CN212860909U - Pencil sharpener - Google Patents
Pencil sharpener Download PDFInfo
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- CN212860909U CN212860909U CN202021379769.6U CN202021379769U CN212860909U CN 212860909 U CN212860909 U CN 212860909U CN 202021379769 U CN202021379769 U CN 202021379769U CN 212860909 U CN212860909 U CN 212860909U
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Abstract
The utility model provides a pencil sharpener, include: the pencil sharpener comprises a pencil sharpener body, wherein a frustum-shaped pencil sharpening cavity is arranged in the middle of the pencil sharpener body, a pencil lead cylindrical hole is formed in the pencil sharpener body along the direction of the central axis of the frustum-shaped pencil sharpening cavity, the tail end of the frustum-shaped pencil sharpening cavity is communicated with one end of the pencil lead cylindrical hole, the diameter of the pencil lead cylindrical hole is the same as that of a pencil lead, an opening is formed in the outer wall of the frustum-shaped pencil sharpening cavity along the direction of the axis, a blade is installed on the opening, a groove is formed in the upper surface of the pencil sharpener body, and the other end of the pencil lead. As described above, the utility model discloses a pencil sharpener solves and hardly obtains the former state among the prior art, not fish tail, smooth cylindrical pencil lead, and the refill surface has the damage and the fish tail that the size is visible, hardly makes the pencil keep vertical state refill of polishing, is difficult to obtain the problem of the smooth disc of ideal.
Description
Technical Field
The utility model relates to a pencil hardness test technical field especially relates to a pencil sharpener.
Background
The pencil hardness test has higher requirement on pencil leads. Removing approximately 5mm to 6mm of wood from one end of each pencil, and carefully handling to leave an intact, unscratched, smooth cylindrical pencil lead; the bottom surface was ground with 400 mesh sandpaper to a smooth round surface without chipping or chipping of the edges.
The existing pencil sharpening method mainly uses a knife to remove wood on the surface of the pencil, so as to leave an original pencil lead, and then the pencil lead is vertically placed on 400-mesh abrasive paper to be ground, so that the pencil lead is ground into a smooth round surface. However, it is difficult to obtain an intact, undamaged, smooth cylindrical pencil lead with visible surface damage and scratches by means of a knife. In the process of polishing the pen point, the pencil is difficult to polish the pen core in a vertical state without the help of any auxiliary tool, and an ideal smooth round surface is difficult to obtain. The final pencil lead shape is mainly determined by the manual proficiency in the whole operation process, if the manual proficiency meets the background, more pencil leads can be scratched, and the pencil hardness test is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a pencil sharpener for solve among the prior art hardly obtain former state, not fish tail, smooth cylindrical pencil lead, the refill surface can have the size visible damage and fish tail, hardly make the pencil keep vertical state the refill of polishing, is difficult to obtain the problem of the smooth disc of ideal.
To achieve the above and other related objects, the present invention provides a pencil sharpener, comprising: the pencil sharpener comprises a pencil sharpener body, wherein a frustum-shaped sharpening cavity is arranged in the middle of the pencil sharpener body, a pencil inserting hole is formed in the side face of the pencil sharpener body, the pencil inserting hole is communicated with the frustum-shaped sharpening cavity, a pencil lead cylindrical hole is formed in the pencil sharpener body along the central axis direction of the frustum-shaped sharpening cavity, the tail end of the frustum-shaped sharpening cavity is communicated with one end of the pencil lead cylindrical hole, the tail end of the frustum-shaped sharpening cavity is as large as the diameter of the pencil lead cylindrical hole, the diameter of the pencil lead cylindrical hole is as large as the diameter of a pencil lead, an opening is formed in the outer wall of the frustum-shaped sharpening cavity along the axis direction, a blade is installed on the opening, a groove is formed in the upper surface of the pencil sharpener body, the other end of the pencil lead cylindrical hole is communicated with the groove, and 400-purpose abrasive paper is placed.
As a preferable technical scheme, the blade is fixed to the outside of the frustum-shaped pencil sharpening cavity by screwing a screw.
As a preferable technical scheme, the width of the groove is 1mm-2 mm.
As a preferred technical scheme, the length of the cylindrical hole of the pen core is 5 mm.
As above, the utility model relates to a pencil sharpener, the terminal diameter size of cutting the chamber with frustum shape sets to the same with refill diameter size, continue rotatory pencil after the pencil is cut out wood promptly, the refill can not further sharpened yet, the refill remains the cylinder shape, continue rotatory pencil, the refill gets into in the cylinder hole, gradually to groove and 400 mesh abrasive paper contacts, continue rotatory pencil, make the refill polish on abrasive paper, make the nib polish into smooth circular, for the pencil hardness test, and reasonable in design is suitable for production and popularization and application.
