发明授权
US5121690A Plate base fixing structure 失效
板底固定结构

Plate base fixing structure
摘要:
A plate base fixing structure including positioning pins provided on either a plate base or plate base fixing block, positioning holes provided in one of the two members which has no positioning pins, the positioning pins being inserted the positioning holes, and a negative-pressure suction hole opened in the plate base fixing block so that the suction hole lets the negative pressure pass to the plate base fixing block. Thus, the plate base is mounted on the plate base fixing block by suction adhesion obtained as a result of the negative pressure.
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