To obtain a more excellent operation feeling by suppressing a feeling of rebound resistance due to energizing force of a reaction simulator member.
A simulator operation piston 14 operates by input of an input shaft 4 and first and second reaction simulator pistons 18, 20 move down with hydraulic pressure generated in a simulator hydraulic fluid pressure chamber 15. At this time, the hydraulic pressure in the hydraulic pressure chamber 15 reaches hydraulic pressure based on the input with energizing force of the first and the second reaction simulator springs 19, 21, and is transmitted as reaction force to the input shaft 4 through a piston 14. Through the downward movement of the piston 20, its sliding resistance force imparting member deformation operation part 20a presses and deforms a reaction simulator piston sliding resistance force imparting member 29. Consequently, sliding resistance force which varies according to the operation of the piston 20 is applied to the piston 20.
Ryukichi Abe
Takashi Koyama
Teiji Tanaka