CN113442628A

CN113442628A - Electric pencil sharpening tool

Info

Publication number: CN113442628A
Application number: CN202110654643.8A
Authority: CN
Inventors: 朱灿华; 刘佳; 蓝田; 何莉丽
Original assignee: Huali College Guangdong University Of Technology
Current assignee: Huali College Guangdong University Of Technology
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-09-28
Anticipated expiration: 2041-06-11
Also published as: CN113442628B

Abstract

The invention discloses an electric pencil sharpening tool, which comprises a shell, a motor, a power supply and a pencil sharpening device, wherein the pencil sharpening device comprises a driving wheel, a driven wheel and a blade, the driving wheel is fixedly connected to an output shaft of the motor, the driven wheel is rotatably arranged in the shell, the driving wheel and the driven wheel are in transmission connection through a crawler, and the crawler is provided with a notch for mounting the blade; offer the regulation hole that corresponds with the blade on the casing, be equipped with angle adjusting device in the regulation hole, angle adjusting device includes the pen socket, shell fragment and pivot, in the pivot was fixed in the regulation hole, run through on the pen socket and supply the spacing hole of pencil male, the extending direction and the track direction of motion slope setting in spacing hole, the shell fragment corresponds the setting with spacing hole, the shell fragment has all the time to lean on the trend on the pencil, pen socket and pivot normal running fit to make the pen socket swing in the regulation hole. The pencil lead cutting machine has the advantages of simple structure, convenience in operation and high cutting efficiency, and the cut pencil lead can keep the aesthetic feeling of wood grains and effectively avoid the breakage of a pencil lead.

Description

Electric pencil sharpening tool

Technical Field

The invention relates to the technical field of stationery, in particular to an electric pencil sharpening tool.

Background

The pencil is an indispensable tool in daily life, and can be used for writing, drawing (painting), filling machine-readable cards and the like. The pencil can be used only by cutting a certain amount of wood chips and exposing the pencil lead, and a user can manually cut the pencil by a cutter, so that a satisfactory pencil head can be cut at will according to own preference, and the aesthetic feeling of wood grains can be kept; for inexperienced users, such as children, primary and secondary school students, the pencil sharpening is slow, the pencil lead is broken off in the pencil sharpening process, and the shape of the sharpened pencil head is irregular, so that the aesthetic feeling of wood grains cannot be kept. Therefore, the pencil sharpener is put out in the market, and the cut pencil can be obtained only by inserting one end of the pencil into the sharpening hole of the pencil sharpener correspondingly and then rotating the pencil or the pencil sharpener, so that the cut pencil point is conical although certain efficiency is improved, and the aesthetic feeling of wood grains cannot be kept; furthermore, the direction of movement of the blade relative to the pencil in such a sharpener is relatively perpendicular to the wood grain direction of the pencil (i.e., the direction of extension of the pencil), which causes some wear to the blade, which makes the blade dull and tends to cut the lead. Hand-operated and electric pencil sharpeners have also been introduced in the market, but the above problems still remain.

Disclosure of Invention

The present invention is directed to solving the above problems and providing an electric pencil sharpener.

The invention realizes the purpose through the following technical scheme:

an electric pencil sharpening tool comprises a shell, wherein a motor, a power supply and a pencil sharpening device are arranged in the shell, the pencil sharpening device comprises a driving wheel, a driven wheel and a blade, the driving wheel is fixedly connected to an output shaft of the motor, the driven wheel is rotatably arranged in the shell, the driving wheel and the driven wheel are in transmission connection through a crawler, and a notch for mounting the blade is formed in the crawler; the pencil sharpener is characterized in that an adjusting hole corresponding to the blade is formed in the shell, an angle adjusting device is arranged in the adjusting hole and comprises a pencil cap, an elastic sheet and a rotating shaft, the rotating shaft is fixed in the adjusting hole, a limiting hole for inserting a pencil is formed in the pencil cap in a penetrating mode, the extending direction of the limiting hole is inclined in the moving direction of the caterpillar band, the elastic sheet corresponds to the limiting hole, the elastic sheet always has a tendency of abutting against the pencil, and the pencil cap is matched with the rotating shaft in a rotating mode so that the pencil cap swings in the adjusting hole.

