CN2256379Y

CN2256379Y - Safety and sanitary pencil sharpener

Info

Publication number: CN2256379Y
Application number: CN 96215906
Authority: CN
Inventors: 刘波
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-19
Filing date: 1996-07-19
Publication date: 1997-06-18
Anticipated expiration: 2006-07-19

Abstract

The utility model relates to a pencil sharpener, comprising a knife blade, a supporting frame which fixes the knife blade, and a casing which is formed by the fastening of a lid and a box which accommodates pencil chippings. When an opening is covered, the bottom surface which covers the opening part is embedded in the supporting frame which is a rectangular lug boss; the lug boss is provided with a vertical obcuneate through-hole; the cutting edge of the knife blade is upward and is fixed on an inclined surface of the obcuneate through-hole in the lug boss through screws; the cutting edge is slightly higher than the upper surface of a bulge of the lug boss; the bulge of the lug boss is embedded in a hole of the lid; the two shoulder parts of the lug boss are connected with the bottom surface of the lid. The pencil sharpener, which can improve the sharpening speed and can make the pencil be sharpened easily, is particularly suitable children. The pencil sharpener, which can sharpen out pencil cores of various geometric forms such as a circle, a flat form, a square, etc., to satisfy various requirements. The pencil sharpener has the advantages of cleanness and safety while the pencil core is not easily broken.

Description

The safety and sanitation penknife

The utility model relates to a kind of penknife, belongs to B43L 23/00 class pencil sharper point device field.

The existing instrument of sharpening a pencil is divided into straight cutting type pencil-knife and rotary pencil sharpener two classes.By manual operation, common people are difficult for cutting the straight cutting type pencil-knife fully, to children's part difficult matter especially, and use dangerously, and the pen bits are scattered also extremely unhygienic in addition.Pencil sharpener has multiple, has a kind of pencil sharpener to be made of blade, lid, support, box body, and blade is fixed on the support, and support is connected with lid, covers and establishes pen plughole, pencil is inserted rotate and can sharpen a pencil, and the pen bits under cutting drop in the box body.Though it is many that pencil sharpener has made things convenient for than straight cutting type pencil-knife, because the wooden soft or hard difference of pencil, even two parts of a pencil are wooden all different, so cut core bad, easy to break, the pen of cutting out is not durable.In addition, pencil sharpener can only be whittled into circle with lead for retractable pencil, can not be whittled into the shape flat and side.

In view of above-mentioned, the utility model will provide a kind of penknife of safe and efficient health, and it can cut out multiple geometries such as flat core, square shaped core, circular core.

For reaching this purpose, the utility model by the following technical solutions: the safety and sanitation penknife comprises the support of blade, fixed blade, by lid and the shell of admitting the box body of a crumb to be interlocked and to form.Cover perforate, the bottom surface interlocking support at this lid perforate position; Support is a rectangular boss, this boss has the vertical through hole of falling the wedge shape, the up-bite jaw of blade also is screwed on the inclined-plane of the through hole of falling the wedge shape in boss, cutting edge is a little more than the upper surface of the lug boss of boss, in the hole of the lug boss insert cover of boss, two shoulders of boss are connected with the bottom surface of lid.

Below in conjunction with drawings and Examples the utility model is elaborated.

Fig. 1 is the structural representation of penknife; Fig. 2 is the vertical view of Fig. 1.

See also accompanying drawing.Penknife among the figure is made of blade 1, support 2, screw 3 and shell 4.Shell 4 is by lid and admit the box body of a crumb to be interlocked and forms, covers perforate, and support 2 is rabbeted in the bottom surface at this lid perforate position.Support 2 is a rectangular boss, this boss has the vertical through hole of falling the wedge shape, the up-bite jaw of blade 1 also is fixed on screw 3 on the inclined-plane of the through hole of falling the wedge shape in the boss, the cutting edge of blade 1 is a little more than the upper surface of the lug boss of boss, in the hole of the lug boss insert cover of boss, two shoulders of boss and the bottom surface of lid are bonding.

Blade 1 forms sharp cutting edge by high-speed steel after grinding and heat treatment, support 2 is shaped by a MPS shot, and shell 4 can be formed by the polyethylene injection.For causing child's interest, shell can be made into different toy shapes, as rifle shape, animal shape etc.

During use, hand-held pencil, pencil is moved backward covering gently of penknife, pencil just produces shearing force when sharp blade cutting edge contacts, because blade has stent support, so pencil can be whittled into the uniform wood chip of thickness, the pencil in the hand is also rotated in process action so repeatedly simultaneously, just can cut out a durable pencil, pen bits then fall in the box body of shell through the through hole of falling the wedge shape of boss, finish to open shell and pen is considered to be worth doing to outwell get final product.

This pencil-knife can improve cuts the pen speed degree, and making sharpens a pencil becomes easily, not only health but also safety, and core also not easy to break is suitable for children especially; This pencil-knife can be cut out the pen core of circle, flat, multiple geometry such as square, to satisfy multiple demand.

Claims

1. safety and sanitation penknife, it comprises the support of blade, fixed blade, by lid and the shell of admitting the box body of a crumb to be interlocked and to form, support is connected with covering, and it is characterized in that:

Describedly cover perforate, described support is rabbeted in the bottom surface at this lid perforate position;

Described support is a rectangular boss, this boss has the vertical through hole of falling the wedge shape, the up-bite jaw of described blade also is screwed on the inclined-plane of the through hole of falling the wedge shape in described boss, cutting edge is a little more than the upper surface of the lug boss of described boss, the lug boss of described boss embeds in the hole of described lid, and two shoulders of described boss are connected with the bottom surface of described lid.

2. safety and sanitation penknife as claimed in claim 1 is characterized in that: two shoulders of described boss and the bottom surface of described lid are bonding.

3. safety and sanitation penknife as claimed in claim 1 or 2 is characterized in that: described shell be shaped as toy shape.

4. safety and sanitation penknife as claimed in claim 3 is characterized in that: the shell of described toy shape is rifle shape or animal shape.