Electronic pen

Abstract

The embodiment of the utility model provides an electronic pen. The electronic pen includes a housing; the erasing assembly is located at one end of the shell and connected with the shell, and the erasing assembly can deform in the radial direction of the shell relative to the shell; the strain detection assembly comprises a strain detection element, a deformation part and a fixing support, the fixing support is connected with the erasing assembly, the fixing support is used for installing the deformation part, and at least part of the strain detection element is attached to the deformation part; when the erasing assembly deforms relative to the shell in the radial direction of the shell, the strain detection element is used for detecting deformation of the deformation part. According to the electronic pen, the deformation stroke of the electronic pen is increased through deformation of the erasing assembly in the radial direction of the shell, when the erasing assembly deforms relative to the shell in the radial direction of the shell, deformation of the deformation part can be detected through the strain detection element, and then the use experience feeling of the electronic pen is improved.

Description

Technical Field

[0001] This utility model relates to the field of mobile intelligent writing device technology, and in particular to an electronic pen. Background Technology

[0002] An electronic pen is a tool used to control electronic devices such as mobile phones and computers with capacitive touchscreens. Currently, to enable the erasing function of electronic pens, an erasing component is usually provided at the end of the pen. However, due to the limitations of the structure of the erasing component and the strain detection component during erasing, the travel distance of the strain detection component is limited by the deformation of the erasing component, which reduces the erasing experience. Utility Model Content

[0003] To solve or partially solve the above problems, this utility model discloses an electronic pen to address the issue of poor erasing experience caused by the limited stroke of the strain detection component due to the deformation of the erasing component in the prior art.

[0004] To address the above problems, this utility model provides an electronic pen, which includes:

[0005] case;

[0006] An erasing assembly, located at one end of the housing and connected to the housing, the erasing assembly being deformable relative to the housing in the radial direction of the housing;

[0007] A strain detection assembly includes a strain detection element, a deformation element, and a fixing bracket. The fixing bracket is connected to the erasure assembly and is used to mount the deformation element. At least a portion of the strain detection element is attached to the deformation element.

[0008] When the erasing assembly deforms relative to the housing in the radial direction of the housing, the strain detection element is used to detect the deformation of the deformed part.

[0009] Optionally, the electronic pen includes a main circuit board located inside the housing, one side of the deformable element is connected to the fixed bracket, the other side is connected to the housing, and the strain detection element is connected to the main circuit board.

[0010] Optionally, the deformation member includes two first strain plates extending axially along the housing, and the two first strain plates are arranged radially spaced along the housing;

[0011] The strain detection element is attached to at least a portion of each of the two first strain plates.

[0012] Optionally, the strain detection assembly includes a detachably connected mounting bracket and a wiping head, wherein the wiping head is located on the outer wall of the mounting bracket, and the fixing bracket is installed inside the mounting bracket;

[0013] A first inner liner support and a fixing seat are provided on the inner wall of the end of the housing;

[0014] The end of the mounting bracket is inserted into the first inner liner bracket, the fixing seat is embedded in the inner cavity of the mounting bracket, and the end of the fixing bracket away from the housing includes a limiting plate;

[0015] The deformable component further includes two first pressure plates and a second pressure plate, and each of the first pressure plates and the second pressure plate extends radially along the housing. The two ends of the second pressure plate are respectively connected to a first strain plate, and the end of each first strain plate away from the second pressure plate is respectively connected to a first pressure plate. The first pressure plate abuts against the end face of the fixed seat facing the fixed bracket, and the second pressure plate abuts against the limiting plate.

[0016] Optionally, the deformable element includes a second strain plate;

[0017] The second strain plate extends along the axial direction of the housing, and the strain detection element is attached to at least one surface of the second strain plate.

[0018] Optionally, the strain detection assembly includes a detachably connected mounting bracket and a wiping head, wherein the wiping head is located on the outer wall of the mounting bracket, and the fixing bracket is detachably connected to the inside of the mounting bracket;

[0019] The fixed bracket includes a bracket body, a connecting seat, and an inner liner support. The bracket body is detachably connected to the interior of the mounting bracket. The inner liner support is disposed on the inner wall of the end of the housing. The end of the mounting bracket is inserted into the inner liner support. The connecting seat is connected to the interior of the bracket body and is disposed opposite to the inner liner support in the axial direction of the housing.

[0020] One end of the second strain plate in the axial direction of the housing abuts against the inner liner support, and the other end of the second strain plate in the axial direction of the housing abuts against the connecting seat.

[0021] Optionally, the erasing head is made of an elastic material.

