To restrain vibration of an inner cable by providing a vibration restraining member having a lock means being penetrated with an outer casing and a through hole fastened with a vehicle constituting member in a car room without contacting with the lock means and through which an inner cable only loosely penetrates.

A vibration restraining body 6 is nearly cylindrical, and it is provided with claw parts for locking with a bracket 5 and a through hole 600 on the center part for loosely inserting an inner cable 42. One end of an outer casing 41 and the vibration restraining body 6 are fixed to a dash 1, one end of the inner cable 42 is fixed to the end pat of an arm, and the other end is fixed to a throttle valve. Consequently, vibration from an engine 2 is transmitted to the inner cable 42, but the inner cable 42 contacts with the inner wall of the through hole of the vibration restraining body 6 in the perpendicular direction to the cylinder axis direction and hence the vibration is restrained.