CN205594600U - Active pressure sensitive capacitive stylus - Google Patents

Abstract

The utility model discloses an active pressure-sensitive electric capacity touch-control pen. The active pressure-sensitive capacitive touch pen comprises a shell unit, a pressure-sensitive detection unit, a pen core unit, a circuit board unit and a signal transmitting unit. The pressure sensing unit comprises a base, an induction coil and a magnetic structure, wherein the induction coil surrounds the base, and the magnetic structure is movably located in the base. The refill unit is linked with the pressure sensing unit. The circuit board unit is electrically coupled to the pressure sensing unit. The first end of the signal transmitting unit is electrically coupled to the circuit board unit, and the second end of the signal transmitting unit is electrically coupled to the pen core unit. The variable pressure-sensitive signal is transmitted to a touch panel through a signal transmitting unit.

Description

Active pressure sensitive capacitive stylus

technical field

The utility model relates to a touch pen, in particular to an active pressure-sensitive capacitive touch pen for controlling a touch panel.

Background technique

The capacitive touch panel is coated with a transparent metal electrode pattern on the surface of the substrate. When the finger approaches or touches the capacitive touch panel, the finger is a conductor and has static electricity, so the finger and the metal electrode pattern will be separated. A coupling capacitance is formed. At this time, the electrostatic capacitance of the electrode on the touch point of the capacitive touch panel will change, thereby causing the voltage or current of the electrode to change, and then comparing the voltage difference between adjacent electrodes, the touch point position can be calculated.

However, although the above method of using finger input is convenient, if it is necessary to draw lines of different thicknesses on the touch panel, or for touch recognition between fine positions, it is obviously difficult to meet the above requirements through finger input. . Therefore, in order to improve the accuracy of touch control, a technical solution of a stylus is proposed, wherein the active capacitive stylus transmits a driving signal, and the touch panel receives the driving signal emitted from the active capacitive stylus. And confirm the position of the tip of the active stylus according to the emission point of the driving signal, so as to achieve the purpose of touching the touch panel.

However, in order to accurately calculate the pressing force of the tip of the active capacitive stylus, more sophisticated calculation software is required to calculate, which is not only too complicated but also increases the overall cost of the active capacitive stylus.

Utility model content

The utility model provides an active pressure-sensitive capacitive stylus, which transmits a variable pressure-sensitive signal to a touch panel through a signal-emitting unit, so that the touch panel can display the track of the touch screen according to the size of the pressure-sensitive signal thickness.

The utility model discloses an active pressure-sensitive capacitive stylus. The active pressure-sensitive capacitive stylus comprises a shell unit, a pressure-sensitive detection unit, a pen core unit, a circuit board unit and a transmitting signal. unit. The pressure sensing unit is arranged inside the shell unit. The pressure sensing unit includes a base, an induction coil and a magnetic structure. The induction coil surrounds the base, and the magnetic structure is movably located in the base. The refill unit is detachably arranged on the casing unit, and one end of the refill unit is located outside the casing unit, and the refill unit is linked to the pressure sensing unit. The circuit board unit is arranged inside the housing unit, and the circuit board unit is electrically coupled to the pressure sensing unit. The transmitting signal unit is arranged inside the housing unit. The transmitting signal unit is connected in series with the induction coil to generate a variable pressure-sensitive signal, wherein the transmitting signal unit has a first end and a second end, the first end of the transmitting signal unit is electrically coupled to the circuit board unit, and the transmitting signal unit The second end of the signal unit is electrically coupled to the pen core unit, and the variable pressure-sensitive signal is transmitted to a touch panel through the signal transmitting unit.

In an embodiment of the present invention, the pressure sensing unit includes a conductive spring, the conductive spring surrounds the base, and the conductive spring is coupled to the transmitting signal unit.

