Paper separation structure

Abstract

A paper separation structure includes: an actuating unit being selectable to generate a forward and reverse actuating torque (T); a one-way actuator connected to said actuating unit and being able to break the connection of said actuating unit while said actuating unit generates a reverse actuating torque (T); a breaking unit having a threshold of breaking torque (TL 1 ), and said braking torque (TL 1 ) set lower than said actuating torque (T); and a separating roller connected to said one-way actuator and said braking unit to receive said actuating torque (T) and said braking torque (TL 1 ). With the combination of components mentioned above, the paper separation structure of the present invention has a plurality of torque thresholds for paper separation and can switch between active and passive separation modes according to requirements.

What is claimed is: 
     
         1 . A paper separation structure includes:
 an actuating unit being selectable to generate an actuating torque (T) in forward and reverse direction;   a one-way actuator connected to said actuating unit and being able to break the connection of said actuating unit while said actuating unit generates the reverse actuating torque (T);   a breaking unit having an upper limit of breaking torque (TL 1 ), and said upper limit of braking torque (TL 1 ) set less than said actuating torque (T); and   a separating roller connected to said one-way actuator and said braking unit to receive said actuating torque (T) and said braking torque (TL 1 ).   
     
     
         2 . The paper separation structure as claimed in  claim 1 , wherein said breaking unit is a first torque limiter, of which one end is secured and the other end is connected to said separating roller. 
     
     
         3 . The paper separation structure as claimed in  claim 1 , wherein among said separating roller, said one-way actuator, and said breaking unit further arranged a transmission unit which comprising a first transmitting gear and a second transmitting gear meshed to each other, wherein said first transmitting gear connected to both said one-way actuator and said breaking unit for receiving said actuating torque and said braking torque, and said second transmitting gear connected to said separating roller for transmitting the mixed breaking torque mixed with said actuating torque and said braking torque to said separating roller. 
     
     
         4 . The paper separation structure as claimed in  claim 1 , wherein said actuating unit is an electronically controlled motor. 
     
     
         5 . The paper separation structure as claimed in  claim 3 , wherein said breaking unit is a first torque limiter, of which one end is secured and the other end is connected to said transmission unit. 
     
     
         6 . The paper separation structure as claimed in  claim 3 , wherein a second torque limiter is further disposed between said separating roller and said transmission unit, and said transmission unit transmitting actuating torque to said separating roller through said second torque limiter. 
     
     
         7 . The paper separation structure as claimed in  claim 5 , wherein the upper limit of the braking force that said actuating unit provided by the internal resistance is (Tm), and the upper limit of the transmission force provided by said second torque limiter is (TL 2 ), and wherein (Tm)+(TL 1 )>(TL 2 ), (TL 2 )>(TL 1 ).