Title:
LOCKING DEVICE, UNLOCKING KEY, AND DOOR
Document Type and Number:
WIPO Patent Application WO/2023/058707
Kind Code:
A1
Abstract:
Provided is a locking device that allows a plurality of cylinder locks having different security levels to be locked and unlocked with the same unlocking key. A locking device comprising: a cylinder lock having an outer cylinder, and an inner cylinder that is rotatably fit with the outer cylinder; and an unlocking key corresponding to a key hole formed in the inner cylinder, wherein a projecting part is formed at the back end of the key hole, and a positioning recess part that can be fit with the projecting part is formed at the front end of the unlocking key.
Inventors:
AKIYAMA FUMINORI (JP)
MITSUHASHI TAKASHI (JP)
MITSUHASHI TAKASHI (JP)
Application Number:
PCT/JP2022/037394
Publication Date:
April 13, 2023
Filing Date:
October 06, 2022
Export Citation:
Assignee:
LIXIL CORP (JP)
International Classes:
E05B19/08; E05B19/20; E05B27/10
Foreign References:
| CN203584034U | 2014-05-07 | |||
| EP3366870A1 | 2018-08-29 | |||
| EP3623549A1 | 2020-03-18 | |||
| JP2002213120A | 2002-07-31 | |||
| JPS5659975A | 1981-05-23 |
Attorney, Agent or Firm:
SHOBAYASHI Masayuki et al. (JP)
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