Handwriting pen and electronic assembly
By using dual electric field link cooperative positioning technology, the problem of low positioning accuracy of the stylus is solved, achieving higher positioning accuracy and writing smoothness, and ensuring accurate positioning and stable trajectory of the stylus on the touch screen.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LONGCHEER ELECTRONICS HUIZHOU
- Filing Date
- 2026-04-02
- Publication Date
- 2026-06-26
AI Technical Summary
The low positioning accuracy of the stylus makes the writing trajectory prone to deviation and results in poor smoothness.
The dual electric field link cooperative positioning technology is adopted. The first electric field link is formed by the motherboard, the first conductive component, the conductive elastic component, the conductive bracket and the pen tip. The pen tip acts as a transmitter to emit the first electric field signal and the touch chip calculates the center position. The motherboard, the second conductive component and the electric field transmitter form the second electric field link, which calculates the tilt angle and corrects the landing point position.
It improves the positioning accuracy of the stylus on the touch screen, reduces writing trajectory deviation, and enhances writing smoothness and positional accuracy.
Smart Images
Figure CN122284846A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic device technology, and more particularly to a stylus and electronic components. Background Technology
[0002] As an important input tool for human-computer interaction, styluses are widely used in display terminals such as e-readers, tablets, and foldable devices. Their core function is to collect the user's writing force and convert it into precise pressure data, enabling real-time capture of information such as writing trajectory and stroke thickness, thereby meeting users' needs in scenarios such as digital note-taking, drawing and design, and electronic signatures.
[0003] When using a stylus, it needs to be positioned to determine its position relative to the touchscreen, thereby improving the accuracy and smoothness of writing. However, some styluses suffer from low positioning accuracy, causing the writing trajectory to easily deviate and resulting in poor smoothness. Summary of the Invention
[0004] In view of this, the main objective of the embodiments of this application is to provide a stylus and electronic components to solve the technical problem of low positioning accuracy of related styluses.
[0005] To achieve the above objectives, embodiments of this application provide a stylus, comprising:
[0006] The pen tube has a connected accommodating cavity and a telescopic opening;
[0007] The module front bracket is located within the accommodating cavity and forms a connected assembly cavity and assembly port;
[0008] The pen tip is conductive and passes through the telescopic opening;
[0009] A conductive support is inserted through the assembly opening and connected to the pen tip. The conductive support has a stop portion located inside the assembly cavity and spaced apart from the assembly opening along the axial direction of the pen tip.
[0010] The first conductive component is located inside the assembly cavity and is closer to the telescopic opening than the stop portion; the first conductive component is connected to the front bracket of the module.
[0011] A conductive elastic element is sleeved on the outside of the conductive bracket, and both ends of the conductive elastic element are respectively pressed and engaged with the first conductive element and the stop part.
[0012] An electric field emitter is located on the side of the front bracket of the module near the telescopic opening, and outside the pen tip;
[0013] The second conductive element is connected to the electric field emitter;
[0014] The motherboard is disposed within the accommodating cavity and is electrically connected to the first conductive element and the second conductive element respectively.
[0015] In some embodiments that may include the above embodiments, the outer side of the electric field emitter is provided with a notch, and the end of the notch opposite to the telescopic opening penetrates the electric field emitter.
[0016] The second conductive element is disposed at the notch.
[0017] In some embodiments that may include the above embodiments, the electric field emitter has a first channel and a second channel arranged along the axial direction of the pen tip, the second channel being farther away from the telescopic opening than the first channel, and the inner diameter of the second channel being larger than the inner diameter of the first channel;
[0018] The module front support includes a first tube and a second tube arranged along the axial direction of the pen tip. The first tube is closer to the telescopic opening than the second tube, and the outer diameter of the first tube is smaller than the outer diameter of the second tube. The first tube passes through the second channel.
[0019] In some embodiments that may include the above embodiments, the assembly cavity includes a first pipe section and a second pipe section, the first pipe section being closer to the telescopic opening than the second pipe section, and the inner diameter of the first pipe section being smaller than the inner diameter of the second pipe section;
[0020] The stop is located inside the second tube section and is spaced apart from the first tube section along the axial direction of the pen tip; along the radial direction of the pen tip, the distance between the end of the stop near the wall of the second tube section and the axis of the pen tip is greater than the distance between the wall of the first tube section and the axis of the pen tip.
[0021] In some embodiments that may include the above embodiments, the pen tip includes a flexible conductive portion and a rigid portion; the rigid portion is sleeved on a portion of the outer peripheral side of the flexible conductive portion.
[0022] When the writing tip of the pen extends beyond the telescopic opening, the rigid part is opposite to the wall of the telescopic opening, and part of the rigid part extends beyond the telescopic opening.
[0023] In some embodiments that may include the above embodiments, the stylus further includes:
[0024] The elastic telescopic component is installed inside the assembly cavity and located on the side of the conductive bracket away from the telescopic opening. The elastic telescopic component abuts against the conductive bracket.