Furthermore, a salient point is arranged on the pen sleeve, a plurality of grooves are arranged in the adjusting hole, the grooves are arranged corresponding to the salient point and are in clamping fit, and the grooves are distributed circumferentially and use the rotating shaft as the circle center; the pen cap is convenient to position, the relative angle is kept, and the operation is more convenient.

Furthermore, a pencil scrap box is detachably connected in the shell, an opening is formed in the top of the pencil scrap box, and the opening is arranged corresponding to the lower side of the track; the pencil scraps which are cut off are convenient to collect, the treatment of the pencil scraps is convenient, and the cleanness is kept.

Furthermore, an inductive switch is arranged on the shell and corresponds to the limiting hole; realize the auto-induction, improve intelligent degree, improve the cutting efficiency of pencil.

Furthermore, a circuit board, a power switch and a charging interface are arranged in the shell, and the power supply, the motor, the inductive switch, the power switch and the charging interface are respectively and electrically connected with the circuit board; the pencil sharpening tool is convenient to control the starting or the closing of the pencil sharpening tool, and is convenient and simple to operate.

Furthermore, an installation shaft penetrates through the center of the driven wheel, a first support is fixedly connected in the shell, and the first support is fixedly connected with the installation shaft; the driven wheel is convenient to mount, firm in connection and stable in movement.

Further, a second support is fixedly connected in the shell, and the motor is fixedly connected to the second support; the motor is convenient to install and firm in connection.

Furthermore, four blades are uniformly distributed along the crawler; the cutting is faster and the efficiency is higher.

Further, the shell is made of transparent materials; the pencil is convenient to observe the cutting condition of the pencil head, control the rotation of the pencil and cut the pencil into a satisfactory shape by an operator.

The invention has the beneficial effects that: firstly, a driving wheel is fixedly connected to an output shaft of a motor, a driven wheel is rotatably arranged in a shell, the driving wheel and the driven wheel are in transmission connection through a crawler belt, a notch for mounting a blade is formed in the crawler belt, the moving direction of the crawler belt and the extending direction of a limiting hole are obliquely arranged, and an adjusting hole is formed corresponding to the blade; when the pencil sharpener is used, a pencil is only required to be inserted into the limiting hole, the power supply provides power for the motor, the motor runs to drive the driving wheel to rotate, the driven wheel also runs synchronously due to the connection effect of the crawler, the crawler rotates circularly, the adjusting hole and the blade are arranged correspondingly, the blade is arranged on the notch of the crawler, the moving direction of the crawler is obliquely arranged with the extending direction of the limiting hole, the blade cuts the pencil along the extending direction of the pencil at a certain included angle, the abrasion of the blade is avoided, the lead core is ensured not to be twisted and broken in the cutting process, meanwhile, the pencil sharpener can cut the pencil head into a pyramid shape, the effect like manual cutting is achieved, and the attractiveness of wood grains is kept;

secondly, an angle adjusting device is arranged in the adjusting hole and comprises a pen cap, an elastic sheet and a rotating shaft; when the pencil sharpener is used, after a pencil is inserted into the limiting hole, an operator can enable the pen cap to rotate around the rotating shaft so that the pen cap swings in the adjusting hole, and therefore the inclined included angle between the extending direction of the limiting hole and the moving direction of the track is changed, the taper of cut pen points is different, the pen cap can be stopped at a proper position according to the idea of the operator, and accordingly the satisfactory pen points are cut, and the cut wood grains are more in line with the aesthetic sense of the operator; moreover, the elastic sheet is arranged corresponding to the limiting hole, and the elastic sheet always tends to be abutted against the pencil, so that the elastic sheet can protect the pencil lead of the pencil, and the possibility of breakage of the pencil lead is further avoided; generally, the pencil lead cutting machine has the advantages of simple structure, convenience in operation and high cutting efficiency, and the cut pencil lead can keep the aesthetic feeling of wood grains and effectively avoid the breakage of a pencil lead.

