Touch pen

Abstract

The invention discloses a touch pen, and relates to the technical field of electronic equipment, and the touch pen comprises a pen tube, a touch pen body, a pen point assembly and a pen cap assembly; the pen tube is provided with an accommodating cavity, and a first opening and a second opening which are communicated with the accommodating cavity; the stylus body is arranged in the accommodating cavity and comprises a main control module; one end of the pen point assembly extends into the containing cavity through the first opening and is detachably and electrically connected with the touch pen body, and the other end of the pen point assembly extends out of the pen tube. The pen cap assembly is detachably assembled to the end, close to the second opening, of the stylus body, and the pen cap assembly is electrically connected with the main control module; the pen cap assembly can be replaced with different functional modules, functional expansion of the touch pen is achieved, and individual requirements of users are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic equipment, in particular to a touch pen. BACKGROUND

[0002] At present, the tail of most touch pens on the market does not integrate any functional module, and its main function is only to close and fix the support inside the pen tube. In order to ensure the overall stability, the tail and the pen tube are usually bonded by gluing, so that they become an integrated component that cannot be disassembled. This fixed design makes it impossible to reserve an interface or space on the tail to carry a color picker, eraser and other replaceable or customized functional modules, which severely limits the functional expansion of the product and the individual needs of users. SUMMARY

[0003] The main purpose of the present application is to provide a touch pen, which aims to replace the cap assembly with different functional modules, realize the functional expansion of the touch pen and meet the individual needs of users.

[0004] To achieve the above purpose, the touch pen provided by the present application comprises: a pen tube having a containing cavity, a first opening and a second opening communicating with the containing cavity; a touch pen body arranged in the containing cavity, wherein the touch pen body comprises a main control module; a pen tip assembly, one end of the pen tip assembly extending into the containing cavity through the first opening and being detachably connected and electrically connected with the touch pen body, and the other end of the pen tip assembly extending out of the pen tube; a cap assembly, the cap assembly being detachably assembled to one end of the touch pen body close to the second opening, and the cap assembly being electrically connected with the main control module.

[0005] In an embodiment, the cap assembly comprises a cap support and a functional module arranged on the cap support, the cap support being detachably connected to one end of the touch pen body away from the pen tip assembly, and the functional module being detachably electrically connected with the main control module.

[0006] In an embodiment, the touch pen body further comprises a mounting support, the main control module being arranged in the mounting support, the mounting support being provided with a mounting groove, the cap support comprising a first end and a second end arranged oppositely, the first end being clamped in the mounting groove, the second end extending out of the pen tube through the second opening, and the functional module being connected to the end portion of the second end.

[0007] In an embodiment, one of the cap holder and the function module is provided with a positioning block, and the other of the cap holder and the function module is provided with a positioning slot, the positioning slot being matched with the positioning block to fix the function module to the cap holder.

[0008] In an embodiment, a protrusion is arranged in the mounting slot, and a connecting portion is formed at the first end of the cap holder and extends towards the master control module, the connecting portion being provided with a limiting slot matched with the protrusion.

[0009] In an embodiment, the master control module comprises a master control board, the master control board extending along the axial direction of the pen tube, and the master control board being provided with an electrical connecting portion at one end close to the cap holder, the stylus comprising a flexible circuit board, one end of the flexible circuit board being fixed to the master control board through the electrical connecting portion, and the other end of the flexible circuit board extending along the axial direction of the pen tube and being electrically connected with the function module.

[0010] In an embodiment, the mounting bracket is further provided with a limiting slot, and the flexible circuit board is arranged in the limiting slot.

[0011] In an embodiment, the stylus body further comprises a measurement module electrically connected with the master control board, and the tip assembly comprises a mounting cylinder and a refill, the mounting cylinder being clamped in the first opening and being detachably connected with the outer peripheral wall of the measurement module, and one end of the refill being detachably connected with and electrically connected with the inner peripheral wall of the measurement module through the mounting cylinder.

[0012] In an embodiment, the function module comprises at least one of a color picker module and an eraser module.

[0013] In an embodiment, the stylus further comprises a cover plate detachably mounted in the second opening, and the cap assembly is arranged in the pen tube and abuts against the cover plate, and the cap assembly is elastically electrically connected with the master control module.

[0014] The technical scheme of the present application can realize the arrangement and centralized management of the stylus body by arranging the stylus body integrated with the master control module in the accommodating cavity of the pen tube, and provides the basis for signal processing and function control of the whole stylus. One end of the tip assembly extends into the accommodating cavity through the first opening of the pen tube, and the tip assembly is detachably mechanically and electrically connected with the stylus body, so that the tip assembly can be in conduction with the stylus body while being installed, and the other end of the tip assembly extends out of the pen tube for normal writing or touch control operation, which facilitates the user to quickly and independently replace the tip assembly when the tip assembly is worn out or needs to be replaced, and improves the use convenience. At the same time, the cap assembly is detachably assembled to the end of the stylus body away from the tip assembly, and at least part of the cap assembly extends out of the pen tube through the second opening, and the cap assembly is electrically connected with the master control module.

