CN111231597A

CN111231597A - Anti-roll bar device and wheel anti-roll system

Info

Publication number: CN111231597A
Application number: CN201811441974.8A
Authority: CN
Inventors: 杨纯宾; 许伟伦; 吴宪儒
Original assignee: Metal Industries Research and Development Centre
Current assignee: Metal Industries Research and Development Centre
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2020-06-05

Abstract

The invention provides an anti-roll bar device and a wheel anti-roll system. Each rod component comprises a first end and a second end, wherein the two first ends of the two rod components are respectively suitable for being connected to the two suspension control arms, and the two driving modules are respectively connected to the two second ends of the two rod components. When the two wheels generate a height difference, the two driving modules drive the two rod assemblies to enable one of the rod assemblies to drive the corresponding suspension control arm to move downwards, and the other rod assembly drives the corresponding suspension control arm to move upwards, so that the height difference between the two wheels is reduced.

Description

Anti-roll bar device and wheel anti-roll system

Technical Field

The present invention relates to an anti-roll bar device and a wheel anti-roll system, and more particularly, to an electronically controlled anti-roll bar device and a wheel anti-roll system.

Background

When the vehicle is turning over, if the speed reaches the limit of turning, the vehicle has two steering characteristics of understeer and oversteer. In both of these characteristics, understeer is much more stable than oversteer, since when understeer occurs, it can be corrected by simply reducing the speed. Therefore, vehicles for general roads are almost designed to be under-steered. The anti-roll bar can adjust the degree of understeer, so that the vehicle can reach the characteristic of biased understeer and maintain proper controllability and riding.

In addition, when the vehicle travels on a bumpy road section, the left and right wheels may be displaced up and down or even tilted. At this time, different acting forces are generated at the two ends of the suspension system, if the anti-roll bar is arranged on the lower arm or the shock absorber of the vehicle suspension system, the anti-roll bar can play a role of transmitting the acting force to the other side, so that the stress distribution of the wheels at the two sides is even, the gravity center of the vehicle is less shifted, the vehicle body cannot incline, and the overturn is prevented. However, although the conventional anti-roll bar can reduce the possibility of overturning the vehicle body, the vehicle body still vibrates up and down when passing through an uneven road, and passengers in the vehicle still feel uncomfortable.

Disclosure of Invention

The invention provides an anti-roll bar device which can reduce the possibility of vibration of a vehicle body when the vehicle body passes through an uneven road section.

The invention provides a wheel anti-tilting system which is provided with the anti-tilting rod device.

The invention relates to an anti-roll bar device which is suitable for being pivoted to two suspension control arms of two wheels. Each rod component comprises a first end and a second end, wherein the two first ends of the two rod components are respectively suitable for being connected to the two suspension control arms. The two driving modules are respectively connected to the two second ends of the two rod assemblies. When the two wheels generate a height difference, the two driving modules drive the two rod assemblies, so that one rod assembly drives the corresponding suspension control arm to move downwards, and the other rod assembly drives the corresponding suspension control arm to move upwards, so that the height difference between the two wheels is reduced.

In an embodiment of the invention, the rod assemblies include a curved rod connected to the corresponding driving module and a gimbal rod movably connected to the curved rod, the gimbal rod is connected to the suspension control arm, the first end of each rod assembly is an end of the gimbal rod connected to the corresponding suspension control arm, and the second end of each rod assembly is an end of the curved rod connected to the driving module.

In an embodiment of the invention, the bending rod includes a first section and a second section connected to the first section in a bending manner, the second end is located on the first section, and when each rod assembly is driven, the second section of the bending rod is turned upwards or downwards by taking the first section as an axis so as to drive the corresponding suspension control arm to move upwards or downwards.

In an embodiment of the invention, the driving module includes a motor.

The invention discloses a wheel anti-tilting system, which comprises two wheels, two suspension control arms and an anti-tilting rod device. The two suspension control arms are respectively pivoted on the two wheels, and the anti-tilting rod device comprises two rod components and two driving modules. Each rod component comprises a first end and a second end, wherein the two first ends of the two rod components are respectively suitable for being connected to the two suspension control arms. The two driving modules are respectively connected to the two second ends of the two rod assemblies. When the two wheels generate a height difference, the two driving modules drive the two rod assemblies, so that one rod assembly drives the corresponding suspension control arm to move downwards, and the other rod assembly drives the corresponding suspension control arm to move upwards, so that the height difference between the two wheels is reduced.

