JPH0181364U

JPH0181364U -

Info

Publication number: JPH0181364U
Application number: JP1987178489U
Authority: JP
Priority date: 1987-11-24
Filing date: 1987-11-24
Publication date: 1989-05-31

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す断面図であ
る。１０……従ピストン、１２……凹所、２０……
第１の戻しばね、３０……ばね受け、３２……突
起、４２ｂ……第２のシール、５０……軸部材。 FIG. 1 is a sectional view showing an embodiment of this invention. 10... Slave piston, 12... Recess, 20...
First return spring, 30...Spring receiver, 32...Protrusion, 42b...Second seal, 50...Shaft member.

Claims

[Scope of utility model registration request]

A main body with a cylinder hole, a main piston and a slave piston slidably inserted into the cylinder hole, a slave pressure chamber formed between the cylinder hole and the slave piston, and a main pressure formed between both pistons. a first seal mounted on the main piston for sealing against the main pressure chamber, a second seal mounted on the slave piston for sealing against the main pressure chamber, and communicating each pressure chamber with a hydraulic fluid reservoir. a pair of passages, a pair of valves that shut off communication between the pair of passages and each pressure chamber according to the movement of each piston, a first return spring provided between the main piston and the slave piston, and a cylinder hole. and a second return spring provided between the second return spring and the slave piston, the length of the first return spring being defined by the spring receiver and the shaft member passing through the center hole of the spring receiver. In the tandem-type master cylinder, a recess is provided on the main pressure chamber side of the slave piston, and the spring receiver is fitted into the recess,
A tandem-shaped master cylinder in which the second seal is pressed from the main pressure chamber side by a projection formed on the outer periphery of the spring receiver.