Extractable double-tube gas spring

Abstract

The invention discloses an extractable and controllable double-tube gas spring, including an outer steel tube; an inner steel tube, the inner steel tube is slidingly provided with a piston inside the outer steel tube; a hollow piston rod, the rear end of which extends from the front end of the outer steel tube into the inner steel tube; a one-way throttle valve, the front end of which is connected to the hollow piston rod, and a control rod is slidingly provided with the hollow piston rod, and a valve pin is provided inside the one-way throttle valve, and the control rod is mated with the valve pin to control opening and closing of the one-way throttle valve, the one-way throttle valve is sealed and slidingly fitted with the inner wall of the inner steel tube when the hollow piston rod is compressed and the one-way throttle valve controls the throttling. The one-way throttle valve controls the opening and closing of the one-way throttle valve, the one-way throttle valve seals and slides with the inner wall of the inner steel tube, and the one-way throttle valve controls the gas direction and volume when the hollow piston rod is compressed. This solution makes the gas spring employ smooth expansion and contraction and also can employ the downward pressure easily, no jamming, vibration and noise, keep the large locking force.

Dependencies are inferred from the claim text.