Electric pencil sharpener

Abstract

This application discloses an electric pencil sharpener, including a housing, a sharpening mechanism, and a core assembly. The sharpening mechanism and the core assembly are both installed inside the housing. The core assembly drives the sharpening mechanism to sharpen pencils. A soundproof cover is installed between the housing and the core assembly, covering the outer periphery of the core assembly to isolate the noise generated by the core assembly. By adding a soundproof cover between the housing and the core assembly, the noise generated by the core assembly is effectively isolated, thus solving the problem of excessive motor noise in existing electric pencil sharpeners and improving the overall user experience of the product.

Description

Technical Field

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

[0002] A pencil sharpener is a widely used stationery item in learning, office work, and drawing. Its main function is to cut pencils using a sharpening mechanism, exposing the lead and creating a sharp tip for easier use. While manual pencil sharpeners are simple in structure and low in cost, they are laborious to use, slow in speed, and the lead thickness is difficult to control precisely. With societal development, people have increasingly higher demands for the convenience of learning and office supplies. Traditional manual pencil sharpening methods can no longer meet the need for fast and efficient sharpening, leading to the development of electric pencil sharpeners. Electric pencil sharpeners primarily use a motor to drive the sharpening mechanism to automatically complete the sharpening process; however, the motor generates significant noise during operation, affecting the user experience. To address the aforementioned issues, Chinese utility model patent CN215792887U discloses an electric pencil sharpener, comprising a top cover rotatably fitted with a pencil sharpener, a chip collection box with an upper opening, and a base on which a drive assembly is mounted. The drive assembly drives the pencil sharpener to rotate, and the top cover covers the chip collection box to close the upper opening. The top cover has a pencil inlet hole aligned with the pencil insertion hole of the pencil sharpener. The chip collection box includes a transparent peripheral wall and a chip collection cavity enclosed by the peripheral wall, and the pencil sharpener is located within the chip collection cavity. In the aforementioned technical solution, the electric pencil sharpener base is equipped with a drive assembly, which includes a motor, a worm gear, a worm wheel, and a reduction gear that cooperate to form a driving relationship. The motor in the drive assembly is in a horizontal position, which can reduce the noise and vibration generated by the motor operation. However, this drive structure design is complex and has limited noise reduction effect on the motor. Therefore, there is still a need for an electric pencil sharpener that can effectively reduce motor noise. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide an electric pencil sharpener that effectively solves the problem of excessive motor noise in existing electric pencil sharpeners by adding a soundproof cover between the housing and the core assembly, thereby improving the overall user experience of the product.

[0004] This application provides an electric pencil sharpener, including a housing, a pencil sharpening mechanism, and a core assembly. The pencil sharpening mechanism and the core assembly are both installed inside the housing. The core assembly is used to drive the pencil sharpening mechanism to sharpen pencils. A soundproof cover is installed between the housing and the core assembly. The soundproof cover is disposed on the outer periphery of the core assembly to isolate the noise generated by the core assembly.

[0005] In this technical solution, the housing primarily serves to protect internal components, provide an operating interface, and enhance the overall aesthetics. It provides installation space and support for the pencil sharpening mechanism and the core assembly. The pencil sharpening mechanism is one of the core components of the electric pencil sharpener, responsible for the actual pencil sharpening operation. The core assembly is the power source and control center of the electric pencil sharpener, specifically including but not limited to motors, gear transmission systems, and circuit boards. It provides power to the pencil sharpening mechanism and controls the start and stop of the pencil sharpening process. By placing a soundproof cover on the outer periphery of the core assembly, the cover can directly isolate the noise generated by the core assembly, effectively blocking the path of noise transmission from the core assembly to the outside. This significantly reduces the noise generated by the electric pencil sharpener during operation, thereby improving the overall user experience. On the other hand, the soundproof cover does not require large-scale adjustments to the overall structure of the electric pencil sharpener. Instead, it optimizes the existing structure, allowing the product to maintain its original functions and performance while adding sound insulation capabilities. The structure remains compact, making it easy to carry and use. The manufacturing cost of the soundproof cover is relatively low, and its installation process is relatively simple, without significantly increasing the product's production cost.