[0022] Optionally, the electronic pen may also include coding electrodes and signal transmission components;

[0023] Both the coding electrode and the signal transmitting component extend along the axial direction of the housing. The coding electrode is installed inside the fixed bracket. The first end of the signal transmitting component is connected to the end of the coding electrode, and the second end of the signal transmitting component is connected to the main circuit board. The first end and the second end are the two opposite ends of the signal transmitting component in the axial direction of the housing.

[0024] Optionally, the deformation member includes two first strain plates extending axially along the housing, and the two first strain plates are arranged radially spaced along the housing;

[0025] The signal transmitting element extends axially along the housing and is disposed between the two first strain plates.

[0026] Optionally, the fixing bracket includes a cavity, the strain detection element includes a sensing end located in the cavity, and the deformation element is at least partially in contact with the sensing end;

[0027] There is a gap in the radial direction between the sensing end and the inner wall of the cavity in the housing.

[0028] In this embodiment, since the erasing component can deform relative to the housing in the radial direction, it can have a deformation stroke in the radial direction. Furthermore, since the strain detection component includes a strain detection element, a deformation member, and a fixing bracket, with the fixing bracket connected to the erasing component and used to mount the deformation member, and at least a portion of the strain detection element is attached to the deformation member, when the erasing component deforms relative to the housing in the radial direction, it can cause the fixing bracket to also deform in the radial direction, causing the deformation member to also deform in the radial direction of the deformed housing. This allows the deformation of the erasing component in the radial direction of the housing to be fed back through the deformation of the deformation member. In summary, the electronic pen provided in this application increases the deformation stroke of the electronic pen by allowing the erasing component to deform in the radial direction of the housing. Moreover, when the erasing component deforms relative to the housing in the radial direction, the deformation of the deformation member can be detected by the strain detection element, thereby improving the user experience of the electronic pen. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1This is a schematic diagram of the structure of an electronic pen provided in an embodiment of this utility model;

[0031] Figure 2 This utility model provides an embodiment of an electronic pen with a [feature / feature]. Figure 1 A schematic diagram of the cross-sectional structure along the A-A direction;

[0032] Figure 3 This utility model provides an electronic pen in... Figure 2 A magnified view of point M in the diagram;

[0033] Figure 4 This is a schematic diagram of the exploded structure of an electronic pen provided in an embodiment of this utility model;

[0034] Figure 5 This is a schematic diagram of the assembly structure of an electronic pen including a circuit board and a deformable component according to an embodiment of the present invention;

[0035] Figure 6 This utility model provides an electronic pen in... Figure 5 A magnified view of point N in the diagram;

[0036] Figure 7 This is a schematic diagram of the structure of an electronic pen including a second inner liner bracket and a fixing base according to an embodiment of the present utility model;

[0037] Figure 8 This is an exploded view of the erasing component included in an electronic pen according to an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the structure of a fixed bracket included in an electronic pen provided by an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of another electronic pen provided in an embodiment of the present invention;

[0040] Figure 11 This is another electronic pen edge provided in this embodiment of the utility model. Figure 10 A schematic diagram of the cross-sectional structure along the B-B direction;

[0041] Figure 12 This is another electronic pen provided in this embodiment of the utility model. Figure 2 A magnified view of point O in the diagram;

[0042] Figure 13 This is another exploded view of the electronic pen provided in this embodiment of the present invention;

[0043] Figure 14This is a schematic diagram of the structure of an erasing component included in another electronic pen provided in this embodiment of the present invention;

[0044] Figure 15 This is a schematic diagram of the structure of a fixed bracket included in another electronic pen provided by an embodiment of the present invention;

[0045] Figure 16 This is an assembly diagram of the sensing components included in another electronic pen provided by this utility model embodiment.

[0046] Explanation of reference numerals in the attached figures:

[0047] 1: Housing; 11: First inner liner support; 12: Fixing seat; 2: Erasing assembly; 21: Mounting bracket; 211: Support body; 2111: First slot; 212: Second inner liner support; 22: Erasing head; 221: Insertion protrusion; 222: Shoulder structure; 3: Strain detection assembly; 31: Strain detection element; 311: Sensing part; 32: Deformation element; 321: First strain plate; 322: Second strain plate; 323: First pressure plate; 324: Second pressure plate; 33: Fixing bracket; 331: Limiting plate; 332: Support body; 333: Connecting seat; 334: Inner liner support; 34: Mounting cylinder; 4: Marking electrode; 5: Signal transmission element; 6: Main circuit board; Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0050] like Figures 1 to 16 As shown, this embodiment of the present invention provides an electronic pen, comprising:

[0051] Shell 1.

[0052] Erasing component 2 is located at one end of housing 1 and connected to housing 1. Erasing component 2 can deform relative to housing 1 in the radial direction of housing 1.

[0053] The strain detection assembly 3 includes a strain detection element 31, a deformation element 32, and a fixing bracket 33. The fixing bracket 33 is connected to the erasure assembly 2 and is used to install the deformation element 32. At least a portion of the strain detection element 31 is attached to the deformation element 32.

