Suspension assembly and vehicle with same

Abstract

The utility model discloses a suspension assembly and a vehicle with the suspension assembly. The suspension assembly comprises wheels, a suspension assembly and a suspension assembly, a sub-frame; one end of the lower swing arm is connected with the wheel, and the other end of the lower swing arm is connected with the auxiliary frame; the plate spring is arranged on the lower side of the auxiliary frame, and a first connecting part used for being connected with the lower swing arm and a second connecting part used for being connected with the auxiliary frame are arranged in the length direction of the plate spring; in the left-right direction, the distance between the first connecting part and the wheel center of the wheel is a first distance, the distance between the first connecting part and the second connecting part is a second distance, and the first distance is smaller than the second distance. According to the suspension assembly disclosed by the utility model, the plate spring can occupy smaller dynamic space in the vertical direction, so that other parts in the suspension assembly can have larger arrangement space, and the suspension assembly is more convenient to arrange and assemble in a vehicle.

Description

[0001] This application is based on and claims priority to Chinese Patent Application No. 202311871285.1, filed on December 29, 2023, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The utility model relates to vehicle technical field especially is related to a suspension assembly and vehicle with it. BACKGROUND

[0003] The vehicle usually sets up the spring in the suspension and buffers the impact from the road, the spring is generally sleeved on the shock absorber and cooperates with the shock absorber, when the shock absorber is assembled with the spring, the arrangement of the shock absorber in the front-back direction and the left-right direction is greatly limited by the spring, which makes it difficult for the shock absorber to reduce the arrangement height in the up-down direction, thereby making the Z-direction space of the passenger compartment smaller, making the passengers more uncomfortable.

[0004] Therefore, in the related technology, a transversely arranged leaf spring is arranged in the vehicle to replace the spring, thereby effectively increasing the arrangement space of the passenger compartment in the Z-direction and improving the comfort of the passengers. However, the Z-direction space occupied by the leaf spring after assembly is relatively large, which makes the available space for assembling other components in the vehicle smaller, and the assembly is inconvenient. SUMMARY

[0005] The present utility model is based on the discovery of the following facts and problems by the inventors of the present application:

[0006] During the driving of the vehicle, the part of the leaf spring connected to the lower swing arm will swing up and down, and when the swing range is large, it is easy to interfere with other components. Therefore, a larger space for use of the leaf spring needs to be reserved in the vehicle, which reduces the available space for arranging and assembling other components, thereby making it inconvenient to install and arrange the components in the suspension assembly of the vehicle.

[0007] The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the present utility model proposes a suspension assembly, which can occupy a smaller Z-direction space when the leaf spring is in use, thereby facilitating the installation and arrangement of each component in the suspension assembly.

[0008] The present utility model also proposes a vehicle with the above-mentioned suspension assembly.

[0009] According to the suspension assembly of the utility model, through setting first connecting part and second connecting part which are connected with lower swing arm and auxiliary frame respectively on leaf spring, the distance between first center line of first connecting part and second center line of second connecting part in left and right direction is formed as first distance, the distance between first center line and third center line of wheel in left and right direction is formed as second distance, and first distance is less than second distance, so that leaf spring can have smaller dynamic space occupation in up and down direction, thereby making other components in suspension assembly can have larger arrangement space, and making arrangement and assembly of suspension assembly in vehicle more convenient.

[0010] According to the suspension assembly of the utility model, through setting first connecting part and second connecting part which are connected with lower swing arm and auxiliary frame respectively on leaf spring, the distance between first center line of first connecting part and second center line of second connecting part in left and right direction is formed as first distance, the distance between first center line and third center line of wheel in left and right direction is formed as second distance, and first distance is less than second distance, so that leaf spring can have smaller dynamic space occupation in up and down direction, thereby making other components in suspension assembly can have larger arrangement space, and making arrangement and assembly of suspension assembly in vehicle more convenient.

[0011] In addition, the suspension assembly according to the utility model can also have the following additional technical features:

[0012] In some embodiments of the utility model, the center line of the first connecting part in the left and right direction is the first center line, the center line of the second connecting part in the left and right direction is the second center line, the center line of the wheel in the left and right direction is the third center line, the first distance is the distance between the first center line and the second center line, and the second distance is the distance between the first center line and the third center line.

[0013] In some embodiments of the utility model, the ratio of the first distance to the second distance is greater than or equal to 0.5 and less than 1.

[0014] In some embodiments of the utility model, the suspension assembly further comprises: a shock absorber, the lower end of the shock absorber is connected to the lower swing arm, and the upper end is used for connecting the vehicle body.

[0015] In some embodiments of the utility model, the lower swing arm comprises: first branch arm, first branch arm left and right extension and with first connecting portion is connected, second branch arm, one end of second branch arm with first branch arm towards one end of auxiliary frame is connected, the other end of second branch arm is inclined to extend forward and towards auxiliary frame, the other end of second branch arm with auxiliary frame rotatable connection, third branch arm, one end of third branch arm with first branch arm towards one end of auxiliary frame is connected, the other end of third branch arm is inclined to extend backward and towards auxiliary frame, the other end of third branch arm with auxiliary frame rotatable connection, wherein, the other end of second branch arm and the other end of third branch arm one of in the upper side of auxiliary frame and the other in the lower side of auxiliary frame.

[0016] In some embodiments of the utility model, the leaf spring comprises: a leaf spring body extending in the left-right direction, the first connecting portion is formed at both ends of the leaf spring body, the leaf spring body is formed with two protruding sections arranged at intervals, the protruding section is formed by a part of the leaf spring body protruding upward from bottom, and at least part of the protruding section is formed as the second connecting portion.

[0017] In an embodiment of the utility model, the leaf spring has a first surface connected to the auxiliary frame in abutment, the distance between the first surface and the center line of the first connecting portion in the up-down direction is a first interval, and the first interval is greater than the maximum deflection of the leaf spring at the position of the first connecting portion.

