Front suspension assembly, rear suspension assembly and suspension system

Abstract

The invention discloses a front suspension assembly, a rear suspension assembly and a suspension system.The front suspension assembly comprises a front auxiliary frame, two front upper swing arms and two front lower swing arms, the two front upper swing arms are arranged on the two sides of the front auxiliary frame in the width direction respectively, and the two front lower swing arms are arranged on the two sides of the front auxiliary frame in the width direction respectively; the two front lower swing arms are arranged on the two sides of the front auxiliary frame in the width direction respectively, and the front upper swing arms are arranged on the upper sides of the front lower swing arms. Wherein the front auxiliary frame is subjected to topological optimization to form a plurality of first hollowed-out parts, and the front upper swing arm and the front lower swing arm are subjected to topological optimization to form a plurality of second hollowed-out parts on arm bodies. According to the load and strength durability requirements of the whole vehicle, the front suspension assembly is structurally optimized through a topological method, the requirement for light weight of the front suspension assembly is met, the safety performance and the service life of a suspension system are met, and meanwhile the higher control performance of the vehicle can be met.

Description

Technical Field

[0001] This invention relates to the field of suspension system technology, and in particular to a front suspension assembly, a rear suspension assembly, and a suspension system. Background Technology

[0002] The suspension system is the force transmission device that connects the wheels to the chassis (or body). Its core functions are to bear the weight of the vehicle body, absorb shocks and vibrations from uneven road surfaces to ensure ride comfort, and transmit the driving force, braking force, and lateral force on the wheels to the chassis to ensure the vehicle's handling stability.

[0003] In related technologies, automotive suspension systems are generally made of welded steel plates or die-cast aluminum alloys. Welded steel plate suspension systems have high strength, but they have many parts and complex welding processes. They require the development of special stamping dies, special welding tooling, and special welding equipment, resulting in high equipment investment. In addition, the products themselves are heavy, making it impossible to achieve lightweight design of the suspension system. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a front suspension assembly that optimizes the structure of the front suspension assembly through a topology method, achieving the requirement of lightweight front suspension assembly. While meeting the safety performance and service life of the suspension system, it can also meet the vehicle's higher handling performance.

[0005] The present invention further proposes a front suspension assembly.

[0006] The present invention also proposes a suspension system.

[0007] According to a first aspect of the present invention, a front suspension assembly includes: a front subframe, two front upper control arms and two front lower control arms, wherein the two front upper control arms are respectively disposed on both sides of the front subframe in the width direction, and the two front lower control arms are respectively disposed on both sides of the front subframe in the width direction, and the front upper control arms are disposed on the upper side of the front lower control arms; wherein the front subframe is topologically optimized to form a plurality of first hollows, and the front upper control arms and the front lower control arms are topologically optimized to form a plurality of second hollows on the arm body.

[0008] According to the embodiments of the present invention, the front suspension assembly is structurally optimized by a topology method based on the vehicle load and strength and durability requirements, thereby achieving the requirement of lightweighting of the front suspension assembly. While meeting the safety performance and service life of the suspension system, it can also meet the vehicle's higher handling performance.

[0009] According to some embodiments of the present invention, the front subframe is provided with a plurality of front fixing points, and the front subframe is provided with two first crossbeams spaced apart in the front-rear direction; wherein, the front subframe is topologically optimized to form a plurality of first hollows on the periphery of at least one of the front fixing points and / or on at least one of the first crossbeams.

[0010] According to some embodiments of the present invention, the front upper swing arm is provided with two first arm bodies, one end of the two first arm bodies is provided with a front upper swing arm outer point, and the other end of the two first arm bodies is respectively provided with two front upper swing arm mounting points. The two front upper swing arm mounting points are connected to the front subframe, and a plurality of second hollows are formed on the first arm bodies.

