| 摘要 |
PROBLEM TO BE SOLVED: To provide a door lock device of an insert type, capable of dispensing with fitting works so that unlocking from the outside is made difficult and preventing unlocking by a duplicate key or an exclusive unlocking tool special for a key expert, thereby strengthening locking. SOLUTION: A thumb turn for locking the inside of a door is turned 90-degree arc to lock, and then the thumb turn for locking is inserted in a groove to be fitted and fixed, thereby inhibiting turning of the thumb turn for locking.
|
