Vehicle suspension system and vehicle

Abstract

The utility model provides a vehicle suspension system and a vehicle. The vehicle suspension system comprises an upper swing arm, a lower swing arm, a vibration reduction assembly and a steering knuckle used for installing a hub motor. The steering knuckle is rotationally connected between the upper swing arm and the lower swing arm; one end of the upper swing arm away from the steering knuckle and one end of the lower swing arm away from the steering knuckle are connected with an auxiliary frame; the upper end of the vibration reduction assembly is connected with the auxiliary frame, and the lower end of the vibration reduction assembly is rotationally installed on the lower swing arm. The vertical height and the overall installation size of the vehicle suspension system are reduced, meanwhile, the unsprung mass is reduced, the overall weight and the impact load of the vehicle suspension system are reduced, and the stability of a vehicle during running is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle technical field, especially a kind of vehicle suspension system and vehicle. BACKGROUND

[0002] Vehicle suspension system is the important component between the subframe and wheel in vehicle and for ensuring the comfort of ride.In prior art, the lower end of shock absorber is arranged above the drive half shaft for transmitting driving force to wheel, and generally needs to extend the part of lower swing arm upwards, the design height is over the drive half shaft and the support for installing shock absorber, so it will result in the large unsprung mass of vehicle suspension system, large space occupation, and large vertical height, thereby affecting the stability of vehicle driving. SUMMARY

[0003] The utility model provides a kind of vehicle suspension system and vehicle to solve the technical problems, such as the stability of vehicle driving is affected by prior art vehicle suspension system.

[0004] In view of the above technical problems, the utility model embodiment provides a kind of vehicle suspension system, including upper swing arm, lower swing arm, damping component, damping support and knuckle for installing hub motor;

[0005] The knuckle is rotatably connected between the upper swing arm and the lower swing arm;The end of the upper swing arm away from the knuckle and the end of the lower swing arm away from the knuckle are both connected to the subframe;The upper end of the damping component is connected to the subframe, and the lower end of the damping component is rotatably mounted on the lower swing arm.

[0006] Optionally, the damping component includes damping body and damping support, the damping body is connected between the subframe and the damping support, and the end of the damping support away from the damping body is rotatably mounted on the lower swing arm.

[0007] Optionally, the lower swing arm is provided with a first mounting hole;The lower swing arm further includes a rotating shaft;The upper end of the damping support is fixedly connected to the lower end of the damping body, and the lower end of the damping support is rotatably mounted on the lower swing arm through the rotating shaft passing through the first mounting hole.

[0008] Optionally, the damping support includes a connecting clamp and first and second connecting rods connected to the lower end of the connecting clamp;

[0009] The connecting clamp is connected to the lower end of the damping body;The end of the first connecting rod away from the connecting clamp and the end of the second connecting rod away from the connecting clamp are respectively connected to the opposite ends of the rotating shaft.

[0010] Optionally, the lower swing arm further comprises a first bushing sleeved on the rotating shaft; the rotating shaft is rotatably installed in the first mounting hole through the first bushing.

[0011] Optionally, the lower swing arm is provided with a first ball pin, and the lower swing arm is rotatably connected with the knuckle through the first ball pin.

[0012] Optionally, the lower swing arm is provided with at least one second mounting hole at an end away from the knuckle; the lower swing arm further comprises at least one second bushing installed in the second mounting hole in one-to-one correspondence and used for connecting a subframe.

[0013] Optionally, the lower swing arm is provided with a mounting bracket; the vehicle suspension system further comprises a stabilizer bar; the stabilizer bar comprises a boom, a rod body and a second ball pin rotatably connected between the boom and the rod body; an end of the boom away from the rod body is mounted on the mounting bracket.

[0014] Optionally, the vehicle suspension system further comprises a steering tie rod rotatably connected with the knuckle and used for driving the knuckle to rotate relative to the lower swing arm.

[0015] Optionally, the upper swing arm is provided with at least one third mounting hole at an end away from the knuckle; the upper swing arm further comprises at least one third bushing installed in the third mounting hole in one-to-one correspondence and used for connecting a subframe.

[0016] A vehicle comprises the vehicle suspension system.

[0017] The vehicle suspension system comprises an upper swing arm, a lower swing arm, a damping assembly and a knuckle used for mounting a hub motor; the knuckle is rotatably connected between the upper swing arm and the lower swing arm; an end of the upper swing arm away from the knuckle and an end of the lower swing arm away from the knuckle are both connected with a subframe; an upper end of the damping assembly is connected with the subframe, and a lower end of the damping assembly is rotatably installed on the lower swing arm.

