Capacitance pen

Abstract

The invention discloses a capacitance pen, and relates to the technical field of active capacitance pens. The capacitance pen comprises a pen point, a PCB, a pressure sensing assembly and a pen body, wherein the pen point comprises a first magnetic attraction part and a first conductive part which are arranged at the end part; the pressure sensing assembly is in communication connection with the PCB; the pen body comprises a conductive part, the pressure sensing assembly is arranged at the end, away from the pen point, of the conductive part, the pen point can transmit pressure to the pressure sensing assembly through the conductive part, the conductive part is electrically connected with the PCB, and the end face, facing the pen point, of the conductive part is provided with a second magnetic attraction part and a second conductive part. The first magnetic attraction part abuts against the second magnetic attraction part so that the pen point can be connected with the pen body in a magnetic attraction mode, and the first conductive part abuts against the second conductive part so that the pen point can be electrically connected with the conductive piece. According to the capacitance pen, the pen point replacement efficiency is improved, the user experience is improved, the structure is simplified, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of active capacitive pens, and in particular to a capacitive stylus. Background Art

[0002] Capacitive pen is a pen made of conductive material with conductive properties, used to touch the capacitive screen to complete human-computer interaction. Capacitive pen is an auxiliary device that imitates the human body to complete human-computer interaction through conductive material. With the development of APP, the current capacitive pen is no longer a simple replacement for finger operation. More and more professionals have tried to use active capacitive pens to work on mobile devices.

[0003] It is understandable that after long-term use, the pen tip of a capacitive stylus pen is easily worn out, which affects the user experience. Or different pen tips are required for different purposes. Usually, the pen tip is connected to the pen body through a thread to facilitate user replacement of the pen tip. However, this structure has low assembly and disassembly efficiency and requires a separate design of a structure to electrically connect the pen tip to the PCB board, which increases the cost. Summary of the invention

[0004] The purpose of the present invention is to provide a capacitive stylus, which improves the efficiency of replacing the pen tip, enhances the user experience, simplifies the structure and reduces the cost.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A capacitive stylus pen, comprising:

[0007] The pen tip comprises a first magnetic attraction portion and a first conductive portion arranged at an end portion;

[0008] A PCB board and a pressure sensing component, wherein the pressure sensing component is communicatively connected with the PCB board;

[0009] The pen body includes a conductive part, the pressure sensing component is arranged at an end of the conductive part away from the pen tip, the pen tip can transmit pressure to the pressure sensing component through the conductive part, the conductive part is electrically connected to the PCB board, the end surface of the conductive part facing the pen tip has a second magnetic attraction part and a second conductive part, the first magnetic attraction part abuts against the second magnetic attraction part to magnetically connect the pen tip to the pen body, and the first conductive part abuts against the second conductive part to electrically connect the pen tip to the conductive part.

[0010] As an optional solution for the above-mentioned capacitive pen, the pen tip includes a connecting member and a first magnetic member connected to each other, the first conductive part is arranged on the end face of the connecting member, the first magnetic member forms the first magnetic part, a second magnetic member is arranged on one end of the conductive member facing the pen tip, the second magnetic member forms the second magnetic part, and the end face of the conductive member facing the connecting member forms the second conductive part.

[0011] As an optional solution of the above-mentioned capacitive stylus, the connecting member is made of a conductive non-ferromagnetic material.

[0012] As an optional solution of the above-mentioned capacitive stylus, the connecting member includes a connecting end, the connecting end is provided with a first connecting groove, the first magnetic member is arranged in the first connecting groove, the first magnetic member is flush with an end surface of the connecting member facing the conductive member, and the conductive member abuts against the end surface of the connecting end; and / or,

[0013] The conductive member is provided with a second connecting groove at one end facing the pen tip, the second magnetic member is arranged in the second connecting groove, the second magnetic member is flush with the end surface of the conductive member facing the pen tip, and the connecting member abuts against the end surface of the conductive member facing the pen tip.

[0014] As an optional solution for the above-mentioned capacitive pen, the pen body also includes a conductive gasket, the first magnetic attraction part and the second magnetic attraction part are respectively located on both sides of the conductive gasket and are magnetically fixed to clamp the conductive gasket, and the first conductive part and the second conductive part are abutted against each other through the conductive gasket.

