Steering pull rod, steering pull rod assembly and vehicle

Abstract

The invention discloses a steering pull rod, a steering pull rod assembly and a vehicle, the steering pull rod comprises a pull rod body, a ball socket and a push block, the ball socket and the push block are both connected with the pull rod body, the ball socket is arranged at one end of the pull rod body, the push block protrudes out of the outer circumferential surface of the pull rod body, and the push block is arranged on the outer circumferential surface of the pull rod body. The push block is provided with a pushing surface; wherein an opening is formed in one end of the ball socket to form a disengaging opening for a ball head to penetrate through, the pushing face is obliquely arranged relative to a preset face, the pushing face gradually inclines in the direction close to the preset face in the direction of the disengaging opening, and the preset face passes through the center line of the ball socket and the center line of the pull rod body. According to the steering pull rod, the safety of the vehicle with the steering pull rod can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly relates to a steering tie rod, a steering tie rod assembly and a vehicle. Background Art

[0002] For the steering tie rod of a vehicle, to ensure the functional requirements, both the stiffness and strength of the steering tie rod are relatively large, and the connection strength between the steering tie rod and related components is also relatively large. When a vehicle has a small offset collision, it is very difficult for the steering tie rod to fail or become disengaged. As a result, the steering knuckle and the wheel connected to the steering tie rod are pulled by the steering tie rod and fall towards the passenger compartment of the vehicle. The steering knuckle and the wheel falling towards the passenger compartment of the vehicle not only easily cause a small offset collision with the occupants and harm the occupants, but also occupy the energy absorption space of the vehicle, resulting in the impact energy generated by the collision not being effectively released and harming the occupants. Therefore, it is urgent to design a steering tie rod that can be disengaged from the steering knuckle when the vehicle has a small offset collision without reducing the stiffness, so as to prevent the steering knuckle and the wheel from falling towards the passenger compartment of the vehicle and improve the safety of the vehicle. Summary of the Invention

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

[0004] To this end, the present invention provides a steering tie rod to improve the safety of a vehicle having 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 arranged at one end of the tie rod body. The push block protrudes from the outer peripheral surface of the tie rod body, and the push block has a pushing surface.

[0006] Wherein, one end of the ball socket is open to form a disengagement opening for a ball head to pass through. The pushing surface is inclined relative to a preset plane, and the pushing surface gradually inclines towards the direction close to the preset plane along the orientation of the disengagement opening. The preset plane passes through the center line of the ball socket and the center line of the tie rod body.

[0007] Optionally, the included angle between the pushing surface and the preset plane is 40° - 50°; and / or, the whole push block is arranged on the same side in the thickness direction of the preset plane, and a part of the push block protrudes from the outer peripheral surface of the tie rod body along the orientation of the disengagement opening.

[0008] Optionally, the tie rod body includes a first tie rod and a second tie rod. The first tie rod is connected to the second tie rod. The ball socket is arranged at one end of the second tie rod far from the first tie rod, and the push block is arranged on the second tie rod.

[0009] Optionally, the pushing block has a first side surface which is arranged on one side of the pushing surface in the extending direction of the central line of the ball socket. At least a part of the first side surface is inclined to form a first avoidance surface, and the first avoidance surface is inclined gradually towards the direction close to the preset surface along the direction away from the outlet; and / or, the pushing block has a second side surface and a third side surface which are arranged oppositely along the length direction of the pull rod body, the pushing surface is arranged between the second side surface and the third side surface, the second side surface faces the ball socket, and at least a part of the second side surface is inclined to form a second avoidance surface, and the second avoidance surface is inclined gradually towards the direction away from the ball socket along the direction away from the preset surface.

[0010] Optionally, the pushing block is arranged at the end of the second pull rod close to the first pull rod.

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

[0012] Optionally, the second pull rod is sleeved on the first pull rod, and the first pull rod is movably connected with the second pull rod along its length direction; the pushing block has a gap extending along the length direction of the second pull rod, and the gap divides the pushing block into a first part and a second part. The gap penetrates through the second pull rod towards the inner side of the second pull rod. The steering pull rod includes a locking member. Both the first part and the second part are connected with the locking member, and at least one of the first part and the second part is movable relative to the locking member along the width direction of the gap.

[0013] Optionally, the first part is provided with a first threaded hole, and the second part is provided with a second threaded hole which is arranged corresponding to the first threaded hole.

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

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

[0016] The locking member includes a screwing part for cooperating with a tool, and the screwing part is arranged on the side of the second part away from the first part.

