Control module for an electric pencil sharpener

Abstract

The utility model discloses a control module of electric pencil sharpener, the electric pencil sharpener includes the knife rest and drive motor, control module includes the control assembly of control drive motor rotation direction, and control assembly includes the movable change-over switch, control module includes the positive rotation trigger assembly, and the positive rotation trigger assembly includes the movable trigger rod, and the activity path of trigger rod and the activity path of change-over switch intersect, and trigger rod abuts change-over switch and makes drive motor positive rotation, control module includes the switching assembly of change-over switch and drive activity, and switching assembly drives change-over switch and changes position, and removes the cooperation with trigger rod, makes drive motor reverse rotation, the utility model mainly relies on the trigger and switching of mechanical structure and realizes the positive and negative rotation control of drive motor. Avoid the design, manufacture and debugging process of complex circuit, simplify the product whole structure, reduce the failure rate. Reduce the use quantity of electronic component, reduce raw material cost, also make maintenance more simple, intuitive.

Description

Technical Field

[0001] This utility model relates to the field of pencil sharpener manufacturing and design, and more specifically, to the control module of an electric pencil sharpener. Background Technology

[0002] With the continuous development of the stationery market and the increasing demand for convenient writing tools, electric pencil sharpeners, with their significant advantages of efficiency and convenience, have rapidly gained an important position in various scenarios, becoming a common tool in schools, offices, art studios, and other places. Compared to traditional manual pencil sharpeners, electric pencil sharpeners automate the pencil sharpening process by using a motor to drive the blade holder, greatly saving users' time and effort and improving pencil sharpening efficiency.

[0003] The automatic pencil advance and retraction function is an important innovation in the development of electric pencil sharpeners. It is closely related to and complements electric pencil sharpeners. It makes the operation of electric pencil sharpeners more intelligent and user-friendly. Users do not need to manually insert and remove the pencil from the blade holder. They only need to place the pencil in the designated position, and the electric pencil sharpener can automatically complete the entire process of pencil advance, sharpening, and retraction. This function further enhances the convenience of pencil sharpening.

[0004] Currently, some electric pencil sharpeners on the market achieve automatic pencil advance and retraction by controlling the forward and reverse rotation of the drive motor. They use relatively complex circuit modules to change the direction of the motor, which not only increases the failure rate of the product, but also leads to an increase in the manufacturing and maintenance costs of the product. Utility Model Content

[0005] This invention overcomes the shortcomings of the prior art and provides a control module for an electric pencil sharpener that is simple in structure, reasonable in design, has a lower failure rate, and is cost-effective.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: The electric pencil sharpener includes a mounting base and a blade holder and a drive motor mounted on the mounting base. The drive motor drives the blade holder to rotate. The control module includes a control component that controls the rotation direction of the drive motor, and the control component includes a movable switch. The control module also includes a forward rotation trigger component, which includes a movable trigger rod whose movement path intersects with the movement path of the switch. The trigger rod abuts against the switch to cause the drive motor to rotate forward. The control module further includes a switching component that drives the switch to change position and disengages from the trigger rod, causing the drive motor to reverse.

[0007] Furthermore, the control component includes a switch housing rotatably mounted on a mounting base, with a switch fixedly disposed within the switch housing; a switching component is connected to the switch housing and drives it to move and change the position of the switch; the switch is provided with a forward button and a reverse button for controlling the forward and reverse rotation of the drive motor; a rotatable reversing latch is mounted inside the switch housing, the reversing latch including an assembly part and a first abutment part and a second abutment part symmetrically disposed on the outer surface of the assembly part; the reverse button is located on the movement path of the first abutment part; the forward button is located on the movement path of the second abutment part, and the movement path of the second abutment part intersects with the movement path of the trigger rod; an assembly plate is fixedly connected inside the switch housing, with the first abutment part located between the assembly plate and the reverse button; a reversing spring is also provided inside the switch housing, with both ends of the reversing spring connected and engaged with the first abutment part and the assembly plate respectively, and applying a force to the first abutment part toward the movement of the reverse button.

[0008] Furthermore, the two ends of the blade holder are respectively provided with a sharpening inlet for the pencil to enter the blade holder and a sharpening outlet for the pencil lead to emerge from the blade holder; the sharpening inlet is provided with a pencil feeding and discharging mechanism; the pencil feeding and discharging mechanism includes a scroll plate that cooperates with the blade holder and rotates with it, and also includes a first rotating shaft and a second rotating shaft that cooperate with the scroll plate; the rotation of the scroll plate drives the first rotating shaft and the second rotating shaft to rotate, the clockwise rotation of the scroll plate drives the two shafts to rotate inward to feed the pencil, and the counterclockwise rotation of the scroll plate drives the two shafts to rotate outward to discharge the pencil; the control module includes a reverse trigger component that cooperates with the switching component to drive the switching switch to operate; the reverse trigger component is movably disposed at the sharpening outlet and is located on the active path of the pencil lead emerging from the blade holder.

[0009] Furthermore, the switching assembly includes a switching gear, a gear mounting shaft, and a switching rack; a mounting plate is fixedly mounted on the mounting base, and the switching rack is movably mounted on the mounting plate; the gear mounting shaft is rotatably mounted on the mounting base and / or the mounting plate; the switching gear includes a first switching gear and a second switching gear mounted on the gear mounting shaft, the first switching gear and the switching rack meshing with each other; the second switching gear is located on the active path of the reversing trigger assembly, the reversing trigger assembly cooperates with the second switching gear, and drives the second switching gear to rotate; the switching rack is connected to the switch housing, and drives the switch housing and the switching switch to rotate.

[0010] Furthermore, a transmission assembly is provided between the tool holder and the drive motor. The transmission assembly includes a transmission gear and a rotating gear mounted on the mounting base. The transmission gear engages with the drive motor and the rotating gear. The reversing trigger assembly includes a trigger shaft, which is movably mounted on the mounting base. The direction of movement of the trigger shaft corresponds to its axial direction. The trigger shaft passes through the rotating gear, and one end engages with the tool holder and is located on the path where the pen refill protrudes from the tool holder. The trigger shaft movably engages with the rotating gear and the tool holder. The trigger shaft is provided with a first mating part arranged along its axial direction. The rotating gear and the tool holder are respectively provided with a second mating part and a third mating part that engage with the first mating part. The end of the trigger shaft away from the tool holder is provided with a mating tooth arranged circumferentially, and the second switching gear is located on the path of the mating tooth. The trigger shaft rotates through the engagement of the mating tooth and the second switching gear.

