Braking system for all-terrain vehicle and all-terrain vehicle

Abstract

The invention provides a braking system for an all-terrain vehicle and the all-terrain vehicle. The brake system comprises a brake starting assembly, a hydraulic control assembly and an electric control power assisting assembly. The brake starting assembly comprises a pedal mechanism and an angle sensor. The hydraulic control assembly comprises a main cylinder and a front left wheel brake, a rear right wheel brake, a front right wheel brake and a rear left wheel brake which are communicated with the main cylinder, the main cylinder comprises a piston rod, a first cavity and a second cavity, and the brake starting assembly is connected with the piston rod to drive the piston rod to stretch out and draw back; the electric control power assisting assembly comprises an energy storage unit, a motor and an electric control unit, the first cavity communicates with the front left wheel brake and the rear right wheel brake through the energy storage unit, and the second cavity communicates with the front right wheel brake and the rear left wheel brake through the energy storage unit; the braking system has the power assisting function and is compact in structure, the requirement for the installation space of the all-terrain vehicle is reduced, and the technical problem that drifting and sideslip are likely to happen in the braking process is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a braking system for an all-terrain vehicle and the all-terrain vehicle. Background Art

[0002] As a new type of outdoor activity equipment, all-terrain vehicles are loved by outdoor enthusiasts because of their good off-road performance and cargo capacity.

[0003] In order to improve the operating convenience of all-terrain vehicles, a booster device is usually installed in the braking system of the all-terrain vehicle. The booster device generally includes two vacuum booster pumps, several vacuum hoses, two air tanks, two negative pressure sensors and a vacuum booster. The installation space required for the booster device is relatively large, especially in the field of new energy vehicle structure, because the vehicle structure is limited and it is even impossible to install the above-mentioned booster device. In addition, since all-terrain vehicles are often driven on bad roads, there is a risk of tail swinging and skidding during braking, which threatens the safety of the driver. Summary of the invention

[0004] The present invention provides a braking system for an all-terrain vehicle and an all-terrain vehicle. The braking system has a power-assisting function and a compact structure, which reduces the demand for the installation space of the all-terrain vehicle and improves the technical problems of tail swinging and side sliding that are easy to occur during braking.

[0005] To achieve the above-mentioned purpose and other related purposes, the first aspect of the present invention provides a braking system for an all-terrain vehicle, including a brake starting component, a hydraulic control component and an electronically controlled power-assisting component; the brake starting component includes a rotatable pedal mechanism and an angle sensor, the angle sensor being configured to detect the angle of rotation of the pedal mechanism; the hydraulic control component includes a master cylinder and a front left wheel brake, a rear right wheel brake, a front right wheel brake and a rear left wheel brake connected to the master cylinder, the master cylinder includes a piston rod, a first chamber and a second chamber, the brake starting component is connected to the piston rod to drive the piston rod to extend and retract; the electronically controlled power-assisting component includes an energy storage unit, a motor and an electronic control unit, the first chamber is connected to the front left wheel brake and the rear right wheel brake through the energy storage unit, the second chamber is connected to the front right wheel brake and the rear left wheel brake through the energy storage unit, the motor and the energy storage unit are transmission-connected, the electronic control unit is connected to the angle sensor and the motor signal, and the electronic control unit is configured to generate a control instruction based on the detection signal of the angle sensor to drive the motor to act on the energy storage unit to provide power assistance.

[0006] In one embodiment of the present invention, the energy storage unit includes a cylinder body and a first oil inlet channel, a second oil inlet channel, a front left oil outlet, a rear right oil outlet, a front right oil outlet and a rear left oil outlet arranged on the cylinder body, the first oil inlet channel is externally connected to the first chamber, the first oil inlet channel connects the front left oil outlet and the rear right oil outlet, the second oil inlet channel is externally connected to the second chamber, the second oil inlet channel connects the front right oil outlet and the rear left oil outlet, the front left oil outlet is connected to the front left wheel brake, the rear right oil outlet is connected to the rear right wheel brake, the front right oil outlet is connected to the front right wheel brake, and the rear left oil outlet is connected to the rear left wheel brake.

[0007] In one embodiment of the present invention, the electronically controlled power-assisting component also includes an anti-lock braking unit. A wheel speed signal sensor is provided on each wheel. Each wheel speed signal sensor is connected to the electronic control unit through a signal. The electronic control unit generates a control instruction through a signal fed back by each wheel speed signal sensor to control the operation of the anti-lock braking unit.

