CN2094462U - Hand hold fixed position pencil sharpener - Google Patents
Hand hold fixed position pencil sharpener Download PDFInfo
- Publication number
- CN2094462U CN2094462U CN 91202684 CN91202684U CN2094462U CN 2094462 U CN2094462 U CN 2094462U CN 91202684 CN91202684 CN 91202684 CN 91202684 U CN91202684 U CN 91202684U CN 2094462 U CN2094462 U CN 2094462U
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- hole
- pencil
- locating hole
- plane
- diameter
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Abstract
The utility model discloses a hand hold fixed position pencil sharpener. The back of the conical hole of an ordinary pencil sharpener is provided with a short circular hole which can not ensure the stability of the rotation center of the pencil, so the pencil lead is often broken off. The utility model is characterized in that the back of the conical hole of the pencil sharpener is provided with a hand holding clamping positioning hole; the wall of the positioning hole is provided with two expansion seams. The pencil is clamped by the inner wall of the positioning hole when the positioning hole is clamped with a hand, thereby, the stability of the rotation center of the pencil can be ensured, and the pencil lead is prevented from being broken.
Description
The utility model relates to a kind of instrument of roll cutting pencil.
When sharpening a pencil, be easy to lead for retractable pencil is fractureed with common pencil sharpener.Though at the volume pen, there is the long circular hole of one five millimeter the back of cutter taper hole, can play some positioning actions, effect is very undesirable.Pencil is when rotating, and center of rotation is still stable inadequately, and this is the main cause that causes folding plumbous.
The purpose of this utility model is that a kind of improved pencil sharpener will be provided, and it can prevent effectively that folding is plumbous, and the pencil of cutting out is smooth, attractive in appearance, durable.
The purpose of this utility model is achieved in that the afterbody at pencil sharpener has a hand-held clamping and positioning device.When sharpening a pencil, use the hand clamping and positioning device, make the hole wall of positioner clamp pencil, and keep the stable of pencil center of rotation, prevent that folding is plumbous.In addition, this pencil sharpener can adopt the straight shape blade of common pencil sharpener.During installation,, make blade flexural deformation by the pressure of screw and the cooperation of blade base installed surface.The bus that the pencil of cutting out like this, the bus of its wooden conical section are also crooked, lead for retractable pencil is smooth, attractive in appearance, durable.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing.
Fig. 1 Fig. 2 is the schematic diagram of the hand-held clamping and positioning formula pencil sharpener that the utility model proposes.Hand-held clamping and positioning formula pencil sharpener shown in Figure 3, the front portion of its blade base installed surface, rear portion are the inclined-plane, and the middle part is a curved surface, and the bus front portion of taper hole, rear portion are straight line, and the middle part is a curve.Hand-held clamping and positioning formula pencil sharpener shown in Figure 4 adopts the substep autofrettage, and its blade base installed surface main body is the inclined-plane; There is a mat (9) front portion on inclined-plane; The bus of taper hole is a straight edge line; There is an installation locating hole (11) back of taper hole, and the front end of hand-held clamping and positioning device has one positioning boss (12) is installed.Hand-held clamping and positioning formula pencil sharpener shown in Figure 5 also adopts the substep autofrettage, and its blade base installed surface main body is the inclined-plane, and there is a boss (10) front portion on inclined-plane; The bus of taper hole is a straight edge line; The back of taper hole has a front end that the hand-held clamping and positioning device of positioning boss (12) is installed that an installation locating hole (11) pencil sharpener shown in Figure 6 is arranged, and the blade base installed surface is decurved concave surface, and the bus of taper hole is to the curved bus of axis.Pencil sharpener shown in Figure 7, blade base installed surface front portion is the inclined-plane, and middle part and rear portion are curved surface, and the bus part of taper hole is a straight line, and middle part and another part are the composite bus of curve.Fig. 8 is the shape at mat (9) or boss (10) top: A inclined-plane, B concave surface, C plane.
Below in conjunction with accompanying drawing 1, Fig. 2 illustrates details and the working condition according to the pencil sharpener that the utility model proposes.
This pencil sharpener comprises the main body (1) of a pencil sharpener, and a bellmouth (2) is arranged in the main body, and there is a plumbous bits groove (13) the taper hole front, and there is a blade base installed surface (4) the taper hole top.Blade (5) is installed on the blade base installed surface.It is edge line (14) that there are a screw hole (15), the cutting edge of blade in the blade middle part, and screw (6) passes the screw hole on the blade, and blade is fixed on the blade base installed surface.There is a hand-held clamping and positioning hole (3) back of taper hole, and taper hole (2) and locating hole (3) communicate, coaxial.The hole shape of locating hole has two classes: a class is a circular hole, and a class is the irregularly-shaped hole that inscribed circle diameter equals corresponding positioning round orifice diameter.The diameter of the diameter of circular hole or irregularly-shaped hole inscribed circle equals in the pencil that this pencil sharpener will cut, the diameter of the pencil of diameter maximum.If adopt the locating hole of 8 mm dias, can satisfy the volume of most pencils and cut needs.Have upper and lower two expansion joints (7), (8) from the afterbody of locating hole to the taper hole direction, along the axis symmetry, the center line floor projection at two expansion joints all coincides with the projection of locating hole axis horizontal.The length of locating hole is 10～60 millimeters, and the expansion joint is 3～50 millimeters apart from the distance of taper hole bottom.When sharpening a pencil, pencil is inserted in locating hole (3) and the taper hole (2), with a hand rotation pencil and push ahead, the another hand clamps the both sides of pencil sharpener afterbody.Locate the hole wall both sides and draw close mutually this moment, and the open end width at expansion joint narrows down, and locating hole rear end hole wall clamps pencil and keeps the pencil center of rotation stable.