[0006] As an improvement, the mechanism assembly includes a bracket and a motor. The bracket is installed inside the housing, and the motor is mounted on the bracket. The bracket is fitted with a soundproof cover to enclose the motor within the soundproof cover. In this technical solution, the bracket is an important component of the mechanism assembly. It is installed inside the housing to ensure that the motor can be securely installed inside the electric pencil sharpener and remain stable during operation, reducing vibration. The bracket and the soundproof cover form a relatively enclosed space, allowing the motor to be contained within the soundproof cover. This helps reduce the transmission of motor noise to the external environment, improving sound insulation. The bracket also protects the motor from external dust, debris, and other interference to a certain extent, extending the motor's service life.

[0007] As an improvement, sound-absorbing cotton is installed on the soundproof cover. The sound-absorbing cotton works in conjunction with the soundproof cover to isolate noise. In this technical solution, the soundproof cover itself already has a certain sound insulation effect. The sound-absorbing cotton can work together with the soundproof cover to exert a joint sound insulation effect, further preventing the amount of noise from the inside of the soundproof cover to the outside, further reducing the noise generated by the electric pencil sharpener during operation, and improving the sound insulation effect of the electric pencil sharpener.

[0008] As an improvement, this application can provide various specific designs for sound-absorbing cotton, one of which is: the sound-absorbing cotton is a porous sponge structure, and the sound-absorbing cotton is used to absorb noise. In this technical solution, the sound-absorbing cotton adopts a porous sponge structure. When sound waves enter the porous sponge structure, the sound waves will undergo multiple reflections and frictions in the pores, thereby consuming the energy of the sound waves and achieving the effect of sound absorption. The sound-absorbing cotton is combined with the sound insulation function of the soundproof cover to form a comprehensive sound insulation system. The soundproof cover mainly reduces the transmission of noise through physical isolation, while the sound-absorbing cotton further reduces the intensity of noise by absorbing the overflowing noise. The porous sponge material has a relatively low cost and a long service life.

[0009] As an improvement, the second specific design of the sound-insulating cotton is as follows: the sound-insulating cotton has an aluminum foil structure and is used to reflect noise. In this technical solution, the sound-insulating cotton adopts an aluminum foil structure, which can effectively reflect high-frequency sound waves. Combined with the sound insulation function of the soundproof cover, it forms a comprehensive sound insulation system. The soundproof cover mainly reduces the transmission of noise through physical isolation, while the aluminum foil structure of the sound-insulating cotton further reduces the intensity of noise by reflecting sound waves. Aluminum foil material has a relatively low cost and a long service life.

[0010] As an improvement, the third specific design of the sound insulation cotton is as follows: the sound insulation cotton is a multi-layered sound insulation cotton composed of a porous sponge structure and an aluminum foil structure. In this technical solution, the porous sponge structure can effectively absorb overflowing noise, while the aluminum foil structure can effectively reflect high-frequency noise. The main function of the multi-layered sound insulation cotton is to absorb and reflect noise. Combined with the sound insulation function of the soundproof cover, it forms a comprehensive sound insulation system. This triple effect makes the sound insulation system significantly effective in reducing noise transmission, and can greatly reduce the noise generated by the electric pencil sharpener during operation.

[0011] As an improvement, the sound-insulating cotton is disposed on the outer wall and / or inner wall of the soundproof enclosure. In this technical solution, the sound-insulating cotton disposed on the outer wall of the soundproof enclosure can effectively block the path of noise propagation from the inside of the soundproof enclosure to the outside. The sound-insulating cotton disposed on the inner wall of the soundproof enclosure allows the sound-insulating cotton to be closer to the core components, effectively absorbing and reflecting the noise generated by the core components. The sound-insulating cotton can also be disposed on both the outer and inner walls of the soundproof enclosure, providing a more comprehensive sound insulation effect. The installation process of the sound-insulating cotton is relatively simple, usually only requiring it to be pasted or clipped to the inner and outer walls of the soundproof enclosure, without increasing the production complexity of the product or significantly increasing the production cost.

