Paper feeding device

Abstract

A paper feeding device includes a rotational axis with a groove shaped cross section and having a web extending in the longitudinal direction and a flange provided at opposite sides thereof, and a pickup roller having a concave groove to receive the rotational axis. One end of the pickup roller is provided with a pair of engaging pieces that engages with a flange end portion of the rotational axis respectively, and the other end of the pickup roller is provided with a hook that is inserted into an insertion hole provided on the web of the rotational axis. In the paper feeding device, detachment is easy when the pickup roller is to be replaced and there is no increase in the number of parts and manufacturing processes.

1 . A paper feeding device including a rotational axis with a groove shaped cross section and having a web extending in a longitudinal direction and a flange provided at opposite sides thereof, and a pickup roller having a concave groove to receive said rotational axis, wherein 
 an end of said pickup roller is provided with a pair of engaging pieces that engages with a flange end portion of said rotational axis,    another end of said pickup roller is provided with a hook that is inserted into an insertion hole provided on said web of said rotational axis,    said hook extends outwardly from a body of said pickup roller and has a stepped shape having an abutting surface that abuts against an inner surface of said web,    a notch for positioning is provided at a site in said flange end portion where said engaging piece engages,    said engaging piece of said pickup roller is formed of resin and an end of said engaging piece is made to engage with said notch of said flange end portion by elasticity of resin.    
   
   
       2 . A paper feeding device including a rotational axis with a groove shaped cross section and having a web extending in a longitudinal direction and a flange provided at opposite sides thereof, and a pickup roller having a concave groove to receive said rotational axis, wherein 
 an end of said pickup roller is provided with a pair of engaging pieces that engages with a flange end portion of said rotational axis,    another end of said pickup roller is provided with a hook that is inserted into an insertion hole provided on said web of said rotational axis.    
   
   
       3 . The paper feeding device of  claim 2 , wherein said hook extends outwardly from a body of said pickup roller and has a stepped shape having an abutting surface that abuts against an inner surface of said web.  
   
   
       4 . The paper feeding device of  claim 2 , wherein a notch for positioning is provided at a site in said flange end portion where said engaging piece engages.