CN203358147U

CN203358147U - Pencil sharpener with offset cutting edge

Info

Publication number: CN203358147U
Application number: CN 201320475681
Authority: CN
Inventors: 吴伟平
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-28
Filing date: 2013-07-28
Publication date: 2013-12-25
Anticipated expiration: 2023-07-28

Abstract

The utility model provides a pencil sharpener with an offset cutting edge. The pencil sharpener comprises a base (1) and a blade (2). According to the pencil sharpener, the cutting edge of the blade and a guide hole axis of a conical guide hole are subjected to main view projection; and the cutting edge is offset inwards into the conical guide hole for an angle of alpha from the bottom opening to a conical top point of the conical guide hole, that is, an offset angle alpha is formed between the cutting edge and a conical generatrix of the conical guide hole inwards. When the pencil sharpener is used, due to the technical scheme that the cutting edge cuts into a conical generatrix part which is formed gradually on a pencil lead along the offset angle in an inclined manner, the stress on the pencil lead is alleviated and the pencil lead breakage is avoided, the problems and the defects that in the prior art, the cutting needs great effort and the pencil lead is easy to break are overcome, and the purposes that the cutting is easy to carry out and the pencil lead is not easy to break when the pencil is cut are achieved.

Description

A kind of pencil sharpener of cutting edge biasing

Technical field

The utility model relates to a kind of pencil sharpener, specifically refers to the pencil sharpener for a kind of cutting edge biasing of roll cutting pencil.

Background technology

Pencil sharpener consists of the blade of the pedestal that is provided with conical guide hole and cutting edge, the pencil sharpener of prior art, and the side-looking projection, the cutting edge of blade cuts mutually with the conical hole wall of guide hole; The master looks projection, the cutting edge of blade overlaps with the axis projection of conical guide hole along the conical hole wall of guide hole, so structure is when roll cutting pencil has closed on, along with the progressively increase of cutting edge with exposed pen core contact area, the stressed of pen core also increases thereupon, now pen core very easily fractures, and some pen cores even can fracture in wood pen holder inside, and the tip of pen core also is easy to collapse point; In like manner, along with the progressively moulding of penholder pen core that volume is cut, volume is cut power and is also further required great effort thereupon increasing, and therefore, prior art exists rolls up the problems and shortcomings of cutting effort, being easy to disconnected core.

Summary of the invention

The problems and shortcomings that exist for above-mentioned prior art, the utility model adopts the guide hole axis of the cutting edge of blade and conical guide hole, the master looks projection, by the end mouth of conical guide hole to the conical tip direction, to α ° of angle of biasing in conical guide hole, cutting edge inwardly with the α ° of offset angle of element of cone folder of conical guide hole; During the work of volume pen, utilize cutting edge along the oblique incision penholder of the offset angle pen core element of cone position of moulding progressively, alleviate the stressed technical scheme of avoiding disconnected core of penholder pen core, a kind of pencil sharpener of cutting edge biasing is provided, be intended to the oblique incision by cutting edge, the volume of pencil cut reach volume to cut brisk, the purpose of easily broken core not.

The purpose of this utility model is achieved in that a kind of pencil sharpener of cutting edge biasing, comprise pedestal, blade, wherein: described pedestal is plastics matter block member, the cone-shaped hole left small and right large that the center of pedestal left and right directions is provided with for rolling up the pen guiding is called conical guide hole, the platform that the front of pedestal is provided with for settling blade is called blade platform, and described blade platform is parallel and upper with the hole wall of described conical guide hole to be cut mutually;

The steel cutlery that described blade is the rectangle sheet, the downward sweptback single face edge of a knife that is provided with below of blade is called cutting edge;

Blade is fixedly connected on the described blade platform place of pedestal, main looks projection, and the described cutting edge of blade is the α ° of offset angle of guide hole axis folder of the described conical guide hole of downward-sloping and pedestal from right to left; Described α ° offset angle is 0.2～5 °; The side-looking projection, the described cutting edge of blade cuts mutually with the hole wall of the described conical guide hole of pedestal;

The direction face of structure representation is divided into up, down, left, right, front, rear side, wherein, front by the face of the face of statement main body, back is the face relative with described front.

