CN202439477U

CN202439477U - Pencil sharpener

Info

Publication number: CN202439477U
Application number: CN2012200635379U
Authority: CN
Inventors: 李观伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-27
Filing date: 2012-02-27
Publication date: 2012-09-19
Anticipated expiration: 2022-02-27

Abstract

The utility model relates to a pencil sharpener, in particular to a pencil sharpener which can sharpen a pencil to have a square tip. The pencil sharpener comprises a knife rest, a blade and a guide hole which is arranged on the axis position of the knife rest, and the pencil sharpener is characterized in that the guide hole is in a conical shape, the blade is obliquely installed on the knife rest, a distance from a knife edge on the rear end of the blade to the axis of the guide hole is equal to the radius of a 2B pencil core, and the back surface of the blade is provided with a coarse file surface. The pencil sharpener has beneficial effects that the peeled tip can be in a square shape or a round shape, so that the problem that the pencil core is easy to break can be avoided; and the structure is simple, the practicability is strong, practicability and convenience also can be realized, and great convenience can be brought to students.

Description

A kind of pencil-knife

(1) technical field

The utility model relates to a kind of pencil-knife, the particularly a kind of pencil-knife that can cut out square nib.

(2) background technology

Just, the high school student often need be coated with answering card in the examination process, convenient if the nib of used Pencil with 2B hardness is whittled into square meeting.Yet the pencil-knife under the technology can only be cut out conical nib at present, and in working angles, is easy to the pen core that fractures, inconvenience extremely.Therefore, in order to address these problems, invented a kind of pencil-knife that can cut out square nib.

(3) summary of the invention

The utility model is in order to remedy the deficiency of prior art, provide a kind of simple in structure, practical and convenient, not only can make nib be whittled into conical but also can be whittled into square pencil-knife.

The utility model is realized through following technical scheme:

A kind of pencil-knife; Comprise knife rest, blade and be opened in the guide hole of shaft position in the knife rest, it is characterized in that: said guide hole is conical, and blade tilts to be installed on the knife rest; The distance of blade rear end blade and guide hole axis equals the radius of Pencil with 2B hardness pen core, and the blade back side is provided with coarse file face.

Said blade is fixed on the knife rest through some primary screws.

The beneficial effect of the utility model is: the nib of cutting out can be justified, the problem of having avoided pen core to fracture easily; Simple in structure, practical, practical and convenient, for students brings great convenience.

(4) description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing 1 is the structural representation of the utility model;

Among the figure, 1 knife rest, 2 blades, 3 guide holes, 4 coarse file faces, 5 primary screws.

(5) specific embodiment

Accompanying drawing is a kind of specific embodiment of the utility model.This embodiment comprises knife rest 1, blade 2 and is opened in the guide hole 3 of shaft position in the knife rest 1; It is conical that guide hole 3 is; Blade 2 tilts to be installed on the knife rest 1, and the distance of blade 2 back terminal knife edges and guide hole 3 axis equals the radius of Pencil with 2B hardness pen core, and blade 2 back sides are provided with coarse file face 4.Blade 2 is fixed on the knife rest 1 through some primary screws 5.

Adopt a kind of pencil-knife of the utility model, pencil is sent to by guide hole 3 front ends, and blade 2 is rectangle; One side is put the first edge on a knife or a pair of scissors, and tilting gearing is on knife rest 1, and blade 2 back terminal knife edges leave about the axis 1mm of guide hole 3 (approximating the radius of Pencil with 2B hardness pen core); Blade only cuts wooden stick in the cutting Pencil with 2B hardness like this, does not cut pen core; So just stay next columniform nib, also reduced the possibility that pen core fractures simultaneously.Cylindrical nib, take on the coarse file face 4 and grind, the side to justify, just can follow one's bent.Primary screw 5 is used for blade 2 is fixed to knife rest 1, has guaranteed the firm reliability of whole device.

Claims

1. pencil-knife; Comprise knife rest (1), blade (2) and be opened in the guide hole (3) of shaft position in the knife rest (1); It is characterized in that: said guide hole (3) is conical; Blade (2) tilts to be installed on the knife rest (1), and the distance of blade (2) back terminal knife edge and guide hole (3) axis equals the radius of Pencil with 2B hardness pen core, and blade (2) back side is provided with coarse file face (4).

2. a kind of pencil-knife according to claim 1 is characterized in that: said blade (2) is fixed on the knife rest (1) through some primary screws (5).