Title:
CRIME-PREVENTING LOCK STRUCTURE
Document Type and Number:
Japanese Patent JP3765100
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a crime-preventing lock structure capable of securely preventing picking damage by a simple and low-cost structure in which angular positions of cylinder parts are varied in disposition of them, and in which a shutter mechanism part is provided between the cylinder parts to shield a keyhole part.
SOLUTION: The keyhole parts 28 and 37 in a first cylinder part 24 and a second cylinder part 25 pivotally supported in a subject part 23 to installation are disposed to be inclined for an angle of θ1 to each other. Between the first cylinder part 24 and the second cylinder part 25, the shutter mechanism part 26 is provided, and when a key is not inserted, the keyhole part in the second cylinder part 25 is shielded. As the first cylinder part 24 is rotated with the key, the shutter mechanism part 26 is rotated, which makes it possible to insert the key into the keyhole part 37 in the second cylinder part 25. An in/out lock mechanism part is actuated by this rotation, thereby a door or the like is opened/closed.
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Inventors:
Toshio Watanabe
Application Number:
JP2002200772A
Publication Date:
April 12, 2006
Filing Date:
July 10, 2002
Export Citation:
Assignee:
Toshio Watanabe
International Classes:
E05B17/18; E05B35/14; (IPC1-7): E05B17/18
Domestic Patent References:
| JP491827Y1 | ||||
| JP2003201779A |
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