Pencil sharpener

Abstract

The pencil sharpener comprises a first shell and a second shell, the first shell and the second shell are detachably connected, a pencil inlet allowing a pencil to be vertically inserted is formed in the first shell, a mounting cavity is formed between the first shell and the second shell, and the first shell and the second shell are detachably connected. The pencil sharpener is characterized in that a pencil feeding assembly, a transmission assembly and a knife rest assembly are sequentially installed in the installation cavity in the vertical direction, the pencil feeding assembly is connected with the knife rest assembly through the transmission assembly, and the transmission assembly is detachably connected with the knife rest assembly. And a user can independently disassemble the knife rest assembly, so that the knife rest assembly is convenient to maintain and clean, and the use convenience and safety are improved.

Description

Technical Field

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

[0002] Traditional pencil sharpening involves manually sharpening pencils with a knife. This method is not only inefficient and prone to causing finger injuries, but also results in inconsistent pencil tips. Pencil sharpeners have solved these problems effectively. They can quickly and safely sharpen pencils to the desired tip shape, making them a common school and office accessory. Based on the direction of pencil insertion, pencil sharpeners can be divided into horizontal-insertion (pencil inserted horizontally) and vertical-insertion (pencil inserted vertically) sharpeners. With horizontal-insertion sharpeners, wood shavings can easily enter the gear meshing of the transmission mechanism, affecting transmission efficiency and the lifespan of the device. The core structure of a vertical-insertion sharpener includes the sharpener housing, pencil insertion assembly, blade holder assembly, and handle assembly. The pencil is inserted vertically from the top, and the drive gears simultaneously power both the pencil insertion assembly and the blade holder assembly. The vertical pen-feeding pen sharpener has its pen feed direction perpendicular to the bottom surface of the sharpener. By optimizing the design of the pen feed direction and transmission mechanism, it avoids wood chips generated during the sharpening process from entering the gear meshing area of ​​the transmission mechanism, thereby better ensuring the smooth operation of the transmission mechanism, ensuring the normal operation of the pen sharpener, and improving the stability and service life of the equipment. For example, the utility model patent with authorization announcement number CN212124702U discloses a vertical pen sharpener, including a sharpener body, a pen feeding assembly, a blade holder assembly, a handle assembly, and a chip box. The top of the sharpener body has a pen insertion hole for vertical pen insertion. The sharpener body includes a first housing and a second housing that are fastened together. The first housing and the second housing fasten together to form a mounting cavity suitable for installing the pen feeding assembly and the blade holder assembly. The pen feeding assembly is fixed above the blade holder assembly by a first mounting structure. In this technical solution, the blade holder assembly and the pen feeding assembly are fixedly connected by bolts to form a relatively tight whole. Once the blade holder assembly malfunctions or needs cleaning, such as when the pen lead is too short or a foreign object falls in, the pen feeding assembly must be disassembled first before the blade holder assembly can be accessed. This disassembly process is relatively complicated and increases the difficulty of maintenance. The blade holder assembly is difficult to disassemble separately, and the user cannot directly access the inside of the blade holder for cleaning, which affects the normal operation of the sharpener and may even damage the blade holder assembly. At the same time, the blade of the blade holder assembly is easily exposed during disassembly, posing a safety hazard. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a pencil sharpener in which the transmission component and the blade holder component are detachably connected, allowing the user to disassemble the blade holder component separately, thereby facilitating the maintenance and cleaning of the blade holder component and improving ease of use and safety.

[0004] This application provides a pencil sharpener, including a first housing and a second housing, which are detachably connected. The first housing is provided with a pencil inlet for vertical insertion of a pencil. An installation cavity is formed between the first housing and the second housing. A pencil feeding assembly, a transmission assembly, and a blade holder assembly are sequentially installed in the installation cavity along the vertical direction. The pencil feeding assembly and the blade holder assembly are connected by the transmission assembly, which is detachably connected to the blade holder assembly.

