Steering tie rod, steering tie rod assembly and vehicle

Abstract

This invention discloses a steering tie rod, a steering tie rod assembly, and a vehicle. The steering tie rod includes a tie rod body, a ball joint, and a push block. Both the ball joint and the push block are connected to the tie rod body. The ball joint is located at one end of the tie rod body, and the push block protrudes from the outer peripheral surface of the tie rod body, having a pushing surface. One end of the ball joint is open to form a release outlet for a ball head to pass through. The pushing surface is inclined relative to a predetermined surface, and gradually inclines towards the predetermined surface along the direction of the release outlet. The predetermined surface passes through the centerline of the ball joint and the centerline of the tie rod body. The steering tie rod of this invention can improve the safety of vehicles equipped with it.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically to a steering tie rod, a steering tie rod assembly, and a vehicle. Background Technology

[0002] To ensure functional requirements, vehicle steering tie rods possess high stiffness and strength, and their connection to related components is also robust. In a minor offset collision, the tie rod is unlikely to fail or detach, preventing the steering knuckle and wheels connected to it from being pulled towards the passenger compartment. This not only increases the risk of minor offset collisions and injury to occupants but also obstructs energy absorption, hindering the effective release of impact energy and potentially causing further injury. Therefore, there is a pressing need to design a steering tie rod that, without compromising stiffness, detaches from the steering knuckle in a minor offset collision, preventing the steering knuckle and wheels from falling towards the passenger compartment and thus improving vehicle safety. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, the present invention proposes a steering tie rod to improve the safety of vehicles equipped with the steering tie rod.

[0005] The steering tie rod of the present invention includes a tie rod body, a ball socket, and a push block. The ball socket and the push block are both connected to the tie rod body. The ball socket is disposed at one end of the tie rod body. The push block protrudes from the outer peripheral surface of the tie rod body and has a pushing surface.

[0006] The ball socket has an opening at one end to form a release outlet through which the ball head passes. The push surface is arranged at an angle relative to the preset surface, and the push surface gradually tilts towards the preset surface along the direction of the release outlet. The preset surface passes through the center line of the ball socket and the center line of the pull rod body.

[0007] Optionally, the angle between the push surface and the preset surface is 40° to 50°; and / or, the push block is generally located on the same side of the preset surface in the thickness direction, and a portion of the push block protrudes from the outer peripheral surface of the pull rod body along the orientation of the release outlet.

[0008] Optionally, the pull rod body includes a first pull rod and a second pull rod, the first pull rod is connected to the second pull rod, the ball socket is located at the end of the second pull rod away from the first pull rod, and the push block is located on the second pull rod.

[0009] Optionally, the pusher has a first side surface, which is located on one side of the push surface in the extension direction of the center line of the ball socket. At least a portion of the first side surface is inclined to form a first clearance surface, which gradually inclines towards the preset surface in a direction away from the release outlet. Alternatively, the pusher has a second side surface and a third side surface arranged opposite to each other along the length of the pull rod body. The push surface is located between the second side surface and the third side surface. The second side surface faces the ball socket, and at least a portion of the second side surface is inclined to form a second clearance surface, which gradually inclines away from the ball socket in a direction away from the preset surface.

[0010] Optionally, the push block is located at the end of the second pull rod near the first pull rod.

[0011] Optionally, the push block has a dimension of 26mm to 31mm in the length direction of the pull rod body.

[0012] Optionally, the second pull rod is sleeved on the first pull rod, and the first pull rod is movably connected to the second pull rod along its length direction; the push block has a slit extending along the length direction of the second pull rod, the slit dividing the push block into a first part and a second part, the slit penetrating the second pull rod towards its inner side, the steering pull rod including a locking member, both the first part and the second part being connected to the locking member, and at least one of the first part and the second part being movable relative to the locking member along the width direction of the slit.

[0013] Optionally, the first part is provided with a first threaded hole, and the second part is provided with a second threaded hole, the second threaded hole being provided corresponding to the first threaded hole;

[0014] The locking component includes a screw, and both the first threaded hole and the second threaded hole are threadedly connected to the screw.

[0015] Optionally, the pushing surface is located on the side of the first portion facing away from the second portion, the first threaded hole is a blind hole, and the opening of the first threaded hole faces the second portion; and / or

[0016] The locking element includes a screwing portion for engaging with a tool, the screwing portion being located on the side of the second portion away from the first portion.

[0017] Optionally, the locking member includes a stop portion disposed on the side of the second portion away from the first portion, the stop portion having a first stop surface facing the second portion;

[0018] The second part has a boss on the side away from the first part, and the surface of the boss facing away from the first part forms a second stop surface, and the first stop surface abuts against the second stop surface in the direction toward the first part.

[0019] Optionally, the end of the first pull rod near the second pull rod is provided with an external thread, and the end of the second pull rod near the first pull rod is provided with an internal thread. The external thread and the internal thread are threadedly connected, and at least a portion of the internal thread is provided on the push block.

[0020] Optionally, the width of the gap is 2.5mm to 3.5mm; and / or, the gap extends along the length of the second tie rod to the second tie rod.

