CN209765464U - electromagnetic pen - Google Patents
electromagnetic pen Download PDFInfo
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- CN209765464U CN209765464U CN201920893216.3U CN201920893216U CN209765464U CN 209765464 U CN209765464 U CN 209765464U CN 201920893216 U CN201920893216 U CN 201920893216U CN 209765464 U CN209765464 U CN 209765464U
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Abstract
The utility model provides an electromagnetic pen. This electromagnetic pen includes: the pen comprises a pen tube, a pen core, an inductor and an inductor adjusting piece; the refill is arranged in the pen tube, a pen point of the refill extends out of the bottom end of the pen tube, the inductor is arranged in the pen tube and is in contact with the refill, and the inductance value of the inductor is reduced along with the increase of the pressure of handwriting input applied to the refill; the inductance adjusting piece is connected with the inductor, the initial inductance value of the inductor is different along with the difference of the size of the inductance adjusting piece, and the initial inductance value is the inductance value of the inductor when the pressure of handwriting input applied to the pen refill is zero. The utility model discloses a change the size of inductance adjustment spare, can realize the adjustment of the curve of the handwriting thickness of electromagnetic pen output along with handwriting input's pressure variation in size, can reduce the production degree of difficulty and the manufacturing cost of the electromagnetic pen of different attributes, promote product competitiveness.
Description
Technical Field
The utility model relates to an electromagnetic input technical field especially relates to an electromagnetic pen.
Background
The electromagnetic pen is a common computer peripheral product, and the matched equipment is an electromagnetic plate. The trace coordinate and pressure of the electromagnetic pen moving on the electromagnetic plate can be transmitted to the computer through the electromagnetic plate, and the purpose of writing and drawing is achieved.
When using the electromagnetic pen to write, the thickness of the handwriting that the user often need adjust the production, especially under complicated scenes such as drawing, consequently, in order to strengthen the function of electromagnetic pen, promote user experience, current electromagnetic pen has begun to adopt the technique of the different thickness of handwriting of pressure size output according to handwriting input, wherein, the measurement of pressure size mainly is realized according to the change of the received signal waveform phase place that the inductance value change leads to in the electromagnetic pen.
The inherent properties and functions of the existing electromagnetic pen are designed and shaped when an electronic circuit and a mechanism die are designed, the inherent properties and functions are adjusted unchanged at the later stage, and the inherent properties and functions of the existing electromagnetic pen are more difficult to adjust, especially the inherent properties and functions of the electromagnetic pen which is designed and shaped and manufactured by completing the die manufacture and starting to produce.
For the relation between the pressure of handwriting input and the thickness of output handwriting in an electromagnetic pen, a user has different requirements in different application scenes, under the condition of adopting the same design and a die, the relation between the pressure of the handwriting input and the thickness of the output handwriting cannot be produced, namely, a plurality of electromagnetic pens with the variation curves of different handwriting thicknesses along with the pressure of the handwriting input cannot be produced, if the variation curve of the thickness of the output handwriting along with the pressure of the handwriting input needs to be changed, the die needs to be modified or the die needs to be re-opened, even an electronic circuit needs to be changed, the cost is higher, a large number of components cannot be shared, the number of material samples in production is too large, the production control difficulty is high, and the yield cannot be guaranteed.
Therefore, it is necessary to provide a new electromagnetic pen to solve the above problems, improve the flexibility of adjusting the properties of the electromagnetic pen, reduce the production difficulty and the production cost of the electromagnetic pen with different properties, and improve the product competitiveness.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electromagnetic pen can promote the flexibility of electromagnetic pen attribute adjustment, reduces the production degree of difficulty and the manufacturing cost of the electromagnetic pen of different attributes, promotes product competitiveness.
in order to achieve the above object, the utility model provides an electromagnetic pen, include: the pen comprises a pen tube, a pen core, an inductor and an inductor adjusting piece;
The refill is arranged in the pen tube, a pen point of the refill extends out of the bottom end of the pen tube, the inductor is arranged in the pen tube and is in contact with the refill, and the inductance value of the inductor is reduced along with the increase of the pressure of handwriting input applied to the refill;
the inductance adjusting piece is connected with the inductor, the initial inductance value of the inductor is different along with the difference of the size of the inductance adjusting piece, and the initial inductance value is the inductance value of the inductor when the pressure of handwriting input applied to the pen refill is zero.
