CN87214575U

CN87214575U - Multi-purpose pencil sharpener

Info

Publication number: CN87214575U
Application number: CN 87214575
Authority: CN
Inventors: 钟自立
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 1987-10-20
Filing date: 1987-10-20
Publication date: 1988-09-28

Abstract

The utility model discloses a multi-purpose pencil sharpener which is capable of conveniently cutting a lead cord into a flat pen point and a conical pen point. So the trouble generated in the process of pencil cutting of drawing personnel is alleviated. The utility model is suitable for undergraduate students and primary and middle school students.

Description

Multi-purpose pencil sharpener

The utility model belongs to culture and education articles for use field.

In Graphing of Engineering, even for line weight, require used pencil head to be whittled into flat.And existing pencil-knife can only be tapered with pencil coil, and the nib that encloses also need be processed, and uses such pencil sharper tip of a pencil thickness non-adjustable, uses such pencil drawing figure line to draw thicker and thicker, is used to write also can write bigger and bigger.

This pencil-knife designs for addressing the above problem.

The main feature that this pencil coil is cut is to cut out flat flat-shaped tip of a pencil, and length, the thickness of plumbous point are adjustable, what more order is can be according to the thickness of required lines, regulate the last bottom knife of pencil-knife voluntarily, make thickness one system of blade gap size point, so that the lines uniformity among the whole figure, it is generous that figure line is analysed clearly.In addition, this pencil-knife energy figure goes out the capable nib of awl of adjustable size.

Use this pencil sharpener, can remove the middle trouble that the drawing personnel sharpen a pencil with pocket knife fully from, the tip of a pencil of cutting out by this sharpener is as writing usually, and also the nib of cutting out than existing pencil-knife is handy, this sharpener is not only applicable to the Graphing of Engineering personnel, is applicable to the pass student application yet.

Figure in the utility model accompanying drawing (1) is a structural representation, and figure (2) is the cutter schematic diagram, and figure (3) is bottom knife master (a bowing) view, figure (4) bottom knife schematic diagram.Detailed structure is described as follows in each accompanying drawing: resilient (1), following (2) blade gone up, and they can be fixed on the framework (10) by fixing hole (5), and they have a power of back pressing from both sides all the time owing to flexible effect.Rely on double-screw bolt (3) to strut upper and lower blade.Double-screw bolt (3) is screwed in by screw (9) with cutter, and does not combine with bottom knife.There is cutting edge at cutter two places, side edge (6) is used for pencil with wound, this principle that rolls with existing pencil-knife is the same, institute's difference is that blade is movable, can roll out size, variform plumbous point by the position of reconciling blade (6), the blade in dead ahead (7) is the plumbous point that is used to cut flat, and it is to rely on the elastic force effect of folder back, adopts the principle of broaching to obtain the plumbous point of flat.The effect of the horizontal extension (8) of blade mainly is " penetration of a cutting tool " degree of depth of blade when controlling each the broaching, and guarantees not draw penetration of a cutting tool dark more more.The effect one of double-screw bolt (3) is to be used for blade is strutted, the 2nd, be used to reconcile the gap size between upper and lower blade, and also both be used to control the thickness of required nib.Hole (12) is positive six sides row, and the size row just in time can cooperate with drawing pencil.

The function practice process:

One, blade is strutted earlier cutter just in time is against on the boss (4), then pencil is put into hole (11) and roll away woodenly, lead for retractable pencil is exposed with double-screw bolt (3).

Two, if will obtain the plumbous point of flat, reconcile the thickness that upper and lower blade spacing makes it just in time to equal required plumbous point with double-screw bolt (3).Rolling away broaching in the wooden pencil insertion hole (12), can contact with bottom knife until the bottom of double-screw bolt (3) then, this is that plumbous sharp thickness is desired thickness.

Three,,,, will go wooden pencil still to put into hole (11) then and roll and get final product with the position of double-screw bolt (3) conciliation side edge (6) according to the thickness of required plumbous point if will cut the picture fine rule or write and use pencil.

For reconciling conveniently, the head portion and the peritreme thereof of double-screw bolt (3) have graduation mark.

Claims

1, a kind of cutter that sharpens a pencil, the upper and lower blade of rubber-like that is characterized as of the present utility model respectively has fixing hole and being fixed on the framework of sharpener by fixing hole, and there is cutting edge at cutter two places, and double-screw bolt screws in the cutter screw.

2, as claimed in claim 1

, it is characterized by has hexagonal hole on the framework.