Knuckle and vehicle

Abstract

The present disclosure relates to the technical field of vehicles, and particularly relates to a knuckle and a vehicle, the knuckle comprising a main body part, a pull rod mounting part and a connecting arm, two ends of the connecting arm are connected with the main body part and the pull rod mounting part respectively, at least one side of the inner side and the outer side of the connecting arm is provided with a first weakening part, and the first weakening part is configured as a first concave part formed on the at least one side. In use, the main body part is connected with a wheel of the vehicle, the pull rod mounting part is connected with a steering pull rod, and by arranging the first weakening part on at least one side of the inner side and the outer side of the connecting arm, when a small offset collision of the vehicle occurs, the restriction of the steering pull rod on the movement track of the wheel through the knuckle is released, so that the wheel can move towards the outside of the rear side of the vehicle, the collision of the wheel with the A-pillar of the vehicle is avoided to cause the A-pillar to deform and intrude into the passenger compartment, the safety of the passengers of the vehicle is protected, and the active safety of the vehicle is improved.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and more specifically to a steering knuckle and a vehicle. Background Technology

[0002] The steering knuckle is a crucial vehicle component, connecting brake calipers, wheel bearings, suspension, and steering tie rods. It must not fail under normal driving conditions or misuse. Currently, steering knuckle design only considers overall vehicle durability and misuse conditions, neglecting the intrusion into the passenger compartment caused by the steering knuckle during a collision, which could compromise the vehicle's active safety. Utility Model Content

[0003] This disclosure proposes a steering knuckle to improve the active safety of a vehicle.

[0004] The steering knuckle disclosed herein includes a main body, a tie rod mounting portion, and a connecting arm. The two ends of the connecting arm are respectively connected to the main body and the tie rod mounting portion. At least one of the inner and outer sides of the connecting arm is provided with a first weakening portion, which is constructed as a first recess formed on the at least one side.

[0005] Optionally, the first weakening portion is disposed between the tie rod mounting portion and the main body portion, and the distance between the first weakening portion and the tie rod mounting portion is smaller than the distance between the first weakening portion and the main body portion.

[0006] Optionally, the pull rod mounting portion has a pull rod mounting hole, and the first weakening portion includes an inner weakening portion disposed on the inner side of the connecting arm, the inner weakening portion being located in front of and below the pull rod mounting hole.

[0007] Optionally, the inner side of the connecting arm is provided with a reinforcing rib, the reinforcing rib forming a groove, the extension direction of the inner weakened part intersects with the extension direction of the connecting arm, one end of the inner weakened part extends to the groove, and the other end of the inner weakened part extends to the edge of the connecting arm in a direction away from the groove.

[0008] Optionally, the inner weakened portion has a first side and a second side that intersect the extending direction of the connecting arm; the distance between the first side and the second side gradually increases in the direction away from the groove.

[0009] Optionally, the steering knuckle further includes a control arm mounting portion connected to the main body, the control arm mounting portion having a second weakening portion.

[0010] Optionally, in the extending direction of the connecting arm, the second weakening portion is provided on the side of the control arm mounting portion near the pull rod mounting portion.

[0011] Optionally, the second weakening portion is configured as a second recess formed on the control arm mounting portion, the control arm mounting portion having a control arm mounting hole, and the extending direction of the second weakening portion being parallel to the axial direction of the control arm mounting hole.

[0012] Optionally, the steering knuckle further includes a shock absorber mounting portion connected to the main body, and the shock absorber mounting portion is provided with a third weakening portion.

[0013] Optionally, the damper mounting portion is provided with a damper mounting hole, and the third weakening portion is located inside the damper mounting hole; the number of the third weakening portions is multiple, and in the extension direction of the connecting arm, the multiple third weakening portions are provided on opposite sides of the damper mounting portion.

[0014] Optionally, the third weakening portion is configured as a third recess formed on the damper mounting portion, the extension direction of the third weakening portion is parallel to the axial direction of the damper mounting hole, and the two ends of the third weakening portion extend to the two edges of the damper mounting portion respectively.

[0015] This disclosure also proposes a vehicle.

[0016] The vehicle disclosed herein includes a steering knuckle and a wheel, wherein the steering knuckle is any of the steering knuckles described above; the wheel is connected to the main body portion of the steering knuckle.

