Electronic pen

Abstract

The electronic pen comprises a pen holder, a circuit board assembly, a pen point, a clamping base, a first electrode and a driving assembly, and a mounting cavity is formed in the pen holder; the circuit board assembly is arranged in the mounting cavity; the pen point is arranged at the end of the penholder; the clamping seat is arranged in the mounting cavity and fixedly connected with the pen holder, and the clamping seat clamps the pen point; the first electrode is arranged in the mounting cavity, is electrically connected with the circuit board assembly, and extends into the clamping seat to abut against the pen point; the driving assembly comprises a limiting adjusting part and a driving part, the limiting adjusting part is exposed out of the pen holder and movably connected with the pen holder, and the driving part abuts against the end, away from the pen point, of the first electrode; the limiting adjusting part can drive the driving part and the first electrode to move relative to the clamping base under the action of external force so as to drive the pen point to at least partially stretch out relative to the pen holder. According to the electronic pen, the pen point can be independently replaced.

Description

Technical Field

[0001] The present application relates to the technical field of electronic pens, and in particular to an electronic pen. Background Art

[0002] An electronic pen usually refers to a pen-shaped device that combines the appearance of a traditional writing tool with the functions of modern electronic technology. As a type of electronic pen, especially active capacitive pens, are widely used due to their high precision and sensitivity.

[0003] In the related art, an active capacitive pen includes a pen body, a pen tip, electrodes and a circuit board, wherein the electrodes and the circuit board are both arranged inside the pen body, and the pen tip is arranged at the end of the pen body. When the pen tip approaches or touches the capacitive screen, under the conductive action of the electrode, the circuit formed on the circuit board will generate a continuous electromagnetic signal. This signal will interact with the capacitive sensor array on the capacitive screen, and the capacitive screen will determine the exact position of the pen tip through the signal.

[0004] However, after long-term use of the above-mentioned active capacitive pen, since the material of the pen tip is softer than that of the capacitive screen, the material on the surface of the pen tip will gradually be lost and worn. When the pen tip is worn to a certain extent, the pen tip cannot be clamped and replaced. The user can only choose to replace the capacitive pen as a whole, which not only reduces the user experience but also increases the cost of use. Utility Model Content

[0005] The embodiment of the present application provides an electronic pen whose pen tip can be replaced to enhance the user experience and reduce the cost of using the electronic pen.

[0006] The present application provides an electronic pen, comprising a pen body, a circuit board assembly, a pen tip, a clamping seat, a first electrode and a driving assembly, wherein a mounting cavity is formed inside the pen body; the circuit board assembly is arranged in the mounting cavity; the pen tip is arranged at the end of the pen body; the clamping seat is arranged in the mounting cavity and fixedly connected to the pen body, and the clamping seat clamps the pen tip; the first electrode is arranged in the mounting cavity and electrically connected to the circuit board assembly, the first electrode extends into the clamping seat and abuts against the pen tip; the driving assembly comprises a limit adjustment part and a driving part, the limit adjustment part is exposed on the pen body and movably connected to the pen body, and the driving part abuts against the end of the first electrode facing away from the pen tip; wherein, the limit adjustment part can drive the driving part and the first electrode to move relative to the clamping seat under the action of an external force, so as to drive the pen tip to at least partially extend relative to the pen body.

[0007] As an optional embodiment, the pen shaft has a through groove connected to the mounting cavity; the limit adjustment part can slide along the through groove under the action of external force, and drive the driving part and the first electrode to slide relative to the clamping seat, so as to drive the pen tip to at least partially extend relative to the pen shaft.

[0008] As an optional embodiment, the driving assembly includes a sliding switch and a push rod, at least part of the sliding switch is exposed in the through groove and forms a limit adjustment part; one end of the push rod is transmission-connected to the sliding switch, and the other end of the push rod abuts against the first electrode and forms a driving part; wherein, the sliding switch can drive the push rod and the first electrode to slide relative to the clamping seat under the action of external force, so as to drive the pen tip to at least partially extend relative to the pen shaft.

[0009] As an optional embodiment, the sliding switch includes a switch body and a sliding keycap, the push rod is transmission-connected to the slider of the switch body, and the sliding keycap is fixedly connected to the slider of the switch body; the sliding keycap is exposed to the pen shaft through a through groove and can slide in the through groove.

[0010] As an optional embodiment, the sliding keycap includes a keycap body and an adapter that are connected to each other. The keycap body and the adapter can slide along the through groove, and the adapter is fixedly connected to the slider of the sliding switch.

[0011] As an optional embodiment, the circuit board assembly includes an electrically connected transfer board and a main board, the transfer board is arranged closer to the pen tip than the main board, and the first electrode is electrically connected to the transfer board; the switch body is arranged on the transfer board.

[0012] As an optional implementation, the electronic pen provided in the present application further includes a conductive spring connected between the first electrode and the transfer plate.