[0021] The steering tie rod assembly of the present invention includes:

[0022] Steering tie rod, wherein the steering tie rod is any of the steering tie rods described above;

[0023] A ball-end club, comprising a shaft and a ball end connected to the shaft, the ball end being disposed at one end of the shaft and rotatably connected to the ball socket.

[0024] The vehicle of the present invention includes:

[0025] Steering tie rod assembly, wherein the steering tie rod assembly is any of the steering tie rod assemblies described above (10);

[0026] The steering gear and steering knuckle are provided, with the end of the tie rod furthest from the ball joint rotatably connected to the steering gear, and the ball joint connected to the steering knuckle.

[0027] When the steering tie rod of the present invention is used in a vehicle, the end of the steering tie rod away from the ball joint is rotatably connected to the steering gear, the ball joint of the steering tie rod is rotatably connected to the ball head of the ball joint rod, and the body of the ball joint rod is connected to the steering knuckle. When the vehicle has a small-biased collision with a colliding object in a direction perpendicular to the preset plane, the colliding object will contact the pushing surface of the push block and push the pushing surface in a direction perpendicular to the preset plane. Since the pushing surface is arranged at an angle relative to the preset plane and gradually tilts towards the preset plane along the direction of the disengagement outlet, the pushing force exerted by the colliding object on the pushing surface can be decomposed into a first component force perpendicular to the pushing surface and a second component force perpendicular to the first component force. Among them, the first component force causes the steering tie rod to have a tendency to rotate away from the ball joint rod, so that the ball head of the ball joint rod can disengage through the disengagement outlet of the ball joint, that is, the ball joint rod is disengaged from the steering tie rod, thereby causing the steering knuckle to disengage from the steering tie rod, preventing the steering knuckle and the wheel connected to the steering knuckle from falling into the passenger compartment, and improving the safety of the vehicle with this steering tie rod. Attached Figure Description

[0028] Figure 1 This is a perspective view of a steering tie rod assembly according to an embodiment of the present invention.

[0029] Figure 2 yes Figure 1 Side view of the second tie rod.

[0030] Figure 3 yes Figure 1 A schematic diagram of the local structure at the push block.

[0031] Figure 4 This is a partial structural schematic diagram of a vehicle according to an embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of another partial structure of a vehicle according to an embodiment of the present invention.

[0033] Figure 6 This is a partial structural diagram of a vehicle colliding with a barrier according to an embodiment of the present invention.

[0034] Figure 7 yes Figure 6 A diagram showing the change in the state of the steering linkage after a vehicle collides with an obstacle.

[0035] Figure label:

[0036] 10. Steering tie rod assembly;

[0037] 1. Steering tie rod; 11. Tie rod body; 111. First tie rod; 1111. External thread; 112. Second tie rod; 1121. Internal thread; 12. Ball socket; 121. Disengagement outlet; 13. Push block; 131. Pushing surface; 132. First side surface; 1321. First clearance surface; 133. Second side surface; 1331. Second clearance surface; 134. Third side surface; 135. Connecting surface; 136. Gap; 137. First part; 138. Second part; 139. Boss; 1391. Second stop surface; 14. Preset surface;

[0038] 2. Club head; 21. Club shaft; 22. Club head;

[0039] 3. Locking component; 31. Tightening part; 32. Stopping part; 321. First stopping surface;

[0040] 20. Steering knuckle;

[0041] 30. Arm swing;

[0042] 40. Wheel;

[0043] 50. Barrier. Detailed Implementation

[0044] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0045] like Figures 1 to 3 As shown, the steering tie rod 1 of this embodiment includes a tie rod body 11, a ball joint 12 and a pusher block 13 connected to the tie rod body 11. The ball joint 12 is disposed at one end of the tie rod body 11, and the pusher block 13 protrudes from the outer peripheral surface of the tie rod body 11, having a pushing surface 131. One end of the ball joint 12 is open to form a release outlet 121 through which the ball head 22 passes. The pushing surface 131 is inclined relative to the preset surface 14, and the pushing surface 131 gradually inclines towards the preset surface 14 along the orientation of the release outlet 121, for example, as... Figure 1 As shown, the sharp angle between the pushing surface 131 and the preset surface 14 is α. Wherein, as... Figure 1 As shown, the preset surface 14 passes through the center line m of the ball socket 12 and the center line n of the pull rod body 11.

[0046] like Figure 6 and Figure 7 As shown, when the steering tie rod 1 is used in a vehicle, it is connected to the steering knuckle 20 via a ball joint 2. The ball joint 2 includes a rod body 21 and a ball joint 22 connected to the rod body 21. The ball joint 22 is located at one end of the rod body 21 and is rotatably connected to a ball socket 12. The ball socket 12 may have two openings, with the opening facing the ball joint 2 forming a disengagement outlet 121.

