CN2334605Y - Pencil sharpener - Google Patents

Abstract

The utility model relates to a pencil sharpener which belongs to a cultural appliance, comprising a sharpener body. The utility model is characterized in that one end of the sharpener body is provided with arc-shaped blades which are concave inwards, the blades are open blades with a single surface, the blades and the sharpener body form a slope angle, and the radius of an arc is 3.6 to 4 millimeters. The utility model has the advantages of simple structure, low cost, safe use and good effect.

Description

Pencil-knife

The utility model belongs to cultural tools, relates to a kind of pencil-knife of the usefulness that sharpens a pencil.

Pencil is the unique with pen of low year pupil, and each student needs tens pencils of cutting just enough to use every day.Therefore pencil-knife is important tool using.Sharpen a pencil at present with having automatic pencil-sharpening device, its complex structure, the cost height is unsuitable for ordinary consumption.It is relatively low that hand is twisted the pencil sharpener cost, but volume when cutting nib easily broken, use not very conveniently, effect is bad sometimes.The simplest is common flat sword lead pencil knife, and it can cut out the satisfied pen type of length thickness as required.But, easily hinder hand because its flat sword structure is dangerous for the pupil.Therefore this work can only be done by the head of a family.As seen, lead pencil knife exists the cost height at present, and the complex structure result of use is bad, uneasy congruent defective.

The purpose of this utility model provide a kind of simple in structure, cost is low, result of use good, be suitable for that the primary grades pupil uses and as safe as a house sharpening a pencil pencil-knife.

The technical scheme that realizes the utility model purpose is: pencil-knife, comprise cutter hub, and it is characterized in that: an end of cutter hub has the camber blade of indent.

The arc radius of the camber blade of the utility model pencil-knife is the 3.6-4 millimeter, and blade puts the first edge on a knife or a pair of scissors for one side, makes blade and cutter hub form certain slope angle.

The utility model is simple in structure, and cost is low, owing to adopt indent camber blade.Because blade has certain slope angle, and the pencil of cutting out is coniform and smooth surface, result of use is good again.

Below in conjunction with embodiment shown in the drawings the utility model is further described.

Fig. 1 is the structural representation of the utility model pencil-knife;

Fig. 2 is the A-A cutaway view of Fig. 1.

Pencil-knife of the present utility model can adopt metal material make by custom, with reference to accompanying drawing, comprise cutter hub (3), has the camber blade (1) of an indent at an end of cutter hub (3), and the arc radius of blade (1) can match with pencil diameter at the 3.6-4 millimeter.Blade (1) one side on cutter hub is put the first edge on a knife or a pair of scissors, and forms certain slope angle (2) with cutter hub.

During use, make one side that blade (1) has a slope angle touch a body by the angle of slope angle (2), a body just in time is positioned on the indent camber cutting edge, and the body that the pen of cutting out is cut than flat blade cutter is smooth, specious, and speed is fast.

Convenient in order to use, the handle portion of cutter hub (1) can be made the type shape that the various children of being suitable for like, as other handle is installed, better effects if.

Claims (3)

1, pencil-knife comprises cutter hub, it is characterized in that: cutter hub one end has the camber blade of indent.

2, pencil-knife according to claim 1 is characterized in that: the arc radius of camber blade is the 3.6-4 millimeter.

3, pencil-knife according to claim 1 is characterized in that: camber cutter single face puts the first edge on a knife or a pair of scissors, and blade and cutter hub are formed with slope angle.

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