Pen with light source structure

Abstract

The invention discloses a pen with a light source structure, comprising a first pen shell provided with a mounting groove; the second pen shell is provided with an extension part towards the mounting groove; a charging module is arranged on the extension part; the first pen shell is rotationally connected with the second pen shell; the extension part can be accommodated in the mounting groove; the elastic piece is arranged in the mounting groove, is connected with the first pen shell and the extension part and pushes the first pen shell and the extension part to be away from each other; a first limiting part is arranged in the mounting groove, and a second limiting part matched with the first limiting part is arranged on the extension part; when the extension part extends out of the mounting groove and is exposed out of the charging module, the first limiting part abuts against the second limiting part; according to the scheme, the second pen shell can be popped out relative to the first pen shell when connection is removed, the charging module is exposed, and a user can conveniently and rapidly complete charging operation; the limiting structure ensures the stability of the pop-up state, prevents the structure from loosening, and gives consideration to the operation convenience and the circuit connection stability. In a non-charging state, the charging module is hidden along with the extension part, and dustproof, waterproof and attractive effects are achieved.

Description

Technical Field

[0001] This invention relates to the field of pen products technology, and in particular to a pen with a light source structure. Background Technology

[0002] Currently, some writing pens with lighting functions on the market have attempted to integrate light sources, power supplies, and control modules into the traditional pen structure to achieve auxiliary functions such as illumination or detection. To avoid exposing the charging port and achieve dust and water resistance, most of these electronic pens use a simple flip-top charging interface. However, the flip-top is prone to loosening or falling off after prolonged use, resulting in a poor user experience. In addition, some products adopt a detachable design, making the charging components separable. While this type of structure is more convenient and improves the user experience, it carries risks such as component loss, circuit breakage, and poor contact. Summary of the Invention

[0003] This invention provides a pen with a light source structure, aiming to solve the problem that existing pen products with lighting functions have difficulty in balancing ease of operation and circuit stability in their charging structures.

[0004] To achieve the above objectives, this application proposes a pen with a light source structure, comprising:

[0005] The first pen casing has an axially formed mounting groove inside it.

[0006] A second pen casing has an extension facing the mounting groove; a charging module is provided on the extension.

[0007] The first pen shell and the second pen shell are rotatably connected; when assembled in place, the extension is accommodated in the mounting groove;

[0008] An elastic element is disposed in the mounting groove, the elastic element connects the first pen shell and the extension and has a tendency to push the two away from each other;

[0009] A first limiting part is provided on the inner sidewall of the mounting groove, and a second limiting part is provided on the extension part to cooperate with the first limiting part; when disassembling, the extension part extends out of the mounting groove and exposes the charging module, and the first limiting part and the second limiting part abut against each other to limit the second pen shell.

[0010] In some embodiments, a light source assembly is provided inside the pen head of the first pen shell;

[0011] The extension is provided with an axial through groove, a mounting platform is provided in the through groove, and a first circuit board is provided on the mounting platform;

[0012] The first circuit board is electrically connected to the first pen shell via the mounting platform, and the first pen shell is electrically connected to the light source assembly.

[0013] In some embodiments, the first pen housing has an internal cavity for accommodating the pen refill assembly, and the first circuit board is electrically connected to the light source assembly via the pen refill assembly that passes through the mounting groove and the mounting platform in sequence.

[0014] The first pen casing also contains an insulating component for separating the pen refill assembly from the first pen casing.

[0015] In some embodiments, the pen refill assembly includes a pen refill disposed within the receiving cavity and a pen refill clamp axially sleeved on the pen refill;

[0016] The mounting groove and the mounting platform are respectively provided with a first through hole and a second through hole;

[0017] The pen refill holder has an axially arranged conductive post at one end facing the second pen shell, and the conductive post passes through the first through hole and the second through hole in sequence.

[0018] The end of the conductive post facing the second pen shell is connected to an elastic conductive element that is electrically connected to the first circuit board.

[0019] In some embodiments, the elastic element is a first spring;

[0020] The lower end of the mounting platform is provided with a first annular groove for accommodating the first spring, and the two ends of the first spring respectively abut against the bottom of the first annular groove and the mounting groove.

[0021] The conductive post and the elastic conductive element are axially inserted inside the first spring.

[0022] In some embodiments, the upper surface of the mounting platform is provided with a plurality of positioning feet for limiting the first circuit board, and the lower end of the first circuit board is provided with a conductive support sheet.

[0023] The elastic conductive element is a second spring, which is sleeved on the outside of the conductive post and passes through the second through hole to abut against the conductive support piece to achieve electrical connection.

[0024] In some embodiments, the pen refill includes a pen tip portion, and a pen tip spring is sleeved on the pen tip portion;

[0025] A second circuit board is provided inside the receiving cavity, and a third through hole is provided on the second circuit board for the pen tip to pass through;

[0026] One end of the second circuit board abuts against the pen tip spring to achieve electrical connection, and the other end contacts the first pen shell through an elastic sheet disposed in the receiving cavity to achieve electrical connection;

[0027] The cavity is also provided with a fixing member for fixing the second circuit board, and the light source assembly is disposed on the fixing member and electrically connected to the second circuit board.

