Dot matrix smart pen

Abstract

The application relates to the technical field of dot matrix intelligent pen, and relates to a dot matrix intelligent pen which comprises a pen body assembly and a control assembly; the pen body assembly is provided with a connecting cavity; the control assembly comprises a circuit board, the end of the circuit board is provided with a connecting contact point, the end and the inner wall of the connecting cavity enclose a plug female seat, and the connecting contact point is located in the plug female seat and used for electrically connecting with an external connector. In the dot matrix intelligent pen, the connecting contact point is directly arranged at the end of the circuit board, the end and the inner wall of the connecting cavity enclose the plug female seat, the external connector can be directly electrically connected with the circuit board, the structure of the embodiment cancels the independent plug female seat element, the space originally used for mounting the independent plug female seat is reduced, the internal arrangement of the pen body is more compact, the diameter of the pen body is effectively prevented from increasing while the charging and data transmission functions are realized, and a good holding feeling and writing experience are maintained.

Description

Technical Field

[0001] This application relates to the field of dot matrix smart pen technology, and more particularly to a dot matrix smart pen. Background Technology

[0002] Existing smart pens typically have a separate plug and socket component inside the pen body, which is connected to a circuit board via wires or soldering to enable charging and data transmission. This type of structure can meet basic electrical connection requirements, but it generally relies on specialized connector assemblies, which occupy a certain amount of space in the pen body in terms of structure, layout, and assembly.

[0003] However, when existing smart pens use independent plug and socket components, their size restricts the internal layout of the pen body. The plug, socket, and circuit board are often difficult to arrange compactly within a limited space, easily increasing the pen's diameter and affecting the grip and writing experience. Furthermore, as an independent component, the plug and socket's fixing method is relatively complex, involving surface mount technology, soldering, or bracket installation processes, increasing the overall structural complexity. At the same time, the use of independent plugs and sockets also increases the number of materials and assembly steps, leading to higher manufacturing costs. Utility Model Content

[0004] In view of this, this application provides a dot-matrix smart pen to solve the problems of poor compactness and complex structure caused by the separate female connector in existing smart pens.

[0005] The first aspect of this application provides a dot-matrix smart pen, comprising: The pen body assembly has a connecting cavity; and The control component includes a circuit board, the end of which is provided with a connection contact point. The end and the inner wall of the connection cavity form a plug and female socket, and the connection contact point is located inside the plug and female socket. The connection contact point is used for electrical connection with an external connector.

[0006] In one possible implementation, the pen assembly includes a pen housing structure and a pen refill, the connecting cavity is disposed within the pen housing structure, the pen refill is at least partially housed within the pen housing structure, and the pen refill is signal-connected to the control assembly.

[0007] In one possible implementation, the pen casing structure includes a pen body, a support frame, and a tail shell, wherein the support frame is detachably connected to the pen body, and the tail shell is fitted onto the pen body and the support frame; the circuit board is detachably connected to the pen body.

[0008] In one possible implementation, the pen body is provided with a first connecting groove, the support frame is provided with a second connecting groove, the tail shell is provided with a connecting hole, the first connecting groove and the second connecting groove are enclosed to form the connecting cavity, and the connecting hole communicates with the connecting cavity. And / or, the pen body assembly further includes a cover that covers the outside of the pen housing structure.

[0009] In one possible implementation, the tail shell is provided with a snap-fit ​​portion, the pen body and / or the support frame is provided with a fixing portion, the snap-fit ​​portion engages with the fixing portion, and the snap-fit ​​portion and the fixing portion are arranged along the circumferential direction of the pen shell structure.

[0010] In one possible implementation, a guide portion is provided on the inner side of the tail shell, and a guide groove is provided on the outer wall of the pen body and / or the outer wall of the support frame. The guide portion and the guide groove extend along the length direction of the pen shell structure, and the dimension of the guide groove in the circumferential direction of the pen shell structure is larger than the dimension of the guide portion. The guide portion is used to slide with the guide groove.

[0011] In one possible implementation, the fixing part is located inside the guide groove, and the snap-fit ​​part is used to move from the guide groove to one side of the fixing part, and can snap-fit ​​with the fixing part when the tail shell rotates relative to the pen body; And / or, the pen body assembly further includes a limiting member, the tail shell has a first limiting hole, the pen body and / or the support frame has a second limiting hole, the first limiting hole and the second limiting hole are correspondingly provided, and the limiting member is used to be inserted into the first limiting hole and the second limiting hole respectively.

[0012] In one possible implementation, the control component further includes a sensing module electrically connected to the circuit board and connected to the pen refill, the sensing module being used to acquire displacement signals of the pen refill.

[0013] In one possible implementation, the sensing module includes a pressure sensor and a movable seat, the pressure sensor being electrically connected to the circuit board, the movable seat being movably connected to the pen shell structure, and the pressure sensor being used to acquire the pressure signal of the movable seat.

[0014] In one possible implementation, the smart pen further includes a camera component, the pen body component having a shooting hole, the camera component being disposed inside the pen body component, and the camera component being used to acquire image signals from the shooting hole.

[0015] Implementing the embodiments of this application has the following beneficial effects: In the dot-matrix smart pen of this embodiment, a connection contact point is directly set at the end of the circuit board, and the end is used to form a plug and socket by surrounding the inner wall of the connecting cavity, so that the external connector can be directly electrically connected to the circuit board. The structure of this embodiment eliminates the independent plug and socket component, reducing the space occupied by the original independent plug and socket, making the internal layout of the pen body more compact. Thus, while realizing charging and data transmission functions, it effectively avoids increasing the pen body diameter, maintaining a good grip and writing experience.

[0016] The dot-matrix smart pen of this embodiment eliminates the need for independent plug and socket components, thus removing related fixing, soldering, or surface mount processes. This simplifies the internal structure of the pen, reduces the number of components, and streamlines the assembly process, effectively lowering the overall manufacturing difficulty. In this embodiment, by reducing the use of additional materials like independent plugs and sockets, material costs are effectively reduced, and related assembly steps are minimized, thereby effectively controlling the overall manufacturing cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective view of the smart pen in an embodiment of the present invention is shown; Figure 2 It shows along Figure 1 Sectional view of AA; Figure 3 It shows along Figure 2 Sectional view of BB; Figure 4 An exploded view of a portion of the structure of the smart pen in an embodiment of this utility model is shown; Figure 5 An exploded view of the smart pen in an embodiment of this utility model is shown; Figure 6 A partial structural schematic diagram of the smart pen in an embodiment of this utility model is shown; Figure 7 A schematic diagram of the tail shell structure in an embodiment of this utility model is shown.

[0019] Figure label: 10. Dot-matrix smart pen; 100. Pen body assembly; 110. Pen shell structure; 111. Pen body; 1111. First connecting groove; 1112. Shooting hole; 1113. First fixing part; 1114. First guide groove; 1115. Second limiting hole; 112. Support frame; 1121. Second connecting groove; 1122. Second fixing part; 1123. Second guide groove; 113. Tail shell; 1131. Connecting hole; 1132. Snap-fit ​​part; 1133. Guide part; 1134. First limiting hole; 120. Pen refill; 130. Cover; 140. Limiting component; 210. Circuit board; 211. First plate; 2111. Connecting contact point; 212. Second plate; 213. Connector; 221. Pressure sensor; 222. Movable seat; 230. Battery; 300. Camera assembly; 310. Filter; 320. Camera module; 330. Lens mount. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Existing smart pens typically have a separate plug and socket component inside the pen body, which is connected to a circuit board via wires or soldering to enable charging and data transmission. This type of structure can meet basic electrical connection requirements, but it generally relies on specialized connector assemblies, which occupy a certain amount of space in the pen body in terms of structure, layout, and assembly.

[0022] However, when existing smart pens use independent plug and socket components, their size restricts the internal layout of the pen body. The plug, socket, and circuit board are often difficult to arrange compactly within a limited space, easily increasing the pen's diameter and affecting the grip and writing experience. Furthermore, as an independent component, the plug and socket's fixing method is relatively complex, involving surface mount technology, soldering, or bracket installation processes, increasing the overall structural complexity. At the same time, the use of independent plugs and sockets also increases the number of materials and assembly steps, leading to higher manufacturing costs.

[0023] Based on this, see Figures 1 to 7As shown, this utility model embodiment provides a dot matrix smart pen 10, which includes a pen body assembly 100 and a control assembly; the pen body assembly 100 has a connection cavity; the control assembly includes a circuit board 210, the end of the circuit board 210 is provided with a connection contact point 2111, the end and the inner wall of the connection cavity form a plug and socket, and the connection contact point 2111 is located inside the plug and socket, and the connection contact point 2111 is used for electrical connection with an external connector.

[0024] In the dot-matrix smart pen 10 of this embodiment, a connection contact point 2111 is directly provided at the end of the circuit board 210, and the end is used to form a plug and socket by surrounding the inner wall of the connecting cavity, so that the external connector can be directly electrically connected to the circuit board 210. The structure of this embodiment eliminates the independent plug and socket component, reduces the space occupied by the original independent plug and socket, and makes the internal arrangement of the pen body more compact. Thus, while realizing the charging and data transmission functions, it effectively avoids the increase of the pen body diameter, maintaining a good grip and writing experience.

[0025] The dot-matrix smart pen 10 of this embodiment eliminates the need for independent plug and socket components, thus eliminating related fixing, soldering, or surface mount processes. This simplifies the internal structure of the pen, reduces the number of components, and streamlines the assembly process, effectively lowering the overall manufacturing difficulty. In the structure of this embodiment, by reducing the use of additional materials such as independent plugs and sockets, material costs are effectively reduced, and related assembly steps are minimized, thereby effectively controlling the overall manufacturing cost.

[0026] Specifically, an extended structure is formed at the end of the circuit board 210, and a connection contact point 2111 is located at this end. This end, together with the inner wall of the connecting cavity, forms the aforementioned plug-in socket. This extended structure can be designed according to the shape of the internal space of the pen assembly 100; for example, it can be designed as a sheet-like extension or an extension with reinforcing ribs to improve the overall structural stability of the end. The material of the extended structure is consistent with that of the circuit board 210, allowing it to be formed in one step during processing, reducing the use of additional components. Furthermore, the length of this extended section can be set according to the required insertion depth to ensure that the external male connector can fully contact the connection contact point 2111 when inserted, thereby enabling the transmission of charging current and data signals under stable contact conditions.