[0011] Furthermore, a through hole is provided at the center point of the rotating gear for the trigger shaft to pass through, and a second mating part is provided at the through hole; a connecting part is provided at the tool holder corresponding to the sharpening pen outlet, and a connecting space is provided inside the connecting part, which communicates with the inside of the tool holder through the sharpening pen outlet; the third mating part is provided inside the connecting space; the length of the trigger shaft's moving path is less than the depth of the connecting space, and the first mating part is always in a mating state with the third mating part.

[0012] Furthermore, the forward rotation trigger assembly also includes a pen-feeding sensing mechanism that drives the trigger rod to abut against the second abutment part; a pen-feeding box is provided at the pencil-sharpening inlet, and the pen-feeding mechanism and the pen-feeding sensing mechanism are located inside the pen-feeding box; the pen-feeding box is provided with a pen-feeding opening corresponding to the pencil-sharpening inlet; the pen-feeding sensing mechanism includes a rotating rod located on the pencil-feeding path and a trigger block fixedly installed on the rotating rod; the pencil's entry and exit cause the rotating rod and the trigger block on it to rotate; one end of the trigger rod is located inside the pen-feeding box, and the movement path of the trigger rod intersects with the movement path of the trigger block.

[0013] Furthermore, the control module includes a start-up component, which includes a start-up switch connected to the drive motor and a pen-feeding detection mechanism; the pen-feeding detection mechanism is set inside the pen box to detect whether a pen is being fed in, and is connected to the start-up switch to control the start-stop state of the drive motor.

[0014] Furthermore, the pen-feeding detection mechanism includes a starter rod and a starter contact block; the starter contact block is movably mounted inside the pen-feeding box; a starter switch is fixedly mounted on a mounting base; the starter rod is movably mounted on the mounting base, with its two ends pointing to the starter switch and the starter contact block respectively, and the movement path of the starter rod corresponding to its axial direction; the movement path of the starter contact block intersects with the movement path of the starter rod and the pencil-feeding path; the starter switch includes a switch housing and a starter button and a spring plate disposed on the switch housing; one end of the spring plate is connected to the switch housing, the starter button is located at the angle between the spring plate and the switch housing; the other end of the spring plate is located on the movement path of the starter rod.

[0015] Furthermore, the switching assembly includes a reset post and a reset spring; both the switching rack and the mounting plate are provided with reset posts, and the two ends of the reset spring cooperate with the reset posts on the switching rack and the mounting plate, respectively. Beneficial effects

[0016] Compared to some electric pencil sharpeners on the market that use complex circuit modules to change the motor's direction to achieve automatic pen advance and retraction, this invention primarily relies on the triggering and switching of a mechanical structure to control the forward and reverse rotation of the drive motor. This avoids the design, manufacturing, and debugging processes of complex circuits, simplifying the overall product structure. The simplified structure reduces the number of electronic components used, lowering raw material costs. Furthermore, the maintenance of the mechanical structure is simpler and more intuitive than troubleshooting and repairing circuit faults, allowing maintenance personnel to more easily locate and resolve problems, reducing maintenance time and costs, and improving the product's economic efficiency and market competitiveness.

[0017] In this invention, the switch is clearly equipped with a forward and reverse button, corresponding to the forward and reverse control of the drive motor, respectively, making the motor direction control more precise. Meanwhile, since the reversing spring, reversing latch, and mounting plate are all located inside the switch housing, their operation is unaffected by the rotation of the switch housing. Through the cooperation of the reversing latch and the reversing spring, after the second abutment part disengages from the trigger rod during switch housing rotation, the first abutment part triggers the reverse button under the force of the reversing spring, thereby efficiently achieving the reverse rotation of the drive motor.

[0018] In this invention, an infeed / outfeed mechanism is installed at the pencil sharpening inlet. Utilizing the cooperation between the vortex and the first and second rotating shafts, as well as the meshing design of the vortex rack and impeller, automatic pencil feeding and retraction are achieved. A reversing trigger component is movably positioned at the pencil sharpening outlet along the path where the lead protrudes from the blade holder. This allows the reversing trigger component to be triggered when the lead protrudes from the blade holder to a certain position after sharpening. This, in turn, engages with a switching component, causing a switch to change position and disengage from the trigger rod, reversing the drive motor to achieve the pencil retraction action. This ensures the accuracy of the retraction timing, minimizing problems caused by premature or delayed retraction, further improving ease of use and sharpening effect. Furthermore, since the reversing trigger component is only triggered when the lead protrudes from the blade holder to a certain extent, the triggering of the electric pencil sharpener's retraction action depends on the pencil's condition. This allows for better adaptation to the sharpening needs of pencils in different states, avoiding problems such as insufficient sharpening of new pencils or over-sharpening of already sharpened pencils.

[0019] In this invention, the second switching gear is located on the active path of the reverse trigger component. When the pen tip protrudes from the blade holder and triggers the reverse trigger component, the reverse trigger component can quickly cooperate with the second switching gear to drive it to rotate. This allows the switching rack to immediately drive the switch housing and the switching switch to rotate, enabling the drive motor to respond quickly and reverse, ensuring the accuracy of the pen retraction timing.

[0020] In this invention, the trigger shaft is movably mounted on the mounting base, with one end engaging with the blade holder and positioned along the path where the pencil lead protrudes from the blade holder. After sharpening, the pencil lead protrudes from the blade holder and pushes the trigger shaft to move along its axial direction. The other end of the trigger shaft engages with the second switching gear, causing it to rotate and thus reversing the drive motor to achieve the pencil retraction action. This design can accurately capture the signal that the pencil sharpening is complete, allowing the electric pencil sharpener to trigger the drive motor to reverse at the appropriate time, minimizing problems such as over-sharpening or poor pencil retraction caused by inaccurate triggering timing.

[0021] In this invention, the engagement of the trigger shaft with the rotating gear and the tool holder is achieved through the first engagement part, the second engagement part, and the third engagement part; the trigger shaft also serves as a transmission shaft, reducing the need for independent transmission shafts in the electric pencil sharpener, and simplifying the overall structure while ensuring power transmission function; at the same time, this simple mechanical structure has high reliability and is not prone to failure.

