Cage freewheel
AssigneeRINGSPANN GmbH
InventorThomas HEUBACH
Life of this patent
Estimating the term…
Abstract
A cage freewheel for installing in the clamping gap between a shaft and a hub, in particular in the drive of an e-bike, having a sprag cage which, in one embodiment, is fitted continuously in the circumferential direction with sprags arranged pivotably in the sprag cage, with the sprags being loaded resiliently in the engagement direction. Here, a bearing disk is arranged axially adjacent to the sprag cage. In a further embodiment, the cage ring is fitted consecutively in the circumferential direction both with bearing rollers (4) and with sprags (5). In addition, a shaft and hub arrangement and to an e-bike drive having a cage freewheel with the abovementioned features is also provided.
Claims27
A cage freewheel for installing in a clamping gap between a shaft and a hub, the cage freewheel comprising:
- a sprag cage (3) which is configured to fit in a circumferential direction in the clamping gap;
- sprags (5) arranged pivotably in the sprag cage (3), with the sprags (5) being loaded resiliently in an engagement direction;
- and
- a bearing disk (7) arranged axially adjacent to the sprag cage (3).
A shaft and hub arrangement, comprising:
- a hub (2);
- a shaft (1) which is rotatable relative to the hub;
- a cage freewheel arranged in a clamping gap between the shaft and the hub, the cage freewheel including a sprag cage (3) which is located in a circumferential direction in the clamping gap, sprags (5) arranged pivotably in the sprag cage (3), with the sprags (5) being loaded resiliently in an engagement direction, and a bearing disk (7) arranged axially adjacent to the sprag cage (3);
- and
- on one side adjacent to the cage freewheel there is a rolling contact bearing or plain bearing configured as a radial bearing and via which the shaft (1) and the hub (2) are mounted against each other.
An e-bike drive comprising:
- a drive shaft (1) with a bottom bracket (42), a sprocket (40), and a crankset (41), the drive shaft (1) being connected via a freewheel to a gearwheel (43) which, in turn, is attached via a reduction gearing (44) to an electric motor (45), the freewheel having a freewheel cage (3) which is fitted consecutively in a circumferential direction both with bearing rollers (4) and with sprags (5), and the sprags are loaded resiliently in a cranking direction, and
- the freewheel cage (3) has at least one axially projecting protrusion (3b) which engages in a form-fitting manner in an axially adjacent bearing disk (7) fixed in an axial direction, and is rotatable in relation thereto, but is locked in the axial direction.
Dependencies are inferred from the claim text.