Suspension structure and vehicle

Abstract

The utility model belongs to the technical field of vehicle suspensions, and particularly relates to a suspension structure and a vehicle, the suspension structure comprises a damping assembly, an actuator, a transmission assembly, a lower swing arm and a steering knuckle; the steering knuckle is rotationally connected with the lower swing arm, and the vibration reduction assembly is installed on the steering knuckle. The transmission assembly is connected between the actuator and the lower swing arm, and the actuator is used for driving the lower swing arm and the steering knuckle to move through the transmission assembly. According to the suspension structure, a stabilizer bar does not need to be arranged, the number of parts of the suspension structure is small, and therefore the occupied space of the suspension structure is reduced, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle suspension, in particular to a suspension structure and a vehicle. Background Art

[0002] McPherson suspension has good response and handling performance and is widely used in various models. However, its main disadvantage is that the vehicle body stability is slightly poor, including braking nod and roll control, and a lateral stabilizer bar is required to suppress the body roll, and the suspension occupies a large installation space. Utility Model Content

[0003] The utility model aims at the technical problems in the prior art such as the large space occupied by the McPherson suspension, and proposes a suspension structure and a vehicle.

[0004] To solve the above problems, an embodiment of the utility model provides a suspension structure, including a shock absorbing assembly, an actuator, a transmission assembly, a lower swing arm and a steering knuckle; the steering knuckle is rotatably connected to the lower swing arm, and the shock absorbing assembly is mounted on the steering knuckle; the transmission assembly is connected between the actuator and the lower swing arm, and the actuator is used to drive the lower swing arm and the steering knuckle to move through the transmission assembly.

[0005] Optionally, the transmission assembly includes a rocker arm and a pull rod connected to the rocker arm; one end of the rocker arm away from the pull rod is rotatably connected to the output end of the actuator, and one end of the pull rod away from the rocker arm is rotatably connected to the lower swing arm.

[0006] Optionally, the lower swing arm includes a first support arm, a bending arm and a second support arm, and the first support arm and the second support arm are respectively connected to opposite ends of the bending arm;

[0007] The suspension structure also includes a subframe, the actuator is mounted on the subframe, the first support arm and the bending arm are both rotatably connected to the subframe, and the second support arm is both rotatably connected to the pull rod and the steering knuckle.

[0008] Optionally, the suspension structure also includes a first bushing, a second bushing, a ball pin and a rotating member, the first support arm is rotationally connected to the subframe through the first bushing, the bending arm is rotationally connected to the subframe through the second bushing, the second support arm is rotationally connected to the steering knuckle through the ball pin, and the second support arm is rotationally connected to the pull rod through the rotating member.

[0009] Optionally, the rocker arm and the pull rod are arranged at a first preset angle; the first preset angle is greater than or equal to 80 degrees and less than or equal to 100 degrees.

[0010] Optionally, the actuator includes a driving member and a reducer, the driving member is connected to an input end of the reducer, and an output end of the reducer is rotationally connected to the rocker arm.

[0011] Optionally, the suspension structure further includes a drive shaft, which is rotatably connected to the steering knuckle; the actuator and the lower swing arm are respectively located on opposite sides of the drive shaft.

[0012] Optionally, the suspension structure further comprises a steering tie rod, one end of which is rotationally connected to the steering knuckle, and the other end of which is rotationally connected to the vehicle steering gear.

[0013] Optionally, the vibration reduction assembly includes a vibration reducer and an elastic member sleeved on the vibration reducer, and the vibration reducer is mounted on the steering knuckle.

[0014] Another embodiment of the utility model further provides a vehicle, comprising the above-mentioned suspension structure.

[0015] In the utility model, the steering knuckle is rotatably connected with the lower swing arm, and the shock absorbing assembly is installed on the steering knuckle; the transmission assembly is connected between the actuator and the lower swing arm, and the actuator is used to drive the lower swing arm and the steering knuckle to move through the transmission assembly; the up and down movement of the steering knuckle can change the elastic force, the action force, etc. of the shock absorbing assembly, and the suspension structure can be adjusted according to different road conditions, and has good response performance and control performance; and the transmission assembly can drive the lower swing arm to move up and down, and the action force is directly transmitted to the lower swing arm, and the transmission efficiency of the action force is high, so that the relative movement between the vehicle body and the wheel can be accurately controlled. In addition, the suspension structure does not need to be provided with a stabilizer bar, and has fewer parts, thereby reducing the occupied space and manufacturing cost of the suspension structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 A structural schematic diagram of a suspension structure provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a suspension structure provided by an embodiment of the utility model;

[0019] Figure 3 A partial structural schematic diagram of a suspension structure provided in one embodiment of the utility model.

