Title:
LOCK CORE DEVICE FOR ANTITHEFT TUMBLER LOCK
Document Type and Number:
Japanese Patent JP3457954
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lock core device for an antitheft tumbler key preventing unlocking by malfeasant use.
SOLUTION: In the tumbler lock with a pin, one or more of side pinholes 54 and a horizontal hole 55 communicated with the side pinholes are bored to an external cylinder 5, and the side pinholes and pinholes 52 are arranged so as to be radially displaced by the center of a circle of a lock core hole 51 while the horizontal hole and the side pinholes are formed so as to be crossed. A key way 62 and a plurality of pinholes 61 are formed to a lock core 6. A retaining body 8 is charged into the side pinholes of the external cylinder and the retaining body is abutted against the outer peripheral wall of the lock core, and proceeds into the pinholes of the lock core when the pin of the lock core is not positioned at a correct place by the malfeasant use of the key, malfeasant unlocking is prevented while the front end of the horizontal pin 91 charged into the horizontal hole of the external cylinder is abutted against the retaining body, the retaining body is fixed at the place of the pinhole when the retaining body drops into the pinholes of the lock core, and the rotation of the lock core is prevented.
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Inventors:
Kure Armor
Shigeaki Huang
Shigeaki Huang
Application Number:
JP2001090705A
Publication Date:
October 20, 2003
Filing Date:
March 27, 2001
Export Citation:
Assignee:
Kure Armor
International Classes:
E05B15/00; E05B27/00; E05B27/04; E05B27/10; E05B29/14; (IPC1-7): E05B15/00; E05B27/04
Domestic Patent References:
| JP3137376A |
Attorney, Agent or Firm:
Sumiko Shimosaka (1 person outside)