CN101973177A

CN101973177A - Pencil sharpener for flat pencil point

Info

Publication number: CN101973177A
Application number: CN 201010558889
Authority: CN
Inventors: 徐国元
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-02
Filing date: 2010-11-25
Publication date: 2011-02-16
Anticipated expiration: 2030-11-25
Also published as: CN101973177B; CN201872495U

Abstract

The invention discloses a pencil sharpener for a flat pencil point, which solves the problems of troublesome sharpening and the like in the prior art. The pencil sharpener comprises a cylindrical shell, a pencil sharpener, a flat pencil point knife edge and a return spring, wherein a guide rail or a guide slot is axially arranged on the inner wall of the shell; both sides of the knife seat are provided with a guide slot or a guide rail matched with the guide rail or the guide slot of the shell, and the penholder sharpener is arranged in the cylindrical shell and can slide along the guide rail or the guide slot; the flat pencil point knife edge is arranged on the bottom of the shell in the position corresponding to a pencil lead stretching hole; and the return spring is arranged between the inner bottom of the shell and the bottom of the penholder sharpener. The penholder part of a pencil can be firstly sharpened into conical by using the structure, the pencil lead part stretches out of the knife seat, the knife seat is moved backward to ensure that the pencil lead is inserted into the flat pencil point knife edge, the flat pencil point knife edge cuts the pencil lead, and the purpose of cutting the pencil point into flat (square or rectangular) is achieved.

Description

Flat nib pencil sharpener

Technical field

The present invention relates to a kind of pencil sharpener, particularly a kind of flat nib pencil sharpener.

Background technology

Pencil usually is made up of wooden penholder and the pen core that is provided with in the penholder, and is that its penholder cross section is generally circle or many ribs.

At present, generally its structure of the pencil sharpener of Shi Yonging is: as shown in Figure 4, a tool rest 7 that has the taper patchhole, be provided with bar shaped discharging opening 3 in taper patchhole one side, bar shaped discharging opening one side be fixed with blade 4, be sharpened in order to make pencil, the end of described taper patchhole is the circular port of slightly larger in diameter in the pen core diameter, but the formed awl point of the extended line of taper patchhole is positioned at tool rest, and the sharp tool rest that is provided with of correspondence awl is provided with blade, the sharp slightly length of length ratio awl of common blade; During use, pencil is inserted the taper patchhole, then in face of the blade Propelling pencil with sharpener in cap of blade, up to being whittled into conical getting final product to penholder and pen core; And at aspects such as design, drawing, drawing, card-coating, engineering constructions, the nib of this pencil will be whittled into flat (square or rectangle) in use usually, therefore existing pencil sharpener then can't be competent at, can only use craft such as pocket knife or blade to cut system, promptly inconvenient, waste pencil again, also occur unexpected easily.

Summary of the invention

For overcoming above-mentioned defective, the object of the present invention is to provide a kind of flat nib pencil sharpener easy to use simple in structure.

For achieving the above object, flat nib pencil sharpener of the present invention comprises:

One barrel-type casing is axially arranged with guide rail or guide groove in inner walls;

One pencil sharpener comprises: have the tool rest of taper patchhole, be provided with the crumb mouth in taper patchhole one side, be fixed with the blade tangent with the taper patchhole on the tool rest of crumb mouth one side; Be provided with the pencil-lead suitable in taper patchhole bottom and stretch out the hole with pencil pen core diameter; Be provided with and housing guide rail or suitable guide groove or the guide rail of guide groove in described tool rest both sides, the described penholder cutter of cutting is located in the barrel-type casing and can slides along guide rail or guide groove; Wherein, the length of the length of blade and tool rest and taper patchhole is suitable, and the formed awl point of the extended line of taper patchhole is positioned at outside the tool rest.

Stretch out corresponding position, hole at described housing bottom and pencil-lead and be provided with the flat nib edge of a knife; The described flat nib edge of a knife can be an ordinary blade, also can be for a U-shaped blade so that be whittled into the nib of fixed thickness.