[0013] As an optional embodiment, the first electrode includes a main body and a boss arranged on the main body, the boss extends along the circumference of the main body, and the boss separates the main body into a first main body segment and a second main body segment; the first main body segment extends into the clamping seat and abuts against the pen tip; the conductive spring is sleeved on the second main body segment and connected to the boss.

[0014] As an optional embodiment, the pen shaft includes a rod body and a stop portion, the rod body constructs a mounting cavity, the stop portion is arranged on the side wall of the mounting cavity, and the stop portion has a first through hole for the first body section to pass through; the clamping seat abuts against the side of the stop portion close to the pen tip; in the process of the first electrode sliding toward the side close to the pen tip, the boss can stop at the end of the stop portion away from the pen tip.

[0015] As an optional embodiment, the electronic pen provided in the present application also includes a conductive ring, which is electrically connected to the transfer plate. The conductive ring is sleeved on the outside of the clamping seat and abuts against the pen tip; a limiting portion is also provided on the inside of the rod body, which is closer to the pen tip than the stop portion. A second through hole is formed on the limiting portion for the conductive ring to pass through and is opposite to the first through hole; at least part of the structure of the conductive ring is restricted between the stop portion and the limiting portion.

[0016] As an optional implementation, the detection spring is sleeved on the conductive ring, and the detection spring is electrically connected to the transfer plate.

[0017] The electronic pen provided in the present application includes a driving component, which includes a limit adjustment part and a driving part. The limit adjustment part is exposed on the pen shaft and is movably connected to the pen shaft, and the driving part abuts against the end of the first electrode away from the pen tip; wherein, the limit adjustment part can drive the driving part and the first electrode to move relative to the clamping seat under the action of external force, so as to drive the pen tip to at least partially extend relative to the pen shaft.

[0018] In this way, when the pen tip is worn to a certain extent and cannot be clamped, the driving assembly can drive the driving part and the first electrode to move relative to the clamping seat, so as to drive the pen tip to at least partially extend relative to the pen shaft. After the pen tip is at least partially extended, the pen tip can be clamped and removed, so as to be replaced with a new pen tip. In this way, the user experience and performance of the electronic pen provided in this application can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the electronic pen provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the planar structure of the electronic pen provided in an embodiment of the present application;

[0022] Figure 3 An exploded view of the electronic pen provided in an embodiment of the present application;

[0023] Figure 4 for Figure 2 Cross-sectional view along AA direction;

[0024] Figure 5 An exploded view of a partial structure of the pen holder of the electronic pen provided in an embodiment of the present application;

[0025] Figure 6 for Figure 5 Schematic diagram of the structure from another perspective;

[0026] Figure 7 for Figure 4 A magnified schematic diagram of the local structure at point B in the middle;

[0027] Figure 8A schematic diagram of the three-dimensional structure of a partial structure of an electronic pen provided in an embodiment of the present application;

[0028] Figure 9 A schematic diagram of the three-dimensional structure of the keycap body in the electronic pen provided in an embodiment of the present application;

[0029] Figure 10 This is a schematic diagram of the three-dimensional structure of the adapter in the electronic pen provided in an embodiment of the present application.

[0030] Description of Figure Numbers:

[0031] 1. Penholder; 2. Circuit board assembly; 3. Pen tip; 4. Clamping base; 5. First electrode; 6. Driving assembly; 7. Conductive spring; 8. Battery module; 9. Conductive ring;

[0032] 10. Electronic pen; 11. Rod; 21. Transfer plate; 22. Main plate; 31. First pen segment; 32. Second pen segment; 41. First clamping portion; 42. Second clamping portion; 51. Main body; 52. Boss; 61. Limit adjustment portion; 62. Drive portion; 63. Slide switch; 64. Push rod; 91. First ring portion; 92. Second ring portion; 93. Annular flange;

[0033] 111, outer shell; 112, inner shell; 113, protective cover; 114, through slot; 421, deformation notch; 511, first body segment; 512, second body segment; 631, switch body; 632, sliding keycap; 110, detection spring; 120, second electrode; 130, charging connector;

[0034] 1121, first shell; 1122, second shell; 1123, first shell body; 1124, connecting cover; 1125, second shell body; 1126, positioning column; 1127, positioning portion; 1128, positioning hole; 1129, buckle; 1130, slot; 1140, first mounting cavity; 1150, second mounting cavity; 1160, mounting cavity; 1170, first slot; 1180, second slot; 1190, charging port; 1110, stopper; 1111, first through hole; 1112, first stop plate; 1113, second stop plate; 1114, first hole Segment; 1115, second hole segment; 1116, avoidance hole; 1120, limiting portion; 1220, second through hole; 1230, first limiting plate; 1240, second limiting plate; 1231, first through hole segment; 1241, second through hole segment; 1141, first slot segment; 1142, second slot segment; 6311, slider; 6321, keycap body; 6322, adapter; 6323, exposed portion; 6324, snap-on protrusion; 6325, connecting plate; 6326, snap-on protrusion; 6327, snap-on plate; 6328, connecting block; 6329, snap-on hole; 6330, connecting hole.

