Capacitance pen with magnetic attraction opening and closing structure

Abstract

The capacitance pen with the magnetic attraction opening and closing structure comprises a pen tube assembly and a pen cap assembly, the pen cap assembly is located at the rear end of the pen tube assembly, the pen tube assembly comprises a pen tube and a support rear cover, a first containing cavity is formed in the pen tube, the support rear cover is fixed in the first containing cavity, and a first magnetic piece is arranged on the support rear cover; the pen cap assembly comprises a pen cap and a pen cap support, the pen cap support is fixed in the pen cap, a second magnetic part is arranged on the pen cap support, and the pen cap support is connected to the support rear cover in a sliding mode so that the pen cap can move between an unfolding position and a folding position relative to the pen tube in the axial direction; the pen cap is farther away from the pen tube in the unfolding position than in the folding position, and when the pen cap is in the unfolding position, the first magnetic part and the second magnetic part act to provide magnetic force for driving the pen cap to be away from the pen tube. According to the capacitance pen with the magnetic attraction opening and closing structure, the pen cap is limited when the pen cap is unfolded in a sliding mode relative to the pen tube through the magnetic structure, the sliding smoothness of the pen cap can be improved, and the service life of the pen cap can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of capacitive pen technology, and in particular to a capacitive pen with a magnetic opening and closing structure. Background Technology

[0002] With the rapid development of technology, capacitive touchscreen devices such as mobile phones, tablets, and computers are becoming increasingly widespread in daily life. Consequently, the demand for capacitive pens, which enable writing on capacitive screens, is also rising. A capacitive pen is a pen made from conductive materials that possess conductive properties, used to touch capacitive screens to complete human-computer interaction. It's an auxiliary device that uses conductive materials to mimic the human body for human-computer interaction. The emergence of capacitive pens has provided people with greater convenience, allowing them to write freely on capacitive screens like ordinary pens. However, in existing technologies, the conventional mechanical latching structure is prone to breakage and damage after prolonged use or drops, which is detrimental to extending the lifespan of the sliding pen cap. Utility Model Content

[0003] Therefore, it is necessary to provide a capacitive pen with a magnetic opening and closing structure. The magnetic structure is used to limit the pen cap when it slides out relative to the pen tube, eliminating the need for a mechanical locking structure. This can improve the smoothness of the pen cap sliding and extend its service life.

[0004] A capacitive pen with a magnetic opening and closing structure includes a pen tube assembly and a pen cap assembly. The pen cap assembly is located at the rear end of the pen tube assembly. The pen tube assembly includes a pen tube and a support back cover. A first receiving cavity is formed in the pen tube. The support back cover is fixed in the first receiving cavity. A first magnetic element is provided on the support back cover.

[0005] The pen cap assembly includes a pen cap and a pen cap bracket. The pen cap bracket is fixed in the pen cap and has a second magnetic element. The pen cap bracket is slidably connected to the rear cover of the bracket so that the pen cap can move axially relative to the pen tube between an extended position and a retracted position. The pen cap is located further away from the pen tube in the extended position than in the retracted position. When the pen cap is in the extended position, the first magnetic element and the second magnetic element act to provide a magnetic force that drives the pen cap away from the pen tube.

[0006] In the capacitive pen with a magnetic opening and closing structure provided in this application, when the pen cap is in the unfolded position, the first magnetic component and the second magnetic component are aligned in a straight line along the radial direction of the pen, and a magnetic attraction is generated between them. Utilizing the principle of magnetic attraction and alignment, the pen cap assembly can be positioned in the open state and cannot be actively reset. When the pen cap is in the closed position, the second magnetic component moves towards the side closer to the pen tip assembly, and the first magnetic component is aligned in a straight line with the connector in the radial direction of the pen. At this time, the second magnetic component can attract the connector, and the pen cap assembly cannot be actively opened. The magnetic structure is used to limit the pen cap when it slides open relative to the pen tube, eliminating the need for a mechanical locking structure. This improves the smoothness of the pen cap's sliding and extends its service life.

[0007] In one embodiment, the back cover of the bracket is provided with a first mounting groove, and the first magnetic element is fixed in the first mounting groove; a guide groove is formed between the back cover of the bracket and the pen tube, the guide groove extends along the axial direction, the pen cap bracket includes an extension portion, the extension portion is slidably connected in the guide groove, the extension portion is provided with a second mounting groove, and the second magnetic element is fixed in the second mounting groove.

