| 摘要 |
A speed reducer, in particular for converting continuous rotary motion of a drive motor to alternating rotary motion of an output shaft for operating a wiper linkage, and a hollow casing, which is closed by a cover with, in the hollow interior of the casing, a toothed wheel carrying a crank pin which is eccentric with respect to the axis of rotation of the toothed wheel, the crank pin being freely rotatable and free to move axially, with the crank pin driving a crank and connecting rod system which converts the continuous rotary motion of the toothed wheel into the alternating motion of the output shaft. The cover has at least one flat sliding thickened portion, of a material having a low coefficient of friction, arranged on its inner face and directed into the hollow interior of the casing.
|