[0028] In some embodiments, the insulating assembly includes a first insulating sleeve for isolating the elastic element from the pen refill assembly; the first insulating sleeve is disposed on the mounting platform and extends through the second through hole and the first through hole into the receiving cavity; the conductive post passes through the first insulating sleeve;

[0029] The insulating assembly also includes a second insulating sleeve located within the receiving cavity and sleeved outside the pen refill holder;

[0030] The insulating component also includes a third insulating sleeve located within the receiving cavity and sleeved over the pen tip and the pen tip spring.

[0031] In some embodiments, a limiting ring is fitted onto the end of the extension that is away from the first pen shell; when assembled, the limiting ring is located outside the mounting groove, and the limiting ring abuts against the first pen shell and the second pen shell respectively;

[0032] The extension portion has a second annular groove near the limiting ring, and a sealing ring is fitted in the second annular groove; when assembled, the sealing ring is located in the mounting groove.

[0033] In some embodiments, the first pen shell and the second pen shell are connected by threads; the threaded structure of the first pen shell is disposed at the end of the inner sidewall of the mounting groove away from the groove opening, and the threaded structure of the second pen shell is disposed at the end of the extension near the mounting groove.

[0034] The beneficial effects of this invention are as follows: By providing a mounting groove inside the first pen shell, an extension on the second pen shell, and an elastic element between them, the second pen shell can automatically pop out when disassembled, exposing the charging module mounted on the extension. This achieves a charging method without disassembling the structure, significantly improving ease of use. In the non-charging state, the extension is completely contained within the mounting groove, and the charging module is hidden inside the structure, effectively improving the overall integrity and aesthetics of the product, while also providing some dust and water resistance. Simultaneously, the limiting action between the first and second limiting parts maintains structural stability during charging, preventing circuit interruption. This balances ease of operation, safety, and structural integrity, overcoming the various shortcomings of existing pens with lighting functions in terms of cumbersome operation and unstable circuitry in their charging structures. Attached Figure Description

[0035] Figure 1 This is a front view of a pen with a light source structure during disassembly and assembly according to the present invention;

[0036] Figure 2 This is a front view of a pen with a light source structure assembled in place according to the present invention;

[0037] Figure 3 This is a cross-sectional structural diagram of a pen with a light source structure during disassembly and assembly according to the present invention.

[0038] Figure 4 This is a cross-sectional structural diagram of a pen with a light source structure when it is assembled in place according to the present invention.

[0039] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point A;

[0040] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point B;

[0041] Figure 7 for Figure 4 Enlarged schematic diagram of the structure at point C;

[0042] Figure 8 This is an exploded view of a pen with a light source structure according to the present invention.

[0043] Figure 9 This is a top-view schematic diagram of the mounting platform for a pen with a light source structure according to the present invention.

[0044] Figure 10 This is a schematic diagram of the mounting platform of a pen with a light source structure according to the present invention, viewed from an upward angle.

[0045] Figure 11This is a schematic diagram of the overall structure of a pen with a light source structure according to the present invention;

[0046] Figure 12 This is a schematic diagram of a partially exploded structure of a pen with a light source structure according to the present invention.

[0047] In the picture:

[0048] label name label name 100 Pen with light source structure 1222 First annular groove 110 First pen case 1223 Positioning feet 120 Second pen case 1224 Conductive support sheet 130 Charging module 1225 First circuit board 140 Light source components 1226 Third annular groove 150 Pen refill assembly 123 Limiting ring 160 Insulation components 124 sealing ring 170 Tail light source assembly 125 Pen clip 180 Pen clip light source assembly 126 Third circuit board 111 Mounting slot 127 Power switch 1111 First through hole 128 Slider 112 elastic element 1281 magnet 113 First limiting section 1282 Positioning components 114 Receiving cavity 129 sliding groove 115 Second circuit board 1291 positioning groove 1151 Third through hole 151 pen refill 116 Fasteners 1511 Pen tip 117 elastic sheet 1512 Pen tip spring 118 pen tip 152 Pen refill holder 121 extension 1521 Conductive pillar 1211 Second limiting part 153 Elastic conductive components 1212 Second annular groove 161 First insulating sleeve 122 Mounting platform 162 Second insulating sleeve 1221 Second through hole 163 Third insulating sleeve Detailed Implementation

[0049] The solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0051] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0052] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0053] This invention proposes a pen 100 with a light source structure, referring to... Figures 1 to 12 ,include:

[0054] The first pen housing 110 has an axially formed mounting groove 111 inside the first pen housing 110;

[0055] The second pen shell 120 has an extension 121 facing the mounting groove 111; a charging module 130 is provided on the extension 121.

[0056] The first pen shell 110 and the second pen shell 120 are rotatably connected; when assembled in place, the extension 121 is accommodated in the mounting groove 111;

[0057] The elastic element 112 is disposed in the mounting groove 111. The elastic element 112 connects the first pen shell 110 and the extension 121 and has a tendency to push the two away from each other.

[0058] A first limiting part 113 is provided on the inner sidewall of the mounting groove 111, and a second limiting part 1211 is provided on the extension 121 to cooperate with the first limiting part 113. When disassembling, the extension 121 extends out of the mounting groove 111 and exposes the charging module 130, and the first limiting part 113 and the second limiting part 1211 abut against each other to limit the second pen shell 120.

