Automobile suspension system

Abstract

The utility model discloses an automobile suspension system. Comprising an angle module mounting plate, an upper control arm, a lower control arm, an air spring and electronic damper CDC assembly, a steering module and a steering knuckle. The top of the steering knuckle is directly connected with a steering module, the upper portion and the lower portion of the steering knuckle are connected with an angle module mounting plate through an upper control arm and a lower control arm respectively, an air spring and an electronic damper CDC assembly are further connected between the lower control arm and the angle module mounting plate, and the steering knuckle is fixedly mounted on a hub structure. And a tire rim and a brake are mounted on the hub structure. The suspension system supports four-wheel independent driving and four-wheel independent steering, is used for achieving the functions of in-situ steering, horizontal transverse moving and the like of the whole vehicle, and achieves ultra-small turning radius, large turning angle, reliable structure and performance and high expansibility during turning.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicles, in particular to a suspension and steering system of a new energy vehicle, and in particular to a vehicle suspension system. Background Art

[0002] When traditional suspension systems adapt to vehicles with different wheelbases, they often need to be designed to match the steering rod length and the Ackerman steering trapezoidal relationship. Due to the physical limitations of the suspension rods, the wheel turning angle often does not exceed 50°. In addition, each wheel cannot achieve independent steering, and the vehicle has a large turning radius, making it very difficult to turn or make U-turns in narrow areas.

[0003] With the development of wire control and electrification, EMB and wheel hub motors have emerged. How to reasonably design the suspension, braking, steering and drive systems to effectively integrate the wheel hub motor with the suspension and steering mechanisms; how to reduce the minimum turning radius of the vehicle so that the vehicle can easily turn and turn around in narrow streets; how to design the suspension guidance system, control the stiffness and damping of the suspension system, and improve the handling and comfort of the whole vehicle have become issues that need to be urgently addressed. Utility Model Content

[0004] In order to solve the problems existing in the background technology, the technical problem to be solved by the utility model is to propose a driving, braking, steering and suspension system and device.

[0005] The suspension of the utility model is used for efficient integration of driving, braking, steering and suspension systems, obtaining a larger interior space, achieving human-machine decoupling in terms of maneuverability and comfort, and greatly improving the response, accuracy and system safety of various functions such as driving and braking.

[0006] In order to realize the above-mentioned vehicle intelligent control system, the solution adopted by the utility model is as follows:

[0007] The utility model comprises an angle module mounting plate, an upper control arm, a lower control arm, an air spring and an electronic damper CDC assembly, a steering module, and a steering knuckle; the steering module is directly connected and installed on the top of the steering knuckle, the upper and lower parts of the steering knuckle are respectively connected via the upper control arm, the lower control arm and the angle module mounting plate, and the air spring and the electronic damper CDC assembly are also connected between the lower control arm and the angle module mounting plate, the steering knuckle is fixedly installed on a wheel hub structure, and a tire rim and a brake are installed on the wheel hub structure.

[0008] A flange is provided at the top of the steering knuckle, and the flange is directly and coaxially fixedly connected to the output end of the steering module; the steering module is built with a motor and rotates by electric drive.

[0009] The upper control arms are respectively connected to the upper rear control arms and the upper front control arms, and the upper rear control arms and the upper front control arms are respectively located at the rear side and the front side; a steering motor fixing seat is fixed on the top of the steering knuckle, and the front and rear sides of the steering motor fixing seat are respectively connected to the upper part of the corner module mounting plate through the upper front control arm and the upper rear control arm;

[0010] At the same time, the lower control arm is in a "human" shape, and the middle intersection of the "human" shape of the lower control arm is connected to the top of the corner module mounting plate after passing through the air spring and the electronic damper CDC assembly.