[0025] The pressure detection device is located inside the accommodating cavity on the side of the elastic telescopic component away from the conductive support. The detection end of the pressure detection device abuts against the end of the elastic telescopic component away from the conductive support. The pressure detection device is electrically connected to the main board.
[0026] In some embodiments that may include the above embodiments, the elastic stretching component includes:
[0027] The telescopic shell abuts against the conductive bracket;
[0028] The limiting shell is coaxially nested with the telescopic shell and they slide together.
[0029] An insulating component is located at the end of the limiting shell away from the telescopic port, and the insulating component abuts against the pressure detection device.
[0030] The collapsible elastic element is disposed in a compressed state within the telescopic shell and the limiting shell, with its two ends abutting against the telescopic shell and the insulating element, respectively.
[0031] In some embodiments that may include the above embodiments, a boss is constructed at one end of the telescopic shell near the telescopic opening, and the side of the boss near the telescopic opening has an abutment surface, which is a plane.
[0032] The conductive bracket has a mating surface on the side away from the telescopic opening. The mating surface is curved and protrudes towards the abutting surface, and abuts against the abutting surface.
[0033] In some embodiments that may include the above embodiments, the mating surface is a sphere, and the center of the sphere is located on the side of the mating surface away from the contact surface.
[0034] This application also provides an electronic component, including: a touch device and a stylus of any of the foregoing embodiments;
[0035] Touch devices include touch screens and touch chips;
[0036] The touch screen includes the screen body and sensing electrodes, which are used to receive the electric field signal from the stylus.
[0037] The touch chip is electrically connected to the sensing electrode and is used to determine the position of the stylus on the screen body based on the electric field signal.
[0038] The stylus and electronic components provided in this application embodiment coordinate the positioning of the stylus through a dual electric field link. The motherboard, first conductive component, conductive elastic component, conductive support, and pen tip constitute the first electric field link. The pen tip acts as a transmitter, emitting a first electric field signal, which is radiated onto the touch screen of the touch device. The touch chip of the touch device can calculate the center position of the first electric field signal in real time, which is the center position of the writing end of the pen tip. The motherboard, second conductive component, and electric field transmitter constitute the second electric field link. The electric field transmitter emits a second electric field signal, which is radiated onto the touch screen. The touch chip can calculate the distance between the second electric field signal and the first electric field signal in real time. Based on the calculated distance, it calculates the tilt angle or degree of tilt of the stylus relative to the touch screen, and then corrects the landing position of the pen tip, further improving the accuracy of the position of the pen tip displayed on the touch screen, making it less likely for the stylus trajectory to deviate during writing. Attached Figure Description
[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0040] Figure 1 This is a schematic diagram of the structure of the stylus provided in the embodiments of this application;
[0041] Figure 2 for Figure 1 Sectional view along the middle AA direction;
[0042] Figure 3 This is a schematic diagram of the structure of the front support of the module in the stylus provided in the embodiments of this application;
[0043] Figure 4 for Figure 3 Sectional view along the BB direction;
[0044] Figure 5 for Figure 2 A magnified view of a portion of point P in the middle;
[0045] Figure 6 This is a partial structural diagram of the stylus provided in an embodiment of this application;
[0046] Figure 7 for Figure 6 A structural diagram from another perspective;
[0047] Figure 8 for Figure 7 A cross-sectional view along the CC direction;
[0048] Figure 9 A schematic diagram of the structure of the stylus when tilted relative to the touch screen, provided in an embodiment of this application;
[0049] Figure 10 This is a schematic diagram of the structure of the pen tip in a stylus provided in an embodiment of this application;
[0050] Figure 11 A schematic diagram of the exploded structure of the pen tip in a stylus provided in an embodiment of this application;
[0051] Figure 12 This is a schematic diagram of the structure of the telescopic shell in the stylus provided in the embodiments of this application;
[0052] Figure 13 This is a schematic diagram of the conductive support structure in the stylus provided in an embodiment of this application.
[0053] Explanation of reference numerals in the attached figures:
[0054] 10. Pen tube; 101. Receiving cavity; 102. Telescopic port;
[0055] 20. Module front bracket; 201. Assembly cavity; 202. Assembly port; 203. First pipe section; 204. Second pipe section; 205. First pipe segment; 206. Second pipe segment;
[0056] 30. Pen tip; 301. Flexible conductive part; 3011. Writing end; 302. Rigid part;
[0057] 40. Conductive support; 401. Stop; 402. Mating surface; 403. Insertion channel;
[0058] 50. First conductive component;
[0059] 60. Conductive elastic components;
[0060] 70. Electric field emitter; 701. First channel; 702. Second channel; 703. Notch;
[0061] 80. Second conductive component;
[0062] 90. Motherboard;
[0063] 100. Flexible telescopic components;
[0064] 110. Telescopic shell; 111. Boss; 112. Abutment surface;
[0065] 120. Limiting shell; 121. Through hole;
[0066] 130. Insulating component; 131. Force transmission part; 132. Limiting part;
[0067] 140. Collapsible elastic element;
[0068] 200. Pressure detection device;
[0069] 300. Touchscreen. Detailed Implementation
[0070] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0071] Secondly, it should be noted that in the description of the embodiments of this application, the terms "inner" and "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the described device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.
