An electronic pen

Abstract

The present invention proposes an electronic pen, which includes a pen body, an inner frame and a pen head. The inner frame is installed inside the pen body, and the front end of the pen body is provided with a pen head, which is connected to the bottom of the inner frame. A charging interface is provided on the top of the inner frame, and the charging end of the charging interface faces the outside of the pen body. The charging interface is welded on a charging board. A main control board is carried in the inner frame, and the main control board is located below the charging board. Electronic components are arranged on the charging board and the main control board. The electronic components on the charging board and the electronic components on the main control board are connected through a conductive mechanism. A key shrapnel is provided at the bottom of the charging board, and the curved side of the key shrapnel abuts against the top of the main control board. The charging board drives the key shrapnel and the main control board to be squeezed under the action of an external force. The charging interface and the key are combined together to enrich the functions of the electronic pen, and the internal space of the electronic pen can also be saved, making the structure more compact.

Description

Technical Field

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

[0002] With the improvement of technology and quality of life, more and more smart devices are appearing in people's daily work and life, and touch devices are one of them. People can operate directly on the display screen through touch devices, without the need for a mouse or other devices for wired or wireless operation, which is convenient and fast. At the same time, writing devices that can write on touch devices have also emerged. People can write on touch devices as freely as using a pen by using writing devices.

[0003] Most of the current writing devices are active devices, which means that they need to have built-in disposable batteries or be charged to provide power for the normal operation of the writing device. However, if disposable batteries are used, the overall structure of the writing device will be too complicated, and frequent battery replacement will also cause trouble for users. If charging is used, a charging port needs to be opened on the pen body, which makes the overall shape of the pen body inconsistent and unsightly, and also increases the production process and cost. Summary of the invention

[0004] To solve one of the above technical problems, the present invention provides an electronic pen.

[0005] An embodiment of the present invention provides an electronic pen, which comprises a pen body, an inner frame and a pen tip, wherein the inner frame is installed inside the pen body, a pen tip is arranged at the front end of the pen body, a part of the pen tip is exposed to the outside of the pen body, and another part of the pen body is located inside the pen body, the pen tip is connected to the bottom of the inner frame, a charging interface is arranged at the top of the inner frame, a charging end of the charging interface faces the outside of the pen body, the charging interface is welded to a charging board, a main control board is carried in the inner frame, and the main control board is located below the charging board, electronic components are arranged on the charging board and the main control board, the electronic components on the charging board and the electronic components on the main control board are connected through a conductive mechanism, a key spring is arranged at the bottom of the charging board, a curved surface side of the key spring is abutted against the top of the main control board, and the charging board drives the key spring and the main control board to be squeezed under the action of external force.

[0006] Preferably, the electronic components on the charging board are connected to the electronic components on the main control board through an elastic conductive mechanism. Under the action of external force, the charging board drives the button spring and the main control board to be squeezed, and the charging board rebounds to its initial position under the action of the elastic conductive mechanism.

[0007] Preferably, the elastic conductive mechanism is fixed on the board surface of the main control board, the elastic conductive mechanism includes a plurality of spring probes with the same structure, the spring probe includes a fixing part and a spring part, the fixing part and the spring part are both made of conductive materials, the fixing part is a columnar structure, the side wall of the fixing part is fixed on the board surface of the main control board, and the length direction of the fixing part is parallel to the length direction of the main control board, the fixing part is electrically connected to the electronic components on the main control board, the bottom of the spring part is fixed to the top of the fixing part, the top of the spring part is connected to the charging board and electrically connected to the electronic components on the charging board, and the spring part can be extended and retracted under the action of external force.

