Swing arm assembly and vehicle

Abstract

The utility model discloses a swing arm assembly and a vehicle, the swing arm assembly comprises an upper swing arm, the inner end of the upper swing arm is provided with a first connecting part, the first connecting part is used for being connected with a front auxiliary frame, and the outer end of the upper swing arm is provided with a second connecting part; the upper end of the steering knuckle is movably connected with the second connecting part, the lower end of the steering knuckle is suitable for being connected with the lower swing arm, and the steering knuckle is further provided with a wheel connecting part used for being connected with a wheel; and at least part, close to the second connecting part, of the upper side of the steering knuckle is configured to be a fracture part, and the fracture part is suitable for being fractured during vehicle collision and enabling the steering knuckle to be separated relative to the upper swing arm. According to the swing arm assembly, after a vehicle is collided, the fracture part is automatically fractured, the steering knuckle can be separated from the upper swing arm, so that the steering knuckle and the wheel are thrown out towards the outer side, the situation that the wheel moves towards the rear side of the vehicle and threatens people in the vehicle can be prevented, the collision performance of the vehicle is improved, and hurt to passengers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle manufacturing, in particular to a swing arm assembly and a vehicle with the swing arm assembly. Background Art

[0002] The automotive industry is currently in an era of accelerated change, especially the rapid development of China's automotive industry, with increasingly fierce competition. In particular, people are paying more and more attention to safety needs, so automobile safety is not only the bottom line of automobile manufacturers, but also a respect for life.

[0003] Automobile passive safety includes head-on collisions, offset collisions and other situations, but most users encounter more small offset collisions. The existing connection between wheels and subframes is difficult to play a key role during the collision process, especially in small offset collisions. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a swing arm assembly in which, upon a vehicle collision, a breaking portion automatically breaks, allowing the steering knuckle to detach from the upper swing arm, allowing the steering knuckle and wheel to be flung outward. This prevents the wheel from moving toward the rear of the vehicle and posing a threat to occupants, thereby improving the vehicle's collision resistance and reducing injuries to occupants.

[0005] According to the embodiment of the utility model, the swing arm assembly includes: an upper swing arm, the inner end of the upper swing arm is provided with a first connecting portion, the first connecting portion is used to be connected to the front sub-frame, and the outer end of the upper swing arm is provided with a second connecting portion; a steering knuckle, the upper end of the steering knuckle is movably connected to the second connecting portion, the lower end of the steering knuckle is suitable for being connected to the lower swing arm, and the steering knuckle is also provided with a wheel connecting portion for being connected to the wheel; wherein, at least a portion of the upper side of the steering knuckle close to the second connecting portion is constructed as a breaking portion, and the breaking portion is suitable for breaking during a vehicle collision and causing the steering knuckle to detach relative to the upper swing arm.

[0006] According to the swing arm assembly of the embodiment of the present invention, by arranging that the upper side of the steering knuckle is at least partially constructed as a breaking portion, the breaking portion can automatically break after the vehicle is hit, and the steering knuckle can be separated from the upper swing arm, so that the steering knuckle and the wheel are thrown outward, which can prevent the wheel from moving toward the rear of the vehicle and posing a threat to the people in the vehicle, thereby improving the collision performance of the vehicle and reducing the injury to the occupants.

[0007] According to the swing arm assembly of some embodiments of the present invention, the fracture portion is provided with at least one weakening groove.

[0008] According to some embodiments of the swing arm assembly of the present invention, there are two weakened grooves, and the two weakened grooves are distributed on both sides of the fracture portion.

[0009] According to the swing arm assembly of some embodiments of the present invention, the two weakened grooves are spaced apart and distributed on both sides of the top of the fracture portion.

[0010] According to the swing arm assembly of some embodiments of the present invention, the weakened groove is configured as a strip-shaped groove extending along the length direction of the steering knuckle.

[0011] According to some embodiments of the swing arm assembly of the present invention, the fracture portion includes a first area and a second area, the first area and the second area are vertically connected, the widths of the cross sections of the first area and the second area are constructed to gradually decrease in a direction away from each other, and the weakened groove is provided in the first area.

[0012] According to the swing arm assembly of some embodiments of the present invention, the steering knuckle is provided with an inducing boss in a region close to the fracture portion, and the inducing boss is suitable for inducing the fracture portion to fracture.