In one embodiment of the present utility model, the pressure sensing unit includes a conductive refill holder and a conductive shrapnel structure, the conductive refill holder is connected to the base, and the shrapnel structure is arranged in the conductive refill holder , and the refill unit is used to resist the conductive shrapnel structure.

In an embodiment of the present invention, the active pressure sensitive capacitive stylus also includes:

A supercapacitor is arranged inside the housing unit, and the supercapacitor is electrically coupled to the circuit board unit.

In one embodiment of the present invention, the circuit board unit includes a first welding part, a second welding part and a connecting part, and the first welding part and the second welding part are respectively connected to the pressure sensor unit, the second welding part is connected to the connecting part, and the connecting part is connected to the first end of the transmitting signal unit.

In an embodiment of the present invention, the circuit board unit includes a first charging contact and a second charging contact, and the first charging contact and the second charging contact respectively protrude from the housing unit.

In an embodiment of the present invention, the first charging contact and the second charging contact are respectively located on a side of the casing unit away from the pen core unit.

In an embodiment of the present invention, the active pressure sensitive capacitive stylus also includes:

A buffer part is arranged in the base, and the magnetic structure is used to contact the buffer part.

In an embodiment of the present invention, the refill unit includes a nib portion and a writing portion, and the nib portion is linked to the magnetic structure.

In an embodiment of the present invention, the active pressure sensitive capacitive stylus also includes:

An insulating part is arranged in the base, and the insulating part is located between the pen core unit and the magnetic structure.

Based on the above, in the active pressure sensitive capacitive stylus provided by the present invention. The transmitting signal unit is connected in series with the induction coil to generate a variable pressure-sensitive signal, and the variable pressure-sensitive signal is transmitted to a touch panel through the transmitting signal unit. In this way, according to the change of the pressure-sensing signal, the touch panel can receive the pressure value information corresponding to the pen core unit being pressed, so as to determine the pressure exerted by the pen core unit on the touch panel. Therefore, when the touch panel displays the touch track according to the pressure-sensitive signal, the thickness of the touch-screen track can be displayed according to the change of the pressure-sensitive signal, so as to improve the usability of the active pressure-sensitive capacitive stylus.

Description of drawings

1 is a schematic diagram of an active pressure-sensitive capacitive stylus according to an embodiment of the present invention;

FIG. 2 is a partially enlarged view of the active pressure-sensitive capacitive stylus shown in FIG. 1;

FIG. 3 is a partially enlarged view of the active piezo-capacitive stylus shown in FIG. 2 in a process of use;

Fig. 4 is a partial schematic diagram of an active pressure-sensitive capacitive stylus according to another embodiment of the present invention;

FIG. 5 is a partial schematic diagram of an active pressure-sensitive capacitive stylus in another embodiment of the present invention;

FIG. 6 is a schematic diagram of an active pressure-sensitive capacitive stylus according to yet another embodiment of the present invention.

Explanation of reference signs: 100, 200, 300, 400-active pressure-sensitive capacitive stylus; 110-housing unit; 112-key unit; 120-refill unit; 122-writing part; 124-pen tip; 130 -Pressure detection unit; 131-conductive pen holder; 131a-second storage tank; 132-base; 132a-first storage tank; 134-magnetic structure; 136-buffer; 136a-elastic body; 136b-spring; 137-induction coil; 138-conductive spring; 139-conductive shrapnel structure; 140, 240-circuit board unit; 142a-first welding part; 142b-second welding part; 144-connection part; 1 wire; 146b-second wire; 148a-first charging contact; 148b-second charging contact; 150-transmission signal unit; 152-first end; 154-second end; 160-fixing unit; 170-insulation ; 180 - supercapacitor.

detailed description

In the following, the specific implementation of the present utility model will be further described in conjunction with the accompanying drawings and examples. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.

FIG. 1 is a schematic diagram of an active piezo-capacitance stylus according to an embodiment of the present invention. FIG. 2 is a partially enlarged view of the active pressure-sensitive capacitive stylus shown in FIG. 1 . FIG. 3 is a partially enlarged view of the active piezo-capacitive stylus shown in FIG. 2 in a process of use. Please refer to Figure 1 first.