[0005] In this technical solution, the first and second housings are detachably connected, making the entire pencil sharpener structure easy to disassemble and assemble. Users can easily maintain, clean, or replace internal components, improving the maintainability and operability of the product. The first housing is equipped with a pencil inlet for vertical insertion of pencils. The vertical pencil inlet design ensures smooth operation of the transmission components, improving the stability and service life of the pencil sharpener. The pencil inlet component, transmission component, and blade holder component are installed vertically in sequence within the mounting cavity, which helps optimize internal space and makes the overall structure of the pencil sharpener more compact and reasonable. The detachable connection between the transmission component and the blade holder component allows the blade holder component to be disassembled independently. When a fault occurs inside the blade holder component or cleaning is required, such as when a pencil lead is too short or a foreign object falls into the blade holder component, it is not necessary to disassemble the pencil inlet component first. The blade holder component can be disassembled directly, allowing for direct cleaning and maintenance of its internal components. This greatly simplifies the maintenance process, reduces maintenance difficulty, and improves the user experience.

[0006] As an improvement, the transmission assembly includes a transmission turntable and a connecting seat. The transmission assembly connects the pen feed assembly and the tool holder assembly via the transmission turntable, and the transmission assembly is detachably connected to the tool holder assembly via the connecting seat. In this technical solution, the transmission turntable is the core component of the transmission assembly. The transmission turntable engages with the pen feed assembly to transmit power to both the pen feed assembly and the tool holder assembly. The connecting seat is the connecting component between the transmission assembly and the tool holder assembly. It is connected to the tool holder assembly via a detachable connection, allowing the tool holder assembly to be disassembled independently for easy maintenance and cleaning. The detachable connection between the connecting seat and the tool holder assembly can be achieved through a screw-on connection, a threaded connection, or other quick-disassembly structures. This ensures both a secure connection and user convenience. When maintaining or cleaning the tool holder assembly, users do not need to disassemble the pen feed assembly and the transmission assembly; they only need to detach the tool holder assembly from the connecting seat, reducing maintenance time and difficulty while optimizing the user experience.

[0007] As an improvement, the tool holder assembly includes a mounting bracket and a hobbing mechanism, the hobbing mechanism being mounted on the mounting bracket; the outer wall of the mounting bracket is provided with a latch, and the inner wall of the connecting seat is provided with a latching position adapted to the latch; the latch and the latching position are connected to lock the transmission assembly and the tool holder assembly in the vertical direction, and the latch and the latching position are disengaged to unlock the transmission assembly and the tool holder assembly in the vertical direction. In this technical solution, the blade holder assembly consists of a mounting bracket and a rolling cutter mechanism. A blade holder gear is mounted on the rolling cutter mechanism, and an internal gear ring meshes with the blade holder gear on the inner wall of the mounting bracket. The mounting bracket serves as a support structure, providing a stable mounting base for the rolling cutter mechanism and ensuring its smooth and efficient operation during pencil sharpening. A locking mechanism is installed on the mounting bracket, and a locking position is installed on the connecting seat. The engagement of the locking mechanism and the locking position enables the vertical connection, locking, and unlocking of the transmission component and the blade holder assembly. This locking and locking structure allows for quick installation and disassembly, allowing users to connect or separate the blade holder assembly from the transmission component with simple operations, without the need for tools, thus improving the user experience. The connection of the locking mechanism and the locking position ensures a secure connection between the blade holder assembly and the transmission component during operation, preventing the risk of loosening or falling off during pencil sharpening. Furthermore, if a malfunction occurs inside the blade holder assembly (such as a short lead or foreign objects falling in), the user can quickly unlock the locking mechanism to remove the blade holder assembly from the transmission component for direct cleaning or repair, making it more convenient and safer to use.

[0008] As an improvement, the connecting seat and the mounting bracket are inserted vertically, and the mounting bracket can rotate circumferentially relative to the connecting seat. The mounting bracket's circumferential rotation allows the latch to engage or disengage from the buckle. In this technical solution, the connecting seat and the mounting bracket are inserted vertically, making the assembly and disassembly process more intuitive and simple. Furthermore, the mounting bracket can rotate circumferentially relative to the connecting seat; the user only needs to insert the mounting bracket vertically into the connecting seat to complete the initial connection, and then rotate the mounting bracket to engage or disengage the latch, simplifying the installation and disassembly steps.