[0008] In one embodiment, the opening direction of the first mounting groove is perpendicular to or opposite to the opening direction of the second mounting groove.

[0009] In one embodiment, a battery is provided in the first receiving cavity, and a terminal block is provided on the back cover of the bracket. The terminal block is electrically connected to the battery. Both the battery and the terminal block are located on the side of the first magnetic component away from the pen cap. The terminal block is exposed on the outer surface of the pen tube. When the pen cap is in the retracted position, the pen cap covers the terminal block. When the pen cap is in the unfolded position, a gap is formed between the pen cap and the pen tube, and the terminal block is exposed in the gap.

[0010] In one embodiment, the connector has a ferromagnetic material structure, and when the pen cap is in the retracted position, the second magnetic element is opposite to the connector in the radial direction of the pen tube.

[0011] In one embodiment, the pen tube has a clearance groove along the axial direction at one end near the pen cap, the terminal block is exposed below the clearance groove, and the pen cap has a clip; when the pen cap is in the closed position, the clip is located above the clearance groove to cover the terminal block; when the pen cap is in the unfolded position, the clip is away from the clearance groove to expose the terminal block.

[0012] In one embodiment, the first receiving cavity is provided with a motherboard, a wireless charging component, a pen tip component, and a vibration component. The pen tip component includes a transmitter located at the front end of the pen tube. The battery is electrically connected to the transmitter, the vibration component, and the wireless charging component through the motherboard.

[0013] In one embodiment, the pen tube assembly includes a main support fixed in the first receiving cavity, a support rear cover fixed to one end of the main support near the pen cap assembly, a first limiting member on the main support, and a second limiting member on the pen cap. When the pen cap support moves away from the support rear cover along the axial direction so that the pen cap is in the unfolded position, the first limiting member and the second limiting member abut against each other to prevent the pen cap from detaching from the main support.

[0014] In one embodiment, the first limiting member includes a limiting post disposed on the main support, and the second limiting member includes a sliding groove formed on the pen cap. The limiting post is slidably connected in the sliding groove, and when the pen cap is in the unfolded position, the limiting post abuts against the end of the sliding groove.

[0015] In one embodiment, the pen cap further includes a light guide assembly and a button. A second receiving cavity is formed in the pen cap, and a through hole is formed at one end away from the pen tube assembly. The pen cap support is disposed in the second receiving cavity. The light guide assembly includes a light-emitting element and a light guide element. The light-emitting element and the light guide element are disposed at one end of the pen cap support near the through hole. The light guide element is clamped between the pen cap support and the pen cap, and the light guide element extends into the through hole to be exposed on the outer surface of the pen cap. The light guide element is axially aligned with the light-emitting element and the button. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 A schematic diagram of a capacitive pen with a magnetic opening and closing structure provided in an embodiment of this application;

[0018] Figure 2 A schematic diagram of a capacitive pen with a magnetic opening and closing structure provided in an embodiment of this application;

[0019] Figure 3 An exploded view of a capacitive pen with a magnetic opening and closing structure provided in an embodiment of this application;

[0020] Figure 4 A schematic diagram of the structure of the back cover of the holder, the first magnetic component, and the second magnetic component of a capacitive pen with a magnetic opening and closing structure provided in an embodiment of this application;

[0021] Figure 5 A schematic diagram of the cap holder of a capacitive pen with a magnetic opening and closing structure provided in an embodiment of this application;

[0022] Figure 6 A schematic diagram of a portion of the structure of a capacitive pen with a magnetic opening and closing mechanism provided in an embodiment of this application.

[0023] Figure 7 A cross-sectional view of a capacitive pen with a magnetic opening and closing structure provided in an embodiment of this application;

[0024] Figure 8 for Figure 7 Enlarged view of the area indicated by the dashed line.

[0025] Reference numerals: Capacitive pen 10 with magnetic opening and closing structure; Pen tube assembly 20; Pen tube 21; First receiving cavity 211; Battery 2111; Main board 2112; Wireless charging assembly 2113; Pen tip assembly 2114; Transmitter 2114a; Vibration assembly 2115; Clearance groove 212; Support back cover 22; First magnetic element 221; First mounting groove 222; Terminal block 223; Main support 23; First limiting element 231; Pen cap assembly 30; Pen cap 31; Second limiting element 311; Second receiving cavity 312; Through hole 3121; Clip 313; Pen cap support 32; Second magnetic element 321; Extension 322; Second mounting groove 3221; Light guide assembly 40; Light emitting element 41; Light guide element 42 Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model 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 utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 utility model.

