Suspension, chassis and vehicle

Abstract

The utility model discloses a suspension, chassis and vehicle, the suspension comprises two steering knuckles, two lower connecting rods and a transverse plate spring, the left and right ends of the transverse plate spring are respectively connected with the lower ends of the two steering knuckles, and the transverse plate spring is provided with a first elastic element used for being connected with a vehicle body. The two lower connecting rods correspond to the two steering knuckles respectively, one end of each lower connecting rod is connected with the lower end of the corresponding steering knuckle, the other end of each lower connecting rod is provided with a second elastic element used for being connected with a vehicle body, and the lower connecting rod located on the left side obliquely extends forwards or backwards in the direction from left to right. The lower connecting rod located on the right side obliquely extends forwards or backwards in the direction from right to left. According to the suspension provided by the embodiment of the utility model, the number of parts of the suspension is small, the occupied space is small, and the vehicle has good controllability and comfort.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a suspension, chassis and vehicle. Background Technology

[0002] As a crucial structure of a vehicle's chassis, the suspension system transmits forces and torques between the wheels and the vehicle body, cushions the impacts from uneven road surfaces, and reduces resulting vibrations to ensure a smooth ride. Therefore, the suspension's structure influences vehicle performance, affecting aspects such as handling and comfort.

[0003] However, in related technologies, vehicle suspension structures are complex and require significant space for installation, and they cannot simultaneously achieve both good handling and comfort. Therefore, how to simplify the suspension structure, save space for suspension installation, and still maintain good handling and comfort remains a technical problem to be solved. Utility Model Content

[0004] This utility model provides a suspension, chassis, and vehicle. The suspension has fewer components, occupies less space, and enables the vehicle to have both good handling and comfort.

[0005] In a first aspect, this utility model provides a suspension, comprising: two steering knuckles spaced apart on the left and right; a transverse leaf spring extending in a left-right direction, the left and right ends of the transverse leaf spring respectively connecting to the lower ends of the two steering knuckles, the transverse leaf spring being provided with a first elastic element for connecting to the vehicle body; and two lower links arranged on the left and right, each corresponding to one of the two steering knuckles, one end of each lower link connecting to the lower end of the corresponding steering knuckle, and the other end of each lower link being provided with a second elastic element for connecting to the vehicle body; wherein the lower link on the left extends obliquely forward or backward in a left-to-right direction, and the lower link on the right extends obliquely forward or backward in a right-to-left direction.

[0006] In the above technical solution, by setting a transverse leaf spring extending in the left and right direction, the coil spring, stabilizer bar assembly, and one arm of the lower control arm in the traditional suspension can be replaced. The lower link can replace the other arm in the lower control arm of the traditional suspension. This can reduce the number of suspension components and save suspension layout space. Furthermore, by setting the transverse leaf spring in the left and right direction, the vehicle can be provided with good handling. Setting the lower link in the left and right direction to tilt forward or backward can provide the vehicle with good longitudinal flexibility and improve the overall smoothness and comfort of the vehicle. Thus, the vehicle can have both good handling and comfort.

[0007] In some embodiments, the projection of the first elastic element onto the horizontal plane is a first projection, the projection of the second elastic element onto the horizontal plane is a second projection, and the projection of the center hole of the steering knuckle onto the horizontal plane is a third projection. The third projection is opposite to the first projection in the left-right direction, and the second projection is located diagonally in front of or diagonally behind the third projection.

[0008] In the above technical solution, by making the projection of the first elastic element on the horizontal plane on the horizontal plane opposite to the projection of the center hole of the steering knuckle on the horizontal plane in the left-right direction, the vehicle can be better provided with good handling; by making the projection of the second elastic element on the horizontal plane on the lower link located obliquely in front of or behind the projection of the center hole of the steering knuckle on the horizontal plane, the vehicle can be better provided with good longitudinal flexibility, improving the overall smoothness and comfort of the vehicle, thereby enabling the vehicle to better combine good handling and comfort.

[0009] In some embodiments, the lower connecting rod is a separately molded part.

[0010] In the above technical solution, by making the lower link an independently molded part, different structures of lower links can be selected according to the design requirements of the suspension and chassis, or the positional relationship of the lower link relative to the steering knuckle can be adjusted, thereby making the design of the suspension and chassis more flexible. For example, it can improve the design freedom of the instantaneous center of motion of the side view geometry.

[0011] In some embodiments, at least a portion of the lower link is bent.

[0012] In the above technical solution, by making at least a portion of the lower connecting rod bend, the structural strength of the lower connecting rod can be improved and the deformation of the lower connecting rod can be reduced.

[0013] In some embodiments, the suspension includes an integrated bracket and a shock absorber, the shock absorber being disposed on the integrated bracket, and two integrated brackets being spaced apart from each other on the left and right, the two integrated brackets corresponding to the two steering knuckles respectively, and each integrated bracket being connected between the end of the transverse leaf spring and the corresponding steering knuckle.

[0014] In the above technical solution, by setting an integrated bracket, it is convenient to install the shock absorber on the integrated bracket, and it is also convenient to connect the transverse leaf spring to the steering knuckle. In this way, the integrated bracket can simultaneously connect the shock absorber, steering knuckle, transverse leaf spring, etc., which can make the suspension structure more compact. For example, it can make the suspension more compact in the vertical and longitudinal directions. In addition, since the transverse leaf spring can replace the coil spring of the traditional suspension, that is, the coil spring that is sleeved on the outer periphery of the shock absorber in the traditional suspension can be eliminated, thereby reducing the diameter of the shock absorber assembly. This is beneficial for the placement of other components near the shock absorber, and at the same time, the suspension height can be reduced, which is more in line with the design of the skateboard chassis.

