| 摘要 |
PROBLEM TO BE SOLVED: To propose means for suppressing performance deterioration of a seismoscope due to leak of a viscous fluid.SOLUTION: Crosslinking suppression means (surface treatment W, groove G) is provided on a fixing side member (suspension shaft 363), or on an oscillation side member (lid body 362), or both of the fixing side member and the oscillation side member. The crosslinking suppression means suppresses a viscous fluid F which leaks from a dumper part from being a crosslinking state in which the viscous fluid exists in a manner of contacting both of a fixing face P1 and an oscillation face P2.SELECTED DRAWING: Figure 1 |
