CN202319638U

CN202319638U - Electric pencil sharpener

Info

Publication number: CN202319638U
Application number: CN201120471290XU
Authority: CN
Inventors: 吴州洋; 俞金江; 姜瑜; 周玮斌; 黄添彪
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2011-11-15
Filing date: 2011-11-15
Publication date: 2012-07-11
Anticipated expiration: 2021-11-15

Abstract

The utility model relates to an electric pencil sharpener. The electric pencil sharpener mainly comprises a shell, a pencil sharpener and a motor. The motor realizes rotation through a rotation control circuit, wherein the rotation control circuit is the most basic circuit; the switch end of the rotation control circuit is connected with the positive electrode of a battery, and the other end of the rotation control circuit is connected with the positive electrode of the motor; and the negative electrode of the motor is connected with the negative electrode of the battery. A rotating shaft of the motor and a cutter are fastened in the shell through a fastening mechanism. The electric pencil sharpener also comprises a positioning mechanism consisting of a pencil scrap box, a spring, a guide post, a pull button and a baffle plate, and a clamping mechanism consisting of a wrench, an iron wire and a cam. The positioning mechanism and the clamping mechanism act together, so as to ensure that a pencil is firmly fixed and can be conveniently cut. The cutter of the electric pencil sharpener is of a standard pencil point shape, so that cutting can be easily performed, paper cannot be lacerated because a pencil head is too sharp, and the waste caused by cutting off most of a lead core is avoided; and because the pencil is cut by the power generated by an electric motor, so that the electric pencil sharpener can be conveniently and quickly used, is simple and environmentally-friendly, and is especially suitable for students.

Description

Electric pencil sharpener

Affiliated technical field

The utility model relates to office stationary, especially a kind of electric pencil sharpener of convenient and swift, simple environmental protection.

Background technology

In recent years, increasing automatic pencil sharpener has occupied the commercial market.Their novel outward appearances, unique combination property receive attracting attention of various places people.No matter pencil sharpener in the market is blade type or milling cutter type, power type or type hand, and no matter how many their outward appearances has attractive in appearance, and still how many functions has many, all can't avoid three big shortcomings of current pencil sharpener existence:

One, the nib of cutting out is point too, is prone to scratch paper when writing, and nib fractures easily, because nib thickness difference is too big, when writing, causes writing inhomogeneous.

Two, blade or milling cutter are too big to the cutting output of pencil-lead, and lead for retractable pencil most of actual that reamed rather than write wasted very big.

When three, blade or milling cutter cut pencil,, when cutting, cut pen core disconnected easily because cutter follows the axiality of pencil to guarantee.

Assurance cuts and is beneficial to the nib of writing is the most essential developing direction of pencil sharpener, and three problems that more than exist will badly influence fluency and comfortableness that the student writes.In order to overcome above several shortcoming, the utility model provides a kind of and can overcome the above problems, and is convenient and swift again, the electric pencil sharpener of environmentally-friendly sanitary.

Summary of the invention

The purpose of the utility model provides a kind of electric pencil sharpener; It can rely on the written shape of pencil sharpener ideal standard to avoid three place's weak points of mentioning in the background technology; Can utilize the rotation of motor to come cutting pencil automatically again through switch, time saving and energy saving, be beneficial to and write.

The technical scheme of the utility model electric pencil sharpener is: a kind of electric pencil sharpener, form by housing, rotation control circuit, detent mechanism, clamp mechanism, pencil sharpener and pen bits box.

Described hull shape is simple, the fillet smooth transition, and housing divides three parts to form, and pencil sharpener, detent mechanism and clamp mechanism are distributing in the main casing.In two other housing, distributing respectively motor and battery, the two shell-side faces diameter that distributing respectively is 1 millimeter a aperture; Be motor and battery heat transmission; Motor be distributed in battery above, the housing pore size of depositing battery is the same with the shape of battery, so battery can be fastening in housing; Housing bottom has a bottom, supplies fetching battery.

Described rotation control circuit comprises battery, switch, motor, lead.The positive pole of described battery links to each other with switch one end, and the switch other end links to each other with motor is anodal, and the motor negative pole links to each other with GND; Battery can be that dry cell can be a rechargeable battery also, and energy consumption is less; The machine shaft end links to each other with pencil sharpener, being connected of motor and housing is to rotate to the certain position fastening on housing by sleeve; Switch is arranged on the top of battery container, in fixing and the rectangular installing hole.

