Suspension system of vehicle and vehicle

Abstract

The present invention discloses a suspension system of a vehicle and a vehicle, wherein the suspension system of the vehicle comprises: a steering knuckle; a connecting member, wherein the connecting member is connected to the steering knuckle and the connecting member is movable relative to the steering knuckle in the height direction of the vehicle; a lower control arm, wherein the ball head of the lower control arm is connected to the connecting member; and a driving member, wherein the driving member is suitable for driving the connecting member to move relative to the steering knuckle so that the connecting member drives the ball head to move in the height direction of the vehicle. Thus, by cooperating with the steering knuckle, the connecting member, the lower control arm and the driving member, compared with the prior art, the driving member can be automatically controlled to drive the connecting member to adjust the position of the ball head of the lower control arm by controlling the driving member, thereby realizing rapid adjustment of the roll center height of the suspension system, improving the handling stability and comfort of the vehicle, and also improving the driving safety of the vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and in particular to a suspension system of a vehicle and a vehicle having the same. Background Art

[0002] In the related art, the roll center height of the suspension system of existing vehicles cannot be adjusted, which leads to poor handling stability and comfort of the vehicle during vehicle turning, affecting the driving safety of the vehicle. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a vehicle suspension system, which can automatically control the driving member to drive the connecting member to adjust the position of the ball head of the lower control arm by controlling the driving member, thereby realizing rapid adjustment of the roll center height of the suspension system, improving the handling stability and comfort of the vehicle, and also improving the driving safety of the vehicle.

[0004] The present invention further provides a vehicle.

[0005] The suspension system of a vehicle according to the present invention comprises: a steering knuckle; a connecting member, the connecting member is connected to the steering knuckle and the connecting member is movable relative to the steering knuckle in the height direction of the vehicle; a lower control arm, the ball head of the lower control arm is connected to the connecting member; and a driving member, the driving member is suitable for driving the connecting member to move relative to the steering knuckle, so that the connecting member drives the ball head to move in the height direction of the vehicle.

[0006] The suspension system of the vehicle according to the present invention cooperates with the steering knuckle, the connecting member, the lower control arm and the driving member. Compared with the prior art, the driving member can be automatically controlled to drive the connecting member to adjust the position of the ball head of the lower control arm by controlling the driving member, thereby realizing rapid adjustment of the roll center height of the suspension system and the vehicle body height, improving the handling stability and comfort of the vehicle, and also improving the driving safety of the vehicle.

[0007] In some examples of the present invention, the connecting member is threadedly connected to the steering knuckle, and the driving member drives the connecting member to rotate so that the connecting member moves in a height direction of the vehicle.

[0008] In some examples of the present invention, the outer surface of the connecting member is provided with a first threaded portion, the steering knuckle is provided with a first mounting hole, and the inner surface of the first mounting hole is provided with a second threaded portion threadably matched with the first threaded portion.

[0009] In some examples of the present invention, the steering knuckle is provided with a second mounting hole connected to the first mounting hole, a driving shaft of the driving member is installed in the second mounting hole, and the driving shaft is drivingly connected to the first threaded portion.

[0010] In some examples of the present invention, the driving member is provided with an upper limit switch, and the upper limit switch is suitable for stopping with the connecting member.

[0011] In some examples of the present invention, a lower limit switch is provided at the upper end of the connecting member, and the lower limit switch is suitable for stopping with the steering knuckle.

[0012] In some examples of the present invention, the connecting member is configured as a sleeve, a bearing is disposed inside the sleeve, and the bearing is connected to the ball head.

[0013] In some examples of the present invention, the ball head is provided with a mounting rod, a fastener is provided on a side of the bearing away from the ball head, and the mounting rod passes through the bearing and is connected to the fastener.

[0014] In some examples of the present invention, an oil storage hole is provided on the inner surface of the first mounting hole and / or the inner surface of the second mounting hole.

[0015] In some examples of the present invention, the suspension system of the vehicle further includes: a current controller, wherein the current controller is connected between the vehicle controller and the driving member, and the vehicle controller is used to control the driving member to drive the connecting member to move through the current controller.

[0016] A vehicle according to the present invention comprises the above-mentioned vehicle suspension system.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of the roll center position of a suspension system of a vehicle according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a suspension system of a vehicle according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 Sectional view at NN in the middle;

[0022] Figure 4yes Figure 2 Cross-sectional view at MM.

