Abstract: A coin diameter discriminating device includes a plurality of optical sensors, a measuring section, and a calculating section, and a discriminating section. The plurality of optical sensors are arranged along the coin path so as to be separated from each other in a direction to cross a coin rolling direction and to oppose different positions of a coin which rolls downs. The measuring section measures a detection time of the coin on the basis of outputs from the optical sensors. The calculating section calculates a ratio of the detection times of two specific optical sensors which are supplied from the measuring section. The discriminating section discriminates a diameter of the inserted coin on the basis of a calculation result from the calculating section.

Abstract: A bucket type coin accumulation apparatus includes a collection plate, a return plate, locking members, weights, and photodetectors. The collection and return plates constitute a bottom portion of a coin accumulation bucket and cooperate to randomly accumulate coins in the coin accumulation bucket. The locking members independently lock the collection and return plates when a coin is inserted. The weights independently urge the collection plate and the return plate in a counter-gravity direction by a biasing force smaller than the weight of one coin. The photodetectors detect whether the collection and return plates are located at home positions where the collection and return plates are biased by the weights. One of the collection and return plates is released by the weight of the accumulated coin upon selective unlocking of the locking members, and the presence/absence of coin accumulation is discriminated by an output from the photodetectors.