Electronic pen

Abstract

The invention relates to the technical field of terminals, and discloses an electronic pen, comprising: a penholder having a first accommodating cavity, one end of the penholder having an opening, the opening communicating with the first accommodating cavity; the pen point is positioned on one side of the opening; the first electrode is arranged in the first accommodating cavity in a penetrating manner; the pen point is detachably connected with the first electrode through the opening; the second electrode is fixedly connected with the pen holder, and at least part of the second electrode is arranged in the first containing cavity in a penetrating mode; the second electrode sleeves the outer side of the first electrode and is spaced from the first electrode. According to the technical scheme, the first electrode and the second electrode are designed to be of an independent structure, the pen point and the pen holder are connected into a whole, machining and manufacturing are easy, the assembling mode is simple and reliable, and the yield is increased.

Description

Technical Field

[0001] The present invention relates to the field of terminal technology, and in particular to an electronic pen. Background Art

[0002] An electronic pen is a device that combines pen and paper writing with digital technology. It is usually used as a digital handwriting input tool that can record the user's handwriting in real time and convert it into digital form for storage or transmission to a computer or other device. An electrode assembly is generally provided in an electronic pen for transmitting or receiving signals. At present, electrode assemblies are usually integrated into a component by injection molding, electroplating, etc., but such electrode assemblies often need to undergo multiple injection molding and electroplating processes. The multiple integrated processes make its production and processing difficult and the yield rate low. Summary of the invention

[0003] In view of this, the present invention provides an electronic pen to solve the problems of greater difficulty in production and processing of electrode components and lower yield rate.

[0004] In the first aspect, the present invention provides an electronic pen, comprising: a pen shaft, having a first accommodating cavity, and an opening at one end of the pen shaft, the opening being connected to the first accommodating cavity; a pen tip, located on one side of the opening; a first electrode, inserted into the first accommodating cavity; the pen tip is detachably connected to the first electrode through the opening; a second electrode, fixedly connected to the pen shaft, and at least part of its structure is inserted into the first accommodating cavity; the second electrode is sleeved on the outside of the first electrode and spaced apart from the first electrode.

[0005] Optionally, the pen tip includes a conductive piece and a pen tip shell, one end of the conductive piece is connected to the pen tip shell, and the other end is detachably connected to the first electrode; the side of the pen tip shell facing the pen shaft has an annular groove, which extends circumferentially around the conductive piece and is spaced apart from the conductive piece; the second electrode is sleeved on the outside of the conductive piece, and at least part of the structure of the second electrode is embedded in the annular groove to be spaced apart from the conductive piece.

[0006] Optionally, an annular boss is formed at the opening of the pen shaft, and the second electrode includes a first tube body and a second tube body, and the first tube body is coaxially connected to the second tube body; at least part of the structure of the first tube body is located outside the first accommodating cavity, and the second tube body is located in the first accommodating cavity, and the first tube body and the second tube body are respectively abutted against two sides of the annular boss to be fixed on the pen shaft.

[0007] Optionally, the electronic pen also includes: a first support member, located in the first accommodating cavity; the first support member has a second accommodating cavity connected to the first accommodating cavity, and at least part of the structure of the second tube body is located in the second accommodating cavity; an insulating ring, the insulating ring is arranged in the second accommodating cavity and is sleeved on the outside of the second tube body to isolate the first support member and the second tube body.

[0008] Optionally, the electronic pen further includes a third electrode, which is disposed on the insulating ring and spaced apart from the second tube body.

[0009] Optionally, the electronic pen also includes: a first support member, located in the first accommodating cavity; the first support member has a second accommodating cavity connected to the first accommodating cavity; a third tube body, located in the first accommodating cavity and fixedly connected to the end of the first support member away from the pen tip; the third tube body has a third accommodating cavity connected to the second accommodating cavity; a second support member, located in the third accommodating cavity and connected to the third tube body; at least part of the structure of the first electrode is located in the third accommodating cavity and connected to the second support member.

[0010] Optionally, the second support member has a mounting groove, and at least part of the structure of the first electrode is located in the mounting groove; the electronic pen also includes: a main board member, located on a side of the first electrode away from the bottom wall of the mounting groove; the main board member is electrically connected to the first electrode and the second electrode; a plurality of connecting members, passing through the second support member, the first electrode and the main board member, to fix the second support member, the first electrode and the main board member in connection; the connecting members are electrically connected to the ground end of the main board member.

[0011] Optionally, the electronic pen further includes: a first insulating member, which is disposed in the mounting groove and located between the first electrode and the second supporting member; and a second insulating member, which is located between the first electrode and the main board member.