[0011] According to some embodiments of the present invention, the front lower control arm includes: a second arm body, the end of the second arm body is provided with two front lower control arm mounting points and a front lower control arm outer point, and the second arm body is provided with a first damper mounting point for fixing a damper and a second height sensor mounting point for fixing a height sensor, and the periphery of the first damper mounting point, the first height sensor mounting point and one of the front lower control arm mounting points is provided with the second hollow.

[0012] According to a second aspect of the present invention, a rear suspension assembly includes: a rear subframe, a rear traction control arm, a rear guide control arm, a rear lower control arm, a control control arm, and a rear upper control arm, wherein the rear traction control arm, the rear guide control arm, the rear lower control arm, the rear control control arm, and the rear upper control arm are all connected to the rear subframe; wherein the rear subframe is topologically optimized to form a plurality of third hollows, and the rear traction control arm, the rear guide control arm, the rear lower control arm, and the rear upper control arm are topologically optimized to form a plurality of fourth hollows on the arm body.

[0013] According to some embodiments of the present invention, the rear subframe is provided with a plurality of rear fixing points, and the rear subframe is provided with two second crossbeams spaced apart in the front-rear direction; wherein, the rear subframe is topologically optimized to form a plurality of third hollows on the periphery of at least one of the rear fixing points and / or on at least one of the second crossbeams.

[0014] According to some embodiments of the present invention, the rear traction control arm includes: a third arm body, one end of which is provided with a rear traction control arm mounting point, the rear traction control arm mounting point being connected to the rear subframe, and a plurality of the fourth hollows being formed on the third arm body; and the rear guide control arm includes: a fourth arm body, one end of which is provided with a rear guide control arm mounting point, the rear guide control arm mounting point being connected to the rear subframe, and a plurality of the fourth hollows being formed on the fourth arm body.

[0015] According to some embodiments of the present invention, the rear control swing arm includes: a fifth arm body, one end of which is provided with a rear control swing arm mounting point and the other end of which is provided with a first steering knuckle mounting point, the rear control swing arm mounting point being connected to the rear subframe, the first steering knuckle mounting point being connected to a steering knuckle, and a plurality of the fourth hollows being formed on the fifth arm body; the rear upper swing arm includes: a sixth arm body, one end of which is provided with a rear upper swing arm mounting point and the other end of which is provided with a second steering knuckle mounting point, the rear upper swing arm mounting point being connected to the rear subframe, the second steering knuckle mounting point being connected to a steering knuckle, and a plurality of the fourth hollows being formed on the sixth arm body.

[0016] According to some embodiments of the present invention, the rear lower control arm includes: a seventh arm body, one end of the seventh arm body is provided with a rear lower control arm mounting point and the seventh arm body is provided with a second shock absorber mounting point for fixing the shock absorber, the rear lower control arm mounting point is connected to the rear subframe, a plurality of the fourth hollows are formed on the seventh arm body, and the interior of the seventh arm body is at least partially hollow.

[0017] A suspension system according to a third aspect of the present invention includes: the front suspension assembly and / or the rear suspension assembly.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the front suspension assembly according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the front suspension assembly according to an embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the front subframe according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the front upper swing arm according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the front lower control arm according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the rear suspension assembly according to an embodiment of the present invention; Figure 7 This is a structural schematic diagram of the rear subframe according to an embodiment of the present invention; Figure 8This is a schematic diagram of the structure of the rear traction swing arm according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the rear guide swing arm according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the rear lower control arm according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the rear control swing arm according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of the rear upper swing arm according to an embodiment of the present invention.