[0059] In this embodiment, the first pen shell 110 is the front structure of the pen body, and an axial mounting groove 111 for accommodating structural components is provided in its inner axis. Preferably, it is a cylindrical structure. The opening of the mounting groove 111 faces the second pen shell 120, and the bottom of the mounting groove 111 is provided with a flat surface for abutting against the elastic component 112. The inner sidewall of the mounting groove 111 protrudes inward near the opening to form a first limiting part 113, which is used to cooperate with the first limiting part 113 on the second pen shell 120 for limiting.

[0060] The second pen shell 120 is the rear structure of the pen body. One end of it extends toward the first pen shell 110 to form an extension 121. The extension 121 is preferably a slender columnar body that matches the shape of the mounting groove 111, with a diameter slightly smaller than the inner diameter of the mounting groove 111, so as to facilitate sliding into the mounting groove 111. A second limiting part 1211 is provided on the outer side of the extension 121 near its end. It can be a convex ring, a limiting shoulder, or a positioning protrusion, which is used to cooperate with the first limiting part 113 to achieve rotation stop.

[0061] The charging module 130 is disposed within the extension 121, and preferably includes a charging interface. The charging interface is disposed on the outer surface of the extension 121 away from the second pen shell 120, facing the outside of the extension 121, and is located inside the first pen shell 110 after assembly, achieving hidden storage. This structure ensures that the overall appearance of the pen is simple and without protrusions, and avoids the risk of contamination or water ingress caused by the exposed charging interface.

[0062] The elastic element 112 is disposed between the bottom of the mounting groove 111 and the end of the extension 121, preferably a helical compression spring, one end of which abuts against the bottom of the mounting groove 111 of the first pen shell 110, and the other end abuts against the extension 121 or other structural components on the extension 121; the elastic element 112 is used to push the extension 121 outward in the disassembled state.

[0063] In this embodiment, the first limiting part 113 in the mounting groove 111 and the second limiting part 1211 on the extension 121 form a limiting structure; when the second pen shell 120 rotates to the preset release angle, the elastic member 112 pushes the extension 121 outward until the first limiting part 113 and the second limiting part 1211 abut against each other, completing the limiting state of "the structure pops out but does not break".

[0064] In this embodiment, the pen body is in a non-charging state when it is fully assembled. In this state, the extension 121 is completely accommodated inside the mounting slot 111, and the charging module 130 is covered by the first pen shell 110, forming a hidden state. The overall pen body has a complete and beautiful shape and good protective performance.

[0065] When charging is required, the assembly conversion state can be released. The user can rotate the second pen shell 120 to release the threaded connection or limiting structure between it and the first pen shell 110, thus eliminating assembly interference. At this time, the elastic element 112 in the mounting groove 111 automatically pops out in an unrestricted state, pushing the extension 121 to move outward along the axial direction, exposing the charging interface located on the extension 121.

[0066] When the extension 121 moves to the preset travel distance, the first limiting part 113 and the second limiting part 1211 abut against each other, forming a limiting stop to prevent the extension 121 from completely detaching from the first pen shell 110. The user can then directly connect the charging cable to complete the charging operation. Throughout the process, the first pen shell 110 and the second pen shell 120 remain connected, the circuit remains conductive, the structure is not loose, and the use is more stable and reliable.

[0067] After charging is complete, the user can rotate the second pen case 120 in the opposite direction to compress the elastic element 112 again and retract the extension 121 into the mounting slot 111, restoring it to its original hidden state.

[0068] This design features high structural integration. By incorporating an installation slot 111 within the first pen housing 110, a functional space is created that combines a conductive path with structural storage, reducing product size. Operation is highly convenient; charging only requires rotating the pen housing, eliminating the need to disassemble the structure or remove components, making operation intuitive and effortless. The charging module 130 is well-concealed, with the extension 121 completely housed within the first pen housing 110, enhancing overall product aesthetics and safety. A limiting structure prevents accidental detachment; even after the elastic element 112 pushes the structure out automatically, the limiting structure prevents the extension 121 from slipping or being lost during use, a significant departure from traditional detachable charging methods on the market. The circuit connection is stable; even during charging, the first pen housing 110 and the second pen housing 120 maintain structural connection, ensuring continuous internal circuitry and preventing charging interruptions or poor contact. It offers excellent dust and water resistance; the tightly fitted overall structure reduces the intrusion of external particles and moisture, improving service life and reliability.

[0069] Furthermore, a light source assembly is provided inside the pen head 118 of the first pen shell 110;

[0070] An axial through groove is provided in the extension 121, and a mounting platform 122 is provided in the through groove. A first circuit board 1225 is provided on the mounting platform 122. The first circuit board 1225 is preferably located close to the bottom of the charging module 130 to facilitate the integrated management of charging input. The mounting platform 122 not only serves as the mounting structure for the first circuit board 1225, but its bottom also serves as the contact surface between the extension 121 and the elastic member 112 in the mounting groove 111. That is, one end of the elastic member 112 directly abuts against the limiting step at the bottom of the mounting platform 122, thereby structurally completing the pop-out and spring-back action of the second pen shell 120.

[0071] The first circuit board 1225 is electrically connected to the first pen shell 110 via the mounting platform 122, and the first pen shell 110 is electrically connected to the light source assembly.

[0072] In the conductive path, the first circuit board 1225 contacts the first pen shell 110 via the mounting platform 122 to achieve electrical connection. The body of the first pen shell 110 is made of conductive material and is further electrically connected to the light source assembly of the pen tip 118, forming one end of the closed circuit loop. The first pen shell 110 is made of conductive material, serving both as structural support and as part of the electrical conduction path.

