| 摘要 |
<p>The invention relates to a self-driven undercarriage for negotiating level differences, mainly used for coupling to pushchairs and shopping trolleys, comprising means for self-driving by means of electrical energy, six driving wheels (1) arranged on the rear axle and actuated by gears and/or chains from a conventional motor, power means embodied as rechargeable batteries (3) and/or supercapacitors, tactile control means (2), passive security means embodied as automatic means based on an airbag system, manual means and/or electronic means, electrical connection means and fastening means.</p> |