[0027] The overall strength of the plug and socket can be ensured by providing a connecting cavity on the pen body assembly 100. The inner wall of the connecting cavity can be made of reinforcing material or its mechanical strength can be improved by local thickening, thereby withstanding the mechanical stress caused by the insertion and extraction forces during the insertion and removal of the external connector, and preventing the connector from loosening or the connecting cavity from deforming. In addition, the connecting cavity can be set with a circular, elliptical or rectangular cross-sectional structure as needed to adapt to different end structures.

[0028] During connection, the end is inserted into the interior of the external male connector, making the connecting contact point 2111 electrically connected to the connector. After the external male connector is inserted, its metal spring or elastic contact will form linear or surface contact with the connecting contact point 2111, enabling the circuit board 210 to achieve a stable electrical connection. Under the action of insertion force, the connecting contact point 2111 can maintain a certain elastic deformation, thereby improving contact reliability and reducing poor contact caused by vibration.

[0029] In a preferred embodiment, both the cross-section of the connecting cavity and the cross-section of the end can be symmetrical, forming a TYPE-C female connector. The symmetrical structure ensures that the external connector does not need to distinguish direction during insertion, reducing alignment requirements during insertion and removal, and making it more convenient to use. The symmetrical cross-section also ensures uniform stress distribution, reducing localized wear. Furthermore, the TYPE-C structure has a larger number of contacts, providing higher signal transmission and current carrying capacity, thereby improving the performance of the dot-matrix smart pen 10 in terms of charging speed and data transmission rate.

[0030] The symmetrical design of the Type-C female connectors eliminates the need to distinguish between the front and back during connection, making it convenient to use. Furthermore, the overall compact size allows for a smaller outer diameter of the pen body assembly 100. In practical implementation, the wall thickness of the connection cavity can be designed according to strength requirements. For example, the wall thickness can be reduced while still meeting strength requirements, further minimizing the outer diameter of the pen body assembly 100 and providing better grip comfort for the dot-matrix smart pen 10. Simultaneously, the smaller plug and female connector structure reduces the insertion stroke, requiring less force from the user during insertion and removal, thus improving ease of use.

[0031] Furthermore, the control assembly also includes a battery 230, which is electrically connected to the circuit board 210 and is used to power the circuit board 210.

[0032] In specific embodiments, battery 230 can be a sheet lithium battery, a cylindrical lithium battery, or a polymer lithium battery, and the specific type can be selected according to the internal space layout of the pen assembly 100. For example, when the pen assembly 100 has a long and narrow internal structure, a sheet or strip polymer lithium battery can be selected to conform to the shape of the internal cavity, which is beneficial to improving space utilization; if the design requires higher energy density, a cylindrical lithium battery can be selected to obtain higher battery capacity. The specific type of battery 230 is not limited here; any battery that can provide a stable power supply to the circuit board 210 can be considered as an option for battery 230.

[0033] The battery 230 is connected to the circuit board 210 via a conductive structure, which can be a flexible ribbon cable, soldered wires, or metal terminals. Using a flexible ribbon cable ensures a stable electrical connection even when there is relative displacement between the battery 230 and the circuit board 210, making it suitable for structures requiring some installation flexibility. Using soldered wires improves the vibration resistance of the electrical connection, adapting to the continuous micro-vibrations generated during writing. Metal terminals facilitate future maintenance or battery 230 replacement. All connection methods enable the battery 230 to stably transmit power to the circuit board 210.

[0034] Furthermore, the battery 230 can be secured during installation using a positioning groove, a pressure plate structure, or an adhesive structure. The positioning groove restricts the axial and radial movement of the battery 230, ensuring its stable position even under external impacts or vigorous pen movements. The pressure plate structure provides additional constraint within the pen assembly 100, enhancing installation stability. The adhesive structure facilitates assembly and is suitable for designs requiring only one-time fixation. All these methods ensure that the battery 230 maintains a reliable position within the pen body over the long term, preventing unstable electrical connections or safety hazards caused by loosening.

[0035] In one embodiment, the circuit board 210 includes a first plate 211, a second plate 212, and a connector 213, with the battery 230 disposed between the first plate 211 and the second plate 212. This split design facilitates the internal layout of the circuit board 210 within the pen assembly 100. Specifically, the connector 213 can be a flexible circuit board that can be attached to the outer surface of the battery 230 during assembly, thereby giving the pen assembly 100 a smaller overall outer diameter.

[0036] In this embodiment, the first plate 211 and the second plate 212 can be independently designed according to the internal cavity shape of the pen assembly 100. Their outer contours can be formed into sheet-like, arc-shaped, or partially chamfered structures to adapt to the curved surface or narrow space structure inside the pen assembly 100. By dividing the circuit board 210 into two independent units, the first plate 211 and the second plate 212, the layout of each plate can be more flexible, allowing components to be reasonably arranged even in spaces with limited space. This reduces the height accumulation caused by component stacking, and thus facilitates the control of the outer diameter of the pen assembly 100. If the circuit board 210 is designed as a single integral plate, the presence of a battery 230, sensor module, or other functional modules inside may make it difficult to fully utilize the narrow space, increasing the diameter of the pen assembly 100 and affecting the grip and lightweight design. Therefore, a split design is more conducive to space utilization.

[0037] In this structure, connector 213 is disposed between the first plate 211 and the second plate 212 to achieve electrical connection between them. When connector 213 is a flexible circuit board, its substrate can be a flexible material such as polyimide or polyester film. The flexible circuit board can maintain the integrity of the wires when bent, making it easy to adapt to the curved surface formed on the outer surface of the battery 230. When the battery 230 is installed between the first plate 211 and the second plate 212, the flexible circuit board can be attached along the outer surface of the battery 230, so that the circuit connection path naturally transitions along the shape of the battery 230, thereby reducing the extra reserved wiring space and allowing the outer diameter of the pen assembly 100 to be further narrowed. If connector 213 is a rigid plate, it cannot provide the necessary deformation in the bending area, which may lead to assembly difficulties or even stress concentration at the solder joints, thereby affecting the reliability of the circuit board 210. Therefore, setting connector 213 as a flexible circuit board can improve assembly compliance.

[0038] The distance between the first plate 211 and the second plate 212 can be determined according to the thickness of the battery 230, so that the battery 230 can be tightly clamped between them. The battery 230 can be fixed to the first plate 211 and the second plate 212 by a buffer pad, adhesive structure or positioning structure to prevent the battery 230 from moving in the cavity due to vibration and impact during long-term use, thereby improving structural stability. With this layout, the battery 230 does not need a separate fixing bracket and can be stably embedded in the structural area of ​​the circuit board 210, which helps to reduce the number of components and improve the internal structural layout.

[0039] Furthermore, the first board 211 can primarily house the core circuits, including the main control chip, power management module, and charging module, while the second board 212 can be used to house functional modules such as pressure sensing components, attitude detection circuits, or Bluetooth communication elements. The positions of each module on the first and second boards 211 and 212 can be adjusted as needed. Signal and power transmission are achieved through a flexible connector 213, allowing functional modules to be distributed across different spatial areas. This optimizes heat dissipation paths and avoids signal crosstalk caused by high-interference components being too close together. If all components are concentrated on the same board, electromagnetic interference may increase, potentially leading to signal quality degradation. Therefore, the distributed arrangement on the first and second boards 211 and 212 improves circuit performance. A connection contact point 2111 can be located on the first board 211 and used to mate with the connection cavity to form a plug and socket.

[0040] During actual assembly, when the flexible connector 213 is attached along the outer surface of the battery 230, its bending radius can adapt to the shape of the battery 230, without pulling on the circuit solder joints. This makes the assembly of the pen body assembly 100 smoother and reduces structural misalignment caused by assembly tolerances. After being attached, the flexible connector 213 also acts as a buffer. When the dot-matrix smart pen 10 is subjected to external impacts or shaking, it can absorb some stress and prevent electrical connection damage caused by relative displacement between the first board 211 and the second board 212, thereby improving the overall reliability and lifespan of the circuit board 210.

[0041] In summary, by dividing the circuit board 210 into a first board body 211 and a second board body 212 and connecting them with a flexible connector 213, and placing the battery 230 between the two, the overall structure can make more efficient use of the internal space of the pen body assembly 100. This not only reduces the outer diameter but also improves wiring compliance, assembly reliability, and circuit performance.

[0042] Specifically, the pen assembly 100 includes a pen shell structure 110 and a pen refill 120. A connecting cavity is disposed within the pen shell structure 110, and the pen refill 120 is at least partially housed within the pen shell structure 110. The pen refill 120 is signal-connected to a control assembly. The pen refill 120 can be used for writing or touching.

[0043] In this embodiment, the pen shell structure 110 can be in the shape of a slender cylinder or a polygonal column to adapt to the user's grip requirements, and can be made of metal, engineering plastic, or composite material according to appearance design requirements. Metal materials such as aluminum alloy or stainless steel can improve structural strength and wear resistance, while engineering plastics such as polycarbonate can reduce overall weight, thereby improving the user's comfort during long-term writing. The pen shell structure 110 has an internal cavity area for installing control components and circuit board 210, wherein the connecting cavity can be shaped according to the diameter and insertion force requirements of the external connector, so that the external connector maintains a stable limiting effect when it mates with the connecting contact point 2111.

[0044] When the pen refill 120 is housed within the pen casing structure 110, it can be installed using a plug-in, snap-on, or threaded method to maintain a fixed position when subjected to external force for writing. For example, the pen refill 120 can engage with the inner wall of the pen casing structure 110 via a slot structure, preventing axial displacement of the pen refill 120 during changes in writing pressure, thereby improving writing stability. The pen refill 120 itself can be selected from different types according to functional needs. For example, for physical pen refills used for handwriting, graphite-based writing materials or neutral ink refills can be used; for touch pen refills used for touchscreen operation, conductive rubber, conductive fibers, or other conductive soft structures can be used to conduct capacitive signals when the contact point contacts the screen surface. If the pen refill 120 is used for touch, its touch end position can also be transitioned according to the shape of the pen casing structure 110 to reduce the scratching sensation caused by the user when switching writing angles.