[0073] Furthermore, the first pen housing 110 has an internal cavity 114 for accommodating the pen refill assembly 150. The first circuit board 1225 is also electrically connected to the light source assembly through the pen refill assembly 150 that passes through the mounting groove 111 and the mounting platform 122 in sequence. The other output terminal of the first circuit board 1225 is electrically connected to the light source assembly through the pen refill assembly 150 that is axially disposed inside the first pen housing 110, forming another conduction path of the circuit.

[0074] The first pen shell 110 is also provided with an insulating component 160 for separating the pen refill assembly 150 from the first pen shell 110; in order to prevent the current of the pen refill assembly 150 from being directly short-circuited with the first pen shell 110, the cavity 114 is provided with multiple insulating structures to form the insulating component 160.

[0075] By employing a connection method where the pen refill assembly 150 and the first pen shell 110 form the two poles of the circuit, the first circuit board 1225 can still continuously supply power to the light source assembly even in different structural states (when the second pen shell 120 is fully assembled or partially popped out), further improving the circuit adaptability and stability of the entire pen in complex structures. Even if the first pen shell 110 and the second pen shell 120 rotate or are relatively displaced, or as long as they remain structurally connected, the circuit maintains closed-loop conduction, without affecting the normal operation of the light source assembly. This ensures that charging, writing, and illumination operations can be performed simultaneously, enhancing product reliability.

[0076] Furthermore, the pen refill assembly 150 includes a pen refill 151 disposed in the receiving cavity 114, and a pen refill clamping member 152 axially sleeved on the pen refill 151; the two are arranged axially to form the core structure of the pen refill assembly 150.

[0077] The mounting groove 111 and the mounting platform 122 are respectively provided with a first through hole 1111 and a second through hole 1221; in order to realize the passage of the current path, the mounting groove 111 and the mounting platform 122 in the first pen shell 110 are respectively provided with a first through hole 1111 and a second through hole 1221, and the first through hole 1111 and the second through hole 1221 are aligned with each other in the axial direction to form a path for the conductive structure to pass through.

[0078] The pen refill holder 152 has a conductive post 1521 axially disposed at one end facing the second pen shell 120. The conductive post 1521 passes through the first through hole 1111 and the second through hole 1221 in sequence. The conductive post 1521 can be a metal or plated conductive component. It extends along the axial direction of the pen refill assembly 150 and passes through the first through hole 1111 and the second through hole 1221 in sequence until it extends to the mounting platform 122 located in the extension 121.

[0079] The end of the conductive post 1521 facing the second pen shell 120 is connected to an elastic conductive element 153 that is electrically connected to the first circuit board 1225. During assembly or use, the pen refill 151 may experience changes in its state, such as popping out, retracting, or slight shaking. Traditional rigid electrical connection structures are difficult to adapt to this axial displacement, which can easily lead to misalignment of contact points, resulting in poor conductivity or temporary power outage.

[0080] Therefore, in this embodiment, the elastic conductive element 153 is structurally compatible with the conductive post 1521. On the one hand, it adapts to the axial floating of the pen refill assembly 150 through its own elastic deformation capability. On the other hand, it is always attached to the conductive support sheet 1224 under the circuit board with a certain pre-pressure, effectively absorbing the interference caused by small displacements and ensuring that the circuit connection can still be maintained in dynamic states such as the pen refill 151 popping out, retracting, and writing shaking.

[0081] The use of the elastic conductive element 153 can maintain the reliability of electrical contact under assembly errors, thermal expansion and contraction or slight displacement, and avoid poor contact caused by structural vibration or sliding. While improving the reliability of use, it also further enhances the functional integrity of the pen refill assembly 150 as the central part of the conductive path, and realizes the integration and coexistence of writing function and electronic function.

[0082] With the above configuration, current can be transmitted from the output terminal of the first circuit board 1225 along the elastic conductive member 153 to the conductive post 1521, and then through the pen tip holder 152 and the pen tip 151 to the light source assembly of the pen head 118, thereby powering the light source assembly. This structure enables the pen tip 151 to not only have a writing function, but also participate in the formation of the conductive path, effectively utilizing the structural space and improving the overall functional integration.

[0083] Furthermore, the elastic element 112 is a first spring;

[0084] The lower end of the mounting platform 122 is provided with a first annular groove 1222 for accommodating the first spring, and the two ends of the first spring respectively abut against the bottom of the first annular groove 1222 and the mounting groove 111.

[0085] The conductive post 1521 and the elastic conductive element 153 are axially inserted inside the first spring.

[0086] In this embodiment, the elastic element 112 is a first spring, disposed between the axial bottom of the mounting groove 111 and the mounting platform 122; see reference. Figure 9 To ensure that the first spring has a stable installation and working position, a first annular groove 1222 is provided at the lower end of the mounting platform 122. The first annular groove 1222 is a radial annular limiting structure located in the docking area between the extension 121 and the first pen shell 110. One end of the first spring is embedded in the first annular groove 1222, and the other end abuts against the bottom of the mounting groove 111 of the first pen shell 110.

[0087] With the above settings, the first spring is in a reliable limiting state in the axial direction. It can be compressed during structural assembly and can also quickly release its elastic force after the assembly interference is resolved, pushing the extension 121 to automatically pop outward.

