| 摘要 |
PROBLEM TO BE SOLVED: To provide a door lock device allowing a person confined in a cold reserving device by mistake to easily escape by her/hemself. SOLUTION: A nut 12 is secured to the base surface of the lock device A. A receiving plate 3 is mounted on the inner surface of a door B. A clamping screw rod 14 is threadably engaged with the nut 12 through the door B from a screw rod hole 5 in the center of the receiving plate 3. The lock device A is mounted to the door B by clamping the clamping screw rod 14. A collapsible handle is provided at the head 15 of the screw rod 14.
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