[0011] The "human"-shaped collective end of the lower control arm is hinged to the bottom of the steering knuckle, and its hinge axis is arranged in the vertical direction; the two ends of the "human"-shaped forked end of the lower control arm are respectively hinged to the bottom of the corner module mounting plate, and its hinge axis is arranged in the horizontal direction; the outer ends of the upper front control arm and the upper rear control arm are respectively hinged to the steering motor fixing seat, and their hinge axes are arranged in the horizontal direction; the inner ends of the upper front control arm and the upper rear control arm are respectively hinged to the bottom of the corner module mounting plate, and their hinge axes are arranged in the horizontal direction; the lower end of the air spring and electronic damper CDC assembly is hinged to the middle intersection of the "human" shape of the lower control arm, and its hinge axis is arranged in the horizontal direction.

[0012] The upper end of the air spring and electronic damper CDC assembly passes through the space between the upper front control arm and the upper rear control arm and is connected to the corner module mounting plate.

[0013] The air spring and electronic damper CDC assembly adopts a purely electronically controlled structure.

[0014] The main body of the corner module mounting plate is a vertical plate, the top of the vertical plate is horizontally bent and extended toward the wheel hub, the upper and lower parts of the vertical plate are respectively connected to the upper control arm and the lower control arm, and the part where the top of the vertical plate is horizontally bent and extended toward the wheel hub is connected to the air spring and electronic damper CDC assembly.

[0015] The wheel hub structure includes an electronic mechanical caliper EMB, a wheel hub motor assembly, a tire rim assembly, a brake disc, a wheel hub unit and a wheel hub motor fixing plate. The steering knuckle is fixedly mounted on the inner end face of the wheel hub motor fixing plate, the wheel hub motor assembly is mounted on the outer periphery of the outer end face of the wheel hub motor fixing plate, the wheel hub unit is mounted in the middle of the outer end face of the wheel hub motor fixing plate, the brake disc is fixedly mounted on the wheel hub unit, the electronic mechanical caliper EMB is mounted on the side of the wheel hub motor fixing plate, the wheel hub motor assembly is mounted on the outer periphery of the wheel hub unit, and the tire rim assembly is mounted outside the wheel hub motor assembly.

[0016] The electronic mechanical caliper EMB and the wheel hub motor assembly are both purely electronically controlled structures.

[0017] The utility model adopts a suspension system with a special structural design and a designed corner module. A vehicle using the corner module of the utility model can realize the functions of turning the whole vehicle on the spot, horizontal lateral movement, and oblique movement, and realize an ultra-small turning radius when turning; the air spring can realize dynamic adjustment of stiffness and damping, and can make the vehicle height adjustable. The dynamically matched stiffness and damping matching improves the maneuverability and comfort of the vehicle under different working conditions; EMB can avoid the layout of the brake lines of the traditional braking system, and reduce the difficulty of developing different chassis for the corner module. At the same time, EMB can reduce the response time of the braking force control of each wheel, and improve the safety of the vehicle.

[0018] The beneficial effects of the utility model are:

[0019] Electric vehicles now generally use a central motor, hydraulic brakes, rack and pinion steering, and coil spring dampers. The utility model decouples the braking, driving, steering and other systems, so that each wheel can be controlled individually, providing multiple controllable degrees of freedom, and supporting the adjustment of the braking force of the four wheels, driving force, wheel angle, and damping and stiffness of the suspension, thereby improving the upper limit of chassis maneuverability, stability, safety, and economy, and further improving the requirements of autonomous driving for precise control of the chassis trajectory.

[0020] Furthermore, the utility model integrates the braking, driving, steering and other systems in the same suspension system, thereby achieving a larger steering angle and a higher degree of freedom while also achieving a higher degree of integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is the structural explosion diagram of the utility model;

[0023] Figure 3 It is a schematic diagram of the upper front cross arm structure;

[0024] Figure 4 Schematic diagram of the upper rear swing arm structure;

[0025] Figure 5 Schematic diagram of the air spring structure;

[0026] Figure 6 It is a schematic diagram of the lower swing arm structure;

[0027] Figure 7 This is a schematic diagram of the corner module mounting plate structure;

[0028] Figure 8 It is a schematic diagram of the steering knuckle structure.