[0008] In one embodiment of the present invention, the electronic control unit generates a control instruction to distribute the braking force to the four wheels through the signal detected by the wheel speed signal sensor.

[0009] In one embodiment of the present invention, the electric-control power-assisting assembly further includes an electronic parking brake unit.

[0010] In one embodiment of the present invention, the electronically controlled power assist assembly further includes a slope sensor, which is connected to the electronic control unit signal. The electronic control unit generates a control instruction to control the braking force of the electronic parking unit through the signal detected by the slope sensor.

[0011] In one embodiment of the present invention, a stability control unit interface is further provided on the electronically controlled power-assisting assembly, and the stability control unit interface is adapted to the electronic stability control unit.

[0012] In one embodiment of the present invention, the braking system for an all-terrain vehicle further comprises an oil tank, which is connected to the master cylinder and the energy storage unit respectively, and is used to replenish hydraulic oil to the master cylinder and the energy storage unit.

[0013] In one embodiment of the present invention, the brake activation assembly further includes a base plate, the pedal mechanism is rotationally connected to the base plate via a rotating shaft, and the angle sensor is fixedly mounted on the base plate and connected to the rotating shaft.

[0014] The present invention also provides an all-terrain vehicle, comprising four wheels and an all-terrain vehicle braking system acting on the four wheels; the all-terrain vehicle braking system comprises a brake starting component, a hydraulic control component and an electronically controlled power-assisting component; the brake starting component comprises a rotatable pedal mechanism and an angle sensor, the angle sensor being configured to detect the angle of rotation of the pedal mechanism; the hydraulic control component comprises a master cylinder and a front left wheel brake, a rear right wheel brake, a front right wheel brake and a rear left wheel brake connected to the master cylinder, the master cylinder comprises a piston rod, a first chamber and a second chamber, the brake starting component is connected to the piston rod to drive the piston rod to extend and retract; the electronically controlled power-assisting component comprises an energy storage unit, a motor and an electronic control unit, the first chamber is connected to the front left wheel brake and the rear right wheel brake through the energy storage unit, the second chamber is connected to the front right wheel brake and the rear left wheel brake through the energy storage unit, the motor and the energy storage unit are transmission-connected, the electronic control unit is connected to the angle sensor and the motor signal, and the electronic control unit is configured to generate a control instruction based on the detection signal of the angle sensor to drive the motor to act on the energy storage unit to provide power assistance.

[0015] The electric-control power-assisting assembly of the braking system for an all-terrain vehicle of the present invention comprises an energy storage unit, a motor and an electronic control unit. The master cylinder of the hydraulic control assembly is connected to the front left wheel brake, the rear right wheel brake, the front right wheel brake and the rear left wheel brake through the energy storage unit. The electronic control unit is connected to the angle sensor and the motor signal. When the pedal mechanism is stepped on for braking operation, the angle sensor can measure the angle of rotation of the pedal mechanism and feedback the detection signal to the electronic control unit. The electronic control unit sends a control instruction to the motor based on the above detection signal, so that the motor acts on the energy storage unit and injects hydraulic oil into multiple wheel brakes for braking the corresponding wheels. The action of the motor realizes the provision of power assistance to the braking process, so that the driver only needs a small force to complete the braking. The structure of the electric-control power-assisting assembly is compact, which reduces the demand for installation space of the all-terrain vehicle and improves the utilization rate in the all-terrain vehicle.

[0016] On the other hand, when the pedal mechanism is stepped on for braking operation, the hydraulic oil in the first chamber is injected into the front left wheel brake acting on the front left wheel and the rear right wheel brake acting on the rear right wheel, and the hydraulic oil in the second chamber is injected into the front right wheel brake acting on the front right wheel and the rear left wheel brake acting on the rear left wheel. This arrangement enables the hydraulic oil in the first chamber of the master cylinder to act on the front left wheel and the rear right wheel at the same time, and the hydraulic oil in the second chamber to act on the front right wheel and the rear left wheel at the same time, so that even if one chamber fails, the braking system can still provide 50% of the braking force, and the vehicle braking balance can be achieved, which can improve the technical problem that the all-terrain vehicle is prone to tail swinging and side slipping during braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a braking system for an all-terrain vehicle in one embodiment of the present invention;

[0019] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0020] Figure 3 It is a structural schematic diagram of a brake activation component in an embodiment of a brake system of the present invention;