Described detent mechanism comprises spring, guide pillar, draw buckle, baffle plate, guide pillar one end is buckled on the baffle plate, the other end is fixing, and the guide rail that is complementary with guide pillar is arranged in the housing; Guide pillar then slides in this guide rail, and drawing button also is that an end is buckled on the baffle plate, and the other end is unfixing, drops in the housing; Drawing the tongue of buckling three diverse locations, is to be used for adjusting baffle plate to the position of housing, that is to say that baffle plate has three position locations, and spring housing is in guide pillar; But therefore the movement of springs scope when baffle plate outward during pull and stretch, draws the tongue of button to fall on the housing only in housing, locatees; Simultaneously spring also is compressed, when drawing button up to carry a bit, and when making tongue break away from housing, but according to law recklessly; The elastic force of spring is directly proportional with the decrement of spring, so under the effect of spring force, baffle plate can be pulled back to original position automatically.

Described clamp mechanism comprises spanner, iron wire, cam.Spanner is enclosed within on the housing, the sandwich iron wire, and iron wire becomes circular arc type; And have certain elasticity, not yielding, three cams are enclosed within on the spanner; The cam periphery encases with rubber; When clamping pencil, have more frictional property like this, a rectangular groove is arranged at the cam bottom, just is enclosed within on the circular salient point of spanner.When down pressing spanner, three cams rotate outward, and pencil just can stretch into, and when unclamping spanner, because the effect of iron wire, three cams can rotate toward former direction again, have clamped pencil.Housing three limits have a rectangular raised line respectively, are that the fastening baffle plate is used.

Described pencil sharpener is the maximum bright spot of the utility model, its shape be beneficial to the first appearance of the standard pen of writing, cutting tip is coning; But its top is the circle of 0.6 millimeter of a diameter, and it is circular suitable with pencil diameter that part is cut in big end-grain cutting, and such shape of tool has guaranteed that the pen that cutting is come out can be too sharp; Can not interrupt easily, the shape of nib is the same with the shape of tool because cutting is come out, and we also can guarantee its nib even thickness and cutting output; Cutting tip is provided with 36 holes, symmetric arrangement, and each plane is provided with 4 holes; Its diameter is identical, and diameter increases progressively to big end from small end successively.The effect in hole is for chip removal, and when the driven by motor pencil sharpener rotated, along with action of inertia, a bits can throw away along with rotation direction, and falls in the pen bits box.Because motor directly connects with cutter; Therefore axis has good axiality on same straight line, add the cooperation of detent mechanism and clamp mechanism; Machine shaft, pencil sharpener and pencil are on same straight line when just having guaranteed cutting, and pen core is cut disconnected phenomenon when so just having avoided cutting.

Fix through a small convex groove between described pen bits box and housing bottom, a semicircular guide rail groove is arranged at pen bits box bottom, guide effect is arranged, but level is released.

The beneficial effect of the utility model is: when cutting, not only practiced thrift the time, and guaranteed to cut and be beneficial to the pencil of writing, avoided too point of nib, thickness is uneven, and pen core is cut phenomenons such as disconnected, and is convenient and swift, simple environmental protection.

Description of drawings

Fig. 1 is the front view of the utility model electric pencil sharpener.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 1.

Fig. 4 is the C-C cutaway view of Fig. 3.

Fig. 5 is the cutaway view of the utility model electric pencil sharpener cutter.

Fig. 6 is the partial enlarged drawing of Fig. 5.

1. spanners, 2. baffle plates, 3. springs, 4. housings, 5. motors, 6. sleeves, 7. pencil sharpeners, 8. switches, 9. guide pillars 10. draw and buckle 17. bits of 11. leads, 12. batteries, 13. bottoms, 14. cams, 15. rubber, 16. iron wires box among the figure

The specific embodiment

Now combine accompanying drawing that the structure of the electric pencil sharpener of the utility model is described in detail:

In conjunction with Fig. 1,2,3,4; A kind of electric pencil sharpener, the rotation control circuit that comprises housing (4), forms by battery (12), switch (8), motor (5) and lead (11), by spring (3), guide pillar (9), the clamp mechanism, pencil sharpener (7) and the pen bits box (17) that draw the detent mechanism buckleing (10) and baffle plate (2) and form, form by spanner (1), iron wire (16) and cam (14).

Fig. 2 middle shell (4) left side is divided into cloth, and 300 diameters be 1 millimeter aperture; Be motor (5) and battery (12) heat transmission, motor (5) is distributed in upper shell (4), and battery (12) is distributed in lower house (4); A bottom (13) is arranged at lower house (4) bottom, supplies fetching battery to use.Motor (5) tightens together through sleeve (6) and housing (4), and one section of the rotating shaft of motor (5) and pencil sharpener (7) is connected.The positive pole of battery (12) is connected with switch (8) one ends, and switch (8) other end and motor (5) are anodal to be connected, and motor (5) negative pole is connected with battery (12) negative pole, and switch (8) is arranged on the top of lower house (4), fix and rectangular installing hole in.The pen bits that cutting produces drop in pen bits boxes (17); Fix through a small convex groove between pen bits box (17) and housing bottom; A semicircular guide rail groove is arranged at pen bits boxes (17) bottom, play the guiding role, and pen bits boxes (17) can be released the pen bits of outwelling the inside along the guide rail level.

