Pen point pressure sensing structure and electronic pen
By designing multiple pressure sensors in the pen tip pressure-sensitive structure to detect the deformation of the pen tip assembly acting on the substrate, the problem of low pressure measurement accuracy during tilting writing in the prior art is solved, and higher pressure measurement accuracy and pen tip stability are achieved.
Patent Information
- Application Number
- CN202421146709.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-24
AI Technical Summary
In the tilt pressure-sensitive structure of the existing pen tip, the angle of the force direction is affected by the force direction in an inclined writing or painting scenario, resulting in low accuracy of pressure measurement.
A pen tip pressure sensing structure including a pen tip assembly, a pen sleeve and a pressure detection device is designed. The pressure detection device consists of a substrate and a plurality of first pressure sensors. The substrate is connected to the pen tip assembly and is connected to the inner wall of the pen sleeve. The sensor is arranged around the pen tip assembly to detect the deformation of the pen tip assembly acting on the substrate.
Through the comprehensive measurement of multiple pressure sensors, the pressure measurement accuracy of the pressure detection device can be effectively improved, and the stability and writing experience of the pen tip can be improved.
Smart Images
Figure CN222600189U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of electronic pens, and specifically relates to a pen tip pressure sensing structure and an electronic pen. Background Art
[0002] At present, most of the pen tip pressure-sensing structures on the market use pressure sensors to sense the force on the pen tip to identify whether the writing mode is turned on. Since pressure sensors can usually only measure force in a single direction, in the case of inclined writing and drawing, that is, when there is a certain angle in the force direction, it will affect the accuracy of the force measurement. Utility Model Content
[0003] Purpose of the utility model: The embodiments of the present application provide a pen tip pressure sensing structure and an electronic pen, aiming to solve the technical problem of low accuracy of pen tip pressure sensing detection.
[0004] Technical solution: A pen tip pressure sensing structure according to an embodiment of the present application includes:
[0005] A pen tip assembly is extended along a first direction;
[0006] The pen cover has a receiving space, and at least a part of the pen tip assembly is located in the receiving space;
[0007] A pressure detection device is located in the accommodating space, and the pressure detection device includes a substrate and a plurality of first pressure sensors. The substrate is connected to the pen tip assembly and to the inner wall of the pen cover. The plurality of first pressure sensors are arranged on the side of the substrate facing the pen tip and are arranged around the pen tip assembly. The first pressure sensors are used to detect the deformation amount of the pen tip assembly acting on the substrate.
[0008] In some embodiments, at least one of the plurality of first pressure sensors is disposed on the substrate along a second direction, and the second direction intersects with the first direction.
[0009] In some embodiments, at least one of the plurality of first pressure sensors is disposed on the substrate along a third direction, and the third direction intersects the first direction.
[0010] In some embodiments, the pressure detection device includes a second pressure sensor connected to a side of the substrate facing away from the pen tip assembly.
[0011] In some embodiments, the pressure detection device includes a third pressure sensor, which is disposed between the pen tip assembly and the substrate and is connected to the pen tip assembly and the substrate respectively.
[0012] In some embodiments, the nib assembly includes a nib body and a nib holder, the nib holder having a first surface and a second surface arranged opposite to each other along the first direction, the first surface being connected to the substrate, the nib holder having a limiting groove, the opening of the limiting groove passing through the second surface, and the nib body being embedded in the limiting groove.
[0013] In some embodiments, the first surface is provided with a protrusion, and the protrusion is connected to the substrate.
[0014] In some embodiments, the protrusion is a curved surface.
[0015] In some embodiments, the pressure detection device includes a PCB board, and the PCB board is electrically connected to the first pressure sensor.
[0016] Correspondingly, an electronic pen according to an embodiment of the present application includes the above-mentioned pen tip pressure sensing structure.
[0017] Beneficial effects: The present application provides a pen tip pressure sensing structure, including a pen tip assembly, a pen cover and a pressure detection device, wherein the pen tip assembly is extended along a first direction. The pen cover has a storage space, and at least part of the pen tip assembly is located in the storage space. The pressure detection device is located in the storage space, and the pressure detection device includes a substrate and a plurality of first pressure sensors, the substrate is connected to the pen tip assembly and to the inner wall of the pen cover, the plurality of first pressure sensors are arranged on the side of the substrate facing the pen tip, and are arranged around the pen tip assembly, and the first pressure sensor is used to detect the deformation amount of the pen tip assembly acting on the substrate. The substrate is connected to the inner wall of the pen cover, which can ensure that the force acting on the substrate by the pen tip assembly is received, and the substrate is deformed under the force of the pen tip assembly. The plurality of first pressure sensors are used to measure the deformation amount of the substrate, so that the force change of the pen tip assembly can be obtained. Such a configuration can effectively improve the pressure measurement accuracy of the pressure detection device, thereby improving the pressure performance effect and pen tip stability, and improving the user's writing experience.
