| 摘要 |
Each one of a pair of pivot members is provided at the forward end portion thereof with a boot toe holding member and pivotably connected at the rear end portion thereof to a base plate by a first pin. Each one of a pair of links is pivotably connected at the forward end portion thereof to a pivot member by a second pin, wherein the first pin for the pivot member is located outwardly and rearwardly of the second pin. Each link is urged forwardly by a spring acting on the outer rear end thereof.
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