TWM524951U - Electromagnetic pen - Google Patents

Description

Electromagnetic pen

This creation is about an electromagnetic pen, especially about an electromagnetic pen that enhances electromagnetic induction.

An electromagnetic induction type touch panel is an input device using electromagnetic technology. For example, a touch panel such as a mobile communication device, a digital tablet, a digital whiteboard or a drawing board, when the electromagnetic pen is written on the touch surface of the touch panel, electromagnetic The pen can emit an electromagnetic signal of a specific frequency, and the touchpad receives the electromagnetic signal, and the position, the state of the button, the frequency change, and the like of the electromagnetic pen are displayed on a display device such as a screen by software calculation.

In addition, the electromagnetic pen can be divided into an active electromagnetic pen and a passive electromagnetic pen. The active electromagnetic pen itself needs to be powered by a battery, and the passive electromagnetic pen does not need to be powered by a battery. Compared with a touchpad using a passive electromagnetic pen, a touchpad using an active electromagnetic pen does not need to emit energy to the electromagnetic pen, and the energy is completely provided by the corresponding touchpad, so that it is not only more energy-efficient, but also a coordinate The data transfer rate is also faster.

However, for a passive electromagnetic pen, since the energy is completely provided by the sensor board, when the electromagnetic pen is not close to the touch panel, electromagnetic energy cannot be acquired, in other words, the farther the electromagnetic pen is from the touch panel, the more it can receive. The less electromagnetic energy, the electromagnetic radiation that is emitted back to the touchpad The weaker the signal strength.

This creation provides an electromagnetic pen that enhances the electromagnetic induction of the electromagnetic pen.

The present invention proposes an electromagnetic pen comprising a housing unit, a circuit board unit, a pressure sensing unit and a core unit. The circuit board unit is disposed inside the housing unit. The pressure sensing unit is disposed inside the housing unit, the circuit board unit is electrically coupled to the pressure sensing unit, and the pressure sensing unit includes a magnetic sensing structure, and the magnetic sensing structure includes a receiving portion. The refill unit includes opposite first ends and second ends, and the refill unit is coupled to the pressure sensing unit, wherein the first end of the refill unit is detachably disposed in the receiving portion, and the second end of the refill unit is located in the housing Outside the body unit.

Based on the above, in the electromagnetic pen of the present invention, the interior of the magnetic sensitive structure is hollowed out to form a receiving groove, and the refill unit is directly placed in the receiving groove, so that it is not necessary to separately provide a refill seat, thereby reducing The distance between the magnetic sensitive structure and the handwriting input device is used to enhance the signal strength of the electromagnetic induction between the electromagnetic pen and the handwriting input device.

Furthermore, since the distance between the magnetic sensitive structure and the handwriting input device is reduced, the magnetic lines of force formed by the magnetic sensitive structure are less affected by the tilt of the electromagnetic pen, so that the position of the electromagnetic pen to be manipulated and the display of the handwriting input device can be reduced. The difference in the position of the indicator.

In addition, the refill unit is detachably placed in the accommodating portion, and is convenient for the user to disassemble and assemble, thereby improving the convenience of use.

100, 200, 300, 400, 500, 600‧‧‧ electromagnetic pens

110‧‧‧Sheet unit

120‧‧‧Circuit unit

130, 230, 430‧‧ ‧ pressure sensitive unit

132, 232, 432‧‧ ‧ magnetic structure

132a, 232a‧‧‧ 容 部

432a‧‧‧Second anti-rotation department

234, 434‧‧‧ pedestal

434a‧‧‧First Anti-rotation Department

236‧‧‧Induction coil

140‧‧‧Refill unit

142‧‧‧ first end

144‧‧‧ second end

350‧‧‧ Conductive shrapnel structure

560, 660‧‧‧ Elastomers

670‧‧ ‧ spring

Fig. 1 is a schematic view showing the electromagnetic pen of the first embodiment of the present invention.

Fig. 2 is a schematic view showing the electromagnetic pen of the second embodiment of the present invention.

Fig. 3 is a schematic view showing the electromagnetic pen of the third embodiment of the present invention.

Fig. 4 is a schematic view showing the electromagnetic pen of the fourth embodiment of the present invention.