[0008] Preferably, the pen tip includes a nib portion, a connecting portion and a pressure-sensing portion, the nib portion is connected to an inner frame inside the pen body through the connecting portion, the connecting portion includes a bearing portion and a connecting tube, the bearing tube is open at the bottom and closed at the top, the top edge of the bearing tube extends outward to make the bearing tube T-shaped, the pressure-sensing portion is arranged at the top of the T-shaped bearing tube, the pressure-sensing portion is used to detect pressure information transmitted by the bearing tube, the connecting tube is sleeved on the bearing tube, the connecting tube is fixedly connected to the inner frame inside the pen body, the bearing tube can move up and down inside the connecting tube, when the bearing tube moves upward inside the connecting tube, the top of the bearing tube contacts the pressure-sensing portion, when the bearing tube moves downward inside the connecting tube, the top lower edge of the bearing tube abuts against the top upper edge of the connecting tube, one end of the nib portion is inserted into the interior of the bearing tube, and the other end of the nib portion is exposed to the outside of the pen body.

[0009] Preferably, a snap-in hole is provided on the side wall of the carrying tube, and a snap-in groove is provided on the pen tip portion. When the pen tip portion is inserted into the carrying tube, the snap-in groove corresponds to the snap-in hole. The connecting portion also includes a snap-in cylinder, which is sleeved on the carrying tube and located below the connecting cylinder. A snap-in protrusion is provided on the inner wall of the snap-in cylinder, and the snap-in protrusion is abutted against the snap-in groove of the pen tip portion through the snap-in hole.

[0010] Preferably, the clamping groove is an arc-shaped groove, and the end point of the clamping protrusion is processed with a chamfer that matches the clamping groove.

[0011] Preferably, an elastic component is provided between the connecting tube and the clamping tube, the elastic component is compressed when the pen tip moves toward the pressure sensing portion under the action of external force, and pushes the pen tip back to an initial position when the pen tip is not acted upon by external force.

[0012] Preferably, the inner frame includes a front cover and a rear cover, the front cover and the rear cover are connected by a snap fastener, a main control board and a battery are carried between the front cover and the rear cover, at least one key operation hole is opened on the front cover, a key operation part is arranged in the key operation hole, the key operation part includes a movable part and a stable part, an edge of the movable part is fixedly connected to one end of the stable part, the other end of the stable part is fixedly connected to the inner wall of the key operation hole, a key contact is arranged at the bottom of the movable part, and the movable part is recessed downward under the action of external force.

[0013] Preferably, the electronic pen also includes a dust cover cap, which includes a cap body and a connector, wherein the connector is fixed to the outer wall of the pen body, the connector and the cap body are flexibly connected, the cap body is buckled on the charging end of the charging interface, and the cap body can be detached from the charging end of the charging interface under the action of external force.

[0014] Preferably, the electronic pen also includes a pen cap, which is buckled on the pen head, and a convex point is provided on the inner wall of the end of the pen cap, and a concave point is provided on the outer wall of the pen body. When the pen cap is buckled on the pen head, the convex point is engaged with the concave point, and a storage bin is provided at the front end of the pen cap, and a Bluetooth adapter is stored in the storage bin.

[0015] The beneficial effects of the present invention are as follows: the present invention places the charging interface conventionally arranged on the side wall of the pen body at the rear end of the pen body, making the overall appearance of the pen body more streamlined and more convenient to process and assemble. At the same time, the charging interface is combined with the button to enrich the functions of the electronic pen, and the internal space of the electronic pen can also be saved, making the structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A schematic diagram of the appearance structure of the electronic pen according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 AA section view;

[0019] Figure 3 for Figure 1 Left view of;

[0020] Figure 4 for Figure 3 BB section view;

[0021] Figure 5for Figure 2 A partial enlarged view of the middle C part;

[0022] Figure 6 for Figure 4 A partial enlarged view of the middle D part;

[0023] Figure 7 A schematic diagram of a connection relationship between a charging interface and a main control board according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of another connection relationship between the charging interface and the main control board according to an embodiment of the present invention;

[0025] Fig. 9 A schematic diagram of the connection relationship between the charging interface and the main control board from another perspective according to an embodiment of the present invention;

[0026] Fig.10 It is a structural schematic diagram of the conductive mechanism according to an embodiment of the present invention;

[0027] Fig.11 This is a schematic diagram of the structure of the dust cap according to an embodiment of the present invention;

[0028] Fig.12 A schematic diagram of the structure of a pen tip according to an embodiment of the present invention;

