CN216708949U - Suspension control system and vehicle - Google Patents

Abstract

The utility model discloses a suspension control system and a vehicle, wherein the suspension control system comprises: four groups of air springs; the central control cylinder comprises a cylinder body and a moving piece, and the moving piece is arranged in the cylinder body and is matched with the cylinder body to limit a first chamber, a second chamber and a third chamber; the switching module has a first state and a second state, and in the first state, the four groups of air springs are not communicated with the central control cylinder; in a second state, one of the front left air spring and the rear right air spring is in communication with the first chamber, the other of the front left air spring and the rear right air spring is in communication with the second chamber, one of the front right air spring and the rear left air spring is in communication with the third chamber, and the other of the front right air spring and the rear left air spring is in communication with the fourth chamber. Therefore, the four groups of air springs can adapt to the running working condition of the vehicle by switching the switching module between the first state and the second state, the running smoothness of the vehicle can be improved, and the posture of the vehicle is stabilized.

Description

Suspension control system and vehicle

Technical Field

The utility model relates to the field of vehicles, in particular to a suspension control system and a vehicle with the same.

Background

In the related technology, a vehicle is provided with a suspension control system, the suspension control system comprises a left front air spring, a right rear air spring, a right front air spring and a left rear air spring, the left front air spring, the right rear air spring, the right front air spring and the left rear air spring are independently arranged and cannot be mutually communicated, and the four air springs cannot be well adapted to the running working conditions of the vehicle, so that the running smoothness of the vehicle is poor, and the vehicle cannot run stably under certain working conditions.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a suspension control system which can enable four groups of air springs to adapt to the running condition of a vehicle, and can improve the running smoothness of the vehicle so as to stabilize the posture of the vehicle.

The utility model further provides a vehicle.

A suspension control system according to the present invention includes: the four groups of air springs are suitable for being connected between the wheels and the vehicle body and comprise a left front air spring, a left rear air spring, a right front air spring and a right rear air spring;

the central control cylinder comprises a cylinder body and a moving member, the moving member is movably arranged in the cylinder body and matched with the cylinder body to define a first chamber, a second chamber, a third chamber and a fourth chamber, the first chamber, the second chamber, the third chamber and the fourth chamber are sequentially arranged in the moving direction of the moving member, the first chamber and the second chamber are distributed on one side of a middle contact part of the moving member, the third chamber and the fourth chamber are distributed on the other side of the middle contact part, and the middle contact part is in moving fit with the inner wall of the cylinder body;

the switching module is used for selectively communicating the central control cylinder between an air source and the four groups of air springs and has a first state and a second state, wherein in the first state, the four groups of air springs are not communicated with the central control cylinder, and the air source is directly communicated with the four groups of air springs; in the second state, one of the left front air spring and the right rear air spring is communicated with an air source through the first chamber, the other of the left front air spring and the right rear air spring is communicated with the air source through the second chamber, one of the right front air spring and the left rear air spring is communicated with the air source through the third chamber, and the other of the right front air spring and the left rear air spring is communicated with the air source through the fourth chamber.

According to the suspension control system disclosed by the utility model, the communication mode of the four groups of air springs can be changed by switching the switching module between the first state and the second state, so that the four groups of air springs adapt to the running working condition of the vehicle, the running smoothness of the vehicle can be improved, the posture of the vehicle is stabilized, and the off-road performance of the vehicle is further improved.

In some embodiments of the present invention, the switching module includes four first control valves, the four first control valves are respectively arranged in one-to-one correspondence with the four groups of air springs, the first control valve has a first port, a second port, a third port and a fourth port, the first port is communicated with an air source, the fourth port is communicated with the air springs, and the second port and the third port are respectively communicated with an inlet and an outlet of one chamber of the central control cylinder;

in the first state, the first port is in communication with the fourth port, and the second port is in communication with the third port;

in the second state, the first port is in communication with the second port and the third port is in communication with the fourth port.

In some embodiments of the present invention, the front left air spring and the front right air spring are selectively communicable, and the rear left air spring and the rear right air spring are selectively communicable.

In some embodiments of the present invention, the suspension control system further comprises two second control valves, one of the second control valves being connected between the front left and right air springs and the other of the second control valves being connected between the rear left and right air springs;

when the switching module is in the second state, the second control valve is opened;

the switching module is in the first state when the second control valve is communicated.

