Starter pulley arrangement
AssigneeHusqvarna AB
InventorsPeter Björkman, Alex Rasooli
Life of this patent
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Abstract
The present disclosure relates to a starter pulley arrangement for an internal combustion engine. The arrangement comprises a cord drum (1) configured to house a starting rope wound thereon, a driver (3) configured to interact with a flywheel (5) or other part connected to an engine crankshaft, and a torsion spring (7) connecting the cord drum (1) to the driver (3), such that the cord drum can resiliently urge the engine crankshaft via the driver. The torsion spring (7) is tensioned in a resting position where the driver does not influence the crankshaft. This provides an improved resistance against wear on the parts of the starter pulley arrangement.
Claims9
A starter pulley arrangement for an internal combustion engine, the arrangement comprising a cord drum configured to house a starting rope wound thereon, a driver configured to interact with a flywheel or other part connected to an engine crankshaft, and a torsion spring connecting the cord drum to the driver, such that the cord drum resiliently urges the engine crankshaft via the driver,
- wherein the torsion spring is tensioned in a resting position where the driver does not influence the engine crankshaft,
- wherein the driver is provided with a driver projection facing the cord drum,
- wherein the cord drum comprises a limiting projection and a biasing projection, and
- wherein at least one slanted surface is provided on the biasing projection and/or the driver projection, such that the driver projection climbs on the biasing projection during assembly while pre-tensioning the torsion spring.
Dependencies are inferred from the claim text.