In an embodiment of the invention, the two sensors are respectively disposed on the two suspension control arms.

In an embodiment of the present invention, the wheel tilting prevention system further includes two shock absorbers disposed on the two wheels, and the two sensors are disposed on the two shock absorbers, respectively.

Based on the above, when one of the wheels moves upward relative to the other wheel, the wheel anti-roll system of the present invention can sense the height positions of the two wheels through the sensor, and the controller can determine the height difference according to the information sensed by the sensor and instruct the two driving modules of the anti-roll bar device to operate. One of the driving modules enables one of the rod assemblies to drive the corresponding suspension control arm to move downwards, and the other driving module enables the other rod assembly to drive the corresponding suspension control arm to move upwards, so that the height difference between the two wheels is reduced. The wheel anti-tilt system and the anti-tilt rod device can stabilize the vehicle body through the adjustment, and reduce the uncomfortable feeling of people in the vehicle when the vehicle runs on a bumpy road. The design enables each driving module and the corresponding rod component to work together and independently, and no direct force transmission exists between the two rod components.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic view of a wheel anti-roll system according to an embodiment of the present invention.

Fig. 2 is a schematic top view of the wheel anti-roll system of fig. 1.

Fig. 3 is a schematic rear view of the wheel anti-roll system of fig. 1.

Fig. 4 is a schematic view of an anti roll bar device of the wheel anti roll system of fig. 1.

Fig. 5 is a partial schematic view of the wheel anti-roll system of fig. 1.

Fig. 6 is a partial schematic view of another perspective of the wheel anti-roll system of fig. 5.

[ notation ] to show

10: wheel anti-roll system

12: wheel of vehicle

14: shock absorber

20: sensor with a sensor element

30: controller

40: suspension control arm

100: anti-roll bar device

110: rod assembly

112: first end

114: second end

116: bent rod

116 a: the first section

116 b: second section

118: universal rod

120: drive module

Detailed Description

Fig. 1 is a schematic view of a wheel anti-roll system according to an embodiment of the present invention. Fig. 2 is a schematic top view of the wheel anti-roll system of fig. 1. Fig. 3 is a schematic rear view of the wheel anti-roll system of fig. 1. Fig. 4 is a schematic view of the anti roll bar device of the wheel of fig. 1. It should be noted that, in order to clearly express the relative position between the wheel anti-roll system 10 and the vehicle, only the two front wheels and the two suspension control arms 40 corresponding to the two wheels are shown, and the rest of the structure of the vehicle and the suspension system is hidden. Of course, the location at which the wheel anti-roll system 10 is provided on the vehicle is not limited to the front wheels. In addition, the wheel inclination prevention system 10 of the present embodiment may be applied to a general road automobile, an electric vehicle, a micro vehicle, a truck, or the like, and the kind of application is not limited.

Referring to fig. 1 to 3, in the present embodiment, the wheel tilting prevention system 10 includes two wheels 12, two suspension control arms 40 (also called "a arms") pivotally connected to the two wheels 12, a tilting bar device 100, a plurality of sensors 20, and a controller 30.

In this embodiment, the anti-roll bar device 100 is adapted to be pivotally connected to the suspension control systems (to which the suspension control arm 40 or the suspension itself may be connected) of the wheels 12. Further, the anti roll bar device 100 may be fixed to a vehicle chassis frame (not shown) using, for example, a fixing bracket, an anti roll bar fixing rubber, or the like. Of course, the manner in which the anti roll bar device 100 is fixed to the vehicle is not limited thereto, as long as the anti roll bar device 100 can be fixed without affecting the function thereof.

The anti-roll bar device 100 includes two bar assemblies 110 and two drive modules 120. Each rod assembly 110 includes a first end 112 and a second end 114, wherein the first ends 112 of the two rod assemblies 110 are respectively adapted to be connected to the two suspension control arms 40, and the second ends 114 are respectively connected to the two driving modules 120.

