CN220357564U - Electronic pen pressure sensing module and electronic pen - Google Patents
Electronic pen pressure sensing module and electronic pen Download PDFInfo
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- CN220357564U CN220357564U CN202322222762.3U CN202322222762U CN220357564U CN 220357564 U CN220357564 U CN 220357564U CN 202322222762 U CN202322222762 U CN 202322222762U CN 220357564 U CN220357564 U CN 220357564U
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- pen
- assembly
- force arm
- pressure sensing
- elastic body
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- 230000035945 sensitivity Effects 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses an electronic pen pressure sensing module and an electronic pen, wherein the pressure sensing module comprises a pen tube assembly, a pen point assembly slidably arranged in the pen tube assembly and a pressure sensing assembly connected with the pen point assembly and used for collecting signals; the pressure sensing assembly comprises an elastic body, one end of the elastic body is connected with the tail part of the pen point assembly, and the other end of the elastic body is fixed in the pen tube assembly; a strain gauge is arranged on the elastic body, and a strain sensor connected with the strain gauge is arranged in the pen tube assembly; an auxiliary force arm used for limiting the sliding of the nib assembly is further arranged in the pen tube assembly, one end of the auxiliary force arm is connected with the nib assembly, and the other end of the auxiliary force arm is connected with the pen tube assembly. The utility model solves the problems of the existing electronic pen that the service life of the electronic pen is reduced and the sensitivity of the electronic pen is reduced due to overlarge stress.
Description
Technical Field
The utility model relates to the technical field of electronic touch pens, in particular to an electronic pen pressure sensing module and an electronic pen.
Background
The conventional electronic stylus generally comprises a pen holder, a pen point assembly, a battery, an antenna, a main control board and the like, wherein the pen point assembly comprises a pen point shaft, a strain sensor and an electrode assembly, the strain sensor and the electrode assembly are respectively arranged on the pen point shaft, the strain sensor comprises an elastic body and a strain gauge arranged on the elastic body, the strain gauge is arranged on the elastic body, the strain gauge deforms along with deformation of the elastic body to generate resistance change, and a signal is transmitted to the main control board to be converted into a writing signal of the electronic stylus, so that the writing of the electronic stylus is completed. In the prior art, the stress of the elastic body is uncontrolled, and when the force applied by a user is too large, the elastic body can be greatly deformed, so that the elastic body cannot rebound to an initial state, the service life of the elastic body is influenced, and the sensitivity of the electronic pen is reduced.
Disclosure of Invention
The utility model mainly aims to provide an electronic pen pressure sensing module and an electronic pen, and aims to solve the problems that the service life of an existing electronic pen elastomer is reduced due to overlarge stress and the sensitivity of the electronic pen is reduced.
In order to achieve the above purpose, the utility model provides an electronic pen pressure sensing module, which comprises a pen tube assembly, a pen point assembly slidably arranged in the pen tube assembly, and a pressure sensing assembly connected with the pen point assembly and used for collecting signals;
the pressure sensing assembly comprises an elastic body, one end of the elastic body is connected with the tail part of the pen point assembly, and the other end of the elastic body is fixed in the pen tube assembly; a strain gauge is arranged on the elastic body, and a strain sensor connected with the strain gauge is arranged in the pen tube assembly;
an auxiliary force arm used for limiting the sliding of the nib assembly is further arranged in the pen tube assembly, one end of the auxiliary force arm is connected with the nib assembly, and the other end of the auxiliary force arm is connected with the pen tube assembly.
Optionally, the elastic body is provided in a sheet structure, and the elastic body is provided in a vertical direction.
Optionally, the auxiliary force arm includes first force arm, second force arm and third force arm, first force arm and third force arm along the horizontal direction respectively with pen tube subassembly and nib subassembly are connected, the second force arm is an contained angle with the horizontal direction, just second force arm both ends are connected respectively first force arm and second force arm.
Optionally, two auxiliary force arms are provided, and the two auxiliary force arms are arranged in parallel.
Optionally, the elastic body, the auxiliary force arm and the pen tube assembly are integrally arranged.
Optionally, the nib assembly comprises a nib body, a base for mounting the nib body, the base end mounting a guide post for guiding the sliding movement of the nib assembly.