[0015] In some embodiments, the projection of the center hole of the steering knuckle onto the horizontal plane is a third projection, and the projection of the integrated bracket onto the horizontal plane is a fourth projection, the fourth projection being opposite to the third projection in the left-right direction.

[0016] In the above technical solution, by making the projection of the integrated bracket on the horizontal plane and the projection of the center hole of the steering knuckle on the horizontal plane opposite each other in the left and right direction, the vehicle can be better provided with good handling.

[0017] In some embodiments, the connection position between the steering knuckle and the integrated bracket is the first connection position, the connection position between the shock absorber and the integrated bracket is the second connection position, and the connection position between the transverse leaf spring and the integrated bracket is the third connection position. The first connection position, the second connection position, and the third connection position are arranged in the left-right direction, and the second connection position is located between the first connection position and the third connection position.

[0018] In the above technical solution, by placing the connection position of the shock absorber and the integrated bracket between the connection position of the steering knuckle and the integrated bracket and the connection position of the transverse leaf spring and the integrated bracket in the left-right direction, the suspension components can be arranged reasonably and the structure can be compact, and the vehicle can be better provided with good handling.

[0019] In some embodiments, the lower connecting rod is located in front of or behind the integrated bracket.

[0020] In the above technical solution, by positioning the lower linkage as a whole in front of or behind the integrated bracket, the suspension components can be arranged reasonably and the structure can be compact, and the vehicle can be better provided with good longitudinal flexibility.

[0021] In some embodiments, a third elastic element is connected between the transverse leaf spring and the integrated bracket.

[0022] In the above technical solution, by connecting a third elastic element between the transverse leaf spring and the integrated bracket, the third elastic element can play a buffering role, thereby enhancing the buffering effect of the suspension and further improving the smoothness and comfort of the vehicle.

[0023] In some embodiments, the suspension includes an upper control arm connected to the upper end of the steering knuckle, the upper control arm being located on the outer periphery of the shock absorber.

[0024] In the above technical solution, by setting the upper control arm on the outer periphery of the shock absorber, since the transverse leaf spring can replace the coil spring of the traditional suspension, the coil spring that is sleeved on the outer periphery of the shock absorber in the traditional suspension can be eliminated. In this way, the upper control arm can make full use of the space on the outer periphery of the shock absorber and be set on the outer periphery of the shock absorber, making the overall suspension structure compact. Furthermore, when the upper control arm is set on the outer periphery of the shock absorber, the height of the upper control arm can be reduced, which is conducive to reducing the height of the chassis and decoupling the vehicle body and chassis.

[0025] In some embodiments, the projection of the second elastic element onto the horizontal plane is a second projection, and the projection of the upper swing arm onto the horizontal plane is a fifth projection, wherein the second projection is located in front of or behind the fifth projection.

[0026] In the above technical solution, by making the projection of the second elastic element on the horizontal plane located in front of or behind the projection of the upper control arm on the horizontal plane, the second elastic element can be offset forward or backward relative to the center hole of the steering knuckle, which can better provide good longitudinal flexibility for the vehicle and improve the smoothness and comfort of the whole vehicle.

[0027] In some embodiments, the suspension further includes a steering tie rod extending in a left-right direction, with the left and right ends of the steering tie rod respectively connected to two steering knuckles, and the steering tie rod and the transverse leaf spring arranged in a front-rear direction.

[0028] In the above technical solution, by arranging the steering tie rod and the transverse leaf spring along the front-rear direction, the suspension components can be arranged reasonably and the overall structure can be compact.

[0029] In some embodiments, the projection of the center hole of the steering knuckle onto the horizontal plane is a third projection, and the projection of the steering tie rod onto the horizontal plane is a sixth projection, the sixth projection being located in front of the third projection.

[0030] In the above technical solution, by making the projection of the steering tie rod on the horizontal plane in front of the projection of the center hole of the steering knuckle on the horizontal plane, the steering system can be set on the front side of the wheel center, which can provide the vehicle with better Ackerman steering performance.

[0031] In some embodiments, the projection of the second elastic element onto the horizontal plane is a second projection, and the projection of the steering tie rod onto the horizontal plane is a sixth projection, with the second projection located in front of or behind the sixth projection.

[0032] In the above technical solution, by making the projection of the second elastic element on the horizontal plane located in front of or behind the projection of the steering tie rod on the horizontal plane, the second elastic element can be offset forward or backward relative to the center hole of the steering knuckle, which can better provide good longitudinal flexibility for the vehicle and improve the smoothness and comfort of the whole vehicle.

[0033] Secondly, this utility model proposes a chassis, including: the suspension of the first aspect embodiment described above.

[0034] In the above technical solution, by setting the suspension as described above, the number of suspension components is small, the space occupied is small, and the vehicle can have both good handling and comfort.

[0035] Thirdly, this utility model proposes a vehicle, comprising: a chassis as described in the second aspect embodiment above; and a vehicle body disposed on the chassis.

[0036] In the above technical solution, by setting the chassis as described above, the vehicle can have both good handling and comfort.

