Paper currency collection detection arrangement for an automatic vending machine

A paper currency collection detection arrangement used in an automatic vending machine and adapted for detecting the amount of collected paper currency and controlling power supply subject to the detection, comprising a paper currency receiving unit adapted for receiving paper currency, said paper currency receiving unit comprising a paper currency holding down mechanism adapted for holding received paper currency and push receiving paper currency backwards to a paper currency collection cabinet, a paper currency collection cabinet fastened to said paper currency receiving unit and adapted for collecting received paper currency, said paper currency collection cabinet comprising a back open side aimed at the paper currency holding down mechanism of said paper currency receiving unit, a front cover, a pressure board moved between said back open side and said front cover and adapted for supporting received paper currency against said paper currency holding down mechanism, and a plurality of spring members supported between said front cover and said pressure board, and a detection unit installed in said paper currency receiving unit below said paper currency collection cabinet and adapted for verifying the authenticity of received paper currency, wherein:

• said paper currency collection cabinet comprises a bottom panel, a bottom track on the inside at said bottom panel, a sensor hole through said bottom panel, a spring-supported slide inserted into said bottom track and moved with said pressure board to close/open said sensor hole;
• said detection unit comprises a sensor means controlled to emit signal to said sensor hole and adapted for cutting off power supply when said slide blocked said sensor hole.