[0017] Optionally, the locking member includes a stopping part which is arranged on the side of the second part away from the first part, and the stopping part has a first stopping surface facing the second part.

[0018] One side of the second part away from the first part is provided with a boss, a surface of the boss facing away from the first part forms a second abutting surface, and the first abutting surface abuts against the second abutting surface along the direction towards the first part.

[0019] Optionally, an end of the first pull rod close to the second pull rod is provided with an external thread, an end of the second pull rod close to the first pull rod is provided with an internal thread, the external thread is in threaded connection with the internal thread, and at least a part of the internal thread is arranged on the push block.

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

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

[0022] A steering pull rod, which is the steering pull rod described in any one of the above;

[0023] A ball head rod, which includes a rod body and a ball head connected to the rod body, the ball head is arranged at one end of the rod body, and the ball head is rotatably connected to the ball socket.

[0024] The vehicle of the present invention includes:

[0025] A steering pull rod assembly, which is the steering pull rod assembly (10) described in any one of the above;

[0026] A steering gear and a steering knuckle, one end of the pull rod away from the ball socket is rotatably connected to the steering gear, and the ball head rod is connected to the steering knuckle.

[0027] When the steering pull rod of the present invention is used in a vehicle, one end of the steering pull rod away from the ball socket is rotatably connected to the steering gear, the ball socket of the steering pull rod is rotatably connected to the ball head of the ball head rod, and the rod body of the ball head rod is connected to the steering knuckle. When the vehicle has a small-offset collision with a collision object in a direction perpendicular to the preset plane, the collision 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 inclined relative to the preset plane and gradually inclines towards the direction close to the preset plane along the orientation of the escape opening, the pushing force applied by the collision object to 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 pull rod to have a rotational tendency away from the rod body of the ball head rod, so that the ball head of the ball head rod can escape through the escape opening of the ball socket, that is, the ball head rod is pulled off from the steering pull rod, so that the steering knuckle is pulled off from the steering pull rod, avoiding the steering knuckle and the wheel connected to the steering knuckle from falling towards the passenger compartment, and improving the safety of the vehicle with this steering pull rod. Description of the Drawings

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

[0029] Figure 2 is Figure 1 a side view of the second tie rod in

[0030] Figure 3 is Figure 1 a partial structural schematic diagram at the push block in

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

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

[0033] Figure 6 is a partial structural schematic diagram when the vehicle according to an embodiment of the present invention collides with a wall barrier.

[0034] Figure 7 is Figure 6 a diagram showing the state change of the tie rod after the vehicle collides with the wall barrier in

[0035] Reference numerals:

[0036] 10, tie rod assembly;

[0037] 1, tie rod; 11, rod body; 111, first tie rod; 1111, external thread; 112, second tie rod; 1121, internal thread; 12, ball socket; 121, outlet; 13, push block; 131, pushing surface; 132, first side surface; 1321, first avoiding surface; 133, second side surface; 1331, second avoiding surface; 134, third side surface; 135, connecting surface; 136, gap; 137, first part; 138, second part; 139, boss; 1391, second abutting surface; 14, preset surface;

[0038] 2, ball head rod; 21, rod body; 22, ball head;

[0039] 3, locking member; 31, screwing part; 32, abutting part; 321, first abutting surface;

[0040] 20, steering knuckle;

[0041] 30, swing arm;

[0042] 40, wheel;

[0043] 50, wall barrier. Detailed implementation manners

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

[0045] As Figures 1 to 3 shown, the tie rod 1 of the embodiment of the present invention includes a tie rod body 11, a ball socket 12 and a push block 13 connected to the tie rod body 11. The ball socket 12 is provided at one end of the tie rod body 11. The push block 13 protrudes from the outer peripheral surface of the tie rod body 11, and the push block 13 has a pushing surface 131. One end of the ball socket 12 is open to form an escape opening 121 for the ball head 22 to pass through. The pushing surface 131 is inclined relative to the preset surface 14, and the pushing surface 131 is inclined gradually in the direction approaching the preset surface 14 along the orientation of the escape opening 121. For example, as Figure 1 shown, the included angle between the pushing surface 131 and the preset surface 14 is α. Among them, as Figure 1 shown, the preset surface 14 passes through the center line m of the ball socket 12 and the center line n of the tie rod body 11.

[0046] As Figure 6 and Figure 7 shown, when the tie rod 1 is used for a vehicle, the tie rod 1 is connected to the steering knuckle 20 through the ball head rod 2. Among them, the ball head rod 2 includes a rod body 21 and a ball head 22 connected to the rod body 21. The ball head 22 is provided at one end of the rod body 21, and the ball head 22 is rotatably connected to the ball socket 12. The ball socket 12 may have two openings, and the opening facing the ball head rod 2 forms the escape opening 121.