[0054] When the erasing component 2 deforms relative to the housing 1 in the radial direction of the housing 1, the strain detection element 3 is used to detect the deformation of the deformed component 32.

[0055] As can be seen from the above embodiments, in this application embodiment, since the erasing assembly 2 can deform relative to the housing 1 in the radial direction of the housing 1, the erasing assembly 2 can have a deformation stroke in the radial direction of the housing 1. Furthermore, since the strain detection assembly 3 includes a strain detection element 31, a deformation member 32, and a fixing bracket 33, and the fixing bracket 33 is connected to the erasing assembly 2 and is used to mount the deformation member 32, and at least a portion of the strain detection element 31 is attached to the deformation member 32, when the erasing assembly 2 deforms relative to the housing 1 in the radial direction of the housing 1, it can drive the fixing bracket 33 to also deform in the radial direction of the housing 1, causing the deformation member 32 to also deform in the radial direction of the deformed housing 1. On the one hand, the electronic pen provided in this application increases the deformation stroke of the electronic pen by deforming the erasing component 2 in the radial direction of the housing, thereby simulating the feel of using a real eraser; on the other hand, when the erasing component 2 deforms relative to the housing 1 in the radial direction of the housing 1, the deformation of the deformation component 32 can be detected by the strain detection element 31, thereby activating the erasing function of the erasing component 2. Overall, the user experience of the electronic pen is improved.

[0056] In the above embodiments, the shell 1 can be a cylindrical shell structure, a square shell structure, or a shell structure of other shapes; this application does not limit this. The shell 1 may have an opening at its end in the first direction, which can be understood as a cylindrical structure with an open tail end. It should be noted that in this application embodiment, the first direction can be understood as the direction of extension of the axis of the shell 1; specifically, the axial direction of the shell 1 can be as follows... Figure 2 The direction indicated by X in the figure, the radial direction of housing 1 can be as follows: Figure 2 The direction indicated by Y in .

[0057] The strain detection component 2 can be installed on the axial end of the housing 1 through plug-in, snap-fit, or sleeve connection. In this embodiment, the strain detection component 2 is mainly used to erase the writing trajectory information formed by the electronic pen. During use, the strain detection component 2 transmits the writing trajectory information that needs to be clear to the electronic pen. In normal use, the eraser used to erase writing information, such as the text information written in pencil, is usually done with an eraser. Since the eraser is an elastic element, it can deform locally during erasure, providing a certain erasing feel. Based on this, in this embodiment, in order to make the strain detection component 2 included in the electronic pen also have an erasing feel similar to that of an eraser, this embodiment mainly achieves this through the structure of the strain detection component 3. The strain detection component 3 includes a strain detection element 31, a deformation element 32, and a fixing bracket 33. The deformation of the deformation element 32 mainly provides feedback on the deformation of the eraser component 2 in the radial direction of the housing.

[0058] It should be noted that the strain detection element 31 in this embodiment can be a flexible circuit board or a resistive strain gauge, meaning the strain detection element 31 can detect the deformation of the deformation component 32. The deformation component 32 is the main component for transmitting erasure information from the erasure assembly 2, meaning it is the main component for sensing the movement trajectory of the erasure assembly 2. The deformation component 32 can be a deformable signal transmission component such as a metal foil, semiconductor material, or polymer composite material; this embodiment does not limit its use. The fixing bracket 33 is mainly used to connect the erasure assembly 2 and the deformation component 32, and can also be used to install and fix the strain detection element 31. The fixing bracket 33 can be a frame structure or a cylindrical structure, and its interior can have a deformation cavity to provide travel space for the subsequent deformation of the deformation component 32. It should also be noted that the deformation component 32 can be a frame structure, a rectangular plate structure, or other plate structures with contact surfaces; this embodiment does not limit its use. The deformation component 32 has at least one surface that provides sufficient area for the attachment of the strain detection element 31.

[0059] In some embodiments, such as Figure 4 and Figure 5 As shown, the electronic pen includes a main circuit board 6 located inside the housing 1, one side of the deformable element 32 is connected to the fixed bracket 33, and the other side is connected to the housing 1, and the strain detection element 31 is connected to the main circuit board 6.

[0060] In this embodiment, the strain detection element 31 can extend along the axial direction of the housing 1. A portion of the strain detection element 31 can be connected to the main circuit board 6 fixed inside the housing 1. The portion of the strain detection element 31 extending out of the housing 1 can be installed in the fixing bracket 33 and used in conjunction with the deformable component 32. In this way, the deformation information of the deformable component detected by the strain detection element 31 can be transmitted through the main circuit board 6. In addition, one side of the deformable component 32 is connected to the fixing bracket 33, and the other side is connected to the housing 1. Therefore, the deformable component 32 can be limited by the fixing bracket 33 and the housing 1, so that the deformable component 32 can deform along the radial direction of the housing 1 with the erasing assembly 2.

