CN113844201A - Electric pencil sharpener with thickness adjusting function - Google Patents
Electric pencil sharpener with thickness adjusting function Download PDFInfo
- Publication number
- CN113844201A CN113844201A CN202111214101.5A CN202111214101A CN113844201A CN 113844201 A CN113844201 A CN 113844201A CN 202111214101 A CN202111214101 A CN 202111214101A CN 113844201 A CN113844201 A CN 113844201A
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- Prior art keywords
- pencil sharpener
- pencil
- sharpener
- push rod
- movable push
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/08—Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/02—Sharpeners for pencils or leads with gearing
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Abstract
The invention discloses an electric pencil sharpener with thickness adjusting function, which comprises a shell, a pencil sharpener, a motor driving assembly and a pencil point thickness adjusting mechanism, wherein the top wall of the shell is provided with a pencil inlet hole; the motor driving component is positioned at the lower part of the pencil sharpener; the motor driving component drives the pencil sharpener to rotate; the pen point thickness adjusting mechanism comprises a movable push rod capable of moving vertically, a rotatable adjusting rod and a reversing structure; when the pencil sharpener is used, a user rotates the rotatable adjusting rod, the reversing structure is connected with the adjusting rod, the rotating driving action of the adjusting rod is converted into vertical driving action, the vertical driving action is transmitted to the movable push rod, the movable push rod is further vertically moved, the moving direction of the movable push rod is consistent with the direction of a pencil feeding channel of the pencil sharpener, the inserting depth of a pencil point to be sharpened is limited by the upper end of the movable push rod, and the thickness of the pencil point can be adjusted.
Description
Technical Field
The invention relates to a pencil sharpener for sharpening a pencil, in particular to an electric pencil sharpener capable of adjusting the thickness of a pencil point.
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; an electric pencil sharpener of CN 201333883Y;
an 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.
The above-mentioned document discloses the working principle of an electric pencil sharpener.
A thickness adjusting mechanism disclosed in publication No. CN 111332053A; the CN105922797A pencil lead point thickness adjusting mechanism discloses a pencil thickness gear adjusting mechanism of a manual pencil sharpener.
The existing electric pencil sharpener is also provided with a pencil point thickness adjusting mechanism, but has the problems of complex structure, inconvenient operation and the like.
Disclosure of Invention
In view of the defects of complex structure, inconvenient operation and the like of the conventional electric pencil sharpener, the invention provides the electric pencil sharpener which is simple and convenient to operate, has a simplified structure and can adjust the thickness of a pencil point.
The technical scheme adopted by the invention for solving the technical problems is as follows: the electric pencil sharpener with the thickness adjusting function is characterized by comprising a shell with a pencil feeding hole on the top wall, a pencil sharpener, a motor driving assembly and a pencil point thickness adjusting mechanism, wherein the pencil sharpener is vertically arranged in the shell;
the pencil sharpener is detachably assembled on the top cover of the shell, and a floating structure is arranged between the pencil sharpener and the top cover;
a return spring is arranged between the connector and the top cover of the pencil sharpener, so that the pencil sharpener can elastically float up and down under the action of the return spring;
the motor driving assembly is positioned at the lower part of the pencil sharpener; the motor driving component drives the pencil sharpener to rotate;
the pen point thickness adjusting mechanism comprises a movable push rod capable of moving vertically, a rotatable adjusting rod and a reversing structure;
the moving direction of the movable push rod is consistent with the direction of the pencil feeding channel of the pencil sharpener;
the reversing structure converts the rotating motion of the adjusting rod into the vertical motion of the movable push rod.
The further preferable technical scheme of the invention is as follows: the outer end of the adjusting rod is provided with a knob positioned outside the side wall of the shell.
The further preferable technical scheme of the invention is as follows: the outer end of the adjusting rod is connected with the inner side of the knob, and the clamp spring arranged in the shell limits the knob to be separated from the shell.
The further preferable technical scheme of the invention is as follows: the reversing structure comprises a reversing block with an inclined surface and a gear at the inner end of the adjusting rod, and a rack meshed with the gear is arranged on the reversing block;
the lower end of the movable push rod is abutted against the inclined surface;
when the adjusting rod rotates, the horizontal movement of the reversing block is realized through the meshing of the gear and the rack; thereby adjusting the horizontal height of the movable push rod.
The further preferable technical scheme of the invention is as follows: a movable anti-slip block is arranged in the pencil sharpener and used for limiting the extending range of a pencil point in the pencil sharpener;
the upper end of the movable push rod props against the sliding-down of the anti-slip block.