[0047] When the tie rod 1 of the embodiment of the present invention is used for a vehicle, one end of the tie rod 1 far from the ball socket 12 is rotatably connected to the steering gear. As Figure 6 and Figure 7 shown, the ball socket 12 of the tie rod 1 is rotatably connected to the ball head 22 of the ball head rod 2, and the rod body 21 of the ball head rod 2 is connected to the steering knuckle 20. When the vehicle has a small offset collision with a collision object in the direction perpendicular to the preset surface 14, the collision object (such as the wall barrier 50 in Figure 6 ) will contact the pushing surface 131 of the push block 13 and push the pushing surface 131 in the direction perpendicular to the preset surface 14. For example, along Figure 7Push the pushing surface 131 in the direction of arrow P. Since the pushing surface 131 is arranged obliquely relative to the preset surface 14 and gradually inclines towards the direction close to the preset surface 14 along the orientation of the escape opening 121, the pushing force applied by the collision object to the pushing surface 131 can be decomposed into a first component force perpendicular to the pushing 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 rotational movement tendency away from the rod body 21 of the ball head rod 2, so that the ball head 22 of the ball head rod 2 can escape through the escape opening 121 of the ball socket 12, that is, the ball head rod 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, avoiding 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 the present application easier to understand, the following takes the extension direction of the rod body 21 being consistent with the up and down direction, the extension direction of the steering tie rod 1 being consistent with the left and right direction, and the thickness direction of the preset surface 14 being consistent with the front and back direction as an example to further describe the technical solution of the present application.

[0049] For example, as Figure 2 , Figure 3 , Figure 6 and Figure 7 shown, the ball socket 12 is arranged at the right end of the tie rod body 11, the ball head 22 is arranged at the lower end of the rod body 21, and the upper end opening of the ball socket 12 forms an escape opening 121. The push block 13 protrudes forward from the outer peripheral surface of the tie rod body 11, the pushing surface 131 faces forward, and the pushing surface 131 gradually inclines backward along the direction from bottom to top. When the vehicle with the steering tie rod 1 has a small offset collision with a collision object forward, the pushing force applied by the collision object to the pushing surface 131 can be decomposed into a first component force perpendicular to the pushing 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 downward rotational movement tendency, so that the ball head 22 can escape through the escape opening 121 of the ball socket 12, that is, the ball head rod 2 can be disengaged from the steering tie rod 1.

[0050] Optionally, the included angle between the pushing surface 131 and the preset surface 14 is 40° - 50°.

[0051] Through the verification by testing with physical samples, when the included angle between the pushing surface 131 and the preset surface 14 is greater than 50°, the above-mentioned first component force is too small, resulting in the steering tie rod 1 being difficult to generate a rotational movement trend away from the rod body 21 under the action of the first component force, and ultimately leading to the difficulty in timely separation of the steering tie rod 1 and the ball head rod 2. When the included 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 extending direction of the rod body 21 is certain, the dimension of the push block 13 in the direction perpendicular to the preset surface 14 is too small, resulting in the collision object being unable to contact the pushing surface 131 of the push block 13 in time, and ultimately leading to the difficulty in timely separation of the steering tie rod 1 and the ball head rod 2. That is, when the included angle between the pushing surface 131 and the preset surface 14 is less than 40° or greater than 50°, it will both lead to the difficulty in timely separation of the steering tie rod 1 and the ball head rod 2.

[0052] For example, the ball head 22 is arranged at the lower end of the rod body 21, and the outlet 121 of the ball socket 12 faces downward. The push block 13 protrudes forward from the outer peripheral surface of the tie rod body 11, the pushing surface 131 faces forward, and the pushing surface 131 gradually inclines backward in the direction from bottom to top. When the included angle between the pushing surface 131 and the preset surface 14 is greater than 50°, that is, when the included angle between the pushing surface 131 and the up-down direction is greater than 50°, the above-mentioned first component force is too small, resulting in the steering tie rod 1 being difficult to generate a downward rotational movement trend under the action of the first component force. When the included 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 front-rear direction is certain, the dimension of the push block 13 in the front-rear direction is too small, resulting in the collision object being unable to contact the pushing surface 131 of the push block 13 in time.