[0018] In an embodiment of the utility model, the leaf spring body comprises: a main body section, the main body section is a left-right extending flat plate, two protruding sections are connected to the left and right ends of the main body section respectively, and two first connecting portions are connected to one end of the protruding section away from the main body section respectively.

[0019] In an embodiment of the utility model, the suspension assembly further comprises: a connecting bracket, the connecting bracket is plate-shaped extending in the front-back direction, the connecting bracket is arranged on the lower side of the protruding section, and the front and rear ends of the connecting bracket extend upward and are connected to the auxiliary frame through fasteners.

[0020] In some examples of the utility model, the leaf spring further comprises: a buffer, the buffer is arranged on the protruding section, the upper surface of the buffer is in abutment with the auxiliary frame, and the lower surface of the buffer is in abutment with the connecting bracket.

[0021] In some embodiments of the utility model, the first connecting portion is formed with a through hole, a first bushing is embedded in the through hole, and the first connecting portion is rotatably connected with the lower swing arm through the first bushing.

[0022] In some embodiments of the present application, the suspension assembly further comprises: a knuckle connected between the lower swing arm and the wheel on the side of the lower swing arm away from the leaf spring.

[0023] According to the vehicle of the second aspect of the present application, the suspension assembly according to the first aspect of the present application is provided, the leaf spring extends left and right, the number of the first connecting parts is two, the two first connecting parts are respectively formed at the left and right ends of the leaf spring, the two first connecting parts are respectively connected with the lower swing arms on the left and right sides of the vehicle, the number of the second connecting parts is two, the two second connecting parts are arranged between the two first connecting parts, and the two second connecting parts are respectively connected with the left and right sides of the sub-frame of the vehicle.

[0024] According to the vehicle of the present application, by providing the suspension assembly of the first aspect, by providing the first connecting part connected with the lower swing arm and the second connecting part connected with the sub-frame on the leaf spring, the distance between the first center line of the first connecting part and the second center line of the second connecting part in the left-right direction is formed as a first distance, the distance between the first center line and the third center line of the wheel in the left-right direction is formed as a second distance, and the first distance is smaller than the second distance. The leaf spring can have a smaller dynamic space occupation in the up-down direction, so that other components in the suspension assembly can have a larger arrangement space, and the arrangement and assembly of the suspension assembly in the vehicle are more convenient.

[0025] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic view of the suspension assembly according to an embodiment of the present application;

[0027] Figure 2 is a sectional view of the suspension assembly according to an embodiment of the present application;

[0028] Figure 3 is Figure 2 is a schematic view of the suspension assembly according to an embodiment of the present application;

[0029] Figure 4 is a schematic view of the suspension assembly according to an embodiment of the present application;

[0030] Figure 5 is a schematic view of the leaf spring according to an embodiment of the present application.

[0031] REFERENCE NUMERALS:

[0032] 10, wheel;

[0033] 20, lower swing arm; 21, first supporting arm; 22, second supporting arm; 23, third supporting arm;

[0034] 30, leaf spring; 31, main body of leaf spring; 311, first connecting part; 312, main body section; 313, protruding section; 3131, second connecting part;

[0035] 32, buffer; 321, sleeve part; 322, first abutting part; 323, first elastic connecting part; 324, second abutting part; 325, second elastic connecting part;

[0036] 40, sub-frame; 50, connecting support; 60, steering knuckle; 70, shock absorber;

[0037] 81, first bushing; 82, second bushing; 83, third bushing;

[0038] 100, suspension assembly. DETAILED DESCRIPTION

[0039] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0040] Reference will be made to Figures 1-5 The suspension assembly 100 according to the first aspect of the present application is described below.

[0041] As shown in Figures 1-5 The suspension assembly 100 according to the first aspect of the present application comprises a wheel 10, a sub-frame 40, a lower swing arm 20 and a leaf spring 30.

[0042] Specifically, one end of the lower swing arm 20 is connected to the wheel 10, and the other end is connected to the sub-frame 40; the leaf spring 30 is arranged on the lower side of the sub-frame 40, and the leaf spring 30 is provided with a first connecting part 311 for connecting to the lower swing arm 20 and a second connecting part 3131 for connecting to the sub-frame 40 in the length direction (e.g. left-right direction) of the leaf spring 30; wherein in the left-right direction, the distance from the first connecting part 311 to the wheel center of the wheel 10 is a first distance, and the distance from the first connecting part 311 to the second connecting part 3131 is a second distance, and the first distance is less than the second distance. Figure 2

[0043] ​When the suspension assembly 100 is assembled, the wheel 10 is connected with the lower swing arm 20, the lower swing arm 20 is connected with the auxiliary frame 40 and the leaf spring 30, and specifically, the lower swing arm 20 is rotationally connected with the first connecting portion 311 of the leaf spring 30, and the second connecting portion 3131 of the leaf spring 30 is connected with the auxiliary frame 40. During the driving of the vehicle, when the wheel 10 jumps up, the wheel 10 drives the lower swing arm 20 to move upward, so that the lower swing arm 20 drives the first connecting portion 311 of the leaf spring 30 to swing upward relative to the second connecting portion 3131. It can be understood that, in the left-right direction, the part of the leaf spring 30 between the first connecting portion 311 and the second connecting portion 3131 forms a cantilever structure relative to the second connecting portion 3131, and under the same force, the greater the distance between the first connecting portion 311 and the second connecting portion 3131, the greater the swing range of the first connecting portion 311 upward, and the greater the dynamic space occupation of the leaf spring 30 in the up-down direction of the vehicle (such as the up-down direction shown in the figure). Figure 1

[0044] In the embodiment, since the leaf spring 30 is connected with the lower swing arm 20, when the second distance is small, the first distance is set to be large correspondingly, and when the second distance is large, the first distance is set to be small correspondingly. In the embodiment, the first distance is set to be smaller than the second distance, so that the leaf spring 30 is designed and manufactured with the second distance being large and the first distance being small, so that the cantilever structure formed by the part of the leaf spring 30 between the first connecting portion 311 and the second connecting portion 3131 has a small size in the left-right direction, and further, the swing range of the first connecting portion 311 upward can be kept in a small range under the stress working condition of the vehicle in normal driving, so that the dynamic space occupation of the leaf spring 30 in the up-down direction of the vehicle is small, and further, other components in the suspension assembly 100 have a large arrangement space when assembled and arranged, so that the arrangement and assembly of the suspension assembly 100 in the vehicle are more convenient.