[0029] In the figure: 1, corner module mounting plate, 2, lower control arm, 3, air spring and electronic damper CDC assembly, 4, upper rear control arm, 5, upper front control arm, 6, electronic mechanical caliper EMB, 7, steering motor fixing seat, 8, steering module, 10 steering knuckle, 11, wheel hub motor assembly, 12, tire rim assembly, 13, brake disc, 14, wheel hub unit, 15, wheel hub motor fixing plate;

[0030] 101-upper front control arm mounting seat; 7102-lower swing arm front point mounting seat, 103-lower swing arm rear point mounting seat, 104-angle module mounting plate body, 105-upper rear control arm mounting seat, 106-air spring mounting seat;

[0031] 201-lower swing arm ball head, 202-lower swing arm body, 203-lower swing arm front bushing, 204-lower swing arm rear bushing;

[0032] 301-air spring, 302-air spring seat, 303-air spring mounting seat bushing;

[0033] 401-upper rear control arm body, 402-upper rear control arm inner bushing, 403-upper rear control arm outer bushing;

[0034] 501 - upper front control arm body, 502 - upper front control arm inner bushing, 503 - upper front control arm outer bushing. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1 and Figure 2 As shown, the automobile suspension system includes an angle module mounting plate 1, an upper control arm, a lower control arm 2, an air spring and electronic damper CDC assembly 3, a steering motor fixing seat 7, a steering module 8, a steering knuckle 10, a hub motor assembly 11, a tire rim assembly 12, a brake disc 13, a hub unit 14 and a hub motor fixing plate 15, etc.

[0037] The top of the steering knuckle 10 is directly connected to the steering module 8, and the upper and lower parts of the steering knuckle 10 are connected through the upper control arm, the lower control arm 2 and the corner module mounting plate 1 respectively. The corner module mounting plate 1 is fixed to the vehicle frame, and the corner module mounting plate is directly connected to the frame beam through bolts. At the same time, the air spring and electronic damper CDC assembly 3 are also connected between the lower control arm 2 and the corner module mounting plate 1. The steering knuckle 10 is fixedly installed on the wheel hub structure, and the tire rim, brake, etc. are installed on the wheel hub structure.

[0038] A flange is provided at the top of the steering knuckle 10, and the flange is directly and coaxially fixedly connected to the output end of the steering module 8; the steering module 8 has a built-in motor and only uses electric drive to rotate, which is a pure electric control structure.

[0039] The upper control arms are respectively located at the upper rear control arm 4 at the rear side of the vehicle and the upper front control arm 5 at the front side of the vehicle, and the upper rear control arm 4 and the upper front control arm 5 are respectively located at the rear side and the front side; a steering motor fixing seat 7 is fixed on the top of the steering knuckle 10, and the front and rear sides of the steering motor fixing seat 7 are respectively connected to the upper part of the corner module mounting plate 1 through the upper front control arm 5 and the upper rear control arm 4; at the same time, the lower control arm 2 is in a "human" shape, and the middle intersection of the "human" shape of the lower control arm 2 is connected to the top of the corner module mounting plate 1 through the air spring and electronic damper CDC assembly 3.

[0040] The "human"-shaped collective end of the lower control arm 2 is hinged to the bottom of the steering knuckle 10, and its hinge axis at the hinge is arranged in the vertical direction; both ends of the forked end of the "human" shape of the lower control arm 2 are respectively hinged to the bottom of the corner module mounting plate 1, and its hinge axis at the hinge is arranged along the horizontal vehicle front and rear direction; the outer ends of the upper front control arm 5 and the upper rear control arm 4 are respectively hinged to the two sides of the steering motor fixing seat 7, and their hinge axes at the hinge are arranged along the horizontal vehicle front and rear direction; the inner ends of the upper front control arm 5 and the upper rear control arm 4 are respectively hinged to the two sides of the bottom of the corner module mounting plate 1, and their hinge axes at the hinge are arranged along the horizontal vehicle front and rear direction; the lower end of the air spring and electronic damper CDC assembly 3 is hinged to the middle intersection of the "human" shape of the lower control arm 2, and its hinge axis at the hinge is arranged along the horizontal vehicle front and rear direction.

