CN113580821B

CN113580821B - Electric pencil sharpener

Info

Publication number: CN113580821B
Application number: CN202111069725.2A
Authority: CN
Inventors: 金响标
Original assignee: Yiwu Dingbang Stationery And Sporting Goods Co ltd
Current assignee: Yiwu Dingbang Stationery And Sporting Goods Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-10-14
Anticipated expiration: 2041-09-13
Also published as: CN113580821A

Abstract

The invention discloses an electric pencil sharpener, which comprises an upper cover component provided with a floating pencil sharpener, a scrap collecting box with an opening at the upper part and a base provided with a driving component, wherein the driving component is arranged on the base; the driving component drives the pencil sharpener to rotate, and the upper cover covers the scrap collecting box to close the upper opening; the scrap collecting box comprises a transparent peripheral side wall and a scrap collecting cavity formed by surrounding the peripheral side wall so as to improve the visibility, and the pencil sharpener is positioned in the scrap collecting cavity; the upper cover component comprises an upper cover component with a pen inlet hole and a pencil sharpener; the upper cover assembly comprises an upper cover and a bottom plate; a connecting body and a spring are arranged between the upper cover and the bottom plate; the upper end of the pencil sharpener is provided with a connector; the connector is connected with the connecting body and can perform amplitude limiting movement up and down relative to the connecting body; the spring is arranged between the upper cover and the connector, so that the pencil sharpener can elastically float up and down relative to the connecting body; the dynamic participation of the pencil sharpener in the processes of pencil sharpening and pencil sharpener assembly is improved.

Description

Electric pencil sharpener

Technical Field

The invention relates to a pencil sharpener for sharpening pencils, in particular to an electric pencil sharpener.

Background

The pencil sharpener is a learning or office appliance, the core part of which is a pencil sharpening mechanism, comprising a gear ring, a tool rest and a hob, the hob rotates along with the tool rest to finish the cutting of a pencil, and the pencil sharpener is classified by the power driving the pencil sharpening mechanism and can be divided into a hand pencil sharpener and an electric pencil sharpener.

An electric pencil sharpener with the notice number of CN 206703798U; CN 201333883Y;

the electric pencil sharpener with publication number CN210047247U discloses a main body, a scrap cover, a bottom cover, a knife rest, a motor and a transmission mechanism, wherein the motor drives the knife rest to rotate through the transmission mechanism.

CN203888492U electric pencil sharpener, which discloses a shell, a sharpening cutter, a motor and a transmission component, wherein a top cover of the shell is provided with a pencil feeding hole, and the inner side of the top cover is connected with a rotatable sharpening cutter.

Disclosure of Invention

The invention aims to provide an electric pencil sharpener.

The technical scheme adopted by the invention for solving the technical problems is as follows: the electric pencil sharpener is characterized by comprising an upper cover component provided with a floating pencil sharpener, a scrap collecting box with an opening at the upper part and a base provided with a driving component;

the driving assembly drives the pencil sharpener to rotate, and the upper cover assembly covers the scrap collecting box to close the upper opening;

the scrap collecting box comprises a transparent peripheral side wall and a scrap collecting cavity surrounded by the peripheral side wall, and the pencil sharpener is positioned in the scrap collecting cavity;

the upper cover assembly comprises an upper cover assembly with a pen inlet hole and a pencil sharpener; the upper cover component comprises an upper cover and a bottom plate; a connecting body and a spring are arranged between the upper cover and the bottom plate;

the upper end of the pencil sharpener is provided with a connector;

the connector is connected with the connecting body and can perform amplitude limiting movement up and down relative to the connecting body;

the spring is arranged between the upper cover and the connector, so that the pencil sharpener can elastically float up and down relative to the connecting body.

The further preferable technical scheme of the invention is as follows: the connecting body comprises a peripheral side wall and a limiting bottom wall provided with a through hole, and the connector comprises a cylinder and a connecting lug arranged on the cylinder;

the restriction diapire on be equipped with the breach that supplies the engaging lug to pass, the cylinder upwards penetrate the through-hole, and rotate the certain angle of connector so that the engaging lug is located the inboard of restriction diapire.

