Abstract: The invention relates, in particular, to a drive unit for an electric bicycle, comprising an electric motor drive having a stator and a rotor, wherein the rotor can be rotated about a rotor axis, and comprising a housing part in which a bearing point for the stator is provided. The bearing point comprises a wall running around the rotor axis, which borders a receiving means for the stator. An edge region is formed on the wall, which extends in a circumferential direction around the rotor axis, and which projects axially in relation to the rotor axis and is surrounded by an encompassing portion of a component mounted on the housing part, so that the edge region is supported by a part of the encompassing portion in a direction pointing radially outwards relative to the rotor axis.

Abstract: A drive unit for an electric bicycle, having a housing, which holds an electric motor for power-operated generation of a motor torque, an output element for providing a driving torque for driving the electric bicycle, and which is operatively connected to the electric motor via an output shaft for transmitting the motor torque to the output element, wherein the output shaft has an inner section, which is in the interior of the housing and serves for receiving the motor torque from the electric motor, and an outer section, at which the output element for receiving the motor torque from the output shaft is arranged, wherein the housing has a housing opening through which the output shaft projects with the outer section out of the housing, and having a sealing element at the housing opening for sealing the interior of the housing at the output shaft.

Abstract: The proposed solution relates in particular to a circuit board assembly for a drive unit of an electric bicycle, said circuit board assembly comprising two interconnected circuit boards. The circuit board assembly comprises a circuit board holder to which one of the circuit boards is secured and by means of which the circuit boards are held with respect to one another at a distance specified by the circuit board holder.

Abstract: The proposed solution relates in particular to a drive housing for a drive unit of an electric bicycle, having—a bearing section that is intended to mount at least part of a motor of the drive unit in an interior of the drive housing,—a housing opening via which the interior is connected to an exterior surrounding the drive housing, and—a ventilation assembly on the housing opening and configured to allow air to flow from the interior into the exterior and to prevent liquid from penetrating from the exterior into the interior. The ventilation assembly comprises a carrier component, mounted on the housing opening and having a plurality of interconnected air guidance channels, at least one of which opens into the interior, and which are covered towards the exterior by a cover element fixed on the carrier component.

Abstract: The proposed solution relates in particular to a drive unit for an electric bicycle, comprising—at least one electromotive drive, —a bottom bracket spindle assembly and—a transmission assembly for transferring a drive torque generated by the electromotive drive to an output element of the bottom bracket spindle assembly, wherein the transmission assembly has a transmission carrier on which at least two interacting transmission elements are each mounted so as to be rotatable.