| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for locking an operation handle for a switch, comprising two components not allowing easy separation, and capable of being installed to a handle without forming a through hole in the handle. SOLUTION: A return spring is inserted through a detachment prevention part of a lock member by bending a spring part of the return spring. Once inserting the return spring through the detachment prevention part, the return spring is not easily detached. By pulling the return spring in an inserted-through direction, the return spring is returned to a state before a state that the return spring is bent. A groove part of a protrusion of a cover and a hole formed in the handle are aligned in a desired position of the handle, so that the return spring is hung and fixed to the hole through the groove part. The return spring is stored in the lock member, so that opening/closing operation can be forbidden. COPYRIGHT: (C)2006,JPO&NCIPI
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