[0012] Optionally, the second support member, the first insulating member, the first electrode, the second insulating member and the main member jointly form a plurality of connecting holes, and the plurality of connecting members are respectively inserted into the plurality of connecting holes; the connecting holes include a first connecting hole and a second connecting hole, the first connecting hole is formed in the second support member, and the second connecting hole is formed in the first electrode; wherein the second support member is provided with a first annular protrusion extending around the first connecting hole, and the first annular protrusion extends toward the second connecting hole; the connecting member is connected to the first annular protrusion; the first insulating member is provided with a second annular protrusion, the second annular protrusion extends toward the second connecting hole, and is surrounded by the outside of the first annular protrusion.

[0013] Optionally, the electronic pen further includes a sensor, which is located in the third accommodating cavity and respectively connected to the third tube body and the second support member; the sensor is connected to the first electrode through the second support member to sense the force transmitted by the first electrode, and the sensor is electrically connected to the main board member.

[0014] Optionally, the sensor and the third tube body are integrally formed.

[0015] Optionally, the sensing member includes: a deformation portion, the deformation portion includes an overlapping section and a deformation section that are connected, the overlapping section and the deformation section are arranged to intersect; the overlapping section is fixedly connected to the second support member, and one end of the deformation section away from the overlapping section is connected to the third tube body; the first electrode transmits the force to the deformation section through the second support member and the overlapping section to cause the deformation section to deform; and a sensing portion, connected to the deformation section, for sensing the force information on the deformation section.

[0016] By using the technical solution of the present invention, the second electrode is fixed on the pen body, the first electrode is arranged in the first accommodating cavity of the pen body, and is connected to the pen tip through the opening to form an integrated structure. The electronic pen thus arranged, by designing the first electrode and the second electrode as independent structures, and connecting the pen tip and the pen body as an integrated structure, does not need to adopt multiple integration processes, and can form an electrode assembly through simple assembly, which is easy to process and manufacture, and reduces production costs; and the assembly method is simple and reliable, and improves the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a cross-sectional view of a partial structure of an electronic pen according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0020] Figure 3 is a schematic structural diagram of a second electrode according to an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a first electrode according to an embodiment of the present invention;

[0022] Figure 5 A schematic diagram of a partial structure of an electronic pen according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic structural diagram of a first support member according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic structural diagram of an insulating ring according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of assembling a first support member and a third tube body according to an embodiment of the present invention;

[0026] Fig. 9 This is a schematic structural diagram of a second support member and a bracket according to an embodiment of the present invention;

[0027] Fig.10 It is a schematic structural diagram of a first insulating member according to an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Penholder; 1a. First accommodating cavity; 1b. Opening; 1c. First conical section; 1d. Annular boss;

[0030] 2. nib; 21. conducting member; 211. ball head; 212. rod; 22. nib housing; 221. annular groove;

[0031] 3. First support member; 30. Second accommodating cavity; 31. Second tapered section; 32. Main section; 33. Connecting section; 331. Card slot; 34. Sink;

[0032] 4, first electrode; 41, first connecting portion; 411, countersunk hole; 42, fixing portion; 421, second connecting hole;

[0033] 5. Second electrode; 51. First tube body; 511. Straight part; 512. Tapered part; 52. Second tube body; 521. Large diameter part; 522. Small diameter part;

[0034] 6. Insulating ring; 61. First ring body; 62. Flange;

[0035] 7. third tube body; 70. third accommodating cavity; 71. clamping block; 72. bracket; 721. second ring body; 722. second connecting part;

[0036] 8. second support member; 811. mounting groove; 812. first connecting hole; 813. first annular protrusion; 814. third connecting portion;

[0037] 9. Mainboard components;

[0038] 10. Connectors;

[0039] 11. first insulating member; 110. third connecting hole; 111. second annular protrusion;

[0040] 12. A second insulating member;

[0041] 13. sensing element; 131. deformation portion; 1311. overlapping section; 1312. deformation section; 132. sensing portion;

[0042] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0044] Electronic pens are widely used in the fields of tablet computers, office computers, mobile phones, etc. Existing electronic pens generally include electrode components for transmitting and receiving signals. The electrode components generally include transmitting electrodes, receiving electrodes and other structures. The transmitting electrode transmits signals, and the receiving electrode receives signals. In terms of structure, the transmitting electrode has a metal part built into the tip of the electronic pen as the transmitting end of the transmitting electrode. This metal part is connected to the transmitting electrode, and the transmitting electrode is connected to the main board through FPC (Flexible Printed Circuit) and other forms. When working, the main board transmits an electrical signal to the metal part in the tip of the pen. This metal part is generally a metal ball head. The metal ball head forms an electric field. The change of the electric field is read by the host end (tablets and other devices) to generate a writing and drawing reaction. In terms of structure, the receiving electrode is also connected to the main board with an elastic metal conductive structure such as a spring and the FPC. When working, the receiving electrode receives the electric field change signal from the host end and transmits it to the main board, causing the electronic pen to respond. The receiving electrode can also be used as a transmitting electrode, so that the host end detects the tilt of the pen and reflects the different thicknesses of the pen writing.

