CN110328991A - A kind of pencil sharpener of core-broken - Google Patents
A kind of pencil sharpener of core-broken Download PDFInfo
- Publication number
- CN110328991A CN110328991A CN201910743457.4A CN201910743457A CN110328991A CN 110328991 A CN110328991 A CN 110328991A CN 201910743457 A CN201910743457 A CN 201910743457A CN 110328991 A CN110328991 A CN 110328991A
- Authority
- CN
- China
- Prior art keywords
- plane
- blade
- pencil
- taper hole
- pen tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 23
- 238000005452 bending Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 210000001747 pupil Anatomy 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/08—Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a kind of pencil sharpeners of core-broken, including shell, blade and lock-screw, the present invention is using the first inclined-plane and the second inclined-plane that two different angles are arranged on the knife platform of shell inclined surface, when on the knife platform that blade is set in the housing, the pressing force of lock-screw makes blade bend between the angle on the first inclined-plane and the second inclined-plane, the generation of the buckling phenomenon, it changes and cuts taper on blade cutting edge, so that the cone angle at pen tip position becomes smaller, the effective writing transition elongated segment of pen tip from fine to coarse.Gap A is arranged in the present invention also on blade between the cutting edge in vertex of a cone face and the conical point of taper hole, the setting of gap A, pencil is prevented excessively to cut, the phenomenon that avoiding the pen tip point excessively and pen core frangibility of pencil, and pen tip can be withstood on the vertex of a cone face of shell, the axial further mobile of pencil is prevented, the process of sharpening pencil then can self termination.The present invention has structure simple, easy to make, effectively overcomes during pupil sharpens a pencil and is not easy the defect controlled.
Description
Technical field
The present invention relates to cultural goods technical field, especially a kind of pencil sharpener of core-broken.
Background technique
It is sharpened a pencil with pencil sharpener and has obtained universal application, be really commonly used among pupil, since pupil is to cutting lead
The control ability of power is poor during pen, and the pencil sharpener of the prior art has the following defects during sharpening a pencil, first, cutting
The process of cutting will not self termination, as long as being applied to the axial force of pencil and rotation torque does not stop, the process of sharpening pencil is not
Meeting self termination, and pen core frangibility；Second, the pen tip of pencil is excessively sharp, the penholder of the pen core of pencil and pencil after the completion of cutting
It is maintained on same taper, sharp pen tip pen tip when writing excessively easily snaps off, and the effective writing transition of pen tip from fine to coarse
Phase is short.A kind of cutting process energy self termination is designed, prevents pen core from fractureing, and makes the effective writing transitional period of pen tip from fine to coarse
Elongated pencil sharpener will seem very necessary.
Summary of the invention
The purpose of the present invention is a kind of pencil sharpener of core-broken of offer, the present invention use in view of the deficiencies of the prior art
The first inclined-plane and the second inclined-plane of two different angles are set on the knife platform of shell inclined surface, in the knife that blade is set in the housing
When on platform, the both ends of blade are respectively supported on the first inclined-plane and the second inclined-plane, and lock-screw passes through the through-hole and knife platform of blade
On screw hole engagement, the pressing force of lock-screw makes blade bend between the angle on the first inclined-plane and the second inclined-plane,
The generation of the buckling phenomenon, changes and cuts taper on blade cutting edge, so that the cone angle at pen tip position becomes smaller, pen tip is from fine to coarse
Effective writing transition elongated segment.Between the present invention is arranged between the cutting edge in vertex of a cone face and the conical point of taper hole also on blade
The phenomenon that gap A, the setting of gap A, prevents pencil excessively to cut, and avoids the pen tip point excessively and pen core frangibility of pencil,
And pen tip can be withstood on the vertex of a cone face of shell, the axial further mobile of pencil be prevented, even if being applied to the axial force of pencil
And rotation torque does not stop, pencil only can also skid in taper hole, and pencil can be cut again, and the process of sharpening pencil then can be certainly
Row terminates.The present invention have structure it is simple, it is easy to make, effectively overcome be not easy to control during pupil sharpens a pencil lack
It falls into.
