JPH0243757U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a sectional view of the main parts of the master cylinder according to the first embodiment of the present invention, FIG. 2 is a front view of the master cylinder of FIG. 1, and FIG. 4 is a sectional view of the main part of a master cylinder according to a third embodiment of the present invention, FIG. 5 is an enlarged sectional view of the main part of a master cylinder according to a fourth embodiment of the present invention, and FIG. FIG. 7 is an enlarged cross-sectional view of the main parts of the master cylinder according to the fifth embodiment of the present invention, FIG. 8 is a perspective view of the clip used in the same embodiment, and FIG. 9 is a perspective view of the clip used in the same embodiment. The figure is a sectional view of the main part of a master cylinder according to the sixth embodiment of the present invention, FIG. 10 is an enlarged sectional view of the main part of FIG. 9, and FIG. 11 is a plan view of the main part shown in FIG. It is. In the figure, 4, 66...residual pressure valve, 10,
20... Lid member, 14... Valve regulating member, 42...
Shaft-shaped member, 65... nipple, 68, 69... through hole.

Claims (1)

[Claims for Utility Model Registration] (1) A cylinder body having a cylinder hole with openings at both ends, a piston that is slidably fitted into the cylinder hole from one opening, and the other opening is closed and connected to an actuating device. a pressure chamber defined in the cylinder hole by the lid member and the piston, and a pressure chamber disposed in the cylinder hole with an inner end surface of the lid member as a valve seat and arranged in the cylinder hole for the operation. A residual pressure valve for maintaining residual pressure is provided on the device side, and the residual pressure valve includes a valve spring whose one end is supported by the cylinder body, and a valve body urged toward the valve seat by the valve spring. In the master cylinder, a stop portion is provided to keep the valve body from moving toward the valve seat at a predetermined position, and the lid member is connected to the valve body while maintaining a seal with the cylinder body. A master cylinder that is movable between a position where the valve body can be seated on the valve seat and a position where the valve body is held by the stop portion and cannot be seated. (2) A cylinder body that has a cylinder hole that is open at both ends, a piston that slidably fits into the cylinder hole from one opening, and a lid that closes the other opening and forms a piping connection that connects to the actuating device. a pressure chamber defined in the cylinder hole by the lid member and the piston; and a residual pressure valve arranged in the cylinder hole with an inner end surface of the lid member as a valve seat to maintain residual pressure on the actuator side. and a bleeder screw that communicates with the pressure chamber and is screwed into a through hole provided in the cylinder body, the bleeder screw is configured to open a residual pressure valve by moving inward of the cylinder hole. A master cylinder with a movable valve shaft. (3) Connect the cylinder body with a cylinder hole, the piston that is slidably inserted into the cylinder hole to partition a pressure chamber, the reservoir that stores the hydraulic fluid to be supplied to the pressure chamber, and the piping to the reservoir. A master cylinder having a nipple, a liquid connection part formed in the cylinder body to which the nipple is attached, a passage extending from the liquid connection part to a pressure chamber, and a residual pressure valve provided in the passage to maintain residual pressure on the pressure chamber side. A second passage is provided, one end of which communicates with the pressure chamber on a side closer to the pressure chamber than the residual pressure valve, and the other end of which opens at the liquid connection part, and the nipple is connected to the second passage, with its internal passage communicating with the passage. The master cylinder is movable from a first position where the opening of the second passage is closed to a second position where the internal passage is communicated with the second passage.