| 摘要 |
Provided is a brake device having a simplified structure. A brake device is provided with: a master cylinder; a simulator cylinder; a master cylinder piston which defines a master cylinder chamber within the master cylinder and which moves in response to braking operation by a driver; and a simulator piston which defines a simulator cylinder chamber within the simulator cylinder and which, because of pressure within the master cylinder chamber, moves in coordination with the master cylinder piston so that the volume of the simulator cylinder chamber will decrease. Brake fluid within the simulator cylinder chamber is discharged to the outside thereof because of the reduction in the volume of the simulator cylinder chamber. The simulator piston is configured so that the pressure receiving area thereof on the simulator cylinder chamber side will be smaller than that on the master cylinder chamber side, or the master cylinder piston is configured so that the pressure receiving area thereof on the master cylinder chamber side is smaller than that on the opposite side of the master cylinder piston from the master cylinder chamber. |