In this embodiment, the active pressure-sensitive capacitive stylus 100 is used for inputting with a touch panel (not shown in the figure), so that it can be used as an input element of the touch panel. The touch panel can be a capacitive touch panel, but the present invention is not limited thereto.

The active pressure-sensitive capacitive stylus 100 includes a housing unit 110, a button unit 112, a core unit 120, a pressure-sensitive detection unit 130, a circuit board unit 140, a transmitting signal unit 150 and a fixing unit 160.

The appearance shape of the housing unit 110 is, for example, an ellipse. There is an accommodating space inside the casing unit 110, and the pressure sensing unit 130, the circuit board unit 140, the transmitting signal unit 150, the fixing unit 160 and some pen core units 120 can be installed in the accommodating space of the casing unit 110 Inside. 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 according to the actual product.

The refill unit 120 is detachably disposed on the casing unit 110 , and one end of the refill unit 120 is located outside the casing unit 110 , and the refill unit 120 can be removed and replaced according to actual damage conditions.

In detail, the refill unit 120 includes a writing part 122 and a nib part 124 . The writing part 122 can be made of a non-conductive material or a soft material, the nib part 124 is made of a conductor, and part of the outer surface of the writing part 122 is covered by the nib part 124 . In this way, one end of the writing portion 122 not covered by the tip portion 124 is located outside the casing unit 110 and can be used as a touch panel corresponding to writing touch, and the tip portion 124 is used for transmitting pressure-sensitive signals.

The refill unit 120 is linked to the pressure sensing unit 130 . The pressure sensing unit 130 is disposed inside the casing unit 110 .

The fixing unit 160 is disposed in the casing unit 110 , and the fixing unit 160 is connected to the pressure sensing unit 130 and used for fixing the pressure sensing unit 130 . In this embodiment, the fixing unit 160 is not limited to any mechanism, as long as it is a component capable of fixing the pressure sensing unit 130 . In other embodiments, the pressure sensing unit can also be directly fixed to the housing unit.

As shown in FIG. 2 , the pressure sensing unit 130 includes a base 132, a magnetic structure 134, a buffer portion 136, and an induction coil 137, wherein the pen tip 124 of the refill unit 120 is linked to the magnetic structure 134, and the magnetic The structure 134 is movably located on the base 132 , the buffer portion 136 is disposed inside the base 132 , and the induction coil 137 surrounds the base 132 .

Specifically, a first accommodating groove 132a is formed in the base 132, the buffer portion 136 is disposed in the bottom wall of the first accommodating groove 132a, and the magnetic structure 134 is movably located in the first accommodating groove 132a of the base 132. Inside.

In this embodiment, the magnetic structure 134 includes a magnetically sensitive material such as iron powder core, ferromagnetic material or ferrite, and the buffer portion 136 is made of elastic material. In one implementation, the buffer portion 136 is Made of elastomer material. Under such arrangement, the magnetic structure 134 moves in the first receiving groove 132a, and the magnetic structure 134 is used to contact the buffer portion 136, and the buffer portion 136 can make the magnetic structure 134 rebound and return to its original position. In addition, the present embodiment does not limit the shapes of the magnetic structure and the buffer portion, and the magnetic structure and the buffer portion can be designed with matching shapes according to the shape of the actual accommodating groove.

As shown in FIG. 1 , the transmitting signal unit 150 is disposed inside the casing unit 110 .

The transmitting signal unit 150 has a first end 152 and a second end 154, the first end 152 of the transmitting signal unit 150 is electrically coupled to the circuit board unit 140, and the second end 154 of the transmitting signal unit 150 is electrically coupled to the The refill unit 120, and the refill unit 120 sends out the signal transmitted by the transmitting signal unit 150.

