Rotary pencil sharpener

Abstract

The utility model provides a rotary pencil sharpener, which comprises an outer shell, an inner shell and a planer tool, the outer shell and the inner shell are disc-shaped, the inner shell is wrapped in an inner cavity of the outer shell by the outer shell and is rotatably connected with the outer shell, an opening is arranged on the circumferential surface of the outer shell, the planer tool is arranged in the inner shell, an inner cavity of the inner shell is a scrap storage cavity, and the outer shell and the inner shell are in a disc shape. A chip storage cover is arranged on the circumferential face of the inner shell, a planer tool opening of the planer tool is located on the circumferential face of the inner shell, and the planer tool opening and the chip storage cover are arranged on the circumferential face of the inner shell at intervals. The multifunctional pencil sharpener is simple in structure and attractive in appearance, the pencil sharpener can be in three using states including a cutting state, a scrap pouring state and a closed dustproof state by rotating the inner shell, when the pencil sharpener is in the closed dustproof state, the inner shell can be closed, pencil scraps are prevented from leaking out, and the problem that a planer tool opening is exposed and falls off dust is solved; meanwhile, the rotating transformation mode provides an interesting interaction mode for children, and playability and interestingness of stationery are improved.

Description

Technical Field

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

[0002] A pencil sharpener is a stationery item used to sharpen pencils, primarily used by elementary school children. A typical pencil sharpener mainly consists of a shavings container and a blade holder connected to it. The blade holder has a shaving edge for inserting the pencil. To sharpen a pencil, one hand holds the shavings container, while the other hand holds the pencil, inserts it into the shaving edge, and rotates the pencil to sharpen the lead. When not in use, the shaving edge of the pencil sharpener is exposed, and pencil shavings can easily leak out from the shaving edge of the blade holder. Utility Model Content

[0003] The present invention aims to provide a rotary pencil sharpener to overcome the shortcomings of the prior art.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a rotary pencil sharpener, including an outer shell, an inner shell, and a planer blade. The outer shell and the inner shell are disc-shaped. The inner shell is covered by the outer shell and is rotatably connected to the outer shell. An opening is provided on the circumferential surface of the outer shell. The planer blade is provided inside the inner shell, and a chip collection cover is provided on the circumferential surface of the inner shell. The planer blade's cutting edge is located on the circumferential surface of the inner shell and is spaced apart from the chip collection cover on the circumferential surface of the inner shell.

[0005] Furthermore, in the aforementioned rotary pencil sharpener, the opening is fan-shaped and extends through the outer shell. The inner shell has a fan-shaped chip outlet smaller than the opening, and the chip storage cover engages with the chip outlet to seal it.

[0006] Furthermore, in the aforementioned rotary pencil sharpener, the shavings collection cover includes an arc-shaped portion and fan-shaped flat plates located at the upper and lower ends of the arc-shaped portion. One end of the fan-shaped flat plate near the center of the inner shell is provided with a side plate extending along the outer edge of the fan-shaped flat plate. The side plate is provided with a buckle protruding from the side plate. The inner shell is provided with a contour groove corresponding to the side plate, and the bottom surface of the contour groove is provided with a slot corresponding to the buckle.

[0007] Furthermore, in the aforementioned rotary pencil sharpener, the planer blade is rotatably connected to the inner shell, and a ratchet mechanism is provided between the planer blade and the inner shell body. This ratchet mechanism can restrict the planer blade from rotating clockwise and counterclockwise relative to the inner shell. Preferably, the ratchet mechanism includes a ratchet wheel disposed on the planer blade and internal ratchet teeth disposed inside the inner shell. Multiple pawls are provided on the outer side of the ratchet wheel, and the pawls engage with the teeth of the internal ratchet teeth.

[0008] Furthermore, in the aforementioned rotary pencil sharpener, the edge of the opening is provided with a support protrusion extending toward the interior of the outer shell, and the support protrusion abuts against the inner shell; the outer side of the outer shell is provided with an arc-shaped groove in the middle, the groove and the opening are located on opposite sides of the outer shell; the outer side of the inner shell is provided with a handle in the middle, the handle extends out of the groove and is slidably connected to the groove.