[0017] In use, the steering knuckle of this disclosure has a main body connected to the vehicle's wheels and a tie rod mounting part connected to the steering tie rod. By providing a first weakening part on at least one side of the inner and outer sides of the connecting arm, the first weakening part of the connecting arm can break under force when the vehicle experiences a small offset collision. On the one hand, the breakage absorbs a portion of the collision energy; on the other hand, the breakage separates the tie rod mounting part from the main body, releasing the steering tie rod from restricting the wheel's movement trajectory through the steering knuckle. This allows the wheel to move towards the rear outer side of the vehicle, preventing the A-pillar from deforming and intruding into the passenger compartment due to a collision between the wheel and the vehicle's A-pillar, thus protecting the safety of the vehicle's occupants and improving the vehicle's active safety. Attached Figure Description

[0018] Figure 1 This is a perspective view of a steering knuckle according to an embodiment of the present disclosure.

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 This is a schematic diagram of the connection between the steering knuckle and the steering tie rod according to an embodiment of the present disclosure.

[0021] Figure 4This is a partial enlarged view of the connection between the steering knuckle and the steering tie rod according to an embodiment of this disclosure.

[0022] Figure 5 This is a schematic diagram of the structure of a steering knuckle according to another embodiment of the present disclosure.

[0023] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0024] Figure 7 This is a first top view of a steering knuckle according to an embodiment of the present disclosure.

[0025] Figure 8 yes Figure 7 A magnified view of point C in the middle.

[0026] Figure 9 This is a perspective view of a steering knuckle according to an embodiment of the present disclosure.

[0027] Figure 10 This is a schematic diagram of the connection between the steering knuckle and the control arm according to an embodiment of the present disclosure.

[0028] Figure 11 This is a second top view of a steering knuckle according to an embodiment of the present disclosure.

[0029] Figure 12 yes Figure 11 Enlarged view of point D in the middle.

[0030] Figure 13 This is a side view of a steering knuckle according to an embodiment of the present disclosure.

[0031] Figure 14 yes Figure 13 Enlarged view of point E in the middle.

[0032] Figure label:

[0033] 10. Steering knuckle; 1. Main body; 11. Bearing mounting holes; 2. Tie rod mounting part; 21. Tie rod mounting hole; 3. Connecting arm; 31. Inner side; 311. Reinforcing rib; 312. Groove; 32. Outer side; 33. First weakened part; 331. Inner weakened part; 3311. First side; 3312. Second side; 332. Outer weakened part; 4. Control arm mounting part; 41. Control arm mounting hole; 42. Second weakened part; 5. Vibration damper mounting section; 51. Vibration damper mounting hole; 52. Third weakening section; 20. Steering tie rod; 30. Control arm; 301. Control arm ball joint; 302. Control arm large bushing; 303. Control arm small bushing. Detailed Implementation

[0034] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0035] like Figures 1 to 8 As shown, the steering knuckle 10 of this embodiment includes a main body 1, a tie rod mounting portion 2, and a connecting arm 3. Both ends of the connecting arm 3 are connected to the main body 1 and the tie rod mounting portion 2, respectively. At least one of the inner and outer sides of the connecting arm 3 is provided with a first weakening portion 33, which is constructed as a first recess formed on the at least one side.

[0036] In this context, "inner and outer directions" refers to the inward and outward directions of the vehicle. The inner side of the connecting arm 3 refers to the side of the connecting arm 3 facing inwards when the steering knuckle 10 is used in the vehicle; the outer side of the connecting arm 3 refers to the side of the connecting arm 3 facing outwards when the steering knuckle 10 is used in the vehicle. Inner and outer directions are as follows: Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown.

[0037] The first weakening portion 33 is constructed as a first recess formed on at least one side, which can be understood as: a recess is formed at a corresponding part on at least one side of the inner and outer sides of the connecting arm 3, and the recess constitutes the first recess.

[0038] The first recess weakens the strength of the first weakened portion 33, causing the connecting arm 3 to break at the first weakened portion 33 when subjected to a large force. Furthermore, the first recess reduces the amount of material in the connecting arm 3, thereby reducing the weight of the steering knuckle 10.