[0021] Figure 4 It is a schematic structural diagram of a brake activation assembly in an embodiment of a brake system of the present invention from another angle;

[0022] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0023] Figure 6 It is a schematic structural diagram of an electronically controlled power-assisting component of a braking system in one embodiment of the present invention;

[0024] Figure 7 An exploded schematic diagram of an electronically controlled power-assisting assembly in a braking system according to an embodiment of the present invention;

[0025] Figure 8 A hydraulic principle diagram of a brake system according to an embodiment of the present invention;

[0026] Fig. 9 FIG. 4 is a schematic diagram of the three-dimensional structure of an all-terrain vehicle according to an embodiment of the present invention.

[0027] Component number description:

[0028] 1. All-terrain vehicle; 10. Braking system; 100. Brake activation assembly; 110. Bottom plate; 111. Mounting plate; 112. Mounting hole; 113. Stop plate; 120. Pedal mechanism; 121. Pedal; 122. Connecting rod; 123. Push rod; 124. First bending section; 125. Second bending section; 130. Angle sensor; 140. Rotating shaft; 150. Torsion spring; 200. Hydraulic control assembly; 210. Master cylinder; 211. First chamber; 212. Second chamber; 213. Piston rod; 220. Hydraulic pipeline; 230. Wheel brake; 231. Front left wheel brake; 232. Rear right wheel brake; 233. Front right wheel brake; 234. Rear left wheel brake Actuator; 300, electric power assist assembly; 310, electronic control unit; 320, motor; 321, motor shaft; 330, energy storage unit; 331, cylinder; 332, first oil inlet channel; 333, second oil inlet channel; 334, front left oil outlet; 335, rear right oil outlet; 336, front right oil outlet; 337, rear left oil outlet; 338, plunger; 339, third chamber; 340, anti-lock braking unit; 341, one-way valve; 342, pressure sensor; 350, slope sensor; 400, oil pot; 410, main oil pipe; 420, branch oil pipe; 430, tee; 11, frame; 12, cockpit; 13, seat; 14, cargo box; 15, wheel; 16, front panel. DETAILED DESCRIPTION

[0029] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0030] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are familiar to those skilled in the art and the description of the present invention, and any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present invention can also be used to implement the present invention.

[0031] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be regarded as the scope of implementation of the present invention.

[0032] See also Figures 1 to 9 The present invention provides a braking system 10 for an all-terrain vehicle 1 and an all-terrain vehicle 1. The braking system 10 for an all-terrain vehicle 1 includes a brake start component 100, a hydraulic control component 200, and an electric control power assist component 300; the electric control power assist component 300 provides power assist for the braking process, so that the driver only needs a small force to complete the braking. In addition, the hydraulic oil in the first chamber 211 of the hydraulic control component 200 acts on the front left wheel and the rear right wheel at the same time, and the hydraulic oil in the second chamber 212 acts on the front right wheel and the rear left wheel at the same time, which improves the technical problem of easy tail swing and side slip during the braking process.

[0033] See also Figure 1 and Figure 8 The present invention provides a braking system 10 for an all-terrain vehicle 1, wherein the braking system 10 for the all-terrain vehicle 1 includes a brake starting component 100, a hydraulic control component 200 and an electric control power assist component 300.

[0034] See also Figures 3 to 5 The brake activation assembly 100 includes a rotatable pedal mechanism 120 and an angle sensor 130. The angle sensor 130 is configured to detect the rotation angle of the pedal mechanism 120. The pedal mechanism 120 includes a pedal 121 for stepping on and a connecting rod 122 connected to the pedal 121. The connecting rod 122 is connected to a push rod 123 acting on the hydraulic control assembly 200. The angle sensor 130 can be any sensor that can measure the rotation angle of the pedal mechanism 120, such as a potentiometer, an ultrasonic angle sensor 130, an optical fiber angle sensor 130, etc. In this embodiment, a potentiometer is used. The rotation angle of the pedal mechanism 120 detected by the angle sensor 130 can be fed back to a variety of control systems and control corresponding components to achieve different functions. The control system can be, for example, a braking system 10, an energy recovery system, a vehicle control system, etc. In one embodiment, the rotation angle of the pedal mechanism 120 detected by the angle sensor 130 is fed back to the energy recovery system. When the pedal 121 is stepped on, the all-terrain vehicle 1 will convert part of the kinetic energy into electrical energy for storage. By accurately measuring the opening of the pedal 121, controlling the energy recovery can make the energy recovery process smoother, the energy recovery force more delicate, and improve the sense of frustration caused by sudden changes in the recovery force.