Fig. 5 is a schematic view showing the electromagnetic pen of the fifth embodiment of the present invention.

Fig. 6 is a schematic view showing the electromagnetic pen of the sixth embodiment of the present invention.

The specific embodiments of the present invention are further described below in conjunction with the drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot limit the scope of protection of the present invention.

Fig. 1 is a schematic view showing the electromagnetic pen of the first embodiment of the present invention. Referring to Figure 1, the electromagnetic pen 100 is a batteryless electromagnetic pen. The electromagnetic pen 100 can be used with a handwriting input device including a sensing antenna circuit. The handwriting input device is, for example, a digital tablet, a digital whiteboard, or a drawing board, but the creation is not limited thereto.

The electromagnetic pen 100 includes a housing unit 110, a circuit board unit 120, a pressure sensing unit 130, and a core unit 140.

The housing unit 110 has an accommodating space therein, and the circuit board unit 120, the pressure sensing unit 130, and the partial refill unit 140 can be installed in the accommodating space of the housing unit 110. The housing unit 110 can be made of any metal material, such as copper, aluminum, stainless steel, etc. In other embodiments, the housing unit 110 can be made of plastic, and the material of the housing unit can be selected depending on the actual product. quality.

The circuit board unit 120 is disposed inside the housing unit 110.

The pressure sensing unit 130 is disposed inside the housing unit 110 , and the circuit board unit 120 is electrically coupled to the pressure sensing unit 130 . In the present embodiment, the pressure sensitive unit 130 includes a magnetically sensitive structure 132. The magnetically sensitive structure 132 includes a magnetic material such as an iron powder core, a ferromagnetic material, or a ferrite magnet.

The magnetically sensitive structure 132 includes a receiving portion 132a, wherein the receiving portion 132a is a groove formed by hollowing out one side of the magnetically sensitive structure 132.

The refill unit 140 is coupled to the pressure sensing unit 130, and the shape of the refill unit 140 and the shape of the accommodating portion 132a cooperate with each other. The refill unit 140 includes opposing first ends 142 and second ends 144. The first end 142 of the refill unit 140 is detachably disposed in the accommodating portion 132a, and the second end 144 of the refill unit 140 is located outside the housing unit 110.

Under this configuration, in this embodiment, the interior of the magnetic sensitive structure 132 is hollowed out to form a receiving groove 132a, and the refill unit 140 is directly placed in the receiving groove 132a, so that no additional pen holder is needed. The distance between the magnetic sensitive structure 132 and the handwriting input device can be reduced, thereby increasing the signal strength of the electromagnetic induction between the electromagnetic pen and the handwriting input device.

Moreover, since the distance between the magnetic sensitive structure 132 and the handwriting input device is reduced, the magnetic lines of force formed by the magnetic sensitive structure 132 are less affected by the tilt of the electromagnetic pen 100, so that the position of the electromagnetic pen 100 to be manipulated and the handwriting can be reduced. Enter the difference in the position of the indicator displayed by the device.

In addition, the refill unit 140 is detachably disposed in the accommodating portion 132a, that is, the refill unit 140 is detachably mounted in the accommodating portion 132a, and is convenient for the user to disassemble and improve the usability.

Fig. 2 is a schematic view showing the electromagnetic pen of the second embodiment of the present invention. Please refer to Figure 2. The electromagnetic pen 200 of Fig. 2 is similar to the electromagnetic pen 100 of Fig. 1, wherein the same elements are denoted by the same reference numerals and have the same functions, and the description will not be repeated, and only the differences will be described below.

In this embodiment, the pressure sensing unit 230 of the electromagnetic pen 200 includes a magnetic sensing structure 232, a base 234, and an induction coil 236.

The base 234 is fixed in the housing unit 120. The magnetically sensitive structure 232 is movably disposed within the base 234. The magnetically sensitive structure 232 includes a receiving portion 232a, wherein the receiving portion 232a is a groove formed by hollowing out one side of the magnetically sensitive structure 232. The induction coil 236 is wound around the base 234.

In this configuration, the refill unit 140 is coupled to the magnetically sensitive structure 232 to move the magnetically sensitive structure 232 within the base 234. The magnetically sensitive structure 232 and the induction coil 236 generate a displacement variation, so that the induction coil has an inductance change. The circuit board generates an electromagnetic induction signal according to the change of the inductance.