The circuit board unit 140 is disposed inside the housing unit 110 , and the circuit board unit 140 is electrically coupled to the pressure sensing unit 130 .

Specifically, the circuit board unit 140 includes a first soldering portion 142a, a second soldering portion 142b, a connecting portion 144, a first wire 146a, and a second wire 146b.

The first welding part 142a is connected to the induction coil 137 of the pressure sensing unit 130 through the first wire 146a, and the second welding part 142b is connected to the induction coil 137 of the pressure sensing unit 130 through the second wire 146b. 142b is connected to the connecting portion 144, and the connecting portion 144 is connected to the first end 152 of the transmitting signal unit 150. In other words, the transmitting signal unit 150 is connected in series with the induction coil 137 to generate a pressure-sensitive signal. In this embodiment, the connecting portion 144 is made of metal for transmitting the pressure-sensitive signal to the transmitting signal unit 150 , and the transmitting signal unit 150 is a metal conductor for transmitting the pressure-sensitive signal.

Under the above configuration, the variable pressure-sensing signal is transmitted through the transmitting signal unit 150 , and the variable pressure-sensing signal is transmitted to a touch panel through the pen tip 124 of the pen core unit 120 .

In an application example, the writing part 122 of the refill unit 120 is used to contact the touch panel. When the refill unit 120 is suspended on the touch panel, that is, the writing part 122 does not touch the touch panel, the refill unit 120 and the touch panel The magnetic structure 134 is in an initial position (as shown in FIG. 2 ), and the variable pressure-sensitive signal changes with the distance between the pen core unit 120 and the touch panel, and, according to the change in the size of the variable pressure-sensitive signal, The touch panel can receive and display the movement track of the active pressure sensitive capacitive stylus 100 on the touch screen.

In another embodiment, when the writing part 122 of the refill unit 120 is pressed, the refill unit 120 is moved along its axial direction, and the nib part 124 in the refill unit 120 drives the magnetic structure 134 by The initial position shown in FIG. 2 moves, and at the same time, the magnetic structure 134 presses the buffer portion 136 to cause deformation of the buffer portion 136 , a pressed position as shown in FIG. 3 .

Specifically, when the nib portion 124 of the refill unit 120 drives the magnetic structure 134, the magnetic structure 134 produces a displacement change relative to the induction coil 137, so that the induction coil 137 of the pressure detection unit 130 has an inductance change, The circuit board unit 140 generates a frequency according to the change in inductance, and the transmitting signal unit 150 receives the frequency and transmits a corresponding pressure-sensitive signal to the touch panel through high-voltage conduction.

In this way, according to the magnitude of the frequency, the touch panel can receive the pressure value information corresponding to the pressure of the refill unit 120 to determine the magnitude of the pressure exerted by the refill unit 120 on the touch panel. Therefore, when the touch panel displays the touch track according to the frequency, the thickness of the track on the touch screen can be displayed according to the variation of the frequency.

In addition, when the force of pressing the refill unit 120 gradually disappears, the buffer portion 136 will gradually return to its original shape, and the buffer portion 136 pushes the magnetic structure 134 back to the initial position shown in FIG. 2 through its own elastic restoring force.

In this embodiment, the button unit 112 is located outside the casing unit 110 , and the button unit 112 is electrically connected to the circuit board unit 140 . When the user presses the button unit 112, the circuit board unit 115 generates the frequency corresponding to the button function according to the inductance value obtained by the capacitance value (fixed value constant) and the inductance change amount, and the transmitting signal unit 150 receives the frequency and conducts it through a high voltage The corresponding frequency is transmitted to the touch panel in a manner, so that the touch panel can determine the signal of each function key in the key unit 112 .

FIG. 4 is a partial schematic diagram of an active piezo-capacitance stylus according to another embodiment of the present invention. As shown in Figure 4. The active piezo capacitive stylus 200 in FIG. 4 is similar to the active piezo capacitive stylus 100 in FIGS. 1 to 3 , wherein the same components are denoted by the same reference numerals and have the same functions and will not be repeated. Instructions, only the differences are described below.