[0018] In the vehicle suspension system, the knuckle is arranged between the upper swing arm and the lower swing arm, and the hub motor used for driving a wheel is mounted on the knuckle, without the need of arranging an intermediate transmission component used for transmitting driving force of the wheel on the vehicle body, so that sufficient mounting space can be reserved on the vehicle body, allowing the lower end of the damping assembly to be directly rotatably installed on the lower swing arm at a lower mounting point, without the need of arranging a support member over the driving half shaft on the lower swing arm, so that the vertical height and the overall mounting volume of the vehicle suspension system can be reduced under the premise of meeting the damping requirement of the vehicle, the unsprung mass is reduced, the overall weight and impact load of the vehicle suspension system are reduced, and the stability of the vehicle during driving is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model is further illustrated below in combination with the drawings and embodiments.

[0020] Figure 1 Is the structure schematic diagram of vehicle suspension system of an embodiment of the utility model provides.

[0021] Figure 2 Is the structure schematic diagram of lower swing arm of vehicle suspension system of an embodiment of the utility model provides.

[0022] Figure 3 Is the structure schematic diagram of damping support of vehicle suspension system of an embodiment of the utility model provides.

[0023] Figure 4 Is the partial structure schematic diagram of stabilizer bar of vehicle suspension system of an embodiment of the utility model provides.

[0024] Figure 5 Is the structure schematic diagram of upper swing arm of vehicle suspension system of an embodiment of the utility model provides.

[0025] The reference signs in the specification are as follows:

[0026] 100, upper swing arm;110, third mounting hole;120, third bushing;200, lower swing arm;210, first mounting hole;220, rotating shaft;230, first bushing;240, first ball pin;250, second mounting hole;260, second bushing;270, mounting support;300, damping assembly;310, damping body;400, damping support;410, connecting clamp;420, first connecting rod;430, second connecting rod;500, steering knuckle;600, stabilizer bar;610, boom;620, rod body;630, second ball pin;700, steering drag link. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clearly understood, the utility model is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0028] It should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the utility model and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0029] In the description of the utility model, it is necessary to explain that, unless another explicit provision and limitation, the term "installation", "set with", "sleeve set / interface", "connection" and the like should be broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0030] As Figure 1 The utility model discloses an embodiment provides a kind of vehicle suspension system, including upper swing arm 100, lower swing arm 200, damping component 300, and knuckle for installing wheel hub motor;The knuckle 500 is rotatably connected between the upper swing arm 100 and the lower swing arm 200;The end of the upper swing arm 100 away from the knuckle 500 and the end of the lower swing arm 200 away from the knuckle 500 are connected with auxiliary frame;The upper end of the damping component 300 is connected with auxiliary frame, and the lower end of the damping component 300 is rotatably installed on the lower swing arm 200.

[0031] In the embodiment, the vehicle suspension system can be applied in vehicle.The end of the upper swing arm 100 away from the knuckle 500, the end of the lower swing arm 200 away from the knuckle 500 and the upper end of the damping component 300 are connected with auxiliary frame;The knuckle 500 is connected with wheel and drives wheel by wheel hub motor after installing wheel hub motor.

[0032] It can be understood that the rotation axis between the knuckle 500 and the upper swing arm 100, the rotation axis between the knuckle 500 and the lower swing arm 200 are coaxially arranged, so that the knuckle 500 can rotate relative to the upper swing arm 100 and the lower swing arm 200, and then drive the wheel to rotate by the connection between wheel hub motor and wheel, to realize the steering function of vehicle.The upper swing arm 100 can be integrally cast into shape.The shape of the upper swing arm 100 can be set according to actual situation, as long as it can be connected between the knuckle 500 and auxiliary frame according to the above-mentioned connection mode and does not cause interference to the damping component 300.