[0015] As an optional solution of the above-mentioned capacitive stylus, the conductive pad is made of a conductive elastic material.

[0016] As an optional solution of the above-mentioned capacitive pen, the pen head also includes an insulating sleeve, the connecting piece includes a writing end, and the insulating sleeve is arranged on the writing end.

[0017] As an optional solution of the above-mentioned capacitive stylus, the pen body further includes an elastic member, and the elastic member is configured to drive the conductive member to press against the pressure sensing component.

[0018] As an optional solution of the above-mentioned capacitive stylus, the elastic member is made of a conductive material, and the elastic member is electrically connected to the PCB board to conduct the conductive member and the PCB board.

[0019] As an optional solution for the above-mentioned capacitive pen, the pen body includes a sleeve, the sleeve includes a supporting sleeve and a positioning sleeve, the positioning sleeve is movably arranged in the supporting sleeve, the conductive member is arranged in the positioning sleeve, and the pen head is inserted into the supporting sleeve and the positioning sleeve.

[0020] As an optional solution for the above-mentioned capacitive pen, the pen body also includes a buffer ring, which is arranged between the supporting sleeve and the positioning sleeve, and the buffer ring is configured to elastically abut the supporting sleeve and the positioning sleeve along the length direction of the capacitive pen to limit the supporting sleeve and the positioning sleeve.

[0021] Beneficial effects of the present invention:

[0022] The present invention provides a capacitive pen. The first magnetic attraction part of the pen tip of the capacitive pen abuts against the second magnetic attraction part of the conductive member, and the detachable function between the pen tip and the pen body is realized by magnetic attraction, which is convenient for users to replace the pen tip and improves the replacement efficiency. Moreover, the first conductive part of the pen tip and the second conductive part of the conductive member are connected by abutment, so that the pen tip can be electrically connected to the PCB board, and there is no need to separately set a component in the pen body that is electrically connected to the pen tip, thereby simplifying the structure and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a capacitive stylus provided by the present invention;

[0024] Figure 2 is an exploded view of the pen tip and pen core assembly provided by the present invention;

[0025] Figure 3 is a cross-sectional view of a capacitive stylus provided by the present invention;

[0026] Figure 4 yes Figure 3 A partial enlarged view of the middle A;

[0027] Figure 5 It is a structural schematic diagram of the elastic member provided by the present invention.

[0028] In the figure:

[0029] 1. Pen tip; 11. Connecting piece; 111. Writing end; 112. Connecting end; 12. First magnetic attraction piece; 13. Insulating sleeve;

[0030] 2. Pen core assembly; 21. Sleeve; 211. Support sleeve; 212. Positioning sleeve; 2121. First limiting truncated cone; 213. Buffer collar; 22. Conductive member; 221. Positioning groove; 222. Second limiting truncated cone; 23. Second magnetic member; 24. Conductive gasket; 25. Pressure sensor; 26. Elastic member; 27. Ejector rod; 28. Lead wire;

[0031] 3. Pen assembly; 31. Shell; 311. Fixing surface; 312. Charging port; 32. PCB board; 33. Side key; 34. Fixing magnet;

[0032] 4. Battery. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0035] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] This embodiment provides a capacitive stylus pen. Figure 1 to Figure 3As shown, the capacitive pen includes a pen tip 1 and a pen body, wherein the pen body is the main structure of the capacitive pen, the circuit structure, battery and other structures of the capacitive pen are arranged in the pen body, and the pen tip 1 is used to abut the capacitive screen to interact with the capacitive screen.

[0039] Generally speaking, the refill assembly 2 and the pen body assembly 3, the pen body assembly 3 includes a shell 31 and a PCB board 32 arranged in the shell 31, one end of the shell 31 is provided with a receiving groove with an opening, the refill assembly 2 is arranged in the receiving groove, the pen head 1 extends into the receiving groove through the opening and is fixed to the refill assembly 2.