[0020] Figure label: 1. Front subframe; 11. First body mounting point; 12. Front stabilizer bar mounting point; 13. Steering gear mounting point; 14. Front powertrain mounting point; 15. Front lower control arm mounting point; 2. Front upper control arm; 21. Front mounting point of front upper control arm; 22. Rear mounting point of front upper control arm; 23. Outer point of front upper control arm; 3. Front lower control arm; 31. Front mounting point of front lower control arm; 32. Rear mounting point of front lower control arm; 33. Outer point of front lower control arm; 34. Mounting point of first shock absorber; 35. Mounting point of first height sensor; 4. Rear subframe; 41. Second body mounting point; 42. Rear upper control arm mounting point; 43. Rear control arm mounting point; 44. Rear lower control arm mounting point; 45. Rear guide arm mounting point; 46. Rear traction arm mounting point; 47. Rear stabilizer bar mounting point; 48. Rear powertrain mounting point; 5. Rear towing arm; 51. Rear towing arm mounting point; 52. Fifth steering knuckle mounting point; 6. Rear guide arm; 61. Rear guide arm mounting point; 62. Fourth steering knuckle mounting point; 63. Second height sensor mounting point; 7. Rear lower control arm; 71. Third steering knuckle mounting point; 72. Rear lower control arm mounting point; 73. Second shock absorber mounting point; 8. Rear control arm; 81. Rear control arm mounting point; 82. Second steering knuckle mounting point; 9. Rear upper control arm; 91. First steering knuckle mounting point; 92. Rear upper control arm mounting point. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0022] The following is for reference. Figures 1-5 A front suspension assembly according to an embodiment of the present invention is described, and, with reference to Figures 6-12The rear suspension assembly described in the embodiments of the present invention is further described, and the present invention also proposes a suspension system.

[0023] Combination Figures 1-5 As shown, the front suspension assembly according to an embodiment of the present invention includes: a front subframe 1, two front upper control arms 2 and two front lower control arms 3. The two front upper control arms 2 are respectively disposed on both sides of the front subframe 1 in the width direction, and the two front lower control arms 3 are respectively disposed on both sides of the front subframe 1 in the width direction. The front upper control arms 2 are disposed on the upper side of the front lower control arms 3.

[0024] Specifically, the front subframe 1 undergoes topology optimization to form multiple first hollows, and the front upper control arm 2 and front lower control arm 3 undergo topology optimization to form multiple second hollows on the arm body. That is, by performing topology optimization on the front subframe 1, front upper control arm 2, and front lower control arm 3, multiple first hollows are set on the front subframe 1, and multiple second hollows are set on the front upper control arm 2 and front lower control arm 3, thereby achieving weight reduction of the front suspension assembly.

[0025] Thus, based on the vehicle's load and strength and durability requirements, the front suspension assembly is structurally optimized using a topology method to achieve the requirement of lightweighting the front suspension assembly. This not only meets the safety performance and service life of the suspension system but also enables the vehicle to achieve higher handling performance.

[0026] like Figure 3 As shown, the front subframe 1 is provided with multiple front fixing points, and the front subframe 1 is provided with two first crossbeams spaced apart in the front-rear direction. After topology optimization, the front subframe 1 has multiple first hollows formed on the periphery of at least one front fixing point and / or on at least one first crossbeam.

[0027] Multiple front mounting points include: first body mounting point 11, front stabilizer bar mounting point 12, steering gear mounting point 13, front powertrain mounting point 14, and front lower control arm mounting point 15.

[0028] Specifically, a first hollow is designed at a radius of 100mm around the first body fixing point 11, a radius of 50mm around the front stabilizer bar fixing point 12, a radius of 80mm around the steering gear fixing point 13, a radius of 100mm around the front powertrain fixing point 14, and a distance of 540mm between the two first crossbeams to reduce weight.

[0029] Furthermore, a 400mm gap is created in front of and behind the fixed point 15 of the front lower control arm.

[0030] Thus, by optimizing the topology of the front subframe 1, the cost of the front subframe 1 is reduced by 18%, and its weight is reduced by more than 25%.

[0031] like Figure 4As shown, the front upper control arm 2 has two first arm bodies. One end of each first arm body has a front upper control arm outer point 23, and the other end of each first arm body has two front upper control arm mounting points. The two front upper control arm mounting points are connected to the front subframe 1. Multiple second hollows are formed on the first arm bodies. That is, multiple second hollows are formed on the first arm bodies to reduce weight while ensuring sufficient strength margin for the front upper control arm 2.

