Steering pull rod mechanism and vehicle
By designing a steering lever mechanism with adjustable length, the assembly problems caused by differences in wheelbase and wheelbase of different vehicles are solved, and the platformization of the steering lever is realized, which improves versatility and stability and reduces costs.
Patent Information
- Application Number
- CN202422517215.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The difference in wheelbase and wheelbase of different types of vehicles leads to different lengths of the steering gear rods, resulting in error prevention problems in production line assembly and inability to platform, increasing manufacturing costs.
A steering tie rod mechanism is designed, the inner tie rod member is slidably arranged in the outer tie rod member, and the length is adjusted by adjusting the drive member, and the stable connection between the inner and outer tie rod members is achieved in combination with the anti-turn limit part to adapt to vehicles with different wheelbases and wheelbases.
Improves versatility and stability of the steering lever mechanism, reduces manufacturing costs and reduces failure rates.
Smart Images
Figure CN223086103U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicles, and particularly to a steering tie rod mechanism and a vehicle. Background Art
[0002] With the rapid development of the vehicle industry, the competition in the vehicle market has become increasingly fierce. In order to maintain good competitiveness in the market, each vehicle manufacturer has increasingly implemented the production concept of cost reduction and efficiency improvement. In the production process of cost reduction and efficiency improvement, making vehicle parts platformized and generalized is an important design link. At the same time, to further reduce costs, the manufacturing platform of vehicles often applies to various different types of vehicles. For example, the same platform can apply to different types of vehicles such as minivans, micro trucks, box trucks, and small trucks.
[0003] For different types of vehicles, there are different wheelbases and track widths. The change in the wheelbase will cause the turning diameter of the vehicle to increase or decrease, resulting in certain differences in the tire angle and track width, which will lead to differences in the lengths of the inner and outer tie rods of the steering gear. In this case, the tie rods of the steering gear need to be developed adaptively. However, the outer shapes of the tie rods of the steering gear are basically the same and difficult to distinguish, which leads to the problem of anti-misassembly on the production line. Moreover, the tie rods of the steering gear cannot be platformized.
[0004] Therefore, it is necessary to provide an improved steering tie rod mechanism to solve some or all of the above problems. Utility Model Content
[0005] This application provides a steering tie rod mechanism and a vehicle with strong versatility.
[0006] This application provides a steering tie rod mechanism, including an inner tie rod member, an outer tie rod member, and an adjustment driving member; the outer tie rod member includes an assembly end, an adjustment cavity recessed inward from the assembly end, and a first anti-rotation limiting portion located in the adjustment cavity; the adjustment driving member is located in the adjustment cavity, and the adjustment driving member is respectively connected to the inner tie rod member and the outer tie rod member. The adjustment driving member is used to drive the inner tie rod member to move in the adjustment cavity to adjust the length of the steering tie rod mechanism; the inner tie rod member includes a second anti-rotation limiting portion, and the second anti-rotation limiting portion is slidably matched with the first anti-rotation limiting portion.
[0007] Further, both the second anti-rotation limiting portion and the first anti-rotation limiting portion are in a spline structure, and the inner tie rod member further includes a coating layer covering the second anti-rotation limiting portion.
[0008] Further, the inner pull rod member includes a connecting shaft member and a limiting portion provided on the connecting shaft member. The connecting shaft member extends from the second anti-rotation limiting portion towards the adjusting drive member and is connected to the adjusting drive member. The outer pull rod member includes a gear portion provided in the adjusting cavity. The gear portion can contact the limiting portion to limit the sliding stroke of the inner pull rod member relative to the outer pull rod member.
[0009] Further, the limiting portion includes a first limiting portion and a second limiting portion arranged at intervals. The first limiting portion is arranged adjacent to the second anti-rotation limiting portion, and the second limiting portion is arranged away from the second anti-rotation limiting portion. Both the first limiting portion and the second limiting portion can cooperate with the gear portion, and at least when the gear portion contacts the first limiting portion, the second anti-rotation limiting portion is engaged with the first anti-rotation limiting portion.
[0010] Further, the limiting portion is a groove recessed from the circumferential side of the connecting shaft member, and the gear portion is an elastically deformable mechanism that can be telescopically arranged. When the gear portion corresponds to the limiting portion, a part of the gear portion extends into the limiting portion.