In some embodiments of the present invention, the central control cylinder further includes a first return spring and a second return spring, two ends of the first return spring respectively abut against the left ends of the cylinder body and the moving member, two ends of the second return spring respectively abut against the right ends of the cylinder body and the moving member, and the first return spring and the second return spring push the moving member to return towards the middle.

In some embodiments of the present invention, the central control cylinder includes a guide assembly, the guide assembly includes a first guide member and a second guide member, the first guide member and the second guide member are in sliding fit, the first guide member is fixed on the cylinder body, the second guide member is fixed on the moving member, the first return spring is sleeved on the guide assembly on the left side, and the first return spring is stopped against the first guide member, the second return spring is sleeved on the guide assembly on the right side, and the second return spring is stopped against the first guide member.

The vehicle according to the present invention includes: a vehicle body and an axle; the suspension control system is the suspension control system, and each group of air springs is connected with the vehicle body and the vehicle axle.

In some embodiments of the utility model, the vehicle is provided with an auxiliary road driving mode and a non-auxiliary road driving mode, the vehicle body is provided with a selection module, and the selection module controls the vehicle to switch between the auxiliary road driving mode and the non-auxiliary road driving mode when being triggered; the vehicle also comprises a detection module, wherein the detection module comprises a height sensor, a vehicle body acceleration sensor, a pressure sensor and a steering wheel corner sensor, and the height sensor, the vehicle body acceleration sensor and the pressure sensor are correspondingly arranged on each group of air springs; the switching module, the selection module and the detection module are all connected with a control unit of the vehicle, and the control unit controls the switching module to switch according to output signals of the selection module and the detection module so as to change the state of the switching module.

In some embodiments of the utility model, the selection module comprises a travel mode selection button provided on the vehicle dashboard.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a cross-sectional view of a central control cylinder according to an embodiment of the present invention;

FIG. 2 is a perspective view of a central control cylinder according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a suspension control system according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the switching module switching to a first state according to an embodiment of the utility model;

FIG. 5 is a schematic diagram illustrating the switching module switching to a second state according to an embodiment of the utility model;

fig. 6 is a schematic diagram of the suspension control system of the present invention in a third state.

Reference numerals:

a suspension control system 100;

a left front air spring 11; left rear air spring 12; a right front air spring 13; a right rear air spring 14;

a central control cylinder 24; a cylinder 240; a moving member 241; the moving body portion 2410; an intermediate contact portion 2411; the first chamber 243; a second chamber 244; a third chamber 245; a fourth chamber 246; a first return spring 247; a second return spring 248;

a guide assembly 249; a first guide 2490; a second guide 2491;

the first control valve 31; a first port 311; a second port 312; a third port 313; a fourth port 314; a second control valve 32;

a gas source 41; a gas path distribution valve 42; a torque sensor 43; a vehicle speed sensor 44; an accelerator pedal stroke sensor 45; a brake pedal stroke sensor 46; a height sensor 47; a vehicle body acceleration sensor 48; a pressure sensor 49; a steering wheel angle sensor 50; a battery 51; a control unit 52; an air tank 53.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the utility model. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A suspension control system 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 5, the suspension control system 100 being provided on a vehicle, the suspension control system 100 being used to connect an axle and a body of the vehicle.

As shown in fig. 1 to 5, a suspension control system 100 according to an embodiment of the present invention includes: a central control cylinder 24, a switching module and four sets of air springs. The air springs are suitable for being connected between a vehicle body and wheels, the four groups of air springs comprise a left front air spring 11, a left rear air spring 12, a right front air spring 13 and a right rear air spring 14, the left front air spring 11 is arranged corresponding to the left front wheel of the vehicle, the left rear air spring 12 is arranged corresponding to the left rear wheel of the vehicle, the right front air spring 13 is arranged corresponding to the right front wheel of the vehicle, and the right rear air spring 14 is arranged corresponding to the right rear wheel of the vehicle.