Realizing the specific technical solution of the object of the invention is:
A kind of pencil sharpener of core-broken, feature include shell, blade and lock-screw, and edge is axially arranged with cone in the shell
Hole, vertical with the axis of taper hole and with taper hole conical point is tangent to be equipped with vertex of a cone face, and the bus perforation of taper hole side and taper hole is set
There is the knife platform of inclined surface, knife platform is equipped with confined planes and screw hole；
The knife platform of the inclined surface is made of the first inclined-plane of two different angles and the second inclined-plane, the first inclined-plane and the second inclined-plane
Successively rearwardly it is arranged by the top of taper hole；
The included angle B of 170o is equipped with greater than 150o and is less than between first inclined-plane and two, the second inclined-plane plane；
The blade is equipped with cutting edge and through-hole；
It is touched on the knife platform that the blade is set in the housing with confined planes, and the both ends of blade are respectively supported at the first inclined-plane and
On two inclined-planes, the through-hole that lock-screw passes through blade is engaged with the screw hole on knife platform, and blade is arranged in bending first
Between the included angle B on inclined-plane and the second inclined-plane, the curved surface of blade and the first inclined-plane and the second inclined-plane are tangent；
Gap A is equipped on the blade between the cutting edge in vertex of a cone face and the conical point of taper hole.
The purpose of the present invention is a kind of pencil sharpener of core-broken of offer, the present invention use in view of the deficiencies of the prior art
The first inclined-plane and the second inclined-plane of two different angles are set on the knife platform of shell inclined surface, in the knife that blade is set in the housing
When on platform, the both ends of blade are respectively supported on the first inclined-plane and the second inclined-plane, and lock-screw passes through the through-hole and knife platform of blade
On screw hole engagement, the pressing force of lock-screw makes blade bend between the angle on the first inclined-plane and the second inclined-plane,
The generation of the buckling phenomenon, changes and cuts taper on blade cutting edge, so that the cone angle at pen tip position becomes smaller, pen tip is from fine to coarse
Effective writing transition elongated segment.Between the present invention is arranged between the cutting edge in vertex of a cone face and the conical point of taper hole also on blade
The phenomenon that gap A, the setting of gap A, prevents pencil excessively to cut, and avoids the pen tip point excessively and pen core frangibility of pencil,
And pen tip can be withstood on the vertex of a cone face of shell, the axial further mobile of pencil be prevented, even if being applied to the axial force of pencil
And rotation torque does not stop, pencil only can also skid in taper hole, and pencil can be cut again, and the process of sharpening pencil then can be certainly
Row terminates.The present invention have structure it is simple, it is easy to make, effectively overcome be not easy to control during pupil sharpens a pencil lack
It falls into.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is C-C cross section structure schematic diagram of Fig. 1；
Fig. 3 is the structural schematic diagram of inventive shell；
Fig. 4 is D-D cross section structure schematic diagram of Fig. 3；
Fig. 5 is the F of Fig. 1 to partial structural diagram.
Specific embodiment
Refering to fig. 1, Fig. 2, Fig. 3, the present invention include a kind of pencil sharpener of core-broken, it includes shell 1, blade 2 and locking
Screw 3, along being axially arranged with taper hole 11 in the shell 1, it is vertical with the axis of taper hole 11 and with the conical point of taper hole 11 is tangent sets
There is vertex of a cone face 15, the bus perforation of 11 side of taper hole and taper hole 11 is equipped with the knife platform 12 of inclined surface, and knife platform 12 is equipped with confined planes
14 and screw hole 13.