[0029] Fig.13 for Fig.12 Right view of;

[0030] Fig.14 for Fig.13 AA section view;

[0031] Fig.15 for Fig.14 A partial enlarged view of the middle M part;

[0032] Fig.16 Another structural schematic diagram of the pen tip according to an embodiment of the present invention;

[0033] Fig.17 for Fig.16 Right view of;

[0034] Fig.18 for Fig.17 BB section view;

[0035] Fig.19 for Fig.18 A partial enlarged view of the middle N part;

[0036] Fig. 20 Another structural schematic diagram of the pen tip according to an embodiment of the present invention;

[0037] Fig.21 for Fig. 20 Right view of;

[0038] Fig. 22 for Fig.21 CC section view;

[0039] Fig.23 for Fig. 22 A partial enlarged view of the middle P part;

[0040] Fig.24 It is a front structural schematic diagram of the front cover according to an embodiment of the present invention;

[0041] Fig.25 It is a schematic diagram of the reverse structure of the front cover according to an embodiment of the present invention;

[0042] Fig.26 It is a schematic diagram of the front structure of the back cover according to an embodiment of the present invention;

[0043] Fig. 27 It is a schematic diagram of the reverse structure of the back cover according to an embodiment of the present invention;

[0044] Fig.28 It is a schematic diagram of the overall structure of the front side of the inner frame;

[0045] Fig.29 This is a schematic diagram of the overall structure of the reverse side of the inner frame;

[0046] Fig.30 for Fig.25 A partial enlarged view of the middle Q section;

[0047] Fig.31 This is another schematic diagram of the appearance structure of the electronic pen according to an embodiment of the present invention;

[0048] Fig.32 for Fig.31 sectional view of

[0049] Fig.33 for Fig.32 A partial enlarged view of the middle R part.

[0050] Reference numerals:

[0051] 1. Pen tip, 2. Pen body, 3. Charging port, 4. Charging board, 5. Main control board, 6. Conductive mechanism, 7. Button spring, 8. Protrusion, 9. Dust cover, 10. Inner frame, 11. Pen cap, 12. Bluetooth adapter;

[0052] 1-1, pen tip, 1-2, connecting part, 1-3, pressure sensing part, 1-4, elastic component;

[0053] 1-2-1, bearing tube, 1-2-2, connecting tube, 1-2-3, clamping tube;

[0054] 6-1, fixing part, 6-2, spring part;

[0055] 9-1, cap body, 9-2, connector, 9-3, hook;

[0056] 10-1, front cover, 10-2, rear cover;

[0057] 10-1-1, movable part, 10-1-2, stable part, 10-1-3, key contact. DETAILED DESCRIPTION

[0058] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application are further described in detail in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Furthermore, in order to provide a clearer description and make it easier to understand the present application, the parts in the drawings are not drawn according to their relative sizes, and some sizes have been exaggerated compared to other related scales; irrelevant details are not fully drawn to simplify the drawings.

[0059] Example 1

[0060] like Figures 1 to 33 As shown, this embodiment proposes an electronic pen, which includes a pen body 2, an inner frame 10 and a pen head 1, and the inner frame 10 is installed inside the pen body 2. The front end of the pen body 2 is provided with a pen head 1, a part of which is exposed to the outside of the pen body 2, and the other part is located inside the pen body 2. The pen head 1 is connected to the bottom of the inner frame 10, and the top of the inner frame 10 is provided with a charging interface 3, and the charging end of the charging interface 3 faces the outside of the pen body 2. The charging interface 3 is welded on the charging board 4. The inner frame 10 carries a main control board 5, and the main control board 5 is located below the charging board 4. Electronic components are evenly arranged on the charging board 4 and the main control board 5. The electronic components on the charging board 4 and the electronic components on the main control board 5 are connected through a conductive mechanism 6. A key spring 7 is provided at the bottom of the charging board 4. The curved side of the key spring 7 is against the top of the main control board 5. Under the action of external force, the charging board 4 drives the key spring 7 and the main control board 5 to be squeezed.

