CN201903855U - Electromagnetic pen - Google Patents
Electromagnetic pen Download PDFInfo
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- CN201903855U CN201903855U CN2010206794191U CN201020679419U CN201903855U CN 201903855 U CN201903855 U CN 201903855U CN 2010206794191 U CN2010206794191 U CN 2010206794191U CN 201020679419 U CN201020679419 U CN 201020679419U CN 201903855 U CN201903855 U CN 201903855U
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- pen
- time writer
- piezoelectric element
- electromagnetic
- piezoelectric
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Abstract
The utility model discloses an electromagnetic pen, which belongs to the input field of electronic information equipment. The electromagnetic pen comprises a pen holder, a pen point extending out of the pen holder and a pen core connected with the pen point, as well as a piezoelectric composite plate connected with the pen core, wherein the piezoelectric composite plate comprises a piezoelectric element. When the electromagnetic pen is used for handwriting input, input mechanical energy from the pen point is transferred to the piezoelectric element through the pen core, and the mechanical energy is converted to electrical energy by utilizing the direct piezoelectric effect, thereby providing the required energy for a circuit in the electromagnetic pen. The electromagnetic pen is simple in structure, clean, pollution-free and low in cost, and the weight is lighter since no additional battery is contained in the pen; and the energy of the electromagnetic pen is transformed from the mechanical energy, thereby being capable of providing stable electromagnetic signals, reducing the power consumption of an induction plate and improving the strength and the energy conservation efficiency of the electromagnetic signals of the passive electromagnetic pen.
Description
Technical field
The utility model relates to electronic message unit input field, especially a kind of time writer.
Background technology
Computing machine, terminating machine and the electronic installation with similar functions need suitable input media, to make things convenient for user's input instruction, data or to click option on the display, to control the operation of this electronic installation.Touch input device comprises keyboard, mouse, rocking bar, contact panel, light pen, telepilot, digiboard etc.The tablets such as electronic whiteboard of digiboard or the electromagnetic type time writer of need arranging in pairs or groups, and cursor on the cooperation display device or icon, by time writer contact induction plate, to choose icon, handwriting or drawing, it is input media very easily, especially write and drawing function, be widely used in many electronic installations, such as computing machine, terminating machine, mobile phone, handheld digital secretary and contact panel etc.
Fig. 1 is the composition synoptic diagram of prior art electromagnetism hand input device, and this electromagnetism hand input device comprises time writer 101 and tablet 105, and wherein, time writer 101 comprises pen core 102, nib 103 and wiring board 104; Tablet 105 comprises a plurality of coil of X-direction, a plurality of coils that are distributed in Y direction of being distributed in, and can produce magnetic field after energising, with the resonant circuit generation electromagnetic induction on the wiring board 104, and receives the electromagnetic signal that time writer induces.By the electromagnetic signal of time writer 101 inductions is carried out respective handling, can obtain time writer residing position on tablet 105, along with varying in size that time writer 101 is exerted oneself on tablet 105, thus the hand-write input function of realization time writer.
The time writer that present electromagnetic induction digit board or electronic whiteboard are arranged in pairs or groups is divided into two kinds:
First kind is the pen (Battery EM Pen) that battery is arranged, and is called for short active time writer, and this type of technology is also referred to as active (Active) technology.Active pen is by inner powered battery, can make inner oscillatory circuit launch electromagnetic signal constantly, has following characteristic: the electromagnetic signal that can launch characteristic frequency after the time writer energising constantly, and the electromagnetic signal strength that time writer is launched can be consistent and signal is stronger, be not subjected to and tablet between the influence of distance.But owing to be provided with battery in the inside of pen, so the external form of pen is thicker, overall weight is heavier, and with dry cell or rechargeable battery as power supply, have potential pollution problem, be unfavorable for environmental protection; In addition, rechargeable battery needs pre-charge to use, and charging times is limited.