[0020] The reference numerals in the specification are as follows:

[0021] 1. Vibration reduction assembly; 11. Shock absorber; 12. Elastic member; 2. Actuator; 3. Transmission assembly; 31. Rocker arm; 32. Pull rod; 4. Lower arm; 41. First arm; 42. Bending arm; 43. Second arm; 44. First bushing; 45. Second bushing; 5. Steering knuckle; 6. Drive shaft; 7. Steering tie rod; 8. Subframe. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the utility model and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations of the utility model.

[0024] In the present invention, the X direction is the direction along the length (front and back) of the vehicle, the Y direction is the direction along the width (left and right) of the vehicle, and the Z direction is the vertical direction along the height of the vehicle.

[0025] like Figures 1 to 3 As shown, a suspension structure provided by the first embodiment of the utility model includes a damping assembly 1, an actuator 2, a transmission assembly 3, a lower swing arm 4 and a steering knuckle 5; the steering knuckle 5 is rotatably connected to the lower swing arm 4, and the damping assembly 1 is mounted on the steering knuckle 5; the transmission assembly 3 is connected between the actuator 2 and the lower swing arm 4, and the actuator 2 is used to drive the lower swing arm 4 and the steering knuckle 5 to move through the transmission assembly 3. It can be understood that the actuator 2 includes but is not limited to a motor, etc.; the transmission assembly 3 can convert the rotation of the actuator 2 into the up and down movement of the lower swing arm 4. Preferably, the actuator 2 includes a driving member and a reducer, the output end of the driving member is connected to the input end of the reducer, and the output end of the reducer is rotatably connected to the lower swing arm 4; wherein the reducer can be a single-stage reducer, a multi-stage reducer, a planetary gear reducer, a harmonic gear reducer, etc., or a combination thereof.

[0026] In a specific embodiment, the steering knuckle 5 is an important component connecting the suspension system and the wheel assembly and is forged.

[0027] In the utility model, the steering knuckle 5 is rotatably connected with the lower arm 4, and the shock absorbing assembly 1 is installed on the steering knuckle 5; the transmission assembly 3 is connected between the actuator 2 and the lower arm 4, and the actuator 2 is used to drive the lower arm 4 and the steering knuckle 5 to move through the transmission assembly 3; the up and down movement of the steering knuckle 5 can change the elastic force, the action force, etc. of the shock absorbing assembly 1, and the suspension structure can be adjusted according to different road conditions, and has good response performance and control performance; and the transmission assembly 3 can drive the lower arm 4 to move up and down, and the action force is directly transmitted to the lower arm 4, and the transmission efficiency of the action force is high, so that the relative movement between the vehicle body and the wheel can be accurately controlled. In addition, the suspension structure does not need to be provided with a stabilizer bar, and has fewer parts, thereby reducing the occupied space and manufacturing cost of the suspension structure.

[0028] In one embodiment, if Figures 1 to 3 As shown, the transmission assembly 3 includes a rocker arm 31 and a pull rod 32 connected to the rocker arm 31; one end of the rocker arm 31 away from the pull rod 32 is rotatably connected to the output end of the actuator 2, and one end of the pull rod 32 away from the rocker arm 31 is rotatably connected to the lower swing arm 4. It can be understood that the rocker arm 31 and the pull rod 32 constitute a connecting rod mechanism, and both the rocker arm 31 and the pull rod 32 can adopt a two-force rod structure, which has a simple shape and structure.

[0029] Specifically, the actuator 2 drives the rocker arm 31 to rotate, and the rocker arm 31 drives the lower swing arm 4 and the steering knuckle 5 to move up and down through the pull rod 32. In this embodiment, the transmission assembly 3 has a simple structure, low manufacturing cost and compact structure.