The inductor comprises a fixed iron powder core, a coil winding and a movable iron powder core;
the fixed iron powder core is fixed in the pen tube and sleeved on the pen core; the movable iron powder core is arranged in the pen tube and is positioned at one end of the fixed iron powder core, which is far away from the pen point; and the coil winding is wound on the fixed iron powder core.
The inductance adjusting piece is a spacer, the spacer is located in the pencil tube and the clamp is located fixed iron powder core with between the activity iron powder core, make fixed iron powder core with the initial interval distance of activity iron powder core changes through the difference of the thickness that sets up the spacer, and then changes the initial inductance value of inductance.
The electromagnetic pen further comprises an elastic piece, wherein the elastic piece is arranged at one end, away from the pen point, of the movable iron powder core, and the two ends of the elastic piece are respectively in contact with the movable iron powder core and the top end of the pen tube.
The elastic member includes: the elastic rubber column and the spring are arranged at one end, far away from the pen point, of the elastic rubber column.
The electromagnetic pen is still including locating PCBA circuit board in the pen pipe, be equipped with on the PCBA circuit board with the parallelly connected electric capacity of coil winding.
The coil winding is made of copper.
The center of the fixed iron powder core is provided with a first through hole, the spacing piece is provided with a second through hole communicated with the first through hole, and one end of the pen point far away from the pen core sequentially penetrates through the first through hole and the second through hole to be abutted against the movable iron powder core.
the utility model has the advantages that: the utility model provides an electromagnetic pen, include: the pen comprises a pen tube, a pen core, an inductor and an inductor adjusting piece; the refill is arranged in the pen tube, a pen point of the refill extends out of the bottom end of the pen tube, the inductor is arranged in the pen tube and is in contact with the refill, and the inductance value of the inductor is reduced along with the increase of the pressure of handwriting input applied to the refill; the inductance adjusting piece is connected with the inductance, the initial inductance value of inductance is along with the difference of the size of inductance adjusting piece is different, initial inductance value is for applying the pressure of handwriting input on the refill is zero, the inductance value of inductance can change the initial inductance value of inductance through setting up the inductance adjusting piece of different sizes, realizes the adjustment of the curve of the handwriting thickness of electromagnetic pen output along with the pressure variation of handwriting input, and then promotes the flexibility of electromagnetic pen attribute adjustment, reduces the production degree of difficulty and the manufacturing cost of the electromagnetic pen of different attributes, promotes product competitiveness.
drawings
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the present invention and accompanying drawings, which are provided for the purpose of illustration and description and are not intended to limit the present invention.
In the drawings, there is shown in the drawings,
FIG. 1 is an exploded view of the electromagnetic pen of the present invention;
FIG. 2 is a cross-sectional view of the electromagnetic pen of the present invention;
FIG. 3 is a flow chart of the method for manufacturing the electromagnetic pen of the present invention;
Fig. 4 is a curve showing the variation of the thickness of the handwriting output by the electromagnetic pen according to the pressure of the handwriting input.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 1 and 2, the present invention provides an electromagnetic pen, including: the pen comprises a pen tube 10, a pen core 20, an inductor 30 and an inductor adjusting piece 40;
The pen core 20 is arranged in the pen tube 10, the pen point 21 of the pen core 20 extends out of the bottom end of the pen tube 10, the inductor 30 is arranged in the pen tube 10 and is in contact with the pen core 20, and the inductance value of the inductor 30 is reduced along with the increase of the pressure of the handwriting input applied to the pen core 20;
The inductance-adjusting member 40 is connected to the inductor 30, and an initial inductance value of the inductor 30, which is an inductance value of the inductor 30 when the pressure of the handwriting input applied to the pen core 20 is zero, is different according to the size of the inductance-adjusting member 40.