[0011] Further, the gear portion includes a stopper and an elastic member. The outer pull rod member is provided with a receiving cavity recessed from the inner wall of the adjusting cavity. The stopper and the elastic member are located in the receiving cavity, and a part of the stopper can protrude from the receiving cavity to contact the connecting shaft member or the limiting portion. The elastic member is used to provide an elastic force for the stopper.
[0012] Further, the adjusting drive member includes a drive body and a drive rod. The drive body is fixed in the adjusting cavity. One end of the drive rod is rotatably connected to the drive body, and the other end protrudes into the connecting shaft member. The drive body can fix the drive rod to lock the inner pull rod member.
[0013] Further, it further includes a cover. The cover is snap-fitted to the assembly end, and the inner pull rod member passes through the cover.
[0014] The present application also provides a vehicle, including the steering pull rod mechanism as described above.
[0015] Compared with the prior art, in the steering tie rod mechanism of the present application, the inner tie rod member is arranged inside the outer tie rod member, and the inner tie rod member is driven by an adjusting driving member to slide relative to the outer tie rod member, so that the steering tie rod mechanism can be set to different lengths to adapt to vehicles with different wheelbases and track widths, thereby improving the versatility of the steering tie rod mechanism and reducing the manufacturing cost. At the same time, the second anti-rotation limiting portion cooperates with the first anti-rotation limiting portion to fix the inner tie rod member and the outer tie rod member in the circumferential direction, prevent the inner tie rod member and the outer tie rod member from rotating relative to each other, improve the stability of the steering tie rod mechanism, and reduce the failure rate.
[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.
[0018] Figure 1 is a partial cross-sectional view of the steering tie rod mechanism of the present application.
[0019] Figure 2 is Figure 1 a partial enlarged view of part A in
[0020] Figure 3 is a schematic diagram of the coating layer provided on the second anti-rotation limiting portion in the present application.
[0021] Figure 4 is a schematic diagram of the separation of the inner tie rod member and the outer tie rod member in the present application.
[0022] Figure 5 is a partial schematic diagram of the inner tie rod member in the present application.
[0023] Figure 6 is Figure 1 a partial cross-sectional view of the gear position portion in the steering tie rod mechanism located at the first limiting portion.
[0024] Figure 7 is Figure 1 a partial cross-sectional view of the gear position portion in the steering tie rod mechanism located at the second limiting portion.
[0025] Figure 8 is Figure 7 a partial enlarged view of part B in
[0026] Figure 9 is Figure 7 a cross-sectional view of the steering tie rod mechanism along C-C in
[0027] Description of the attached reference numerals: 1 - inner tie rod member; 11 - second anti-rotation limiting portion; 12 - coating layer; 13 - connecting shaft member; 14 - limiting portion; 141 - first limiting portion; 1411 - guiding surface; 1412 - abutting surface; 1413 - limiting surface; 142 - second limiting portion; 15 - outer connecting rod; 2 - outer tie rod member; 21 - assembly end; 22 - adjusting cavity; 23 - first anti-rotation limiting portion; 24 - blocking portion; 241 - blocking member; 242 - elastic member; 25 - accommodating cavity; 26 - connecting ball head; 3 - adjusting driving member; 31 - driving body; 32 - driving rod; 4 - cover. Detailed implementation manners
[0028] Here, the technical solutions in the embodiments (or "implementation manners") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0029] If there are terms related to directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement conditions between components in a specific posture (as shown in the accompanying drawings); if this specific posture changes, then the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.
[0030] As Figure 1 shown, the steering tie rod mechanism of the present application includes an inner tie rod member 1, an outer tie rod member 2, an adjusting driving member 3, and a cover 4. A part of the inner tie rod member 1 is slidably disposed inside the outer tie rod member 2, and the adjusting driving member 3 is disposed inside the outer tie rod member 2 and is respectively connected to the outer tie rod member 2 and the inner tie rod member 1. The adjusting driving member 3 can drive the inner tie rod member 1 to slide relative to the outer tie rod member 2 and lock the inner tie rod member 1 and the outer tie rod member 2.
[0031] With such a setting, the steering tie rod mechanism can be set to different lengths to be applicable to vehicles with different wheelbases and track widths, thereby improving the versatility of the steering tie rod mechanism and reducing the manufacturing cost. And the inner tie rod member 1 and the outer tie rod member 2 can be locked by the adjusting driving member 3, making the fixation between the inner tie rod member 1 and the outer tie rod member 2 more firm and increasing the stability of the steering tie rod mechanism.
