(57) [summary] [purpose] apparatus housing and, between the movable body which are housed in the casing, one end of the apparatus case of code carrier pivotally connected to the two pieces of code case by a hinge In cord storage mechanism mounted pivotally on the movable body and the other end to the body, swinging is generated in movable body during entry into the housing, the insertion of the movable body by or broken encode cases deformed by the shake · drawer accident resulting in cutting the cord may become impossible to be intended to prevent the occurrence. [Configuration] Therefore, a feature that it has formed a clearance portion by the Code case 10a, the convex portion 14 such that it protrudes into the guide portion 13 and the movable body side which is inclined obliquely toward the housing 7 side 10b mounted on the movable body to.
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