[0061] Specifically, in this embodiment, the electronic pen includes three parts: a pen body 2, an inner frame 10 and a pen tip 1. The pen tip 1 is arranged at the front end of the pen body 2, and is fixedly or detachably connected to the inner frame 10 arranged inside the pen body 2. A charging interface 3 is arranged at the end of the pen body 2, and the charging end of the charging interface 3 faces the outside of the pen body 2. The charging interface 3 is welded on the charging board 4. The charging board 4 is provided with relevant electronic components that enable the charging interface 3 to charge the battery in the pen body 2. A main control board 5 is arranged inside the pen body 2, and the main control board 5 is fixed in the inner frame 10. The main control board 5 is provided with electronic components that can realize the basic functions of the electronic pen. The main control board 5 and the charging board 4 are electrically connected through a conductive mechanism 6, so that the electronic components on the main control board 5 can be electrically connected with the electronic components on the charging board 4 to realize signal transmission. A key shrapnel 7 is arranged between the main control board 5 and the charging board 4. The key shrapnel 7 is welded on the charging board 4, and electronic components that can realize the functions related to the key shrapnel 7 are arranged on the charging board 4. The key shrapnel 7 is divided into a flat side and a curved side. The flat side is welded on the charging board 4, and the curved side is against the top of the main control board 5. In this way, when the user presses the charging interface 3, the charging interface 3 is forced to drive the charging board 4, and then the curved side of the key shrapnel 7 at the bottom of the charging board 4 is squeezed with the top of the main control board 5, so that the key shrapnel 7 is forced to conduct, so as to realize the corresponding function of the key shrapnel 7.

[0062] Further, in order to make the contact between the main control board 5 and the key shrapnel 7 more stable, and to make the curved side of the key shrapnel 7 deform sufficiently to make the key shrapnel 7 internally conductive when the main control board 5 and the key shrapnel 7 are squeezed, the top center of the main control board 5 is raised upward to form a protrusion 8 in this embodiment. The protrusion 8 and the main control board 5 can be integrally formed. The top of the protrusion 8 can be a plane or a curved surface that fits the curved side of the key shrapnel 7. The center of the protrusion 8 should coincide with the center of the key shrapnel 7, so that the key shrapnel 7 is more evenly stressed when it is squeezed with the protrusion 8, thereby ensuring a good pressure effect. In addition, a contact portion can also be separately provided at the center position of the top of the main control board 5. The contact portion is a columnar structure, such as a cylinder, a cuboid, a cone, etc. The separate provision of the contact portion can make the diameter of the contact portion larger than the thickness of the main control board 5, so that the top of the contact portion can be more fully contacted with the curved side of the key shrapnel 7. The top of the contact portion can also be a plane or a curved surface that matches the curved surface side of the key spring 7. In addition, the center of the top of the contact portion should also coincide with the center of the key spring 7.

[0063] In addition, in this embodiment, in order to facilitate the effective and reasonable use of the space inside the pen body 2, the length direction of the board surface of the main control board 5 is parallel to the length direction of the pen body 2, and the board surface of the charging board 4 is perpendicular to the board surface of the main control board 5. The main control board 5 arranged parallel to the length direction of the pen body 2 can achieve the best layout area of ​​electronic components. The charging board 4 only needs to be arranged with electronic components related to the key shrapnel 7 of the charging interface 3. Therefore, the size of the charging board 4 is relatively small, and only needs to be the same as or smaller than the width or diameter of the electronic pen.

[0064] In this embodiment, the conductive mechanism 6 can be an elastic conductive mechanism 6. A portion of the elastic conductive mechanism 6 is fixed on the main control board 5, and another portion is fixed on the charging board 4, and the elastic conductive mechanism 6 can be electrically connected to the electronic components on the main control board 5 and the charging board 4. When the charging board 4 is subjected to downward pressure applied by the user to the charging interface 3, the key spring 7 at the bottom of the charging board 4 is squeezed with the main control board 5. In this process, the elastic conductive mechanism 6 arranged between the main control board 5 and the charging board 4 will also be forced to shrink. When the user removes the pressure applied to the charging interface 3, the elastic conductive mechanism 6 will apply force to the charging board 4 in the reverse direction, so that the charging board 4 rebounds to its initial position under the action of the elastic conductive mechanism 6.