The further preferable technical scheme of the invention is as follows: the connecting body is internally provided with an annular body, the spring is arranged between the annular body and the upper cover, and a movable gap for the connector of the pencil sharpener to float up and down is formed between the annular body and the limiting bottom wall.

The further preferable technical scheme of the invention is as follows: the annular body is provided with an inner peripheral wall and an outer peripheral wall, the inner peripheral wall forms a pen inlet through hole with the caliber consistent with that of the pen inlet hole,

the further preferable technical scheme of the invention is as follows: the upper cover comprises a top wall and a side wall, a guide wall surrounding the pen inlet hole is arranged on the inner side of the top wall, and the spring is sleeved outside the guide wall and the inner peripheral wall.

The further preferable technical scheme of the invention is as follows: the cylinder is provided with a pressing plate, and the pressing plate is positioned below the limiting bottom wall;

the upper end of the peripheral side wall of the connecting body is provided with a first gear structure, and the inner surface of the top wall is provided with a second gear structure; when the spring is released, the first gear structure and the second gear structure are separated, and the connecting body can rotate along with the pencil sharpener;

the pencil sharpener has the advantages that an acting force in the direction of the top wall is applied to the pencil sharpener, the bottom wall and the cylinder are limited to move in the direction of the top wall, the first gear structure is meshed with the second gear structure, and the connecting lug of the pencil sharpener can rotate relative to the connecting body.

The further preferable technical scheme of the invention is as follows: the inner side of the limiting bottom wall is provided with positioning points, and the positioning points are used for positioning the connecting lugs.

The further preferable technical scheme of the invention is as follows: the bottom plate is provided with a first step, and correspondingly, the connecting body is also provided with a second step corresponding to the first step.

The further preferable technical scheme of the invention is as follows: the upper cover is connected with the bottom plate through screws.

The further preferable technical scheme of the invention is as follows: the pencil sharpener is positioned in the middle of the scrap collecting cavity.

Compared with the prior art, the pencil sharpener has the advantages that the scrap collecting cavity of the electric pencil sharpener is surrounded by the transparent peripheral side wall, and the transparent peripheral side wall improves the visibility of the pencil sharpener in pencil sharpening; in addition, a connecting body and a spring are arranged between the upper cover and the bottom plate of the cover component, a connector at the upper end of the pencil sharpener is connected with the connecting body, and the connector can move relative to the upper limit amplitude and the lower limit amplitude of the upper cover; furthermore, the spring is propped between the upper cover and the connecting head, so that the pencil sharpener can elastically float up and down relative to the upper cover, and the dynamic participation of the pencil sharpener in the processes of pencil sharpening and pencil sharpener assembling is improved.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a schematic view of the overall structure of an electric pencil sharpener;

FIG. 2 is a side sectional view of the electric pencil sharpener;

FIG. 3 is a first schematic view of the internal structure of the electric pencil sharpener;

FIG. 4 is a schematic view of the internal structure of the electric pencil sharpener;

FIG. 5 is a third schematic view of the internal structure of the electric pencil sharpener;

FIG. 6 is a side sectional view of the electric pencil sharpener;

FIG. 7 is an exploded view of the overall structure of the electric pencil sharpener;

FIG. 8 is a schematic view of the upper cover assembly and the pencil sharpener;

FIG. 9 is an exploded view of the upper cover assembly and the sharpener;

FIG. 10 is a schematic view of the sharpener, the coupling body and the annular body;

FIG. 11 is a first side sectional view of the sharpener and the top cover assembly;

FIG. 12 is a second side sectional view of the sharpener and the upper cover assembly;

FIG. 13 is an enlarged view of a portion of the structure of FIG. 11 at A;

fig. 14 is an enlarged view of a portion of the structure at B in fig. 12.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

As shown in fig. 1 to 5 and 8, the electric pencil sharpener 100 includes an upper cover assembly 010, a chip collecting box 30 having an upper opening 33, and a base 50 to which a driving assembly 40 is attached.