[0022] In this invention, a through hole is provided at the center point of the rotating gear for the trigger shaft to pass through, and the second mating part is disposed at this through hole. This design ensures that the mating position between the trigger shaft and the rotating gear is at the center of the rotating gear, enabling stable power transmission to the trigger shaft when the rotating gear rotates. The arrangement of the connecting part and the connecting space further stabilizes the mating and power transmission between the trigger shaft and the tool holder.

[0023] In this invention, since the length of the trigger shaft's active path is less than the depth of the connecting space, and the first mating part is always in a mating state with the third mating part, it is ensured that the trigger shaft can stably transmit power to the tool holder throughout the entire process of sharpening and retracting the pen. Problems such as abnormal rotation of the tool holder or failure to retract the pen due to loosening or disengagement will not occur, thus ensuring the continuity and stability of the pen sharpening and retracting functions.

[0024] In this invention, when a pencil enters the pencil sharpening inlet from the pencil inlet / outlet opening, it drives the rotating rod and its trigger block to rotate. Since the moving path of the trigger rod intersects with the moving path of the trigger block, the trigger block pushes the trigger rod to move during rotation. The second abutment part is located on the moving path of the trigger rod, so the forward rotation button can be precisely triggered to make the drive motor rotate forward, thereby realizing automatic pencil feeding and automatic pencil sharpening.

[0025] In this invention, the mechanical sensing method, in which the pencil rotates when it enters the pencil sharpening inlet, causing the rotating rod and its trigger block to rotate, is less affected by environmental factors and has higher reliability compared to some electronic sensing methods.

[0026] In this invention, the starting component includes a pencil-feeding detection mechanism disposed within the pencil case. This mechanism can detect in real time whether a pencil is entering the pencil sharpening inlet. When a pencil enters, the detection mechanism quickly senses this change and, in conjunction with the start switch, automatically triggers the start switch to start the drive motor, thereby initiating the pencil feeding and sharpening process. When sharpening is complete and the pencil is removed, or when no pencil enters, the detection mechanism no longer detects a pencil feeding signal, and the drive motor automatically stops operating. This design achieves automated control of the pencil sharpening process, eliminating the need for manual operation of the drive motor by the user, greatly improving convenience and efficiency.

[0027] In this invention, one end of the spring is connected to the switch housing, and the start button is located at the angle between the spring and the switch housing; the other end of the spring is located on the movement path of the start rod. This structural design gives the start switch stable triggering characteristics; when the start rod moves toward the start switch under the action of the start contact and presses the spring, the spring will undergo elastic deformation, thereby stably pressing the start button and triggering the device to start; when the pencil is retracted or no pencil is inserted, the start contact is in the initial position and will not drive the start rod to move. At the same time, the spring can also drive the start rod to reset, so that the start switch will not be triggered, avoiding accidental start of the device when it is not in operation.

[0028] In this invention, after the retraction of the pen is completed and the motor stops outputting force, the reset pin and the reset spring work together to provide a stable reset force for the switching rack; pulling the switching rack back to the initial position along the original path, so that the switching switch is accurately reset to the corresponding control position, so that the next switching action can be carried out accurately and reliably. Attached Figure Description

[0029] Figure 1 This is a structural diagram of an electric pencil sharpener.

[0030] Figure 2 for Figure 1 Cross-sectional view.

[0031] Figure 3 for Figure 1 Structural diagram without tool holder cover.

[0032] Figure 4 This is a cross-sectional view of the pen case.

[0033] Figure 5 This is a structural diagram of the first area inside the pen box.

[0034] Figure 6 This is a structural diagram of the second area inside the pen box.

[0035] Figure 7 This is a structural diagram showing the connection between the vortex, the first rotating shaft, and the second rotating shaft.

[0036] Figure 8 This is a structural diagram showing the coordination of the tool holder, mounting base, control components, and switching components.

[0037] Figure 9 This is a cross-sectional view of the interface between the inversion trigger component, the switching component, and the tool holder.

[0038] Figure 10 This is a structural diagram of the trigger axis.

[0039] Figure 11 This is a structural diagram of the tool holder.

[0040] Figure 12 This is a structural diagram of a rotating gear.

[0041] Figure 13 This is a structural diagram of the connection between the start switch and the start lever.

[0042] Figure 14 This is a diagram showing the working structure of the switching component and the control component when the drive motor is rotating forward.

[0043] Figure 15 This is a diagram showing the interaction structure between the trigger rod and the control components when the drive motor rotates forward.

[0044] Figure 16 This is a diagram showing the working relationship between the switching component and the control component when the drive motor reverses.

[0045] Figure 17 for Figure 16 Structure diagram without mounting plate.

[0046] Figure 18 This is a diagram showing the interaction between the trigger lever and the control components when the drive motor reverses.

[0047] Figure 19 This is a structural diagram of the control component.

[0048] Figure 20 for Figure 19 Cross-sectional view.

[0049] Figure 21 This is a structural diagram of the adjustment knob.

[0050] Numbering on the map: 1. Mounting base; 2. Tool holder; 3. Drive motor; 4. Pencil feeding / ejection mechanism; 5. Control component; 6. Reverse trigger component; 7. Forward trigger component; 8. Switching component; 9. Starting component; 11. Transmission gear; 12. Rotary gear; 13. Mounting plate; 14. Assembly space; 15. Through opening; 16. Adjustment knob; 17. Adjustment switch; 18. Return spring; 21. Pencil sharpening inlet; 22. Pencil sharpening outlet; 23. Third mating part; 24. Connector 25. Pen holder in / out; 41. Scroll; 42. First rotating shaft; 43. Second rotating shaft; 44. Impeller; 45. Shaft; 46. Rubber wheel; 51. Switch housing; 52. Toggle switch; 53. Forward button; 54. Reverse button; 55. Reversing snap; 61. Trigger shaft; 71. Trigger rod; 72. Pen feed sensing mechanism; 81. Gear mounting shaft; 82. Switching rack; 83. First switching gear; 84. Second switching gear; 85. Reset Column; 91. Start switch; 92. Pen insertion detection mechanism; 100. Base plate; 101. Tool holder cover; 121. Second mating part; 161. Contact surface; 241. Connecting space; 251. Pen insertion / exit opening; 252. Partition; 253. First area; 254. Second area; 255. Mating opening; 256. Mating through hole; 257. Assembly bracket; 258. Mounting notch; 259. Mounting bracket; 411. Scroll rack; 511. Assembly plate; 512. Reversing spring; 551. Assembly part; 552. Assembly through hole; 553. First abutting part; 554. Second abutting part; 611. First mating part; 612. Mating tooth; 613. Limiting block; 614. Reset rod; 721. First rotating rod; 722. Second rotating rod; 723. Actuating block; 724. Contact block; 911. Switch housing; 912. Start button; 913. Spring; 921. Start rod; 922. Start contact block. Detailed Implementation

[0051] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments are merely specific descriptions of the present invention, and their purpose is to enable those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limitations on the present invention.

