Multifunctional intelligent pen with split double-PCB structure

Abstract

The utility model discloses a multifunctional intelligent pen of split type double PCB structure, including pen tube, middle support, pen cap subassembly and pen tube tail cap. Middle support is sequentially provided with pen tip board, soft pack lithium cell and rear key board along its length direction, and pen tip board and rear key board are electrically connected through FPC flexible flat cable, and soft pack lithium cell is located between two PCBs. The pen tube side wall is provided with plane area and makes its cross section present D type, and the plane area is provided with key opening, indicator light opening and charging interface opening. The pen tube tail cap is internally provided with FPC antenna, FPC antenna seat, tail key and tail key spring, and the FPC antenna is pasted to the FPC antenna seat and is electrically connected with the rear key board through the wire.

Description

Technical Field

[0001] This utility model relates to the field of human-computer interaction input device technology, specifically to a multifunctional smart pen with a split dual PCB structure. Background Technology

[0002] With the rapid development of artificial intelligence technology, intelligent input devices are increasingly being used in office, education, and meeting scenarios. Traditional input devices, such as Bluetooth page turners and voice recorders, typically only have single functions and cannot meet the needs of modern office scenarios for complex functions such as "page turning, voice input, and intelligent interaction."

[0003] In existing technologies, some multi-functional pen products achieve composite functions by integrating multiple functional modules within the pen body, but they typically face the following technical problems:

[0004] First, the pen body is a slender cylindrical shape with extremely limited internal space. This necessitates integrating a large number of components within this limited space, including the main control chip, Bluetooth module, microphone, battery, charging port, and multiple buttons. The traditional design using a single PCB board results in an excessively long PCB, poor manufacturability, and the battery can only be placed at the end of the PCB, severely compressing battery capacity.

[0005] Secondly, the pen tip usually contains signal processing circuits and high-frequency signal transmission components, while the rear usually contains the main control chip, Bluetooth module, and wireless antenna. If these components are integrated on the same PCB board, it will cause mutual interference between the front-end high-frequency signal area and the rear-end wireless communication area, affecting signal quality and wireless connection stability.

[0006] Third, the cylindrical pen body is prone to rolling when placed on a desktop, and the positions of functional components such as buttons and interfaces are not easy to be uniform when laid out on the cylindrical surface, which affects the user experience.

[0007] Fourth, the power switch of traditional pen products is usually combined with the function button on the side of the pen body, which makes it easy for users to accidentally trigger it. At the same time, the internal wiring of the power button is relatively long, which affects the low power consumption management of the device.

[0008] Therefore, a new pen body structure is needed that can rationally arrange the functional modules within the limited pen body space, while solving problems such as signal interference, anti-rolling, and power management. Utility Model Content

[0009] To address the aforementioned problems in the existing technology, the purpose of this utility model is to provide a multifunctional smart pen with a split dual PCB structure. Through the split PCB design, central battery placement, D-shaped pen body design, and independent button design at the tail, it effectively solves the problems of space utilization, signal interference, anti-rolling, and power management of the slender pen body.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A multifunctional smart pen with a split dual PCB structure includes a pen tube, a middle support set inside the pen tube, a pen cap assembly set at the front end of the pen tube, and a pen tube tail cap set at the rear end of the pen tube.

[0012] The central support is provided with a pen tip plate, a soft-pack lithium battery and a rear button plate arranged sequentially along its length; the pen tip plate and the rear button plate are electrically connected by an FPC flexible cable, and the soft-pack lithium battery is located between the pen tip plate and the rear button plate.

[0013] The pen tube has a planar area on its side wall, and the planar area has a button opening, an indicator light opening, and a charging interface opening, making the cross-section of the pen tube D-shaped.

[0014] The pen tube cap contains an FPC antenna and an FPC antenna mount, with the FPC antenna being attached and fixed to the FPC antenna mount. The FPC antenna is electrically connected to the rear button panel via a wire.

[0015] Furthermore, both the pen tip plate and the rear button plate are elongated PCB boards, and the aspect ratio of the pen tip plate is smaller than that of the rear button plate.

[0016] Furthermore, a metal spring pin assembly is provided at the end of the pen tip plate, and the metal spring pin assembly and the pen cap assembly form elastic contact at the front end of the middle bracket.

[0017] Furthermore, the pen cap assembly includes a pen cap tip, a pen cap metal seat, and a front bracket locking ring; the pen cap tip is sleeved on the front end of the pen cap metal seat, and the front bracket locking ring fixes the pen cap assembly to the front end of the middle bracket.

[0018] Furthermore, the front of the rear button panel is provided with a Type-C charging port, a first micro switch, a second micro switch, and a third micro switch; the back of the rear button panel is provided with a main control chip.

