| 摘要 |
PURPOSE: A door lock is provided to be used without using a key and to reset a personal identification number of the door lock when necessary. CONSTITUTION: A door lock comprises a fixture(110) and a rotator(120). The fixture is fixed to an installation hole formed in a door and is composed of a fixing shaft(112) and a fixing plate(114). The fixing plate is adhered to the outer surface of the door. The rotator is composed of a rotary shaft(122) and a rotating plate(124). The rotary shaft is inserted into the fixing shaft. The rotating plate is rotatably installed in the fixture.
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