[0047] When the steering tie rod 1 of this embodiment of the invention is used in a vehicle, the end of the steering tie rod 1 away from the ball joint 12 is rotatably connected to the steering gear, such as... Figure 6 and Figure 7 As shown, the ball joint 12 of the steering tie rod 1 is rotatably connected to the ball joint 22 of the ball joint 2, and the rod body 21 of the ball joint 2 is connected to the steering knuckle 20. When the vehicle has a small-biased collision with a collision object in a direction perpendicular to the preset plane 14, the collision object (e.g., such as...) Figure 6 The barrier 50 in the middle will contact the pushing surface 131 of the pusher 13 and push the pushing surface 131 in a direction perpendicular to the preset surface 14, for example along... Figure 7The push surface 131 is pushed in the direction of the center arrow P. Since the push surface 131 is inclined relative to the preset surface 14 and gradually tilts towards the preset surface 14 along the direction of the disengagement outlet 121, the pushing force applied to the push surface 131 by the colliding object can be decomposed into a first component force perpendicular to the push surface 131 and a second component force perpendicular to the first component force. Among them, the first component force causes the steering tie rod 1 to have a tendency to rotate away from the body 21 of the ball joint 2, so that the ball head 22 of the ball joint 2 can be disengaged through the disengagement outlet 121 of the ball socket 12, that is, the ball joint 2 can be disengaged from the steering tie rod 1, thereby causing the steering knuckle 20 to be disengaged from the steering tie rod 1, preventing the steering knuckle 20 and the wheel 40 connected to the steering knuckle 20 from falling towards the passenger compartment, and improving the safety of the vehicle with the steering tie rod 1.

[0048] To make the technical solution of this application easier to understand, the following describes the technical solution of this application further by taking the extension direction of the rod 21 as consistent with the up and down direction, the extension direction of the steering tie rod 1 as consistent with the left and right direction, and the thickness direction of the preset surface 14 as consistent with the front and back direction.

[0049] For example, such as Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the ball socket 12 is located at the right end of the tie rod body 11, and the ball head 22 is located at the lower end of the rod body 21. The upper opening of the ball socket 12 forms a release outlet 121. The push block 13 protrudes forward from the outer circumferential surface of the tie rod body 11, and the push surface 131 faces forward and gradually tilts backward in an upward direction. When a vehicle with this steering tie rod 1 has a small-amplitude collision with a colliding object, the pushing force exerted by the colliding object on the push surface 131 can be decomposed into a first component force perpendicular to the push surface 131 and a second component force perpendicular to the first component force. The first component force causes the steering tie rod 1 to have a downward rotational tendency, allowing the ball head 22 to disengage through the release outlet 121 of the ball socket 12, thus allowing the ball head rod 2 to disengage from the steering tie rod 1.

[0050] Optionally, the angle between the push surface 131 and the preset surface 14 is 40° to 50°.

[0051] Through testing with physical samples, it was verified that when the angle between the pushing surface 131 and the preset surface 14 is greater than 50°, the first component force is too small, making it difficult for the steering tie rod 1 to rotate away from the rod body 21 under the action of the first component force, ultimately resulting in the steering tie rod 1 and the ball joint 2 being difficult to separate in time. When the angle between the pushing surface 131 and the preset surface 14 is less than 40°, and the dimension of the pushing surface 131 in the extension direction of the rod body 21 is constant, the dimension of the push block 13 in the direction perpendicular to the preset surface 14 is too small, causing the colliding object to fail to contact the pushing surface 131 of the push block 13 in time, ultimately resulting in the steering tie rod 1 and the ball joint 2 being difficult to separate in time. That is, when the angle between the pushing surface 131 and the preset surface 14 is less than 40° or greater than 50°, the steering tie rod 1 and the ball joint 2 will be difficult to separate in time.

[0052] For example, the ball head 22 is located at the lower end of the shaft 21, and the ball socket 12's release outlet 121 faces downwards. The push block 13 protrudes forward from the outer circumference of the pull rod body 11, and the push surface 131 faces forward, gradually tilting backwards from bottom to top. When the angle between the push surface 131 and the preset surface 14 is greater than 50°, that is, when the angle between the push surface 131 and the vertical direction is greater than 50°, the aforementioned first component force is too small, causing the steering pull rod 1 to have difficulty generating a downward rotational tendency under the action of the first component force. When the angle between the push surface 131 and the preset surface 14 is less than 40°, and the size of the push surface 131 in the front-back direction is constant, the size of the push block 13 in the front-back direction is too small, causing the colliding object to fail to contact the push surface 131 of the push block 13 in time.

[0053] By setting the angle between the push surface 131 and the preset surface 14 to 40° to 50°, while ensuring a large first component force, the colliding object can contact the push surface 131 in time, thereby causing the steering tie rod 1 to separate from the ball joint 2 in time, and then causing the steering knuckle 20 to be pulled away from the steering tie rod 1 in time. This more effectively prevents the steering knuckle 20 and the wheel 40 connected to the steering knuckle 20 from falling into the passenger compartment, further improving the safety of vehicles with this steering tie rod 1.

[0054] Optionally, the push block 13 is entirely disposed on the same side of the preset surface 14 in the thickness direction. A portion of the push block 13 protrudes from the outer peripheral surface of the pull rod body 11 along the direction of the release port 121.

