| 摘要 |
<p>A wiper driving mechanism includes a yoke member (5) driven by a rotary crank which in turn drives a pair of symmetrical arms (14, 15) each of which drives a wiper blade (17). Either the two arms (14, 15) are connected in parallel and drive one wiper blade (17) in a pantograph motion or separate unconnected blades carry out an arcuate sweep over a wider area. The arrangement enables a smooth motion approximating to simple harmonic motion to be achieved, and this then enables shock loads to be reduced at the ends of travel.</p> |