[0035] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0037] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0038] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0040] See Figures 1 to 3 , Figure 1 This is a schematic diagram of the three-dimensional structure of the electronic pen provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the planar structure of the electronic pen provided in an embodiment of the present application. Figure 3 This is an exploded view of an electronic pen provided in an embodiment of the present application. As shown, this embodiment provides an electronic pen 10, comprising a pen holder 1. It should be noted that the electronic pen 10 provided in this embodiment includes, but is not limited to, an active capacitive stylus. The type of electronic pen 10 provided in this embodiment is not specifically limited.

[0041] Please combine Figure 4 , Figure 4 for Figure 2Cross-sectional view along direction AA. In some specific embodiments, the pen body 1 includes a body 11, which includes an outer shell 111, an inner shell 112, and a protective cover 113. The outer shell 111 is sleeved on the outside of the inner shell 112. The inner shell 112 includes a first shell portion 1121 and a second shell portion 1122 that snap together. The first shell portion 1121 and the second shell portion 1122 are connected together to form a first installation cavity 1140. The protective cover 113 is detachably connected to the rear end of the inner shell 112. The front end of the outer shell 111 and the front end of the inner shell 112 are combined to form a second installation cavity 1150. The first installation cavity 1140 and the second installation cavity 1150 together form an installation cavity 1160.

[0042] Please continue to combine Figure 5 and Figure 6 , Figure 5 This is an exploded view of the partial structure of the pen holder in the electronic pen provided in an embodiment of the present application. Figure 6 for Figure 5 A structural diagram from another perspective. As shown in the figure, the first shell portion 1121 includes a first shell body 1123 and a connecting cover 1124 connected to the rear end of the first shell body 1123, and the second shell portion 1122 includes a second shell body 1125. It is understood that if the first shell portion 1121 and the second shell portion 1122 are detachably connected, the assembly efficiency of the pen holder 1 will be improved, and thus the assembly efficiency of the electronic pen 10 provided in this embodiment will be improved.

[0043] In order to achieve a detachable connection between the first shell part 1121 and the second shell part 1122, a positioning column 1126 is provided on the side of the first shell body 1123 facing the second shell body 1125, and a positioning portion 1127 is provided on the side of the second shell body 1125 facing the first shell body 1123. A positioning hole 1128 is formed on the positioning portion 1127 for inserting the positioning column 1126, and a buckle 1129 is provided on the side of the first shell body 1123 facing the second shell body 1125. Correspondingly, a slot 1130 is formed on the second shell body 1125 to engage with the buckle 1129.

[0044] It should be noted that the connection between the first shell 1121 and the second shell 1122 is realized by the snap fit between the buckle 1129 and the slot 1130, and the fit between the positioning column 1126 and the positioning hole 1128 is to play a positioning role before connecting the first shell 1121 and the second shell 1122, so that the assembly efficiency between the first shell 1121 and the second shell 1122 is higher.

[0045] Furthermore, in order to further improve the assembly efficiency between the first shell portion 1121 and the second shell portion 1122, and to improve the connection reliability between the first shell portion 1121 and the second shell portion 1122, the above-mentioned positioning columns 1126 can be two, and are relatively arranged on both sides of the first shell body 1123, and one positioning column 1126 corresponds to one positioning portion 1127; the above-mentioned buckles 1129 can be arranged into two groups at intervals along the length direction of the pen barrel 1, and each group of buckles 1129 includes buckles 1129 relatively arranged on both sides of the first shell body 1123, and one buckle 1129 corresponds to a slot 1130.

[0046] The detachable connection between the connecting cover 1124 and the protective cover 113 can be achieved by snap-fitting or other connection methods, which is not limited here; the connection method between the outer shell 111 and the inner shell 112 can also be bonding or snap-fitting, which is not limited here.

[0047] In order to enable the electronic pen 10 to write and draw on the capacitive screen, the electronic pen 10 provided in this embodiment should also include a circuit board assembly 2 arranged in the first mounting cavity 1140, a pen tip 3 arranged at the end of the pen body 1, a clamping seat 4 for clamping the pen tip 3, and a first electrode 5. The clamping seat 4 is fixedly connected to the pen body 1, and one end of the clamping seat 4 extends into the first mounting cavity 1140, and the other end extends into the second mounting cavity 1150. The first electrode 5 is electrically connected to the circuit board assembly 2, and one end of the first electrode 5 is located in the first mounting cavity 1140, and the other end extends into the clamping seat 4 and abuts against the pen tip 3.