Fig. 5 is a partial schematic view of the wheel anti-roll system of fig. 1. Fig. 6 is a partial schematic view of another perspective of the wheel anti-roll system of fig. 5. Please refer to fig. 5 to fig. 6. In detail, in the present embodiment, each of the rod assemblies 110 of the anti-roll bar device 100 includes a curved rod 116 and a universal rod 118 pivotally connected to the curved rod 116. Each flexure 116 is connected to a corresponding drive module 120, and the gimbal 118 is pivotally connected to the corresponding suspension control arm 40. In this embodiment, the end of the gimbal 118 connected to the corresponding suspension control arm 40 is the first end 112 of the rod assembly 110, and the end of the flexure 116 connected to the driving module 120 is the second end 114 of the rod assembly 110. Of course, in other embodiments, the form of the lever assembly 110 is not so limited.

In addition, in the present embodiment, the bending rod 116 can be divided into a first section 116a and a second section 116b, and the second section 116b is connected with the first section 116a in a bending manner, so as to present a shape close to an L shape. The second end 114 of the rod assembly 110 is located on a first section 116a of the bent rod 116. The rod assembly 110 is adapted to rotate about the first section 116 a. In more detail, the first section 116a of the bent rod 116 is connected to the driving module 120 through the second end 114 of the rod assembly 110. When the driving module 120 drives the rod assembly 110 to rotate, the bending rod 116 rotates around the first section 116a since the first section 116a of the bending rod 116 is coaxial with the driving module 120. In addition, since the second section 116b of the curved bar 116 is not parallel to the first section 116a, when the curved bar 116 rotates around the first section 116a, the second section 116b and the gimbal 118 will be driven to rotate upwards or downwards, so that the suspension control arm 40 moves upwards or downwards, and the suspension control arm 40 further drives the wheel 12 to move upwards or downwards.

It should be noted that, in the present embodiment, rubber bearings or other soft materials may be disposed between the bending rod 116, the universal rod 118 and the suspension control arm 40 for buffering and spacing, and for buffering and absorbing shock. In addition to the universal rod 118, the suspension system is provided with a tripod, a tripod head, a plum string, and the like to fix the rod assembly and allow limited rotation. Of course, in other embodiments, the components used between the suspension system and the anti-roll bar device 100 are not limited thereto.

In the present embodiment, the driving module 120 is exemplified by a motor, such as a planetary gear reduction motor, a dc brush motor, a dc brushless motor, an ac motor, or a linear motor, but the kind of the driving module 120 is not limited thereto. When the drive module 120 is a motor, the operator can vary the torque output by the motor by supplying different voltages to the motor. That is, the driving module 120 of the present embodiment has a torque adjustable characteristic, so that the rigidity of the anti-roll bar device 100 can be adjusted according to different applications and user preferences, and the anti-roll bar device is suitable for applications in various fields. In addition, the driving module 120 may further include a planetary gear set to achieve the effects of speed reduction and speed increase.

Referring back to FIG. 1, the wheel anti-roll system 10 further includes two shock absorbers 14, wherein the two shock absorbers 14 are disposed on the two wheels 12. The sensors 20 are respectively disposed on the suspension control arms 40 and/or the shock absorbers 14, and are adapted to sense a change in height of the wheels 12 and a height difference generated by the wheels 12 during the traveling of the vehicle. In the present embodiment, the sensor 20 is, for example, a gyroscope (gyroscope), a position sensor, an acceleration sensor, or the like. Of course, in other embodiments, the type, number and mounting position of the sensors 20 are not limited thereto.

In the present embodiment, the controller 30 is electrically connected to the two driving modules 120 and the sensors 20, so that the sensors 20 can transmit the sensing result to the controller 30, and the controller 30 can instruct the driving modules 120 to operate. The signal transmission between the controller 30 and the two driving modules 120 and between the controller 30 and the sensor 20 may be, for example, wireless transmission technologies such as WIFI and bluetooth, or may be connected by physical lines, without limitation to the electrical connection.

It is worth mentioning that the existing linear anti-roll bar is directly connected with the two suspension control arms, when the wheel on one side of the vehicle presses the bump, the existing linear anti-roll bar can transfer the force to the wheel on the other side, so that the two wheels are stressed evenly, and the vehicle body is prevented from rolling too much. However, such a structure causes a situation in which the vehicle body vibrates and the wheel attachment is insufficient.