[0061] Regarding the structure of the deformable element 32, in one possible implementation, such as Figure 3 and Figure 6 As shown, the deformable member 32 includes two first strain plates 321 extending axially along the housing 1, and the two first strain plates 321 are arranged radially spaced along the housing 1. Each first strain plate 321 is at least partially attached with a strain detection element 31.

[0062] In this embodiment, to enable the deformation member 32 to deform along the radial direction of the housing 1, the deformation member 32 can be a frame-shaped structure. The deformation member 32 has two first strain plates 321 spaced apart along the radial direction of the housing 1, such that the surfaces of the two first strain plates 321 intersect the radial direction of the housing 1. To adapt to the above structure of the deformation member 32, the strain detection element 31 can include two sensing parts 311 spaced apart along the radial direction of the housing 1. One sensing part 311 contacts one first strain plate 321. Both the sensing part 311 and the first strain plate 321 can be plate-shaped structures, or they can be rod-shaped structures. This embodiment does not limit the specific type of structure. Thus, after the strain detection element 31 and the first strain plate 321 are installed, the sensing part 311 and the first strain plate 321 are in contact, and the two first strain plates 321 are at least partially attached to the strain detection element 31. In this way, when the erasing component 2 deforms relative to the housing 1 in the radial direction of the housing 1, it can drive the fixed bracket 33 to move in the radial direction of the housing 1, causing the two first strain plates 321 to deform in the radial direction of the deformed housing 1. When the first strain plates 321 located on different sides in the axial direction of the housing 1 deform, the sensing part 311 in contact with them can provide real-time feedback on the deformation of the erasing component 2 on that side. This allows the strain detection element 31 to provide feedback on the deformation information of the erasing component 2 on different sides in the radial direction of the housing 1. At the same time, the deformation of the two first strain plates 321 increases the overall deformation stroke of the electronic pen.

[0063] In some embodiments, such as Figure 3 , Figure 6 , Figure 7 and Figure 8 As shown, the strain detection assembly 2 includes a detachably connected mounting bracket 21 and an erasing head 22, with the erasing head 22 located on the outer wall of the mounting bracket 21. A fixing bracket 33 is installed inside the mounting bracket 21. A first inner liner bracket 11 and a fixing seat 12 are provided on the inner wall of the end of the housing 1. The end of the mounting bracket 21 is inserted into the first inner liner bracket 11, and the fixing seat 12 is embedded in the inner cavity of the mounting bracket 21. The end of the fixing bracket 33 away from the housing 1 includes a limiting plate 331. Deformation plate 3 2 also includes two first pressing plates 323 and second pressing plates 324, and each first pressing plate 323 and second pressing plate 324 extends radially along the housing 1. The two ends of the second pressing plate 324 are respectively connected to a first strain plate 321, and the end of each first strain plate 321 away from the second pressing plate 324 is respectively connected to a first pressing plate 323. The first pressing plate 323 abuts against the end face of the fixed seat 12 facing the fixed bracket 33, and the second pressing plate 324 abuts against the limiting plate 331.

[0064] In this embodiment, the mounting bracket 21 is a frame structure. At least a portion of the mounting bracket 21 is used to mount the erasing head 22, and the other portion is used to connect with the housing 1. The erasing head 22 can be an elastic block structure, so that the erasing head 22 can have an elastic reset function, thereby allowing the erasing head 22 to return to its initial shape after being deformed during erasing. The erasing head 22 can be an integral elastic structure or a split elastic structure; this embodiment does not limit this. For example, when the erasing head 22 is a split elastic structure, the erasing head 22 may include a first elastic block and a second elastic block. The first elastic block and the second elastic block are symmetrically arranged along the axis of the electronic pen in the axial direction of the housing 1. The first elastic block is engaged with the first outer surface of the mounting bracket 21, and the second elastic block is engaged with the second outer surface of the mounting bracket 21. The first outer surface and the second outer surface are two outer surfaces of the mounting bracket 21 that are symmetrically distributed along the axis of the electronic pen in the axial direction of the housing 1. The mounting bracket 21 can be inserted into the inner wall of the axial end of the housing 1, thereby causing the wiping head 22 to move the mounting bracket 21 relative to the housing 1 during the wiping motion. Furthermore, the mounting bracket 21 may include a mounting cavity, in which a fixing bracket 33 is installed. Both the mounting bracket 21 and the fixing bracket 33 are coaxially arranged along the first axis, allowing the fixing bracket 33 to move as a whole with the mounting bracket 21. This also allows the fixing bracket 33 and the mounting bracket 21 to be installed along the axial direction of the housing 1, facilitating assembly between them.

