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1. (WO2017149132) DRIVE ASSEMBLY OF A HATCH ASSEMBLY OF A MOTOR VEHICLE

Pub. No.:    WO/2017/149132    International Application No.:    PCT/EP2017/055033
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Sat Mar 04 00:59:59 CET 2017
IPC: E05F 15/622
E05F 1/10
Applicants: BROSE FAHRZEUGTEILE GMBH & CO. KG, BAMBERG
Inventors: WITTELSBÜRGER, Michael
KRÜGER, Harald
BUCHHEIM, Michael
SEIDL, Matthias
BELZ, Christoph
Title: DRIVE ASSEMBLY OF A HATCH ASSEMBLY OF A MOTOR VEHICLE
Abstract:
The invention relates to a drive assembly of a hatch assembly (2) of a motor vehicle, wherein the hatch assembly (2) has a hatch (3) that can be adjusted between an open position and a closed position, wherein the drive assembly (1) has two mechanical drive connections (4, 5) for the driving connection of the drive assembly (1) and a coil spring assembly (8) for generating a total spring force (9) between the two drive connections (4, 5). According to the invention: the coil spring assembly (8) has at least one single-piece coil spring element (10), in particular a coil compression spring element, having a coil spring axis (11); an adjustment, in particular a closing adjustment of the hatch (3) involves a deflection of the coil spring element (10); and the coil spring element (10) has a progressive spring behaviour, at least over a deflection section, in order to generate the curve of the total spring force (9) having different curve gradients.