A sharpening delay mechanism and a sharpener

Abstract

The application discloses a sharpening delay mechanism and a sharpener, and the sharpening delay mechanism comprises a floating tool rest, a transmission gear, a linkage rod, a triggering block and a starting switch, the floating tool rest, the transmission gear and the linkage rod are synchronously rotationally connected, the triggering block is provided with a delay structure matched with the starting switch, the floating tool rest can push the triggering block to move through the transmission gear, so that the delay structure triggers the starting switch, a pencil blocking block is arranged in the floating tool rest, the pencil blocking block is used for pushing the linkage rod to abut against the triggering block after sharpening is completed, the linkage rod drives the triggering block to synchronously rotate by abutting against the triggering block, and the delay structure is rotated and separated from the starting switch to complete the highlighter, the automatic feedback of the sharpening completion and the delay highlighter function are realized through the mechanical structure, expensive electronic components are not needed, and the production cost is reduced.

Description

Technical Field

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

[0002] A pencil sharpener is a common stationery item used to sharpen pencils for use. Traditional pencil sharpeners typically consist of a casing, blades, a feed mechanism, and a power unit. Whether manual or electric, their basic function is to use the blades to cut the pencil to a sharp point for writing or drawing. Traditional pencil sharpeners cannot automatically determine whether the pencil has been sharpened; users need to manually control the sharpening time, which can easily result in the pencil being either under-sharpened or over-sharpened. Furthermore, the sharpened pencil often has burrs on the cut surface, affecting the user experience. To address these issues, modern pencil sharpeners incorporate a delay mechanism to automatically detect the degree of sharpening and stop the cutting action after a delay, ensuring the pencil can continue to be used smoothly after sharpening, removing burrs and significantly improving sharpening quality and user experience.

[0003] For example, utility model patent CN213594000U discloses an electric pencil sharpener, including: a housing, a sharpening assembly, a power assembly, a control assembly, a pressing block, and a connecting rod. The housing has a first through hole at its top. The sharpening assembly includes a roller cutter, a roller cutter holder, a cutter holder, a roller cutter shaft, a beveled pressure block, and a beveled pressure block shaft. The power assembly includes a motor and a transmission gear assembly. The control assembly includes a start switch, a delay switch, and a circuit board. When a pencil is inserted into the sharpener, the roller cutter is pressed, pushing the pressing block. The pressing block abuts the start switch, controlling the motor drive module to operate. When the pencil tip grows to abut the beveled pressure block, the beveled pressure block moves downward and pushes the connecting rod. The connecting rod moves downward and abuts the delay switch, controlling the delay circuit module to start. After a timed delay, the motor stops working. In this technical solution, the delay function is achieved through the delay circuit module. When the pencil tip grows to abut the beveled pressure block, the delay circuit starts, and the motor continues to work for a period of time before automatically stopping, thus achieving the function of a light pen. However, the use of delay switches and circuit boards in this technical solution increases the cost of electronic components. The assembly of circuit boards and electronic components requires high precision and specialized skills, increasing production costs and assembly difficulty. Furthermore, the reliability of electronic components is relatively low, making them susceptible to environmental interference. Once a component malfunctions, repair is difficult, requiring specialized technicians for testing and repair, increasing maintenance costs and time. Therefore, there is still a need for a low-cost and reliable tipping delay mechanism and pencil sharpener. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a sharpening delay mechanism and a pencil sharpener, which realizes automatic feedback of sharpening completion and delay of the pen function through mechanical structure. It does not require the use of expensive electronic components, thus reducing production costs. The mechanical structure has high reliability, is not easily affected by environmental factors, reduces the failure rate, and improves the service life of the pencil sharpener.

[0005] This application provides a sharpening delay mechanism, including a floating tool holder, a transmission gear, a linkage rod, a trigger block, and a start switch. The floating tool holder, transmission gear, and linkage rod are all synchronously rotatably connected. The trigger block has a delay structure adapted to the start switch. The floating tool holder can push the trigger block to move through the transmission gear, so that the delay structure triggers the start switch. A pen-blocking block is provided inside the floating tool holder. The pen-blocking block is used to push the linkage rod against the trigger block after sharpening is completed. The linkage rod drives the trigger block to rotate synchronously by abutting against the trigger block. The delay structure rotates and disengages from the start switch to complete the light pen operation.

