Bill separator using frictional force

Abstract

The present invention provides a bill separator using frictional force, including a gate roller and a feeding roller which rotate in close contact with front and rear surfaces of a bill, respectively, to separate and discharge bills one by one, wherein the gate roller is formed of a material with a friction coefficient higher than that of the bill and constructed not to rotate in a bill-discharging direction, the feeding roller is formed of a material with a friction coefficient higher than that of the gate roller and constructed to rotate in the bill-discharging direction and to come into close contact with or be spaced apart from the gate roller, and an elastic means is further provided for causing the feeding roller to be in close contact with the gate roller with a certain magnitude of elastic force. With the bill separator using frictional force according to the invention, bills can be correctly discharged one by one so that the number of bills discharged can be coincident with the number of bills requested, and the bill separator can be easily installed and repaired without a skilled person and a special jig since possible abnormal changes in a gap between the gate roller and the feeding roller can be overcome simply by replacing the elastic means.

1 . A bill separator using frictional force, including a gate roller and a feeding roller, the gate and feeding rollers rotating in close contact with front and rear surfaces of a bill, respectively, to separate and discharge bills one by one, wherein the gate roller is formed of a material with a friction coefficient higher than that of the bill and constructed not to rotate in a bill-discharging direction; the feeding roller is formed of a material with a friction coefficient higher than that of the gate roller and constructed to rotate in the bill-discharging direction and to come into close contact with or be spaced apart from the gate roller; and an elastic means is further provided for causing the feeding roller to be in close contact with the gate roller with a certain magnitude of elastic force:  
   
   
       2 . The bill separator as claimed in  claim 1 , wherein the magnitude of the elastic force of the elastic means for causing the feeding roller to be in close contact with the gate roller is determined to be in a range in which when two or more bills B are introduced into a nip portion between the gate roller and the feeding roller, frictional force is generated between the gate roller and the bills B such that only a bill B, which is in direct contact with the feeding roller, is discharged by the rotation of the feeding roller and a bill, which is not in direct contact with the feeding roller, is brought into contact with the gate roller and thus prevented from being discharged.  
   
   
       3 . The bill separator as claimed in  claim 2 , wherein the elastic means comprises a coil spring of which one end is fixedly connected to a main body of the bill separator and the other end is connected to a rotational shaft of the feeding roller.  
   
   
       4 . The bill separator as claimed in  claim 1 , wherein the feeding roller is constructed to rotate in the bill-discharging direction and in a direction opposite thereto, and the gate roller is provided with a one-way clutch so that the gate roller can rotate only in the direction opposite to the bill-discharging direction.  
   
   
       5 . The bill separator as claimed in  claim 2 , wherein the feeding roller is constructed to rotate in the bill-discharging direction and in a direction opposite thereto, and the gate roller is provided with a one-way clutch so that the gate roller can rotate only in the direction opposite to the bill-discharging direction.  
   
   
       6 . The bill separator as claimed in  claim 3 , wherein the feeding roller is constructed to rotate in the bill-discharging direction and in a direction opposite thereto, and the gate roller is provided with a one-way clutch so that the gate roller can rotate only in the direction opposite to the bill-discharging direction.