GAS SPRING

摘要

[PROBLEMS] A gas spring in which a stopper member that forms a lock mechanism of the gas spring is connected without positional misalignment to a front end of a cover body also forming the gas spring. [MEANS FOR SOLVING PROBLEMS] The gas spring has the cover body (3) and the stopper member (4). The cover body (3) is a circular tube body in which a rod body (2) is inserted and urged in the direction in which a rod body (2) projects from the inside of a cylinder body (1) by gas pressure sealed in the cylinder body (1). The rod body (2) has a base end inserted in a cylinder body (1) in an advanceable and recedable manner. The cover body (3) has a base end (3a) that is pivotally attached to a front end (2a) of the rod body (2), where the front end (2a) is that portion of the rod body (2) which extends outward of the cylinder body (1). The stopper member (4) is mounted on the base end (3a) of the cover body (3), and inside the stopper member (4) is the front end (2a) of the cylinder body (1). In the stopper member (4), a head end (1c) of the cylinder body (1) is exposed to the inside of a front end (3b) of the cover body (3). The stopper member (4) has a deformed section (4e) located at an end surface (4d) facing a bottom end (1a) of the cylinder body (1). The deformed section (4e) is formed in a substantially tubular shape axially aligned with the cover body (3) and is partially deformed in the direction of the axis of the stopper member (4).