| 摘要 |
PURPOSE:To aim at the extension of a wiping area, by rotating a main frame by a motor and revolving the planetary gear pivotally supported on this frame, whereby shifting a rack via a connecting member and different diametral gears and making a slide frame so as to slidden. CONSTITUTION:When an arm driving shaft 22 is rotated by a motor 23 and the main frame locked to a shaft 22 is moved, the planetary gear 43 pivotally supported on this frame 24 and to be engaged with the internal gear 44 fixed to the side of a car body 21 is revolved, thus both first and second links 38 and 42 are rotated. With this rotation, a bracket 35 is pressed to the right, and a pinion 31 of different diametral gears 30 is rotated against a second rack 28 and moved, while a wheel 32 is rotated at high speed by the pinion 31 whereby a first rack 27 is pushed out to the right at high speed. Therefore, a slide frame 26 being connected to the first rack 27 with a pin 29 is largely shifted to the right more than an ordinary position, so that a wider area comes to be wiped clean by a wiper blade in consequence. |