[0045] The signal connection between the pen tip 120 and the control component can be achieved through a metal spring, conductive adhesive, electrode sheet, or flexible circuitry. If the pen tip 120 has a pressure sensing function, a pressure sensing unit can be installed inside the pen tip 120, and the pressure signal can be transmitted to the circuit board 210 for processing via a conductive element. With the above structural arrangement, the control component can output corresponding pressure data or touch data according to the writing pressure or touch action applied by the pen tip 120, enabling the dot-matrix smart pen 10 to reproduce changes in writing force or accurately recognize touch input on digital devices.

[0046] Furthermore, the structure in which the pen refill 120 is at least partially housed within the pen casing structure 110 effectively protects the pen refill 120 from damage caused by external impacts. It also reduces the length of the exposed portion of the pen refill 120, shifting the center of gravity of the entire pen assembly 100 towards the center, thereby improving grip stability. If the pen refill 120 were completely exposed, it might bend or break upon drop or under stress, reducing the lifespan of the pen. Therefore, the partially housed structure improves durability.

[0047] In one embodiment, the pen casing structure 110 includes a pen body 111, a support frame 112, and a tail shell 113. The support frame 112 is detachably connected to the pen body 111, and the tail shell 113 is sleeved on the pen body 111 and the support frame 112. The circuit board 210 is detachably connected to the pen body 111.

[0048] Specifically, the tail shell 113 can be snapped into the pen body 111 and the support frame 112. During assembly, the circuit board 210 is first installed on the pen body 111, then the support frame 112 is placed on the circuit board 210 to fix the circuit board 210, and finally the tail shell 113 is fitted onto the pen body 111 and the support frame 112, making assembly convenient.

[0049] In this embodiment, the pen body 111 can be configured as a hollow tubular structure, with an internal mounting cavity for accommodating the circuit board 210. The pen body 111 can be made of metal or plastic; for example, aluminum alloy can improve structural strength and impact resistance, while plastic can reduce the overall weight of the pen assembly 100, thus improving comfort during extended writing. No single material is limited here. The outer surface of the pen body 111 can be provided with anti-slip textures or coated with an anti-slip coating according to grip requirements, allowing the user to obtain a more stable grip when using the pen assembly 100.

[0050] The support frame 112 provides fixed support for the circuit board 210 and may include structures such as snap-fit ​​tabs, positioning posts, and support ribs. The support frame 112 can be detachably connected to the pen body 111 via a snap-fit ​​or clip-on method, allowing it to be directly removed from the pen body 111 for maintenance of the circuit board 210 or replacement of internal components, facilitating subsequent operations. The support frame 112 can be made of plastic injection molding or metal stamping. Plastic structures are lightweight and flexible in molding, while metal structures have higher rigidity and improve overall stability; the choice can be made based on cost and usage requirements. When the support frame 112 is placed on the circuit board 210, its supporting surface provides pressure to the circuit board 210, reducing the wobbling of the circuit board 210 inside the pen body 111 and ensuring that the stability of the pen assembly 100 is not affected by internal component displacement during writing.

[0051] The tail shell 113, serving as the external enclosure of the pen shell structure 110, can be fitted along the outer surface of the pen body 111 and the support frame 112 and secured by a snap-fit ​​structure. The snap-fit ​​structure can take the form of protruding buckles, slots, or elastic sheets. Protruding buckles provide radial restraint during fitting, while slots create axial stops, thus restricting the tail shell 113 both axially and radially after installation, improving overall stability. After installation, the tail shell 113 covers the support frame 112 and the circuit board 210, strengthening the protection of internal components and preventing damage to the circuit board 210 from external impacts, drops, or vibrations. Positioning ribs can also be provided on the inner wall of the tail shell 113, making the fitting process smoother and improving assembly consistency.

[0052] During assembly, the circuit board 210 is first installed into the internal cavity of the pen body 111. The installation method can be screw connection, slot-sliding connection, or adhesive fixation. For example, when using a slot-sliding structure, the edge of the circuit board 210 can form a guiding structure with the inner wall of the pen body 111, making the assembly process smoother and reducing installation errors. Then, the support frame 112 is placed on the circuit board 210, and its position is defined by the aforementioned positioning posts or snap-fit ​​pieces, thus restricting the circuit board 210 in three-dimensional space. Finally, the tail shell 113 is fitted from the tail of the pen body 111, completely encapsulating the internal components, thereby completing the assembly of the entire pen shell structure 110. This sequential installation method makes the cooperation between components clearer, reduces the risk of jamming during assembly, and improves production efficiency.

[0053] Furthermore, since multiple components of the pen shell structure 110 are connected in a detachable manner, users or maintenance personnel can easily disassemble the tail shell 113 and support frame 112 to inspect or replace the circuit board 210 when internal components age, loosen, or become damaged after long-term use, thereby improving the maintainability of the entire device. If the components were fixed and not detachable, destructive disassembly might be required to access the internal components, increasing maintenance costs and affecting the product's lifespan. Therefore, the detachable structure in the current embodiment is more advantageous for practical applications.

[0054] Specifically, the pen body 111 is provided with a first connecting groove 1111, the support frame 112 is provided with a second connecting groove 1121, and the tail shell 113 is provided with a connecting hole 1131. The first connecting groove 1111 and the second connecting groove 1121 enclose to form a connecting cavity, and the connecting hole 1131 communicates with the connecting cavity.

[0055] By machining the first connecting groove 1111 and the second connecting groove 1121 on the pen body 111 and the support frame 112 respectively, the connecting cavity can be formed without additional parts, so that the pen shell structure 110 can form part of the plug socket structure.

[0056] In this embodiment, the groove shapes of the first connecting groove 1111 and the second connecting groove 1121 can be designed according to the size and shape of the plug socket. For example, they can be set as semi-circular grooves, square grooves, or irregularly shaped grooves with chamfers to meet the insertion requirements of different types of external plug heads. By using a two-part groove structure to enclose the cavity, compared with opening a large-sized integral groove, the structural weakening of a single component can be effectively reduced, thereby improving the overall strength of the pen body 111 and the support frame 112. If the entire connecting cavity is directly set on the pen body 111, the wall thickness of the pen body 111 may be excessively weakened, leading to deformation or cracking under long-term use or external impact. Therefore, the cavity formed by the two parts can improve the structural stress state.

[0057] After assembly, the first connecting groove 1111 and the second connecting groove 1121 form an internally closed connecting cavity. This cavity can accommodate the insertion force of the external connector and guide the external plug to make stable contact with the internal connecting contacts, making the insertion smoother. The connecting hole 1131 communicates with the connecting cavity, allowing the external plug to directly enter the connecting cavity through the tail shell 113. The diameter of the connecting hole 1131 can be designed according to the diameter of the external plug, and a beveled transition structure can be formed on its inner wall to provide a guiding effect for the external plug during insertion, reducing wear caused by misalignment or pressure on the inner wall of the tail shell 113. If the diameter of the connecting hole 1131 is too small, the resistance during plug insertion will increase, which may easily cause the tail shell 113 to be squeezed and deformed; if it is too large, it may create an excessive gap between the connecting hole 1131 and the external plug, affecting the stability of the insertion. Therefore, in actual design, it can be adjusted according to the structure of the external plug.

[0058] The first connecting groove 1111 and the second connecting groove 1121 can be formed using injection molding, CNC machining, or compression molding processes, respectively. This allows for the direct formation of the connecting cavity on the existing pen body 111 and support frame 112 without the need for additional independent structural components. This reduces the number of parts, assembly steps, and processing costs. Since the connecting cavity is formed on a shared platform by the first connecting groove 1111 and the second connecting groove 1121, the precision of the two grooves can be controlled during manufacturing, resulting in a more accurate enclosed cavity structure after assembly. This improves positioning accuracy during the external plug insertion process. Using independent connecting cavity components might require additional installation steps and fastening components, leading to a more complex structure and potentially increasing sources of error. Therefore, a one-piece machining method for the groove structure is more conducive to achieving dimensional consistency.

[0059] Furthermore, at the mating position between the pen body 111 and the support frame 112, a limiting surface or alignment structure can be provided to ensure that the first connecting groove 1111 and the second connecting groove 1121 can be accurately aligned during assembly to form a complete cavity, avoiding irregular shape of the connecting cavity due to misalignment, which would affect the insertion path of the plug. For example, a flange structure can be provided at the pen body 111, and a corresponding slot can be provided at the support frame 112, so that the two automatically align after assembly. This ensures that the central axis of the connecting cavity is roughly consistent with the connecting hole 1131 of the tail shell 113, allowing the external plug to enter smoothly in a straight line without deviation, thus improving the user experience.

[0060] Because the connecting cavity formed by the first connecting groove 1111 and the second connecting groove 1121 has the characteristics of structural stability and convenient processing, it can be directly used as part of the support structure of the plug and socket. In practical applications, the internal electrical contact points can be installed inside the connecting cavity or in its adjacent area. The inner walls of the first connecting groove 1111 and the second connecting groove 1121 can provide a mounting reference surface for the contact points, making the contact points stable under force and preventing loosening of the contact points due to external insertion and removal actions. Compared with the method of assembling the contact points with a separate plastic shell, by arranging the groove structure integrally inside the pen shell structure 110, the number of parts and volume can be reduced, making the overall structure of the pen body more compact.

[0061] In summary, by machining the first connecting groove 1111 and the second connecting groove 1121 on the pen body 111 and the support frame 112 respectively and enclosing them to form a connecting cavity, and cooperating with the connecting hole 1131 on the tail shell 113, a plug and socket structure can be constructed in a limited space, while maintaining the overall strength and stability of the pen shell structure 110. This is beneficial to achieving the design requirements of pen body components in terms of lightweight and compact internal layout.

[0062] In one embodiment, the pen body assembly 100 further includes a cover 130, which covers the outside of the pen housing structure 110. The cover 130 can protect the outside of the pen housing structure 110, and the cover 130 is detachably connected to the pen housing structure 110 for easy assembly and disassembly.