[0009] As an improvement, the inner wall of the connecting seat is provided with an opening adapted to the latch. The latch passes through the opening vertically to rotatably engage with the latching position. In this technical solution, the inner wall of the connecting seat is provided with an opening for the latch to pass through. The latch passes through the opening vertically and engages with the latching position through circumferential rotation. This avoids the latch directly disengaging from the latching position vertically, making the connection between the connecting seat and the mounting bracket more compact and reducing the risk of loosening due to vibration or external force. Compared with elastic locking and unlocking methods, this is more reliable and requires less effort to assemble and disassemble.

[0010] As an improvement, the mounting bracket is equipped with a mounting buckle adapted to the hobbing mechanism. The bottom of the hobbing mechanism is connected to the mounting buckle, and the hobbing mechanism is constrained on the mounting bracket by the mounting buckle. In this technical solution, the mounting buckle on the mounting bracket is mainly used to install and limit the hobbing mechanism. The bottom of the hobbing mechanism is directly connected to the mounting buckle. The specific connection method includes snap-fit, thread, or other mechanical connection methods to ensure the stability of the hobbing mechanism on the mounting bracket and prevent the hobbing mechanism from detaching from the mounting bracket after the tool holder assembly is disassembled. During the disassembly of the tool holder assembly and the transmission assembly, the mounting bracket and the hobbing mechanism remain connected through the mounting buckle, so that the user will not directly contact the blade part of the hobbing mechanism, effectively avoiding the risk of direct contact between the hand and the blade. After the tool holder assembly is disassembled, the hobbing mechanism is still fixed on the mounting bracket by the mounting buckle, and the user can safely place or handle the entire assembly without worrying about the safety hazards caused by exposed blades.

[0011] As an improvement, the inner wall of the first housing is provided with a first mounting plate, the inner wall of the second housing is provided with a second mounting plate, and the outer wall of the connecting seat is provided with a first mounting groove and a second mounting groove. The first mounting groove is connected to the first mounting plate, and the second mounting groove is connected to the second mounting plate, so that the connecting seat is positioned and installed within the mounting cavity. In this technical solution, the connecting seat is connected to the first mounting plate inside the first housing through the first mounting groove, and the connecting seat is connected to the second mounting plate inside the second housing through the second mounting groove. This allows the connecting seat to be stably installed within the mounting cavity formed by the first and second housings, ensuring that the position of the connecting seat within the mounting cavity is fixed, preventing the connecting seat from shaking in the horizontal direction, and preventing it from shaking or shifting during operation. This improves the installation stability of the connecting seat, thereby ensuring the operational reliability of the entire pencil sharpener.

[0012] As an improvement, the first mounting groove is an arc-shaped groove, and the surface of the first mounting plate that mates with the first mounting groove is arc-shaped. A third mounting plate adapted to the transmission turntable is provided inside the first housing. The third mounting plate and the first mounting plate are arranged vertically, and the third mounting plate mates with the first mounting plate to install the limiting transmission component in the vertical direction. In this technical solution, the first mounting groove is designed as an arc-shaped groove, and the surface of the first mounting plate that mates with the first mounting groove is also arc-shaped. The contact area between the first mounting plate and the first mounting groove is larger, making the connection structure between the connecting seat and the first housing more stable and reliable, and providing better support for the connecting seat from the first housing. A third mounting plate is provided inside the first housing to install the transmission turntable and to limit its vertical movement. The third mounting plate and the first mounting plate are arranged vertically, and their mates allow the limiting transmission component to be installed vertically, ensuring stable clamping of the transmission component in the vertical direction, reducing vibration, optimizing space utilization, and facilitating assembly and maintenance.

[0013] As an improvement, the mounting cavity is provided with a mounting part adapted to the tool holder assembly. The tool holder assembly is connected to the mounting part laterally, and the mounting part is used to position and install the tool holder assembly. The connecting seat abuts against the mounting part vertically, and the mounting part is used to support and limit the connecting seat. In this technical solution, by setting the mounting part in the mounting cavity, the shape and size of the mounting part are adapted to the shape and size of the tool holder assembly, ensuring that the tool holder assembly can be accurately installed in the predetermined position. Setting the mounting part to be connected to the tool holder assembly laterally provides stable support and positioning for the tool holder assembly, preventing lateral displacement of the tool holder assembly during operation. The mounting part is not only used to position and install the tool holder assembly, but also to support and limit the connecting seat. Setting the connecting seat to abut against the mounting part vertically provides stable support for the connecting seat in the vertical direction. At the same time, the limiting effect of the mounting part prevents the connecting seat from shaking or shifting in the horizontal direction, improving the stability and reliability of use.

