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Patent Searching and Data


Title:
AUTOMATIC LOCKING DEVICE
Document Type and Number:
Japanese Patent JPH01223281
Kind Code:
A
Abstract:

PURPOSE: To switch the automatic locking and general locking in one touch and simplify the door opening operation by constituting a locking device so that the automatic locking or general locking can be switched by throwing up or down the lug of a change knob provided on the end face of a door.

CONSTITUTION: When the lug 20 of a change knob 14 is thrown downward, a change plate 10 is moved in the separating direction from a swing plate 27, and the slant face 28 of the plate 27 is located at the retreat path of a trigger bolt 7, thus allowing the automatic locking. When the lug 20 is thrown upward, the plate 10 presses the plate 27, the slant face 28 of the inclined plate 27 is located at the position not pressed by the trigger bolt 7, a cam plate 29 is not rotated when a door is closed, thus the locking is not allowed. The lock is kept at the released state when the plate 29 is rotated by the thumb turn or a key and the trigger bolt 7 is submerged while the door is in the closed state.


Inventors:
OSADA SHUNICHI
Application Number:
JP1988000044202
Publication Date:
September 06, 1989
Filing Date:
February 29, 1988
Export Citation:
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Assignee:
KOKUSAN KINZOKU KOGYO KK
International Classes:
E05B55/00; E05B55/12; (IPC1-7): E05B55/00