Steering and suspension integrated electric vehicle corner module

Abstract

The invention relates to vehicle equipment, in particular to a steering and suspension integrated electric vehicle angle module which comprises a driving system, a braking system, a steering system, a traveling system and a suspension system, the driving system comprises a hub motor and a hub motor driver, and the braking system comprises a braking module and a braking resistor. The brake module controls the wheel hub motor to brake, the steering system comprises a steering motor, a steering motor driver, a steering speed reducing mechanism and a steering knuckle, the steering motor rotates to drive the steering knuckle to rotate, the wheel hub motor is connected to the steering knuckle, and the steering motor driver drives the steering speed reducing mechanism to rotate. The suspension system comprises a shock absorber, a spring, a main pin cylinder, a sleeve, a shock absorber upper mounting seat and a shock absorber lower mounting seat, and an output shaft of the steering speed reducing mechanism is connected with the shock absorber lower mounting seat and the main pin cylinder. The steering and suspension integrated electric vehicle angle module is higher in integration level, simpler in structure and higher in flexibility.

Description

Technical Field

[0001] The invention relates to vehicle equipment, in particular to an electric vehicle corner module with integrated steering and suspension. Background Art

[0002] With the development of electric vehicle technology, vehicles can be driven by wheel hub motors, which reduces the mechanical structure of the transmission system, making it possible to integrate the wheel driving, driving, steering, braking, and suspension functions into an independent electric vehicle corner module. At present, some automobile companies and research institutions have conducted some exploration and research on electric vehicle corner modules. However, the existing electric vehicle corner modules still have defects such as low integration, complex structure, and large size. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an electric vehicle corner module with integrated steering and suspension, which has higher integration, simpler structure and higher flexibility.

[0004] In order to solve the above technical problems, this application provides the following technical solutions:

[0005] The present invention discloses an electric vehicle corner module with integrated steering and suspension, comprising a driving system, a braking system, a steering system, a traveling system, and a suspension system.

[0006] The travel system comprises a tire and a rim, wherein the tire is connected to the rim.

[0007] The drive system includes a hub motor and a hub motor driver, wherein the hub motor driver is connected to the hub motor, and the hub motor driver controls the hub motor to rotate forward or reversely, and the wheel rim is connected to the output shaft of the hub motor.

[0008] The braking system includes a braking module and a braking resistor. The braking module is connected to the wheel hub motor. The braking module controls the wheel hub motor to brake the wheel hub motor.

[0009] The steering system comprises a steering motor, a steering motor driver, a steering reduction mechanism, and a steering knuckle. The steering motor driver is connected to the steering motor. The output end of the steering motor is connected to the input end of the steering reduction mechanism. The output end of the steering reduction mechanism is connected to the steering knuckle. The steering motor driver controls the steering motor to rotate or stop. The steering motor rotates to drive the steering knuckle to rotate through the steering reduction mechanism. The wheel hub motor is connected to the steering knuckle.

[0010] The suspension system includes a shock absorber, a spring, a kingpin barrel, a sleeve, an upper mounting seat of the shock absorber, and a lower mounting seat of the shock absorber. The lower end of the sleeve is open, and the upper end of the sleeve is connected to the upper mounting seat of the shock absorber. The upper end of the kingpin barrel is open, and the lower end of the kingpin barrel is connected to the lower mounting seat of the shock absorber. The kingpin barrel is arranged in the sleeve, and the two ends of the shock absorber are respectively connected to the upper mounting seat of the shock absorber and the lower mounting seat of the shock absorber. The shock absorber is arranged in the kingpin barrel, and the spring is sleeved on the shock absorber, and the two ends of the spring are respectively connected to the two ends of the telescopic component of the shock absorber. The fixed end of the steering deceleration mechanism is connected to the lower mounting seat of the shock absorber and the kingpin barrel.

[0011] Furthermore, the fixed end of the steering speed reduction mechanism is connected to the lower mounting seat of the shock absorber, and the rotating end of the steering speed reduction mechanism is connected to the steering knuckle.

[0012] Furthermore, the braking system also includes a braking resistor, which is connected to the braking module and is used to absorb the electrical energy generated by the hub motor during braking.

[0013] Furthermore, it also includes a dust cover, which is made of a retractable material, and is sleeved on the kingpin barrel. Two ends of the dust cover are respectively connected to the lower mounting seat of the shock absorber and the lower edge of the sleeve.

[0014] Furthermore, the dust cover is made of a bellows.