[0023] Reference numerals:

[0024] Suspension system 100;

[0025] Steering knuckle 10; first mounting hole 11; second mounting hole 12;

[0026] Connecting piece 20; lower limit switch 22; bearing 23; fastener 24;

[0027] Lower control arm 30; ball head 31; mounting rod 311;

[0028] Driving member 40; driving shaft 41; upper limit switch 42;

[0029] Shock absorber 50; YZ center plane 60. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] Reference below Figure 1-Figure 4 A suspension system 100 for a vehicle according to an embodiment of the present invention is described.

[0032] like Figure 1-Figure 4 As shown, the suspension system 100 of a vehicle according to an embodiment of the present invention includes: a steering knuckle 10, a connecting member 20, a lower control arm 30 and a driving member 40. The connecting member 20 can be connected to the steering knuckle 10, and the connecting member 20 can move relative to the steering knuckle 10 in the height direction of the vehicle. It can also be understood that the height of the connecting member 20 relative to the steering knuckle 10 in the height direction of the vehicle is adjustable. The ball head 31 of the lower control arm 30 is connected to the connecting member 20, and the driving member 40 is suitable for driving the connecting member 20 to move relative to the steering knuckle 10, so that the connecting member 20 drives the ball head 31 to move in the height direction of the vehicle. It should be noted that the connecting member 20 can extend into the steering knuckle 10 and connect to the steering knuckle 10. The connecting member 20 can be mounted on the ball head 31 of the lower control arm 30 to achieve the connection between the connecting member 20 and the ball head 31. The driving member 40 can be arranged on the steering knuckle 10. The driving member 40 can be controlled to work by the vehicle controller. The driving member 40 can drive the connecting member 20 to move up and down in the steering knuckle 10, and the up and down directions are Figure 4 In the up and down direction of the vehicle, the driving member 40 can be set as a motor, which drives the connecting member 20 to move up and down in the steering knuckle 10 to drive the ball head 31 to move in the height direction of the vehicle, so as to change the Figure 1The position of the roll center K of the suspension system 100 shown in FIG. 1 further improves the driving stability of the vehicle.

[0033] It should be noted that if Figure 1 As shown, the roll center of the suspension system 100 is point K, the ball head center of the lower control arm 30 is point B, the center point of the mounting plane on the shock absorber 50 is point D, and the tire grounding point is point H. First, find the ball head center B and the center point D of the mounting plane on the shock absorber 50, then make a vertical line E of the shock absorber 50 perpendicular to the center line of the shock absorber 50 and through point D, then make a line A perpendicular to the rotation axis of the lower control arm 30 and through the ball head center B, and extend line A to intersect the vertical line E to the instantaneous center point G, connect the instantaneous center point G and the tire grounding point H, and the intersection of the GH line and the vehicle YZ center plane 60 is the roll center K of the suspension system 100, Y is the width direction of the vehicle, and Z is the height direction of the vehicle. It can be seen from the geometric figure that when the height of the ball head center B changes, the height of the roll center K will also change accordingly.

[0034] When the driving member 40 drives the connecting member 20 to move relative to the steering knuckle 10, so that the connecting member 20 drives the ball head 31 to move in the height direction of the vehicle, the position of the ball head center B in the height direction of the vehicle changes. Figure 1 It can be seen that when the position of the ball head center B in the height direction of the vehicle changes, the height of the roll center K in the height direction of the vehicle will also change accordingly. The present application is able to achieve the effect of adjusting the height of the roll center K through this principle. Such a setting can change the position of the roll center K in the suspension system 100 by changing the position of the ball head center B. Compared with the prior art, the structure of the suspension system 100 is simplified, the mass of the suspension system 100 is reduced, and the manufacturing cost of the suspension system 100 is reduced. In addition, by controlling the driving member 40 through the vehicle controller, the driving member 40 can be automatically controlled to drive the connecting member 20 to move to adjust the position of the ball head 31 of the lower control arm 30. The height of the roll center of the suspension system 100 can be changed, and the handling stability and comfort of the vehicle can be improved. At the same time, when the vehicle turns, the vehicle controller controls the driving member 40 according to the signal. By adjusting the height of the ball head center B, the height of the roll center of the suspension system 100 is changed, which can increase the driving safety of the vehicle and reduce the debugging time during four-wheel alignment.