[0018] The electronic pen of the embodiment of the present application includes the above-mentioned pen tip pressure sensing structure, so the electronic pen can have all the technical features and beneficial effects of the above-mentioned pen tip pressure sensing structure, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 is a schematic structural diagram of an electronic pen according to an embodiment of the present application;
[0021] Figure 2 is an exploded view of the first electronic pen according to an embodiment of the present application;
[0022] Figure 3 is an exploded diagram of a second electronic pen according to an embodiment of the present application;
[0023] Figure 4 is a structural schematic diagram of a first pressure detection device according to an embodiment of the present application;
[0024] Figure 5 is a structural schematic diagram of a second pressure detection device according to an embodiment of the present application;
[0025] Figure 6 is an exploded view of a third electronic pen according to an embodiment of the present application;
[0026] Figure 7 It is an exploded diagram of the fourth electronic pen according to the embodiment of the present application.
[0027] Figure numerals: 1, pen tip assembly; 2, pen cover; 3, pressure detection device; 10, pen tip body; 11, pen tip bracket; 20, accommodating space; 21, inner wall; 30, substrate; 31, first pressure sensor; 32, second pressure sensor; 33, third pressure sensor; 110, first surface; 111, second surface; 112, limiting groove; 1100, protrusion; 1120, opening; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.
[0029] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined. In the description of this application, "vertical" means completely vertical at 90° or almost completely vertical, for example, an angle within the range of 80° to 100° is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel, for example, an angle within 10° of completely parallel is considered parallel.
[0030] At present, most of the pen tip pressure-sensing structures on the market use pressure sensors to sense the force on the pen tip to identify whether the writing mode is turned on. Since pressure sensors can usually only measure force in a single direction, in the case of inclined writing and drawing, that is, when there is a certain angle in the force direction, it will affect the accuracy of the force measurement.
[0031] In view of this, the present application provides a pen tip pressure sensing structure, including a pen tip assembly, a pen cover and a pressure detection device, wherein the pen tip assembly is extended along a first direction. The pen cover has a storage space, and at least part of the pen tip assembly is located in the storage space. The pressure detection device is located in the storage space, and the pressure detection device includes a substrate and a plurality of first pressure sensors, the substrate is connected to the pen tip assembly and to the inner wall of the pen cover, the plurality of first pressure sensors are arranged on the side of the substrate facing the pen tip, and are arranged around the pen tip assembly, and the first pressure sensor is used to detect the deformation amount of the pen tip assembly acting on the substrate. The substrate is connected to the inner wall of the pen cover, which can ensure that the force acting on the substrate by the pen tip assembly is received, and the substrate is deformed under the force of the pen tip assembly. The plurality of first pressure sensors are used to measure the deformation amount of the substrate, so that the force change of the pen tip assembly can be obtained. Such a configuration can effectively improve the pressure measurement accuracy of the pressure detection device, thereby improving the pressure performance effect and pen tip stability, and improving the user's writing experience.
[0032] The pen tip pressure sensing structure and the electronic pen of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.
[0033] Figure 1 is a schematic structural diagram of an electronic pen according to an embodiment of the present application; Figure 2 is an exploded diagram of an electronic pen according to an embodiment of the present application; Figure 3 is an exploded view of an electronic pen according to another embodiment of the present application; Figure 4 is a structural schematic diagram of a pressure detection device according to an embodiment of the present application; Figure 5 is an exploded view of an electronic pen according to another embodiment of the present application; Figure 6 This is an exploded view of an electronic pen according to yet another embodiment of the present application.