[0065] Specifically, the elastic conductive mechanism 6 includes a plurality of spring probes of the same structure, and the spring probe includes a fixed portion 6-1 and a spring portion 6-2, and the fixed portion 6-1 and the spring portion 6-2 are both made of conductive materials. The fixed portion 6-1 is a columnar structure, such as a cylinder, a cuboid, a cone, etc. The side of the fixed portion 6-1 is fixed on the board surface of the main control board 5, and the length direction of the fixed portion 6-1 is parallel to the length direction of the main control board 5. The fixed portion 6-1 can be electrically connected to the electronic components on the main control board 5. The bottom of the spring portion 6-2 is fixed to the top of the fixed portion 6-1. The top of the spring portion 6-2 is connected to the board surface of the charging board 4 and is electrically connected to the electronic components on the charging board 4. An elastic material with a certain elastic coefficient, such as a spring, rubber, etc., is embedded in the spring portion 6-2. The spring portion 6-2 can be extended and retracted under the action of an external force. Therefore, when the charging plate 4 is subjected to force, the spring portion 6-2 in the spring conductive mechanism 6 will also be compressed by the force applied by the charging plate 4. When the charging plate 4 is not subjected to force, the spring conductive mechanism 6 will also rebound the charging plate 4 to its initial position due to the spring characteristics of the spring portion 6-2.

[0066] In this embodiment, the spring portion 6-2 in the spring conductive mechanism 6 can be directly welded to the surface of the charging plate 4, or can be connected to the charging plate 4 by plugging. The welding method is the most direct and effective, and the plugging method is more conducive to assembly, which can be selected according to actual conditions.

[0067] In addition, current electronic pens, including other electronic accessories, are equipped with buttons. However, after long-term use, it will be found that the button cap will shake or tilt in a static state. This is an undesirable phenomenon caused by pressing the button multiple times or for a long time. In order to avoid this situation, the present embodiment is provided with at least one pair of spring probes between the main control board 5 and the charging board 4. This embodiment is illustrated by setting two pairs of spring probes as an example. The two pairs of spring probes can be set at the top corners on both sides of the main control board 5, and can also be adjusted according to the size of the charging board 4. The two pairs of spring probes are on the same plane, so that the charging interface 3 can maintain a stable state when not subject to external force or in a static state. It will also make the charging interface 3 more evenly stressed during the rebound to the initial position, so as to enhance the user experience.

[0068] In this embodiment, since the charging end of the charging interface 3 faces the outside of the pen body 2, it is exposed to the outside air. When used for a long time, dust is easily accumulated inside, which will cause poor contact between the charging interface 3 and the external charger. Based on this, this embodiment is also provided with a dust cap 9 at the charging interface 3. The dust cap 9 can be directly buckled on the charging end of the charging interface 3, and the user can selectively remove the dust cap 9. In addition, in order to prevent the user from losing the dust cap 9, the dust cap 9 can also be divided into two parts, the cap body 9-1 and the connector 9-2, in this embodiment. Among them, the cap body 9-1 can still be buckled or removed from the charging end of the charging interface 3, and the connector 9-2 connects the pen body 2 and the cap body 9-1. In this way, even if the user detaches the cap body 9-1 from the charging end of the charging interface 3, the connection between the dust cap 9 and the pen body 2 as a whole can still be ensured and will not be lost.

[0069] At the same time, some users may not be used to having a dust cap 9 on the electronic pen, or may feel that the dust cap 9 is in the way when charging. In this embodiment, a hook 9-3 may be provided on the connector 9-2 of the dust cap 9, and a through hole may be provided at a corresponding position of the pen body 2. Then the hook 9-3 is inserted into the through hole, and the dust cap 9 is combined with the pen body 2 through the hook 9-3. In this way, the user can decide whether to remove the dust cap 9 according to his or her own preferences.

