| 摘要 |
The disclosure relates to a cylinder lock resistant to picking (10) which comprises a cylindrical housing (14); a core (12) which is rotatably mounted in the housing, thereby defining a shear line (20); a first tumbler (28) slidably disposed in a first aperture; means (26) for moving the first tumbler between a locked and an unlocked position; a second tumbler (32) slidably disposed in a second aperture; and means (34) for moving the second tumbler between a locked and an unlocked position. When the lock is in the locked position, the first tumbler (28) extends across the shear line into the first aperture of the core. When a correct key is inserted into the keyway, the first tumbler (28) is urged completely into the housing above the shear line. The second tumbler (32) is arranged, when the lock is in the locked position, to extend across the shear line and when the correct key is inserted, the second tumbler is urged completely into the core below the shear line. The first and second tumblers are configured such that the first and second tumblers resist radial movement if a tensioning movement is applied between the core and the housing. <IMAGE>
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