[0035] See also Figure 1The hydraulic control assembly 200 includes a master cylinder 210 and a plurality of wheel brakes 230 connected to the master cylinder 210 through a hydraulic pipeline 220. The wheel brakes 230 may be disc brakes or drum brakes, which are not limited. In this embodiment, disc brakes are used. The wheel brakes 230 include a front left wheel brake 231 installed on the front left wheel, a rear right wheel brake 232 installed on the rear right wheel, a front right wheel brake 233 installed on the front right wheel, and a rear left wheel brake 234 installed on the rear left wheel. The master cylinder 210 includes a piston rod 213, a first chamber 211 and a second chamber 212. The first chamber 211 and the second chamber 212 are independent of each other and their positions are not limited. As long as the piston rod 213 is extended and retracted at the same time, the piston rod 213 of the brake activation assembly 100, specifically, the push rod 123 in the pedal mechanism 120 is connected to the piston rod 213. When the driver steps on the pedal 121, the pedal 121 drives the connecting rod 122 to rotate, and the connecting rod 122 pushes the push rod 123 to drive the piston rod 213 to extend and retract, and the brake system 10 starts to work, so that the all-terrain vehicle 1 slows down or stops, and the magnitude of the braking force can be controlled by adjusting the strength and depth of stepping on the pedal 121 to achieve smooth deceleration or emergency braking.

[0036] See also Figures 6 to 8 The electric power assist assembly 300 includes an energy storage unit 330, a motor 320 and an electronic control unit 310. The first chamber 211 is connected to the front left wheel brake 231 and the rear right wheel brake 232 through the energy storage unit 330, and the second chamber 212 is connected to the front right wheel brake 233 and the rear left wheel brake 234 through the energy storage unit 330. The above technical solution can achieve: when the pedal mechanism 120 is stepped on for braking operation, the hydraulic oil in the first chamber 211 is injected into the front left wheel brake 231 acting on the front left wheel and the rear right wheel brake 232 acting on the rear right wheel, and the hydraulic oil in the second chamber 212 is injected into the front right wheel brake 233 acting on the front right wheel and the rear left wheel brake 234 acting on the rear left wheel. This arrangement enables the hydraulic oil in the first chamber 211 of the master cylinder 210 to act on the front left wheel and the rear right wheel at the same time, and the hydraulic oil in the second chamber 212 to act on the front right wheel and the rear left wheel at the same time. In this way, even if one chamber fails, the braking system 10 can still provide 50% of the braking force and achieve vehicle braking balance, which can improve the technical problem that the all-terrain vehicle 1 is prone to tail-swinging and side sliding during braking.

[0037] See also Figures 7 and 8The motor 320 is connected to the energy storage unit 330 by transmission. The motor 320 includes a motor shaft 321 capable of linear motion. The energy storage unit 330 includes a plunger 338 and a third chamber 339 slidably connected to the plunger 338. The third chamber 339 communicates with the front left wheel brake 231, the rear right wheel brake 232, the front right wheel brake 233 and the rear left wheel brake 234. The motor shaft 321 is connected to the plunger 338 to push the plunger 338 to move telescopically, and push the hydraulic oil in the third chamber 339 to be injected into the front left wheel brake 231, the rear right wheel brake 232, the front right wheel brake 233 and the rear left wheel brake 234 to achieve braking of the wheel 15. The electronic control unit 310 is connected to the angle sensor 130 and the motor 320 by signal. The electronic control unit 310 is configured to generate a control instruction based on the detection signal of the angle sensor 130 to drive the motor 320 to act on the energy storage unit 330. Specifically, the electronic control unit 310 can judge the driver's operating intention, such as the force and speed of stepping on the pedal 121, based on the signal detected by the angle sensor 130, and can quickly build up the required pressure in the energy storage unit 330 by accurately controlling the motor 320, thereby reducing the driver's operating force and providing assistance for braking. The structure of the electronically controlled power assist assembly 300 is compact, which reduces the demand for installation space of the all-terrain vehicle 1 and improves the utilization rate in the all-terrain vehicle 1.

