Analysis of the Principle of Pull Cord Dampers - Torque Generation

Pulling the rope causes the shaft core to move upward, sealing the shaft core and the lower cylinder wall. The air can only escape through the small hole, and the torque generated by the size of the small hole, i.e., the exhaust volume, determines the damping torque.

Analysis of the working principle of rope dampers - Reset

After the shaft core is pushed forward by the spring, the seal ring is forced away from the bottom of the shaft core, exposing the exhaust groove, and air and excess lubricating oil are discharged from the exhaust groove.