[0028] In this utility model, unless otherwise explicitly 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through 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. "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.

[0030] With the rapid development of technology, capacitive touchscreen devices such as mobile phones, tablets, and computers are becoming increasingly widespread in daily life. Consequently, the demand for capacitive pens, which enable writing on capacitive screens, is also rising. A capacitive pen is a pen made from conductive materials that possess conductive properties, used to touch capacitive screens to complete human-computer interaction. It's an auxiliary device that uses conductive materials to mimic the human body for human-computer interaction. The emergence of capacitive pens has provided people with greater convenience, allowing them to write freely on capacitive screens like ordinary pens. However, in existing technologies, the conventional mechanical latching structure is prone to breakage and damage after prolonged use or drops, which is detrimental to extending the lifespan of the sliding pen cap.

[0031] refer to Figures 1 to 8To address the aforementioned issues, this application provides a capacitive pen 10 with a magnetic opening and closing structure, comprising a pen tube assembly 20 and a pen cap assembly 30. The pen cap assembly 30 is located at the rear end of the pen tube assembly 20. The pen tube assembly 20 includes a pen tube 21 and a support rear cover 22. A first receiving cavity 211 is formed in the pen tube 21, and the support rear cover 22 is fixed in the first receiving cavity 211. A first magnetic element 221 is provided on the support rear cover 22. The pen cap assembly 30 includes a pen cap 31 and a pen cap 30. The pen cap bracket 32 ​​is fixed in the pen cap 31. The pen cap bracket 32 ​​is provided with a second magnetic element 321. The pen cap bracket 32 ​​is slidably connected to the back cover 22 of the bracket so that the pen cap 31 can move axially relative to the pen tube 21 between the unfolded position and the retracted position. The pen cap 31 is further away from the pen tube 21 in the unfolded position than in the retracted position. When the pen cap 31 is in the unfolded position, the first magnetic element 221 and the second magnetic element 321 act to provide a magnetic force to drive the pen cap 31 away from the pen tube 21.

[0032] See Figures 1 to 8The capacitive pen 10 with a magnetic opening and closing structure includes a pen tube assembly 20 and a pen cap assembly 30, with the pen cap assembly 30 located at the rear end of the pen tube assembly 20. The pen tube assembly 20 includes a pen tube 21 and a support back cover 22. The pen tube 21 forms part of the outer shell structure of the capacitive pen. In some embodiments, the pen tube 21 can be made of metal, which has high hardness and a long service life, suitable for scenarios requiring frequent writing or drawing. Alternatively, the pen tube 21 can be made of rubber, which is soft, comfortable to use, and effectively protects the touchscreen. A first receiving cavity 211 is formed in the pen tube 21, and the support back cover 22 is fixed in the first receiving cavity 211 to ensure a relatively stable position for the support back cover 22. The pen cap assembly 30 includes a pen cap 31 and a pen cap support 32, which is fixed in the pen cap 31. The pen cap support 32 is sleeved and connected to the support back cover 22 to make the pen cap support 32 and the support back cover 22 structurally compact. In some embodiments, a first magnetic element 221 is provided on the back cover 22 of the bracket, and a second magnetic element 321 is provided on the pen cap bracket 32. The first magnetic element 221 and the second magnetic element 321 can attract each other magnetically. The pen cap bracket 32 ​​is slidably connected to the back cover 22 of the bracket, allowing the pen cap 31 to move axially relative to the pen tube 21 between an unfolded position and a retracted position. Specifically, when the pen cap 31 is in the unfolded position, the first magnetic element 221 and the second magnetic element 321 are aligned in the radial direction of the capacitive pen, and a magnetic attraction is generated between them. Utilizing the principle of magnetic attraction and alignment, the pen cap assembly 30 can be positioned in the open state and cannot be actively reset. When the pen cap 31 is in the retracted position, the second magnetic element 321 moves towards the side closer to the pen tip assembly 2114, and the first magnetic element 221 is aligned in the radial direction of the capacitive pen with the connector 223. At this time, the second magnetic element 321 can attract the connector 223, and the pen cap assembly 30 cannot be actively opened. The unfolded position is located on the side closer to the pen tip assembly 2114, that is, the pen cap 31 is further away from the pen tube 21 in the unfolded position than in the retracted position. When the pen cap 31 is in the unfolded position, the first magnetic element 221 and the second magnetic element 321 work together to provide a magnetic force to drive the pen cap 31 away from the pen tube 21. The pen cap 31 is limited when it slides out relative to the pen tube 21 without the need for a mechanical fastening structure, which can improve the smoothness of the pen cap 31 sliding and its service life.

