CN202293956U

CN202293956U - Three-blade pencil sharpener

Info

Publication number: CN202293956U
Application number: CN2011203410692U
Authority: CN
Inventors: 张意立
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-02
Filing date: 2011-09-02
Publication date: 2012-07-04
Anticipated expiration: 2021-09-02

Abstract

The utility model discloses a three-blade pencil sharpener, wherein three oblique cone cutter frames 53 distributed equally extend vertically from a cutter frame side surface 58 of a handheld disk 55, the cutter blade mounting surface 65 of each oblique cone cutter frames 53 is parallel to a conic hole working surface 59 and cuts part of the conic hole working surface 59 to form a chip removing port 95, and forms a chip removing port with a vertical chip removing surface 83 on the back side of the front oblique cone cutter frame 53, a pencil sharpener blade 63 is fixed on the cutter blade mounting surface 65 of each oblique cone cutter frames 53 through at least one cutter blade bolt 73, so as to enable the three cutter blade edges 68 to apply a shear action to a pencil synchronously, the cutting output of each cutter blade to a pencil rod in a single coil work is only one third of the cutting output of the single blade in a conventional pencil sharpener to the pencil rod, the phenomenon of material taking caused on timber of the pencil rod can be avoided, and stress on a pencil core during a cutting process is guaranteed to be symmetric and uniform, and the possibility of fracture is low. The three-blade pencil sharpener is novel in original conception, is simple and convenient to manufacture and has a wide application range.

Description

A kind of three cutting edge of a knife or a sword pencil-knifes

Technical field

The utility model relates to a kind of pencil-knife of stationery, particularly relates to the multitool synchronous effect and makes pencil when being sharpened, be not easy a kind of three cutting edge of a knife or a sword pencil-knifes that fracture.

Background technology

There is investigation to show; Plain edition pencil-knife on the existing market all is that hilted broadsword cuts pencil; The position that pencil is cut into circular cone is one-sided stressed, and the pencil-lead carbon-point is a fragile material, and pencil shaft timber is easy to generate the material feeding phenomenon; Being everlasting when causing pencil-lead snaps when soon being learnt well, makes us annoyance endlessly.

Summary of the invention

The purpose of the utility model provides a kind of three cutting edge of a knife or a sword pencil-knifes, and the position that pencil is cut into circular cone receives three cuttves and acts on simultaneously, and stressed symmetry, balance avoid pencil shaft timber position to produce the material feeding phenomenon, guarantee that pencil-lead is not easy to fracture in working angles.

To achieve these goals; The utility model adopts following technical scheme: a kind of three cutting edge of a knife or a sword pencil-knifes; Vertically extend the oblique cone knife rest 53 that three five equilibriums are arranged on the knife rest side plane 58 of hand-held disk 55; The gradient of the blade installed surface 65 of described oblique cone knife rest 53 is parallel to conical bore working face 59 and cuts a spot of conical bore working face 59 formation chip removal mouths 95; Constitute chip removal mouth with the vertical row bevel 83 of previous oblique cone knife rest 53 dorsal parts, be fixed with pencil blade 63 with at least one blade screw 73 on the blade installed surface 65 of each oblique cone knife rest 53, blade cutting edge of a knife or a sword mouth 68 directed in orthogonal row bevel 83; But the width that does not contact and keep chip removal mouth 95 is preferably 2 millimeters between 1 millimeter to 3 millimeters.

As further improvement: the dorsal part of oblique cone knife rest 53 is vertical row bevels 83, is the center with conical bore working face 59 axial lines, and trisection is arranged and perpendicular to knife rest side plane 58.

As further improvement: the inboard of oblique cone knife rest 53 is conical bore working faces 59, and circular cone large port 97 diameters that constitute are intersected between 8 millimeters to 12 millimeters in conical bore working face 59 and plane, bottom side 50, are preferably 10 millimeters.

As further improvement: the outside of oblique cone knife rest 53 is knife rest faces of cylinder 96, with conical bore working face 59 be concentric axis, diameter is preferably 30 millimeters between 20 millimeters to 40 millimeters.

As further improvement: the top of oblique cone knife rest 53 is that knife rest outer face 56 is parallel to knife rest side plane 58, between 20 millimeters to 40 millimeters, is preferably 30 millimeters apart from knife rest side plane 58.

Exceed knife rest outer face 56 between 2 millimeters to 4 millimeters after install the blade outer end 66 of pencil blade 63, be preferably 3 millimeters, make pencil-lead can be cut into pointed cone.The frictional force of 55 in the centre of the palm and hand-held disk when annular knurl 57 strengthens operation on the outer rim of hand-held disk 55.