[0055] For example, such as Figure 2 As shown, the push block 13 is positioned on the front side of the preset surface 14. The push block 13 also has a connecting surface 135, which protrudes upward from the outer peripheral surface of the pull rod body 11. The two ends of the connecting surface 135 are connected to the push surface 131 and the outer peripheral surface of the pull rod body 11, respectively.

[0056] It is understood that the aforementioned pushing surface 131 is entirely located on the same side of the thickness direction of the preset surface 14, and the part of the push block 13 that functions is mainly the pushing surface 131. By placing the push block 13 entirely on the same side of the thickness direction of the preset surface 14, while ensuring the function of the push block 13—that is, ensuring that the push block 13 can be pushed by the colliding object in the event of a minor eccentric collision, thereby causing the steering tie rod 1 to separate from the ball joint 2—it is beneficial to reduce the overall volume of the push block 13, thus reducing the weight and cost of the steering tie rod 1. A portion of the push block 13 protrudes upward from the outer peripheral surface of the tie rod body 11, which allows for a larger area of ​​the pushing surface 131, facilitating timely contact between the colliding object and the pushing surface 131, thereby enabling the steering tie rod 1 to separate from the ball joint 2 in a timely manner, further improving the safety of vehicles equipped with this steering tie rod 1.

[0057] Of course, in other embodiments, the pusher 13 may be partially disposed on one side of the thickness direction of the preset surface 14, and the other part may be disposed on the other side of the thickness direction of the preset surface 14.

[0058] In some embodiments, such as Figure 1 As shown, the pull rod body 11 includes a first pull rod 111 and a second pull rod 112, with the first pull rod 111 connected to the second pull rod 112. A ball socket 12 is located at the end of the second pull rod 112 away from the first pull rod 111, and a push block 13 is located on the second pull rod 112.

[0059] For example, such as Figure 3 As shown, the first pull rod 111 is located on the left side of the second pull rod 112, the ball socket 12 is connected to the right end of the second pull rod 112, and the push block 13 is located on the second pull rod 112.

[0060] Since the first tie rod 111 needs to be connected to the vehicle's steering gear, and the second tie rod 112 is connected to the steering knuckle 20 via the ball joint 2, the first tie rod 111 is closer to the inside of the vehicle than the second tie rod 112. The inside of the vehicle has many components. If the push block 13 is placed on the first tie rod 111, it is prone to interference with other components; furthermore, it is easily obstructed by other components, making its placement difficult. Placing the push block 13 on the second tie rod 112 effectively avoids these problems.

[0061] Optionally, the push block 13 is located at the end of the second pull rod 112 near the first pull rod 111.

[0062] Because the end of the second tie rod 112 furthest from the first tie rod 111 is connected to the steering knuckle 20 via the ball joint 2, the end of the second tie rod 112 furthest from the first tie rod 111 is closer to the wheel 40. Furthermore, the closer the push block 13 is to the end of the second tie rod 112 furthest from the first tie rod 111, the closer it is to the wheel 40. On the one hand, this makes it easy for the push block 13 to come into contact with the wheel 40, affecting the vehicle's steering. On the other hand, it makes it easy for the push block 13 to be blocked by the wheel 40. In the event of a minor eccentric collision, the push block 13 cannot come into contact with the object, and cannot reliably prevent the steering knuckle 20 and the wheel 40 connected to the steering knuckle 20 from falling into the passenger compartment.

[0063] Optionally, such as Figure 3 and Figure 4 As shown, the pusher block 13 has a first side surface 132, which is located on one side of the push surface 131 in the direction of extension of the center line of the ball socket 12. At least a portion of the first side surface 132 is inclined to form a first clearance surface 1321, which gradually slopes towards the preset surface 14 in the direction away from the ejection port 121.

[0064] The fact that at least a portion of the first side 132 is inclined can be understood as the first side 132 being only partially inclined, or the first side 132 being inclined as a whole.

[0065] For example, such as Figure 3 As shown, the first clearance surface 1321 gradually slopes backward in an upward direction.

[0066] Understandably, other components are arranged around the steering tie rod 1, and the push block 13 protrudes from the outer peripheral surface of the steering tie rod 1, making it easy for the first side 132 of the push block 13 to interfere with other components around the steering tie rod 1. For example, as Figure 4 As shown, the first side surface 132 of the push block 13 is prone to interference with the control arm 30. By tilting at least a portion of the first side surface 132 to form a first clearance surface 1321, and by gradually tilting the first clearance surface 1321 towards the preset surface 14 in a direction away from the disengagement outlet 121, interference between the first side surface 132 of the push block 13 and other components around the steering tie rod 1 can be effectively avoided, which is beneficial to improving the reliability of the vehicle with the steering tie rod 1.

[0067] Optionally, the pusher block 13 has a second side surface 133 and a third side surface 134 arranged opposite to each other along the length direction of the pull rod body 11, and a pushing surface 131 is disposed between the second side surface 133 and the third side surface 134. The second side surface 133 is disposed facing the ball socket 12. At least a portion of the second side surface 133 is inclined to form a second clearance surface 1331, and the second clearance surface 1331 is gradually inclined away from the ball socket 12 in a direction away from the preset surface 14.