[0072] Furthermore, it should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0073] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0074] As stated in the background section, styluses in related technologies suffer from low positioning accuracy. The applicant's research revealed that this problem arises because styluses in these technologies output an alternating electric field through a built-in transmitting electrode at the pen tip. This alternating electric field is coupled to the sensing electrode array of the touchscreen. The touch chip in the touch device calculates the position of the writing tip and the landing point based on the electric field strength. However, the landing point of the stylus on the touchscreen is only an approximate position of the writing tip. When the tilt angle of the stylus changes, it becomes difficult to determine the precise landing point, resulting in low positioning accuracy.
[0075] To address the aforementioned technical problems, this application provides a stylus and electronic components. The stylus is positioned collaboratively via a dual electric field link. A motherboard, a first conductive component, a conductive elastic component, a conductive support, and a pen tip constitute the first electric field link. The pen tip acts as a transmitter, emitting a first electric field signal that radiates onto the touchscreen of a touch device. The touch chip of the touch device can calculate the center position of the first electric field signal in real time, which is also the center position of the writing end of the pen tip. A motherboard, a second conductive component, and an electric field transmitter constitute the second electric field link. The electric field transmitter emits a second electric field signal that radiates onto the touchscreen. The touch chip can calculate the distance between the second and first electric field signals in real time. Based on the calculated distance, it calculates the tilt angle or degree of tilt of the stylus relative to the touchscreen and then corrects the landing position of the pen tip, further improving the accuracy of the pen tip's position displayed on the touchscreen and making it less prone to deviation in the writing trajectory.
[0076] The principles and features of the embodiments of this application are described below with reference to the accompanying drawings. The examples given are only used to explain the embodiments of this application and are not intended to limit the scope of the embodiments of this application.
[0077] refer to Figure 1 and Figure 2 This application provides a stylus, including a pen tube 10, a module front bracket 20, a pen tip 30, a conductive bracket 40, a first conductive element 50, a conductive elastic element 60, and a main board 90.
[0078] refer to Figure 2 The pen tube 10 has a connected receiving cavity 101 and a telescopic opening 102. The telescopic opening 102 is located at the front end of the pen tube 10.
[0079] It should be noted that, in the description of the embodiments of this application, "front end" refers to the end of the stylus used to be close to the touch screen 300 when writing. "Rear end" is opposite to "front end" along the axis of the stylus; that is, "rear end" is the end of the stylus used to be away from the touch screen 300 when writing. Figure 2 The positive direction of the axis X along the pen tip 30 is "front", and the negative direction of the axis X along the pen tip 30 is "back".
[0080] The pen tip 30 is inserted through the telescopic port 102. The pen tip 30 can extend and retract relative to the pen tube 10 along the axial direction X of the pen tip 30.
[0081] The module's front support 20 is located within the accommodating cavity 101. (Reference) Figure 2 , Figure 3 and Figure 4The front support 20 of the module has a communicating assembly cavity 201 and an assembly port 202. The assembly port 202 is located at the end of the front support 20 of the module near the telescopic port 102. The assembly port 202 is opposite to the telescopic port 102, and the axis of the assembly port 202 may be collinear or approximately collinear with the axis of the telescopic port 102.
[0082] refer to Figure 2 The conductive support 40 passes through the assembly port 202 and is connected to the pen tip 30. The dimension of the assembly port 202 along the radial Y direction of the pen tip 30 is larger than the radial Y direction of the pen tip 30, so that the pen tip 30 can be moved into the assembly port 202, thereby allowing the pen tip 30 to retract into the pen tube 10.
[0083] refer to Figure 2 The conductive bracket 40 may have a insertion channel 403 on the side facing the telescopic opening 102, and a portion of the pen tip 30 may be inserted into the insertion channel 403. The portion of the pen tip 30 inserted into the insertion channel 403 is interference-fitted with the conductive bracket 40 so that the pen tip 30 is fixedly connected to the conductive bracket 40.
[0084] refer to Figure 2 and Figure 5 The conductive support 40 has a stop portion 401, which is located in the assembly cavity 201 and is spaced apart from the assembly opening 202 along the axial direction X of the pen tip 30.
[0085] The first conductive element 50 can be a metal sheet, a metal block, or other conductive components. The first conductive element 50 is located within the assembly cavity 201 and is closer to the telescopic opening 102 than the stop portion 401. At least a portion of the first conductive element 50 is axially opposed to and spaced apart from the stop portion 401 along the telescopic opening 102. The first conductive element 50 is connected to the module front bracket 20.