[0040] In this embodiment, the capacitive stylus is an active capacitive stylus, so the pen head 1 is electrically connected to the PCB board 32, so that the capacitive stylus can interact with the capacitive screen of the electronic device. At the same time, in order to improve functionality, the housing 31 also includes a side key 33, which is arranged in the housing 31 and is communicatively connected to the PCB board 32. The user can issue instructions by pressing the side key 33 a certain number of times or with a certain force, so as to improve the interaction experience with the electronic device.

[0041] like Figure 3 As shown, the pen assembly 3 also includes a fixed magnet 34, which is arranged in the housing 31. The fixed magnet 34 can attract each other with the magnet at the position where the capacitive pen is placed on the electronic device, so that the capacitive pen is fixed to the electronic device, which is convenient for use and can also prevent the capacitive pen from being lost. It is worth noting that the housing 31 is provided with a fixed surface 311, and the fixed magnet 34 is arranged on the back side of the fixed surface 311 or penetrates the fixed surface 311. The fixed surface 311 can ensure that there is enough contact area between the capacitive pen and the electronic device, so that the stability of the capacitive pen is improved when the capacitive pen and the electronic device attract each other.

[0042] In order to actively interact with electronic devices, the capacitive stylus further includes a battery 4, which is disposed in the housing 31 and electrically connected to the PCB board 32. It is worth noting that the battery 4 is a secondary battery 4, and the service life of the capacitive stylus can be greatly extended by charging the secondary battery 4.

[0043] Specifically, the housing 31 is provided with a charging port 312, and a charging connector is provided in the charging port 312, and the charging connector can charge the secondary battery 4 through a charging cable. In some embodiments, a charging coil is provided inside the housing 31, and the charging coil is provided on the back side of the fixing surface 311 and is electrically connected to the secondary battery 4. When the capacitive pen is adsorbed on the electronic device, the charging coil can cooperate with the corresponding coil provided in the electronic device to charge the secondary battery 4.

[0044] It is worth noting that the capacitive stylus pen is prone to wear after long-term use, and the pen tip 1 is prone to wear and tear, which affects the user experience, or different pen tips 1 are required for different uses, and the pen tip 1 is usually connected to the pen body through a thread to facilitate users to replace the pen tip 1. However, this structure has low disassembly and assembly efficiency, and requires a separate design of a structure for electrically connecting the pen tip 1 to the PCB board 32, which increases the cost.

[0045] like Figure 1 to Figure 4 As shown, in order to solve the above problems, the refill assembly 2 of the capacitive pen provided in this embodiment includes a conductive part 22, which is electrically connected to the PCB board 32, and the pen tip 1 includes a first magnetic part and a first conductive part arranged at the end, and the end surface of the conductive part 22 facing the pen tip 1 has a second magnetic part and a second conductive part, the first magnetic part abuts against the second magnetic part to magnetically connect the pen tip 1 to the pen body, and the first conductive part abuts against the second conductive part to electrically connect the pen tip 1 to the conductive part 22.

[0046] The first magnetic attraction part of the pen tip 1 of the capacitive stylus pen is in contact with the second magnetic attraction part of the conductive member 22, and the detachable function between the pen tip and the pen body is realized by magnetic attraction, which is convenient for users to replace the pen tip 1 and improves the replacement efficiency. Moreover, the first conductive part of the pen tip 1 and the second conductive part of the conductive member 22 are connected by abutment, so that the pen tip 1 can be electrically connected to the PCB board 32, and there is no need to set a separate component in the pen body to be electrically connected to the pen tip 1, which simplifies the structure and reduces the cost.

[0047] In this embodiment, the pen tip 1 includes a connecting member 11 and a first magnetic member 12 connected to each other. The first conductive part is arranged on the end face of the connecting member 11, and the first magnetic member 12 forms a first magnetic part. A second magnetic member 23 is arranged on one end of the conductive member 22 facing the pen tip 1, and the second magnetic member 23 forms a second magnetic part. The conductive member 22 forms a second conductive part on the end face of the connecting member 11.

[0048] Among them, the first magnetic attraction member 12 and the second magnetic attraction member 23 are both magnets, and the two can detachably connect the conductive member 22 and the connecting member 11 through magnetic attraction. The structure is simple, and there is no need to limit the materials of the conductive member 22 and the connecting member 11, and the flexibility is high.

