A knife holder assembly of a pencil sharpener and a pencil sharpener

Abstract

The application discloses a knife holder assembly of a pencil sharpener and the pencil sharpener. The knife holder assembly comprises a knife holder body and a hob installed on the knife holder body. The knife holder body is provided with a pencil sharpening cavity for the pencil to pass through. The knife holder body is provided with a plurality of discharge channels in communication with the pencil sharpening cavity. The plurality of discharge channels are used for discharging the cuttings. By designing the large-size discharge channels, the cuttings such as the stubs and pencil shavings generated in the cutting process can be smoothly discharged, the blockage is avoided, and the overall service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of stationery technology, and more specifically to a pencil sharpener blade assembly and a pencil sharpener. Background Technology

[0002] A pencil sharpener is a common stationery item, primarily used for sharpening pencils, and widely used in learning, office work, and drawing. Its basic principle is that the relative movement of the blade assembly and the pencil removes the outer wooden part of the pencil, exposing the lead and sharpening the tip for easier use. During operation, the wooden part of the pencil is cut off by the blade assembly, forming wood shavings. These shavings tend to accumulate inside the blade assembly, gradually building up over time and affecting its normal rotation. This accumulation not only reduces the sharpening efficiency but can also cause the blade assembly to jam or even damage the sharpener.

[0003] To address the aforementioned issues, Chinese invention patent CN106079988B discloses a pencil sharpener for sketching pencils, comprising a blade holder rotatably connected within a housing and an upper seat connected within the housing. The upper seat is located above the blade holder. The upper end of the blade holder is provided with a tool drive gear, and a tool is rotatably connected to one side of the blade holder. The tool is connected to the tool drive gear. The blade holder has a tapered pencil sharpening hole, and a sharpening kerf is provided on the inner wall of the pencil sharpening hole near the tool. In this technical solution, an opening is provided below the pencil sharpening hole on the other side of the blade holder, allowing broken pencil leads to fall not only through the gap of the front roller blade but also through the opening, thus solving the problem of jamming caused by the accumulation of sawdust in traditional pencil sharpeners.

[0004] However, the aforementioned pencil sharpeners are still difficult to apply to dipped pencils. The dipped tip refers to the part of the pencil that has undergone a dipping process (or varnishing process), typically used to protect the wooden part of the pencil from damage during use, while also increasing the pencil's appearance and durability. After varnishing, the dipped tip has a higher hardness, creating a significant difference in hardness compared to the wooden part. During the cutting process, the blade assembly cuts off the entire dipped tip instead of gradually shaving it off. The large size of the dipped tip makes it prone to getting stuck in the sharpening chamber, causing the sharpener to malfunction or even jam. The aforementioned pencil sharpeners only have an opening at the bottom of the blade holder; for larger dipped tips, this opening cannot effectively expel them, affecting the actual performance of the sharpener. Therefore, a pencil sharpener capable of effectively expelling the dipped tip is still needed. Summary of the Invention

[0005] The technical problem to be solved by this application is to provide a blade holder assembly for a pencil sharpener and a pencil sharpener. The blade holder assembly is designed with a large-sized discharge channel to ensure that the shavings and pencil shavings generated during the cutting process can be discharged smoothly, avoiding blockage and extending the overall service life.

[0006] This application provides a blade holder assembly for a pencil sharpener, including a blade holder body and a roller cutter mounted on the blade holder body. The blade holder body has a sharpening cavity for inserting a pencil, and several discharge channels communicating with the sharpening cavity. These discharge channels are used to discharge shavings. In this technical solution, the roller cutter is mounted on the blade holder body and is used to cut the wooden part and lead of the pencil. The sharpening cavity is for inserting the pencil, and the roller cutter cuts the pencil inside the sharpening cavity. The discharge channels are designed on the blade holder body and communicate with the sharpening cavity, forming a large-sized discharge channel to ensure that the shavings and pencil shavings generated during the cutting process can be smoothly discharged, avoiding blockage. The discharge channels are adapted to the sharpening cavity to ensure smooth discharge. By reducing the accumulation of shavings in the sharpening cavity, cutting resistance is reduced, wear on the blade holder assembly is reduced, and the overall service life is extended.

[0007] As an improvement, several of the discharge channels extend along the pen-feeding direction. In this technical solution, the discharge channels are designed to extend along the pen-feeding direction, reducing the resistance of shavings and ink residue during the discharge process. This allows shavings and ink residue to be smoothly discharged from the pencil sharpening chamber, reducing the possibility of blockage and improving the stability and reliability of the pencil sharpener.