[0009] Furthermore, in the aforementioned rotary pencil sharpener, a pivot is provided on one side of the top of the inner shell, and an arc-shaped groove is provided on the inner side of the top of the outer shell. The pivot is inserted into the arc-shaped groove and slidably connected to the arc-shaped groove.

[0010] Furthermore, in the aforementioned rotary pencil sharpener, the outer shell is a split structure, divided into an upper outer shell and a lower outer shell by the central surface of the outer shell. The upper and lower outer shells are assembled into an outer shell by plugging in, and each of the upper and lower outer shells has an open groove at one of its close ends. The two open grooves are arranged opposite each other to form a groove.

[0011] Furthermore, in the aforementioned rotary pencil sharpener, the bottom surface of the upper outer casing has a protruding insert rod on each side near the opening, and an insertion hole on each end near the sliding groove. The top surface of the lower outer casing has a second insertion hole corresponding to the first insert rod and a second insert rod corresponding to the first insertion hole. Preferably, the inner side of the outer casing has a cylindrical boss corresponding to the first insert rod, the first insertion hole, the second insertion hole, and the second insert rod.

[0012] Furthermore, in the aforementioned rotary pencil sharpener, each side of the bottom surface of the upper outer shell near the opening is provided with an insert plate. The insert plate is arc-shaped, with one end connected to the insert rod and the other end extending along the bottom surface of the upper outer shell to the insertion hole. The lower outer shell is provided with slots corresponding to the insert plates.

[0013] Furthermore, in the aforementioned rotary pencil sharpener, the inner shell is also a split structure, divided into an upper inner shell and a lower inner shell by the central surface of the inner shell. The upper inner shell and the lower inner shell are assembled into an inner shell by plugging in, and each of the upper inner shell and the lower inner shell has a protruding U-shaped handle at one of their adjacent ends. The two U-shaped handles are connected by plugging in to form a handle.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the utility model has a simple structure and beautiful appearance. By rotating the inner shell, the pencil sharpener can present three usage states: cutting state, chip removal state, and closed dust prevention state. When the pencil sharpener is in the closed dust prevention state, it can seal the inner shell to prevent pencil shavings from leaking out, thus solving the problem of exposed blades and dust falling out. At the same time, this rotation and transformation method provides children with a fun interactive experience, improving the playability and fun of the stationery. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of the rotary pencil sharpener of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the rotary pencil sharpener of this utility model. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the structure of the rotary pencil sharpener of this utility model. Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the upper outer shell structure of the rotary pencil sharpener of this utility model;

[0020] Figure 5 This is a schematic diagram of the upper inner shell structure of the rotary pencil sharpener of this utility model;

[0021] Figure 6 This is a schematic diagram showing the three usage states of the rotary pencil sharpener of this utility model;

[0022] In the diagram: 1. Outer shell; 11. Opening; 12. Support boss; 13. Slide groove; 14. Arc-shaped groove; 15. Upper outer shell; 151. Insert rod one; 152. Insert hole one; 153. Insert plate; 16. Lower outer shell; 161. Insert hole two; 162. Insert rod two; 163. Slot; 17. Cylindrical boss;

[0023] 2. Inner shell; 21. Chip outlet; 22. Contouring groove; 23. Slot; 24. Handle; 25. Shaft; 26. Upper inner shell; 27. Lower inner shell;

[0024] 3. Planer blade; 31. Planer blade edge;

[0025] 4. Chip collection cover; 41. Side plate; 42. Buckle;

