Title:
DISK TUMBLER LOCK, AND KEY FOR DISK TUMBLER LOCK
Document Type and Number:
Japanese Patent JP2018178624
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a disk tumbler lock and a key for the disk tumbler lock that can achieve further prevention of picking and an increase in the number of different keys.SOLUTION: A movable obstacle piece Z is divided into two in a state where the two are opposite, and has a guided part formed slantingly at a part of each facing surface on its inner end side. A tumbler guide cut of a duplicate key Y is a first cut in the shape of a recess that is formed on one side of the upper surface of the plane part of a blade from a lateral part in the blade width direction, and a second cut in the shape of a recess that is formed on one side of the lower surface of a plane part corresponding to substantially the back position of the first cut. When the blade of the duplicate key Y is inserted into a key hole, each of the two-divided movable obstacle pieces Z are resistant to spring force of tumbler springs 42 and are guided by a pair of guide rods in the same direction. Also, the guided part of the movable obstacle piece Z engages with the tumbler guide cut of the duplicate key Y, and this causes each unlocking reception recess 48 on an outer end side of the two-divided movable obstacle piece to match an engagement plate part 12b on an inner end side of a locking bar 12.SELECTED DRAWING: Figure 11
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Inventors:
TANAKA KENICHI
KAWAI NOBUYUKI
MORITA HIDEKI
KAWAI NOBUYUKI
MORITA HIDEKI
Application Number:
JP2017082614A
Publication Date:
November 15, 2018
Filing Date:
April 19, 2017
Export Citation:
Assignee:
MIWA LOCK KK
International Classes:
E05B29/06; E05B19/06
Attorney, Agent or Firm:
Mitsuyasu Miura
Takayuki Kayahara
Takayuki Kayahara