[0012] As an improvement, the bracket includes a mounting plate and connecting columns. The bracket is fitted onto the soundproof enclosure from top to bottom, the mounting plate abuts against the top of the soundproof enclosure from top to bottom, and the connecting columns are inserted into the soundproof enclosure. In this technical solution, the bracket includes a mounting plate for abutting against the top of the soundproof enclosure from top to bottom, ensuring tight contact between the bracket and the soundproof enclosure, providing stable support and connection. The bracket also includes connecting columns inserted into the soundproof enclosure, further enhancing the connection strength between the bracket and the soundproof enclosure. The bracket and the soundproof enclosure are connected by fitting together from top to bottom. This connection method allows the bracket to be firmly fixed inside the soundproof enclosure, allowing a relatively enclosed space to be formed inside the soundproof enclosure, further enhancing the sound insulation effect.

[0013] As an improvement, the connecting column is provided with a positioning protrusion, and the inner wall of the soundproof enclosure is provided with a positioning groove that matches the positioning protrusion. The bracket is fitted onto the soundproof enclosure so that the positioning protrusion is installed in the positioning groove. In this technical solution, the connecting column is provided with a positioning protrusion for cooperating with the positioning groove on the inner wall of the soundproof enclosure. By fitting the bracket onto the soundproof enclosure and inserting the connecting column into the soundproof enclosure, the positioning protrusion and positioning groove are matched, further enhancing the connection strength between the bracket and the soundproof enclosure. This ensures precise alignment and stable connection between the bracket and the soundproof enclosure, helping to reduce vibration and noise caused by inaccurate installation. The tight fit between the positioning protrusion and the positioning groove reduces the gap between the bracket and the soundproof enclosure, further reducing the possibility of noise leakage from the connection point.

[0014] As an improvement, a shock-absorbing pad is installed between the inner wall of the housing and the top of the bracket. In this technical solution, the shock-absorbing pad can directly contact the housing and the bracket, effectively absorbing and dispersing the vibrations generated during motor operation, reducing the impact of these vibrations on the housing and the bracket. This not only improves the operational stability of the electric pencil sharpener but also reduces noise caused by vibration, further enhancing the sound insulation effect. The shock-absorbing pad can be installed by pasting, snap-on, or other fixing methods to ensure that it will not loosen during use.

[0015] As an improvement, the top of the soundproof enclosure is provided with a mounting groove, and the vibration damping pad is installed in the mounting groove, with the surface of the vibration damping pad protruding relative to the top surface of the bracket; multiple vibration damping pads and mounting grooves are provided. In this technical solution, the size and shape of the mounting groove match the vibration damping pad, ensuring that the vibration damping pad can be securely installed within it. By installing the vibration damping pad in the specially designed mounting groove, the installation of the vibration damping pad is more stable and will not shift or fall off due to vibration. The surface of the vibration damping pad protrudes relative to the top surface of the bracket, allowing for better contact with the inner wall of the housing, providing more effective cushioning and vibration damping.

[0016] As an improvement, the height difference between the surface of the shock-absorbing pad and the top surface of the support is in the range of 0.2 mm to 0.3 mm. In this technical solution, the height difference between the surface of the shock-absorbing pad and the top surface of the support refers to the portion of the shock-absorbing pad that protrudes from the top surface of the support. By controlling the height difference within the range of 0.2 mm to 0.3 mm, it is ensured that the shock-absorbing pad provides effective cushioning without affecting the stability of the overall structure due to being too high, or losing its shock-absorbing effect due to being too low.

