Patent ID: 8453810
Filing Date: 2013-06-04
Classification: F16F

Abstract:
1. A damper device adapted to attach to an object for damping a movement or relative movement thereof, comprising: a cylinder body; and a piston body including a seal ring for sealing between the piston body and the cylinder body, and first and second flanges having a space therebetween in a movement direction of the piston body and housing the seal ring, wherein the first flange has a notch portion to receive one part of the seal ring deflecting in response to a movement of the piston body, and the second flange has an exhaust path for communicating the space with an inside of the cylinder body, and the seal ring is arranged such that when the seal ring moves toward a notch portion side upon movement of the piston body, a braking force is applied, and when the seal ring moves toward an exhaust path side, the inner space is released, and when a pressure difference between the inner space, located between the piston body and a deep inner section of the cylinder body, and an outside becomes a predetermined volume or above due to the movement or the relative movement of the piston body, the one part of the seal ring is deflected and deformed so as to open a path for interconnecting the inner space and the outside.