CN212827578U

CN212827578U - Electric pencil sharpener

Info

Publication number: CN212827578U
Application number: CN202021410797.XU
Authority: CN
Inventors: 陈永忠
Original assignee: Jiangmen Zhongyu Technology Co ltd
Current assignee: Jiangmen Zhongyu Technology Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-03-30
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses an electronic pencil sharpener, including base, the cover body, drive assembly, rotary knife subassembly and dab the switch. The cover body covers the base to form a pen chip storage cavity, and the cover body is provided with a through hole; the tact switch is electrically connected with the driving component; the rotary cutter assembly comprises a cutter frame and a pencil sharpener, the cutter frame is provided with a pencil insertion hole and a transmission shaft, the rotary cutter assembly is arranged in the pencil scrap storage cavity, the pencil insertion hole corresponds to the through hole, and the transmission shaft is connected with the driving assembly; the compact structure is formed by the structural improvement and layout combination of the driving assembly, the rotary knife assembly and the tact switch; the electric pencil sharpener is simple and compact in structure, and the formed electric pencil sharpener is smaller in volume and convenient for students to carry.

Description

Electric pencil sharpener

Technical Field

The utility model relates to a stationery field, especially an electronic pencil sharpener.

Background

A pencil sharpener is a device used for sharpening pencils. At present, the pencil sharpener is manual or electric. The electric pencil sharpener is an electric stationery which drives a cutter through a motor to make the cutter sharpen a pencil point. The electric pencil sharpener on the market at present has a complex and scattered structure, so that the electric pencil sharpener is bulky and inconvenient for students to carry.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide an electronic pencil sharpener.

The utility model provides a technical scheme that its problem adopted is:

an electric pencil sharpener comprising:

a base;

the cover body covers the base to form a pen chip storage cavity, and the cover body is provided with a through hole;

a drive assembly located within the base;

the light touch switch is positioned in the base and is electrically connected with the driving assembly;

the rotary cutter assembly comprises a cutter frame and a pencil sharpener arranged on the cutter frame, a pencil insertion hole is formed in one end of the cutter frame, a transmission shaft is arranged at the other end, far away from the pencil insertion hole, of the cutter frame, the rotary cutter assembly is arranged in the pencil scrap storage cavity, the pencil insertion hole corresponds to the through hole, and the transmission shaft is connected with the driving assembly;

when a pencil is inserted into the tool rest, the light touch switch is triggered, and the driving assembly drives the rotary cutter assembly to rotate around the pencil, so that the pencil is sharpened.

Further, the tool rest rotates by taking the transmission shaft as a rotating shaft, and the pencil sharpener rotates around the outer side of the pencil.

Further, the cover body comprises a cover wall and a top cover, and the top cover is detachably connected above the cover wall; the edge of the top cover is provided with anti-skid grains.

Furthermore, a clamping groove is formed in the periphery of the through hole, a clamping convex piece is arranged on the periphery of the pencil inserting hole of the tool rest, and the clamping convex piece is clamped in the clamping groove.

Further, the height of the clamping groove is larger than that of the clamping convex piece.

Further, a protection ring is arranged above the clamping groove.

Further, the driving assembly comprises a motor and a gear box, an output shaft of the motor is connected with the gear box, and an output shaft of the gear box is connected with the transmission shaft of the tool rest.

Further, the gearbox comprises a plurality of meshed gears, an output shaft of the gearbox being connected to one of the gears; the tact switch is positioned below an output shaft of the gear transmission case.

Further, the base still be equipped with the battery that the motor electricity is connected, the battery with the motor is located the bottom of base, gear change box is located the motor with the top of battery.

Further, the battery is a strip-shaped battery, and the battery is horizontally arranged at the bottom of the base.

The electric pencil sharpener at least has the following beneficial effects: the shell is formed by a base and a cover body, and a pencil scrap storage cavity is formed between the base and the cover body; the working assembly only consists of a driving assembly, a rotary cutter assembly and a tact switch, and the structure is simple; in addition, a compact structure is formed by structural improvement and layout combination of the driving assembly, the rotary cutter assembly and the tact switch; the electric pencil sharpener is simple and compact in structure, and the formed electric pencil sharpener is smaller in volume and convenient for students to carry.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples.

FIG. 1 is a structural diagram of an electric pencil sharpener of the present invention;

FIG. 2 is an exploded view of the electric pencil sharpener of the present invention;

FIG. 3 is an internal structural view of the base;

fig. 4 is a structural view of the tool holder in fig. 2.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, an embodiment of the present invention provides an electric pencil sharpener, which includes a base 100, a cover 200, a driving assembly 300, a rotary cutter assembly 500 and a tact switch 400.