[0033] See Figures 1-6In some embodiments, the back cover 22 of the bracket is provided with a first mounting groove 222, and the first magnetic element 221 is fixed in the first mounting groove 222 to stabilize the structure of the first magnetic element 221. The size of the first mounting groove 222 is adapted to the size of the first magnetic element 221, and the first magnetic element 221 can be square. A guide groove is formed between the back cover 22 of the bracket and the pen tube 21. The guide groove extends axially, and the pen cap bracket 32 ​​includes an extension 322, which is slidably connected in the guide groove. When the pen cap holder 32 moves relative to the back cover 22 of the holder, the guide groove provides guidance in the direction of movement, so that the sliding movement of the pen cap 31 is in a set direction. The extension 322 is provided with a second mounting groove 3221, and the second magnetic element 321 is fixed in the second mounting groove 3221. There can be two extensions 322, and two symmetrical second mounting grooves 3221 are provided on the two extensions 322 respectively. The two second magnetic elements 321 are fixed in the two second mounting grooves 3221 respectively, so that the magnetic force that drives the pen cap 31 away from the pen tube 21 is more evenly distributed. In some embodiments, the opening direction of the first mounting groove 222 is perpendicular to or opposite to the opening direction of the second mounting groove 3221. For example, when the opening direction of the first mounting groove 222 is upward and the opening direction of the second mounting groove 3221 is downward, this arrangement can ensure that the first magnetic element 221 and the second magnetic element 321 can attract each other magnetically, which helps to prevent the magnets from being pulled out of the mounting grooves and causing interference with the sliding of the pen cap 31.

[0034] See Figures 1-6In some embodiments, the back cover 22 of the bracket is provided with a connector 223, which can be connected to the outside of the capacitive pen to charge it. The battery 2111 is electrically connected to the connector 223 through the motherboard 2112. When the pen cap 31 is in the unfolded position, a gap is formed between the pen cap 31 and the pen tube 21, and the connector 223 is exposed in the gap, so that the user can charge the capacitive pen through the connector 223. In some embodiments, the pen cap 31 is provided with a clip 313, which can cover the connector 223 to improve the aesthetics of the capacitive pen. Specifically, an axial clearance groove 212 is formed at the rear end of the pen cap 31, and the connector 223 is located below the clearance groove 212, which ensures that the connector 223 is exposed in the gap. In some embodiments, the first receiving cavity 211 houses a battery 2111 and a main board 2112. The conductive wires of the battery 2111 can be soldered to the main board 2112. When installing the capacitive pen 10 with a magnetic opening and closing structure, the semi-finished main board 2112 can be inserted into the main bracket 23. The rear cover 22 of the bracket is provided with a connector 223, which can be connected to the outside of the capacitive pen to charge it. The battery 2111 is electrically connected to the connector 223 through the main board 2112. Both the battery 2111 and the connector 223 are located on the side of the first magnetic component 221 away from the pen cap 31, and the connector 223 is exposed on the outer surface of the pen tube 21. When the pen cap 31 is in the closed position, the pen cap 31 covers the connector 223. When the pen cap 31 is in the unfolded position, a gap is formed between the pen cap 31 and the pen tube 21, and the connector 223 is exposed in the gap, so that the user can charge the capacitive pen through the connector 223. In some embodiments, the pen cap 31 is provided with a clip 313, which can cover the connector 223 to improve the aesthetics of the capacitive pen. Specifically, the pen tube 21 near the end of the pen cap 31 has an axial clearance groove 212, and the connector 223 is located below the clearance groove 212, which ensures that the connector 223 is exposed in the space. When the connector 223 is not used and the pen cap 31 is in the closed position, the clip 313 is located above the clearance groove 212 to cover the connector 223, improving the aesthetics of the capacitive pen. At the same time, the clip 313 covering the connector 223 can also reduce the amount of dust falling into the gaps of the connector 223 to a certain extent. When the pen cap 31 is in the unfolded position, the clip 313 moves away from the clearance groove 212 to expose the connector 223. The clip 313 moves above the clearance groove 212 to cover the connector 223. The clip 313 moves away from the clearance groove 212 to expose the connector 223, so that the user can charge the capacitive pen through the connector 223.

