Juice extractor

Abstract

A juice extractor, which can prevent juice from being easily discharged via a very small part of a space defined between a feed screw and a hard cylindrical control part of a control cap even when residue is being discharged therethrough, thereby realizing the maximum juice extraction ratio for each different kind of input material.

1 . A juice extractor, comprising:
 a housing having a juice discharge port formed in a lower part thereof and an interior space defined therein;   a strainer placed in the interior space of the housing and having both a crushing part and a discharging net;   a feed screw placed in the strainer and rotated in such a way that a rotating screw bar, which has spiral teeth on a periphery thereof, of the feed screw can be rotated horizontally and a housing cap assembled with a control cap, further comprising:   a soft elastic body installed between an end of the feed screw and a cylindrical control part of the control cap through which a residue is discharged,   wherein the control cap defines a inclined surface protrusion and the housing cap defines a taper protrusion engaged with the inclined surface protrusion,   wherein the inclined surface protrusion is inclined in a circumferential direction such that when the control cap is rotated, the control cap is moved in a left or a right direction by the cooperation of the inclined surface protrusion and the taper protrusion in order to control an elastic force of the soft elastic body.   
     
     
         2 . The juice extractor as set forth in  claim 1 , wherein a shape of the soft elastic body is a ring shape, and the end of the strainer is provided with a side ring for holding the soft elastic body. 
     
     
         3 . The juice extractor as set forth in  claim 1 , wherein the cylindrical control part of the control cap is integrated with the control cap into a single body. 
     
     
         4 . The juice extractor as set forth in  claim 1 , wherein the cylindrical control part is in direct contact with the soft elastic body and configured to compress the surface of the soft elastic body by a rotation of the control cap.