Device for preventing backlash between a driving toothed wheel and a driven toothed wheel

摘要

The invention relates to a device for preventing backlash between the meshing teeth (86, 72) of a driving toothed wheel (84) which can be rotated about a first axis in a first direction (26) and a driven toothed wheel (70, 76) which is rotated by the said driving toothed wheel (84) about a second axis in a second direction (28) counter to the first direction (26). The said device comprises the following features: an apparatus for transmitting a first torque to the driving toothed wheel (84) which forces the driving toothed wheel (84) to rotate in a first direction (26); an apparatus for transmitting a second torque to the driven toothed wheel (70, 76) which forces the driven toothed wheel (70, 76) to rotate in a direction counter to the second direction (28), the size of the said second torque and the size of the said first torque being equal.