[0032] In one embodiment, the sliding stroke of the inner tie rod member 1 relative to the outer tie rod member 2 does not exceed 40 mm. With this setting, the adjustment range of the steering tie rod mechanism can be applicable to more different types of vehicles, improving the general applicability of the steering tie rod mechanism. At the same time, since the 40-mm adjustment stroke of the steering tie rod mechanism is already applicable to most vehicles, it can avoid excessive additional design caused by too long a sliding stroke of the inner tie rod member 1 relative to the outer tie rod member 2, thus increasing the manufacturing cost.
[0033] Further in combination with Figure 2 and Figure 3 As shown, the inner tie rod member 1 includes a second anti-rotation limiting portion 11, a coating layer 12, a connecting shaft member 13, a limiting portion 14, and an outer connecting rod 15. The second anti-rotation limiting portion 11 is connected between the connecting shaft member 13 and the outer connecting rod 15. The second anti-rotation limiting portion 11 is engaged in the outer tie rod member 2 to prevent the inner tie rod member 1 from rotating relative to the outer tie rod member 2, and the second anti-rotation limiting portion 11 can also guide the inner tie rod member 1 to slide relative to the outer tie rod member 2.
[0034] The steering tie rod mechanism of the present application realizes double rotation limiting of the inner tie rod member 1 and the outer tie rod member 2 through the second anti-rotation limiting portion 11 and the adjustment driving member 3, further improving the stability of the steering tie rod mechanism and reducing the failure rate.
[0035] The second anti-rotation limiting portion 11 is a spline structure. With this setting, the second anti-rotation limiting portion 11 can have multiple teeth, more precisely preventing the inner tie rod member 1 from rotating and improving the overall precision of the steering tie rod mechanism.
[0036] The coating layer 12 is provided on the second anti-rotation limiting portion 11 to improve the smoothness and wear resistance when the second anti-rotation limiting portion 11 slides relative to the outer tie rod member 2, and at the same time reduce the gap between the second anti-rotation limiting portion 11 and the outer tie rod member 2, thereby reducing the entry of impurities such as dust and water mist into the outer tie rod member 2. The coating layer 12 is preferably but not limited to nylon material.
[0037] The connecting shaft member 13 extends from the second anti-rotation limiting portion 11 towards the adjustment driving member 3. The connecting shaft member 13 is located inside the outer tie rod member 2 and is connected to the adjustment driving member 3. The limiting portion 14 is provided on the connecting shaft member 13, and the limiting portion 14 is a groove recessed inward from the circumferential side of the connecting shaft member 13. The limiting portion 14 is arranged around the circumferential side of the connecting shaft member 13. There are two limiting portions 14, and they are arranged at intervals on the connecting shaft member 13. The distance between the two limiting portions 14 is equal to the sliding stroke of the inner tie rod member 1 relative to the outer tie rod member 2.
[0038] Further in combination with Figure 4 and Figure 5As shown, the limiting part 14 includes a first limiting part 141 and a second limiting part 142 which are arranged at intervals. The first limiting part 141 is arranged adjacent to the second anti-rotation limiting part 11, and the second limiting part 142 is arranged away from the second anti-rotation limiting part 11. The distance between the first limiting part 141 and the second limiting part 142 is equal to the stroke of the inner pull rod member 1 sliding relative to the outer pull rod member 2, and does not exceed 40 mm.
[0039] The structure of the first limiting part 141 is approximately the same as that of the second limiting part 142, and the first limiting part 141 and the second limiting part 142 are arranged oppositely. In this article, taking the first limiting part 141 as an example, the structure of the first limiting part 141 will be described. The first limiting part 141 includes a guiding surface 1411, an abutting surface 1412, and a limiting surface 1413. The guiding surface 1411 is inclined, the abutting surface 1412 is connected between the guiding surface 1411 and the limiting surface 1413, and the limiting surface 1413 is perpendicular to the axial direction of the connecting shaft member 13.
[0040] The outer connecting rod 15 can be used to connect with vehicle components.
[0041] Further in combination with Figure 4 、 Figures 6 to 8 As shown, in an embodiment, the outer pull rod member 2 includes an assembly end 21, an adjustment cavity 22, a first anti-rotation limiting part 23, a gear position part 24, a receiving cavity 25, and a connecting ball head 26. The adjustment cavity 22 is recessed from the assembly end 21, and part of the inner pull rod member 1 is slidably arranged in the adjustment cavity 22. Specifically, the connecting shaft member 13, the limiting part 14, and part of the second anti-rotation limiting part 11 can all be located in the adjustment cavity 22. The first anti-rotation limiting part 23 is located in the adjustment cavity 22, and the first anti-rotation limiting part 23 extends from the assembly end 21 into the adjustment cavity 22.