Fig. 3 is a schematic view showing the electromagnetic pen of the third embodiment of the present invention. Please refer to Figure 3. The electromagnetic pen 300 of FIG. 3 is similar to the electromagnetic pen 200 of FIG. 2, wherein the same elements are denoted by the same reference numerals and have the same functions and will not be repeatedly described. Only the differences will be described below.

In this embodiment, the electromagnetic pen 300 further includes a conductive elastic structure 350. The conductive elastic structure 350 is disposed on the receiving portion 232a, and the conductive elastic structure 350 is used to fix the refill unit 140. With such a configuration, when the refill unit 140 is placed in the accommodating portion 232a, the reel unit 140 can be easily fixed in the accommodating portion 232a by the conductive elastic structure 350.

Fig. 4 is a schematic view showing the electromagnetic pen of the fourth embodiment of the present invention. Please refer to Figure 4. The electromagnetic pen 400 of FIG. 4 is similar to the electromagnetic pen 300 of FIG. 3, wherein the same elements are denoted by the same reference numerals and have the same functions and will not be repeatedly described. Only the differences will be described below.

In this embodiment, the base 434 in the pressure sensing unit 430 includes a first anti-rotation portion. 434a, the first anti-rotation portion 434a is located on the inner surface of the base 434. In the embodiment, the first anti-rotation portion 434a is a protruding structure.

The magnetically sensitive structure 432 in the pressure sensitive unit 430 includes a second anti-rotation portion 432a, and the second anti-rotation portion 432a is located on the outer surface of the magnetically sensitive structure 432. In the embodiment, the second anti-rotation portion 432a is a recess recessed on the outer surface of the magnetic sensitive structure 432. Of course, in an unillustrated embodiment, the first anti-rotation portion can also be a groove, and the second anti-rotation portion is a protruding structure that fits the groove, and the present invention is not limited thereto.

In this configuration, when the magnetically sensitive structure 432 is disposed in the base 434, the first anti-rotation portion 434a and the second anti-rotation portion 432a are engaged with each other, thereby not only preventing the magnetic-sensitive structure 432 from rotating in the base 432. Since the first end 142 of the refill unit 140 is located in the accommodating groove 232a, the user can be prevented from rotating the refill unit 140 via the outside, and has an anti-rotation mechanism.

Fig. 5 is a schematic view showing the electromagnetic pen of the fifth embodiment of the present invention. Please refer to Figure 5. The electromagnetic pen 500 of FIG. 5 is similar to the electromagnetic pen 400 of FIG. 4, wherein the same elements are denoted by the same reference numerals and have the same functions and will not be repeatedly described. Only the differences will be described below.

In this embodiment, the electromagnetic pen 500 further includes an elastic body 560, and the elastic body 560 is made of an elastomer material. The elastic body 560 is disposed in the base 434 , and the magnetic sensitive structure 432 is used to contact the elastic body 560 .

With such a configuration, when the refill unit 140 is touched, the magnetically sensitive structure 432 moves within the pedestal 434, and the magnetically sensitive structure 434 is used to contact the elastic body 560, and the elastic body 560 causes the magnetic urging structure 432 to rebound. And driving the refill unit 140 to reset.

Fig. 6 is a schematic view showing the electromagnetic pen of the sixth embodiment of the present invention. Please refer to Figure 6. The electromagnetic pen 600 of Fig. 6 is similar to the electromagnetic pen 500 of Fig. 5, in which the same elements are given the same standard The numbers indicate the same effect and are not repeated, and only the differences will be described below.

In this embodiment, the electromagnetic pen 600 further includes an elastic body 660 and a spring 670. The elastomer 660 is made of an elastomer material, and the spring 670 surrounds the elastomer 670.

With such a configuration, when the refill unit 140 is pressed, the refill unit 140 is moved along its axial direction, and the magnetic sensitive structure 432 presses the elastic body 670 and the spring 670 to deform the elastic body 670 and the spring 670. When the force of the touch-type refill unit 140 gradually disappears, the sexual body 670 and the spring 670 gradually return to the original state, and the elastic restoring force of the sexual body 670 and the spring 670 itself pushes the magnetic sensitive structure 432 and the refill unit 140 to be reset. To the initial position. In an unillustrated embodiment, the spring may be disposed between the elastic body and the magnetically sensitive structure, and the rebound reset effect may also be achieved.