[0053] By setting the included angle between the pushing surface 131 and the preset surface 14 to be 40° - 50°, while ensuring a relatively large first component force, it can make the collision object contact the pushing surface 131 in time, so that the steering tie rod 1 and the ball head rod 2 are separated in time, and then the steering knuckle 20 and the steering tie rod 1 are pulled off in time, more effectively avoiding the steering knuckle 20 and the wheel 40 connected to the steering knuckle 20 from falling backward into the passenger compartment, and further improving the safety of the vehicle with this steering tie rod 1.

[0054] Optionally, the whole push block 13 is arranged on the same side in the thickness direction of the preset surface 14. A part of the push block 13 protrudes from the outer peripheral surface of the tie rod body 11 along the orientation of the outlet 121.

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

[0056] It can be understood that the above-mentioned pushing surface 131 is entirely disposed on the same side in the thickness direction of the preset surface 14, and the part of the pushing block 13 that functions is mainly the pushing surface 131. By disposing the pushing block 13 entirely on the same side in the thickness direction of the preset surface 14, while ensuring the function of the pushing block 13, that is, ensuring that the pushing block 13 can be pushed by a collision object when the vehicle has a small offset collision, and causing the steering tie rod 1 and the ball head rod 2 to be disengaged, it is beneficial to reduce the overall volume of the pushing block 13, thereby facilitating the reduction of the weight and cost of the steering tie rod 1. A part of the pushing block 13 protrudes upward from the outer peripheral surface of the tie rod body 11, which can make the area of the pushing surface 131 larger, facilitating the collision object to contact the pushing surface 131 in time, so that the steering tie rod 1 and the ball head rod 2 are separated in time, further improving the safety of the vehicle with the steering tie rod 1.

[0057] Of course, in some other embodiments, a part of the pushing block 13 may be disposed on one side in the thickness direction of the preset surface 14, and another part may be disposed on the other side in the thickness direction of the preset surface 14.

[0058] In some embodiments, such as Figure 1 As shown, the tie rod body 11 includes a first tie rod 111 and a second tie rod 112, and the first tie rod 111 is connected to the second tie rod 112. The ball socket 12 is disposed at one end of the second tie rod 112 away from the first tie rod 111, and the pushing block 13 is disposed on the second tie rod 112.

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

[0060] Since the first tie rod 111 needs to be connected to the steering gear of the vehicle, and the second tie rod 112 is connected to the steering knuckle 20 through the ball head rod 2, the first tie rod 111 is relatively closer to the inner side of the vehicle than the second tie rod 112. There are more components on the inner side of the vehicle. If the pushing block 13 is disposed on the first tie rod 111, on the one hand, the pushing block 13 is likely to interfere with other components; on the other hand, the pushing block 13 is likely to be blocked by other components, resulting in difficult layout of the pushing block 13. However, disposing the pushing block 13 on the second tie rod 112 can effectively avoid the above problems.

[0061] Optionally, the pushing block 13 is disposed at the end of the second tie rod 112 close to the first tie rod 111.

[0062] Since the end of the second tie rod 112 remote from the first tie rod 111 is connected to the steering knuckle 20 by a ball head rod 2, the end of the second tie rod 112 remote from the first tie rod 111 is closer to the wheel 40, and the closer the push block 13 is to the end of the second tie rod 112 remote from the first tie rod 111, the closer it is to the wheel 40. On the one hand, this causes the push block 13 to easily interfere with the wheel 40, affecting the steering of the vehicle; on the other hand, it causes the push block 13 to be easily blocked by the wheel 40. During a small offset collision of the vehicle, the push block 13 cannot contact the collision object, and cannot reliably prevent the steering knuckle 20 and the wheel 40 connected to the steering knuckle 20 from falling towards the passenger compartment.

[0063] Optionally, as Figure 3 and Figure 4 shown, the push block 13 has a first side surface 132, and the first side surface 132 is arranged on one side of the top push surface 131 in the extending direction of the center line of the ball socket 12. At least a part of the first side surface 132 is inclined to form a first avoidance surface 1321, and the first avoidance surface 1321 is inclined gradually towards the direction close to the preset surface 14 along the direction away from the escape opening 121.

[0064] Wherein, at least a part of the first side surface 132 being inclined can be understood as that only a part of the first side surface 132 is inclined; or, the entire first side surface 132 is inclined.

[0065] For example, as Figure 3 shown, the first avoidance surface 1321 is inclined gradually backward along the direction from bottom to top.

