel 17 into the second channel 18, and then flows through the second channel 18 into the third channel 19. Finally, the lubricating oil flows through the third channel 19 to the surface of the gear shaft 2 to lubricate the surface of the gear shaft 2. At the same time, the sealing ring 16 improves the sealing between the connecting shaft 1 and the gear shaft 2.
[0037] 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 gear shaft for an automotive steering mechanism, comprising a connecting shaft (1), characterized in that: One end of the connecting shaft (1) is fitted with a gear shaft (2), and both the outer wall of the connecting shaft (1) and the outer wall of the gear shaft (2) are provided with replacement devices; The replacement device includes a first sleeve (3), a second sleeve (4), a connecting ring (5), a through hole (6), a bolt (7), and a nut (8); The first sleeve (3) is fitted onto the outer wall of the connecting shaft (1), and the inner wall of the first sleeve (3) is attached to the outer wall of the connecting shaft (1). A second sleeve (4) is attached to one side of the first sleeve (3). The second sleeve (4) is fitted onto the outer wall of the gear shaft (2), and the inner wall of the second sleeve (4) is attached to the outer wall of the gear shaft (2). A connecting ring (5) is fixedly connected to the outer walls of both the first sleeve (3) and the second sleeve (4). A through hole (6) is opened on the surface of the connecting ring (5). A bolt (7) is provided on the outside of the connecting ring (5). The bolt (7) passes through the through hole (6). A nut (8) is threaded onto the outer wall of the bolt (7).
2. The gear shaft for an automotive steering mechanism according to claim 1, characterized in that: Limiting devices are provided between the first sleeve (3) and the second sleeve (4); The limiting device includes a slot (9), a first insert (10), and a second insert (11); The slots (9) are respectively opened on the inner wall of the first sleeve (3) and the inner wall of the second sleeve (4). The inner wall of the slots (9) is respectively connected to the first insert (10) and the second insert (11). The outer wall of the first insert (10) is fixedly connected to the outer wall of the connecting shaft (1), and the outer wall of the second insert (11) is fixedly connected to the outer wall of the gear shaft (2).
3. The gear shaft for an automotive steering mechanism according to claim 1, characterized in that: A positioning block (13) is fixedly connected to the outer wall of the gear shaft (2), and a positioning hole (12) is inserted into the outer wall of the positioning block (13). The positioning hole (12) is opened on the inner wall of the connecting shaft (1).
4. A gear shaft for an automotive steering mechanism according to claim 1, characterized in that: The inner wall of the connecting shaft (1) and the inner wall of the gear shaft (2) are respectively provided with a first groove (14) and a second groove (15), and the inner walls of the first groove (14) and the second groove (15) are fitted with sealing rings (16).
5. A gear shaft for an automotive steering mechanism according to claim 1, characterized in that: The inner wall of the connecting shaft (1) is provided with a first channel (17), the inner wall of the gear shaft (2) is provided with a second channel (18), the end of the first channel (17) is connected to the beginning of the second channel (18), the inner wall of the gear shaft (2) is provided with a third channel (19), and the beginning of the third channel (19) is connected to the inner wall of the second channel (18).
6. A gear shaft for an automotive steering mechanism according to claim 1, characterized in that: The outer wall of the connecting shaft (1) is provided with an installation groove (20) at one end away from the gear shaft (2), and an installation post (22) is fixedly connected to the end of the gear shaft (2) away from the connecting shaft (1). The outer wall of the connecting shaft (1) and the outer wall of the installation post (22) are respectively provided with installation holes (21).