[0088] In addition, to achieve the integration of structure and circuit, the conductive post 1521 and the elastic conductive element 153 on it are together inserted into the internal space of the first spring, and the axial connection path is realized through the hollow structure of the spring; this can effectively save internal space and improve the structural compactness of the overall system.

[0089] Furthermore, the upper surface of the mounting platform 122 is provided with a plurality of positioning feet 1223 for limiting the first circuit board 1225, and the lower end of the first circuit board 1225 is provided with a conductive support piece 1224; see reference Figure 8 The upper surface of the mounting platform 122 is provided with a plurality of positioning feet 1223 for limiting the first circuit board 1225, preferably integrally formed positioning posts or limiting blocks, distributed in the edge area of ​​the circuit board.

[0090] Reference Figure 5 , Figure 6 and Figure 10 In this embodiment, the conductive support sheet 1224 has a bridge-shaped structure and contact terminals at both ends that are fixed and electrically connected to the first circuit board 1225; in some other embodiments, the conductive support sheet 1224 may be a metal spring sheet or a solder point, used to provide an electrical contact interface with the elastic conductive member 153.

[0091] The elastic conductive element 153 is a second spring. The second spring is sleeved on the outside of the conductive post 1521 and passes through the second through hole 1221 to abut against the conductive support piece 1224 to achieve electrical connection.

[0092] One end of the second spring is sleeved on the outside of the conductive post 1521, and the other end passes through the second through hole 1221 and abuts against the conductive support plate 1224, forming a flexible connection path from the first circuit board 1225 to the conductive post 1521. This structure combines the dual functions of mechanical elasticity and electrical conduction. Under working conditions such as the rotation of the second pen shell 120, the movement of the pen core 151, and slight shaking of the structure, the second spring can maintain electrical contact while adapting to slight displacement, ensuring continuity of conduction.

[0093] With the above configuration, the first circuit board 1225 can be stably installed in the extension 121, and at the same time connected to the conductive post 1521 by the second spring, realizing a complete closed loop of the power transmission path and providing reliable power supply for the light source assembly.

[0094] Furthermore, the pen refill 151 includes a pen tip 1511, on which a pen tip spring 1512 is fitted. The pen refill 151 includes a pen tip 1511 located at its end, which is used to realize the writing function and as part of the circuit conduction. The pen tip spring 1512 is fitted on the outside of the pen tip 1511. The pen tip spring 1512 can be a compression metal spring, used to achieve elastic contact in the axial direction.

[0095] A second circuit board 115 is provided inside the cavity 114. A third through hole 1151 is provided on the second circuit board 115 for the pen tip 1511 to pass through. The third through hole 1151 serves as the passage position for the pen core 151, allowing the pen tip 1511 to pass through the second circuit board 115 without affecting the structural stability.

[0096] One end of the second circuit board 115 abuts against the pen tip spring 1512 to achieve electrical connection, and the other end contacts the first pen shell 110 through the elastic sheet 117 disposed in the receiving cavity 114 to achieve electrical connection; one contact end of the second circuit board 115 abuts against the pen tip 1511 through the pen tip spring 1512 to form a positive current input path; the other contact end contacts the first pen shell 110 through the elastic sheet 117 disposed in the receiving cavity 114 to form a grounding path, thereby achieving closed-loop circuit conduction.

[0097] Reference Figure 10 The cavity 114 also includes a fixing member 116 for securing the second circuit board 115. The light source assembly is mounted on the fixing member 116 and electrically connected to the second circuit board 115. To ensure that the second circuit board 115 does not shift during use, a dedicated fixing member 116 is provided within the cavity 114 for stable mounting of the second circuit board 115. The light source assembly is positioned on the corresponding location of the fixing member 116 and communicates with the second circuit board 115 via electrical connection to achieve power supply and signal control.

[0098] In this embodiment, the pen tip spring 1512 not only participates in the circuit connection but also undertakes the axial control function of the pen refill assembly 150. Specifically, the pen tip spring 1512 is disposed between the pen tip 1511 and the internal structure of the receiving cavity 114. When the user performs writing operations or pushes the pen refill 151, the pen tip spring 1512 can be compressed to push the pen refill 151 out; in the relaxed state, the pen tip spring 1512 releases the rebound force to automatically retract the pen refill 151 back to its original position, realizing the ejection and retraction control function of the pen refill 151, improving the convenience of use and writing stability.

[0099] Reference Figure 10 In this embodiment, the elastic sheet 117 is preferably an annular structure, disposed between the second circuit board 115 and the fixing member 116, structurally surrounding the pen refill 151. The elastic sheet 117 also has corresponding through holes for the pen refill assembly 150 to pass through. The elastic sheet 117 has elastic deformation capability in the radial direction, allowing it to expand outwards in the installed state, forming a stable radial electrical contact with the inner wall of the first pen shell 110, thereby achieving electrical conductivity between the second circuit board 115 and the first pen shell 110. This structure effectively avoids poor contact caused by assembly tolerances and material deformation, ensuring circuit continuity.