[0042] The first anti-rotation limiting part 23 and the second anti-rotation limiting part 11 can be slidably and cooperatively arranged, and along the circumferential direction of the second anti-rotation limiting part 11, the first anti-rotation limiting part 23 and the second anti-rotation limiting part 11 are fixed to each other. And through the first anti-rotation limiting part 23 to limit the circumferential rotation of the second anti-rotation limiting part 11 and to guide the axial sliding of the second anti-rotation limiting part 11, the adjustment of the inner pull rod member 1 relative to the outer pull rod member 2 is more stable.
[0043] The first anti-rotation limiting part 23 is also a spline structure so that the first anti-rotation limiting part 23 can be closely matched with the second anti-rotation limiting part 11. The coating layer 12 can eliminate the gap between the second anti-rotation limiting part 11 and the first anti-rotation limiting part 23.
[0044] In another embodiment, the second anti-rotation limiting portion 11 has a columnar structure, and the cross-section of the second anti-rotation limiting portion 11 can be an elliptical cylinder, a triangle, a rectangle or other structures. The first anti-rotation limiting portion 23 has a cavity structure, and the cross-section of the first anti-rotation limiting portion 23 is adapted to the second anti-rotation limiting portion 11 and is set as an elliptical cylinder, a triangle, a rectangle or other structures. Further, on the premise that the second anti-rotation limiting portion 11 can be limited in the first anti-rotation limiting portion 23, the second anti-rotation limiting portion 11 and the first anti-rotation limiting portion 23 can also be in other special-shaped structures, which will not be elaborated herein.
[0045] In one embodiment, the gear position portion 24 is located in the adjustment cavity 22. The gear position portion 24 can contact the limiting portion 14 to limit the sliding stroke of the inner pull rod member 1 relative to the outer pull rod member 2, and at the same time prevent the inner pull rod member 1 from falling off the outer pull rod member 2. The gear position portion 24 is an elastic mechanism with a telescopic setting. When the gear position portion 24 corresponds to the limiting portion 14, a part of the gear position portion 24 extends to the limiting portion 14 so that the gear position portion 24 is engaged with the limiting portion 14, thereby limiting the sliding stroke of the inner pull rod member 1 and preventing the inner pull rod member 1 from falling off. To improve the stability of the gear position portion 24 in limiting the inner pull rod member 1, a plurality of gear position portions 24 are provided and are arranged at intervals in the circumferential direction of the connecting shaft member 13 in the adjustment cavity 22.
[0046] The gear position portion 24 can cooperate with the first limiting portion 141 or the second limiting portion 142. Specifically, when the inner pull rod member 1 extends relative to the outer pull rod member 2 to the limit position, the gear position portion 24 cooperates with the second limiting portion 142. When the inner pull rod member 1 contracts relative to the outer pull rod member 2 to the limit position, the gear position portion 24 cooperates with the first limiting portion 141. At least when the gear position portion 24 contacts the first limiting portion 141, the second anti-rotation limiting portion 11 is engaged with the first anti-rotation limiting portion 23. Further, when the gear position portion 24 contacts the second limiting portion 142, the second anti-rotation limiting portion 11 is located outside the adjustment cavity 22. It should be noted that, to further improve the stability of the inner pull rod member 1 when sliding relative to the outer pull rod member 2, the length of the second anti-rotation limiting portion 11 is greater than the sliding stroke of the inner pull rod member 1 relative to the outer pull rod member 2, that is, when the gear position portion 24 contacts the second limiting portion 142, the second anti-rotation limiting portion 11 still cooperates with the first anti-rotation limiting portion 23.
[0047] Further combined with Figure 9As shown, the stopper 24 includes a stopper 241 and an elastic member 242. The accommodating chamber 25 is concavely arranged on the inner wall of the self-adjusting chamber 22. The stopper 241 and the elastic member 242 are located in the accommodating chamber 25, and part of the stopper 241 can protrude out of the accommodating chamber 25 to contact the connecting shaft 13 or the limiting portion 14. Specifically, if the inner pull rod 1 is in an extreme position of extension or contraction relative to the outer pull rod 2, the stopper 241 contacts the limiting portion 14; and in a non-extreme position, the stopper 241 contacts the connecting shaft 13. One end of the stopper 241 is located in the accommodating chamber 25 and contacts the elastic member 242. The elastic member 242 is used to provide elastic force for the stopper 241.