[0033] In an embodiment, the upper swing arm 100 is in a U-shaped structure. The upper swing arm 100 is rotationally connected with the steering knuckle 500 at a middle position of the arc-shaped part of the U-shaped structure. The damping assembly 300 can be located in the gap of the U-shaped structure, thereby saving installation space. The upper swing arm 100 can be rotationally connected with the steering knuckle 500 through a ball pin, so that the steering knuckle 500 can swing relative to the upper swing arm 100. The damping assembly 300 can be an active damper or a passive damper. The hub motor is directly installed on the steering knuckle 500 and connected with the wheel, so that the intermediate transmission component for transmitting driving force to the wheel is not required to be arranged on the vehicle body, the hub motor is directly used to drive the wheel, and thus the weight of the vehicle chassis system is reduced. Further, since the intermediate transmission component occupying installation space is not required to be arranged on the vehicle body, sufficient space is provided on the vehicle body, the damping assembly 300 can be directly rotationally installed on the lower swing arm 200 at a lower mounting point (without the support member crossing the drive half shaft), the vehicle body height is reduced under the premise of meeting the damping requirement of the vehicle (i.e. meeting the damping length of the damping assembly 300), and the stability of the vehicle during driving is improved. Further, the steering knuckle 500 can be a cast structure. Two brake caliper mounting points can be arranged on the steering knuckle 500, so that the double brake system is used for braking, the braking distance is reduced, the braking performance is improved, the front and rear pitching of the vehicle is prevented, and the smooth performance is improved. The connection mode between the steering knuckle 500 and the hub motor includes but is not limited to one or more of screwing, clamping or welding, as long as a stable connection can be formed between the steering knuckle 500 and the hub motor.

[0034] In the vehicle suspension system of the above embodiment of the utility model, the steering knuckle 500 is arranged between the upper swing arm 100 and the lower swing arm 200, and the hub motor for driving the wheel is installed on the steering knuckle 500, without the intermediate transmission component for transmitting the driving force of the wheel being arranged on the vehicle body, so that sufficient installation space can be reserved on the vehicle body, the lower end of the damping assembly 300 can be directly rotationally installed on the lower swing arm 200 at a lower mounting point, without the support member crossing the drive half shaft being arranged on the lower swing arm 200, so that the vertical height and the overall installation volume of the vehicle suspension system can be reduced under the premise of meeting the damping requirement of the vehicle, the unsprung mass is reduced, the overall weight and impact load of the vehicle suspension system are reduced, and the stability of the vehicle during driving is improved.

[0035] In an embodiment, the damping assembly 300 comprises a damping body 310 and a damping bracket 400, the damping body 310 is connected between the subframe and the damping bracket 400, and the damping bracket 400 is rotatably installed on the lower swing arm 200 at an end away from the damping body 310. Since the damping body 310 is configured in the shape of a commonly used shock absorber, in order to adapt the damping body 310 to be installed on the lower swing arm 200 while reducing the height of the vehicle body, the damping bracket 400 can be connected to the lower swing arm as part of the damping assembly 300, and the size and shape of the damping bracket 400 can be set according to requirements as long as the damping body 310 can be adapted to be installed on the lower swing arm 200. Understandably, the damping bracket 400 can be a cast structure.

[0036] As shown in Figure 2 and Figure 3 In an embodiment, the lower swing arm 200 is provided with a first mounting hole 210, and the lower swing arm 200 further comprises a rotating shaft 220, the upper end of the damping bracket 400 is fixedly connected to the lower end of the damping body 310, and the lower end of the damping bracket 400 is rotatably installed on the lower swing arm 200 through the rotating shaft 220 passing through the first mounting hole 210. Understandably, the first mounting hole 210 is directly formed on the lower swing arm 200, so that the overall height of the damping assembly 300 can be reduced. The lower end of the damping bracket 400 and the rotating shaft 220 can be rotatably connected or fixedly connected, as long as one of the rotating shaft 220 and the first mounting hole 210 or the lower end of the damping bracket 400 is rotatably connected. The rotating shaft 220 is substantially perpendicular to the length direction (i.e. the vehicle width direction) of the lower swing arm 200 and substantially perpendicular to the length direction (i.e. the vehicle height direction) of the damping assembly 300, so that the damping assembly 300 can rotate along the lower swing arm 200.

[0037] As shown in Figure 3As shown in the drawings, in an embodiment, the damping support 400 comprises a connecting hoop 410, a first connecting rod 420 and a second connecting rod 430 which are all connected to the lower end of the connecting hoop 410; the connecting hoop 410 is connected to the lower end of the damping body 310; one end of the first connecting rod 420 and one end of the second connecting rod 430 which are away from the connecting hoop 410 are respectively connected to the opposite ends of the rotating shaft. It can be understood that the connecting hoop 410 can be a cylindrical structure with an opening, after the lower end of the damping body 310 is inserted into the connecting hoop 410, the opening of the connecting hoop 410 can be tightened by a bolt, so as to clamp the lower end of the damping body 310 on the connecting hoop 410, thereby realizing the fixed connection between the damping body 310 and the damping support 400. The first connecting rod 420 and the second connecting rod 430 are respectively located at the opposite ends of the first mounting hole 210, and the rotating shaft 220 passes through the first mounting hole 210 and is connected to the first connecting rod 420 and the second connecting rod 430 at both ends, so as to rotatably install the damping support 400 on the lower swing arm 200.

