| 摘要 |
<p>A grease filling chamber to be filled with grease for a seal member which seals compressed gas can be easily formed in order to prevent grease shortage. <??>Gas spring (7) comprises cylinder body (20), rod member (21) internally slidably fitted in the cylinder body (20), and gas filling chamber (23) which is formed inside the cylinder body (20) and filled with compressed gas (22), wherein seal members (25, 26) for sealing between the cylinder body (20) and the rod member (21) are disposed at both sides of the gas filling chamber (23), while ring members (27, 28) for partitioning the gas filling chamber (23) are disposed at the end portion of the gas filling chamber (23) close to the seal members (25, 26), and accordingly, annular grease filling chamber (29, 30) for filling grease (44) between the seal member (25, 26) and the ring member (27, 28) can be easily formed, and it is possible to prevent grease shortage by the grease (44) in the grease filling chamber (29, 30). <IMAGE></p> |