[0037] Additional aspects and advantages of this 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

[0038] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0039] Figure 1 This is a perspective view of a suspension according to some embodiments of the present utility model;

[0040] Figure 2 yes Figure 1 A top view of the suspension;

[0041] Figure 3 yes Figure 1 Front view of the suspension in the middle;

[0042] Figure 4 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0043] Figure label:

[0044] 100. Vehicles;

[0045] 10. Chassis;

[0046] 20. Suspension; 11. Steering knuckle; 110. Center bore; 12. Lower link; 121. Second elastic element; 13. Integrated bracket; 14. Shock absorber; 15. Upper control arm; 16. Transverse leaf spring; 161. First elastic element; 162. Third elastic element; 171. First connection position; 172. Second connection position; 173. Third connection position; 18. Steering tie rod;

[0047] 30. Vehicle body; 40. Wheel. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0049] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order or hierarchy.

[0050] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments.

[0051] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "attachment," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this invention, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0053] In the embodiments of this utility model, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this utility model shown in the drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this utility model.

[0054] In this utility model, "multiple" refers to two or more (including two).

[0055] As a crucial structure of a vehicle's chassis, the suspension system transmits forces and torques between the wheels and the vehicle body, cushions the impacts from uneven road surfaces, and reduces resulting vibrations to ensure a smooth ride. Therefore, the suspension's structure influences vehicle performance, affecting aspects such as handling and comfort.

[0056] However, in related technologies, vehicle suspension structures are complex and require significant space for installation, and they cannot simultaneously achieve both good handling and comfort. Therefore, how to simplify the suspension structure, save space for suspension installation, and still maintain good handling and comfort remains a technical problem to be solved.

[0057] Based on this, the applicant proposes a suspension comprising: two steering knuckles spaced apart on the left and right, two lower links arranged on the left and right, and a transverse leaf spring. The transverse leaf spring extends in the left-right direction, and its left and right ends are respectively connected to the lower ends of the two steering knuckles. The transverse leaf spring is provided with a first elastic element for connecting to the vehicle body. The two lower links correspond to the two steering knuckles respectively. One end of each lower link is connected to the lower end of the corresponding steering knuckle, and the other end of each lower link is provided with a second elastic element for connecting to the vehicle body. The lower link on the left extends forward or backward in a left-to-right direction, and the lower link on the right extends forward or backward in a right-to-left direction.

[0058] The aforementioned suspension structure, by incorporating transverse leaf springs extending in the left-right direction, can replace the coil springs, stabilizer bar assembly, and one arm of the lower control arm in a traditional suspension. The lower link can replace the other arm of the lower control arm in a traditional suspension. This reduces the number of suspension components and saves space in the suspension layout. Furthermore, by arranging the transverse leaf springs in the left-right direction, it provides good vehicle handling. By tilting the lower link forward or backward in the left-right direction, it provides good longitudinal flexibility, improving the overall smoothness and comfort of the vehicle. Thus, the vehicle can possess both good handling and comfort.

[0059] The vehicles disclosed in this utility model embodiment can be fuel vehicles, natural gas vehicles, new energy vehicles or rail vehicles. New energy vehicles can be pure electric vehicles, hybrid vehicles or range-extended vehicles, etc.

[0060] The suspension 20, chassis 10, and vehicle 100 according to embodiments of the present invention are described below with reference to the accompanying drawings.

[0061] Reference Figure 1 and Figure 2 In a first aspect, the present invention provides a suspension 20, comprising: two steering knuckles 11 spaced apart on the left and right, two lower connecting rods 12 spaced on the left and right, and a transverse leaf spring 16. The transverse leaf spring 16 extends in the left and right direction, and its left and right ends are respectively connected to the lower ends of the two steering knuckles 11. The transverse leaf spring 16 is provided with a first elastic element 161 for connecting with the vehicle body 30. The two lower connecting rods 12 correspond to the two steering knuckles 11 respectively. One end of each lower connecting rod 12 is connected to the lower end of the corresponding steering knuckle 11, and the other end of each lower connecting rod 12 is provided with a second elastic element 121 for connecting with the vehicle body 30. The lower connecting rod 12 on the left extends forward or backward in a left-to-right direction, and the lower connecting rod 12 on the right extends forward or backward in a right-to-left direction.

[0062] The steering knuckle 11 is connected to the wheel 40, and the center hole 110 of the steering knuckle 11 is coaxial with the wheel 40, that is, the center of the center hole 110 of the steering knuckle 11 is coaxial with the wheel center of the wheel 40. The steering knuckle 11 on the left is connected to the wheel 40 on the left, and the steering knuckle 11 on the right is connected to the wheel 40 on the right.

[0063] The left and right ends of the transverse leaf spring 16 are respectively connected to the lower ends of the two steering knuckles 11. Specifically, the left end of the transverse leaf spring 16 is connected to the lower end of the steering knuckle 11 located on the left side, and the right end of the transverse leaf spring 16 is connected to the lower end of the steering knuckle 11 located on the right side.

[0064] The left and right ends of the transverse leaf spring 16 are respectively connected to the lower ends of the two steering knuckles 11. The left and right ends of the transverse leaf spring 16 can be directly connected to the lower ends of the two steering knuckles 11, or the left and right ends of the transverse leaf spring 16 can be indirectly connected to the lower ends of the two steering knuckles 11.