[0017] As an improvement, the housing is connected to a base plate, the soundproof cover has a through hole for the connecting post to pass through, and the base plate has mounting holes adapted to the connecting post. The connecting post passes through the through hole to connect with the mounting hole. In this technical solution, the housing is connected to a base plate, which provides a stable support platform for the entire electric pencil sharpener, ensuring that the electric pencil sharpener is not easily shaken during use. The base plate is provided with mounting holes to accommodate the connecting post, ensuring that the connecting post can be accurately inserted and fixed on the base plate. The soundproof cover is provided with through holes that allow the connecting post to pass through, ensuring that the connecting post can pass through smoothly and remain stable. This makes the bracket, soundproof cover, and base plate form an integral structure, enhancing the stability of the entire electric pencil sharpener. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an electric pencil sharpener according to this application.

[0019] Figure 2 This is an exploded structural diagram of an electric pencil sharpener according to this application.

[0020] Figure 3 This is a three-dimensional structural diagram of the support in this application.

[0021] Figure 4 This is a three-dimensional structural diagram of the soundproof enclosure and the motor in this application.

[0022] Figure 5 This is an exploded structural diagram of the shell and support in this application.

[0023] Figure 6 This is a schematic diagram of the exploded structure of the support and shock-absorbing pad in this application.

[0024] The figure shows: 1. Housing; 2. Mechanism assembly; 21. Bracket; 211. Mounting plate; 212. Connecting column; 213. Positioning protrusion; 214. Mounting groove; 22. Motor; 3. Soundproof cover; 31. Positioning groove; 32. Through hole; 4. Sound insulation cotton; 5. Base plate; 51. Mounting hole; 6. Shock-absorbing pad. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Example 1 like Figures 1 to 6As shown, this application discloses an electric pencil sharpener, including a housing 1, a sharpening mechanism, and a core assembly 2. Both the sharpening mechanism and the core assembly 2 are installed within the housing 1. The core assembly 2 drives the sharpening mechanism to sharpen pencils. A soundproof cover 3 is installed between the housing 1 and the core assembly 2, covering the outer periphery of the core assembly 2 to isolate noise generated by the core assembly 2. The housing 1 primarily serves to protect the internal components, provide an operating interface, and enhance the overall aesthetics, providing installation space and support for the sharpening mechanism and the core assembly 2. The sharpening mechanism is one of the core components of the electric pencil sharpener, responsible for the actual sharpening operation. The core assembly 2 is the power source and control center of the electric pencil sharpener, and may include, but is not limited to, a motor 22, a gear transmission system, and a circuit board, providing power to the sharpening mechanism. The electric pencil sharpener provides power and controls the start and stop of the sharpening process. By placing the soundproof cover 3 on the outer periphery of the core assembly 2, the soundproof cover 3 can directly isolate the noise generated by the core assembly 2, effectively blocking the path of noise transmission from the core assembly 2 to the outside. This significantly reduces the noise generated by the electric pencil sharpener during operation, thereby improving the overall user experience. On the other hand, the soundproof cover 3 does not require a large-scale adjustment to the overall structure of the electric pencil sharpener. Instead, it optimizes the existing structure, allowing the product to maintain its original functions and performance while adding sound insulation. The structure remains compact, making it easy to carry and use. The manufacturing cost of the soundproof cover 3 is relatively low, and its installation process is relatively simple, without significantly increasing the production cost of the product.

[0030] More specifically, such as Figures 2 to 4 As shown, the mechanism assembly 2 includes a bracket 21 and a motor 22. The bracket 21 is installed inside the housing 1, and the motor 22 is installed on the bracket 21. The bracket 21 is sleeved with the soundproof cover 3 so that the motor 22 is enclosed inside the soundproof cover 3. The bracket 21 is an important component of the mechanism assembly 2. It is installed inside the housing 1 to ensure that the motor 22 can be firmly installed inside the electric pencil sharpener and remain stable during operation, reducing vibration. The bracket 21 and the soundproof cover 3 can form a relatively enclosed space, and the motor 22 can be enclosed inside the soundproof cover 3, which helps to reduce the transmission of motor noise to the external environment and improve the sound insulation effect. The bracket 21 can also protect the motor 22 from interference from external dust, debris, etc. to a certain extent, extending the service life of the motor 22.