[0038] See also Figure 6 to Figure 7 In one embodiment of the present invention, the energy storage unit 330 includes a cylinder body 331 and a first oil inlet channel 332, a second oil inlet channel 333, a front left oil outlet 334, a rear right oil outlet 335, a front right oil outlet 336 and a rear left oil outlet 337 arranged on the cylinder body 331, the first oil inlet channel 332 is externally connected to the first chamber 211, the first oil inlet channel 332 communicates with the front left oil outlet 334 and the rear right oil outlet 335, the second oil inlet channel 333 is externally connected to the second chamber 212, the second oil inlet channel 333 communicates with the front right oil outlet 336 and the rear left oil outlet 337, the front left oil outlet 334 communicates with the front left wheel brake 231, the rear right oil outlet 335 communicates with the rear right wheel brake 232, the front right oil outlet 336 communicates with the front right wheel brake 233, and the rear left oil outlet 337 communicates with the rear left wheel brake 234. It should be noted that the communication between the third chamber 339 and the front left oil outlet 334, the rear right oil outlet 335, the front right oil outlet 336 and the rear left oil outlet 337 is controlled by a plurality of solenoid valves, and the plurality of solenoid valves are controlled by the electronic control unit 310. The installation positions of the plurality of solenoid valves and the control relationship with the electronic control unit 310 are not the main improvement points of the present technical solution, and can refer to the prior art, for example Figure 7 and Figure 8 As shown, this is the solution adopted by this technical solution, which will not be described in detail.

[0039] See also Figure 7In one embodiment of the present invention, the electric power assist assembly 300 further includes an anti-lock braking unit 340. A wheel speed signal sensor is provided on each wheel 15. The wheel speed signal sensor may be a Hall sensor, a magnetoelectric sensor or a photoelectric encoder, etc., which is not limited thereto. Each wheel speed signal sensor is connected to the electronic control unit 310 by a signal. The electronic control unit 310 controls the anti-lock braking system 10 to work through the signal fed back by each wheel speed signal sensor. The electronic control unit 310 includes a one-way valve 341 and a pressure sensor 342 through the anti-lock braking unit 340. The signal detected by the wheel speed signal sensor generates a control instruction to control the one-way valve 341, and monitors the hydraulic pressure in the energy storage unit 330 through the pressure sensor 342. When it is detected that the wheel 15 has a risk of locking, the pressure is quickly released, and the braking pressure is increased when the risk of locking is eliminated, and the cycle is repeated, thereby adjusting the braking force on the wheel 15 to realize the anti-lock function of the wheel 15 during the braking process, so as to improve driving safety. It should be noted that the one-way valve 341 and the pressure sensor 342 are both integrated in the energy storage unit 330 , without occupying other installation space, thus improving the space utilization of the entire ground.

[0040] In one embodiment of the present invention, the electronic control unit 310 generates control instructions through the signal detected by the wheel speed signal sensor to distribute the braking force to the four wheels 15. The wheel speed signal sensor is used to detect the rotation speed of the wheel 15 in real time. The electronic control unit 310 judges the dynamic state of the vehicle (such as steering braking or straight-line braking) and the risk of locking by the value fed back by the wheel speed signal sensor of each wheel 15, and adjusts the braking force of each wheel 15 separately according to different states and the risk of locking, so as to achieve the distribution of braking force to the wheel 15 and reduce the situation of wheel 15 locking, side slip and vehicle body instability. It should be noted that the analysis and calculation method of the signal by the electronic control unit 310 is not the main inventive point of the present invention. It can refer to the common means in the field, and will not be described in detail.

[0041] In one embodiment of the present invention, the electric power assist assembly 300 also includes an electronic parking brake unit. The electronic parking brake unit realizes the parking brake of the all-terrain vehicle 1 through electronic control, replacing the traditional handbrake lever. The electronic parking brake unit includes a parking switch (not shown in the figure), and the parking switch can be set in all positions that are convenient for the driver to operate, and there is no limitation on this. The parking switch is connected to the electronic control unit 310 by signal. When the parking switch sends a parking command to the electronic control unit 310, the electronic control unit 310 controls the energy storage element to apply pressure to lock the wheel 15. When the parking switch sends a release parking command to the electronic control unit 310, the electronic control unit 310 controls the energy storage element to release the pressure to release the brake on the wheel 15. The electronic parking brake unit can activate or release the parking brake by simply pressing the parking switch, which is convenient to operate and can also free up space in the vehicle.