[0013] According to the swing arm assembly of some embodiments of the present invention, the upper swing arm is movably connected to the steering knuckle via a swing arm ball pin structure.

[0014] According to some embodiments of the swing arm assembly of the present invention, the swing arm ball pin structure includes a ball socket portion and a ball head portion, wherein the ball head portion extends vertically into the ball socket portion and is movably connected to the ball socket portion;

[0015] Wherein, one of the ball socket and the ball head is provided on the steering knuckle, and the other is configured as the second connecting portion.

[0016] The utility model also provides a vehicle.

[0017] A vehicle according to an embodiment of the present utility model includes a swing arm assembly according to any one of the above embodiments.

[0018] The advantages of the vehicle and the above-mentioned swing arm assembly over the prior art are the same and will not be repeated here.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 1 is a schematic structural diagram of a swing arm assembly according to an embodiment of the present utility model;

[0022] Figure 2 1 is a schematic structural diagram of a steering knuckle according to an embodiment of the present utility model;

[0023] Figure 3 is a cross-sectional view of a broken portion of a steering knuckle according to an embodiment of the present utility model;

[0024] Figure 4 It is a cross-sectional view of the connection between the steering knuckle and the upper swing arm according to an embodiment of the present utility model.

[0025] Reference numerals:

[0026] Swing arm assembly 100,

[0027] Upper swing arm 1, first connecting part 11, second connecting part 12, steering knuckle 2, fracture part 21, weakened groove 211, first area 212, second area 213, induction boss 22, wheel connecting part 23, swing arm ball pin structure 3, ball socket part 31, ball head part 32, connecting nut 321, and limiting bolt 33. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] Unless otherwise specified, the front-to-back direction in this application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0032] Reference below Figures 1-4 The swing arm assembly 100 according to an embodiment of the present invention is described. By setting the upper side of the steering knuckle 2 to at least partially be constructed as a breaking portion 21, the breaking portion 21 can automatically break after the vehicle is hit by a collision, so that the steering knuckle 2 can be separated from the upper swing arm 1, so that the steering knuckle 2 and the wheel are thrown outward, which can prevent the wheel from moving toward the rear of the vehicle and posing a threat to the people in the vehicle, thereby improving the collision performance of the vehicle and reducing the injury to the occupants.

[0033] like Figures 1-4 As shown, a swing arm assembly 100 according to an embodiment of the present invention includes: an upper swing arm 1 and a steering knuckle 2.

[0034] Among them, the upper swing arm 1 is located on the outside of the front subframe, connected to the front subframe and the wheel respectively, responsible for supporting weight and steering; at the same time, the upper swing arm 1 and the lower swing arm are both connected to the steering knuckle 2, and the lower swing arm is used to support the body and the shock-absorbing structure, and to buffer vibrations during driving. The ingenious combination of the upper swing arm 1, the lower swing arm and the shock-absorbing structure forms a complete suspension system.

[0035] A first connecting portion 11 is provided at the inner end of the upper swing arm 1 , and the first connecting portion 11 is used to be connected to the front subframe, and a second connecting portion 12 is provided at the outer end of the upper swing arm 1 .

[0036] Specifically, the inner end of the upper swing arm 1 is connected to the front subframe. Connecting the inner end of the upper swing arm 1 to the front subframe via the first connecting portion 11 secures the inner end of the upper swing arm 1 to the front subframe, thereby enabling force transmission between the inner end of the upper swing arm 1 and the front subframe. In an actual design, two first connecting portions 11 can be configured, with the two first connecting portions 11 spaced apart in the front-to-back direction. The two first connecting portions 11 can be connected to the front subframe separately, allowing the upper swing arm 1 to be connected to the front subframe at two locations, thereby improving the connection strength between the inner structure of the upper swing arm 1 and the front subframe.

[0037] The outer end of the upper swing arm 1 is connected to the steering knuckle 2 via the second connecting portion 12 , thereby achieving a fixed connection between the outer end of the upper swing arm 1 and the steering knuckle 2 .

[0038] In actual design, the first connecting portion 11 can be detachably connected to the connecting position of the front sub-frame through connecting members such as bolts. The connection is reliable, the connection method is simple, and it is easy to assemble and disassemble.