[0049] In the actual use of the capacitive stylus, when the pen tip 1 is magnetized by the second magnetic member 23, it is easy to absorb dust or debris, affecting the user experience. To solve this problem, the connecting member 11 is made of a conductive non-ferromagnetic material to ensure that the connecting member 11 will not be magnetized by the first magnetic member 12 or the second magnetic member 23, and will not absorb dust or debris, thereby improving the user experience.

[0050] Specifically, the conductive non-ferromagnetic material of the connector 11 can be some metals that cannot be magnetized, such as copper, aluminum, austenitic stainless steel, etc., or non-metals, such as graphite. The material of the conductive member 22 only needs to be conductive, and can be either metal or conductive non-metal.

[0051] The connecting member 11 has a writing end 111 and a connecting end 112 . The writing end 111 is the end of the connecting member 11 away from the refill assembly 2 , and the connecting end 112 is the end facing the refill assembly 2 . The first magnetic member 12 is disposed at the connecting end 112 .

[0052] In this embodiment, in order to keep the first magnetic member 12 stable, the connection end 112 is provided with a first connection groove, the first magnetic member 12 is disposed in the first connection groove, the first magnetic member 12 is flush with the end surface of the connection member 11 facing the conductive member 22, and the conductive member 22 abuts against the end surface of the connection end 112. This structure enables the first magnetic member 12 to be embedded in the connection member 11, and prevents the first magnetic member 12 from affecting the conductive pad 24 from fitting to the connection end 112 and causing poor conduction.

[0053] In some embodiments, the end of the conductive member 22 facing the pen tip 1 is provided with a second connection groove, the second magnetic member 23 is disposed in the second connection groove, the second magnetic member 23 is flush with the end surface of the conductive member 22 facing the pen tip 1, and the connector 11 abuts against the end surface of the conductive member 22 facing the pen tip 1. Similarly, by providing the second connection groove in the conductive member 22, the second magnetic member 23 can be embedded in the conductive member 22, thereby preventing the second magnetic member 23 from affecting the conductive gasket 24 from fitting the connection end 112 and causing poor conduction.

[0054] In this embodiment, the refill assembly 2 further includes a conductive gasket 24, the first magnetic attraction portion and the second magnetic attraction portion are respectively located on both sides of the conductive gasket 24 and are magnetically fixed to clamp the conductive gasket 24, and the first conductive portion and the second conductive portion are in contact with each other through the conductive gasket 24. The provision of the conductive gasket 24 can ensure the conduction between the first conductive portion and the second conductive portion, improve the reliability of the electrical connection between the first conductive portion and the second conductive portion, and avoid the presence of a gap between the first conductive portion and the second conductive portion when the first magnetic attraction portion and the second magnetic attraction portion are in contact, thereby affecting the connectivity.

[0055] Furthermore, the conductive gasket 24 is made of a conductive elastic material, so that the conductive gasket 24 can be elastically deformed when squeezed by the first conductive part and the second conductive part, so that there is a sufficient contact area between the conductive gasket 24 and the first conductive part and the second conductive part to ensure the reliability of the electrical connection between the first conductive part and the second conductive part. For example, the material of the conductive gasket 24 can be conductive silicone.

[0056] In order to ensure that the conductive gasket 24 can be in good contact with the connector 11 and the conductive member 22, a connection hole is provided in the conductive gasket 24, and the first magnetic member 12 or the second magnetic member 23 is magnetically abutted through the connection hole, and the connector 11 and the conductive member 22 squeeze the conductive gasket 24. This structure enables the first magnetic member 12 and the second magnetic member 23 to be directly magnetically abutted, ensuring the stability of the connection between the connector 11 and the conductive member 22, and the conductive gasket 24 can be in contact with the connector 11 and the conductive member 22, wherein it is only necessary to ensure that when the first magnetic member 12 and the second magnetic member 23 are abutted, the gap between the connector 11 and the conductive member 22 is less than or equal to the thickness of the conductive gasket 24.