The further preferable technical scheme of the invention is as follows: the shell comprises a cylinder body with a chip collecting cavity, the top cover is detachably covered above the cylinder body, and the pencil sharpener is positioned in the center of the chip collecting cavity;
the shell further comprises a base located at the lower portion of the cylindrical body, and the electric driving assembly is arranged in the base.
The further preferable technical scheme of the invention is as follows: the bottom of the chip collecting cavity is provided with a bottom plate, the bottom plate is provided with a boss, and the boss is provided with a jack for inserting the lower end of the pencil sharpener.
The further preferable technical scheme of the invention is as follows: an annular body is arranged between the top cover and the connector, and comprises an inner peripheral wall and an outer peripheral wall; the return spring is pressed between the inner wall of the top cover and the annular body.
The further preferable technical scheme of the invention is as follows: the electric pencil sharpener with the thickness adjusting function further comprises a connecting body, the connector of the pencil sharpener is detachably connected with the connecting body through a buckle structure, and the connector can limit the amplitude up and down relative to the connecting body.
The further preferable technical scheme of the invention is as follows: 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 reset spring is released, the first gear structure and the second gear structure are separated, and when a pencil is cut, the connecting body can rotate along with the pencil sharpener.
Compared with the prior art, the electric pencil sharpener has the advantages that the electric pencil sharpener comprises the rotatable adjusting rod, the reversing structure and the movable push rod, when the electric pencil sharpener is used, a user rotates the rotatable adjusting rod, the reversing structure is connected with the adjusting rod to convert the rotation driving action of the adjusting rod into vertical driving action and transmit the vertical driving action to the movable push rod, so that the movable push rod is further moved vertically, the moving direction of the movable push rod is kept consistent with the direction of a pencil feeding channel of the pencil sharpener, the insertion depth of the pencil point to be sharpened at the upper end of the movable push rod is limited, and the thickness of the pencil point of the pencil can be adjusted; and a return spring is arranged between the pencil sharpener and the top cover, so that the pencil sharpener can elastically float up and down under the action of the return spring, and the mounting structure and the using effect of the pencil sharpener are further optimized.
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 of the present invention;
FIG. 2 is a schematic view of the internal structure of the electric pencil sharpener of the present invention;
FIG. 3 is an exploded view of the bottom of the electric pencil sharpener of the present invention;
FIG. 4 is an exploded view of the upper portion of the electric pencil sharpener of the present invention;
FIG. 5 is a first schematic view showing the structure of a pen point thickness adjusting mechanism and a sharpener;
FIG. 6 is a second schematic view showing the structure of the pen point thickness adjusting mechanism and the sharpener;
FIG. 7 is a first side sectional view of the pen tip thickness adjusting mechanism and the sharpener;
FIG. 8 is a second side sectional view of the pen point thickness adjusting mechanism and the sharpener;
FIG. 9 is a side cross-sectional view of the electric pencil sharpener of the present invention;
FIG. 10 is a first exploded view of the floating structure of the present invention;
FIG. 11 is a second exploded view of the floating structure of the present invention;
FIG. 12 is a side sectional view of the pencil sharpener and cap assembly;
FIG. 13 is a second side sectional view of the pencil sharpener and cap assembly;
FIG. 14 is an enlarged view of a portion of the invention at A in FIG. 12;
FIG. 15 is an enlarged view of a portion of the invention at B in FIG. 13;
fig. 16 is a schematic structural diagram of a knob inside a base of the electric pencil sharpener.
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 and 2, the electric pencil sharpener 100 comprises a housing 10 having a pencil inlet hole 12 on the top wall, a pencil sharpener 30 vertically disposed in the housing 10, a motor drive assembly 20, and a nib thickness adjusting mechanism 40; the motor driving assembly 20 is positioned at the lower part of the pencil sharpener 30; the motor drive assembly 20 drives the sharpener 30 to rotate.
As shown in fig. 5 to 8, the pen tip thickness adjusting mechanism 40 includes a movable push rod 41 that can move vertically, an adjusting rod 42 that can rotate, and a reversing structure 50; the moving direction of the movable push rod 41 is consistent with the direction of the pencil feeding channel 32 of the pencil sharpener 30; the reversing structure 50 converts the rotational movement of the adjustment lever 42 into the vertical movement of the movable push rod 41.
The pencil sharpener 30 has the advantages that when the pencil sharpener is used, a user rotates the rotatable adjusting rod 42, the reversing structure 50 is connected with the adjusting rod to convert the rotating driving action of the rotatable adjusting rod 42 into a vertical driving action and transmit the vertical driving action to the movable push rod 41, the movable push rod 41 further moves vertically, the moving direction of the movable push rod 41 is consistent with the direction of the pencil feeding channel 32 of the pencil sharpener 30, the insertion depth of the pencil point to be sharpened at the upper end of the movable push rod 41 is limited, and the thickness of the pencil point is adjusted.