Drawings
Fig. 1 is a schematic structural view of a pencil sharpener disclosed in an embodiment of the present invention;
fig. 2 is a cross-sectional view of a pencil sharpener disclosed in an embodiment of the present invention;
wherein the reference numerals are specified as follows: 1. a pencil sharpener body; 2. a blade; 3. screwing down the screw; 4. a pencil insertion opening; 5. a cylindrical hole of the pen core; 6. and (4) a groove. 7. A frustum-shaped pencil sharpening cavity.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1-2. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a pencil sharpener, including: the pencil sharpener comprises a pencil sharpener body 1, a frustum-shaped pencil sharpening cavity 7 is arranged in the middle of the pencil sharpener body 1, a pencil inserting hole 4 is formed in the side face of the pencil sharpener body 1, the pencil inserting hole 4 is communicated with the frustum-shaped pencil sharpening cavity 7, a pencil lead cylindrical hole 5 is formed in the pencil sharpener body 1 along the direction of the central axis of the frustum-shaped pencil sharpening cavity 7, the tail end of the frustum-shaped pencil sharpening cavity 7 is communicated with one end of the pencil lead cylindrical hole 5, the diameter of the tail end of the frustum-shaped pencil sharpening cavity 7 is identical to that of the pencil lead cylindrical hole 5, the diameter of the pencil lead cylindrical hole 5 is identical to that of a pencil lead, an opening is formed in the outer wall of the frustum-shaped pencil sharpening cavity 7 along the axis direction, a blade 2 is installed on the opening, a groove 6 is formed in the upper surface of the pencil sharpener body 1, the other end of.
In the pencil sharpener provided by the present embodiment, the blade 2 is fixed to the outside of the frustum-shaped pencil sharpening cavity 7 by the tightening screw 3.
According to the pencil sharpener provided by the embodiment, the width of the groove 6 is 1mm-2mm, and the groove 6 with the width of 1mm-2mm is convenient for placing 400-mesh sand paper.
According to the pencil sharpener provided by the embodiment, the length of the pen core cylindrical hole 5 is 5 mm.
In a specific use: the tail end diameter of the frustum-shaped pencil sharpening cavity 7 is set to be the same as the diameter of the pencil core, namely, the pencil core is further sharpened after wood is sharpened, the pencil core is kept in a cylindrical shape and is continuously rotated, the pencil core enters the cylindrical hole and gradually contacts with 400-mesh abrasive paper in the groove 6 to continuously rotate the pencil, so that the pencil core is ground on the abrasive paper, and the pencil point is ground into a smooth circle for testing the hardness of the pencil.
To sum up, the utility model relates to a pencil sharpener has solved and has hardly obtained former state, not fish tail, glossy cylindrical pencil lead among the prior art, and the refill surface has the visible damage of size and fish tail, hardly makes the pencil keep vertical state refill of polishing, is difficult to obtain the problem of the smooth disc of ideal, and reasonable in design is suitable for production and popularization and application. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (4)
1. A sharpener, comprising: the pencil sharpener comprises a pencil sharpener body, wherein a frustum-shaped sharpening cavity is arranged in the middle of the pencil sharpener body, a pencil inserting hole is formed in the side face of the pencil sharpener body, the pencil inserting hole is communicated with the frustum-shaped sharpening cavity, a pencil lead cylindrical hole is formed in the pencil sharpener body along the central axis direction of the frustum-shaped sharpening cavity, the tail end of the frustum-shaped sharpening cavity is communicated with one end of the pencil lead cylindrical hole, the tail end of the frustum-shaped sharpening cavity is as large as the diameter of the pencil lead cylindrical hole, the diameter of the pencil lead cylindrical hole is as large as the diameter of a pencil lead, an opening is formed in the outer wall of the frustum-shaped sharpening cavity along the axis direction, a blade is installed on the opening, a groove is formed in the upper surface of the pencil sharpener body, the other end of the pencil lead cylindrical hole is communicated with the groove, and 400-purpose abrasive paper is placed.
2. The sharpener of claim 1 wherein said frustum-shaped sharpening cavity is externally threaded with said blade.
3. The sharpener of claim 1 wherein said groove has a width of 1mm to 2 mm.
4. The sharpener of claim 1, wherein said cartridge cylindrical bore is 5mm in length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021379769.6U CN212860909U (en) | 2020-07-14 | 2020-07-14 | Pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021379769.6U CN212860909U (en) | 2020-07-14 | 2020-07-14 | Pencil sharpener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212860909U true CN212860909U (en) | 2021-04-02 |
Family
ID=75214957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021379769.6U Active CN212860909U (en) | 2020-07-14 | 2020-07-14 | Pencil sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212860909U (en) |
-
2020
- 2020-07-14 CN CN202021379769.6U patent/CN212860909U/en active Active
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