[0086] The conductive elastic element 60 can be a spring or an elastic washer, etc. The conductive elastic element 60 is sleeved on the outside of the conductive bracket 40, and both ends of the conductive elastic element 60 are respectively pressed and engaged with the first conductive element 50 and the stop part 401.
[0087] Taking the conductive elastic element 60 as an example, the conductive elastic element 60 is disposed in a compressed state between the first conductive element 50 and the stop portion 401, so that the conductive elastic element 60 is in compression engagement with the first conductive element 50 and the stop portion 401 respectively.
[0088] refer to Figure 2 The motherboard 90 is located within the accommodating cavity 101. (Reference) Figure 6 , Figure 7 and Figure 8The motherboard 90 is electrically connected to the first conductive element 50. The first conductive element 50, the conductive elastic element 60, the conductive support 40, and the pen tip 30 are all conductive. The motherboard 90, the first conductive element 50, the conductive elastic element 60, the conductive support 40, and the pen tip 30 constitute the first electric field link. The pen tip 30 acts as a transmitter to emit the first electric field signal. The first electric field signal is radiated onto the touch screen 300 of the touch device. The touch chip of the touch device can calculate the center position of the first electric field signal in real time, which is the center position of the writing end 3011 of the pen tip 30.
[0089] Since the approximate position of the writing end 3011 of the pen tip 30 can only be determined through the first electric field link, it is difficult to determine the precise landing point of the stylus. To improve the positioning accuracy of the stylus on the touchscreen 300, reference... Figure 2 In this embodiment of the application, the stylus is further provided with an electric field emitter 70 and a second conductive element 80 inside the pen tube 10.
[0090] refer to Figure 2 The electric field emitter 70 is located on the side of the front bracket 20 of the module near the telescopic opening 102 and outside the pen tip 30, so that the electric field emitter 70 is closer to the telescopic opening 102. In this way, when the stylus is writing, the distance between the electric field emitter 70 and the touch screen 300 is smaller, making it easier for the sensing electrodes on the touch screen 300 to receive the electric field signal emitted by the electric field emitter 70.
[0091] The second conductive component 80 can be a conductive element such as a spring or a metal sheet. (Reference) Figure 6 and Figure 7 The second conductive element 80 is connected to the electric field transmitter 70 and electrically connected to the motherboard 90. The second conductive element 80 is conductive. The motherboard 90, the second conductive element 80, and the electric field transmitter 70 constitute a second electric field link. The electric field transmitter 70 emits a second electric field signal, which is radiated onto the touch screen 300. The touch chip can calculate the distance between the second electric field signal and the first electric field signal in real time. Based on the calculated distance, it calculates the tilt angle or degree of tilt of the stylus relative to the touch screen 300, and then corrects the landing position of the pen tip 30, further improving the accuracy of the position of the pen tip 30 displayed on the touch screen 300, so that the trajectory of the stylus is less likely to deviate when writing.
[0092] refer to Figure 9 The pen tip 30 acts as a transmitter to emit a first electric field signal, which is radiated onto the touch screen 300 of the touch device. The touch chip of the touch device can calculate in real time the center position A of the first electric field signal (that is, the center position A of the writing end of the pen tip 30) and the projection position A1 of the center position A of the writing end of the pen tip 30 on the touch screen 300.
[0093] The electric field transmitter 70 emits a second electric field signal, which is radiated onto the touch screen 300. The touch chip can calculate in real time the center position B of the second electric field signal (that is, the center position B of the electric field transmitter 70) and the projection position B1 of the center position B of the electric field transmitter 70 onto the touch screen 300, and calculate ∠BAC=arccos(A1B1 / AB), where A1B1=AC, the length of AB is a known fixed value after the stylus design is completed, and ∠BAC is the tilt angle of the stylus relative to the touch screen 300.
[0094] refer to Figure 2 and Figure 6 An outer notch 703 may be constructed on the outside of the electric field emitter 70, with one end of the notch 703 opposite to the telescopic opening 102 penetrating through the electric field emitter 70. The second conductive element 80 may be disposed within the notch 703. By using the notch 703 on the electric field emitter 70 to accommodate the second conductive element 80, the space occupied by the second conductive element 80 in the accommodating cavity 101 is reduced, making the structure of the electric field emitter 70 and the second conductive element 80 more compact, thereby reducing the size of the pen tube 10 and the stylus.
[0095] refer to Figure 2 The electric field emitter 70 can form a first channel 701 and a second channel 702 arranged along the axial direction X of the pen tip 30. The second channel 702 is farther away from the telescopic opening 102 than the first channel 701, and the inner diameter of the second channel 702 is larger than the inner diameter of the first channel 701.
