| 摘要 |
PURPOSE: A lever type tube door lock is provided to make the door lock open and close regardless of locking and unlocking of the door lock at the inside and to open the door lock only using defined key upon unlocking of the door lock at the outside. CONSTITUTION: A lever springs(18) for restitution operation are installed on out and in bushings(3,25) by out and in spring supports(12,31) elastically upon angle movement of the in and out levers(1,23). A cylinder set(5) is mounted on a coupling hole(3a) of the out lever bushing(3) fixed to the out lever(1) and is capable of releasing by a key(4). A cylinder tail rod(6) is installed on rear side of the cylinder set(5) by a cylinder tail rod spring(22) and a locking cam(7) elastically. A coupling hole into which the header of a shaft(17) inserted is forming on the locking cam(7). A locking lumbar region on which the cylinder tail road(6) is locked is formed on rear side of the locking cam(7).
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