[0006] In this technical solution, a floating blade holder is used to hold the pencil and blade, and can move up and down as the pencil is inserted. The transmission gear is the key component for power transmission; it not only drives the floating blade holder to rotate but also transmits the movement of the floating blade holder to the trigger block. After the pencil is inserted into the floating blade holder, the downward movement of the pencil causes the floating blade holder to move downward, which in turn pushes the trigger block through the transmission gear to trigger the start switch, thereby initiating the pencil sharpening process. The linkage rod is the key component that links the trigger block. The pencil stop block is used to detect whether the pencil has been sharpened and pushes the trigger rod after sharpening. The trigger block has a delay structure adapted to the start switch to trigger the delay function after sharpening is completed. When the floating blade holder pushes the trigger block to move through the transmission gear, the trigger block triggers the start switch, starting the pencil sharpening process. When sharpening is complete, the pencil tip pushes the linkage rod through the pencil stop block, causing the linkage rod to come into contact with the trigger block. The linkage rod can then drive the trigger block... The block rotates synchronously, and the delay structure comes into contact with the start switch, at which point the pencil is in operation. When the delay structure disengages from the start switch through rotation, the pencil operation is complete, and the start switch is in the off state. The rotation time from contact to disengagement between the delay structure and the start switch is the delayed pencil operation time. During this time, the pencil is sharpened by the floating blade holder and then subjected to the pencil operation to remove burrs and ensure a smooth tip. This sharpening delay mechanism is entirely composed of mechanical structures, eliminating the need for expensive electronic components, thus reducing production costs. The mechanical structure has high reliability, is less affected by environmental factors, reduces the failure rate, and increases the lifespan of the pencil sharpener. Furthermore, the mechanical structure has a fast response speed, with quicker start and stop, improving pencil sharpening efficiency and reliability. Users do not need to be familiar with complex electronic operations; they only need to insert the pencil into the floating blade holder, and the pencil sharpener will automatically complete the sharpening and pencil operation, making it convenient to use.

[0007] As an improvement, the linkage rod is provided with a first transmission structure, and the trigger block is provided with a second transmission structure adapted to the first transmission structure. The first transmission structure is connected to the second transmission structure to enable the linkage rod and the trigger block to rotate synchronously. In this technical solution, the first transmission structure and the second transmission structure are detachably connected and cooperate. The linkage rod and the trigger block move relative to each other in the axial direction, so that the first transmission structure and the second transmission structure can be separated along the axial direction. After the first transmission structure and the second transmission structure are connected, they can rotate synchronously in the circumferential direction. The first transmission structure can be any form of mechanical connection structure, such as gears, racks, cams, stepped structures, etc. The second transmission structure is adapted to the first transmission structure and can be gears, racks, cams, stepped structures, etc. The first transmission structure and the second transmission structure can mesh precisely to ensure that the linkage rod accurately transmits the rotational motion to the trigger block. The synchronous rotation mechanism ensures that the delay structure can accurately cooperate and disengage with the start switch, ensuring that after sharpening, the linkage rod can quickly and stably drive the trigger block to rotate and trigger the delayed photo pen function.

[0008] As an improvement, both the first and second transmission structures adopt a stepped structure. The first transmission structure achieves synchronous circumferential rotation by axially meshing with the second transmission structure. In this technical solution, both the first and second transmission structures adopt a stepped structure. The stepped design of the first and second transmission structures ensures that they can mesh or separate axially. When the linkage rod is connected to the actuating block, the first and second transmission structures mesh axially, ensuring that the linkage rod accurately transmits the rotational motion to the actuating block. The mechanical connection design of the stepped structure ensures stable and reliable motion transmission between the linkage rod and the actuating block, reduces errors and malfunctions during motion transmission, and improves the service life of the pencil sharpener.

[0009] As an improvement, the delay structure is a strip-shaped protrusion extending towards the start switch. The delay structure has a planar section and a sloped section. The delay structure triggers the start switch via the planar section and disengages from the start switch via the sloped section. In this technical solution, the delay structure is a key component on the trigger block, used to control the start and stop of the pencil sharpener. The strip-shaped protrusion extending towards the start switch allows the delay structure to contact the start switch after the pencil is inserted and disengage from the start switch after the pencil is removed, thereby controlling the start and stop of the motor. The planar and sloped sections of the strip-shaped protrusion are used to trigger and disengage from the start switch, respectively. The planar section ensures that the delay structure can stably trigger the start switch, and the planar section completes the pen function by contacting the start switch during rotation under force. The sloped section allows the delay structure to smoothly disengage after the delay ends. When the pencil is inserted into the floating blade holder and pressed down, the floating blade holder pushes the trigger block to move through the transmission gear. The flat section of the trigger block contacts the start switch, starting the motor and beginning the pencil sharpening process. After the pencil is sharpened, the pencil tip pushes the linkage rod to move through the pencil stop block. The linkage rod drives the trigger block to rotate, causing the flat section to rotate relative to the start switch, entering the light pen operation stage. When the trigger block rotates to the point where the inclined section abuts against the start switch, the trigger block gradually separates from the start switch, thus stopping the motor and completing the light pen operation. This mechanism is entirely composed of mechanical structures and does not require the use of expensive electronic components, reducing production costs.

[0010] As an improvement, the delay structure is an elastic delay structure, which elastically abuts against the start switch when subjected to force. In this technical solution, the delay structure has elastic characteristics, enabling it to elastically abut against the start switch when force is applied and return to its original position after the force disappears. The elastic delay structure can be made of springs, elastic sheets, or other elastic materials. When the pencil is inserted into the floating blade holder and pressed down, the floating blade holder pushes the trigger block to move through the transmission gear. The elastic delay structure on the trigger block elastically abuts against the start switch, triggering the motor to start. The elastic delay structure has more elastic space, providing more buffering during installation and operation, avoiding damage to the start switch caused by rigid contact, making the installation process more flexible, and reducing the impact of installation errors on the start switch. During operation, the elastic characteristics of the elastic delay structure can absorb some impact force, protecting the start switch from damage and extending its service life.