[0039] The upper end of the steering knuckle 2 is movably connected to the second connecting portion 12 , the lower end of the steering knuckle 2 is suitable for being connected to the lower swing arm, and the steering knuckle 2 is further provided with a wheel connecting portion 23 for being connected to a wheel.

[0040] Specifically, if Figure 1 As shown, the outer end of the upper swing arm 1 is movably connected to the upper end of the steering knuckle 2 through the second connecting portion 12, so that relative movement between the upper swing arm 1 and the steering knuckle 2 can be realized, that is, force transmission between the two can be realized, and the lower end of the steering knuckle 2 is used to be connected to the lower swing arm, and the two can be movably connected, that is, force transmission between the steering knuckle 2 and the lower swing arm can be realized, and a wheel connecting portion 23 is provided in the lower area of ​​the steering knuckle 2, and the wheel connecting portion 23 can be connected to the steering knuckle 2 through a hub bearing, so as to realize the connection between the steering knuckle 2 and the wheel.

[0041] When the vehicle is running, the wheels will float up and down, which can make the steering knuckle 2 and the upper swing arm 1 move relative to each other, thereby reducing the impact between the two and improving riding comfort.

[0042] At least a portion of the upper side of the steering knuckle 2 close to the second connecting portion 12 is configured as a breaking portion 21 , which is adapted to break when the vehicle collides and to separate the steering knuckle 2 from the upper swing arm 1 .

[0043] Specifically, at least part of the upper side of the steering knuckle 2 is structured as a breaking portion 21. The breaking portion 21 can be arranged in the lower area close to the second connecting portion 12, and the strength of the breaking portion 21 can be set to be less than the strength of the first connecting portion 11, so that the breaking portion 21 is more likely to break than the first connecting portion 11. In this way, when the vehicle is hit, the steering knuckle 2 can break at the breaking portion 21, causing the steering knuckle 2 to detach from the upper swing arm 1, and the wheel and the steering knuckle 2 to be thrown out relative to the upper swing arm 1.

[0044] When the breaking portion 21 breaks, the steering knuckle 2 is directly separated from the upper swing arm 1, and the connection position between the steering knuckle 2 and the wheel will not be deformed, so the wheel can be thrown out smoothly. In addition, the breaking portion 21 is provided on the steering knuckle 2, so that the outer structure of the upper swing arm 1 can be intact, which can reduce excessive structural damage during a collision.

[0045] It should be noted that vehicle collisions include head-on collisions and offset collisions. A head-on collision can be a collision from the front of the vehicle's direction of travel, while an offset collision can be a collision from the left or right front of the vehicle's direction of travel. The fracture portion 21 on the outer side of the upper swing arm 1 in the present invention can fracture during either a head-on collision or an offset collision, effectively ejecting the steering knuckle 2 outward relative to the upper swing arm 1 and preventing the wheel connected to the steering knuckle 2 from intruding into the passenger compartment and posing a safety hazard to the occupants. In particular, the fracture portion 21 on the outer side of the upper swing arm 1 is more likely to fracture during an offset collision, thereby improving occupant safety during an offset collision.

[0046] Therefore, in the swing arm assembly 100 of the embodiment of the utility model, when the vehicle is hit by a collision, the connection between the upper swing arm 1 and the subframe can act as a fulcrum. When the breaking portion 21 breaks, the steering knuckle 2 separates from the upper swing arm 1 and is thrown outward, which can prevent the wheel from moving toward the rear of the vehicle and posing a threat to the occupants, thereby improving the collision performance of the vehicle and reducing injuries to the occupants.

[0047] In some embodiments, the fracture portion 21 is provided with at least one weakening groove 211 to weaken the structural strength of the fracture portion 21. For example, at least one pit is provided on the surface of the steering knuckle 2 to form the weakening groove 211, so that the steering knuckle 2 is weakened at the fracture portion 21. The number of weakening grooves 211 can be one, two, or three.

[0048] Therefore, after a vehicle collision, the steering knuckle 2 can be broken at the breaking portion 21 through the weakened groove 211, so that at least a portion of the steering knuckle 2 can expand along a pre-set, less harmful path in the weakened groove 211, thereby reducing the degree of damage to the steering knuckle 2. In this way, the damage mode of the steering knuckle 2 can be predicted and controlled, and the steering knuckle 2 and the wheel can be smoothly thrown out by failing in a safe manner.

