An auxiliary drive device and manually movable device for transporting a patient support surface with an auxiliary drive device

摘要

Auxiliary drive device (30) for a manually movable device (10) for transporting a patient support surface, comprising a drive unit (32) with a motor (34) and at least one wheel (36) rotatable by the motor (34), with which the device ( 10), a sensor (66, 68, 70) for detecting the direction of movement of the manually-operated device (10) and a controller configured to cause the motor (34) to rotate the wheel (36) in a rotational direction to rotate corresponding to the detected by the sensor (66, 68, 70) movement direction, wherein the sensor (66, 68, 70) is adapted to detect the direction of movement of the device (10) to detect the direction of rotation of the wheel (36) , characterized in that the sensor comprises a DC voltage generator (70) having a rotatable shaft (68) and a fixedly mounted on the shaft (68) rotating member (66) which abuts the wheel (36) and by turning the wheel (36 ) set itself in rotation t will.