[0031] More specifically, such as Figure 2 As shown, sound insulation cotton 4 is installed on the sound insulation cover 3. The sound insulation cotton 4 is used to work with the sound insulation cover 3 to isolate noise. The sound insulation cover 3 itself already has a certain sound insulation effect. The sound insulation cotton 4 can work together with the sound insulation cover 3 to exert the sound insulation effect, which can further prevent the amount of noise from the inside of the sound insulation cover 3 to the outside, further reduce the noise generated by the electric pencil sharpener during operation, and improve the sound insulation effect of the electric pencil sharpener.

[0032] More specifically, such as Figure 2 As shown, the sound insulation cotton 4 is disposed on the outer wall and / or inner wall of the soundproof cover 3. When disposed on the outer wall of the soundproof cover 3, the sound insulation cotton 4 can effectively block the path of noise propagation from the inside of the soundproof cover 3 to the outside. When disposed on the inner wall of the soundproof cover 3, the sound insulation cotton 4 is closer to the core component 2, which can effectively absorb and reflect the noise generated by the core component 2. The sound insulation cotton 4 can also be disposed on both the outer wall and the inner wall of the soundproof cover 3 at the same time, which can provide a more comprehensive sound insulation effect. The installation process of the sound insulation cotton 4 is relatively simple. Usually, it only needs to be pasted or clipped to the inner and outer walls of the soundproof cover 3, which will not increase the production complexity of the product or significantly increase the production cost.

[0033] More specifically, such as Figures 2 to 4 As shown, the bracket 21 includes a mounting plate 211 and a connecting column 212. The bracket 21 is fitted together with the soundproof cover 3. The mounting plate 211 abuts against the top of the soundproof cover 3. The connecting column 212 is inserted into the soundproof cover 3. The bracket 21 includes a mounting plate 211 for abutting against the top of the soundproof cover 3, ensuring close contact between the bracket 21 and the soundproof cover 3, providing stable support and connection. The bracket 21 also includes connecting columns 212, which are inserted into the soundproof cover 3, further enhancing the connection strength between the bracket 21 and the soundproof cover 3. The bracket 21 and the soundproof cover 3 are connected by fitting together. This connection method allows the bracket 21 to be firmly fixed inside the soundproof cover 3, allowing a relatively enclosed space to be formed inside the soundproof cover 3, further enhancing the sound insulation effect.

[0034] More specifically, such as Figure 3 and Figure 4 As shown, the connecting column 212 is provided with a positioning protrusion 213, and the inner wall of the soundproof cover 3 is provided with a positioning groove 31 that matches the positioning protrusion 213. The bracket 21 and the soundproof cover 3 are fitted together so that the positioning protrusion 213 is installed in the positioning groove 31. The connecting column 212 is provided with a positioning protrusion 213 for cooperating with the positioning groove 31 on the inner wall of the soundproof cover 3. By fitting the bracket 21 and the soundproof cover 3 together, the connecting column 212 is inserted into the soundproof cover 3, so that the positioning protrusion 213 cooperates with the positioning groove 31, which further enhances the connection strength between the bracket 21 and the soundproof cover 3, ensuring the precise alignment and stable connection between the bracket 21 and the soundproof cover 3. This helps to reduce vibration and noise caused by inaccurate installation. The tight cooperation between the positioning protrusion 213 and the positioning groove 31 reduces the gap between the bracket 21 and the soundproof cover 3, further reducing the possibility of noise leakage from the connection.

[0035] More specifically, such as Figures 2 to 4As shown, the housing 1 is connected to the base plate 5, the soundproof cover 3 is provided with a through hole 32 for the connecting post 212 to pass through, the base plate 5 is provided with a mounting hole 51 adapted to the connecting post 212, the connecting post 212 passes through the through hole 32 to connect with the mounting hole 51, the housing 1 is connected to the base plate 5, the base plate 5 provides a stable support platform for the entire electric pencil sharpener to ensure that the electric pencil sharpener is not easy to shake during use, the base plate 5 is provided with a mounting hole 51 for accommodating the connecting post 212 to ensure that the connecting post 212 can be accurately inserted and fixed on the base plate 5, the soundproof cover 3 is provided with a through hole 32 that allows the connecting post 212 to pass through the soundproof cover 3 to ensure that the connecting post 212 can pass through smoothly and remain stable, so that the bracket 21, the soundproof cover 3 and the base plate 5 form an integral structure, which enhances the stability of the entire electric pencil sharpener.