Optionally, the pen tube assembly comprises a pen tube main body, a pen cap is installed at the end part of the pen tube main body, a sliding space used for the guide post to slide is arranged inside the pen cap, and the sliding distance of the sliding space for the guide post to slide is set to be 0.2-0.4 mm.
Optionally, the strain sensor is connected with the strain gauge through an FPC flat cable.
Optionally, the FPC flat cable is further connected with a BTB connector.
In order to achieve the above purpose, the utility model also provides an electronic pen, which comprises any one of the electronic pen pressure sensing modules.
The utility model has the beneficial effects that: the structure of the pressure sensing module of the existing electronic pen is improved, an auxiliary force arm is added in the pen tube assembly to be connected with the pen point assembly, when the pen point assembly slides in the pen tube assembly, the pen point assembly is limited to slide through the auxiliary force arm, the pen point assembly can be prevented from being excessively displaced, the elastic body is effectively protected, the elastic body is prevented from being excessively deformed to affect the plastic rebound of the elastic body, the service life is reduced, and the sensitivity of the electronic pen is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the whole structure of a pressure sensing module of an electronic pen according to the present utility model;
FIG. 2 is an exploded view of the pressure sensor module of the electronic pen of the present utility model;
FIG. 3 is a cross-sectional view of the pressure sensing module of the electronic pen of the present utility model;
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
An embodiment of the utility model provides an electronic pen pressure sensing module, referring to fig. 1, which comprises a pen tube assembly 1, a pen point assembly 2 slidably installed in the pen tube assembly 1, and a pressure sensing assembly 3 connected with the pen point assembly 2 for collecting signals; when the pen point pen is used, a user holds the pen tube assembly 1 with hands, the pen point assembly 2 writes a picture, at the moment, the pen point assembly 2 is contracted towards the inside of the pen tube assembly 1 under the reverse acting force of the screen, so that pressure is applied to the pressure sensing assembly 3, the pressure sensing assembly 3 collects signals and sends the signals to a control panel of the electronic pen, and the electronic pen writes a picture, and the pen point is displayed on a display screen.
Referring to fig. 2 and 3, the pressure sensing component 3 includes an elastic body 31, one end of the elastic body 31 is connected with the tail of the pen tip component 2, and the other end of the elastic body 31 is fixed in the pen tube component 1; a strain gauge 32 is mounted on the elastic body 31, and a strain sensor 33 connected with the strain gauge 32 is mounted in the pen tube assembly 1;
an auxiliary force arm 11 for limiting the sliding of the pen point assembly 2 is further arranged in the pen tube assembly 1, one end of the auxiliary force arm 11 is connected with the pen point assembly 2, and the other end of the auxiliary force arm 11 is connected with the pen tube assembly 1.
In this embodiment, the structure of the auxiliary force arm 11 is added in the pen tube assembly 1, one end of the auxiliary force arm 11 is connected with the pen tube assembly 1, the other end is connected with the pen point assembly 2, when the pen point assembly 2 slides in the pen tube assembly 1, the pen point assembly 2 can receive the reverse tension of the auxiliary force arm 11, thereby avoiding the larger displacement of the pen point assembly 2, effectively limiting the sliding of the pen point assembly 2, so that the pen point assembly 2 presses the elastic body 31 with smaller displacement, ensuring the deformation of the elastic body 31 to enable the strain gauge 32 to collect signals, simultaneously effectively preventing the elastic body 31 from being deformed too much to affect the plastic rebound thereof, ensuring the service life of the elastic body 31, and further ensuring the high sensitivity of the electronic pen.
Further, the elastic body 31 is provided in a sheet-like structure, and the elastic body 31 is provided in a vertical direction. It should be noted that, in order to protect the elastic body 31, the displacement of the nib assembly 2 is smaller, so, in order to ensure that the elastic body 31 is deformed by the smaller displacement of the comparison assembly, in this embodiment, the elastic body 31 is configured as a sheet structure, the elastic body 31 is vertically installed in the sliding direction of the nib assembly 2, the top of the elastic body 31 is connected with the nib assembly 1, and the bottom of the elastic body 31 is connected with the nib assembly 2, so that once the nib assembly 2 is displaced, the elastic body 31 can be deformed, so that the strain gauge 32 can conveniently collect signals, and the sensitivity of the electronic pen is greatly improved.
