Brake cylinder device and disk brake device
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United States of America Patent
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Dec 8, 2015
Grant Date -
Nov 6, 2014
app pub date -
Nov 16, 2012
filing date -
Nov 25, 2011
priority date (Note) -
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Abstract
The present invention provides a small brake cylinder device that can increase braking force output from a brake output portion that moves along with a rod, while suppressing an increase in the device size. A piston defines a pressure chamber and surrounds the axis of the rod inside a cylinder body, and moves in a linear direction that is parallel to the movement direction of the rod. When pressure fluid is supplied to the pressure chamber, the piston moves in the backward movement direction relative to the cylinder body in resistance to biasing force from a rod biasing spring. Swinging members of a force amplifying mechanism swing due to being biased by the piston moving in the backward movement direction, and moves the rod by biasing it in the forward movement direction. The force amplifying mechanism amplifies the drive force generated by the piston and applies it to the rod.
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