| 摘要 |
A walk-substituting cart includes a front chassis, and a rear chassis; the front chassis has an upright tube, insulating plates on the rear, and an engaging plate, which is secured behind the upright tube, and has a hole; the rear chassis has an upright rod, insulating plates on the front, and a fixing mechanism positioned on top of the upright rod; the fixing mechanism has a spring-biased fixing rod, which will snap into the hole of the engaging plate when the front and the rear chassis are coupled; each insulating plate has a powerful magnet and contacting terminals secured thereon; when the front and the rear chassis are coupled, each of the magnets will attract the corresponding magnets, and each of the contacting terminals will closely touch the corresponding terminals so as to electrically connect the power supply unit to the actuating motor of the cart.
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