[0066] It can be understood that there are other components arranged around the steering tie rod 1, and the push block 13 protrudes from the outer peripheral surface of the steering tie rod 1, resulting in the first side surface 132 of the push block 13 being prone to interference with other components around the steering tie rod 1. For example, as Figure 4 shown, the first side surface 132 of the push block 13 is prone to interference with the swing arm 30. By inclining at least a part of the first side surface 132 to form a first avoidance surface 1321, and the first avoidance surface 1321 being inclined gradually towards the direction close to the preset surface 14 along the direction away from the escape opening 121, it can effectively avoid the interference between the first side surface 132 of the push block 13 and other components around the steering tie rod 1, which is beneficial to improving the reliability of the vehicle with the steering tie rod 1.

[0067] Optionally, the push block 13 has a second side surface 133 and a third side surface 134 arranged oppositely along the length direction of the tie rod body 11, the top push surface 131 is arranged between the second side surface 133 and the third side surface 134, and the second side surface 133 faces the ball socket 12. At least a part of the second side surface 133 is inclined to form a second avoidance surface 1331, and the second avoidance surface 1331 is inclined gradually towards the direction away from the ball socket 12 along the direction away from the preset surface 14.

[0068] Wherein, at least a part of the second side surface 133 is inclined. It can be understood that only a part of the second side surface 133 is inclined; or, the whole second side surface 133 is inclined.

[0069] For example, as Figure 3 shown, the ball socket 12 is arranged at the right end of the pull rod body 11, the second avoidance surface 1331 faces right, and the second avoidance surface 1331 is gradually inclined leftward along the direction from the back to the front.

[0070] It can be understood that, as Figure 5 shown, a wheel 40 is arranged at the ball socket 12 of the steering tie rod 1, which causes the second side surface 133 of the push block 13 to be easily interfered with by the wheel 40. By inclining at least a part of the second side surface 133 to form the second avoidance surface 1331, and the second avoidance surface 1331 is gradually inclined away from the ball socket 12 along the direction away from the preset surface 14, it can effectively avoid the interference between the second side surface 133 of the push block 13 and the wheel 40, which is beneficial to improving the reliability of the vehicle with the steering tie rod 1.

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

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

[0073] It can be understood that the larger the dimension of the push block 13 in the length direction of the pull rod body 11, the better the structural strength of the push block 13, but the push block 13 is more likely to interfere with the components around the steering tie rod 1, which is not conducive to the layout of the steering tie rod 1; the smaller the dimension of the push block 13 in the length direction of the pull 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 layout of the steering tie rod 1, but the structural strength of the push block 13 is also poorer.

[0074] By setting the dimension of the push block 13 in the length direction of the pull rod body 11 to be 26 mm to 31 mm, while ensuring the overall structural strength of the push block 13, it can effectively avoid the interference between the push block 13 and the components around the steering tie rod 1, which is conducive to the layout of the steering tie rod 1.

[0075] In the related art, the locking and unlocking between the first pull rod and the second pull rod are achieved through a locknut. Specifically, a locknut is sleeved on the first pull rod, and the locknut is threadedly connected to the external thread of the first pull rod. When the end face of the locknut abuts against the end face of the second pull rod, the relative rotation of the first pull rod with respect to the second pull rod can be prevented, thereby achieving the locking between the first pull rod and the second pull rod. When the end face of the locknut leaves the end face of the second pull rod, the first pull rod can rotate relative to the second pull rod, thereby achieving the unlocking between the first pull rod and the second pull rod. At this time, only by rotating the locknut circumferentially around the first pull rod can the locking and unlocking between the first pull rod and the second pull rod be achieved. When toe-in adjustment is required, due to the presence of other components around the steering pull rod, each time the locknut can only be screwed by a small angle, and the locknut needs to be screwed multiple times, resulting in poor convenience of 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 direction. As Figures 1 to 3 shown, the push block 13 has a slit 136 extending along the length direction of the second pull rod 112. The slit 136 divides the push block 13 into a first part 137 and a second part 138, and the slit 136 penetrates the second pull rod 112 toward the inner side of the second pull rod 112. Among them, 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 toward its center line; the outer side of the second pull rod 112 can be understood as the direction of the second pull rod 112 away from its center line.

[0077] The steering pull rod 1 includes a locking member 3. Both the first part 137 and the second part 138 are connected to the locking member 3. At least one of the first part 137 and the second part 138 is movable relative to the locking member 3 in the width direction of the slit 136 to adjust the width of the slit 136. Among them, at least one of the first part 137 and the second part 138 being movable relative to the locking member 3 in the width direction of the slit 136 can be understood as: both the first part 137 and the second part 138 are movable relative to the locking member 3 in the width direction of the slit 136; or only one of the first part 137 and the second part 138 is movable relative to the locking member 3 in the width direction of the slit 136.