[0070] In this embodiment, the tip of the pen tip 1 can be chamfered to avoid scratching the screen of the touch device. At the same time, the pen tip 1 can also be made of wear-resistant and sound-absorbing materials. The pen tip 1 and the inner frame 10 are connected by a connecting portion 1-2. The connecting portion 1-2 includes a bearing tube 1-2-1 and a connecting tube 1-2-2. The bottom of the bearing tube 1-2-1 is open and the top is closed, and the overall shape is T-shaped. A pressure sensing portion 1-3 is provided on the top of the T-shaped bearing tube 1-2-1. The connecting tube 1-2-2 is sleeved on the bearing tube 1-2-1 so that the bearing tube 1-2-1 can move up and down inside the connecting tube 1-2-2. The connecting tube 1-2-2 is connected to the inner frame 10 inside the pen body 2. One end of the pen tip 1-1 is inserted into the inside of the bearing tube 1-2-1, and the other end is exposed to the outside of the pen body 2.

[0071] On the basis of the above structure, in this embodiment, a snap-in hole is provided on the side wall of the carrier tube 1-2-1, and a snap-in groove is provided on the nib portion 1-1. When the nib portion 1-1 is inserted into the interior of the carrier tube 1-2-1, the snap-in hole can correspond to the snap-in groove. A snap-in tube 1-2-3 is also sleeved on the carrier tube 1-2-1, and the snap-in tube 1-2-3 is located below the connecting tube 1-2-2. A snap-in protrusion extending laterally is provided on the inner wall of the connecting tube 1-2-2. When the nib portion 1-1 is inserted into the inner wall of the carrier tube 1-2-1, the snap-in protrusion can pass through the snap-in hole and abut against the snap-in groove of the nib portion 1-1, thereby fixing the nib portion 1-1 in the carrier tube 1-2-1 by snapping, and preventing the nib portion 1-1 from falling off from the carrier tube 1-2-1.

[0072] Since the tip of the pen tip 1-1 will continuously contact and rub against the touch device during use by the user, it will wear out or even break after long-term use. Therefore, in order to meet the needs of users, the pen tip 1-1 needs to be replaced. In this embodiment, although the pen tip 1-1 is fixed in the carrier tube 1-2-1 by snapping, the snapping groove can be set as an arc-shaped groove, and the end point of the snapping protrusion is processed with a chamfer that matches the snapping groove. The arc-shaped groove surface and the chamfer of the snapping protrusion make it easy for the user to pull the pen tip 1-1 out of the carrier tube 1-2-1, and at the same time, the pen tip 1-1 will not fall off from the carrier tube 1-2-1 without the action of external force.

[0073] In addition, this embodiment also provides an elastic component 1-4 between the connecting tube 1-2-2 and the clamping tube 1-2-3. The elastic component 1-4 can be compressed when the pen tip 1-1 moves toward the pressure-sensitive portion 1-3 under the action of an external force, and pushes the pen tip 1-1 back to its initial position when the pen tip 1-1 is not acted upon by an external force. The elastic component 1-4 can be made of elastic materials such as a spring or silicone. In this way, when the electronic pen moves within a spatial range and the pen tip 1-1 is not acted upon by an external force, the pen tip 1-1 will not shake in the length direction of the electronic pen, thereby affecting the user's use.

[0074] For the convenience of assembly and the stability of connection, in this embodiment, the cross-section of the connecting tube 1-2-2 can be L-shaped, and the L-shape can be decomposed into a vertical tube and a horizontal tube. The top lower edge of the T-shaped bearing tube 1-2-1 can be stuck on the top surface of the vertical tube. A mounting through hole is provided at a position corresponding to the inner tube and the connecting tube 1-2-2. The vertical tube part of the connecting tube 1-2-2 is inserted into the inner tube, and the upper surface of the horizontal tube part can be connected to the lower surface of the inner tube. The connection between the horizontal tube and the inner tube can be glue, screw connection, etc.

