WO2020029129A1 - 手写输入装置及其触控笔 - Google Patents

手写输入装置及其触控笔 Download PDF

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Publication number
WO2020029129A1
WO2020029129A1 PCT/CN2018/099448 CN2018099448W WO2020029129A1 WO 2020029129 A1 WO2020029129 A1 WO 2020029129A1 CN 2018099448 W CN2018099448 W CN 2018099448W WO 2020029129 A1 WO2020029129 A1 WO 2020029129A1
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WO
WIPO (PCT)
Prior art keywords
pen
pressure sensor
stylus
main board
pressure
Prior art date
Application number
PCT/CN2018/099448
Other languages
English (en)
French (fr)
Inventor
杨必华
陈臻伟
Original Assignee
深圳市柔宇科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to CN201880094181.5A priority Critical patent/CN112639694A/zh
Priority to PCT/CN2018/099448 priority patent/WO2020029129A1/zh
Publication of WO2020029129A1 publication Critical patent/WO2020029129A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks

Definitions

  • the present application relates to the technical field of handwriting input, and in particular, to a stylus and a handwriting input device provided with the stylus.
  • the existing stylus generally includes a pen barrel, a pen core disposed in the pen barrel, and a pressure sensor disposed in the pen barrel along an axial direction of the pen core, and the pressure sensor is used to detect the pen core.
  • the display setting can restore the writing handwriting of the refill.
  • the pressure sensor of the existing stylus pen is located in the axial direction of the pen core, if the angle between the tip of the pen core and the input surface of the tablet is small when the stylus pen is written, That is, there is less pressure in the axial direction of the refill, and it is difficult for the pressure sensor to detect the writing pressure value of the stylus, so the tablet cannot obtain the pressure value information of the pressure sensor. , The external display settings can not restore the writing handwriting.
  • the present application provides a stylus capable of improving the handwriting restoration effect, and a handwriting input device provided with the stylus.
  • a stylus pen described in this application includes a pen barrel, a pen core disposed in the pen barrel, a first pressure sensor disposed along an axial direction of the pen core, a main board and a power source, the power source and the first A pressure sensor is electrically connected to the motherboard.
  • a second pressure sensor is disposed in a radial direction at a pen tip of the refill, the second pressure sensor is electrically connected to the main board, and the first pressure sensor is used to detect an axial direction of the refill
  • the second pressure sensor is configured to detect the pressure value in the radial direction of the refill and send a signal to the main board.
  • the present application also provides a handwriting input device including a handwriting tablet and a stylus pen.
  • the stylus pen includes a pen barrel, a pen core disposed in the pen barrel, and a first pressure set in an axial direction of the pen core.
  • the sensor, the main board, and the power supply are electrically connected to the main board.
  • a second pressure sensor is disposed in a radial direction at a pen tip of the refill, the second pressure sensor is electrically connected to the main board, and the first pressure sensor is used to detect an axial direction of the refill.
  • the second pressure sensor is used to detect the pressure value in the radial direction of the pen core and send a signal to the main board, and the handwriting board is used to sense the Pressure information of a pressure value detected by the first pressure sensor and the second pressure sensor of the stylus pen, and transmitting the pressure information to an external device.
  • the first pressure sensor of the handwriting input device of the present application can detect the pressure value in the axial direction of the pen core, and the second pressure sensor can detect the pressure value in the radial direction of the pen core. Therefore, the tablet can accurately The axial or / and radial pressure information of the pen core is obtained, so that the writing handwriting of the pen core can be restored on an external device, and the handwriting restoration effect of the stylus pen is improved.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a stylus pen in one embodiment of the present application.
  • FIG. 2 is an exploded view of the three-dimensional structure of the stylus pen of FIG. 1.
  • FIG. 3 is a schematic partial cross-sectional structure view of the stylus pen in FIG. 1.
  • FIG. 4 is a working principle diagram of the stylus pen of FIG. 1.