Wherein, the driving assembly 40 is used for driving the pencil sharpener 20 to rotate so as to sharpen the pencil, and the upper cover 10 is covered on the dust collecting box 30 so as to close the upper opening 33. When the chip collecting box 30 needs to be dumped, the upper cover 10 is opened to dump the pencil chips in the chip collecting box 30.

The embodiment first describes the upper cover assembly 010 in detail, specifically: as shown in fig. 7 to 12, the upper cover assembly provided with the floating sharpener includes the upper cover assembly provided with the pencil feeding hole k1 and the sharpener 20. The upper cover assembly 010 includes an upper cover 10 and a bottom plate 11.

A connecting body 12 and a spring s are arranged between the upper cover 10 and the bottom plate 11; the upper end of the pencil sharpener 20 is provided with a connector 20v; the connector 20v is connected to the coupling body 12, and the connector 20v can perform upper and lower amplitude limiting movement relative to the coupling body 12; the spring s is supported between the upper cover 10 and the connection head 20v so that the sharpener 20 can elastically float up and down relative to the coupling body 12. It should be further noted that, in the present embodiment, an annular body c is installed between the upper cover 10 and the connecting head 20v, and the spring s is pressed between the inner wall of the upper cover 10 and the annular body c. At this time, when the sharpener 20 is rotated, the ring body c is not rotated, so that the spring s is prevented from being unnecessarily elastically deformed in the left-right rotation direction. Specifically, the upper cover 10 includes a top wall 10a and a side wall 10b, a guide wall 10c surrounding the pen inlet k1 is provided on the inner side of the top wall 10a, and the spring s is sleeved outside the guide wall 10c and the inner peripheral wall c 1.

As shown in fig. 9 and 10, the coupling body 12 connected to the sharpener 20 includes a peripheral side wall 12a and a restricting bottom wall 12b provided with a through hole 12 c. The connector 20v comprises a cylinder v1 and a connecting lug v2 arranged on the cylinder v 1; the limiting bottom wall 12b is provided with a notch b2 for the connecting ear v2 to pass through. When the connector is mounted, the cylinder v1 is inserted into the through hole and the connector 20v is rotated at an angle such that the engaging lug v2 is located inside the restricting bottom wall 12b. The limiting bottom wall 12b includes a convex buckle protruding outwards, and the convex buckle has a certain inclination angle, so that the connecting lug v2 and the convex buckle move relatively while extruding mutually, and finally the connecting lug v2 is smoothly clamped and embedded to the inner side of the convex buckle. Preferably, the inner side of the bottom limiting wall 12b is provided with a positioning point j for positioning the engaging lug v2.

As shown in fig. 10, an annular body c is disposed in the coupling body 12, the spring s is disposed between the annular body c and the upper cover 10, a movable gap f is formed between the annular body c and the limiting bottom wall 12b, and the connecting head 20v of the pencil sharpener 20 floats up and down between the movable gap f.

More specifically, as shown in fig. 9 and 10, the annular body c is provided with an inner peripheral wall c1 and an outer peripheral wall c2, and the inner peripheral wall c1 forms a pen inlet through hole k3 having a diameter corresponding to the diameter of the pen inlet hole k 1. So that the pencil sequentially passes through the pencil feeding hole k1 and the pencil feeding through hole k3 and then enters the pencil inserting hole k 2.

The pressing plate v3 is arranged on the cylinder v1 of the connector 20v of the pencil sharpener 20, and the pressing plate v3 is positioned below the limiting bottom wall 12b. The pressing plate v3 covers the limiting bottom wall 12b to improve the beauty and cleanliness of the assembled pencil sharpener 20 and the coupling body 12. Further improving the integrity between the assembled components.

As for the connection relationship between the coupling body 12 and the upper cover 10, as shown in fig. 11 to 14, the upper end of the peripheral side wall 12a of the coupling body 12 is provided with a first gear structure g1, and the inner surface of the top wall 10a is provided with a second gear structure g2.

When the spring s is released, the first gear structure g1 and the second gear structure g2 are disengaged, and the coupling body 12 can rotate together with the sharpener 20 when the pencil is cut.

