Touch pen

Abstract

The stylus comprises a stylus tube, a flat conductive frame and a stylus point, a circuit board is arranged in the stylus tube, the flat conductive frame is arranged in the stylus tube and electrically connected with the circuit board, the stylus point is located at one end of the stylus tube in the length extension direction, and a first electrode is arranged in the stylus point. The first electrode is electrically connected with the circuit board through the flat conductive frame; according to the touch pen, the thickness of the touch pen is reduced by arranging the flat conductive frame, meanwhile, a traditional conductive circuit is replaced by the flat conductive frame, the first electrode in the pen point can be electrically connected with the circuit board directly through the flat conductive frame, and therefore the use effect of the touch pen is ensured, and meanwhile the touch pen is convenient to use. The whole structure of the touch pen is simplified, light and thin, and the problems that an existing touch pen is thick and heavy in structure and occupies a large space when being carried are solved.

Description

Technical Field

[0001] This application relates to the field of input device technology, and in particular to styluses. Background Technology

[0002] A stylus, also known as a touch screen pen or electronic screen pen, is a portable and easy-to-use input device that is widely used in 3C electronic products such as laptops, tablets, and mobile phones.

[0003] Currently, most styluses have a relatively bulky structure, which takes up a lot of space when carried. As portable electronic products such as smartphones and tablets gradually become thinner and lighter, how to achieve a streamlined and lightweight structure while ensuring the stylus's usability has become a key issue in the field of stylus design. Utility Model Content

[0004] Therefore, it is necessary to provide a stylus that addresses the problem of the aforementioned stylus being relatively bulky and taking up a lot of space when carried.

[0005] A stylus, comprising:

[0006] The pen tube contains a circuit board.

[0007] A flat conductive frame is disposed inside the pen tube and electrically connected to the circuit board;

[0008] The pen tip is located at one end of the pen tube along its length. The pen tip contains a first electrode, which is electrically connected to the circuit board via the flat conductive frame.

[0009] In one embodiment, the stylus further includes a pressure sensor disposed on the flat conductive frame and electrically connected to the circuit board, the pressure sensor being configured to provide a signal to the circuit board when the pen tip moves axially along the pen tube.

[0010] In one embodiment, the flat conductive frame includes an elastic conductive element, a first conductive frame body, and a second conductive frame body. The second conductive frame body is slidably connected to the first conductive frame body, and the first conductive frame body is electrically connected to the circuit board. The elastic direction of the elastic conductive element is parallel to the axial direction of the pen tube, and one end of the elastic conductive element is disposed on the first conductive frame body, while the other end of the elastic conductive element is disposed on the second conductive frame body. The pen tip is disposed on the second conductive frame body.

[0011] In one embodiment, the second conductive frame is provided with a component receiving slot, the pressure sensor is housed in the component receiving slot, and a portion of the first conductive frame extends into the interior of the component receiving slot and is connected to the pressure sensor.

[0012] In one embodiment, the pen tube has a first side and a second side in a cross section perpendicular to its own axis, the first side being perpendicular to the second side, and the length of the first side being greater than the length of the second side.

[0013] The second conductive frame has a first surface and a second surface that are vertically connected.

[0014] The component receiving groove is formed on the second surface and extends into the interior of the second conductive frame along the direction of the pen tube width.

[0015] In one embodiment, the element receiving groove extends through the second conductive frame along the thickness direction of the pen tube.

[0016] In one embodiment, the first conductive frame includes a first frame, a first bent portion and a second bent portion. The second bent portion is located inside the component receiving groove and is connected to the pressure sensor. The first frame is located outside the component receiving groove and is spaced apart from the second bent portion along the length extension direction of the pen tube. The first bent portion connects the first frame and the second bent portion.

[0017] In one embodiment, the pressure sensor has a flexible circuit board that is bent, with a portion of the flexible circuit board located inside the component receiving slot and another portion of the flexible circuit board passing through the first frame and connected to the circuit board.

[0018] In one embodiment, the pen tip is detachably connected to the flat conductive frame.

[0019] In one embodiment, the flat conductive frame has a flexible conductive element, and the pen tip is detachably connected to the flexible conductive element.

