Electric knife sharpener

Abstract

An electric knife sharpener includes an accommodating unit including a base and an upper cover with an opening slot, a driving unit fixed on the base and including a motor and an eccentric wheel, a linkage unit including a linkage mechanism and an upper fixing seat with two limiting rods thereof pivotally connected to an upper part of the upper fixing seat in a parallel manner, and a grinding unit. The linkage unit has a guide groove located in a pivot end thereof and coupled to two guiding blocks in a through hole of the upper fixing seat. When the linkage mechanism is drivable by the eccentric wheel to move up and down alternatively. The grinding unit includes two sharpening components. One end of each sharpening component is pivotally connected in a groove of the linkage mechanism, so that the two sharpening components form a cross arrangement and opposite openings are formed between the two sharpening components to cross a sharpening accommodating space.

What is claimed is: 
     
         1 . An electric knife sharpener, comprising:
 an accommodating unit comprising an upper cover and a base, said upper cover comprising an opening slot;   a driving unit comprising a motor and an eccentric wheel, said driving unit being fixed on said base;   a linkage unit comprising a linkage mechanism, said linkage mechanism comprising a pivot end and a driving end, and said linkage mechanism being drivable by said eccentric wheel to reciprocate along an axial direction; and   a grinding unit comprising two sharpening components, each said sharpening component comprising an elongated oblique hole for the passing of one respective limiting rod of said upper cover, one end of each said sharpening member being pivotally connected to said pivot end of said link mechanism, and said two sharpening members being pivotally connected at different pivot points, so that said two sharpening components are arranged to be crossed and a sharpening accommodating space is formed between said two sharpening components.   
     
     
         2 . The electric knife sharpener as claimed in  claim 1 , wherein said driving end of said linkage mechanism is provided with a ring, and said eccentric wheel is located in said ring to drive said linkage mechanism to move up and down in a reciprocating motion. 
     
     
         3 . The electric knife sharpener as claimed in  claim 2 , wherein said two sharpening components are exposed in said opening slot of said upper cover.