[0039] In use, the steering knuckle 10 of this embodiment connects the main body 1 to the vehicle's wheels and the tie rod mounting part 2 to the steering tie rod 20. By providing a first weakening part 33 on at least one side of the inner and outer sides of the connecting arm 3, the first weakening part 33 of the connecting arm 3 can break under force during a small offset collision. On the one hand, the breakage absorbs a portion of the collision energy; on the other hand, the breakage separates the tie rod mounting part 2 from the main body 1, releasing the restriction of the steering tie rod 20 on the wheel's trajectory through the steering knuckle 10. This allows the wheels to move towards the rear outer side of the vehicle, preventing the A-pillar from deforming and intruding into the passenger compartment due to a collision between the wheels and the A-pillar, thus protecting the safety of the vehicle's occupants and improving the vehicle's active safety. A small offset collision refers to a situation where the vehicle collides with an obstacle at a small offset angle (only 25% of the width of the front of the vehicle contacts the obstacle).

[0040] In addition, the steering knuckle 10, as the unsprung mass of the vehicle, is also a key component affecting the overall vehicle comfort. By reducing the weight of the steering knuckle 10, the unsprung mass of the vehicle can be reduced, thereby improving the vehicle's comfort.

[0041] Optionally, the first weakening part 33 is disposed between the tie rod mounting part 2 and the main body part 1, and the distance between the first weakening part 33 and the tie rod mounting part 2 is smaller than the distance between the first weakening part 33 and the main body part 1. In other words, for the main body part 1 and the tie rod mounting part 2, the first weakening part 33 is disposed closer to the tie rod mounting part 2.

[0042] The closer the connecting arm 3 is to the tie rod mounting portion 2, the weaker its strength is generally. By setting the distance between the first weakened portion 33 and the tie rod mounting portion 2 to be smaller than the distance between the first weakened portion 33 and the main body portion 1, the first weakened portion 33 is positioned in the weaker part of the connecting arm 3. As a result, in the event of a small offset collision, the first weakened portion 33 is more likely to break, causing the wheel to move towards the rear outer side of the vehicle, further improving the vehicle's active safety.

[0043] like Figure 7 and Figure 8 As shown, the plane passing through the axis m of the tie rod mounting hole 21 and perpendicular to the inward and outward directions of the vehicle is the first plane.

[0044] The inward / outward direction of the vehicle can be consistent with the left / right direction. For example, for the steering knuckle 10 located on the left side of the vehicle, the side facing left is the outer side of the vehicle, and the side facing right is the inner side of the vehicle; for the steering knuckle 10 located on the right side of the vehicle, the side facing right is the outer side of the vehicle, and the side facing left is the inner side of the vehicle. The inward / outward direction is as follows... Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown.

[0045] like Figure 3 and Figure 4 As shown, during the vehicle's stress process, the tie rod mounting part 2 is mainly subjected to thrust F1 and tension F2. When the vehicle experiences a small offset collision, the tie rod mounting part 2 is mainly subjected to tension. To ensure that the first weakened part 33 will not break during normal vehicle operation and misoperation, and to ensure that the first weakened part 33 will break during a small offset collision, it is necessary to ensure that the first weakened part 33 does not break when subjected to small tension and thrust, and breaks when subjected to large tension.

[0046] Optionally, the distance between the orthographic projection on the first plane and the axis of the tie rod mounting hole 21 is L1, where L1 is 10mm~15mm.

[0047] The inner weakening part 331 is positioned so that the first weakening part 33 will not break when subjected to small tensile and thrust forces, thus ensuring the normal operation of the vehicle; while it can break when the vehicle is involved in a small offset collision and is subjected to a large tensile force, thereby releasing the steering tie rod 20 from restricting the wheel movement trajectory through the steering knuckle 10 and ensuring the active safety of the vehicle.

[0048] The plane perpendicular to the axis m of the tie rod mounting hole 21 and passing through the axis of the steering tie rod 20 is the preset plane. For example... Figure 4 As shown, the line connecting the projection of the axis of the tie rod mounting hole 31 on the preset plane and the projection of the side of the first weakened part 33 facing the steering tie rod 20 on the preset plane is the connecting line k. The angle between the connecting line k and the axis of the steering tie rod 20 is a1, where a1 is 60°~80°.

[0049] The placement of the inner weakening part 331 can more effectively ensure the normal driving of the vehicle and the active safety when the vehicle is involved in a small offset collision.

[0050] Optionally, such as Figure 2 As shown, the pull rod mounting part 2 has a pull rod mounting hole 21, and the first weakening part 33 includes an inner weakening part 331 provided inside the connecting arm 3. The inner weakening part 331 is located in front of and below the pull rod mounting hole 21.

[0051] Here, "forward and backward" refers to the front-to-back direction of the vehicle. "Up and down" refers to the vertical direction of the vehicle. "The inner weakening part 331 is located in front of and below the tie rod mounting hole 21" means that when the steering knuckle 10 is used in a vehicle, the inner weakening part 331 is located in front of and below the tie rod mounting hole 21.