Specifically, the inductor 30 includes a fixed iron powder core 31, a coil winding 32, and a movable iron powder core 33;
The fixed iron powder core 31 is fixed in the pen tube 10 and sleeved on the pen core 20; the movable iron powder core 33 is arranged in the pen tube 10 and is positioned at one end of the fixed iron powder core 31 far away from the pen point 21; the coil winding 32 is wound around the fixed iron powder core 31.
Specifically, the inductance adjusting member 40 is a spacer, the spacer is disposed in the pen tube 10 and clamped between the fixed iron powder core 31 and the movable iron powder core 33, and the initial distance between the fixed iron powder core 31 and the movable iron powder core 33 is changed by setting the thickness of the spacer, so as to change the initial inductance value of the inductor 30.
Specifically, the electromagnetic pen further comprises an elastic element 50, wherein the elastic element 50 is arranged at one end of the movable iron powder core 33, which is far away from the pen point 21, and two ends of the elastic element are respectively contacted with the movable iron powder core 33 and the top end of the pen tube 10.
Further, the elastic member 50 includes: an elastic rubber column 51 and a spring 52 provided at one end of the elastic rubber column 51 away from the pen tip 21.
specifically, the electromagnetic pen further comprises a PCBA circuit board arranged in the pen tube 10, and a capacitor connected in parallel with the coil winding 32 is arranged on the PCBA circuit board.
Preferably, the material of the coil winding 32 is copper.
Specifically, a first through hole 311 is arranged in the center of the fixed iron powder core 31, a second through hole 312 which is communicated with the first through hole 311 is arranged on the spacer, and one end, far away from the pen point 21, of the pen core 20 sequentially penetrates through the first through hole 311 and the second through hole 312 to abut against the movable iron powder core 33.
It should be noted that the electromagnetic pen is used for cooperating with an electronic handwriting board, specifically, the electromagnetic pen is used for writing on the electronic handwriting board by using the pen core 20 of the electromagnetic pen, and by applying pressure to the pen core 20, the movable iron powder core 33 moves towards the top of the pen tube 10, so as to change the spacing distance between the movable iron powder core 33 and the fixed iron powder core 31, so that the inductance value of the inductor 30 formed by the fixed iron powder core 31, the coil winding 32 and the movable iron powder core 33 is changed, and further, the resonance frequency generated by the inductor 30 and the capacitor on the PCBA circuit board is changed, and finally, electronic handwriting with different thicknesses is generated on the electronic handwriting board.
Further, the formula of the resonant frequency of the electromagnetic pen is as follows:
Wherein F is the resonant frequency, L is the inductance of the inductor 30, and C is the capacitance of the capacitor on the PCBA circuit board;
it can be seen that, when the capacitance value C of the capacitor on the PCBA circuit board is unchanged, the greater the inductance value L of the inductor 30, the lower the resonant frequency; whereas the inductance L of the inductor 30 is related to the distance between the fixed and movable cores 31 and 33, the inductance L of the inductor 30 decreases in square proportion to the increase in the distance between the fixed and movable cores 31 and 33.
According to the above, taking the inductance adjusting member 40 as the spacer as an example, as shown in fig. 4, fig. 4 is a graph showing that the thickness of the handwriting outputted by the electromagnetic pen varies with the pressure of the handwriting input, and the initial point of the graph showing that the thickness of the handwriting outputted by the electromagnetic pen varies with the pressure of the handwriting input is the original point in fig. 4, corresponding to the prior art of the spacer which is not provided, the initial point of the graph showing that the thickness of the handwriting outputted by the electromagnetic pen varies with the pressure of the handwriting input is point a in fig. 4, corresponding to the first embodiment of the present invention which is provided with the spacer of the first thickness, the initial point of the graph showing that the thickness of the handwriting outputted by the electromagnetic pen varies with the pressure of the handwriting input is point B in fig. 4, corresponding to the third embodiment of the present invention which is provided with the spacer of the second thickness, the starting point of the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is the point C in the graph 4, wherein the first thickness is smaller than the second thickness, the second thickness is smaller than the third thickness, as can be known from the graph 4, along with the increase of the thickness of the spacing piece, the starting point of the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is changed, the thinner the thickness is, the steeper the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is, the thicker the thickness is, the gentler the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is, thereby, the utility model can be realized by setting the spacing pieces with different thicknesses, and the adjustment of the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is realized, so that the electromagnetic pen is suitable, for example, as sketches, water paintings, oil paintings, brushes, or the like.