[0063] Specifically, the cover 130 can be detachably connected to the pen shell structure 110 using various structural methods such as snap-fit, threaded, and sliding engagement. For example, when using a snap-fit ​​structure, an elastic buckle can be provided on the inner wall of the cover 130, and a corresponding groove can be provided on the outer wall of the pen shell structure 110. The cover 130 can be quickly fixed by radial light pressure during assembly. When using a threaded structure, mutually mating internal and external threads can be provided between the cover 130 and the pen shell structure 110, allowing the cover 130 to be assembled and disassembled by tightening. If a sliding engagement structure is used, a guide rail can be set to limit the movement of the cover 130 along the axial direction of the pen shell structure 110 to a predetermined position, after which it is stopped and fixed. Different connection methods can adapt to different manufacturing processes and assembly requirements, and are not limited to a single method here.

[0064] When the cover 130 is installed on the outside of the pen housing structure 110, it provides environmental isolation for the pen housing structure 110, mitigating the impact of dust, sweat, moisture, or scratches from hard objects on the pen housing structure 110. For example, the cover 130 can be made of plastic, rubber, silicone, metal, or composite materials. Among them, the plastic cover 130 is lightweight, which helps to reduce the overall weight of the pen body assembly 100; the rubber or silicone cover 130 has good elasticity and cushioning performance, which can reduce the impact force transmitted to the pen housing structure 110 when the pen body assembly 100 is dropped from a certain height, thereby reducing the probability of damage to the internal circuit board 210 or other components; the metal cover 130 can provide high external pressure resistance, so that the pen body assembly 100 still has good durability under high-intensity use environments.

[0065] Because the cover 130 is a detachable structure, when the pen housing structure 110, circuit board 210, or other components inside the pen assembly 100 need maintenance, repair, or replacement, the user or maintenance personnel can simply remove the cover 130 to access the internal area without damaging the pen housing structure 110. If the cover 130 were a fixed, non-detachable structure, destructive disassembly might be required for internal maintenance, increasing maintenance costs and affecting structural integrity. Therefore, the detachable cover 130 effectively improves the maintainability of the pen assembly 100.

[0066] In addition, the outer surface of the cover 130 can be ergonomically designed with anti-slip textures, grip patterns, or soft coverings to improve the user's grip. For example, grooves, stripes, raised dots, or skin-like coatings can be formed in the grip area to provide users with more stable friction when writing, reducing slippage and improving writing accuracy. If the outer surface of the cover 130 is completely smooth and made of a hard material, it may become unstable when hands are wet or after prolonged use. Therefore, a well-designed surface can enhance the user experience.

[0067] Furthermore, a limiting structure, such as a flange, a stop block, or a positioning post, can be provided at the connection between the cover 130 and the pen shell structure 110 to make the axial and radial position of the cover 130 more stable after assembly, preventing loosening, rotation, or displacement during use, and ensuring the overall reliability and consistency of the pen body assembly 100. Through the above structural configuration, the cover 130 not only provides protection for the pen shell structure 110, but also improves the overall performance of the pen body assembly 100 in terms of appearance, grip, and maintenance.

[0068] In one embodiment, the tail shell 113 is provided with a snap-fit ​​portion 1132, and the pen body 111 and / or support frame 112 are provided with a fixing portion. The snap-fit ​​portion 1132 is snap-fitted into the fixing portion, and the snap-fit ​​portion 1132 and the fixing portion are arranged along the circumferential direction of the pen shell structure 110.

[0069] By setting the snap-fit ​​part 1132 to cooperate with the fixing part, during assembly, the pen body 111 is first fastened to the support frame 112, and then the snap-fit ​​part 1132 of the tail shell 113 is bypassed from the fixing part and sleeved on the pen body 111 and the support frame 112. After the tail shell 113 is installed in place, the tail shell 113 is rotated so that the snap-fit ​​part 1132 is engaged with the fixing part, which can position the installation between the three to prevent loosening. This not only makes the pen shell structure 110 have a more compact structure, but also facilitates the assembly and disassembly of the pen shell structure 110.

[0070] The snap-fit ​​part 1132 can be configured as an elastic protrusion, a snap-fit ​​arm, or a snap-fit ​​block structure, and the fixing part can be configured as a slot, a recess, or a limiting step, so that the snap-fit ​​part 1132 can move along the circumferential direction to the fixing part position during the rotation of the tail shell 113 and then generate a radial embedding or axial limiting effect.

[0071] The circumferential arrangement of the locking part 1132 and the fixing part enables the tail shell 113 to have a rotational positioning function during assembly, avoiding the axial loosening problem that may occur when the tail shell 113 is fixed by axial sliding alone. Specifically, during assembly, after the tail shell 113 is fitted onto the outside of the pen body 111 and the support frame 112, the initial position of the locking part 1132 can be offset from the fixing part by a certain angle, allowing the tail shell 113 to slide in smoothly without being blocked by the fixing part. When the tail shell 113 slides axially to the predetermined position, the locking part 1132 is moved circumferentially to the corresponding position of the fixing part by rotating the tail shell 113. At this time, the locking part 1132 engages with the fixing part, forming a double limit in both the circumferential and axial directions, thereby improving the reliability of the fixation.

[0072] The elastic deformation characteristics of the snap-fit ​​part 1132 provide a certain interference fit during the snap-fit ​​process, causing the snap-fit ​​part 1132 to deform when entering the fixing part, and return to its original shape after entering the fixing part, forming a snap-fit ​​state. This generates a force to resist reverse rotation or axial pull-out, improving connection stability. If the rigidity of the snap-fit ​​part 1132 is too high, a large external force may be required to get it into the fixing part during assembly, increasing assembly difficulty; if the elasticity of the snap-fit ​​part 1132 is too low, it may lose its holding force due to fatigue after long-term use, causing the tail shell 113 to loosen. Therefore, during the design, the elastic modulus of the material, the thickness of the snap-fit ​​part 1132, and the interference fit of the fixing part can be matched to ensure that the snap-fit ​​process can be completed smoothly and maintain long-term stability.

[0073] The fixing part can be formed on the outer wall of the pen body 111 or the support frame 112 through injection molding, machining, or stamping. Specifically, it can be a groove, a boss, or a stepped surface, ensuring that the snap-fit ​​part 1132 has a stable support surface after snapping, preventing structural damage caused by stress concentration due to insufficient contact area. When the fixing part is a groove, the snap-fit ​​part 1132 can be inserted into the groove, forming radial and axial limits; when the fixing part is a boss, the snap-fit ​​part 1132 can be fastened around the boss, forming a circumferential enveloping limit effect. Different forms of fixing parts can adapt to different assembly needs and strength requirements, and are not limited to a single type here.

[0074] By arranging the snap-fit ​​parts 1132 and the fixing parts along the circumferential direction, the tail shell 113 can be subjected to a uniform circumferential constraint force after assembly, avoiding local stress concentration or uneven force caused by single-point fixing. For example, when the snap-fit ​​parts 1132 are set as two or more and evenly distributed along the circumference, each snap-fit ​​part 1132 can form a symmetrical constraint in the circumferential direction, so that the tail shell 113 can remain stable when subjected to external torsion or radial compression, and is not prone to displacement or rotation. If the snap-fit ​​parts 1132 are only set on one side, the tail shell 113 may tilt or loosen during use due to uneven force, affecting the reliability of the overall structure.

[0075] Furthermore, the circumferentially arranged snap-fit ​​portion 1132 and fixing portion structure provide a convenient operation method during maintenance or disassembly. Users or maintenance personnel only need to rotate the tail shell 113 in the opposite direction to disengage the snap-fit ​​portion 1132 from the fixing portion, thereby quickly removing the tail shell 113 for internal inspection without the need for special tools or excessive external force, which improves the maintainability of the pen shell structure 110 and the convenience of user operation.

[0076] In a preferred embodiment, the outer wall of the pen body 111 is provided with a first fixing part 1113, the outer wall of the support frame 112 is provided with a second fixing part 1122, and the first fixing part 1113 and the second fixing part 1122 are respectively provided with two snap-fit ​​parts 1132 on the tail shell 113.

[0077] When the tail shell 113 is connected to the pen body 111 and the support frame 112 respectively, the two locking parts 1132 can engage with the first fixing part 1113 and the second fixing part 1122 respectively, thereby improving the connection strength. Specifically, the number of locking parts 1132 can be two, three or more, and is not limited here. When two locking parts 1132 are provided, they can be symmetrically distributed at 180 degrees in the circumferential direction, so that the tail shell 113 is subjected to symmetrical constraint force after locking, thereby improving structural stability; when three or more locking parts 1132 are provided, the circumferential constraint effect can be further enhanced, so that the tail shell 113 can still maintain a stable position when subjected to external forces in multiple directions, avoiding failure of a single locking part 1132 due to excessive local force.

[0078] The first fixing part 1113 is disposed on the outer wall of the pen body 111, and can provide support for the snap-fit ​​by utilizing the structural strength of the pen body 111 itself, avoiding snap-fit ​​failure due to insufficient strength of the fixing part. The first fixing part 1113 can be integrally formed with the pen body 111, for example, by directly molding a boss, groove or step structure during injection molding or machining, so that it is made of the same material as the pen body 111, with good structural continuity, and can effectively transmit the snap-fit ​​force. If the first fixing part 1113 is installed by post-assembly, the snap-fit ​​may be unstable due to installation accuracy deviation or loose fasteners. Therefore, the integral molding method is more conducive to ensuring the reliability of the snap-fit.

[0079] The second fixing part 1122 is provided on the outer wall of the support frame 112. After the support frame 112 is placed on the circuit board 210, it provides another snap-fit ​​position for the tail shell 113, so that the tail shell 113 can be constrained by the pen body 111 and the support frame 112 in the axial direction at the same time, forming a segmented support structure. By providing fixing parts on the pen body 111 and the support frame 112 respectively, the tail shell 113 can obtain the fixing effect of the front and rear sections after being sleeved, avoiding the cantilever stress state that may occur when the tail shell 113 is fixed only by one end, thereby improving the bending stiffness and torsional resistance of the overall structure.

