| 摘要 |
Rocker arm assembly for the rear derailleur of a bicycle, comprising an outer plate ( 12 ) carrying a pivot pin ( 32 ), an inner plate ( 10 ) and a pair of idle transmission wheels ( 14 ) arranged between the outer plate ( 12 ) and the inner plate ( 10 ). The inner plate is made of metallic material and the outer plate is made of a structural fiber fabric incorporated in a thermoplastic material matrix.
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