[0015] When the user needs to replace the cap assembly, the pen tip assembly can be first detached from the stylus body, then the entire stylus body is pulled out along the accommodating cavity, so that the cap assembly is separated from the pen tube together with the stylus body, the separation of the cap assembly and the stylus body is realized, and finally a new cap assembly is installed to complete the replacement. The cooperation between the above-mentioned components not only breaks the limitation that the tail of the traditional stylus cannot be detached due to the gluing fixation, but also realizes the free replacement of the functional modules, which not only expands the application scenarios of the stylus, but also meets the needs of the user for multi-function, individualization and maintainability, and solves the technical problem that the tail of the existing technology cannot integrate and replace the functional modules. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the structures shown in the drawings.

[0017] Figure 1 The structural schematic diagram of an embodiment of the stylus provided by the present application is shown in the figure. Figure 2 The exploded view of the stylus is shown in the figure. Figure 1 Figure 3 The structural schematic diagram of an embodiment of the cap assembly is shown in the figure. Figure 4 The exploded view of the cap assembly is shown in the figure. Figure 3 Figure 5 The structural schematic diagram of another angle is shown in the figure. Figure 4 Figure 6 The structural schematic diagram of another embodiment of the cap assembly is shown in the figure. Figure 7 The structural schematic diagram of another angle is shown in the figure. Figure 6 Figure 8 The exploded view of the cap assembly is shown in the figure. Figure 6 Figure 9 The structural schematic diagram of another angle is shown in the figure. Figure 8 The exploded view of the stylus body is shown in the figure. Figure 10 The structural schematic diagram of the assembly of the mounting bracket and the cap assembly is shown in the figure. Figure 11 The structural schematic diagram of the assembly of the mounting bracket and the flexible circuit board is shown in the figure. Figure 12 Figure 13 The structural schematic diagram of the assembly of the mounting bracket and the flexible circuit board is shown in the figure.​​​​​​Figure 1 a front sectional view of the embodiment of the application; Figure 14 is Figure 13 a partial enlarged view at B in FIG. Figure 15 is Figure 13 a partial enlarged view at C in FIG. Figure 16 is Figure 13 a partial enlarged view at D in FIG. Figure 17 is Figure 2 a partial enlarged view at A in FIG. Figure 18 is a structural schematic view of another embodiment of the stylus.

[0018] Explanation of reference numerals: 100, stylus; 1, pen tube; 101, accommodating cavity; 102, first opening; 103, second opening; 2, stylus body; 201, mounting groove; 202, limiting groove; 21, main control module; 22, mounting bracket; 23, main control board; 24, electrical connection part; 25, power module; 26, measurement module; 261, first metal piece; 262, second metal piece; 263, first thread; 264, second thread; 27, convex part; 3, pen tip assembly; 31, pen core; 311, first threaded section; 32, mounting cylinder; 321, second threaded section; 4, cap assembly; 401, accommodating space; 402, positioning groove; 41, cap bracket; 411, connecting part; 412, first end; 413, second end; 42, function module; 43, positioning block; 5, flexible circuit board; 6, cover plate.

[0019] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0022] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0023] At present, the tail of most touch pens on the market does not integrate any functional module, and its main function is only to close and fix the support inside the pen tube. In order to ensure the overall stability, the tail and the pen tube are usually bonded by gluing, so that they become an integrated component that cannot be disassembled. This fixed design makes the tail unable to reserve an interface or space to carry color picker, eraser and other replaceable or customized functional modules, which seriously limits the functional expansion of the product and the individual needs of users.

[0024] Therefore, the present application proposes a touch pen 100, which aims to replace the cap assembly 4 with different functional modules 42, realizes the functional expansion of the touch pen 100 and meets the individual needs of users.

[0025] As shown in Figures 1 to 9 In an embodiment, the touch pen 100 includes: The pen tube 1 has a receiving cavity 101, a first opening 102 and a second opening 103 communicating with the receiving cavity 101; The touch pen body 2 is arranged in the receiving cavity 101, and the touch pen body 2 includes a main control module 21; The tip assembly 3 has one end extending into the receiving cavity 101 through the first opening 102 and being detachably connected and electrically connected with the touch pen body 2, and the other end extending out of the pen tube 1; The cap assembly 4 is detachably assembled to the end of the touch pen body 2 close to the second opening 103, and the cap assembly 4 is electrically connected with the main control module 21.

