Belt pulley
AssigneeRobert Bosch GmbH
InventorRudiger Sohnle
Life of this patent
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Abstract
To lower the cost and weight of a belt pulley and permit its installation without the use of large numbers of spacer discs, the belt pulley is composed of two substantially identical stamped sheet metal halves which are so configured as to define a hub region when assembled. One or both of the pulley halves may be provided with a radially inwardly extending nose which engages a key-way in the shaft on which it is mounted, thereby preventing relative rotation of pulley and shaft.
Claims6
A belt pulley including a hollow hub region having a central opening for receiving a shaft and an outer beltcarrying region, said belt pulley being formed by mating juxtaposition of two substantially identical pulley halves, each of said pulley halves (1a, 1b) having an inner bulge in contact with the inner bulge of the other defining said hub region;
- wherein said bulges in each of said pulley halves (1a, 1b) includes
- a first, outer axially extending surface (5a) attached to said outer belt-carrying region, the first axially extending annular surface, having first end portions in contact with each other,
- a second diametrically extending outer annular surface (5b), the outer edge of which is connected to the second end portions of said first annular surface (5a) and which extends in a plane substantially parallel to the plane of the pulley, and a cylindrical axially extending inner annular surface (5c), one edge of which is connected to said second annular surface (5b), said cylindrical inner annular surfaces (5c) of said halves being in contact with and abutting against each other, being substantially coaxial with a shaft and defining the opening for a shaft in said hub region.
Dependencies are inferred from the claim text.