[0052] By positioning the inner weakening part 331 below and in front of the tie rod mounting hole 21, the structural strength of the lower front part of the tie rod mounting part 2 is relatively weak. In the event of a small offset collision, the inner weakening part 331 is prone to breakage, thereby releasing the restriction of the steering tie rod 20 on the wheel movement trajectory through the steering knuckle 10 and ensuring the active safety of the vehicle.

[0053] Optionally, such as Figure 1 and Figure 2 As shown, the inner side of the connecting arm 3 is provided with a reinforcing rib 311, which forms a groove 312. The extension direction of the inner weakening part 331 intersects with the extension direction of the connecting arm 3. One end of the inner weakening part 331 extends to the groove 312, and the other end of the inner weakening part 331 extends to the edge of the connecting arm 3 in a direction away from the groove 312.

[0054] For example, the inner weakening part 331 is provided on the lower side of the groove 312, the upper end of the inner weakening part 331 extends to the groove 312, and the lower end of the inner weakening part 331 extends to the lower edge of the connecting arm 3, so that the inner weakening part 331 and the groove 312 are connected.

[0055] By extending one end of the inner weakened portion 331 to the groove 312 and the other end of the inner weakened portion 331 to the edge of the connecting arm 3, it is not only convenient to process and manufacture the connecting arm 3, but also the strength of the inner weakened portion 331 can be improved by using the reinforcing rib 311. This ensures that the first weakened portion 33 is not allowed to break when subjected to small tensile and thrust forces, and breaks when subjected to large tensile forces, thereby further improving the active safety of the vehicle.

[0056] Optionally, the inner weakening portion 331 has a first side 3311 and a second side 3312 that intersect the extending direction of the connecting arm 3, and the distance between the first side 3311 and the second side 3312 gradually increases in the direction away from the groove 312.

[0057] For example, the width direction of the inner weakening part 331 can be consistent with the front-to-back direction. The tie rod mounting part 2 is located on the rear side of the main body part 1, and the first side 3311 is located on the rear side of the second side 3312. That is, the first side 3311 is the rear side of the inner weakening part 331, and the second side 3312 is the front side of the inner weakening part 331. The first side 3311 gradually tilts backward in the direction from top to bottom, and the second side 3312 gradually tilts forward in the direction from top to bottom, so that the distance between the first side 3311 and the second side 3312 gradually increases in the direction from top to bottom.

[0058] By designing the inner weakened portion 331 as described above, the structural strength of the inner weakened portion 331 away from the groove 312 is poor. When the first weakened portion 33 is subjected to a large tensile force, it is easy to break at this point. And along the extension direction of the inner weakened portion 331, the tie rod mounting portion 2 is gradually separated from the main body portion 1, thereby removing the restriction of the tie rod mounting portion 2 on the wheel movement trajectory and further improving the active safety of the vehicle.

[0059] Optionally, the angle between the orthographic projection of the first side 3311 on the first plane and the axis of the tie rod mounting hole 21 is a2, where a2 is 1°~3°.

[0060] By setting the angle between the orthographic projection of the first side 3311 on the first plane and the axis of the tie rod mounting hole 21 to 1°~3°, the first weakened part 33 will show signs of breakage when the vehicle is involved in a small offset collision. This facilitates the wheel to move along the set trajectory, more effectively avoids the wheel from colliding with the A-pillar of the vehicle, and further improves the active safety of the vehicle.

[0061] Optionally, the angle between the orthographic projection of the second side 3312 on the first plane and the axis of the tie rod mounting hole 21 is a3, where a3 is 6°~10°.

[0062] By setting the angle between the orthographic projection of the second side 3312 on the first plane and the axis of the tie rod mounting hole 21 to 6°~10°, the first weakened part 33 will show signs of breakage when the vehicle experiences a small offset collision. This facilitates the wheel's movement along the set trajectory, more effectively preventing the wheel from colliding with the vehicle's A-pillar and further improving the vehicle's active safety.

[0063] Optionally, the first weakened portion 33 extends axially along the tie rod mounting hole 21.

[0064] For example, such as Figure 1 and Figure 2 As shown, the first weakened part 33 extends in the vertical direction.