The cover body 200 covers the base 100 to form a pen dust storage cavity 230, and the cover body 200 is provided with a through hole 240; the driving assembly 300 is located in the base 100; the tact switch 400 is located in the base 100, and the tact switch 400 is electrically connected with the driving assembly 300; the rotary cutter assembly 500 comprises a cutter holder 510 and a pencil sharpener 520 mounted on the cutter holder 510, wherein one end of the cutter holder 510 is provided with a pencil insertion hole 511, the other end of the cutter holder 510, which is far away from the pencil insertion hole 511, is provided with a transmission shaft 513, the rotary cutter assembly 500 is placed in the pencil waste storage chamber 230, the pencil insertion hole 511 corresponds to the through hole 240, and the transmission shaft 513 is connected with the driving assembly 300; when a pencil is inserted into the holder 510, the tact switch 400 is activated, and the driving assembly 300 drives the rotary cutter assembly 500 to rotate around the pencil, thereby sharpening the pencil.

In this embodiment, the housing of the electric pencil sharpener is composed of a base 100 and a cover 200, the cover 200 covers the base 100 to form a pencil scrap storage chamber 230, the rotary cutter assembly 500 is located in the pencil scrap storage chamber 230, when a pencil is inserted into the rotary cutter assembly 500 for sharpening, pencil scraps are stored in the pencil scrap storage chamber 230, the cover 200 is removed from the base 100, and then the pencil scraps in the pencil scrap storage chamber 230 can be removed.

One end of the pencil is inserted into the through hole 240 of the cover 200, the pencil enters the rotary cutter assembly 500 through the pencil insertion hole 511, and the pencil is pushed against the rotary cutter assembly 500 to move the rotary cutter assembly 500, thereby triggering the tact switch 400. The tact switch 400 is a normally open and normally closed contact switch. The tact switch 400 is closed and the driving assembly 300 drives the rotary cutter assembly 500 to rotate around the pencil, thereby sharpening the pencil.

The electric pencil sharpener forms a compact structure through structural improvement and layout combination of the driving assembly 300, the rotary knife assembly 500 and the tact switch 400; the formed electric pencil sharpener has smaller volume and is convenient for students to carry.

Further, the tool holder 510 rotates with the drive shaft 513 as a rotation axis; the sharpener 520 rotates around the outside of the pencil, and the sharpener 520 rotates in a planetary manner about the transmission shaft 513 as a rotation axis. The sharpener 520 is a blade. The sharpener 520 is disposed obliquely with respect to the straight line of the driving shaft 513 to sharpen one end of the pencil by continuously sharpening the outer side of the one end of the pencil.

Referring to fig. 4, in addition, the blade holder 510 is provided with a blade mount 530, the blade mount 530 including a support 533 at the bottom, a side stop 532 at the side, and a fixture 531. The holder 533 is provided with a limiting groove 535 for limiting the position of the bottom edge of the sharpener 520. The side limiting member 532 is used to limit the position of the side of the pencil sharpener 520. The fixing member 531 has an inclined surface to allow the pencil sharpener 520 to be obliquely mounted to the holder 510. The fixing member further has a screw hole 534 so that the pencil sharpener 520 can be mounted on the holder 510 by a screw. This ensures that the sharpener 520 can be accurately installed while the sharpener 520 does not lose shape during pencil sharpening.

Referring to fig. 2, further, the housing 200 includes a housing wall 220 and a top cover 210, and the top cover 210 is detachably coupled to the upper side of the housing wall 220. The edge of the top cover 210 is provided with an anti-slip pattern 260. The through hole 240 is located at the center of the top cover 210; the anti-slip pattern 260 is a strip-shaped concave pattern, the anti-slip patterns 260 are uniformly arranged around the through hole 240, and one end of the strip-shaped anti-slip pattern 260 extends to the outer edge of the top cover 210. The provision of the non-slip pattern 260 facilitates the user in opening the cap 210.

In addition, the top cover 210 is further provided with a limiting ring 211, and the limiting ring 211 is arranged outside the through hole 240. When the rotary cutter assembly 500 is connected with the top cover 210, the limiting ring 211 is sleeved on the outer side of the cutter holder 510 to limit the cutter holder 510, so that the cutter holder 510 is prevented from shaking, the concentric high precision of the rotary cutter assembly 500 is ensured, and the pen point is not easy to break off when the rotary cutter assembly 500 sharpens a pencil. In addition, the stop collar 211 also facilitates installation of the rotary cutter assembly 500.

Further, an engaging groove 241 is formed on the periphery of the through hole 240, an engaging protrusion 512 is formed on the periphery of the pencil insertion hole 511 of the holder 510, and the engaging protrusion 512 is engaged with the engaging groove 241. The engaging protrusion 512 is annular, and the width of the ring is 0.1cm to 0.3 cm. The part of the tool holder 510 where the engaging protrusion 512 is located can be inserted through the through hole 240 by a large force, so that the engaging protrusion 512 is engaged with the engaging groove 241.

