| 摘要 |
PROBLEM TO BE SOLVED: To securely lock an opening/closing member without spoiling user's operability even when large force is needed to close the opening/closing member.SOLUTION: A lock mechanism includes a locking member which is provided to an opening/closing member rotatably around a rotary shaft, a locked member which is provided to a frame body and which the locking member locks, and a contact part which the locking member can contact. The locking member has a striking part which contacts the contact part when the frame body is closed while the locking member does not lock the locked member. When the striking part contacts the contact part, a part of the locking member contacts the locked member to push up an opening/closing part with the rotary shaft, and after the opening/closing member is pushed up, the locking member locks the locked member. |