Another kind of is the pen (Battery-Free EM Pen) that does not have battery, is called for short the passive electrical magnetic pen, and this type of technology is also referred to as passive type (Passive) technology.The passive electrical magnetic pen produces electromagnetic induction by inner resonant circuit and tablet, and obtains energy, for the inner circuit working of pen.Because passive electrical magnetic pen inside does not have battery, so weight is light and external form is more very thin, still, for the passive electrical magnetic pen,, keep clear of tablet so need only time writer because energy is provided by tablet fully, just can't get access to electromagnetic energy; When time writer when tablet is far away more, the electromagnetic energy that can receive is just few more, thereby it is just weak more launch back the electromagnetic signal strength of tablet, energy conversion efficiency is lower than 1/20.
The utility model content
Technical problem to be solved in the utility model provides a kind of time writer, in light, environmental protection, improves the signal intensity and the energy conversion efficiency of time writer.
In order to solve the problems of the technologies described above, the utility model provides a kind of time writer, comprises penholder, stretches out in the outer nib of penholder, reaches the pen core that is connected with nib, and further, described penholder inside comprises: the compound piezoelectric sheet that is connected with described pen core.
In the such scheme, described penholder inside also comprises: charging capacitor that is connected with described compound piezoelectric sheet and the rectifier cell that is connected with described charging capacitor.
In the such scheme, described compound piezoelectric sheet comprises: metal profile and piezoelectric element, and the upper surface of described piezoelectric element is pasted on the lower surface of metal profile, and the lower surface of piezoelectric element is connected with described pen core.
In the such scheme, described piezoelectric element is lamination integrated piezoelectric potsherd or organic piezoelectrics, and every layer along thickness direction polarization, and layer with layer between be connected in parallel.
In the such scheme, the cross-sectional area of described metal profile is greater than the cross-sectional area of described piezoelectric element.
In the such scheme, described compound piezoelectric sheet also comprises the elastic support of the upper surface that sticks on metal profile.
In the such scheme, described elastic support is rubber or plastic cement or spring body.
In the such scheme, the cross section of described metal profile, piezoelectric element and elastic support all presents the structure that is complementary with penholder.
The time writer that the utility model provides is by being provided with the piezo-electric generating power supply that comprises the piezo-electric generating element in time writer, when time writer carries out handwriting input, to pass to the piezo-electric generating element by pen core from the input mechanical energy of nib, and utilize the direct piezo electric effect of piezo-electric generating element, thereby mechanical energy is converted to electric energy, for the time writer internal circuit provides work required energy, have simple in structure, cleanliness without any pollution, advantage with low cost.In addition, because the energy of time writer is transformed by mechanical energy, inside does not have balancing cell, and weight is lighter, and comparatively stable electromagnetic signal can be provided, and reduces the power consumption of tablet, improves the intensity and the energy conversion efficiency of passive electrical magnetic pen electromagnetic signal.
Description of drawings
Fig. 1 is the composition synoptic diagram of prior art electromagnetism hand input device;
The structural representation of the time writer that provides among the utility model embodiment is provided Fig. 2;
Fig. 3 is the longitudinal sectional view of the inner compound piezoelectric sheet of time writer described in the utility model embodiment.
Embodiment
Main thought of the present utility model is: by the piezo-electric generating element is set in time writer, power supply source as time writer, when time writer carries out handwriting input, to pass to the piezo-electric generating element by pen core from the input mechanical energy of nib, and utilize the direct piezo electric effect of piezo-electric generating element, thereby mechanical energy is converted to electric energy, for the time writer internal circuit provides required energy.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described.Obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills are obtained under the situation that does not break away from the utility model essence and spirit belongs to the scope that the utility model is open and protect.
The structural representation of the time writer that Fig. 2 provides for the utility model.Described time writer comprises penholder 21, nib 22 and the pen core 23 that is connected with nib, also comprises wiring board 24 in penholder 21 inside.Described time writer also comprises: the compound piezoelectric sheet 25 that is connected with described pen core 23.Described pen core 23 is used for nib 22 suffered pressure are passed to described compound piezoelectric sheet 25, promptly be used for the mechanical energy from nib 22 is passed to described compound piezoelectric sheet 25, after described compound piezoelectric sheet 25 receives described mechanical energy, by direct piezo electric effect described mechanical energy is converted to electric energy, and through after corresponding the processing being the wiring board power supply of time writer inside.
