PURPOSE: To conduct insertion and extraction operations of a circuit unit easily and to cope with a trouble due to electromagnetic waves easily by providing a case with a wide opened slit which guides the edge of a printed board into its position and a fixed thread seat into which a continuous thread for preventing a run-out of a shaft may be threaded.
CONSTITUTION: A guide fitting 6 which has a wide opened slit 61 for guiding the edge 22 of a printed board 2 to its position and a fixed thread seat 62 having a thread hole in the threading direction is secured at the specified place around a connector 5 in a case 4. A circuit unit 1 is provided with a continuous thread 8 which is supported by a thread 81, a stepped part 82 to be used as a stopper and a holding member 7 secured at the specified place that has the other end being held for the purpose of preventing a run-out of a shaft and exposed on the surface. By this method, the edge 22 of the printed board 2 near both sides of a connector 3 can be positioned by the wide opened slit 61 and thereby the connectors 3 and 5 can be surely fit in even if the printed board 2 is warped. And, threading the continuous thread 8 in the fixed thread seat 62 of the guide fitting 6 provides the connector 3 with the specified fitting stroke.
SATO SUSUMU
YOSHIDA NOBUKI