[0015] Furthermore, a limiting device is provided between the sleeve and the master pin cylinder, and the limiting device limits the extreme position of the up and down movement of the shock absorber.

[0016] Furthermore, the limiting device includes a limiting pin and a limiting groove, the limiting groove is arranged on the main pin barrel, and a limiting pin hole is arranged on the side wall of the sleeve. The limiting pin passes through the limiting pin hole and extends into the limiting groove of the main pin barrel. When the main pin barrel moves upward to the extreme position, the lower edge of the limiting groove is blocked by the limiting pin, and when the main pin barrel moves downward to the extreme position, the upper edge of the limiting groove is blocked by the limiting pin.

[0017] Furthermore, the inner wall cross-section of the sleeve is non-circular, the outer wall cross-section of the main pin barrel is non-circular, a partial area of ​​the outer wall of the main pin barrel contacts the inner wall of the sleeve, and the main pin barrel is suitable for axially moving up and down relative to the sleeve without relative rotation.

[0018] Furthermore, it also includes a friction-reducing pad, which is connected to the position where the outer wall of the main pin cylinder contacts the sleeve.

[0019] Furthermore, it also includes a pair of sleeve fixing brackets, each of which is an L-shaped plate, one side of which is connected to the outer wall of the sleeve, and the other side of which is provided with multiple connecting holes, and the other side of the sleeve fixing bracket is used to be connected to the vehicle body.

[0020] Compared with the prior art, the electric vehicle corner module with integrated steering and suspension of the present invention has at least the following beneficial effects:

[0021] The electric vehicle corner module with integrated steering and suspension of the present invention has a steering motor of the steering system driving the steering knuckle to rotate through a steering reduction mechanism, and the wheel hub motor of the driving system is connected to the steering knuckle. The rotation of the steering knuckle drives the wheel hub motor to rotate to realize vehicle steering. The fixed end of the steering reduction mechanism is connected to the lower mounting seat of the shock absorber system and the kingpin barrel. The wheel hub motor of the driving system rotates forward or reversely, driving the rim and tire of the traveling system to rotate forward or reversely. Therefore, the driving system, the braking system, the steering system, the traveling system, and the suspension system are integrated into one, with higher integration, simpler structure, higher flexibility, and can The vehicle's maneuverability and off-road capability are effectively improved, and the vehicle is applicable to various types such as special vehicles and electric vehicles. Moreover, since each tire is controlled by a separate steering system, drive system, and brake system, the steering system and the drive system are integrated into one, and the steering and rotation directions of the left and right wheels of the same axle can be decoupled. When the electric vehicle corner module with integrated steering and suspension of the present invention is installed on the vehicle body, the vehicle can realize front and rear directions and left and right directions. For four-wheel vehicles, the left and right wheels of the same axle can turn inward and downward directions, and the opposite wheel rotation directions can realize the vehicle's on-the-spot steering, which is more flexible.

[0022] The steering and suspension integrated electric vehicle corner module of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the system composition of the electric vehicle corner module with integrated steering and suspension according to the present invention;

[0024] Figure 2 The structural diagram of the electric vehicle corner module with integrated steering and suspension of the present invention;

[0025] Figure 3 A cross-sectional view of an electric vehicle corner module with integrated steering and suspension according to the present invention;

[0026] Figure 4 The figure is a schematic diagram of the driving and steering modes of a vehicle equipped with the electric vehicle corner module integrating steering and suspension of the present invention. DETAILED DESCRIPTION

[0027] like Figure 1 , Figure 2, Figure 3 As shown, the electric vehicle corner module with integrated steering and suspension of the present invention includes a driving system 01, a braking system 02, a steering system 03, a traveling system 04, and a suspension system 05.

[0028] The driving system 04 includes a tire 41 and a rim 42. The tire 41 is connected to the rim 42.

[0029] The drive system 01 includes a hub motor 11 and a hub motor driver 12. The hub motor driver 12 is connected to the hub motor 11 through a wire. The rim 42 is connected to the output shaft of the hub motor 11. The hub motor driver 12 sends a forward or reverse command to the hub motor 11 to control the hub motor 11 to rotate forward or reverse, thereby driving the rim 42 and the tire 41 to rotate forward or reverse, so as to realize the forward or reverse movement of the vehicle. Specifically, the hub motor 11 includes a fixed end, and the hub motor 11 has a brake inside with a braking function.