The central control cylinder 24 includes a cylinder body 240 and a moving member 241, the moving member 241 is movably disposed in the cylinder body 240, and the moving member 241 cooperates with the cylinder body 240 to define a first chamber 243, a second chamber 244, a third chamber 245 and a fourth chamber 246, further, the first chamber 243, the second chamber 244, the third chamber 245 and the fourth chamber 246 are not communicated with each other. The first chamber 243, the second chamber 244, the third chamber 245 and the fourth chamber 246 are sequentially arranged in the moving direction of the moving member 241, as shown in fig. 1, the first chamber 243 and the second chamber 244 are distributed on one side of the middle contact portion 2411 of the moving member 241, the third chamber 245 and the fourth chamber 246 are distributed on the other side of the middle contact portion 2411, and the middle contact portion 2411 is in moving fit with the inner wall of the cylinder 240, wherein, as shown in fig. 1, the first chamber 243 and the second chamber 244 are distributed on the left side of the middle contact portion 2411 of the moving member 241, the third chamber 245 and the fourth chamber 246 are distributed on the right side of the middle contact portion 2411 of the moving member 241, and the first chamber 243, the second chamber 244, the third chamber 245 and the fourth chamber 246 are sequentially arranged from the left direction to the right direction in fig. 1.

In some embodiments of the present invention, as shown in fig. 1, the moving member 241 may include a moving body portion 2410, the middle contact portion 2411 is an annular protrusion provided on the moving body portion 2410, in the moving direction of the moving member 241, a middle cavity, a left cavity and a right cavity are provided in the cylinder 240, and an extending port of the left cavity and an extending port of the right cavity are located on an inner wall of the middle cavity. The left end of the movable body portion 2410 extends into the left cavity through the extending opening of the left cavity, and the right end of the movable body portion 2410 extends into the right cavity through the extending opening of the right cavity.

The left end of the moving body portion 2410 defines a first chamber 243 between the left cavity, a portion of the moving body portion 2410 slidably engages the inner wall of the left cavity, the middle contact portion 2411 slidably engages the inner wall of the middle cavity to define a second chamber 244 and a third chamber 245, and a fourth chamber 246 is defined between the right end of the moving body portion 2410 and the right cavity. Thereby making the structure of the central control cylinder 24 simple.

The switching module is used for selectively communicating the central control cylinder 24 between the air source 41 and the four groups of air springs, and has a first state and a second state, wherein in the first state, as shown in fig. 4, the four groups of air springs are not communicated with the central control cylinder 24, the air source 41 is directly communicated with the four groups of air springs, at the moment, the four groups of air springs are independently controlled, the four groups of air springs are not interconnected and not communicated, and the four groups of air springs are independently controlled and correspond to wheels. When the vehicle runs under the urban working condition and the vehicle starts and brakes, the switching module is switched to the first state, the pressure borne by each wheel is controlled by independently controlling the inflation and deflation of the four groups of air springs, the four groups of air springs can adapt to the running working condition of the vehicle when the vehicle runs under the urban working condition and starts and brakes, the running smoothness of the vehicle can be improved, and the vehicle posture is stabilized.

Specifically, the suspension control system 100 has a lift mode in which gas can enter the front left air spring 11, the rear left air spring 12, the front right air spring 13, and the rear right air spring 14, thereby causing the air springs to extend, and a height reduction mode. The left front air spring 11 moves upwards, the left rear air spring 12 moves upwards, the right front air spring 13 moves upwards and the right rear air spring 14 moves upwards to drive the vehicle body to move upwards, so that the purpose of lifting the vehicle body is achieved.

In the height reducing mode, air in the left front air spring 11, the left rear air spring 12, the right front air spring 13 and the right rear air spring 14 flows out, so that the left front air spring 11, the left rear air spring 12, the right front air spring 13 and the right rear air spring 14 are contracted and shortened, and the aim of reducing the height of the vehicle body is fulfilled.

As shown in FIG. 5, in the second condition, one of the front left and rear right air springs 11, 14 is in communication with the air supply 41 via the first chamber 243, the other of the front left and rear right air springs 11, 14 is in communication with the air supply 41 via the second chamber 244, one of the front right and rear left air springs 13, 12 is in communication with the air supply 41 via the third chamber 245, and the other of the front right and rear left air springs 13, 12 is in communication with the air supply 41 via the fourth chamber 246. Further, the left front air spring 11 is communicated with the air source 41 through the first chamber 243, the right rear air spring 14 is communicated with the air source 41 through the second chamber 244, the left rear air spring 12 is communicated with the air source 41 through the third chamber 245, and the right front air spring 13 is communicated with the air source 41 through the fourth chamber 246.