[0100] Furthermore, the insulating assembly 160 includes a first insulating sleeve 161 for isolating the elastic element 112 from the pen refill assembly 150; the first insulating sleeve 161 is disposed on the mounting platform 122 and extends through the second through hole 1221 and the first through hole 1111 into the receiving cavity 114; the conductive post 1521 passes through the first insulating sleeve 161; the first insulating sleeve 161 is sleeved on the outside of the conductive post 1521 and the second spring, effectively isolating the conductive post 1521 and the second spring from the surrounding structure, preventing the elastic element 112, the first housing, etc. from direct contact with the conductive post 1521 and the second spring, thereby improving electrical safety.

[0101] In addition, to prevent the insulation structure from shifting or loosening in the conductive channel, a third annular groove 1226 is provided on the upper surface of the mounting platform 122, i.e., around the second through hole 1221, for holding and positioning the first insulating sleeve 161. This structure ensures that the first insulating sleeve 161 is in a controlled state in both the axial and radial directions, preventing the insulation layer from shifting due to structural shaking or pressure changes, thereby improving the electrical safety and anti-interference capability of the entire structure.

[0102] The insulating assembly 160 also includes a second insulating sleeve 162 located within the receiving cavity 114 and sleeved outside the pen refill holder 152; the second insulating sleeve 162 completely separates the pen refill 151 structure from the inner wall of the first pen shell 110, preventing accidental contact during structural micro-movements or vibrations.

[0103] The insulating assembly 160 also includes a third insulating sleeve 163 located within the receiving cavity 114 and sleeved over the pen tip 1511 and the pen tip spring 1512; the third insulating sleeve 163 mainly prevents the pen tip 1511, the pen tip spring 1512 and the first pen shell 110 from forming a short circuit or interference, especially maintaining electrical independence when the pen refill 151 is frequently inserted or removed or when writing.

[0104] Reference Figure 4 In this embodiment, an insulating component 160 composed of multiple parts is provided to isolate areas within the structure that may pose a conductive risk. The insulating component 160 can be made of nylon, silicone, or other high dielectric strength materials. The three-section insulating structure together forms an insulating barrier between the pen refill component 150 and the first pen shell 110, which not only effectively prevents short circuits and accidental triggering, but also improves the operational safety and maintainability of the entire pen under a high-density conductive structure.

[0105] Furthermore, a limiting ring 123 is fitted onto the end of the extension 121 opposite to the first pen shell 110; when assembled, the limiting ring 123 is located outside the mounting groove 111, and the limiting ring 123 abuts against the first pen shell 110 and the second pen shell 120 respectively; to improve the stability of the pen body structure connection and enhance the appearance integrity, a limiting ring 123 is fitted onto the end of the extension 121 of the second pen shell 120 opposite to the first pen shell 110. The limiting ring 123 is preferably an annular structure, which has a certain decorative effect.

[0106] Reference Figure 1 , Figure 5 and Figure 6 When the first pen shell 110 and the second pen shell 120 are assembled in place, the limiting ring 123 is located outside the mounting groove 111, and its two ends abut against the end faces of the first pen shell 110 and the second pen shell 120 respectively, forming an axial stop to prevent the extension 121 from exceeding the preset stroke during rotation assembly or pop-out, thereby enhancing the structural limiting feel and visual consistency.

[0107] The extension 121 has a second annular groove 1212 near the limiting ring 123, and a sealing ring 124 is fitted in the second annular groove 1212; when assembled, the sealing ring 124 is located in the mounting groove 111.

[0108] Meanwhile, to improve the sealing performance at the connection, a second annular groove 1212 is provided near the limiting ring 123 on the extension 121, and a sealing ring 124 is embedded in the second annular groove 1212. The sealing ring 124 is preferably made of rubber or elastomer, and after installation, it is located inside the mounting groove 111 of the first pen shell 110, forming a circumferential fit with its inner wall. This structure provides effective damping and sealing performance when the pen is closed, preventing dust, moisture, etc. from entering the internal structural area, while improving the assembly feel and service life.

[0109] Furthermore, the first pen shell 110 and the second pen shell 120 are connected by threads; the threaded structure of the first pen shell 110 is located on the inner side wall of the mounting groove 111 away from the groove opening, and the threaded structure of the second pen shell 120 is located on the extension 121 near the mounting groove 111.

[0110] To achieve a detachable connection between the first pen shell 110 and the second pen shell 120, in this embodiment, they are connected by a threaded structure (not shown in the figure). The thread of the first pen shell 110 is provided on the inner side wall of the mounting groove 111, specifically at the end away from the opening of the mounting groove 111, that is, the end near the bottom of the groove; the thread of the second pen shell 120 is provided on the outer wall of the extension 121, specifically at the end of the extension 121 that is inserted into the first pen shell 110.

[0111] The above structure allows users to lock or release the first pen shell 110 and the second pen shell 120 through a simple rotation operation. Compared with snap-fit ​​connections, threaded connections are superior in terms of operational precision, anti-loosening capability, and processing adaptability, and provide delicate rotational feedback and damping feel while maintaining the connection.

[0112] With this structure, assembly interference can be released when charging is needed, allowing the extension 121 to pop out automatically under the action of the elastic member 112, while maintaining the connection between the structures, thus achieving stable charging and power supply to the light source; after charging is completed, the user can rotate the second pen shell 120 to relock it, thereby resetting the pen body.

[0113] Reference Figures 11 to 12 To enhance the pen's versatility and usability, the pen 100 with a light source structure in this embodiment is equipped with three different light sources:

[0114] The light source assembly (i.e., the light source assembly set on the pen head 118 of the first pen shell 110, which is referred to as the pen tip light source assembly or pen tip light source for ease of description) is mainly used for illumination during writing, making it easier to locate or identify handwriting in dim environments.