Preferably, in this embodiment, the outer end of the adjustment lever 42 is provided with a knob 4a located outside the sidewall of the housing 10. In actual installation, as shown in fig. 16, the outer end of the adjustment lever 42 is connected to the inside of the knob 4a, and the snap spring f provided in the housing 10 restricts the knob 4a from being detached from the housing 10. The peripheral side wall of the knob 4a is provided with a thread structure, the outer end wall surface of the knob 4a is provided with a pointing sign, and when the knob 4a is rotated, the pointing sign points to the thickest gear or the thinnest gear of the sign on the outer wall surface of the base 14.
As shown in fig. 5 to 8, the reversing structure 50 includes a reversing block 52 having an inclined surface 53 and a gear 51 at the inner end of the adjusting rod 42, and the reversing block 52 is provided with a rack 55 engaged with the gear 51; the lower end of the movable push rod 41 is abutted against the inclined surface 53; when the adjusting rod 42 rotates, the horizontal movement of the reversing block 52 is realized through the meshing of the gear 51 and the rack 55; thereby adjusting the horizontal height of the movable push rod 41.
As shown in fig. 4, preferably, as a limit for the nib to be cut, a movable sliding block 60 is additionally provided in the sharpener 30, and the sliding block 60 limits the extent of the nib inserted into the sharpener 30; the upper end of the movable push rod 41 is pressed against the sliding block 60 to slide downwards. The specific shape of the anti-slip block 60 is matched with the channel structure of the pencil feeding channel 32, so that the anti-slip block 60 can comprehensively support the pencil point of the pencil to be cut, and the problem that the thickness of the pencil point cannot be smoothly adjusted due to the fact that the pencil point is staggered with the bearing surface at the upper end of the anti-slip block 60 is avoided.
As shown in fig. 4, the sharpener 30 is detachably mounted on the top cover 11 of the housing 10, and a floating structure 70 is provided between the sharpener 30 and the top wall 11.
Preferably, a return spring 70s is provided between the sharpener 30 and the top wall 11, so that the sharpener 30 can elastically float up and down by the action of the return spring 30.
In practical use, a user applies a certain external force to insert a pencil into the sharpener 30 to drive the sharpener 30 to move downward for a certain distance, so that the touch component in the sharpener touches the micro switch. Activation of the microswitch causes the motor 21 to start, which in turn drives the drive assembly 22 further.
After the pencil is cut, the user takes out the pencil upwards, the external force applied on the pencil sharpener 30 is removed, the pencil sharpener 30 moves upwards for a certain distance under the action of the floating structure 70, the touch part is lifted, the micro switch returns to the initial state, and the motor stops running. Therefore, the on-off switching of the electric pencil sharpener 100 in the process of sharpening the pencil is more flexible and intelligent.
As shown in fig. 9 to fig. 15, what needs to be further specified for the floating structure 70 is that it further includes a coupling body 012, the connector 31 of the pencil sharpener 30 is detachably connected with the coupling body 012 through a snap structure, and the connector 31 can perform an upper and lower limiting movement relative to the coupling body 012; the return spring 70s is supported between the top cover 11 and the connection head 31 so that the sharpener 20 can elastically float up and down with respect to the coupling body 012.
It should be further noted that, in the present embodiment, an annular body c is installed between the top cover 11 and the connecting head 31, and the annular body c includes an inner circumferential wall c1 and an outer circumferential wall c 2; the return spring 70s is pressed between the inner wall of the top cover 11 and the annular body c. At this time, when the sharpener 30 is rotated, the ring body c is not rotated, so that the return spring 70s is prevented from being unnecessarily elastically deformed in the left-right rotation direction. Specifically, the top cover 11 includes a top wall 11a and a side wall 11b, a guide wall 11c surrounding the pen inlet hole 12 is provided on an inner side of the top wall 11a, and the return spring 70s is fitted over the guide wall 11c and the inner peripheral wall c 1.
Regarding the connection relationship between the coupling body 012 and the top cover 11, the upper end of the peripheral side wall 12a of the coupling body 012 is provided with a first gear structure g1, and the inner surface of the top wall 11a is provided with a second gear structure g 2.
When the return spring 70s is released, the first gear structure g1 and the second gear structure g2 are disengaged, and the coupling body 012 can rotate together with the sharpener 30 when the pencil is sharpened.