When the pencil sharpener 20 needs to be replaced or maintained, the upper cover 10 is removed first, and the pencil sharpener 20 is fixed inside the upper cover 10. At this time, the user applies a force to the sharpener 20 in the direction of the top wall 10a, and the bottom plate 11 and the cylinder v1 move in the direction of the top wall 10a, so that the first gear structure g1 and the second gear structure g2 are engaged, i.e. the coupling body 12 cannot rotate left and right relative to the top wall 10 a. At this time, the user simultaneously applies a right-and-left rotating force to the sharpener 20 so that the engaging lug v2 of the sharpener 20 can rotate relative to the coupling body 12, the engaging lug v2 can be disengaged from the restricting bottom wall 12b, and the removal of the sharpener 20 is completed.

As shown in fig. 9 and 7, the bottom plate 11 is provided with a first step d1, and correspondingly, the coupling body 12 is also provided with a second step d2 corresponding to the first step d 1. After installation, the second step d2 is arranged on the first step d1 in a fitting manner, so that the connection relationship between the connecting body 12 and the bottom plate 11 is more coherent and attractive. In actual installation, the upper cover 10 is connected with the bottom plate 11 through screws.

The invention aims to explain that a connecting body 12 and a spring s are arranged between an upper cover 10 and a bottom plate 11 of an upper cover assembly 010, a connector 20v at the upper end of a pencil sharpener 20 is connected with the connecting body 12, and the connector 20v can limit the amplitude up and down relative to the upper cover 10; further, the spring s is supported between the upper cover 10 and the connecting head 20v, so that the sharpener 20 can elastically float up and down relative to the upper cover 10, thereby improving the dynamic participation of the sharpener 20 in the processes of sharpening the pencil and assembling the pencil sharpener.

In addition, it should be described in detail that the driving assembly 40 in the base 50 is that the driving assembly 40 includes a motor 41, a worm 42, a worm wheel 43 and a plurality of sets of reduction gears a; the sharpener 20 is rotatably assembled inside the upper cover 10; the last group of reduction gears a is provided with a rotating shaft a6 which extends longitudinally and can float up and down.

In the case of the rotatable sharpener 20, the sharpener 20 is driven by the driving assembly 40 to rotate, so as to sharpen the pencil. A worm 43 on the driving assembly 40 is connected with an output shaft a5 of the motor 41, and a worm wheel 42 is matched with the worm 43; therefore, a driving relationship of mutual cooperation is formed, the motor 41 is in a lying posture, on one hand, noise and vibration generated by the work of the motor 41 can be reduced, on the other hand, the layout of the driving assembly 40 can be optimized, and therefore the space of the base 50 occupied by the whole driving assembly 40 is reduced.

In addition, as shown in fig. 9, the reduction gear a in the present embodiment includes a rotational shaft a6, and the rotational shaft a6 is limitedly movable in the axial direction; after the motor 41 is started, the worm 43 and the worm wheel 42 are engaged with each other to further drive the reduction gear a. Finally, the rotating shaft a6 rotates the sharpener 20 to cut the pencil.

For the base 50, a longitudinal positioning slot 51 is provided in the base 50, and the rotation axis a6 is provided in the longitudinal positioning slot 51. A battery compartment 52 is disposed in the base 50, and the battery compartment 52 is used for accommodating a battery assembly, which may be a rechargeable battery.

A micro switch 60 connected to the motor 41 is provided at the bottom of the longitudinal positioning groove 52, and the rotating shaft a6 touches the micro switch 60 when moving downward. Activation of the microswitch 60 causes the motor 41 to start, which in turn drives the drive assembly 40 further.

For the chip collecting box 30, the chip collecting box 30 includes a transparent peripheral sidewall 31 and a chip collecting cavity 32 surrounded by the peripheral sidewall 31, and the pencil sharpener 20 is located in the chip collecting cavity 30. The chip collecting box 30 having the transparent peripheral wall 31 can improve visibility inside the sharpener. When the user cuts the pencil, the user can more intuitively observe the condition that the pencil is cut by the pencil sharpener 20.

The bottom of the dust collecting cavity 30 is provided with a bottom plate 34, and the upper end of the rotating shaft a6 extends out of the bottom plate 34 to form a rotating salient point t matched with the connecting groove 22 of the pencil sharpener 20. The rotation protrusion t is connected to a connection groove 22 at the lower end of the sharpener 20. So that when the rotation shaft a6 rotates, the sharpener 20 is driven to rotate, and then cutting work is performed.