[0078] By moving either the first part 137 or the second part 138 of the push block 13 relative to the locking member 3 along the width direction of the gap 136, the width of the gap 136 can be adjusted, thereby adjusting the clamping force of the first part 137 and the second part 138 of the push block 13 on the first pull rod 111, and realizing the locking and unlocking between the second pull rod 112 and the first pull rod 111. Specifically, when toe adjustment is required, the gap 136 can be increased to make the clamping force of the first part 137 and the second part 138 on the first pull rod 111 smaller, realizing the 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 toe adjustment is completed, the gap 136 is reduced to make the clamping force of the first part 137 and the second part 138 on the first pull rod 111 larger. At this time, the first pull rod 111 cannot move relative to the second pull rod 112 along its length direction, realizing the 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 make the locking member 3 move relative to the first part 137 and / or the second part 138 at the position where the locking member 3 is provided on the steering tie rod 1, which is beneficial to improving the convenience of toe adjustment.

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

[0081] The external thread 1111 is threadedly connected to the internal thread 1121, so that by screwing the first pull rod 111 to make the first pull rod 111 rotate relative to the second pull rod 112, the first pull rod 111 can move relative to the second pull rod 112 along its length direction, realizing the toe adjustment of the vehicle. By providing at least a part of the internal thread 1121 on the push block 13, when the first part 137 and the second part 138 clamp the first pull rod 111, it is beneficial to increase the contact area between the first part 137 and the second part 138 and the first pull rod 111, increase the friction force between the push block 13 and the first pull rod 111, improve the locking effect between the second pull rod 112 and the first pull rod 111, and thus improve the reliability of the steering tie rod 1.

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

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

[0084] It can be understood that the smaller the width of the gap 136, the better the structural strength of the pushing block 13. However, the adjustment range of the width 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. The larger the width of the gap 136, the larger the adjustment range of the width 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 pushing block 13 is also worse.

[0085] By setting the width of the gap 136 to be 2.5 mm to 3.5 mm, while ensuring the overall structural strength of the pushing block 13, the convenience of toe adjustment is further improved.

[0086] Optionally, as Figure 3 shown, the gap 136 extends along the length direction of the second pull rod 112 to the second pull 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 exerted by the second pull rod 112 on the first pull rod 111 is smaller, which is beneficial to reducing the friction between the second pull rod 112 and the first pull rod 111, facilitating the rotation of the second pull rod 112 relative to the first pull rod 111 by screwing, and further improving the convenience of toe adjustment.

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

[0089] By setting the locking member 3 to include a screw rod and using the screw rod to be threadedly connected to the first part 137 and the second part 138, the locking and unlocking between the second pull rod 112 and the first pull rod 111 can be realized by screwing the locking member 3, further improving the convenience of toe adjustment.

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

[0091] For example, as Figure 2 shown, the first part 137 is arranged on the lower side of the second part 138, and the dimension of the pushing block 13 in the up and down direction is L2, and L2 is 46 mm to 51 mm.

[0092] It can be understood that the larger the dimension of the pushing block 13 in the extending direction of the first threaded hole, the larger the lengths of the first threaded hole and the second threaded hole can be set, so that the connection reliability between the locking member 3 and the first part 137 and the second part 138 is better. However, the pushing block 13 is more likely to interfere with other components around the pushing block 13. For example, as Figure 4 shown, the pushing block 13 is likely to interfere with the swing arm 30. The smaller the dimension of the pushing block 13 in the extending direction of the first threaded hole, the less likely the pushing block 13 is to interfere with other components around the pushing block 13. However, the smaller the lengths of the first threaded hole and the second threaded hole are set, the worse the connection reliability between the locking member 3 and the first part 137 and the second part 138 is.

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

[0094] Optionally, as Figure 2 and Figure 3 shown, the pushing surface 131 is provided 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 orifice of the first threaded hole faces the second part 138. Among them, the second threaded hole is a through hole, and the screw rod is inserted into the second threaded hole through the orifice 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 the pushing surface 131 is provided on the side of the first part 137 facing away from the second part 138, and the orifice of the first threaded hole faces the second part 138, it is possible to prevent the screw rod from protruding beyond the pushing surface 131, thereby preventing the screw rod from contacting the collision object before the pushing surface 131 when the vehicle collides with the collision object, resulting in the collision object being unable to push the steering tie rod 1 and the ball head rod 2 apart in time, reducing the safety of the vehicle having the steering tie rod 1.

