| 摘要 |
A bicycle safety turning device for installation upon a bicycle frame lower cross bar adapted to be engaged by the bicycle front wheel fork shoulder to limit the front fork from turning so far to the left or right as to be at a right angle to the forward movement of the bicycle and cause the bicycle to jackknife while riding. More specifically, the bicycle safety turning device consists of a pair of clamp members adapted to surround the bicycle frame lower cross bar, capped with clamp plates, and a pair of bolts bringing the two clamp plates and clamp members together, the bolts also holding a striker plate against which the front fork shoulder comes in contact after the front fork has turned through an arc of 35 to 45 degrees as desired. Encountering the striker plate, the fork is prevented from further turning. The clamp members are secured against the bicycle frame lower cross bar by a frictional fit, and in addition, by a plurality of ram darts, the point of which is forced into the cross bar by tightening the bolts residing upon the clamp plates which bring the clamp members together. Alternate embodiments provide a striker bar adapted to prevent turning of differently constructed bicycle front wheel forks and modifications for mounting the invention on the fork shaft bearing tube with a striker plate dropping down to be engaged by the front wheel fork shoulder.
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