[0008] As an improvement, the discharge channel includes a sharpening start end and a sharpening end end, with the width of the sharpening start end being greater than the width of the sharpening end end. In this technical solution, the sharpening chamber is connected to the discharge channel, and the sharpening chamber is also part of the discharge channel. The sharpening start end refers to the starting point of sharpening within the sharpening chamber where the roller cutter begins; its width is larger to accommodate larger shavings. The sharpening end end refers to the point where the sharpening chamber is finished by the roller cutter; its width is smaller, but it can still discharge shavings. The width of the discharge channel gradually decreases from the sharpening start end to the sharpening end end, forming a tapered channel. This reduces the problem of the sharpener jamming due to the accumulation of pencil shavings and sticky parts, improving the stability and reliability of the sharpener. It should be noted that the sharpening end end does not refer to the end of the discharge channel. The end of the discharge channel refers to the position where pencil shavings and sticky parts are finally discharged from the sharpener. Therefore, the discharge channel is larger in size to ensure that the pencil shavings can be completely discharged along the discharge channel.

[0009] As an improvement, the width of the starting end of the pencil sharpening device ranges from 5 mm to 9 mm, and the width of the ending end ranges from 1.6 mm to 4.5 mm. In this technical solution, through the aforementioned size range design, the discharge channel can completely discharge the shavings while ensuring the pencil is still evenly sharpened and protecting the pencil holder from damage.

[0010] As an improvement, in at least one of the described discharge channels, the length of the discharge channel is greater than or equal to the length of the sharpening chamber. In this technical solution, the discharge channel is used to accommodate pencil shavings and stubble generated during the cutting process, and to discharge these wastes from the sharpening chamber. The design of at least one discharge channel with a length greater than or equal to the length of the sharpening chamber, where the length refers to the length of the discharge channel and the sharpening chamber along the pencil feed direction, ensures that any stubble that is shaved off at any position can be smoothly discharged through the discharge channel, reducing the possibility of clogging.

[0011] As an improvement, the discharge channels are arranged in separate rows. In this technical solution, the discharge channels are located at different positions on the tool holder body and are not directly connected, increasing the number of discharge channels and ensuring that waste can be discharged smoothly.

[0012] As an improvement, the tool holder body is provided with multiple reinforcing ribs. In this technical solution, the reinforcing ribs are distributed in key parts of the tool holder body to enhance the structural strength of the tool holder body. The reinforcing ribs can effectively disperse the stress generated during the cutting process and prevent the tool holder body from deforming or cracking due to stress concentration during long-term use.

[0013] As an improvement, a pencil-stopping block is slidably mounted on the pencil holder body. In this technical solution, the pencil-stopping block is slidably mounted inside the pencil holder and can move along the pencil insertion direction within the pencil holder. The main function of the pencil-stopping block is to prevent the pencil from being excessively inserted into the pencil-sharpening cavity during the sharpening process, thereby protecting the pencil from being over-cut. The sliding mounting design allows the pencil-stopping block to automatically adjust its position according to the insertion depth of the pencil, improving the pencil-sharpening quality.

[0014] As an improvement, the blade holder body is provided with a sliding groove for mounting the pen-stopping block, and the sliding groove is connected to the discharge channel. In this technical solution, the sliding groove is used to slide and mount the pen-stopping block, ensuring the sliding efficiency and reliability of the pen-stopping block. The design of the sliding groove connecting to the discharge channel increases the size of the discharge channel, ensuring that the shavings can be discharged smoothly, reducing the possibility of blockage, and improving the stability and reliability of the pencil sharpener.

[0015] This application also discloses a pencil sharpener, including the blade holder assembly of any of the aforementioned pencil sharpeners. In this technical solution, the blade holder assembly is designed with a large-sized discharge channel to ensure that the shavings generated during the cutting process can be smoothly discharged, avoiding blockage and extending the overall service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the pencil holder assembly in this application.

[0017] Figure 2 This is a three-dimensional structural diagram of the tool holder assembly in this application.

[0018] Figure 3 This is a cross-sectional view of the tool holder assembly in this application.

[0019] Figure 4 A three-dimensional structural diagram showing multiple discharge channels for the tool holder assembly in this application.

