Title:
CYLINDER LOCK SET
Document Type and Number:
Japanese Patent JP2015101945
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a cylinder lock set of high operational reliability.SOLUTION: The cylinder lock set comprises a cylinder lock formed by inserting a plug 3 having a tumbler pin 1 and an intermediate tumbler 2 into a cylinder case 4 and energizing the tumbler pin in the plug center direction via the intermediate tumbler by a drive pin 5 installed in the cylinder case in an initial rotation position of the plug, a normal use key 7A and an emergency key 7B, and the normal use key is provided with an unlocking recessed part 10 capable of rotating the plug by making a boundary between the intermediate tumbler and the drive pin correspond to a rotation boundary between the plug and the cylinder case when inserted into the plug, and the emergency key is provided with an unlocking recessed part for making a scooping part of the intermediate tumbler 2 correspond to the rotation boundary between the plug and the cylinder case, respectively, and when returning the plug to the initial rotation position after fitting operation to a fitting recessed part 9 by rotary operation to the plug by the emergency key, the rotational operation by the normal use key and the emergency key is prohibited by blocking up the rotation boundary by the drive pin.
Inventors:
SASAKI KOHEI
Application Number:
JP2013245956A
Publication Date:
June 04, 2015
Filing Date:
November 28, 2013
Export Citation:
Assignee:
ALPHA CORP
International Classes:
E05B65/02; E05B19/06; E05B19/20; E05B29/08
Attorney, Agent or Firm:
Masao Yamakawa
Kawaoka Hideo
Kawaoka Hideo