[0041] The upper end of the air spring and electronic damper CDC assembly 3 is fixedly connected to the corner module mounting plate 1. Specifically, the upper front control arm 5 and the upper rear control arm 4 are respectively located on both sides of the air spring and electronic damper CDC assembly 3, and there is a gap space. The upper end of the air spring and electronic damper CDC assembly 3 passes through the space between the upper front control arm 5 and the upper rear control arm 4 and is fixedly connected to the corner module mounting plate 1.

[0042] The air spring and electronic damper CDC assembly 3 adopts a pure electronic control structure, that is, it is controlled by wire only.

[0043] The main body of the corner module mounting plate 1 is a vertical plate, the top of the vertical plate is horizontally bent and extended toward the wheel hub, the upper and lower parts of the vertical plate are respectively connected to the upper control arm and the lower control arm 2, and the part where the top of the vertical plate is horizontally bent and extended toward the wheel hub is connected to the air spring and electronic damper CDC assembly 3.

[0044] like Figure 8 As shown, the steering knuckle 10 is formed as an integral structure by stamping.

[0045] like Figure 1 and Figure 2 As shown, the wheel hub structure includes an electronic mechanical caliper EMB6, a hub motor assembly 11, a tire rim assembly 12, a brake disc 13, a hub unit 14 and a hub motor fixing plate 15. The electronic mechanical caliper EMB6 and the brake disc 13 constitute a brake, the steering knuckle 10 is fixedly mounted on the inner end face of the hub motor fixing plate 15, the hub motor assembly 11 is mounted on the periphery of the outer end face of the hub motor fixing plate 15, the hub unit 14 is mounted in the middle of the outer end face of the hub motor fixing plate 15, the brake disc 13 is fixedly mounted on the hub unit 14, the electronic mechanical caliper EMB6 is mounted on the outer peripheral side of the hub motor fixing plate 15, the hub motor assembly 11 is mounted on the outer periphery of the hub unit 14, and the tire rim assembly 12 is mounted outside the hub motor assembly 11.

[0046] The bolts on the wheel hub unit 14 pass through the brake disc 13, the wheel hub motor assembly 11, the tire rim assembly 12, and are fixed to the wheel hub nut on the outside of the tire rim assembly 12. The electronic mechanical caliper EMB6 is fixed to the wheel hub motor fixing plate 15 by bolts. The aforementioned wheel hub and wheel assembly are fixed to the wheel hub motor fixing plate 15 by bolts, and the entire assembly is fixed to the steering knuckle 10 by bolts; the corner module mounting plate 1 is fixed to the body frame by bolts.

[0047] The electronic mechanical caliper EMB6 and the wheel hub motor assembly 11 are both purely electronically controlled structures, that is, they are controlled by wire only.

[0048] In specific implementation, Figure 3 As shown, the upper front control arm 5 includes an upper front control arm body 501, an upper front control arm inner bushing 502 and an upper front control arm outer bushing 503. Horizontal axial through holes are provided at both ends of the upper front control arm body 501, and the upper front control arm inner bushing 502 and the upper front control arm outer bushing 503 for hinged connection are respectively installed in the two through holes.

[0049] like Figure 4 As shown, the upper rear control arm 4 includes an upper rear control arm body 401, an upper rear control arm inner bushing 402 and an upper rear control arm outer bushing 403. Horizontal axial through holes are provided at both ends of the upper rear control arm body 401, and the upper rear control arm inner bushing 402 and the upper rear control arm outer bushing 403 for hinged connection are respectively installed in the two through holes.

[0050] like Figure 5 As shown, the air spring and electronic damper CDC assembly 3 includes an air spring 301, an air spring seat 302, and an air spring mounting seat bushing 303. The air spring 301 is installed on the air spring seat 302. A horizontal axial through hole is provided at the bottom of the air spring seat 302, and an air spring mounting seat bushing 303 for hinged connection is installed in the through hole.