[0052] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0054] like Figure 1-21 As shown, a control module for an electric pencil sharpener is disclosed. The electric pencil sharpener includes a mounting base 1, a blade holder 2 mounted on the mounting base 1, and a drive motor 3. The drive motor 3 drives the blade holder 2 to rotate. The control module includes a control component 5 for controlling the rotation direction of the drive motor 3. The control component 5 includes a movable switch 52. The control module includes a forward rotation trigger component 7, which includes a movable trigger rod 71. The movement path of the trigger rod 71 intersects with the movement path of the switch 52. The trigger rod 71 abuts against the switch 52, causing the drive motor 3 to rotate forward. The control module includes a switching component 8 that drives the switch 52 to move. The switching component 8 drives the switch 52 to change position and disengages from the trigger rod 71, causing the drive motor 3 to rotate in reverse. Compared with some electric pencil sharpeners on the market that use complex circuit modules to change the motor direction to achieve automatic pencil advance and retraction, this invention mainly relies on the triggering and switching of a mechanical structure to achieve forward and reverse rotation control of the drive motor 3. This avoids the design, manufacturing, and debugging process of complex circuits, simplifying the overall structure of the product. Due to the simplified structure, the number of electronic components used is reduced, lowering raw material costs. Meanwhile, the maintenance of mechanical structures is simpler and more intuitive than the troubleshooting and repair of electrical faults. Maintenance personnel can more easily locate and solve problems, reducing maintenance time and costs, and improving the product's economy and market competitiveness.

[0055] In this invention, the control component 5 includes a switch housing 51 rotatably mounted on the mounting base 1, and a switch 52 fixedly disposed within the switch housing 51; the switching component 8 is connected to the switch housing 51 and drives it to move and change the position of the switch 52; the switch 52 is provided with a forward rotation button 53 and a reverse rotation button 54 for controlling the forward and reverse rotation of the drive motor 3; a rotatable reversing buckle 55 is mounted inside the switch housing 51, the reversing buckle 55 including a mounting part 551 and a first abutting part 553 and a second abutting part 554 symmetrically disposed on the outer surface of the mounting part 551; the reverse rotation button... Key 54 is located on the movement path of the first abutment part 553; the forward button 53 is located on the movement path of the second abutment part 554, and the movement path of the second abutment part 554 intersects with the movement path of the trigger rod 71; an assembly plate 511 is fixedly connected inside the switch housing 51, and the first abutment part 553 is located between the assembly plate 511 and the reverse button 54; a reversing spring 512 is also provided inside the switch housing 51, and the two ends of the reversing spring 512 are respectively connected and cooperated with the first abutment part 553 and the assembly plate 511, and apply a force to the first abutment part 553 toward the movement of the reverse button 54. The switch 52 is clearly provided with a forward button 53 and a reverse button 54, which correspond to the forward and reverse control of the drive motor 3, respectively, making the control of the motor direction more precise. Meanwhile, since the reversing spring 512, the reversing buckle 55 and the mounting plate 511 are all located inside the switch housing 51, their cooperation is not affected by the rotation of the switch housing 51. Through the cooperation of the reversing buckle 55 and the reversing spring 512, after the second abutment part 554 disengages from the trigger rod 71 when the switch housing 51 rotates, the first abutment part 553 triggers the reverse button 54 under the force of the reversing spring 512, thereby efficiently realizing the reverse rotation of the drive motor 3.

[0056] Preferably, the angle between the first abutting part 553 and the second abutting part 554 facing the surface of the switch 52 is an obtuse angle; thereby avoiding the situation where the forward and reverse buttons 54 are triggered at the same time.

[0057] In this embodiment, the switch housing 51 is connected to the mounting base 1 by a rotating shaft, thereby enabling the switch housing 51 to rotate under force.

[0058] In this invention, the two ends of the pencil holder 2 are respectively provided with a pencil-sharpening inlet 21 for the pencil to enter the pencil holder 2 and a pencil-sharpening outlet 22 for the pencil lead to exit the pencil holder 2; a pencil-feeding and retracting mechanism 4 is provided at the pencil-sharpening inlet 21; the pencil-feeding and retracting mechanism 4 includes a volute 41 that cooperates with and rotates with the pencil holder 2, and also includes a first rotating shaft 42 and a second rotating shaft 43 that cooperate with the volute 41; the rotation of the volute 41 drives the first rotating shaft 42 and the second rotating shaft 43 to rotate, the forward rotation of the volute 41 drives the two shafts to rotate inward to feed the pencil, and the reverse rotation of the volute 41 drives the two shafts to rotate outward to retract the pencil; by providing a pencil-feeding and retracting mechanism 4 at the pencil-sharpening inlet 21, and utilizing the cooperation between the volute 41 and the first rotating shaft 42 and the second rotating shaft 43, as well as the meshing design of the volute rack 411 and the impeller 44, the automatic feeding and retraction of the pencil is realized. The control module includes a reverse trigger component 6 that works in conjunction with the switching component 8 to activate the switching switch 52. The reverse trigger component 6 is movably positioned at the pencil sharpening outlet 22, along the path of the lead protruding from the blade holder 2. This movable positioning of the reverse trigger component 6 at the pencil sharpening outlet 22, along the path of the lead protruding from the blade holder 2, allows the reverse trigger component 6 to be triggered when the lead protrudes from the blade holder 2 to a certain position after sharpening. This triggers the reverse trigger component 6 in conjunction with the switching component 8, causing the switching switch 52 to change position and disengage from the trigger lever 71, thus reversing the drive motor 3 to achieve the pencil retraction action. This ensures the accuracy of the pencil retraction timing, minimizing problems caused by premature or delayed retraction, further improving ease of use and sharpening effect. Furthermore, since the reverse trigger component 6 is only triggered when the lead protrudes from the blade holder 2 to a certain extent, the triggering of the electric pencil sharpener's pencil retraction action depends on the pencil's condition. This allows for better adaptation to the sharpening needs of pencils in different conditions, avoiding problems such as insufficient sharpening of new pencils or over-sharpening of already sharpened pencils.

