(19)
(11) EP 2 236 717 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.05.2016 Bulletin 2016/20

(43) Date of publication A2:
06.10.2010 Bulletin 2010/40

(21) Application number: 10159007.3

(22) Date of filing: 01.04.2010
(51) International Patent Classification (IPC): 
E05F 3/00(2006.01)
E05F 15/12(0000.00)
 E05F 3/22(2006.01)
(84) Designated Contracting States:
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 SE SI SK SM TR
Designated Extension States:
AL BA ME RS

(30) Priority: 03.04.2009 NL 2002710

(71) Applicant: KONE Corporation
00330 Helsinki (FI)

(72) Inventor:
  • Wien, Dirk Adrian Cornelis
    3906 BH, Veenendaal (NL)

(74) Representative: EP&C 
P.O. Box 3241
2280 GE Rijswijk
2280 GE Rijswijk (NL)

   


(54) Door drive having auxiliary drive mechanism


(57) The invention relates to a drive unit (16) for a leaf (10) of a door or window with an additional closing device which is active across a limited area of the opening angle of the leaf around 0°. More particularly, the additional closing device comprises an additional closing mechanism (100) with a shaft engagement means (104) provided on the drive shaft (20), an intermediate arm (108) which is rotatable about a swinging shaft (110) being situated at a distance from and parallel to the drive shaft (20) and having a first engagement means (130) arranged on a first arm end (106) so as to be able to engage with said shaft engagement means (104), and a spring construction, a first end (116) of which is hingedly connected to a second arm end (112) of the intermediate arm (108) and a second end (122) of which is hingedly arranged at a fixed position, in which the shaft engagement means (104) and the first engagement means (106; 130) of the intermediate arm (108) engage with one another across a predetermined area of the rotation angle of the drive shaft (20).







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Search report