Hub of a fan wheel for an internal combustion engine
AssigneeAndreas Stihl AG & Co. KG
InventorBernhard D{umlaut over (u)}rr
Life of this patent
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Abstract
The invention is directed to a hub unit of a fan wheel for an internal combustion engine having a crankshaft and a starter device. The hub unit has a wheel body made of plastic and a hub sleeve made of a high tensile strength material. The hub sleeve carries the wheel body and is held on the crankshaft to prevent rotation relative thereto and a clamping element axially fixes the hub sleeve on the crankshaft. A starter ring is concentric with the axis and is adapted for a clutch engagement with the starter device so as to be entrainable thereby. The starter ring and the hub sleeve are originally formed as a single piece to define a hub housing.
Claims19
A hub unit a fan wheel for an internal combustion engine having a crankshaft and a starter device, said hub unit comprising:
- a wheel body made of plastic;
- a hub sleeve defining an axis and being made of a high tensile strength material and carrying said wheel body;
- means for holding said hub sleeve on said crankshaft so as to prevent rotation relative thereto;
- a clamping element for axially fixing said hub sleeve on said crankshaft;
- a starter ring concentric with said axis and adapted for a clutch engagement with said starter device so as to be entrainable thereby;
- said starter ring and said hub sleeve being originally formed as a single piece to define a hub housing;
- said hub housing including a support shell for carrying said starter ring in axial spaced relationship to said hub sleeve;
- said hub housing has a periphery;
- and, wherein said hub unit further comprises a plurality of radially directed anchors formed on said periphery;
- and, said anchors extending radially beyond said starter ring and being disposed rotationally symmetric along said periphery.
Dependencies are inferred from the claim text.