[0035] See Figures 1-6In some embodiments, the first receiving cavity 211 is equipped with a wireless charging component 2113, a pen tip component 2114, and a vibration component 2115. The wireless charging component 2113 mainly includes a transmitter and a receiver. Its principle is based on electromagnetic induction and power transmission. The coil of the transmitter generates alternating current through a power source, forming an alternating magnetic field. The coil of the receiver senses this magnetic field, generates an induced electromotive force, and stores electrical energy after processing by internal circuitry. The pen tip component 2114 includes a transmitter 2114a located at the front end of the pen tube 21. The battery 2111 is electrically connected to the wireless charging component 2113, the transmitter 2114a, and the vibration component 2115 through the main board 2112. The vibration component 2115 of the capacitive pen mainly includes a piezoelectric element and a piezoelectric flexible beam. It provides tactile feedback by generating vibration, enhancing the user experience. Specifically, the piezoelectric element can be installed inside the capacitive pen and will vibrate when current passes through it. The piezoelectric flexible beam is installed inside the outer shell of the capacitive pen and connected to the outer shell through a rigid bracket. When an electric current passes through it, the piezoelectric flexible beam moves, creating a vibration effect. A tiny capacitor is formed between the levitating point of the transmitter 2114a and the sensor layer on the touchscreen. When the levitating point touches the touchscreen, the capacitance changes. The capacitive stylus contains a detection circuit that measures and analyzes this capacitance change, converting the electrical signal into a digital signal, which is then transmitted to the device via a data cable or wireless signal to achieve precise control of the screen.

[0036] See Figures 1 to 8 In some embodiments, the pen tube assembly 20 includes a main support 23, which supports and fixes the internal components of the capacitive pen to ensure normal operation. The main support 23 is fixed in the first receiving cavity 211, and the support rear cover 22 is fixed to the end of the main support 23 near the pen cap assembly 30. In some embodiments, the main support 23 is provided with a first limiting member 231, and the pen cap 31 is provided with a second limiting member 311. When the pen cap support 32 slides axially, and the pen cap support 32 moves axially away from the support rear cover 22 so that the pen cap 31 is in the unfolded position, the first limiting member 231 and the second limiting member 311 abut against each other to prevent the pen cap 31 from detaching from the main support 23. For example, the first limiting member 231 includes a limiting post disposed on the main support 23, and the second limiting member 311 includes a sliding groove formed on the pen cap 31. The limiting post can move within the sliding groove. When the pen cap support 32 slides axially to position the pen cap 31 in the unfolded position, the limiting post abuts against the end of the sliding groove. By designing the limiting post to position the pen cap 31, the pen cap 31 can be effectively prevented from detaching from the main support 23. The limiting post can be configured as a cylindrical structure, and the size of the limiting post is adapted to the size of the sliding groove.

[0037] See Figure 3In some embodiments, the capacitive pen 10 with a magnetic opening and closing structure also includes a light guide assembly 40 and a button. The light guide assembly 40 includes a light-emitting element 41 and a light guide element 42. The light guide element 42 can guide the light emitted by the light-emitting element 41 to prevent light leakage. Specifically, a second receiving cavity 312 is formed in the pen cap 31, and a through hole 3121 is formed at the end away from the pen tube assembly 20. The pen cap bracket 32 ​​is disposed in the second receiving cavity 312. The light-emitting element 41 is fixed to the end of the pen cap bracket 32 ​​near the through hole 3121. The light-emitting element 41 can be a light-emitting diode. The light guide 42 is clamped and fixed between the pen cap bracket 32 ​​and the pen cap 31. The light guide 42 is axially aligned with the light-emitting element 41. In some embodiments, the light guide 42 can be made of silicone. The light guide 42 extends into the through hole 3121 and is exposed on the outer surface of the pen cap 31. The light guide 42 is axially aligned with the light-emitting element 41 and the button. The control button can control the switching of the light guide assembly 40. By setting the light guide assembly 40, the capacitive pen 10 with the magnetic opening and closing structure has the function of emitting light. The light guide 42 can effectively guide the light emitted by the light-emitting element 41, avoiding light leakage, and has the effect of saving energy.