[0030] The brake system 02 includes a brake module 21 and a brake resistor 22. The brake module 21 is connected to the wheel hub motor 11. The brake module 21 controls the wheel hub motor 11 to brake the wheel hub motor 11, thereby stopping the wheel rim 42 and the tire 41 from rotating and stopping the vehicle.

[0031] The steering system 03 includes a steering motor 31, a steering motor driver 32, a steering reduction mechanism 33, and a steering knuckle 34. The steering motor driver 32 is connected to the steering motor 31. The output end of the steering motor 31 is connected to the input end of the steering reduction mechanism 33. The output end of the steering reduction mechanism 33 is connected to the steering knuckle 34. The steering motor driver 32 controls the steering motor 31 to rotate or stop. The steering motor 31 drives the steering knuckle 34 to rotate through the steering reduction mechanism 33. The wheel hub motor 11 is connected to the steering knuckle 34. The rotation of the steering knuckle 34 drives the wheel hub motor 11 to rotate, thereby realizing vehicle steering. Specifically, a wheel hub motor mounting seat is provided on the steering knuckle 34. The fixed end of the wheel hub motor 11 is connected to the wheel hub motor mounting seat.

[0032] The suspension system 05 includes a shock absorber 50, a spring 51, a kingpin barrel 52, a sleeve 53, an upper shock absorber mounting seat 54, and a lower shock absorber mounting seat 55. The lower end of the sleeve 53 is open, and the upper end of the sleeve 53 is connected to the upper shock absorber mounting seat 54. The upper end of the kingpin barrel 52 is open, and the lower end of the kingpin barrel 52 is connected to the lower shock absorber mounting seat 55. The kingpin barrel 52 is arranged in the sleeve 53, and the two ends of the shock absorber 50 are respectively connected to the upper shock absorber mounting seat 54 and the lower shock absorber mounting seat 55. The shock absorber 50 is arranged in the kingpin barrel 52. The spring 51 is sleeved on the shock absorber 50, and the two ends of the spring 51 are respectively connected to the two ends of the telescopic component of the shock absorber 50. The output shaft of the steering reduction mechanism 33 is connected to the lower shock absorber mounting seat 55, and the spring 51 is a coil spring. The suspension system 05 is used to connect the wheels and body of the vehicle, and is used to reduce the impact vibration of the vehicle body caused by uneven road surface. When the wheel jumps, the spring 51 is compressed, and the vibration transmitted from the road surface is buffered by the spring 51. The shock absorber 50 cavity is filled with damping fluid. When the shock absorber 50 is affected by the uneven road surface and produces expansion and contraction movement, friction is generated between the damping fluid and the pores in its cavity and the molecules of the damping fluid, generating a damping force. When the pressure on the shock absorber is greater than the tension of the spring 51, the shock absorber 50 contracts and compresses the spring 51 at the same time. When the tension of the spring 51 is greater than the pressure on the shock absorber 50, the shock absorber 50 extends.

[0033] The electric vehicle corner module with integrated steering and suspension of the present invention has a steering motor 31 of the steering system 03 that drives the steering knuckle 34 to rotate, and the wheel hub motor 11 of the driving system 01 is connected to the steering knuckle 34. The rotation of the steering knuckle 34 drives the wheel hub motor 11 to rotate, so as to realize the steering of the vehicle. The fixed end of the steering reduction mechanism 33 is connected to the shock absorber lower mounting seat 55 and the kingpin barrel 52 of the shock absorption system 05. The wheel hub motor 11 of the driving system 01 rotates forward or reversely, driving the rim 42 and the tire 41 of the traveling system 04 to rotate forward or reversely. Therefore, the driving system 01, the braking system 02, the steering system 03, the traveling system 04, and the suspension system 05 are integrated into one, with higher integration, simpler structure, and higher flexibility, and can effectively improve the vehicle's maneuverability and off-road capability. It is suitable for many types of vehicles such as special vehicles and electric vehicles, and, as Figure 4 As shown, since each tire is controlled by a separate steering system 03, drive system 01, and brake system 02, the steering and rotation directions of the left and right wheels of the same axle can be decoupled. When the electric vehicle corner module with integrated steering and suspension of the present invention is installed on the body of the vehicle, the vehicle can travel in the front and rear directions and in the left and right directions. For four-wheeled vehicles, the left and right wheels of the same axle can turn inward and downward and the opposite wheel rotation directions can realize on-the-spot steering of the vehicle, which is more flexible.