[0020] The figure shows: 1. Knife holder body; 11. Reinforcing rib; 12. Slide groove; 2. Roller blade; 3. Pencil sharpening chamber; 4. Pencil; 41. Dipping part; 5. Discharge channel; 51. Pencil sharpening starting end; 52. Pencil sharpening ending end; 6. Pencil blocking block. Detailed Implementation

[0021] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0022] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0023] It should also be understood that the terms "comprising," "including," "having," "containing," and "including," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and constructions may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0024] Furthermore, it should be noted that the terms "installation," "setting," "equipped with," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components; they can refer to a direct installation on another component or the possible presence of another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] This application discloses a pencil sharpener, including a blade holder body 1 and a roller cutter 2 mounted on the blade holder body 1. The blade holder body 1 is provided with a sharpening cavity 3 for inserting pencils. The blade holder body 1 is provided with a plurality of discharge channels 5 communicating with the sharpening cavity 3. The plurality of discharge channels 5 are used to discharge shavings. The roller cutter 2 is mounted on the blade holder body 1 and is used to cut the wooden part and lead of the pencil 4. The sharpening cavity 3 is used for inserting pencils. The pencil 4 in the sharpening cavity 3 is cut by the roller cutter 2. The discharge channels 5 are designed on the blade holder body 1 and communicate with the sharpening cavity 3 to form a large-sized discharge channel 5 to ensure that the sticky part 41 and pencil shavings generated during the cutting process can be discharged smoothly and avoid blockage. A plurality of discharge channels 5 can be provided. The discharge channels 5 are adapted to the sharpening cavity 3 to ensure the smoothness of the discharge channels 5. By reducing the accumulation of sticky part 41 and pencil shavings in the sharpening cavity 3, the cutting resistance is reduced, the wear of the blade holder assembly is reduced, and the overall service life is extended.

[0026] More specifically, such as Figure 2 and Figure 3 As shown, several discharge channels 5 extend along the pen feeding direction, reducing the resistance of shavings and sticky parts 41 during the discharge process. The shavings and sticky parts 41 can be smoothly discharged from the pencil sharpening chamber 3, reducing the possibility of blockage and improving the stability and reliability of the pencil sharpener.

[0027] More specifically, such as Figure 2 and Figure 3As shown, the discharge channel 5 includes a sharpening start end 51 and a sharpening end end 52. The width of the sharpening start end 51 is greater than the width of the sharpening end end 52. The sharpening cavity 3 is connected to the discharge channel 5 and is also part of the discharge channel 5. The sharpening start end 51 refers to the starting point of sharpening the pencil within the sharpening cavity 3 where the roller cutter 2 begins. Its width is larger, capable of accommodating the larger sticky tip 41 and pencil shavings. The sharpening end end 52 refers to the ending point of sharpening within the sharpening cavity 3 where the pencil is sharpened by the roller cutter 2. Its width is smaller, but it can still discharge the sticky tip 41 and pencil shavings. As the pencil shavings accumulate, the width of the discharge channel 5 gradually decreases from the starting end 51 to the ending end 52, forming a narrowing channel. This reduces the problem of the pencil sharpener jamming due to the accumulation of pencil shavings and the sticky part 41, and improves the stability and reliability of the pencil sharpener. It should be noted that the ending end 52 does not refer to the end of the discharge channel 5. The end of the discharge channel 5 refers to the position where the pencil shavings and the sticky part 41 are finally discharged from the pencil sharpener. Therefore, the size of the discharge channel 5 is relatively large to ensure that the sticky part 41 and pencil shavings cut by the pencil 4 can be completely discharged along the discharge channel 5.

[0028] More specifically, such as Figure 2 and Figure 3 As shown, the width of the starting end 51 of the pencil sharpening tool ranges from 5 mm to 9 mm, and the width of the ending end 52 of the pencil sharpening tool ranges from 1.6 mm to 4.5 mm. A comparison of the widths of the starting end 51 and the ending end 52 of the pencil sharpening tool is shown in Table 1. Through the aforementioned size range design, the discharge channel 5 can ensure that the pencil 4 can still be evenly sharpened while completely discharging the sticky part 41 and pencil shavings, and protect the pencil holder body 1 from damage.

[0029] 4.0 1.2 Approximately 50% of the material was blocked. 5.0 1.6 No material blockage 5.5 1.8 No material blockage 6.0 2.5 No material blockage 7.0 3.0 No material blockage 9.0 4.5 No material blockage 10.0 5.5 Tool holder body damaged Table 1 More specifically, such as Figure 2 and Figure 3 As shown, among the plurality of discharge channels 5, at least one discharge channel 5 has a length dimension greater than or equal to the length dimension of the pencil sharpening chamber 3. The discharge channel 5 is used to accommodate pencil shavings and stubble 41 generated during the cutting process, and to discharge these wastes from the pencil sharpening chamber 3 through the discharge channel 5. The length dimension of at least one discharge channel 5 is designed to be greater than or equal to the length dimension of the pencil sharpening chamber 3. This length dimension refers to the length dimension of the discharge channel 5 and the pencil sharpening chamber 3 along the pencil feeding direction, ensuring that the stubble 41 can be smoothly discharged through the discharge channel 5 when it is cut off at any position, reducing the possibility of blockage.