  • FIG. 5 is a waveform diagram of transmission of a pressure signal of the stylus pen of FIG. 1.
  • FIG. 6 is a schematic structural diagram of a handwriting input device according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of the three-dimensional structure of the stylus pen in one embodiment of the present application
  • FIG. 2 is an exploded schematic diagram of the three-dimensional structure of FIG. 1
  • the stylus pen 100 in one embodiment of the present application includes a pen barrel 20, a refill 40 disposed in the pen barrel 20, a first pressure sensor 50 disposed along an axial direction of the refill 40, and A second pressure sensor 60, a main board 70 and a battery 80 in a radial direction at the pen tip of the refill 40.
  • the first pressure sensor 50 and the second pressure sensor 60 are both electrically connected to the main board 70.
  • the first pressure sensor 50 is configured to detect a pressure value in the axial direction of the refill 40 and send a signal.
  • the second pressure sensor 60 is configured to detect a pressure value in the radial direction of the refill 40 and send a signal to the main board 70.
  • the main board 70 receives the first pressure sensor 50 and the second pressure sensor 60 for processing and controls the stylus 100 to transmit signals to the tablet, and the handwriting board obtains the transmission signals of the stylus 100 and transmits signals.
  • the external device may be a display device or the like. After receiving the signal transmitted by the stylus pen 100, the external device displays the handwriting corresponding to the stylus pen 100 on the display device through an APP on the external device, that is, The writing handwriting of the stylus is restored.
  • the refill 40 is a pencil lead
  • the power source 80 is a dry battery
  • the refill 40 may also be a neutral pen refill, a pen refill, or the like.
  • the first pressure sensor 50 of the stylus pen 100 provided in the present application can detect the pressure value in the axial direction of the pen core 40 and send a signal to the main board 70, and the second pressure sensor 60 can detect the pressure The pressure value in the radial direction of the pen tip portion 42 sends a signal to the main board 70.
  • the main board 70 receives signals sent by the first pressure sensor 50 and the second pressure sensor 60 and processes the received signals and controls the stylus pen 100 to transmit signals to the tablet, wherein the stylus pen
  • the signal sent by 100 to the tablet includes pressure values of the first pressure sensor 50 and the second pressure sensor 60.
  • the tablet obtains the pressure value information of the first pressure sensor 50 and the second pressure sensor 60 and transmits it to an external device, so that the handwriting corresponding to the refill 40 is displayed on the external device. Therefore, when writing with the stylus pen 100 on the tablet, it does not matter how many degrees the angle between the stylus pen 100 and the writing surface of the stylus board is, that is, regardless of whether the stylus pen 100 is writing It is a pendant or inclined input surface of the tablet.
  • the pressure sensor of the stylus pen 100 can detect the pressure value of the pen tip portion 42.
  • the first pressure sensor 50 and the second pressure sensor 60 can detect the pressure values in the axial direction and the radial direction of the refill 40, respectively. Therefore, the tablet can accurately obtain the pressure of the refill 40. Information, so that the writing handwriting of the refill 40 can be accurately restored on an external device, and the handwriting restoration effect of the stylus pen is improved.
  • the pen holder 20 includes a pen head frame 22 and a pen body frame 24 connected to the trailing end of the pen head frame 22. to make.
  • the pen barrel 20 has a function of shielding the signal of the stylus pen 100 to prevent the signal of the stylus pen 100 from being disturbed, so that the signal of the stylus pen 100 can be stably from the pen tip of the refill 40. To the tablet.
  • the pen frame 22 and the pen frame 24 are made of a metal material, and the pen frame 22 and the pen frame 24 are electrically connected to a ground terminal of the main board 70. The function of shielding the signal of the stylus pen 100 is actually displayed.
  • the pen frame 22 is a hollow circular truncated tube body, and the pen tip of the pen core 40 can be received in the pen frame 22.
  • the pen body frame 24 is a semi-circular pipe body. A middle part of the pen body frame 24 is axially provided with a receiving groove 242.