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

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

[0098] By providing the screwing portion 31, when front-end alignment adjustment is required, the tool can be used to cooperate with the screwing portion 31, so as to screw the locking member 3 through the tool, further improving the convenience of front-end alignment adjustment.

[0099] Preferably, the number of the screwing parts 31 is two, one of the screwing parts 31 has an external hexagonal structure, and the other screwing part 31 has an internal hexagonal structure.

[0100] Optionally, the locking member 3 includes a stopping part 32. The stopping part 32 is arranged on the side of the second part 138 away from the first part 137. The stopping part 32 has a first stopping surface 321 facing the second part 138. The second part 138 has a second stopping surface 1391 arranged facing the stopping part 32. The first stopping surface 321 abuts against the second stopping surface 1391 along the direction towards the first part 137.

[0101] By using the first stopping surface 321 to abut against the second stopping surface 1391 along the direction towards the first part 137, it can effectively prevent loosening between the locking member 3 and the first pull rod 111 and between the locking member 3 and the second pull rod 112, and improve the connection reliability between the locking member 3 and the first part 137 and the second part 138.

[0102] Optionally, as Figure 3 shown, a boss 139 is arranged on the side of the second part 138 away from the first part 137. The surface of the boss 139 facing away from the first part 137 forms the second stopping surface 1391.

[0103] It can be understood that the extending directions of the first threaded hole and the second threaded hole are both perpendicular to the second stopping surface 1391. Thus, the orientation of the second stopping surface 1391 determines the screwing position of the locking member 3. By providing the boss 139 and arranging the second stopping surface 1391 on the boss 139, the screwing position can be changed by changing the orientation of the second stopping surface 1391 on the boss 139, so as to conveniently arrange the screwing position of the locking member 3 at a position convenient for the assembler to operate, which is beneficial to further improving the convenience of toe adjustment.

[0104] It should be noted that the dimensions of the push block 13 in all directions need to meet the requirements of the structural strength of the push block 13, the connection reliability between the locking member 3 and the push block 13, and the chamfering requirements of the push block 13.

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

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

[0107] The vehicle according to the embodiment of the present invention 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. One end of the steering tie rod 1, which is away from the ball socket 12, is rotatably connected to the steering gear, and the ball head rod 2 is connected to the steering knuckle 20

[0108] The vehicle according to the embodiment of the present invention has advantages such as good safety

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

[0110] It can be understood that during the driving of the vehicle, the swing arm 30 will bounce. When the swing arm 30 bounces, the distance between the swing arm 30 and the second avoidance surface 1331 will change. The minimum distance between the second avoidance surface 1331 and the swing arm 30 can be understood as: during the bouncing process of the swing arm 30, the minimum distance between the swing arm 30 and the second avoidance surface 1331. By setting the second avoidance surface 1331 as an inclined surface, the swing arm 30 can be avoided. By setting the minimum distance between the second avoidance surface 1331 and the swing arm 30 to be greater than or equal to 10 mm, it can effectively avoid interference between the swing arm 30 and the push block 13 when the swing arm 30 bounces

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

[0112] During the driving of the vehicle, when the wheel 40 steers, the distance between the wheel 40 and the first avoidance surface 1321 will change. The minimum distance between the first avoidance surface 1321 and the wheel 40 can be understood as: during the steering process of the wheel 40, the minimum distance between the first avoidance surface 1321 and the wheel 40. By setting the first avoidance surface 1321 as an inclined surface, the wheel 40 can be avoided. By setting the minimum distance between the first avoidance surface 1321 and the wheel 40 to be greater than or equal to 10 mm, it can avoid interference between the wheel 40 and the push block 13 when the wheel 40 steers

[0113] As Figure 6 and Figure 7 shown, when the vehicle has a small offset collision with a collision object (such as a wall barrier 50) in the forward direction, the collision object pushes the push block 13 to rotate downward ( Figure 7 the arrow r in), so that the ball socket 12 of the steering tie rod 1 and the ball head 22 of the ball head rod 2 are successively in Figure 7In the states of FIGS. a, b, and c in the middle, finally, the ball socket 12 of the steering tie rod 1 is disengaged from the ball head 22 of the ball head rod 2, so that the steering tie rod 1 and the ball head rod 2 are released. After that, the knuckle 20 and the wheel 40 rotate outwardly toward the vehicle body under the impact of the collision object, releasing the energy absorption space of the vehicle and preventing rigid structures such as the knuckle 20 and the wheel 40 from invading the foot area of the occupant compartment, effectively reducing the risk of occupant injury.

