摘要 |
PROBLEM TO BE SOLVED: To increase the load of a lock spring and to improve the operability of a lock knob. SOLUTION: The operability in the turning initial period of the lock knob 24 is excellent, and when the lock knob 24 is turned for a fixed amount and a lock lever 21 starts sliding, rotating movement is powerful. Further, when the lock knob 24 starts to rise, a hand is surely put in an opening part 23 for operation and the operability is improved.
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