| 摘要 |
<p>PURPOSE: To realize a damping function in simple structure in both of the operation to tilt a pedal from the neutral position and the operation of to restore the pedal from tilting position to the neutral position. CONSTITUTION: When a pedal 35 is tilted, a cam member 21 turns around a shaft 21a to push down one of push rods 22. At a middle portion of the push rod 22, a piston 29 with a throttle valve 25a is provided. The hydraulic fluid in a damper chamber 24 is discharged from an oil chamber 24a through the throttle valve 25a to an external tank through a tank port T. The lower end of the push rod pushed down pushes down a spool valve 28 through a spring bracket piece 27 and a pressing spring 26b, making an output port 31 generate secondary voltage. At this time, another push rod 22' is pushed up by a damping spring 24' together with a piston 29'. Then, the check valves 25b' provided in bulkheads 30 and 30' open, supplying hydraulic fluid from the tank port T into a damper chamber 24a.</p> |
