Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LOCKOUT PREVENTING DEVICE FOR THUMB-TURN LOCK OF INTERIOR DOOR
Document Type and Number:
Japanese Patent JP2009221840
Kind Code:
A
Abstract:

To prevent lockout when closing a door, to enable easy locking, to facilitate assembling by effectively utilizing a space in a lock box.

An operating rod 15A of a latch 11 is horizontally disposed in the central part of an internal space of a lock box 5. A latch cam 70A whose tip is engaged with the operating rod is rotatably installed at either the upper side or the lower side of the internal space on the basis of the operating rod. At the opposite side of the latch cam, a release component 31A for a thumb-turn top joint 50A and a lock piece 60A for the latch cam are installed from the front 7 side toward the back wall 8a side of the lock box. When an interior door is closed, the latch touches the edge of a door frame and moves backward to cooperatively rotate the release component according to the backward movement of the operating rod, thereby displacing the rotational position of a driving arm of the thumb-turn top joint, and rotating the lock piece for the latch cam to release one engaging part 65A of the lock piece from the engaged part 73A at the tip of the latch cam.


Inventors:
KINOSHITA TAKUO
Application Number:
JP2009000125254
Publication Date:
October 01, 2009
Filing Date:
May 25, 2009
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MIWA LOCK KK
International Classes:
E05B55/14; E05B65/06
Domestic Patent References:
JPH04128483A1992-04-28
JPH0929733A1997-02-04
JPH0671811U1994-10-07
JPH04128483A1992-04-28
JPH0929733A1997-02-04
Attorney, Agent or Firm:
三浦 光康