[0068] The fact that at least a portion of the second side 133 is inclined can be understood as the second side 133 being only partially inclined, or the second side 133 being inclined as a whole.

[0069] For example, such as Figure 3 As shown, the ball socket 12 is located at the right end of the tie rod body 11, the second clearance surface 1331 is located to the right, and the second clearance surface 1331 gradually tilts to the left in the direction from back to front.

[0070] It is understandable that, such as Figure 5 As shown, a wheel 40 is located at the ball joint 12 of the steering tie rod 1, which makes it easy for the second side 133 of the push block 13 to interfere with the wheel 40. By tilting at least a portion of the second side 133 to form a second clearance surface 1331, and by gradually tilting the second clearance surface 1331 away from the ball joint 12 in a direction away from the preset surface 14, interference between the second side 133 of the push block 13 and the wheel 40 can be effectively avoided, which is beneficial to improving the reliability of vehicles with this steering tie rod 1.

[0071] Optionally, the dimension of the push block 13 in the length direction of the pull rod body 11 is 26mm to 31mm.

[0072] For example, such as Figure 3 As shown, the dimension of push block 13 in the left-right direction is L1, and L1 is 26mm to 31mm.

[0073] It is understandable that the larger the dimension of the push block 13 in the length direction of the tie rod body 11, the better the structural strength of the push block 13. However, the push block 13 is also more likely to interfere with the components around the steering tie rod 1, which is not conducive to the arrangement of the steering tie rod 1. The smaller the dimension of the push block 13 in the length direction of the tie rod body 11, the less likely the push block 13 is to interfere with the components around the steering tie rod 1, which is conducive to the arrangement of the steering tie rod 1. However, the structural strength of the push block 13 is also worse.

[0074] By setting the dimension of the push block 13 in the length direction of the tie rod body 11 to 26mm to 31mm, the overall structural strength of the push block 13 can be guaranteed, while effectively avoiding interference between the push block 13 and the surrounding components of the steering tie rod 1, which is beneficial to the arrangement of the steering tie rod 1.

[0075] In related technologies, the first and second tie rods are locked and unlocked via a lock nut. Specifically, a lock nut is fitted onto the first tie rod, and the lock nut is threadedly connected to the external thread of the first tie rod. When the end face of the lock nut abuts against the end face of the second tie rod, it prevents the first tie rod from rotating relative to the second tie rod, thus locking the two tie rods. When the end face of the lock nut leaves the end face of the second tie rod, the first tie rod can rotate relative to the second tie rod, thus unlocking the two tie rods. At this time, the lock nut can only be rotated around the circumference of the first tie rod to achieve locking and unlocking between the first and second tie rods. When toe-in adjustment is required, due to the presence of other components around the steering tie rod, only a small angle can be turned on the lock nut each time, and the lock nut needs to be turned multiple times, resulting in poor convenience for toe-in adjustment.

[0076] Optionally, the second pull rod 112 is sleeved on the first pull rod 111, and the first pull rod 111 is movably connected to the second pull rod 112 along its length. Figures 1 to 3 As shown, the push block 13 has a slit 136 extending along the length of the second pull rod 112, dividing the push block 13 into a first part 137 and a second part 138. The slit 136 penetrates the second pull rod 112 towards its inner side. The second pull rod 112 is tubular. The inner side of the second pull rod 112 can be understood as the direction of the second pull rod 112 towards its centerline; the outer side of the second pull rod 112 can be understood as the direction of the second pull rod 112 away from its centerline.

[0077] The steering linkage 1 includes a locking member 3. A first portion 137 and a second portion 138 are both connected to the locking member 3. At least one of the first portion 137 and the second portion 138 is movable relative to the locking member 3 along the width direction of the gap 136 to adjust the width of the gap 136. The fact that at least one of the first portion 137 and the second portion 138 is movable relative to the locking member 3 along the width direction of the gap 136 can be understood as: both the first portion 137 and the second portion 138 are movable relative to the locking member 3 along the width direction of the gap 136; or, only one of the first portion 137 and the second portion 138 is movable relative to the locking member 3 along the width direction of the gap 136.

[0078] By moving either the first part 137 or the second part 138 relative to the locking member 3 along the width direction of the gap 136, the width of the gap 136 can be adjusted. This allows adjustment of the clamping force of the first part 137 and the second part 138 of the push block 13 on the first pull rod 111, thereby achieving locking and unlocking between the second pull rod 112 and the first pull rod 111. Specifically, when it is necessary to adjust the toe-in, the gap 136 can be increased to reduce the clamping force of the first part 137 and the second part 138 on the first pull rod 111, thus unlocking between the second pull rod 112 and the first pull rod 111. At this time, the first pull rod 111 can move relative to the second pull rod 112 along its length direction. After the current tension adjustment is completed, by reducing the gap 136, the clamping force of the first part 137 and the second part 138 on the first pull rod 111 is larger. At this time, the first pull rod 111 cannot move relative to the second pull rod 112 along its length direction, thereby achieving locking between the second pull rod 112 and the first pull rod 111.

