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Patent Searching and Data


Title:
LOCKING DEVICE FOR DOOR
Document Type and Number:
Japanese Patent JP3266862
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To improve mergence obstructing force of a door bolt by abutting a drawing claw on a rear extending rod of a door bolt in a direction for obstructing mergence of the rod when the door bolt is buried in a forwardly protruding state.
SOLUTION: An engaging part 34B with a door bolt 3 of a drawing claw 34 for moving the door bolt 3 by operation of an operating member 9 is formed in a sector form. The drawing claw 34 abuts on a rear extending rod 3C of the door bolt 3 to prevent mergence of it when the door bolt 3 is buried in from forwardly protruding state thought it is in a unoperated state. Therefore, at the close of a door 2, even when a slotted screwdriver, etc., are inserted from a space from the door 2 and a door frame 4 to strike against the door bolt 3, and the door bolt is twisted, the door bolt cannot be buried in a easing. Accordingly, the door can be prevented from violently opening by a crime and an apery.


Inventors:
Mori, Toshihiko
Application Number:
JP1998000325324
Publication Date:
March 18, 2002
Filing Date:
November 16, 1998
Export Citation:
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Assignee:
SHUA SEISAKUSHO:KK
HINTO KINZOKU KK
International Classes:
E05C1/06; E05B47/00; E05B55/04; E05B65/06; (IPC1-7): E05C1/06; E05B47/00; E05B55/04; E05B65/06
Attorney, Agent or Firm:
安田 敏雄