For straight blade is become the spill blade, can select the structure of blade base installed surface as required:
The A main body is the inclined-plane, and screwing hole, inclined-plane is to a mat (9) is arranged between the inclined-plane front end; See Fig. 1
The B main body is the inclined-plane, and screwing hole, inclined-plane is to a boss (10) is arranged between the inclined-plane front end; See Fig. 5
The decurved concave surface of C; See Fig. 6
The D front portion is the inclined-plane, and middle part and rear portion are curved surface; See Fig. 7
E front portion, rear portion are the inclined-plane, and the middle part is a curved surface.See Fig. 3
3 kinds of shape: A, inclined-plane, B, concave surface, C plane are arranged at the top of mat (9) or boss (10).See Fig. 8
In order to guarantee that all pencils that can enter locating hole are all fully cut, blade base installed surface or installed surface main body must be cut taper hole (2) and locating hole (3), if taper hole and locating hole communicate but be non-intersect, must guarantee that then installed surface or installed surface main body can cut mutually with the extended line of locating hole.Intersection to blade front end by lead bits grooves (13) and taper hole (2) is pencil-lead segment of cutting A; By the intersection of lead bits groove and taper hole backward, the intersection point P to edge line (14) and locating hole (or extended line of locating hole) is wooden segment of cutting B; Not held by P point to blade is the C section.Blade length overall=A+B+C, C=0.01～5 millimeter.
After blade is installed on the blade base installed surface, tighten screw (6), under the acting in conjunction of screw and installed surface, blade is bent downwardly.The last every bit of edge line (14) is L to the distance of taper hole axis, in the wooden segment of cutting B, on the edge line every bit to the distance L of taper hole axis and this corresponding point on the taper hole bus to the distance L of taper hole axis ' between the pass be L=L '-T, T=0.01～0.6 millimeter, minimum L=0 in the lead for retractable pencil segment of cutting A～0.6 millimeter.
According to the structure difference of blade base installed surface, can select the taper hole of different surfaces shape, the bus of taper hole has 4 kinds: A, straight edge line.See Fig. 1,4,5, B, to the recessed bus of taper hole axis.See Fig. 6, C, a part are straight line, and middle part and another part are the composite bus of curve.See Fig. 3
For convenient for production, also can be divided into topping machanism and the manufacturing of hand-held clamping and positioning device two parts to pencil sharpener, and then be assembled into one.See Fig. 4,5.The afterbody of hand-held clamping and positioning formula pencil sharpener comprises that two expansion joints (7), (8) are called hand-held clamping and positioning device on locating hole (3) and hole wall and the hole wall, and the front portion of pencil sharpener is called topping machanism.The simplest implementing method is exactly the pencil sharpener of selling on the market, as the topping machanism of this pencil sharpener, be stained with a hand-held clamping and positioning device in its back, and below the blade front portion, add a mat, can constitute new-type pencil sharpener, effect is very desirable.
When adopting the substep autofrettage, topping machanism and hand-held clamping and positioning device have 2 kinds of assembling locate modes:
There is an installation locating hole (11) the taper hole back of A, topping machanism, and the diameter in hole is greater than the diameter in hand-held clamping and positioning hole (3); Hand-held clamping and positioning device front end has one positioning boss (12) is installed, and its external diameter equals to install the diameter of locating hole (11).See Fig. 4
The front end of B, hand-held clamping and positioning device has an installation locating hole (11), and the diameter in hole is greater than hand-held clamping and positioning hole (3); The not end of topping machanism has one positioning boss (12) is installed, and its external diameter equals to install the diameter of locating hole (11).See Fig. 5
During assembling, positioning boss (12) will be installed insert the positioning requirements that can guarantee pencil sharpener in the installation locating hole (11).If scribble glue, then become permanent connection between the two.
Claims (10)
1, hand-held clamping and positioning formula pencil sharpener, this device comprises a pencil sharpener main body (1), a taper hole (2) is arranged in the main body, there is a plumbous bits groove (13) in the place ahead of taper hole, there is a blade base installed surface (4) the taper hole top, blade (5) and screw (6) are arranged on the installed surface, there is a screw hole (15) at the blade middle part, the cutting edge of blade is edge line (14), there is a hand-held clamping and positioning hole (3) back that it is characterized in that taper hole (2), taper hole and locating hole communicate, and two dead in line, on the hole wall of locating hole vertically up and down symmetry have two expansion joints (7), (8), the center line floor projection at two expansion joints all coincides with the projection of locating hole axis horizontal, blade (5) becomes spill under the acting in conjunction of screw (6) and installed surface (4).