[0045] According to the suspension assembly 100 in the embodiment of the utility model, the first connecting portion 311 connected with the lower swing arm 20 and the second connecting portion 3131 connected with the auxiliary frame 40 are arranged on the leaf spring 30, the distance between the first center line of the first connecting portion 311 and the second center line of the second connecting portion 3131 in the left-right direction is formed as the first distance, the distance between the first center line and the third center line of the wheel 10 in the left-right direction is formed as the second distance, the first distance is smaller than the second distance, the leaf spring 30 can have a small dynamic space occupation in the up-down direction, so that other components in the suspension assembly 100 can have a large arrangement space, and the arrangement and assembly of the suspension assembly 100 in the vehicle are more convenient.

[0046] In some embodiments of the utility model, reference can be made to Figure 2 ​As shown, the center line of the first connecting portion 311 in the left-right direction can be a first center line, the center line of the second connecting portion 3131 in the left-right direction can be a second center line, the center line of the wheel 10 in the left-right direction can be a third center line, the first distance is the distance between the first center line and the second center line, and the second distance is the distance between the first center line and the third center line.

[0047] As shown in the figure, straight line L1 represents the first center line of the first connecting portion 311 in the left-right direction, straight line L2 represents the second center line of the second connecting portion 3131 in the left-right direction, and straight line L3 represents the third center line of the wheel 10 in the left-right direction. Figure 2 As shown in the figure, straight line L1 represents the first center line of the first connecting portion 311 in the left-right direction, straight line L2 represents the second center line of the second connecting portion 3131 in the left-right direction, and straight line L3 represents the third center line of the wheel 10 in the left-right direction.

[0048] The first distance and the second distance are determined by the first center line of the first connecting portion 311, the second center line of the second connecting portion 3131, and the third center line of the wheel 10, which facilitates the size design of the leaf spring 30 and the size cooperation design with the lower swing arm 20, and enables the suspension assembly 100 to better meet the needs of standardized design during design and manufacturing, and facilitates the design and manufacturing of the suspension assembly 100.

[0049] In some embodiments of the utility model, the ratio of the first distance to the second distance can be greater than or equal to 0.5 and less than 1. Figure 2

[0050] In the embodiment, the ratio of the first distance to the second distance is limited to be less than 1, and the first distance is less than the second distance, which can make the leaf spring 30 occupy a smaller space in the up-down direction, thereby facilitating the assembly and arrangement of the suspension assembly 100, avoiding the situation that some parts are arranged within the swing space of the leaf spring 30 due to a narrow arrangement space, reducing the probability of interference between the leaf spring 30 and other parts, and making the suspension assembly 100 operate more stably.

[0051] In the embodiment, the ratio of the first distance to the second distance is limited to be greater than or equal to 0.5, which can make the leaf spring 30 have sufficient cantilever length to perform good buffering operation, specifically, the first connecting portion 311 can perform good displacement relative to the second connecting portion 3131, the leaf spring 30 can form good deformation to absorb buffering vibration, the use needs of the leaf spring 30 are met, and the situation that the first connecting portion 311 and the second connecting portion 3131 are broken due to a too short distance in the left-right direction is avoided, thereby making the leaf spring 30 can have good damping and buffering effect.

[0052] ​For example, the ratio of the first distance to the second distance can be 0.5, 0.6, 0.7, 0.8, 0.9, etc. The specific value of the ratio of the first distance to the second distance can be reasonably set according to different needs of the arrangement of the suspension assembly 100 in the vehicle and different needs of the damping work of the leaf spring 30.

[0053] In some embodiments of the utility model, as shown in Figure 2 The suspension assembly 100 can also include a shock absorber 70, the lower end of the shock absorber 70 is connected to the lower swing arm 20, and the upper end is used to connect the vehicle body.

[0054] The shock absorber 70 in this embodiment can play a good role in attenuating vibration, making the vehicle body more stable during driving, and providing a good driving experience for the driver and passengers. In this embodiment, the leaf spring 30 is used to replace the original spring structure, so that the shock absorber 70 has a larger arrangement space in the front-rear direction (such as Figure 1 The shock absorber 70 is shown in the front-rear direction) and the left-right direction when arranged in the vehicle.

[0055] Referring to Figure 2 As shown in the figure, the arrangement height of the shock absorber 70 in the up-down direction can be reduced, for example, the shock absorber 70 can be more inclined in the left-right direction to reduce the overall height, so that the driver's cabin has a larger arrangement space in the up-down direction, making the driver and passengers more comfortable when sitting in the driver's cabin. The external space of the shock absorber 70 is larger, so that the shock absorber 70 has better heat dissipation effect.