[0034] Optionally, the fixed end of the steering reduction mechanism 33 is fixedly connected to the shock absorber lower mounting seat 55, and the rotating end of the steering reduction mechanism 33 is connected to the steering knuckle 34. The steering driving force generated by the steering motor 31 is transmitted to the steering knuckle fixed at the output end of the steering reduction mechanism after the speed reduction and torque increase of the steering reduction mechanism 33, thereby driving the steering knuckle 34 to rotate.

[0035] Optionally, the braking system 02 further includes a braking resistor 22, which is electrically connected to the braking module 21, and the braking resistor 22 absorbs the electric energy generated when the wheel hub motor 11 is braked. Specifically, one end of the braking module 21 is connected to the wheel hub motor 11 through a wire, and the other end is connected to the braking resistor 22 through a wire. During braking, the wheel hub motor 11 is controlled by the braking module 21 to form a reverse electromotive force, the wheel hub motor 11 is braked, and the electric energy generated by the wheel hub motor 11 is absorbed by the braking resistor 22, converted into heat energy and dissipated.

[0036] Optionally, a dust cover 58 is also included. The dust cover 58 is made of a retractable material. The dust cover 58 is sleeved on the main pin barrel 52. The two ends of the dust cover 58 are respectively connected to the lower mounting seat 55 of the shock absorber and the lower edge of the sleeve 53 to prevent debris from entering between the main pin barrel 52 and the inner wall of the sleeve 53. The dust cover 58 is made of a bellows or other retractable materials.

[0037] Optionally, a limit device is provided between the sleeve 53 and the main pin cylinder 52 , and the limit device is provided according to the limit position of the extension and retraction of the shock absorber 50 , so as to limit the limit position of the up and down movement of the shock absorber 50 .

[0038] Optionally, the limiting device includes a limiting pin 56 and a limiting groove, the limiting groove is provided on the main pin barrel 52, a limiting pin hole is provided on the side wall of the sleeve 53, the limiting pin 56 passes through the limiting pin hole and extends into the limiting groove of the main pin barrel 52, when the main pin barrel 52 moves upward to the limit position, the lower edge of the limiting groove is blocked by the limiting pin 56, when the main pin barrel 52 moves downward to the limit position, the upper edge of the limiting groove is blocked by the limiting pin 56. Specifically, the limiting groove is a through hole or a groove provided on the side wall of the main pin barrel 52.

[0039] Optionally, the inner wall cross-section of the sleeve 53 is non-circular, the outer wall cross-section of the main pin barrel 52 is non-circular, a partial area of ​​the outer wall of the main pin barrel 52 contacts the inner wall of the sleeve 53, and the main pin barrel 52 is suitable for axially moving up and down relative to the sleeve 53, ensuring that the main pin barrel 52 can only move up and down axially relative to the sleeve 53 and cannot rotate relative to the axis.

[0040] Optionally, a friction-reducing pad is further included, and the friction-reducing pad is connected to the position where the outer wall of the main pin cylinder 52 contacts the sleeve 53.

[0041] Optionally, a pair of sleeve fixing brackets 59 are further included. The sleeve fixing brackets 59 are L-shaped plates. One side of the sleeve fixing bracket 59 is connected to the outer wall of the sleeve 53. A plurality of connecting holes are provided on the other side of the sleeve fixing bracket 59. The other side of the sleeve fixing bracket 59 is used to be connected to the vehicle body. Specifically, the sleeve fixing brackets 59 are arranged in pairs, and the electric vehicle corner module integrating steering and suspension of the present invention is installed on the vehicle body through the sleeve fixing brackets 59.

