| 摘要 |
<p>A coin selection device for a vending machine comprises a coin receiving chute, first coin sensing means at an entrance 9 to the chute and second coin sensing means (37, 41) for detecting the presence of correct coinage within the chute. A control circuit of the coin selection device is arranged to respond to signals from the first and second coin sensing means and to operate a coin rejection means if signals are not received from both the first and second coin sensing means within a predetermined period of time. As described a coin entering the device at (9) causes linkage to operate a microswitch (60) to actuate the control circuitry. The coin then falls to a position between sensing means (37, 41) which are in the form of electrical contacts. If the coin (or possibly a plurality of coins) bridges the contacts an acceptance signal is generated thus causing a flap (18) to pivot in a first direction to allow the coins to pass to an acceptance region. If no acceptance signal is generated within a set time of actuating the control circuitry the flap (18) is pivoted in the opposite direction to reject the coin. The device may include a thickness gauge (14) and means to separate parts of the device to release jammed coins. <IMAGE></p> |