Drawings

FIG. 1 is a schematic overall structure diagram of a first embodiment of the present invention;

FIG. 2 is an exploded view of a first embodiment of the present invention;

FIG. 3 is a schematic sectional view of the first embodiment of the present invention;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is a schematic structural diagram of an angle adjustment apparatus according to a first embodiment of the present invention;

FIG. 6 is a sectional view of a second embodiment of the present invention;

fig. 7 is a schematic structural diagram of an angle adjustment device according to a second embodiment of the present invention.

The reference numerals are explained below:

1-a shell; 1.1-adjustment holes; 1.2-interlayer; 1.3-grooves; 11-an upper shell; 12-a lower housing; 2, a motor; 3-a power supply; 4-a pencil sharpening device; 41-driving wheel; 42-a driven wheel; 43-a blade; 44-a track; 44.1-notch; 45-mounting the shaft; 46-a first support; 47-a second support; 5-a pencil scrap box; 6-a circuit board; 7-a power switch; 8-a charging interface; 9-angle adjustment means; 91-pen cap; 91.1-limiting hole; 91.2-bumps; 92-a spring plate; 93-rotating shaft.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and detailed description. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "left", "right", "inner", "outer" and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example one

As shown in fig. 1 to 5, the present embodiment provides an electric pencil sharpener, which includes a housing 1, a motor 2, a power supply 3 and a pencil sharpening device 4 are disposed in the housing 1, the pencil sharpening device 4 includes a driving wheel 41, a driven wheel 42 and a blade 43, the driving wheel 41 is fixedly connected to an output shaft of the motor 2, the driven wheel 42 is rotatably disposed in the housing 1, the driving wheel 41 and the driven wheel 42 are in transmission connection through a track 44, and the track 44 is provided with a notch 44.1 for mounting the blade 43;

offer the regulation hole 1.1 that corresponds with blade 43 on casing 1, be equipped with angle adjusting device 9 in the regulation hole 1.1, angle adjusting device 9 includes pen socket 91, shell fragment 92 and pivot 93, pivot 93 is fixed in the regulation hole 1.1, run through on the pen socket 91 and supply pencil male spacing hole 91.1, spacing hole 91.1's extending direction and track 44 direction of motion slope setting, shell fragment 92 corresponds the setting with spacing hole 91.1, shell fragment 92 has the trend of leaning on the pencil all the time, pen socket 91 and pivot 93 normal running fit, so that pen socket 91 swings in regulation hole 1.1.

It is worth mentioning that an interlayer 1.2 (refer to fig. 2) is further arranged in the shell 1, and other stationery such as a power line, a screwdriver, a spare blade 43 and an eraser can be placed in the interlayer, so that the storage is convenient, and the assembly and disassembly of the blade 43 are also convenient.

Preferably, the blade 43 is mounted on the slot 44.1 by means of screws, facilitating the replacement of the blade 43; the two ends of the blade 43 extend along the vertical direction, so that the width of the blade 43 is larger than the diameter of the limiting hole 91.1, and the cutting is complete and uniform.

Can dismantle in the casing 1 and be connected with a bits box 5, uncovered has been seted up at 5 tops of bits box, uncovered and the corresponding setting in track 44 below.

Specifically, the pencil waste box 5 is of a push-pull type structure and is detachably connected to the shell 1 like a drawer; when the pencil scraps need to be cleaned, the pencil scraps box 5 is pulled out, the pencil scraps are poured into the garbage can, and finally the pencil scraps box 5 is pushed back to the original position.

An inductive switch is arranged on the shell 1 and corresponds to the limiting hole 91.1; a circuit board 6, a power switch 7 and a charging interface 8 are further arranged in the shell 1, and the power supply 3, the motor 2, the inductive switch, the power switch 7 and the charging interface 8 are electrically connected with the circuit board 6 respectively; when charging, only need with the power cord with charge interface 8 be connected can.