[0115] The tail light source assembly 170 is located at the end of the second pen shell 120 away from the extension 121. The light source can be a laser, ultraviolet light or red light, and is used for laser indication, banknote verification or warning prompts, etc.

[0116] The pen clip light source assembly 180 is set on the pen clip 125 of the second pen shell 120. It can emit white light and is suitable for use as a portable clip light when clipped to the brim of a hat, pocket, etc., so as to facilitate local lighting and free up the hands.

[0117] To enable flexible switching between the three light sources, the second pen casing 120 is equipped with a power switch 127 and a light source switching button on the outside, which are used by the user to operate and control the working status of the light source.

[0118] The power switch 127 is used to control the on / off state of the overall light source circuit, that is, to turn on or off the currently active light source component; the light source switching key is used to switch between the three light sources, and the operation mode is a sliding switching structure.

[0119] In this embodiment, a light source switching component is also included, which is electrically connected to the pen tip light source assembly, the tail light source assembly 170, and the pen clip light source assembly 180; the light source switching component includes:

[0120] The slider 128 is the body of the power switch 127 and is located in the sliding groove 129 on the outer surface of the second pen shell 120. It can move axially within the sliding groove 129. Multiple positioning grooves 1291 are axially formed on the inner side wall of the sliding groove 129.

[0121] Magnet 1281 is fixed to one end face of slider 128 facing the second pen shell 120 and moves together with slider 128;

[0122] Positioning component 1282, which is the light source switching key, is located on the side wall of sliding component 128 and cooperates with multiple positioning slots 1291 on the side wall of sliding groove 129 to achieve locking point positioning;

[0123] A Hall sensor (not shown in the figure) is located on the third circuit board 126 inside the second pen housing 120, arranged along the moving path of the slider 128, and is used to sense the position change of the magnet 1281.

[0124] In actual operation, the user pushes the slider 128 to move along the sliding groove 129, and the magnet 1281 changes the relative distance between itself and the Hall sensor. The software logic on the third circuit board 126 recognizes this position change and then controls the currently activated light source output port to realize the switching operation from tail light source, pen clip light source and pen tip light source.

[0125] Meanwhile, since the slider 128 is equipped with a positioning element 1282 and works in conjunction with the three positioning slots 1291 in the slider 129, the user can obtain obvious three-stage operation feedback during the sliding process, which helps to confirm the status of the currently selected light source and improves the reliability of interaction and the feel of operation.

[0126] The third circuit board 126 (main control circuit board) is axially arranged inside the second pen shell 120 and is used to integrate functional modules such as light source control logic, power on / off, and signal recognition.

[0127] The upper end of the third circuit board 126 is connected to the pen clip light source assembly 180 via a flexible flat cable or direct connection; the lower end is connected to the first circuit board 1225 located in the extension 121, realizing the conductive connection from the main control circuit board to the pen tip light source and power module; the third circuit board 126 is also connected to the drive line of the tail light source assembly 170, completing the unified management of the three light sources.

[0128] The power switch 127, the sliding switch key, the Hall sensor, the identification logic circuit, the MCU chip, etc. are all concentrated in the area where the third circuit board 126 is located, making the overall control system structure more compact and integrated.

[0129] With the above structural configuration, users only need to operate the two control buttons on the outside of the second pen shell 120 to achieve complete on / off control and multiple light source switching functions, without the need for disassembly or complicated button identification.

[0130] In summary, the pen 100 with a light source structure proposed in this invention has the following comprehensive advantages in terms of structural design and functional implementation:

[0131] 1. The charging module 130 is well concealed and has a high overall structural integrity: By setting the charging module 130 on the extension 121 of the second pen shell 120, and being able to be completely stored in the mounting slot 111 of the first pen shell 110 when not charging, the pen body has a simple and beautiful appearance, avoiding problems such as easy contamination and damage caused by exposed charging interface, and significantly improving the overall texture and protection performance of the product.

[0132] 2. The charging structure is easy to operate and provides an excellent user experience: The present invention uses a threaded connection and elastic element 112 to allow the user to simply rotate the second pen shell 120 during charging, which will automatically pop out the extension 121 and expose the charging module 130. The operation is smooth and intuitive, eliminating the need for disassembly and assembly, and improving the ease of use and user-friendliness of the pen.

[0133] 3. Charging, lighting and writing functions can operate in parallel with high structural synergy: Through the complete conductive path design and the cooperation of the limiting structure, this invention achieves a stable circuit connection between the first pen shell 110 and the second pen shell 120 even when the extension 121 is popped out and charging. This supports the continuous operation of the light source component during charging, ensuring that the writing and lighting functions are not interrupted, and improving the continuity and reliability of the product in actual use.

[0134] 4. Diverse light sources to meet various needs: This invention is equipped with three functionally differentiated light source components, including a pen tip light source component for writing illumination, a pen clip light source component 180 that can be used as a small portable lamp, and a tail light source component 170 suitable for laser indication or safety prompts, which meets the diverse needs of users for lighting, indication, and emergency response in different environments and expands the functional boundaries of the product.

