Knife sharpening device for circular knife

Abstract

A knife sharping device for a circular knife contains: a circular body, a circular connecting cover, and a first circular fixing cover. The circular body includes an annular portion and an external wheel, the annular portion has a through hole and a first conical face, the first conical face has a thickness gradually increasing to the outer rim of the annular portion from the central portion of the annular portion, the first conical face also has a plurality of first sharpening tabs equidistantly arranged thereon. The circular connecting cover includes a first side lid and an inserting post, a cross section of which is non-circular. The first circular fixing cover includes a second side lid, a first positioning member, and a first pressing loop; wherein a cross section of the first positioning member is non-circular, and the first positioning member has a first orifice defined thereon.

What is claimed is: 
     
         1 . A knife sharping device for a circular knife comprising:
 a circular body including an annular portion and an external wheel arranged around an outer rim of the annular portion, wherein the annular portion has a through hole defined at a central portion thereof and a first conical face formed on a first side thereof, and the first conical face has a thickness gradually increasing to the outer rim of the annular portion from the central portion of the annular portion, the first conical face also has a plurality of first sharpening tabs equidistantly arranged thereon;   a circular connecting cover including a first side lid and an inserting post extending outwardly from a central position of the first side lid, wherein a cross section of the inserting post is non-circular;   a first circular fixing cover including a second side lid, a first positioning member extending outwardly from a central position of an inner surface of the second side lid, and a first pressing loop extending outwardly from the inner surface of the second side lid and located outside the first positioning member, wherein a cross section of the first positioning member is non-circular, and the first positioning member has a first orifice defined thereon.   
     
     
         2 . The knife sharping device for the circular knife as claimed in  claim 1 , wherein the plurality of first sharpening tabs are made of ceramic material. 
     
     
         3 . The knife sharping device for the circular knife as claimed in  claim 1 , wherein the first side lid has a first griping bar formed on an outer side thereof; and the second side lid has a second griping bar arranged on an outer side thereof. 
     
     
         4 . The knife sharping device for the circular knife as claimed in  claim 1  further comprising a second circular fixing cover, and the second circular fixing cover including a third side lid, a second positioning member extending outwardly from a central position of an inner surface of the third side lid, and a second pressing loop extending outwardly from the inner surface of the third side lid and located outside the third positioning member, wherein a cross section of the second positioning member is non-circular, and the second positioning member has a second orifice defined thereon, a cross section of the second orifice is non-circular and corresponds to the profile of the inserting post. 
     
     
         5 . The knife sharping device for the circular knife as claimed in  claim 4 , wherein the annular portion of the circular body also has a second conical face defined on a second side thereof opposite to the first conical face, and the second conical face has a thickness gradually increasing to the outer rim of the annular portion from the central portion of the annular portion, the second conical face has a plurality of second sharpening tabs equidistantly arranged thereon. 
     
     
         6 . The knife sharping device for the circular knife as claimed in  claim 5 , wherein the plurality of second sharpening tabs are made of ceramic material. 
     
     
         7 . The knife sharping device for the circular knife as claimed in  claim 5 , wherein the plurality of first sharpening tabs are adjacent to the external wheel, and the plurality of second sharpening tabs are adjacent to the through hole. 
     
     
         8 . The knife sharping device for the circular knife as claimed in  claim 4 , wherein the third side lid has a third griping bar arranged on an outer side thereof.