| 摘要 |
A rolling body (31) is held in a rollable manner by a holding member (29). A cover member (36) is constituted by a first flange section (37) and a second flange section (38) and forms a hermetic region in which the rolling body (31) rocks. A first seal member (39) is disposed between the first flange section (37) and the holding member (29), and a second seal member (40) is disposed between the second flange section (38) and the holding member (29). The hermetic region is maintained in a liquid-tight state or an air-tight state by axially pressing a first pressing member (27) and a second pressing member (16). |
