Paper feeding mechanism

Abstract

A paper feeding mechanism includes a frame, a pickup assembly, at least one stopper element and one resisting element. The pickup assembly mounted in the frame includes a pickup bracket, a separation element and a pickup element. The stopper element is pivotably mounted between the pickup element and the separation element, and includes a blocking portion and a stopper portion. The resisting element is pivotably mounted between the stopper element and the separation element, and includes a resisting portion and a raising portion. The pickup element wiggles upward or downward under a drive of a gear to make the resisting element wiggle upward or downward with the resisting portion resisting against the stopper portion or being away from the stopper portion to make the blocking portion block papers entering the paper feeding mechanism, or loose the blocking portion freely to let the papers enter the paper feeding mechanism.

What is claimed is: 
     
         1 . A paper feeding mechanism, comprising:
 a frame;   a pickup assembly mounted in the frame, and including a pickup bracket, a separation element and a pickup element, the pickup bracket being connected between the separation element and the pickup element;   at least one stopper element pivotably mounted to the frame, and located between the pickup element and the separation element, the stopper element including a blocking portion, and a stopper portion protruded rearward from a rear surface of the blocking portion; and   at least one resisting element pivotably mounted to the frame, and located between the stopper element and the separation element, the resisting element including a resisting portion, and a raising portion connecting with a front end of the resisting portion,   wherein the pickup element wiggles upward or downward under a drive of a gear to make the resisting element wiggle upward or downward with the raising portion being located on the pickup roller or away from the pickup roller, and the resisting portion resisting against the stopper portion of the stopper element or being away from the stopper portion of the stopper element so as to make the blocking portion of the stopper element block papers entering an inside of the paper feeding mechanism, or loose the blocking portion of the stopper element freely to let the papers enter the inside of the paper feeding mechanism.   
     
     
         2 . The paper feeding mechanism as claimed in  claim 1 , wherein the resisting element further includes a pivoting roller, the pivoting roller is pivotably mounted to the frame through a joint of the resisting portion and the raising portion to make the resisting element pivotably mounted to the frame. 
     
     
         3 . The paper feeding mechanism as claimed in  claim 1 , wherein the stopper element further includes a pivoting portion, the pivoting portion is pivotably mounted to the frame through two opposite sides of the stopper portion to make the stopper element pivotably mounted to the frame.