[0035] Therefore, by cooperating with the steering knuckle 10, the connecting member 20, the lower control arm 30 and the driving member 40, compared with the prior art, the structure of the suspension system 100 is simplified, the weight is reduced, and the manufacturing cost is reduced. The driving member 40 can be automatically controlled to drive the connecting member 20 to adjust the position of the ball head 31 of the lower control arm 30 by controlling the driving member 40, so as to realize the rapid adjustment of the height of the roll center K of the suspension system 100 and the height of the vehicle body, thereby improving the handling stability and comfort of the vehicle, and also improving the driving safety of the vehicle.

[0036] In some embodiments of the present invention, the connecting member 20 can be screwed to the steering knuckle 10, and the driving member 40 can drive the connecting member 20 to rotate so that the connecting member 20 moves relative to the steering knuckle 10 in the height direction of the vehicle. It should be explained that the connecting member 20 and the steering knuckle 10 can be screwed together, and when the connecting member 20 rotates in the steering knuckle 10, the connecting member 20 can be moved in the height direction of the vehicle, and the connecting member 20 can be driven by the driving member 40 to rotate in the steering knuckle 10. This arrangement can achieve the technical effect of driving the ball head 31 to move in the height direction of the vehicle by driving the connecting member 20 to rotate, thereby changing the height of the roll center K of the suspension system 100, thereby improving the driving stability of the vehicle.

[0037] In some embodiments of the present invention, the outer surface of the connector 20 may be provided with a first threaded portion, the steering knuckle 10 may be provided with a first mounting hole 11, the first mounting hole 11 may penetrate the steering knuckle 10 in the height direction of the steering knuckle 10, and the inner surface of the first mounting hole 11 may be provided with a second threaded portion threadedly matched with the first threaded portion. It should be noted that the first threaded portion may be threadedly connected with the second threaded portion, and through the threaded matching of the first threaded portion and the second threaded portion, when the connector 20 rotates in the steering knuckle 10, the technical effect of the connector 20 moving in the height direction of the vehicle can be achieved. Such a setting can make the connector 20 move in the height direction of the vehicle, so that the connector 20 can drive the ball head 31 to move in the height direction of the vehicle, and then the height of the roll center K of the suspension system 100 of the vehicle can be changed, thereby playing a role in improving the driving stability of the vehicle, and through the connection of the first threaded portion and the second threaded portion, the connector 20 can be reliably installed in the first mounting hole 11, and the connector 20 can be prevented from being separated from the steering knuckle 10.

[0038] In some embodiments of the present invention, Figure 4As shown, the steering knuckle 10 may be provided with a second mounting hole 12 connected to the first mounting hole 11, and the second mounting hole 12 may penetrate the steering knuckle 10 in the height direction of the steering knuckle 10, and the driving shaft 41 of the driving member 40 may be installed in the second mounting hole 12, and the driving shaft 41 is in transmission connection with the first threaded portion. It should be explained that after the driving shaft 41 of the driving member 40 is inserted into the second mounting hole 12, that is, after the driving shaft 41 extends into the second mounting hole 12, the driving shaft 41 is in transmission connection with the first threaded portion, preferably, the driving shaft 41 is in threaded connection with the first threaded portion, when the driving member 40 drives the driving shaft 41 to rotate, due to the transmission connection between the driving shaft 41 and the first threaded portion, the driving shaft 41 drives the connecting member 20 to rotate, so that the connecting member 20 can move in the height direction of the vehicle, and then the height of the roll center K of the suspension system 100 can be changed. It can be understood that the driving shaft 41 is a screw.

[0039] In some embodiments of the present invention, Figure 4 As shown, the driving member 40 may be provided with an upper limit switch 42, and the upper limit switch 42 is suitable for stopping with the connecting member 20. It should be noted that, as Figure 1 As shown, the upper limit switch 42 can be set at the upper end of the driving member 40, and in the height direction of the vehicle, the projection of the upper limit switch 42 and the projection of the connecting member 20 have an overlapping area. When the driving member 40 drives the connecting member 20 to move upward in the steering knuckle 10, the connecting member 20 rotates to the upper limit switch 42, and the connecting member 20 is stopped by the upper limit switch 42, and the connecting member 20 cannot continue to move upward. Among them, the upper limit switch 42 can be connected to the vehicle controller. When the connecting member 20 moves upward and contacts the upper limit switch 42, the upper limit switch 42 sends a signal to the vehicle controller, and the vehicle controller stops transmitting current to the driving member 40, and the driving member 40 stops working, thereby realizing the stop of the upper limit switch 42 and the connecting member 20. The upward adjustment range of the connecting member 20 can be set to 15mm. Such a setting can prevent the connecting member 20 from moving upward in the steering knuckle 10, resulting in the separation of the connecting member 20 from the steering knuckle 10, and can improve the working stability of the suspension system 100.