[0042] See also Figure 7 In one embodiment of the present invention, the electric control power assist assembly 300 further includes a slope sensor 350. The slope sensor 350 can be installed at any position of the all-terrain vehicle 1 that can ensure accurate measurement of the inclination angle of the all-terrain vehicle 1, and there is no limitation on this. In this embodiment, the slope sensor 350 is installed on the energy storage unit 330, which saves installation space and is convenient for synchronous calibration with the anti-lock brake unit 340, saving costs and braking time. The slope sensor 350 is connected to the electronic control unit 310 by signal. The electronic control unit 310 generates a control instruction to control the braking force of the electronic parking brake unit through the signal detected by the slope sensor 350. In one embodiment, when the slope sensor 350 detects that the all-terrain vehicle 1 is located on a slope with a slope of less than or equal to 8°, the braking force needs to be 8KN. When it is located on a slope with a slope greater than 8°, the electronic control unit 310 controls the braking force of the electronic parking brake unit to increase to 11KN.

[0043] In one embodiment of the present invention, the electric power assist assembly 300 is also provided with a stability control unit interface, which is adapted to the electronic stability control unit and can be used for subsequent expansion of the electronic stability control unit to further improve the driving stability and safety of the vehicle.

[0044] See also Fig. 9 In one embodiment of the present invention, the brake system 10 for the all-terrain vehicle 1 further includes an oil pot 400, which is connected to the master cylinder 210 and the energy storage unit 330 respectively, and is used to replenish hydraulic oil to the master cylinder 210 and the energy storage unit 330. The oil pot 400 is used to store and supply brake fluid. The brake in this embodiment is also hydraulic oil. The oil pot 400 in this embodiment needs to supply hydraulic oil to the master cylinder 210 and the energy storage unit 330 at the same time, so the oil pot 400 is externally connected to a main oil pipe 410, and the main oil pipe 410 is connected to two branch oil pipes 420 through a tee 430. The two branch oil pipes 420 are connected to the master cylinder 210 and the third chamber 339 of the energy storage unit 330 respectively. Since the energy storage unit 330 is self-pressurized, the internal oil circuit is prone to form a cavity, so the timely replenishment of the hydraulic oil in the energy storage unit 330 by the oil pot 400 can make up for the cavity and ensure the vacuum degree of the hydraulic unit. This enables rapid pressurization of the energy storage unit 330, thereby ensuring the timeliness of pressure building.

[0045] See also Figures 3 to 5In one embodiment of the present invention, the brake activation assembly 100 further includes a base plate 110, which is mounted on the front wall 16 of the all-terrain vehicle 1. The pedal mechanism 120 is rotatably connected to the base plate 110 via a rotating shaft 140, and the angle sensor 130 is fixedly mounted on the base plate 110 and connected to the rotating shaft 140. Specifically, the base plate 110 includes a mounting plate 111 protruding in a direction away from the master cylinder 210, and a mounting hole 112 is provided on the mounting plate 111. The rotating shaft 140 passes through the mounting hole 112 and is rotatably connected to the mounting plate 111. One end of the rotating shaft 140 is fixedly connected to the connecting rod 122 to realize the rotatable connection between the pedal mechanism 120 and the mounting plate 111. The end away from the connecting rod 122 is connected to the angle sensor 130, so that the angle sensor 130 detects the rotation angle of the pedal mechanism 120 according to the rotation of the rotating shaft 140. A torsion spring 150 is also sleeved on the rotating shaft 140. One end of the torsion spring 150 is connected to the connecting rod 122, and the other end is connected to the mounting plate 111, so that the pedal mechanism 120 can be returned to its original position after the pedal force on the pedal 121 disappears. The bottom plate 110 also includes a limit plate 113, which is used to limit the initial position of the pedal mechanism 120. The structure of the bottom plate 110 is ingenious and occupies less space. At the same time, the angle sensor 130 detects the rotation angle of the pedal mechanism 120, overcoming the difficulty of limited space on the all-terrain vehicle 1. The rotation angle of the pedal mechanism 120 detected by the angle sensor 130 can be fed back to a variety of control systems and control corresponding components to achieve different functions. The control system can be, for example, a braking system 10, an energy recovery system, a vehicle control system, etc. These systems work together to achieve efficient, safe and comfortable operation of the all-terrain vehicle 1.