  • the receiving groove 242 is used to install the pen core 40 and the main board 70.
  • power supply 80 Specifically, a pen core positioning portion 244 for positioning the refill 40 is provided in the receiving groove 242 of the pen body frame 24 at an end adjacent to the pen head frame 22, and the receiving groove 242 is far away from the receiving groove 242.
  • the refill positioning portion 244 is a support bar protruding from the inner surface of the receiving groove 242.
  • the supporting bar extends along the length direction of the receiving groove 242.
  • the support bar faces away from the receiving groove 242.
  • a positioning groove 2442 is defined on a side surface of the inner surface, and the positioning groove 2442 extends along an axial direction of the pen frame 24.
  • the power source positioning portion 246 is a positioning piece 2462 disposed in the receiving slot 242, and the positioning piece 2462 divides the receiving slot 242 into a power receiving space 2464.
  • the main board positioning portion 247 is a plurality of connecting rods 2472 protruding in the receiving groove 242. Each connecting rod 2472 extends in a radial direction of the pen frame 24, and each connecting rod 2472 is axially provided with one Connection hole 2474.
  • a pen tip 42 is disposed at the pen tip of the refill 40, and the second pressure sensor 60 is disposed in a radial direction of the pen tip portion 42. Specifically, the second pressure sensor 60 is disposed at the pen tip portion. 42 on the outer side of the perimeter.
  • the pen tip portion 42 is a conductive block made of a conductive material provided at the pen tip of the pen core 40.
  • the conductive block is a metal sleeved on the pen core 40.
  • the pen tip portion 42 has a circular truncated shape, and the pen tip portion 42 can be accommodated in the pen tip frame 22, that is, the outer side surface of the pen tip portion 42 and the inner side surface of the pen tip frame 22 can be attached.
  • the pen tip portion 42 includes a front end surface 422, a rear end surface 424 corresponding to the front end surface 422, and an outer side surface 426 connected between the periphery of the front end surface 422 and the periphery of the rear end surface 424.
  • the pen tip of the refill 40 passes through the center of the rear end surface 424 of the pen tip portion 42 and the center of the front end surface 422 of the pen tip portion 42 along the axial direction of the stylus pen 100.
  • the pen tip portion 42 is provided with a lead wire 428 for electrically connecting to the main board 70.
  • the second pressure sensor 60 is disposed on the outer side surface 426 of the pen tip portion 42. Specifically, the second pressure sensor 60 is a thin film pressure sensor that can surround the outer side surface 426 of the pen tip portion 42.
  • the second pressure sensor 60 has a hollow circular truncated cone shape.
  • a conductive sheet 62 is provided on the second pressure sensor 60, and the conductive sheet 62 can be electrically connected to the main board 70.
  • the conductive sheet 62 is used for transmitting the pressure value detected by the second pressure sensor 60.
  • the conductive sheet 62 includes a first connection end 623 connected to the second pressure sensor 60, and a second end 625 connectable to the main board 70.
  • the pen tip portion 42 may be a conductive block having a conical shape or a cylindrical shape
  • the second pressure sensor 60 may be a conical shape or a cylindrical shape matching the outer side of the conductive block.
  • Other shapes of membrane pressure sensors may be used.
  • the motherboard 70 is provided with a micro control unit 72, a DC conversion circuit 75 and a switching DC boost circuit 76.
  • the first pressure sensor 50 is disposed on an end of the main board 70 adjacent to the refill 40.
  • the DC conversion circuit 75, the switching DC boost circuit 76, the first pressure sensor 50 and the second pressure sensor 60 are all electrically connected to the micro control unit 72.
  • the power source 80 is electrically connected to the motherboard 70. Specifically, the power source 80 is connected to the micro control unit 72 through the DC conversion circuit 75.
  • the pen tip portion 42 is electrically connected to the main board 70 through the wire 428. Specifically, the pen tip portion 42 is connected to the micro control unit 72 through a switch DC boost circuit 76 on the main board 70.