[0011] As an improvement, the linkage rod is connected to a first elastic element. Under the action of the first elastic element, the linkage rod resets and remains separated from the trigger block. In this technical solution, the first elastic element includes, but is not limited to, a spring or an elastic sheet. The linkage rod achieves its reset function by connecting to the first elastic element and remains separated from the trigger block when no external force is applied. Under the action of the pencil-blocking block, the linkage rod compresses the first elastic element to maintain connection with the trigger block. After the pencil is pulled out, the first elastic element ensures that the linkage rod can automatically return to its initial position when no external force is applied, thus improving the reliability and stability of the entire mechanism.

[0012] As an improvement, a mounting base is also included. The transmission gear, the trigger block, and the start switch are all mounted on the mounting base. A second elastic element is mounted on the mounting base and connected to the trigger block. The second elastic element is used to rotate the trigger block to its reset position. In this technical solution, the mounting base is the supporting component of the entire sharpening delay mechanism. The mounting base has multiple mounting positions for stably mounting key components such as the transmission gear, the trigger block, and the start switch. The transmission gear is responsible for transmitting the movement of the floating tool holder to the trigger block, ensuring that the trigger block can trigger the start switch. The trigger block is mounted on the mounting base and connected to the transmission gear and the start switch, ensuring that it can accurately trigger the start switch. The start switch is mounted on the mounting base by screws or other fixing methods, ensuring that it can be reliably triggered by the trigger block to realize the start and stop of the motor. The second elastic element is used to automatically rotate the trigger block to its reset position when no external force is applied. The second elastic element is mounted on the mounting base and connected to the trigger block, ensuring that the trigger block can return to its initial position after each use, avoiding malfunctions caused by mechanical jamming and improving the service life of the pencil sharpener.

[0013] As an improvement, the actuating block is provided with a first through hole adapted to the linkage rod, and the mounting base is provided with a first groove adapted to the first through hole. One end of the linkage rod passes through the first through hole and is inserted into the first groove. The first elastic element is installed in the first groove and abuts against one end of the linkage rod. In this technical solution, the first through hole is a structure on the actuating block, the inner diameter of which is slightly larger than the outer diameter of the linkage rod, for cooperating with the linkage rod to ensure that the linkage rod can smoothly pass through the actuating block and connect with it. The first groove is a structure on the mounting base for accommodating the first elastic element and one end of the linkage rod, ensuring that the linkage rod can be stably inserted into the first groove and abut against the first elastic element. The first elastic element is installed in the first groove, one end of which abuts against one end of the linkage rod, and the other end abuts against the bottom of the mounting base, so that the linkage rod can automatically reset when there is no external force and remain separated from the actuating block, ensuring that the linkage rod maintains a precise position and movement during operation, reducing failures caused by mechanical vibration or external force, and improving the service life of the pencil sharpener.

[0014] As an improvement, the mounting base is provided with a first arc-shaped groove adapted to the delay structure. The first arc-shaped groove has an opening that connects to the start switch. The delay structure rotates within the first arc-shaped groove to engage or disengage from the start switch. In this technical solution, the first arc-shaped groove is a structure on the mounting base used to accommodate the delay structure and ensure that the delay structure can rotate smoothly within the groove to engage or disengage from the start switch. The first arc-shaped groove has an opening that connects to the start switch, ensuring that the delay structure can engage or disengage from the start switch through the opening. The design of the first arc-shaped groove and the opening ensures stable mechanical contact between the delay structure and the start switch, reducing false triggering or poor contact caused by mechanical vibration or external force.

[0015] As an improvement, the actuating block is provided with a connecting rod adapted to the second elastic element, and the mounting base is provided with a second arc-shaped groove for the connecting rod to pass through. One end of the second elastic element is connected to the mounting base, and the other end of the second elastic element is connected to the connecting rod. In this technical solution, by providing a connecting rod on the actuating block for connection with the second elastic element, the second arc-shaped groove is a structure on the mounting base used to accommodate the connecting rod and ensure that the connecting rod can move smoothly within the second arc-shaped groove during rotation. The connecting rod passes through the second arc-shaped groove to connect to the second elastic element, and the second elastic element is installed at the bottom of the mounting base. The installation position is more reasonable and reliable, avoiding interference with the operation of other components, the spatial distribution is more reasonable, and the assembly of the second elastic element is simpler and more reliable.

[0016] As an improvement, the transmission gear is provided with a mounting cavity for mounting the linkage rod. The transmission gear drives the linkage rod to rotate synchronously through the mounting cavity. One end of the linkage rod passes through the mounting cavity and connects to the pen stop block, while the other end of the linkage rod passes through the mounting cavity and engages with the touch block. In this technical solution, the mounting cavity is set on the transmission gear to mount the linkage rod, ensuring that the linkage rod can rotate synchronously with the transmission gear. The linkage rod is inserted into the mounting cavity, with one end extending through the mounting cavity to connect to the pen stop block, and the other end extending through the mounting cavity to engage with the touch block in a separable manner. The linkage rod can move stably along the axial direction within the mounting cavity and form a reliable engagement with the touch block, ensuring motion transmission and improving the motion transmission accuracy of the entire mechanism. More preferably, the side wall of the linkage rod is provided with a limiting plane. The linkage rod fits against the inner wall of the mounting cavity through the limiting plane, so that the linkage rod is limited in rotation within the mounting cavity. The linkage rod and the transmission gear cannot rotate relative to each other, allowing the linkage rod and the transmission gear to rotate synchronously. The structural design is simple and reliable.