[0065] The transverse leaf spring 16 has good elasticity, which allows the suspension 20 to have good flexibility, thereby improving the cushioning of the vehicle 100.

[0066] The transverse leaf spring 16 is provided with first elastic elements 161. For example, two first elastic elements 161 are provided on the transverse leaf spring 16, and the two first elastic elements 161 are arranged at intervals in the left-right direction. The two first elastic elements 161 correspond to the two lower connecting rods 12 respectively. For example, the two first elastic elements 161 are located on the left and right sides of the middle part of the transverse leaf spring 16 in the left-right direction. The first elastic element 161 located on the left side of the middle part of the transverse leaf spring 16 corresponds to the lower connecting rod 12 located on the left, and the first elastic element 161 located on the right side of the middle part of the transverse leaf spring 16 corresponds to the lower connecting rod 12 located on the right.

[0067] The first elastic element 161 is used to connect with the body 30, for example, the first elastic element 161 is used to connect with the subframe of the body 30. By providing the first elastic element 161 connected to the body 30 on the transverse leaf spring 16, the connection between the transverse leaf spring 16 and the body 30 can be a flexible connection, reducing the transmission of vibration from the wheel 40 to the body 30.

[0068] The first elastic element 161 can be sleeved on the outside of the transverse leaf spring 16. For example, the first elastic element 161 can be fixed on the transverse leaf spring 16 by fasteners, or the first elastic element 161 can be integrally vulcanized on the transverse leaf spring 16.

[0069] The first elastic element 161 may be in the form of a block, and at least a portion of the first elastic element 161 may be made of rubber material, for example, at least a portion of the first elastic element 161 may be a rubber component.

[0070] One end of each lower link 12 is connected to the lower end of the corresponding steering knuckle 11. Specifically, one end of the lower link 12 on the left is connected to the lower end of the steering knuckle 11 on the left, and one end of the lower link 12 on the right is connected to the lower end of the steering knuckle 11 on the right.

[0071] The second elastic element 121 is used to connect with the body 30, for example, the second elastic element 121 is used to connect with the subframe of the body 30. By providing the second elastic element 121 connected to the body 30 on the lower link 12, the connection between the lower link 12 and the body 30 can be made flexible, reducing the transmission of vibration from the wheel 40 to the body 30. For example, the second elastic element 121 can be a bushing.

[0072] At least a portion of the second elastic element 121 can be embedded in the other end of the lower connecting rod 12. For example, the second elastic element 121 can be fixed to the lower connecting rod 12 by fasteners, or the second elastic element 121 can be integrally vulcanized onto the lower connecting rod 12.

[0073] The second elastic element 121 may be columnar, and at least a portion of the second elastic element 121 may be made of rubber material, for example, at least a portion of the second elastic element 121 may be a rubber component.

[0074] The transverse leaf spring 16 extends to the left and right, and its left and right ends are respectively connected to the two steering knuckles 11 on the left and right sides. In this way, when the wheel 40 is subjected to an external impact force and the impact force has an inward component in the left and right direction (the inward component refers to the direction towards the center of the vehicle 100), the transverse leaf spring 16 can resist the impact force in the left and right direction, provide better support for the steering knuckle 11 or the wheel 40 in the left and right direction, reduce the movement or sway of the wheel 40 in the left and right direction, and improve the controllability of the vehicle 100.

[0075] The lower link 12 located on the left extends forward or backward in a left-to-right direction. For example, the lower link 12 located on the left extends forward in a left-to-right direction, and the lower link 12 located on the left extends backward in a left-to-right direction. This allows at least a portion of the lower link 12 located on the left to be located diagonally in front of or diagonally behind the steering knuckle 11.

[0076] For example, the projection of the lower connecting rod 12 on the left side onto the horizontal plane is set at an angle greater than zero with the projection of the transverse leaf spring 16 onto the horizontal plane.

[0077] The lower link 12 on the right side extends obliquely forward or backward in a right-to-left direction. For example, the lower link 12 on the right side extends obliquely forward in a right-to-left direction, and the lower link 12 on the right side extends obliquely backward in a right-to-left direction. This allows at least a portion of the lower link 12 on the right side to be located obliquely in front of or obliquely behind the steering knuckle 11.

[0078] For example, the projection of the lower connecting rod 12 on the right side onto the horizontal plane forms an angle with the projection of the transverse leaf spring 16 onto the horizontal plane, and this angle is greater than zero.

[0079] When the vehicle 100 is traveling on an uneven road surface, if the front side of the tire is impacted, such as when the front side of the tire of the vehicle 100 collides with an obstacle on the ground, the lower link 12 is tilted, which can provide the vehicle 100 with backward movement and good longitudinal flexibility, thereby improving the smoothness and comfort of the whole vehicle.

[0080] In the above technical solution, by setting a transverse leaf spring 16 extending in the left and right direction, one of the coil springs, stabilizer bar assembly, and lower control arm of the traditional suspension can be replaced. The lower link 12 can replace the other arm of the lower control arm of the traditional suspension. This can reduce the number of suspension components 20 and save the space for the suspension 20. Furthermore, by setting the transverse leaf spring 16 in the left and right direction, the vehicle 100 can be provided with good handling. By setting the lower link 12 to be tilted forward or backward in the left and right direction, the vehicle 100 can be provided with good longitudinal flexibility, improving the smoothness and comfort of the whole vehicle. Thus, the vehicle 100 can have both good handling and comfort.

