Patent ID: 9679432
Date: 2017-06-13
CPC Classifications: B65H,G07D

Claim:
1. A paper sheet stacking mechanism comprising: a stacking unit configured to stack paper sheets in a stacked manner therein; a stacking wheel configured to transport paper sheets one by one to the stacking unit, the stacking wheel comprising a base fixed to a shaft and rotatable in a first rotational direction about the shaft and a plurality of vanes outwardly extending from the outer periphery of the base in a second rotational direction opposite to the first rotational direction of the base, the stacking wheel being configured to repeatedly transport a paper sheet received in a gap between two adjacent vanes among the plurality of vanes to the stacking unit; a roller disposed adjacent to the stacking wheel so as to be coaxial with the stacking wheel; and a transport unit configured to face the roller and transport a paper sheet to a gap between two adjacent vanes among the plurality of vanes of the stacking wheel, the transport unit being located such that a discharge position, from which a paper sheet gripped between the roller and the transport unit is discharged, is disposed outward from the outer periphery of the base of the stacking wheel and inward of a circular region defined by tips of the plurality of vanes of the stacking wheel during rotation of the stacking wheel, when viewed from the axial direction of the shaft, wherein a nip is formed between the transport unit and the roller, the nip transporting the paper sheet for receipt by a gap that is positioned between two adjacent vanes of the stacking wheel, and the roller is freely rotatable about the shaft and is configured to be rotated together with movement of the transport unit that is in contact with the roller, such that the roller is rotated about the shaft at a greater angular velocity than the angular velocity of the stacking wheel.