[0032] Specifically, a second hollow is designed on the first arm body at 25mm, 100mm, and 200mm from one of the front upper swing arm mounting points, and at 50mm from the other front upper swing arm mounting point, and at 60mm, 80mm, 125mm, 150mm, and 200mm from the outer point 23 of the front upper swing arm, to reduce weight.

[0033] Specifically, one of the front upper control arm mounting points is the front upper control arm mounting point 21, and the other front upper control arm mounting point is the rear upper control arm mounting point 22.

[0034] Thus, by optimizing the topology of the front upper control arm 2, the cost of the front upper control arm 2 is reduced by 10%, and its weight is reduced by more than 12%.

[0035] like Figure 5 As shown, the front lower control arm 3 includes a second arm body. The end of the second arm body has two front lower control arm mounting points and a front lower control arm outer point 33. The second arm body also has a first damper mounting point 34 for fixing a damper and a first height sensor mounting point 35 for fixing a height sensor. The periphery of the first damper mounting point 34, the first height sensor mounting point 35, and one of the front lower control arm mounting points has a second perforation. That is, multiple second perforations are formed on the second arm body, thereby reducing weight while ensuring sufficient strength margin for the front lower control arm 3.

[0036] Specifically, a second hollow is designed on the second arm at 25mm, 50mm, 75mm, 110mm, and 270mm from one of the front lower swing arm mounting points, and at 120mm from the first shock absorber mounting point 34 and 25mm from the first height sensor mounting point 35 to reduce weight.

[0037] Specifically, another front lower control arm mounting point is the front mounting point 31 of the front lower control arm, and one of the front lower control arm mounting points is the rear mounting point 32 of the front lower control arm.

[0038] Thus, by optimizing the topology of the front lower control arm 3, the cost of the front lower control arm 3 is reduced by 12%, and its weight is reduced by more than 14%.

[0039] In summary, combining Figures 1-5As shown, by optimizing the topology of the front subframe 1, front upper control arm 2, and front lower control arm 3, and satisfying the requirements of necessary connections such as the first body fixing point 11, front stabilizer bar fixing point 12, steering gear fixing point 13, front powertrain fixing point 14, front lower control arm fixing point, front lower control arm rear fixing point, front upper control arm mounting point 21, front upper control arm rear mounting point 22, front upper control arm outer point 23, front lower control arm front mounting point 31, front lower control arm rear mounting point 35, front lower control arm outer point 33, first shock absorber mounting point 34, and first height sensor mounting point 35, and based on the overall vehicle load and strength and durability requirements, the other structures of the front subframe 1, front upper control arm 2, and front lower control arm 3 are optimized with an extreme topology scheme to achieve the purpose of lightweighting and weight reduction.

[0040] Furthermore, the front subframe 1 is connected to the first body mounting point 11 and the body by eight bolts; the front stabilizer bar is mounted on the front stabilizer bar mounting point 12 by four bolts; the steering assembly is fixed to the steering assembly mounting point 13 by two bolts; the front powertrain is fixed to the front powertrain mounting point 14 by three-point mounts; the front point of the front lower control arm 3 is fixed to the front mounting point 31 of the front lower control arm by two bolts; the rear point of the front lower control arm 3 is fixed to the rear mounting point 35 of the front lower control arm by two bolts; the inner point of the front upper control arm 2 is fixed to the body by eight bolts; the outer point 23 of the front upper control arm is fixed to the steering knuckle by a ball joint; and the outer point 33 of the front lower control arm is fixed to the steering knuckle by a ball joint. The above-described components form the front suspension assembly of the vehicle.

[0041] Among them, the front powertrain can be a drive motor.