[0026] 5. Ratchet mechanism; 51. Internal ratchet; 52. Pad. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] like Figure 1-6 As shown, a rotary pencil sharpener includes an outer shell 1, an inner shell 2, and a planer 3. The outer shell 1 and inner shell 2 are disc-shaped. The inner shell 2 is enclosed within the inner cavity of the outer shell 1 and is rotatably connected to it. An opening 11 is provided on the circumferential surface of the outer shell 1. The planer 3 is located inside the inner shell 2. The inner cavity of the inner shell 2 is a chip collection cavity, and a chip collection cover 4 is provided on the circumferential surface of the inner shell 2. The planing blade 31 of the planer 3 is located on the circumferential surface of the inner shell 2 and is spaced apart from the chip collection cover 4 on the circumferential surface of the inner shell 2. Figure 6 As shown, rotating the inner shell allows the planer blade 3, the shaving cover 4, and the inner shell 2 body located between the planer blade 3 and the shaving cover 4 to rotate and face the opening 11 of the outer shell, thus presenting the pencil sharpener in three usage states: cutting state, shaving removal state, and closed dust-proof state. The top of the outer shell 1 has markings corresponding to the three states, allowing the inner shell to rotate to the accurate position. When the inner shell 2 is rotated, the planer blade 31 is exposed for cutting; when the shaving cover 4 is exposed, it is opened to remove shavings; when not in use, the planer blade 31 rotates from the opening 11 into the outer shell 1, and the shaving cover 4 is also inside the outer shell 1, both enclosed by the outer shell 1, sealing the inner shell 2 and putting the pencil sharpener in the closed dust-proof state, preventing pencil shavings from leaking out and solving the problem of dust falling from the exposed planer blade. At the same time, this rotation and transformation method provides a fun interactive method in the context of homogenized children's pencil sharpener designs, improving the playability and fun of the stationery and enhancing the user experience. In addition, the pencil sharpener is disc-shaped, which is aesthetically pleasing and distinguishes it from most similar products on the market. It breaks the convention that pencil sharpeners are all cylindrical or cylindrical variations, thus expanding the range of styles available for pencil sharpeners.

[0030] like Figure 1 , 5As shown in Figure 6, the opening 11 is fan-shaped and penetrates the outer shell 1. The inner shell 2 has a fan-shaped chip outlet 21 smaller than the opening 11. The chip storage cover 4 engages with the chip outlet 21 to close it. Specifically, the chip storage cover 4 includes an arc-shaped portion and fan-shaped flat plates at the upper and lower ends of the arc-shaped portion. The surface of the fan-shaped flat plates is also provided with anti-slip textures for easy disassembly and assembly. One end of the fan-shaped flat plate near the center of the inner shell 2 has a side plate 41 extending along the outer edge of the fan-shaped flat plate. The side plate 41 has a buckle 42 protruding from the side plate 41. The inner shell 2 has a contour groove 22 corresponding to the side plate 41. The bottom surface of the contour groove 22 has a slot 23 corresponding to the buckle 42. This connection method has a simple structure and is easy to disassemble and assemble. In this embodiment, the buckle 42 is an arc-shaped boss and the slot 23 is an arc-shaped groove, but it is not limited to these.

[0031] like Figure 1 , 6 As shown, the planer blade 3 is rotatably connected to the inner shell 2, and a ratchet mechanism 5 is provided between the planer blade 3 and the inner shell 2. The ratchet mechanism 5 can restrict the planer blade 3 from rotating clockwise and counterclockwise relative to the inner shell 2. The ratchet mechanism 5 includes a ratchet wheel on the planer blade 3 and an inner ratchet tooth 51 inside the inner shell 2. Multiple pawls 52 are provided on the outside of the ratchet wheel. In this embodiment, there are two pawls 52. The pawls 52 mesh with the teeth of the inner ratchet tooth 51. When the pen barrel is rotated clockwise, the planer blade 3 does not rotate relative to the inner shell 2 and can cut the pencil. When the pen barrel is rotated counterclockwise, the planer blade 3 is driven by the pencil to rotate relative to the inner shell 2, allowing the wrist to return to the initial position. This process is repeated to ensure that the pen barrel is held without changing the force application position when sharpening the pencil. Compared with conventional pencil sharpeners that can only rotate in one direction, this is more convenient to operate, ensures smooth cutting, and improves the pencil sharpening speed and user experience.