[0065] By setting the first weakened part 33 to extend axially along the tie rod mounting hole 21, the fracture mark of the first weakened part 33 extends axially along the tie rod mounting hole 21, and the tie rod mounting part 2 can be separated from the main body part 1 when the fracture mark is short.

[0066] Optionally, the length of the inner weakening portion 331 is 12mm to 18mm. In other words, the dimension of the inner weakening portion 331 along the axial direction of the tie rod mounting hole 21 is 12mm to 18mm.

[0067] The length of the inner weakening part 331 is set to 12mm~18mm, which makes it easy to ensure that the first weakening part 33 does not break when subjected to small tensile and thrust forces, and breaks when subjected to large tensile forces. This not only helps to ensure the normal driving of the vehicle, but also ensures the active safety of the vehicle.

[0068] Optionally, the width of the inner weakening portion 331 is 2mm to 5mm.

[0069] The width of the inner weakening part 331 is set to 2mm~5mm, which makes it easy to ensure that the first weakening part 33 does not break when subjected to small tensile and thrust forces, and breaks when subjected to large tensile forces. This not only helps to ensure the normal driving of the vehicle, but also ensures the active safety of the vehicle.

[0070] Optionally, the depth of the inner weakened portion 331 is 1mm to 2mm.

[0071] The depth of the inner weakening part 331 is set to 1mm~2mm, which makes it easy to ensure that the first weakening part 33 does not break when subjected to small tensile and thrust forces, and breaks when subjected to large tensile forces. This not only helps to ensure the normal driving of the vehicle, but also ensures the active safety of the vehicle.

[0072] In some embodiments, such as Figures 5 to 8 As shown, the first weakening part 33 includes an outer weakening part 332 disposed on the outside of the connecting arm 3. The distance between the orthographic projection of the outer weakening part 332 on the first plane and the axis of the tie rod mounting hole 21 is L2, and L2 is 35mm~50mm.

[0073] The outer weakening part 332 is positioned so that the first weakening part 33 will not break when subjected to small tensile and thrust forces, thus ensuring the normal operation of the vehicle; while it can break when the vehicle is involved in a small offset collision and is subjected to large tensile forces, thereby releasing the steering tie rod 20 from restricting the wheel movement trajectory through the steering knuckle 10 and ensuring the safety of the vehicle.

[0074] Optionally, the plane perpendicular to the inward and outward directions is designated as the second plane. For example... Figure 8 As shown, the distance between the orthographic projection of the outer weakening part 332 on the second plane and the orthographic projection of the axis of the tie rod mounting hole 21 on the second plane is L3, where L3 is 35mm~47mm.

[0075] The placement of the outer weakening part 332 can more effectively ensure the normal driving of the vehicle and the active safety when the vehicle is involved in a small offset collision.

[0076] Optionally, the outer weakening portion 332 is parallel to the axial direction of the tie rod mounting hole 21. The outer weakening portion 332 extends along the axial direction of the tie rod mounting hole 21 to both edges of the connecting arm 3.

[0077] For example, such as Figure 5 and Figure 6 As shown, the outer weakening portion 332 extends in the vertical direction, with the upper end of the outer weakening portion 332 extending to the upper edge of the connecting arm 3 and the lower end of the outer weakening portion 332 extending to the lower edge of the connecting arm 3.

[0078] By setting the outer weakening part 332 parallel to the axial direction of the tie rod mounting hole 21, and extending the outer weakening part 332 along the axial direction of the tie rod mounting hole 21 to both edges of the connecting arm 3, the fracture mark of the first weakening part 33 extends along the axial direction of the tie rod mounting hole 21. In the case of a short fracture mark, the tie rod mounting part 2 can be separated from the main body part 1.

[0079] In some embodiments, such as Figure 9 and Figure 10 As shown, the steering knuckle 10 also includes a control arm mounting part 4 connected to the main body part 1, and the control arm mounting part 4 is provided with a second weakening part 42.

[0080] In use, the steering knuckle 10 of this embodiment connects the control arm mounting portion 4 to the control arm 30. By providing a second weakening portion 42 in the control arm mounting portion 4, the second weakening portion 42 can break under force when the vehicle experiences a small offset collision. On the one hand, the breakage absorbs a portion of the collision energy; on the other hand, the breakage separates the control arm mounting portion 4 from the main body portion 1, thereby releasing the restriction of the wheel movement trajectory by the control arm 30 through the steering knuckle 10. This allows the wheel to move towards the rear outer side of the vehicle, preventing the A-pillar from deforming and intruding into the passenger compartment due to a collision between the wheel and the A-pillar, thus protecting the safety of the vehicle's occupants and improving the vehicle's active safety.