[0081] In addition, since the transverse leaf spring 16 can replace the coil spring of the traditional suspension, the coil spring that is sleeved on the outer periphery of the shock absorber 14 in the traditional suspension can be eliminated, thereby reducing the diameter of the shock absorber assembly. This is beneficial for the installation of other components near the shock absorber 14, which in turn helps to lower the height of the suspension 20 and better fits the skateboard chassis design.

[0082] In some embodiments, refer to Figure 2 The projection of the first elastic element 161 on the horizontal plane is the first projection, the projection of the second elastic element 121 on the horizontal plane is the second projection, and the projection of the center hole 110 of the steering knuckle 11 on the horizontal plane is the third projection. The third projection is opposite to the first projection in the left-right direction, and the second projection is located diagonally in front of or diagonally behind the third projection.

[0083] The second projection being located diagonally in front of or diagonally behind the third projection means that the entire second projection is located diagonally in front of or diagonally behind the third projection.

[0084] By making the projection of the first elastic element 161 on the horizontal plane opposite to the projection of the center hole 110 of the steering knuckle 11 on the horizontal plane in the left and right directions, the transverse leaf spring 16 can resist the impact force in the left and right directions, provide better support for the steering knuckle 11 or the wheel 40 in the left and right directions, reduce the movement or sway of the wheel 40 in the left and right directions, and improve the controllability of the vehicle 100.

[0085] By positioning the projection of the two elastic elements onto the horizontal plane at an angle to the front or rear of the projection of the center hole 110 of the steering knuckle 11 onto the horizontal plane, the vehicle 100 can be provided with backward movement when it is impacted at the front, such as when the front of the vehicle 100 impacts an obstacle on the ground. This provides good longitudinal flexibility and improves the overall smoothness and comfort of the vehicle.

[0086] In the above technical solution, by making the projection of the first elastic element 161 on the horizontal plane on the horizontal plane opposite to the projection of the center hole 110 of the steering knuckle 11 on the horizontal plane in the left-right direction, the vehicle 100 can be better provided with good handling. By making the projection of the second elastic element 121 on the horizontal plane on the horizontal plane located obliquely in front of or behind the projection of the center hole 110 of the steering knuckle 11 on the horizontal plane, the vehicle 100 can be better provided with good longitudinal flexibility, improving the overall smoothness and comfort of the vehicle, thereby enabling the vehicle 100 to have both good handling and comfort.

[0087] In some embodiments, the lower connecting rod 12 is a separately molded part.

[0088] After the lower connecting rod 12 and the steering knuckle 11 are formed independently, the lower connecting rod 12 is attached to the steering knuckle 11. The lower connecting rod 12 and the steering knuckle 11 can be movably connected. For example, the lower connecting rod 12 and the steering knuckle 11 can be connected by a ball joint structure.

[0089] In the above technical solution, by setting the lower link 12 as an independently formed part, different structures of the lower link 12 can be selected according to the design requirements of the suspension 20 and the chassis 10, or the positional relationship of the lower link 12 relative to the steering knuckle 11 can be adjusted, thereby making the design of the suspension 20 and the chassis 10 more flexible, for example, improving the design freedom of the instantaneous center of motion of the side view geometry.

[0090] In some embodiments, refer to Figure 3 At least a portion of the lower connecting rod 12 is bent.

[0091] For example, at least a portion of the lower link 12 can be bent upwards.

[0092] In the above technical solution, by making at least a portion of the lower connecting rod 12 bendable, the structural strength of the lower connecting rod 12 can be improved and the deformation of the lower connecting rod 12 can be reduced.

[0093] In some embodiments, refer to Figures 1-3The suspension 20 includes an integrated bracket 13 and a shock absorber 14. The shock absorber 14 is mounted on the integrated bracket 13. Each integrated bracket 13 is provided with a shock absorber 14. There are two integrated brackets 13 arranged at left and right intervals. The two integrated brackets 13 correspond to the two steering knuckles 11 respectively. Each integrated bracket 13 is connected between the end of the transverse leaf spring 16 and the corresponding steering knuckle 11.

[0094] Each integrated bracket 13 is connected between the end of the transverse leaf spring 16 and the corresponding steering knuckle 11. Specifically, the integrated bracket 13 on the left is connected between the left end of the transverse leaf spring 16 and the steering knuckle 11 on the left, and the integrated bracket 13 on the right is connected between the right end of the transverse leaf spring 16 and the steering knuckle 11 on the right.

[0095] The shock absorber 14 has the function of damping vibration. The upper end of the shock absorber 14 can be connected to the vehicle body 30 to reduce the transmission of vibration to the vehicle body 30.

[0096] The integrated bracket 13 can provide a platform for connecting shock absorbers 14, steering knuckles 11, transverse leaf springs 16, etc.

[0097] In the above technical solution, by setting up the integrated bracket 13, it is convenient to install the shock absorber 14 on the integrated bracket 13, and it is also convenient to connect the transverse leaf spring 16 to the steering knuckle 11. In this way, the integrated bracket 13 can simultaneously connect the shock absorber 14, the steering knuckle 11, the transverse leaf spring 16, etc., which can make the suspension 20 structure more compact. For example, it can make the suspension 20 more compact in the vertical and longitudinal directions. In addition, since the transverse leaf spring 16 can replace the coil spring of the traditional suspension, that is, the coil spring sleeved on the outer periphery of the shock absorber 14 in the traditional suspension can be eliminated, thereby reducing the diameter of the shock absorber assembly. This is beneficial for the setting of other components near the shock absorber 14, which helps to reduce the height of the suspension 20 and better fits the skateboard chassis design.

