CN87211203U

CN87211203U - Electric pencil-sharpener

Info

Publication number: CN87211203U
Application number: CN 87211203
Authority: CN
Inventors: 杜苗华; 葛美荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-09-17
Filing date: 1987-09-17
Publication date: 1988-11-16

Abstract

The utility model relates to an electric cutting tool for wooden pencil. The torsional moment output from an electrical motor is amplified by a tertiary speed reducing gear and directly drives the knife blade to rotate. In this way, a pencil is capable of being cut quickly. In order to prevent the pen point of a lead cord being broken off, the knife blade tilts at 20 DEG to 30 DEG, and the projection of a cutting edge is coincident with the central line of a knife frame. The utility model has the advantages of small size, low cost, high reliability, high work efficiency, safety, electricity saving, and convenience and is applicable to a common wooden pencil.

Description

Electric pencil-sharpener

The utility model relates to the cutting of pencil, especially the blade cutting tool of normal wood rod pencil.

Use simple blade, manual cutting pencil, time-consuming bothersome, also dangerous.Safe planing tool work efficiency is not high, and nib is easily broken, and is undesirable yet.Hand gear made in U.S.A rolls graver, is difficult to make, and volume is also big, must fixedly mount again, uses inconvenience.The pencil turning cutter that day makes, volume is bigger, and inconvenience is carried, power consumption height (4 joints 2 ^#), waste big (invalid idle running), price is higher.

The purpose of this utility model just provides a kind of safe, quick, convenient, power saving, inexpensive electronic penknife, to adapt to various circles of society, the needs of especially high-level unit.

The utility model is achieved in that the moment of torsion of high speed direct current generator output, after being amplified by three grades of reduction gearing, directly drives the blade rotation, thereby finishes the task of cutting pencil.

Adopt motor-gear drive, reliable operation, compact conformation, be easy to carry (can put into the student stationery box), work efficiency improves more than 2 times than America and Japan product.Starter button cooperates with security personnel's button, has constituted reliable dual fail-safe.Cutting quality height, nib lead for retractable pencil are not rolled over constantly, and be very reliable.Simple to operate, easy to use, save electric energy, cost is also low.

Below in conjunction with accompanying drawing, utility model is further described.

Fig. 1 is for facing structural representation.Fig. 2 is the plan structure schematic diagram.Sequence number repeats, and is beneficial to knowledge figure.

This machine mainly is made up of battery pack 9, motor 8, three grades of train of

reduction gears

12,13,14, knife rest 15, starter button 5, security personnel's button 2 and plastic structural parts etc.Battery 9 is 2 joints 5 ^#Battery.

Motor 8 is a toy motor, is inverted on the base plate 10 its output shaft gear 11 and gear 12 engagements.

Gear 12,13 is a plastics duplex shaft gear, and the shaft gear 14 output shaft side of being bodies are to drive knife rest 15.Gear 12,13,14 all is supported among the sliding bearing of base plate 10 and lower cover 17 compositions.

Knife rest 15 is driven by gear 14, rotates around pilot hole 7 center lines.Blade 16 and knife rest 15 are connected by screw.The normal of blade plane becomes 20 °～30 ° angles with horizontal line, and the cutting edge projection overlaps with knife rest 15 center lines (pilot hole 7 center lines).

The break-make that the clutch by elastic copper sheet 3,4 contacts of security personnel's button 2 and starter button 5 comes control circuit.

Operation principle is as follows:

When crumb loading window 1 was shut, security personnel's button 2 was pushed copper sheet 3 to right side, near copper sheet 4.Pencil 6 inserts pilot hole 7, and then starter button 5 is pushed the left side to, and copper sheet 3 is contacted with 4, forms closed circuit, motor 8 startings, and it exports the gear 11 of axle head, after being slowed down by

tertiary gear

12,13,14, drives knife rest 15 rotations, finishes the cutting task.

The centrifugal pencil bits that disperse for crumb loading window 1 is encapsulated in it, keep environmental sanitation.

Extract pencil 6 out, copper sheet 4 is shifted to the right side by self elastic force with starter button 5, copper sheet 3 and 4 is disengaged, disconnecting circuit, motor 8 stalls.

When crumb loading window 1 was opened, copper sheet 3 was shifted to the left side by self elastic force with security personnel's button 2, has strengthened the distance between copper sheet 3 and 4 contacts, and copper sheet 3 and 4 can't be connected, and motor 8 starting rotations give rise to trouble and danger when preventing that crumb loading window 1 from opening.

Claims

1, the electronic penknife of a kind of penknife, especially Wood-bar pencil mainly is made up of direct current generator 8, train of reduction gears 12,13,14, knife rest 15, security personnel's button 2, starter button 5, copper sheet 3,4, battery pack 9 and plastic construction assembly 10, it is characterized in that:

A. motor 8 is by 2 joints 5 ^#Battery pack 9 drivings, and be inverted on the plastic bottom board 10, its output shaft gear 11 and 12 engagements of one-level duplex shaft gear by 13, three grades of shaft gears 14 of secondary duplex shaft gear, drive knife rest 15 and rotate, finish the cutting task with blade 16 around pilot hole 7 center lines;

B. its every rooted tooth wheel shaft all is supported among the combined sliding bearing of plastic bottom board 10 and lower cover 17.

2, electronic penknife as claimed in claim 1 is characterized in that: be loaded on the blade 16 on the knife rest 15, the normal on its cutter hub plane becomes 20 °～30 ° angles with horizontal line, and cutting edge projection and knife rest 15 central lines.