Actuator mechanism for lifting a hood of a motor vehicle

摘要

The actuator mechanism of the present embodiment comprises the first cylinder (201), a rod protruding from the first cylinder (201) to lift a hood and lock balls arranged along the outer periphery of the rod and digging into the rod when the rod is pushed back. The diameter of the lock balls (213) and the lapping amount of the lock balls (213) are within specific ranges.