[0098] In some embodiments, refer to Figure 2 The projection of the center hole 110 of the steering knuckle 11 onto the horizontal plane is the third projection, and the projection of the integrated bracket 13 onto the horizontal plane is the fourth projection. The fourth projection and the third projection are opposite to each other in the left-right direction.

[0099] By making the projection of the integrated bracket 13 on the horizontal plane opposite to the projection of the center hole 110 of the steering knuckle 11 on the horizontal plane in the left and right directions, the integrated bracket 13 can withstand the impact force in the left and right directions, provide better support for the steering knuckle 11 or the wheel 40 in the left and right directions, reduce the movement or sway of the wheel 40 in the left and right directions, and improve the controllability of the vehicle 100.

[0100] In the above technical solution, by making the projection of the integrated bracket 13 on the horizontal plane and the projection of the center hole 110 of the steering knuckle 11 on the horizontal plane opposite to each other in the left and right direction, the vehicle 100 can be better provided with good handling.

[0101] In some embodiments, refer to Figure 3 The connection position between the steering knuckle 11 and the integrated bracket 13 is the first connection position 171, the connection position between the shock absorber 14 and the integrated bracket 13 is the second connection position 172, and the connection position between the transverse leaf spring 16 and the integrated bracket 13 is the third connection position 173. The first connection position 171, the second connection position 172 and the third connection position 173 are arranged in the left and right direction, and the second connection position 172 is located between the first connection position 171 and the third connection position 173.

[0102] In the above technical solution, in the left and right direction, by making the connection position of the shock absorber 14 and the integrated bracket 13 between the connection position of the steering knuckle 11 and the integrated bracket 13 and the connection position of the transverse leaf spring 16 and the integrated bracket 13, the components of the suspension 20 can be arranged reasonably and the structure can be compact, and it can better provide good handling for the vehicle 100.

[0103] In some embodiments, refer to Figure 2 The lower connecting rod 12 is located in front of or behind the integrated bracket 13.

[0104] In the above technical solution, by positioning the lower link 12 in front of or behind the integrated bracket 13, the components of the suspension 20 can be arranged reasonably and the structure can be compact, and the vehicle 100 can be better provided with good longitudinal flexibility.

[0105] In some embodiments, refer to Figure 3 A third elastic element 162 is connected between the horizontal leaf spring 16 and the integrated bracket 13.

[0106] A third elastic element 162 is connected between the horizontal leaf spring 16 and the integrated bracket 13, which makes the connection between the horizontal leaf spring 16 and the integrated bracket 13 a flexible connection.

[0107] At least a portion of the third elastic element 162 may be made of rubber, for example, at least a portion of the third elastic element 162 may be a rubber component.

[0108] In the above technical solution, by connecting the transverse leaf spring 16 and the integrated bracket 13 with a third elastic element 162, the third elastic element 162 can play a buffering role, thereby enhancing the buffering effect of the suspension 20 and further improving the smoothness and comfort of the vehicle 100.

[0109] In some embodiments, refer to Figures 1-3 The suspension 20 includes an upper control arm 15, which is connected to the upper end of the steering knuckle 11 and is located on the outer periphery of the shock absorber 14.

[0110] For example, the upper control arm 15 may include two control arms, one in front and one behind, each control arm being connected to the upper end of the steering knuckle 11, and each control arm may be in an arc shape that bends away from the shock absorber 14.

[0111] In the above technical solution, by setting the upper control arm 15 on the outer periphery of the shock absorber 14, since the transverse leaf spring 16 can replace the coil spring of the traditional suspension, that is, the coil spring sleeved on the outer periphery of the shock absorber 14 in the traditional suspension can be eliminated. In this way, the upper control arm 15 can make full use of the space on the outer periphery of the shock absorber 14 and is set on the outer periphery of the shock absorber 14, making the overall structure of the suspension 20 compact. Furthermore, when the upper control arm 15 is set on the outer periphery of the shock absorber 14, the height of the upper control arm 15 can be reduced, which is beneficial to reducing the height of the chassis 10 and to achieving the decoupling of the vehicle body 30 and the chassis 10 of the vehicle 100.

[0112] In some embodiments, refer to Figure 2 The projection of the second elastic element 121 onto the horizontal plane is the second projection, and the projection of the upper swing arm 15 onto the horizontal plane is the fifth projection. The second projection is located in front of or behind the fifth projection.

[0113] In the above technical solution, by making the projection of the second elastic element 121 on the horizontal plane located in front of or behind the projection of the upper control arm 15 on the horizontal plane, the second elastic element 121 can be offset forward or backward relative to the center hole 110 of the steering knuckle 11, which can better provide good longitudinal flexibility for the vehicle 100 and improve the smoothness and comfort of the whole vehicle.

[0114] In some embodiments, refer to Figures 1-2 The suspension 20 also includes a steering tie rod 18, which extends in the left-right direction. The left and right ends of the steering tie rod 18 are respectively connected to two steering knuckles 11. The steering tie rod 18 and the transverse leaf spring 16 are arranged in the front-rear direction.