In this embodiment, the buffer portion includes an elastic body 136a and a spring 136b, and the spring 136b surrounds the elastic body 136a. The elastic body 136a is made of elastic material. In one implementation, the elastic body 136a is made of elastic material. In this way, when the writing part 122 of the refill unit 120 is pressed, the refill unit 120 is moved along its axial direction, and the magnetic structure 134 squeezes the elastic body 136a and the spring 136b, so that the elastic body 136a and the spring 136b Deformation occurs, when the force of pressing the refill unit 120 gradually disappears, the elastic body 136a and the spring 136b will gradually return to their original shape, and the magnetic structure 134 is pushed back to the original position by the elastic restoring force of the elastic body 136a and the spring 136b itself. In an unillustrated embodiment, a spring can also be arranged between the elastic body and the magnetic structure, so as to achieve the above-mentioned effect of rebounding and returning.

FIG. 5 is a partial schematic diagram of an active piezo-capacitance stylus according to another embodiment of the present invention. As shown in Figure 5. The active piezo capacitive stylus 300 in FIG. 5 is similar to the active piezo capacitive stylus 100, 200 in FIGS. To repeat the description, only the differences will be described below.

In this embodiment, the active pressure-sensitive capacitive stylus 300 further includes an insulating portion 170 , and the pressure-sensitive detection unit 130 includes a conductive refill holder 131 , a conductive spring 138 and a conductive spring structure 139 .

The conductive refill holder 131 is connected to the base 132 , the insulating part 170 is disposed in the base 132 , and the insulator 170 is located between the conductive refill holder 131 and the magnetic structure 134 .

The conductive elastic structure 139 is disposed in the second accommodating groove 131 a of the conductive refill holder 131 , and the pen tip 124 of the refill unit 120 is used to resist the conductive elastic structure 139 . In this way, when the refill unit 120 is placed in the second accommodating groove 131a, the conductive elastic sheet structure 139 can facilitate fixing the refill unit 120 in the second accommodating groove 131a.

In addition, the conductive elastic structure 139 can not only fix the refill unit 120 , but also serve as an intermediary between the transmitting signal unit 150 and the refill unit 120 .

The conductive spring 138 surrounds the base 132 , the conductive spring 138 is adjacent to the refill unit 120 , and the conductive spring 138 is coupled to the second end 154 of the transmitting signal unit 150 . In this way, the corresponding frequency emitted by the transmitting signal unit 150 can be transmitted to the refill unit 120 through the conductive spring 138 and the conductive shrapnel structure 139 , and then the corresponding frequency is transmitted to the touch panel through the tip 124 of the refill unit 120 .

It should be noted that the above-mentioned active pressure sensitive capacitive stylus 100 , 200 , 300 can use a storage battery or a rechargeable battery as a power supply.

FIG. 6 is a schematic diagram of an active pressure-sensitive capacitive stylus according to yet another embodiment of the present invention. As shown in Figure 6. The active pressure sensitive capacitive stylus 400 in FIG. 6 is similar to the active pressure sensitive capacitive stylus 100, 200, 300 in FIGS. Instead of repeating the description, only the differences will be described below.

In this embodiment, the active pressure sensitive capacitive stylus 400 further includes a super capacitor (Super-Capacitor) 180 . In other words, the difference between the active pressure-sensitive capacitive stylus 400 of this embodiment and the active pressure-sensitive capacitive stylus 100, 200, and 300 in FIGS. The capacitive stylus 400 uses the supercapacitor 180 as a power supply to provide the required power for the active pressure-sensitive capacitive stylus 400 .

