KNIFE SHARPENING DEVICE FOR CIRCULAR KNIFE
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.
The present invention relates to a knife sharpening device, and more particularly to a knife sharpening device for a circular knife.
BACKGROUND OF THE INVENTIONA conventional circular knife is applied to cut an object linearly by matching with a ruler or a board-foot, and a circular blade of the conventional circular knife is dull after a period of using time, so it is sharpened by a belt grinding machine. But, the circular blade is rotated repeatedly during a sharpening process to cause uneven sharpening effect. A conventional knife sharpening device for a circular knife is disclosed in U.S. Pat. No. 8,267,752 and contains a body, an inserting block inserted into a first side of the body, and a supporting block mounted on a second side thereof and inserted into the inserting block, wherein the supporting block is arranged to position a circular blade, and a circular sharpening piece is formed on a peripheral side of the body to sharpen the circular blade easily.
Nevertheless, after the circular sharpening piece sharpens the circular piece for a long period of time, it damages easily.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTIONThe primary object of the present invention is to provide a knife sharpening device for a circular knife which avoids damaging a first conical face and prolongs service life of the first conical face.
Another object of the present invention is to provide a knife sharpening device for a circular knife which is capable of sharpening various circular blades.
To obtain the above objective, a knife sharpening device for a circular knife provided by the present invention 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 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.
The circular connecting cover includes 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.
The first circular fixing cover includes 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.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
With reference to
Referring to
As shown in
The first circular fixing cover 30 includes a second side lid 31, a first positioning member 32 extending outwardly from a central position of an inner surface of the second side lid 31, and a first pressing loop 33 extending outwardly from the inner surface of the second side lid 31 and located outside the first positioning member 32, wherein a cross section of the first positioning member 32 is non-circular, and the first positioning member 32 has a first orifice 34 defined thereon, a cross section of the first orifice 34 is non-circular and corresponds to a profile of the inserting post 22, the second side lid 31 has a second griping bar 311 arranged on an outer side thereof.
As illustrated in
Referring further to
Accordingly, the first circular blade 91 is sharpened completely by the plurality of first sharpening tabs 113 and does not contact the first conical face 112 to avoid damaging the first conical face 112 and to prolong service life of the first conical face 112.
With reference to
As illustrated in
Thereby, the knife sharping device is capable of sharpening various circular blades (such as the first circular blade and the second circular blade).
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
Claims
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.
Type: Application
Filed: Jun 30, 2014
Publication Date: Dec 31, 2015
Inventor: Pi-chao CHANG (Taichung City)
Application Number: 14/320,375