[0079] Therefore, when toe adjustment is required, it is only necessary to move the locking member 3 relative to the first part 137 and / or the second part 138 at the position of the locking member 3 on the steering tie rod 1, which helps to improve the convenience of toe adjustment.

[0080] Optionally, such as Figures 1 to 3 As shown, the end of the first pull rod 111 near the second pull rod 112 is provided with an external thread 1111, and the end of the second pull rod 112 near the first pull rod 111 is provided with an internal thread 1121. The external thread 1111 and the internal thread 1121 are threadedly connected, and at least a portion of the internal thread 1121 is provided on the push block 13.

[0081] The external thread 1111 and the internal thread 1121 are threaded together, so that by turning the first tie rod 111, the first tie rod 111 can rotate relative to the second tie rod 112, thereby allowing the first tie rod 111 to move relative to the second tie rod 112 along its length, thus achieving toe-in adjustment of the vehicle. By setting at least a portion of the internal thread 1121 on the push block 13, when the first part 137 and the second part 138 clamp the first tie rod 111, it is beneficial to increase the contact area between the first part 137 and the second part 138 and the first tie rod 111, increase the friction between the push block 13 and the first tie rod 111, improve the locking effect between the second tie rod 112 and the first tie rod 111, and thus improve the reliability of the steering tie rod 1.

[0082] Optionally, the width of the gap 136 is 2.5mm to 3.5mm.

[0083] For example, such as Figure 2 As shown, the width of the gap 136 is d, which is 2.5mm to 3.5mm.

[0084] Understandably, the smaller the width of the gap 136, the better the structural strength of the push block 13. However, the width adjustment range of the gap 136 is also smaller, resulting in a smaller adjustment range of the clamping force between the first part 137 and the second part 138, which is not conducive to toe adjustment. Conversely, the larger the width of the gap 136, the larger the width adjustment range of the gap 136, resulting in a larger adjustment range of the clamping force between the first part 137 and the second part 138, which is conducive to toe adjustment. However, the structural strength of the push block 13 is also worse.

[0085] By setting the width of the gap 136 to 2.5mm to 3.5mm, the overall structural strength of the push block 13 is ensured while the ease of toe adjustment is further improved.

[0086] Optionally, such as Figure 3 As shown, the gap 136 extends along the length of the second tie rod 112 to the second tie rod 112.

[0087] By extending the gap 136 to the second pull rod 112, when the first pull rod 111 and the second pull rod 112 are unlocked, the clamping force applied by the second pull rod 112 to the first pull rod 111 is smaller, which helps to reduce the friction between the second pull rod 112 and the first pull rod 111. This makes it easier to rotate the second pull rod 112 relative to the first pull rod 111 by turning the second pull rod 112, further improving the convenience of toe adjustment.

[0088] Optionally, the first part 137 is provided with a first threaded hole, and the second part 138 is provided with a second threaded hole, the second threaded hole being configured corresponding to the first threaded hole. The locking member 3 includes a screw, and both the first threaded hole and the second thread are threadedly connected to the screw.

[0089] By configuring the locking member 3 to include a screw, and using the screw to connect with the first part 137 and the second part 138 by thread, the locking and unlocking between the second pull rod 112 and the first pull rod 111 can be achieved by turning the locking member 3, thereby further improving the convenience of toe adjustment.

[0090] Optionally, the dimension of the push block 13 in the extension direction of the first threaded hole is 46mm to 51mm.

[0091] For example, such as Figure 2 As shown, the first part 137 is located below the second part 138, and the push block 13 has a vertical dimension of L2, which is 46mm to 51mm.

[0092] Understandably, the larger the dimension of the push block 13 in the extension direction of the first threaded hole, the larger the length of the first and second threaded holes can be set, resulting in better reliability of the connection between the locking member 3 and the first part 137 and the second part 138. However, the push block 13 is also more prone to interference with other components around it. For example, as Figure 4 As shown, push block 13 is prone to interference with rocker arm 30. The smaller the dimension of push block 13 in the extension direction of the first threaded hole, the less likely push block 13 is to interfere with other components around push block 13. However, the smaller the length of the first threaded hole and the second threaded hole, the worse the connection reliability between locking member 3 and the first part 137 and the second part 138.

[0093] By setting the dimension of the push block 13 in the extension direction of the first threaded hole to 46mm to 51mm, the reliability of the connection between the locking member 3 and the first part 137 and the second part 138 can be effectively guaranteed while avoiding interference between the push block 13 and other surrounding components.

[0094] Optionally, such as Figure 2 and Figure 3 As shown, the push surface 131 is located on the side of the first part 137 facing away from the second part 138. The first threaded hole is a blind hole, and the opening of the first threaded hole faces the second part 138. The second threaded hole is a through hole, and the screw is inserted into the second threaded hole through the opening of the second threaded hole away from the first part 137, and is threadedly connected to the first threaded hole.

[0095] By setting the first threaded hole as a blind hole and setting the push surface 131 on the side of the first part 137 facing away from the second part 138, with the opening of the first threaded hole facing the second part 138, the screw can be prevented from protruding beyond the push surface 131. This prevents the screw from contacting the collision object before the push surface 131 when the vehicle collides with the collision object, thus preventing the collision object from pushing the steering tie rod 1 and the ball joint 2 to separate in time, thereby reducing the safety of the vehicle with the steering tie rod 1.