  • the DC conversion circuit 75 is also electrically connected to the switching DC boost circuit 76.
  • the DC conversion circuit 75 is configured to boost the output voltage of the power source 80 to a voltage required for the micro-control unit 72 to work normally, and send the voltage to the switching DC boost circuit 76.
  • the switching DC boost circuit 76 is used to boost the voltage delivered by the DC conversion circuit 75 to a voltage at which the pen tip portion 42 can transmit signals and transmit the signal to the writing board.
  • the first pressure sensor 50 and the second pressure sensor 60 are respectively configured to detect the pressure value in the axial direction or the radial direction of the pen head 42 and respectively send signals to the micro control unit 72.
  • the micro control unit 72 receives the signal and controls the switching DC boost circuit 76 to output a signal corresponding to the received signal after receiving the signal.
  • the stylus pen 100 further includes an outer tube 27 and a battery cover 28.
  • the outer tube 27 is a hollow cylinder, and the battery cover 28 is used for positioning the power source 80.
  • the stylus pen 100 When assembling the stylus pen 100, firstly set the second pressure sensor 60 on the outer side surface 426 of the pen tip portion 42 so that the second pressure sensor 60
  • the second pressure sensor 60 is attached to the outer side surface 426 of the pen tip portion 42, that is, the second pressure sensor 60 is located in a radial position of the pen core 40; the pen tip portion 42 and the second pressure sensor 60 are inserted into the pen tip.
  • the second pressure sensor 60 is sandwiched between an outer surface 246 of the pen tip portion 42 and an inner surface of the pen frame 22.
  • the refill 40 is received in the positioning groove 2442 of the refill positioning portion 244.
  • An end of the wire 428 away from the pen tip portion 42 is connected to the main board 70, so that the pen tip portion 42 is electrically connected to the micro control unit 72; a second end 625 of the conductive sheet 62 is connected To the main board 70 so that the second pressure sensor 60 is electrically connected to the micro control unit 72.
  • the main board 70 is placed on the main board positioning portion 247 of the pen body frame 24, passes through the main board 70 through a plurality of locking members, and is respectively connected to the connection hole 2474 of the connecting rod 2472 so that the main board 70 is fixed on the pen body frame 24.
  • the first pressure sensor 50 is disposed on an end of the main board 70 near the refill 40. At this time, an end of the pen core 40 away from the pen tip portion 42 is connected to the first pressure sensor 50.
  • the power source 80 is housed in the power source housing space 2464 of the pen body frame 24, the outer cylinder 27 is sleeved on the pen body frame 24, and the battery cover 28 is connected to the outer cylinder On 27, the power source 80 may be installed in the pen body frame 24 and electrically connected to the motherboard 70.
  • FIG. 4 is a working principle diagram of the stylus pen of FIG. 1.
  • the battery 80 is connected to the DC conversion circuit 75 to transmit the output voltage of the battery 80 to the DC conversion circuit 75; the DC conversion circuit 75 is used to boost the output voltage of the battery 80 to The first rising voltage required for the micro-control unit 72 to work normally, and the DC conversion circuit 75 sends the first rising voltage to the micro-control unit 72 and the switching DC boost circuit 76 respectively, so that The micro-control unit 72 operates normally.
  • the normal operating voltage of the micro-control unit 72 is 2.4V, that is, the first rising voltage is 2.4V;
  • the switching DC boost circuit 76 is configured to convert the voltage of the DC conversion circuit 75 The output first rising voltage rises to a second rising voltage.
  • the second rising voltage is 5-30V.
  • the switching DC boost circuit 76 emits the second rising voltage into a high-voltage pulse signal through the pen tip portion 42.
  • the high-voltage pulse signal is a square wave signal.
  • the square wave signal is sensed by the tablet, so that the writing operation of the stylus pen 100 can be learned.