[0045] At present, the electrode components of related technologies are usually integrated into one component through injection molding, electroplating, etc., and then the electrode circuit is connected to the mainboard through structures such as springs or FPC. When the electrode component is injection molded, different processing materials need to be injected into the mold. The injection molding process is difficult and prone to wrong operations, resulting in the electrode component becoming a defective product with a low yield rate.

[0046] In view of this, the present application provides an electronic pen to overcome at least one of the above technical problems. Figures 1 to 10 , describing an embodiment of the present invention.

[0047] According to an embodiment of the present invention, an electronic pen is provided. Figure 1 As shown, the electronic pen includes a pen body 1 , a pen tip 2 arranged at one end of the pen body 1 , and a first electrode 4 and a second electrode 5 arranged in the pen body 1 .

[0048] Specifically, the pen body 1 has a first accommodating cavity 1a, and the first accommodating cavity 1a extends along the first direction X; and one end of the pen body 1 along the first direction X has an opening 1b, and the opening 1b is connected to the first accommodating cavity 1a. The pen tip 2 is located at one end of the pen body 1 along the first direction X, specifically on one side of the opening 1b of the pen body 1. Among them, the first direction X specifically refers to the length direction of the pen body 1. The first electrode 4 is inserted into the first accommodating cavity 1a, specifically inserted into the first accommodating cavity 1a along the first direction X. The pen tip 2 is detachably connected to the first electrode 4 through the opening 1b. The second electrode 5 is fixedly connected to the pen body 1, and at least part of the structure of the second electrode 5 is inserted into the first accommodating cavity 1a. The second electrode 5 is sleeved on the outside of the first electrode 4 and is spaced apart from the first electrode 4.

[0049] In this embodiment, the second electrode 5 is fixed on the pen body 1, and the first electrode 4 is arranged in the first accommodating cavity 1a of the pen body 1, and is connected to the pen tip 2 through the opening 1b as an integrated structure. The electronic pen configured in this way, by designing the first electrode 4 and the second electrode 5 as independent structures, and using the pen tip 2 and the pen body 1 to achieve integration, does not need to adopt multiple integration processes, and can form an electrode assembly through simple assembly, which is easy to process and manufacture, and reduces production costs; and the assembly method is simple and reliable, and improves the yield rate.

[0050] It can be understood that in this embodiment, the first electrode 4 can be a transmitting electrode, and the connection between the pen tip 2 and the first electrode 4 can ensure the sensitive response of the first electrode 4 to the pressure applied by the pen tip 2. The second electrode 5 can be a receiving electrode, and the second electrode 5 is fixed on the pen shaft 1, so the second electrode 5 will not be tilted or moved due to the movement of the pen tip 2, thereby improving the reliability of the electronic pen.

[0051] For ease of description, the extension direction of the pen holder 1 is defined as a first direction X, and a direction perpendicular to the first direction X is defined as a second direction Y. In some cases, the first direction X is the central axis direction of the pen holder 1 , and the second direction Y is the radial direction of the pen holder 1 .

[0052] In some embodiments, Figure 2As shown, an annular boss 1d is formed at the opening 1b of the pen holder 1. The second electrode 5 includes a first tube body 51 and a second tube body 52, and the first tube body 51 is coaxially connected with the second tube body 52. ​​Among them, at least part of the structure of the first tube body 51 is located outside the first accommodating cavity 1a, and the second tube body 52 is located inside the first accommodating cavity 1a. The first tube body 51 and the second tube body 52 are respectively abutted against the two sides of the annular boss 1d, so that the second electrode 5 is fixed on the pen holder 1. The second electrode 5 arranged in this way has a simple structure and is convenient for assembling the electronic pen. Exemplarily, the first tube body 51 and the second tube body 52 can be detachably connected to facilitate the disassembly and assembly of the second electrode 5, such as threaded connection, clamping, etc. Of course, in some embodiments not shown, the first tube body 51 and the second tube body 52 can also be fixedly connected, such as fixed by crimping, or the first tube body 51 and the second tube body 52 are integrally formed.

[0053] In some embodiments, Figure 2 and 3 As shown, the first tube body 51 includes a straight portion 511 and a tapered portion 512. The straight portion 511 is inserted into the first accommodating cavity 1a through the opening 1b, and the tapered portion 512 is located outside the first accommodating cavity 1a. The second tube body 52 is located in the first accommodating cavity 1a and is detachably connected to the straight portion 511.