In the present embodiment, described compound piezoelectric sheet 25 is connected with charging capacitor by lead, is used for mechanical energy is converted into electric energy, and is stored in the charging capacitor; Described charging is used to store above-mentioned electric energy with capacitor, and the ac voltage signal in the capacitor is exported to rectifier cell; Described rectifier cell is connected with charging capacitor, is used for the ac voltage signal with described charging capacitor output, and output dc voltage is the wiring board power supply of time writer inside after rectification is handled.That is to say that described compound piezoelectric sheet, charging capacitor and rectifier cell constitute the piezo-electric generating power supply, the electric energy that produces by the piezo-electric generating power supply is the power supply of time writer internal circuit.In the present embodiment, described charging capacitor and rectifier cell all are provided with in the circuit board.
As shown in Figures 2 and 3, described compound piezoelectric sheet 25 comprises: piezoelectric element 201 and metal profile 202; The upper surface of described piezoelectric element 201 is pasted on the lower surface of metal profile 202, and the lower surface of piezoelectric element 201 is connected with pen core 23.Described metal profile 202 is used for fixing piezoelectric element 201; when external force acts on compound piezoelectric sheet; metal profile 202 pressurizeds produce crooked deformation; make the deformation of piezoelectric element 201 obtain certain buffering; in order to avoid crushing piezoelectric element 201, so metal profile 202 can also play the certain protection effect to piezoelectric element 201.Preferably, metal profile 202 can adopt elastic metallic material, as elastic copper sheet.
Be to increase the electric energy that is produced, described piezoelectric element 201 can be lamination integrated piezoelectric potsherd or organic piezoelectrics, and every layer along the thickness direction polarization, and layer with layer between be connected in parallel; Wherein, lamination integrated piezoelectric potsherd the layer with layer between be connected by adhering with epoxy resin or sintering mutually.In making the material of piezoelectric element, with lead zirconate titanate and be derivatized to and be divided into representative, the piezoelectric property that it had is present electromechanical conversion efficiency soprano.
As shown in Figures 2 and 3, described compound piezoelectric sheet 25 can also comprise elastic support 203, and described elastic support 203 is connected with the upper surface of metal profile 202; Preferably, elastic support 203 can stick on the upper surface of metal profile 202 by epoxy resin; Described elastic support 203 is rubber or plastic cement or spring body.Because the electric energy that piezoelectric effect produces can produce instantaneous high pressure; can slow down the deformation resume speed of piezoelectric element 202 by the screen resilience of elastic support 203; thereby prolong duration of charging, and elastic support 203 also can play the certain protection effect to piezoelectric element 201 to charging capacitor.
Utilize above-mentioned time writer, when nib 22 contact induction plates, nib passes to described piezoelectric element 201 with the mechanical energy that is subjected to by pen core, piezoelectric element 201, metal profile 202 and elastic support 203 equal pressurizeds produce distortion, piezoelectric element 201 is converted into electric energy according to direct piezo electric effect with mechanical energy, charging capacitor is charged, after handling through the rectification of rectifier cell, obtaining DC voltage provides work required electric energy for the circuit in the pen again.
In a preferred embodiment of the present utility model, the cross-sectional area of described metal profile 202 can well protect piezoelectric element not crushed greater than the cross-sectional area of described piezoelectric element 201 like this.
In a preferred embodiment of the present utility model, the cross section of described piezoelectric element 201, metal profile 202 and elastic support 203 all presents the structure that is complementary with penholder, as: convex structure, to match with the shape of penholder better.Certainly, can present other shape, as rectangular parallelepiped or right cylinder, the utility model is not limited this yet.
In preferable embodiment of the present utility model, the piezoelectric modulus of piezoelectric ceramic piece or organic piezoelectrics is the bigger the better, and like this, required to write pressure just very little, just can prevent that display panel from being scratched.Penholder is an insulating material, can prevent that like this hand or other approach of static charge by the people from leaking.