  • the first pressure sensor 50 is electrically connected to the micro control unit 72, and is configured to detect a pressure value in the axial direction of the pen tip portion 42 and send the detected pressure value in the axial direction to a first signal to The micro-control unit 72.
  • the second pressure sensor 60 is electrically connected to the micro control unit 72, and is configured to detect a pressure value in the radial direction of the pen core 40 and send the detected pressure value in the radial direction to the device via a second signal. Mentioned microcontrol unit 72.
  • the micro control unit 72 receives the first signal and the second signal and processes the control signal and outputs a control signal to the switching DC boost circuit 76 to control the switching DC boost circuit 76 to output the first signal and High pressure pulse signal corresponding to the pressure value in the second signal.
  • the stylus pen 100 When the stylus pen 100 is used, the stylus pen 100 is turned on, so that the battery 80 supplies power to the micro-control unit 72 through the DC conversion circuit 75, so that various electronic components in the stylus pen 100 All work fine.
  • the stylus pen 100 When the stylus pen 100 is writing perpendicular to the tablet, the end of the pen core 40 away from the pen tip portion 42 presses against the first pressure sensor 50, and the first pressure sensor 50 detects the pen The pressure value of the core 40 in the axial direction and sends a first signal to the micro-control unit 72, the micro-control unit 72 receives the first signal and processes it, and outputs a control signal to the switching DC boost circuit 76 to The switching DC boost circuit 76 is controlled to output a high-voltage pulse signal to the tablet, and the tablet senses the high-voltage pulse signal, so as to obtain pressure value information of the pen core 40.
  • the first pressure sensor 50 and the second pressure sensor 60 respectively detect the pressure values of the pen core 40 in the axial direction and the radial direction, and respectively Sending a first signal and a second signal to the micro control unit 72.
  • the micro control unit 72 receives the first signal and the second signal and processes the control signal and outputs a control signal to the switching DC boost circuit 76 to control the
  • the switching DC boost circuit 76 outputs a high-voltage pulse signal to the tablet, and the tablet senses the high-voltage pulse signal, so that the pressure value information of the pen core 40 can be obtained.
  • FIG. 5 is a waveform diagram of the pressure signal transmission of the stylus pen of FIG. 1.
  • a signal of a periodic pressure value of the stylus pen 100 of the present application is transmitted as follows: When the stylus pen 100 is writing, the first pressure sensor 50 and the second pressure sensor 60 respectively detect the pressure of the pen core 40. The pressure value in the axial direction and the pressure value in the radial direction. The first pressure sensor 50 sends a first signal to the micro control unit 72, and the second pressure sensor 50 sends a second signal to the micro control unit 72.
  • the first pressure sensor 50 and the second pressure sensor 60 send respective pressure values to the micro control unit 72 in a time-division multiplexing manner, and the micro control unit 72 controls the switch according to different pressure values
  • the high-voltage pulse signals output by the DC boost circuit 76 correspond to different transmission frequencies.
  • the micro-control unit 72 receives the first signal and controls the switching DC voltage boost after processing.
  • the circuit 76 outputs a high-voltage pulse signal with a frequency of f1 to the tablet; after the second pressure sensor 60 sends a second signal to the micro-control unit 72, the micro-control unit 72 receives the second signal and passes After processing, the switching DC boost circuit 76 is controlled to output a high-voltage pulse signal with a transmission frequency f2 to the tablet.
  • the signal output period of the switching DC boost circuit 76 of the stylus 100 is T0.
  • the signal output period T0 includes a first time period T1 and a second time period T2.
  • the switching DC boost circuit 76 transmits a high-voltage pulse signal with a frequency f1 to the tablet; within the second time period T2, the switching DC boost circuit 76 transmits a high-voltage pulse signal with a frequency f2 to the tablet.
  • the tablet can obtain pressure information detected by the first pressure sensor 50 and the second pressure sensor 60. After the device receives the pressure information of the stylus pen 100, the device displays a corresponding writing handwriting on a display device through an APP on the external device.
