| 摘要 |
The invention proposes a transmission mechanism of the type including a rotating shaft (14) connected in terms of rotation to a crank (18) which has a crank pin (28) designed to be connected to a connecting rod (30) belonging to a movement transmission linkage for the alternating rotational driving of a motor vehicle windscreen wiper, characterised in that the crank pin (28) is mounted so that it is eccentric, on a pivot (32) which is mounted to rotate in the crank (18), and in that it includes means (62, 48, 40, 36) for rotationally driving the pivot (32) of the eccentric crank pin (28) so as to cause the distance between the axis (Z-Z) of the crank pin (28) and the axis (X-X) of the rotating shaft (14) to vary. <IMAGE>
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