[0096] Optionally, such as Figure 2 and Figure 3 As shown, the locking member 3 includes a screwing part 31 for cooperating with a tool, the screwing part 31 being located on the side of the second part 138 away from the first part 137.

[0097] For example, the screwing part 31 has an external hexagonal structure or an internal hexagonal structure, the tool is a tool gun, and the handle is engaged with the screwing part 31.

[0098] By providing a screw-on part 31, when toe adjustment is required, a tool can be used in conjunction with the screw-on part 31 to screw on the locking part 3, thereby further improving the convenience of toe adjustment.

[0099] Preferably, there are two screwing parts 31, one of which is an external hexagonal structure and the other is an internal hexagonal structure.

[0100] Optionally, the locking member 3 includes a stop portion 32, which is located on the side of the second portion 138 away from the first portion 137. The stop portion 32 has a first stop surface 321 facing the second portion 138. The second portion 138 has a second stop surface 1391 facing the stop portion 32, and the first stop surface 321 abuts against the second stop surface 1391 in the direction toward the first portion 137.

[0101] By using the first stop surface 321 to abut against the second stop surface 1391 in the direction toward the first part 137, it can effectively prevent the locking member 3 from becoming loose from the first pull rod 111 and the locking member 3 from becoming loose from the second pull rod 112, thereby improving the reliability of the connection between the locking member 3 and the first part 137 and the second part 138.

[0102] Optionally, such as Figure 3 As shown, the second part 138 has a boss 139 on the side away from the first part 137, and the surface of the boss 139 facing away from the first part 137 forms a second stop surface 1391.

[0103] It is understood that the extension directions of both the first and second threaded holes are perpendicular to the second stop surface 1391. Therefore, the orientation of the second stop surface 1391 determines the tightening position of the locking member 3. By setting the boss 139 and placing the second stop surface 1391 on the boss 139, the tightening position can be changed by altering the orientation of the second stop surface 1391 on the boss 139. This allows the tightening position of the locking member 3 to be conveniently positioned for assembly personnel, further improving the ease of toe-in adjustment.

[0104] It should be noted that the dimensions of the push block 13 in each direction must meet the requirements of the push block 13's structural strength, the connection reliability between the locking part 3 and the push block 13, and the rounded corner requirements of the push block 13.

[0105] like Figures 1 to 3 As shown, the steering tie rod assembly 10 of this embodiment includes a steering tie rod 1 and a ball joint 2. The steering tie rod is the steering tie rod 1 described in any of the above embodiments. The ball joint 2 includes a rod body 21 and a ball joint 22 connected to the rod body 21. The ball joint 22 is disposed at one end of the rod body 21 and is rotatably connected to the ball socket 12.

[0106] The steering tie rod assembly 10 of this invention can improve vehicle safety.

[0107] The vehicle of this embodiment includes a steering tie rod assembly 10, a steering gear, and a steering knuckle 20. The steering tie rod assembly 10 is the steering tie rod assembly 10 described in any of the above embodiments. The end of the steering tie rod 1 away from the ball joint 12 is rotatably connected to the steering gear, and the ball joint 2 is connected to the steering knuckle 20.

[0108] The vehicle described in this invention has advantages such as good safety.

[0109] like Figure 4 As shown, the vehicle includes a swing arm 30, and a second clearance surface 1331 is disposed facing the swing arm 30. The minimum distance between the second clearance surface 1331 and the swing arm 30 is t1, and t1 is greater than or equal to 10mm.

[0110] Understandably, during vehicle operation, the swing arm 30 will bounce, and when the swing arm 30 bounces, the distance between the swing arm 30 and the second abutment surface 1331 will change. The minimum distance between the second abutment surface 1331 and the swing arm 30 can be understood as the minimum distance between the swing arm 30 and the second abutment surface 1331 during the bouncing process. By making the second abutment surface 1331 an inclined plane, the swing arm 30 can be avoided. By setting the minimum distance between the second abutment surface 1331 and the swing arm 30 to be greater than or equal to 10mm, interference between the swing arm 30 and the push block 13 during bouncing can be effectively avoided.

[0111] like Figure 5 As shown, the vehicle includes a wheel 40, and a first clearance surface 1321 is disposed facing the wheel 40. The minimum distance between the first clearance surface 1321 and the wheel 40 is t2, and t2 is greater than or equal to 10mm.

[0112] During vehicle operation, the distance between wheel 40 and the first avoidance surface 1321 changes when wheel 40 turns. The minimum distance between the first avoidance surface 1321 and wheel 40 can be understood as the minimum distance between the first avoidance surface 1321 and wheel 40 during the turning process. By making the first avoidance surface 1321 an inclined plane, wheel 40 can be avoided. By setting the minimum distance between the first avoidance surface 1321 and wheel 40 to be greater than or equal to 10mm, interference between wheel 40 and push block 13 can be avoided when turning.