[0054] Specifically, in some embodiments, along the first direction X, the cross-sectional shape of the straight portion 511 is the same as the shape of the opening 1b of the pen holder 1, and along the second direction Y, the setting size of the straight portion 511 matches the setting size of the opening 1b to ensure the stability of the structure and avoid the shaking of parts. Exemplarily, the opening 1b of the pen holder 1 is circular, the straight portion 511 is cylindrical, and the outer diameter of the straight portion 511 is the same as the inner diameter of the opening 1b.

[0055] Furthermore, the radial dimension of the tapered portion 512 gradually decreases in the direction away from the straight portion 511. The connection between the straight portion 511 and the tapered portion 512 forms an annular abutting surface, which abuts against the outer side surface of the annular boss 1d. The end surface of the second tube body 52 close to one end of the first tube body 51 abuts against the inner side surface of the annular boss 1d.

[0056] Further, in some embodiments, along the second direction Y, the setting size of the second tube body 52 is larger than the setting size of the straight portion 511, and the second tube body 52 is coaxially sleeved on the outside of the straight portion 511. Exemplarily, the second tube body 52 and the straight portion 511 can be threaded or clamped. Exemplarily, the second tube body 52 includes a smoothly connected large diameter portion 521 and a small diameter portion 522, the small diameter portion 522 is sleeved on the outside of the straight portion 511, and the small diameter portion 522 abuts against the inner side surface of the annular boss 1d; the large diameter portion 521 is located on the side of the small diameter portion 522 away from the annular boss 1d.

[0057] It can be understood that the first tube body 51 and the second tube body 52 are coaxially arranged, and a through hole is formed along the axial direction, and the first electrode 4 is inserted into the through hole. The second tube body 52 adopts a large diameter part and a small diameter part arrangement mode, which increases the radial size of the through hole, facilitates the arrangement of the first electrode 4, and ensures that the first electrode 4 and the second electrode 5 can be arranged at intervals.

[0058] Exemplarily, the side of the pen body 1 close to the opening 1b has a first conical section 1c, and accordingly, the end of the small diameter portion 522 close to the annular boss 1d may also be conical to match the inner wall shape of the first conical section 1c to improve the stability of the structure.

[0059] Furthermore, in some embodiments, Figure 2 As shown, the pen tip 2 includes a conductive member 21 and a pen tip housing 22, one end of the conductive member 21 is connected to the pen tip housing 22, and the other end is detachably connected to the first electrode 4. Specifically, the conductive member 21 is a metal member, and the pen tip housing 22 is an insulating member. The side of the pen tip housing 22 facing the pen body 1 has an annular groove 221, and the annular groove 221 extends around the circumference of the conductive member 21 and is spaced apart from the conductive member 21. The second electrode 5 is sleeved on the outside of the conductive member 21, that is, the first tube body 51 and the second tube body 52 are sleeved on the outside of the conductive member 21. At least part of the structure of the second electrode 5 is embedded in the annular groove 221, specifically, at least part of the structure of the first tube body 51 is embedded in the annular groove 221, so as to be spaced apart from the conductive member 21. In this embodiment, at least part of the second electrode 5 is embedded in the annular groove 221 , which limits the second electrode 5 in radial direction, so that the second electrode 5 is isolated from the conductive member 21 and the first electrode 4 connected to the conductive member 21 .

[0060] Exemplarily, the first tube body 51 includes the straight portion 511 and the tapered portion 512, the straight portion 511 is connected to the second tube body 52, the tapered portion 512 is located between the pen tip housing 22 and the pen holder 1, and at least part of the tapered portion 512 is embedded in the annular groove 221. Accordingly, the annular groove 221 is a tapered groove, and the radial dimension of the annular groove 221 gradually decreases in the direction away from the second electrode 5.

[0061] Exemplarily, the conductive member 21 and the first electrode 4 may be connected by threads, clamps, etc.

[0062] Exemplarily, the conductive member 21 may be a solid metal member, and the conductive member 21 includes a ball head 211 and a rod 212 connected to each other. Among them, at least part of the structure of the ball head 211 and the rod 212 is embedded in the pen tip shell 22, and the rod 212 is inserted into the first accommodating cavity 1a and is detachably connected to the first electrode 4. The pen tip shell 22 may be a plastic member, and the pen tip shell 22 may be obtained by an injection molding process. Among them, the pen tip shell 22 may be injection-molded on the outside of the ball head 211 and the rod 212. In order to ensure the connection strength between the conductive member 21 and the pen tip shell 22, a concave-convex structure may be provided at the connection between the conductive member 21 and the pen tip shell 22.