[0051] like Figure 6As shown, the lower control arm 2 includes a lower swing arm ball head 201, a lower swing arm body 202, a lower swing arm front bushing 203, and a lower swing arm rear bushing 204; the lower swing arm body 202 is in a "human" shape, and the collective end of the "human" structure is provided with a vertical axial through hole, in which the lower swing arm ball head 201 for hinged connection is installed, and both ends of the bifurcated end of the "human" structure are provided with horizontal axial through holes, in which the lower swing arm front bushing 203 and the lower swing arm rear bushing 204 for hinged connection are installed respectively. And a hinge seat structure is provided at the middle intersection of the "human" structure, which is used for hinged connection with the air spring and the electronic damper CDC assembly 3.

[0052] like Figure 7 As shown, the corner module mounting plate 1 includes a corner module mounting plate body 104, which is formed by the top of a vertical plate being bent horizontally and extended toward the wheel hub, and the bottom of the corner module mounting plate body 104 is provided with a lower control arm front point mounting seat 102 and a lower control arm rear point mounting seat 103 respectively used to be hinged to the two forked ends of the lower control arm 2, and the upper front control arm mounting seat 101 and the upper rear control arm mounting seat 105 respectively used to be hinged to the upper front control arm 5 and the upper rear control arm 4 are provided in the upper and middle part of the corner module mounting plate body 104, and the dome formed by the top of the corner module mounting plate body 104 being bent horizontally and extended toward the wheel hub is provided with an air spring mounting seat 106 connected and installed with the electronic mechanical caliper EMB6.

[0053] Specifically, one end of the upper front control arm 5 and the upper rear control arm 4 is hinged to the corner module mounting plate body 104 through the upper front control arm mounting seat 101 and the upper rear control arm mounting seat 105. The upper front control arm mounting seat 101 and the upper rear control arm mounting seat 105 are fixed to the corner module mounting plate body 104 through bolts. The other end of the upper front control arm 5 and the upper rear control arm 4 is hinged to the steering motor fixing seat 7.

[0054] The outer shell of the steering module 8 is fixedly connected to the steering motor fixing seat 7 by bolts. The steering module 8 has an output shaft fixedly connected to the steering knuckle 10 by bolts. One end of the lower control arm 2 is connected to the steering knuckle 10 by a ball joint. The other end of the lower control arm 2 is hinged to the front point mounting seat 102 of the lower swing arm and the rear point mounting seat 103 of the lower swing arm. The front point mounting seat 102 of the lower swing arm and the rear point mounting seat 103 of the lower swing arm are fixedly connected to the corner module mounting plate body 104 by bolts.

[0055] The steering knuckle 10 rotates around the axis formed by the axis of the output shaft and the center of the ball joint of the lower control arm 2. The air spring mounting seat 106 is fixedly connected to the air spring and electronic damper CDC assembly 3 by bolts. One end of the air spring and electronic damper CDC assembly 3 is hinged to the lower control arm 2, and the other end is connected to the air spring mounting seat 106.

[0056] Under the structural design of the utility model, the four wheels of the vehicle chassis are all arranged with a suspension system, which can work in the following different modes.

[0057] The above specific implementation modes are used to explain the present invention rather than to limit the present invention. Any modification and change made to the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

[0058] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. An automobile suspension system, characterized in that: The invention comprises an angle module mounting plate (1), an upper control arm, a lower control arm (2), an air spring and an electronic damper CDC assembly (3), a steering module (8), and a steering knuckle (10); the steering module (8) is directly connected to the top of the steering knuckle (10), the upper and lower parts of the steering knuckle (10) are respectively connected via the upper control arm, the lower control arm (2) and the angle module mounting plate (1), and the air spring and the electronic damper CDC assembly (3) are also connected between the lower control arm (2) and the angle module mounting plate (1); the steering knuckle (10) is fixedly mounted on a wheel hub structure, and a tire rim and a brake are mounted on the wheel hub structure.