[0014] As an improvement, the first housing includes a front housing and a rear housing, which are detachably connected. The pen inlet is located on the top of the rear housing, and the rear housing is detachably connected to the second housing in the vertical direction. A drive assembly is installed on the second housing. The drive assembly includes a rocker arm and a drive turntable. The rocker arm is connected to the drive turntable, and the drive turntable is meshed with a transmission turntable. The rocker arm is subjected to force to drive the transmission turntable to rotate through the drive turntable. In this technical solution, the first housing consists of a front housing and a rear housing, which are detachably connected. The entire pencil sharpener housing is composed of the front housing, the rear housing, and the second housing, all of which are detachable. The split design facilitates the cleaning or replacement of internal components. The rear housing and the second housing are detachably connected in the vertical direction, allowing users to quickly disassemble the entire housing structure. A drive assembly is installed on the second housing, including a rocker arm and a drive turntable connected to each other. The rocker arm drives the drive turntable to rotate. The drive turntable and the transmission turntable are meshed together, which can efficiently transmit the rotational force of the rocker arm to the transmission turntable, thereby driving the pencil feeding assembly and the blade holder assembly. The meshing connection between the drive turntable and the transmission turntable ensures the stability and reliability of the transmission. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a pencil sharpener according to this application.

[0016] Figure 2 This is an exploded view of a pencil sharpener according to this application.

[0017] Figure 3 This is an exploded view of the connector and tool holder assembly in this application.

[0018] Figure 4This is a three-dimensional structural diagram of the front housing and transmission assembly in this application.

[0019] Figure 5 This is a three-dimensional structural diagram of the second shell in this application.

[0020] Figure 6 This is a cross-sectional structural diagram of a pencil sharpener according to this application.

[0021] The figure shows: 1. First housing; 11. Pen inlet; 12. First mounting plate; 13. Third mounting plate; 14. Front housing; 15. Rear housing; 2. Second housing; 21. Second mounting plate; 22. Mounting part; 3. Pen feeding assembly; 4. Transmission assembly; 41. Transmission turntable; 42. Connecting seat; 421. Buckle; 422. Opening; 423. First mounting slot; 424. Second mounting slot; 5. Tool holder assembly; 51. Mounting bracket; 511. Internal gear ring; 512. Lock; 52. Hobbing mechanism; 521. Tool holder gear; 53. Mounting buckle; 6. Drive assembly; 61. Rocker arm; 62. Drive turntable; 7. Chip box. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] like Figures 1 to 6 As shown, this application discloses a pencil sharpener, including a first housing 1 and a second housing 2. The first housing 1 and the second housing 2 are detachably connected, making the entire pencil sharpener structure easy to disassemble and assemble. Users can easily maintain, clean or replace the internal components, improving the maintainability and operability of the product. The first housing 1 is provided with a pencil inlet 11 for vertical insertion of pencils. The vertical pencil insertion design ensures the smooth operation of the transmission component 4, improving the stability and service life of the pencil sharpener. An installation cavity is formed between the first housing 1 and the second housing 2. The pencil inlet component 3, the transmission component 4 and the blade holder component 5 are sequentially installed in the vertical direction in the installation cavity. The pencil inlet component 3 and the blade holder component 5 are connected by the transmission component 4. The vertical sequential installation of the pencil inlet component 3, the transmission component 4 and the blade holder component 5 in the installation cavity helps to optimize the internal space, making the overall structure of the pencil sharpener more compact and reasonable.