Further, the height of the engaging groove 241 is larger than the height of the engaging protrusion 512. Wherein the height refers to the length of the member in the up-down direction. When the height of the engaging groove 241 is greater than the height of the engaging protrusion 512, the rotary cutter unit 500 can move in the vertical direction within the range defined by the engaging groove 241, and thus contact the tact switch 400.

Further, a guard ring 250 is provided above the engagement groove 241. The protective ring 250 is made of soft glue. The protection ring 250 covers the portion of the holder 510 where the engaging protrusion 512 is located, so as to prevent the user from touching the rotating holder 510 and being injured after inserting the pencil, thereby protecting the holder.

Referring to fig. 1 and 3, further, the driving assembly 300 includes a motor 310 and a gear box 320, an output shaft of the motor 310 is connected to the gear box 320, and an output shaft of the gear box 320 is connected to a transmission shaft 513 of the tool holder 510 through a column sleeve of the base 100. The motor 310 drives the rotary cutter assembly 500 to rotate through the gear box 320.

It should be noted that the transmission shaft 513 and the output shaft of the gear box 320 are located in the column sleeve of the base 100, so as to ensure high concentricity and precision, and make the pen tip not easy to break when sharpening a pencil.

Further, the gearbox 320 comprises a plurality of meshed gears 321, an output shaft of the gearbox 320 being connected to one of the gears 321; the tact switch 400 is located below the output shaft of the gear box 320. The output shaft of the motor 310 is coupled to a start gear 322 of the plurality of gears 321 and the output shaft of the gear box 320 is coupled to a tail gear 323 of the plurality of gears 321. It should be noted that the width of the other gear directly engaged with the final gear 323 is large enough to allow the final gear 323 to be still engaged with the other gear when the final gear 323 is pressed and moved by the tool holder 510.

Further, an elastic member (not shown) such as a spring may be provided between the final gear 323, which is connected to the output shaft of the transmission case 320, and the outer case of the transmission case 320. After the pencil is inserted into the tool holder 510, the tail gear 323 is pressed to move towards the tact switch 400, and the tact switch 400 is triggered; after the pencil is pulled out, the elastic piece is favorable for resetting the tail gear 323.

Further, the base 100 is further provided with a battery 600 electrically connected with the motor 310, the battery 600 and the motor 310 are located at the bottom of the base 100, and the gear box 320 is located above the motor 310 and the battery 600. In addition, the battery 600 is a long cylindrical battery 600, and the battery 600 is laid down on the bottom of the base 100. The arrangement of the battery 600, the motor 310 and the gear transmission case 320 on the base 100 enables the structure to be more compact, the volume of the base 100 is greatly reduced, and then the volume of the electric pencil sharpener is reduced, and the electric pencil sharpener is convenient for students to carry.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the technical effects of the present invention can be achieved by the same means, which all belong to the protection scope of the present invention.

Claims

1. An electric pencil sharpener, comprising:

a base;

a drive assembly located within the base;

2. An electric pencil sharpener as defined in claim 1 in which said holder rotates about said drive shaft, said sharpener rotating about the outside of the pencil.

3. The electric pencil sharpener of claim 1, wherein the housing comprises a housing wall and a top cover, the top cover being removably attached over the housing wall; the edge of the top cover is provided with anti-skid grains.

4. The electric pencil sharpener as claimed in claim 3, wherein a snap groove is formed in the periphery of the through hole, and a snap projection is formed in the periphery of the pencil insertion hole of the tool holder and is snapped in the snap groove.

5. The electric pencil sharpener as claimed in claim 4, wherein the height of said engaging groove is greater than the height of said engaging projection.

6. The electric pencil sharpener as claimed in claim 4 or 5, wherein a protection ring is provided above the engaging groove.

7. An electric pencil sharpener according to claim 1 where the drive assembly includes a motor and a gear box, the motor having an output shaft connected to the gear box, the gear box having an output shaft connected to the drive shaft of the tool holder.

8. An electric pencil sharpener as claimed in claim 7 in which said gear box includes a plurality of meshed gears, an output shaft of said gear box being connected to one of said gears; the tact switch is positioned below an output shaft of the gear transmission case.

9. An electric pencil sharpener as claimed in claim 7 or 8 wherein said base is further provided with a battery electrically connected to said motor, said battery and said motor being located at the bottom of said base, said gear box being located above said motor and said battery.

10. An electric pencil sharpener as claimed in claim 9 wherein said battery is an elongated battery lying on the bottom of said base.