High-performance hydraulic braking main cylinder

Abstract

The invention provides a high-performance hydraulic braking main cylinder. The high-performance hydraulic braking main cylinder comprises a cylinder body. A piston is arranged in the cylinder body, abraking cavity and an oil inflow cavity are formed between the piston and the cylinder body, and the braking cavity is located in the front side of the oil inflow cavity. An oil outlet communicating with the braking cavity is formed in the front end of the cylinder body. An oil cup hole is formed in the rear end of the cylinder body, an oil inlet communicating with the oil inflow cavity is formedin the bottom of the oil cup hole, and an oil overflow hole communicating with an inner cavity of the cylinder body is formed in the bottom of the oil cup hole. A first one-way valve only allowing oilin the oil cup hole to enter the oil inflow cavity is arranged in the oil inlet. An annular rubber leather bowl is arranged on the portion, between the braking cavity and the oil inflow cavity, of the piston, an annular boss is arranged on the portion, on the rear side of the rubber leather bowl, of the piston, and the boss abuts against the rear side face of the rubber leather bowl and is in sealing fit with the rear side face of the rubber leather bowl. A spring is arranged in the braking cavity, the front end of the spring abuts against the front end of the cylinder body, and the rear endof the spring stretches into the rubber leather bowl and abuts against the rubber leather bowl. First oil holes communicating with the front side and the rear side of the boss are formed in the boss,and second oil holes communicating with the front side and the rear side of the rubber leather bowl are formed in the rubber leather bowl.

Description

technical field [0001] The invention relates to the technical field of brake assemblies, in particular to a high-performance hydraulic brake master cylinder. Background technique [0002] The brake master cylinder is a one-way acting piston hydraulic cylinder. Its function is to convert the mechanical energy input by the pedal mechanism into hydraulic energy. It is mainly divided into two types: single chamber and double chamber. [0003] When in use, the driver depresses the pedal to force the piston to move forward through the push rod. During this process, the piston drives the rubber cup to cross the overflow hole. At this time, the hydraulic pipeline is closed, and the pedal force is transmitted downward through the brake fluid. When the brake is released, the return spring pushes the piston to return quickly. [0004] During the entire braking process, what is expected to be achieved is a state of large flow and high oil pressure in order to obtain a relatively high b...

AI Technical Summary

Problems solved by technology

However, these two states are relative states in the process of the piston moving forward. The existing method can only make a trade-off between the two to obtain a balanced state, so that both can be taken into account, but neither is the best. good condition

And such a setting makes the early stage of braking, because the pressure in the brake chamber is small, so that the flow rate and oil pressure in the early stage are relatively low, and the braking efficiency is not high enough.

Images