[0080] The relative positions of the first fixing part 1113 and the second fixing part 1122 in the circumferential direction can be designed according to assembly requirements. For example, they can be set at the same circumferential angle position, so that the two locking parts 1132 respectively engage with the first fixing part 1113 and the second fixing part 1122 in the same radial plane, forming a linearly symmetrical constraint; or they can be set at different circumferential angle positions, so that the locking parts 1132 sequentially engage with the first fixing part 1113 and the second fixing part 1122 when the tail shell 113 is rotated, forming a segmented locking effect. Different relative position designs can adapt to different assembly processes and usage requirements, and are not limited to one specific design here.

[0081] When the two locking parts 1132 are respectively locked with the first fixing part 1113 and the second fixing part 1122, the tail shell 113 is doubly constrained in both the axial and circumferential directions, effectively resisting axial pull-out force and circumferential torsional force. For example, when the pen body assembly 100 is subjected to an accidental drop or torsional impact during use, the first fixing part 1113 and the second fixing part 1122 can each bear part of the load, avoiding the failure of locking or structural damage caused by a single fixing part bearing all the external force, thereby improving the overall reliability and durability of the pen shell structure 110.

[0082] Furthermore, by providing fixing parts on the pen body 111 and the support frame 112 respectively, a clear positioning reference can be provided during assembly, allowing the tail shell 113 to be aligned according to the positions of the two fixing parts during the fitting process, reducing assembly errors and improving assembly consistency. If the fixing part is only provided on a single component, the tail shell 113 may shift or tilt during fitting due to the lack of sufficient positioning reference, affecting the assembly quality. Therefore, providing fixing parts in sections is more conducive to ensuring assembly accuracy.

[0083] Furthermore, a guide portion 1133 is provided on the inner side of the tail shell 113, and a guide groove is provided on the outer wall of the pen body 111 and / or the outer wall of the support frame 112. The guide portion 1133 and the guide groove extend along the length direction of the pen shell structure 110, and the dimension of the guide groove in the circumferential direction of the pen shell structure 110 is larger than the dimension of the guide portion 1133. The guide portion 1133 is used to slide with the guide groove.

[0084] By configuring the guide part 1133 to cooperate with the guide groove, the tail shell 113 can be guided during installation, allowing it to move along a predetermined path as it slides into the pen shell structure 110 axially. This prevents the tail shell 113 from getting stuck or scratching against the pen body 111 or support frame 112 due to installation angle deviation or radial offset. The guide part 1133 can be configured as an inwardly protruding guide ridge, guide block, or guide rib, and the guide groove can be configured as a groove or guide rail extending along the length of the pen shell structure 110. This allows the guide part 1133 to be embedded inside the guide groove and constrained along the direction of the guide groove during sliding, thereby achieving the axial guiding function.

[0085] The guide portion 1133 and the guide groove extend along the length of the pen shell structure 110, enabling the tail shell 113 to obtain stable axial guidance during assembly and preventing the tail shell 113 from tilting or deflecting when it slides in. Specifically, the length of the guide portion 1133 can be designed according to the fitting depth of the tail shell 113, so that the guide portion 1133 remains inside the guide groove until the tail shell 113 is fully fitted in place, thereby providing continuous guidance throughout the assembly process.

[0086] The extension direction of the guide groove is parallel or substantially parallel to the axis of the pen shell structure 110, enabling the tail shell 113 to move in a straight line during assembly, reducing unnecessary friction and resistance during the assembly process. The depth of the guide groove can be matched according to the height of the guide part 1133, so that the guide part 1133 can obtain sufficient radial constraint after sliding into the guide groove, avoiding the guide part 1133 from easily detaching from the guide groove due to the guide groove being too shallow, or the guide part 1133 from having too large a gap inside the guide groove due to the guide groove being too deep, thus affecting the guiding accuracy.

[0087] Because the dimension of the guide groove in the circumferential direction of the pen shell structure 110 is larger than the dimension of the guide part 1133, during assembly, the tail shell 113 can have a certain degree of rotational freedom with respect to the pen body 111 and the support frame 112, so as to realize the relative rotation between the locking part 1132 and the fixing part, thereby realizing the action of release or engagement. Specifically, the difference between the circumferential dimension of the guide groove and the circumferential dimension of the guide part 1133 forms a circumferential gap. This circumferential gap can provide rotational margin for the tail shell 113, so that after the tail shell 113 slides into place axially, it can rotate a certain angle in the circumferential direction. This rotation angle can be designed according to the circumferential distance between the locking part 1132 and the fixing part, so that when the tail shell 113 rotates, the locking part 1132 can move from the initial clearance position to the locking position aligned with the fixing part, thereby completing the locking action.

[0088] By utilizing the sliding fit between the guide part 1133 and the guide groove, and the setting of the circumferential clearance, a two-step assembly operation of the tail shell 113 can be achieved: First, it slides in axially, at which point the guide part 1133 moves along the length direction within the guide groove, and the tail shell 113 is axially guided and constrained; second, it rotates circumferentially, at which point the guide part 1133 moves circumferentially within the guide groove, and the tail shell 113 rotates using the circumferential clearance, causing the locking part 1132 to engage with the fixing part. This step-by-step assembly method makes the assembly process more controllable, avoids accidental triggering of the locking mechanism during axial sliding, and improves the reliability and consistency of the assembly.

[0089] Furthermore, the sliding fit structure between the guide portion 1133 and the guide groove can provide a reverse guiding effect when the tail shell 113 is disassembled. After the user rotates the tail shell 113 in the opposite direction to disengage the snap-fit ​​portion 1132 from the fixing portion, the tail shell 113 can be pulled out axially. At this time, the guide portion 1133 is still constrained in the guide groove, which keeps the disassembly process stable and avoids disassembly difficulties or damage to parts due to radial offset, thereby improving the maintainability and reassembly capability of the pen shell structure 110.

[0090] In a preferred embodiment, the pen body 111 is provided with a first guide groove 1114, the second limiting hole 1115 is provided with a second guide groove 1123, and the tail shell 113 is provided with two guide portions 1133. The two guide portions 1133 respectively cooperate with the first guide groove 1114 and the second guide groove 1123, which can effectively improve the positioning accuracy of the tail shell 113. Specifically, the first guide groove 1114 is provided on the outer wall of the pen body 111, the second guide groove 1123 is provided on the outer wall of the support frame 112, and the two guide portions 1133 are respectively provided at different axial positions on the inner side of the tail shell 113, so that the tail shell 113 can be simultaneously guided and constrained by both the pen body 111 and the support frame 112 when it is fitted. By providing guide grooves on two different components, the tail shell 113 can obtain segmented guiding support during assembly, avoiding the situation where the tail shell 113 may be cantilevered or tilted at the other end due to relying on only a single guide groove for guidance.

[0091] When the two guide parts 1133 cooperate with the first guide groove 1114 and the second guide groove 1123 respectively, they can form two independent guiding constraint points during the sliding process of the tail shell 113, so that the tail shell 113 is more stably restricted in both the axial and radial directions. For example, when only one guide part 1133 enters the guide groove at the beginning of the assembly of the tail shell 113, the other guide part 1133 has not yet entered the corresponding guide groove. At this time, the tail shell 113 may wobble due to single-point constraint. When both guide parts 1133 enter their respective guide grooves, the tail shell 113 is constrained at two points, forming a stable guiding state, making the subsequent sliding process smoother and improving the assembly accuracy.

[0092] The relative positions of the first guide groove 1114 and the second guide groove 1123 in the circumferential direction can be designed according to assembly requirements. For example, they can be set to the same circumferential angle position, so that the two guide parts 1133 enter the first guide groove 1114 and the second guide groove 1123 respectively in the same radial plane, forming symmetrical guidance; or they can be set to different circumferential angle positions, so that the two guide parts 1133 enter their respective guide grooves in different radial planes, forming multi-point distributed guiding constraints, further improving the positioning accuracy and torsional resistance of the tail shell 113 in the circumferential direction. Different relative position designs can adapt to different structural layouts and assembly process requirements, and are not limited to one specific design here.

[0093] After the two guide parts 1133 cooperate with the first guide groove 1114 and the second guide groove 1123, the tail shell 113 can maintain a stable axial position during the rotation and locking process, avoiding the axial movement caused by rotation from affecting the alignment accuracy between the locking part 1132 and the fixing part. Specifically, when the tail shell 113 rotates, the two guide parts 1133 move within the circumferential gap of the first guide groove 1114 and the second guide groove 1123 respectively. Since the two guide parts 1133 are axially constrained by their respective guide grooves, the tail shell 113 as a whole can maintain a basically unchanged axial position during the rotation process, so that the locking part 1132 can accurately move to the corresponding position of the fixing part, improving the locking success rate and assembly quality.

[0094] In addition, by setting two guide parts 1133 that cooperate with two guide grooves respectively, a more stable reverse guiding effect can be provided when the tail shell 113 is disassembled. After the tail shell 113 is unblocked by reverse rotation, it can still be guided and constrained by two points when it is pulled out along the axis. This avoids the tail shell 113 tilting or getting stuck during disassembly due to single-point constraint, thereby improving the smoothness and repeatability of disassembly operation and reducing the risk of component wear or deformation caused by repeated disassembly and assembly.

[0095] In one embodiment, the fixing part is provided inside the guide groove, and the snap-fit ​​part 1132 is used to move from the guide groove to one side of the fixing part, and can snap-fit ​​with the fixing part when the tail shell 113 rotates relative to the pen body 111.

[0096] With this configuration, when assembling the tail shell 113, the snap-fit ​​part 1132 is first avoided from the fixing part. After the tail shell 113 is slidably installed into place through the cooperation of the guide part 1133 and the guide groove, the tail shell 113 is then rotated, allowing the snap-fit ​​part 1132 to engage with the fixing part. Simultaneously, since the fixing part is located inside the guide groove, the overall structure of the pen shell 110 is also compact. The fixing part, located inside the guide groove, allows it to form a snap-fit ​​position on the side wall or bottom of the guide groove. This allows the snap-fit ​​part 1132 to move circumferentially into the area where the fixing part is located after sliding into place along the guide groove, thus achieving the snap-fit ​​function. Specifically, the fixing part can be configured as a recess, boss, or step structure on the side wall of the guide groove, allowing the snap-fit ​​part 1132 to move along the circumferential gap of the guide groove to the fixing part position when the tail shell 113 rotates, forming a radial or axial limiting fit with the fixing part.

