| 摘要 |
For adjustably moving a motorcycle windshield up and down with respect to a motorcycle cowling, there are employed a pair of drive ball assemblies each comprising a series of rigid plastic balls strung on a length of wire. The drive ball assemblies are slidably received in respective guide tubes having a pair of windshield guide portions disposed just behind the cowling in parallel spaced relation to each other. Disposed between the windshield guide portions of the guide tubes, the windshield has its opposite sides coupled to the drive ball assemblies via longitudinal slits formed in the windshield guide portions for joint movement with the drive ball assemblies back and forth along the windshield guide portions. A pair of drive wheels are coaxially and rotatably mounted to the motorcycle frame, and preferably coupled to a reversible electric motor, for driving engagement with the balls of the drive ball assemblies. Thus, upon bidirectional rotation of the drive wheels, the drive ball assemblies slide longitudinally back and forth through the guide tubes thereby moving the windshield up and down along the windshield guide portions of the guide tubes. |
