Intelligent brake master cylinder for two-wheeled vehicle

Abstract

The invention relates to the technical field of two-wheeled vehicle braking, and discloses an intelligent brake master cylinder for a two-wheeled vehicle, the master cylinder comprises an oil can, a cylinder body, a first piston, a transmission mechanism, a controller, a motor, a position detection sensor and a second piston, the second piston is pushed to move forwards through force transmitted by a brake handle, the pressure of brake oil in a hydraulic cylinder is increased, and the brake oil pressure in the hydraulic cylinder is increased. Meanwhile, when the pressure of hydraulic oil in the cylinder is large or small, the first piston can be pushed to move through forward rotation or reverse rotation of the motor and the transmission mechanism, so that the pressure of the brake master cylinder is intelligently adjusted; the position detection sensor is mainly used for accurately measuring the displacement of the piston and can be selectively installed.

Description

Technical Field

[0001] The present invention relates to the technical field of two-wheel vehicle braking, and particularly to an intelligent brake master cylinder for two-wheel vehicles. Background Art

[0002] Traditional hydraulic brake master cylinders cannot achieve in-cylinder pressure regulation. When braking in an emergency during driving, the driver often applies full braking force, and the wheels are easily locked, resulting in skidding and loss of steering ability, posing a danger to driving. Existing braking mechanisms with pressure regulation have a relatively large overall volume and slow response because the pressure increase and decrease do not share the same master cylinder with the brake cylinder. At the same time, after the motor adjusts the pressure, its position cannot return to the original position, the control is not precise enough, and it will have a certain impact on the subsequent pressure regulation response. Summary of the Invention

[0003] To overcome the deficiencies of the above-mentioned prior art, the present invention provides an intelligent brake master cylinder for two-wheel vehicles. This intelligent brake master cylinder can autonomously regulate the in-cylinder pressure in the case of emergency braking by the driver, prevent the wheels from being locked, avoid losing steerability during braking due to wheel lock, and achieve smooth braking of the wheels. After braking is completed, through the position detection sensor, the motor can drive the adjusting piston back to the original position to prepare for subsequent braking.

[0004] The technical solution adopted by the present invention is: an intelligent brake master cylinder for two-wheel vehicles, including an oil pot, a cylinder block, a first piston, a transmission mechanism, a controller, a motor, and a second piston. The oil pot is connected to the cylinder block, close to the side of the second piston ring. The second piston is installed at one end of the cylinder block away from the motor and is movably hinged to the brake handle, and is hermetically fitted with the inner diameter of the cylinder block through the sealing ring on the second piston. The controller is installed at the other end tail of the cylinder block away from the second piston and is connected to the motor. The motor is connected to the transmission mechanism, the transmission mechanism is connected to the first piston, and the sealing ring on the first piston is hermetically fitted with the inner diameter of the cylinder block. Preferably, the intelligent brake master cylinder for two-wheel vehicles further includes a position detection sensor, which is connected to the cylinder block and close to the circlip.

[0005] Compared with the prior art, the beneficial effects of the present invention are: (1) Realize intelligent regulation of the brake master cylinder pressure; (2) Improve the traditional two-wheel vehicle master cylinder with a simple structure to achieve a low-cost anti-lock braking solution for two-wheel vehicles; (3) Solve the problem of no feel when the two-wheel vehicle ABS works. Description of the Drawings

[0006] Figure 1 It is the schematic diagram of the intelligent brake master cylinder described in the present invention; Among them: brake handle 1, oil pot 2, cylinder body 3, first piston 4, retaining spring 5, transmission mechanism 6, controller 7, motor 8, position detection sensor 9, caliper 10, wheel speed sensor 11, brake disc 12, second piston 13, handlebar 14. Implementation

[0007] The intelligent brake master cylinder for two-wheeled vehicles provided by the present invention can realize intelligent adjustment of the brake master cylinder pressure, solve the emergency braking anti-lock problem of two-wheeled vehicles, and increase the driving safety factor; it can also be used for deceleration and braking of other motion mechanisms. The content of the present invention is further explained below in conjunction with the accompanying drawings.