Therefore, the utility model discloses can change fixed iron powder core through the spacer that sets up different thickness with the initial spacing distance of activity iron powder core, realize the adjustment of the handwriting thickness of electromagnetic pen output along with the curve of handwriting input's pressure variation, and then promote the flexibility of electromagnetic pen attribute adjustment, reduce the production degree of difficulty and the manufacturing cost of the electromagnetic pen of different attributes, promote product competitiveness.
referring to fig. 3, the method for manufacturing the electromagnetic pen of the present invention includes the following steps:
Step S1, providing a curve of the thickness of the handwriting output by the electromagnetic pen to be made along with the change of the pressure of the handwriting input;
Step S2, providing an inductance adjusting piece 40 with a corresponding size according to a curve that the thickness of the handwriting output by the electromagnetic pen to be manufactured changes along with the pressure of handwriting input;
Step S3, providing the pen tube 10, the pen core 20 and the inductor 30, and assembling the pen tube 10, the pen core 20, the inductor 30 and the inductor adjusting piece 40 to obtain an electromagnetic pen;
After assembly, the pen core 20 is arranged in the pen tube 10, the pen point 21 of the pen core 20 extends out of the bottom end of the pen tube 10, the inductor 30 is arranged in the pen tube 10 and is in contact with the pen core 20, and the inductance value of the inductor 30 can be reduced along with the increase of the pressure of the handwriting input applied to the pen core 20; the inductance-adjusting member 40 is connected to the inductor 30, and an initial inductance value of the inductor 30, which is an inductance value of the inductor 30 when the pressure of the handwriting input applied to the pen core 20 is zero, is different according to the size of the inductance-adjusting member 40.
specifically, the inductor 30 includes a fixed iron powder core 31, a coil winding 32, and a movable iron powder core 33;
The fixed iron powder core 31 is fixed in the pen tube 10 and sleeved on the pen core 20; the movable iron powder core 33 is arranged in the pen tube 10 and is positioned at one end of the fixed iron powder core 31 far away from the pen point 21; the coil winding 32 is wound on the fixed iron powder core 31;
the inductance adjusting member 40 is a spacer, the spacer is disposed in the pen tube 10 and clamped between the fixed iron powder core 31 and the movable iron powder core 33, and the initial distance between the fixed iron powder core 31 and the movable iron powder core 33 is changed by setting the thickness of the spacer, so as to change the initial inductance value of the inductor 30.
Specifically, the electromagnetic pen further comprises an elastic element 50, wherein the elastic element 50 is arranged at one end of the movable iron powder core 33, which is far away from the pen point 21, and two ends of the elastic element are respectively contacted with the movable iron powder core 33 and the top end of the pen tube 10.
Further, the elastic member 50 includes: an elastic rubber column 51 and a spring 52 provided at one end of the elastic rubber column 51 away from the pen tip 21.
Specifically, the electromagnetic pen further comprises a PCBA circuit board arranged in the pen tube 10, and a capacitor connected in parallel with the coil winding 32 is arranged on the PCBA circuit board.
Preferably, the material of the coil winding 32 is copper.
Specifically, a first through hole 311 is arranged in the center of the fixed iron powder core 31, a second through hole 312 which is communicated with the first through hole 311 is arranged on the spacer, and one end, far away from the pen point 21, of the pen core 20 sequentially penetrates through the first through hole 311 and the second through hole 312 to abut against the movable iron powder core 33.