The supercapacitor 180 is disposed inside the casing unit 110 , and the supercapacitor 180 is electrically coupled to the circuit board unit 240 . Under this configuration, since the supercapacitor 180 has the characteristics of small size and light weight, the internal configuration space of the active piezo-sensitive capacitive stylus 400 can be reduced to reduce the volume of the overall active piezo-sensitive capacitive stylus 400 , and reduce the weight of the active pressure sensitive capacitive stylus 400 .

In this embodiment, the circuit board unit 240 includes a first charging contact 148a, a second charging contact 148b, and a charging circuit (not shown). The first charging contact 148a and the second charging contact 148b protrude from the casing respectively. Unit 110 outside. Therefore, the first charging contact 148a and the second charging contact 148b are connected to an external power source to obtain the required charging power.

For example, when the active pressure-sensitive capacitive stylus 400 of this embodiment is stored in an electronic device (such as a tablet computer), the first charging contact 148a and the second charging contact 148b of the active pressure-sensitive capacitive stylus 400 are used for The charging contacts of the electronic device are electrically connected with each other, so that the electronic device can obtain the required charging power from an external power source. The charging circuit inside the active piezo capacitive stylus 400 is electrically connected to the first charging contact 148a and the second charging contact 148b, so as to transmit the electric energy for charging to the supercapacitor of the active piezo capacitive stylus 400 180.

Because the supercapacitor 180 has the characteristics of large capacitance, stable discharge with high output power density, no memory effect, no leakage, and hundreds of thousands of charging and discharging times, etc., and other fast charging and discharging characteristics. Therefore, replacing the battery with the supercapacitor 180 does not need to be replaced separately. In addition to reducing the maintenance cost, it has fast charging and discharging characteristics and a long service life, so as to improve the convenience of the active pressure-sensitive capacitive stylus 400 .

Furthermore, the first charging contact 148a and the second charging contact 148b of this embodiment are respectively located on the side of the shell unit 110 away from the pen core unit 120, so as to avoid the user's grip, so that the grip of the pen can be improved. Stability and comfort when writing.

To sum up, in the active pressure-sensitive capacitive stylus provided by the utility model, the transmitting signal unit is connected in series with the induction coil to generate a variable pressure-sensitive signal, and the variable pressure-sensitive signal is transmitted through the transmitting signal unit. signal to a touch panel. In this way, the touch panel can receive and display the moving track of the active pressure-sensitive capacitive stylus on the touch screen according to the change of the pressure-sensitive signal.

In addition, one end of the refill unit is used to contact the touch panel, and when the refill unit is pressed, the refill unit drives the magnetic structure, and the magnetic structure generates a displacement relative to the induction coil, so that the pressure-sensitive detection unit has A change in inductance, the circuit board unit generates a frequency according to the change in inductance, and the transmitting signal unit receives the frequency and transmits the corresponding frequency to the touch panel. It can be seen from this that there is no need for other additional calculation software to calculate the pressure value of the refill unit. The active capacitive stylus can receive the corresponding pressure value information of the refill unit according to the size of the frequency. , to judge the pressure applied by the refill unit on the touch panel. Therefore, when the touch panel displays the touch track according to the frequency, the thickness of the track on the touch screen can be displayed according to the variation of the frequency, so as to improve the convenience of use of the active capacitive stylus.

In addition, when the force of pressing the contact part of the refill unit gradually disappears, the buffer part will gradually return to its original shape, and the buffer part will push the magnetic structure back to the original position through its own elastic restoring force, so that the refill unit will return to the original state s position.

In addition, when the user presses the button unit, the circuit board unit receives the frequency based on the capacitance value (fixed value constant) and the inductance change value obtained by the circuit board unit, and transmits the corresponding frequency to the touch panel through high-voltage conduction. In order to allow the touch panel to determine the signal of each function key in the key unit.

Further, in one embodiment, replacing the battery type with a super capacitor can reduce the internal configuration space of the active pressure-sensitive capacitive stylus, which can not only reduce the volume of the overall active pressure-sensitive capacitive stylus, but also reduce the In addition to the weight of the piezo capacitive stylus, it is more convenient for users to carry.

