A pencil sharpener

Abstract

The utility model provides a pencil sharpener, including lower casing and upper casing, the lower casing top fixedly connected with the limiting middle board, the upper casing top has opened the grinding groove, the lower casing and the upper casing inboard have opened the collection cavity, the limiting middle board inboard fixedly connected with the grinding plate that has opened V type groove, the grinding plate top slide connection has the translation plate, the translation plate top fixedly connected with the pencil limiting cylinder, the pencil limiting cylinder slide connection is in the inboard of grinding groove, the grinding is completed through the mode of combination of sliding and down -pressing rotation, when using, the pencil is inserted pencil limiting cylinder and contacts the lower grinding plate, the user hand holds the pencil and reciprocating slide in the grinding groove and synchronous down -pressing rotation, utilize the V -shaped groove of grinding plate and carry out even grinding to the nib, have simple operation, can efficiently grind out smooth sharp nib, the debris produced in the grinding process falls into the closed collection cavity directly, effectively prevent the debris and leak and pollute the environment's advantage.

Description

Technical Field

[0001] This utility model relates to the field of pencil sharpener technology, and in particular to a pencil sharpener. Background Technology

[0002] Sharpening pencil sharpeners use high-speed friction from an internal whetstone to sharpen pencils, rather than cutting with a blade. This provides excellent lead-prevention, as the sharpening process is even and gentle, minimizing impact on the tip and effectively preventing lead breakage during sharpening. They are especially suitable for softer colored pencils or drawing pencils, reducing waste and meeting various needs from everyday writing to professional drawing. The fine shavings produced are also easier to collect and clean than flaky shavings. However, most sharpening pencil sharpeners on the market require manual angle control, which is not conducive to rapid sharpening and can easily break the tip if not handled carefully. Utility Model Content

[0003] In view of this, the present invention aims to provide a pencil sharpener to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0004] The technical solution of this utility model embodiment is implemented as follows: it includes a lower shell and an upper shell. A limiting middle plate is fixedly connected to the upper part of the lower shell. A grinding groove is opened on the upper part of the upper shell. A collection cavity is opened on the inner side of the lower shell and the upper shell. A grinding plate with a V-shaped groove is fixedly connected to the inner side of the limiting middle plate. A translation plate is slidably connected above the grinding plate. A pencil limiting cylinder is fixedly connected above the translation plate. The pencil limiting cylinder is slidably connected to the inner side of the grinding groove.

[0005] In some embodiments, a mating boss is fixedly connected to one side of the lower housing and the upper housing, and a chip discharge cover is fixedly connected to the other side of the mating boss.

[0006] In some embodiments, a plurality of docking cylinders are fixedly connected to the inner side of the lower housing, and a plurality of docking piles are fixedly connected to the inner side of the upper housing, with the docking piles inserted into the inner side of the docking cylinders.

[0007] In some embodiments, the translation plate has hanging holes on both sides, and the hanging holes are connected to one end of the docking cylinder above by a spring.

[0008] In some embodiments, limiting side plates are fixedly connected to both sides of the lower housing, and the inner wall of the limiting side plates is slidably connected to the translation plate.

[0009] In some embodiments, the lower housing, the upper housing, and the chip discharge cover are covered with a protective sleeve, and a hanging hole and a sleeve tongue are fixedly connected to one side of the protective sleeve.

[0010] In some embodiments, one end of the tongue is fixedly connected to a sealing plug one and a sealing plug two, the sealing plug one being inserted into the inner side of the grinding groove and the sealing plug two being inserted into the inner side of the pencil limiting cylinder.

[0011] The present invention has the following advantages due to the adoption of the above technical solution: 1. A pencil sharpener that sharpens pencils by combining sliding and downward rotation. In use, the pencil is inserted into the pencil retaining tube and contacts the grinding plate below. The user holds the pencil and slides it back and forth in the grinding groove while simultaneously pressing down and rotating it. The V-shaped groove of the grinding plate is used to evenly sharpen the pencil tip. It has the advantages of simple operation, efficient sharpening of a smooth and sharp pencil tip, and direct collection of the shavings generated during the sharpening process into a closed collection chamber, effectively preventing the shavings from leaking out and polluting the environment.