[0027] like Figure 2 and Figure 3 As shown, the transmission assembly 4 and the tool holder assembly 5 are detachably connected, allowing the tool holder assembly 5 to be disassembled independently. When a fault occurs inside the tool holder assembly 5 or needs cleaning, such as when the pen lead is too short or a foreign object falls into the tool holder assembly 5, there is no need to disassemble the pen feeding assembly first. The tool holder assembly 5 can be disassembled directly, thus enabling direct cleaning and maintenance of the inside of the tool holder assembly 5. This greatly simplifies the maintenance process, reduces the difficulty of maintenance, and improves the user experience.

[0028] More specifically, such as Figure 2 and Figure 6As shown, the transmission assembly 4 includes a transmission turntable 41 and a connecting seat 42. The transmission assembly 4 uses the transmission turntable 41 to drive the pen feed assembly 3 and the tool holder assembly 5. The transmission assembly 4 is detachably connected to the tool holder assembly 5 via the connecting seat 42. The transmission turntable 41 is the core component of the transmission assembly 4. The transmission turntable 41 engages with the pen feed assembly 3 to transmit power to the pen feed assembly 3 and the tool holder assembly 5. The connecting seat 42 is the connecting component between the transmission assembly 4 and the tool holder assembly 5. It is connected to the tool holder assembly 5 in a detachable manner, allowing the tool holder assembly 5 to be disassembled independently for easy maintenance and cleaning. The detachable connection between the connecting seat 42 and the tool holder assembly 5 can be achieved by using a screw-on connection, a threaded connection, or other quick-disassembly structures. This ensures both the strength of the connection and the convenience of user operation. When maintaining or cleaning the tool holder assembly 5, the user does not need to disassemble the pen feed assembly 3 and the transmission assembly 4. They only need to detach the tool holder assembly 5 from the connecting seat 42, reducing maintenance time and difficulty, and optimizing the user experience.

[0029] More specifically, such as Figure 2 and Figure 3 As shown, the tool holder assembly 5 includes a mounting frame 51 and a hobbing mechanism 52. The hobbing mechanism 52 is mounted on the mounting frame 51. The tool holder assembly 5 consists of the mounting frame 51 and the hobbing mechanism 52. A tool holder gear 521 is mounted on the hobbing mechanism 52. An internal gear ring 511 that meshes with the tool holder gear 521 is provided on the inner wall of the mounting frame 51. The mounting frame 51 serves as a support structure, providing a stable mounting base for the hobbing mechanism 52 and ensuring that the hobbing mechanism 52 can work smoothly and efficiently during the pencil sharpening process.

[0030] More specifically, such as Figure 3 As shown, the outer wall of the mounting bracket 51 is provided with a latch 512, and the inner wall of the connecting seat 42 is provided with a latch 421 that matches the latch 512. The latch 512 connects with the latch 421 to lock the transmission assembly 4 and the tool holder assembly 5 in the vertical direction. The latch 512 disengages from the latch 421 to unlock the transmission assembly 4 and the tool holder assembly 5 in the vertical direction. The cooperation between the latch 512 and the latch 421 realizes the vertical connection locking and unlocking of the transmission assembly 4 and the tool holder assembly 5. The cooperation structure of the latch 512 and the latch 421 has the characteristics of quick installation and disassembly. Users can... The simple operation allows for the connection or separation of the tool holder assembly 5 and the transmission assembly 4 without the need for tools, improving the user experience. The connection between the latch 512 and the latch 421 ensures a secure connection between the tool holder assembly 5 and the transmission assembly 4 during operation, preventing the risk of the tool holder assembly 5 loosening or falling off during pencil sharpening. At the same time, if a malfunction occurs inside the tool holder assembly 5, such as a short pencil lead or foreign objects falling in, the user can quickly unlock the latch 512 to remove the tool holder assembly 5 from the transmission assembly 4 for direct cleaning or repair, making it more convenient and safer to use.

[0031] More specifically, such as Figure 2 and Figure 3 As shown, the connecting seat 42 and the mounting bracket 51 are inserted vertically. The mounting bracket 51 can rotate circumferentially relative to the connecting seat 42. By rotating the mounting bracket 51 circumferentially, the latch 512 can be connected or disengaged from the buckle 421. The connecting seat 42 and the mounting bracket 51 adopt a vertical insertion method, making the assembly and disassembly process more intuitive and simple. Furthermore, the mounting bracket 51 can rotate circumferentially relative to the connecting seat 42. Users only need to insert the mounting bracket 51 vertically into the connecting seat 42 to complete the initial connection. Then, by rotating the mounting bracket 51, the latch 512 can be connected or disengaged from the buckle 421, simplifying the installation and disassembly steps.

