(19)
(11) EP 2 505 755 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.07.2014 Bulletin 2014/30

(43) Date of publication A2:
03.10.2012 Bulletin 2012/40

(21) Application number: 11166327.4

(22) Date of filing: 17.05.2011
(51) International Patent Classification (IPC): 
E05F 3/10(2006.01)
 E05F 3/12(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 30.03.2011 TW 100111087

(71) Applicant: Taiwan Daedalus Door Control, Co., Ltd.
Changhua County 520 (TW)

(72) Inventor:
  • Ho, Yuan-Cheng
    Tien-Chung Town 520, Changhua County (TW)

(74) Representative: Becker Kurig Straus 
Bavariastrasse 7
80336 München
80336 München (DE)

   


(54) Concealed door closer with adjustable back check


(57) A concealed door closer (10) with an adjustable back check includes a mount (20), a pivot unit (30) mounted to the mount, two damping units (40) connected with the pivot unit, two flow adjusting valves (50a, 50b) mounted in the mount, and a back check adjusting valve (60) mounted in the mount. An external force for opening door drives the pivot unit to rotate so as to actuate the damping units to move. The back check exerting on the door leaf during opening door can be adjusted subject to different conditions by controlling the position of the back check adjusting valve. As soon as the external force exerting on the door leaf for opening the door leaf is released, the door leaf will be gradually closed by the actuation of the damping units, and the speed at which the door closer closes the door can be adjusted by controlling the flow adjusting valves.







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Search report