[0063] In some embodiments, the electronic pen further includes a supporting structure, which is inserted into the first accommodating cavity 1a and fixedly connected to the pen holder 1, and the first electrode 4 is connected to the supporting structure to be fixedly disposed in the first accommodating cavity 1a.

[0064] The support structure includes a first support member 3, and the first support member 3 is located in the first accommodation cavity 1a. The first support member 3 has a second accommodation cavity 30 connected to the first accommodation cavity 1a. At least part of the structure of the first electrode 4 is disposed in the second accommodation cavity 30, and at least part of the structure of the second electrode 5 is disposed in the second accommodation cavity 30. Specifically, at least part of the structure of the second tube 52 of the second electrode 5 is located in the second accommodation cavity 30.

[0065] Furthermore, the electronic pen further includes an insulating ring 6, which is disposed in the second accommodating cavity 30 and sleeved on the outside of the second tube 52 to isolate the first support member 3 from the second tube 52. The insulating ring 6 is disposed between the first support member 3 and the second tube 52 to ensure that the second electrode 5 always keeps a distance from the first support member 3, thereby ensuring the safety of the overall structure.

[0066] In some embodiments, the first support member 3 is substantially cylindrical, and the first support member 3, the insulating ring 6, the first electrode 4, and the second electrode 5 are coaxially arranged to ensure the safety and reliability of the structure. Preferably, the first support member 3, the insulating ring 6, the first electrode 4, the second electrode 5 are coaxially arranged with the pen tip 2 and the pen holder 1, and the axial direction of each component is also the first direction X, and the radial direction is also the second direction Y.

[0067] In some embodiments, the insulating ring 6 is connected to the first support member 3 to ensure the stability of the relative position. The insulating ring 6 and the first support member 3 can be fixedly connected or detachably connected.

[0068] Preferably, the insulating ring 6 is detachably connected to the first support member 3. Figure 7 As shown, the insulating ring 6 includes a first ring body portion 61 and a flange portion 62 arranged at one axial end of the first ring body portion 61, and a sink 34 is formed at the end of the first support member 3 away from the second electrode 5. The first ring body portion 61 is inserted into the second accommodating cavity 30 of the first support member 3, and the flange portion 62 abuts against the sink 34.

[0069] For example, Figure 5 and 6 As shown, the first support member 3 includes a second tapered section 31, a main section 32 and a connecting section 33 which are sequentially connected in the axial direction. The second tapered section 31 is in the shape of a cone to match the inner wall of the first tapered section 1c of the pen holder 1 for easy installation. The main section 32 is in the shape of a cylindrical tube, and the second tapered section 31 and the main section 32 together form the above-mentioned second accommodating cavity 30. The connecting section 33 is arranged on the outer peripheral side of the main section 32 and extends in the direction away from the second tapered section 31, and the connecting section 33 and the main section 32 together form the above-mentioned sinking platform 34.

[0070] In some embodiments, the electronic pen further includes a third electrode, which is disposed on the insulating ring 6 and spaced apart from the second tube 52. The third electrode can play a role in strengthening the signal function of the first electrode 4 or the second electrode 5, so as to further improve the function and performance of the electronic pen. The present invention does not specifically limit the location of the third electrode on the insulating ring 6, as long as it is spaced apart from the second electrode 5 and plays a role in signal strengthening. Exemplarily, the third electrode can be integrated on the isolation ring by electroplating or the like.

[0071] Furthermore, the support structure further includes a third tube body 7 and a second support member 8, wherein the third tube body 7 is located in the first accommodating cavity 1a and is fixedly connected to the end of the first support member 3 away from the pen tip 2; the third tube body 7 has a third accommodating cavity 70 connected to the second accommodating cavity 30. The second support member 8 is located in the third accommodating cavity 70 and is connected to the third tube body 7. At least part of the structure of the first electrode 4 is located in the third accommodating cavity 70 and is connected to the second support member 8, and at least part of the structure of the first electrode 4 extends into the second accommodating cavity 30. The third tube body 7 is connected to the pen holder 1, such as by clamping, welding, bolting, etc. It can be understood that the first support member 3 and the third tube body 7 are arranged in sequence along the first direction X, and the first support member 3 is located at the end of the pen holder 1 close to the pen tip 2.