[0038] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A capacitive pen with a magnetic opening and closing structure, characterized in that, The pen includes a pen tube assembly and a pen cap assembly. The pen cap assembly is located at the rear end of the pen tube assembly. The pen tube assembly includes a pen tube and a support rear cover. A first receiving cavity is formed in the pen tube. The support rear cover is fixed in the first receiving cavity. A first magnetic element is provided on the support rear cover. The pen cap assembly includes a pen cap and a pen cap bracket. The pen cap bracket is fixed in the pen cap and has a second magnetic element. The pen cap bracket is slidably connected to the rear cover of the bracket so that the pen cap can move axially relative to the pen tube between an extended position and a retracted position. The pen cap is located further away from the pen tube in the extended position than in the retracted position. When the pen cap is in the extended position, the first magnetic element and the second magnetic element act to provide a magnetic force that drives the pen cap away from the pen tube.

2. The capacitive pen with a magnetic opening and closing structure according to claim 1, characterized in that, The bracket back cover is provided with a first mounting groove, and the first magnetic component is fixed in the first mounting groove; a guide groove is formed between the bracket back cover and the pen tube, the guide groove extends along the axial direction, the pen cap bracket includes an extension, the extension is slidably connected in the guide groove, the extension is provided with a second mounting groove, and the second magnetic component is fixed in the second mounting groove.

3. The capacitive pen with a magnetic opening and closing structure according to claim 2, characterized in that, The opening direction of the first mounting groove is perpendicular to or opposite to the opening direction of the second mounting groove.

4. The capacitive pen with a magnetic opening and closing structure according to claim 1, characterized in that, A battery is provided in the first receiving cavity, and a terminal block is provided on the back cover of the bracket. The terminal block is electrically connected to the battery. Both the battery and the terminal block are located on the side of the first magnetic component away from the pen cap. The terminal block is exposed on the outer surface of the pen tube. When the pen cap is in the retracted position, the pen cap covers the terminal block. When the pen cap is in the unfolded position, a gap is formed between the pen cap and the pen tube, and the terminal block is exposed in the gap.

5. The capacitive pen with a magnetic opening and closing structure according to claim 4, characterized in that, The connector has a ferromagnetic material structure. When the pen cap is in the retracted position, the second magnetic element is opposite to the connector in the radial direction of the pen tube.

6. The capacitive pen with a magnetic opening and closing structure according to claim 4, characterized in that, The pen tube has a clearance groove along the axial direction at one end near the pen cap, and the terminal block is exposed below the clearance groove. The pen cap has a clip. When the pen cap is in the closed position, the clip is above the clearance groove to cover the terminal block. When the pen cap is in the unfolded position, the clip is away from the clearance groove to expose the terminal block.

7. The capacitive pen with a magnetic opening and closing structure according to claim 4, characterized in that, The first receiving cavity is provided with a motherboard, a wireless charging component, a pen tip component and a vibration component. The pen tip component includes a transmitter located at the front end of the pen tube. The battery is electrically connected to the transmitter, the vibration component and the wireless charging component through the motherboard.

8. The capacitive pen with a magnetic opening and closing structure according to claim 1, characterized in that, The pen tube assembly includes a main support, which is fixed in the first receiving cavity. The support rear cover is fixed to one end of the main support near the pen cap assembly. The main support is provided with a first limiting member, and the pen cap is provided with a second limiting member. When the pen cap support moves away from the support rear cover along the axial direction so that the pen cap is in the unfolded position, the first limiting member and the second limiting member abut against each other to prevent the pen cap from detaching from the main support.

9. The capacitive pen with a magnetic opening and closing structure according to claim 8, characterized in that, The first limiting member includes a limiting post disposed on the main support, and the second limiting member includes a sliding groove formed on the pen cap. The limiting post is slidably connected in the sliding groove. When the pen cap is in the unfolded position, the limiting post abuts against the end of the sliding groove.

10. The capacitive pen with a magnetic opening and closing structure according to claim 1, characterized in that, It also includes a light guide assembly and a button. A second receiving cavity is formed in the pen cap, and a through hole is formed at the end away from the pen tube assembly. The pen cap bracket is disposed in the second receiving cavity. The light guide assembly includes a light-emitting element and a light guide element. The light-emitting element and the light guide element are disposed at the end of the pen cap bracket near the through hole. The light guide element is clamped between the pen cap bracket and the pen cap, and the light guide element extends into the through hole to be exposed on the outer surface of the pen cap. The light guide element is axially aligned with the light-emitting element and the button.

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