[0048] When the pen tip 3 contacts the capacitive screen, the first electrode 5 forms a coupling capacitor with the sensing electrode on the surface of the capacitive screen, and the capacitive screen can detect the location of the pen tip 3 .

[0049] In this embodiment, the first electrode 5 is a copper rod electrode. Of course, in some other embodiments, the first electrode 5 can also be made of other materials, such as conductive rubber, conductive fiber, or aluminum foil. Here, there is no specific limitation on the material of the first electrode 5.

[0050] In related technology, an active capacitive stylus consists of a pen holder, a pen tip, electrodes, and a circuit board. The electrodes and circuit board are located inside the pen holder, while the pen tip is located at the end of the pen holder. When the pen tip touches or approaches a capacitive touch screen, the circuitry on the circuit board actively transmits high-frequency signals, which are then received by the capacitive layer of the screen. This two-way communication enables the screen to precisely identify the position, pressure, and tilt angle of the pen tip, providing finer control and greater accuracy.

[0051] Typically, capacitive screens are made of glass or glass-like materials, while pen tips are typically made of rubber, plastic, or synthetic plastic. Therefore, the capacitive screen is typically harder than the pen tip. This difference in hardness means the pen tip will gradually wear out due to constant contact with the harder surface of the capacitive screen. When the pen tip wears sufficiently, it becomes embedded within the pen barrel, making it impossible to remove and replace it. Users are forced to replace the entire capacitive stylus, which not only reduces the user experience but also increases the cost of use.

[0052] Therefore, please combine Figure 7 , Figure 7 for Figure 4 A schematic diagram of the enlarged local structure at point B in the figure. In order to overcome the above-mentioned defects, the electronic pen 10 provided in this embodiment also includes a driving component 6, which includes a limit adjustment portion 61 and a driving portion 62. The limit adjustment portion 61 is exposed from the housing 111 of the pen body 1 and is movably connected to the pen body 1. The driving portion 62 abuts against the end of the first electrode 5 that is away from the pen tip 3. The limit adjustment portion 61 can drive the driving portion 62 and the first electrode 5 to move relative to the clamping seat 4 under the action of an external force, so as to drive the pen tip 3 to at least partially extend relative to the pen body 1. In this way, when the pen tip 3 is worn to the point where it cannot be clamped, the driving component 6 can drive the pen tip 3 to extend relative to the pen body 1. After the pen tip 3 is at least partially extended, the pen tip 3 can be clamped and removed to be replaced with a new pen tip 3. In this way, the user experience and performance of the electronic pen 10 provided in this embodiment can be improved.

[0053] The driving portion 62 and the first electrode 5 can move relative to the clamping base 4 in a manner such that the swinging of the position-limiting adjustment portion 61 drives the swinging of the driving portion 62 and the movement of the first electrode 5; or in a manner such that the movement of the position-limiting adjustment portion 61 drives the movement of the driving portion 62 and the movement of the first electrode 5. These two motion modes can be used in the actual manufacturing process.

[0054] Regardless of the movement mode, the rod body 11 should be provided with a through slot 114 communicating with the first mounting cavity 1140 to expose the position-limiting adjustment portion 61. Specifically, the through slot 114 should include a first slot section 1141 formed on the inner shell 112 and a second slot section 1142 formed on the outer shell 111. Since the inner shell 112 is formed by the first shell portion 1121 and the second shell portion 1122 being fastened together, the first slot section 1141 should include a first slot 1170 formed on the first shell body 1123 and a second slot 1180 formed on the second shell body 1125. The first slot 1170 and the second slot 1180 are fastened together to form the first slot section 1141.

[0055] For the former, the driving component 6 may include a rocker arm and a driving rod. The rocker arm is rotatably connected to the pen body 1, and one end of the rocker arm is exposed from the pen body 1 to form a limit adjustment part 61, and the other end of the rocker arm abuts against one end of the driving rod. The other end of the driving rod forms a driving part 62 that abuts against the first electrode 5. The abutting surface between the rocker arm and the driving rod is an inclined surface. By swinging the rocker arm, the driving rod can be driven to move, thereby driving the first electrode 5 and the pen tip 3 to move.

[0056] The latter movement mode will be described in detail in the following embodiments.

[0057] It is understood that if the driving portion 62 is movable, then the cooperation between the driving portion 62 and the pen holder 1 should be a sliding cooperation. In other words, the limit adjustment portion 61 can slide along the through slot 114 under the action of an external force, and drive the driving portion 62 and the first electrode 5 to slide relative to the clamping seat 4, thereby causing the pen tip 3 to at least partially extend relative to the pen holder 1. The external force here can be understood as the thrust applied by the user to the limit adjustment portion 61.