[0072] The present invention does not specifically limit the fixed connection method between the third tube body 7 and the first support member 3. The third tube body 7 and the first support member 3 can be connected by clamping, bonding by dispensing or welding. Exemplarily, the first support member 3 includes the above-mentioned connecting section 33, and at least one clamping groove 331 is provided on the outer peripheral side of the connecting section 33; accordingly, the third tube body 7 is coaxially arranged with the first support member 3, and at least one clamping block 71 is convexly provided on the side of the third tube body 7 close to the first support member 3, and the clamping block 71 is clamped in the clamping groove 331. The arrangement of the clamping groove 331 and the clamping block 71 can prevent the third tube body 7 and the first support member 3 from relative rotation or radial movement, ensuring that the third tube body 7 and each structure in the first support member 3 have a stable relative position, thereby improving the safety and reliability of the overall structure.

[0073] In some embodiments, the second support member 8 has a mounting groove 811, and at least part of the structure of the first electrode 4 is located in the mounting groove 811. Specifically, the first electrode 4 includes a first connecting portion 41 and a fixing portion 42 connected in sequence along the first direction X, wherein the first connecting portion 41 is detachably connected to the pen tip 2, specifically detachably connected to the conductive member 21 of the pen tip 2. Exemplarily, a countersunk hole 411 is provided on one side of the first connecting portion 41 facing the conductive member 21, and the conductive member 21 can be bolted into the countersunk hole 411, or snapped into the countersunk hole 411. The fixing portion 42 is located in the above-mentioned mounting groove 811, and is fixedly connected to the second support member 8.

[0074] The second support member 8 may be directly connected to the third tube body 7 , or connected via a bracket 72 .

[0075] For example, Fig. 9As shown, the third tube body 7 also includes a bracket 72, which is located in the third accommodating cavity 70 and connected between the third tube body 7 and the second support member 8. Specifically, the bracket 72 is located on the side of the third tube body 7 and the second support member 8 close to the first support member 3. The bracket 72 includes a second ring body portion 721 and a second connecting portion 722 connected to each other, wherein the second ring body portion 721 is located between the second support member 8 and the first support member 3, the fixing portion 42 of the first electrode 4 is fixed in the mounting groove 811 of the second support member 8, and the first connecting portion 41 is penetrated in the first support member 3, that is, in the second accommodating cavity 30 through the center hole of the second ring body portion 721. Among them, the second connecting portion 722 is connected to one side of the second ring body portion 721 in the radial direction, and extends along the first direction X, and the second connecting portion 722 is connected to the inner wall of the third tube body 7. Exemplarily, the second connecting portion 722 can be in the shape of an arc plate and is adapted to the inner wall curved surface of the third tube body 7. Exemplarily, the second connection portion 722 may be welded or bolted to the third tube body 7 .

[0076] In some embodiments, the electronic pen further includes a main board component 9 and a plurality of connecting components 10. The main board component 9 is located on a side of the first electrode 4 away from the bottom wall of the mounting groove 811, that is, above the mounting groove 811. The main board component 9 is electrically connected to both the first electrode 4 and the second electrode 5. The plurality of connecting components 10 pass through the second support component 8, the first electrode 4 and the main board component 9 along the second direction Y to fix the second support component 8, the first electrode 4 and the main board component 9. The connecting component 10 is electrically connected to the grounding end of the main board component 9. In this embodiment, the connecting component 10 not only realizes the fixed connection between the main board component 9, the first electrode 4 and the second support component 8, thereby improving the integrity and stability of the electronic pen structure, but also plays a grounding role. It can be understood that in some embodiments, the electronic pen includes a third electrode, which is also electrically connected to the main board component 9.

[0077] The present invention does not specifically limit the connection method of the first electrode 4, the second electrode 5, the third electrode and the main board component 9, as long as they can function as electrical connections. Taking the electrical connection between the second electrode 5 and the main board component 9 as an example, a metal elastic member can be used to compress the metal elastic member between the main board component 9 and the second electrode 5 to achieve electrical connection between the second electrode 5 and the main board component 9.

[0078] Furthermore, in some embodiments, the electronic pen further includes a first insulating member 11 and a second insulating member 12, wherein the first insulating member 11 is disposed in the mounting groove 811 and between the first electrode 4 and the second support member 8, and the first electrode 4 is insulated from the second support member 8 by the first insulating member 11. The second insulating member 12 is disposed between the first electrode 4 and the main board member 9, and the first electrode 4 is insulated from the main board member 9 by the second insulating member 12, and the second insulating member 12 also supports the main board member 9 and strengthens the structure.

[0079] In some embodiments, the main board component 9, the second insulating component 12, the first electrode 4, the first insulating component 11 and the second support component 8 are stacked in sequence along the second direction Y. The second support component 8, the first insulating component 11, the first electrode 4, the second insulating component 12 and the main board component 9 together form a plurality of connection holes, and the plurality of connectors 10 are respectively inserted into the plurality of connection holes.