  • the first pressure sensor 50 and the second pressure sensor 60 of the stylus pen 100 of the present application can respectively detect the pressure values in the axial direction and the radial direction of the pen core 40, so that the comprehensive and preparation can be obtained.
  • Pressure information of the pen core 40 of the stylus pen 100 so that the writing handwriting corresponding to the pen core 40 can be clearly displayed on the external device, and the writing handwriting restoration effect of the stylus pen 100 is improved.
  • FIG. 6 is a schematic structural diagram of a handwriting input device in one embodiment of the present application.
  • the handwriting input device in one embodiment of the present application includes a handwriting tablet 300 and the above-mentioned stylus pen 100.
  • the handwriting tablet 300 is configured to sense the first pressure sensor 50 and the second pressure sensor of the stylus pen 100.
  • 60 detects the pressure information of the pressure value, and transmits the pressure information to the external device 500, and the external device 500 displays the handwriting corresponding to the stylus pen 100 through an APP on the external device 500.

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Abstract

本申请提供的一种触控笔包括笔筒、设置于笔筒内的笔芯、沿笔芯的轴向方向设置的第一压力传感器，主板及电源，电源及第一压力传感器均电性连接于主板。笔芯的笔尖处的径向方向上设置有第二压力传感器，第二压力传感器电性连接于主板，第一压力传感器用于检测笔芯的轴向方向上的压力值并发送信号给主板，第二压力传感器用于检测笔芯的径向方向上的压力值并发送信号给主板。由于第一压力传感器能检测笔芯轴向上的压力值，第二压力传感器能检测笔芯径向上的压力值，因此，手写板能准确地获得笔芯的压力信息，从而能在外部设备上还原笔芯的书写笔迹，提高了触控笔的笔迹还原效果。

Description

手写输入装置及其触控笔 技术领域
本申请涉及手写输入技术领域，尤其涉及一种触控笔及设置有所述触控笔的手写输入装置。
背景技术
现有的触控笔一般包括笔筒、设置于所述笔筒内的笔芯，以及沿所述笔芯的轴向设置于所述笔筒内的压力传感器，所述压力传感器用于检测所述笔芯在书写时的轴向的压力，并发送信号给所述触控笔的处理器，所述处理器接收信号并控制所述触控笔发送信号给手写本，手写本获得所述信号并通过外部显示设置能使所述笔芯的书写笔迹还原。然而，由于现有的触控笔的压力传感器位于所述笔芯的轴向上，若所述触控笔在书写时笔芯的笔头与手写板的输入面之间的夹角较少时，即沿所述笔芯的轴向方向上的压力较少，所述压力传感器较难检测至所述触控笔的书写压力值，则所述手写板无法获得所述压力传感器的压力值的信息，外部显示设置也无法将书写笔迹还原。