[0056] In some embodiments of the utility model, as shown in Figure 1 And Figure 4 The lower swing arm 20 can include a first branch arm 21, a second branch arm 22 and a third branch arm 23, the first branch arm 21 extends left and right and is connected to the first connecting part 311; one end of the second branch arm 22 is connected to one end of the first branch arm 21 facing the auxiliary frame 40, the other end of the second branch arm 22 extends obliquely forward and faces the auxiliary frame 40, and the other end of the second branch arm 22 is rotatably connected to the auxiliary frame 40; one end of the third branch arm 23 is connected to one end of the first branch arm 21 facing the auxiliary frame 40, the other end of the third branch arm 23 extends obliquely backward and faces the auxiliary frame 40, and the other end of the third branch arm 23 is rotatably connected to the auxiliary frame 40, wherein one of the other end of the second branch arm 22 and the other end of the third branch arm 23 is located on the upper side of the auxiliary frame 40, and the other is located on the lower side of the auxiliary frame 40.

[0057] The lower swing arm 20 is provided with a first branch arm 21, a second branch arm 22 and a third branch arm 23 in the embodiment, the second branch arm 22 and the third branch arm 23 are rotatably connected with the auxiliary frame 40 in the front-rear direction, the connection is convenient, the lower swing arm 20 is stably and firmly connected with the auxiliary frame 40, so that the lower swing arm 20 can stably and reliably support the vehicle body.

[0058] Further, one of the other end of the second branch arm 22 and the other end of the third branch arm 23 is located on the upper side of the auxiliary frame 40, and the other is located on the lower side of the auxiliary frame 40, so that the lower swing arm 20 and the auxiliary frame 40 are clamped and connected in the up-down direction, so that the lower swing arm 20 can be more stably connected with the auxiliary frame 40, so that the lower swing arm 20 can better support the auxiliary frame 40 and the vehicle body.

[0059] The second branch arm 22 and the auxiliary frame 40 are rotatably connected, and the third branch arm 23 and the auxiliary frame 40 are rotatably connected, so that the lower swing arm 20 and the auxiliary frame 40 can rotate relative to each other, which can reduce the transmission of vibration to a certain extent, so that the auxiliary frame 40 can maintain a stable structure state, and the vehicle can run more stably.

[0060] In some embodiments of the utility model, reference Figure 2 and Figure 4 As shown in the figure, the first connecting part 311 is formed with a through hole, and the first bushing 81 is embedded in the through hole, and the first connecting part 311 is rotatably connected with the lower swing arm 20 through the first bushing 81.

[0061] The first bushing 81 is arranged at the first connecting part 311 in the embodiment, when the leaf spring 30 is connected with the lower swing arm 20, the leaf spring 30 can be connected with the lower swing arm 20 through the first bushing 81, after the lower swing arm 20 is connected and fixed with the leaf spring 30, the lower swing arm 20 can swing around the axis of the through hole to meet the use requirement of the suspension, the first bushing 81 can play a certain energy absorption and vibration reduction effect, and a certain damping effect is formed between the lower swing arm 20 and the leaf spring 30.

[0062] In an embodiment of the utility model, as shown in the figure, Figure 3 The suspension assembly 100 can further include a second bushing 82 and a third bushing 83, the second bushing 82 is fixedly connected with the auxiliary frame 40, the second bushing 82 is formed with a first connecting hole penetrating through the second bushing 82 in the front-rear direction, and the other end of the second branch arm 22 is inserted into the first connecting hole and connected with the second bushing 82; the other end of the third branch arm 23 is formed with a second connecting hole penetrating through the third branch arm 23 in the front-rear direction, and the third bushing 83 is arranged in the second connecting hole.

[0063] The second arm 22 and the third arm 23 are connected with the auxiliary frame 40 through the second bushing 82 and the third bushing 83 respectively, so that the swing arm 20 and the auxiliary frame 40 can be fixed and connected, and the second bushing 82, the third bushing 83 and the first bushing 81 can cooperate to achieve good buffering and vibration isolation, so that the auxiliary frame 40 can be kept stable during vehicle driving, and the driver can have a good driving experience.

[0064] In some embodiments of the utility model, as shown in Figure 4 As shown in the drawings, the leaf spring 30 can include: a leaf spring body 31 extending in the left-right direction, a first connecting portion 311 formed at both ends of the leaf spring body 31, the leaf spring body 31 formed with two protruding sections 313 arranged at intervals, the protruding section 313 is formed by a part of the leaf spring body 31 protruding upward from bottom, and at least part of the protruding section 313 is formed as a second connecting portion 3131.

[0065] In the embodiment, the two ends of the leaf spring body 31 are provided with the first connecting portion 311, the leaf spring body 31 forms two protruding sections 313 connected with the auxiliary frame 40, when the leaf spring 30 is assembled with the vehicle, the two first connecting portions 311 of the leaf spring 30 are connected with the swing arm 20 respectively, and the second connecting portions 3131 formed by the two protruding sections 313 are connected with the auxiliary frame 40 respectively, so that when the vehicle is running and jolt occurs, the leaf spring 30 can buffer the impact from the road through the bending deformation in the up-down direction, reduce the vibration of the auxiliary frame 40, and make the driver more comfortable when riding the vehicle.

[0066] In the embodiment, the two protruding sections 313 are formed on the leaf spring body 31, and the protruding sections 313 are located between the first connecting portions 311 at both ends of the leaf spring 30, so that the protruding sections 313 can effectively strengthen the structure of the leaf spring 30, and the structural strength of the leaf spring 30 is improved to a certain extent, so that the first connecting portion 311 of the leaf spring 30 can have a smaller deformation displacement in the up-down direction under the same maximum impact force, in other words, the displacement of the first connecting portion 311 of the leaf spring 30 in the up-down direction is below the limit working condition under the same maximum impact force, so that the fatigue damage of the leaf spring 30 is effectively reduced, the leaf spring 30 can stably perform buffering operation, and the service life of the leaf spring 30 is longer.

[0067] In an embodiment of the utility model, as shown in Figure 2 As shown in the drawings, the leaf spring 30 can have a first surface abutting and connected with the auxiliary frame 40, the distance between the first surface and the center line of the first connecting portion 311 in the up-down direction is a first distance, and the first distance is greater than the maximum deflection of the leaf spring 30 at the position of the first connecting portion 311.