[0020] In one embodiment, the pen tube has a flat structure.

[0021] The aforementioned stylus reduces its thickness by incorporating a flat conductive frame. Furthermore, by replacing traditional conductive circuitry with this flat conductive frame, the first electrode inside the pen tip can be directly electrically connected to the circuit board via the flat conductive frame. This achieves a simplified and thinner overall structure for the stylus while ensuring its performance, thus solving the problem of existing stylus structures being bulky and taking up too much space when carried. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a stylus according to some embodiments of this application.

[0023] Figure 2 This is a schematic diagram of the external structure of a stylus according to some embodiments of this application.

[0024] Figure 3 This is a partial structural diagram of the stylus in some embodiments of this application.

[0025] Figure 4 This is a schematic diagram of the structure between the pen tip and a partially flat conductive frame of a stylus according to some embodiments of this application.

[0026] Figure 5 This is a schematic diagram of the structure between the first electrode of the stylus and a partially flat conductive frame in some embodiments of this application.

[0027] Figure 6 This is a schematic diagram of the structure between the second electrode of the stylus, the pen tip, and the circuit board in some embodiments of this application.

[0028] Figure label:

[0029] 1. Pen tube; 11. Circuit board; 12. Flat mounting bracket;

[0030] 2. Flat conductive frame;

[0031] 21. Elastic conductive components;

[0032] 22. First conductive frame; 221. First frame; 222. First connecting part; 223. Slot; 224. First bending part; 225. Second bending part;

[0033] 23. Second conductive frame; 231. Second frame; 232. Second connecting part; 233. Insert rod;

[0034] 24. Flexible conductive components;

[0035] 25. Component receiving slot;

[0036] 3. Pen tip; 31. First electrode; 32. Insulating pen tip;

[0037] 4. Pressure sensor; 41. Flexible circuit board;

[0038] 5. Second electrode. Detailed Implementation

[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0040] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0045] Although styluses are widely used in mobile electronic devices, stylus storage has always been one of the design challenges for various mobile electronic devices. Increasing the space inside the device to store the stylus means reducing the space available for other hardware. Currently, most styluses are designed to be round, and the overall structure is relatively thick and heavy, which is not conducive to the current industry trend of making mobile electronic devices thinner and lighter.

[0046] Therefore, this application provides a stylus with a flat structure, which is thinner and lighter than existing circular styluses, effectively reducing storage space. Furthermore, by modifying the internal structure of the stylus, this application ensures that the stylus maintains its flat structure without compromising its normal function, thus guaranteeing optimal usability.

[0047] See Figure 1 and Figure 2 One embodiment of this application provides a stylus, including a pen tube 1, a flat conductive frame 2, and a pen tip 3. The pen tube 1 houses the flat conductive frame 2 and a pressure sensor 4, and provides a grip for the user. The pen tip 3 is located at one end of the pen tube 1 along its length and provides a writing surface for the user.

[0048] In a specific configuration, the pen tube 1 has a circuit board 11 inside, and the pen tip 3 has a first electrode 31 inside. The first electrode 31 is electrically connected to the circuit board 11 through a flat conductive frame 2, so that the first electrode 31 can give a signal to the circuit board 11 when the pen tip 3 is writing.

[0049] The pen tube 1 has a flat structure. It is understood that a flat structure is a common concept in fields such as geometry, physical structure, or organizational structure, and its definition and characteristics vary depending on the specific application. In the embodiments of this application, a flat structure refers to a shape with a low height (thickness) but a large planar area. For example, the length of the pen tube 1 is greater than its width, and the width of the pen tube 1 is greater than its height (thickness).

[0050] In summary, the stylus of this application reduces the thickness of the stylus by setting a flat conductive frame 2. At the same time, by replacing the traditional conductive circuit with the flat conductive frame 2, the first electrode 31 inside the pen tip 3 can be directly electrically connected to the circuit board 11 through the flat conductive frame 2. Thus, while ensuring the stylus's performance, the overall structure of the stylus is simplified and made thinner, solving the problem that the existing stylus structure is relatively thick and heavy, taking up a lot of space when carried.