Further, the auxiliary force arm 11 includes a first force arm 111, a second force arm 112, and a third force arm 113, where the first force arm 111 and the third force arm 113 are respectively connected with the pen tube assembly 1 and the pen tip assembly 2 along a horizontal direction, the second force arm 112 forms an included angle with the horizontal direction, and two ends of the second force arm 112 are respectively connected with the first force arm 111 and the second force arm 112.
In the sliding process of the nib assembly 2, as the first force arm 111 is connected with the pen tube assembly 1, the third force arm 113 is connected with the nib assembly 2, and the first force arm 111 and the third force arm 113 can be formed to pull the second force arm 112 from two ends of the second force arm 112, so that the auxiliary force arm 11 has a certain telescopic space, the nib assembly 2 can be ensured to slide, the problem that the nib assembly 2 is blocked and cannot slide, the elastic body 31 cannot deform, and the nib assembly 2 of the electronic pen cannot write.
Further, the auxiliary force arms 11 are arranged in two, and the two auxiliary force arms 11 are arranged in parallel, so that the force between the auxiliary force arms 11 and the nib assembly 2 is ensured to be uniform, the positioning and guiding effects on the sliding of the nib assembly 2 are achieved, and the sliding of the nib assembly 2 is more stable.
Further, the elastic body 31 and the auxiliary force arm 11 are integrally arranged with the pen tube assembly 1, so that the production process is simplified, the process of assembling the elastic body 31 and the auxiliary force arm 11 on the pen tube assembly 1 is omitted, the production efficiency is improved, and the production cost is reduced.
Further, referring to fig. 2 and 3, the nib assembly 2 includes a nib body 21, a base 22 for mounting the nib body 21, and a guide post 23 for guiding sliding movement of the nib assembly 2 is mounted at an end of the base 22. The pen tube assembly 1 comprises a pen tube main body 12, a pen cap 13 is arranged at the end part of the pen tube main body 12, a sliding space for sliding the guide post 23 is arranged in the pen cap 13, and the sliding space is used for the guide post 23 to slide by a distance A of 0.2-0.4 mm.
In the present embodiment, the nib assembly 2 is composed of a nib main body 21, a base 22 and a guide post 23, and the pen tube assembly 1 is composed of a pen tube main body 12 and a pen cap 13 at the end thereof; the base 22 is provided with the mounting groove for fixing the nib main body 21, when the nib assembly 2 is mounted, the nib assembly 2 is firstly mounted in the mounting groove of the base 22, so that the nib assembly 2 and the base 22 form a whole, and then the guide post 23 is mounted on the outer side of the base 22, so that the nib assembly 2 can conveniently provide guide when sliding, and the sliding stability of the nib assembly 2 is ensured;
after the nib assembly 2 is assembled, the nib assembly 2 is integrally inserted into the pen tube main body 12 of the pen tube assembly 1, and then the pen cap 13 passes through the front end of the nib assembly 2 and is connected with the pen tube main body 12, so that the nib assembly 2 and the pen tube assembly 1 are installed together; it should be noted that, after the nib assembly 2 and the pen tube set are installed, the guide post 23 is located inside the pen cap 13, the structure of the pen cap 13 is improved in this embodiment, the guide post 23 can slide inside the pen cap 13, the pen cap 13 provides a sliding space for the guide post 23, and meanwhile, a limiting surface is provided at one end of the pen cap 13 near the elastic body 31 for limiting the sliding distance of the guide post 23, thereby limiting the sliding distance of the nib assembly 2 and further protecting the elastic body 31. Preferably, in this embodiment, the sliding distance a is set to 0.2-0.4 mm, so that the elastic body 31 can be deformed for the strain gauge 32 to perform signal acquisition, and meanwhile, the elastic body 31 is effectively protected, and the service life of the elastic body 31 is prolonged.
Further, the guide post 23 is connected with the base 22 through a threaded structure, so that connection and disassembly between the guide post 23 and the base 22 are facilitated, assembly of the nib assembly 2 is facilitated, and disassembly of the nib assembly 2 is also facilitated when maintenance is required in the later stage.