[0058] Please combine Figure 8 , Figure 8 A schematic diagram of the three-dimensional structure of a partial structure of an electronic pen provided in an embodiment of the present application. In one specific embodiment, the drive assembly 6 includes a sliding switch 63 and a push rod 64. At least a portion of the sliding switch 63 is exposed in the through slot 114 and forms a limit adjustment portion 61. One end of the push rod 64 is in driving connection with the sliding switch 63, and the other end of the push rod 64 abuts the first electrode 5 and forms a drive portion 62. The sliding switch 63, under the action of an external force, can drive the push rod 64 and the first electrode 5 to slide relative to the clamping seat 4, thereby causing the pen tip 3 to at least partially extend relative to the pen body 1.

[0059] Among them, the sliding switch 63 includes a switch body 631 and a sliding keycap 632, the push rod 64 is transmission-connected to the slider 6311 of the switch body 631, and the sliding keycap 632 is fixedly connected to the slider 6311 of the switch body 631; the sliding keycap 632 is exposed to the pen body 1 through the through groove 114 and can slide in the through groove 114.

[0060] More specifically, the sliding keycap 632 includes a connected keycap body 6321 and an adapter 6322, the keycap body 6321 and the adapter 6322 can slide along the through groove 114, the adapter 6322 is fixedly connected to the slider 6311 of the sliding switch 63, wherein the keycap body 6321 can slide along the second groove section 1142, and the adapter 6322 can slide along the first groove section 1141.

[0061] It should be noted that the slide switch 63 is a common electronic component used to control the on and off of a circuit. Its working principle is to connect or disconnect the conductive path in the circuit through physical sliding.

[0062] In order to more clearly understand the connection relationship between the switch body 631 and the sliding key cap 632, the following will be combined with Figure 9 and Figure 10 For further introduction, Figure 9 This is a schematic diagram of the three-dimensional structure of the keycap body in the electronic pen provided in an embodiment of the present application. Figure 10 A schematic diagram of the three-dimensional structure of an adapter in an electronic pen provided in an embodiment of the present application is shown. As shown in the figure, in some specific embodiments, the keycap body 6321 includes a revealing portion 6323 exposed from the pen barrel 1. The revealing portion 6323 is the limit adjustment portion 61. The revealing portion 6323 is exposed through the second groove section 1142 and slidably engages with the second groove section 1142. Two opposing locking protrusions 6324 are provided on the inner side of the revealing portion 6323. The locking protrusions 6324 include a connecting plate 6325 and a protruding locking protrusion 6326 connected together. One end of the connecting plate 6325 is connected to the revealing portion 6323, and the other end of the connecting plate 6325 extends radially along the inner shell 112 toward the first mounting cavity 1140 and is connected to the locking protrusion 6326. The locking protrusions 6326 of the two locking protrusions 6324 are arranged opposite each other.

[0063] Combine Figure 3 In order to further enhance the user experience of the electronic pen 10 provided in this embodiment, a mark may be provided on the outer surface of the exposed portion 6323, i.e., the limit adjustment portion 61, to indicate the pushing direction of the limit adjustment portion 61. For example, Figure 3 There is a combination of an arrow and a vertical mark in the figure, which can be understood as pushing the limit adjustment part 61 toward the side of the vertical mark.

[0064] Furthermore, the adapter 6322 includes a snap-in plate 6327 and a connecting block 6328 connected together. The snap-in plate 6327 slides with the first groove section 1141. The shape of the snap-in plate 6327 is adapted to the shape of the inner shell 112. The snap-in plate 6327 is provided with two snap-in holes 6329 corresponding to the two snap-in protrusions 6324. The snap-in protrusions 6324 can pass through the corresponding snap-in holes 6329 to snap-in and connect the snap-in protrusions 6326 with the snap-in holes 6329 together; the connecting block 6328 is connected to the inner side of the snap-in plate 6327, and the connecting block 6328 is provided with a connecting hole 6330 for the slider 6311 to extend into. The slider 6311 is connected to the connecting hole 6330 to connect the adapter 6322 with the slider 6311.

[0065] To ensure high internal stability of the electronic pen 10, grounding is required. Therefore, in an optional embodiment, the circuit board assembly 2 includes an electrically connected transfer board 21 and a main board 22. The transfer board 21 is located closer to the pen tip 3 than the main board 22, and the first electrode 5 is electrically connected to the transfer board 21. The switch body 631 is disposed on the transfer board 21. Thus, when the user slides the sliding switch 63, it contacts the grounded metal rail on the transfer board 21, forming a low-impedance electrical path that connects part or all of the circuit to ground.

[0066] Furthermore, in order to power the circuit board assembly 2 , the electronic pen 10 provided in this embodiment further includes a battery module 8 disposed between the transfer board 21 and the main board 22 . Both the transfer board 21 and the main board 22 are electrically connected to the battery module 8 .

