Brake fluid replacing device and working method thereof

Abstract

The invention provides a brake fluid replacing device. The brake fluid replacing device comprises a piston cylinder body, a piston assembly, a one-way valve assembly, a communicating pipe assembly, a brake fluid barrel, a waste liquid barrel and an idler wheel, wherein the piston cylinder body uses the one-way valve assembly and the communicating pipe assembly through a piston, sucks new hydraulic drive fluid in the brake fluid barrel, and pushes the new hydraulic drive fluid into a brake fluid storage pot of a car, and simultaneously, the piston cylinder body achieves replacement of waste brake fluid by sucking the waste brake fluid in a car brake wheel cylinder through the piston and pushing the waste brake fluid into the waste liquid barrel. The brake fluid barrel and the waste liquid barrel are fixedly installed at the upper end of the piston cylinder body through supports, and the idler wheel is fixedly installed below the piston cylinder body. A working method of the brake fluid replacing device is a negative pressure suction method. The brake fluid replacing device is simple in structure and low in cost, effectively guarantees that no air enters into a brake pipeline system during the brake fluid replacing process, and therefore can not reduce brake performance of the car, facilitates judging whether a brake pipeline leaks or not, is convenient to replace and operate, and saves manpower and material resources.

Description

technical field [0001] The invention relates to an automobile brake fluid replacement device and a replacement method, in particular to an automobile brake fluid changer and a working method thereof. Background technique [0002] Automobile brake fluid is generally replaced every 2 years. During the brake fluid replacement process, air should not enter the brake pipeline to prevent the braking performance from being reduced. At present, the commonly used brake fluid replacement method in automobile 4S shops is: first open the cover of the brake fluid storage tank, one person sits in the driver's seat, lifts the car with a lift, and the other person is outside the car, and uses a plastic One end of the hose is connected to the drain port of a certain wheel brake, and the other end is extended into the waste liquid bucket. The driver steps on the brake pedal, and the person outside the vehicle uses a tool to loosen the fastening nut of the drain port. The waste liquid flows i...

AI Technical Summary

Problems solved by technology

However, the material of the brake fluid storage tank on the car is generally plastic, which often deforms and even leaks under high pressure; at the same time, the flow rate of the new brake fluid pressed into the brake fluid storage tank is difficult to control , there may be a phenomenon that the flow rate of the brake fluid is high and the flow rate of the brake fluid port is low, resulting in excessive hydraulic pressure in the brake pipeline and damage to the brake master cylinder and each brake wheel cylinder.

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