[0030] In one embodiment, if Figure 2 and Figure 3 As shown, the lower swing arm 4 includes a first support arm 41, a bending arm 42 and a second support arm 43, and the first support arm 41 and the second support arm 43 are respectively connected to the opposite ends of the bending arm 42; it can be understood that the angle between the first support arm 41 and the second support arm 43 can be set according to actual needs, and the first support arm 41, the bending arm 42 and the second support arm 43 are an integrally formed part.

[0031] The suspension structure further includes a subframe 8, the actuator 2 is mounted on the subframe 8, the first arm 41 and the bending arm 42 are both rotatably connected to the subframe 8, and the second arm 43 is rotatably connected to the tie rod 32 and the steering knuckle 5. It can be understood that the first arm 41 can be rotatably connected to the subframe 8 through a ball pin, a bushing, etc., the second arm 43 can also be rotatably connected to the tie rod 32 through a ball pin, a bushing, etc., and the second arm 43 can also be rotatably connected to the steering knuckle 5 through a ball pin, a bushing, etc.

[0032] In this embodiment, the lower swing arm 4 occupies a small space, further improving the compactness of the suspension structure.

[0033] In one embodiment, if Figure 3 As shown, the suspension structure further includes a first bushing 44, a second bushing 45, a ball pin and a rotating member. The first arm 41 is rotatably connected to the sub-frame 8 through the first bushing 44, the bending arm 42 is rotatably connected to the sub-frame 8 through the second bushing 45, the second arm 43 is rotatably connected to the steering knuckle 5 through the ball pin, and the second arm 43 is rotatably connected to the tie rod 32 through the rotating member. It can be understood that the first bushing 44 can be a hydraulic bushing or a rubber bushing, and the first bushing 44 can be arranged along the X direction or the Z direction; the second bushing 45 is a rubber bushing, which has a high radial stiffness; the rotating member includes but is not limited to a bushing, a ball pin, etc.

[0034] In this embodiment, the first bushing 44 can reduce the vibration between the lower arm 4 and the subframe 8, thereby improving the NVH performance of the entire vehicle; the second bushing 45 can transmit lateral force between the subframe 8 and the lower arm 4, thereby ensuring the stability of the suspension structure.

[0035] In one embodiment, the rocker arm 31 and the pull rod 32 are arranged at a first preset angle; the first preset angle is greater than or equal to 80 degrees and less than or equal to 100 degrees (for example, the first angle is equal to 85 degrees, 95 degrees, etc.); that is, the angle between the first connecting line and the second connecting line is the first preset angle, the first connecting line is the connecting line between the first connecting part and the second connecting part, the second connecting line is the connecting line between the second connecting part and the third connecting part, the first connecting part is the connecting part between the rocker arm 31 and the actuator 2, the second connecting part is the connecting part between the rocker arm 31 and the pull rod 32, and the third connecting part is the connecting part between the pull rod 32 and the lower swing arm 4. Preferably, the first preset angle is equal to 90 degrees. It can be understood that the rocker arm 31 is approximately arranged along the X direction, and the pull rod 32 is approximately arranged along the Z direction. In this embodiment, the angle between the rocker arm 31 and the pull rod 32 is approximately equal to 90 degrees, so that the suspension structure fully utilizes the X-direction and Z-direction space within the suspension, further improving the compactness of the suspension structure.

[0036] In one embodiment, if Figure 1 and Figure 2 As shown, the suspension structure further includes a drive shaft 6, which is rotatably connected to the steering knuckle 5; the actuator 2 and the lower swing arm 4 are respectively located on opposite sides of the drive shaft 6. It can be understood that the end of the drive shaft 6 away from the steering knuckle 5 can be connected to a drive motor, etc., and the drive shaft 6 can drive the wheel to rotate through the steering knuckle 5; the drive shaft 6 is located between the lower swing arm 4 and the actuator 2. In this embodiment, the actuator 2, the drive shaft 6 and the lower swing arm 4 are arranged at intervals along the X direction, so that the suspension structure fully utilizes the X-direction space and further improves the compactness of the suspension structure.