[0081] Optionally, in the extending direction of the connecting arm 3, the second weakening part 42 is provided on the side of the control arm mounting part 4 near the tie rod mounting part 2.

[0082] For example, such as Figure 9 As shown, the connecting arm 3 extends in the front-rear direction, the control arm mounting part 4 is provided on the front side of the connecting arm 3, and the second weakening part 42 is provided on the rear side of the control arm mounting part 4.

[0083] The placement of the second weakening part 42 makes it more likely to break in the event of a small offset collision, thereby further improving the vehicle's active safety.

[0084] like Figure 10As shown, during normal vehicle operation, the control arm ball joint 301 of the control arm 30 is mainly subjected to forces in the lateral direction of the vehicle. In a small offset collision, the force on the control arm mounting portion 4 is along the line p connecting the center points of the control arm ball joint 301 and the control arm bushing 302. To ensure that the second weakening portion 42 does not break during normal vehicle operation and in case of misoperation, and because the second weakening portion 42 may break during a small offset collision, it is necessary to ensure that the control arm mounting portion 4 does not break under small forces in the lateral direction of the vehicle, but breaks under large forces. Furthermore, the location where the control arm mounting portion 4 breaks is along the line p.

[0085] Optionally, the line connecting the center points of the large bushing 302 and the small bushing 303 of the control arm is q, and the angle between the line q and the line p is a4, where a4 is 30°~40°.

[0086] Optionally, the control arm mounting part 4 is provided with a control arm mounting hole 41, and the main body part 1 is provided with a bearing mounting hole 11. The plane passing through the axis of the bearing mounting hole 11 and parallel to the axis n of the control arm mounting hole 41 is the third plane. The distance between the second weakening part 42 and the third plane is L4, where L4 is 10mm to 20mm.

[0087] The second weakening part 42 is positioned so that when the vehicle experiences a small offset collision, the point where the control arm mounting part 4 breaks can be on the connecting line p. The trace of the breakage of the control arm mounting part 4 facilitates the movement of the wheel according to the set motion trajectory, more effectively avoiding the collision between the wheel and the vehicle's A-pillar, and further improving the vehicle's active safety.

[0088] Optionally, the second weakening portion 42 is configured as a second recess formed on the control arm mounting portion 4, and the second weakening portion 42 extends axially along the control arm mounting hole 41.

[0089] The second weakening part 42 is constructed as a second recess formed on the control arm mounting part 4. It can be understood that a corresponding part of the second weakening part 42 forms a recess, which constitutes the second recess.

[0090] The second recess can also reduce the amount of material in the steering knuckle 10, thereby reducing the weight of the steering knuckle 10, further reducing the unsprung mass of the vehicle, and improving the comfort of the vehicle.

[0091] Optionally, the second weakening portion 42 extends axially along the control arm mounting hole 41 to both edges of the control arm mounting portion 4.

[0092] For example, such as Figure 9 As shown, the axial direction of the control arm mounting hole 41 extends in the vertical direction, the upper end of the second weakening part 42 extends to the upper edge of the control arm mounting part 4, and the lower end of the second weakening part 42 extends to the lower edge of the control arm mounting part 4.

[0093] By extending the second weakened portion 42 along the axial direction of the control arm mounting hole 41 to both edges of the control arm mounting portion 4, the fracture mark of the second weakened portion 42 extends along the axial direction of the control arm mounting hole 41. With a short fracture mark, the control arm mounting portion 4 can be separated from the main body portion 1.

[0094] Optionally, the width of the second weakening part 42 is 14mm to 22mm.

[0095] By setting the width of the second weakening part 42 to 14mm~22mm, it is easy to ensure that the second weakening part 42 does not break when subjected to a small force, and breaks when subjected to a large force. This not only helps to ensure the normal operation of the vehicle, but also ensures the vehicle's active safety.

[0096] Optionally, the depth of the second weakening part 42 is 2mm to 3mm.

[0097] By setting the depth of the second weakened part 42 to 2mm~3mm, it is easy to ensure that the second weakened part 42 does not break when subjected to a small force, and breaks when subjected to a large force. This not only helps to ensure the normal operation of the vehicle, but also ensures the vehicle's active safety.

[0098] In some embodiments, such as Figures 11 to 14 As shown, the steering knuckle 10 also includes a shock absorber mounting part 5 connected to the main body part 1, and the shock absorber mounting part 5 is provided with a third weakening part 52.