[0026] In the embodiment, as shown in Figure 2As shown, the pen tube 1 is provided as an external bearing structure, and a containing cavity 101 is arranged inside the pen tube 1 for accommodating components such as the stylus body 2. A first opening 102 is arranged at an end of the pen tube 1 and communicates with the containing cavity 101, and a tip end of the stylus tip assembly 3 is exposed through the first opening 102. The first opening 102 can provide a channel for installation and disassembly of the stylus tip assembly 3, facilitating subsequent maintenance and replacement operations. The pen tube 1 is further provided with a second opening 103 that communicates with the containing cavity 101. The first opening 102 and the second opening 103 are oppositely arranged at two ends of the pen tube 1. The second opening 103 is located at an end of the pen tube 1 that is away from the stylus tip assembly 3, and provides a channel for internal connection and external extension of the cap assembly 4, so that the cap assembly 4 can penetrate the pen tube 1 to realize the modular design of internal and external linkage. The pen tube 1 can be made of metal or high-strength plastic, etc., and has the advantages of structural strength, durability and appearance texture, ensuring that the overall structure is stable and has good user experience.

[0027] As shown in Figure 2 The stylus body 2 is arranged in the containing cavity 101 of the pen tube 1, and the stylus body 2 can be integrated with a measurement module 26, a power module 25 and a main control module 21. However, this does not mean that the stylus body 2 is limited to the above-mentioned modules. In this embodiment, the stylus body 2 includes the measurement module 26, the power module 25 and the main control module 21. The measurement module 26 is a strain gauge module, which can be implemented by a metal foil type or a semiconductor piezoresistive strain gauge. The measurement module 26 is mechanically and electrically connected to the stylus tip assembly 3, and when the stylus tip assembly 3 is deformed under force, the measurement module 26 synchronously generates a micro-strain, causing a change in resistance value, thereby converting a pressure signal into an electrical signal, and real-time detecting the pressure during writing or drawing, and transmitting the pressure to the main control module 21, to realize a pressure sensing output function and improve the naturalness and responsiveness of writing. The power module 25 can be a lithium-ion button cell, a polymer micro battery or a magnetic charging battery, etc., and provides power support for the main control module 21, the measurement module 26 and other modules. The main control module 21 can be implemented by a microprocessor, a main control chip or a microcontroller, and is used to control the measurement module 26 and the power module 25 to work, and to execute a communication protocol with a terminal, to realize centralized control and efficient management of the overall running state of the stylus 100. By integrating the measurement module 26, the power module 25 and the main control module 21 into the stylus body 2, the installation and disassembly maintenance convenience of the stylus 100 can be improved.

[0028] As shown in Figure 2 One end of the stylus tip assembly 3 extends into the containing cavity 101 through the first opening 102, and can be detachably mechanically connected to the stylus body 2 through a buckle, a thread or a magnetic attraction structure, and can be detachably electrically connected through a conductive spring, a contact or a plug-in terminal, to ensure that the stylus tip assembly 3 can transmit a pressure or a capacitance signal to the main control module 21 during writing, and to support users to quickly replace different hardness or types of pen cores 31, thereby improving the use flexibility and maintenance efficiency of the stylus 100.

[0029] As Figure 2 shown, the cap assembly 4 is detachably assembled to the stylus body 3 away from the nib assembly 3, forming a tail functional expansion interface. At least part of the cap assembly 4 extends out of the pen tube 1 through the second opening 103. That is, the cap assembly 4 can extend out of the pen tube 1 in part or in whole, so as to form an exposed operating end of the stylus 100, facilitating the user to hold or use the functional module 42 on the cap assembly 4. The cap assembly 4 and the main control module 21 can be electrically connected through a flexible circuit board, a spring needle or a conductive contact, which is not limited in detail. By providing the cap assembly 4, the traditional closed tail can be converted into an expandable multifunctional platform, supporting the free replacement of custom functional modules 42 such as color picker, eraser, spare refill cartridge, etc., breaking the limitation of the traditional stylus that cannot be disassembled due to the fixed glue.

[0030] In an embodiment, as Figures 3 to 9 shown, the cap assembly 4 can include a cap support 41 and a functional module 42 provided on the cap support 41. The cap support 41 can be detachably connected to the stylus body 2 away from the nib assembly 3 in a clamping, threaded screwing or magnetic attraction manner, so that the entire tail assembly 4 can be freely disassembled. The functional module 42 can be a color picker module or an eraser module or a health monitoring module, etc. As Figures 3 to 5 shown, the functional module 42 in the figure is an eraser module. As Figures 6 to 9 shown, the functional module 42 in the figure is a color picker module. Regardless of which functional module 42, it can be detachably connected to the cap support 41 through a sliding groove, a buckle or a quick release interface, and establish detachable electrical connection with the main control module 21 through a flexible circuit board 5, a conductive contact or a micro connector, so that the module replacement can be completed without damaging the overall structure when the function is replaced. In actual application, the functional module 42 is detachably connected to the cap support 41 and can be detachably electrically connected to the main control module 21. When the user needs to replace the functional module 42, the nib assembly 3 can be first detached from the stylus body 2, then the entire stylus body 2 is pulled out along the accommodating cavity 101, so that the cap assembly 4 is separated from the pen tube 1 together, then the cap support 41 is detached from the stylus body 2, realizing the separation of the cap assembly 4 and the stylus body 2, and finally the cap support 41 of the new cap assembly 4 is installed on the stylus body 2, completing the replacement of the functional module 42.