Wherein, the switching module is switched to the second state, at this time, the four groups of air springs are in a cross-interconnected mode, as shown in fig. 1 and 5, when the right front wheel of the vehicle is impacted (climbed), and the right front wheel is lifted (the air spring shock absorber is contracted), the air exhausted by the right front air spring 13 is pressurized to flow into the fourth chamber 246, the air in the fourth chamber 246 pushes the moving member 241 to move towards the first chamber 243 (i.e. to the left in fig. 1), the air in the first chamber 243 is pushed to flow into the left front air spring 11 when the moving member 241 moves towards the first chamber 243, and the air in the second chamber 244 is pushed to flow into the right rear air spring 14, the left front air spring 11 and the right rear air spring 14 absorb the elongation of the air, the left front air spring 11 pushes the left front wheel to move downwards, the right rear air spring 14 pushes the right rear wheel to move downwards, and the left rear air spring 12 discharges the air into the third chamber 245, the left rear air spring 12 contracts, the left rear air spring 12 pushes the left rear wheel to move upwards, the ground clearance of each wheel can be delayed through the cooperation of the four groups of air springs, the right front wheel of the vehicle can further climb, the RTI index is improved accordingly, the ground contact performance of the vehicle is improved, the posture of the vehicle body is stabilized, and excellent driving performance is realized.

It should be noted that, when the vehicle runs under the urban working condition and the vehicle runs straight or turns, the switching module is switched to the second state, so that the four groups of air springs adapt to the running working condition of the vehicle, and the vehicle posture is stabilized. When the vehicle runs under the off-road working condition and the vehicle starts to brake or turns, the switching module is switched to the second state, so that the four groups of air springs adapt to the running working condition of the vehicle, and the posture of the vehicle is stabilized. In the application, the roll stiffness of the vehicle suspension can be controlled by switching the switching module to a state adaptive to each working condition of the vehicle, so that the contradiction between the driving stability and the comfort of the vehicle can be relieved to a certain extent, the performance of the vehicle under special working conditions (turning, starting and braking) is ensured, and when one air spring is changed due to the adaptation to the driving working condition, other air springs are adjusted through the central control cylinder 24 to stabilize the posture of the vehicle, so that the excellent driving performance of the vehicle on a flat road and an off-road is realized.

In a specific embodiment, when the vehicle has a roll tendency, for example, the front left air spring 11 and the rear left air spring 12 are compressed, the front right air spring 13 and the rear right air spring 14 are extended, and at this time, the gas in the front left air spring 11 is discharged to the first chamber 243, and the gas in the rear left air spring 12 is discharged to the third chamber 245, because the first chamber 243 and the third chamber 245 are located at two sides of the middle contact portion 2411, the direction of the force of the gas in the first chamber 243 on the middle contact portion 2411 is opposite to the direction of the force of the third chamber 245 on the middle contact portion 2411, and the opposite forces counteract each other, so that the moving member 241 does not move, thereby the movement of the front left air spring 11 and the rear left air spring 12 can be restrained, and the roll restraining effect can be achieved.

When the front left wheel of the vehicle encounters an obstacle such as a stone, the front left wheel is lifted so that the compression amplitude of the front left air spring 11 is greater than that of the rear left air spring 12, the amount of gas discharged from the front left air spring 11 into the first chamber 243 is greater than that of the gas discharged from the rear left air spring 12 into the third chamber 245, so that the moving member 241 moves towards the right to press the third chamber 245 and the fourth chamber 246, the gas in the third chamber 245 can be discharged into the rear left air spring 12 to extend the rear left air spring 12 to lift the vehicle body, and the gas in the fourth chamber 246 can be discharged into the front right air spring 13 to extend the front right air spring 13 to lift the vehicle body, so that the four groups of air springs are linked, the height of the vehicle body can be adjusted to reduce the inclination amplitude of the vehicle, and the vehicle is prevented from rolling.

In some embodiments of the present invention, as shown in fig. 3, the switching module may include: the four first control valves 31 are respectively arranged corresponding to four groups of air springs one by one, namely, one air spring corresponds to one first control valve 31, the first control valve 31 is provided with a first port 311, a second port 312, a third port 313 and a fourth port 314, the first port 311 is communicated with an air source 41, the second port 312 and the third port 313 are respectively communicated with an inlet and an outlet of one chamber of the central control cylinder 24, the fourth port 314 is communicated with the air springs, for example, when the air springs are left front air springs 11, the second port 312 is communicated with the inlet of the first chamber 243, and the third port 313 is communicated with the outlet of the first chamber 243.