[0065] In addition, such as Figure 8As shown, the mounting bracket 21 may further include a bracket body 211 and a second inner liner bracket 212 coaxially arranged along the axial direction of the housing 1. The erasing head 22 is detachably connected to the outer wall of the bracket body 211, and the second inner liner bracket 212 is fixed to the inner wall of the bracket body 211 near the end of the strain detection element 31, forming an inner mounting cavity. It should be noted that the mounting bracket 21 is a split structure, including the bracket body 211 and the second inner liner bracket 212. The bracket body 211 is mainly used to fix the erasing head 22. The second inner liner bracket 212 is used to form an inner mounting cavity to mount and fix the bracket 33. The first axis of the support body 211 and the second inner liner support 212 are coaxially arranged. It can be understood that the end of the support body 211 near the shell 1 is a cylindrical structure and the second inner liner support 212 is a cylindrical structure. The second inner liner support 212 can be sleeved in the cylindrical structure of the end of the support body 211 near the shell 1. The second inner liner support 212 and the support body 211 can be detachably connected by setting buckles, plug-in structures, etc., which facilitates the assembly of the support 21. Based on the above structure, since the erasing head 22 is detachably connected to the outer wall of the support body 211, and the second inner liner support 212 is fixed to the inner wall of the end of the support body 211 near the strain detection element 31, the second inner liner support 212 forms an installation cavity. Therefore, the support body 211 and the fixed support 33 can be connected through the second inner liner support 212. In addition, since the erasing head 22 is connected to the outer wall of the support body 211, the fixed support 33 and the erasing head 22 can be indirectly fixed through the second inner liner support 212, so that the strain detection component 2 and the strain detection component 3 can move as a whole, and at the same time, it is convenient to assemble the strain detection component 2 and the strain detection component 3.

[0066] In some embodiments, for the assembly between the erasing head 22 and the housing 1, the erasing head 22 has an insertion protrusion 221 on the end of the housing 1 in the axial direction near the end of the housing 1. A shoulder structure 222 is formed between the insertion protrusion 221 and the end face of the erasing head 22 on the end of the housing 1 in the axial direction near the end of the housing 1. The support body 211 has a first slot 2111, and the insertion protrusion 221 is inserted into the first slot 2111. A gap exists between the shoulder structure 222 and the end face of the housing 1 facing the strain detection component 2 in the axial direction. The gap between the shoulder structure 222 and the end face of the housing 1 facing the strain detection component 2 in the axial direction is as follows: Figure 3 As shown in n.

[0067] In this embodiment, since the erasing head 22 is provided with a plugging protrusion 221 on the end of the housing 1 in the axial direction near the housing 1, and the bracket body 211 is provided with a first slot 2111, the plugging protrusion 221 is inserted into the first slot 2111. Therefore, the detachable connection between the bracket body 211 and the erasing head 22 can be achieved by the plugging protrusion 221 and the first slot 2111, which facilitates the connection between the erasing head 22 and the bracket body 211, so that the erasing head 22 and the bracket body 211 can move as a whole. Furthermore, since a shoulder structure 222 is formed between the insertion protrusion 221 and the erasing head 22 on the end face of the housing 1 near the end of the housing 1 in the axial direction, and there is a gap between the shoulder structure 222 and the end face of the housing 1 facing the strain detection component 2 in the axial direction, and since one end of the mounting bracket 21 in the axial direction is inserted into the inner wall of the end of the housing 1 in the axial direction, the gap between the shoulder structure 222 and the end face of the housing 1 facing the strain detection component 2 in the axial direction provides an installation allowance for the installation between the mounting bracket 21 and the housing 1.

[0068] In some embodiments, the inner wall of the end of the housing 1 in the axial direction is provided with a first inner liner bracket 11 and a fixing seat 12. The mounting bracket 21 is inserted into the first inner liner bracket 11 at one end of the housing 1 in the axial direction, and there is a clearance fit between the outer wall of the mounting bracket 21 and the inner wall of the first inner liner bracket 11. The fixing seat 12 is installed in the inner cavity of the end of the first inner liner bracket 11 away from the mounting bracket 21.

[0069] In this embodiment, the first inner liner bracket 11 provides installation space for the mounting bracket 21. During installation, the first inner liner bracket 11 can be first installed on the inner wall of the axial end of the housing 1, and then the axial end of the mounting bracket 21 can be inserted into the first inner liner bracket 11, so that the outer wall of the mounting bracket 21 and the inner wall of the first inner liner bracket 11 are in clearance fit. In this way, due to the clearance fit between the outer wall of the mounting bracket 21 and the inner wall of the first inner liner bracket 11, the mounting bracket 21 has a movement margin between itself and the inner wall of the first inner liner bracket 11 in the radial direction of the housing 1. This gap between the outer wall of the mounting bracket 21 and the inner wall of the first inner liner bracket 11 provides travel space for the erasing component 2 in the radial direction of the housing 1, further ensuring an increase in the deformation travel of the erasing component 2.