[0048] The structural construction of the first limiting portion 141 and the second limiting portion 142 makes it more convenient and efficient for the blocking portion 24 to limit the movement of the inner pull rod 1. In this article, the cooperation between the blocking portion 24 and the first limiting portion 141 is taken as an example for explanation. The blocking member 241 moves from the guide surface 1411 to the abutting surface 1412, and abuts against the abutting surface 1412, and the limiting surface 1413 contacts the blocking member 241 to prevent the blocking member 241 from continuing to move. The guide surface 1411 is tilted to facilitate the blocking member 241 to easily slide in and out of the limiting portion 14. In order to make the blocking member 241 more labor-saving when cooperating with the limiting portion 14, the blocking member 241 is preferably a ball structure. Of course, the blocking member 241 can also be a cylindrical, square column or other structure.
[0049] In another embodiment, the limiting portion 14 is disposed in the adjusting cavity 22 and is recessed inward from the inner wall of the adjusting cavity 22. The stopper 24 is disposed on the connecting shaft 13, and when the inner rod 1 slides relative to the outer rod 2, one end of the stopper 241 abuts against the inner wall of the adjusting cavity 22. When the inner rod 1 is limited, part of the stopper 241 is located in the limiting portion 14.
[0050] In another embodiment, the limiting portion 14 is a groove that is concavely arranged on the circumference of the connecting shaft 13, and only one limiting portion 14 is provided. The stopper 24 is a claw structure and is arranged on the inner wall of the adjustment cavity 22. The stopper 24 is always located in the limiting portion 14, and the inner pull rod 1 contacts the stopper 24 through the inner wall of the limiting portion 14 to limit the sliding stroke. Of course, the limiting portion 14 can also be arranged on the inner wall of the adjustment cavity 22, and the stopper 24 is arranged on the circumference of the connecting shaft 13.
[0051] In one embodiment, the connecting ball head 26 is located at an end of the outer tie rod 2 facing away from the inner tie rod 1 , and the connecting ball head 26 can be connected to a vehicle component.
[0052] In one embodiment, the adjusting driving member 3 is located in the adjusting cavity 22, and the adjusting driving member 3 is respectively connected to the inner pull rod member 1 and the outer pull rod member 2. The adjusting driving member 3 is used to drive the inner pull rod member 1 to move and lock the inner pull rod member 1. The adjusting driving member 3 is preferably a motor. With such a setting, the automation degree of the steering tie rod mechanism adjustment is improved, and due to the characteristics of the motor such as fast response and precise rotation, the inner pull rod member 1 moves more quickly and precisely relative to the outer pull rod member 2, thereby improving the adjustment precision of the steering tie rod mechanism and increasing the service life. At the same time, by locking the inner pull rod member 1 and the outer pull rod member 2 through the adjusting driving member 3, the fixation between the inner pull rod member 1 and the outer pull rod member 2 is made more firm, increasing the stability of the steering tie rod mechanism.
[0053] In another embodiment, the adjusting driving member 3 can also be structures such as a cylinder, a hydraulic cylinder, etc.
[0054] Combined again Figure 6 and Figure 7 As shown, in one embodiment, the adjusting driving member 3 includes a driving body 31 and a driving rod member 32. The connecting shaft member 13 is provided with a threaded hole (not shown). The driving body 31 is fixed in the adjusting cavity 22. The driving rod member 32 is provided with an external thread (not shown), and one end of the driving rod member 32 is connected to the driving body 31, and the other end is arranged in the threaded hole of the connecting shaft member 13. The driving body 31 can drive the driving rod member 32 to rotate. Further, when the driving body 31 drives the driving rod member 32 to rotate, the driving rod member 32 rotates relative to the inner pull rod member 1, thereby pushing the inner pull rod member 1 to slide relative to the outer pull rod member 2. The driving body 31 can also fix the driving rod member 32 to lock the inner pull rod member 1.
[0055] The adjusting driving member 3 includes a quick-acting end (not shown) and a fixed-acting end (not shown). When current flows through the quick-acting end and the fixed-acting end, reaction forces are respectively generated to drive the driving rod member 32 to rotate, thereby pushing the inner pull rod member 1 to move relative to the outer pull rod member 2.