[0067] Combine Figure 3 and Figure 4 To charge the battery module 8, a charging connector 130 is provided at the rear end of the electronic pen 10 provided in this embodiment. The charging connector 130 is provided to charge the battery module 8, and the protective cover 113 is provided opposite the charging connector 130 to protect it. It should be noted that the charging connector 130 can be a Micro USB, USB Type-C, or Lightning interface, and the type of the charging connector 130 is not specifically limited.

[0068] In addition, a charging hole 1190 for the charging cable to pass through is also provided on the connection cover 1124. Here, no specific limitation is imposed on the charging method.

[0069] In some optional implementations, in order to ensure good electrical contact between the first electrode 5 and the transfer plate 21 , the electronic pen 10 provided in this embodiment may further include a conductive spring 7 connected between the first electrode 5 and the transfer plate 21 . In this way, even if there are slight unevenness or wear on the surface of the first electrode 5 or the transfer plate 21, the elastic force of the conductive spring 7 can compensate for these minor differences, ensuring circuit continuity and reliable signal transmission. In addition, due to the compressibility of the conductive spring 7, it can play a certain role in regulating the connection between the first electrode 5 and the transfer plate 21. That is, when the internal components of the electronic pen 10 change due to factors such as temperature changes, material expansion or contraction, the conductive spring 7 can adapt to these changes, maintaining stable contact pressure, and ensuring that circuit function is not affected. Moreover, during use, the electronic pen 10 may be subjected to accidental impact or vibration. The conductive spring 7 can absorb this energy, reducing direct impact on the circuit board assembly 2 and sensitive electronic components, thereby improving the overall durability and service life of the electronic pen 10 provided by this embodiment. In addition, the provision of the conductive spring 7 simplifies the assembly process of the electronic pen 10 provided by this embodiment, allowing the first electrode 5 and the transfer plate 21 to be electrically connected without the need for additional fasteners. At the same time, the elasticity and flexibility of the conductive spring 7 also facilitate disassembly and reassembly when repair or component replacement is required.

[0070] To secure the conductive spring 7, in some specific embodiments, the first electrode 5 includes a body portion 51 and a boss 52 disposed on the body portion 51. The boss 52 extends circumferentially along the body portion 51 and divides the body portion 51 into a first body segment 511 and a second body segment 512. The first body segment 511 extends into the clamping seat 4 and abuts the pen tip 3. The conductive spring 7 is sleeved on the second body segment 512 and connected to the boss 52. This improves the connection reliability between the conductive spring 7 and the first electrode 5, thereby enhancing the conductive stability of the conductive spring 7.

[0071] It is understandable that if the travel of the pen tip 3 is not restricted, the pen tip 3 may be fully extended and fall. Therefore, in this embodiment, the travel of the pen tip 3 can be restricted. Specifically, a stopper 1110 is provided on the side wall of the first mounting cavity 1140. The stopper 1110 has a first through-hole 1111 for the first body section 511 to pass through. The clamping seat 4 abuts against the side of the stopper 1110 close to the pen tip 3. During the process of the first electrode 5 sliding toward the side close to the pen tip 3, the boss 52 can be stopped by the end of the stopper 1110 away from the pen tip 3. In this way, by restricting the travel of the first electrode 5, the travel of the pen tip 3 can be restricted to prevent the pen tip 3 from falling directly during the extension process, which would affect the user experience.

[0072] Specifically, from the above, it can be seen that the inner shell 112 is formed by the first shell part 1121 and the second shell part 1122 being snapped together. Therefore, the above-mentioned stop part 1110 includes a first stop plate 1112 connected to the inner side of the first shell body 1123 and a second stop plate 1113 connected to the inner side of the second shell body 1125. The first stop plate 1112 is provided with a first hole section 1114, and the second stop plate 1113 is provided with a second hole section 1115. The first hole section 1114 and the second hole section 1115 are snapped together to form the above-mentioned first through hole 1111.

[0073] To enhance the uniformity of the electric field around the pen tip 3 and ensure more stable and accurate touch signals, the electronic pen 10 provided in this embodiment may further include a conductive ring 9. The conductive ring 9 is electrically connected to the transfer plate 21. The conductive ring 9 is disposed outside the clamping base 4 and abuts the pen tip 3. The conductive ring 9 is made of a conductive material, such as a conductive metal such as graphite or copper. In some other embodiments, the conductive ring 9 may also be made of plastic coated with a conductive layer. The material of the conductive ring 9 is not specifically limited.

[0074] Furthermore, if the conductive ring 9 and the clamping base 4 are in conductive contact, the closed circuit formed between them may interfere with the signal transmission of the electronic pen 10, resulting in reduced touch accuracy or complete failure. Therefore, the conductive ring 9 and the clamping base 4 should be insulated. For example, a layer of insulating material such as plastic, rubber, or polytetrafluoroethylene (PTFE) can be added between the conductive ring 9 and the clamping base 4; or, the surface of the clamping base 4 can be coated with an insulating coating such as epoxy resin or silicone. Alternatively, the clamping base 4 can be made of a non-conductive composite material. In a specific embodiment of this embodiment, the surface of the clamping base 4 is coated with an insulating coating.