[0070] It should be noted that the fixing seat 12 can be a block structure, a cover structure, or other structures. The fixing seat 12 can be installed in the inner cavity of the first inner liner bracket 11 at the end away from the mounting bracket 21 by nesting. The deformation plate 32 also includes two first pressure plates 323 and second pressure plates 324, and each of the first pressure plates 323 and second pressure plates 324 extends radially along the shell 1. The two ends of the second pressure plate 324 are respectively connected to a first strain plate 321, and the end of each first strain plate 321 away from the second pressure plate 324 is respectively connected to a first pressure plate 323. In this way, each first pressing plate 323 abuts against the end face of the fixed seat 12 facing the fixed bracket 33, and each second pressing plate 324 abuts against the limiting plate 331. Therefore, the fixed bracket 33 and the limiting plate 331 constitute the travel space for the first strain plate 321 to move in the axial direction of the housing 1. Under the action of the limiting plate 331 and the fixed seat 12, the size of the first strain plate 321 in the axial direction of the housing 1 can be fixed. If the wiping component 2 drives the strain detection component 3 to continue to move in the axial direction of the housing 1, it will squeeze the first strain plate 321, causing the first strain plate 321 to deform in the radial direction of the housing 1.

[0071] Regarding the structure of the deformable element 32, in another possible implementation, such as Figure 12 and Figure 16 As shown, the deformable member 32 includes a second strain plate 322, which extends along the axial direction of the housing 1, and at least one surface of the second strain plate 322 is attached with a strain detection element 31.

[0072] In this embodiment, since the second strain plate 322 extends axially along the housing 1, at least one surface of the second strain plate 322 is attached with a strain detection element 31. Therefore, when the wiping assembly 2 deforms in the radial direction of the housing 1, it can drive the fixing bracket 33 to move in the radial direction of the housing 1 as well, causing the second strain plate 322 to deform in the radial direction of the deformed housing 1. When the second strain plate 322 deforms in different directions in the radial direction of the housing 1, the surfaces on which the second strain plate 322 and the strain detection element 31 are attached move away from and closer to the strain detection element 31. This allows the strain detection element 31 to provide feedback on the deformation information of the wiping assembly 2 on different sides in the radial direction of the housing 1. At the same time, the deformation of the second strain plate 322 increases the overall deformation stroke of the electronic pen.

[0073] In some embodiments, the strain detection assembly 2 includes a detachably connected mounting bracket 21 and an erasing head 22, with the erasing head 22 located on the outer wall of the mounting bracket 21. A fixing bracket 33 is detachably connected to the interior of the mounting bracket 21. The fixing bracket 33 includes a bracket body 332, a connecting seat 333, and an inner liner support 334. The bracket body 332 is detachably connected to the interior of the mounting bracket 21, and the inner liner support 334 is disposed on the inner wall of the end of the housing 1. The end of the mounting bracket 21 is inserted into the inner liner support 334. The connecting seat 333 is connected to the interior of the bracket body 332 and is axially opposite to the inner liner support 334 of the housing 1. One end of the second strain plate 322 in the axial direction of the housing 1 abuts against the inner liner support 334, and the other end of the second strain plate 322 in the axial direction of the housing 1 abuts against the connecting seat 333.

[0074] In this embodiment, the bracket body 332 can be a cylindrical structure or a frame structure. The bracket body 332 and the mounting bracket 21 can be detachably connected by means of snap-fit ​​or plug-in structures, thus facilitating assembly between them. For example, during installation, multiple snap-fit ​​protrusions and multiple snap-fit ​​grooves can be provided on the outer surface of the bracket body 332, allowing the snap-fit ​​protrusions to engage with the snap-fit ​​grooves, ensuring that both the bracket body 332 and the mounting bracket 21 are coaxially aligned along the axial direction of the housing 1. The connecting seat 333 can be a block structure, a cover structure, or other structures. The connecting seat 333 can be installed on the end of the bracket body 332 away from the housing 1 by snap-fit, nesting, or other means. The inner lining support 334 provides installation space for the mounting bracket 21. During installation, the inner lining support 334 can be first installed on the inner wall of the axial end of the housing 1, and then the axial end of the mounting bracket 21 can be inserted into the inner lining support 334. Afterwards, the axial end of the second strain plate 322 is placed against the inner lining support 334, and the axial end of the second strain plate 322 is placed against the connecting seat 333. Thus, under the support of the connecting seat 333 and the inner lining support 334, the relative position of the second strain plate 322 in the axial direction of the housing 1 is fixed, facilitating radial deformation of the second strain plate 322 along the housing 1 under external force.