[0096] refer to Figure 2 The module front bracket 20 includes a first tube 203 and a second tube 204 arranged along the axial direction X of the pen tip 30. The first tube 203 is closer to the telescopic port 102 than the second tube 204, and the outer diameter of the first tube 203 is smaller than the outer diameter of the second tube 204.
[0097] The first tube 203 is inserted into the second channel 702. On the one hand, the first tube 203 can limit the electric field transmitter 70, making it less likely for the electric field transmitter 70 to shift relative to the module front bracket 20 along the radial Y of the pen tip 30, thus improving the assembly reliability of the electric field transmitter 70 and the module front bracket 20. On the other hand, the first tube 203 is inserted into the second channel 702, so that the electric field transmitter 70 and the module front bracket 20 are partially nested, reducing the size of the electric field transmitter 70 and the module front bracket 20 as a whole along the axial X of the pen tip 30, improving the structural compactness of the electric field transmitter 70 and the module front bracket 20, and reducing the axial dimension of the stylus.
[0098] refer to Figure 2 and Figure 4In the structure of the module front bracket 20, the assembly cavity 201 may include a first pipe section 205 and a second pipe section 206. The first pipe section 205 is closer to the telescopic port 102 than the second pipe section 206, and the inner diameter of the first pipe section 205 is smaller than the inner diameter of the second pipe section 206.
[0099] refer to Figure 2 The stop portion 401 is located inside the second tube section 206 and is spaced apart from the first tube section 205 along the axial direction X of the pen tip 30. Along the radial direction Y of the pen tip 30, the distance between the end of the stop portion 401 near the wall of the second tube section 206 and the axis of the pen tip 30 is greater than the distance between the wall of the first tube section 205 and the axis of the pen tip 30, so that the stop portion 401 is difficult to move into the first tube section 205, thereby making it difficult for the conductive support 40 and the pen tip 30 to detach from the pen tube 10.
[0100] refer to Figure 2 , Figure 10 and Figure 11 In the structure of the pen tip 30, the pen tip 30 may include a flexible conductive part 301 and a rigid part 302. The flexible conductive part 301 may be a soft rubber part, and the flexible conductive part 301 is conductive and used to emit a first electric field signal. The rigid part 302 is sleeved on a portion of the outer periphery of the flexible conductive part 301. The hardness of the rigid part 302 is greater than the hardness of the flexible conductive part 301. The portion of the flexible conductive part 301 located at the front end of the rigid part 302 is the writing end 3011 of the pen tip 30.
[0101] refer to Figure 2 When the writing end 3011 of the pen tip 30 extends out of the telescopic opening 102, the rigid part 302 is opposite to the opening wall of the telescopic opening 102, and part of the rigid part 302 extends out of the telescopic opening 102 to avoid the opening wall of the telescopic opening 102 from damaging the flexible conductive part 301.
[0102] The rigid part 302 can be a rigid rubber tube. Part of the rigid part 302 is sleeved on the outside of the flexible conductive part 301 to protect part of the flexible conductive part 301, so that the part of the flexible conductive part 301 covered by the rigid part 302 is not easily deformed or damaged.
[0103] In addition, the rigid part 302 can improve the structural strength of the pen tip 30 and avoid the problem that the flexible conductive part 301 is prone to deformation when there is only the flexible conductive part 301.
[0104] In some possible implementations of the embodiments of this application, the end of the conductive support 40 away from the telescopic opening 102 can abut against the pen tube 10 under the elastic force of the conductive elastic element 60, so that the position of the end of the conductive support 40 away from the pen tube 10 remains unchanged, and the writing end 3011 of the pen tip 30 always remains in the extended state, that is, in the state of extending out of the telescopic opening 102.
[0105] In some other possible implementations of the embodiments of this application, reference is made to Figure 2 The stylus may also include a resilient telescopic component 100. The resilient telescopic component 100 may be disposed on the side of the conductive support 40 opposite to the telescopic opening 102. The end of the resilient telescopic component 100 away from the conductive support 40 may abut against the pen tube 10. The resilient telescopic component 100 may elastically extend and retract along the axial direction X of the pen tip 30, so that the pen tip 30 extends or retracts.
[0106] refer to Figure 1 and Figure 2 When the pen tip 30 is in the extended state, the writing end 3011 of the pen tip 30 extends to the outside of the retractable port 102 so that writing can be performed on the touch screen 300 through the writing end 3011.
[0107] When the pen tip 30 is in the retracted state, the pen tip 30 is completely retracted into the pen tube 10 to protect the pen tip 30 and prevent it from being damaged.
[0108] The conductive elastic element 60 is disposed in a compressed state between the first conductive element 50 and the conductive support 40, so that the conductive elastic element 60 exerts continuous pressure on the conductive support 40 in a direction away from the telescopic opening 102, so that the pen tip 30 will not move outward when the stylus is writing.
[0109] In some embodiments, the elastic telescopic component 100 may be a spring.