Preferably, the power supply 3 adopts a storage battery, and the motor 2 adopts a miniature motor, so that the pencil sharpener is convenient to manufacture, is smaller and lighter, and is convenient to carry and use; the inductive switch adopts infrared induction, and the response is sensitive and quick.

A mounting shaft 45 penetrates through the center of the driven wheel 42, a first bracket 46 is fixedly connected in the shell 1, and the first bracket 46 is fixedly connected with the mounting shaft 45; a second bracket 47 is further fixedly connected in the housing 1, and the motor 2 is fixedly connected to the second bracket 47.

Preferably, the number of the blades 43 is four, but not limited to four, along the track 44, and one or several blades can be arranged according to actual production to ensure the cutting speed.

The shell 1 is made of transparent materials, and can be made of transparent plastics or glass; preferably, the housing 1 is formed by assembling and connecting an upper housing 11 and a lower housing 12, and the adjusting hole 1.1 is opened on the upper housing 11.

The specific working principle of the invention is as follows: firstly, a power switch 7 is turned on, then a pencil to be cut is slowly inserted into a limiting hole 91.1, an inductive switch detects that the pencil is in the limiting hole 91.1, then a power supply 3 transmits power to a motor 2, the motor 2 drives a driving wheel 41 to rotate, a driven wheel 42 and the driving wheel 41 synchronously run under the action of a crawler belt 44, as an adjusting hole 1.1 and a blade 43 are correspondingly arranged, the blade 43 is arranged on a notch 44.1 of the crawler belt 44, the extending direction of the limiting hole 91.1 and the moving direction of the crawler belt 44 are obliquely arranged, and under the action of an elastic sheet 92, the pencil is propped against the crawler belt 44, so that the blade 43 cuts the pencil along the extending direction of the pencil and with a certain included angle; after cutting a conical surface, an operator rotates a pencil to enable the conical surface to abut against the elastic sheet 92, due to the abutting action of the elastic sheet 92, the exposed pencil lead is effectively protected, the possibility of breakage is avoided, the pencil is continuously and slowly inserted, the cutting of the current conical surface is completed, then the next conical surface is rotated until the cutting of the pencil head is completed, the pencil head is cut into a pyramid shape like the effect of manual cutting, the aesthetic feeling of wood grains is kept, the pencil is drawn out after the pencil is cut to a satisfactory degree, the induction switch does not detect the pencil, the motor 2 is stopped running, and cut pencil scraps can fall along the notch 44.1 and are gathered in the pencil scrap box 5;

when the pencil is rotated, an operator can also move the pencil in the horizontal direction, even if the pencil sleeve 91 rotates around the rotating shaft 93, the pencil sleeve 91 swings in the adjusting hole 1.1, the operator can keep the pencil at a certain angle according to own idea, so that the inclined included angle of the extending direction of the limiting hole 91.1 relative to the moving direction of the crawler belt 44 is changed, and then the pencil is slowly inserted, so that the taper of the cut pencil head is different, and the aesthetic requirement of the operator on wood grains is better met.

Example two

As shown in fig. 6 and 7, the present embodiment has substantially the same structure as that disclosed in the first embodiment, except that certain changes are made on the pen cap 91 and the adjusting hole 1.1, which are as follows: the pen cap 91 is further provided with a convex point 91.2, the adjusting hole 1.1 is further internally provided with a plurality of grooves 1.3, the grooves 1.3 are correspondingly arranged with the convex point 91.2 and are in clamping fit, and the grooves 1.3 are circumferentially distributed and use the rotating shaft 93 as the circle center.