发明内容
本申请提供一种能提高笔迹还原效果的触控笔，以及设置有所述触控笔的手写输入装置。
本申请所述的一种触控笔包括笔筒、设置于所述笔筒内的笔芯、沿所述笔芯的轴向方向设置的第一压力传感器，主板及电源，所述电源及所述第一压力传感器均电性连接于所述主板。所述笔芯的笔尖处的径向方向上设置有第二压力传感器，所述第二压力传感器电性连接于所述主板，所述第一压力传感器用于检测所述笔芯的轴向方向上的压力值并发送信号给所述主板，所述第二压力传感器用于检测所述笔芯的径向方向上的压力值并发送信号给所述主板。
本申请还提供一种手写输入装置，包括手写板及触控笔，所述触控笔包括笔筒、设置于所述笔筒内的笔芯、沿所述笔芯的轴向方向设置的第一压力传感器，主板及电源，所述电源及所述第一压力传感器均电性连接于所述主板。所 述笔芯的笔尖处的径向方向上设置有第二压力传感器，所述第二压力传感器电性连接于所述主板，所述第一压力传感器用于检测所述笔芯的轴向方向上的压力值并发送信号给所述主板，所述第二压力传感器用于检测所述笔芯的径向方向上的压力值并发送信号给所述主板，所述手写板用于感应所述触控笔的第一压力传感器及第二压力传感器检测到的压力值的压力信息，并将所述压力信息传输给外部设备。
本申请手写输入装置的所述第一压力传感器能检测所述笔芯轴向上的压力值，所述第二压力传感器能检测所述笔芯径向上的压力值，因此，手写板能准确地获得所述笔芯的轴向或/及径向上的压力信息，从而能在外部设备上还原所述笔芯的书写笔迹，提高了所述触控笔的笔迹还原效果。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请的其中一实施例中的触控笔的立体结构示意图。
图2是图1触控笔的立体结构分解示意图。
图3是图1中的触控笔的部分立体剖视结构示意图。
图4是图1的触控笔的工作原理图。
图5是图1的触控笔的压力信号的传递的波形图。
图6是本申请的其中一实施例中的手写输入装置的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例的描述中，需要理解的是，术语“上”、“下”“左”“右” 等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是暗示或指示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
本发明实施例的描述中，需要理解的是，术语“厚度”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是暗示或指示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
请一并参阅图1至图3，图1是本申请的其中一实施例中的触控笔的立体结构示意图；图2是图1的立体结构分解示意图；图3是图1中的触控笔的部分组装立体剖视结构示意图。本申请的其中一实施例中的触控笔100，包括一笔筒20、设置于所述笔筒20内的笔芯40、沿所述笔芯40的轴向方向设置的第一压力传感器50、设置于所述笔芯40的笔尖处的径向上的一第二压力传感器60、一主板70及一电池80。所述第一压力传感器50及所述第二压力传感器60均电性连接于所述主板70，所述第一压力传感器50用于检测所述笔芯40的轴向上的压力值并发送信号给所述主板70，所述第二压力传感器60用于检测所述笔芯40的径向上的压力值并发送信号给所述主板70。所述主板70收接第一压力传感器50及第二压力传感器60进行处理并控制所述触控笔100发射信号给手写板，所述手写板获得所述触控笔100的发射信号并传输信号给外部设备。所述外部设备可以是显示设备等，所述外部设备接收所述触控笔100传输的信号后，通过所述外部设备上的APP在显示设备上显示所述触控笔100对应的笔迹，即还原所述触控笔的书写笔迹。
本实施例中，所述笔芯40为铅笔芯，所述电源80为干电池。
在他实施例中，所述笔芯40也可以是中性笔笔芯、钢笔笔芯等。