[0059] In this invention, the vortex 41 is fixedly connected or detachably connected via a threaded connection or other means to cooperate with the tool holder 2; the first rotating shaft 42 and the second rotating shaft 43 are parallel to each other; a through hole is provided at the center of the vortex 41, which is located between the first rotating shaft 42 and the second rotating shaft 43 and is on the same straight line as the pencil sharpening inlet 21, through which the pencil enters the tool holder 2 for cutting. The surface of the vortex 41 is provided with a turbine-shaped, arc-shaped vortex rack 411, and impellers 44 that mesh with the vortex rack 411 are provided on the first rotating shaft 42 and the second rotating shaft 43; the impellers 44 are located at different ends of the first rotating shaft 42 and the second rotating shaft 43; the teeth of the impellers 44 cooperate with the vortex rack 411 and transmit the rotational torque of the vortex 41 to the impellers 44, thereby driving the impellers 44 and the first rotating shaft 42 and the second rotating shaft 43 on which the impellers 44 are located to rotate. This allows the drive motor 3 to drive the tool holder 2 and the vortex 41 to rotate forward, simultaneously driving the first rotating shaft 42 and the second rotating shaft 43 to rotate inward to achieve pen insertion; and the drive motor 3 to drive the tool holder 2 and the vortex 41 to rotate in reverse, driving the first rotating shaft 42 and the second rotating shaft 43 to rotate outward to achieve pen output.

[0060] In this invention, the switching assembly 8 includes a switching gear, a gear mounting shaft 81, and a switching rack 82; a mounting plate 13 is fixedly mounted on the mounting base 1, and the switching rack 82 is movably mounted on the mounting plate 13; the gear mounting shaft 81 is rotatably mounted on the mounting base 1 and / or the mounting plate 13; the switching gear includes a first switching gear 83 and a second switching gear 84 mounted on the gear mounting shaft 81, the first switching gear 83 and the switching rack 82 meshing with each other; the second switching gear 84 is located on the active path of the reversing trigger assembly 6, the reversing trigger assembly 6 cooperates with the second switching gear 84, and drives the second switching gear 84 to rotate; the switching rack 82 is connected to the switch housing 51, and drives the switch housing 51 and the switching switch 52 to rotate. The second switching gear 84 is on the active path of the reverse trigger component 6. When the pen tip is exposed from the blade holder 2 and triggers the reverse trigger component 6, the reverse trigger component 6 can quickly cooperate with the second switching gear 84 to drive it to rotate. This allows the switching rack 82 to immediately drive the switch housing 51 and the switching switch 52 to rotate, so that the drive motor 3 can quickly respond to reverse the rotation and ensure the accuracy of the pen ejection timing.

[0061] In this invention, a transmission assembly is provided between the tool holder 2 and the drive motor 3. The transmission assembly includes a transmission gear 11 and a rotating gear 12 mounted on the mounting base 1. The transmission gear 11 engages with the drive motor 3 and the rotating gear 12. The reversing trigger assembly 6 includes a trigger shaft 61, which is movably mounted on the mounting base 1. The direction of movement of the trigger shaft 61 corresponds to its axial direction. The trigger shaft 61 passes through the rotating gear 12, and one end engages with the tool holder 2 and is located on the path where the pen refill protrudes from the tool holder 2. The trigger shaft 61 movably engages with the rotating gear 12 and the tool holder 2. The trigger shaft 61 is provided with a first engaging part 611 arranged along its axial direction. The rotating gear 12 and the tool holder 2 are respectively provided with a second engaging part 121 and a third engaging part 23 that engage with the first engaging part 611. The end of the trigger shaft 61 away from the tool holder 2 is provided with a circumferentially arranged engaging tooth 612, and the second switching gear 84 is located on the path of the engaging tooth 612. The trigger shaft 61 is driven to rotate through the engagement of the engaging tooth 612 and the second switching gear 84. The trigger shaft 61 is movably mounted on the mounting base 1, with one end engaging with the blade holder 2 and positioned along the path where the pencil lead protrudes from the blade holder 2. After sharpening, the pencil lead protrudes from the blade holder 2 and pushes the trigger shaft 61 to move along its axial direction. The other end of the trigger shaft 61 engages with the second switching gear 84 to rotate, thereby causing the drive motor 3 to reverse and achieve the pencil retraction action. This design can accurately capture the signal that the pencil sharpening is complete, allowing the electric pencil sharpener to trigger the drive motor 3 to reverse at the appropriate time, thus avoiding problems such as over-sharpening or poor pencil retraction caused by inaccurate triggering timing.

[0062] In this embodiment, a drive gear is provided on the motor shaft of the drive motor 3, and the transmission gear 11 meshes with the drive gear and the rotating gear 12 to realize the transmission of the force of the drive motor 3.

[0063] In this invention, the engagement of the trigger shaft 61 with the rotating gear 12 and the tool holder 2 is achieved through the first engagement part 611, the second engagement part 121 and the third engagement part 23; the trigger shaft 61 also serves as a transmission shaft, reducing the need for independent transmission shafts in the electric pencil sharpener, and simplifying the overall structure while ensuring the power transmission function; at the same time, this simple mechanical structure has high reliability and is not prone to failure.

[0064] In this invention, a through hole for the trigger shaft 61 to pass through is provided at the center point of the rotating gear 12, and the second mating part 121 is provided at this through hole. This design ensures that the mating position of the trigger shaft 61 and the rotating gear 12 is at the center of the rotating gear 12, so that power can be stably transmitted to the trigger shaft 61 when the rotating gear 12 rotates. A connecting part 24 is provided at the tool holder 2 corresponding to the sharpening outlet 22, and a connecting space 241 is provided inside the connecting part 24. The connecting space 241 communicates with the interior of the tool holder 2 through the sharpening outlet 22. The third mating part 23 is provided inside the connecting space 241. The provision of the connecting part 24 and the connecting space 241 makes the mating and power transmission between the trigger shaft 61 and the tool holder 2 more stable. The length of the active path of the trigger shaft 61 is less than the depth of the connecting space 241, and the first mating part 611 is always in a mating state with the third mating part 23; this ensures that the trigger shaft 61 can stably transmit power to the blade holder 2 throughout the entire process of sharpening and retracting the pen, and there will be no problems such as abnormal rotation of the blade holder 2 or failure to retract the pen due to loosening or disengagement of the mating, thus ensuring the continuity and stability of the pen sharpening and retracting functions.

