Tank connecting piece for motor vehicle tank, has filling channel penetrating tank connecting piece, in which locking cap is arranged, where locking cap is blocked in closing position

摘要

The tank connecting piece (1) has a filling channel (10) penetrating the tank connecting piece, in which a locking cap (18) is arranged. A locking device has a blocking device, which stays in a locking contact with the locking cap in locking position. The locking cap is blocked in the closing position. A return spring is formed as ring spring, which surrounds the filling channel and an actuating protrusion (7). A diameter expands the movement of the actuating protrusion.