[0042] Combination Figures 6-12 As shown, the rear suspension assembly of this embodiment includes: a rear subframe 4, a rear traction control arm 5, a rear guide control arm 6, a rear lower control arm 7, a control arm 8, and a rear upper control arm 9. The rear traction control arm 5, the rear guide control arm 6, the rear lower control arm 7, the rear control arm 8, and the rear upper control arm 9 are all connected to the rear subframe 4. The rear suspension assembly is a five-link structure.

[0043] Among them, the rear traction swing arm 5, the rear guide swing arm 6, the rear lower swing arm 7, the control swing arm and the rear upper swing arm 9 are two sets, and are respectively set on both sides of the rear subframe 4.

[0044] The rear subframe 4 undergoes topology optimization to form multiple third hollows, and the rear traction control arm 5, rear guide control arm 6, rear lower control arm 7, rear control control arm 8, and rear upper control arm 9 undergo topology optimization to form multiple fourth hollows on the arm body. In other words, by performing topology optimization on the rear subframe 4 and the rear traction control arm 5, rear guide control arm 6, rear lower control arm 7, rear control control arm 8, and rear upper control arm 9, multiple third hollows are provided on the rear subframe 4, and multiple fourth hollows are provided on the rear traction control arm 5, rear guide control arm 6, rear lower control arm 7, rear control control arm 8, and rear upper control arm 9, thereby achieving weight reduction in the rear suspension assembly.

[0045] Thus, based on the vehicle's load and strength durability requirements, the rear suspension assembly is structurally optimized using a topology approach to achieve lightweighting of the rear suspension assembly. This not only meets the safety performance and service life requirements of the suspension system but also enables the vehicle to achieve higher handling performance.

[0046] The rear suspension assembly uses AM400 material and 3D printing process to reduce weight.

[0047] like Figure 7 As shown, the rear subframe 4 is provided with multiple rear fixing points, and the rear subframe 4 is provided with two second crossbeams spaced apart in the front-rear direction. After topology optimization, the rear subframe 4 has multiple third hollows formed on the periphery of at least one rear fixing point and / or on at least one second crossbeam.

[0048] The multiple rear fixing points include: second body fixing point 41, rear upper swing arm fixing point 42, rear control swing arm fixing point 43, rear lower swing arm fixing point 44, rear guide swing arm fixing point 45, rear traction swing arm fixing point 46, rear stabilizer bar fixing point 47, and rear powertrain fixing point 48.

[0049] Specifically, within the radius of approximately 80mm, 160mm, 145mm, and 150mm around the four second vehicle body fixing points 41; within the radius of approximately 70mm, 100mm, 125mm, and 150mm around the rear upper swing arm fixing point 42; within the radius of approximately 55mm around the rear control swing arm fixing point 43; within the radius of approximately 75mm and 95mm around the rear lower swing arm fixing point 44; within the radius of approximately 58mm, 70mm, and 80mm around the rear guide swing arm fixing point 45; and within the radius of the rear traction swing arm fixing point... Within a radius of approximately 58mm and 70mm around the 46th perimeter, within a radius of approximately 40mm and 80mm around the rear stabilizer bar fixing point 47, and within a radius of approximately 80mm, 120mm, and 160mm around the rear powertrain fixing point 48, a third hollow is designed at approximately 440mm and 800mm apart on the left and right sides of the two second crossbeams, and approximately 16mm, 65mm, 90mm, 120mm, 140mm, 218mm, 259mm, 287mm, 381mm, and 395mm from the left side, to reduce weight.

[0050] Thus, by optimizing the topology of the rear subframe 4, the cost of the rear subframe 4 is reduced by 16%, and its weight is reduced by more than 35%.

[0051] like Figure 8 As shown, the rear traction control arm 5 includes: a third arm body, one end of which is provided with a rear traction control arm mounting point 51, which is connected to the rear subframe 4; and multiple fourth hollows are formed on the third arm body. That is, multiple fourth hollows are formed on the third arm body to reduce weight while ensuring sufficient strength margin for the rear traction control arm 5.