[0031] In the present application, through the cooperation between the above-mentioned components, not only the limitation that the tail of the traditional stylus 100 cannot be disassembled due to the fixed glue can be broken, but also the free replacement of the functional module 42 can be realized, which not only expands the application scenarios of the stylus 100, but also meets the needs of users for multifunction, personalization and maintainability, solving the technical problem that the tail cannot integrate and replace the functional module 42 in the prior art.

[0032] As shown in Figure 10 and Figure 11 In an embodiment, the stylus body 2 further comprises a mounting bracket 22, and the main control module 21 is arranged on the mounting bracket 22. The mounting bracket 22 is provided with a mounting groove 201. The cap bracket 41 comprises a first end 412 and a second end 413 arranged oppositely. The end of the cap bracket 41 away from the function module 42 is configured as the first end 412, and the end close to the function module 41 is configured as the second end 413. The first end 412 of the cap bracket 41 is clamped in the mounting groove 201, and the second end 413 of the cap bracket 41 extends out of the pen tube 1 through the second opening 103. The function module 42 is detachably connected to the end of the second end 413.

[0033] In the embodiment, as shown in Figure 10 The mounting bracket 22 serves as a support structure of the stylus body 2 and is arranged along the central axis direction of the pen tube 1 into the accommodating cavity 101 for fixing and carrying the main control module 21. The mounting bracket 22 is provided with the mounting groove 201, which is a recess structure for accommodating and limiting one end of the cap bracket 41. The mounting bracket 22 and the cap bracket 41 are detachably connected through interference fit, which can not only ensure the reliability of mechanical connection, but also facilitate subsequent disassembly and maintenance.

[0034] As shown in Figure 11As shown, the first end 412 of the cap holder 41 is clamped in the mounting groove 201, and the mounting groove 201 is provided with a protrusion 27. The outer wall of the protrusion 27 and the groove wall of the mounting groove 201 jointly form an annular clamping space. The first end 412 of the cap holder 41 extends towards the main control module to form a connecting portion 411. The connecting portion 411 has a limiting groove matched with the protrusion 27. The shape of the limiting groove is matched with the shape of the protrusion 27, so that the connecting portion 411 can be tightly attached to the outer wall of the protrusion 27. During assembly, the connecting portion 411 is aligned and clamped into the annular clamping space. The limiting groove of the connecting portion 411 slides along the outer wall of the protrusion 27 and is finally hung below the protrusion 27, realizing buckle type locking. Through this structure, a stable detachable mechanical connection is formed between the cap holder 41 and the mounting bracket 22. The cooperation of the protrusion 27 and the connecting portion 411 not only limits and prevents the cap holder 41 from loosening or falling off due to vibration or external force pulling in the axial direction, but also has a certain guiding effect through the cooperation of the limiting groove of the connecting portion 411 and the curved surface of the outer wall of the protrusion 27, facilitating assembly and reducing stress concentration. In addition, after the cap holder 41 is hung and fixed, its axial movement is restricted by the protrusion 27, and its radial movement is restricted by the mounting groove 201, so that effective limiting is realized in the axial and radial directions, and the cap holder 41 is firmly fixed in the mounting groove 201, improving the installation stability of the cap holder 41. The second end 413 of the cap holder 41 extends out of the pen tube 1 through the second opening 103, forming an exposed functional interface end, so that the cap holder 41 has the dual functions of internal fixation and external expansion, improving the structural integration and connection rigidity.

[0035] It can be understood that the detachable connection mode of the end of the cap holder 41 extending out of the pen tube 1 is different for different functional modules 42.

[0036] As shown in the drawings, Figure 3 When the functional module 42 is an eraser module, the user can perform erasing operation by pressing the eraser module. In an embodiment, when the functional module 42 is an eraser module, a soft replaceable erasing head such as conductive rubber or nanometer material can be installed at the end of the functional module 42, and the erasing head communicates with the main control module 21 through electrical connection. When the user uses the pen tail to perform erasing operation by turning over the stylus 100, the main control module 21 can identify the contact state and pressure change of the eraser module, simulate the erasing force and range of a real eraser, and realize natural digital erasing effect.