During use; One end of pencil stretches into from circular cone large port 97; Cling to the inboard of the blade cutting edge of a knife or a sword mouth 68 that three five equilibriums install, slowly pencil is done in face of 68 rotations of blade cutting edge of a knife or a sword mouth with respect to hand-held disk 55, the blade cutting edge of a knife or a sword mouth 68 of three symmetric arrangement is firmly symmetrical, equably pencil shaft and pencil-lead are cut; Eliminate bits and drain, accomplish the circular cone cutwork from the vertical row bevel 83 of chip removal mouth 95.

The beneficial effect of the utility model is a force balance; Be employed on the oblique cone knife rest 53 that three five equilibriums arrange three identical pencil blades 63 are installed; Make three blade cutting edge of a knife or a sword mouths 68 implement shear action to pencil synchronously; Each blade in individual pen work to the cutting output of pencil shaft have only the plain edition pencil-knife at hilted broadsword to 1/3rd of the cutting output of pencil shaft, avoid pencil shaft timber to produce the material feeding phenomenon, guarantee pencil-lead in being cut process stressed symmetry, evenly be not easy to fracture.Novel original creation, make simple and conveniently, the scope of application is extensive.

Description of drawings

Fig. 1 is the outward appearance front elevation of the utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the cutaway view of B-B among Fig. 4;

Fig. 4 is the cutaway view of A-A among Fig. 3.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further: a kind of three cutting edge of a knife or a sword pencil-knifes; Vertically extend the oblique cone knife rest 53 that three five equilibriums are arranged on the knife rest side plane 58 of hand-held disk 55; The gradient of the blade installed surface 65 of described oblique cone knife rest 53 is parallel to conical bore working face 59 and cuts a spot of conical bore working face 59 formation chip removal mouths 95; Constitute chip removal mouth with the vertical row bevel 83 of previous oblique cone knife rest 53 dorsal parts; Be fixed with pencil blade 63 with at least one blade screw 73 on the blade installed surface 65 of each oblique cone knife rest 53, blade cutting edge of a knife or a sword mouth 68 directed in orthogonal row bevel 83 is 2 millimeters but do not contact and keep the width of chip removal mouth 95.

Embodiment also adopts: the dorsal part of oblique cone knife rest 53 is vertical row bevels 83, is the center with conical bore working face 59 axial lines, and trisection is arranged and perpendicular to knife rest side plane 58; The inboard of oblique cone knife rest 53 is conical bore working faces 59, and it is 10 millimeters that conical bore working face 59 intersects circular cone large port 97 diameters that constitute with plane, bottom side 50; The outside of oblique cone knife rest 53 is knife rest faces of cylinder 96, with conical bore working face 59 be concentric axis, diameter is 30 millimeters; The top of oblique cone knife rest 53 is that knife rest outer face 56 is parallel to knife rest side plane 58, is 30 millimeters apart from knife rest side plane 58.

Exceeding knife rest outer face 56 after install the blade outer end 66 of pencil blade 63 is 3 millimeters, makes pencil-lead can be cut into pointed cone.The frictional force of 55 in the centre of the palm and hand-held disk when annular knurl 57 strengthens operation on the outer rim of hand-held disk 55.

Claims

1. cutting edge of a knife or a sword pencil-knife; It is characterized in that: vertically extend the oblique cone knife rest (53) that three five equilibriums are arranged on the knife rest side plane (58) of hand-held disk (55); The gradient of the blade installed surface (65) of described oblique cone knife rest (53) is parallel to conical bore working face (59) and cuts a spot of conical bore working face (59) formation chip removal mouth (95); Constitute chip removal mouth with the vertical row bevel (83) of previous oblique cone knife rest (53) dorsal part; The blade installed surface (65) of each oblique cone knife rest (53) is gone up and is fixed with pencil blade (63) with at least one blade screw (73); Blade cutting edge of a knife or a sword mouth (68) directed in orthogonal row bevel (83), but do not contact and the width that keeps chip removal mouth (95) between 1 millimeter to 3 millimeters.

2. a kind of three cutting edge of a knife or a sword pencil-knifes according to claim 1 is characterized in that: the dorsal part of oblique cone knife rest (53) is vertical row bevel (83), is the center with conical bore working face (59) axial line, and trisection is arranged and perpendicular to knife rest side plane (58).

3. a kind of three cutting edge of a knife or a sword pencil-knifes according to claim 1; It is characterized in that: the inboard of oblique cone knife rest (53) is conical bore working face (59), and circular cone large port (97) diameter of formation is intersected between 8 millimeters to 12 millimeters in conical bore working face (59) and plane, bottom side (50).

4. a kind of three cutting edge of a knife or a sword pencil-knifes according to claim 1 is characterized in that: the outside of oblique cone knife rest (53) is the knife rest face of cylinder (96), with conical bore working face (59) be concentric axis, diameter is between 20 millimeters to 40 millimeters.

5. a kind of three cutting edge of a knife or a sword pencil-knifes according to claim 1 is characterized in that: the top of oblique cone knife rest (53) is that knife rest outer face (56) is parallel to knife rest side plane (58), apart from knife rest side plane (58) between 20 millimeters to 40 millimeters.