[0032] More specifically, such as Figure 3 As shown, the inner wall of the connecting seat 42 is provided with an opening 422 adapted to the latch 512. The latch 512 passes through the opening 422 in the vertical direction to rotate and engage with the latch 421. The inner wall of the connecting seat 42 is provided with an opening 422 for the latch 512 to pass through. The latch 512 passes through the opening 422 in the vertical direction and engages with the latch 421 by circumferential rotation. This can prevent the latch 512 from directly disengaging from the latch 421 in the vertical direction, making the connection between the connecting seat 42 and the mounting bracket 51 more compact and reducing the risk of loosening due to vibration or external force. Compared with the elastic locking and unlocking method, it is more reliable and easier to assemble and disassemble.

[0033] More specifically, such as Figure 3 and Figure 6 As shown, the mounting bracket 51 is provided with a mounting buckle 53 adapted to the hobbing mechanism 52. The bottom of the hobbing mechanism 52 is connected to the mounting buckle 53. The hobbing mechanism 52 is limited to the mounting bracket 51 by the mounting buckle 53. The mounting buckle 53 on the mounting bracket 51 is mainly used to install and limit the hobbing mechanism 52. The bottom of the hobbing mechanism 52 is directly connected to the mounting buckle 53. The specific connection method includes snap-fit, thread or other mechanical connection method to ensure the stability of the hobbing mechanism 52 on the mounting bracket 51 and prevent the hobbing mechanism 52 from detaching from the mounting bracket 51 after the tool holder assembly 5 is disassembled. During the process, the mounting bracket 51 and the hobbing mechanism 52 are connected by the mounting buckle 53, so that the user will not directly contact the blade part of the hobbing mechanism 52, effectively avoiding the risk of direct contact between the hand and the blade. After the blade holder assembly 5 is disassembled, the hobbing mechanism 52 is still fixed on the mounting bracket 51 by the mounting buckle 53. The user can safely place or handle the entire assembly without worrying about the safety hazards caused by the exposed blade. Preferably, the bottom wall of the hobbing mechanism 52 is provided with a protruding structure. The hobbing mechanism 52 is tightly fitted with the mounting buckle 53 through the protruding structure, thereby realizing the installation limit of the hobbing mechanism 52. The structure is simple and reliable.

[0034] More specifically, such as Figures 3 to 6 As shown, the inner wall of the first housing 1 is provided with a first mounting plate 12, the inner wall of the second housing 2 is provided with a second mounting plate 21, and the outer wall of the connecting seat 42 is provided with a first mounting groove 423 and a second mounting groove 424. The first mounting groove 423 is connected to the first mounting plate 12, and the second mounting groove 424 is connected to the second mounting plate 21, so that the connecting seat 42 is limited and installed in the mounting cavity. The connecting seat 42 is connected to the first mounting plate 12 in the first housing 1 through the first mounting groove 423, and the connecting seat 42 is connected to the second mounting plate 21 in the second housing 2 through the second mounting groove 424. This allows the connecting seat 42 to be stably installed in the mounting cavity formed by the first housing 1 and the second housing 2, and ensures that the position of the connecting seat 42 in the mounting cavity is fixed, preventing the connecting seat 42 from shaking in the horizontal direction, preventing it from shaking or shifting during operation, improving the installation stability of the connecting seat 42, and thus ensuring the operational reliability of the entire pencil sharpener.

[0035] More specifically, such as Figure 3 and Figure 4 As shown, the first mounting groove 423 is an arc-shaped groove, and the surface of the first mounting plate 12 that mates with the first mounting groove 423 is arc-shaped. The contact area between the first mounting plate 12 and the first mounting groove 423 is larger, making the connection structure between the connecting seat 42 and the first housing 1 more stable and reliable, and the first housing 1 provides better support for the connecting seat 42.