[0110] In other embodiments, reference is made to Figure 2 The elastic telescopic component 100 may include a telescopic shell 110, a limiting shell 120, an insulating component 130, and a collapsible elastic component 140.
[0111] The telescopic shell 110 abuts against the conductive bracket 40.
[0112] The limiting shell 120 and the telescopic shell 110 are coaxially nested and slide against each other. The limiting shell 120 can be partially embedded within the telescopic shell 110 (see reference). Figure 2 Alternatively, a portion of the limiting shell 120 may be covered by the telescopic shell 110.
[0113] An insulating element 130 is disposed at the end of the limiting housing 120 away from the telescopic opening 102. The insulating element 130 can abut against the pen tube 10.
[0114] The collapsible elastic element 140 can be a spring, elastic washer, etc. The collapsible elastic element 140 is disposed in a compressed state inside the telescopic shell 110 and the limiting shell 120. The two ends of the collapsible elastic element 140 abut against the telescopic shell 110 and the insulating element 130, respectively.
[0115] The insulating element 130 is insulating, thus preventing current on the conductive support 40 from being transmitted to the pen tube 10 through the collapsible elastic element 140.
[0116] The collapsible elastic element 140 is disposed in a compressed state between the telescopic shell 110 and the insulating element 130 to apply an elastic force toward the telescopic opening 102 to the telescopic shell 110, which keeps the telescopic shell 110 in elastic contact with the conductive support 40.
[0117] In the stylus of this application embodiment, the conductive bracket 40 and the telescopic shell 110 can automatically adapt to each other through active contact, avoiding the problem of excessive axial constraint caused by insufficient concentricity when the conductive bracket 40 and the telescopic shell 110 are set as a whole, and preventing the pen tip 30 from getting stuck when writing.
[0118] The stylus in this embodiment may further include a pressure detection device 200, which may be a force sensor or other pressure-detecting device. The pressure detection device 200 is disposed within the accommodating cavity 101 and located on the side of the elastic telescopic component 100 away from the conductive support 40. The detection end of the pressure detection device 200 abuts against the end of the elastic telescopic component 100 away from the conductive support 40 to detect the pressure transmitted from the elastic telescopic component 100 to the detection end. The pressure detection device 200 is electrically connected to the motherboard 90 to transmit real-time pressure data to the motherboard 90. The motherboard 90 combines the pressure signal with positioning coordinates to perform pen placement judgment, position compensation, and pressure sensitivity rendering, thereby improving writing accuracy and handwriting interaction experience.
[0119] The conductive elastic element 60 is disposed in a compressed state between the first conductive element 50 and the conductive support 40, so that the conductive elastic element 60 exerts continuous pressure on the conductive support 40 in a direction away from the telescopic opening 102. This not only prevents the pen tip 30 from moving outward when writing, but also ensures that the conductive support 40 and the elastic telescopic component 100 exert continuous pressure on the pressure detection device 200. This ensures that the pressure collected by the pressure detection device 200 is continuous, eliminating the blank area of the pressure-sensitive signal, realizing full-range linear pressure detection, eliminating the sensing idle stroke, and accurately identifying pressure changes from light to heavy pressure, thereby improving the smoothness of pressure-sensitive writing, the sensitivity of pen response, and the positioning stability.
[0120] In the implementation of the elastic expansion assembly 100 including the insulating member 130, the insulating member 130 abuts against the detection end of the pressure detection device 200 to detect the pressure applied to the detection end by the insulating member 130.
[0121] During the writing process on the touch screen 300, the pen tip 30, under the writing force from the user, causes the conductive support 40 to retract inward. The conductive support 40 presses against the telescopic shell 110, and the telescopic shell 110 moves away from the telescopic opening 102, pressing against the collapsible elastic element 140. After being compressed, the collapsible elastic element 140 applies an elastic force to the insulating element 130. The insulating element 130 presses against the detection end of the pressure detection device 200, so the detection end can detect the real-time data of the writing force.
[0122] refer to Figure 2 In the implementation of the elastic telescopic component 100 including the collapsible elastic element 140, when the pen tip 30 is in the extended state, the pen tip 30 protrudes from the pen tube 10 by a length L1, the collapsible elastic element 140 has a first preload, and the length of the collapsible elastic element 140 is D1. The maximum compression stroke of the collapsible elastic element 140 is L2, which is greater than L1, so that the pen tip 30 can completely collapse into the pen tube 10. In a drop scenario, the pen tip 30 collapses instantly after being impacted, allowing the pen tube 10 to withstand the impact force, reducing the risk of damage to the pen tip 30, and protecting the pressure detection device 200 from damage by the impact force.