[0036] Example 2 like Figure 2 As shown, this embodiment provides an electric pencil sharpener based on Embodiment 1, with the same structure as Embodiment 1. The sound-insulating cotton 4 is a porous sponge structure used to absorb noise. The porous sponge structure allows sound waves to be reflected and rubbed multiple times within the pores when they enter, thus consuming the energy of the sound waves and achieving sound absorption. The sound-insulating cotton 4, combined with the soundproof cover 3, forms a comprehensive soundproofing system. The soundproof cover 3 primarily reduces noise propagation through physical isolation, while the sound-insulating cotton 4 further reduces noise intensity by absorbing overflowing noise. The porous sponge material has a relatively low cost and a long service life.

[0037] Example 3 like Figure 2 As shown, this embodiment provides an electric pencil sharpener based on embodiment 1, with the same structure as embodiment 1. The sound insulation cotton 4 is an aluminum foil structure. The sound insulation cotton 4 is used to reflect noise. The sound insulation cotton 4 adopts an aluminum foil structure, which can effectively reflect high-frequency sound waves. Combined with the sound insulation function of the sound insulation cover 3, it forms a comprehensive sound insulation system. The sound insulation cover 3 mainly reduces the transmission of noise through physical isolation, while the aluminum foil structure of the sound insulation cotton 4 further reduces the intensity of noise by reflecting sound waves. The aluminum foil material has a relatively low cost and a long service life.

[0038] Example 4 like Figure 2As shown, this embodiment provides an electric pencil sharpener based on Embodiment 1, with the same structure as Embodiment 1. The sound insulation cotton 4 is a multi-layered sound insulation cotton 4 consisting of a porous sponge structure and an aluminum foil structure. The porous sponge structure can effectively absorb overflow noise, while the aluminum foil structure can effectively reflect high-frequency noise. The main function of the multi-layered sound insulation cotton 4 is to absorb and reflect noise. Combined with the sound insulation function of the soundproof cover 3, it forms a comprehensive sound insulation system. The triple effect makes the sound insulation system have a significant effect in reducing noise transmission, which can greatly reduce the noise generated by the electric pencil sharpener during operation.

[0039] Example 5 like Figure 5 and Figure 6 As shown, this embodiment provides an electric pencil sharpener based on any one of embodiments 1-4. Its structure is the same as the referenced embodiments. A shock-absorbing pad 6 is installed between the inner wall of the housing 1 and the top of the bracket 21. The shock-absorbing pad 6 can directly contact the housing 1 and the bracket 21. The shock-absorbing pad 6 can effectively absorb and disperse the vibration generated by the motor 22 during operation, reducing the impact of these vibrations on the housing 1 and the bracket 21. This not only improves the operational stability of the electric pencil sharpener but also reduces the noise caused by vibration, further enhancing the sound insulation effect. The shock-absorbing pad 6 can be installed by pasting, snapping, or other fixing methods to ensure that it will not loosen during use.

[0040] More specifically, such as Figure 5 and Figure 6 As shown, the top of the bracket 21 is provided with a mounting groove 214, and the shock-absorbing pad 6 is installed in the mounting groove 214. The surface of the shock-absorbing pad 6 protrudes relative to the top surface of the bracket 21. The size and shape of the mounting groove 214 match the shock-absorbing pad, ensuring that the shock-absorbing pad 6 can be securely installed in it. By installing the shock-absorbing pad 6 in the specially designed mounting groove 214, the installation of the shock-absorbing pad 6 is more stable and will not shift or fall off due to vibration. The surface of the shock-absorbing pad 6 protrudes relative to the top surface of the bracket 21, which can better contact the housing 1 and the bracket 21. Multiple shock-absorbing pads 6 and mounting grooves 214 are provided to provide more effective cushioning and shock absorption.