[0038] As shown in the drawings, Figure 2 In an embodiment, the lower swing arm 200 further comprises a first bushing 230 sleeved on the rotating shaft 220; the rotating shaft 220 is rotatably installed in the first mounting hole 210 through the first bushing 230. It can be understood that the first bushing 230 can be a rubber bushing, thereby having a damping effect. The rotating shaft 220 can be a bolt passing through the first bushing 230, at this time, the first connecting rod 420 and the second connecting rod 430 can be rotatably installed in the first mounting hole 210 by a bolt. The first bushing 230 is coaxially arranged with the first mounting hole 210, thereby facilitating the reduction of the impact load of the up-and-down bouncing on the vehicle suspension system, and also improving the comfort and roll performance of the vehicle.

[0039] As shown in the drawings, Figure 2 In an embodiment, the lower swing arm 200 is provided with a first ball pin 240, and the lower swing arm 200 is rotatably connected with the knuckle 500 through the first ball pin 240. It can be understood that the first ball pin 240 is arranged at one end of the lower swing arm 200 away from the sub-frame. It can be understood that the lower swing arm 200 is rotatably connected with the knuckle 500 through the first ball pin 240, so that the knuckle 500 can swing relative to the lower swing arm 200.

[0040] As shown in the drawings, Figure 2As shown in the drawings, in an embodiment, the lower swing arm 200 is provided with at least one second mounting hole 250 at one end away from the knuckle 500; the lower swing arm 200 further comprises at least one second bushing 260 mounted in the second mounting hole 250 and used for connecting the subframe. It can be understood that the central axis of the second mounting hole 250 can be arranged along the length direction of the vehicle, so as to reduce the swing stiffness of the second bushing 260 arranged in the second mounting hole 250, and further reduce the force of the wheel up-and-down bouncing on the subframe, reduce the transmission of the excitation from the road surface or the wheel to the subframe, effectively improve the road noise and tire noise, improve the NVH performance of the vehicle, and further increase the stroke of the vehicle suspension system, and ensure the roll performance and stability performance of the vehicle.

[0041] As shown in the drawings, Figure 1 , Figure 2 and Figure 4 As shown in the drawings, in an embodiment, the lower swing arm 200 is provided with a mounting bracket 270; the vehicle suspension system further comprises a stabilizer bar 600; the stabilizer bar 600 comprises a boom 610, a rod body 620, and a second ball pin 630 rotationally connected between the boom 610 and the rod body 620; one end of the boom 610 away from the rod body 620 is mounted on the mounting bracket 270. It can be understood that the boom 610 can be arranged along the height direction of the vehicle, and the rod body 620 can be arranged along the width direction of the vehicle. The boom 610 and the rod body 620 are connected through the second ball pin 630, so as to facilitate reducing the line diameter of the rod body 620 and the stress at the mounting bracket 270, and also facilitate reducing the size and weight of the mounting bracket 270, relatively reduce the vertical height of the vehicle suspension system, reduce the arrangement space of the vehicle suspension system, and thus reduce the cost of the vehicle suspension system, ensure the performance of the vehicle suspension system, and achieve the dual effects of weight reduction and cost reduction.

[0042] As shown in the drawings, Figure 1 As shown in the drawings, in an embodiment, the vehicle suspension system further comprises a steering tie rod 700 rotationally connected with the knuckle 500 and used for driving the knuckle 500 to rotate relative to the lower swing arm 200. It can be understood that the steering tie rod 700 can be rotationally connected at different positions on the knuckle 500 according to actual conditions, as long as the knuckle 500 can be driven to rotate relative to the lower swing arm 200. In an embodiment, the steering tie rod 700 is rotationally connected at one end of the knuckle 500 away from the rotation shaft of the knuckle 500 and the lower swing arm 200, so as to increase the force arm of the steering tie rod 700 for driving the knuckle 500 to rotate, and make the steering tie rod 700 more convenient to drive the knuckle 500 to rotate.

