A lid opening/closing mechanism switches a lid between a closed position closing an opening portion of a box-like base body, and an open position opening the opening portion. A distinct point is to include an arm allowing a tip side to turn to a front of the base body as a support point on a base end side pivotally supported at the base body by a first axis support portion, and connected to the lid turnably by a second axis support portion. The lid is turned in an opening direction or a closing direction in association with a turn of the arm.
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