Refering to fig. 1, the knife platform 12 of Fig. 3, Fig. 4, the inclined surface are oblique by the first inclined-plane 121 and second of two different angles
Face 122 is constituted, and the first inclined-plane 121 and the second inclined-plane 122 are successively rearwardly arranged by the top of taper hole 11；First inclined-plane
The included angle B of 170o is equipped with greater than 150o and is less than between 121 and 122 two, the second inclined-plane plane.
Refering to fig. 1, Fig. 2, the blade 2 are equipped with cutting edge 21 and through-hole 22.
Refering to fig. 1, Fig. 2, Fig. 3, Fig. 4, the blade 2 touches on the knife platform 12 in shell 1 with confined planes 14, and knife
The both ends of piece 2 are respectively supported on the first inclined-plane 121 and the second inclined-plane 122, and lock-screw 3 passes through the through-hole 22 and knife of blade 2
Screw hole 13 on platform 12 engages, and blade 2 in bending be arranged in the first inclined-plane 121 and the second inclined-plane 122 included angle B it
Between, the curved surface of blade 2 and the first inclined-plane 121 and the second inclined-plane 122 are tangent.
Refering to fig. 1, Fig. 5 is located on the blade 2 between being equipped between the cutting edge 21 in vertex of a cone face 15 and the conical point of taper hole 11
Gap A.
The present invention uses in this way:
Refering to fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, the present invention are provided with taper hole 11 in shell 1, are provided on shell 1 and taper hole
11 axis is vertical and the vertex of a cone face 15 tangent with the conical point of taper hole 11, penetrates through in the bus of 11 side of taper hole and taper hole 11
The knife platform 12 of inclined surface, and confined planes 14 and screw hole 13 are provided on knife platform 12；The setting in vertex of a cone face 15 is for stopping pen
Point prevents pencil from further moving axially；The setting of knife platform 12 and confined planes 14 passes through for limiting the position of blade 2
3 fixed blade 2 of lock-screw, to guarantee the cone of the cutting edge 21 and taper hole 11 in the first inclined-plane 121 and close vertex of a cone face 15 on blade 2
Gap A between vertex is precisely effective, the setting of gap A, and the pen tip for having prevented pencil excessively cuts, showing of cutting repeatedly
As during pencil cutting, due to the presence of gap A, remaining pen tip, and pen tip can be withstood on the vertex of a cone face 15 of shell 1, hindering
The axial further mobile of pencil is stopped, even if being applied to the axial force of pencil and rotation torque does not stop, pencil only also can be
It skids in taper hole 11, pencil can be cut again, and the process of sharpening pencil then can self termination.The pen tip for avoiding pencil is excessively sharp
And the phenomenon that pen core frangibility.
Refering to fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, the knife platform 12 of 1 inclined surface of inventive shell is by the first of two different angles
Inclined-plane 121 and the second inclined-plane 122 are constituted, and the first inclined-plane 121 and the second inclined-plane 122 are successively rearwardly set by the top of taper hole 11
It sets, i.e. the first inclined-plane 121 is close to the top of taper hole 11, and the second inclined-plane 122 is close to the tail portion of taper hole 11；When blade 2 is set to shell 1
When on interior knife platform 12, the two ends of blade 2 are respectively supported at first on the first inclined-plane 121 and the second inclined-plane 122, lock-screw
3 through-holes 22 for passing through blade 2 are engaged with the screw hole 13 on knife platform 12, keep blade 2 oblique first with the pressing force of lock-screw 3
It bends between the included angle B on face 121 and the second inclined-plane 122, the generation of the buckling phenomenon changes on 2 cutting edge 21 of blade
Taper is cut, and the cone angle of 121 cutter of the first inclined-plane, 2 cutting edge 21 is become smaller, to make the cone angle at pen tip position after cutting
Become smaller, since the cone angle of pen tip becomes smaller, so that the effective writing changeover portion of pen tip from fine to coarse is extended.