[0036] More specifically, such as Figure 3 and Figure 4 As shown, a third mounting plate 13 adapted to the transmission turntable 41 is provided inside the first housing 1. The third mounting plate 13 and the first mounting plate 12 are distributed vertically. The third mounting plate 13 and the first mounting plate 12 cooperate to install the limiting transmission component 4 in the vertical direction. The third mounting plate 13 is provided inside the second housing 2. The transmission turntable 41 is installed through the third mounting plate 13 and the transmission turntable 41 is limited in the vertical direction. The third mounting plate 13 and the first mounting plate 12 are distributed vertically. The two cooperate to install the limiting transmission component 4 in the vertical direction, so that the transmission component 4 is stably clamped in the vertical direction, reducing the impact of vibration, optimizing space utilization, and facilitating assembly and maintenance.

[0037] More specifically, such as Figure 5 and Figure 6As shown, a mounting part 22 adapted to the tool holder assembly 5 is provided in the mounting cavity. The tool holder assembly 5 is connected to the mounting part 22 in a transverse direction. The mounting part 22 is used to position and install the tool holder assembly 5. By providing the mounting part 22 in the mounting cavity, the shape and size of the mounting part 22 are adapted to the shape and size of the tool holder assembly 5, ensuring that the tool holder assembly 5 can be accurately installed in the predetermined position. The transverse connection between the mounting part 22 and the tool holder assembly 5 provides stable support and positioning for the tool holder assembly 5, preventing the tool holder assembly 5 from shifting laterally during operation.

[0038] More specifically, such as Figures 4 to 6 As shown, the connecting seat 42 and the mounting part 22 abut against each other in the vertical direction. The mounting part 22 is used to support and limit the connecting seat 42. The mounting part 22 is not only used to position and install the tool holder assembly 5, but also to support and limit the connecting seat 42. By setting the connecting seat 42 and the mounting part 22 to abut against each other in the vertical direction, the connecting seat 42 is stably supported in the vertical direction. At the same time, the limiting effect of the mounting part 22 prevents the connecting seat 42 from shaking or shifting in the horizontal direction, thereby improving the stability and reliability of use.

[0039] More specifically, such as Figure 2 As shown, the first housing 1 includes a front housing 14 and a rear housing 15, which are detachably connected. The pen inlet 11 is located on the top of the rear housing 15. The rear housing 15 is detachably connected to the second housing 2 in the vertical direction. The first housing 1 is composed of the front housing 14 and the rear housing 15, which are detachably connected. The entire housing of the pencil sharpener is composed of the front housing 14, the rear housing 15, and the second housing 2. All three are detachable. The split design facilitates the cleaning or replacement of internal components. The detachable connection between the rear housing 15 and the second housing 2 in the vertical direction allows the user to quickly disassemble the entire housing structure. It also includes a shavings box 7, which is connected to the second housing 2 and is mainly used to hold the pencil shavings produced by sharpening.

[0040] More specifically, such as Figure 2 As shown, a drive assembly 6 is installed on the second housing 2. The drive assembly 6 includes a rocker arm 61 and a drive turntable 62. The rocker arm 61 is connected to the drive turntable 62, and the drive turntable 62 is meshed with the transmission turntable 41. The rocker arm 61 is subjected to force, which drives the transmission turntable 41 to rotate through the drive turntable 62. The drive assembly 6 installed on the second housing 2 includes a rocker arm 61 and a drive turntable 62 connected to each other. The rocker arm 61 is subjected to force, which drives the drive turntable 62 to rotate. The drive turntable 62 is meshed with the transmission turntable 41, which can efficiently transmit the rotational force of the rocker arm 61 to the transmission turntable 41, thereby driving the pen feeding assembly 3 and the tool holder assembly 5 to work. The meshing connection between the drive turntable 62 and the transmission turntable 41 ensures the stability and reliability of the transmission.

[0041] 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 pencil sharpener, comprising a first housing (1) and a second housing (2), wherein the first housing (1) and the second housing (2) are detachably connected, and the first housing (1) is provided with a pencil inlet (11) for vertical insertion of a pencil, characterized in that, An installation cavity is formed between the first housing (1) and the second housing (2). The pen feeding assembly (3), the transmission assembly (4) and the tool holder assembly (5) are sequentially installed in the vertical direction in the installation cavity. The pen feeding assembly (3) and the tool holder assembly (5) are connected by the transmission assembly (4). The transmission assembly (4) and the tool holder assembly (5) are detachably connected.