[0075] In some embodiments, the eraser head 22 is made of an elastic material.

[0076] In this embodiment, the erasing head 22 can be any of the elastic materials such as rubber, polyurethane, or polytetrafluoroethylene, so that the erasing head 22 can return to its initial state after being deformed radially along the housing 1, so that the erasing assembly 2 can perform erasing actions multiple times.

[0077] In some embodiments, the strain detection assembly 2 further includes a coding electrode 4 and a signal transmitter 5. Both the coding electrode 4 and the signal transmitter 5 extend along the axial direction of the housing 1. The coding electrode 4 is installed inside the fixed bracket 33. The first end of the signal transmitter 5 is connected to the end of the coding electrode 4, and the second end of the signal transmitter 5 is connected to the main circuit board 6. The first end and the second end are the two opposite ends of the signal transmitter 5 in the axial direction of the housing 1.

[0078] In this embodiment, the signal transmission component 5 can be any of the deformable components that can transmit signals, such as a spring or a metal pin; this application does not limit this. Since the first end of the signal transmission component 5 is connected to the end of the coding electrode 4, and the second end of the signal transmission component 5 is connected to the main circuit board 6, the coding electrode 4 can be used to switch between various erasing functions of the erasing component 2. Specifically, when the strain detection component 2 generates an erasing motion, it drives the coding electrode 4 to move synchronously, causing the coding electrode 4 to deform the signal transmission component 5. This deformation is then transmitted to the main circuit board 6, enabling rapid switching of the erasing function of the strain detection component 2, thus enhancing the functionality and user experience of the electronic pen. Furthermore, since the signal transmission component 5 is elastic, meaning it has an elastic restoring force, when the erasing head 22 drives the signal transmission component 5 to move along the axial direction of the housing 1, the elastic restoring force of the signal transmission component 5 allows it to return to its initial position.

[0079] It should be noted that in the above embodiment, the strain detection component 3 further includes a mounting cylinder 34. The axis of the mounting cylinder 34 in the axial direction of the housing 1 coincides with the axis of the mounting bracket 21 in the axial direction of the housing 1, and the axis of the mounting cylinder 34 in the axial direction of the housing 1 coincides with the axis of the fixing bracket 33 in the axial direction of the housing 1. During installation, the end of the mounting cylinder 34 near the marking electrode 4 in the axial direction of the housing 1 can be connected to the inner wall of the mounting bracket 21. The fixing bracket 33 has a mounting through hole at the axis of the housing 1 in the axial direction, and the other part of the mounting cylinder 34 is embedded in the mounting through hole. In this way, the marking electrode 4 can be installed at the end of the mounting cylinder 34 near the marking electrode 4 in the axial direction of the housing 1, and then the signal transmission element 5 is embedded through the mounting cylinder 34 and electrically connected to the main circuit board 6. In this way, through the above installation method, the marking electrode 4, the signal transmission element 5, and the strain detection element 32 can form an integral structure.

[0080] In some embodiments, such as Figure 3 As shown, the deformable member 32 includes two first strain plates 321 extending axially along the housing 1, and the two first strain plates 321 are arranged radially spaced along the housing 1; the signal transmission member 5 extends axially along the housing 1, and the signal transmission member 5 is disposed between the two first strain plates 321.

[0081] In this embodiment, since the signal transmission element 5 extends along the axial direction of the housing 1 and is disposed between the two first strain plates 321, the signal transmission element 5 can be arranged in the space between the two first strain plates 321, thereby saving the installation space inside the fixed bracket 33, which is beneficial to meeting the small size setting requirements of the electronic pen.

[0082] In some embodiments, the fixed bracket 33 includes a cavity, and the strain detection element 31 includes a sensing part 311 located in the cavity. The deformable member 32 is at least partially in contact with the sensing part 311. A gap exists between the sensing part 311 and the inner wall of the cavity in the radial direction of the housing 1. In this way, the gap between the sensing part 311 and the inner wall of the cavity in the radial direction of the housing 1 provides sufficient space for the deformation of the deformable member 32 in the radial direction of the housing 1, avoiding interference between the deformable member 32 and the fixed bracket 33 when the deformable member 32 deforms in the radial direction of the housing 1.