[0034] The present application provides a pen tip pressure sensing structure, comprising a pen tip assembly 1, a pen cover 2 and a pressure detection device 3, wherein the pen tip assembly 1 is extended along a first direction X. The pen cover 2 has a receiving space 20, and at least part of the pen tip assembly 1 is located in the receiving space 20. The pressure detection device 3 is located in the receiving space 20, and the pressure detection device 3 comprises a substrate 30 and a plurality of first pressure sensors 31, wherein the substrate 30 is connected to the pen tip assembly 1 and to the inner wall 21 of the pen cover 2, wherein the plurality of first pressure sensors 31 are arranged on the side of the substrate 30 facing the pen tip and are arranged around the pen tip assembly 1, and the first pressure sensors 31 are used to detect the deformation amount of the pen tip assembly 1 acting on the substrate 30. The substrate 30 is connected to the inner wall 21 of the pen cover 2, so as to ensure that the force acting on the substrate 30 by the pen tip assembly 1 is received, and the substrate 30 is deformed under the force of the pen tip assembly 1, and the plurality of first pressure sensors 31 are used to measure the deformation amount of the substrate 30, so as to obtain the force change of the pen tip assembly 1. Such a configuration can effectively improve the pressure measurement accuracy of the pressure detection device 3, thereby improving the pressure expression effect and pen tip stability, and improving the user's writing experience.
[0035] In some embodiments, at least one of the plurality of first pressure sensors 31 is disposed on the substrate 30 along the second direction Y, and the second direction Y intersects with the first direction X. At least one of the plurality of first pressure sensors 31 is disposed on the substrate 30 along the third direction Z, and the third direction Z intersects with the first direction X. In the embodiment of the present application, the first direction X is the extension direction of the pen tip assembly 1, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other. By disposing at least one first pressure sensor 31 in the second direction Y of the substrate 30 and at least one first pressure sensor 31 in the third direction Z, the deformation amount of the substrate 30 under the force of the pen tip assembly 1 can be detected. Based on the measurement data of at least one first pressure sensor 31 in the second direction Y of the substrate 30 and at least one first pressure sensor 31 in the third direction Z, the force change of the pen tip assembly 1 in the second direction Y and the third direction Z can be calculated. At the same time, by integrating the measurement data of the plurality of first pressure sensors 31, the force change of the pen tip assembly 1 in the first direction X can be inferred, thereby effectively improving the pressure measurement accuracy of the pressure detection device 3, thereby improving the pressure performance effect and the pen tip stability, and improving the user's writing experience.
[0036] exist Figure 4 In the illustrated embodiment, two first pressure sensors 31 are provided on the substrate 30 in the second direction Y, and two first pressure sensors 31 are provided on the substrate 30 in the third direction Z. By providing a plurality of first pressure sensors 31 at different positions of the substrate 30, the accuracy of the measurement can be improved, thereby obtaining a more accurate result of the force change. By providing sensors in the second direction Y and the third direction Z, respectively, the direction of the force can be determined.
[0037] exist Figure 5 In the embodiment shown, a first pressure sensor 31 is arranged on the substrate 30 along the second direction Y, and a first pressure sensor 31 is arranged on the substrate 30 along the third direction Z. This can effectively improve the pressure measurement accuracy of the pressure detection device 3 while simplifying the structure, improving the production and assembly efficiency, and reducing the cost.
[0038] exist Figures 1 to 3In the illustrated embodiment, the nib assembly 1 includes a nib body 10 and a nib holder 11, and the nib holder 11 is used to connect the nib body 10 and the substrate 30. The nib holder 11 has a first surface 110 and a second surface 111 arranged opposite to each other along a first direction X, the first surface 110 is connected to the substrate 30, the nib holder 11 has a limiting groove 112, the opening 1120 of the limiting groove 112 passes through the second surface 111, and the nib body 10 is embedded in the limiting groove 112. The limiting groove 112 on the nib holder 11 and the embedding of the nib body 10 can ensure that the nib body 10 is in the correct position and remains relatively fixed, so that the nib body 10 maintains a relatively stable position during the writing process, reducing shaking and deviation. The external force applied to the nib body 10 during the writing process is transmitted to the substrate 30 through the nib holder 11, so that the substrate 30 is deformed under the force of the nib body 10. The deformation of the substrate 30 is measured by a plurality of first pressure sensors 31, so as to obtain the force change of the pen tip body 10. Such a configuration can effectively improve the pressure measurement accuracy of the pressure detection device 3, thereby improving the pressure performance and pen tip stability, and improving the user's writing experience.
[0039] exist Figure 6 In the illustrated embodiment, the pressure detection device 3 includes a second pressure sensor 32, and the second pressure sensor 32 is connected to the side of the substrate 30 away from the pen tip assembly 1. Placing the second pressure sensor 32 on the side of the substrate 30 away from the pen tip assembly 1 can prevent the second pressure sensor 32 from being directly in contact with the pen tip assembly 1 and being damaged by external force. By avoiding direct contact, the potential risk of damage can be reduced and the life and reliability of the second pressure sensor 32 can be extended.