When the pencil sharpener 30 needs to be replaced or maintained, the top cover 11 is taken down first, and the pencil sharpener 30 is fixed on the inner side of the top cover 11. Then, the user applies a force to the sharpener 30 in the direction of the top wall 11a, and the connecting head 31 moves in the direction of the top wall 11a, so that the first gear structure g1 and the second gear structure g2 are engaged, i.e. the coupling body 012 cannot rotate left and right relative to the top wall 11 a. At this time, the user simultaneously applies a force of rotating the sharpener 30 in the left-right direction to rotate the connector 31 of the sharpener 30 in the left-right direction with respect to the coupling body 012, and the snap-fit structures between the connector 31 and the coupling body 012 are disengaged from each other, thereby completing the removal of the sharpener 30.
The snap structure between the connection head 31 and the coupling body 012 comprises a snap ear v1 extending outwards on the connection head 31 and a snap piece v2 on the coupling body 012.
The shell 10 comprises a cylindrical body 13 with a chip collecting cavity 12, a top cover 11 is detachably covered on the cylindrical body 13, and the pencil sharpener 30 is positioned in the center of the chip collecting cavity 12; the housing 10 further comprises a base 14 located at the lower part of the cylindrical body 13, and the electric drive assembly 20 is arranged in the base 14. The motorized drive assembly 20 includes a motor 21 and a drive assembly 22. The overall housing profile of the electric pencil sharpener 100 of the present invention includes, but is not limited to, a cylindrical shape.
As shown in fig. 2 and 4, a bottom plate 15 is disposed at the bottom of the chip collecting cavity 12, a boss 16 is disposed on the bottom plate 15, and an insertion hole 18 for inserting the lower end of the pencil sharpener 30 is disposed on the boss 16.
The present invention is directed to a description, an electric pencil sharpener 100 includes a pencil point thickness adjusting mechanism 40, the pencil point thickness adjusting mechanism 40 includes a rotatable adjusting rod 42, a reversing mechanism 50 and a movable push rod 41, when in use, a user rotates the rotatable adjusting rod 42, the reversing mechanism 50 is connected with the adjusting rod 42 to convert the rotation driving action of the adjusting rod 42 into a vertical driving action, and transmits the vertical driving action to the movable push rod 41, so as to further vertically move the movable push rod 41, and the moving direction of the movable push rod 41 is consistent with the direction of a pencil feeding channel 32 of a pencil sharpener 30, so that the upper end of the movable push rod 41 limits the insertion depth of the pencil point to be sharpened, thereby adjusting the thickness of the pencil point.
Preferably, as the limit of the nib to be cut, the upper end of the movable push rod 41 is arranged with a slip stopper 60, the slip stopper 60 is used to limit the extending range of the nib in the sharpener 30; the upper end of the movable push rod 41 is pressed against the sliding block 60 to slide downwards. The anti-slip block 60 limits the extending range of the pen point in the pencil sharpener 30, and the specific shape of the anti-slip block 60 is matched with the channel structure of the pencil feeding channel 32, so as to avoid the problem that the thickness of the pen point cannot be smoothly adjusted due to the fact that the pen point is staggered with the bearing surface at the upper end of the anti-slip block 60.
The present invention provides an electric pencil sharpener with a nib thickness adjusting mechanism, which is described in detail above, and the principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the examples is only used to help 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 (10)
1. The electric pencil sharpener with the thickness adjusting function is characterized by comprising a shell with a pencil feeding hole on the top wall, a pencil sharpener, a motor driving assembly and a pencil point thickness adjusting mechanism, wherein the pencil sharpener is vertically arranged in the shell;
the pencil sharpener is detachably assembled on the top cover of the shell, and a floating structure is arranged between the pencil sharpener and the top cover;
a return spring is arranged between the connector and the top cover of the pencil sharpener, so that the pencil sharpener can elastically float up and down under the action of the return spring;
the motor driving assembly is positioned at the lower part of the pencil sharpener; the motor driving component drives the pencil sharpener to rotate;
the pen point thickness adjusting mechanism comprises a movable push rod capable of moving vertically, a rotatable adjusting rod and a reversing structure;
the moving direction of the movable push rod is consistent with the direction of the pencil feeding channel of the pencil sharpener;
the reversing structure converts the rotating motion of the adjusting rod into the vertical motion of the movable push rod.
2. An electric pencil sharpener with thickness adjustment function as claimed in claim 1, wherein the outer end of the adjusting rod is provided with a knob located outside the side wall of the housing.
3. An electric pencil sharpener with thickness adjustment function as claimed in claim 2, wherein the outer end of the adjusting rod is connected to the inner side of the knob, and a snap spring provided in the housing limits the knob from being detached from the housing.