Time writer provided by the utility model adopts piezoelectric power supplies that source technology is arranged, its advantage that shows is: the first, owing to do not have balancing cell in the pen, the weight of time writer is low weight and external form is more very thin, after long-time the use, can not cause user's wrist fatigue yet; Need not to change battery, can reduce trouble and expense expenditure that the user changes battery; The second, the structure of the active pen of piezoelectricity and sealing are better than battery-powered active pen, and voltage is descended, and the pressure sensitivity characteristic of pen can not change.The 3rd, time writer obtains energy by the piezo-electric generating power supply, comparatively stable electromagnetic signal can be provided, and signal intensity is better, energy conversion rate is improved, time writer need be lower from the intensity in tablet acquisition magnetic field, thereby reduced the power consumption of tablet, reduced the influence of electromagnetic radiation to people's health as much as possible.The 4th, because time writer and tablet all have energy, make time writer and tablet in the interaction of magnetic field and on the jamproof allotment problem, have more bigger advantage, fundamentally reduced production cost from technological layer.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (8)
1. a time writer comprises penholder, stretches out in the outer nib of penholder, reaches the pen core that is connected with nib, it is characterized in that described penholder inside comprises: the compound piezoelectric sheet that is connected with described pen core.
2. time writer according to claim 1 is characterized in that, described penholder inside also comprises: charging capacitor that is connected with described compound piezoelectric sheet and the rectifier cell that is connected with described charging capacitor.
3. time writer according to claim 2 is characterized in that,
Described compound piezoelectric sheet comprises: metal profile and piezoelectric element, and the upper surface of described piezoelectric element is pasted on the lower surface of metal profile, and the lower surface of piezoelectric element is connected with described pen core.
4. time writer according to claim 3 is characterized in that, described piezoelectric element is lamination integrated piezoelectric potsherd or organic piezoelectrics, and every layer along thickness direction polarization, and layer with layer between be connected in parallel.
5. according to claim 3 or 4 described time writers, it is characterized in that the cross-sectional area of described metal profile is greater than the cross-sectional area of described piezoelectric element.
6. time writer according to claim 3 is characterized in that described compound piezoelectric sheet also comprises the elastic support of the upper surface that sticks on metal profile.
7. time writer according to claim 6 is characterized in that, described elastic support is rubber or plastic cement or spring body.
8. time writer according to claim 6 is characterized in that the cross section of described metal profile, piezoelectric element and elastic support all presents the structure that is complementary with penholder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206794191U CN201903855U (en) | 2010-12-24 | 2010-12-24 | Electromagnetic pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206794191U CN201903855U (en) | 2010-12-24 | 2010-12-24 | Electromagnetic pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201903855U true CN201903855U (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206794191U Expired - Lifetime CN201903855U (en) | 2010-12-24 | 2010-12-24 | Electromagnetic pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201903855U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293152A (en) * | 2016-09-05 | 2017-01-04 | 合肥京东方光电科技有限公司 | Active pointer and touch control display apparatus |
| CN109445621A (en) * | 2018-12-20 | 2019-03-08 | 四川仪岛科技有限公司 | A kind of permanent magnetism position indicator |
-
2010
- 2010-12-24 CN CN2010206794191U patent/CN201903855U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106293152A (en) * | 2016-09-05 | 2017-01-04 | 合肥京东方光电科技有限公司 | Active pointer and touch control display apparatus |
| CN109445621A (en) * | 2018-12-20 | 2019-03-08 | 四川仪岛科技有限公司 | A kind of permanent magnetism position indicator |
| CN109445621B (en) * | 2018-12-20 | 2023-11-28 | 四川仪岛科技有限公司 | Permanent magnet position indicator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161121 Address after: 100193 Beijing, Haidian District, northeast Wang West Road, building 3, floor 363, room 5, room 8 Patentee after: BEIJING HANVON PENGTAI TECHNOLOGY CO., LTD. Address before: 100193 Beijing, northeast Wang West Road, building 8, intellectual property department, building No. 5, Haidian District Patentee before: Hanwang Tech Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100193 363, 3 floor, 5 building, 8 Northeast Road, Haidian District, Beijing. Patentee after: Beijing Hanvon Peng Thai Polytron Technologies Inc Address before: 100193 363, 3 floor, 5 building, 8 Northeast Road, Haidian District, Beijing. Patentee before: BEIJING HANVON PENGTAI TECHNOLOGY CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110720 |