[0075] Please combine Figure 3 and Figure 7 The clamping seat 4 includes a first clamping portion 41 and a second clamping portion 42 connected together, the outer diameter of the first clamping portion 41 is larger than the outer diameter of the second clamping portion 42, and the first clamping portion 41 abuts against the stop portion 1110, the second clamping portion 42 is clamped on the outside of the first electrode 5 and the pen tip 3, and the second clamping portion 42 extends from the first mounting cavity 1140 to the second mounting cavity 1150.

[0076] In some optional embodiments, in order to facilitate clamping of the pen tip 3, the above-mentioned second clamping portion 42 can form a deformation gap 421. In this way, the deformation amount of the second clamping portion 42 can be increased by setting the deformation gap 421, thereby facilitating clamping of the pen tip 3.

[0077] In order to limit the installation position of the conductive ring 9, in some embodiments, a limiting portion 1120 is further provided on the inner side of the inner shell 112. The limiting portion 1120 is provided closer to the pen tip 3 than the stop portion 1110. A second through hole 1220 is formed on the limiting portion 1120 for the conductive ring 9 to pass through and is opposite to the first through hole 1111; at least part of the structure of the conductive ring 9 is limited between the stop portion 1110 and the limiting portion 1120.

[0078] Specifically, the conductive ring 9 includes a first ring portion 91 and a second ring portion 92 connected together, the outer diameter of the first ring portion 91 is larger than the outer diameter of the second ring portion 92, one end of the first ring portion 91 abuts against the first clamping portion 41, and the other end of the first ring portion 91 abuts against the limiting portion 1120, that is, the first ring portion 91 is restricted between the stop portion 1110 and the limiting portion 1120, and the second ring portion 92 extends into the second mounting cavity 1150 and abuts against the pen tip 3.

[0079] Since the inner shell 112 is composed of the first shell portion 1121 and the second shell portion 1122 buckled together, the above-mentioned limiting portion 1120 includes a first limiting plate 1230 arranged on the first shell body 1123 and a second limiting plate 1240 arranged on the second shell body 1125, a first through hole section 1231 is formed on the first limiting plate 1230, and a second through hole section 1241 is formed on the second limiting plate 1240, and the first through hole section 1231 and the second through hole section 1241 are buckled together to form a second through hole 1220.

[0080] In some specific embodiments, the pen tip 3 includes a first pen segment 31 and a second pen segment 32 connected together, the diameter of the first pen segment 31 is larger than the diameter of the second pen segment 32, and the first pen segment 31 is used to contact the capacitive screen, the second ring portion 92 abuts against the connecting surface at the connection between the first pen segment 31 and the second pen segment 32, and the end of the second pen segment 32 facing away from the first pen segment 31 abuts against the first main body segment 511.

[0081] In order to detect the wear of the pen tip 3, the electronic pen 10 provided in this embodiment may further include a detection spring 110. The detection spring 110 is mounted on the second ring portion 92 of the conductive ring 9, and the detection spring 110 is electrically connected to the transfer plate 21. In order to facilitate the setting of the detection spring 110, an annular flange 93 is provided on the outer side of the second ring portion 92, and the end of the detection spring 110 is connected to the annular flange 93.

[0082] In this way, the detection spring 110 is directly in contact with the conductive ring 9 through extrusion. The detection spring 110 is directly wound on the conductive ring 9 and can be used to detect the wear of the pen tip 3. As the pen tip 3 wears, the resistance value of the pen tip 3 will change, and the electrical signal transmitted by the detection spring 110 will change accordingly. When the pen tip is worn to the set wear limit, the electrical signal transmitted by the detection spring 110 is consistent with the set value, which will trigger the built-in program, the indicator light will flash red, and the screen paired with the electronic pen 10 will prompt the user to replace the pen tip 3 as soon as possible. This can better avoid the situation where the pen body 1 is worn due to the user's failure to check the wear of the pen tip 3 in time, reduce the risk of damaging the electronic pen 10, and compared with the existing technology, there is no need to replace the entire electronic pen 10.

[0083] Typically, an electronic pen is equipped with a transmitting electrode (the first electrode 5 described above) and a receiving electrode. The receiving electrode's primary function is to receive signals emitted by the transmitting electrode and reflected back from the screen. The receiving electrode helps determine the specific position of the electronic pen on the screen, as differences in signal strength or phase at different locations can be used to calculate the position of the pen tip.