[0037] In an embodiment, one of the cap holder 41 and the functional module 42 can be provided with a positioning block 43, and the other one of the cap holder 41 and the functional module 42 can be provided with a positioning groove 402.

[0038] In this embodiment, as shown in the drawings, Figure 4 and Figure 5As shown, the first end 412 of the cap holder 41 away from the function module 42 is configured, and the end close to the function module 41 is configured as the second end 413. The end of the cap holder 41 extending out of the pen tube 1 (i.e. the second end 413 of the cap holder 41) is provided with a positioning groove 402, and the function module 42 is correspondingly provided with a positioning block 43. The positioning groove 402 and the positioning block 43 are matched with each other during assembly, so as to accurately and stably fix the function module 42 on the cap holder 41. The positioning block 43 can be a protruding structure extending outward from the end face of the function module 42, and the shape thereof can be rectangular, circular or polygonal. The positioning groove 402 is a matching groove provided at the end of the second end of the cap holder 41, and the two are matched by interference to realize quick alignment and locking. Through the cooperation of the positioning block 43 and the positioning groove 402, not only can the relative rotation or axial slippage of the function module 42 after installation be prevented, the reliability and structural stability of the connection are improved, but also a clear guiding and positioning effect can be provided during assembly, so as to ensure that the electrical connection contacts of the function module 42 and the main control module 21 are accurately connected, and contact failure or damage caused by misalignment is avoided.

[0039] As shown, Figures 6 to 9 When the function module 42 is a color picker module, a micro spectrum sensor or an RGB color recognition sensor can be integrated therein, and the color picker module communicates with the main control module 21 through electrical connection. When the user is drawing or designing, the color picker module can be close to the surface of the real object for scanning, the main control module 21 quickly acquires color information, and transmits the scanned color signal to the connected terminal through the wireless communication module, so as to realize efficient color picking operation of seeing and taking.

[0040] In order to realize the disassembly of the color picker module, in an embodiment, one of the cap holder 41 and the function module 42 can be provided with the positioning block 43, and one of the cap holder 41 and the function module 42 can be provided with the positioning groove 402. In this embodiment, as shown in Figure 8 and Figure 9 As shown, the first end 412 of the cap holder 41 away from the function module 42 is configured, and the end close to the function module 41 is configured as the second end 413. The end of the cap holder 41 extending out of the pen tube 1 (i.e. the second end 413 of the cap holder 41) is provided with a positioning groove 402, and the function module 42 is correspondingly provided with a positioning block 43. The positioning groove 402 and the positioning block 43 are matched with each other during assembly, so as to accurately and stably fix the function module 42 on the cap holder 41. The positioning block 43 can be a protruding structure extending outward from the end face of the function module 42, and the shape thereof can be rectangular, circular or polygonal. The positioning groove 402 is a matching groove provided at the end of the second end of the cap holder 41, and the two are matched by interference to realize quick alignment and locking. Through the cooperation of the positioning block 43 and the positioning groove 402, not only can the relative rotation or axial slippage of the function module 42 after installation be prevented, the reliability and structural stability of the connection are improved, but also a clear guiding and positioning effect can be provided during assembly, so as to ensure that the electrical connection contacts of the function module 42 and the main control module 21 are accurately connected, and contact failure or damage caused by misalignment is avoided.

[0041] Since the detachable connection is adopted between the functional module 42 and the cap holder 41, the user can flexibly replace the color picker module or the eraser module according to the actual use requirement. The modular structure not only supports the operation mode of writing with the pen tip and picking up color with the tail, but also can realize the double-end switching for writing or erasing, so as to complete the free switching of multiple functions on the same stylus 100, greatly improving the convenience and diversity of use.

[0042] As shown in Figure 10 , Figures 13 to 15 , in an embodiment, the master control module 21 further includes a master control board 23, the master control board 23 is arranged along the axial direction of the pen tube 1, and the master control board 23 is provided with an electrical connection part 24 at one end close to the cap holder 41. The stylus 100 further includes a flexible circuit board 5, one end of the flexible circuit board 5 is fixed to the master control board 23 through the electrical connection part 24, and the other end of the flexible circuit board 5 extends along the axial direction of the pen tube 1 and is electrically connected with the functional module 42.