[0097] The locking part 1132 is used to move from the guide groove to one side of the fixed part. This means that the locking part 1132 first enters the guide groove during the axial sliding of the tail shell 113. At this time, a certain gap is maintained between the locking part 1132 and the side wall of the guide groove, allowing the locking part 1132 to slide freely in the guide groove without being blocked by the fixed part. After the tail shell 113 slides into place, the locking part 1132 is located at a specific axial position in the guide groove. At this time, by rotating the tail shell 113, the locking part 1132 can move within the circumferential gap of the guide groove, moving from the initial position to one side of the fixed part, that is, the position aligned with the fixed part, thereby completing the locking action. This design allows the assembly process to be divided into two independent steps: axial sliding and circumferential rotation, reducing assembly difficulty and improving assembly reliability.

[0098] The structural layout of placing the fixing part inside the guide groove ensures that the fixing part does not protrude from the outer surface of the pen body 111 or the support frame 112, avoiding the formation of protrusions or depressions on the outer surface of the pen shell structure 110, thus maintaining the smoothness and aesthetics of the outer surface of the pen shell structure 110. If the fixing part were located on the outer side of the guide groove or the outer surface of the pen body 111, it might form visible structural features on the outer side of the pen shell structure 110, affecting the overall appearance, and might interfere with the inner wall of the cover 130 when it is installed, increasing assembly complexity. By placing the fixing part inside the guide groove, the fixing part can be hidden inside the guide groove structure, achieving structural integration and compactness.

[0099] During the engagement of the locking part 1132 with the fixing part when the tail shell 113 rotates relative to the pen body 111, the locking part 1132 can move along the circumferential gap of the guide groove until the locking surface of the locking part 1132 aligns with the mating surface of the fixing part and engages. The locking part 1132 can be configured as an elastic locking arm, which can elastically deform when moving to the position of the fixing part, so that the locking arm returns to its original shape after passing the locking edge of the fixing part, thereby forming a locking state and providing force to resist reverse rotation or axial pull-out. The fixing part can be configured as a locking boss or a locking groove, so that the locking part 1132 can be embedded inside the fixing part or fastened around the fixing part after engagement, forming a stable mechanical lock.

[0100] Furthermore, after the cover 130 is installed on the outside of the pen shell structure 110, it can also protect the locking part 1132 and the fixing part. Specifically, after the cover 130 is installed on the outside of the pen shell structure 110, it can cover the outer surfaces of the pen body 111, the support frame 112, and the tail shell 113, forming an outer protective structure. This ensures that the locking part 1132 and the fixing part are located in the space between the cover 130 and the pen shell structure 110, and are not directly exposed to the external environment. The cover 130 prevents dust, moisture, or other external impurities from entering the mating area between the locking part 1132 and the fixing part, avoiding increased friction or wear of the locking surface due to the accumulation of impurities, thereby maintaining the long-term stability and reliability of the locking mechanism.

[0101] The protective function of the cover 130 for the latching part 1132 and the fixing part is also reflected in blocking accidental external forces. When the pen body assembly 100 is subjected to external collision, squeezing or drop impact during use, the cover 130 can first bear the external force and disperse the external force to the overall structure of the pen shell structure 110, reducing the possibility of the external force acting directly on the latching part 1132 or the fixing part, thereby avoiding deformation of the latching part 1132 or damage to the fixing part due to excessive local stress, and improving the impact resistance and durability of the pen shell structure 110.

[0102] After the cover 130 is installed on the outside of the pen shell structure 110, it can also cover the mating gap between the tail shell 113 and the pen body 111 or the support frame 112, preventing the mating gap from being exposed to the outside and reducing the overall aesthetics degradation caused by visual gaps. By covering the pen body assembly 100, the appearance of the pen body assembly 100 can present a unified visual effect, improving the product's appearance quality and user experience.

[0103] Furthermore, the pen body assembly 100 also includes a limiting member 140. The tail shell 113 has a first limiting hole 1134, and the pen body 111 and / or support frame 112 have a second limiting hole 1115. The first limiting hole 1134 and the second limiting hole 1115 are correspondingly arranged, and the limiting member 140 is used to be inserted into the first limiting hole 1134 and the second limiting hole 1115 respectively.

[0104] The limiting member 140 can be a limiting pin, a limiting post, a limiting bolt, or other fasteners or positioning components that can be inserted into the hole to form a limiting effect. Specifically, the limiting member 140 can be configured as a cylindrical, frustum-shaped, or polygonal prism, so that the limiting member 140 can cooperate with the hole walls of the first limiting hole 1134 and the second limiting hole 1115 to provide radial and circumferential limiting effects.

[0105] The first limiting hole 1134 is formed on the tail shell 113 and can be configured as a through hole or a blind hole that penetrates radially along the tail shell 113, allowing the limiting member 140 to be inserted into the first limiting hole 1134 from the outside or inside of the tail shell 113. The diameter of the first limiting hole 1134 can be designed to match the outer diameter of the limiting member 140, so that the limiting member 140 and the first limiting hole 1134 form an interference fit, clearance fit, or transition fit. If an interference fit is used, the limiting member 140 can be self-locked by friction after being inserted into the first limiting hole 1134 without additional fixing measures, but a large external force may be required during disassembly; if a clearance fit is used, the limiting member 140 can be freely inserted and removed in the first limiting hole 1134, which is convenient for assembly and disassembly, but other methods such as snap-fit ​​or threaded connection may be needed to prevent the limiting member 140 from accidentally coming out; if a transition fit is used, a balance can be achieved between assembly convenience and fixing reliability, and the choice can be made according to actual needs, without making a unique limitation here.

[0106] The second limiting hole 1115 is provided on the pen body 111 and / or the support frame 112, which means that the second limiting hole 1115 can be provided only on the pen body 111, or only on the support frame 112, or both on the pen body 111 and the support frame 112. When the second limiting hole 1115 is opened on the pen body 111, the limiting member 140 can be inserted into the first limiting hole 1134 and the second limiting hole 1115 to directly connect and fix the tail shell 113 to the pen body 111. When the second limiting hole 1115 is opened on the support frame 112, the limiting member 140 can be inserted into the first limiting hole 1134 and the second limiting hole 1115 to directly connect and fix the tail shell 113 to the support frame 112, thereby indirectly achieving relative fixation between the tail shell 113 and the pen body 111 through the support frame 112. When the second limiting hole 1115 is opened on both the pen body 111 and the support frame 112, multiple limiting members 140 can be set to be inserted into the corresponding limiting holes between the tail shell 113 and the pen body 111, and between the tail shell 113 and the support frame 112, forming multi-point limiting, improving the limiting effect and structural stability.

[0107] The first limiting hole 1134 and the second limiting hole 1115 are correspondingly arranged. This means that when the tail shell 113 slides into place through the cooperation of the guide part 1133 and the guide groove and rotates to the state where the locking part 1132 is engaged with the fixing part, the axis of the first limiting hole 1134 and the axis of the second limiting hole 1115 are coaxial or substantially coaxial. This allows the limiting member 140 to pass through the first limiting hole 1134 and the second limiting hole 1115 simultaneously along a common insertion direction. This corresponding arrangement ensures that the limiting member 140 will not have difficulty or be unable to be inserted during the insertion process due to hole position deviation, thereby ensuring the smooth realization of the limiting function.

[0108] With this configuration, after the tail shell 113 is installed in place, the first limiting hole 1134 and the second limiting hole 1115 are connected. Then, the limiting member 140 is inserted into the first limiting hole 1134 and the second limiting hole 1115 respectively, thus limiting the relative rotation between the tail shell 113 and the pen body 111. Specifically, when the tail shell 113 slides into place along the guide groove via the guide part 1133 and rotates until the locking part 1132 engages with the fixing part, the openings of the first limiting hole 1134 and the second limiting hole 1115 are aligned, forming a connected insertion channel. At this time, the limiting member 140 is inserted into the first limiting hole 1134 from the outside or inside of the tail shell 113, and continues to enter the second limiting hole 1115 along the insertion direction, so that a part of the limiting member 140 is located in the first limiting hole 1134 and another part is located in the second limiting hole 1115, thereby forming a mechanical connection between the tail shell 113 and the pen body 111 or the support frame 112. After the limiting member 140 is inserted, since the outer diameter of the limiting member 140 forms a radial fit with the hole walls of the first limiting hole 1134 and the second limiting hole 1115, the limiting member 140 can prevent the tail shell 113 from rotating circumferentially relative to the pen body 111 or the support frame 112, thereby achieving the limiting effect on the relative rotation between the tail shell 113 and the pen body 111.

[0109] The limiting mechanism of the limiting member 140 for relative rotation between the tail shell 113 and the pen body 111 is that when the tail shell 113 attempts to rotate relative to the pen body 111, the wall of the first limiting hole 1134 will have a circumferential displacement relative to the wall of the second limiting hole 1115. At this time, the limiting member 140 inserted in the two limiting holes will be subjected to the circumferential pressing force of the walls of the first limiting hole 1134 and the second limiting hole 1115. The reaction force generated by this pressing force prevents the tail shell 113 from continuing to rotate, thereby locking the tail shell 113 in a specific circumferential position.

[0110] By inserting the limiting member 140, an additional circumferential limiting guarantee can be provided on the basis of the snap-fit ​​engagement between the snap-fit ​​part 1132 and the fixed part, forming a double locking mechanism. The snap-fit ​​engagement between the snap-fit ​​part 1132 and the fixed part can limit the circumferential rotation of the tail shell 113 to a certain extent. However, the limiting ability of the snap-fit ​​structure may be affected by the friction of the snap-fit ​​surface or the elastic deformation of the snap-fit ​​structure. Under a large external force, the snap-fit ​​may disengage or relatively slide. By adding the limiting member 140, a rigid limiting can be provided on the basis of the snap-fit ​​structure. Even when there is slight relative movement between the snap-fit ​​part 1132 and the fixed part, the tail shell 113 can still be constrained by the limiting member 140, thereby improving the stability and reliability of the connection between the tail shell 113 and the pen body 111, and preventing the tail shell 113 from loosening or falling off due to long-term use or accidental impact.