[0051] See Figure 1 and Figure 2 To ensure the proper installation of the circuit board 11, battery, magnet, wireless charging component, and other necessary components, in one embodiment, the stylus also includes a flat mounting bracket 12. The flat mounting bracket 12 is disposed inside the pen tube and connected to the flat conductive frame 2, and the circuit board 11 is disposed on the flat mounting bracket 12.

[0052] Specifically, to rationally allocate the mounting structure of the flat mounting bracket 12, in the embodiments of this application, the flat mounting bracket 12 includes a plate-shaped frame with perpendicular mounting surfaces and connecting surfaces. A mounting groove is provided on the mounting surface, the circuit board 11 is disposed within the mounting groove, and the first conductive frame 22 is disposed on the connecting surface and electrically connected to the circuit board 11.

[0053] See Figure 3 In one embodiment, the stylus also includes a pressure sensor 4, which is disposed on the flat conductive frame 2 and electrically connected to the circuit board 11. The pressure sensor 4 is configured to give a signal to the circuit board 11 when the pen tip 3 moves along the axial direction of the pen tube 1, so that the circuit board 11 can control the line thickness when the pen tip 3 writes according to the detected pressure.

[0054] Specifically, see Figure 3 and Figure 4The flat conductive frame 2 includes an elastic conductive element 21, a first conductive frame body 22, and a second conductive frame body 23. The second conductive frame body 23 is slidably connected to the first conductive frame body 22. The first conductive frame body 22 is electrically connected to the circuit board 11. One end of the elastic conductive element 21 in the elastic direction is disposed on the first conductive frame body 22, and the other end of the elastic conductive element 21 in the elastic direction is disposed on the second conductive frame body 23. The pen tip 3 is disposed on the second conductive frame body 23 and can move along the axial direction of the pen tube 1 when the user performs writing operations, causing the elastic conductive element 21 to deform.

[0055] A pressure sensor 4 is positioned between the first conductive frame 22 and the second conductive frame 23 and is electrically connected to the circuit board 11. When the user performs a writing operation, the pen tip 3 is subjected to an external force and moves towards the pen tube 1, shortening the distance between the first conductive frame 22 and the second conductive frame 23. The pressure sensor 4, located between the first conductive frame 22 and the second conductive frame 23, can transmit the detected pressure value to the circuit board 11, allowing the circuit board 11 to control the line thickness when the pen tip 3 writes based on the detected pressure.

[0056] More specifically, to ensure that the pressure sensor 4 does not short-circuit after being placed on the flat conductive frame 2 which has a conductive effect, in one embodiment, the pressure sensor 4 includes a first insulating part, a second insulating part, and a sensing part. The first insulating part is disposed on the first conductive frame 22, the second insulating part is disposed on the second conductive frame 23, and the sensing part is electrically connected to the circuit board 11.

[0057] In one embodiment, the sensing element is disposed on the second insulating part and abuts against the first insulating part. That is, the sensing element has a sensing surface facing and abutting against the first insulating part. When the pen tip 3 is subjected to an external force and moves toward the pen tube 1, the second conductive frame 23 can move along the axial direction of the pen tube 1 toward the first conductive frame 22, so that the first insulating part adjusts the pressure applied to the sensing surface, and the sensing element can transmit the pressure value to the circuit board 11, so that the circuit board 11 controls the line thickness when the pen tip 3 writes according to the detected pressure.

[0058] In another embodiment, the sensing part is disposed on the first insulating part and abuts against the second insulating part. That is, the sensing part has a sensing surface facing and abutting against the second insulating part. When the pen tip 3 is subjected to an external force and moves toward the pen tube 1, the second conductive frame 23 can move along the axial direction of the pen tube 1 toward the first conductive frame 22, so that the second insulating part adjusts the pressure applied to the sensing surface, and the sensing part can transmit the pressure value to the circuit board 11, so that the circuit board 11 controls the line thickness when the pen tip 3 writes according to the detected pressure.

[0059] See Figure 3To improve the stability of the connection between the elastic conductive element 21 and the first conductive frame 22 and the second conductive frame 23, in one embodiment, the elastic conductive element 21 is a spring, with one end of the spring in the elastic direction sleeved on a portion of the first conductive frame 22 and the other end of the spring in the elastic direction sleeved on a portion of the second conductive frame 23.