[0068] The maximum deflection refers to the displacement of the first connecting portion 311 in the up-down direction under the working condition of the maximum up-jump height of the suspension after the leaf spring 30 is assembled with the lower swing arm 20 and the auxiliary frame 40. In the embodiment, the first spacing is set to be greater than the maximum deflection of the leaf spring 30 at the position of the first connecting portion 311, that is, the first connecting portion 311 is always below the first surface when moving upward in the up-down direction, so that the leaf spring body 31 is less likely to be damaged and broken. Specifically, the leaf spring 30 is stretched and deformed when the first connecting portion 311 moves upward relative to the position of the first surface, and when the first connecting portion 311 moves upward too much, the tensile force on the leaf spring body 31 exceeds the range of the tensile deformation, causing the leaf spring 30 to be plastically deformed, thereby intensifying the fatigue damage of the leaf spring 30 during long-term use and reducing the service life of the leaf spring 30.

[0069] In the embodiment, by setting the first spacing to be greater than the maximum deflection of the leaf spring 30 at the position of the first connecting portion 311, the leaf spring 30 can be stably within the good tensile deformation range during use, thereby effectively delaying the fatigue damage of the leaf spring 30 and improving the service life of the leaf spring 30. For example Figure 2 As shown in the figure, h represents the first spacing, and the first spacing h is greater than the maximum deflection of the leaf spring 30 at the position of the first connecting portion 311.

[0070] In an embodiment of the utility model, as shown in the figure, Figure 3 The leaf spring body 31 can include a body segment 312, the body segment 312 being a left-right extending flat plate, two protruding segments 313 being connected to the left and right ends of the body segment 312 respectively, and two first connecting portions 311 being connected to one end of the two protruding segments 313 away from the body segment 312 respectively.

[0071] In the embodiment, the body segment 312 is a left-right extending flat plate, which is simple in structure and convenient to manufacture, and occupies less space in the up-down direction, so that the leaf spring 30 can be conveniently arranged between the auxiliary frame 40 and the lower swing arm 20. In the embodiment, the two protruding segments 313 are connected to the left and right ends of the body segment 312 respectively, and the first connecting portions 311 are connected to the protruding segments 313 respectively, so that the two first connecting portions 311 and the protruding segments 313 on the leaf spring 30 can form a symmetrical structure in the left-right direction, thereby making the leaf spring 30 more stable when connected with the auxiliary frame 40 and the lower swing arm 20, and the leaf spring 30 can stably perform the buffering and damping operation.

[0072] In an embodiment of the utility model, as shown in the figure, Figure 4As shown, the suspension assembly 100 may further include: a connecting bracket 50, which may be in the shape of a plate extending forward and backward, and is arranged on the lower side of the raised section 313, with the front and rear ends of the connecting bracket 50 extending upward and connected to the subframe 40 via fasteners.

[0073] In this embodiment, the leaf spring 30 is connected to the sub-frame 40 via the connecting bracket 50, which has a simple structure and is easy to assemble. For example, the connecting bracket 50 can be fixedly connected to the sub-frame 40 by bolts.

[0074] In one embodiment of the present invention, reference Figure 5 As shown, the raised section 313 may include: a first plate portion, a second plate portion and a third plate portion. In the left-right direction, the first plate portion and the second plate portion extend toward each other and obliquely upward. The lower end of the first plate portion is connected to the main section 312, the lower end of the second plate portion is connected to the first connecting portion 311, and the third plate portion is connected between the upper ends of the first plate portion and the second plate portion, and the third plate portion is used to connect to the sub-frame 40.

[0075] In this embodiment, the raised section 313 is configured as a first plate portion, a second plate portion, and a third plate portion. The first plate portion cooperates with the second plate portion to form a raised structure extending obliquely upward. The first plate portion cooperates with the second plate portion and the third plate portion to form the raised section 313 of the leaf spring 30. This provides a simple structure and facilitates fabrication. In this embodiment, the third plate portion is connected between the upper ends of the first and second plate portions and is also connected to the subframe 40, making assembly of the leaf spring 30 and the subframe 40 more convenient.

[0076] In some examples of the present invention, reference Figure 2 and Figure 5 As shown, the third plate portion can be a flat plate extending left and right. This allows the third plate portion to better cooperate with the auxiliary frame 40 for connection and fixation. The third plate portion is set as a flat plate, which has a simple structure and is easy to process.

[0077] In some examples of the present invention, reference Figure 2 and Figure 5 As shown, the width and / or thickness of the second plate portion may gradually decrease in a direction from the third plate portion toward the first connection portion 311 .

[0078] In this embodiment, the width of the second plate portion may gradually decrease in the direction from the third plate portion toward the first connection portion 311, the thickness of the second plate portion may gradually decrease in the direction from the third plate portion toward the first connection portion 311, or both the width and thickness of the second plate portion may gradually decrease in the direction from the third plate portion toward the first connection portion 311. Here, the direction from the third plate portion toward the first connection portion 311 refers to the direction from the third plate portion toward the first connection portion 311 connected to the raised section 313 where the third plate portion is located in the left-right direction.

[0079] The width and / or thickness of the second plate portion is gradually reduced towards the first connecting portion 311, so that the plate spring 30 has a small volume at both ends in the left-right direction, thereby facilitating the connection of the plate spring 30 with the lower swing arm 20, reducing the interference between the first connecting portion 311 and other structural components when the lower swing arm swings, and making the plate spring 30 operate more stably during use.

[0080] In some examples of the present application, as shown in Figure 2 and Figure 5 The third plate portion can be connected with the first plate portion and the second plate portion by an arc, and the convex section 313 can be connected with the main section 312 and the first connecting portion 311 by an arc.