[0030] More specifically, such as Figure 4 As shown, several discharge channels 5 are arranged in a row. The multiple discharge channels 5 are located at different positions on the tool holder body 1 and are not directly connected. This increases the number of discharge channels 5 and ensures that waste can be discharged smoothly.

[0031] More specifically, such as Figure 2 As shown, the tool holder body 1 is provided with multiple reinforcing ribs 11. The reinforcing ribs 11 are distributed in key parts of the tool holder body 1 to enhance the structural strength of the tool holder body 1. The reinforcing ribs 11 can effectively disperse the stress generated during the cutting process and prevent the tool holder body 1 from deforming or cracking due to stress concentration during long-term use.

[0032] More specifically, such as Figure 1 As shown, a pencil stop block 6 is slidably mounted on the pencil holder body 1. The pencil stop block 6 can move within the pencil holder along the pencil insertion direction. The main function of the pencil stop block 6 is to prevent the pencil 4 from being excessively inserted into the pencil sharpening cavity 3 during the pencil sharpening process, thereby protecting the pencil 4 from being over-cut. The sliding installation design allows the pencil stop block 6 to automatically adjust its position according to the insertion depth of the pencil 4, thus improving the pencil sharpening quality.

[0033] More specifically, such as Figure 3 As shown, the blade holder body 1 is provided with a slide groove 12 for installing the pen block 6. The slide groove 12 is connected to the discharge channel 5. The slide groove 12 is used to slide the pen block 6 to ensure the sliding efficiency and reliability of the pen block 6. The design of the slide groove 12 being connected to the discharge channel 5 expands the size of the discharge channel 5, ensuring that the shavings can be discharged smoothly, reducing the possibility of blockage, and improving the stability and reliability of the pencil sharpener.

[0034] This embodiment also discloses a pencil sharpener, including the aforementioned blade holder assembly. The blade holder assembly is designed with a large-sized discharge channel 5 to ensure that the stubble 41 and pencil shavings generated during the cutting process can be discharged smoothly, avoiding blockage and extending the overall service life.

[0035] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A knife holder assembly of a pencil sharpener, comprising a knife holder body (1) and a rolling cutter (2) mounted on the knife holder body (1), a pencil cavity (3) for a pencil to pass through is arranged on the knife holder body (1), characterized in that, The tool holder body (1) is provided with a plurality of discharge channels (5) that communicate with the pencil sharpening chamber (3), and the plurality of discharge channels (5) are used to discharge the shavings.

2. The blade holder assembly of a pencil sharpener according to claim 1, characterized in that, All of the aforementioned discharge channels (5) extend along the pen-feeding direction.

3. The blade holder assembly of a pencil sharpener according to claim 1, characterized in that, The discharge channel (5) includes a sharpening start end (51) and a sharpening end end (52), wherein the width of the sharpening start end (51) is greater than the width of the sharpening end end (52).

4. The blade holder assembly of a pencil sharpener according to claim 3, characterized in that, The width of the starting end (51) of the pencil sharpener is in the range of 5 mm to 9 mm, and the width of the ending end (52) of the pencil sharpener is in the range of 1.6 mm to 4.5 mm.

5. The blade holder assembly of a pencil sharpener according to claim 1, characterized in that, In the plurality of discharge channels (5), at least one of the discharge channels (5) has a length dimension greater than or equal to the length dimension of the pencil sharpening cavity (3).

6. The blade holder assembly of a pencil sharpener according to claim 1, characterized in that, Several discharge channels (5) are arranged in rows.

7. The blade holder assembly of a pencil sharpener according to claim 1, characterized in that, The tool holder body (1) is provided with multiple reinforcing ribs (11).

8. The blade holder assembly of a pencil sharpener according to claim 1, characterized in that, A pen block (6) is slidably mounted on the tool holder body (1).

9. The blade holder assembly of a pencil sharpener according to claim 8, characterized in that, The tool holder body (1) is provided with a slide groove (12) for installing a pen block (6), and the slide groove (12) is connected to the discharge channel (5).

10. A pencil sharpener, characterized in that, Includes the blade holder assembly of a pencil sharpener as described in any one of claims 1-9.

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