[0060] Specifically, the spring is a flat spring. A flat spring is a spring with a flat cross-section, which can be rectangular, elliptical, or other flat shapes. This design gives it high strength and stiffness in a specific direction while maintaining good elasticity in the vertical direction. That is, compared to a circular spring, under the same load, a flat spring has greater elastic force, greater stiffness, more stored energy, and a lower compression height. Therefore, by making the elastic conductive element 21 a flat spring, this application enables the elastic conductive element 21 to effectively adapt to the flat conductive frame 2 with its flat structure, while providing the flat conductive frame 2 with greater elastic force and more stable performance, thus improving the performance of the flat conductive frame 2.

[0061] See Figure 3 and Figure 5 To ensure a sliding connection between the first conductive frame 22 and the second conductive frame 23, in one embodiment, the first conductive frame 22 has a first connecting portion 222 and a second connecting portion 232. The first connecting portion 222 and the second connecting portion 232 are slidably connected to achieve a sliding connection between the first conductive frame 22 and the second conductive frame 23.

[0062] Specifically, in one embodiment, the first conductive frame 22 has a first frame 221 and a first connecting portion 222. The first connecting portion 222 is disposed on the side of the first frame 221 facing the second conductive frame 23, and the side of the first connecting portion 222 facing the second conductive frame 23 has a slot 223. The second conductive frame 23 has a second frame 231 and a second connecting portion 232. The second connecting portion 232 is disposed on the side of the second conductive frame 23 facing the first conductive frame 22, and the side of the second connecting portion 232 facing the first conductive frame 22 has a plug 233. The plug 233 is inserted into the slot 223 to achieve a sliding engagement connection between the first connecting portion 222 and the second connecting portion 232.

[0063] In another embodiment (not shown), the first conductive frame has a first frame and a first connecting portion. The first connecting portion is disposed on the side of the first frame facing the second conductive frame, and has a plug on the side of the first connecting portion facing the second conductive frame. The second conductive frame has a second frame and a second connecting portion. The second connecting portion is disposed on the side of the second conductive frame facing the first conductive frame, and has a slot on the side of the second connecting portion facing the first conductive frame. The plug is inserted into the slot to achieve a sliding engagement connection between the first connecting portion and the second connecting portion.

[0064] Furthermore, in the above structure, a spring is sleeved on the first connecting part 222 and the second connecting part 232 to further improve the structural stability of the flat conductive frame 2. Specifically, the first connecting part 222 and the second connecting part 232 are both located inside the spring, and the two ends of the spring in the elastic direction abut against the first frame 221 and the second frame 231, respectively. When the first conductive frame 22 moves relative to the second conductive frame 23 along the axial direction of the pen tube 1, the insertion rod 233 moves within the slot 223, and the spring deforms.

[0065] See Figures 3-5 To further simplify and lighten the overall structure of the stylus, a component receiving slot 25 is provided on the second conductive frame 23. The pressure sensor 4 is housed in the component receiving slot 25, and a portion of the first conductive frame 32 extends into the component receiving slot 25 and is connected to the pressure sensor 4. By accommodating the pressure sensor 4 through the component receiving slot 35, the space of the flat conductive frame 2 is effectively utilized. This improves the overall structural compactness while simplifying and lightening the overall structure of the stylus, solving the problem that existing stylus structures are relatively thick and heavy, taking up a lot of space when carried.

[0066] Specifically, the pen tube 1 has a first side and a second side in a cross-section perpendicular to its own axis. The first side is perpendicular to the second side, and the length of the first side is greater than the length of the second side. The second conductive frame 23 has a first surface and a second surface that are perpendicularly connected. The component receiving groove 25 is formed on the second surface and extends into the interior of the second conductive frame 33 along the width extension direction of the pen tube 1. This ensures that when the first conductive frame 22 is combined with the second conductive frame 23 by partially extending into the interior of the component receiving groove 25, the overall thickness of the second conductive frame 23 does not increase, thus solving the problem of the existing stylus structure being relatively thick and heavy. The component receiving groove 25 can extend into the interior of the second conductive frame 33 by a set distance along the width extension direction of the pen tube 1, and this set distance is less than the width of the pen tube 1.