[0115] The left and right ends of the steering tie rod 18 are connected to two steering knuckles 11 respectively. Specifically, the left end of the steering tie rod 18 is connected to the steering knuckle 11 located on the left side, and the right end of the steering tie rod 18 is connected to the steering knuckle 11 located on the right side.

[0116] For example, the steering tie rod 18 includes a left tie rod, a right tie rod, and a steering rack mechanism. The left tie rod and the right tie rod are arranged in the left-right direction and are connected by the steering rack mechanism. The left tie rod is connected to the steering knuckle 11 located on the left side, and the right tie rod is connected to the steering knuckle 11 located on the right side.

[0117] The steering tie rod 18 and the transverse leaf spring 16 are arranged in the front-rear direction. For example, the steering tie rod 18 can be located in front of the transverse leaf spring 16, or it can be located behind the transverse leaf spring 16.

[0118] For example, the steering tie rod 18 and the transverse leaf spring 16 can be approximately the same in height. The upper control arm 15 is located above the integrated bracket 13, and also above the steering tie rod 18 and the transverse leaf spring 16.

[0119] In the above technical solution, by arranging the steering tie rod 18 and the transverse leaf spring 16 in the front-rear direction, the components of the suspension 20 can be arranged reasonably and the overall structure can be compact.

[0120] In some embodiments, refer to Figure 2 The projection of the center hole 110 of the steering knuckle 11 onto the horizontal plane is the third projection, and the projection of the steering tie rod 18 onto the horizontal plane is the sixth projection, with the sixth projection located in front of the third projection.

[0121] In the above technical solution, by making the projection of the steering tie rod 18 on the horizontal plane in front of the projection of the center hole 110 of the steering knuckle 11 on the horizontal plane, the steering system can be set on the front side of the wheel center, which can provide better Ackerman steering performance for the vehicle 100.

[0122] In some embodiments, refer to Figure 2 The projection of the second elastic element 121 on the horizontal plane is the second projection, and the projection of the steering tie rod 18 on the horizontal plane is the sixth projection. The second projection is located in front of or behind the sixth projection.

[0123] In the above technical solution, by making the projection of the second elastic element 121 on the horizontal plane located in front of or behind the projection of the steering tie rod 18 on the horizontal plane, the second elastic element 121 can be offset forward or backward relative to the center hole 110 of the steering knuckle 11, which can better provide good longitudinal flexibility for the vehicle 100 and improve the smoothness and comfort of the whole vehicle.

[0124] Secondly, this utility model proposes a chassis 10, including: the suspension 20 of the first aspect embodiment described above.

[0125] In the above technical solution, by setting the suspension 20, the number of parts of the suspension 20 is small, the space occupied is small, and the vehicle 100 can have both good handling and comfort.

[0126] Reference Figure 4Thirdly, this utility model proposes a vehicle 100, including: a chassis 10 and a body 30 as described in the second aspect embodiment above, with the body 30 disposed on the chassis 10.

[0127] The wheels 40 of the vehicle 100 are mounted on the chassis 10 and are connected to the steering knuckle 11.

[0128] In the above technical solution, by setting the chassis 10, the vehicle 100 can have both good handling and comfort.

[0129] The following reference Figures 1-3 The suspension 20 is described according to some embodiments of the present invention.

[0130] Reference Figures 1-3 In this embodiment, the suspension 20 includes two steering knuckles 11 spaced apart on the left and right, two lower connecting rods 12 spaced on the left and right, two integrated brackets 13 spaced on the left and right, two shock absorbers 14 spaced on the left and right, two upper control arms 15 spaced on the left and right, a transverse leaf spring 16, and a steering tie rod 18.

[0131] A transverse leaf spring 16 extends in the left-right direction, and its left and right ends are respectively connected to two integrated brackets 13. Each integrated bracket 13 is equipped with a shock absorber 14, and each integrated bracket 13 is connected between the end of the transverse leaf spring 16 and the lower end of the corresponding steering knuckle 11. An upper control arm 15 is connected to the upper end of the steering knuckle 11 and is located on the outer periphery of the shock absorber 14. A steering tie rod 18 extends in the left-right direction, and its left and right ends are respectively connected to two steering knuckles 11. The steering tie rod 18 and the transverse leaf spring 16 are arranged in the front-rear direction.

[0132] The transverse leaf spring 16 is provided with a first elastic element 161, which is used to connect with the body 30. One end of each lower link 12 is connected to the lower end of the corresponding steering knuckle 11. The other end of each lower link 12 is provided with a second elastic element 121, which is used to connect with the body 30. A third elastic element 162 is connected between the transverse leaf spring 16 and the integrated bracket 13.

[0133] The lower link 12 on the left extends forward or backward in a left-to-right direction, while the lower link 12 on the left extends upward in a left-to-right direction; the lower link 12 on the right extends forward or backward in a right-to-left direction, while the lower link 12 on the right extends upward in a right-to-left direction.

[0134] In this embodiment, the suspension 20, by providing a transverse leaf spring 16 extending in the left-right direction, can replace the coil spring, stabilizer bar assembly, and one arm of the lower control arm in a traditional suspension. The lower link 12 can replace the other arm of the lower control arm in a traditional suspension. This reduces the number of components in the suspension 20 and saves space in the suspension 20 layout. Furthermore, by setting the transverse leaf spring 16 in the left-right direction, it can provide good handling for the vehicle 100. By setting the lower link 12 to tilt forward or backward in the left-right direction, it can provide good longitudinal flexibility for the vehicle 100 and improve the overall smoothness and comfort. Thus, the vehicle 100 can have both good handling and comfort.