2. A pencil sharpener according to claim 1, characterized in that, The transmission assembly (4) includes a transmission turntable (41) and a connecting seat (42). The transmission assembly (4) enables the pen feed assembly (3) and the tool holder assembly (5) to be connected via the transmission turntable (41). The transmission assembly (4) is detachably connected to the tool holder assembly (5) via the connecting seat (42).

3. A pencil sharpener according to claim 2, characterized in that, The tool holder assembly (5) includes a mounting bracket (51) and a hobbing mechanism (52), the hobbing mechanism (52) being mounted on the mounting bracket (51); the outer wall of the mounting bracket (51) is provided with a latch (512), and the inner wall of the connecting seat (42) is provided with a latch (421) adapted to the latch (512); the latch (512) and the latch (421) are connected to lock the transmission assembly (4) and the tool holder assembly (5) in the vertical direction; the latch (512) and the latch (421) are disengaged to unlock the transmission assembly (4) and the tool holder assembly (5) in the vertical direction.

4. A pencil sharpener according to claim 3, characterized in that, The connecting seat (42) and the mounting bracket (51) are inserted vertically. The mounting bracket (51) can rotate circumferentially relative to the connecting seat (42). The mounting bracket (51) can connect or disengage the latch (512) from the buckle (421) by rotating circumferentially.

5. A pencil sharpener according to claim 4, characterized in that, The inner wall of the connecting seat (42) is provided with an opening (422) adapted to the latch (512), and the latch (512) passes through the opening (422) in the vertical direction to rotate and engage with the latch (421).

6. A pencil sharpener according to claim 3, characterized in that, The mounting bracket (51) is provided with a mounting buckle (53) adapted to the hobbing mechanism (52). The bottom of the hobbing mechanism (52) is connected to the mounting buckle (53). The hobbing mechanism (52) is limited to the mounting bracket (51) by the mounting buckle (53).

7. A pencil sharpener according to claim 2, characterized in that, The inner wall of the first housing (1) is provided with a first mounting plate (12), the inner wall of the second housing (2) is provided with a second mounting plate (21), and the outer wall of the connecting seat (42) is provided with a first mounting groove (423) and a second mounting groove (424). The first mounting groove (423) is connected to the first mounting plate (12), and the second mounting groove (424) is connected to the second mounting plate (21), so that the connecting seat (42) is limited and installed in the mounting cavity.

8. A pencil sharpener according to claim 7, characterized in that, The first mounting groove (423) is an arc-shaped groove, and the surface of the first mounting plate (12) that mates with the first mounting groove (423) is arc-shaped; a third mounting plate (13) that is adapted to the transmission turntable (41) is provided inside the first housing (1), and the third mounting plate (13) and the first mounting plate (12) are distributed vertically, and the third mounting plate (13) and the first mounting plate (12) mate to install the limiting transmission component (4) in the vertical direction.

9. A pencil sharpener according to claim 2 or 7, characterized in that, The mounting cavity is provided with a mounting part (22) adapted to the tool holder assembly (5). The tool holder assembly (5) and the mounting part (22) are connected in the horizontal direction. The mounting part (22) is used to position and install the tool holder assembly (5). The connecting seat (42) abuts against the mounting part (22) in the vertical direction. The mounting part (22) is used to support and limit the connecting seat (42).

10. A pencil sharpener according to claim 2, characterized in that, The first housing (1) includes a front housing (14) and a rear housing (15), which are detachably connected. The pen inlet (11) is located on the top of the rear housing (15), and the rear housing (15) is detachably connected to the second housing (2) in the vertical direction. A drive assembly (6) is installed on the second housing (2), which includes a rocker arm (61) and a drive turntable (62). The rocker arm (61) is connected to the drive turntable (62), and the drive turntable (62) is engaged with the transmission turntable (41). The rocker arm (61) is driven by the drive turntable (62) to rotate the transmission turntable (41).

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