[0057] In some embodiments, the conductive gasket 24 does not have a connection hole, but is a complete sheet. In order to ensure that the conductive gasket 24 can be in good contact with the connector 11 and the conductive member 22, the first magnetic member 12 and the second magnetic member 23 are respectively located on both sides of the conductive gasket 24 and are magnetically fixed to clamp the conductive gasket 24, and the connector 11 and the conductive member 22 squeeze the conductive gasket 24. At this time, the first magnetic member 12 and the second magnetic member 23 are magnetically fixed across the conductive gasket 24. Since the center of the conductive gasket 24 is squeezed by the first magnetic member 12 and the second magnetic member 23, the outer peripheral thickness of the conductive gasket 24 increases, which facilitates the conductive gasket 24 to abut against the connector 11 and the conductive member 22.

[0058] like Figure 2 As shown, a positioning groove 221 is formed at one end of the conductive member 22 facing the pen tip 1, and the connecting member 11 is inserted into the positioning groove 221 and radially positioned by the side wall of the positioning groove 221. When the user installs the pen tip 1, the connecting member 11 of the pen tip 1 can be inserted into the positioning groove 221 and radially positioned by the positioning groove 221, thereby ensuring the installation accuracy of the pen tip 1, and the positioning groove 221 can also ensure that the axis of the pen tip 1 coincides with the axis of the capacitive stylus, thereby improving the use accuracy of the capacitive stylus and the user experience.

[0059] like Figure 2 and Figure 4 As shown, the pen tip 1 also includes an insulating sleeve 13, which is sleeved on the writing end 111. It is understandable that the pen tip 1 needs to directly contact or even slide with the capacitive screen, but it is also necessary to ensure that the conductive part of the pen tip 1 does not contact the capacitive screen, so the writing end 111 of the connector 11 needs to be sleeved with the insulating sleeve 13.

[0060] It is worth noting that the insulating sleeve 13 can be hard or elastic. The hard insulating sleeve 13 can make the writing feel of the capacitive pen close to the writing pen used in daily life (such as a gel pen, a fountain pen, etc.), while the elastic insulating sleeve 13 can protect the capacitive screen and prevent the pen head 1 from scratching the capacitive screen, and can also improve the feel when using the capacitive pen.

[0061] In order to prevent the insulating sleeve 13 from falling off the connecting piece 11, a plurality of annular grooves may be arranged at intervals along the axial direction on the outer periphery of the connecting piece 11, and annular protrusions corresponding to the plurality of annular grooves are arranged on the inner wall of the insulating sleeve 13, and each annular protrusion is inserted into the corresponding annular groove, so that the insulating sleeve 13 is firmly covered on the writing end 111.

[0062] In this embodiment, the writing end 111 of the connecting member 11 is provided with a writing head, and the writing head is a pointed structure, that is, the radius of the writing head gradually decreases in the direction away from the refill assembly 2, and the maximum radius of the writing head is greater than the radius of the rest of the connecting member 11, and the insulating sleeve 13 is sleeved on the writing head and will not fall off.

[0063] It is understandable that when the capacitive pen writes on the capacitive screen, the thickness of the brush needs to be fed back according to the pressure of the capacitive pen on the capacitive screen to optimize the user experience. Figure 2 and Figure 4 As shown, to achieve this purpose, the pen core assembly 2 also includes a pressure sensing assembly, which is arranged at the end of the conductive member 22 away from the pen tip 1. When the user uses the capacitive pen to write on the capacitive screen, the pen tip 1 will press the conductive member 22 against the pressure sensor 25 to transfer the pressure to the pressure sensing assembly through the conductive member 22. According to the pressure value fed back by the pressure sensing assembly, the capacitive pen can detect the pressure of the user pressing the capacitive pen in real time, so that the capacitive screen can provide correct thickness feedback according to the pressure value, so that the thickness of the lines on the capacitive screen is associated with the strength of the hand used, thereby improving the use accuracy of the capacitive pen and optimizing the user experience.

[0064] In this embodiment, the pressure sensing assembly includes a pressure sensor 25 .