Operation principle and beneficial effect

Due to the biasing of cutting edge, when work volume pen, the element of cone position that the oblique incision penholder of cutting edge pen core forms makes the penholder pen core be easier to cutting, stressed while having alleviated the cutting of penholder pen core, and having reduced may because of what cut stressed disconnected core.

Above-mentioned, the utility model adopts the guide hole axis of the cutting edge of blade and conical guide hole, lead and look projection, by the end mouth of conical guide hole to the conical tip direction, to α ° of angle of biasing in conical guide hole, cutting edge inwardly with the α ° of offset angle of element of cone folder of conical guide hole; During the work of volume pen, utilize cutting edge along the oblique incision penholder of the offset angle pen core element of cone position of moulding progressively, alleviate the stressed technical scheme of avoiding disconnected core of penholder pen core, the problems and shortcomings that prior art existence volume is cut effort, is easy to disconnected core have been overcome, the pencil sharpener of a kind of cutting edge biasing provided, by the oblique incision of cutting edge, the volume of pencil is cut reached volume to cut brisk, the purpose of easily broken core not.

The accompanying drawing explanation

Fig. 1 is that the master of structure of the pencil sharpener of a kind of cutting edge biasing of the present utility model looks perspective diagram;

Fig. 2 is the side-looking cross-sectional schematic of structure of the pencil sharpener of a kind of cutting edge biasing of the present utility model;

Fig. 3 is that the axle of structure of the pencil sharpener of a kind of cutting edge biasing of the present utility model measures intention.

Below in conjunction with the embodiment in accompanying drawing, the utility model is described in further detail, but should not be construed as any restriction of the present utility model.

In figure: pedestal 1, conical guide hole 11, guide hole axis 12, blade 2, cutting edge 21.

The specific embodiment

Consult Fig. 1～Fig. 3, the pencil sharpener of a kind of cutting edge biasing of the present utility model, comprise pedestal 1, blade 2, wherein: described pedestal 1 is plastics matter block member, the cone-shaped hole left small and right large that the center of pedestal 1 left and right directions is provided with for rolling up the pen guiding is called conical guide hole 11, the platform that the front of pedestal 1 is provided with for settling blade 2 is called blade platform, and described blade platform is parallel and upper with the hole wall of described conical guide hole 11 to be cut mutually;

The steel cutlery that described blade 2 is the rectangle sheet, the downward sweptback single face edge of a knife that is provided with below of blade 2 is called cutting edge 21;

Blade 2 is fixedly connected on the described blade platform place of pedestal 1, main looks projection, and the described cutting edge 21 of blade 2 is the α ° of offset angle of guide hole axis 12 folders of the described conical guide hole 11 of downward-sloping and pedestal 1 from right to left; Described α ° offset angle is 0.2～5 °; The side-looking projection, the described cutting edge 21 of blade 2 cuts mutually with the hole wall of the described conical guide hole 11 of pedestal 1;

Operation principle and beneficial effect

Due to the biasing of cutting edge 21, when work volume pen, the element of cone position that the oblique incision penholder of cutting edge 21 pen core forms makes the penholder pen core be easier to cutting, stressed while having alleviated the cutting of penholder pen core, and having reduced may because of what cut stressed disconnected core.

Claims

1. the pencil sharpener of cutting edge biasing, comprise pedestal (1), blade (2), it is characterized in that: described pedestal (1) is plastics matter block member, the cone-shaped hole left small and right large that the center of pedestal (1) left and right directions is provided with for rolling up the pen guiding is called conical guide hole (11), the platform that the front of pedestal (1) is provided with for settling blade (2) is called blade platform, and described blade platform cuts mutually with the hole wall of described conical guide hole (11) is parallel and upper;

The steel cutlery that described blade (2) is the rectangle sheet, the downward sweptback single face edge of a knife that is provided with below of blade (2) is called cutting edge (21);

Blade (2) is fixedly connected on the described blade platform place of pedestal (1), main look projection, the described cutting edge (21) of blade (2) is the α ° of offset angle of guide hole axis (12) folder of the described conical guide hole (11) of downward-sloping and pedestal (1) from right to left; Described α ° offset angle is 0.2～5 °; The side-looking projection, the described cutting edge (21) of blade (2) cuts mutually with the hole wall of the described conical guide hole (11) of pedestal (1).