[0075] In the process of pressure detection, in order to keep the detection result accurate, it is necessary to ensure that the pen tip 1-1, the connecting part 1-2 and the pressure-sensing part 1-3 are in the same line, so that the overall pressure is more concentrated. In this embodiment, the pen tip 1-1 is inserted into the supporting tube 1-2-1 to ensure the collinearity between the pen tip 1-1 and the supporting tube 1-2-1; the connecting tube 1-2-2 is sleeved on the supporting tube 1-2-1 to ensure the collinearity between the connecting tube 1-2-2 and the supporting tube 1-2-1; in the above manner, the pen head 1 is arranged in a collinear manner from the end point of the pen tip 1-1 to the pressure-sensing part 1-3.

[0076] In this embodiment, the inner frame 10 includes a front cover 10-1 and a rear cover 10-2, and the front cover 10-1 and the rear cover 10-2 are connected by a buckle. A connection structure that can be fixed to the pen head 1 is provided at one end of the front cover 10-1 and the rear cover 10-2 near the pen head 1. A main control board 5 and a battery are carried between the front cover 10-1 and the rear cover 10-2. The battery can provide power for the realization of the basic functions of the electronic pen. The battery can be a disposable battery that can be detached from the inner frame 10, or it can be a rechargeable battery that can be charged through the charging interface 3. Of course, if the battery needs to be detachable from the inner frame 10, the structure of the inner frame 10 needs to be designed to adapt to the detachable conditions of the battery. A key operation hole is opened on the front cover 10-1 of the inner frame 10. The number of the key operation holes can be determined according to the number of keys required for the actual function of the electronic pen. A key can be provided below the key operation hole. A key operation part is provided in the key operation hole. The key operation part includes a movable part 10-1-1 and a stable part 10-1-2. The movable part 10-1-1 can be set to a round pancake shape so that the user can operate it with fingers. The edge of the movable part 10-1-1 is fixedly connected to one end of the stable part 10-1-2, and the other end of the stable part 10-1-2 is fixedly connected to the inner wall of the key operation hole. A key contact 10-1-3 is set at the bottom of the movable part 10-1-1. When an external force acts on the movable part 10-1-1, such as a finger, the movable part 10-1-1 will be concave downward, so that the key contact 10-1-3 at the bottom of the movable part 10-1-1 triggers the key set below the key operation hole.

[0077] In this embodiment, a cap 11 is further provided at the front end of the pen tip 1. The inner wall of the end of the cap 11 is provided with a convex point, and the outer wall of the pen body 2 is provided with a concave point. When the cap 11 is buckled on the pen tip 1, the convex point can be engaged with the concave point, which plays a role in fixing the cap 11. At the same time, a storage compartment is provided at the front end of the cap 11, and a Bluetooth adapter 12 can be stored in the storage compartment. The electronic pen can be connected to an external device through the Bluetooth adapter 12.

[0078] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An electronic pen, characterized in that: The electronic pen comprises a pen body, an inner frame and a pen tip, wherein the inner frame is installed inside the pen body, a pen tip is arranged at the front end of the pen body, a charging interface is arranged at the rear end of the pen body, a part of the pen tip is exposed to the outside of the pen body, and another part of the pen tip is located inside the pen body, the pen tip is connected to the bottom of the inner frame, the charging interface is arranged at the top of the inner frame, the charging end of the charging interface faces the outside of the pen body, the charging interface is welded on a charging board, a main control board is carried in the inner frame, and the main control board is located below the charging board, electronic components are arranged on the charging board and the main control board, the electronic components on the charging board and the electronic components on the main control board are connected through a conductive mechanism, a key spring is arranged at the bottom of the charging board, the curved surface side of the key spring is against the top of the main control board, and the charging board drives the key spring and the main control board to be squeezed under the action of external force.

2. The electronic pen according to claim 1, characterized in that: The electronic components on the charging board are connected to the electronic components on the main control board via an elastic conductive mechanism. Under the action of an external force, the charging board drives the key springs and the main control board to be squeezed, and the charging board rebounds to its initial position under the action of the elastic conductive mechanism.