[0042] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An electric vehicle corner module with integrated steering and suspension, characterized in that: It includes a driving system (01), a braking system (02), a steering system (03), a traveling system (04), and a suspension system (05). The travel system (04) comprises a tire (41) and a rim (42), wherein the tire (41) is connected to the rim (42). The drive system (01) comprises a wheel hub motor (11) and a wheel hub motor driver (12), wherein the wheel hub motor driver (12) is connected to the wheel hub motor (11), and the wheel hub motor driver (12) controls the forward or reverse rotation of the wheel hub motor (11), and the wheel rim (42) is connected to the output shaft of the wheel hub motor (11). The braking system (02) comprises a braking module (21) and a braking resistor (22); the braking module (21) is connected to the wheel hub motor (11); the braking module (21) controls the wheel hub motor (11) to brake the wheel hub motor (11); The steering system (03) comprises a steering motor (31), a steering motor driver (32), a steering speed reduction mechanism (33), and a steering knuckle (34); the steering motor driver (32) is connected to the steering motor (31); the output end of the steering motor (31) is connected to the input end of the steering speed reduction mechanism (33); the output end of the steering speed reduction mechanism (33) is connected to the steering knuckle (34); the steering motor driver (32) controls the steering motor (31) to rotate or stop; the steering motor (31) rotates to drive the steering knuckle (34) to rotate through the steering speed reduction mechanism (33); the wheel hub motor (11) is connected to the steering knuckle (34); The suspension system (05) comprises a shock absorber (50), a spring (51), a kingpin barrel (52), a sleeve (53), a shock absorber upper mounting seat (54), and a shock absorber lower mounting seat (55); the sleeve (53) has an open lower end, and the upper end of the sleeve (53) is connected to the shock absorber upper mounting seat (54); the kingpin barrel (52) has an open upper end, and the lower end of the kingpin barrel (52) is connected to the shock absorber lower mounting seat (55); the kingpin barrel (52) is arranged on the The two ends of the shock absorber (50) are respectively connected to the upper mounting seat (54) and the lower mounting seat (55) of the shock absorber in the sleeve (53); the shock absorber (50) is arranged in the kingpin cylinder (52); the spring (51) is sleeved on the shock absorber (50); the two ends of the spring (51) are respectively connected to the two ends of the telescopic component of the shock absorber (50); and the fixed end of the steering deceleration mechanism (33) is connected to the lower mounting seat (55).

2. The electric vehicle corner module with integrated steering and suspension according to claim 1, characterized in that: The fixed end of the steering deceleration mechanism (33) is connected to the shock absorber lower mounting seat (55), and the rotating end of the steering deceleration mechanism (33) is connected to the steering knuckle (34).

3. The electric vehicle corner module with integrated steering and suspension according to claim 2, characterized in that: The braking system (02) further comprises a braking resistor (22), wherein the braking resistor (22) is connected to the braking module (21), and the braking resistor (22) is used to absorb the electric energy generated by the hub motor (11) during braking.

4. The electric vehicle corner module with integrated steering and suspension according to claim 3, characterized in that: It also includes a dust cover (58), which is made of a retractable material. The dust cover (58) is sleeved on the kingpin barrel (52), and the two ends of the dust cover (58) are respectively connected to the lower mounting seat (55) of the shock absorber and the lower edge of the sleeve (53).

5. The electric vehicle corner module with integrated steering and suspension according to claim 4, characterized in that: The dust cover (58) is made of a bellows.

6. The electric vehicle corner module with integrated steering and suspension according to claim 5, characterized in that: A limit device is provided between the sleeve (53) and the master pin cylinder (52), and the limit device limits the extreme position of the up and down movement of the shock absorber (50).

7. The electric vehicle corner module with integrated steering and suspension according to claim 6, characterized in that: The limiting device comprises a limiting pin (56) and a limiting groove, wherein the limiting groove is arranged on the main pin cylinder (52), and a limiting pin hole is arranged on the side wall of the sleeve (53). The limiting pin (56) passes through the limiting pin hole and extends into the limiting groove of the main pin cylinder (52). When the main pin cylinder (52) moves upward to the limit position, the lower edge of the limiting groove is blocked by the limiting pin (56), and when the main pin cylinder (52) moves downward to the limit position, the upper edge of the limiting groove is blocked by the limiting pin (56).

8. The electric vehicle corner module with integrated steering and suspension according to claim 7, characterized in that: The inner wall cross section of the sleeve (53) is non-circular, the outer wall cross section of the main pin cylinder (52) is non-circular, a portion of the outer wall of the main pin cylinder (52) contacts the inner wall of the sleeve (53), and the main pin cylinder (52) is suitable for axially moving up and down relative to the sleeve (53) without relative rotation.

9. The electric vehicle corner module with integrated steering and suspension according to claim 8, characterized in that: It also includes a friction-reducing pad, which is connected to the position where the outer wall of the main pin cylinder (52) contacts the sleeve (53).

10. The electric vehicle corner module with integrated steering and suspension according to claim 9, characterized in that: It also includes a pair of sleeve fixing brackets (59), wherein the sleeve fixing brackets (59) are L-shaped plates, one side of the sleeve fixing brackets (59) is connected to the outer wall of the sleeve (53), and the other side of the sleeve fixing brackets (59) is provided with a plurality of connection holes, and the other side of the sleeve fixing brackets (59) is used to be connected to the vehicle body.

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