[0099] In use, the steering knuckle 10 of this embodiment connects the shock absorber mounting portion 5 to the shock absorber. By providing a third weakening portion 52 in the shock absorber mounting portion 5, the third weakening portion 52 of the shock absorber mounting portion 5 can break under force when the vehicle experiences a small offset collision. On the one hand, the breakage absorbs a portion of the collision energy; on the other hand, the breakage separates the shock absorber mounting portion 5 from the main body portion 1, thereby releasing the restriction of the wheel's movement trajectory by the shock absorber through the steering knuckle 10. This allows the wheel to move towards the rear outer side of the vehicle, preventing the A-pillar from deforming and intruding into the passenger compartment due to a collision between the wheel and the vehicle's A-pillar, thus protecting the safety of the vehicle's occupants and improving the vehicle's active safety.

[0100] Optionally, the damper mounting portion 5 is provided with a damper mounting hole 51, and the third weakening portion 52 is located inside the damper mounting hole 51. There are multiple third weakening portions 52, and in the extending direction of the connecting arm 3, multiple third weakening portions 52 are provided on opposite sides of the damper mounting portion 5. For example, the plane passing through the axis g of the damper mounting hole 51 and perpendicular to the inward and outward directions is the fourth plane, and the third weakening part 52 is located inside the fourth plane. Figure 12As shown, there are two third weakening parts 52, which are located on the front and rear sides of the damper mounting part 5.

[0101] By providing the third weakening part 52 on the front and rear sides of the shock absorber mounting part 5, the shock absorber mounting part 5 can break on opposite sides when the vehicle is involved in a small offset collision, so as to more effectively release the restriction of the shock absorber on the wheel movement trajectory through the steering knuckle 10 and further improve the active safety of the vehicle.

[0102] Optionally, the distance between the third weakening part 52 and the fourth plane is L5, where L5 is 1.5mm to 2mm.

[0103] The placement of the third weakening part 52 makes it more likely to break in the event of a small offset collision, thereby further improving the vehicle's active safety.

[0104] Optionally, the third weakening portion 52 is configured as a third recess formed on the damper mounting portion 5, the extension direction of the third weakening portion 52 is parallel to the axial direction of the damper mounting hole 51, and the two ends of the third weakening portion 52 extend to the two edges of the damper mounting portion 5 respectively.

[0105] For example, such as Figure 13 and Figure 14 As shown, the third weakening part 52 extends in the vertical direction, with the upper end of the third weakening part 52 extending to the upper edge of the damper mounting part 5 and the lower end of the third weakening part 52 extending to the lower edge of the damper mounting part 5.

[0106] The third weakening part 52 is constructed as a third recess formed on the damper mounting part 5. It can be understood that a corresponding part of the third weakening part 52 forms a recess, which constitutes the third recess.

[0107] The third recess can also reduce the amount of material in the steering knuckle 10, thereby reducing the weight of the steering knuckle 10, further reducing the unsprung mass of the vehicle, and improving the comfort of the vehicle.

[0108] By extending both ends of the third weakening part 52 to the two edges of the damper mounting part 5 respectively, the fracture mark of the third weakening part 52 extends along the axial direction of the damper mounting hole 51, and the damper mounting part 5 is separated from the main body part 1 when the fracture mark is short.

[0109] To ensure that the third weakening part 52 will not break during normal vehicle operation and misoperation, but will break during a small offset collision, it is necessary to ensure that the shock absorber mounting part 5 does not break when subjected to small forces, and breaks when subjected to large forces.

[0110] Optionally, the width of the third weakening part 52 is L5, where L5 is 1.5mm to 3mm.

[0111] By setting the width of the third weakening part 52 to 1.5mm~3mm, it is easy to ensure that the third weakening part 52 does not break when subjected to small forces, and breaks when subjected to large forces. This not only helps to ensure the normal operation of the vehicle, but also ensures the vehicle's active safety.

[0112] Optionally, the depth of the third weakening part 52 is 1mm to 2mm.

[0113] By setting the depth of the third weakening part 52 to 1mm~2mm, it is easy to ensure that the third weakening part 52 does not break when subjected to a small force, and breaks when subjected to a large force. This not only helps to ensure the normal operation of the vehicle, but also ensures the vehicle's active safety.