[0012] 2. A pencil sharpener, wherein a sliding plate is connected to the housing via a spring, and when not in use, it is reset by the spring tension, causing the pencil limiting cylinder to close the entrance of the grinding groove, ensuring that the chip channel is blocked when not in use, and further improving the product's chip prevention capability and hygiene.

[0013] 3. A pencil sharpener, which provides grip protection and hanging carrying function through a rubber protective sleeve, and the sealing plugs on it can be inserted into the sharpening groove and the pencil retaining tube respectively, thereby locking the internal moving parts when carrying or storing, effectively preventing the leakage of debris due to accidental movement, and enhancing the sealing and portability of the product.

[0014] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of the main body of this utility model; Figure 2 This is a structural diagram of the protective sleeve of this utility model; Figure 3 This is an exploded structural diagram of the main body of this utility model; Figure 4 This is an exploded structural diagram of the shell of this utility model; Figure 5 This is a structural diagram of the lower shell of this utility model. Figure 6 This is a structural diagram of the pencil limiting cylinder of this utility model.

[0017] Figure label: 1. Lower housing; 2. Upper housing; 3. Protective sleeve; 4. Tongue; 5. Hanging hole; 6. Chip removal cover; 7. Sealing plug one; 8. Sealing plug two; 9. Grinding groove; 10. Pencil limiting cylinder; 11. Docking boss; 12. Collection chamber; 13. Translation plate; 14. Hanging hole; 15. Spring; 16. Docking cylinder; 17. Docking post; 18. Limiting side plate; 19. Limiting middle plate; 20. Grinding plate. Detailed Implementation

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] Example 1: As Figure 1-6 As shown, a pencil sharpener includes a lower housing 1 and an upper housing 2, which are glued together. A limiting plate 19 is fixedly connected to the upper part of the lower housing 1, and a grinding groove 9 is opened on the upper part of the upper housing 2. A collection cavity 12 is opened on the inner side of the lower housing 1 and the upper housing 2. A grinding plate 20 with a V-shaped groove is fixedly connected to the inner side of the limiting plate 19. A translation plate 13 is slidably connected above the grinding plate 20. A pencil limiting cylinder 10 is fixedly connected above the translation plate 13 and slidably connected to the inner side of the grinding groove 9. When using a pencil, if the pencil tip becomes dull and short after use and affects its use, insert the pencil tip into the pencil limiting tube 10, which has a conical inner wall, so that it is horizontal with the shell. At this time, the lower end of the pencil will be inserted into the inside of the shell and contact the grinding plate 20 below. Then, the user slides their hand back and forth, causing the pencil to move back and forth so that the metal grinding plate 20 can grind the pencil. At the same time, the user presses down and rotates the pencil, using the V-shaped groove of the grinding plate 20 to continuously grind the pencil tip from both sides. After grinding repeatedly, a pencil tip that is evenly ground, smooth and sharp can be obtained. The operation is simple and the grinding debris will fall into the collection chamber 12, which can prevent the grinding debris from floating and polluting the office environment.

[0021] In this embodiment, a docking boss 11 is fixedly connected to one side of the lower housing 1 and the upper housing 2, and a chip removal cover plate 6 is fixedly connected to the other side of the docking boss 11. The docking boss 11 can be docked with the chip removal cover plate 6 for easy docking. After a period of use, the chip removal cover plate 6 can be pulled out to facilitate the removal of debris.

[0022] In this embodiment, a plurality of docking cylinders 16 are fixedly connected to the inner side of the lower housing 1, and a plurality of docking posts 17 are fixedly connected to the inner side of the upper housing 2, with the docking posts 17 inserted into the inner side of the docking cylinders 16. The translation plate 13 has hanging holes 14 on both sides, and the hanging holes 14 are connected to one end of the docking cylinder 16 above by a spring 15. The lower housing 1 has fixedly connected limit side plates 18 on both sides, and the inner wall of the limit side plates 18 is slidably connected to the translation plate 13. The docking pile 17 and docking cylinder 16 facilitate production and installation, while the side limit plates 18 on both sides can restrict the stable reciprocating sliding of the translation plate 13. When not in use, the spring 15 can pull the translation plate 13 to one side, at which time the pencil limit cylinder 10 can block one side of the grinding groove 9 to prevent the debris in the collection chamber 12 from flowing out.