4. An electric pencil sharpener with thickness adjusting function as claimed in claim 1, wherein said direction changing structure comprises a direction changing block with an inclined surface and a gear at the inner end of the adjusting rod, said direction changing block is provided with a rack engaged with said gear;
the lower end of the movable push rod is abutted against the inclined surface;
when the adjusting rod rotates, the horizontal movement of the reversing block is realized through the meshing of the gear and the rack; thereby adjusting the horizontal height of the movable push rod.
5. An electric pencil sharpener with thickness adjustment function as defined in claim 1, wherein a movable anti-slip block is provided in said sharpener, said anti-slip block limiting the extent of insertion of the pencil point into the sharpener;
the upper end of the movable push rod props against the sliding-down of the anti-slip block.
6. The thickness-adjusting electric pencil sharpener as claimed in claim 1, wherein said housing includes a cylindrical body having a chip-collecting chamber, said top cover detachably covering said cylindrical body, said pencil sharpener being located at the center of said chip-collecting chamber;
the shell further comprises a base located at the lower portion of the cylindrical body, and the electric driving assembly is arranged in the base.
7. An electric pencil sharpener with thickness adjusting function as claimed in claim 6, wherein a bottom plate is arranged at the bottom of the chip collecting cavity, a boss is arranged on the bottom plate, and a jack for inserting the lower end of the pencil sharpener is arranged on the boss.
8. An electric pencil sharpener with thickness adjustment function as claimed in claim 1, wherein an annular body is installed between the top cover and the connecting head, the annular body comprises an inner peripheral wall and an outer peripheral wall; the return spring is pressed between the inner wall of the top cover and the annular body.
9. An electric pencil sharpener with thickness adjusting function as defined in claim 1, further comprising a coupling body, wherein the connector of the pencil sharpener is detachably connected to the coupling body via a snap structure, and the connector can limit the movement of the upper and lower limits relative to the coupling body.
10. An electric pencil sharpener with thickness adjustment function as defined in claim 9, wherein the upper end of the peripheral side wall of the coupling 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 reset spring is released, the first gear structure and the second gear structure are separated, and when a pencil is cut, the connecting body can rotate along with the pencil sharpener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111214101.5A CN113844201B (en) | 2021-10-19 | 2021-10-19 | Electric pencil sharpener with thickness adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111214101.5A CN113844201B (en) | 2021-10-19 | 2021-10-19 | Electric pencil sharpener with thickness adjusting function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113844201A true CN113844201A (en) | 2021-12-28 |
| CN113844201B CN113844201B (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111214101.5A Active CN113844201B (en) | 2021-10-19 | 2021-10-19 | Electric pencil sharpener with thickness adjusting function |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB908253A (en) * | 1960-07-19 | 1962-10-17 | Minitone Electronics Inc | Floating mounting for pencil sharpener blade |
| CN204659309U (en) * | 2015-05-18 | 2015-09-23 | 娄宗茂 | A kind of transmission mechanism of automatic penknife |
| CN206367326U (en) * | 2016-04-29 | 2017-08-01 | 郭玉英 | Pencil sharpener |
| CN211843884U (en) * | 2020-03-11 | 2020-11-03 | 三木控股集团有限公司 | Electric pencil sharpener |
| CN214215313U (en) * | 2020-12-25 | 2021-09-17 | 义乌市鼎邦文体用品有限公司 | Pencil sharpener mounting structure convenient to replace and electric pencil sharpener |
| CN214396178U (en) * | 2021-02-25 | 2021-10-15 | 刘军 | Electric pencil sharpener |
-
2021
- 2021-10-19 CN CN202111214101.5A patent/CN113844201B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB908253A (en) * | 1960-07-19 | 1962-10-17 | Minitone Electronics Inc | Floating mounting for pencil sharpener blade |
| CN204659309U (en) * | 2015-05-18 | 2015-09-23 | 娄宗茂 | A kind of transmission mechanism of automatic penknife |
| CN206367326U (en) * | 2016-04-29 | 2017-08-01 | 郭玉英 | Pencil sharpener |
| CN211843884U (en) * | 2020-03-11 | 2020-11-03 | 三木控股集团有限公司 | Electric pencil sharpener |
| CN214215313U (en) * | 2020-12-25 | 2021-09-17 | 义乌市鼎邦文体用品有限公司 | Pencil sharpener mounting structure convenient to replace and electric pencil sharpener |
| CN214396178U (en) * | 2021-02-25 | 2021-10-15 | 刘军 | Electric pencil sharpener |
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| Publication number | Publication date |
|---|---|
| CN113844201B (en) | 2022-11-22 |
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