[0081] In the present embodiment, the third plate portion is connected with the first plate portion and the second plate portion by an arc, and the convex section 313 is connected with the main section 312 and the first connecting portion 311 by an arc, thereby reducing the stress concentration of the plate spring 30 during stretching deformation, allowing the plate spring 30 to deform more stably and well, reducing fatigue damage of the plate spring 30 during use, and prolonging the service life of the plate spring 30.

[0082] In some examples of the present application, as shown in Figures 2-5 The plate spring 30 can further include a buffer 32, the buffer 32 being arranged on the convex section 313, the upper surface of the buffer 32 abutting against the auxiliary frame 40, and the lower surface of the buffer 32 abutting against the connecting bracket 50.

[0083] In the present embodiment, the buffer 32 is arranged on the convex section 313, and the upper surface of the buffer 32 abuts against the auxiliary frame 40, and the lower surface of the buffer 32 abuts against the connecting bracket 50, so that the buffer 32 is arranged between the connecting bracket and the plate spring 30, and between the plate spring 30 and the auxiliary frame 40. The buffer 32 can well alleviate the impact of the plate spring 30 on the auxiliary frame 40 during deformation, making the connection and fixation of the plate spring 30 and the auxiliary frame 40 more stable, and avoiding large extrusion and friction when the plate spring 30 is directly connected with the auxiliary frame 40, so that the plate spring 30 and the auxiliary frame 40 can be used stably and well in the vehicle.

[0084] In one example of the present application, as shown in Figure 2 and Figure 3 The buffer 32 can include a sleeve portion 321, a first abutting portion 322, and a first elastic connecting portion 323, the sleeve portion 321 being sleeved on the third plate portion, the first abutting portion 322 being arranged on the upper side of the sleeve portion 321, the first abutting portion 322 being adapted to abut against and connect with the auxiliary frame 40, and the first elastic connecting portion 323 being connected between the sleeve portion 321 and the first abutting portion 322.

[0085] When the leaf spring 30 is deformed and buffered, the sleeve portion 321 can deflect or shift in the up and down directions and left and right directions following the deformation of the leaf spring 30. The first elastic connecting portion 323 can adapt to the change in the relative position of the sleeve portion 321 and the sub-frame 40 through elastic deformation and be reliably connected to the sleeve portion 321, so that the first abutting portion 322 can be reliably abutted and fixed to the sub-frame 40, thereby allowing the leaf spring 30 to always be stably connected to the sub-frame 40 during use.

[0086] In some specific embodiments of the present invention, Figure 3 As shown, the buffer member 32 may further include: a second abutting portion 324 and a second elastic connecting portion 325, the second abutting portion 324 being arranged on the lower side of the sleeve portion 321, the second elastic connecting portion 325 being connected between the sleeve portion 321 and the second abutting portion 324, and the second abutting portion 324 being suitable for abutting and connecting with a connecting bracket 50 for connecting the raised section 313 and the sub-frame 40.

[0087] In this embodiment, a second elastic connection portion 325 and a second abutment portion 324 are provided between the leaf spring 30 and the connecting bracket 50. This allows the second elastic connection portion 325 to adapt to changes in the relative position of the sleeve portion 321 and the connecting bracket 50 through elastic deformation and reliably connect to the sleeve portion 321 when the leaf spring 30 is deformed and buffered. This allows the second abutment portion 324 to stably and reliably abut and securely abut the connecting bracket 50, thereby allowing the connecting bracket 50 to more stably connect and secure the leaf spring 30 to the subframe 40. The second elastic connection portion 325 and the second abutment portion 324 can reduce friction and collision caused by direct contact between the connecting bracket 50 and the leaf spring 30, thereby ensuring that the connecting bracket 50 and the leaf spring 30 can be used stably and effectively in the vehicle.

[0088] In a specific embodiment of the present invention, referring to Figure 2 As shown, in the horizontal projection plane, the projection of the first elastic connecting portion 323 may be located within the projection of the first abutting portion 322 , and the projection of the second elastic connecting portion 325 may be located within the projection of the second abutting portion 324 .

[0089] In the embodiment, the projection of the first elastic connecting part 323 in the horizontal projection plane is located in the projection of the first abutting part 322, the first elastic connecting part 323 has a small connecting area when connected with the first abutting part 322, the first abutting part 322 can be less affected by the first elastic connecting part 323 when the first elastic connecting part 323 deforms, so that the first abutting part 322 can maintain a good structural state and abut and connect with the auxiliary frame 40, the first elastic connecting part 323 can have a large space in the front-rear direction and the left-right direction to deform stably and well, so that the relative position change between the sleeve body part 321 and the first abutting part 322 can be better adapted to a certain extent, the buffer 32 can better buffer the impact of the deformation of the leaf spring 30, and the leaf spring 30 can be more stable when connected with the auxiliary frame 40.

[0090] The projection of the second elastic connecting part 325 is located in the projection of the second abutting part 324, the second elastic connecting part 325 has a small connecting area when connected with the second abutting part 324, the second abutting part 324 can be less affected by the second elastic connecting part 325 when the second elastic connecting part 325 deforms, so that the second abutting part 324 can maintain a good structural state and abut and connect with the connecting support 50, the second elastic connecting part 325 can have a large space in the front-rear direction and the left-right direction to deform stably and well, so that the relative position change between the sleeve body part 321 and the second abutting part 324 can be better adapted to a certain extent, the buffer 32 can better buffer the impact of the deformation of the leaf spring 30, and the leaf spring 30 can be more stable when connected with the connecting support 50.

[0091] In one specific example of the utility model, referring to Figure 2 and Figure 3 It is shown that the side surface of the first abutting part 322 facing the auxiliary frame 40 and / or the side surface of the second abutting part 324 away from the leaf spring body 31 can be formed with a positioning protrusion.