2. The vehicle suspension system according to claim 1, characterized in that: A flange is provided at the top of the steering knuckle (10), and the flange is directly and coaxially fixedly connected to the output end of the steering module (8); The steering module (8) has a built-in motor and is electrically driven to rotate.

3. The automobile suspension system according to claim 1, characterized in that: The upper control arm is respectively provided with an upper rear control arm (4) and an upper front control arm (5), and the upper rear control arm (4) and the upper front control arm (5) are respectively located at the rear side and the front side; a steering motor fixing seat (7) is fixed on the top of the steering knuckle (10), and the front and rear sides of the steering motor fixing seat (7) are respectively connected to the upper part of the corner module mounting plate (1) via the upper front control arm (5) and the upper rear control arm (4); At the same time, the lower control arm (2) is in the shape of a human figure, and the middle intersection of the human figure of the lower control arm (2) is connected to the top of the corner module mounting plate (1) through the air spring and electronic damper CDC assembly (3).

4. The vehicle suspension system according to claim 3, characterized in that: The "human" shaped collective end of the lower control arm (2) is hinged to the bottom of the steering knuckle (10), and its hinge axis is arranged in the vertical direction; the two ends of the "human" shaped bifurcated end of the lower control arm (2) are respectively hinged to the bottom of the corner module mounting plate (1), and its hinge axis is arranged in the horizontal direction; the outer ends of the upper front control arm (5) and the upper rear control arm (4) are respectively hinged to the steering motor fixing seat (7), and their hinge axes are arranged in the horizontal direction; the inner ends of the upper front control arm (5) and the upper rear control arm (4) are respectively hinged to the bottom of the corner module mounting plate (1), and their hinge axes are arranged in the horizontal direction; the lower end of the air spring and electronic damper CDC assembly (3) is hinged to the middle intersection of the "human" shape of the lower control arm (2), and its hinge axis is arranged in the horizontal direction.

5. The automobile suspension system according to claim 1, characterized in that: The upper end of the air spring and electronic damper CDC assembly (3) passes through the space between the upper front control arm (5) and the upper rear control arm (4) and is connected to the corner module mounting plate (1).

6. An automobile suspension system according to claim 1 or 5, characterized in that: The air spring and electronic damper CDC assembly (3) adopts a purely electronically controlled structure.

7. The vehicle suspension system according to claim 1, characterized in that: The main body of the corner module mounting plate (1) is a vertical plate, the top of the vertical plate is bent and extended horizontally toward the wheel hub, the upper and lower parts of the vertical plate are respectively connected to the upper control arm and the lower control arm (2), and the part of the top of the vertical plate that is bent and extended horizontally toward the wheel hub is connected to the air spring and electronic damper CDC assembly (3).

8. The automobile suspension system according to claim 1, characterized in that: The wheel hub structure comprises an electronic mechanical caliper EMB (6), a wheel hub motor assembly (11), a tire rim assembly (12), a brake disc (13), a wheel hub unit (14) and a wheel hub motor fixing plate (15); the steering knuckle (10) is fixedly mounted on the inner end surface of the wheel hub motor fixing plate (15); the wheel hub motor assembly (11) is mounted on the outer periphery of the outer end surface of the wheel hub motor fixing plate (15); the wheel hub unit (14) is mounted in the middle of the outer end surface of the wheel hub motor fixing plate (15); the brake disc (13) is fixedly mounted on the wheel hub unit (14); the electronic mechanical caliper EMB (6) is mounted on the side of the wheel hub motor fixing plate (15); the wheel hub motor assembly (11) is mounted on the outer periphery of the wheel hub unit (14); and the tire rim assembly (12) is sleeved outside the wheel hub motor assembly (11).

9. The automobile suspension system according to claim 8, characterized in that: The electronic mechanical caliper EMB (6) and the wheel hub motor assembly (11) are both purely electrically controlled structures.

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