Patent ID: 9732822
Date: 2017-08-15
CPC Classifications: B66D,F16F,Y10T

Claim:
1. A gas spring device comprising: a gas spring that is fixed to a frame, and generates a force proportional to a differential pressure between a pressure in an inner space and an atmospheric pressure; a suction/discharge part that is arranged in the gas spring, and is capable of adjusting an amount of gas in the inner space of the gas spring; a rotary body that is rotatably arranged in the frame and connected to the gas spring, to which a first torque due to the force generated by the gas spring is applied; a displacement part that is connected to the rotary body, and is displaced in conjunction with a rotary movement of the rotary body; a speed change part that is arranged in the frame, and configured to perform one or both of conversion between a sum of the first torque and a second torque applied to the rotary body and a force applied to the displacement part by being arranged between the rotary body and the displacement part, and conversion between the generating force of the gas spring and the first torque applied to the rotary body by being arranged between the gas spring and the rotary body; and a torque compensating part that is arranged in the frame and connected to the rotary body, and applies the second torque to the rotary body, and sets the sum of the first torque and the second torque applied to the rotary body to substantially 0 when the amount of the gas in the inner space of the gas spring is at a predetermined value.