[0123] In the implementation where the limiting shell 120 is partially embedded within the telescopic shell 110, when the pen tip 30 is in the extended state, the end of the limiting shell 120 near the telescopic opening 102 is located inside the telescopic shell 110, and the distance between the limiting shell 120 and the cavity wall of the telescopic shell 110 near the telescopic opening 102 is L2. In this way, the telescopic shell 110 can be compressed by a distance L2 relative to the limiting shell 120 along the axial direction X of the pen tip 30, so that the maximum compression stroke of the collapsible elastic element 140 is L2.
[0124] When the pen tip 30 is in the extended state, the collapsible elastic element 140 is in a compressed state, and the preload of the collapsible elastic element 140 is less than or equal to the safe force threshold of the touch screen 300. When the writing force is greater than the preload of the collapsible elastic element 140, the pen tip 30 will retract inward to protect the touch screen 300 and avoid overload and scratching the flexible screen.
[0125] refer to Figure 2 The end of the limiting shell 120 away from the telescopic opening 102 may be constructed with a through hole 121.
[0126] refer to Figure 2 The insulating component 130 includes a force-transmitting part 131 and a limiting part 132. The force-transmitting part 131 passes through the through hole 121 and abuts against the detection end of the pressure detection device 200. The limiting part 132 is connected to the end of the force-transmitting part 131 near the telescopic port 102. The limiting part 132 is located inside the limiting shell 120 and is limited and engaged with the limiting shell 120 to assemble the insulating component 130 onto the limiting shell 120 and prevent the insulating component 130 from disengaging from the limiting shell 120 along the axial direction X of the pen tip 30.
[0127] refer to Figure 5 and Figure 12 The telescopic shell 110 may have a boss 111 at one end near the telescopic opening 102. The side of the boss 111 near the telescopic opening 102 has an abutment surface 112, which may be a plane. The abutment surface 112 may be perpendicular to the axis of the telescopic opening 102.
[0128] refer to Figure 5 and Figure 13 The conductive bracket 40 has a mating surface 402 on the side away from the telescopic opening 102. The mating surface 402 is curved and protrudes toward the abutting surface 112, and abuts and engages with the abutting surface 112.
[0129] In some embodiments, reference Figure 13 The mating surface 402 can be a sphere, and the center of the sphere is located on the side of the mating surface 402 away from the contact surface 112.
[0130] In other embodiments, the mating surface 402 can be an arc surface, and the center of the arc surface is located on the side of the mating surface 402 away from the abutment surface 112.
[0131] Since the mating surface 402 is curved, the contact between the mating surface 402 and the abutting surface 112 is not a surface contact, but a point contact. This reduces the contact area between the mating surface 402 and the abutting surface 112, thereby reducing the friction between the mating surface 402 and the abutting surface 112, reducing the detection error of the pressure detection device 200, and improving the accuracy of the pressure detected by the pressure detection device 200.
[0132] This application also provides an electronic component, including a touch device and a stylus as described in the foregoing embodiments.
[0133] The touch device includes a touch screen 300 and a touch chip.
[0134] The touch screen 300 includes a screen body and sensing electrodes. The sensing electrodes can be disposed on the inner side of the screen body and are used to receive the electric field signal of the stylus.
[0135] The touch chip is electrically connected to the sensing electrode and is used to determine the position of the stylus on the screen body based on the electric field signal.
[0136] In this embodiment, the electronic components coordinate with each other via a dual electric field link to position the stylus. The motherboard 90, the first conductive element 50, the conductive elastic element 60, the conductive support 40, and the pen tip 30 constitute the first electric field link. The pen tip 30 acts as a transmitter, emitting a first electric field signal that radiates onto the touchscreen 300 of the touch device. The touch chip of the touch device can calculate the center position of the first electric field signal in real time, which is also the center position of the writing end 3011 of the pen tip 30. The motherboard 90, the second conductive element 80, and the electric field transmitter 70 constitute the second electric field link. The electric field transmitter 70 emits a second electric field signal that radiates onto the touchscreen 300. The touch chip can calculate the distance between the second and first electric field signals in real time. Based on the calculated distance, it calculates the tilt angle or degree of tilt of the stylus relative to the touchscreen 300, and then corrects the landing position of the pen tip 30, further improving the accuracy of the pen tip 30's position displayed on the touchscreen 300, making it less prone to deviation in the writing trajectory.
[0137] The electronic components in this embodiment include the stylus in the foregoing embodiments. The specific structure, working principle, and functions of the stylus have been described in detail in the foregoing embodiments and will not be repeated here.