In the first state, the first port 311 is communicated with the fourth port 314, the second port 312 is communicated with the third port 313, and the air source 41 is directly communicated with the air spring, and in the second state, the first port 311 is communicated with the second port 312, the third port 313 is communicated with the fourth port 314, and the air source 41 is communicated with the air spring through the central control cylinder 24.

Through different communication modes between the four ports of the first control valve 31, the switching of the switching module between the first mode and the second mode can be realized, the effect of adjusting the roll characteristic of the vehicle can be achieved, and the effect of adjusting the pitch characteristic of the vehicle can be achieved, so that the turning, starting and braking performance of the vehicle is ensured, and meanwhile, the running smoothness of the vehicle is further improved. Meanwhile, the control switching module is switched to the first state or the second state, so that the self-adaptive adjustment (horizontal adjustment) of the vehicle in the running process can be realized, the adjustment of pitching and rolling characteristics under the limit working condition can also be realized, and the controllability, the comfort and the safety of the vehicle are improved.

It will be understood, of course, that the above-described conditions are merely exemplary, and that when the vehicle encounters other conditions, such as a left rear wheel lift, the gas flows according to the above-described linkage principle to avoid the vehicle rolling, and that each of these conditions will not be described in detail.

Therefore, the communication mode of the four groups of air springs can be changed by switching the switching module between the first state and the second state, so that the four groups of air springs adapt to the running condition of the vehicle, the running smoothness of the vehicle can be improved, and the posture of the vehicle is stabilized.

Note that, in fig. 1, the solid line indicates a pipe along which the gas flows.

In some embodiments of the present invention, as shown in FIG. 3, the front left and right air springs 11 and 13 may be selectively communicated, and the rear left and right air springs 12 and 14 may be selectively communicated. When the left front air spring 11 and the right front air spring 13 are communicated, the left rear air spring 12 and the right rear air spring 14 are communicated, the suspension control system 100 is in a third state, the four groups of air springs are not communicated with the central control cylinder 24, the left front air spring 11 and the right front air spring 13 are communicated, and the left rear air spring 12 and the right rear air spring 14 are communicated, so that the lateral interconnection of the left front air spring 11, the left rear air spring 12, the right front air spring 13 and the right rear air spring 14 is realized. When the vehicle runs under the cross-country working condition and runs linearly, the switching module is switched to the third state, air flows between the left front air spring 11 and the right front air spring 13, and air flows between the left rear air spring 12 and the right rear air spring 14, so that the four groups of air springs can adapt to the running working condition of the vehicle running under the cross-country working condition and running when the vehicle runs linearly, the running smoothness of the vehicle can be improved, the posture of the vehicle is stabilized, and the cross-country performance of the vehicle can be improved.

In some embodiments of the present invention, as shown in fig. 6, the suspension control system 100 may further include: and two second control valves 32, wherein one second control valve 32 is connected between the left front air spring 11 and the right front air spring 13 to control the connection or disconnection of the left front air spring 11 and the right front air spring 13, the other second control valve 32 is connected between the left rear air spring 12 and the right rear air spring 14 to control the connection or disconnection of the left rear air spring 12 and the right rear air spring 14, furthermore, one second control valve 32 is respectively connected with the left front air spring 11 and the right front air spring 13 through pipelines, and the other second control valve 32 is respectively connected with the left rear air spring 12 and the right rear air spring 14 through pipelines. Wherein, one second control valve 32 of the two second control valves 32 is connected between the left front air spring 11 and the right front air spring 13, the second control valve 32 is used for controlling the connection or disconnection of the left front air spring 11 and the right front air spring 13, the other second control valve 32 of the two second control valves 32 is connected between the left rear air spring 12 and the right rear air spring 14, the second control valve 32 is used for controlling the connection or disconnection of the left rear air spring 12 and the right rear air spring 14, the four groups of air springs can be switched to a third state by controlling the two second control valves 32 to respectively connect the left front air spring 11, the right front air spring 13, the left rear air spring 12 and the right rear air spring 14, the four groups of air springs can be adapted to the running condition when the vehicle runs under the off-road working condition and the vehicle runs in a straight line, the running smoothness of the vehicle can be improved, thereby stabilizing the attitude of the vehicle, thereby improving the off-road performance of the vehicle. The switching module can be controlled to exit from the third state by controlling the two second control valves 32 to disconnect the left and right front air springs 11 and 13, and the left and right rear air springs 12 and 14, respectively.