[0135] 5. Intelligent light source control and clear operation feedback: This invention adopts a non-contact identification structure using a slider 128, a magnet 1281, and a Hall sensor. It also achieves graded physical feedback through a three-segment positioning groove 1291 design. Combined with the unified management logic of the main control circuit board, users can easily switch between the three light sources by sliding, which not only provides a good operating feel but also ensures accurate switching and stable control.

[0136] 6. High structural integration, easy to manufacture and assemble: All functional components, such as circuit boards, elastic components, insulating components, and conductive paths, are modularly integrated and nested inside the pen shell, effectively utilizing space resources, reducing the risk of component interference, and facilitating later mass production and structural maintenance.

[0137] In summary, this invention not only solves the compatibility problem between charging stability and ease of operation at the structural level, but also realizes intelligent and diversified light source control at the functional level. Its overall design has significant practicality and market application prospects.

[0138] The above description is only a part or preferred embodiment of the present invention. Neither the text nor the drawings should limit the scope of protection of the present invention. All equivalent structural transformations made using the content of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A pen with a light source structure, characterized in that, include: The first pen casing has an axially formed mounting groove inside it. A second pen casing has an extension facing the mounting groove; a charging module is provided on the extension. The first pen shell and the second pen shell are rotatably connected; when assembled in place, the extension is accommodated in the mounting groove; An elastic element is disposed in the mounting groove, the elastic element connects the first pen shell and the extension and has a tendency to push the two away from each other; A first limiting part is provided on the inner sidewall of the mounting groove, and a second limiting part is provided on the extension part to cooperate with the first limiting part; when disassembling, the extension part extends out of the mounting groove and exposes the charging module, and the first limiting part and the second limiting part abut against each other to limit the second pen shell.

2. The pen with a light source structure according to claim 1, characterized in that, A light source assembly is provided inside the pen tip of the first pen casing; The extension is provided with an axial through groove, a mounting platform is provided in the through groove, and a first circuit board is provided on the mounting platform; The first circuit board is electrically connected to the first pen shell via the mounting platform, and the first pen shell is electrically connected to the light source assembly.

3. The pen with a light source structure according to claim 2, characterized in that, The first pen casing has an internal cavity for accommodating the pen refill assembly, and the first circuit board is electrically connected to the light source assembly via the pen refill assembly that passes through the mounting groove and the mounting platform in sequence. The first pen casing also contains an insulating component for separating the pen refill assembly from the first pen casing.

4. The pen with a light source structure according to claim 3, characterized in that, The pen refill assembly includes a pen refill disposed within the receiving cavity, and a pen refill clamping member axially sleeved on the pen refill; The mounting groove and the mounting platform are respectively provided with a first through hole and a second through hole; The pen refill holder has an axially arranged conductive post at one end facing the second pen shell, and the conductive post passes through the first through hole and the second through hole in sequence. The end of the conductive post facing the second pen shell is connected to an elastic conductive element that is electrically connected to the first circuit board.

5. The pen with a light source structure according to claim 4, characterized in that, The elastic element is a first spring; The lower end of the mounting platform is provided with a first annular groove for accommodating the first spring, and the two ends of the first spring respectively abut against the bottom of the first annular groove and the mounting groove. The conductive post and the elastic conductive element are axially inserted inside the first spring.

6. The pen with a light source structure according to claim 5, characterized in that, The upper surface of the mounting platform is provided with a plurality of positioning feet for limiting the first circuit board, and the lower end of the first circuit board is provided with a conductive support sheet. The elastic conductive element is a second spring, which is sleeved on the outside of the conductive post and passes through the second through hole to abut against the conductive support piece to achieve electrical connection.

7. The pen with a light source structure according to claim 4, characterized in that, The pen refill includes a pen tip, and a pen tip spring is sleeved on the pen tip; A second circuit board is provided inside the cavity, and a third through hole is provided on the second circuit board for the pen tip to pass through; One end of the second circuit board abuts against the pen tip spring to achieve electrical connection, and the other end contacts the first pen shell through an elastic sheet disposed in the receiving cavity to achieve electrical connection; The cavity is also provided with a fixing member for fixing the second circuit board, and the light source assembly is disposed on the fixing member and electrically connected to the second circuit board.

8. The pen with a light source structure according to claim 7, characterized in that, The insulating assembly includes a first insulating sleeve for isolating the elastic element from the pen refill assembly; the first insulating sleeve is disposed on the mounting platform and extends through the second through hole and the first through hole into the receiving cavity; the conductive post passes through the first insulating sleeve; The insulating assembly also includes a second insulating sleeve located within the receiving cavity and sleeved outside the pen refill holder; The insulating component also includes a third insulating sleeve located within the receiving cavity and sleeved over the pen tip and the pen tip spring.

9. The pen with a light source structure according to claim 8, characterized in that, A limiting ring is fitted onto the end of the extension that is away from the first pen shell; when assembled, the limiting ring is located outside the mounting groove, and the limiting ring abuts against the first pen shell and the second pen shell respectively; The extension portion has a second annular groove near the limiting ring, and a sealing ring is fitted in the second annular groove; when assembled, the sealing ring is located in the mounting groove.

10. The pen with a light source structure according to any one of claims 1 to 9, characterized in that, The first pen shell and the second pen shell are connected by threads; the threaded structure of the first pen shell is located on the inner side wall of the mounting groove away from the groove opening, and the threaded structure of the second pen shell is located on the extension near the mounting groove.

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