[0065] In this embodiment, the axial direction of the trigger shaft 61 is consistent with that of the rotating gear 12, and the center points of the trigger shaft 61, the rotating gear 12, and the pencil sharpening outlet 22 are on the same straight line; thus, the transmission of the trigger shaft 61 is more stable. The length directions of the first mating part 611, the second mating part 121, and the third mating part 23 are consistent; the first mating part 611 is block-shaped, and both the second mating part 121 and the third mating part 23 are groove-shaped to match the first mating part 611; thus, a stable fit is achieved between the first mating part 611, the second mating part 121, and the third mating part 23.

[0066] In this utility model, the forward rotation trigger assembly 7 also includes a pen-feeding sensing mechanism 72 that drives the trigger rod 71 to abut against the second abutment part 554; a pen-feeding box 25 is provided at the pencil-sharpening inlet 21, and the pen-feeding mechanism 4 and the pen-feeding sensing mechanism 72 are disposed inside the pen-feeding box 25; the pen-feeding box 25 is provided with a pen-feeding opening 251 corresponding to the pencil-sharpening inlet 21; the pen-feeding sensing mechanism 72 includes a rotating rod located on the pencil-feeding path and a trigger block 723 fixedly disposed on the rotating rod; the pencil's entry and exit drive the rotating rod and the trigger block 723 to rotate; one end of the trigger rod 71 is located inside the pen-feeding box 25, and the movement path of the trigger rod 71 intersects with the movement path of the trigger block 723. When a pencil enters the pencil sharpening inlet 21 through the pencil inlet 251, it will cause the rotating rod and the trigger block 723 on it to rotate. Since the movement path of the trigger rod 71 intersects with the movement path of the trigger block 723, the trigger block 723 will push the trigger rod 71 to move during the rotation. The second abutment part 554 is located on the movement path of the trigger rod 71. In this way, the forward rotation button 53 can be accurately triggered to make the drive motor 3 rotate forward, thereby realizing automatic pencil feeding and automatic pencil sharpening.

[0067] In this invention, the rotating rod is rotatably mounted on the pencil case 25. When the pencil enters the pencil sharpening inlet 21, it drives the rotating rod and the trigger block 723 on it to rotate. This mechanical sensing method is less affected by environmental factors and has higher reliability compared to some electronic sensing methods.

[0068] In this embodiment, the rotating rod includes a first rotating rod 721 and a second rotating rod 722 symmetrically arranged. A trigger block 723 is fixedly mounted on either the first rotating rod 721 or the second rotating rod 722, corresponding to the trigger rod 71. Both the first rotating rod 721 and the second rotating rod 722 are equipped with gears, and these gears mesh with each other. This gear transmission method provides stable and reliable power transmission, thereby stably transmitting force to the trigger rod 71. A passage gap is provided between the first rotating rod 721 and the second rotating rod 722 to allow the pencil to pass through and rotate both rods. Preferably, both the first rotating rod 721 and the second rotating rod 722 are equipped with toothed contact blocks 724. The passage gap is located between the contact blocks 724, which further stabilize the pencil, allowing it to move in and out more stably, and transmitting force more stably to the first rotating rod 721 and the second rotating rod 722.

[0069] In this invention, the control module includes a starting component 9, which comprises a start switch 91 connected to the drive motor 3 and a pencil-feeding detection mechanism 92. The pencil-feeding detection mechanism 92 is located within the pencil case 25 to detect the presence or absence of a pencil and works in conjunction with the start switch 91 to control the start and stop states of the drive motor 3. The starting component 9 includes the pencil-feeding detection mechanism 92 located within the pencil case 25. This mechanism can detect in real time whether a pencil has entered the pencil sharpening inlet 21. When a pencil enters, the pencil-feeding detection mechanism 92 quickly senses this change and, in conjunction with the start switch 91, automatically triggers the start switch 91 to start the drive motor 3, thus initiating the pencil-feeding and sharpening process. When sharpening is complete and the pencil has exited, or when no pencil enters, the pencil-feeding detection mechanism 92 no longer detects a pencil-feeding signal, and the drive motor 3 automatically stops operating. This design achieves automated control of the pencil sharpening process, eliminating the need for manual operation of the drive motor 3 by the user, greatly improving convenience and efficiency.

[0070] In this utility model, the pen feeding detection mechanism 92 includes a starter rod 921 and a starter contact 922; the starter contact 922 is movably mounted inside the pen box 25; the starter switch 91 is fixedly mounted on the mounting base 1; the starter rod 921 is movably mounted on the mounting base 1, with its two ends pointing to the starter switch 91 and the starter contact 922 respectively, and the movement path of the starter rod 921 corresponds to its axial direction; the movement path of the starter contact 922 intersects with the movement path of the starter rod 921 and the pencil feeding path; the starter switch 91 includes a switch housing 911 and a starter button 912 and a spring 913 disposed on the switch housing 911; one end of the spring 913 is connected to the switch housing 911, the starter button 912 is located at the angle between the spring 913 and the switch housing 911; the other end of the spring 913 is located on the movement path of the starter rod 921. This structural design gives the start switch 91 stable triggering characteristics. When the start lever 921 moves toward the start switch 91 under the action of the start contact block 922 and presses the spring 913, the spring 913 will undergo elastic deformation, thereby stably pressing the start button 912 and triggering the device to start. When the pencil is retracted or there is no pencil in, the start contact block 922 is in the initial position and will not drive the start lever 921 to move. At the same time, the spring 913 can also drive the start lever 921 to reset, so that the start switch 91 will not be triggered, thus avoiding accidental start of the device when it is not in operation.