[0017] As an improvement, the bottom of the floating tool holder is provided with a third transmission structure, and the top of the transmission gear is provided with a fourth transmission structure adapted to the third transmission structure. The third transmission structure meshes with the fourth transmission structure to enable the floating tool holder and the transmission gear to rotate synchronously. In this technical solution, the third transmission structure can be a gear, rack, cam, or other mechanical structure, and the fourth transmission structure is adapted to the shape and size of the third transmission structure. The fourth transmission structure can also be a gear, rack, cam, or other mechanical structure to ensure stable meshing between the two, enabling the floating tool holder and the transmission gear to rotate synchronously and achieve precise motion transmission.

[0018] This application can also provide a pencil sharpener, including any of the aforementioned sharpening delay mechanisms, and a housing, wherein the sharpening delay mechanism is installed within the housing. In this technical solution, after the pencil passes through the housing and is inserted into the floating blade holder, the downward pressing action of the pencil causes the floating blade holder to move downward, which in turn drives a trigger block to activate a start switch via a transmission gear, thereby initiating the pencil sharpening process. The trigger block has a delay structure adapted to the start switch, used to trigger the delay function after sharpening is completed. When the floating blade holder pushes the trigger block to move via the transmission gear, the trigger block activates the start switch, starting the pencil sharpening process. When sharpening is complete, the pencil tip pushes a linkage rod to move via a pencil-blocking block, causing the linkage rod to abut against the trigger block. The linkage rod can drive the trigger block to rotate synchronously, and the delay structure abuts against the start switch, at which point the light pen operation is complete. When the delay structure disengages from the start switch through rotation, the light pen operation is complete, and the start switch is in the off position. In the stopped state, the rotation time from contact to disengagement between the delay mechanism and the start switch is the delayed pencil sharpening time. During this time, the pencil is sharpened by the floating blade holder and then polished to remove burrs and ensure a smooth tip. This sharpening delay mechanism is entirely mechanical, eliminating the need for expensive electronic components, thus reducing production costs. The mechanical structure is highly reliable, less susceptible to environmental factors, reducing the failure rate and extending the lifespan of the pencil sharpener. Furthermore, the mechanical structure has a fast response speed, allowing for quicker start-up and stop, improving sharpening efficiency and reliability. Users do not need to be familiar with complex electronic operations; simply insert the pencil into the floating blade holder, and the pencil sharpener will automatically complete the sharpening and polishing operations, making it convenient to use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a sharpening delay mechanism according to this application.

[0020] Figure 2 This is a schematic diagram of the explosive structure of a tipping delay mechanism according to this application.

[0021] Figure 3 This is a partial structural schematic diagram of a sharpening delay mechanism according to this application.

[0022] Figure 4This is a three-dimensional structural diagram of the trigger block and start switch in this application.

[0023] Figure 5 This is a three-dimensional structural diagram of the trigger block and linkage rod in this application.

[0024] Figure 6 This is a three-dimensional structural diagram of the mounting base in this application.

[0025] Figure 7 This is an exploded structural diagram of the floating tool holder, transmission gear, and linkage rod in this application.

[0026] Figure 8 This is a three-dimensional structural diagram of a pencil sharpener according to this application.

[0027] Figure 9 This is a cross-sectional structural diagram of a pencil sharpener according to this application.