In order to avoid the above problem, in the present embodiment, the two rod assemblies 110 are not in contact with each other and are independent of each other. Each drive module 120 and corresponding rod assembly 110 can operate independently to operate the connected suspension control arm 40 and corresponding wheel 12 without interfering with the other set of drive modules 120, corresponding rod assemblies 110 and their connected suspension control arms 40 and corresponding wheels 12. Therefore, the force applied to one of the wheels 12 is not directly transmitted to the other wheel 12. In addition, since there is no contact between the two rod assemblies 110, the driving module 120 can be turned off under certain usage situations, so as to form an action mode of the anti-roll bar device 100, thereby facilitating the operation under special conditions.

In this embodiment, the two sensors 20 are capable of sensing the height position or height change of the two wheels 12 and communicating this information to the controller 30. The controller 30 can calculate the height difference between the two wheels and instruct the two driving modules 120 to operate according to the height difference information, such that one of the rod assemblies 110 drives the corresponding suspension control arm 40 to move downward, and the other rod assembly 110 drives the corresponding suspension control arm 40 to move upward, so as to reduce the height difference between the two wheels 12. More precisely, the reaction torque provided by the driving modules 120 can constrain the relative height change of the two wheels 12.

More specifically, when a vehicle using the wheel anti-roll system 10 of the present embodiment travels through a bumpy road, the left and right wheels 12 may have a height difference due to the uneven road surface, and the forces between the suspension systems are not transmitted to each other because the two rod assemblies 110 are not in contact with each other. When the suspension control arm 40 moves up and down along with the wheel 12, the sensor 20 on the suspension control arm 40 senses the movement and transmits a signal to the controller 30, and the controller 30 receives the signal and instructs the driving module 120 to operate. If the wheel 12 moves upward relative to the other wheel 12, the controller 30 instructs the driving module 120 to apply a reverse torque to the suspension control arm 40 corresponding to the wheel 12, so as to move the wheel 12 downward.

Conversely, if the other side wheel 12 moves down, the controller 30 instructs the other set of drive modules 120 to impart a counter-rotating torque to the corresponding suspension control arm 40 to move the wheel 12 upward. The anti-roll bar device 100 of the present embodiment can achieve the anti-roll effect without mutual force transmission between the two suspension control arms 40, so that the vehicle has better riding ability.

On the other hand, in the present embodiment, when the vehicle is bent too far, the suspension control arms 40 of the wheels 12 are subjected to centrifugal force during bending, so that the inner suspension system is stretched and the outer suspension system is compressed, and at this time, the suspension control arms 40 generate a large height difference, so that the vehicle rolls. The sensor 20 senses the up and down displacement of the suspension control arm 40 and transmits a signal to the controller 30. After receiving the signal, the controller 30 instructs the two driving modules 120 to drive the two suspension control arms 40 to generate reverse torque to suppress roll, reduce height difference, and achieve the effect of preventing the vehicle from turning over due to too fast speed when the vehicle is in an over-curve state.

In recent years, miniature electric vehicles have become popular, and such miniature electric vehicles are characterized by small size, light weight and low cost. Most of the types of the electric vehicles run at a low speed, and therefore, the anti-roll bars are not arranged on most of the micro electric vehicles. Even if the existing linear anti-roll bar needs to be arranged, since europe is the main market of the existing micro electric vehicle, and the cities in europe have a lot of belgium roads, if the existing linear anti-roll bar is arranged on the micro electric vehicle, the situation of insufficient riding quality is caused. The wheel anti-roll system 10 of the present embodiment has fewer components, is small in size, light in weight, and does not directly transmit force between the two wheels 12, and the wheel anti-roll system 10 of the present embodiment employs an electronic signal control system. Therefore, the wheel anti-roll system 10 of the present embodiment is very suitable for being combined with a micro-electric vehicle, and can greatly improve the riding comfort and stability of such vehicle types. Of course, the wheel inclination prevention system 10 of the present embodiment can be applied to other vehicle types, and is not limited to the micro electric vehicle.