Claims (1)
1. a kind of pencil sharpener of core-broken, which is characterized in that it includes shell (1), blade (2) and lock-screw (3), the shell
Edge is axially arranged with taper hole (11) in body (1), vertical with the axis of taper hole (11) and tangent equipped with cone with the conical point of taper hole (11)
The bus perforation of top surface (15), taper hole (11) side and taper hole (11) is equipped with the knife platform (12) of inclined surface, and knife platform (12) is equipped with
Confined planes (14) and screw hole (13)；
The knife platform (12) of the inclined surface is made of the first inclined-plane (121) of two different angles and the second inclined-plane (122), and first
Inclined-plane (121) and the second inclined-plane (122) are successively rearwardly arranged by the top of taper hole (11)；
The angle of 170o is equipped with greater than 150o and is less than between first inclined-plane (121) and (122) two, the second inclined-plane plane
B；
The blade (2) is equipped with cutting edge (21) and through-hole (22)；
It is touched on the knife platform (12) that the blade (2) is set in shell (1) with confined planes (14), and the both ends difference of blade (2)
It is supported on the first inclined-plane (121) and the second inclined-plane (122), lock-screw (3) passes through the through-hole (22) and knife platform of blade (2)
(12) screw hole (13) engagement on, and blade (2) is arranged in bending in the first inclined-plane (121) and the second inclined-plane (122)
Between included angle B, the curved surface of blade (2) and the first inclined-plane (121) and the second inclined-plane (122) are tangent；
Gap A is equipped on the blade (2) between the cutting edge (21) of vertex of a cone face (15) and the conical point of taper hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910743457.4A CN110328991A (en) | 2019-08-13 | 2019-08-13 | A kind of pencil sharpener of core-broken |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910743457.4A CN110328991A (en) | 2019-08-13 | 2019-08-13 | A kind of pencil sharpener of core-broken |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110328991A true CN110328991A (en) | 2019-10-15 |
Family
ID=68149372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910743457.4A Pending CN110328991A (en) | 2019-08-13 | 2019-08-13 | A kind of pencil sharpener of core-broken |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110328991A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86201092U (en) * | 1986-02-21 | 1987-12-23 | 刘光汉 | Pencil sharpener with combined cutting edges |
| CN2094462U (en) * | 1991-02-16 | 1992-01-29 | 金莉 | Hand hold fixed position pencil sharpener |
| CN2166979Y (en) * | 1993-08-03 | 1994-06-01 | 陈武贵 | Pencil sharpener |
| CN2224742Y (en) * | 1994-10-06 | 1996-04-17 | 冯美华 | high performace pencil sharpener with low lead-breaking rate |
| CN203358147U (en) * | 2013-07-28 | 2013-12-25 | 吴伟平 | Pencil sharpener with offset cutting edge |
| CN210652458U (en) * | 2019-08-13 | 2020-06-02 | 上海友谊卷笔刀有限公司 | Pencil sharpener capable of preventing core breaking |
-
2019
- 2019-08-13 CN CN201910743457.4A patent/CN110328991A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86201092U (en) * | 1986-02-21 | 1987-12-23 | 刘光汉 | Pencil sharpener with combined cutting edges |
| CN2094462U (en) * | 1991-02-16 | 1992-01-29 | 金莉 | Hand hold fixed position pencil sharpener |
| CN2166979Y (en) * | 1993-08-03 | 1994-06-01 | 陈武贵 | Pencil sharpener |
| CN2224742Y (en) * | 1994-10-06 | 1996-04-17 | 冯美华 | high performace pencil sharpener with low lead-breaking rate |
| CN203358147U (en) * | 2013-07-28 | 2013-12-25 | 吴伟平 | Pencil sharpener with offset cutting edge |
| CN210652458U (en) * | 2019-08-13 | 2020-06-02 | 上海友谊卷笔刀有限公司 | Pencil sharpener capable of preventing core breaking |
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| PB01 | Publication | ||
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