| 摘要 |
PROBLEM TO BE SOLVED: To provide a locking structure of a side block capable of releasing the limitation of the movement of a rubber bearing by horizontally moving the side block without rotating. SOLUTION: This locking structure comprises a first locking means allowing the horizontal movement of the side block 8 in the direction perpendicular to the axis of a bridge but stopping the rotation thereof in the vertical direction and a second locking means normally limiting the horizontal movement of the side block 8 and allowing the horizontal movement of the side block 8 in the direction perpendicular to the axis of the bridge when a predetermined horizontal force or larger is applied to the side block. The first locking means comprises an elongated hole 11 formed at the side block 8 along the direction perpendicular to the axis of the bridge and a fastening member 12 inserted into the elongated hole 11 the upper end of which is engaged with the side block 8, and the lower end of which is secured to a base plate 4. The second locking means has a buckling member 20 deformed by buckling when a predetermined horizontal force or larger is applied to the side block. COPYRIGHT: (C)2008,JPO&INPIT
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