[0040] In some embodiments of the present invention, a lower limit switch 22 may be provided at the upper end of the connecting member 20, and the lower limit switch 22 is suitable for stopping with the steering knuckle 10. Figure 4As shown, the lower limit switch 22 can be set on the outer surface of the side wall of the connecting member 20, and the lower limit switch 22 is set near the upper end of the connecting member 20. When the driving member 40 drives the connecting member 20 to move downward in the steering knuckle 10, the lower limit switch 22 of the connecting member 20 stops with the upper surface of the steering knuckle 10, and the connecting member 20 cannot continue to move downward. The lower limit switch 22 can be connected to the vehicle controller. When the connecting member 20 moves downward so that the lower limit switch 22 touches the steering knuckle 10, the lower limit switch 22 sends a signal to the vehicle controller, and the vehicle controller stops transmitting current to the driving member 40, and the driving member 40 stops working, thereby achieving the stop of the lower limit switch 22 and the steering knuckle 10. The downward adjustment range of the connecting member 20 can be set to 15mm. Such a setting can prevent the connecting member 20 from moving downward in the steering knuckle 10 and causing the connecting member 20 to be separated from the steering knuckle 10, and can improve the stability of the suspension system 100.

[0041] In some embodiments of the present invention, the connector 20 may be configured as a sleeve, a bearing 23 may be disposed in the sleeve, and the bearing 23 may be connected to the ball head 31. It should be noted that before the connector 20 is installed on the steering knuckle 10, the bearing 23 is first pressed into the connector 20, and the connection between the bearing 23 and the sleeve may be an interference fit, and then the connector 20 is screwed into the first mounting hole 11 of the steering knuckle 10, and a part of the ball head 31 may extend into the bearing 23. Through the connection between the ball head 31 and the bearing 23, the connector 20 can drive the ball head 31 to move synchronously, thereby changing the height of the roll center K of the suspension system 100 of the vehicle, thereby improving the driving stability of the vehicle.

[0042] In some embodiments of the present invention, Figure 4 As shown, the ball head 31 may be provided with a mounting rod 311, and a fastener 24 may be provided on the side of the bearing 23 away from the ball head 31, and the mounting rod 311 passes through the bearing 23 and is connected to the fastener 24. It should be explained that the upper end of the ball head 31 may be provided with a mounting rod 311, and the outer surface of the mounting rod 311 may be provided with a thread. After the mounting rod 311 passes through the bearing 23, the mounting rod 311 may be provided with a screw structure, and the fastener 24 may be provided with a nut. Through the cooperation of the nut and the screw thread, the mounting rod 311 passes through the bearing 23 and is fixed in the connecting member 20, so that the connecting member 20 can drive the ball head 31 to move synchronously, so that the height of the roll center K of the suspension system 100 of the vehicle can be changed, thereby playing a role in improving the driving stability of the vehicle.

[0043] In some embodiments of the present invention, the inner surface of the first mounting hole 11 and / or the inner surface of the second mounting hole 12 may be provided with an oil storage hole. It should be noted that the oil storage hole may be provided only on the inner surface of the first mounting hole 11, or only on the inner surface of the second mounting hole 12, or both on the inner surface of the first mounting hole 11 and the inner surface of the second mounting hole 12. The oil storage hole may store grease, which may lubricate the suspension system 100. After the suspension system 100 is installed, the drive member 40 may be powered on for debugging, and the suspension system 100 may be tested for whether there is a stuck phenomenon when adjusting the height of the roll center K, and finally debugged according to the requirements of the vehicle. Such a setting can make the suspension system 100 more sensitive when adjusting the roll center K, thereby improving the adjustment accuracy, and further improving the handling stability of the vehicle.