[0111] In one embodiment, the circuit board 210 is also provided with lamp beads, the limiting member 140 can be a light-transmitting member, and the limiting member 140 is arranged opposite to the lamp beads. When the limiting member 140 is installed in place, the limiting member 140 can also perform the function of guiding light.

[0112] Specifically, the LEDs on the circuit board 210 can be light-emitting diodes (LEDs) or other light-emitting elements, used to provide indicator light or decorative light when the pen assembly 100 is working. The LEDs can be positioned on the circuit board 210 near the second limiting hole 1115, allowing the light emitted by the LEDs to propagate along the channel direction of the second limiting hole 1115. The limiting member 140 serves as a light-transmitting member, and its material can be a plastic material with good light transmittance, such as polycarbonate, polymethyl methacrylate (PMMA), or transparent silicone, allowing light to pass through the interior of the limiting member 140 and be conducted from the location of the LEDs to the other end or side of the limiting member 140, thereby achieving the light guiding function.

[0113] After the limiting member 140 is installed in place, the light emitted by the LED is conducted through the limiting member 140 to the outer surface of the tail shell 113 or other visible positions of the pen shell structure 110, providing the user with an indication of the working status of the pen component 100. For example, different colors or flashing frequencies of light can indicate the battery status, connection status, or working mode. By designing the limiting member 140 as a light-transmitting component and realizing its light-guiding function, light transmission can be achieved without adding additional light-guiding components, reducing the number of parts, simplifying the structural design, and reducing manufacturing costs. If a separate light-guiding component is set, it may be necessary to open additional light-guiding channels or mounting positions on the pen shell structure 110, increasing structural complexity and assembly processes. Therefore, the design that integrates the limiting member 140 with the light-guiding function is more conducive to structural compactness and manufacturing convenience.

[0114] Furthermore, the control component also includes a sensing module electrically connected to the circuit board 210 and connected to the pen refill 120. The sensing module is used to acquire the displacement signal of the pen refill 120. By setting the sensing module to cooperate with the pen refill 120, the pen refill 120 can come into contact with an external object, and by pressing the pen body assembly 100, the sensing module can acquire the pressure signal of the pen refill 120 to achieve touch control.

[0115] In specific implementations, the sensing module can employ various sensing structures to adapt to different touch detection requirements. For example, the sensing module can be any one or a combination of a pressure sensor, a displacement sensor, a capacitive sensing unit, or a magnetoresistive sensing unit. When the sensing module uses a pressure sensor, a push rod structure or a contact structure can be provided at the tail end of the pen refill 120, so that when the pen refill 120 is subjected to external pressure, the force is transmitted to the pressure sensor, which converts the mechanical pressure into an electrical signal and transmits it to the circuit board 210 for processing. The advantage of using a pressure sensor is that it can more directly reflect the changes in pressure on the pen refill 120, facilitating the implementation of touch feedback with different levels of force.

[0116] When the sensing module uses a displacement sensor, such as an optical displacement sensor or a resistive displacement sensor, the user's pressure level can be determined by the axial movement of the pen tip 120. The displacement sensor can output continuous displacement data even with a short movement distance of the pen tip 120, thus achieving more precise pressure determination. If the sensing module uses a capacitive structure, a sensing electrode can be placed near the pen tip 120. When the pen tip 120 is pressed, the capacitance value changes, and this capacitance change can be analyzed by the circuit board 210 to determine the amount of displacement. The advantage of the capacitive structure is its high wear resistance and the fact that the pen tip 120 does not need to be in direct contact with the sensing structure, making it suitable for long-term use scenarios.

[0117] The sensor module can be connected to the pen refill 120 via a snap-fit ​​structure, adhesive structure, threaded structure, or elastic compression structure. When using a snap-fit ​​structure, a protrusion can be provided at the end of the pen refill 120, and a corresponding slot can be provided on the sensor module, allowing the two to be fixed together through shape matching. When using a threaded structure, a secure connection can be achieved through thread engagement. If an elastic compression structure is used, an axial preload can be applied to the pen refill 120 through an elastic element, maintaining a stable position when the pen refill 120 is not in use. All these connection methods ensure stable force transmission between the pen refill 120 and the sensor module, preventing loosening during writing or touch operation that could lead to inaccurate pressure or displacement detection.

[0118] When the pen tip 120 comes into contact with an external object, the axial force on the pen tip 120 is transmitted to the sensing module according to the movement path of the pen tip 120. Since the pen tip 120 can move along the axial direction of the pen shell structure 110 when it is pressed, the sensing module can acquire the displacement or pressure signal of the pen tip 120 in real time. After receiving the signal from the sensing module, the circuit board 210 can analyze the signal according to a preset algorithm to determine the touch intensity, touch trigger timing, or execute the corresponding electrical signal output, thereby realizing the touch function. Through this structural arrangement, the pen assembly 100 can realize the touch function while maintaining the traditional writing experience, thus expanding the application range of the pen assembly 100 in electronic devices.

[0119] Furthermore, to improve the stability of the detection results from the sensing module, a guide structure can be incorporated into the movement path of the pen refill 120. This can be achieved by using a guide sleeve, guide plate, or axial limiting ring to maintain a stable axial direction during movement, preventing detection errors caused by tilting, swaying, or uneven friction. The guide structure can be made of plastic, metal, or a low-friction coefficient material. For example, polytetrafluoroethylene (PTFE) can reduce the friction between the pen refill 120 and the guide structure, allowing the pen refill 120 to move smoothly even under slight pressure, thus improving the sensitivity of the sensing module. If the pen refill 120 lacks a guide structure, it may experience offset or jamming during repeated use, affecting the sensing module's accurate acquisition of pressure signals.

[0120] The sensor module enables the pen assembly 100 to generate different signal types based on varying pressure applied to the pen tip 120, achieving multi-level touch or pressure recognition. For example, when the pen tip 120 is subjected to slight pressure, the sensor module can output a first signal to trigger a light touch operation; when the pen tip 120 is subjected to greater pressure, it can output a second signal to trigger a deep touch operation. By differentiating and processing pressure or displacement signals, the pen assembly 100 can adapt to different usage scenarios, such as selection, clicking, and drawing operations, improving the pen assembly 100's interactivity in smart devices.

[0121] In summary, by setting up a sensing module and establishing a mechanical and signal connection between the sensing module and the pen core 120, the pen body assembly 100 can acquire pressure or displacement signals in real time when it is pressed, ensuring the accuracy and responsiveness of touch control, thereby improving the functionality and user experience of the pen body assembly 100.

[0122] Specifically, the sensing module includes a pressure sensor 221 and a movable seat 222. The pressure sensor 221 is electrically connected to the circuit board 210, and the movable seat 222 is movably connected to the pen shell structure 110. The pressure sensor 221 is used to acquire the pressure signal of the movable seat 222.

[0123] The pressure sensor 221 can be connected to the circuit board 210 via contacts, soldering, or cables. By pressing the pen refill 120, the movable seat 222 moves relative to the pen shell structure 110, thereby driving the movable seat 222 to press against the sensing end of the pressure sensor 221, thus realizing the acquisition of pressure signals.

[0124] In specific embodiments, the movable connection between the movable seat 222 and the pen shell structure 110 can be a sliding fit, a rotational fit, or an elastic support fit. For example, when a sliding fit is used between the movable seat 222 and the pen shell structure 110, a guide groove matching the shape of the movable seat 222 can be provided on the inner side of the pen shell structure 110. After being pushed by the pen refill 120, the movable seat 222 will generate a linear displacement along the axial direction of the guide groove, making the contact position between the movable seat 222 and the pressure sensor 221 more stable and reducing the pressure detection error caused by the offset of the movable seat 222. When a rotational fit structure is used, a pin can be provided between the movable seat 222 and the pen shell structure 110, so that the movable seat 222 will swing slightly around the pin when pressed, thereby contacting the sensing end of the pressure sensor 221. This type of structure allows the movable seat 222 to achieve effective displacement under limited structural space.

[0125] The movable base 222 can be made of metal, engineering plastic, or composite materials, with the specific material determined based on the usage environment and wear resistance requirements of the pen body assembly 100. For example, metal materials offer good structural stability, which helps improve the deformation resistance of the movable base 222 under repeated pressure; engineering plastic materials are lightweight, reducing the overall weight of the pen body assembly 100 and minimizing wear on the pressure sensor 221 when in contact with it; and composite materials with elastic or shock-absorbing properties can absorb some of the impact force during pressure, making the pressure sensor 221 experience more gradual stress and improving the stability of the pressure signal.

[0126] To improve the accuracy of pressure signal acquisition by pressure sensor 221, a pushing structure, such as a protrusion, push rod, or spherical contact point, can be set between the movable seat 222 and the pen refill 120. This allows the axial force generated by the pen refill 120 to be concentrated on the force-bearing part of the movable seat 222. If the pen refill 120 directly contacts the movable seat 222 and the contact surface is large, it may lead to uneven force distribution, affecting the output accuracy of pressure sensor 221. By setting a centralized pushing structure, the displacement transmission path can be clearly defined, the pressure signal can be more linear, and it will help the subsequent circuit board 210 to analyze the signal.

[0127] The sensing end of the pressure sensor 221 can be planar, point-type, or curved, with different structures adapting to different contact methods of the movable seat 222. For example, when the sensing end is planar, it is suitable for the movable seat 222 to apply pressure through surface contact; when the sensing end is point-type, it is suitable for the movable seat 222 to have a design with concentrated protrusions, which can improve the pressure detection sensitivity; when the sensing end is curved, it can maintain effective contact even when the movable seat 222 undergoes slight displacement, which is beneficial to improving detection stability.