[0071] In this invention, the switching assembly 8 includes a reset post 85 and a reset spring; both the switching rack 82 and the mounting plate 13 are provided with reset posts 85, and the two ends of the reset spring respectively cooperate with the reset posts 85 on the switching rack 82 and the mounting plate 13. When the retraction of the pen is completed and the motor stops outputting force, the reset post 85 and the reset spring cooperate to provide a stable reset force for the switching rack 82; pulling the switching rack 82 back to the initial position along the original path, so that the switching switch 52 is accurately reset to the corresponding control position, so that the next switching action can be performed accurately and reliably.

[0072] In this utility model, the transmission gear 11 and the rotating gear 12 are assembled in the mounting base 1; the switching component 8 and the mounting plate 13 are assembled outside the mounting base 1 and are located on the side of the mounting base 1 away from the tool holder 2; the mounting base 1 is provided with an assembly space 14, which communicates with the through hole and connecting space 241 of the rotating gear 12, and the trigger shaft 61 is disposed in the assembly space 14; the mounting base 1 is also provided with an opening 15, allowing one end of the trigger shaft 61 with the mating teeth 612 to protrude from the assembly space 14 and engage with the second switching gear 84; the portion of the trigger shaft 61 located in the assembly space 14 is also provided with a limiting block 613 with a diameter larger than the inner diameter of the opening 15, thereby restricting the movement of the trigger shaft 61 by the setting of the limiting block 613, and preventing the first mating part 611 from disengaging from the third mating part 23.

[0073] This invention includes a reset mechanism that drives the trigger shaft 61 to reset. The reset mechanism includes a reset rod 614 and a reset switch. The reset rod 614 is connected to the trigger shaft 61, and the reset switch cooperates with the reset rod 614 to push the trigger shaft 61 toward the tool holder 2. After the electric pencil sharpener completes operations such as sharpening or retracting the pencil, the user triggers the reset switch to return the reset rod 614 to the trigger shaft 61, preparing it for the next normal operation.

[0074] The electric pencil sharpener includes an adjustment mechanism, which comprises an adjustment knob 16 for adjusting the position of the second switching gear 84 and an adjustment switch 17 for controlling the adjustment knob 16. The two ends of the gear mounting shaft 81 are rotatably connected to the mounting base 1 and the mounting plate 13, respectively, and the gear mounting shaft 81 can move along its own axial direction. The adjustment knob 16 is rotatably mounted on the mounting plate 13. The adjustment switch 17 engages with the outer surface of the adjustment knob 16 and drives the adjustment knob 16 to rotate. One end of the gear mounting shaft 81 passes through the mounting plate 13, and the inner surface of the adjustment knob 16 is provided with an inclined contact surface 161 that engages with the end of the gear mounting shaft 81. A return spring 18 is also sleeved on the gear mounting shaft 81, and the two ends of the return spring 18 abut against the surfaces of the mounting base 1 and the second switching gear 84 facing the mounting base 1, respectively. This allows the second switching gear 84 to reset after the adjustment knob 16 is reset. When the adjustment switch 17 rotates the adjustment knob 16, the inclined contact surface 161 will move relative to the gear mounting shaft 81. Due to the special design of the inclined contact surface 161, the gear mounting shaft 81 can move precisely along its own axial direction, thereby achieving precise adjustment of the position of the second switching gear 84; thereby changing the meshing position of the second switching gear 84 and the mating gear 612 to control the length of movement required by the trigger shaft 61, so as to accurately determine the length of the pencil lead protruding from the blade holder 2, so that the electric pencil sharpener can adjust the thickness of the pencil cut.

[0075] The electric pencil sharpener includes a base plate 100 and a housing; the mounting base 1 is fixed to the base plate 100; the housing includes a blade holder cover 101 that surrounds the blade holder 2, the trigger rod 71 and the start rod 921, thereby protecting the three components; one end of the blade holder cover 101 is fixedly connected to the mounting base 1, and the pencil case 25 is fixed to the other end of the blade holder cover 101.

[0076] In this embodiment, the pen holder 25 has an internal space, which is divided into a first region 253 and a second region 254 by a partition 252. The second region 254 is located between the knife holder cover 101 and the first region 253. The vortex 41, the first rotating shaft 42 and the second rotating shaft 43 of the pen feeding mechanism 4 are located in the second region 254. The first rotating rod 721 and the second rotating rod 722 of the pen feeding sensing mechanism 72 are located in the first region 253. The activation contact block 922 is movably located in the second region 254. The pen inlet / outlet box 25 has a mating opening 255 on its surface facing the tool holder 2, allowing the end of the vortex plate 41 away from the first rotating shaft 42 and the second rotating shaft 43 to connect to the tool holder 2; the pen inlet / outlet opening 251 is located on the surface of the pen inlet / outlet box 25 away from the tool holder 2; the partition plate 252 has a mating through hole 256 that connects the first region 253 and the second region 254; the start contact block 922 is movably mounted on the partition plate 252 and is correspondingly set to the mating through hole 256; the pen inlet / outlet opening 251, the mating through hole 256, the mating opening 255 and the pen sharpening inlet 21 are correspondingly set and are on the same straight line. A mounting bracket 257 is provided in the second region 254. The mounting bracket 257 has an installation notch 258. A partition 252 is mounted on the mounting bracket 257 to close the installation notch 258 and form an installation space. The first rotating shaft 42 and the second rotating shaft 43 both include a shaft body 45. The two ends of the shaft body 45 are rotatably located in the installation space. A rubber wheel 46 is sleeved on the shaft body 45. The rubber wheel 46 increases the friction and stably drives the pencil to move in and out of the pencil. The impeller 44 is fixed on the shaft body 45. A mounting bracket 259 is provided on the surface of the partition 252 corresponding to the first region 253. The first rotating rod 721 and the second rotating rod 722 are rotatably mounted on the mounting bracket 259. A through hole 256 is located between the first rotating shaft 42 and the second rotating shaft 43, and between the first rotating rod 721 and the second rotating rod 722.

[0077] It is worth noting that the other technical solutions of this utility model are all existing technologies, and therefore will not be described in detail.

[0078] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the concept of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A control module for an electric pencil sharpener, the electric pencil sharpener comprising a mounting base and a blade holder and a drive motor mounted on the mounting base, the drive motor driving the blade holder to rotate; characterized in that, The control module includes a control component that controls the rotation direction of the drive motor, and the control component includes a movable switch; The control module includes a forward rotation trigger component, which includes a movable trigger rod whose movement path intersects with the movement path of the changeover switch; the trigger rod abuts against the changeover switch to cause the drive motor to rotate forward. The control module includes a switching component that drives the switch to change position and disengages from the trigger lever, causing the drive motor to reverse.