[0032] Example 2

[0033] Based on the structure of Example 1, such as Figure 1-5 As shown, the edge of the opening 11 is provided with a support protrusion 12 extending toward the interior of the outer shell 1. The support protrusion 12 abuts against the inner shell 1. The support protrusion 12 not only provides support but also seals the connection between the opening 11 and the inner shell 2. The outer side of the outer shell 1 is provided with an arc-shaped groove 13 in the middle. The groove 13 and the opening 11 are located on opposite sides of the outer shell 1, supporting both ends of the inner shell 2. The outer side of the inner shell 2 is provided with a handle 24 in the middle. The handle 24 extends from the groove 13 and is slidably connected to the groove 13. The groove 13 restricts the rotation angle of the handle. By setting the handle 24 and the support protrusion 12, the displacement of the inner shell 2 in the vertical direction of the outer shell 1 is restricted. By operating the handle 24 to rotate the inner shell 2, the pencil sharpener can be made to present different states.

[0034] like Figure 1 , 4As shown, a pivot 25 is provided on one side of the top of the inner shell 2, and an arc-shaped groove 14 is provided on the inner side of the top of the outer shell 1. The pivot 25 is inserted into the arc-shaped groove 14 and slidably connected to it. The pivot 25 and the arc-shaped groove 14 limit the rotation angle of the handle 24 and also limit the forward and backward movement of the inner shell 2, ensuring stable and smooth rotation. The arc-shaped groove 14 and the slide 13 are concentric arc-shaped grooves. In this embodiment, the rotation angle of the handle 24 is 180°, and it changes its state every 90° rotation.

[0035] For ease of installation, such as Figure 1 , 4 As shown, the outer shell 1 is a split structure, divided into an upper outer shell 15 and a lower outer shell 16 by the central surface of the outer shell 1. The upper outer shell 15 and the lower outer shell 16 are assembled into the outer shell 1 by plugging in. Each of the upper outer shell 15 and the lower outer shell 16 has an open slide groove at one of its close ends. The two open slide grooves are arranged opposite each other to form a slide groove 13, which is convenient for processing.

[0036] like Figure 1 , 4 As shown, the upper outer shell 15 has a protruding insertion rod 151 on each side of its bottom surface near the opening 11, and an insertion hole 152 on each end near the sliding groove 13. The lower outer shell 16 has an insertion hole 161 corresponding to the insertion rod 151 and an insertion rod 162 corresponding to the insertion hole 152 on its top surface. Furthermore, the inner side of the outer shell 1 has cylindrical bosses 17 corresponding to the insertion rod 151, insertion hole 152, insertion hole 161, and insertion rod 162, which improves the strength of the insertion joint and ensures a reliable and stable connection.

[0037] like Figure 1 , 4 As shown, the bottom surface of the upper outer shell 15 is provided with a plate 153 on each side near the opening 11. The plate 153 is arc-shaped, with one end connected to the first insertion rod 151 and the other end extending along the bottom surface of the upper outer shell 15 to the first insertion hole 152. The lower outer shell 16 is provided with a slot 163 corresponding to the plate 153. The connection between the upper outer shell 15 and the lower outer shell 16 is achieved by inserting the first insertion rod 151 into the second insertion hole 161, inserting the second insertion rod 162 into the first insertion hole 152, and inserting the plate 153 into the slot 163, ensuring a tight and stable connection.