[0043] In the embodiment, as shown in Figure 10 , the master control board 23 is arranged along the axial direction of the pen tube 1 to adapt to the narrow space structure inside the pen tube 1, improve the space utilization and enhance the structural stability. The master control board 23 is provided with an electrical connection part 24 at one end close to the cap holder 41. The electrical connection part 24 can adopt a form of elastic sheet interface, plug-in terminal or magnetic attraction contact point, and forms a detachable electrical connection with the master control board 23 itself, facilitating the separate replacement and maintenance of the master control board 23 or the electrical connection part 24. As shown in Figure 14 and Figure 15 , the stylus 100 further includes a flexible circuit board 5, one end of the flexible circuit board 5 is detachably fixed to the master control board 23 through the electrical connection part 24, and the other end of the flexible circuit board 5 extends along the axial direction of the pen tube 1 and enters the accommodation space 401 of the cap holder 41, and realizes electrical connection with the corresponding contact or interface on the functional module 42.

[0044] In actual application, when the user needs to replace the functional module 42, the pen tip assembly 3 can be first detached from the stylus body 2, then the entire stylus body 2 is pulled out along the accommodation cavity 101, so that the cap assembly 4 is separated from the pen tube 1 together, then the cap holder 41 is detached from the stylus body 2, realizing the mechanical separation between the cap holder 41 and the stylus body 2, at the same time, the electrical connection part 24 is disconnected from the master control board 23, so that the flexible circuit board 5 is electrically separated from the master control board 23, and then the entire cap assembly 4 can be taken off from the master control board 23. The replacement of the functional module 42 can be realized. It can be seen that the structure can realize the complete detachable path from the mechanical connection to the electrical connection of the functional module 42, the entire process does not need tools and does not damage the internal circuit, the operation is simple, and the maintainability and the user's self-replacement ability of the stylus 100 are improved.

[0045] In addition, by arranging the flexible circuit board 5, the electrical connection between the functional module 42 and the main control module 21 can be simplified. Compared with the traditional wire connection mode, the flexible circuit board 5 can be bent and arranged according to the space inside the pen tube 1, avoiding the problem of entanglement and disorder of multiple wires, reducing the internal space occupation, and improving the assembly efficiency and structural neatness.

[0046] As shown in Figure 10 and Figure 12 In an embodiment, the mounting bracket 22 is further provided with a limiting groove 202, and the flexible circuit board 5 is arranged in the limiting groove 202. In this embodiment, part of the flexible circuit board 5 is arranged in the limiting groove 202. The limiting groove 202 is a groove structure formed in the side wall of the mounting bracket 22, which is consistent with the axial direction of the pen tube 1, and is used for positioning and restraining the flexible circuit board 5. By embedding the flexible circuit board 5 in the limiting groove 202, not only can the flexible circuit board 5 be fixed in order and prevented from shaking or entangling in the accommodating cavity 101, but also the flexible circuit board 5 can bear the function of auxiliary limiting in structure. That is, when the cap holder 41 is connected with the mounting bracket 22, the flexible circuit board 5 is connected with the main control board 23 and the functional module 42 at both ends respectively, and is tensioned or fixed in the limiting groove 202. At this time, the cooperation of the flexible circuit board 5 and the limiting groove 202 can effectively limit the movement of the cap assembly 4 along the axial direction of the pen tube 1, prevent it from loosening or falling out due to vibration or external force in the use process, and thus improve the stability and reliability of the overall connection of the cap assembly 4. In addition, the restraining effect of the limiting groove 202 on the flexible circuit board 5 also helps to maintain the regularity of the internal wiring, avoid the flexible circuit board 5 from being bent and fatigued or damaged in the repeated disassembly and assembly process, and prolong the service life of the electrical connection.

[0047] As shown in Figure 15 and Figure 16 In an embodiment, the stylus body 2 further comprises a measurement module 26, the measurement module 26 is electrically connected with the main control module 21, the stylus tip assembly 3 comprises a mounting cylinder 32 and a refill 31, the mounting cylinder 32 is clamped in the first opening 102 and detachably connected with the outer peripheral wall of the measurement module 26, and one end of the refill 31 is detachably connected with the inner peripheral wall of the measurement module 26 and electrically connected.

[0048] In this embodiment, the measurement module 26 is used to collect physical signals such as pressure, displacement or contact force during the touch process, realize the perception of the writing or drawing force, and thus improve the sensitivity, response accuracy and real writing feeling of the stylus 100 in the application scenarios of drawing and writing. The measurement module 26 can be realized by using a piezoresistive, piezoelectric or capacitive sensor, integrated in the stylus body 2, and electrically connected with the main control module 21 through a conductive circuit, to ensure that the collected signals can be transmitted to the main control module 21 in real time for processing.

[0049] The pen tip assembly 3 comprises a mounting cylinder 32 and a refill 31, wherein the mounting cylinder 32 is detachably fixed to the first opening 102 by a clamping or interference fit, and the outer peripheral wall of the mounting cylinder 32 forms a detachable mechanical connection with the outer peripheral wall of the measuring module 26, facilitating the user to disassemble and assemble the pen tip assembly 3 as a whole when replacing the refill 31 or performing maintenance. One end of the refill 31 penetrates the mounting cylinder 32 and extends into the accommodating cavity 101, and forms a detachable connection and electrical connection with the inner peripheral wall of the measuring module 26, ensuring that the deformation or displacement of the refill 31 under pressure can be accurately sensed by the measuring module 26, while realizing the conduction of electrical signals.