[0052] Specifically, a fourth hollow section is designed on the third arm at distances of 25mm, 52mm, 115mm, 158mm, and 180mm from the rear traction swing arm mounting point 51 to reduce weight.

[0053] Thus, by optimizing the topology of the rear traction control arm 5, the cost of the rear traction control arm 5 is reduced by 13%, and its weight is reduced by more than 10%.

[0054] like Figure 9 As shown, the rear guide arm 6 includes: a fourth arm body, one end of which is provided with a rear guide arm mounting point 61, which is connected to the rear subframe 4; and multiple fourth hollows are formed on the fourth arm body. That is, multiple fourth hollows are formed on the fourth arm body to reduce weight while ensuring sufficient strength margin for the rear guide arm 6.

[0055] Specifically, a fourth hollow is designed on the fourth arm body at a distance of 35-45mm from the mounting point 61 of the rear guide arm to reduce weight.

[0056] Thus, by optimizing the topology of the rear guide arm 6, the cost of the rear guide arm 6 is reduced by 6% and its weight is reduced by more than 5%.

[0057] like Figure 11 As shown, the rear control swing arm 8 includes a fifth arm body, one end of which is provided with a rear control swing arm mounting point 81 and the other end is provided with a first steering knuckle mounting point 91. The rear control swing arm mounting point 81 is connected to the rear subframe 4, and the first steering knuckle mounting point 91 is connected to the steering knuckle. Multiple fourth hollows are formed on the fifth arm body. That is, multiple fourth hollows are formed on the fifth arm body to reduce weight while ensuring sufficient strength margin for the rear control swing arm 8.

[0058] Specifically, a fourth hollow is designed on the fifth arm at a distance of 45-55mm from the rear control arm mounting point 81 and at a distance of 55mm from the first steering knuckle mounting point 91 to reduce weight.

[0059] Thus, by optimizing the topology of the rear control arm 8, the cost of the rear control arm 8 is reduced by 6%, and its weight is reduced by more than 5%.

[0060] like Figure 12 As shown, the rear upper control arm 9 includes a sixth arm body, one end of which is provided with a rear upper control arm mounting point 92 and the other end is provided with a second steering knuckle mounting point 82. The rear upper control arm mounting point 92 is connected to the rear subframe 4, and the second steering knuckle mounting point 82 is connected to the steering knuckle. Multiple fourth hollows are formed on the sixth arm body. That is, multiple fourth hollows are formed on the sixth arm body to reduce weight while ensuring sufficient strength margin for the rear upper control arm 9.

[0061] Specifically, a fourth hollow is designed on the sixth arm at 70-75mm from the rear upper swing arm mounting point 92, and at 120-130mm and 135-145mm from the second steering knuckle mounting point 82 to reduce weight.

[0062] Thus, by optimizing the topology of the rear upper control arm 9, the cost of the rear upper control arm 9 is reduced by 5%, and its weight is reduced by more than 7%.

[0063] like Figure 10 As shown, the rear lower control arm 7 includes a seventh arm body, one end of which is provided with a rear lower control arm mounting point 72, and a second shock absorber mounting point 73 for fixing the shock absorber is provided on the seventh arm body. The rear lower control arm mounting point 72 is connected to the rear subframe 4. Multiple fourth hollows are formed on the seventh arm body, and at least part of the interior of the seventh arm body is hollow. In other words, by performing topology optimization on the rear lower control arm 7, the weight of the seventh arm body of the rear lower control arm 7 can be reduced. That is, multiple fourth hollows are formed on the seventh arm body, and the interior of the seventh arm body is hollowed out, thereby reducing weight while ensuring sufficient strength margin for the rear lower control arm 7.

[0064] Specifically, a fourth hollowing-out design is made at 12-17mm from the rear lower swing arm mounting point 72 on the seventh arm body, and at 35-45mm from the seventh arm body and the second shock absorber mounting point 73 to reduce weight. Furthermore, after hollowing out the seventh arm body, the maximum wall thickness of the seventh arm body is 11mm.