Further, the strain sensor 33 is connected with the strain gauge 32 through the FPC cable 34, and the connection stability of two ends of the connection can be ensured by adopting the FPC cable 34, meanwhile, the FPC cable 34 is a flexible cable, so that the wiring is more convenient, and the internal space is saved.
Further, the FPC flat cable 34 is further connected with a BTB connector 35, by setting the BTB connector 35, the signal of the strain sensor 33 can be sent to the main control board of the electronic pen to process the signal, and the BTB connector 35 adopts a plug-in connection mode, so that the whole pressure sensing module is more conveniently connected with other components of the electronic pen.
Further, the strain sensor 33 is configured to collect a resistance change signal of the strain gauge 32, amplify the signal, and send the amplified signal to a main control board of the electronic pen, in this embodiment, the strain sensor 33 is a sensor commonly used in the prior art, including a wheatstone bridge and a signal amplifying component, and the principle thereof is a conventional technical means in the art, and is not an improvement point of the present application, and will not be described herein.
The utility model further provides an electronic pen, which comprises the electronic pen pressure sensing module according to any one of the embodiments. The electronic pen provided in this embodiment includes all the solutions of all the embodiments of the pressure sensing module, so that the electronic pen has at least the same technical effects as those of the pressure sensing module, which are not described herein.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The electronic pen pressure sensing module is characterized by comprising a pen tube assembly, a pen point assembly slidably arranged in the pen tube assembly and a pressure sensing assembly connected with the pen point assembly and used for collecting signals;
the pressure sensing assembly comprises an elastic body, one end of the elastic body is connected with the tail part of the pen point assembly, and the other end of the elastic body is fixed in the pen tube assembly; a strain gauge is arranged on the elastic body, and a strain sensor connected with the strain gauge is arranged in the pen tube assembly;
an auxiliary force arm used for limiting the sliding of the nib assembly is further arranged in the pen tube assembly, one end of the auxiliary force arm is connected with the nib assembly, and the other end of the auxiliary force arm is connected with the pen tube assembly.
2. The electronic pen pressure sensing module according to claim 1, wherein the elastic body is provided in a sheet-like structure, and the elastic body is provided in a vertical direction.
3. The electronic pen pressure sensing module of claim 1, wherein the auxiliary force arm comprises a first force arm, a second force arm and a third force arm, the first force arm and the third force arm are respectively connected with the pen tube assembly and the pen point assembly along the horizontal direction, the second force arm forms an included angle with the horizontal direction, and two ends of the second force arm are respectively connected with the first force arm and the second force arm.
4. The electronic pen pressure sensing module according to claim 3, wherein two auxiliary force arms are provided, and the two auxiliary force arms are arranged in parallel.
5. The electronic pen pressure sensing module according to claim 1, wherein the elastic body and the auxiliary force arm are integrally formed with the pen tube assembly.
6. The electronic pen pressure sensing module according to claim 1, wherein the nib assembly includes a nib body, a base for mounting the nib body, and a guide post for guiding sliding movement of the nib assembly is mounted to an end of the base.
7. The electronic pen pressure sensing module according to claim 6, wherein the pen tube assembly comprises a pen tube main body, a pen cap is mounted at the end of the pen tube main body, a sliding space for sliding the guide post is arranged in the pen cap, and the sliding space is set to be 0.2-0.4 mm in sliding distance for sliding the guide post.
8. The electronic pen pressure sensing module according to claim 1, wherein the strain sensor is connected to the strain gauge through an FPC cable.
9. The electronic pen pressure sensing module of claim 8, wherein the FPC flex is further connected with a BTB connector.
10. An electronic pen, characterized by comprising the electronic pen pressure sensing module set according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322222762.3U CN220357564U (en) | 2023-08-16 | 2023-08-16 | Electronic pen pressure sensing module and electronic pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322222762.3U CN220357564U (en) | 2023-08-16 | 2023-08-16 | Electronic pen pressure sensing module and electronic pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220357564U true CN220357564U (en) | 2024-01-16 |
Family
ID=89506847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322222762.3U Active CN220357564U (en) | 2023-08-16 | 2023-08-16 | Electronic pen pressure sensing module and electronic pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220357564U (en) |
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2023
- 2023-08-16 CN CN202322222762.3U patent/CN220357564U/en active Active
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