[0028] The figure shows: 1. Floating tool holder; 11. Third transmission structure; 2. Transmission gear; 21. Mounting cavity; 22. Fourth transmission structure; 3. Linkage rod; 31. First transmission structure; 32. Limiting plane; 4. Actuating block; 41. Delay structure; 411. Planar section; 412. Inclined section; 42. Second transmission structure; 43. First through hole; 44. Connecting rod; 5. Start switch; 6. Pen block; 7. First elastic element; 8. Mounting base; 81. First groove; 82. First arc groove; 821. Opening; 83. Second arc groove; 9. Second elastic element; 10. Housing. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] like Figures 1 to 7As shown, this application discloses a sharpening delay mechanism, including a floating blade holder 1, a transmission gear 2, a linkage rod 3, a trigger block 4, and a start switch 5. The floating blade holder 1 is used to mount a pencil and a blade, and can move up and down with the insertion of the pencil. The floating blade holder 1, the transmission gear 2, and the linkage rod 3 are all synchronously rotated and connected. The transmission gear 2 is a key component for power transmission, which not only drives the floating blade holder 1 to rotate, but also transmits the movement of the floating blade holder 1 to the trigger block 4. The floating blade holder 1 can push the trigger block 4 to move through the transmission gear 2, so that the delay structure 41 triggers the start switch 5. After the pencil is inserted into the floating blade holder 1, the downward pressing action of the pencil causes the floating blade holder 1 to move downward. The pen-sharpening process is initiated by the drive gear 2 pushing the trigger block 4 to trigger the start switch 5. The trigger block 4 is equipped with a delay structure 41 adapted to the start switch 5. The floating blade holder 1 is equipped with a pen-blocking block 6. The pen-blocking block 6 is used to push the linkage rod 3 against the trigger block 4 after sharpening. The linkage rod 3 drives the trigger block 4 to rotate synchronously by abutting against the trigger block 4. The delay structure 41 rotates and disengages from the start switch 5 to complete the light pen operation. The linkage rod 3 is a key component of the linkage trigger block 4. The pen-blocking block 6 is used to detect whether the pencil has been sharpened and push the trigger rod after sharpening. The trigger block 4 is equipped with a delay structure 41 adapted to the start switch 5 to trigger the delay function after sharpening. When the floating blade holder 1 pushes the actuating block 4 to move via the transmission gear 2, the actuating block 4 triggers the start switch 5, initiating pen sharpening. Upon completion of sharpening, the pen tip pushes the linkage rod 3 via the pen-blocking block 6, causing the linkage rod 3 to contact the actuating block 4. The linkage rod 3 then drives the actuating block 4 to rotate synchronously, causing the delay structure 41 to contact the start switch 5. This is the light pen operation. When the delay structure 41 disengages from the start switch 5 through rotation, the light pen operation is complete, and the start switch 5 is in the off state. The rotation time from contact to disengagement between the delay structure 41 and the start switch 5 is the delayed light pen operation time. After sharpening, the floating blade holder 1 performs a finishing touch operation on the pencil to remove burrs and ensure a smooth tip. This sharpening delay mechanism is entirely composed of mechanical structures, eliminating the need for expensive electronic components, thus reducing production costs. The mechanical structure boasts high reliability, is less susceptible to environmental factors, reduces the failure rate, and extends the lifespan of the pencil sharpener. Furthermore, the mechanical structure offers fast response, with quicker start-up and stop, improving sharpening efficiency and reliability. Users do not need to be familiar with complex electronic operations; simply insert the pencil into the floating blade holder 1, and the pencil sharpener will automatically complete the sharpening and finishing touch operations, making it convenient to use.

[0034] More specifically, such as Figure 5As shown, the linkage rod 3 is provided with a first transmission structure 31, and the actuating block 4 is provided with a second transmission structure 42 adapted to the first transmission structure 31. The first transmission structure 31 is connected to the second transmission structure 42 to enable the linkage rod 3 and the actuating block 4 to rotate synchronously. The first transmission structure 31 and the second transmission structure 42 are detachably connected and fitted. The linkage rod 3 and the actuating block 4 can move relative to each other in the axial direction, so that the first transmission structure 31 and the second transmission structure 42 can be separated in the axial direction. After the first transmission structure 31 and the second transmission structure 42 are connected, they can rotate synchronously in the circumferential direction. 31 can be any form of mechanical connection structure, such as gears, racks, cams, stepped structures, etc. The second transmission structure 42 is adapted to the first transmission structure 31 and can be gears, racks, cams, stepped structures, etc. The first transmission structure 31 and the second transmission structure 42 can mesh precisely to ensure that the linkage rod 3 accurately transmits the rotational motion to the touch block 4. The synchronous rotation mechanism ensures that the delay structure 41 can accurately engage and disengage with the start switch 5, ensuring that after sharpening, the linkage rod 3 can quickly and stably drive the touch block 4 to rotate and trigger the delayed photo pen function.

[0035] More specifically, such as Figure 5 As shown, both the first transmission structure 31 and the second transmission structure 42 adopt a stepped structure. The first transmission structure 31 achieves synchronous circumferential rotation by meshing with the second transmission structure 42 along the axial direction. The stepped design of the first transmission structure 31 and the second transmission structure 42 ensures that they can mesh or separate along the axial direction. When the linkage rod 3 is connected to the touch block 4, the first transmission structure 31 and the second transmission structure 42 mesh along the axial direction, ensuring that the linkage rod 3 accurately transmits the rotational motion to the touch block 4. The mechanical connection design of the stepped structure ensures that the motion transmission between the linkage rod 3 and the touch block 4 is stable and reliable, reduces errors and malfunctions in the motion transmission process, and improves the service life of the pencil sharpener.

[0036] More specifically, such as Figure 3 and Figure 4As shown, the delay structure 41 is a strip-shaped protrusion extending toward the start switch 5. The delay structure 41 has a planar section 411 and an inclined section 412. The delay structure 41 triggers the start switch 5 through the planar section 411 and disengages from the start switch 5 through the inclined section 412. The delay structure 41 is a key component on the trigger block 4, used to control the start and stop of the pencil sharpener. The strip-shaped protrusion extending toward the start switch 5 allows the delay structure 41 to contact the start switch 5 after the pencil is inserted and to disengage from the start switch 5 after the pencil is removed, thereby controlling the start and stop of the motor. The planar section 411 and the inclined section 412 of the strip-shaped protrusion are used to trigger and disengage from the start switch 5, respectively. The planar section 411 ensures that the delay structure 41 can stably trigger the start switch 5, and the planar section 411 is also designed to withstand force. During rotation, the light pen function is completed by contacting the start switch 5. After the delay, the inclined section 412 smoothly disengages the delay structure 41 from the start switch 5. When the pencil is inserted into the floating blade holder 1 and pressed down, the floating blade holder 1 pushes the touch block 4 to move through the transmission gear 2. The flat section 411 of the touch block 4 contacts the start switch 5, starting the motor and beginning to sharpen the pencil. After the pencil is sharpened, the pencil tip pushes the linkage rod 3 to move through the pencil block 6. The linkage rod 3 drives the touch block 4 to rotate, causing the flat section 411 to rotate relative to the start switch 5, entering the light pen operation stage. When the touch block 4 rotates to the point where the inclined section 412 contacts the start switch 5, the touch block 4 gradually separates from the start switch 5, thereby stopping the motor and completing the light pen operation. This mechanism is entirely composed of mechanical structures and does not require expensive electronic components, reducing production costs.