[0041] More specifically, such as Figure 5 and Figure 6 As shown, the height difference between the surface of the shock-absorbing pad 6 and the top surface of the bracket 21 is 0.2 mm to 0.3 mm. The height difference between the surface of the shock-absorbing pad 6 and the top surface of the bracket 21 refers to the part of the shock-absorbing pad 6 that protrudes from the top surface of the bracket 21. By controlling the height difference within the range of 0.2 mm to 0.3 mm, it is ensured that the shock-absorbing pad 6 provides effective cushioning without affecting the stability of the overall structure due to being too high, or losing its shock-absorbing effect due to being too low.

[0042] 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. An electric pencil sharpener, comprising a housing (1), a sharpening mechanism, and a core assembly (2), wherein the sharpening mechanism and the core assembly (2) are both installed within the housing (1), and the core assembly (2) is used to drive the sharpening mechanism to sharpen pencils, characterized in that, A soundproof cover (3) is installed between the housing (1) and the movement assembly (2). The soundproof cover (3) is placed on the outer periphery of the movement assembly (2) to isolate the noise generated by the movement assembly (2).

2. The electric pencil sharpener according to claim 1, characterized in that, The mechanism assembly (2) includes a bracket (21) and a motor (22). The bracket (21) is installed inside the housing (1), and the motor (22) is installed on the bracket (21). The bracket (21) is sleeved with a soundproof cover (3) so that the motor (22) is enclosed inside the soundproof cover (3).

3. The electric pencil sharpener according to claim 1, characterized in that, The soundproof cover (3) is equipped with soundproof cotton (4), which is used to cooperate with the soundproof cover (3) to isolate noise.

4. An electric pencil sharpener according to claim 3, characterized in that, The sound insulation cotton (4) is a porous sponge structure, and the sound insulation cotton (4) is used to absorb noise.

5. An electric pencil sharpener according to claim 3, characterized in that, The sound insulation cotton (4) is an aluminum foil structure and is used to reflect noise.

6. An electric pencil sharpener according to claim 3, characterized in that, The sound insulation cotton (4) is a multi-layer sound insulation cotton (4) with a porous sponge structure and an aluminum foil structure connected together.

7. An electric pencil sharpener according to claim 3, characterized in that, The sound insulation cotton (4) is disposed on the outer wall and / or inner wall of the sound insulation cover (3).

8. An electric pencil sharpener according to claim 2, characterized in that, The bracket (21) includes a mounting plate (211) and a connecting column (212). The bracket (21) is fitted together with the soundproof cover (3) from top to bottom. The mounting plate (211) abuts against the top of the soundproof cover (3) from top to bottom. The connecting column (212) is inserted into the soundproof cover (3).

9. An electric pencil sharpener according to claim 8, characterized in that, The connecting column (212) is provided with a positioning protrusion (213), and the inner wall of the soundproof cover (3) is provided with a positioning groove (31) that matches the positioning protrusion (213). The bracket (21) and the soundproof cover (3) are fitted together so that the positioning protrusion (213) is installed in the positioning groove (31).

10. An electric pencil sharpener according to claim 2, characterized in that, A shock-absorbing pad (6) is installed between the inner wall of the housing (1) and the top of the bracket (21).

11. An electric pencil sharpener according to claim 10, characterized in that, The bracket (21) has a mounting groove (214) on its top, and the shock-absorbing pad (6) is installed in the mounting groove (214), and the surface of the shock-absorbing pad (6) protrudes relative to the top surface of the bracket (21); multiple shock-absorbing pads (6) and mounting grooves (214) are provided.

12. An electric pencil sharpener according to claim 11, characterized in that, The height difference between the surface of the shock-absorbing pad (6) and the top surface of the bracket (21) ranges from 0.2 mm to 0.3 mm.

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