Wiper apparatus and car rear wiper

Abstract

A wiper blade 4 is movably arranged along a glass surface 3. Piezoelectric elements 6a and 6b comprise a piezoelectric ceramic and apply vibration to the wiper blade 4. Owing to this vibration, the wiper blade 4 moves by itself on the glass surface 3. The piezoelectric elements 6a and 6b are provided on the wiper blade 4, its tip, etc. Since the wiper blade 4 moves by itself, there is no need for an electromagnetic motor or a link mechanism to drive the wiper blade. It is possible to provide a small and light-weight wiper apparatus or improve the layout. Accordingly, the wiper apparatus can be mounted on a narrow and small place such as a glass hatch or a convertible's rear window.

Dependencies are inferred from the claim text.