[0037] More specifically, such as Figures 2 to 4 As shown, the delay structure 41 is an elastic delay structure 41. When subjected to force, the delay structure 41 elastically contacts the start switch 5. The delay structure 41 possesses elastic properties, enabling it to elastically contact the start switch 5 when force is applied and return to its original position after the force disappears. The elastic delay structure 41 can be made of a spring, elastic sheet, or other elastic material. When the pencil is inserted into the floating blade holder 1 and pressed down, the floating blade holder 1 pushes the trigger block 4 to move via the transmission gear 2. The elastic delay structure 41 on the trigger block 4 elastically contacts the start switch 5, triggering the motor to start. The elastic delay structure 41 has more elastic space. It can provide more buffering during installation and operation, avoiding damage to the start switch 5 caused by hard contact, making the installation process more flexible and reducing the impact of installation errors on the start switch 5. During operation, the elastic characteristics of the elastic delay structure 41 can absorb part of the impact force, protecting the start switch 5 from damage and extending the service life of the start switch 5. In this application, the start switch 5 includes, but is not limited to, an inductive start switch 5 and a push-button start switch 5, preferably a push-button start switch 5, which has a simple design, low cost, high reliability, and is suitable for various mechanical structures.

[0038] More specifically, such as Figure 2 and Figure 3 As shown, the linkage rod 3 is connected to a first elastic element 7. Under the action of the first elastic element 7, the linkage rod 3 resets and remains separated from the trigger block 4. The first elastic element 7 includes, but is not limited to, a spring and an elastic sheet. The linkage rod 3 achieves the reset function by connecting to the first elastic element 7 and remains separated from the trigger block 4 when no external force is applied. Under the action of the pencil block 6, the linkage rod 3 compresses the first elastic element 7 to maintain connection with the trigger block 4. After the pencil is pulled out, the first elastic element 7 ensures that the linkage rod 3 can automatically return to its initial position when no external force is applied, thus improving the reliability and stability of the entire mechanism.

[0039] More specifically, such as Figure 1 , Figure 2 and Figure 6 As shown, it also includes a mounting base 8. The transmission gear 2, the trigger block 4, and the start switch 5 are all mounted on the mounting base 8. A second elastic element 9 is mounted on the mounting base 8 and is connected to the trigger block 4. The second elastic element 9 is used to rotate and reset the trigger block 4. The mounting base 8 is the supporting component of the entire sharpening delay mechanism. The mounting base 8 has multiple mounting positions for stably mounting key components such as the transmission gear 2, the trigger block 4, and the start switch 5. The transmission gear 2 is responsible for transmitting the movement of the floating tool holder 1 to the trigger block 4, ensuring that the trigger block 4 can trigger the start switch 5. Installed on the mounting base 8, it is connected to the transmission gear 2 and the start switch 5, ensuring that it can accurately trigger the start switch 5. The start switch 5 is installed on the mounting base 8 by screws or other fixing methods, ensuring that it can be reliably triggered by the touch block 4 to realize the start and stop of the motor. The second elastic element 9 is used to make the touch block 4 automatically rotate and reset when there is no external force. The second elastic element 9 is installed on the mounting base 8 and connected to the touch block 4, ensuring that the touch block 4 can return to the initial position after each use, avoiding failures caused by mechanical jamming and improving the service life of the pencil sharpener.

[0040] More specifically, such as Figures 3 to 6As shown, the actuating block 4 has a first through hole 43 adapted to the linkage rod 3, and the mounting base 8 has a first groove 81 adapted to the first through hole 43. One end of the linkage rod 3 passes through the first through hole 43 and is inserted into the first groove 81. The first elastic element 7 is installed in the first groove 81 and abuts against one end of the linkage rod 3. The first through hole 43 is a structure on the actuating block 4, and its inner diameter is slightly larger than the outer diameter of the linkage rod 3. It is used to cooperate with the linkage rod 3 to ensure that the linkage rod 3 can pass smoothly through the actuating block 4 and connect with it. The first groove 81 is a structure on the mounting base 8. The first elastic element 7 and one end of the linkage rod 3 are accommodated, ensuring that the linkage rod 3 can be stably inserted into the first groove 81 and abut against the first elastic element 7. The first elastic element 7 is installed in the first groove 81, with one end abutting against one end of the linkage rod 3 and the other end abutting against the bottom of the mounting base 8, so that the linkage rod 3 can automatically reset when there is no external force and remain separated from the touch block 4, ensuring that the linkage rod 3 maintains a precise position and movement during operation, reducing failures caused by mechanical vibration or external force, and improving the service life of the pencil sharpener.

