| 摘要 |
A multiple sprocket assembly includes one or more sprocket subassemblies. Each sprocket subassembly includes a spider-type sprocket support which supports first and second sprockets. The sprocket support includes a boss and a plurality of supporting arms extending radially outward from the boss. Each supporting arm includes a first mounting surface and a second mounting surface opposite the first mounting surface in an end region of the supporting arm. The first sprocket is mounted to the first mounting surface of each supporting arm, and the second sprocket is mounted to the second mounting surface of each supporting arm. A difference between a number of teeth on the first sprocket and a number of teeth on the second sprocket is small, e.g., from one to three teeth. A fastening means in the form of an attachment pin which extends through a first sprocket opening in the first sprocket, a second sprocket opening in the second sprocket, and an attachment opening in a corresponding supporting arm fastens the first sprocket and the second sprocket to the respective first mounting surface and second mounting surface. One or more third sprockets may be disposed in a row with the first sprocket and the second sprocket.
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