[0038] For ease of installation, such as Figure 1 , 5As shown, the inner shell 2 is also a split structure, divided into an upper inner shell 26 and a lower inner shell 27 by its central surface. The upper inner shell 26 and the lower inner shell 27 are assembled into the inner shell 2 by plugging them together. Each of the upper inner shell 26 and the lower inner shell 27 has a protruding U-shaped handle at one of its adjacent ends. The two U-shaped handles are plugged together to form a handle 24. The plugging structure of the upper inner shell 26 and the lower inner shell 27 is similar to that of the outer shell 1, and is connected by four pairs of plug rods and plug holes, and plug plates and slots. It will not be described in detail here.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotary pencil sharpener, characterized in that: The device includes an outer shell, an inner shell, and a planer blade. The outer shell and the inner shell are disc-shaped. The inner shell is enclosed in the inner cavity of the outer shell and is rotatably connected to the outer shell. The outer shell has an opening on its circumferential surface. The inner shell contains the planer blade, and the inner shell has a chip collection cover on its circumferential surface. The planer blade's cutting edge is located on the circumferential surface of the inner shell and is spaced apart from the chip collection cover on the circumferential surface of the inner shell.

2. The rotary pencil sharpener according to claim 1, characterized in that: The opening is fan-shaped and extends through the outer shell. The inner shell has a fan-shaped chip outlet smaller than the opening. The chip storage cover is engaged with the chip outlet to seal it.

3. The rotary pencil sharpener according to claim 2, characterized in that: The chip collection cover includes an arc-shaped portion and fan-shaped flat plates located at the upper and lower ends of the arc-shaped portion. The end of the fan-shaped flat plate near the center of the inner shell is provided with a side plate extending along the outer edge of the fan-shaped flat plate. The side plate is provided with a buckle protruding from the side plate. The inner shell is provided with a contour groove corresponding to the side plate, and the bottom surface of the contour groove is provided with a slot corresponding to the buckle.

4. The rotary pencil sharpener according to claim 1, characterized in that: The planer blade is rotatably connected to the inner shell, and a ratchet mechanism is provided between the planer blade and the inner shell body. The ratchet mechanism can limit the planer blade to stop clockwise and rotate counterclockwise relative to the inner shell.

5. The rotary pencil sharpener according to claim 1, characterized in that: The edge of the opening is provided with a support boss extending toward the inside of the outer shell, and the support boss abuts against the inner shell; the outer side of the outer shell is provided with an arc-shaped sliding groove in the middle, and the sliding groove and the opening are located on opposite sides of the outer shell; the outer side of the inner shell is provided with a handle in the middle, and the handle extends out of the sliding groove and is slidably connected to the sliding groove.

6. The rotary pencil sharpener according to claim 5, characterized in that: The inner shell has a rotating shaft on one side of its top, and the outer shell has an arc-shaped groove on its inner side of its top. The rotating shaft is inserted into the arc-shaped groove and is slidably connected to it.

7. The rotary pencil sharpener according to claim 1 or 5, characterized in that: The outer shell is a split structure, divided into an upper outer shell and a lower outer shell by the central surface of the outer shell. The upper outer shell and the lower outer shell are assembled into an outer shell by plugging in. Each of the upper outer shell and the lower outer shell has an open sliding groove at one of its close ends. The two open sliding grooves are arranged opposite each other to form a sliding groove.

8. The rotary pencil sharpener according to claim 7, characterized in that: The bottom surface of the upper outer shell has a protruding insert rod on each side near the opening, and an insertion hole on each end near the sliding groove. The top surface of the lower outer shell has an insertion hole corresponding to the insert rod and an insert rod corresponding to the insertion hole.

9. The rotary pencil sharpener according to claim 8, characterized in that: The bottom surface of the upper outer shell is provided with a plug plate on each side near the opening. The plug plate is arc-shaped, with one end connected to the plug rod and the other end extending along the bottom surface of the upper outer shell to the plug hole. The lower outer shell is provided with a slot corresponding to the plug plate.

10. The rotary pencil sharpener according to claim 7, characterized in that: The inner shell is also a split structure, divided into an upper inner shell and a lower inner shell by the central surface of the inner shell. The upper inner shell and the lower inner shell are assembled into an inner shell by plugging them together. Each of the upper inner shell and the lower inner shell has a protruding U-shaped handle at one of its close ends. The two U-shaped handles are connected together to form a handle.

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