[0056] The cover 4 is snap-fitted to the assembly end 21, and the inner pull rod member 1 passes through the cover 4. The cover 4 is used to close the adjusting cavity 22 to prevent impurities such as water mist and dust from entering the adjusting cavity 22.
[0057] Before leaving the factory, the platform vehicle models (such as minivans, micro trucks, box trucks, small trucks, etc.) applied can be set in the adjusting driving member 3 of the steering tie rod mechanism of the present application, so that the adjusting driving member 3 can be adjusted in length during assembly to adapt to different vehicle models.
[0058] Specifically, when manufacturing models such as minivans, micro trucks, box trucks, and small trucks within the manufacturing platform, the mobile terminal sends the vehicle configuration code of the corresponding model into the adjustment driving member 3 at this time, and the driving body 31 will drive the driving rod member 32 to rotate, causing the inner pull rod member 1 to slide relative to the outer pull rod member 2 until the wheelbase of the corresponding model is adjusted, then stop working and lock.
[0059] The present application also provides a vehicle, including the steering tie rod mechanism as described above.
[0060] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A tie rod mechanism, characterized in that, It includes an inner tie rod member, an outer tie rod member and an adjusting driving member; the outer tie rod member includes an assembly end, an adjusting cavity recessed from the assembly end, and a first anti-rotation limiting portion located in the adjusting cavity. The adjusting driving member is located in the adjusting cavity, and the adjusting driving member is respectively connected to the inner tie rod member and the outer tie rod member. The adjusting driving member is used to drive the inner tie rod member to move in the adjusting cavity to adjust the length of the steering tie rod mechanism; the inner tie rod member includes a second anti-rotation limiting portion, and the second anti-rotation limiting portion is slidably matched with the first anti-rotation limiting portion.
2. The tie rod mechanism according to claim 1, characterized in that, Both the second anti-rotation limiting portion and the first anti-rotation limiting portion are in a spline structure, and the inner tie rod member further includes a coating layer covering the second anti-rotation limiting portion.
3. The tie rod mechanism according to claim 1, characterized in that, The inner tie rod member includes a connecting shaft member and a limiting portion provided on the connecting shaft member. The connecting shaft member extends from the second anti-rotation limiting portion towards the adjusting driving member and is connected to the adjusting driving member. The outer tie rod member includes a blocking portion provided in the adjusting cavity; the blocking portion can contact the limiting portion to limit the sliding stroke of the inner tie rod member relative to the outer tie rod member.
4. The steering tie rod mechanism according to claim 3, wherein, The limiting portion includes a first limiting portion and a second limiting portion arranged at intervals; the first limiting portion is arranged adjacent to the second anti-rotation limiting portion, and the second limiting portion is arranged away from the second anti-rotation limiting portion; both the first limiting portion and the second limiting portion can cooperate with the blocking portion, and at least when the blocking portion contacts the first limiting portion, the second anti-rotation limiting portion is engaged with the first anti-rotation limiting portion.
5. The steering tie rod mechanism according to claim 3, characterized in that, The limiting portion is a groove recessed from the circumferential side of the connecting shaft member, and the blocking portion is an elastically deformable mechanism; when the blocking portion corresponds to the limiting portion, a part of the blocking portion extends into the limiting portion.
6. The tie rod mechanism according to claim 5, wherein, The blocking portion includes a blocking piece and an elastic member; the outer tie rod member is provided with a receiving cavity recessed from the inner wall of the adjusting cavity. The blocking piece and the elastic member are located in the receiving cavity, and a part of the blocking piece can protrude from the receiving cavity to contact the connecting shaft member or the limiting portion; the elastic member is used to provide an elastic force for the blocking piece.
7. The tie rod mechanism according to claim 3, characterized in that The adjusting driving member includes a driving body and a driving rod; the driving body is fixed in the adjusting cavity, one end of the driving rod is rotatably connected to the driving body, and the other end protrudes into the connecting shaft member; the driving body can fix the driving rod to lock the inner tie rod member.
8. The steering tie rod mechanism according to claim 1, characterized in that, It further includes a cover; the cover is snap-fitted to the assembly end, and the inner tie rod member passes through the cover.
9. A vehicle, characterized in that, It includes the steering tie rod mechanism according to any one of claims 1 to 8.