US 11,927,040 B2
Apparatus for guiding rotation of gear hinge part in rotary door
Kwang-Seog Lee, Daegu (KR)
Assigned to FILOBE CO., LTD., Daegu South (KR)
Appl. No. 17/635,989
Filed by FILOBE CO., LTD., Gyeongsan-si (KR)
PCT Filed Aug. 18, 2020, PCT No. PCT/KR2020/010946
§ 371(c)(1), (2) Date Apr. 21, 2022,
PCT Pub. No. WO2021/034067, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 10-2019-0101986 (KR), filed on Aug. 20, 2019.
Prior Publication US 2022/0275673 A1, Sep. 1, 2022
Int. Cl. E05D 11/00 (2006.01); E05D 1/00 (2006.01); E05D 7/00 (2006.01)
CPC E05D 11/00 (2013.01) [E05D 1/00 (2013.01); E05D 7/009 (2013.01); E05D 11/0054 (2013.01); E05Y 2201/71 (2013.01); E05Y 2600/45 (2013.01); E05Y 2600/46 (2013.01); E05Y 2800/27 (2013.01); E05Y 2800/406 (2013.01); E05Y 2800/412 (2013.01); E05Y 2800/422 (2013.01); E05Y 2900/132 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An apparatus for guiding a stable rotating actuation of a gear hinge unit in a rotating door between a first support bracket (1150) fixedly connected to a supporting frame (1100) side of a door frame and a second support bracket (1250) fixedly connected to a door (1200) side in the gear hinge unit (1300) constituting the rotating door (1000),
in order to minimize a tensile stress generated in an upper part of the gear hinge unit (1300) above a neutral axis (a-a′) of the door (1200) and a compressive stress generated in a lower part of the gear hinge unit (1300) under the neutral axis (a-a′) of the door (1200) by a rotational moment applied to the gear hinge unit (1300) through the second support bracket (1250) due to the load of the door (1200), comprising:
a fixed first vertical support (1510) installed at a lower end of the supporting frame (1100) of the door frame, comprising a fixed end (1512) fixedly installed to the supporting frame (1100) of the door frame, and a first rotational guide body being placed in a center part of a trajectory arc of the rotational actuation of a gear portion (1250a) of the second support bracket (1250) of the door (1200) and having a first vertical contact surface (1510a), (1510b) corresponding to a trajectory arc of a rotational actuation of the gear portion (1250a) of the second support bracket (1250) of the door (1200); and
a rotating second vertical support (1520) installed at a lower end of the door (1200), comprising a fixed end (1522) fixedly installed to the door (1200), and a second rotational guide body being placed on the trajectory arc of the rotational actuation of the gear portion (1250a) of the second support bracket (1250) of the door (1200) and having a second vertical contact surface (1520a), (1520b) in line contact with a first vertical contact surface (1510a), (1510b) corresponding to the trajectory arc of the rotational actuation of the gear portion (1250a) of the second support bracket (1250) of the door (1200).