[0065] Thus, by optimizing the topology of the rear lower control arm 7, the cost of the rear lower control arm 7 is reduced by 13%, and its weight is reduced by more than 19%.

[0066] In summary, combining Figures 6-12 As shown, by optimizing the topology of the rear subframe 4, rear traction control arm 5, rear guide control arm 6, rear lower control arm 7, rear control control arm 8, and rear upper control arm 9, the following conditions are met: Second body fixing point 41, rear upper control arm fixing point 42, rear control control arm fixing point 43, rear lower control arm fixing point 44, rear guide control arm fixing point 45, rear traction control arm fixing point 46, rear stabilizer bar fixing point 47, rear powertrain fixing point 48, rear traction control arm 5 and rear traction control arm mounting point 51, rear traction control arm 5 and fifth steering knuckle mounting point 52, rear guide control arm 6 and rear guide control arm mounting point 61, rear guide control arm 6 and fourth steering knuckle mounting point 62, and rear guide control arm 6 and... The requirements for necessary connections such as the second height sensor mounting point 63, the rear lower control arm 7 and the rear lower control arm mounting point 72, the rear lower control arm 7 and the third steering knuckle mounting point 71, the rear lower control arm 7 and the second shock absorber mounting point 73, the rear control control arm 8 and the rear control control arm mounting point 81, the rear control control arm 8 and the second steering knuckle mounting point 82, the rear upper control arm 9 and the rear upper control arm mounting point 92, and the rear upper control arm 9 and the first steering knuckle mounting point 91, etc., are optimized using an extreme topology scheme based on the overall vehicle load and strength and durability requirements, to achieve the goal of lightweighting and weight reduction.

[0067] The rear upper control arm 9 is connected to the rear subframe 4 at the rear upper control arm mounting point 92 by a bolt; the rear control control arm 8 is connected to the rear subframe 4 at the rear control control arm mounting point 81 by a bolt; the rear lower control arm 7 is connected to the rear subframe 4 at the rear lower control arm mounting point 72 by a bolt; the rear guide control arm 6 is connected to the rear subframe 4 at the rear guide control arm mounting point 61 by a bolt; the rear traction control arm 5 is connected to the rear subframe 4 at the rear traction control arm mounting point 51 by a bolt; the rear stabilizer bar is connected to the rear subframe 4 at the rear stabilizer bar fixing point 47 by four bolts; and the rear powertrain is connected to the rear subframe 4 at the rear powertrain fixing point 48 by a four-point mount.

[0068] Furthermore, the rear upper control arm 9 is connected to the steering knuckle at the first steering knuckle mounting point 91 by a bolt; the rear control control arm 8 is connected to the steering knuckle at the second steering knuckle mounting point 82 by a bolt; the rear lower control arm 7 is connected to the steering knuckle at the third steering knuckle mounting point 71 by a bolt; the rear shock absorber is connected to the rear lower control arm 7 at the second shock absorber mounting point 73 by a bolt; the rear guide control arm 6 is connected to the steering knuckle at the fourth steering knuckle mounting point 62 by a bolt; the rear height sensor is connected to the rear guide control arm 6 at the second height sensor mounting point 63 by a bolt; and the rear traction control arm 5 is connected to the steering knuckle at the fifth steering knuckle mounting point 52 by a bolt. The above-described components form the rear suspension assembly of the vehicle.

[0069] Among them, the rear powertrain can be a drive motor.

[0070] A suspension system according to a third aspect of the present invention includes: a front suspension assembly and / or a rear suspension assembly.

[0071] In the description of this invention, 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 invention and simplifying the description, and do not 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 invention.