[0113] like Figure 6 and Figure 7 As shown, when the vehicle makes a minor oblique collision with a collision object (such as barrier 50) while moving forward, the collision object pushes the pusher block 13 to rotate downwards. Figure 7 The arrow r in the diagram indicates that the ball socket 12 of the steering tie rod 1 and the ball head 22 of the ball joint 2 are positioned sequentially. Figure 7In the states shown in Figures a, b, and c, the ball joint 12 of the steering tie rod 1 eventually disengages from the ball joint 22 of the ball joint 2, releasing the steering tie rod 1 from the ball joint 2. Subsequently, the steering knuckle 20 and wheel 40 rotate outwards from the vehicle body upon impact, releasing the vehicle's energy-absorbing space and preventing rigid structures such as the steering knuckle 20 and wheel 40 from intruding into the foot area of ​​the passenger compartment, effectively reducing the risk of occupant injury.

[0114] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A steering tie rod, characterized in that, include: Pull rod body; A ball socket and a push block are both connected to the pull rod body. The ball socket is located at one end of the pull rod body, and the push block protrudes from the outer peripheral surface of the pull rod body and has a pushing surface. Wherein, one end of the ball socket is open to form a release outlet through which the ball head passes, the push surface is arranged at an inclination relative to the preset surface, and the push surface gradually inclinations towards the preset surface along the direction of the release outlet, and the preset surface passes through the center line of the ball socket and the center line of the pull rod body; The pull rod body includes a first pull rod and a second pull rod, the first pull rod is connected to the second pull rod, the ball socket is located at the end of the second pull rod away from the first pull rod, and the push block is located on the second pull rod; The push block is located at the end of the second pull rod near the first pull rod.

2. The steering tie rod according to claim 1, characterized in that, The angle between the pushing surface and the preset surface is 40°~50°; and / or The push block is generally located on the same side of the preset surface thickness direction, and a part of the push block protrudes from the outer peripheral surface of the pull rod body along the direction of the release outlet.

3. The steering tie rod according to claim 1 or 2, characterized in that, The pusher has a first side surface, which is located on one side of the pushing surface along the extension direction of the centerline of the ball socket. At least a portion of the first side surface is inclined to form a first clearance surface, which gradually inclines towards the preset surface from the direction away from the ejection outlet; and / or The pusher has a second side and a third side arranged opposite to each other along the length of the pull rod body. The push surface is located between the second side and the third side. The second side faces the ball socket. At least a portion of the second side is inclined to form a second clearance surface. The second clearance surface gradually tilts away from the ball socket in a direction away from the preset surface.

4. The steering tie rod according to claim 1 or 2, characterized in that, The push block has a length of 26mm to 31mm along the length of the pull rod body.

5. The steering tie rod according to claim 1, characterized in that, The second tie rod is sleeved on the first tie rod, and the first tie rod is movably connected to the second tie rod along its length direction; The push block has a slit extending along the length of the second pull rod, the slit dividing the push block into a first part and a second part, the slit penetrating the second pull rod toward the inside of the second pull rod, the steering pull rod including a locking member, both the first part and the second part being connected to the locking member, and at least one of the first part and the second part being movable relative to the locking member along the width direction of the slit.

6. The steering tie rod according to claim 5, characterized in that, The first part is provided with a first threaded hole, and the second part is provided with a second threaded hole, the second threaded hole being provided corresponding to the first threaded hole; The locking component includes a screw, and both the first threaded hole and the second threaded hole are threadedly connected to the screw.

7. The steering tie rod according to claim 6, characterized in that, The pushing surface is located on the side of the first part facing away from the second part; the first threaded hole is a blind hole, and the opening of the first threaded hole faces the second part; and / or The locking element includes a screwing portion for engaging with a tool, the screwing portion being located on the side of the second portion away from the first portion.

8. The steering tie rod according to claim 6, characterized in that, The locking member includes a stop portion located on the side of the second portion away from the first portion, and the stop portion having a first stop surface facing the second portion; The second part has a boss on the side away from the first part, and the surface of the boss facing away from the first part forms a second stop surface, and the first stop surface abuts against the second stop surface in the direction toward the first part.

9. The steering tie rod according to any one of claims 5-8, characterized in that, The first pull rod has an external thread at its end near the second pull rod, and the second pull rod has an internal thread at its end near the first pull rod. The external thread and the internal thread are threadedly connected, and at least a portion of the internal thread is located on the push block.

10. The steering tie rod according to any one of claims 5-8, characterized in that, The width of the gap is 2.5mm to 3.5mm; and / or The gap extends along the length of the second tie rod to the second tie rod.

11. A steering tie rod assembly, characterized in that, include: Steering tie rod, wherein the steering tie rod is any one of claims 1-10; A ball-end club, comprising a shaft and a ball end connected to the shaft, the ball end being disposed at one end of the shaft and rotatably connected to the ball socket.

12. A vehicle, characterized in that, include: A steering tie rod assembly, wherein the steering tie rod assembly is the steering tie rod assembly as claimed in claim 11; The steering gear and steering knuckle are provided, with the end of the steering tie rod furthest from the ball joint rotatably connected to the steering gear, and the ball joint connected to the steering knuckle.

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