| 摘要 |
PROBLEM TO BE SOLVED: To readily realize shortest and isometric wiring length for a circuit board, a secure transmission of high-speed signals and an easy attachment/ detachment of a circuit board, without impairing maintenance property. SOLUTION: Slots for a circuit board are arranged between props 101 to 104, and the circuit board is freely insertable and pullable by guide rails 121 to 126. Connectors inserted and pulled out in the direction crossing the insertion and pulling-out direction of the circuit board are fitted at a side edge of the circuit board, and connector support parts 111 to 119 are operated by levers (303, 608) which operate substantially in the direction of insertion and pulling-out of the board, to insert and pull out connectors arranged at the connector support parts 111 to 119 and connectors at the circuit board side edge. The levers are to be equipped with a mechanism, as needed, for folding the protruded parts of the levers outside a case, when they are pulled out toward the outside direction of the case.
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