[0023] In this embodiment: When the pencil tip becomes dull and short after use, affecting its use, the pencil tip is inserted into the pencil limiting tube 10 with a conical inner wall, so that it is horizontal with the shell. At this time, the lower end of the pencil will be inserted into the inside of the shell and contact the grinding plate 20 below. Then, the user slides their hand back and forth, causing the pencil to move back and forth so that the metal grinding plate 20 can grind the pencil. At the same time, the user presses down and rotates the pencil, using the V-shaped groove of the grinding plate 20 to continuously grind the pencil tip from both sides. After grinding repeatedly, a pencil tip that is evenly ground, smooth and sharp can be obtained. The operation is simple and the grinding debris will fall into the collection chamber 12, which can prevent the grinding debris from floating and polluting the office environment. The docking boss 11 facilitates docking with the chip removal cover 6. After a period of use, the chip removal cover 6 can be pulled out to facilitate the removal of chips. The docking post 17 and the docking cylinder 16 facilitate production and installation. The side limiting plates 18 on both sides can restrict the stable reciprocating sliding of the translation plate 13. When not in use, the spring 15 can pull the translation plate 13 to one side, at which time the pencil limiting cylinder 10 can block one side of the grinding groove 9 to prevent the chips in the collection chamber 12 from flowing out.

[0024] Example 2: A pencil sharpener. This example is an improvement on Example 1, as follows: Figure 1-6 As shown, In this embodiment, the lower housing 1, the upper housing 2 and the chip discharge cover 6 are covered with a protective sleeve 3. A hanging hole 5 and a tongue 4 are fixedly connected to one side of the protective sleeve 3. The protective sleeve 3 is made of rubber and is easy to carry. One end of the tongue 4 is fixedly connected to a sealing plug 7 and a sealing plug 8. The sealing plug 7 is inserted into the inside of the grinding groove 9, and the sealing plug 8 is inserted into the inside of the pencil limiting cylinder 10. The sealing plug 7 and the sealing plug 8 can prevent the sliding plate 13 and the pencil limiting cylinder 10 from sliding. This can further prevent the internal debris from flowing out and contaminating the working environment due to the movement of the sliding plate 13.

[0025] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A pencil sharpener, comprising a lower housing (1) and an upper housing (2), characterized in that: The lower housing (1) is fixedly connected to a limiting plate (19), the upper housing (2) has a grinding groove (9) on its upper side, and the lower housing (1) and the upper housing (2) have a collection cavity (12) on their inner sides. The limiting plate (19) is fixedly connected to a grinding plate (20) with a V-shaped groove on its inner side. The grinding plate (20) is slidably connected to a translation plate (13) on its upper side. The translation plate (13) is fixedly connected to a pencil limiting cylinder (10) on its upper side. The pencil limiting cylinder (10) is slidably connected to the inner side of the grinding groove (9).

2. A pencil sharpener according to claim 1, characterized in that: The lower housing (1) and the upper housing (2) are fixedly connected to a mating boss (11) on one side, and a chip removal cover plate (6) is fixedly connected to the other side of the mating boss (11).

3. A pencil sharpener according to claim 2, characterized in that: Multiple docking cylinders (16) are fixedly connected to the inner side of the lower shell (1), and multiple docking piles (17) are fixedly connected to the inner side of the upper shell (2). The docking piles (17) are inserted into the inner side of the docking cylinders (16).

4. A pencil sharpener according to claim 3, characterized in that: The translation plate (13) has hanging holes (14) on both sides, and the hanging holes (14) and one end of the docking cylinder (16) above are connected by a spring (15).

5. A pencil sharpener according to claim 4, characterized in that: The lower housing (1) is fixedly connected to two sides of a limiting side plate (18), and the inner wall of the limiting side plate (18) is slidably connected to the translation plate (13).

6. A pencil sharpener according to claim 1, characterized in that: The lower housing (1), upper housing (2) and chip discharge cover (6) are covered with a protective sleeve (3), and a hanging hole (5) and a tongue (4) are fixedly connected to one side of the protective sleeve (3).

7. A pencil sharpener according to claim 6, characterized in that: One end of the tongue (4) is fixedly connected to a sealing plug one (7) and a sealing plug two (8). The sealing plug one (7) is inserted into the inside of the grinding groove (9), and the sealing plug two (8) is inserted into the inside of the pencil limiting cylinder (10).

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