A booster assembly that improves pedal feel

Abstract

The invention relates to the technical field of brake system auxiliary devices, in particular to a booster assembly capable of improving pedal feel, including a front housing, a rear housing assembly, a piston housing assembly disposed in the rear housing assembly, a piston housing assembly disposed in the piston housing The valve body assembly inside the assembly and the brake master cylinder assembly arranged on the front shell, the valve body assembly includes a valve ring assembly, a stop base and a control rod, and the brake master cylinder assembly includes a master Cylinder body, first piston and spring assembly, the inside of the first piston is provided with a feedback plunger, a plunger return spring and a movable plunger, the rear end of the feedback plunger is in contact with the stop base, and the front end is connected with the movable The plunger is contacted and connected, and the plunger return spring is sleeved on the second half of the feedback plunger. The booster assembly of the present invention adopts the feedback plunger to feedback the hydraulic pressure, which improves the energy transmission efficiency and improves the pedal feel. Increase the feedback hydraulic pressure of the active plunger, increase the feedback area, increase the feedback force, and eliminate the feeling of stepping on the crutches.

Description

technical field [0001] The invention relates to the technical field of brake system auxiliary devices, in particular to a booster assembly capable of improving pedal feeling. Background technique [0002] With the development of automobiles, there are more stringent requirements for the pedal feel of the vehicle during driving at this stage. A better pedal feel will increase the driver's sense of safety and control of the vehicle. [0003] The hydraulic feedback of the traditional booster is transmitted by the rubber feedback plate. The deformation of the rubber absorbs part of the energy, and the feedback area remains unchanged during the braking process, which causes the disadvantages of long empty travel and soft pedals during braking, causing the car When braking, the braking distance is too long, the braking is weak and other problems. In addition, since the feedback area of ​​the whole process remains unchanged, if the pedal force is increased after the inflection poi...

AI Technical Summary

Problems solved by technology

[0003] The hydraulic feedback of the traditional booster is transmitted by the rubber feedback plate. The deformation of the rubber absorbs part of the energy, and the feedback area remains unchanged during the braking process, which causes the disadvantages of long empty travel and soft pedals during braking, causing the car When braking, the braking distance is too long, the braking is weak, etc.

In addition, since the feedback area of ​​the whole process remains unchanged, if the pedal force is increased after the inflection point is passed, the increase in the output hydraulic pressure will become smaller, especially during emergency braking. That is, when the driver steps on the pedal, the increase in the output hydraulic pressure becomes smaller, and the increase in the braking force becomes smaller, which cannot shorten the braking distance and affects personal safety.

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