[0044] In some embodiments of the present invention, the suspension system 100 of the vehicle may further include: a current controller, which may be connected between the vehicle controller and the driving member 40, and the vehicle controller is used to control the driving member 40 to drive the connecting member 20 to move through the current controller. It should be noted that multiple sensors can be installed on the vehicle, and the sensors may include: a height sensor, a steering wheel angle sensor, a steering wheel speed sensor, a wheel speed sensor, a throttle opening sensor, and a brake pedal sensor. The height sensor can collect the position information of the ball head 31 to provide a basis for adjusting the height of the ball head 31. The remaining sensors can provide the vehicle controller with a steering wheel angle signal, a steering wheel speed signal, a wheel speed signal, a throttle opening signal, and a brake pedal signal. The vehicle controller determines the current driving state of the vehicle and the driver's input signal by receiving the above signals. When the vehicle controller receives the above signals, it will perform intelligent calculations and send instructions to the current controller in advance within 20ms of entering the road ahead. After receiving the instructions, the current controller controls the current direction, and then the current controller transmits the current to the driving member 40. By changing the current direction, the driving member 40 drives the connecting member 20 to move up and down. At the same time, the vehicle controller can directly control the opening and closing of the current. When the upper limit switch 42 stops with the connecting member 20 or the lower limit switch 22 stops with the steering knuckle 10, the vehicle controller controls the current to be closed. This arrangement enables the driver to actively control the driving member 40 to drive the connecting member 20 to adjust the position of the ball head 31 of the lower control arm 30 according to actual conditions, thereby achieving height adjustment of the roll center K of the suspension system 100 and improving the handling stability and comfort of the vehicle.

[0045] The vehicle according to the embodiment of the present invention includes the suspension system 100 of the vehicle of the above-mentioned embodiment. The suspension system 100 of the vehicle can be arranged on the vehicle. Compared with the prior art, the structure of the suspension system 100 is simplified, the weight is reduced, and the manufacturing cost is reduced. The driving member 40 can be automatically controlled to drive the connecting member 20 to adjust the position of the ball head 31 of the lower control arm 30 by controlling the driving member 40, so as to realize the height adjustment of the roll center K of the suspension system 100, thereby improving the handling stability and comfort of the vehicle and also improving the driving safety of the vehicle.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A suspension system for a vehicle, characterized in that: include: Steering knuckle; A connecting member, the connecting member is connected to the steering knuckle, and the connecting member is movable relative to the steering knuckle in a height direction of the vehicle; A lower control arm, wherein a ball head of the lower control arm is connected to the connecting member; A driving member, wherein the driving member is adapted to drive the connecting member to move relative to the steering knuckle, so that the connecting member drives the ball head to move in a height direction of the vehicle; The connecting member is screwed to the steering knuckle, and the driving member drives the connecting member to rotate so that the connecting member moves in the height direction of the vehicle; The outer surface of the connecting member is provided with a first threaded portion, the steering knuckle is provided with a first mounting hole, and the inner surface of the first mounting hole is provided with a second threaded portion threadably matched with the first threaded portion; The steering knuckle is provided with a second mounting hole communicated with the first mounting hole, the driving shaft of the driving member is installed in the second mounting hole, and the driving shaft is drivingly connected to the first threaded portion.

2. The vehicle suspension system according to claim 1, characterized in that: The driving member is provided with an upper limit switch, and the upper limit switch is suitable for stopping with the connecting member.

3. The vehicle suspension system according to claim 1, characterized in that: A lower limit switch is provided at the upper end of the connecting member, and the lower limit switch is suitable for stopping with the steering knuckle.

4. The vehicle suspension system according to claim 1, characterized in that: The connecting piece is constructed as a sleeve, a bearing is arranged inside the sleeve, and the bearing is connected to the ball head.

5. The vehicle suspension system according to claim 4, characterized in that: The ball head is provided with a mounting rod, a fastener is provided on a side of the bearing away from the ball head, and the mounting rod passes through the bearing and is connected with the fastener.

6. The vehicle suspension system according to claim 1, characterized in that: An oil storage hole is provided on the inner surface of the first mounting hole and / or the inner surface of the second mounting hole.

7. The vehicle suspension system according to claim 1, characterized in that: Also includes: A current controller is connected between the vehicle controller and the driving member, and the vehicle controller is used to control the driving member to drive the connecting member to move through the current controller.

8. A vehicle, characterized in that: A suspension system for a vehicle comprising any one of claims 1-7.

Images