Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The drive 10 comprises a piston 16 slidably guided in a housing 12, a spring 14, an output shaft 20 and a rack-and-pinion gear 18 with an out-of-round pinion 22 with teeth 24 and counter-teeth 26 on the piston side, wherein the effective lever arm length of the pinion teeth decreases upon opening of the sash up to a first opening angle, then after a second opening angle the length increases abruptly with an increasing opening angle. The line of action of a pair of teeth is produced by a profile shift varying when rolling over the curve. At least one tooth pair may be provided with pressure-side tooth flanks that are extended in comparison with the flanks of the remaining teeth pairs for generating the abruptly increasing lever arm length. The pinion and piston may be driven in both directions and the piston may be hollow with internal toothing.
The drive 10 comprises a piston 16 slidably guided in a housing 12, a spring 14, an output shaft 20 and a rack-and-pinion gear 18 with an out-of-round pinion 22 with teeth 24 and counter-teeth 26 on the piston side, wherein the effective lever arm length of the pinion teeth decreases upon opening of the sash up to a first opening angle, then after a second opening angle the length increases abruptly with an increasing opening angle. The line of action of a pair of teeth is produced by a profile shift varying when rolling over the curve. At least one tooth pair may be provided with pressure-side tooth flanks that are extended in comparison with the flanks of the remaining teeth pairs for generating the abruptly increasing lever arm length. The pinion and piston may be driven in both directions and the piston may be hollow with internal toothing.
Drive for a door or window sash
BENJAMIN WOERNER (Autor:in)
07.10.2020
Patent
Elektronische Ressource
Englisch
IPC:
E05F
DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION
,
Vorrichtungen zum Bewegen der Flügel in die Offen- oder Schließstellung