It should be noted that the electromagnetic pen is used for cooperating with an electronic handwriting board, specifically, the electromagnetic pen is used for writing on the electronic handwriting board by using the pen core 20 of the electromagnetic pen, and by applying pressure to the pen core 20, the movable iron powder core 33 moves towards the top of the pen tube 10, so as to change the spacing distance between the movable iron powder core 33 and the fixed iron powder core 31, so that the inductance value of the inductor 30 formed by the fixed iron powder core 31, the coil winding 32 and the movable iron powder core 33 is changed, and further, the resonance frequency generated by the inductor 30 and the capacitor on the PCBA circuit board is changed, and finally, electronic handwriting with different thicknesses is generated on the electronic handwriting board.
Further, the formula of the resonant frequency of the electromagnetic pen is as follows:
wherein F is the resonant frequency, L is the inductance of the inductor 30, and C is the capacitance of the capacitor on the PCBA circuit board;
It can be seen that, when the capacitance value C of the capacitor on the PCBA circuit board is unchanged, the greater the inductance value L of the inductor 30, the lower the resonant frequency; whereas the inductance L of the inductor 30 is related to the distance between the fixed and movable cores 31 and 33, the inductance L of the inductor 30 decreases in square proportion to the increase in the distance between the fixed and movable cores 31 and 33.
according to the above, taking the inductance adjusting member 40 as the spacer as an example, as shown in fig. 4, fig. 4 is a graph showing that the thickness of the handwriting outputted by the electromagnetic pen varies with the pressure of the handwriting input, and the initial point of the graph showing that the thickness of the handwriting outputted by the electromagnetic pen varies with the pressure of the handwriting input is the original point in fig. 4, corresponding to the prior art of the spacer which is not provided, the initial point of the graph showing that the thickness of the handwriting outputted by the electromagnetic pen varies with the pressure of the handwriting input is point a in fig. 4, corresponding to the first embodiment of the present invention which is provided with the spacer of the first thickness, the initial point of the graph showing that the thickness of the handwriting outputted by the electromagnetic pen varies with the pressure of the handwriting input is point B in fig. 4, corresponding to the third embodiment of the present invention which is provided with the spacer of the second thickness, the starting point of the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is the point C in the graph 4, wherein the first thickness is smaller than the second thickness, the second thickness is smaller than the third thickness, as can be known from the graph 4, along with the increase of the thickness of the spacing piece, the starting point of the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is changed, the thinner the thickness is, the steeper the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is, the thicker the thickness is, the gentler the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is, thereby, the utility model can be realized by setting the spacing pieces with different thicknesses, and the adjustment of the curve of the thickness of the handwriting output by the electromagnetic pen changing along with the pressure of the handwriting input is realized, so that the electromagnetic pen is suitable, for example, as sketches, water paintings, oil paintings, brushes, or the like.
therefore, use the utility model discloses when the manufacturing method production of electromagnetic pen has the electromagnetic pen of the curve of different handwriting thickness along with handwriting input's pressure size variation, only need provide not unidimensional inductance adjusting part 40 can, need not change the design of design or the electronic circuit of electromagnetic pen, also need not change the production mould of electromagnetic pen, usable same design of design and same production mould, the production obtains the electromagnetic pen that has different attributes, and then the flexibility of promotion electromagnetic pen attribute adjustment, reduce the production degree of difficulty and the manufacturing cost of the electromagnetic pen of different attributes, promote product competitiveness.