2, pencil sharpener according to claim 1, the length that it is characterized in that locating hole (3) is 10～60 millimeters, the hole shape of locating hole has two classes: a class is a circular hole, one class is the irregularly-shaped hole that inscribed circle equals corresponding positioning round orifice diameter, expansion joint (7), (8) are 3～50 millimeters apart from the distance of taper hole bottom, in case with the both sides of hand clamping pencil sharpener afterbody locating hole, the open end width of expansion joint (7), (8) just narrows down, the location hole wall clamps pencil and also keeps the pencil center of rotation stable.
3,, it is characterized in that the diameter of locating hole (3) or the diameter of irregularly-shaped hole inscribed circle, the diameter of the thickest pencil in the pencil that equals to cut with this pencil sharpener according to claim 1,2 described pencil sharpeners.
4, ask 1,2 described pencil sharpeners according to right power, the diameter that it is characterized in that locating hole (3) is 8 millimeters.
5, pencil sharpener according to claim 1 is characterized in that blade base installed surface (4) has 6 kinds of structures:
A, main body are the inclined-plane, and screwing hole, inclined-plane is to a mat (9) is arranged between the inclined-plane front end;
B, main body are the inclined-plane, and screwing hole, inclined-plane is to a boss (10) is arranged between the inclined-plane front end;
C, decurved concave surface;
D, front portion are the inclined-plane, and middle part and rear portion are curved surface;
E, rear portion are the inclined-plane, and middle part and front portion are curved surface;
H, forward and backward two ones are the inclined-plane, and the middle part is a curved surface;
The extended line of blade base installed surface (4) or installed surface main body cutting taper hole (2) and locating hole (3) or locating hole (3), after blade (5) is installed on the blade base installed surface, edge line (14) is gone up in the wooden segment of cutting B, every bit to the distance L of taper hole (2) axis and this corresponding point on the taper hole bus to the distance L of axis ' between the pass be L=L '-T, minimum L=0 in the lead for retractable pencil segment of cutting A～0.6 millimeter is gone up in T=0.01～0.6 millimeter, edge line (14).
6,, it is characterized in that the shape at mat (9) and its top of boss (10) has 3 kinds: A, inclined-plane according to claim 1,5 described pencil sharpeners; B, concave surface; The C plane.
7,, it is characterized in that the bus of taper hole (2) has 4 kinds: A, straight edge line according to claim 1,5 described pencil sharpeners; B, to the recessed bus of taper hole axis; C, a part are straight line, and middle part and another part are the composite bus of curve; D, forward and backward two parts are straight line, and the middle part is the composite bus of curve.
8,, it is characterized in that the wooden segment of cutting B+C of length=lead for retractable pencil segment of cutting A+ of blade, C=0.01～5 millimeter according to claim 1,5 described pencil sharpeners.
9, pencil sharpener according to claim 1 is characterized in that pencil sharpener is divided into topping machanism and hand-held clamping and positioning device two parts are made respectively, and then is assembled into one.
10, according to claim 1,9 described pencil sharpeners, it is characterized in that when adopting the substep autofrettage, two kinds of assembling locate modes being arranged:
There is an installation locating hole (11) the taper hole back of A, topping machanism, the diameter of locating hole (11) is greater than the diameter in hand-held clamping and positioning hole (3), hand-held clamping and positioning device front end has one positioning boss (12) is installed, and its external diameter equals to install the diameter of locating hole (11);
The front end of B, hand-held clamping and positioning device has an installation locating hole (11), the diameter of locating hole (11) is greater than the diameter in hand-held clamping and positioning hole (3), the not end of topping machanism has one positioning boss (12) is installed, and its external diameter equals to install the diameter of locating hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91202684 CN2094462U (en) | 1991-02-16 | 1991-02-16 | Hand hold fixed position pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91202684 CN2094462U (en) | 1991-02-16 | 1991-02-16 | Hand hold fixed position pencil sharpener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2094462U true CN2094462U (en) | 1992-01-29 |
Family
ID=4913183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91202684 Withdrawn CN2094462U (en) | 1991-02-16 | 1991-02-16 | Hand hold fixed position pencil sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2094462U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328991A (en) * | 2019-08-13 | 2019-10-15 | 上海友谊卷笔刀有限公司 | A kind of pencil sharpener of core-broken |
| CN111645447A (en) * | 2020-06-05 | 2020-09-11 | 得力集团有限公司 | Pencil sharpener capable of automatically arranging broken pencil leads |
-
1991
- 1991-02-16 CN CN 91202684 patent/CN2094462U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328991A (en) * | 2019-08-13 | 2019-10-15 | 上海友谊卷笔刀有限公司 | A kind of pencil sharpener of core-broken |
| CN111645447A (en) * | 2020-06-05 | 2020-09-11 | 得力集团有限公司 | Pencil sharpener capable of automatically arranging broken pencil leads |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |