CN2168734Y

CN2168734Y - Automatic pencil shapener

Info

Publication number: CN2168734Y
Application number: CN 93212072
Authority: CN
Inventors: 蒋兴仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-13
Filing date: 1993-05-13
Publication date: 1994-06-15
Anticipated expiration: 2003-05-13

Abstract

The utility model provides an automatic pencil sharpener. A pencil holder is driven to rotate by a motor, and then a pencil is sharpened. A purpose-made pencil sharpener with double sharpener blades is arranged under the pencil holder; the pencil sharpener can move up and down by a main spring under the pencil sharpener to keep appropriate dynamics of sharpening pencil; the pencil inserted into the pencil sharpener can be sharpened automatically by connecting with a power switch; the lead core outlet of the pencil sharpener is provided with a secondary spring on which a power switching-off switch is arranged; the lead core extending out can compress the spring to switch off a circuit after the pencil is sharpened, and then the sharpening can stop automatically. Two sharpener blades of the pencil sharpener with different pitches respectively sharpen a penholder and the lead core, the lead core is nonperishable by being born with smaller stress, and the sharpened pencil is thick and long with high durability. The pencil sharpener has the advantages that pencils can be sharpened automatically without careful operation, and lead cores can not be broken with high durability.

Description

Automatic pencil shapener

The utility model relates to a kind of stationery.Particularly a kind of automatic pencil-sharpening device.

To graduating from primary school, when learning, children use pencils from the kindergarten in a large number

Though at present manual popular multirow year of pencil sharpener, the child often is difficult for grasping, and easily broken lead for retractable pencil.BP UK1026396 provides a kind of electronic pencil sharpener, can start motor after inserting pencil makes pencil accept cutting, but must hold under the pencil and to insert and keep suitable dynamics, if power is big slightly, then motor stall or generation are disconnected plumbous, and have only pencil dial-out just can stopping cutting, start-stop automatically.

The purpose of this utility model just provides a kind of novel pencil-sharpening device, and its both could not must smart operation is good with pencil sharper automatically, again continuous lead for retractable pencil.

For realizing this purpose, the utility model drives the pen-holding device rotation with motor by travelling gear, below pen-holding device, be equipped with a special double blade pencil sharpener, being equipped with this pencil sharpener of main spring under the pencil sharpener can move up and down with this spring, be associated with the contact power-on switch on the spring, when in pen-holding device, inserting pencil, compress this spring and can connect circuit, the rotation of drive pen-holding device: double blade pencil sharpener below is spring once, be associated with the contact cut-off switch on it, after having cut lead, lead for retractable pencil stretches out outside the pencil sharpener, compresses this spring, can make circuit disconnect the motor stall; Double blade pencil sharpener cutter gradient is that 1:25--1:30 cuts penholder specially, and the bottom knife gradient is that 1:5--1:8 cuts lead for retractable pencil specially, makes the stressed less not frangibility of lead for retractable pencil, and pen core is more slightly long handy after being whittled into pencil.

Further specify below in conjunction with accompanying drawing; Among the figure: 1, motor, 2, pen-holding device, 3, pencil sharpener, 4, main spring, 5, inferior spring, 6, power supply.

1, motor: be the conventional DC toy motor, rotate by the gear driven pen-holding device.

2, pen-holding device: tubulose, in have jump ring can insert the pencil chucking, its two ends have bearing free to rotate, the pencil of insertion rotates thereupon when it rotates.

3, pencil sharpener: be positioned at the pen-holding device front end, be that with common pencil sharpener difference it is equipped with the blade of two different gradients, cut penholder and lead for retractable pencil respectively and make not frangibility of lead for retractable pencil.

4, main spring: below pencil sharpener, can promote pencil sharpener and move up and down, keep suitable cutting dynamics, connect power-on switch again, spring compression when inserting pencil, circuit is connected the motor rotation and is cut pen.

5, inferior spring: under pencil sharpener lead for retractable pencil outlet, be associated with cut-off switch on the spring, when pencil sharper well the back lead for retractable pencil stretch out this spring of compression, the stall of circuit disconnection motor.

6, power supply; For the 3--4 batteries is formed.

Effect of the present utility model is; 1, realize sharpening a pencil full automation, needn't meticulously operate, can the pencil automatic sharpening is good as long as pencil is inserted. 2, cut out the continuous lead for retractable pencil of pencil, and thick long durable.

So automatic pencil shapener provided by the utility model is simple in structure, and is easy to operate, safe and reliablely is particularly suitable for young classman and uses.

Claims

1, a kind of pencil-sharpening device, by motor, extraordinary pencil sharpener and contactor are formed, and it is characterized in that with motor by the rotation of gear driven pen-holding device, there is special pencil sharpener the pen-holding device below, be equipped with main spring under the cutter, insert pencil and compress this spring, circuit is connected driven by motor pen-holding device and pencil is rotated, be equipped with time spring under the pencil sharpener and the contact cut-off switch arranged on it, after cutting pen, the lead for retractable pencil that stretches out compresses this spring, circuit is disconnected stop to cut pen.

2, pencil-sharpening device according to claim 1 is characterized in that being equipped with on the used pencil sharpener two blades, and the cutter gradient is 1:2, and 5--1:3 cuts the pencil rod specially, and the bottom knife gradient is 1:5--1:8, cuts pen core specially.