Auxiliary drive device for a wheelchair
AssigneeAlber GmbH
InventorsGerd Dziobek, Joachim Menig
Life of this patent
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Abstract
An auxiliary drive device for a wheelchair has at least one freely pivotable electrically driven drive wheel and a coupling mechanism for coupling the auxiliary drive device to the wheelchair. The coupling mechanism includes a movable locking element which is movably supported in the coupling mechanism. The movable locking element can be in a locking position in which it causes locking in a positive-locking manner so that the auxiliary drive device is coupled to the wheelchair and, by operation of a handle, the locking element can be moved in a release position in which uncoupling of the auxiliary drive device from the wheelchair is possible.
Claims7
An auxiliary drive device for a wheelchair, comprising:
- at least one electrically driven drive wheel;
- an electronic control unit for controlling the functions of the auxiliary drive device and adapted to drive a motor driving the at least one electrically driven drive wheel such that a driving torque is delivered for rotating said at least one electrically driven drive wheel;
- a coupling mechanism for coupling the auxiliary drive device to a wheelchair;
- and
- at least one sensor adapted to detect cornering and a cornering speed,
- wherein said electronic control unit is adapted to reduce a cornering speed by reducing the driving torque of the at least one electrically driven drive wheel when a curve is negotiated,
- wherein the reduction depends on at least one of the radius of the curve and the cornering speed, and
- wherein the driving torque of the at least one electrically driven drive wheel is increased when the radius of the curve increases again and/or transition to driving straight ahead is detected.
Dependencies are inferred from the claim text.