[0067] More specifically, the component receiving groove 25 extends through the second conductive frame 23 along the thickness direction of the pen tube 1 to facilitate the installation of the first conductive frame 22 and components such as the pressure sensor 4.

[0068] Regarding the connection between the first conductive frame 22 and the second conductive frame 23 having a component receiving groove 25, in the embodiments of this application, the first conductive frame 22 further includes a first bent portion 224 and a second bent portion 225. The second bent portion 225 is located inside the component receiving groove 25 and is connected to the pressure sensor 4. The first frame 221 is located outside the component receiving groove 25 and is spaced apart from the second bent portion 225 along the length extension direction of the pen tube 1. The first bent portion 224 connects the first frame 221 and the second bent portion 225. This structure allows the first conductive frame 22 to provide pressure to the pressure sensor 4 through the second bent portion 225 when the pen tip 3 is subjected to external force and moves towards the pen tube 1, shortening the distance between the first conductive frame 22 and the second conductive frame 23. This allows the pressure sensor 4 to transmit the detected pressure value to the circuit board 11, enabling the circuit board 11 to control the line thickness when the pen tip 3 writes based on the detected pressure.

[0069] To further improve the cooperation between the pressure sensor 4 and the first conductive frame 22 and the second conductive frame 23, in an embodiment of this application, the pressure sensor 4 has a bent flexible circuit board 41. Part of the flexible circuit board 41 is located inside the component receiving groove 25, and another part of the flexible circuit board 41 passes through the first frame 221 and is connected to the circuit board 11. The portion of the flexible circuit board 41 that passes through the first frame 221 can be fitted with the first bending portion 224, so that the first bending portion 224 can guide and protect this portion of the flexible circuit board 41. See also... Figure 6 To obtain the tilt angle of the stylus and further improve its usability, in one embodiment, the stylus also includes a second electrode 5 disposed inside the pen tube 1 and housing a flat conductive frame 2. The second electrode 5 is electrically connected to the circuit board 11 and configured to emit a signal for determining the tilt angle of the stylus.

[0070] Understandably, a first voltage signal can be generated by the first electrode 31, and a second voltage signal can be generated by the second electrode 5. The circuit board 11 detects the ratio of the first voltage signal and the second voltage signal or the distance between them to determine the tilt of the stylus. For example, the greater the tilt of the stylus, the closer the ratio of the first voltage signal and the second voltage signal is to 1, and vice versa; the distance between the first voltage signal and the second voltage signal also increases with the increase of the tilt.

[0071] To further improve the working effect between the first electrode 31 and the second electrode 5, in one embodiment, a portion of the first electrode 31 is disposed inside the second electrode 5. This allows the second electrode 5 to act as an electromagnetic shield, isolating a portion of the first electrode 31 from the external environment. When external electromagnetic interference exists, these interference signals will be absorbed or reflected by the second electrode 5 and cannot directly affect the first electrode 31.

[0072] To facilitate the installation and replacement of the pen tip 3 and the flat conductive frame 2, in one embodiment, the pen tip 3 and the flat conductive frame 2 are detachably connected. Specifically, the pen tip 3 includes an insulated pen tip 32 and a first electrode 31. The first electrode 31 is inserted into the pen tip at one end along the axial direction of the pen tube 1, and the other end of the first electrode 31 is detachably connected to the flat conductive frame 2 along the axial direction of the pen tube 1. This structure allows for a detachable connection between the first electrode 31 and the flat conductive frame 2, eliminating the need for assembly personnel to perform complex welding, riveting, or other operations. It also allows for a detachable connection between the insulated pen tip 32 and the first electrode 31, enabling users to replace the insulated pen tip 32 as needed.

[0073] See Figure 5 and Figure 6 To ensure that the detachable connection does not affect the conductivity between the first electrode 31 and the flat conductive frame 2, in one embodiment, the flat conductive frame 2 has a flexible conductive element 24, and the pen tip 3 is detachably connected to the flexible conductive element 24. Specifically, the second conductive frame 23 is provided with a fixing groove, the flexible conductive element 24 is disposed in the fixing groove, and one end of the first electrode 31 is inserted into and fixed to the flexible conductive element 24.