In some embodiments, when the switching module is in the second state, i.e., when the four sets of air springs are connected to the air supply 41 via the central control cylinder 24, the second control valve 32 is in the off state, and when the second control valve 32 is in the on state, the entire suspension control system 100 is in the third state, when the switching module is in the first state, i.e., when the four sets of air springs are directly connected to the air supply 41 via the central control cylinder 24. The third state in the following table refers to a state in which the second control valve 32 is communicated.

In some embodiments of the present invention, as shown in fig. 1, the central control cylinder 24 may further include: and two ends of the first return spring 247 respectively abut against the left ends of the cylinder body 240 and the moving member 241, two ends of the second return spring 248 respectively abut against the right ends of the cylinder body 240 and the moving member 241, and the first return spring 247 and the second return spring 248 push the moving member 241 to return towards the middle. Specifically, when the vehicle is tilted such that the moving member 241 is moved toward the left, the first return spring 247 may push the moving member 241 toward the right such that the moving member 241 is returned. When the vehicle rolls such that the moving member 241 moves toward the right, the second return spring 248 may push the moving member 241 toward the left such that the moving member 241 is returned, so that the reliability of the central control cylinder 24 may be secured.

Further, as shown in fig. 1, the central control cylinder 24 includes a guide assembly 249, the guide assembly 249 includes a first guide 2490 and a second guide 2491, the first guide 2490 and the second guide 2491 are slidably engaged, the first guide 2490 is fixed to the cylinder body 240, the second guide 2491 is fixed to the moving member 241, the first return spring 247 is sleeved on the left guide assembly 249 and the first return spring 247 is abutted against the first guide 2490, the second return spring 248 is sleeved on the right guide assembly 249 and the second return spring 248 is abutted against the first guide 2490. Therefore, the guide assembly 249 is arranged to facilitate the assembly of the first return spring 247 and the second return spring 248 and limit the deformation degree of the first return spring 247 and the second return spring 248, and avoid the failure caused by the excessive deformation of the first return spring 247 and the second return spring 248.

Further, the second guide 2491 is a screw, and one end of the second guide 2491 extends into the first guide 2490 to be movably engaged with the first guide 2490, so that the structure of the guide assembly 249 is simple and reliable.

In some embodiments of the present invention, as shown in fig. 1, the suspension control system 100 may further include: the air path distribution valve 42, the air source 41 of the present invention can be a compressor and/or an air tank 53, the air source 41 is connected to the air path distribution valve 42, further, the air source 41 is connected to the air path distribution valve 42 through a pipeline, and the air path distribution valve 42 is connected to the switching module to supply air to each set of air springs. Specifically, the air passage distribution valve 42 is connected to each of the four first control valves 31 and the two second control valves 32, and the air passage distribution valve 42 selectively supplies air to the left front air spring 11 and/or the left rear air spring 12 and/or the right front air spring 13 and/or the right rear air spring 14. After the air source 41 delivers air to the air path distribution valve 42, when the air path distribution valve 42 supplies air to the left front air spring 11, the left front air spring 11 can be extended, when the air path distribution valve 42 supplies air to the right front air spring 13, the right front air spring 13 can be extended, when the air path distribution valve 42 supplies air to the left rear air spring 12, the left rear air spring 12 can be extended, when the air path distribution valve 42 supplies air to the right rear air spring 14, the right rear air spring 14 can be extended, therefore, the air is selectively supplied to the left front air spring 11 and/or the left rear air spring 12 and/or the right front air spring 13 and/or the right rear air spring 14 through the air path distribution valve 42, sufficient air can be ensured in the four groups of air springs, and air shortage in the air springs can be avoided.

And, the switching module can be switched to the first state by selectively supplying air to the left front air spring 11 and/or the left rear air spring 12 and/or the right front air spring 13 and/or the right rear air spring 14 through the air passage distribution valve 42, controlling the first control valve 31 so that the air spring connected thereto is disconnected from the chamber connected thereto, and controlling the two second control valves 32 so that the left front air spring 11 and the right front air spring 13 are disconnected, and the left rear air spring 12 and the right rear air spring 14 are disconnected, respectively.