In summary, the wheel anti-roll system of the present invention can sense that one wheel moves upward relative to the other wheel through the sensor, and the controller instructs the driving module of the anti-roll bar device to operate according to the information sensed by the sensor. The driving module enables one of the rod assemblies to drive the corresponding suspension control arm to move downwards, and enables the other rod assembly to drive the corresponding suspension control arm to move upwards, so that the height difference between the two wheels is reduced. The wheel anti-tilt system and the anti-tilt rod device can stabilize the vehicle body through the adjustment, and reduce the uncomfortable feeling of people in the vehicle when the vehicle runs on a bumpy road. In addition, the design of the invention enables each driving module and the corresponding rod assembly to work together independently without interfering with the other group of driving modules and the corresponding rod assemblies, and the driving modules and the corresponding rod assemblies can be matched with each other through the adjustment of the controller, and the stress between the wheels is not influenced. In addition, the vehicle anti-roll system has few components, small volume and light weight, and is also very suitable for being used on a miniature electric vehicle.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. An anti-roll bar device suitable for being arranged on two suspension control arms pivoted on two wheels, which is characterized by comprising:

two rod assemblies, each of the rod assemblies including a first end and a second end, wherein the first ends of the two rod assemblies are adapted to be connected to the two suspension control arms, respectively; and

two driving modules respectively connected to the second ends of the two rod assemblies, wherein

When the two wheels generate a height difference, the two driving modules drive the two rod assemblies, so that one of the rod assemblies drives the corresponding suspension control arm to move downwards, and the other rod assembly drives the corresponding suspension control arm to move upwards, so as to reduce the height difference between the two wheels.

2. The anti roll bar device according to claim 1, wherein each of the bar assemblies includes a bent bar connected to the corresponding driving module and a universal bar movably connected to the bent bar, the universal bar being connected to the suspension control arm, the first end of each of the bar assemblies being an end of the universal bar connected to the corresponding suspension control arm, and the second end of each of the bar assemblies being an end of the bent bar connected to the driving module.

3. The anti roll bar device according to claim 2, wherein each of the bending bars includes a first section and a second section connected to the first section in a bending manner, the second end is located on the first section, and when each of the bar assemblies is driven, the second section of the bending bar is turned upward or downward around the first section to move the corresponding suspension control arm upward or downward.

4. The anti roll bar device according to claim 1, characterised in that each of the drive modules comprises a motor.

5. A wheel anti-roll system, comprising:

two wheels;

two suspension control arms respectively pivoted to the two wheels;

anti-roll bar device, comprising:

two rod assemblies, each of the rod assemblies including a first end and a second end, wherein the two first ends of the two rod assemblies are connected to the two suspension control arms, respectively; and

the two driving modules are respectively connected to the two second ends of the two rod assemblies;

the two sensors are respectively used for sensing the movement of the two wheels in the height direction;

a controller electrically connected to the two sensors and the two driving modules, wherein

When the two sensors sense that one of the wheels moves upwards relative to the other wheel to generate a height difference, the controller instructs the two driving modules to operate, so that one of the rod assemblies drives the corresponding suspension control arm to move downwards, and the other rod assembly drives the corresponding suspension control arm to move upwards, so as to reduce the height difference between the two wheels.

6. The wheel rollover prevention system according to claim 5, wherein the two sensors are respectively disposed on the two suspension control arms.

7. The wheel rollover prevention system according to claim 5, further comprising:

two shock absorbers configured on the two wheels, and the two sensors are respectively configured on the two shock absorbers.

8. The wheel rollover prevention system as recited in claim 5, wherein each of the rod assemblies includes a bent rod connected to the corresponding drive module and a universal rod movably connected to the bent rod, the universal rod being connected to the suspension control arm, the first end of each of the rod assemblies being an end of the universal rod connected to the corresponding suspension control arm, and the second end of each of the rod assemblies being an end of the bent rod connected to the drive module.

9. The wheel inclination prevention system of claim 8, wherein each of the bending rods comprises a first section and a second section connected to the first section in a bending manner, the second end is located on the first section, and when each of the rod assemblies is driven, the second section of the bending rod is turned upwards or downwards by taking the first section as an axis to drive the corresponding suspension control arm to move upwards or downwards.

10. The wheel rollover prevention system as recited in claim 5, wherein each of the drive modules includes a motor.