3. The electronic pen according to claim 2, characterized in that: The elastic conductive mechanism is fixed on the board surface of the main control board. The elastic conductive mechanism includes a plurality of spring probes with the same structure. The spring probe includes a fixing part and a spring part. Both the fixing part and the spring part are made of conductive materials. The fixing part is a columnar structure. The side wall of the fixing part is fixed on the board surface of the main control board, and the length direction of the fixing part is parallel to the length direction of the main control board. The fixing part is electrically connected to the electronic components on the main control board. The bottom of the spring part is fixed to the top of the fixing part. The top of the spring part is connected to the board surface of the charging board and is electrically connected to the electronic components on the charging board. The spring part can be extended and retracted under the action of external force.

4. The electronic pen according to claim 1, characterized in that: The pen tip includes a nib portion, a connecting portion and a pressure-sensing portion, wherein the nib portion is connected to an inner frame inside the pen body through the connecting portion, the connecting portion includes a carrying tube and a connecting tube, the carrying tube is open at the bottom and closed at the top, the top edge of the carrying tube extends outward to make the carrying tube T-shaped, the pressure-sensing portion is arranged at the top of the T-shaped carrying tube, the pressure-sensing portion is used to detect pressure information transmitted by the carrying tube, the connecting tube is sleeved on the carrying tube, the connecting tube is fixedly connected to the inner frame inside the pen body, the carrying tube can move up and down inside the connecting tube, when the carrying tube moves upward inside the connecting tube, the top of the carrying tube contacts the pressure-sensing portion, when the carrying tube moves downward inside the connecting tube, the top lower edge of the carrying tube abuts against the top upper edge of the connecting tube, one end of the nib portion is inserted into the interior of the carrying tube, and the other end of the nib portion is exposed to the outside of the pen body.

5. The electronic pen according to claim 4, characterized in that: A snap-in hole is provided on the side wall of the supporting tube, and a snap-in groove is provided on the pen tip. When the pen tip is inserted into the supporting tube, the snap-in groove corresponds to the snap-in hole. The connecting part also includes a snap-in cylinder, which is sleeved on the supporting tube and located below the connecting cylinder. A snap-in protrusion is provided on the inner wall of the snap-in cylinder, and the snap-in protrusion is abutted against the snap-in groove of the pen tip through the snap-in hole.

6. The electronic pen according to claim 5, characterized in that: The clamping groove is an arc-shaped groove, and the end point of the clamping protrusion is processed with a chamfer that matches the clamping groove.

7. The electronic pen according to claim 4 or 5, characterized in that: An elastic component is arranged between the connecting tube and the clamping tube. The elastic component is compressed when the pen tip moves toward the pressure sensing part under the action of external force, and pushes the pen tip back to the initial position when the pen tip is not acted upon by external force.

8. The electronic pen according to claim 1, characterized in that: The inner frame includes a front cover and a back cover, the front cover and the back cover are connected by a snap buckle, a main control board and a battery are carried between the front cover and the back cover, at least one key operation hole is opened on the front cover, a key operation part is arranged in the key operation hole, the key operation part includes a movable part and a stable part, an edge of the movable part is fixedly connected to one end of the stable part, the other end of the stable part is fixedly connected to the inner wall of the key operation hole, a key contact is arranged at the bottom of the movable part, and the movable part is recessed downward under the action of external force.

9. The electronic pen according to claim 1, characterized in that: The electronic pen also includes a dust cover cap, which includes a cap body and a connector, wherein the connector is fixed to the outer wall of the pen body, the connector and the cap body are flexibly connected, the cap body is buckled on the charging end of the charging interface, and the cap body can be detached from the charging end of the charging interface under the action of external force.

10. The electronic pen according to claim 1, characterized in that: The electronic pen also includes a pen cap, which is buckled on the pen head, and a convex point is arranged on the inner wall of the end of the pen cap, and a concave point is arranged on the outer wall of the pen body. When the pen cap is buckled on the pen head, the convex point is engaged with the concave point. A storage bin is arranged at the front end of the pen cap, and a Bluetooth adapter is stored in the storage bin.

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