[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A stylus, characterized in that, include: The pen tube (10) has a connected receiving cavity (101) and a telescopic opening (102). The module front bracket (20) is located in the accommodating cavity (101) and has a communicating assembly cavity (201) and assembly port (202). The pen tip (30) is conductive and passes through the telescopic opening (102). A conductive bracket (40) is inserted through the assembly port (202) and connected to the pen tip (30). The conductive bracket (40) has a stop portion (401), which is located in the assembly cavity (201) and is spaced apart from the assembly port (202) along the axial direction of the pen tip (30). The first conductive element (50) is located in the assembly cavity (201) and is closer to the telescopic opening (102) than the stop portion (401); the first conductive element (50) is connected to the front bracket (20) of the module. A conductive elastic element (60) is sleeved on the outside of the conductive support (40), and the two ends of the conductive elastic element (60) are respectively pressed and engaged with the first conductive element (50) and the stop part (401). An electric field emitter (70) is disposed on the side of the front bracket (20) of the module near the telescopic opening (102) and located outside the pen tip (30); The second conductive element (80) is connected to the electric field emitter (70); The motherboard (90) is disposed in the accommodating cavity (101) and is electrically connected to the first conductive element (50) and the second conductive element (80) respectively.
2. The stylus according to claim 1, characterized in that, The electric field emitter (70) has a notch (703) on its outer side, and the end of the notch (703) opposite to the telescopic opening (102) passes through the electric field emitter (70). The second conductive element (80) is disposed in the notch (703).
3. The stylus according to claim 1, characterized in that, The electric field emitter (70) has a first channel (701) and a second channel (702) arranged along the axial direction of the pen tip (30), the second channel (702) being further away from the telescopic opening (102) than the first channel (701), and the inner diameter of the second channel (702) being larger than the inner diameter of the first channel (701); The module front bracket (20) includes a first tube (203) and a second tube (204) arranged along the axial direction of the pen tip (30). The first tube (203) is closer to the telescopic opening (102) than the second tube (204). The outer diameter of the first tube (203) is smaller than the outer diameter of the second tube (204). The first tube (203) passes through the second channel (702).
4. The stylus according to claim 1, characterized in that, The assembly cavity (201) includes a first pipe section (205) and a second pipe section (206). The first pipe section (205) is closer to the telescopic port (102) than the second pipe section (206). The inner diameter of the first pipe section (205) is smaller than the inner diameter of the second pipe section (206). The stop (401) is located inside the second pipe section (206) and is spaced apart from the first pipe section (205) along the axial direction of the pen tip (30); along the radial direction of the pen tip (30), the distance between the end of the stop (401) near the pipe wall of the second pipe section (206) and the axis of the pen tip (30) is greater than the distance between the pipe wall of the first pipe section (205) and the axis of the pen tip (30).
5. The stylus according to claim 1, characterized in that, The pen tip (30) includes a flexible conductive part (301) and a rigid part (302); the rigid part (302) is sleeved on a portion of the outer periphery of the flexible conductive part (301); When the writing end (3011) of the pen tip (30) extends out of the telescopic opening (102), the rigid part (302) is opposite to the wall of the telescopic opening (102), and a portion of the rigid part (302) extends out of the telescopic opening (102).
6. The stylus according to any one of claims 1-5, characterized in that, The stylus also includes: An elastic telescopic component (100) is disposed in the assembly cavity (201) and located on the side of the conductive bracket (40) away from the telescopic opening (102). The elastic telescopic component (100) abuts against the conductive bracket (40). A pressure detection device (200) is disposed in the accommodating cavity (101) and located on the side of the elastic telescopic component (100) away from the conductive support (40). The detection end of the pressure detection device (200) abuts against the end of the elastic telescopic component (100) away from the conductive support (40). The pressure detection device (200) is electrically connected to the main board (90).
7. The stylus according to claim 6, characterized in that, The elastic telescopic component (100) includes: The telescopic shell (110) abuts against the conductive support (40); The limiting shell (120) is coaxially nested with the telescopic shell (110) and slides with each other; An insulating component (130) is disposed at one end of the limiting shell (120) away from the telescopic port (102), and the insulating component (130) abuts against the pressure detection device (200); A collapsible elastic element (140) is disposed in a compressed state within the telescopic shell (110) and the limiting shell (120), with both ends of the collapsible elastic element (140) abutting against the telescopic shell (110) and the insulating element (130), respectively.
8. The stylus according to claim 7, characterized in that, The telescopic shell (110) has a boss (111) at one end near the telescopic opening (102), and the boss (111) has an abutment surface (112) on the side near the telescopic opening (102), and the abutment surface (112) is a plane; The conductive support (40) has a mating surface (402) on the side away from the telescopic opening (102). The mating surface (402) is curved and protrudes toward the abutting surface (112), and abuts against the abutting surface (112).
9. The stylus according to claim 8, characterized in that, The mating surface (402) is a spherical surface, and the center of the sphere is located on the side of the mating surface (402) away from the contact surface (112).
10. An electronic component, characterized in that, include: Touch device and stylus as described in any one of claims 1-9; The touch device includes a touch screen (300) and a touch chip; The touch screen (300) includes a screen body and sensing electrodes, the sensing electrodes being used to receive the electric field signal of the stylus; The touch chip is electrically connected to the sensing electrode, and the touch chip is used to determine the position of the stylus on the screen body based on the electric field signal.