To sum up, the utility model provides an electromagnetic pen, include: the pen comprises a pen tube, a pen core, an inductor and an inductor adjusting piece; the refill is arranged in the pen tube, a pen point of the refill extends out of the bottom end of the pen tube, the inductor is arranged in the pen tube and is in contact with the refill, and the inductance value of the inductor is reduced along with the increase of the pressure of handwriting input applied to the refill; the inductance adjusting piece is connected with the inductance, the initial inductance value of inductance is along with the difference of the size of inductance adjusting piece is different, initial inductance value is for applying the pressure of handwriting input on the refill is zero, the inductance value of inductance can change the initial inductance value of inductance through setting up the inductance adjusting piece of different sizes, realizes the adjustment of the curve of the handwriting thickness of electromagnetic pen output along with the pressure variation of handwriting input, and then promotes the flexibility of electromagnetic pen attribute adjustment, reduces the production degree of difficulty and the manufacturing cost of the electromagnetic pen of different attributes, promotes product competitiveness.
From the above, it is obvious to those skilled in the art that various other changes and modifications can be made according to the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protection scope of the claims of the present invention.
Claims (8)
1. an electromagnetic pen, comprising: the pen comprises a pen tube (10), a pen core (20), an inductor (30) and an inductor adjusting piece (40);
The refill (20) is arranged in the pen tube (10), a pen point (21) of the refill (20) extends out of the bottom end of the pen tube (10), the inductor (30) is arranged in the pen tube (10) and is in contact with the refill (20), and the inductance value of the inductor (30) is reduced along with the increase of the pressure of handwriting input applied to the refill (20);
the inductance-adjusting member (40) is connected to the inductor (30), and an initial inductance value of the inductor (30) is different according to the size of the inductance-adjusting member (40), and is an inductance value of the inductor (30) when the pressure of the handwriting input applied to the pen core (20) is zero.
2. The electromagnetic pen according to claim 1, wherein the inductor (30) comprises a stationary ferrite core (31), a coil winding (32) and a movable ferrite core (33);
the fixed iron powder core (31) is fixed in the pen tube (10) and sleeved on the pen core (20); the movable iron powder core (33) is arranged in the pen tube (10) and is positioned at one end of the fixed iron powder core (31) far away from the pen point (21); and the coil winding (32) is wound on the fixed iron powder core (31).
3. The electromagnetic pen according to claim 2, wherein the inductance-adjusting member (40) is a spacer which is disposed in the pen tube (10) and sandwiched between the fixed iron powder core (31) and the movable iron powder core (33), and the initial distance between the fixed iron powder core (31) and the movable iron powder core (33) is changed by setting the thickness of the spacer, thereby changing the initial inductance value of the inductor (30).
4. The electromagnetic pen according to claim 2, further comprising an elastic member (50), wherein the elastic member (50) is disposed at an end of the movable chalk core (33) away from the pen tip (21), and both ends of the elastic member contact the movable chalk core (33) and the tip end of the pen tube (10), respectively.
5. The electromagnetic pen according to claim 4, characterized in that the resilient member (50) comprises: the pen comprises an elastic rubber column (51) and a spring (52) arranged at one end of the elastic rubber column (51) far away from the pen point (21).
6. The electromagnetic pen of claim 2, further comprising a PCBA circuit board disposed within the pen barrel (10), the PCBA circuit board having a capacitor disposed thereon in parallel with the coil winding (32).
7. electromagnetic pen according to claim 2, characterized in that the material of the coil winding (32) is copper.
8. the electromagnetic pen according to claim 3, wherein a first through hole (311) is formed in the center of the fixed iron powder core (31), a second through hole (312) which is communicated with the first through hole (311) is formed in the spacing piece, and one end, far away from the pen point (21), of the pen core (20) sequentially penetrates through the first through hole (311) and the second through hole (312) to abut against the movable iron powder core (33).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920893216.3U CN209765464U (en) | 2019-06-13 | 2019-06-13 | electromagnetic pen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920893216.3U CN209765464U (en) | 2019-06-13 | 2019-06-13 | electromagnetic pen |
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| CN209765464U true CN209765464U (en) | 2019-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297553A (en) * | 2019-06-13 | 2019-10-01 | 深圳市精源宇科技有限公司 | Time writer and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110297553A (en) * | 2019-06-13 | 2019-10-01 | 深圳市精源宇科技有限公司 | Time writer and preparation method thereof |
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