[0043] As Figure 5 shown in the drawings, in an embodiment, the upper swing arm 100 is provided with at least one third mounting hole 110 at one end away from the knuckle 500; the upper swing arm 100 further comprises at least one third bushing 120 installed in the third mounting hole 110 in a one-to-one correspondence and used for connecting a subframe. It can be understood that the upper swing arm 100 can be in a U-shaped structure, so that the damping assembly 300 is located in the gap of the U-shaped structure, thereby saving space. The central axis of the third bushing 120 can be arranged in the length direction of the vehicle, so as to increase the stroke of the vehicle suspension system and ensure the roll performance of the vehicle.

[0044] An embodiment of the utility model further provides a vehicle comprising the vehicle suspension system. The specific structure of the vehicle suspension system can be referred to the above-mentioned embodiments, which will not be repeated here.

[0045] In the vehicle of the above-mentioned embodiments of the utility model, the knuckle 500 is arranged between the upper swing arm 100 and the lower swing arm 200, and the hub motor used for driving the wheel is installed on the knuckle 500, without the need of arranging an intermediate transmission component used for transmitting the driving force of the wheel on the vehicle body, so that sufficient installation space can be reserved on the vehicle body, allowing the lower end of the damping assembly 300 to be directly rotatably installed on the lower swing arm 200 at a lower mounting point, without the need of arranging a support member over the driving half shaft on the lower swing arm 200, so that the vertical height and the overall installation volume of the vehicle suspension system can be reduced under the premise of meeting the damping requirement of the vehicle, and the unsprung mass is also reduced, the overall weight and impact load of the vehicle suspension system are reduced, and the stability of the vehicle during driving is improved.

[0046] The above is only an embodiment of the vehicle suspension system and the vehicle of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A vehicle suspension system characterized by, The vehicle suspension system comprises an upper swing arm, a lower swing arm, a damping assembly, and a steering knuckle for mounting a hub motor; The steering knuckle is rotationally connected between the upper swing arm and the lower swing arm; one end of the upper swing arm away from the steering knuckle and one end of the lower swing arm away from the steering knuckle are connected with a sub-frame; an upper end of the damping assembly is connected with the sub-frame, and a lower end of the damping assembly is rotationally mounted on the lower swing arm.

2. The vehicle suspension system of claim 1, wherein, The damping assembly comprises a damping body and a damping bracket; the damping body is connected between the sub-frame and the damping bracket; and one end of the damping bracket away from the damping body is rotationally mounted on the lower swing arm.

3. The vehicle suspension system of claim 2, wherein, The lower swing arm is provided with a first mounting hole; the lower swing arm further comprises a rotation shaft; an upper end of the damping bracket is fixedly connected with a lower end of the damping body; and a lower end of the damping bracket is rotationally mounted on the lower swing arm through the rotation shaft passing through the first mounting hole.

4. The vehicle suspension system of claim 3, wherein, The damping bracket comprises a connecting clamp and first and second connecting rods connected at a lower end of the connecting clamp; The connecting clamp is connected with the lower end of the damping body; one end of the first connecting rod away from the connecting clamp and one end of the second connecting rod away from the connecting clamp are respectively connected with opposite ends of the rotation shaft.

5. The vehicle suspension system of claim 3, wherein, The lower swing arm further comprises a first bushing sleeved on the rotation shaft; and the rotation shaft is rotationally mounted in the first mounting hole through the first bushing.

6. The vehicle suspension system of claim 1, wherein, The lower swing arm is provided with a first ball pin; the lower swing arm is rotationally connected with the steering knuckle through the first ball pin; and / or One end of the lower swing arm away from the steering knuckle is provided with at least one second mounting hole; the lower swing arm further comprises at least one second bushing installed in the second mounting hole in one-to-one correspondence and used for connecting the sub-frame.

7. The vehicle suspension system of claim 1, wherein, The lower swing arm is provided with a mounting bracket; the vehicle suspension system further comprises a stabilizer bar; the stabilizer bar comprises a boom, a rod body, and a second ball pin rotationally connected between the boom and the rod body; one end of the boom away from the rod body is mounted on the mounting bracket.

8. The vehicle suspension system of claim 1, wherein, The vehicle suspension system further comprises a steering tie rod rotationally connected with the steering knuckle and used for driving the steering knuckle to rotate relative to the lower swing arm.

9. The vehicle suspension system of claim 1, wherein, One end of the upper swing arm away from the steering knuckle is provided with at least one third mounting hole; the upper swing arm further comprises at least one third bushing installed in the third mounting hole in one-to-one correspondence and used for connecting the sub-frame.

10. A vehicle characterized by comprising: The vehicle suspension system comprises the vehicle suspension system according to any one of claims 1 to 9.

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