[0049] In some embodiments, there are two weakening grooves 211, and the two weakening grooves 211 are distributed on both sides of the fracture portion 21. In this way, weakened areas can be formed on both sides of the fracture portion 21, so that the structural strength of the steering knuckle 2 in the weakening groove 211 is low, which is conducive to the steering knuckle 2 to break at the fracture portion 21.

[0050] Specifically, the steering knuckle 2 extends in the up-down direction, and the two weakening grooves 211 can be respectively arranged on the upper and lower sides of the broken part 21, and the two weakening grooves 211 can also be respectively arranged on the front and rear sides of the broken part 21. The above two settings can both achieve structural weakening of the broken part 21, and weakening grooves 211 can also be arranged on the four sides of the broken part 21. The setting methods are diverse and can be flexibly selected.

[0051] In this embodiment, if Figure 1 and Figure 2 As shown, the two weakening grooves 211 are respectively located on the front and rear sides of the fracture portion 21, and the two weakening grooves 211 can be symmetrically distributed on both sides of the fracture portion 21, and the two weakening grooves 211 are both recessed inward on the surface of the fracture portion 21, so that weakened areas can be formed on both the front and rear sides of the fracture portion 21 to improve the fracture failure ability of the steering knuckle 2 at the fracture portion 21, so that when the vehicle collides, it can automatically break in time to ensure that the steering knuckle 2 breaks smoothly with the upper swing arm 1, and the structural strength of the steering knuckle 2 can be ensured, and the structure is simple and easy to process.

[0052] In some embodiments, the two weakened grooves 211 are spaced apart on both sides of the top of the fracture portion 21. In this way, the two weakened grooves 211 can be broken at the top of the fracture portion 21, so that the steering knuckle 2 can be broken in the top area relative to the upper swing arm 1, which can achieve fracture within a safe range, reduce damage to the structure of the upper swing arm 1, and reduce the scope of fracture, so as to reduce damage to more structures and reduce maintenance costs.

[0053] Specifically, if Figure 2 As shown, the weakened groove 211 is located at the top of the fracture portion 21, and the two weakened grooves 211 are spaced apart and distributed, and the two weakened grooves 211 are respectively located on the front and rear sides of the fracture portion 21. In this way, the structures on both sides of the top of the fracture portion 21 can be weakened, which is beneficial for the weakened groove 211 to automatically break before other structures when the vehicle collides, so that the fracture can be carried out according to the preset position during the collision, and the fracture is timely and effective, thereby improving the collision performance of the vehicle.

[0054] In some embodiments, the weakened groove 211 is constructed as a strip-shaped groove extending along the length direction of the steering knuckle 2. In this way, the weakened groove 211 can be weakened to a certain extent in the length direction of the steering knuckle 2, and structural weakening can be achieved in a certain area, so that the fracture portion 21 can be easily broken at the weakened groove 211 during a collision.

[0055] The weakened groove 211 is configured as a strip-shaped groove. The strip-shaped groove can be configured as a square groove or an elliptical groove. Various configurations are available, allowing for flexible selection based on practical needs. In actual designs, the weakened groove 211 extends along the length of the knuckle 2 to a length less than the length of the fracture portion 21, or the weakened groove 211 extends along the length of the knuckle 2 to a length equal to the length of the fracture portion 21. This maximizes structural weakening at the fracture portion 21. Furthermore, the two weakened grooves 211 have identical structures, resulting in symmetrical structure and ease of processing.

[0056] In some embodiments, the fracture portion 21 includes a first region 212 and a second region 213, the first region 212 and the second region 213 are vertically connected, the widths of the cross sections of the first region 212 and the second region 213 are constructed to gradually decrease in a direction away from each other, and the weakening groove 211 is provided in the first region 212.

[0057] In this way, the structures of the first area 212 and the second area 213 can be weakened when they are away from each other, and the structural strength of the connection position of the first area 212 and the second area 213 will not be reduced. The connection strength of the breaking part 21 in normal use can be met, so that it can automatically break when it is subjected to a large collision energy during a collision.