[0050] As shown in Figure 16 and Figure 17 , the measuring module 26 comprises a first metal piece 261 and a second metal piece 262 sleeved on the outer periphery of the first metal piece 261, both coaxially arranged and flush with the end face of the one end close to the pen tip assembly 3, which is conducive to uniform force transmission. The inner diameters of the first metal piece 261 and the second metal piece 262 gradually decrease from the one end close to the pen cap assembly 4 to the pen tip direction, forming a tapered structure, which helps to improve the structural strength and stress concentration response sensitivity. The inner peripheral wall of the first metal piece 261 is provided with a first thread 263, and the inner peripheral wall of the second metal piece 262 is provided with a second thread 264. Correspondingly, the one end of the refill 31 extending into the pen tube 1 is provided with a first thread 263 section matching the first thread 263, and the outer peripheral wall of the mounting cylinder 32 is provided with a second thread 264 section matching the second thread 264. During assembly, the second thread 264 section of the mounting cylinder 32 is screwed with the second thread 264 of the second metal piece 262 to fix the mounting cylinder 32 at the first opening 102; at the same time, the first thread 263 section of the refill 31 is screwed with the first thread 263 of the first metal piece 261 to fix the refill 31 inside the measuring module 26. In this way, the entire pen tip assembly 3 is connected with the inner and outer peripheral walls of the measuring module 26 through double thread structures, respectively, forming a reliable mechanical and electrical integrated connection.

[0051] As shown in Figure 18 , in an embodiment, the stylus 100 further comprises a cover plate 6 detachably mounted at the second opening 103, and the pen cap assembly 4 is arranged in the pen tube 1 and abuts against the cover plate 6, and the pen cap assembly 4 is elastically and electrically connected with the main control module 21.

[0052] In this embodiment, the second opening 103 is arranged at the end of the pen tube 1 away from the nib assembly 3, for accommodating and communicating with the mounting and dismounting path of the cap assembly 4, and the cover plate 6 is detachably sealed to the second opening 103 by buckling, magnetic attraction or screw thread and the like. When the user needs to replace the cap assembly 4, the entire pen tube 1 or the stylus body 2 does not need to be disassembled, and only the cover plate 6 needs to be removed, so that the cap holder 41 or the functional module 42 can be directly removed through the second opening 103, and the cap holder 41 together with the functional module 42 can be pushed out from the pen tube 1 along the axial direction by fingers or auxiliary tools, so that quick dismounting is realized. When installing a new functional module 42, the new cap assembly 4 is pushed into the second opening 103, so that the cap holder 41 is docked and locked with the stylus body 2, and at the same time, the functional module 42 is electrically connected with the main control module 21 through the elastic electrical connection structure, and then the cover plate 6 is reinstalled to complete the replacement. This operation mode can simplify the dismounting process, avoid the cumbersome steps of dismounting the nib assembly 3 and pulling out the stylus body 2 in the above embodiment, and improve the convenience and efficiency of the user in replacing the functional module 42.

[0053] In another aspect, a clamping groove (not shown in the figure) is arranged at one side of the second opening 103 of the pen tube 1, and the cover plate 6 is assembled to the clamping groove by clamping. The opening width of the clamping groove is slightly larger than the width of the cap assembly 4. When the user needs to replace the cap assembly 4, the cover plate 6 is removed, and the cap assembly 4 is pushed towards the side of the second opening 103 to make it disengage from the pen tube 1. The reverse operation can install a new cap assembly 4. This scheme does not need to dismount the entire stylus 100, and the operation is more convenient. In terms of electrical connection, the cap assembly 4 and the main control module 21 adopt elastic electrical connection, preferably realized by spring probes. The spring probe is a pogo pin, which has good conductivity, resilience and wear resistance. When the cap holder 41 is pushed into place, the spring probe and the contact are in close contact through the spring force, ensuring stable and reliable signal transmission. When dismounting, the spring probe automatically retracts, facilitating damage-free separation.

[0054] In order to facilitate understanding of the above content, the dismounting process of the cap assembly 4 is described below.