The sharpener 20 of this embodiment is vertically movable with respect to the upper cap 10. In actual use, a user applies a certain external force to insert a pencil into the sharpener 20, so as to drive the sharpener 20 to move downward for a certain distance, and then further drive the rotation shaft a6 connected with the sharpener 20 to move downward, and the rotation shaft a6 touches the micro switch 60 when moving downward. Activation of the microswitch 60 causes the motor 41 to be activated, which in turn drives the drive assembly 40 further.

After the pencil is cut, the user takes out the pencil upward, and the external force applied to the sharpener 20 is removed, so that the rotation axis a6 floats, the micro switch 60 returns to the initial state, and the motor 41 stops operating. Therefore, the on-off switching of the electric pencil sharpener 100 in the process of sharpening the pencil is more flexible and intelligent.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention.

The above detailed description of the upper cover assembly with the floating pencil sharpener and the electric pencil sharpener provided by the present invention has been provided, and the principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to assist the present invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The electric pencil sharpener is characterized by comprising an upper cover component provided with a floating pencil sharpener, a scrap collecting box with an opening at the upper part and a base provided with a driving component;

the driving component drives the pencil sharpener to rotate, and the upper cover component covers the scrap collecting box to seal the upper opening;

the upper cover assembly comprises an upper cover mechanism with a pen inlet hole and a pencil sharpener; the upper cover mechanism comprises an upper cover and a bottom plate; a connecting body and a spring are arranged between the upper cover and the bottom plate, and the upper cover comprises a top wall and a side wall;

the upper end of the pencil sharpener is provided with a connector;

the connector is connected with the connecting body and can limit the amplitude up and down relative to the connecting body;

the connecting body is internally provided with an annular body, and the spring is arranged between the annular body and the upper cover so that the pencil sharpener can elastically float up and down relative to the connecting body;

the connecting body comprises a peripheral side wall and a limiting bottom wall provided with a through hole, and the connector comprises a cylinder and a connecting lug arranged on the cylinder;

the limiting bottom wall is provided with a notch for the connection lug to pass through, the cylinder upwards penetrates into the through hole, the connector is rotated for a certain angle to enable the connection lug to be positioned on the inner side of the limiting bottom wall, the limiting bottom wall comprises a convex buckle which protrudes outwards, the convex buckle has a certain inclination angle, so that the connection lug and the convex buckle move relatively and extrude with each other at one side, and finally the connection lug is smoothly clamped and embedded to the inner side of the convex buckle;

the cylinder is provided with a pressing plate, and the pressing plate is positioned below the limiting bottom wall;

the upper end of the peripheral side wall of the connecting body is provided with a first gear structure, and the inner surface of the top wall is provided with a second gear structure;

when the spring is released, the first gear structure and the second gear structure are separated, and the connecting body can rotate along with the pencil sharpener;

2. The electric pencil sharpener as claimed in claim 1, wherein a clearance for the connection head of the pencil sharpener to float up and down is formed between the ring body and the bottom limiting wall.

3. The electric sharpener of claim 2 wherein the annular body defines an inner peripheral wall and an outer peripheral wall, said inner peripheral wall defining a pencil feed through hole of a diameter corresponding to the diameter of the pencil feed hole.

4. The electric pencil sharpener as claimed in claim 3, wherein said top wall has a guide wall surrounding said pencil feeding hole on an inner side thereof, and said spring is fitted around said guide wall and said inner peripheral wall.

5. The electric pencil sharpener of claim 1 wherein the inner side of the bottom limiting wall is provided with locating points for locating the engaging lugs.

6. The electric pencil sharpener of claim 1, wherein said base plate is provided with a first step, and correspondingly, said coupling body is also provided with a second step corresponding to the first step.

7. The electric pencil sharpener of claim 1 wherein said top cover is screwed to said base plate.

8. The electric pencil sharpener of claim 1 wherein said sharpener is located in the middle of said chip collection chamber.