| 摘要 |
PROBLEM TO BE SOLVED: To make a cylinder lock mechanism hard to unlock illegally by eliminating a defect such that picking is easily undergone by a lock mechanism in which tumbler pieces are disposed in a cylinder body at even intervals. SOLUTION: This cylinder lock mechanism is characterized as follows: partitioning walls 5 of fitting holes 3 for the tumbler pieces 4 provided in a multistage manner in a side surface of the cylinder body 1 along an axial direction are formed in such a manner that a thickness of the partitioning wall 5 is made properly unequal in the front and rear thereof; and fitting intervals of the tumbler pieces 4 fitted into the cylinder body 1 are made uneven.
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