[0065] Furthermore, the refill assembly 2 further includes an elastic member 26, which drives the conductive member 22 to press against the pressure sensor 25. On the one hand, the elastic member 26 can make the refill assembly 2 and the pen head 1 as a whole in a relatively stable state, preventing the relatively movable parts from giving the user a loose feeling, and on the other hand, the elastic member 26 can also make an initial pressure between the conductive member 22 and the pressure sensor 25, at which time the pressure provided by the user when writing can be linearly increased, avoiding the gap between the conductive member 22 and the pressure sensor 25, resulting in an inaccurate proportional relationship between the pressure value detected by the pressure sensor 25 and the pressing force when the user writes.

[0066] In this embodiment, the elastic member 26 is a spring, which is made of metal and has conductivity, so the PCB board 32 and the conductive member 22 can be electrically connected by the spring. Figure 5As shown, the electrical connection between the elastic member 26 and the PCB board 32 can be achieved by providing a lead 28. Since the spring and the lead 28 do not need to be disassembled, the structure can be simplified and the cost can be reduced.

[0067] Furthermore, the lead 28 is integrally formed with the elastic member 26, that is, the end of the elastic member 26 extends toward the pen assembly 3, thereby connecting with the PCB board 32, which simplifies the structure and ensures the reliability of the connection.

[0068] In order to prevent the conductive member 22 from crushing the pressure sensor 25 due to being too hard, a push rod 27 is protruded from one end of the conductive member 22 facing the pressure sensor 25, and the push rod 27 is configured to abut the pressure sensor 25. The push rod 27 is made of plastic, which has a certain wear resistance and can prevent damage to the pressure sensor 25. Specifically, the push rod 27 is made of POM (Polyoxymethylene, polyoxymethylene resin) material, which has good wear resistance and is easy to process. The end of the push rod 27 abutting the pressure sensor 25 can be processed into an arc structure to eliminate sharp corners and protect the pressure sensor 25.

[0069] like Figure 2 and Figure 4 As shown, the sleeve 21 includes a supporting sleeve 211 and a positioning sleeve 212. The positioning sleeve 212 is movably arranged in the supporting sleeve 211. The supporting sleeve 211 is used to be fixed with the outer shell 31 to ensure the stability of the position of the refill assembly 2, and the positioning sleeve 212 can move relative to the supporting sleeve 211, which can not only reduce the requirements for processing accuracy, improve production efficiency and reduce costs, but also facilitate assembly and avoid jamming.

[0070] In this embodiment, a first limiting cone 2121 is protruded from the inner wall of the positioning sleeve 212, a second limiting cone 222 is protruded from the outer wall of the conductive member 22, a spring is sleeved on the outer wall of the conductive member 22, one end of the spring abuts against the first limiting cone 2121, and the other end of the spring abuts against the second limiting cone 222.

[0071] It can be understood that the elastic member 26 can not only fill the gap between the conductive member 22 and the pressure sensor 25, but also ensure stable abutment between the positioning sleeve 212 and the supporting sleeve 211, and ensure that there is no relative movement between the positioning sleeve 212 and the supporting sleeve 211 along the axial direction of the capacitive pen when the capacitive pen is used normally.

[0072] It is understandable that when a user uses a capacitive stylus to write, the connector 11 will generate a radial squeezing force on the support sleeve 211, which will cause the support sleeve 211 to bend or tilt, thereby causing the support sleeve 211 to be unable to effectively support the pen head 1, affecting the writing feel. Figure 2 and Figure 4 As shown, in order to solve the above problem, the sleeve 21 also includes a buffer ring 213, which is arranged between the supporting sleeve 211 and the positioning sleeve 212. The buffer ring 213 is configured to elastically abut the supporting sleeve 211 and the positioning sleeve 212 along the length direction of the capacitive pen to limit the supporting sleeve 211 and the positioning sleeve 212.

[0073] When the support sleeve 211 is subjected to the squeezing force of the pen tip 1, the support sleeve 211 is partially bent or tilted, and along the axial direction of the capacitive pen, the distance between the support sleeve 211 and the positioning sleeve 212 on one side of the pen tip 1 is reduced. At this time, the buffer ring 213 can buffer the bending of the support sleeve 211, which can not only reduce the bending degree of the support sleeve 211, but also provide a certain resilience, thereby providing a certain damping feeling and improving the writing feel.