[0058] Specifically, if Figure 3 As shown, the first region 212 and the second region 213 are arranged opposite each other, and the first region 212 is connected to the upper side of the second region 213, wherein the cross-sectional widths of the structure of the steering knuckle 2 in the lower area of ​​the fracture portion 21 are the same, and the cross-sectional widths of the first region 212 and the second region 213 are inconsistent. In the vertical direction, the widths of the cross-sections of the two gradually decrease in the direction away from each other, and the first region 212 and the second region 213 are symmetrically distributed along the front-to-back direction, that is, the fracture portion 21 can be constructed as a "J"-shaped structure, wherein the cross-sectional width change values ​​of the first region 212 and the second region 213 can be the same or different, and the vertical height of the cross-sectional area of ​​the first region 212 is greater than the vertical height of the cross-sectional area of ​​the second region 213. The two weakening grooves 211 are arranged on the front and rear sides of the first region 212, so that the area of ​​the weakening groove 211 is larger, which can make the structural strength of the first region 212 lower than the structural strength of the second region 213, which is conducive to the fracture of the fracture portion 21 in the weakening groove 211 during a collision.

[0059] Therefore, through the above arrangement, the structures of the first region 212 and the second region 213 can be smoothly connected, and the structural strength at the fracture portion 21 can be uniformly changed, thereby improving the structural stability of the steering knuckle 2.

[0060] In some embodiments, the steering knuckle 2 is provided with an inducing boss 22 in a region near the fracture portion 21 , and the inducing boss 22 is suitable for inducing the fracture portion 21 to fracture.

[0061] In this way, through the inducing effect of the inducing boss 22, the steering knuckle 2 can be precisely fractured at the fracture portion 21, which improves the timeliness and reliability of the fracture of the fracture portion 21, is conducive to the release of collision energy, and causes the steering knuckle 2 to separate from the upper swing arm 1.

[0062] Specifically, if Figure 2 and Figure 4As shown, the steering knuckle 2 is provided with an inducing boss 22 in the area where the fracture portion 21 is away from the second connecting portion 12, that is, the inducing boss 22 is located in the lower area of ​​the fracture portion 21, wherein the structural strength of the fracture portion 21 is relatively small, and the inducing boss 22 can enhance the structural strength of the lower area of ​​the fracture portion 21. In this way, when the vehicle is collided and the collision load is greater than the set load of the fracture portion 21, the fracture portion 21 may break first, and the structural strength at the inducing boss 22 is relatively large, which can reduce the fracture range of the fracture portion 21, and the induced fracture of the fracture portion 21 by the inducing boss 22 can be achieved, and the fracture position accuracy is high to protect the safety of other structures.

[0063] Among them, the induction boss 22 protrudes outward on the surface of the steering knuckle 2, which can improve the structural strength of the steering knuckle 2 at the induction boss 22, and the induction boss 22 can be constructed as a circular boss with a simple structure and easy processing. The circular boss can provide support for the clamping and positioning of the steering knuckle 2 during the machining process, which is beneficial to the processing of some connecting holes and installation positions of the steering knuckle 2.

[0064] In some embodiments, the upper swing arm 1 is movably connected to the steering knuckle 2 through the swing arm ball pin structure 3. Specifically, Figure 1 and Figure 4 As shown, the swing arm ball pin structure 3 is connected to the outer end of the upper swing arm 1, and the swing arm ball pin structure 3 is connected to the steering knuckle 2. The swing arm ball pin structure 3 can move relative to the steering knuckle 2, thereby realizing the movement between the upper swing arm 1 and the steering knuckle 2. This movement can include multi-directional movement. In this way, the provision of the swing arm ball pin structure 3 can withstand the force and torque from the wheel, thereby reducing the impact between the steering knuckle 2 and the upper swing arm 1, thereby improving ride comfort, and reducing the wear between the two, thereby increasing the service life of the entire structure.

[0065] In some embodiments, the swing arm ball pin structure 3 includes a ball socket 31 and a ball head 32. Figure 4 As shown, the ball head 32 extends vertically into the socket 31 and is movably connected to the socket 31. The socket 31 is provided with a receiving cavity for accommodating the ball head 32. The ball head 32 extends vertically into the socket 31, and the ball head 32 and the socket 31 move relative to each other. That is, during vehicle operation, the wheel may bounce up and down and steer. The relative movement between the ball head 32 and the socket 31 allows the suspension system to adapt to road irregularities and dynamic changes in the vehicle, such as acceleration, braking, and cornering, and absorb the resulting impact and vibration, thereby improving ride comfort and reducing damage to other vehicle components.