[0037] In one embodiment, if Figure 1 and Figure 2 As shown, the suspension structure further includes a steering tie rod 7, one end of which is rotationally connected to the steering knuckle 5 (rotationally connected via a pin sleeve, a ball pin, etc.), and the other end of which is rotationally connected to the vehicle steering gear (rotationally connected via a pin sleeve, a ball pin, etc.). It can be understood that the vehicle steering gear drives the steering knuckle 5 to rotate through the steering tie rod 7, thereby realizing the function of wheel turning.

[0038] In one embodiment, if Figure 1As shown, the shock absorbing assembly 1 includes a shock absorber 11 and an elastic member 12 sleeved on the shock absorber 11, and the shock absorber 11 is installed on the steering knuckle 5. It can be understood that the elastic member 12 includes but is not limited to a spring, etc., and the end of the shock absorber 11 away from the steering knuckle 5 is connected to the vehicle body, and the upper end of the elastic member 12 is also connected to the vehicle body. In this embodiment, the elastic member 12 mainly plays a bearing role, and the shock absorber 11 mainly plays a vibration reduction role, which ensures the height of the vehicle body, and the stiffness of the suspension structure can be designed to be smaller, thereby improving the comfort of the vehicle.

[0039] Another embodiment of the utility model provides a vehicle, including the above-mentioned suspension structure. It should be noted that the vehicle has a suspension structure arranged at intervals on the left and right, and the two suspension structures can be independently moved and controlled, and the suspension structure has a large up and down bounce stroke, and can apply different control vehicles to different working conditions, and can control the movement of the vehicle body on the left and right at the same time, so that the vehicle body does not pitch when accelerating and decelerating; and when the two suspension structures are controlled in opposite directions on the left and right, the vehicle body can be turned without tilting, and the operation stability and comfort of different working conditions are achieved.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A suspension structure, characterized in that: It includes a vibration reduction assembly, an actuator, a transmission assembly, a lower swing arm and a steering knuckle; the steering knuckle is rotatably connected to the lower swing arm, and the vibration reduction assembly is installed on the steering knuckle; the transmission assembly is connected between the actuator and the lower swing arm, and the actuator is used to drive the lower swing arm and the steering knuckle to move through the transmission assembly.

2. The suspension structure according to claim 1, characterized in that: The transmission assembly includes a rocker arm and a pull rod connected to the rocker arm; one end of the rocker arm away from the pull rod is rotationally connected to the output end of the actuator, and one end of the pull rod away from the rocker arm is rotationally connected to the lower swing arm.

3. The suspension structure according to claim 2, characterized in that: The lower swing arm comprises a first support arm, a bending arm and a second support arm, wherein the first support arm and the second support arm are respectively connected to opposite ends of the bending arm; The suspension structure also includes a subframe, the actuator is mounted on the subframe, the first support arm and the bending arm are both rotatably connected to the subframe, and the second support arm is both rotatably connected to the pull rod and the steering knuckle.

4. The suspension structure according to claim 3, characterized in that: The suspension structure also includes a first bushing, a second bushing, a ball pin and a rotating member. The first support arm is rotationally connected to the subframe through the first bushing, the bending arm is rotationally connected to the subframe through the second bushing, the second support arm is rotationally connected to the steering knuckle through the ball pin, and the second support arm is rotationally connected to the pull rod through the rotating member.

5. The suspension structure according to claim 2, characterized in that: The rocker arm and the pull rod are arranged at a first preset angle; the first preset angle is greater than or equal to 80 degrees and less than or equal to 100 degrees.

6. The suspension structure according to claim 2, characterized in that: The actuator comprises a driving member and a reducer, wherein the driving member is connected to an input end of the reducer, and an output end of the reducer is rotationally connected to the rocker arm.

7. The suspension structure according to claim 1, characterized in that: The suspension structure also includes a drive shaft, which is rotatably connected to the steering knuckle; the actuator and the lower swing arm are respectively located on opposite sides of the drive shaft.

8. The suspension structure according to claim 1, characterized in that: The suspension structure further comprises a steering tie rod, one end of which is rotatably connected to the steering knuckle, and the other end of which is rotatably connected to the vehicle steering gear.

9. The suspension structure according to any one of claims 1 to 8, characterized in that: The vibration reduction assembly comprises a vibration reducer and an elastic member sleeved on the vibration reducer, and the vibration reducer is mounted on the steering knuckle.

10. A vehicle, characterized in that: Comprising the suspension structure according to any one of claims 1 to 9.

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