| 摘要 |
PROBLEM TO BE SOLVED: To provide a disk tumbler lock allowing an inner cylinder and an outer cylinder to be easily assembled in manufacturing to improve assembling work efficiency. SOLUTION: This disk tumbler lock has an outer cylinder 3 having an inner surface recessed part 3a inside, and an inner cylinder 2 rotatably inserted in the outer cylinder and having inside a plurality of tumbler insert holes for inserting a plurality of disk tumblers 4 arranged vertically to the axial direction. A drum cover 5 is fitted to the outer peripheral part of the inner cylinder 2 to cover the top opening part 24 of the tumbler insert hole, and the drum cover 5 is provided with a projecting hole 5b for the tumbler formed in a position opposite to the tumbler insert hole to project only the tip part of the disk tumbler 5.
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