[0074] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A capacitive stylus pen, characterized in that: include: A pen tip (1) comprises a first magnetic attraction portion and a first conductive portion arranged at an end portion; A PCB board (32) and a pressure sensing component, wherein the pressure sensing component is communicatively connected to the PCB board (32); The pen body comprises a conductive part (22), the pressure sensing component is arranged at an end of the conductive part (22) away from the pen tip (1), the pen tip (1) can transmit pressure to the pressure sensing component through the conductive part (22), the conductive part (22) is electrically connected to the PCB board (32), the end surface of the conductive part (22) facing the pen tip (1) has a second magnetic attraction part and a second conductive part, the first magnetic attraction part abuts against the second magnetic attraction part so that the pen tip (1) is magnetically connected to the pen body, and the first conductive part abuts against the second conductive part so that the pen tip (1) is electrically connected to the conductive part (22).

2. The capacitive stylus pen according to claim 1, characterized in that: The pen tip (1) comprises a connecting member (11) and a first magnetic member (12) which are connected to each other. The first conductive part is arranged on the end surface of the connecting member (11), and the first magnetic member (12) forms the first magnetic member. The conductive member (22) is provided with a second magnetic member (23) at one end facing the pen tip (1), and the second magnetic member (23) forms the second magnetic member. The conductive member (22) forms the second conductive part at the end surface facing the connecting member (11).

3. The capacitive stylus pen according to claim 2, characterized in that: The connecting piece (11) is made of a conductive non-ferromagnetic material.

4. The capacitive stylus pen according to claim 2, characterized in that: The connecting member (11) comprises a connecting end (112), the connecting end (112) is provided with a first connecting groove, the first magnetic member (12) is arranged in the first connecting groove, the end surface of the first magnetic member (12) and an end of the connecting member (11) facing the conductive member (22) are flush, and the conductive member (22) abuts against the end surface of the connecting end (112); and / or, The conductive member (22) is provided with a second connection groove at one end facing the pen tip (1), and the second magnetic member (23) is arranged in the second connection groove. The second magnetic member (23) is flush with the end surface of the conductive member (22) facing the pen tip (1), and the connecting member (11) is in contact with the end surface of the conductive member (22) facing the pen tip (1).

5. The capacitive stylus pen according to claim 1, characterized in that: The pen body also includes a conductive gasket (24), the first magnetic attraction portion and the second magnetic attraction portion are respectively located on both sides of the conductive gasket (24) and are magnetically fixed to clamp the conductive gasket (24), and the first conductive portion and the second conductive portion are in contact with each other through the conductive gasket (24).

6. The capacitive stylus pen according to claim 5, characterized in that: The conductive gasket (24) is made of conductive elastic material.

7. The capacitive stylus pen according to claim 2, characterized in that: The pen tip (1) further comprises an insulating sleeve (13); the connecting member (11) comprises a writing end (111); and the insulating sleeve (13) is sleeved on the writing end (111).

8. The capacitive stylus pen according to any one of claims 1 to 7, characterized in that: The pen body also includes an elastic member (26), and the elastic member (26) is configured to drive the conductive member (22) to press against the pressure sensing component.

9. The capacitive stylus pen according to claim 8, characterized in that: The elastic member (26) is made of a conductive material, and the elastic member (26) is electrically connected to the PCB board (32) to conduct the conductive member (22) and the PCB board (32).

10. The capacitive stylus pen according to any one of claims 1 to 7, characterized in that: The pen body comprises a sleeve (21), the sleeve (21) comprises a supporting sleeve (211) and a positioning sleeve (212), the positioning sleeve (212) is movably arranged in the supporting sleeve (211), the conductive member (22) is arranged in the positioning sleeve (212), and the pen head (1) is inserted into the supporting sleeve (211) and the positioning sleeve (212).

11. The capacitive stylus pen according to claim 10, characterized in that: The pen body further comprises a buffer ring (213), wherein the buffer ring (213) is arranged between the support sleeve (211) and the positioning sleeve (212), and the buffer ring (213) is configured to elastically abut against the support sleeve (211) and the positioning sleeve (212) along the length direction of the capacitive stylus so as to limit the support sleeve (211) and the positioning sleeve (212).

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