[0041] More specifically, such as Figure 2 and Figure 6 As shown, the mounting base 8 is provided with a first arc-shaped groove 82 adapted to the delay structure 41. The first arc-shaped groove 82 is provided with an opening 821 that connects to the start switch 5. The delay structure 41 rotates within the first arc-shaped groove 82 to abut or disengage from the start switch 5. The first arc-shaped groove 82 is a structure on the mounting base 8 used to accommodate the delay structure 41 and ensure that the delay structure 41 can rotate smoothly within the groove to achieve abutment or disengagement with the start switch 5. The first arc-shaped groove 82 is provided with an opening 821 that connects to the start switch 5, ensuring that the delay structure 41 can abut or disengage from the start switch 5 through the opening 821. The design of the first arc-shaped groove 82 and the opening 821 ensures stable mechanical contact between the delay structure 41 and the start switch 5, reducing false triggering or poor contact caused by mechanical vibration or external force.

[0042] More specifically, such as Figure 1 and Figure 6 As shown, the actuating block 4 is provided with a connecting rod 44 adapted to the second elastic member 9, and the mounting base 8 is provided with a second arc-shaped groove 83 for the connecting rod 44 to pass through. One end of the second elastic member 9 is connected to the mounting base 8, and the other end of the second elastic member 9 is connected to the connecting rod 44. By setting the connecting rod 44 on the actuating block 4, it is used to connect with the second elastic member 9. The second arc-shaped groove 83 is a structure on the mounting base 8 to accommodate the connecting rod 44 and ensure that the connecting rod 44 can move smoothly in the second arc-shaped groove 83 during rotation. The connecting rod 44 passes through the second arc-shaped groove 83 to connect with the second elastic member 9. The second elastic member 9 is installed at the bottom of the mounting base 8. The installation position is more reasonable and reliable, avoiding interference with the operation of other components. The spatial distribution is more reasonable, and the assembly of the second elastic member 9 is simpler and more reliable.

[0043] More specifically, such as Figure 7 As shown, the transmission gear 2 has a mounting cavity 21 for mounting the linkage rod 3. The transmission gear 2 drives the linkage rod 3 to rotate synchronously through the mounting cavity 21. One end of the linkage rod 3 passes through the mounting cavity 21 and connects to the pen stop block 6. The other end of the linkage rod 3 passes through the mounting cavity 21 and cooperates with the touch block 4. The mounting cavity 21 is set on the transmission gear 2 to mount the linkage rod 3, ensuring that the linkage rod 3 can rotate synchronously with the transmission gear 2. The linkage rod 3 is inserted into the mounting cavity 21, with one end of the linkage rod 3 extending through the mounting cavity 21 to connect to the pen stop block 6, and the other end passing through the mounting cavity 21 to cooperate with the touch block 4. The mounting cavity 21 extends out to detachably engage with the actuating block 4. The linkage rod 3 can move stably along the axial direction within the mounting cavity 21 and form a reliable engagement with the actuating block 4, ensuring motion transmission and improving the motion transmission accuracy of the entire mechanism. The side wall of the linkage rod 3 is provided with a limiting plane 32. The linkage rod 3 fits against the inner wall of the mounting cavity 21 through the limiting plane 32, so that the linkage rod 3 is limited to rotation within the mounting cavity 21. The linkage rod 3 and the transmission gear 2 cannot rotate relative to each other, so that the linkage rod 3 and the transmission gear 2 rotate synchronously. The structural design is simple and reliable.

[0044] More specifically, such as Figure 7 As shown, the bottom of the floating tool holder 1 is provided with a third transmission structure 11, and the top of the transmission gear 2 is provided with a fourth transmission structure 22 adapted to the third transmission structure 11. The third transmission structure 11 and the fourth transmission structure 22 mesh to make the floating tool holder 1 and the transmission gear 2 rotate synchronously. The third transmission structure 11 can be a gear, rack, cam or other mechanical structure. The shape and size of the fourth transmission structure 22 are adapted to the third transmission structure 11. The fourth transmission structure 22 can be a gear, rack, cam or other mechanical structure to ensure that the two can mesh stably. The floating tool holder 1 and the transmission gear 2 can rotate synchronously to achieve precise motion transmission.