[0046] See also Figure 3 In one embodiment of the present invention, the connecting rod 122 in the pedal mechanism 120 is a bent structure. Specifically, in the direction from the end of the connecting rod 122 connected to the base plate 110 to the end connected to the pedal 121, the connecting rod 122 includes a first bent section 124 bent backward and a second bent section 125 bent leftward. The first bent section 124 is provided to achieve the connection position of the pedal 121 and the connecting rod 122 to move backward relative to the connection position of the connecting rod 122 and the base plate 110, so that the operation of the pedal 121 is more linear, providing a clear sense of feedback and improving driving controllability. The second bent section 125 is provided to achieve the connection position of the pedal 121 and the connecting rod 122 to move left relative to the connection position of the connecting rod 122 and the base plate 110, optimizing the movement trajectory of the pedal 121, thereby allowing the driver's legs to stretch naturally when stepping on the pedal and reducing fatigue.

[0047] See also Fig. 9The present invention also provides an all-terrain vehicle 1, which may include a frame 11, a cockpit 12, a seat 13 and a cargo box 14. The frame 11 may be a symmetrical structure, and the symmetrical structure is conducive to improving the balance, stability and safety of the all-terrain vehicle 1 during driving. The cockpit 12 is installed on the frame 11, which can protect the driver, prevent wind and rain, reduce noise, improve comfort, etc. The seat 13 is arranged on the frame 11 and is located in the cockpit 12. The cargo box 14 is installed on the frame 11, and the cargo box 14 can be located behind the seat 13 to carry cargo.

[0048] See also Figure 1 and Fig. 9 The all-terrain vehicle 1 further includes four wheels 15 and a braking system 10 for the all-terrain vehicle 1 acting on the four wheels 15. The wheels 15 include a front left wheel and a front right wheel located in front of the frame 11, and a rear left wheel and a rear right wheel located behind the frame 11. The braking system 10 for the all-terrain vehicle 1 includes a brake activation assembly 100, a hydraulic control assembly 200, and an electric control assist assembly 300. The all-terrain vehicle 1 further includes a front panel 16, and parts of the brake activation assembly 100 and the hydraulic control assembly 200 are mounted on the front panel 16.

[0049] See also Figures 1 to 3 The brake activation assembly 100 includes a rotatable pedal mechanism 120 and an angle sensor 130, and the angle sensor 130 is configured to detect the rotation angle of the pedal mechanism 120. The hydraulic control assembly 200 includes a master cylinder 210 and a front left wheel brake 231, a rear right wheel brake 232, a front right wheel brake 233 and a rear left wheel brake 234 connected to the master cylinder 210. The master cylinder 210 includes a piston rod 213, a first chamber 211 and a second chamber 212. The brake activation assembly 100 is connected to the piston rod 213 to drive the piston rod 213 to extend and retract. The electric-control power-assist assembly 300 includes an energy storage unit 330, a motor 320 and an electronic control unit 310. The first chamber 211 is connected to the front left wheel brake 231 and the rear right wheel brake 232 through the energy storage unit 330. The second chamber 212 is connected to the front right wheel brake 233 and the rear left wheel brake 234 through the energy storage unit 330. The motor 320 and the energy storage unit 330 are connected in transmission connection. The electronic control unit 310 is connected in signal connection with the angle sensor 130 and the motor 320. The electronic control unit 310 is configured to generate a control instruction based on the detection signal of the angle sensor 130 to drive the motor 320 to act on the energy storage unit 330 to provide power assistance.

[0050] The braking system for an all-terrain vehicle of the present invention comprises a brake activation component, a hydraulic control component and an electric control power assist component; the electric control power assist component provides power assist for the braking process, so that the driver only needs a small force to complete the braking. In addition, the hydraulic oil in the first chamber of the hydraulic control component acts on the front left wheel and the rear right wheel at the same time, and the hydraulic oil in the second chamber acts on the front right wheel and the rear left wheel at the same time, which improves the technical problem of easy tail swing and side slip during the braking process.

[0051] Therefore, the present invention effectively overcomes some practical problems in the prior art and thus has high utilization value and use significance.