[0080] Among them, Figure 4 , Fig. 9 and Fig.10 As shown, the connection hole includes a first connection hole 812, a second connection hole 421 and a third connection hole 110. The first connection hole 812 is formed in the second support member 8, specifically on the bottom wall of the mounting groove 811, the second connection hole 421 is formed in the first electrode 4, and the third connection hole 110 is formed in the first insulating member 11.

[0081] Exemplarily, the second support member 8 is provided with a first annular protrusion 813 extending around the first connection hole 812, the first annular protrusion 813 extends toward the second connection hole 421, and the connector 10 is connected in the first annular protrusion 813 to achieve grounding. Exemplarily, the connector 10 and the first annular protrusion 813 can be threaded, clamped, etc. The first insulating member 11 is provided with a second annular protrusion 111 extending around the third connection hole 110, the second annular protrusion 111 extends toward the second connection hole 421, and is surrounded by the outside of the first annular protrusion 813. The second annular protrusion 111 is blocked between the inner wall of the second connection hole 421 and the first annular protrusion 813 to prevent the second support member 8 from contacting the first electrode 4.

[0082] Exemplarily, at least part of the structure of the first annular boss 1d and the second annular protrusion 111 is embedded in the second connecting hole 421, the second annular boss 1d is blocked and arranged between the second connecting hole 421 and the first annular boss 1d, and the second annular boss 1d abuts against the inner wall of the second connecting hole 421 to position the first electrode 4.

[0083] Furthermore, in some embodiments, the electronic pen further includes a sensor 13, which is located in the third accommodating cavity 70 and is respectively connected to the third tube 7 and the second support member 8. The sensor 13 is connected to the first electrode 4 through the second support member 8 to sense the force transmitted by the first electrode 4; and the sensor 13 is electrically connected to the main board. When the electronic pen is writing, the pen tip 2 is connected to the first electrode 4, and the first electrode 4 is connected to the sensor 13 through the second support member 8. The pen tip 2 transmits the force received to the sensor 13 through the first electrode 4, and the force information transmitted by the first electrode 4 is sensed by the sensor 13, and then the sensed information is transmitted to the main board member 9 connected thereto, and the main board member 9 processes the information. Specifically, a third connecting portion 814 is provided on the side of the second support member 8 away from the first support member 3, and the sensor 13 is installed on the second support member 8 through the third connecting portion 814, which has a simple structure and low production difficulty.

[0084] Exemplarily, the sensor 13 includes a deformation portion 131 and a sensing portion 132, the deformation portion 131 includes a connected overlap section 1311 and a deformation section 1312, the overlap section 1311 extends along the first direction X, and is fixedly connected to the second support member 8, and can be connected to the third connection portion 814 of the second support member 8 in the form of bolts, buckles, etc., so that the first electrode 4 can transfer the force to the overlap section 1311 through the second support member 8. The deformation section 1312 is arranged to intersect with the overlap section 1311. Preferably, the deformation section 1312 extends along the second direction Y, and one end of the deformation section 1312 away from the overlap section 1311 is connected to the third tube body 7. The first electrode 4 transfers the force to the deformation section 1312 through the second support member 8 and the overlap section 1311, so that the deformation section 1312 is deformed. It is equivalent to connecting one side of the deformation section 1312 to the overlapping section 1311 and the other side to the third tube body 7. When the overlapping section 1311 receives the force from the second support member 8, it will transfer the force to the deformation section 1312, so that the deformation section 1312 is deformed. At the same time, the sensing part 132 is connected to the deformation section 1312. The sensing part 132 can be a strain gauge, which is generally attached to the deformation section 1312. The sensing part 132 will deform with the deformation of the deformation section 1312. It is usually made of sensitive materials, such as a film or a metal foil. When subjected to external force, the sensing part 132 will deform accordingly, resulting in changes in its resistance, capacitance or inductance and other characteristics. The sensing part 132 is used to sense the force information on the deformation section 1312, and then convert it into an electrical signal and transmit it to the main board component 9 for processing.

[0085] More specifically, the sensor 13 can be connected to the third tube 7 by welding, bonding or abutting, or the sensor 13 can be integrally formed with the third tube 7. Preferably, the sensor 13 and the third tube 7 are integrally formed, the connection reliability is high, and the production process of the electronic pen is simplified, and the production efficiency is improved. More specifically, the above-mentioned deformation part 131 of the sensor 13 is integrally formed with the third tube 7, and the induction part 132 is connected to the deformation section 1312 of the deformation part 131.