[0040] In other embodiments, the pressure detection device 3 includes a third pressure sensor 33, which is disposed between the pen tip assembly 1 and the substrate 30 and is connected to the pen tip assembly 1 and the substrate 30, respectively. Figure 6 As shown. With such a configuration, the pressure change applied by the pen tip body 10 to the substrate 30 along the first direction X can be accurately detected. By providing the pen tip bracket 11 as a buffer layer between the third pressure sensor 33 and the pen tip body 10, the measurement accuracy of the third pressure sensor 33 can be improved while reducing the influence of external interference on the measurement result.
[0041] In some embodiments, the first surface 110 is provided with a protrusion 1100, and the protrusion 1100 is connected to the substrate 30. Specifically, the protrusion 1100 is a curved surface. The curved surface can be a spherical surface, and the center of the spherical surface is located at the center of the substrate 30, which reduces the pressure loss generated by the pen tip body 10 in the process of transmitting the writing pressure to the substrate 30, improves the accuracy of the pressure detection device 3 for the pen tip assembly 1, and thus can improve the writing quality and user experience.
[0042] In some embodiments, the pressure detection device 3 includes a PCB board, and the PCB board is electrically connected to the first pressure sensor 31. The measurement data obtained by the multiple first pressure sensors 31 are transmitted to the PCB board, and the PCB board receives the measurement data and calculates the force and change of the pen tip assembly 1 in the first direction X, the second direction Y and the third direction Z through an algorithm, and then can control the operation of the electronic pen according to the accurate pressure detection value obtained, thereby improving the pressure detection accuracy, detection efficiency and pen tip stability, and improving the user's writing experience. It is known to those skilled in the art to control the operation of the electronic pen according to the pressure detection value, and it will not be repeated here.
[0043] The embodiment of the present application provides an electronic pen, including the above-mentioned pen tip pressure sensing structure. Therefore, the electronic pen can have all the technical features and beneficial effects of the above-mentioned pen tip pressure sensing structure, which will not be described in detail here.
[0044] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0045] The above is a detailed introduction to a pen tip pressure sensing structure and an electronic pen provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.
Claims
1. A pen tip pressure sensing structure, characterized in that: include: A pen tip assembly is extended along a first direction; The pen cover has a receiving space, and at least a part of the pen tip assembly is located in the receiving space; A pressure detection device is located in the accommodating space, and the pressure detection device includes a substrate and a plurality of first pressure sensors. The substrate is connected to the pen tip assembly and to the inner wall of the pen cover. The plurality of first pressure sensors are arranged on the side of the substrate facing the pen tip and are arranged around the pen tip assembly. The first pressure sensors are used to detect the deformation amount of the pen tip assembly acting on the substrate.
2. The pen tip pressure sensing structure according to claim 1, characterized in that: At least one of the plurality of first pressure sensors is disposed on the substrate along a second direction, and the second direction intersects with the first direction.
3. The pen tip pressure sensing structure according to claim 1, characterized in that: At least one of the plurality of first pressure sensors is disposed on the substrate along a third direction, and the third direction intersects with the first direction.
4. The pen tip pressure sensing structure according to claim 1, characterized in that: The pressure detection device comprises a second pressure sensor, and the second pressure sensor is connected to a side of the substrate facing away from the pen tip assembly.
5. The pen tip pressure sensing structure according to claim 1, characterized in that: The pressure detection device includes a third pressure sensor, which is arranged between the pen tip assembly and the substrate and is connected to the pen tip assembly and the substrate respectively.
6. The pen tip pressure sensing structure according to claim 1, characterized in that: The nib assembly includes a nib body and a nib holder, the nib holder has a first surface and a second surface arranged opposite to each other along the first direction, the first surface is connected to the substrate, the nib holder has a limiting groove, the opening of the limiting groove passes through the second surface, and the nib body is embedded in the limiting groove.
7. The pen tip pressure sensing structure according to claim 6, characterized in that: The first surface is provided with a protrusion, and the protrusion is connected to the substrate.
8. The pen tip pressure sensing structure according to claim 7, characterized in that: The raised portion is a curved surface.
9. The pen tip pressure sensing structure according to claim 1, characterized in that: The pressure detection device includes a PCB board, and the PCB board is electrically connected to the first pressure sensor.
10. An electronic pen, characterized in that: It comprises the pen tip pressure sensing structure as described in any one of claims 1-9.