2. The control module of the electric pencil sharpener according to claim 1, characterized in that, The control component includes a switch housing rotatably mounted on a mounting base, and a changeover switch fixedly disposed inside the switch housing; the switching component is connected to the switch housing and drives it to move and change the position of the changeover switch; The switch has a forward and a reverse button for controlling the forward and reverse rotation of the drive motor. A rotatable reversing latch is installed inside the switch housing. The reversing latch includes an assembly part and a first and a second abutment part symmetrically arranged on the outer surface of the assembly part. The reverse button is located on the movement path of the first abutment part; the forward button is located on the movement path of the second abutment part, and the movement path of the second abutment part intersects with the movement path of the trigger rod. An assembly plate is fixedly connected inside the switch housing, and the first abutment part is located between the assembly plate and the reverse button. A reversing spring is also installed inside the switch housing, with its two ends connected to the first abutment part and the assembly plate respectively, applying a force to the first abutment part towards the movement of the reverse button.

3. The control module of the electric pencil sharpener according to claim 2, characterized in that, The two ends of the pencil holder are respectively provided with a sharpening inlet for the pencil to enter the pencil holder and a sharpening outlet for the pencil lead to exit the pencil holder; The pencil sharpening inlet is equipped with a pencil feeding and discharging mechanism; the pencil feeding and discharging mechanism includes a scroll that cooperates with and rotates with the blade holder, and also includes a first rotating shaft and a second rotating shaft that cooperate with the scroll; the rotation of the scroll drives the first rotating shaft and the second rotating shaft to rotate, the forward rotation of the scroll drives the two shafts to rotate inward to feed the pencil, and the reverse rotation of the scroll drives the two shafts to rotate outward to discharge the pencil. The control module includes a reverse trigger component that works with the switching component to drive the switching switch; the reverse trigger component is movably disposed at the pencil sharpening outlet and is located on the active path of the pencil lead protruding from the blade holder.

4. The control module of the electric pencil sharpener according to claim 3, characterized in that, The switching assembly includes a switching gear, a gear mounting shaft, and a switching rack; a mounting plate is fixedly mounted on the mounting base, and the switching rack is movably mounted on the mounting plate; the gear mounting shaft is rotatably mounted on the mounting base and / or the mounting plate; the switching gear includes a first switching gear and a second switching gear mounted on the gear mounting shaft, and the first switching gear and the switching rack mesh with each other; The second switching gear is located on the active path of the reverse trigger component. The reverse trigger component cooperates with the second switching gear and drives the second switching gear to rotate. The switching rack is connected to the switch housing and drives the switch housing and the switching switch to rotate.

5. The control module of the electric pencil sharpener according to claim 4, characterized in that, A transmission assembly is provided between the tool holder and the drive motor. The transmission assembly includes a transmission gear and a rotary gear mounted on the mounting base. The transmission gear cooperates with the drive motor and the rotary gear. The reverse trigger assembly includes a trigger shaft that is movably mounted on a mounting base, with the direction of movement of the trigger shaft corresponding to its axial direction; the trigger shaft passes through a rotating gear, and one end of it engages with the tool holder and is located on the path where the pen refill protrudes from the tool holder; the trigger shaft movably engages with the rotating gear and the tool holder. The trigger shaft is provided with a first mating part arranged along its axial direction; the rotating gear and the tool holder are respectively provided with a second mating part and a third mating part that mate with the first mating part; The trigger shaft has a mating tooth arranged circumferentially at the end away from the tool holder, and the second switching gear is located on the moving path of the mating tooth; the trigger shaft drives the second switching gear to rotate through the mating tooth and the second switching gear.

6. The control module of the electric pencil sharpener according to claim 5, characterized in that, The rotating gear has a through hole at its center point for the trigger shaft to pass through, and the second mating part is located at the through hole; the tool holder has a connecting part at the sharpening pen outlet, and a connecting space is provided inside the connecting part, which communicates with the inside of the tool holder through the sharpening pen outlet; the third mating part is located inside the connecting space; the length of the trigger shaft's movement path is less than the depth of the connecting space, and the first mating part is always in a mating state with the third mating part.

7. The control module of the electric pencil sharpener according to claim 6, characterized in that, The forward rotation trigger assembly also includes a pen-feeding sensing mechanism that drives the trigger rod to abut against the second abutment part; The pencil sharpening inlet is equipped with a pencil box, and the pencil feeding mechanism and the pencil feeding sensor mechanism are located inside the pencil box; the pencil box is equipped with a corresponding pencil feeding opening. The pencil feeding sensing mechanism includes a rotating rod located on the pencil feeding path and a trigger block fixedly mounted on the rotating rod; the pencil feeding and moving causes the rotating rod and the trigger block to rotate; one end of the trigger rod is located inside the pencil box, and the movement path of the trigger rod intersects with the movement path of the trigger block.

8. The control module of the electric pencil sharpener according to claim 7, characterized in that, The control module includes a start-up component, which includes a start-up switch connected to the drive motor and a pen-feeding detection mechanism. The pen-feeding detection mechanism is located inside the pen box to detect whether a pen is being fed in, and is connected to the start-up switch to control the start and stop states of the drive motor.

9. The control module of the electric pencil sharpener according to claim 8, characterized in that, The pen feeding detection mechanism includes a starter rod and a starter contact block; the starter contact block is movably mounted inside the pen box; a starter switch is fixedly mounted on a mounting base; the starter rod is movably mounted on the mounting base, with its two ends pointing to the starter switch and the starter contact block respectively, and the movement path of the starter rod corresponding to its axial direction; the movement path of the starter contact block intersects with the movement path of the starter rod and the pencil feeding path; the starter switch includes a switch housing and a starter button and a spring plate disposed on the switch housing; one end of the spring plate is connected to the switch housing, and the starter button is located at the angle between the spring plate and the switch housing; the other end of the spring plate is located on the movement path of the starter rod.

10. The control module of the electric pencil sharpener according to claim 9, characterized in that, The switching assembly includes a reset post and a reset spring; both the switching rack and the mounting plate are equipped with reset posts, and the two ends of the reset spring cooperate with the reset posts on the switching rack and the mounting plate, respectively.

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