[0045] like Figure 8 and Figure 9As shown, this embodiment can also provide a pencil sharpener, including any of the aforementioned sharpening delay mechanisms, and a housing 10, wherein the sharpening delay mechanism is installed inside the housing 10. In this technical solution, after the pencil passes through the housing 10 and is inserted into the floating blade holder 1, the downward pressing action of the pencil causes the floating blade holder 1 to move downward, which pushes the trigger block 4 through the transmission gear 2 to trigger the start switch 5, thereby starting the pencil sharpening process. The trigger block 4 is provided with a delay structure 41 adapted to the start switch 5, which is used to trigger the delay function after sharpening is completed. When the floating blade holder 1 pushes the trigger block 4 to move through the transmission gear 2, the trigger block 4 triggers the start switch 5, and the pencil sharpening begins. When the sharpening is completed, the pencil tip pushes the linkage rod 3 to move through the pencil blocking block 6, so that the linkage rod 3 abuts against the trigger block 4. The linkage rod 3 can drive the trigger block 4 to rotate synchronously, and the delay structure 41 abuts against the start switch 5. At this time, it is a light pen operation. When the delay structure 41 is disengaged from the start switch 5 by rotation, the light pen... Once the operation is complete, the start switch 5 is in the off state. The rotation time from contact to disengagement between the delay structure 41 and the start switch 5 is the delayed pencil sharpening time. During this time, the pencil is sharpened by the floating blade holder 1 and then polished to remove burrs and ensure a smooth tip. This sharpening delay mechanism is entirely mechanical, eliminating the need for expensive electronic components, thus reducing production costs. The mechanical structure is highly reliable, less susceptible to environmental factors, reducing the failure rate and extending the lifespan of the pencil sharpener. Furthermore, the mechanical structure has a fast response speed, allowing for quicker start-up and stop, improving sharpening efficiency and reliability. Users do not need to be familiar with complex electronic operations; they simply insert the pencil into the floating blade holder 1, and the pencil sharpener automatically completes the sharpening and polishing operations, making it convenient to use.

[0046] 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 sharpening delay mechanism, characterized in that, The device includes a floating tool holder (1), a transmission gear (2), a linkage rod (3), a trigger block (4), and a start switch (5). The floating tool holder (1), the transmission gear (2), and the linkage rod (3) are all connected to rotate synchronously. The trigger block (4) is equipped with a delay structure (41) adapted to the start switch (5). The floating tool holder (1) can push the trigger block (4) to move through the transmission gear (2) so that the delay structure (41) triggers the start switch (5). The floating tool holder (1) is equipped with a pen-blocking block (6). The pen-blocking block (6) is used to push the linkage rod (3) to abut against the trigger block (4) after sharpening. The linkage rod (3) drives the trigger block (4) to rotate synchronously by abutting against the trigger block (4). The delay structure (41) rotates and disengages from the start switch (5) to complete the light pen operation.

2. The sharpening delay mechanism according to claim 1, characterized in that, The linkage rod (3) is provided with a first transmission structure (31), and the actuating block (4) is provided with a second transmission structure (42) adapted to the first transmission structure (31). The first transmission structure (31) is connected to the second transmission structure (42) so that the linkage rod (3) and the actuating block (4) rotate synchronously.

3. The sharpening delay mechanism according to claim 2, characterized in that, The first transmission structure (31) and the second transmission structure (42) both adopt a stepped structure. The first transmission structure (31) achieves synchronous circumferential rotation by meshing with the second transmission structure (42) along the axial direction.

4. The sharpening delay mechanism according to claim 1, characterized in that, The delay structure (41) is a strip-shaped protrusion extending toward the start switch (5). The delay structure (41) has a planar section (411) and an inclined section (412). The delay structure (41) triggers the start switch (5) through the planar section (411) and disengages from the start switch (5) through the inclined section (412).

5. A sharpening delay mechanism according to claim 1 or 4, characterized in that, The delay structure (41) is an elastic delay structure (41), and the delay structure (41) is subjected to force and elastically contacts the start switch (5).

6. The sharpening delay mechanism according to claim 1, characterized in that, The linkage rod (3) is connected to the first elastic element (7). The linkage rod (3) is reset under the action of the first elastic element (7) and remains separated from the trigger block (4).

7. The sharpening delay mechanism according to claim 6, characterized in that, It also includes a mounting base (8), on which the transmission gear (2), the actuating block (4) and the start switch (5) are all mounted. A second elastic element (9) is mounted on the mounting base (8), and the second elastic element (9) is connected to the actuating block (4). The second elastic element (9) is used to rotate and reset the actuating block (4).

8. The sharpening delay mechanism according to claim 7, characterized in that, The actuating block (4) is provided with a first through hole (43) adapted to the linkage rod (3), and the mounting base (8) is provided with a first groove (81) adapted to the first through hole (43). One end of the linkage rod (3) passes through the first through hole (43) and is inserted into the first groove (81). The first elastic element (7) is installed in the first groove (81) and abuts against one end of the linkage rod (3).

9. A sharpening delay mechanism according to claim 7, characterized in that, The mounting base (8) is provided with a first arc-shaped groove (82) adapted to the delay structure (41). The first arc-shaped groove (82) is provided with an opening (821) communicating with the start switch (5). The delay structure (41) rotates within the first arc-shaped groove (82) to abut or disengage from the start switch (5).

10. A sharpening delay mechanism according to claim 1, characterized in that, The transmission gear (2) is provided with a mounting cavity (21) for mounting the linkage rod (3). The transmission gear (2) drives the linkage rod (3) to rotate synchronously through the mounting cavity (21). One end of the linkage rod (3) passes through the mounting cavity (21) and connects to the pen block (6). The other end of the linkage rod (3) passes through the mounting cavity (21) and cooperates with the touch block (4).

11. A pencil sharpener, characterized in that, Includes a sharpening delay mechanism as described in any one of claims 1-10.

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