| 摘要 |
A protective plate for attachment to a bicycle frame for guiding a chain includes a support body having a first side for facing laterally toward the bicycle frame, a second side for facing laterally away from the bicycle frame, a lower portion, and an upper portion. The lower portion of the first side of the support body is structured to align with a bottom bracket of the bicycle, and a frame attachment member is disposed on the upper portion of the support body for clamping the upper portion of the support body to the bicycle frame. A chain guiding abutment may be formed on the upper portion of the second side of the support body for guiding the chain as the chain shifts from a larger chainring to a smaller chainring.
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