Preferably, the arc-shaped angle formed by the grooves 1.3 ranges from 30 degrees to 60 degrees; specifically, the arc-shaped angle formed by the grooves 1.3 is 35 degrees, and the arc-shaped angle formed between the adjacent grooves 1.3 is 5 degrees, so that a user can select a proper angle, and the pen point can cut a satisfactory taper; the upper wall and the lower wall of the adjusting hole 1.1 are both provided with grooves 1.3, and the bottom surface and the top surface of the pen cap 91 are also correspondingly provided with convex points 91.2, so that the clamping connection is relatively firm, and the loosening is avoided.

The specific working principle is substantially the same as that in the first embodiment, and only when the angle is adjusted, the operator can swing the pen cap 91 in the adjusting hole 1.1 according to the same idea; the difference is that when the convex point 91.2 is clamped into the groove 1.3, a 'click' sound is generated, the convex point 91.2 is just clamped into the corresponding groove 1.3, so that the pen cap 91 is kept at the angle, an operator does not need to keep the pencil at the angle, and the pencil only needs to be slowly inserted.

The foregoing shows and describes the general principles, features and advantages of the invention. It will be understood by those skilled in the art that the invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an electronic instrument of cutting a pencil, includes casing (1), be equipped with motor (2), power (3) in casing (1) and cut a device (4), its characterized in that: the pencil sharpening device (4) comprises a driving wheel (41), a driven wheel (42) and a blade (43), the driving wheel (41) is fixedly connected to an output shaft of the motor (2), the driven wheel (42) is rotatably arranged in the shell (1), the driving wheel (41) and the driven wheel (42) are in transmission connection through a crawler belt (44), and a notch (44.1) for mounting the blade (43) is formed in the crawler belt (44);

the pencil sharpener is characterized in that an adjusting hole (1.1) corresponding to the blade (43) is formed in the shell (1), an angle adjusting device (9) is arranged in the adjusting hole (1.1), the angle adjusting device (9) comprises a pencil sleeve (91), an elastic sheet (92) and a rotating shaft (93), the rotating shaft (93) is fixed in the adjusting hole (1.1), a limiting hole (91.1) for inserting a pencil penetrates through the pencil sleeve (91), the extending direction of the limiting hole (91.1) and the moving direction of the crawler belt (44) are obliquely arranged, the elastic sheet (92) and the limiting hole (91.1) are correspondingly arranged, the elastic sheet (92) always has a tendency of abutting against the pencil, and the pencil sleeve (91) is rotationally matched with the rotating shaft (93) so that the pencil sleeve (91) swings in the adjusting hole (1.1).

2. The power sharpener of claim 1, wherein: still be equipped with bump (91.2) on pen socket (91), still be equipped with a plurality of recesses (1.3) in adjusting hole (1.1), recess (1.3) with bump (91.2) correspond and set up and joint cooperation, and are a plurality of recess (1.3) are the circumference and distribute and with pivot (93) are the centre of a circle.

3. The power sharpener of claim 1, wherein: the pencil scrap box is characterized in that a pencil scrap box (5) is detachably connected into the shell (1), an opening is formed in the top of the pencil scrap box (5), and the opening corresponds to the lower portion of the crawler belt (44).

4. The power sharpener of claim 1, wherein: the shell (1) is provided with an inductive switch, and the inductive switch is arranged corresponding to the limiting hole (91.1).

5. The power sharpener of claim 4 wherein: still be equipped with circuit board (6), switch (7) and interface (8) charge in casing (1), power (3) motor (2) inductive switch (7) interface (8) charge respectively with circuit board (6) electric connection.

6. The power sharpener of claim 1, wherein: an installation shaft (45) penetrates through the center of the driven wheel (42), a first support (46) is fixedly connected in the shell (1), and the first support (46) is fixedly connected with the installation shaft (45).

7. The power sharpener of claim 6, wherein: still the rigid coupling has second support (47) in casing (1), motor (2) rigid coupling in on second support (47).

8. The power sharpener of claim 1, wherein: the blades (43) are uniformly distributed with four blades along the crawler belt (44).

9. The power sharpener of claim 1, wherein: the shell (1) is made of transparent materials.