[0052] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A braking system for an all-terrain vehicle, characterized in that: include: A brake activation assembly, comprising a rotatable pedal mechanism and an angle sensor, wherein the angle sensor is configured to detect an angle of rotation of the pedal mechanism; A hydraulic control assembly, comprising a master cylinder and a front left wheel brake, a rear right wheel brake, a front right wheel brake and a rear left wheel brake connected to the master cylinder, the master cylinder comprising a piston rod, a first chamber and a second chamber, the brake activation assembly being connected to the piston rod to drive the piston rod to extend and retract; An electronically controlled power-assisting component comprises an energy storage unit, a motor and an electronic control unit, wherein the first chamber is connected to the front left wheel brake and the rear right wheel brake through the energy storage unit, and the second chamber is connected to the front right wheel brake and the rear left wheel brake through the energy storage unit, the motor is transmission-connected to the energy storage unit, the electronic control unit is signal-connected to the angle sensor and the motor, and the electronic control unit is configured to generate a control instruction based on a detection signal of the angle sensor to drive the motor to act on the energy storage unit to provide power assistance.

2. The all-terrain vehicle braking system according to claim 1, characterized in that: The energy storage unit includes a cylinder body and a first oil inlet channel, a second oil inlet channel, a front left oil outlet, a rear right oil outlet, a front right oil outlet and a rear left oil outlet arranged on the cylinder body, the first oil inlet channel is externally connected to the first chamber, the first oil inlet channel communicates with the front left oil outlet and the rear right oil outlet, the second oil inlet channel is externally connected to the second chamber, the second oil inlet channel communicates with the front right oil outlet and the rear left oil outlet, the front left oil outlet is connected to the front left wheel brake, the rear right oil outlet is connected to the rear right wheel brake, the front right oil outlet is connected to the front right wheel brake, and the rear left oil outlet is connected to the rear left wheel brake.

3. The braking system for an all-terrain vehicle according to claim 1, characterized in that: The electronically controlled power-assisting assembly also includes an anti-lock braking unit. A wheel speed signal sensor is provided on each wheel. Each wheel speed signal sensor is connected to the electronic control unit by signal. The electronic control unit generates a control instruction through the signal fed back by each wheel speed signal sensor to control the operation of the anti-lock braking unit.

4. The braking system for an all-terrain vehicle according to claim 3, characterized in that: The electronic control unit generates a control command to distribute the braking force to the four wheels based on the signal detected by the wheel speed signal sensor.

5. The braking system for an all-terrain vehicle according to claim 1, characterized in that: The electronically controlled power-assisting assembly also includes an electronic parking brake unit.

6. The braking system for an all-terrain vehicle according to claim 5, characterized in that: The electronically controlled power assist component further includes a slope sensor, which is connected to the electronic control unit by signal. The electronic control unit generates a control instruction based on the signal detected by the slope sensor to control the braking force of the electronic parking unit.

7. The braking system for an all-terrain vehicle according to claim 1, characterized in that: The electronically controlled power-assisting component is also provided with a stability control unit interface, and the stability control unit interface is adapted to the electronic stability control unit.

8. The braking system for an all-terrain vehicle according to claim 1, characterized in that: The all-terrain vehicle braking system also includes an oil pot, which is connected to the master cylinder and the energy storage unit respectively and is used to replenish hydraulic oil to the master cylinder and the energy storage unit.

9. The braking system for an all-terrain vehicle according to claim 1, characterized in that: The brake activation assembly further comprises a base plate, the pedal mechanism is rotationally connected to the base plate via a rotating shaft, and the angle sensor is fixedly mounted on the base plate and connected to the rotating shaft.

10. An all-terrain vehicle, characterized in that: An all-terrain vehicle comprising four wheels and a braking system acting on the four wheels; The all-terrain vehicle braking system comprises: A brake activation assembly, comprising a rotatable pedal mechanism and an angle sensor, wherein the angle sensor is configured to detect an angle of rotation of the pedal mechanism; A hydraulic control assembly, comprising a master cylinder and a front left wheel brake, a rear right wheel brake, a front right wheel brake and a rear left wheel brake connected to the master cylinder, the master cylinder comprising a piston rod, a first chamber and a second chamber, the brake activation assembly being connected to the piston rod to drive the piston rod to extend and retract; An electronically controlled power-assisting component comprises an energy storage unit, a motor and an electronic control unit, wherein the first chamber is connected to the front left wheel brake and the rear right wheel brake through the energy storage unit, and the second chamber is connected to the front right wheel brake and the rear left wheel brake through the energy storage unit, the motor is transmission-connected to the energy storage unit, the electronic control unit is signal-connected to the angle sensor and the motor, and the electronic control unit is configured to generate a control instruction based on a detection signal of the angle sensor to drive the motor to act on the energy storage unit to provide power assistance.

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