[0114] When designing the steering knuckle 10, it is possible to provide only the first weakening part 33, or only the first weakening part 33 and the second weakening part 42, or only the first weakening part 33 and the third weakening part 52, or the first weakening part 33, the second weakening part 42 and the third weakening part 52. In the scheme that includes the first weakening part 33, the second weakening part 42 and the third weakening part 52, the strength of the first weakening part 33, the second weakening part 42 and the third weakening part 52 can be optimized so that when the vehicle is involved in a small offset collision, the first weakening part 33, the second weakening part 42 and the third weakening part 52 will break in sequence.

[0115] The vehicle in this embodiment includes a steering knuckle 10 and wheels. The steering knuckle 10 is the steering knuckle 10 described in any of the above embodiments, and the wheels are connected to the main body 1.

[0116] In the vehicle of this embodiment, during a high-speed, small-offset collision, the main body 1 of the steering knuckle 10 can disconnect from the tie rod mounting portion 2, the control arm mounting portion 4, and the shock absorber mounting portion 5. This absorbs the impact force and releases the steering knuckle 10, control arm 30, and shock absorber from restricting the wheels, altering the wheel's trajectory and preventing it from colliding with the lower end of the A-pillar, thus avoiding deformation of the A-pillar and intrusion into the passenger compartment, thereby protecting occupants. Furthermore, by providing the first weakening portion 33, the second weakening portion 42, and the third weakening portion 52, multiple weakening treatments are applied to the steering knuckle 10, achieving weight reduction and cost savings.

[0117] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0118] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0119] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0120] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0121] In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0122] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A steering knuckle, characterized in that, It includes a main body, a pull rod mounting part, and a connecting arm. The two ends of the connecting arm are respectively connected to the main body and the pull rod mounting part. At least one of the inner and outer sides of the connecting arm is provided with a first weakening part, which is constructed as a first recess formed on the at least one side.

2. The steering knuckle according to claim 1, characterized in that, The first weakening part is disposed between the tie rod mounting part and the main body part, and the distance between the first weakening part and the tie rod mounting part is smaller than the distance between the first weakening part and the main body part.

3. The steering knuckle according to claim 2, characterized in that, The pull rod mounting part has a pull rod mounting hole, and the first weakening part includes an inner weakening part disposed on the inner side of the connecting arm, the inner weakening part being located in front of and below the pull rod mounting hole.

4. The steering knuckle according to claim 3, characterized in that, The inner side of the connecting arm is provided with a reinforcing rib, which forms a groove. The extension direction of the inner weakened part intersects with the extension direction of the connecting arm. One end of the inner weakened part extends to the groove, and the other end of the inner weakened part extends to the edge of the connecting arm in a direction away from the groove.

5. The steering knuckle according to claim 4, characterized in that, The inner weakened portion has a first side and a second side that intersect the extending direction of the connecting arm; the distance between the first side and the second side gradually increases in the direction away from the groove.

6. The steering knuckle according to claim 1, characterized in that, The steering knuckle also includes a control arm mounting portion connected to the main body, and the control arm mounting portion is provided with a second weakening portion.

7. The steering knuckle according to claim 6, characterized in that, In the extending direction of the connecting arm, the second weakening portion is provided on the side of the control arm mounting portion near the pull rod mounting portion.

8. The steering knuckle according to claim 7, characterized in that, The second weakening portion is constructed as a second recess formed on the control arm mounting portion, the control arm mounting portion having a control arm mounting hole, and the extending direction of the second weakening portion being parallel to the axial direction of the control arm mounting hole.

9. The steering knuckle according to claim 1 or 6, characterized in that, The steering knuckle also includes a shock absorber mounting portion connected to the main body, and the shock absorber mounting portion is provided with a third weakening portion.

10. The steering knuckle according to claim 9, characterized in that, The damper mounting part is provided with a damper mounting hole, and the third weakening part is located inside the damper mounting hole; there are multiple third weakening parts, and in the extension direction of the connecting arm, multiple third weakening parts are provided on opposite sides of the damper mounting part.

11. The steering knuckle according to claim 10, characterized in that, The third weakening portion is constructed as a third recess formed on the damper mounting portion. The extension direction of the third weakening portion is parallel to the axial direction of the damper mounting hole, and the two ends of the third weakening portion extend to the two edges of the damper mounting portion, respectively.

12. A vehicle, characterized in that, include: Steering knuckle, wherein the steering knuckle is any one of claims 1-11; A wheel, which is connected to the main body of the steering knuckle.

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