[0086] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An electronic pen, characterized in that: include: A pen holder having a first accommodating cavity, and one end of the pen holder having an opening, the opening being in communication with the first accommodating cavity; a pen tip, located at one side of the opening; A first electrode is disposed in the first accommodating cavity; the pen tip is detachably connected to the first electrode through the opening; The second electrode is fixedly connected to the pen holder, and at least a part of the structure is inserted into the first accommodating cavity; the second electrode is sleeved on the outside of the first electrode and is spaced apart from the first electrode.

2. The electronic pen according to claim 1, characterized in that: The pen tip comprises a conducting member and a pen tip shell, one end of the conducting member is connected to the pen tip shell, and the other end is detachably connected to the first electrode; the pen tip shell has an annular groove on one side facing the pen holder, the annular groove extends around the circumference of the conducting member and is spaced apart from the conducting member; The second electrode is sleeved on the outer side of the conductive member, and at least a part of the structure of the second electrode is embedded in the annular groove so as to be spaced apart from the conductive member.

3. The electronic pen according to claim 1, characterized in that: An annular boss is formed at the opening of the pen holder; The second electrode includes a first tube body and a second tube body, the first tube body is coaxially connected to the second tube body; at least part of the structure of the first tube body is located outside the first accommodating cavity, and the second tube body is located inside the first accommodating cavity; the first tube body and the second tube body are respectively abutted against both sides of the annular boss to be fixed on the pen shaft.

4. The electronic pen according to claim 3, characterized in that: The electronic pen also includes: A first support member is located in the first accommodating cavity; the first support member has a second accommodating cavity communicated with the first accommodating cavity, and at least a part of the structure of the second tube body is located in the second accommodating cavity; An insulating ring is disposed in the second accommodating cavity and sleeved on the outside of the second tube body to isolate the first support member and the second tube body.

5. The electronic pen according to claim 4, characterized in that: The electronic pen further comprises a third electrode, which is arranged on the insulating ring and spaced apart from the second tube body.

6. The electronic pen according to any one of claims 1 to 5, characterized in that: The electronic pen also includes: A first support member is located in the first accommodating cavity; the first support member has a second accommodating cavity communicating with the first accommodating cavity; A third tube body is located in the first accommodating cavity and is fixedly connected to an end of the first supporting member away from the pen tip; the third tube body has a third accommodating cavity communicated with the second accommodating cavity; The second support member is located in the third accommodating cavity and connected to the third tube body; at least a part of the structure of the first electrode is located in the third accommodating cavity and connected to the second support member.

7. The electronic pen according to claim 6, characterized in that: The second support member has a mounting groove, and at least a part of the structure of the first electrode is located in the mounting groove; The electronic pen also includes: A main board component is located on a side of the first electrode away from the bottom wall of the mounting groove; the main board component is electrically connected to the first electrode and the second electrode; A plurality of connecting members penetrate through the second supporting member, the first electrode and the main board member to fix and connect the second supporting member, the first electrode and the main board member; the connecting members are electrically connected to the ground terminal of the main board member.

8. The electronic pen according to claim 7, characterized in that: The electronic pen also includes: A first insulating member, disposed in the mounting groove and located between the first electrode and the second supporting member; The second insulating component is located between the first electrode and the main board component.

9. The electronic pen according to claim 8, characterized in that: The second support member, the first insulating member, the first electrode, the second insulating member and the main member together form a plurality of connection holes, and the plurality of connecting members are respectively inserted into the plurality of connection holes; The connection hole comprises a first connection hole and a second connection hole, the first connection hole is formed in the second support member, and the second connection hole is formed in the first electrode; Among them, the second supporting member is provided with a first annular protrusion extending around the first connecting hole, and the first annular protrusion extends toward the second connecting hole; the connecting member is connected to the first annular protrusion; the first insulating member is provided with a second annular protrusion, and the second annular protrusion extends toward the second connecting hole and is surrounded by the outside of the first annular protrusion.

10. The electronic pen according to claim 7, characterized in that: The electronic pen also includes a sensor component, which is located in the third accommodating cavity and respectively connected to the third tube body and the second supporting component; the sensor component is connected to the first electrode through the second supporting component to sense the force transmitted by the first electrode; and the sensor component is electrically connected to the main board component.

11. The electronic pen according to claim 10, characterized in that: The sensor and the third tube are integrally formed.

12. The electronic pen according to claim 10 or 11, characterized in that: The sensing element comprises: A deformation portion, wherein the deformation portion comprises an overlapping section and a deformation section connected to each other, wherein the overlapping section and the deformation section are arranged to intersect each other; the overlapping section is fixedly connected to the second support member, and one end of the deformation section away from the overlapping section is connected to the third tube body; the first electrode transmits a force to the deformation section through the second support member and the overlapping section, so that the deformation section is deformed; The sensing part is connected to the deformation section and is used for sensing the force information applied to the deformation section.

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