It should be noted that when the switching module is in the first state or the second state or the suspension control system 100 is in the third state, after the air of the air source 41 flows to the air path distribution valve 42, and when air needs to be supplied to the air springs, the air path distribution valve 42 can supply air to the left front air spring 11 and/or the left rear air spring 12 and/or the right front air spring 13 and/or the right rear air spring 14.

In some embodiments of the present invention, the suspension control system 100 may further comprise: and a battery 51, wherein the battery 51 is connected with the gas source 41, and the battery 51 can supply power to the gas source 41.

A vehicle according to an embodiment of the present invention includes: a vehicle body, an axle, and a suspension control system 100. The suspension control system 100 is the suspension control system 100 of the above embodiment, each group of air springs is connected with the vehicle body and the vehicle axle, and the arrangement enables the four groups of air springs to adapt to the running working condition of the vehicle, so that the running smoothness of the vehicle can be improved, the vehicle posture is stabilized, and the off-road performance of the vehicle is improved.

In some embodiments of the utility model, the vehicle is provided with an auxiliary road driving mode (e.g. urban conditions as described above) and a non-auxiliary road driving mode (e.g. off-road conditions as described above), and the body is provided with a selection module which when triggered controls the vehicle to switch between the auxiliary road driving mode and the non-auxiliary road driving mode. The vehicle further comprises a detection module, the detection module comprises a height sensor 47 (used for detecting the height of the air spring corresponding to the height), a vehicle body acceleration sensor 48 (used for detecting the acceleration of the vehicle body), a pressure sensor 49 (used for detecting the working pressure of the air spring corresponding to the pressure sensor and preventing the air spring from failing due to overhigh pressure) and a steering wheel angle sensor 50 (used for collecting the steering information of the vehicle), and each group of air springs is correspondingly provided with the height sensor 47, the vehicle body acceleration sensor 48 and the pressure sensor 49. The switching module, the selection module and the detection module are all connected with a control unit 52 of the vehicle, and the control unit 52 controls the switching module to switch according to output signals of the selection module and the detection module so as to change the state of the switching module. The driver controls the vehicle to be switched to an auxiliary road driving mode or a non-auxiliary road driving mode through the selection module, the selection module sends information of the auxiliary road driving mode or the non-auxiliary road driving mode to the control unit 52, the control unit 52 determines the driving mode of the vehicle, the height sensor 47, the vehicle body acceleration sensor 48, the pressure sensor 49 and the steering wheel angle sensor 50 send collected information to the control unit 52, and the control unit 52 decides to control the switching module to be switched to a first state, a second state or a third state according to output signals of the selection module and the detection module. Further, when the control unit 52 controls the switching module to switch to the second state, the control unit 52 controls the vehicle to send a signal to the driver, and when the vehicle has an emergency, the control unit 52 actively controls the switching module to switch to the first state or the second state or the third state, so as to ensure that the vehicle runs smoothly.

Specifically, the driver selects the driving mode of the vehicle through the selection module, the selection module transmits the driving mode information of the vehicle to the control unit 52, the torque sensor 43, the vehicle speed sensor 44, the accelerator pedal stroke sensor 45, the brake pedal stroke sensor 46, the height sensor 47, the vehicle body acceleration sensor 48, the pressure sensor 49 and the steering wheel angle sensor 50 of the detection module transmit the collected information to the control unit 52, the control unit 52 determines the current driving condition of the vehicle according to the output signals of the selection module and the detection module, for example, if the driver selects the auxiliary road driving mode, and the steering wheel angle sensor of the vehicle provides a smaller steering wheel signal, both of which are transmitted to the control unit 52, the control unit 52 may determine that the current vehicle is in the secondary road driving mode, straight driving condition. Then, the control unit 52 decides to control the switching module to switch to the first state, the second state, or the third state according to the driving condition, and decides to control the switching module to switch to the first state, the second state, or the third state according to table 1. The control switching module is switched to a first state, a second state or a third state by applying electric signals to the first control valve 31 and the second control valve 32, so that the switching of the lateral interconnection, the cross interconnection and the independent mode of the four groups of air springs is realized.