[0072] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0073] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A front suspension assembly, characterized in that, include: The vehicle includes a front subframe, two upper front control arms, and two lower front control arms. The two upper front control arms are respectively located on both sides of the front subframe in the width direction, and the two lower front control arms are respectively located on both sides of the front subframe in the width direction. The upper front control arms are located above the lower front control arms. The front subframe has multiple first hollows formed through topology optimization, and the front upper swing arm and the front lower swing arm have multiple second hollows formed on the arm body through topology optimization.

2. The front suspension assembly according to claim 1, characterized in that, The front subframe is provided with multiple front fixing points, and the front subframe is provided with two first crossbeams spaced apart in the front-rear direction; The front subframe has multiple first openings formed on the periphery of at least one of the front fixing points and / or on at least one of the first crossbeams after topology optimization.

3. The front suspension assembly according to claim 1, characterized in that, The front upper swing arm is provided with two first arm bodies. One end of the two first arm bodies is provided with a front upper swing arm outer point, and the other end of the two first arm bodies is provided with two front upper swing arm mounting points respectively. The two front upper swing arm mounting points are connected to the front subframe, and multiple second hollows are formed on the first arm bodies.

4. The front suspension assembly according to claim 1, characterized in that, The front lower control arm includes a second arm body, the end of which is provided with two front lower control arm mounting points and a front lower control arm outer point, and the second arm body is provided with a first damper mounting point for fixing a damper and a first height sensor mounting point for fixing a height sensor, and the periphery of the first damper mounting point, the first height sensor mounting point and one of the front lower control arm mounting points is provided with the second hollow.

5. A rear suspension assembly, characterized in that, include: The rear subframe, rear traction swing arm, rear guide swing arm, rear lower swing arm, control swing arm, and rear upper swing arm are all connected to the rear subframe. The rear subframe has multiple third hollows formed through topology optimization, and the rear traction swing arm, the rear guide swing arm, the rear lower swing arm, the rear control swing arm, and the rear upper swing arm have multiple fourth hollows formed on the arm body through topology optimization.

6. The rear suspension assembly according to claim 5, characterized in that, The rear subframe is provided with multiple rear fixing points, and the rear subframe is provided with two second crossbeams spaced apart in the front-rear direction; The rear subframe has multiple third openings formed around at least one of the rear fixing points and / or on at least one of the second crossbeams after topology optimization.

7. The rear suspension assembly according to claim 5, characterized in that, The rear towing swing arm includes: a third arm body, one end of which is provided with a rear towing swing arm mounting point, the rear towing swing arm mounting point being connected to the rear subframe, and multiple fourth hollows formed on the third arm body; and... The rear guide arm includes a fourth arm body, one end of which is provided with a rear guide arm mounting point, the rear guide arm mounting point being connected to the rear subframe, and multiple fourth hollows being formed on the fourth arm body.

8. The rear suspension assembly according to claim 5, characterized in that, The rear control swing arm includes: a fifth arm body, one end of which is provided with a rear control swing arm mounting point and the other end of which is provided with a first steering knuckle mounting point. The rear control swing arm mounting point is connected to the rear subframe, and the first steering knuckle mounting point is connected to the steering knuckle. Multiple fourth hollows are formed on the fifth arm body. The rear upper control arm includes a sixth arm body, one end of which is provided with a rear upper control arm mounting point and the other end is provided with a second steering knuckle mounting point. The rear upper control arm mounting point is connected to the rear subframe, and the second steering knuckle mounting point is connected to the steering knuckle. The sixth arm body has multiple fourth hollows formed on it.

9. The rear suspension assembly according to claim 5, characterized in that, The rear lower control arm includes a seventh arm body, one end of which is provided with a rear lower control arm mounting point and a second shock absorber mounting point for fixing the shock absorber is provided on the seventh arm body. The rear lower control arm mounting point is connected to the rear subframe. Multiple fourth hollows are formed on the seventh arm body, and the interior of the seventh arm body is at least partially hollow.

10. A suspension system, characterized in that, include: The front suspension assembly according to any one of claims 1-4 and / or the rear suspension assembly according to any one of claims 5-9.

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