| 摘要 |
The rotation direction of a lock member is substantially the same as the rotation direction of a second housing when the second housing is rotated from a closed position to an opened position. Thus, when the second housing is in a closed state, a user presses a base in a direction indicated by an arrow D with a finger of a hand, engages the finger with an inner surface of a concave, and displaces the hand in a direction indicated by an arrow B, thereby performing lock cancel of the lock member and a rotation operation of the second housing continuously.
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