In summary, in the electromagnetic pen of the present invention, the inside of the magnetic sensitive structure is hollowed out to form a receiving groove, so that the refill unit is directly placed in the receiving groove, so there is no need to separately set the refill seat, so The distance between the magnetic sensitive structure and the handwriting input device can be reduced, thereby improving the signal strength of the electromagnetic induction between the electromagnetic pen and the handwriting input device.

Furthermore, since the distance between the magnetic sensitive structure and the handwriting input device is reduced, the magnetic lines of force formed by the magnetic sensitive structure are less affected by the tilt of the electromagnetic pen, so that the position of the electromagnetic pen to be manipulated and the display of the handwriting input device can be reduced. The difference in the position of the indicator.

In addition, the refill unit is detachably placed in the accommodating portion, and is convenient for the user to disassemble and assemble, thereby improving the convenience of use.

Further, the first anti-rotation portion and the second anti-rotation portion are respectively disposed on the magnetically sensitive structure and the base, and the first anti-rotation portion and the second anti-rotation portion are mutually engaged, thereby not only avoiding the magnetically sensitive structure in the base The rotation prevents the user from rotating the refill unit externally, so that the electromagnetic pen of the embodiment has an anti-rotation mechanism.

In addition, when the force of the touch-type refill unit gradually disappears, the elastic body (and the spring) gradually returns to the original state, and the elastic body (and the spring) restores the magnetic-sensitive structure and the refill unit to the initial state by its own elastic restoring force. Position, thereby resetting the refill unit to the initial position.

The above descriptions are merely illustrative of the preferred embodiments or examples of the technical means employed to solve the problems, and are not intended to limit the scope of the invention. Any change or modification that is consistent with the scope of the patent application scope of this creation or the scope of the patent creation is covered by the scope of the creation patent.

600‧‧‧Electromagnetic pen

110‧‧‧Sheet unit

120‧‧‧Circuit unit

430‧‧‧Pressure unit

432‧‧‧Magnetic structure

232a‧‧‧Receiving Department

432a‧‧‧Second anti-rotation department

434‧‧‧Base

434a‧‧‧First Anti-rotation Department

236‧‧‧Induction coil

140‧‧‧Refill unit

142‧‧‧ first end

144‧‧‧ second end

350‧‧‧ Conductive shrapnel structure

660‧‧‧ Elastomers

670‧‧ ‧ spring

Claims (6)

An electromagnetic pen comprises: a housing unit; a circuit board unit disposed inside the housing unit; a pressure sensing unit disposed inside the housing unit, the circuit board unit being electrically coupled to the pressure sensing unit The pressure sensing unit includes a magnetically sensitive structure, the magnetic sensitive structure includes a receiving portion, and a core unit including opposite first ends and second ends, the refill unit being coupled to the pressure sensing unit, wherein the pen The first end of the core unit is detachably disposed in the receiving portion, and the second end of the refill unit is located outside the housing unit. The electromagnetic pen of claim 1, further comprising: a conductive elastic structure disposed on the receiving portion, and the conductive elastic structure is used for fixing the refill unit. The electromagnetic pen according to claim 1, wherein the pressure sensing unit comprises a base and an induction coil, and the magnetic sensitive structure is movably disposed in the base, and the induction coil is wound around the base. The electromagnetic pen according to claim 3, wherein the base comprises a first anti-rotation portion, the first anti-rotation portion is located on an inner surface of the base, and the magnetically sensitive structure comprises a second anti-rotation portion. The second anti-rotation portion is located on an outer surface of the magnetically sensitive structure. When the magnetically sensitive structure is disposed in the base, the first anti-rotation portion and the second anti-rotation portion are coupled to each other. The electromagnetic pen according to claim 3, further comprising: an elastic body disposed in the base, and the magnetic sensitive structure is configured to contact the elastic body. The electromagnetic pen according to claim 5, further comprising: a spring surrounding the elastic body.