[0128] The pressure sensor 221 can be connected to the circuit board 210 via contacts, soldering, or cables to adapt to different manufacturing processes. For example, contact connections offer advantages such as easy assembly and high maintainability, allowing for quick replacement of the pressure sensor 221 when it is damaged. Soldering provides high electrical connection reliability and is suitable for high-intensity operating environments. Cable connections offer flexibility between the pressure sensor 221 and the circuit board 210, allowing for a more flexible structural layout and reducing the impact of the movable seat 222 on the connection area during movement. If a rigid connection is used without flexible compensation, the pressure sensor 221 may experience solder joint fatigue after repeated stress. Therefore, selecting the connection method based on the actual structural space can improve the overall service life.

[0129] When the pen tip 120 is pressed by an external force, it undergoes axial displacement within the pen casing structure 110. This displacement acts on the movable seat 222 through the end of the pen tip 120, causing the movable seat 222 to move towards the pressure sensor 221. Once the movable seat 222 contacts the sensing end of the pressure sensor 221, the pressure sensor 221 converts the external force into an electrical signal and transmits it to the circuit board 210. Based on the change in the magnitude of the output signal from the pressure sensor 221, the circuit board 210 can determine the user's pen pressure and execute corresponding touch commands. This structural arrangement ensures a clear pressing path for the pen tip 120 and stable detection results from the pressure sensor 221, facilitating accurate pressure sensing.

[0130] In summary, by setting up a pressure sensor 221 and a movable base 222, the movable base 222 can generate controllable displacement when the pen tip 120 is pressed, and apply force to the pressure sensor 221. This allows the pressure sensor 221 to accurately acquire pressure signals, which are then processed by the circuit board 210, thereby realizing the touch function of the pen assembly 100. This structure has a reasonable number of components, a clear force transmission path, and is easy to manufacture and assemble, meeting the usage requirements of different touch application scenarios.

[0131] Furthermore, the dot-matrix smart pen 10 also includes a camera component 300. The pen body component 100 has a shooting hole 1112. The camera component 300 is located inside the pen body component 100 and is used to acquire image signals from the shooting hole 1112. The camera component 300 is electrically connected to the circuit board 210 and can be driven to take pictures from the shooting hole 1112 by pressing the pen tip 120.

[0132] The imaging aperture 1112 can be configured with different geometric shapes according to the field of view requirements of the imaging assembly 300, such as a circular aperture, an elliptical aperture, or an irregularly shaped aperture with a chamfered structure, in order to reduce light obstruction when entering. The aperture size of the imaging aperture 1112 can be adapted to the optical light transmission requirements of the lens. If the aperture is too small, light obstruction and increased vignetting at the image edge may occur, while if the aperture is too large, the structural strength of the pen assembly 100 may decrease. Therefore, the aperture size can be reasonably selected according to the size of the optical module, and no single limitation is made here. The filter 310, the imaging module 320, and the lens holder 330 are all located on the optical path of the imaging aperture 1112, so that the imaging assembly 300 can receive light from the outside of the imaging aperture 1112.

[0133] The electrical connection between the camera module 300 and the circuit board 210 can be achieved through flexible flat cable soldering, FPC plug-in, or metal terminal crimping. Different connection methods offer different advantages in installation convenience and space utilization. For example, when using flexible flat cable soldering, the camera module 300 can maintain high layout flexibility within the pen assembly 100, making it suitable for structures with limited internal space. When using metal terminal crimping, the ease of disassembly and maintenance is improved, but sufficient space needs to be reserved for terminal installation within the pen assembly 100. Through these connections, the camera module 320 can transmit image signals to the circuit board 210 in real time, enabling the circuit board 210 to perform operations such as storage, processing, or wireless transmission based on the signal content.

[0134] In practical use, the camera module 300 can trigger the shooting function by pressing the pen tip 120. This triggering method uses the pressure sensor 221 in the sensing module to convert the pressing behavior of the pen tip 120 into a trigger signal, causing the camera module 320 to perform the shooting action. This structure avoids setting additional buttons on the pen surface, which can improve the integrity of the overall structure and dust resistance, while allowing users to complete the shooting operation while holding the dot-matrix smart pen 10, providing good human-computer interaction. The pressing amount of the pen tip 120 can be a tiny displacement, which is transmitted to the pressure sensor 221 and analyzed by the circuit board 210 to trigger the photo shooting command; if the pressing force is insufficient, the circuit board 210 may not perform the shooting action to avoid accidental triggering.

[0135] The camera assembly 300 includes a filter 310, a camera module 320, and a lens mount 330. The lens mount 330 is connected to the pen body assembly 100, and the filter 310 and the camera module 320 are mounted on the lens mount 330.

[0136] The lens holder 330 can be made of metal, plastic, or composite materials, and serves to form a relatively stable optical mounting platform inside the pen assembly 100, keeping the filter 310 and the camera module 320 in a fixed optical axis position. If the lens holder 330 is made of metal, it improves structural strength and resistance to deformation, making it suitable for scenarios where it may be subjected to pressure or drops during long-term use. If it is made of plastic, it is lighter, reducing the overall weight of the pen and thus improving writing comfort. The lens holder 330 can be fixed to different positions inside the pen assembly 100 by hooks, studs, or adhesive methods, preventing the camera assembly 300 from shifting due to external vibrations or the pressing action of the pen refill 120.

[0137] The filter 310 can be configured as an infrared filter, a broadband anti-reflection filter, or other optical filters to improve the spectral characteristics of the light received by the camera module 320, resulting in more accurate colors in the image. Without the filter 310, the image sensor may be affected by infrared interference, leading to color cast or reduced sharpness. Therefore, the filter 310 improves image quality. The camera module 320 can be a single-camera module, a multi-camera module, or a module with autofocus. Multi-camera modules can provide image information from different focal lengths or regions, but require more internal installation space; while single-camera modules are smaller and more suitable for the narrow space within the pen assembly 100. No single limitation is specified here.

[0138] The lens mount 330 can be formed with a filter slot for accommodating the filter 310 and a mounting platform for positioning the camera module 320, so that the filter 310 and the camera module 320 maintain a fixed distance after assembly, ensuring that light can enter the camera module 320 from the shooting hole 1112 through the filter 310 along a set path. In order to reduce image blurring caused by pen shaking, the structure of the lens mount 330 can be provided with a reinforcing rib structure on its wall, so that the lens mount 330 has higher shock resistance and improves the imaging stability of the camera assembly 300 during use.

[0139] When writing, the dot-matrix smart pen 10 of this invention is subjected to pressure from the writing object, that is, it moves upward in the vertical direction. The pen tip 120 presses against the pressure sensor 221. After the pressure sensor 221 is triggered, it sends an electrical signal to the camera component 300. After receiving the electrical signal, the camera component 300 synchronously collects and recognizes the text, symbols or images written by the user on the writing object, and converts them into electronic documents for storage. In this way, the user can realize synchronous input while writing, which greatly improves the efficiency of office work.

[0140] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application 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 the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0141] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0142] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0143] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A dot-matrix smart pen, characterized in that, include: The pen body assembly has a connecting cavity; as well as The control component includes a circuit board, the end of which is provided with a connection contact point. The end and the inner wall of the connection cavity form a plug and female socket, and the connection contact point is located inside the plug and female socket. The connection contact point is used for electrical connection with an external connector.

2. The dot-matrix smart pen according to claim 1, characterized in that, The pen assembly includes a pen shell structure and a pen refill. The connecting cavity is located within the pen shell structure, and the pen refill is at least partially housed within the pen shell structure. The pen refill is signal-connected to the control assembly.

3. The dot-matrix smart pen according to claim 2, characterized in that, The pen casing structure includes a pen body, a support frame, and a tail shell. The support frame is detachably connected to the pen body, and the tail shell is fitted onto the pen body and the support frame. The circuit board is detachably connected to the pen body.

4. The dot-matrix smart pen according to claim 3, characterized in that, The pen body is provided with a first connecting groove, the support frame is provided with a second connecting groove, and the tail shell is provided with a connecting hole. The first connecting groove and the second connecting groove surround to form the connecting cavity, and the connecting hole communicates with the connecting cavity. And / or, the pen body assembly further includes a cover that covers the outside of the pen housing structure.

5. The smart pen according to claim 3, a dot-matrix smart pen, characterized in that, The tail shell is provided with a snap-fit ​​part, and the pen body and / or the support frame is provided with a fixing part. The snap-fit ​​part and the fixing part are snap-fitted together, and the snap-fit ​​part and the fixing part are arranged along the circumferential direction of the pen shell structure.

6. The smart pen according to claim 5, a dot-matrix smart pen, characterized in that, The inner side of the tail shell is provided with a guide portion, and the outer wall of the pen body and / or the outer wall of the support frame is provided with a guide groove. The guide portion and the guide groove extend along the length direction of the pen shell structure, and the size of the guide groove in the circumferential direction of the pen shell structure is larger than the size of the guide portion. The guide portion is used to slide with the guide groove.

7. The smart pen according to claim 6, a dot-matrix smart pen, characterized in that, The fixing part is located inside the guide groove, and the snap-fit ​​part is used to move from the guide groove to one side of the fixing part, and can snap-fit ​​with the fixing part when the tail shell rotates relative to the pen body; And / or, the pen body assembly further includes a limiting member, the tail shell has a first limiting hole, the pen body and / or the support frame has a second limiting hole, the first limiting hole and the second limiting hole are correspondingly provided, and the limiting member is used to be inserted into the first limiting hole and the second limiting hole respectively.

8. The dot-matrix smart pen according to claim 2, characterized in that, The control component further includes a sensing module electrically connected to the circuit board and connected to the pen refill, the sensing module being used to acquire the displacement signal of the pen refill.

9. The dot-matrix smart pen according to claim 8, characterized in that, The sensing module includes a pressure sensor and a movable seat. The pressure sensor is electrically connected to the circuit board, and the movable seat is movably connected to the pen shell structure. The pressure sensor is used to acquire the pressure signal of the movable seat.

10. The dot-matrix smart pen according to any one of claims 1-9, characterized in that, The smart pen also includes a camera component. The pen body component has a shooting hole, the camera component is located inside the pen body component, and the camera component is used to acquire image signals from the shooting hole.

Images