[0092] In the embodiment, the positioning protrusion is formed on the side surface of the first abutting part 322 facing the auxiliary frame 40 and / or the side surface of the second abutting part 324 away from the leaf spring body 31, so that when the leaf spring 30 and the auxiliary frame 40 are assembled and fixed through the connecting support 50, the buffer 32 can be well positioned and assembled with the auxiliary frame 40 and / or the connecting support 50, so that the buffer 32 can be conveniently positioned and assembled with the auxiliary frame 40 and the leaf spring 30, and the assembly is easy, and after the buffer 32 is assembled with the leaf spring 30 and the auxiliary frame 40, the relative slipping of the buffer 32 and the auxiliary frame 40 and / or the connecting support 50 can be well avoided, so that the buffer 32 can be more stably and reliably connected and fixed with the auxiliary frame 40 and / or the connecting support 50.

[0093] For example, a positioning protrusion may be formed on a side surface of the first abutting portion 322 facing the sub-frame 40, a positioning protrusion may be formed on a side surface of the second abutting portion 324 facing away from the leaf spring body 31, or both a side surface of the first abutting portion 322 facing the sub-frame 40 and a side surface of the second abutting portion 324 facing away from the leaf spring body 31 may be formed with positioning protrusions.

[0094] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the suspension assembly 100 may further include a steering knuckle 60 connected between a side of the lower arm 20 away from the leaf spring 30 and the wheel 10 .

[0095] In this embodiment, the steering knuckle 60 is provided to meet the requirements of vehicle steering operation, and has a simple structure and is easy to use.

[0096] Reference below Figures 1-5 A vehicle according to an embodiment of the second aspect of the present invention is described.

[0097] like Figures 1-5 As shown, a vehicle according to an embodiment of the present invention includes a suspension assembly 100 according to an embodiment of the first aspect of the present invention, wherein the leaf spring 30 extends left and right, and the number of the first connecting parts 311 is two, and the two first connecting parts 311 are respectively formed at the left and right ends of the leaf spring 30, and the two first connecting parts 311 are respectively connected to the lower control arms 20 on the left and right sides of the vehicle, and the number of the second connecting parts 3131 is two, and the two second connecting parts 3131 are arranged at intervals between the two first connecting parts 311, and the two second connecting parts 3131 are respectively connected to the left and right sides of the sub-frame 40 of the vehicle.

[0098] Other structures and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0099] According to the vehicle of the embodiment of the present utility model, by setting the suspension assembly 100 of the above-mentioned first embodiment, a first connection part 311 connected to the lower arm 20 and a second connection part 3131 connected to the subframe 40 are set on the leaf spring 30, and the distance between the first center line of the first connection part 311 and the second center line of the second connection part 3131 in the left and right directions is formed as a first distance, and the distance between the first center line and the third center line of the wheel 10 in the left and right directions is formed as a second distance. The first distance is smaller than the second distance, so that the leaf spring 30 can have a smaller dynamic space occupancy in the up and down directions, so that other components in the suspension assembly 100 can have a larger layout space, making the layout and assembly of the suspension assembly 100 in the vehicle more convenient.

[0100] The following will refer to Figures 1-5A vehicle according to a specific embodiment of the present invention is described.

[0101] like Figures 1-5 As shown, the vehicle includes a body and a suspension assembly 100. The suspension assembly 100 can be arranged at the front wheel position of the vehicle, or at the rear wheel position of the vehicle. This embodiment is described by taking the suspension assembly 100 arranged at the front wheel position of the vehicle as an example.

[0102] The suspension assembly 100 includes a wheel 10 , a subframe 40 , a lower control arm 20 , a connecting bracket 50 , a steering knuckle 60 , a shock absorber 70 and a leaf spring 30 . The subframe 40 is fixed to the bottom of the vehicle body, and there are two steering knuckles 60. The two steering knuckles 60 are respectively connected to the left and right wheels 10 of the vehicle, and the steering knuckles 60 are connected to the lower control arm 20; the lower control arm 20 is an integral part, and the lower control arm 20 is formed with a first support arm 21, a second support arm 22 and a third support arm 23. The first support arm 21 is connected to the leaf spring 30 through a first bushing 81, the second support arm 22 is rotatably connected to the subframe 40 through a second bushing 82, and the third support arm 23 is rotatably connected to the subframe 40 through a third bushing 83. The position where the second support arm 22 is connected to the subframe 40 is located in front of the position where the third support arm 23 is connected to the subframe 40; the shock absorber 70 is arranged vertically and the upper end extends obliquely toward the subframe 40 in the left and right direction. The upper end of the shock absorber 70 is connected to the vehicle body and the lower end is connected and fixed to the lower control arm 20.

[0103] The leaf spring 30 includes a leaf spring body 31 and a buffer member 32. The leaf spring body 31 extends left and right and has through holes formed at both ends. The through holes pass through the leaf spring body 31 in the front and back directions, and the first bushing 81 is arranged in the through holes; the leaf spring body 31 is partially raised to form two raised sections 313 arranged at intervals along the left and right directions. The raised sections 313 include a first plate portion, a second plate portion and a third plate portion. The first plate portion and the second plate portion are arranged facing each other and extend upward at an angle. The upper end of the first plate portion and the upper end of the second plate portion are connected to the left and right ends of the third plate portion, thereby forming the raised sections 313 of the leaf spring body 31.

[0104] The buffer 32 is a rubber piece, and the buffer 32 comprises a sleeve part 321, a first elastic connecting part 323, a first abutting part 322, a second elastic connecting part 325 and a second abutting part 324, the sleeve part 321 is sleeved on the third plate segment, the first elastic connecting part 323 and the second elastic connecting part 325 are respectively arranged on the upper and lower sides of the leaf spring body 31 and are connected with the sleeve part 321, and the first abutting part 322 and the second abutting part 324 are respectively arranged on the upper and lower sides of the leaf spring body 31 and are respectively connected with the first elastic connecting part 323 and the second elastic connecting part 325. The side surface of the first abutting part 322 facing the auxiliary frame 40 is formed with positioning protrusions, the positioning protrusions are three, and the positioning protrusions can be positioning columns and positioning blocks. The side surface of the second abutting part 324 facing the connecting support 50 is also formed with the positioning protrusions.