TABLE 1 State of the switching Module for each driving mode

In some embodiments of the present invention, the selection module may include a travel mode selection button disposed on a dashboard of the vehicle, the travel mode selection button being manually manipulated by the driver to facilitate driver control of the vehicle to switch between the secondary road driving mode and the non-secondary road driving mode.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A suspension control system, comprising:

the four groups of air springs are suitable for being connected between the wheels and the vehicle body and comprise a left front air spring, a left rear air spring, a right front air spring and a right rear air spring;

the central control cylinder comprises a cylinder body and a moving member, the moving member is movably arranged in the cylinder body and matched with the cylinder body to define a first chamber, a second chamber, a third chamber and a fourth chamber, the first chamber, the second chamber, the third chamber and the fourth chamber are sequentially arranged in the moving direction of the moving member, the first chamber and the second chamber are distributed on one side of a middle contact part of the moving member, the third chamber and the fourth chamber are distributed on the other side of the middle contact part, and the middle contact part is in moving fit with the inner wall of the cylinder body;

the switching module is used for selectively communicating the central control cylinder between an air source and the four groups of air springs and has a first state and a second state, wherein in the first state, the four groups of air springs are not communicated with the central control cylinder, and the air source is directly communicated with the four groups of air springs; in the second state, one of the left front air spring and the right rear air spring is communicated with the air source through the first chamber, the other of the left front air spring and the right rear air spring is communicated with the air source through the second chamber, one of the right front air spring and the left rear air spring is communicated with the air source through the third chamber, and the other of the right front air spring and the left rear air spring is communicated with the air source through the fourth chamber.

2. The suspension control system according to claim 1, wherein the switching module comprises four first control valves, the four first control valves are respectively arranged in one-to-one correspondence with the four sets of air springs, the first control valves are provided with a first port, a second port, a third port and a fourth port, the first port is communicated with an air source, the fourth port is communicated with the air springs, and the second port and the third port are respectively communicated with an inlet and an outlet of one chamber of the central control cylinder;

in the first state, the first port is in communication with the fourth port, and the second port is in communication with the third port;

in the second state, the first port is in communication with the second port and the third port is in communication with the fourth port.

3. The suspension control system of claim 1, wherein the front left air spring and the front right air spring are selectively communicable, and the rear left air spring and the rear right air spring are selectively communicable.

4. The suspension control system of claim 3, further comprising two second control valves, one of the second control valves being connected between the front left and right air springs and the other of the second control valves being connected between the rear left and right air springs;

when the switching module is in the second state, the second control valve is opened;

the switching module is in the first state when the second control valve is communicated.

5. The suspension control system according to claim 1, wherein the central control cylinder further comprises a first return spring and a second return spring, both ends of the first return spring are stopped against left ends of the cylinder body and the moving member, respectively, both ends of the second return spring are stopped against right ends of the cylinder body and the moving member, respectively, and the first return spring and the second return spring urge the moving member to return toward the middle.

6. The suspension control system according to claim 5, wherein the central control cylinder includes a guide assembly including a first guide member and a second guide member, the first guide member and the second guide member are slidably engaged, the first guide member is fixed to the cylinder body, the second guide member is fixed to the moving member, the first return spring is sleeved on the guide assembly on the left side and the first return spring is stopped against the first guide member, the second return spring is sleeved on the guide assembly on the right side and the second return spring is stopped against the first guide member.

7. The suspension control system according to any one of claims 1-6, further comprising a gas line distribution valve, said gas source being connected to said gas line distribution valve, said gas line distribution valve being connected to said switching module to supply gas to each set of said air springs.

8. A vehicle, characterized by comprising:

a vehicle body and an axle;

a suspension control system as claimed in any one of claims 1 to 7, each set of air springs being connected to the vehicle body and axle.

9. The vehicle of claim 8, wherein the vehicle is provided with an accessory road driving mode and a non-accessory road driving mode, and the vehicle body is provided with a selection module that controls the vehicle to switch between the accessory road driving mode and the non-accessory road driving mode when triggered;

the vehicle also comprises a detection module, wherein the detection module comprises a height sensor, a vehicle body acceleration sensor, a pressure sensor and a steering wheel corner sensor, and the height sensor, the vehicle body acceleration sensor and the pressure sensor are correspondingly arranged on each group of air springs;

the switching module, the selection module and the detection module are all connected with a control unit of the vehicle, and the control unit controls the switching module to switch according to output signals of the selection module and the detection module so as to change the state of the switching module.

10. The vehicle of claim 9, characterized in that the selection module comprises a travel mode selection button provided on the vehicle dashboard.

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