[0083] As can be seen from the above embodiments, in this application embodiment, since the erasing assembly 2 can deform relative to the housing 1 in the radial direction of the housing 1, the erasing assembly 2 can have a deformation stroke in the radial direction of the housing 1. Furthermore, since the strain detection assembly 3 includes a strain detection element 31, a deformable element 32, and a fixing bracket 33, and the fixing bracket 33 is connected to the erasing assembly 2 and is used to mount the deformable element 32, and at least a portion of the strain detection element 31 is attached to the deformable element 32, when the erasing assembly 2 deforms relative to the housing 1 in the radial direction of the housing 1, it can cause the fixing bracket 33 to also deform in the radial direction of the housing 1, thereby causing the deformable element 32 to also deform in the radial direction of the deformable housing 1. On the one hand, the electronic pen provided in this application increases the deformation stroke of the electronic pen by deforming the erasing component 2 in the radial direction of the housing, thereby simulating the feel of using a real eraser; on the other hand, when the erasing component 2 deforms relative to the housing 1 in the radial direction of the housing 1, the deformation of the deformation component 32 can be detected by the strain detection element 31, thereby activating the erasing function of the erasing component 2. Overall, the user experience of the electronic pen is improved.

[0084] The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0085] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0086] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0087] The present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An electronic pen, characterized by The electronic pen comprises: a shell; an erasing assembly located at one end of the shell and connected with the shell, the erasing assembly being capable of deforming in a radial direction of the shell relative to the shell; a strain detection assembly comprising a strain detection element, a deformation piece and a fixing support, the fixing support being connected with the erasing assembly, the fixing support being used for mounting the deformation piece, at least part of the strain detection element being attached to the deformation piece; wherein when the erasing assembly deforms in the radial direction of the shell relative to the shell, the strain detection element is used for detecting the deformation of the deformation piece.

2. The electronic pen according to claim 1, characterized by The electronic pen comprises a main circuit board located in the shell, one side of the deformation piece being connected with the fixing support and the other side being connected with the shell, the strain detection element being connected with the main circuit board.

3. The electronic pen according to claim 1, wherein The deformation piece comprises two first strain plates extending in an axial direction of the shell, and the two first strain plates are arranged in a radial direction of the shell; at least part of each first strain plate is attached with the strain detection element.

4. The electronic pen according to claim 3, wherein The strain detection assembly comprises a mounting support and an erasing head which are detachably connected, and the erasing head is located on an outer wall of the mounting support, and the fixing support is mounted in an inner part of the mounting support; an inner wall of an end part of the shell is provided with a first inner lining support and a fixing seat; an end part of the mounting support is inserted into the first inner lining support, the fixing seat is embedded in an inner cavity of the mounting support, and an end part of the fixing support away from the shell comprises a limiting plate; the deformation piece further comprises two first pressing plates and a second pressing plate, each of the first pressing plates and the second pressing plate extends in the radial direction of the shell, two ends of the second pressing plate are respectively connected with a first strain plate, one end of each first strain plate away from the second pressing plate is respectively connected with a first pressing plate, the first pressing plate abuts on an end face of the fixing seat towards the fixing support, and the second pressing plate abuts on the limiting plate.

5. The electronic pen according to claim 1, wherein The deformation piece comprises a second strain plate; the second strain plate extends in the axial direction of the shell, and at least one surface of the second strain plate is attached with the strain detection element.

6. The electronic pen according to claim 5, wherein The strain detection assembly comprises a mounting support and an erasing head which are detachably connected, and the erasing head is located on an outer wall of the mounting support, and the fixing support is detachably connected in an inner part of the mounting support; the fixing support comprises a support main body, a connecting seat and an inner lining support, the support main body is detachably connected in the inner part of the mounting support, the inner lining support is arranged on an inner wall of an end part of the shell, an end part of the mounting support is inserted into the inner lining support, the connecting seat is connected in an inner part of the support main body and is arranged opposite to the inner lining support in the axial direction of the shell; one end of the second strain plate in the axial direction of the shell abuts on the inner lining support, and the other end of the second strain plate in the axial direction of the shell abuts on the connecting seat.

7. An electronic pen according to any one of claims 4 or 6, characterized in that, The erasing head is made of elastic material.

8. The electronic pen according to claim 2, wherein The electronic pen further comprises a code striking electrode and a signal transmission piece. The code striking electrode and the signal transmission member both extend along the axial direction of the shell, the code striking electrode is mounted inside the fixed support, a first end of the signal transmission member is connected with an end of the code striking electrode, a second end of the signal transmission member is connected with the main circuit board, and the first end and the second end are opposite ends of the signal transmission member in the axial direction of the shell.

9. The electronic pen according to claim 8, characterized in that, The deformation member includes two first strain plates extending along the axial direction of the shell, and the two first strain plates are arranged in the radial direction of the shell. The signal transmission member extends along the axial direction of the shell, and the signal transmission member is arranged between the two first strain plates.

10. The electronic pen according to claim 1, characterized by The fixed support includes a cavity, the strain detection element includes a sensing end, the sensing end is located in the cavity, and the deformation member at least partially contacts the sensing end. There is a gap between the sensing end and the inner wall of the cavity in the radial direction of the shell.

Images