[0105] The connecting support 50 extends forward and rearward and abuts against the lower side surface of the buffer 32, the connecting support 50 extends upward at the front and rear ends and is formed with a connecting flange for cooperation and fixation with the auxiliary frame 40, and the connecting support 50 cooperates with the auxiliary frame 40 to clamp and fix the buffer 32 and the third plate part, so that the suspension assembly 100 is relatively compact in structure.

[0106] According to the vehicle of the embodiment of the utility model, the first connecting part 311 connected with the lower swing arm 20 and the second connecting part 3131 connected with the auxiliary frame 40 are arranged on the leaf spring 30, the distance between the first center line of the first connecting part 311 and the second center line of the second connecting part 3131 in the left-right direction is formed as a first distance, the distance between the first center line and the third center line of the wheel 10 in the left-right direction is formed as a second distance, the first distance is smaller than the second distance, the leaf spring 30 can have a smaller dynamic space occupation in the up-down direction, so that other parts in the suspension assembly 100 can have a larger arrangement space, and the arrangement and assembly of the suspension assembly 100 in the vehicle are more convenient.

[0107] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0108] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or order of magnitude. Thus, features with "first", "second", "third" designations can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

[0109] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0110] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0111] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A suspension assembly, characterized in that: include: wheel; subframe; a lower arm, one end of the lower arm being connected to the wheel and the other end being connected to the subframe; a leaf spring, the leaf spring being arranged on the lower side of the subframe, and being provided with a first connecting portion for connecting to the lower swing arm and a second connecting portion for connecting to the subframe in the length direction of the leaf spring; In the left-right direction, the distance from the first connection portion to the wheel center is a first distance, the distance from the first connection portion to the second connection portion is a second distance, and the first distance is smaller than the second distance.

2. The suspension assembly according to claim 1, characterized in that: The center line of the first connecting part in the left-right direction is the first center line, the center line of the second connecting part in the left-right direction is the second center line, the center line of the wheel in the left-right direction is the third center line, the first distance is the distance between the first center line and the second center line, and the second distance is the distance between the first center line and the third center line.

3. The suspension assembly according to claim 1, characterized in that: A ratio of the first distance to the second distance is greater than or equal to 0.5 and less than 1.

4. The suspension assembly according to claim 1, characterized in that: Also includes: A shock absorber, wherein the lower end of the shock absorber is connected to the lower swing arm and the upper end is used to connect to the vehicle body.

5. The suspension assembly according to claim 1, characterized in that: The lower swing arm comprises: a first supporting arm, the first supporting arm extending leftward and rightward and connected to the first connecting portion; a second arm, one end of the second arm being connected to one end of the first arm toward the sub-frame, the other end of the second arm being inclinedly extended forward toward the sub-frame, and the other end of the second arm being rotatably connected to the sub-frame; a third arm, one end of the third arm being connected to one end of the first arm toward the sub-frame, the other end of the third arm being obliquely extended backward toward the sub-frame, and the other end of the third arm being rotatably connected to the sub-frame, Wherein, one of the other end of the second arm and the other end of the third arm is located on the upper side of the sub-frame, and the other is located on the lower side of the sub-frame.

6. The suspension assembly according to claim 1, characterized in that: The leaf spring comprises: A leaf spring body extends in the left-right direction, the first connecting portion is formed at both ends of the leaf spring body, the leaf spring body is formed with two raised sections arranged at intervals, the raised sections are formed by a part of the leaf spring body raised from bottom to top, and at least part of the raised sections forms the second connecting portion.

7. The suspension assembly according to claim 6, characterized in that: The leaf spring has a first surface connected to the subframe, the distance between the first surface and the center line of the first connection portion in the vertical direction is a first spacing, and the first spacing is greater than the maximum deflection of the leaf spring at the first connection portion.

8. The suspension assembly according to claim 6, characterized in that: The leaf spring body includes: a main body section, which is a flat plate extending left and right, the two raised sections are respectively connected to the left and right ends of the main body section, and the two first connecting parts are respectively connected to the ends of the two raised sections away from the main body section.

9. The suspension assembly according to claim 6, characterized in that: Also includes: The connecting bracket is in the shape of a plate extending forward and backward. The connecting bracket is arranged on the lower side of the raised section. The front and rear ends of the connecting bracket extend upward and are connected to the subframe through fasteners.

10. The suspension assembly according to claim 9, characterized in that: The leaf spring further includes a buffer member, which is provided on the raised section, wherein the upper surface of the buffer member abuts against the auxiliary frame, and the lower surface of the buffer member abuts against the connecting bracket.

11. The suspension assembly according to claim 1, characterized in that: The first connecting portion is formed with a through hole, a first bushing is embedded in the through hole, and the first connecting portion is rotatably connected to the lower swing arm through the first bushing.

12. The suspension assembly according to claim 1, characterized in that Also includes: A steering knuckle is connected between a side of the lower swing arm away from the leaf spring and the wheel.

13. A vehicle, characterized in that: It includes a suspension assembly according to any one of claims 1 to 12, wherein the leaf spring extends left and right, the number of the first connecting parts is two, the two first connecting parts are formed at the left and right ends of the leaf spring respectively, the two first connecting parts are respectively connected to the lower control arms on the left and right sides of the vehicle, the number of the second connecting parts is two, the two second connecting parts are arranged at intervals between the two first connecting parts, and the two second connecting parts are respectively connected to the left and right sides of the subframe of the vehicle.

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