| 摘要 |
PURPOSE: A door lock is provided to have a secondary locking unit which works when a main locking unit is broken and to improve safety and reliability of the door lock. CONSTITUTION: A door lock comprises an operation lever(2), a pivot axis(22), a rotary guiding piece(3) and an intermittence rod. The operation lever comprises a functioning handle(21). A pair of fixed protrusion pins(221) is formed on the pivot axis. The rotary guiding piece is fixed and coupled in the pivot axis of the operation lever. The rotary guiding piece comprises a base aperture(31), a power transmission protrusion(32) and an elasticity induction unit(33). The intermittence rod is meshed with the power transmission protrusion. The intermittence rod comprises a transfer guiding hole(41) and a power connection hole(42).
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