[0084] Therefore, the electronic pen 10 provided in this embodiment further includes a second electrode 120 , one end of which is connected to the first ring portion 91 of the conductive ring 9 , and the other end of the second electrode 120 is electrically connected to the transfer plate 21 . A clearance hole 1116 is formed on the stopper portion 1110 for the second electrode 120 to pass through. The clearance hole 1116 can be formed similarly to the first through hole 1111 described above, or it can be formed by the shapes of the first stopper plate 1112 and the second stopper plate 1113 . This is not a specific limitation.

[0085] In the electronic pen 10 provided in this embodiment, when the user receives the prompt information to replace the pen tip 3, the sliding keycap 632 of the sliding switch 63 can be pushed in the direction close to the pen tip 3. After the sliding switch 63 is pushed, the push rod 64 will move synchronously, thereby driving the pen tip 3 to extend relative to the pen barrel 1. After the pen tip 3 is extended, the pen tip 3 can be clamped and removed, and then a new pen tip 3 can be installed. After the new pen tip 3 is installed, it will drive the push rod 64 and the sliding switch 63 to reset.

[0086] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0087] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An electronic pen, characterized in that: include: The pen holder has a mounting cavity formed therein; A circuit board assembly is disposed in the mounting cavity; A pen tip, arranged at the end of the pen shaft; A clamping seat is disposed in the mounting cavity and fixedly connected to the pen holder, and the clamping seat clamps the pen tip; a first electrode disposed in the mounting cavity and electrically connected to the circuit board assembly, the first electrode extending into the clamping seat and abutting against the pen tip; as well as, a driving assembly comprising a limit adjustment portion and a driving portion, wherein the limit adjustment portion is exposed from the pen holder and movably connected to the pen holder, and the driving portion abuts against an end of the first electrode facing away from the pen tip; Wherein, the limit adjustment portion can drive the driving portion and the first electrode to move relative to the clamping seat under the action of an external force, so as to drive the pen tip to at least partially extend relative to the pen shaft.

2. The electronic pen according to claim 1, wherein The pen holder is provided with a through groove communicating with the mounting cavity; The limit adjustment portion can slide along the through slot under the action of an external force, and drive the driving portion and the first electrode to slide relative to the clamping seat, so as to drive the pen tip to at least partially extend relative to the pen shaft.

3. The electronic pen according to claim 2, wherein: The driving assembly includes a sliding switch and a push rod, wherein at least a portion of the sliding switch is exposed in the through slot and forms the limit adjustment portion; One end of the push rod is in transmission connection with the slide switch, and the other end of the push rod abuts against the first electrode and forms the driving part; Wherein, the sliding switch can drive the push rod and the first electrode to slide relative to the clamping seat under the action of external force, so as to drive the pen tip to at least partially extend relative to the pen body.

4. The electronic pen according to claim 3, wherein: The sliding switch comprises a switch body and a sliding keycap, the push rod is in transmission connection with the slider of the switch body, and the sliding keycap is fixedly connected with the slider of the switch body; The sliding keycap is exposed on the pen shaft via the through slot and can slide in the through slot.

5. The electronic pen according to claim 4, wherein: The sliding keycap comprises a keycap body and an adapter that are connected to each other. The keycap body and the adapter can slide along the through slot, and the adapter is fixedly connected to the slider of the sliding switch.

6. The electronic pen according to claim 4, wherein: The circuit board assembly includes a transfer board and a main board that are electrically connected, the transfer board is arranged closer to the pen tip than the main board, and the first electrode is electrically connected to the transfer board; The switch body is arranged on the transfer plate.

7. The electronic pen according to claim 6, wherein: The device further includes a conductive spring connected between the first electrode and the transfer plate.

8. The electronic pen according to claim 7, wherein: The first electrode includes a body portion and a boss provided on the body portion, wherein the boss extends along the circumference of the body portion and separates the body portion into a first body segment and a second body segment; The first body section extends into the clamping seat and abuts against the pen tip; The conductive spring is sleeved on the second body segment and connected to the boss.

9. The electronic pen according to claim 8, wherein: The pen holder includes a rod body and a stopper, wherein the rod body forms the mounting cavity, the stopper is arranged on a side wall of the mounting cavity, and the stopper has a first through hole for the first body segment to pass through; The clamping seat abuts against a side of the stop portion close to the pen tip; When the first electrode slides toward the side close to the pen tip, the boss can be stopped at the end of the stopping portion away from the pen tip.

10. The electronic pen according to claim 9, wherein: It also includes a conductive ring, the conductive ring is electrically connected to the transfer plate, the conductive ring is sleeved on the outside of the clamping seat and abuts against the pen tip; A limiting portion is further provided inside the rod body. The limiting portion is provided closer to the pen tip than the stop portion. A second through hole is formed on the limiting portion for the conductive ring to pass through and is opposite to the first through hole. At least a portion of the conductive ring is confined between the stop portion and the limiting portion.

11. The electronic pen according to claim 10, wherein: It also includes a detection spring, which is sleeved on the conductive ring and electrically connected to the transfer plate.

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