Title:
SELF-LOCKING DOORKNOB LATCH
Document Type and Number:
WIPO Patent Application WO/2020/017685
Kind Code:
A1
Abstract:
The present invention comprises: a clamping portion having a front end configured to move horizontally into or out of a catch of a doorframe while being supported by an elastic force, the clamping portion having a protrusion formed to protrude from one end thereof and having a clamping groove formed on the outer end thereof; a locking portion configured to move perpendicularly to the clamping portion while being supported by an elastic force, the locking portion having a locking protrusion formed on an end portion thereof to be clamped into or separated from the clamping groove; a locking force generating/releasing portion configured such that, if the clamping portion moves backward while the locking force generating/releasing portion interferes with an engaging protrusion provided on the upper end of the locking protrusion so as to prevent the locking portion from moving toward the clamping portion, the locking force generating/releasing portion interworks with the engaging protrusion and thus releases the interference therewith; a locking portion moving member provided to surround an end portion of the clamping portion and that of the locking portion such that, when moving backward, a sloping surface provided on an end portion of the locking portion moving member moves the engaging protrusion of the locking portion in the outward direction and causes interference between same and the locking force generating/releasing portion; and a rotating portion installed on the end portion of the locking portion moving member such that, when the door is opened, the rotating portion rotates and moves the locking portion moving member backward. According to the present invention, if the door is closed, the clamping portion moves backward, and the lowered locking portion locks the clamping portion, thereby closing the door. If the rotating portion is rotated by turning the handle to open the door, the sloping surface of the locking portion moving member, which interworks therewith, lifts the locking portion and allows the clamping portion to move forward/backward without clamping. As such, the present invention is advantageous in that same can be implemented in a simple structure, and maintenance is easy.
Inventors:
KIM YOUNG SOO (KR)
Application Number:
PCT/KR2018/008803
Publication Date:
January 23, 2020
Filing Date:
August 02, 2018
Export Citation:
Assignee:
KIM YOUNG SOO (KR)
International Classes:
E05B63/20; E05B1/00; E05B15/04
Foreign References:
| KR100763821B1 | 2007-10-12 | |||
| KR101810480B1 | 2017-12-20 | |||
| KR101109413B1 | 2012-01-31 | |||
| KR20070068640A | 2007-07-02 | |||
| KR20180055426A | 2018-05-25 |
Attorney, Agent or Firm:
CHEON JEE INTERNATIONAL PATENT & LAW (KR)
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