Patent ID: 9663970
Date: 2017-05-30
CPC Classifications: E05B,Y10T

Claim:
1. A lock comprising: a casing having a room defined therein, two apertures defined through the casing and communicating with the room; a core located within the room and having a keyhole defined in a first end thereof which is exposed from the casing, a protrusion extending from a second end of the core, a resilient member mounted to the protrusion; a driving member having a first end thereof mounted to the protrusion of the core, the resilient member biased between the first end of the driving member and the core, a second end of the driving member having at least one slide slot defined therein; a rotary member located in the room and having a tubular member extending from a first end thereof, the tubular member extending through the driving member and connected to the protrusion of the core, an engaging member extending laterally from the tubular member, the engaging member being received in the at least one slide slot when the rotary member is rotated by rotating the core, a second end of the rotary member having an inclined face; a push member located in the room and having a first end thereof contacting the inclined face of the rotary member, a second end of the push member extending through one of the two apertures corresponding thereto, an assembling hole defined laterally in the first end of the push member, the casing having an insertion extending from an inner wall thereof, the insertion inserted into the assembling hole, a first spring located in the assembling hole and biased between the insertion and an inner end of the assembling hole, the first spring pushing the push member to contact the rotary member, a reception hole defined in the second end of the push member; a dial unit located in the room and located beside the core, the dial unit having a rod, at least three dial disk units and a second spring, the rod located in the room and having a head and a shank, the head located corresponding to the other aperture and having a positioning slot defined in a top thereof, the shank extending from a bottom of the head, the dial disk units mounted to the shank and each having a dial disk and a sleeve which is mounted to the shank, the dial disk units being overlapped to each other, the sleeve of each dial disk unit having a tube and a disk from which the tube extends, at least two lateral parts connected to a connection portion between the tube and the disk, the dial disks respectively mounted to the sleeves, each dial disk having multiple number protrusions extending therefrom, the number protrusions of each dial disk being exposed beyond the casing, each dial disk having a mounting hole defined centrally therethrough, multiple spaced ridges extending from an inner periphery of each mounting hole, the at least two lateral parts of each sleeve being engaged with gaps between the ridges, each disk having a recess defined radially therein, the second spring mounted to the shank of the rod and biased between the inner wall of the room and the disk of the sleeve that is located at the lowest position of the overlapped sleeves; a resilient plate located in the room and having fingers resiliently engaged with notches defined between the number protrusions of the dial disks; a pawl member located in the room and pivotably connected between the driving member and the dial unit, the pawl member having multiple pawls which are located corresponding to the recesses of the disks, an operation member connected to the pawl member and located beside the driving member, the operation member having a recessed area defined therein which faces the driving member, the driving member having a block which is engaged with the recessed area, when the driving member is rotated, the operation member rotates the pawl member so that the pawls are engaged with the recesses to restrict rotation of the dial disks, a third spring biased between the operation member and the inner wall of the room of the casing, and a shackle having a first end inserted into the reception hole of the push member, a second end of the shackle extending through the other aperture and inserted in the positioning slot of the head of the dial unit, when a transportation security administration key is inserted into the keyhole of the core and rotates the core clockwise, the rotary member contacts the second end of the driving member until the inclined face of the rotary member faces the push member, and the first spring in the push member pushes the push member toward the rotary member, the first end of the shackle is removed from the reception hole of the push member to unlock the lock, when a correct key is inserted into the keyhole of the core and rotates the core counter clockwise, the rotary member is rotated counter clockwise and the engaging member is rotated to face the at least one slide slot, the driving member is pushed upward by the resilient member and contacts the rotary member to remove the block away from the recessed area, the dial disks are rotated until the pawls of the pawl member are engaged with the recesses of the sleeves to set correction combinations.