JPH0268259U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part showing the structure of one embodiment of a master cylinder according to the present invention, FIG. 2 is a sectional view of a main part showing the structure of another embodiment, and FIG. 3 is a seal shown in FIG. 2. FIG. 4 is a plan view showing the shape of the member, and a cross-sectional view of a main part showing the structure of a conventional master cylinder. 10, 26: Cylinder body, 12, 28: Hole, 13, 14, 29, 30: Communication path, 15, 27
: Reservoir tank, 17, 31: Connection port, 18,
32: first opening, 19, 33: second opening, 2
0, 37: Partition wall, 21, 34: Seal member, 2
2, 23, 35, 36: perforation.

Claims (1)

[Claim for Utility Model Registration] In a master cylinder that generates two systems of hydraulic pressure by supplying brake fluid individually from two partitioned tank chambers in a reservoir tank, a single tank is connected to the cylinder body. A communication passage for one of the hydraulic pressure generation chambers is opened at the bottom, and a communication passage for the other hydraulic pressure generation chamber is opened at the stepped part of the stepped hole, and the passage is fitted into the stepped hole. The connection port of the reservoir tank to be fixed is a stepped connection port, a first opening is formed at the tip of the stepped connection port, and a second opening is formed in the stepped portion to partition the first and second openings. A master cylinder characterized in that a partition wall is formed in a tank, and a connection port of the tank is fitted and fixed into a hole in a cylinder body via a single sealing member.