Title:
CYLINDER LOCK
Document Type and Number:
Japanese Patent JP2015140576
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a cylinder lock that has a simple structure and that can leave a use history of an emergency key.SOLUTION: A cylinder lock comprises: a plug 3 that is fitted with a tumbler pin 1 and a lock tumbler 2; and a cylinder case 5 into which the plug 3 is inserted and which includes a drive pin 4 for urging the tumbler pin 1 in the central direction of the plug 3 via the lock tumbler 2 in an initial rotation position of the plug 3. An outer peripheral edge of the plug 3 is provided with a fitting recess 6 into which the lock tumbler 2 is fitted in the state of closing a rotation boundary between the plug 3 and the cylinder case 5 in an unlocking rotation position of the plug 3.
Inventors:
KATAYAMA SHINTARO
NAGATA YASUHIRO
NAGATA YASUHIRO
Application Number:
JP2014014144A
Publication Date:
August 03, 2015
Filing Date:
January 29, 2014
Export Citation:
Assignee:
ALPHA CORP
International Classes:
E05B27/08; E05B19/20; E05B65/02
Attorney, Agent or Firm:
Masao Yamakawa
Kawaoka Hideo
Kawaoka Hideo
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