[0074] Understandably, if the first electrode 31 is directly connected to the second conductive frame 23, gaps are likely to exist between them, affecting conductivity and connection stability. This application uses a flexible conductive element 24 to assist in the connection. The flexibility and high density of the flexible conductive element 24 effectively ensure conductivity and connection stability between the first electrode 31 and the flat conductive frame 2.

[0075] More specifically, in the embodiments of this application, the flexible conductive element 24 is conductive silicone. The good flexibility and elasticity of conductive silicone allow it to maintain stable conductivity during detachable connections. Even with repeated disassembly and reconnection, the conductive silicone will not lose its conductivity due to deformation, making it suitable for applications requiring frequent disassembly and reconnection between the pen tip 3 and the flat conductive frame 2.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A stylus, characterized in that, include: The pen tube (1) has a circuit board (11) inside; A flat conductive frame (2) is disposed inside the pen tube (1) and electrically connected to the circuit board (11); The pen tip (3) is located at one end of the pen tube (1) along its length extension direction. The pen tip (3) is provided with a first electrode (31), and the first electrode (31) is electrically connected to the circuit board (11) through the flat conductive frame (2).

2. The stylus according to claim 1, characterized in that, The stylus also includes a pressure sensor (4), which is disposed on the flat conductive frame (2) and electrically connected to the circuit board (11). The pressure sensor (4) is configured to give a signal to the circuit board (11) when the pen tip (3) moves along the axial direction of the pen tube (1).

3. The stylus according to claim 2, characterized in that, The flat conductive frame (2) includes an elastic conductive element (21), a first conductive frame body (22), and a second conductive frame body (23). The second conductive frame body (23) is slidably connected to the first conductive frame body (22). The first conductive frame body (22) is electrically connected to the circuit board (11). The elastic direction of the elastic conductive element (21) is parallel to the axial direction of the pen tube (1). One end of the elastic conductive element (21) is disposed on the first conductive frame body (22), and the other end of the elastic conductive element (21) is disposed on the second conductive frame body (23). The pen tip (3) is disposed on the second conductive frame body (23).

4. The stylus according to claim 3, characterized in that, The second conductive frame (23) is provided with a component receiving groove (25), and the pressure sensor (4) is housed in the component receiving groove (25). A portion of the first conductive frame (32) extends into the interior of the component receiving groove (25) and is connected to the pressure sensor (4).

5. The stylus according to claim 4, characterized in that, The pen tube (1) has a first side and a second side in a cross section perpendicular to its own axis. The first side is perpendicular to the second side, and the length of the first side is greater than the length of the second side. The second conductive frame (23) has a first surface and a second surface that are vertically connected. The first surface is parallel to the first side. The element receiving groove (25) is opened on the second surface and extends into the second conductive frame (23) along the width extension direction of the pen tube (1).

6. The stylus according to claim 5, characterized in that, The component receiving groove (25) extends through the second conductive frame (23) along the thickness extension direction of the pen tube (1).

7. The stylus according to claim 5, characterized in that, The first conductive frame (22) includes a first frame (221), a first bent portion (224), and a second bent portion (225). The second bent portion (225) is located inside the component receiving groove (25) and is connected to the pressure sensor (4). The first frame (221) is located outside the component receiving groove (25) and is spaced apart from the second bent portion (225) along the length extension direction of the pen tube (1). The first bent portion (224) connects the first frame (221) and the second bent portion (225).

8. The stylus according to claim 1, characterized in that, The pressure sensor (4) has a flexible circuit board (41) in a bent shape. Part of the flexible circuit board (41) is located inside the component receiving slot (25), and another part of the flexible circuit board (41) passes through the first frame (221) and is connected to the circuit board (11).

9. The stylus according to claim 1, characterized in that, The pen tip (3) is detachably connected to the flat conductive frame (2).

10. The stylus according to claim 1, characterized in that, The pen tube (1) has a flat structure.

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