[0066] The connection between the ball socket 31 and the ball head 32 is a spherical fit, which can reduce friction and improve the smoothness of movement, so that the movement of the swing arm ball pin structure 3 is more stable.

[0067] Among them, one of the ball socket part 31 and the ball head part 32 is arranged on the steering knuckle 2, and the other is constructed as the second connecting part 12. That is to say, the ball socket part 31 can be arranged on the steering knuckle 2, and the second connecting part 12 can be set as the ball head part 32, or the ball head part 32 can be arranged on the steering knuckle 2, and the second connecting part 12 can be set as the ball socket part 31. Through the above two setting methods, the steering knuckle 2 and the upper swing arm 1 can be movable connected, and the setting methods are diverse and can be flexibly selected.

[0068] like Figure 4 When the cam 32 is in the unlock position, the cam 32 is in the unlock position, and the second end 32 of the cam 32 is locked.

[0069] The utility model also provides a vehicle.

[0070] According to the embodiment of the utility model, the vehicle includes the swing arm assembly 100 of any one of the above-mentioned embodiments. By setting the upper side of the steering knuckle 2 to at least partially constructed as a breaking portion 21, the breaking portion 21 can automatically break after the vehicle is hit, and the steering knuckle 2 can be separated from the upper swing arm 1, so that the steering knuckle 2 and the wheel are thrown outward, and the wheel is connected to the lower swing arm through the steering knuckle 2, and the lower swing arm is connected to the front subframe through a breakable connector, and the lower swing arm can also be separated from the front subframe. In this way, the wheel is thrown out toward the outside with the steering knuckle 2 and the lower swing arm, thereby preventing the wheel from directly hitting the lower end of the vehicle's A-pillar and causing deformation of the A-pillar and the front door, causing direct injury to the occupants due to the deformation of the aforementioned parts, and losing the golden rescue time due to the inability to open the door due to the deformation of the aforementioned parts, thereby improving the collision performance of the vehicle.

[0071] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does 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 any one or more embodiments or examples.

[0072] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A swing arm assembly, characterized in that: include: An upper swing arm, wherein an inner end of the upper swing arm is provided with a first connecting portion, the first connecting portion is used to be connected to the front subframe, and an outer end of the upper swing arm is provided with a second connecting portion; a steering knuckle, wherein the upper end of the steering knuckle is movably connected to the second connecting portion, the lower end of the steering knuckle is adapted to be connected to the lower swing arm, and the steering knuckle is further provided with a wheel connecting portion for connecting to a wheel; Wherein, at least a portion of the upper side of the steering knuckle close to the second connecting portion is configured as a breaking portion, and the breaking portion is adapted to break when the vehicle collides and to cause the steering knuckle to detach from the upper swing arm.

2. The swing arm assembly according to claim 1, characterized in that: The breaking portion is provided with at least one weakening groove.

3. The swing arm assembly according to claim 2, characterized in that: There are two weakening grooves, and the two weakening grooves are distributed on both sides of the fracture portion.

4. The swing arm assembly according to claim 3, characterized in that: The two weakened grooves are spaced apart and distributed on both sides of the top of the fracture portion.

5. The swing arm assembly according to claim 2, characterized in that: The weakened groove is configured as a strip-shaped groove extending along the length direction of the steering knuckle.

6. The swing arm assembly according to claim 2, characterized in that: The fracture portion includes a first region and a second region, the first region and the second region are vertically connected, the widths of the cross sections of the first region and the second region are configured to gradually decrease in a direction away from each other, and the weakening groove is provided in the first region.

7. The swing arm assembly according to claim 1, characterized in that: The steering knuckle is provided with an inducing boss in a region close to the fracture portion, and the inducing boss is suitable for inducing the fracture portion to fracture.

8. The swing arm assembly according to any one of claims 1 to 7, characterized in that: The upper swing arm is movably connected to the steering knuckle through a swing arm ball pin structure.

9. The swing arm assembly according to claim 8, characterized in that: The swing arm ball pin structure includes a ball socket and a ball head, wherein the ball head extends vertically into the ball socket and is movably connected to the ball socket; Wherein, one of the ball socket and the ball head is provided on the steering knuckle, and the other is configured as the second connecting portion.

10. A vehicle, characterized in that: The invention comprises a swing arm assembly according to any one of claims 1 to 9.

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