Electric knife sharpener

An electric knife sharpener, comprising:

• an accommodating unit comprising an upper cover and a base, said upper cover comprising a V-shaped opening slot;
• a driving unit comprising a motor and an eccentric wheel connected to the motor, said driving unit being fixed on said base;
• a linkage unit comprising a linkage mechanism and an upper fixing seat, said upper fixing seat being set in said upper cover below said V-shaped opening slot, said upper fixing seat comprising two limiting rods, each said limiting rod being set in said upper fixing seat, said linkage mechanism comprising a pivot end inserted in said upper fixing seat, 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 arc-shaped oblique hole, said limiting rods of said upper fixing seat being respectively inserted through said arc-shaped oblique holes, each said sharpening component having one end thereof pivotally connected to said pivot end of said linkage mechanism, said two sharpening components being crossed at bottom portions thereof and pivotally connected to the linkage mechanism at different pivot points, respectively, so that said two sharpening components form a V-shaped opening defined by top portions of the two sharpening components,
• wherein each of said arc-shaped oblique holes curves outwardly away from the V-shaped opening from a bottom end of the respectively hole that is closer to the pivot point to a top end, and said top portions of the two sharpening components move apart from each other along said arc-shaped oblique holes when the linkage mechanism moves upwardly, and move toward each other along said arc-shaped oblique holes when the linkage mechanism moves downwardly.