Abstract: An auxiliary drive assembly for wheelchairs is revealed. The auxiliary drive assembly includes a wired transmission member, at least one sensor, a control circuit and a drive unit. The wired transmission member is arranged at a wheel hub on a wheel. The sensor is set on the wheel for generating a sensing signal sent to the wired transmission member. The control circuit is coupled to the wired transmission member, receiving the sensing signal and generating a control signal. The drive unit is coupled to the control circuit and receiving the control signal so as to drive the wheel hub rotating and further move the wheel. Thereby the assembly is with simple structure and the environmental interference is minimized by wired signal transmission. The sensing signal is sent to the control circuit exactly and the drive unit is controlled to rotate the wheel precisely. The wired transmission reduces the cost.

Abstract: An auxiliary drive assembly for wheelchairs is revealed. The auxiliary drive assembly includes a wired transmission member, at least one sensor, a control circuit and a drive unit. The wired transmission member is arranged at a wheel hub on a wheel. The sensor is set on the wheel for generating a sensing signal sent to the wired transmission member. The control circuit is coupled to the wired transmission member, receiving the sensing signal and generating a control signal. The drive unit is coupled to the control circuit and receiving the control signal so as to drive the wheel hub rotating and further move the wheel. Thereby the assembly is with simple structure and the environmental interference is minimized by wired signal transmission. The sensing signal is sent to the control circuit exactly and the drive unit is controlled to rotate the wheel precisely. The wired transmission reduces the cost.

Abstract: An electronic apparatus is disclosed. The electronic apparatus comprises a display module, a detecting module, a keyboard module and a processing module. The detecting module is capable of detecting a position of the display module. The keyboard module comprises a key portion and a plurality of light guide structures. The key portion comprises at least one physical key. Each light guide structure comprises a light source and a light guide element having at least one icon corresponding to the at least one physical key formed on a surface of the light guide element. The processing module can select a different light guide structure according to the position of the display module to show the at least one icon on the key portion corresponding to the position of the display module.