[0019] Furthermore, the pen tube end cap is also provided with a tail button and a tail button spring; the pressing end of the tail button faces the end face of the pen tube end cap, the tail button spring is sleeved on the rear end of the tail button, and the other end of the tail button corresponds to the third micro switch.

[0020] Furthermore, the pouch lithium battery is a cylindrical pouch lithium battery, and the positive and negative electrodes of the pouch lithium battery are respectively soldered to the power pads of the rear button board via two wires.

[0021] Furthermore, the middle bracket is provided with slots and grooves for fixing the pen tip plate, the soft-pack lithium battery and the rear button plate; the front end of the middle bracket is provided with a bracket front cover plate, and the bracket front cover plate and the middle bracket are assembled to form a packaging cavity for the pen tip plate.

[0022] Furthermore, a MEMS microphone is also provided on the rear button panel; a microphone receiving hole is provided on the planar area of ​​the pen tube, and the position of the microphone receiving hole corresponds to that of the MEMS microphone.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] First, a split dual PCB design is adopted, which physically separates the pen tip signal processing circuit and the main control / wireless communication circuit that were originally integrated on a single PCB board. They are connected by FPC flexible ribbon cables, allowing the two PCB boards to be designed and laid out independently according to their respective circuit characteristics, while reserving space in the middle for the battery.

[0025] Secondly, the pouch lithium battery is positioned in the middle between the pen tip plate and the rear button plate, allowing the battery to utilize the central space of the pen body for a longer placement length, effectively increasing battery capacity without increasing the pen body diameter. The shape of the cylindrical pouch lithium battery is highly compatible with the internal space of the pen body, resulting in high space utilization.

[0026] Third, the pen tip signal processing circuit and the wireless communication circuit are located at both ends of the pen body. The two are naturally physically isolated by the soft-pack lithium battery, which effectively reduces the interference of high-frequency signals on wireless communication and improves the stability of Bluetooth connection.

[0027] Fourth, the pen tube adopts a D-shaped cross-section design, with button openings, indicator light openings, and charging port openings uniformly arranged on the flat area of ​​the pen body, making the location identification of each functional component more intuitive; at the same time, the D-shaped cross-section effectively prevents the pen body from rolling on the table, improving ease of use.

[0028] Fifth, the power on / off button is independently located on the end face of the pen tube cap. A dedicated tail-end button spring works in conjunction with a microswitch on the back of the rear button panel to enable button operation on the tail face. This structure physically isolates the power on / off button from the function buttons on the side of the pen body, effectively preventing accidental operation. Furthermore, the compact internal structure of the pen tube cap allows for this independent button function without increasing the pen's length.

[0029] Sixth, the FPC antenna and FPC antenna mount are independently installed inside the pen tube cap, away from the battery and main control chip in the middle of the pen body, reducing the impact of the metal battery casing and high-density circuitry on the antenna radiation performance and improving the Bluetooth signal strength. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the overall appearance of an embodiment of the present utility model;

[0031] Figure 2 This is an exploded view of the parts according to an embodiment of the present utility model;

[0032] Figure 3 This is a schematic diagram of the front layout of the rear button panel in an embodiment of the present utility model;

[0033] Figure 4 This is a schematic diagram of the rear button panel layout in an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1 - Pen tube; 2 - Middle support; 3 - Pen cap assembly; 31 - Pen cap tip; 32 - Pen cap metal base; 33 - Front support locking ring; 4 - Pen tube tail cap; 5 - Pen tip plate; 6 - Soft-pack lithium battery; 7 - Rear button plate; 8 - FPC flexible cable; 9 - FPC antenna; 10 - FPC antenna base; 11 - Button opening; 12 - Indicator light opening; 13 - Charging interface opening; 14 - Metal spring pin assembly; 15 - Type-C charging interface; 16 - First micro switch; 17 - Second micro switch; 18 - Third micro switch; 19 - Main control chip; 20 - Button spring cap; 21 - Tail button; 22 - Tail button spring; 23 - Support front cover; 24 - MEMS microphone; 25 - Microphone pickup hole. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the scope of protection of the present invention.

[0037] See Figures 1-4 This utility model embodiment provides a multifunctional smart pen with a split dual PCB structure, which mainly consists of a pen tube 1, a middle support 2, a pen cap assembly 3, a pen tube end cap 4, and circuit components housed inside the pen tube 1.

[0038] The pen tube 1 is the main outer shell of this utility model. It is a long and slender cylinder with a D-shaped cross-section, meaning that the side wall of the pen tube 1 has a planar area extending axially. From front to back, this planar area has a microphone hole 25, two button openings 11, an indicator light opening 12, and a charging port opening 13. The D-shaped cross-section prevents the pen tube 1 from rolling when placed on a horizontal table, and also provides a uniform base for arranging the external openings of various functional components, facilitating user identification and operation.