[0055] When the user assembles the stylus 100, first, the main control module 21, the main control board 23, the measurement module 26 and other core electronic components are integrated on the mounting bracket 22 to form the stylus body 2 with signal processing and measurement functions, providing a basis for subsequent function expansion. Then, the cap assembly 4 is clamped into the mounting groove 201 of the mounting bracket 22 to achieve stable mechanical connection, and at the same time, the cap assembly 4 and the main control board 23 are electrically connected through the flexible circuit board 5 to ensure that the signal path between the functional module 42 in the cap assembly 4 and the main control module 21 is unobstructed, forming a semi-finished product with complete functions. Next, the semi-finished product is integrally inserted into the accommodating cavity 101 of the pen tube 1 along the axial direction, so that the structure is accurately positioned and the appearance is smooth, and one end of the cap support 41 in the cap assembly 4 can be extended or prepared for packaging through the second opening 103 at the tail of the pen tube 1. Finally, the installation cylinder 32 is fixed at the first opening 102 at the front end of the pen tube 1, and the refill 31 is connected with the measurement module 26 through the installation cylinder 32 to achieve mechanical locking and electrical conduction, completing the assembly of the writing function. The entire assembly process is clear in hierarchy and convenient to operate, which can not only ensure the reliable connection between the components of the stylus 100, but also take into account the production efficiency and the convenience of later maintenance.

[0056] Conversely, when the user needs to replace the functional module 42, the nib assembly 3 can be first detached from the stylus body 2, and then the entire stylus body 2 is pulled out along the accommodating cavity 101, so that the cap assembly 4 is separated from the pen tube 1 together, and then the cap support 41 is detached from the stylus body 2 to separate the cap assembly 4 from the stylus body 2, so that the functional module 42 can be replaced.

[0057] In summary, through the cooperation between the above components, not only can the limitation that the tail of the traditional stylus 100 cannot be detached due to glue fixing be broken, but also the free replacement of the functional module 42 can be achieved, which not only expands the application scenarios of the stylus 100, but also meets the needs of users for multifunction, personalization and maintainability, and solves the technical problem of the existing technology that the tail cannot be integrated and the functional module 42 cannot be replaced.

[0058] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A stylus, characterized in that, include: The pen tube has a receiving cavity, a first opening communicating with the receiving cavity, and a second opening; A stylus body is disposed in the accommodating cavity, and the stylus body includes a main control module; A pen tip assembly, one end of which extends into the receiving cavity through the first opening and is detachably connected and electrically connected to the stylus body, and the other end of which extends out of the pen tube; A pen cap assembly is detachably mounted to one end of the stylus body near the second opening, and the pen cap assembly is electrically connected to the main control module.

2. The stylus as described in claim 1, characterized in that, The pen cap assembly includes a pen cap bracket and a functional module disposed on the pen cap bracket. The pen cap bracket is detachably connected to the end of the stylus body away from the pen tip assembly, and the functional module is detachably electrically connected to the main control module.

3. The stylus as described in claim 2, characterized in that, The stylus body also includes a mounting bracket, the main control module is disposed on the mounting bracket, the mounting bracket is provided with a mounting groove, the pen cap bracket includes a first end and a second end disposed opposite to each other, the first end is engaged in the mounting groove, the second end extends out of the pen tube through the second opening, and the functional module is connected to the end of the second end.

4. The stylus as described in claim 3, characterized in that, One of the pen cap bracket and the functional module is provided with a positioning block, and the other of the pen cap bracket and the functional module is provided with a positioning groove. The positioning groove cooperates with the positioning block to fix the functional module to the pen cap bracket.

5. The stylus as described in claim 3, characterized in that, The mounting groove has a protrusion, and the first end of the pen cap bracket extends toward the main control module to form a connecting part. The connecting part has a limiting groove that matches the protrusion.

6. The stylus as described in claim 2, characterized in that, The main control module includes a main control board that extends along the axial direction of the pen tube. An electrical connection portion is provided at one end of the main control board near the pen cap bracket. The stylus includes a flexible circuit board. One end of the flexible circuit board is fixed to the main control board through the electrical connection portion, and the other end of the flexible circuit board extends along the axial direction of the pen tube and is electrically connected to the functional module.

7. The stylus as described in claim 6, characterized in that, The mounting bracket is also provided with a limiting groove, and the flexible circuit board passes through the limiting groove.

8. The stylus as described in any one of claims 1-7, characterized in that, The stylus body also includes a measurement module, which is electrically connected to the main control board. The pen tip assembly includes a mounting cylinder and a pen tip. The mounting cylinder is engaged in the first opening and is detachably connected to the outer peripheral wall of the measurement module. One end of the pen tip passes through the mounting cylinder and is detachably connected to and electrically connected to the inner peripheral wall of the measurement module.

9. The stylus as described in claim 2, characterized in that, The functional module includes at least one of a color picker module and an eraser module.

10. The stylus as described in claim 1, characterized in that, The stylus also includes a cover plate, which is detachably installed in the second opening. The pen cap assembly is disposed inside the stylus tube and abuts against the cover plate. The pen cap assembly is flexibly electrically connected to the main control module.

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