Guide pillar (9) one ends are buckled on the baffle plate (2) among Fig. 3, and the guide rail that is complementary with guide pillar (9) is arranged in the housing (4), and the other end slides in guide rail, and drawing button (10) also is that an end fastening is on baffle plate (2); The other end is unfixing, drops on housing (4) lining, draws the tongue that three diverse locations are arranged on the button (10); Be to be used for adjusting baffle plate (2) to the position of housing (4), so baffle plate (2) has three position locations, spring (3) is enclosed within the guide pillar (9); Because the diameter on the housing (4) is less than spring (3) diameter, so the range of movement of spring (3) is only in housing (4), therefore when baffle plate (2) outward during pull and stretch; Draw the tongue of button (10) to fall on the housing (4), locate, spring (3) also is compressed simultaneously; When drawing button (10) up to carry a bit, under the effect of spring (3) elastic force, baffle plate (2) can be pulled back to original position automatically.

Spanner among Fig. 4 (1) is enclosed within on the housing (4), and iron wire (16) is clipped in the middle, and iron wire (16) becomes circular arc type; And have certain elasticity, not yielding, cam (14) is enclosed within on the spanner (1); Cam (14) is peripheral to encase with rubber (15); Be to have more frictional property when clamping pencil, a rectangular groove is arranged at cam (14) bottom, just is enclosed within on spanner (1) the boss point.When down pressing spanner (1), three cams (14) rotate simultaneously outward, and pencil just can stretch into, and when unclamping spanner (1), because the effect of iron wire (16), cam (14) can rotate back into original position again, has clamped pencil.Housing (4) three limits have a rectangular raised line respectively, fasten with baffle plate (2).

In conjunction with Fig. 5,6, pencil sharpener (7) cutting tip coning, but its top is the circle of 0.6 millimeter of a diameter; Big end-grain cutting is cut partly suitable with pencil diameter, and such shape of tool has guaranteed that the pen that cutting is come out can be too sharp, can not interrupt easily; Also avoided the nib thickness of cutting uneven and because the waste that big cutting output causes, 36 holes that are being symmetrically distributed on the cutting tip, each plane are provided with 4 identical holes of diameter; Diameter increases progressively to big end from small end successively, when the driven by motor pencil sharpener rotates, along with action of inertia; Bits can throw away along with rotation direction, and fall in the pen bits box, have played the chip removal effect.Because motor (5) directly connects with pencil sharpener (7); Axis is on same straight line; Therefore has good axiality; Add the cooperation of detent mechanism and clamp mechanism, motor when having guaranteed cutting (5) rotating shaft, pencil sharpener (7) and pencil are on same straight line, and pen core is cut disconnected phenomenon when having avoided cutting.

Claims

1. electric pencil sharpener; It is characterized in that being equipped with in the housing (4) pencil sharpener (7), motor (5); Motor (5) tightens together through sleeve (6) and housing (4), and one section of the rotating shaft of motor (5) and pencil sharpener (7) is connected, and battery (12), switch (8), lead (11) and motor (5) have been formed a rotation control circuit; Spring (3), guide pillar (9), draw buckle (10), baffle plate (2) has constituted a detent mechanism; The pencil of different length can be adjusted to correct position through detent mechanism and cut, and spanner (1), iron wire (16), cam (14) have constituted a clamp mechanism, and the pen bits that cutting produces drop in pen bits boxes (17).

2. electric pencil sharpener according to claim 1; The positive pole that it is characterized in that described battery (12) links to each other with switch (8) one ends; Switch (8) other end links to each other with motor (5) is anodal, and motor (5) negative pole links to each other with battery (12) negative pole, and battery (12) can be that dry cell also can be a rechargeable battery.

3. electric pencil sharpener according to claim 1 is characterized in that fixing through a small convex groove between pen bits box (17) and housing bottom, and box (17) considered to be worth doing by pen but level is released.

4. electric pencil sharpener according to claim 1 is characterized in that the described pencil sharpener (7) and the shape of standard nib match, and the aperture on the pencil sharpener (7) has the chip removal effect.

5. electric pencil sharpener according to claim 1 is characterized in that drawing button (10) that three tongues are arranged, and can carry out the location of three positions.