[0135] The shock absorber 14 is mounted on the integrated bracket 13, which also facilitates the connection between the transverse leaf spring 16 and the steering knuckle 11. In this way, the integrated bracket 13 can simultaneously connect the shock absorber 14, the steering knuckle 11, the transverse leaf spring 16, etc., making the suspension 20 structure more compact. For example, the suspension 20 can be more compact in the vertical and longitudinal directions. In addition, since the transverse leaf spring 16 can replace the coil spring of the traditional suspension, the coil spring that is sleeved on the outer periphery of the shock absorber 14 in the traditional suspension can be eliminated, thereby reducing the diameter of the shock absorber assembly. This is beneficial for the placement of other components near the shock absorber 14. For example, the upper control arm 15 can make full use of the space on the outer periphery of the shock absorber 14 and be placed on the outer periphery of the shock absorber 14, making the overall structure of the suspension 20 more compact. Furthermore, when the upper control arm 15 is placed on the outer periphery of the shock absorber 14, the height of the upper control arm 15 can be reduced, which is beneficial for reducing the height of the chassis 10 and for decoupling the body 30 and chassis 10 of the vehicle 100.

[0136] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0137] Although embodiments of the present 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 present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A suspension characterized in that, The application relates to a suspension system for a vehicle, which comprises: two steering knuckles arranged at intervals in left and right directions; a transverse leaf spring extending in the left and right directions, the left and right ends of the transverse leaf spring being connected to the lower ends of the two steering knuckles respectively, and a first elastic element being arranged on the transverse leaf spring and used for connecting to a vehicle body; two lower connecting rods arranged at intervals in the left and right directions, the two lower connecting rods being corresponded to the two steering knuckles respectively, one end of each lower connecting rod being connected to the lower end of the corresponding steering knuckle, and a second elastic element being arranged on the other end of each lower connecting rod and used for connecting to the vehicle body; wherein the lower connecting rod on the left side extends obliquely forward or backward in the direction from left to right, and the lower connecting rod on the right side extends obliquely forward or backward in the direction from right to left.

2. The suspension of claim 1, wherein The projection of the first elastic element on a horizontal plane is a first projection, the projection of the second elastic element on the horizontal plane is a second projection, the projection of the central hole of the steering knuckle on the horizontal plane is a third projection, the third projection is opposite to the first projection in the left and right directions, and the second projection is located obliquely in front of or behind the third projection.

3. The suspension of claim 1, wherein The lower connecting rod is an independently formed part.

4. The suspension of claim 1, wherein At least part of the lower connecting rod is in a curved shape.

5. The suspension of any one of claims 1-4, wherein, The application further relates to a suspension system for a vehicle, which comprises an integrated support and a shock absorber arranged on the integrated support, the integrated support being arranged at intervals in left and right directions, the two integrated supports being corresponded to the two steering knuckles respectively, and each integrated support being connected between the end of the transverse leaf spring and the corresponding steering knuckle.

6. The suspension of claim 5, wherein, The projection of the central hole of the steering knuckle on a horizontal plane is a third projection, and the projection of the integrated support on the horizontal plane is a fourth projection, the fourth projection being opposite to the third projection in the left and right directions.

7. The suspension of claim 5 wherein, The connection position of the steering knuckle and the integrated support is a first connection position, the connection position of the shock absorber and the integrated support is a second connection position, the connection position of the transverse leaf spring and the integrated support is a third connection position, the first connection position, the second connection position and the third connection position are arranged in the left and right directions, and the second connection position is located between the first connection position and the third connection position.

8. The suspension of claim 5, wherein, The lower connecting rod is located in front of or behind the integrated support.

9. The suspension of claim 5 wherein, A third elastic element is connected between the transverse leaf spring and the integrated support.

10. The suspension of claim 5 wherein, The application further relates to a suspension system for a vehicle, which comprises an upper swing arm connected to the upper end of the steering knuckle, and the upper swing arm is located on the outer circumferential side of the shock absorber.

11. The suspension of claim 10, wherein, The projection of the second elastic element on a horizontal plane is a second projection, and the projection of the upper swing arm on the horizontal plane is a fifth projection, the second projection being located in front of or behind the fifth projection.

12. The suspension of claim 5, wherein, The application further relates to a suspension system for a vehicle, which further comprises a steering tie rod extending in the left and right directions, the left and right ends of the steering tie rod being connected to the two steering knuckles respectively, and the steering tie rod and the transverse leaf spring being arranged in the front and back directions.

13. The suspension of claim 12, wherein, The projection of the central hole of the steering knuckle on a horizontal plane is a third projection, and the projection of the steering tie rod on the horizontal plane is a sixth projection, the sixth projection being located in front of the third projection.

14. The suspension of claim 12, wherein, A projection of the second elastic element on a horizontal plane is a second projection, a projection of the tie rod on the horizontal plane is a sixth projection, and the second projection is located in front of or behind the sixth projection.

15. A chassis characterized by, Comprising: The suspension according to any one of claims 1-14.

16. A vehicle characterized by Comprising: The chassis according to claim 15; The vehicle body is provided on the chassis.

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