[0008] The structure of the intelligent brake master cylinder is mainly composed of an oil pot 2, a cylinder body 3, a first piston 4, a retaining spring 5, a transmission mechanism 6, a controller 7, a motor 8, a position detection sensor 9, a caliper 10, a wheel speed sensor 11, and a second piston 13. Its working principle is mainly as follows: the brake handle 1 is connected to the second piston 13 by a hinge. When the brake handle 1 is squeezed by hand, the second piston 13 is pushed to the right. The oil pressure in the hydraulic cylinder increases and is transmitted to the brake disc caliper assembly at the same time. The caliper 10 clamps the brake disc 12. The wheel speed sensor 11 detects that the wheel speed is approaching the brake disc. The signal is fed back to the controller 7, and the controller 7 controls the motor 8 to rotate to generate torque, and changes the rotational motion into linear motion through the transmission mechanism 6, pushing the first piston 4 to move to the right, increasing the volume of the main cylinder cavity, reducing the caliper pressure, and the wheel continues to rotate. The wheel speed sensor 11 detects this information and continues to feed back to the controller 7. The controller 7 controls the motor 8 to rotate in the opposite direction to generate torque, and changes the rotational motion into linear motion through the transmission mechanism 6, pushing the first piston 4 to move to the left, reducing the volume of the main cylinder cavity to compress the hydraulic oil, increasing the caliper pressure, and the wheel continues to decelerate, and so on. Finally, the wheel stops. After the wheel stops, the position of the first piston 4 is controlled by the controller 7 to rotate the motor 8 back to the original position and wait according to the feedback information of the position detection sensor 9. The position detection sensor 9 can be selected according to the actual application.

[0009] According to the actual working conditions, the operation of the smart master cylinder for two-wheeled vehicles can be divided into three situations: Normal vehicle deceleration In this working condition, the driver can fully control the vehicle and can push the second piston 13 to decelerate by gently squeezing the brake handle 1. The oil pressure required for deceleration is mainly generated by the driver squeezing the brake handle 1 and pushing the second piston 13 to push the brake disc caliper assembly to brake. At this time, the motor 8 will not work.

[0010] Vehicle emergency braking Under this working condition, when the driver encounters an emergency and fully squeezes the brake handle 1, the oil pressure generated by the second piston 13 will cause the brake disc caliper assembly to perform rapid braking. When the wheel speed sensor 11 senses that the wheel is about to be locked, it will feedback the information to the controller 7, and the controller 7 will quickly control the motor 8 to reduce the pressure. At the same time, due to the decrease in caliper pressure, the wheel speed resumes rotation due to inertia, and the wheel speed sensor 11 will feedback the wheel speed signal to the controller 7 again. The controller 7 will then start to control the motor 8 to increase the pressure, and this process will repeat until the vehicle stops smoothly; Brake standby After braking is completed, the position detection sensor 9 will feedback the position signal of the first piston 4 to the controller 7, and the controller 7 will control the motor 8 to drive the piston back to the original position through the transmission mechanism 6 to standby for subsequent brake pressure regulation.

Claims

1. An intelligent brake master cylinder for two-wheeled vehicles, characterized in that: the intelligent brake master cylinder for two-wheeled vehicles includes an oil pot, a cylinder block, a first piston, a transmission mechanism, a controller, a motor, and a second piston; the oil pot is connected to the cylinder block and is close to the side of the second piston ring; the second piston is installed at one end of the cylinder block away from the motor and is movably hinged to the brake handle, and is sealingly fitted with the inner diameter of the cylinder block through the sealing ring on the second piston; the controller is installed at the tail of the other end of the cylinder block away from the second piston and is connected to the motor; the motor is connected to the transmission mechanism, the transmission mechanism is connected to the first piston, and the sealing ring on the first piston is sealingly fitted with the inner diameter of the cylinder block.

2. The intelligent brake master cylinder for two-wheeled vehicles according to claim 1, characterized in that: the intelligent brake master cylinder for two-wheeled vehicles further includes a position detection sensor, and the position detection sensor is connected to the cylinder block and is close to the circlip.

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