[0039] The middle bracket 2 is a long strip of plastic frame, housed inside the pen tube 1 and extending along the axial direction of the pen tube 1. The middle bracket 2 is provided with multiple slots and grooves for fixing the internal circuit components.

[0040] A pen tip plate 5, a pouch lithium battery 6, and a rear button plate 7 are sequentially arranged along the length of the central support 2. Both the pen tip plate 5 and the rear button plate 7 are elongated PCBs, electrically connected via a flexible FPC cable 8. The pouch lithium battery 6 is located between the pen tip plate 5 and the rear button plate 7, occupying the central area of ​​the pen body. This split dual-PCB structure physically separates the pen tip signal processing circuit from the main control / wireless communication circuit, while also reserving a relatively long, centrally located space for the pouch lithium battery 6, effectively increasing battery capacity.

[0041] The front end of the middle bracket 2 is provided with a bracket front cover plate 23. The bracket front cover plate 23 and the middle bracket 2 are assembled to form the encapsulation cavity of the pen tip plate 5. A metal spring ejector assembly 14 is welded to the end of the pen tip plate 5. The metal spring ejector assembly 14 extends toward the front end of the pen tube 1.

[0042] The pen cap assembly 3 is installed at the front end of the pen tube 1 and consists of a pen cap tip 31, a pen cap metal seat 32, and a front bracket locking ring 33. The pen cap tip 31 is fitted onto the front end of the pen cap metal seat 32, and the front bracket locking ring 33 fixes the entire pen cap assembly 3 to the front end of the middle bracket 2. After assembly, the inner end of the pen cap metal seat 32 forms elastic contact with the metal spring pin assembly 14 at the end of the pen tip plate 5, realizing the electrical conduction of the pen tip signal.

[0043] See Figure 3 The rear button panel 7, facing the pen tube 1, features a Type-C charging port 15, a first micro switch 16, a second micro switch 17, a third micro switch 18, and a MEMS microphone 24. The Type-C charging port 15 is located near the rear end of the rear button panel 7, its position corresponding to the charging port opening 13 on the pen tube 1. The first and second micro switches 16 and 17 are spaced apart along the length of the rear button panel 7, their positions corresponding to the two button openings 11 on the pen tube 1. The third micro switch 18 is located at the rear end of the rear button panel 7, its pressing direction facing the rear end of the pen tube 1. The MEMS microphone 24 is located at the front end of the rear button panel 7, its position corresponding to the microphone pickup hole 25 on the pen tube 1, allowing external sound to be transmitted to the MEMS microphone 24 through the microphone pickup hole 25.

[0044] Two button openings 11 on the planar area of ​​the pen tube 1 are respectively fitted with button spring caps 20, which are shaped like vertical elongated racetracks. When the user presses the button spring cap 20, the button spring cap 20 deforms inward and triggers the first micro switch 16 or the second micro switch 17 at the corresponding position on the front of the rear button plate 7.

[0045] See Figure 4 The main control chip 19 is located on the back of the rear button panel 7, on the side facing away from the pen tube 1. The main control chip 19 integrates Bluetooth communication functions and is responsible for button event detection, microphone audio acquisition, Bluetooth wireless communication, and power management.

[0046] The positive and negative terminals of the soft-pack lithium battery 6 are soldered to the power pads of the rear button board 7 via two wires. The two ends of the FPC flexible cable 8 are respectively inserted into the FPC cable connectors on the pen tip board 5 and the rear button board 7. The main body of the cable extends along one side of the soft-pack lithium battery 6 to realize signal transmission between the two PCB boards.

[0047] The pen tube end cap 4 is installed at the rear end of the pen tube 1 and is connected to the pen tube 1 by a snap-fit ​​structure. The pen tube end cap 4 contains an FPC antenna 9, an FPC antenna mount 10, a tail button 21, and a tail button spring 22.

[0048] The FPC antenna mount 10 is a cylindrical plastic component, and the FPC antenna 9 is glued and fixed to the surface of the FPC antenna mount 10. The FPC antenna 9 is electrically connected to the antenna solder joint on the rear button panel 7 via a wire. Since the FPC antenna 9 is located at the tail of the pen tube 1, away from the soft-pack lithium battery 6 and the main control chip 19 in the middle of the pen body, the metal battery casing and high-density circuitry have less impact on the antenna radiation performance, thereby improving the Bluetooth signal strength and connection stability.

[0049] The tail button 21 is located at the end face of the pen tube cap 4, with its pressing end protruding from the end hole of the pen tube cap 4. The tail button spring 22 is sleeved on the inner end of the tail button 21, keeping the tail button 21 in the reset position in the initial state. When the user presses the tail button 21, the tail button 21 moves into the pen tube 1 and triggers the third micro switch 18 on the back of the rear button plate 7; after the user releases the button, the tail button 21 returns to the initial position under the elastic force of the tail button spring 22.

