Title:
AUTOMATIC OPENING/CLOSING DEVICE FOR DOOR CLOSURE HAVING CENTRALLY ARRANGED FOLLOWING SHAFT
Document Type and Number:
WIPO Patent Application WO/2023/146033
Kind Code:
A1
Abstract:
Disclosed is an automatic opening/closing device for a door closure, wherein the direction in which a swing-type fire door is opened is determined in conformity with the direction in which entering/exiting people move, and the fire door is closed when there are no entering/exiting people. To this end, provided is an automatic opening/closing device for a door closure, comprising: a housing having a following shaft through-hole formed at the center of the upper portion thereof; a driving motor installed inside the right side of the housing; an electronic clutch installed inside the left side of the housing; a driving power transfer means installed between the driving motor and the electronic clutch so as to transfer torque from the driving motor to the electronic clutch; a following shaft portion installed at the center of the housing and connected to the electronic clutch such that the following shaft is exposed to the outside of the housing through the following shaft through-hole; a power supply for supplying an electric current to the driving motor and the electronic clutch; and a controller for controlling operations of the power supply according to signals input from the outside. According to the present invention, the following shaft protrudes from the housing and is arranged at the center of the housing such that same can be freely installed on the left side, the right side, or any part of the fire door, thereby removing restrictions on the installation location, and thus improving the usability.
Inventors:
CHOI YONG HWAN (KR)
Application Number:
PCT/KR2022/007706
Publication Date:
August 03, 2023
Filing Date:
May 31, 2022
Export Citation:
Assignee:
DOORS CO LTD (KR)
International Classes:
E05F15/614; E05F3/22; E05F15/72; E05F15/73; E05F15/77
Foreign References:
| JP2008095322A | 2008-04-24 | |||
| KR102247217B1 | 2021-05-06 | |||
| KR101999202B1 | 2019-07-11 | |||
| KR102227986B1 | 2021-03-15 | |||
| KR20180120005A | 2018-11-05 | |||
| KR20130113093A | 2013-10-15 |
Attorney, Agent or Firm:
LEE, Jong Hyuk (KR)
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