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

Claims

1. A steering tie rod, characterized in that, it includes: a tie rod body; a ball socket and a push block, both the ball socket and the push block are connected to the tie rod body, the ball socket is arranged at one end of the tie rod body, the push block protrudes from the outer peripheral surface of the tie rod body, and the push block has a pushing surface; wherein, one end of the ball socket is open to form an escape opening for a ball head to pass through, the pushing surface is arranged obliquely relative to a preset plane, and the pushing surface gradually inclines towards the direction close to the preset plane along the orientation of the escape opening, and the preset plane passes through the center line of the ball socket and the center line of the tie rod body.

2. The steering tie rod according to claim 1, characterized in that, the included angle between the pushing surface and the preset plane is 40° - 50°; and / or the whole push block is arranged on the same side in the thickness direction of the preset plane, and a part of the push block protrudes from the outer peripheral surface of the tie rod body along the orientation of the escape opening.

3. The steering tie rod according to claim 1 or 2, characterized in that, the tie rod body includes a first tie rod and a second tie rod, the first tie rod is connected to the second tie rod, the ball socket is arranged at one end of the second tie rod far from the first tie rod, and the push block is arranged on the second tie rod.

4. The steering tie rod according to claim 3, characterized in that, the push block has a first side surface, the first side surface is arranged on one side of the pushing surface in the extending direction of the center line of the ball socket, at least a part of the first side surface is obliquely arranged to form a first avoiding surface, and the first avoiding surface gradually inclines towards the direction close to the preset plane along the direction away from the escape opening; and / or the push block has a second side surface and a third side surface arranged oppositely along the length direction of the tie rod body, the pushing surface is arranged between the second side surface and the third side surface, the second side surface faces the ball socket, at least a part of the second side surface is obliquely arranged to form a second avoiding surface, and the second avoiding surface gradually inclines towards the direction away from the ball socket along the direction away from the preset plane.

5. The steering tie rod according to claim 3, characterized in that, the push block is arranged at the end of the second tie rod close to the first tie rod.

6. The steering tie rod according to claim 5, characterized in that, the dimension of the push block in the length direction of the tie rod body is 26mm - 31mm.

7. The steering tie rod according to claim 5, 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 gap extending along the length direction of the second tie rod, the gap divides the push block into a first part and a second part, the gap penetrates the second tie rod towards the inner side of the second tie rod, the steering tie rod includes a locking member, both the first part and the second part are connected to the locking member, and at least one of the first part and the second part is movable relative to the locking member along the width direction of the gap.

8. The steering tie rod according to claim 7, characterized in that, The first part is provided with a first threaded hole, the second part is provided with a second threaded hole, and the second threaded hole is arranged corresponding to the first threaded hole; The locking member includes a screw rod, and both the first threaded hole and the second threaded hole are threadedly connected to the screw rod.

9. The tie rod according to claim 8, wherein, The pushing surface is arranged on a side of the first part facing away from the second part, the first threaded hole is a blind hole, and the orifice of the first threaded hole faces the second part; and / or The locking member includes a screwing part for cooperating with a tool, and the screwing part is arranged on a side of the second part away from the first part.

10. The tie rod according to claim 8, wherein, The locking member includes a stopping part, the stopping part is arranged on a side of the second part away from the first part, and the stopping part has a first stopping surface facing the second part; A boss is arranged on a side of the second part away from the first part, and a surface of the boss facing away from the first part forms a second stopping surface, and the first stopping surface stops against the second stopping surface along a direction facing the first part.

11. The tie rod according to any one of claims 7-10, wherein, An external thread is arranged at an end of the first tie rod close to the second tie rod, an internal thread is arranged at an end of the second tie rod close to the first tie rod, the external thread is threadedly connected to the internal thread, and at least a part of the internal thread is arranged on the pushing block.

12. The tie rod according to any one of claims 7-10, wherein, The width of the gap is 2.5 mm to 3.5 mm; and / or The gap extends along the length direction of the second tie rod to the second tie rod.

13. A tie rod assembly, wherein, comprising: A tie rod, the tie rod being the tie rod according to any one of claims 1-14; A ball head rod, the ball head rod includes a rod body and a ball head connected to the rod body, the ball head is arranged at one end of the rod body, and the ball head is rotatably connected to the ball socket.

14. A vehicle, wherein, comprising: A tie rod assembly, the tie rod assembly being the tie rod assembly according to claim 13; A steering gear and a steering knuckle, one end of the tie rod away from the ball socket is rotatably connected to the steering gear, and the ball head rod is connected to the steering knuckle.

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