US 11,834,128 B2
Pedelec bottom-bracket drive unit
Dietmar Greven, Dormagen (DE); Kai Venhoff, Rhede (DE); Axel Hemsing, Duesseldorf (DE); and Peter Thiele, Lauffen A.N. (DE)
Assigned to SRAM, LLC, Chicago, IL (US)
Appl. No. 17/425,324
Filed by SRAM, LLC, Chicago, IL (US)
PCT Filed Dec. 19, 2019, PCT No. PCT/EP2019/086192
§ 371(c)(1), (2) Date Jul. 23, 2021,
PCT Pub. No. WO2020/151889, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 19153759 (EP), filed on Jan. 25, 2019.
Prior Publication US 2022/0089250 A1, Mar. 24, 2022
Int. Cl. B62M 3/00 (2006.01); B62K 19/34 (2006.01); B62M 6/40 (2010.01); B62M 6/55 (2010.01)
CPC B62M 3/003 (2013.01) [B62K 19/34 (2013.01); B62M 6/40 (2013.01); B62M 6/55 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A pedelec bottom bracket drive unit comprising:
a rigid drive housing; and
a tolerance compensation sheet-metal spring which is arranged to stand substantially in a vertical plane, the tolerance compensation sheet-metal spring comprising,
at least one fixing point at a housing side, the at least one fixing point comprising a fixing point traverse axis, the tolerance compensation sheet-metal spring being fixed to the rigid drive housing at the at least one fixing point at the housing side, and
at least one mounting point for fastening the tolerance-compensating sheet-metal spring to a pedelec-frame-side drive mount, the at least one mounting point comprising a mounting point traverse axis,
wherein,
the at least one mounting point is arranged offset with respect to a next adjacent fixing point of the at least one fixing point as viewed from the fixing point traverse axis and from the mounting point traverse axis,
the pedelec-frame-side drive mount comprises a receiving stop flange, and
the rigid drive housing comprises a drive housing stop flange which is directly fixable in a transverse direction to the receiving stop flange of the pedelac frame-side drive mount, the drive housing stop flange comprising a flange plane which is arranged in a vertical longitudinal plane which is offset by at least 10 mm in a traverse direction with respect to the tolerance compensation sheet-metal spring.