Paper Feeding Device

Abstract

A paper feeding device comprises a cover, a roller frame and at least one paper blocking unit. The roller frame has two side walls. The paper blocking unit is placed beside the side wall, having a projection mounted on the side wall of the roller frame and a paper blocking element including a connecting portion, the connecting portion has a positioning pillar rotatablely connected to the cover. The connecting portion extends downwards to form a stopping portion, the stopping portion further extends downwards to form a paper blocking arm, the lower portion of the paper blocking arm defines an opening communicating one side of the paper blocking arm near the side wall. The projection can stops at the stopping portion and passes through the opening of the paper blocking element to allow the document to be fed in, so the cooperation is easy, the paper feeding device works smoothly.

1 . A paper feeding device, comprising:
 a cover, a pair of retaining portions mounted on an inner surface of the cover;   a pickup roller assembly picking up and then transferring papers into the paper feeding device;   at least one paper blocking unit placed beside the pickup roller assembly, having
 a paper blocking element including a connecting portion, the connecting portion having
 a positioning pillar rotatablely connected to the retaining portion of the cover, the connecting portion extending downwards to form a stopping portion, the stopping portion extending downwards to form a paper blocking arm, the paper blocking arm defining an opening communicating one side of the paper blocking arm near the pickup roller assembly; and 
 
 a projection mounted on the pickup roller assembly, 
 wherein the projection can stops at the stopping portion of the paper blocking arm and passes through the opening of the paper blocking arm. 
   
     
     
         2 . The paper feeding device as claimed in  claim 1 , wherein a retaining hole is opened in the retaining portion of the cover, the positioning pillar of the paper blocking element is connected to the retaining hole. 
     
     
         3 . The paper feeding device as claimed in  claim 1 , further comprising a picking roller and a conveying roller located between the two side walls of the roller frame. 
     
     
         4 . The paper feeding device as claimed in  claim 3 , wherein the conveying roller is mounted around an active shaft, the active shaft passes through the two side walls of the roller frame. 
     
     
         5 . The paper feeding device as claimed in  claim 4 , wherein a pair of connecting portions are mounted on the inner surface of the cover below the retaining portion, and a receiving space is formed between the two connecting portions for receiving the roller frame with the two ends of the active shaft connected to the connecting portions.