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Patent Searching and Data


Title:
SIDE BAR CYLINDER LOCK
Document Type and Number:
Japanese Patent JPH0328474
Kind Code:
A
Abstract:

PURPOSE: To detect a regular key only through control of insertion by a method wherein a key is inserted and tumbler is moved to an antilock position, and a detecting switch is actuated by means of a side bar moved in linkage with movement of the tumbler.

CONSTITUTION: Notch parts 25 are formed in the different positions of a plurality of tumblers 19 to produce a key code. The tumbler 19 is loosely engaged internally of a slot 15 of a key cylinder 17 in a state to be energized outward through the force of a spring. The cylinder 17 is rotatably contained in a case 14, and a side bar 21 is loosely engaged internally of a hole part 16 of the cylinder 17 in a state to be energized in the direction of the tumbler 19. A key detecting switch 26 is mounted to an opening part 28 of of the case 14 and brought into contact with the bar 21. A regular key is inserted in a key hole 18 to match and move the tumbler 19, and the bar 21 is caused to enter the notch part 25 to detect it by means of a switch 26. This constitution effects detection without rotating the regular key.


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Inventors:
AKUTSU SHOJI
NISHINUKI YOSHIO
Application Number:
JP1989000160816
Publication Date:
February 06, 1991
Filing Date:
June 26, 1989
Export Citation:
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Assignee:
ALPHA CORP
NISSAN MOTOR
International Classes:
E05B29/02; E05B45/10; (IPC1-7): E05B29/02; E05B45/10