Novel non-contact snap ring internal lock actuator cylinder

A novel non-contact snap ring internal lock actuator cylinder comprises an outer cylinder, a snap ring, a piston, a piston rod and an internal lock mechanism, an outer cylinder groove used for containing the snap ring is formed in one end in the outer cylinder, the piston rod capable of driving the snap ring to move is arranged at the other end in the outer cylinder, and a steel ball used in cooperation with the piston is arranged on the piston rod. A groove for limiting the steel ball is formed in the piston; an inner locking mechanism capable of providing spring force is arranged in the piston rod, and a gap is reserved between the clamping ring and the inner wall of the outer cylinder. The spring force of the spring is matched with the groove formed in the piston, when the piston rod freely stretches out and draws back, mutual friction between the clamping ring and the inner wall of the outer cylinder is effectively prevented, unnecessary abrasion is reduced, the service life of a product is prolonged, and