At described housing inner bottom part with cut between the penholder cutter bottom and be provided with back-moving spring.

Wherein, in described barrel-type casing, also be provided with a circular pencil sharpener side by side.

Wherein, be provided with baffle plate at described barrel-type casing opening sheet, the corresponding taper patchhole of cutting the penholder cutter is provided with the through hole suitable with it on the described baffle plate.

Adopt said structure, can be earlier the penholder of pencil partly be whittled into taper shape, and make pen core partly stretch out tool rest, mobile backward then tool rest, pen core is inserted to the flat nib edge of a knife, the flat nib edge of a knife is cut pen core, thereby reach the purpose that nib is whittled into flat (square or rectangle).

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention.

Fig. 2 is the schematic diagram when cutting lead for retractable pencil embodiment illustrated in fig. 1.

Fig. 3 looks schematic diagram for a left side embodiment illustrated in fig. 1

Fig. 4 is the structural representation of existing pencil sharpener.

The specific embodiment

The present invention is further illustrated below in conjunction with drawings and Examples.

As shown in Figure 1 to Figure 3, flat nib pencil sharpener of the present invention comprises:

One barrel-type casing 1, housing can be square tube shape, also can be cylindrical shape; Be axially arranged with guide rail or guide groove 11 in inner walls;

One pencil sharpener comprises: have the tool rest 7 of taper patchhole, be provided with crumb mouth 3 in taper patchhole one side, be fixed with the blade 4 tangent with the taper patchhole on the tool rest of crumb mouth one side; Be provided with the pencil-lead suitable in taper patchhole bottom and stretch out hole 8 with pencil pen core diameter; Be provided with and housing guide rail or suitable guide groove or the guide rail 21 of guide groove in described tool rest both sides, the described penholder cutter of cutting is located in the barrel-type casing and can slides along guide rail or guide groove; Wherein, the length of the length of blade and tool rest and taper patchhole is suitable, and the formed awl point of the extended line of taper patchhole is positioned at outside the tool rest.

Stretch out corresponding position, hole at described housing bottom and pencil-lead and be provided with the flat nib edge of a knife 5; The described flat nib edge of a knife can be an ordinary blade, also can be for a U-shaped blade so that be whittled into the nib of fixed thickness.

At described housing inner bottom part with cut between the penholder cutter bottom and be provided with back-moving spring 6.

In summary, flat nib pencil sharpener of the present invention is to cut the penholder part and to cut nib two parts separately, promptly, penholder with pencil partly is whittled into taper shape earlier, and making pen core partly stretch out tool rest, mobile backward then tool rest is inserted to the flat nib edge of a knife pen core, the flat nib edge of a knife is cut pen core, thereby reach the purpose that nib is whittled into flat (square or rectangle).

In order to strengthen its practicality, in described barrel-type casing, also be provided with a common pencil sharpener 9 side by side.So promptly the flat nib can be cut, also conical pen point can be cut.

For the tool rest that prevents flat nib pencil sharpener drops out in the process of seesawing, be provided with the baffle plate (not shown) at described barrel-type casing opening sheet, the corresponding taper patchhole of cutting the penholder cutter is provided with the through hole suitable with it on the described baffle plate.

The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away from according to any simple modification, equivalent variations and the remodeling that technical spirit of the present invention is done above example, still belongs to the protection domain of technical solution of the present invention.

Claims

1. a flat nib pencil sharpener is characterized in that, comprising:

Stretch out corresponding position, hole at described housing bottom and pencil-lead and be provided with the flat nib edge of a knife;

2. flat nib pencil sharpener as claimed in claim 1 is characterized in that, also is provided with a pencil sharpener in described barrel-type casing side by side.

3. flat nib pencil sharpener as claimed in claim 1 is characterized in that, is provided with baffle plate at described barrel-type casing opening sheet, and the corresponding taper patchhole of cutting the penholder cutter is provided with the through hole suitable with it on the described baffle plate.