[0050] The above structure completely separates the tail button 21 corresponding to the power on / off function from the elastic cap 20 of the function button on the side of the pen body in terms of physical position, effectively preventing users from accidentally triggering the power on / off operation during use. At the same time, through the compact layout structure inside the pen tube tail cap 4, the independent button, spring mechanism and FPC antenna are integrated into the limited space at the tail, without increasing the overall length of the pen tube 1.

[0051] The working principle of this utility model is briefly described as follows: When the user presses and holds the tail button 21, the main control chip 19 receives the long press signal and starts the power-on program. The smart pen initiates a Bluetooth connection through the FPC antenna 9. After the Bluetooth connection is successful, it enters the working state. When the user presses the button elastic cap 20 on the side of the pen body, it triggers the corresponding micro switch. The main control chip 19 sends the button event to the host computer via Bluetooth. When the smart pen remains still for a longer time than a preset threshold, the main control chip 19 controls it to enter a sleep state to reduce power consumption.

[0052] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the scope of protection of this utility model.

Claims

1. A multifunctional smart pen with a split dual-PCB structure, comprising a pen tube (1), a central support (2) disposed inside the pen tube (1), a pen cap assembly (3) disposed at the front end of the pen tube (1), and a pen tube tail cap (4) disposed at the rear end of the pen tube (1), characterized in that: The middle support (2) is provided with a pen tip plate (5), a soft-pack lithium battery (6) and a rear button plate (7) in sequence along its length direction; The pen tip plate (5) and the rear button plate (7) are electrically connected by an FPC flexible cable (8), and the soft-pack lithium battery (6) is located between the pen tip plate (5) and the rear button plate (7). The pen tube (1) has a planar area on its side wall, and the planar area has a button opening (11), an indicator light opening (12) and a charging interface opening (13), so that the cross-section of the pen tube (1) is D-shaped. The pen tube cap (4) contains an FPC antenna (9) and an FPC antenna mount (10). The FPC antenna (9) is attached and fixed to the FPC antenna mount (10). The FPC antenna (9) is electrically connected to the rear button plate (7) via a wire.

2. The multifunctional smart pen according to claim 1, characterized in that: Both the pen tip plate (5) and the rear button plate (7) are elongated PCB boards, and the aspect ratio of the pen tip plate (5) is smaller than that of the rear button plate (7).

3. The multifunctional smart pen according to claim 1, characterized in that: The end of the pen tip plate (5) is provided with a metal spring pin assembly (14), and the metal spring pin assembly (14) and the pen cap assembly (3) form elastic contact at the front end of the middle bracket (2).

4. The multifunctional smart pen according to claim 1, characterized in that: The pen cap assembly (3) includes a pen cap tip (31), a pen cap metal seat (32), and a front bracket locking ring (33); the pen cap tip (31) is sleeved on the front end of the pen cap metal seat (32), and the front bracket locking ring (33) fixes the pen cap assembly (3) to the front end of the middle bracket (2).

5. The multifunctional smart pen according to claim 1, characterized in that: The front of the rear button panel (7) is provided with a Type-C charging port (15), a first micro switch (16), a second micro switch (17) and a third micro switch (18); the back of the rear button panel (7) is provided with a main control chip (19).

6. The multifunctional smart pen according to claim 5, characterized in that: The first micro switch (16) and the second micro switch (17) correspond to the two button openings (11) on the plane area of ​​the pen tube (1), respectively; a button elastic cap (20) is provided in the button opening (11), and the button elastic cap (20) is in the shape of a vertical long strip racetrack.

7. The multifunctional smart pen according to claim 5, characterized in that: The pen tube end cap (4) is also provided with a tail button (21) and a tail button spring (22); the pressing end of the tail button (21) faces the end face of the pen tube end cap (4), the tail button spring (22) is sleeved on the rear end of the tail button (21), and the other end of the tail button (21) corresponds to the third micro switch (18).

8. The multifunctional smart pen according to claim 1, characterized in that: The soft-pack lithium battery (6) is a cylindrical soft-pack lithium battery. The positive and negative electrodes of the soft-pack lithium battery (6) are respectively soldered to the power pads of the rear button board (7) through two wires.

9. The multifunctional smart pen according to claim 1, characterized in that: The middle bracket (2) is provided with slots and grooves for fixing the pen tip plate (5), the soft-pack lithium battery (6) and the rear button plate (7); the front end of the middle bracket (2) is provided with a bracket front cover plate (23), and the bracket front cover plate (23) and the middle bracket (2) are assembled to form the encapsulation cavity of the pen tip plate (5).

10. The multifunctional smart pen according to claim 1, characterized in that: The rear button panel (7) is also provided with a MEMS microphone (24); the pen tube (1) is provided with a microphone receiving hole (25) on its flat area, and the position of the microphone receiving hole (25) corresponds to that of the MEMS microphone (24).

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