In addition, replacing the battery with a supercapacitor does not need to be replaced separately. In addition to reducing maintenance costs, the first charging contact and the second charging contact are connected to an external power supply, so that the required charging power can be obtained through the external power supply. The charged power is transmitted to the supercapacitor of the active piezocapacitive stylus, so the supercapacitor has fast charge and discharge and long service life, which can improve the convenience of the active piezocapacitive stylus.

In addition, the utility model adjusts the setting positions of the first charging contact and the second charging contact to avoid the place where the user holds the pen, so that the user's stability and comfort when holding the pen for writing can be improved.

The above descriptions only describe the preferred implementation or examples of the technical means adopted by the present invention to solve the problems, and are not intended to limit the implementation scope of the present invention. That is, all equivalent changes and modifications that are consistent with the scope of the claims of the present invention, or made in accordance with the scope of the claims of the present invention, are covered by the protection scope of the present invention.

Claims (10)

1. An active pressure sensitive capacitive stylus, comprising: a housing unit; A pressure-sensitive detection unit is arranged inside the housing unit, the pressure-sensitive detection unit includes a base, an induction coil and a magnetic structure, the induction coil surrounds the base, and the magnetic structure is movably located within the base; A refill unit is detachably arranged on the housing unit, and one end of the refill unit is located outside the housing unit, and the refill unit is linked to the pressure sensing unit; A circuit board unit is arranged inside the casing unit, and the circuit board unit is electrically coupled to the pressure sensing unit; and A transmitting signal unit is arranged inside the housing unit, the transmitting signal unit is connected in series with the induction coil to generate a variable pressure-sensitive signal, wherein the transmitting signal unit has a first end and a second end, the The first end of the transmitting signal unit is electrically coupled to the circuit board unit, the second end of the transmitting signal unit is electrically coupled to the pen core unit, and the variable pressure-sensitive signal is transmitted through the transmitting signal unit to a touch panel. 2. The active pressure-sensitive capacitive stylus according to claim 1, wherein the pressure-sensitive detection unit comprises a conductive spring, the conductive spring surrounds the base, and the conductive spring is coupled to The transmit signal unit. 3. The active pressure-sensitive capacitive stylus according to claim 1, wherein the pressure-sensitive detection unit comprises a conductive lead holder and a conductive shrapnel structure, and the conductive lead holder is connected to the base , the shrapnel structure is disposed in the conductive refill holder, and the refill unit is used to resist the conductive shrapnel structure. 4. The active pressure sensitive capacitive stylus according to claim 1, further comprising: A supercapacitor is arranged inside the housing unit, and the supercapacitor is electrically coupled to the circuit board unit. 5. The active piezo capacitive stylus according to claim 1, wherein the circuit board unit comprises a first welding part, a second welding part and a connecting part, the first welding part and the The second welding part is respectively connected to the pressure sensing unit, the second welding part is connected to the connecting part, and the connecting part is connected to the first end of the transmitting signal unit. 6. The active piezo capacitive stylus according to claim 1, wherein the circuit board unit includes a first charging contact and a second charging contact, the first charging contact and the second charging contact respectively protruding from the housing unit. 7 . The active piezo capacitive stylus according to claim 6 , wherein the first charging contact and the second charging contact are respectively located on a side of the housing unit away from the refill unit. 8 . 8. The active pressure sensitive capacitive stylus according to claim 1, further comprising: A buffer part is arranged in the base, and the magnetic structure is used to contact the buffer part. 9 . The active piezo capacitive stylus according to claim 1 , wherein the refill unit includes a tip and a writing part, and the tip is linked to the magnetic structure. 10. The active pressure sensitive capacitive stylus according to claim 1, further comprising: An insulating part is arranged in the base, and the insulating part is located between the pen core unit and the magnetic structure.