本申请提供的触控笔100的第一压力传感器50能检测出所述笔芯40的轴向上的压力值并发送信号给所述主板70，所述第二压力传感器60能检测出所述笔尖部42的径向上的压力值并发送信号给所述主板70。所述主板70收接第一压力传感器50及第二压力传感器60发送的信号并对所接收到的信号进行处理以及控制所述触控笔100发射信号给手写板，其中，所述触控笔100发送给手写板的信号中包括有第一压力传感器50和第二压力传感器60的压力值。所述手写板获 得所述第一压力传感器50及第二压力传感器60的压力值的信息并传输给外部设备，以便在所述外部设备上显示所述笔芯40对应的笔迹。因此，所述触控笔100在手写板上撰写时，不论所述触控笔100与手写板的输写面之间的夹角为多少度，即，不论所述触控笔100在书写时是垂下或倾斜于所述手写板的输写面，所述触控笔100的压力传感器均能检测到所述笔尖部42的压力值。具体的，所述第一压力传感器50及第二压力传感器60分别能检测到所述笔芯40的轴向及径向上的压力值，因此，手写板能准确地获得所述笔芯40的压力信息，从而能在外部设备上准确地还原所述笔芯40的书写笔迹，提高了所述触控笔的笔迹还原效果。
如图2所示，所述笔筒20包括一笔头框22及连接于所述笔头框22的尾端的一笔身框24，所述笔头框22及所述笔身框24均由信号屏蔽材料制成。所述笔筒20具有屏蔽所述触控笔100的信号的功能，防止所述触控笔100的的信号受到干扰，以便所述触控笔100的信号能稳定地从所述笔芯40的笔尖处传输给手写板。
本实施例中，所述笔头框22及所述笔身框24均由金属材料制成，所述笔头框22及所述笔身框24均电性连接于所述主板70的接地端，以现实屏蔽所述触控笔100的信号的功能。
所述笔头框22为中空的圆台状管体，所述笔芯40的笔尖处能收容于所述笔头框22内。所述笔身框24为横截面为半圆形的管体，所述笔身框24的中部轴向地开设有一收容槽242，所述收容槽242用于安装所述笔芯40、主板70及电源80。具体的，所述笔身框24的收容槽242内于邻近所述笔头框22的一端设置有用于定位所述笔芯40的一笔芯定位部244、所述收容槽242内于远离所述笔头框22的一端设置有用于定位所述电池80的一电源定位部246、以及所述收容槽242内于所述笔芯定位部244与所述电源定位部246之间设置有用于定位所述主板70的一主板定位部247。所述笔芯定位部244是凸设于所述收容槽242的内表面的支撑条，所述支撑条沿所述收容槽242的长度方向延伸，所述支撑条背朝所述收容槽242的内表面的侧面开设有一定位槽2442，所述定位槽2442沿所述笔身框24的轴向延伸。所述电源定位部246为设置于所述收容槽242内的定位片2462，所述定位片2462将所述收容槽242分隔出 一电源收容空间2464。所述主板定位部247为凸设于所述收容槽242内的若干连接杆2472，每一连接杆2472沿所述笔身框24的径向方向延伸，且每一连接杆2472轴向开设有一连接孔2474。
所述笔芯40的笔尖处设置有一笔尖部42，所述第二压力传感器60设置于所述笔尖部42的径向方向上，具体的，所述第二压力传感器60设置于所述笔尖部42的四周的外侧面上。
本实施例中，所述笔尖部42为设置于所述笔芯40的笔尖处的由导电材料制成的导电块，具体的，所述导电块是套设于所述笔芯40上的金属块。所述笔尖部42呈圆台状，所述笔尖部42能收容于所述笔头框22内，即，所述笔尖部42的外侧面与所述笔头框22的内侧面能贴合。
所述笔尖部42包括一前端面422、对应所述前端面422的后端面424，以及连接于所述前端面422的周边与所述后端面424的周边之间的外侧面426。所述笔芯40的笔尖沿所述触控笔100的轴向方向穿过所述笔尖部42的后端面424的中心及所述笔尖部42的前端面422的中心。所述笔尖部42设置有用于电性连接于所述主板70的导线428。
所述第二压力传感器60设置于所述笔尖部42的外侧面426上，具体的，所述第二压力传感器60是能围绕于所述笔尖部42的外侧面426上的薄膜压力传感器。
本实施例中，所述第二压力传感器60呈中空的圆台形。所述第二压力传感器60上设置有一导电片62，所述导电片62能电性连接于所述主板70，所述导电片62用于将所述第二压力传感器60检测到的压力值输送给所述主板70，所述导电片62包括连接于所述第二压力传感器60上的一第一连接端623，以及可连接于所述主板70上的一第二端625。
在其他实施例中，所述笔尖部42可以是圆锥形或圆柱形等其他形状的导电块，所述第二压力传感器60可以是配合于所述导电块的外侧面的圆锥形或圆柱形等其他形状的薄膜压力传感器。
所述主板70上设置有一微控制单元72、一直流转换电路75及一开关直流升压电路76。所述第一压力传感器50设置于所述主板70邻近所述笔芯40的一端。所述直流转换电路75、开关直流升压电路76、第一压力传感器50 及第二压力传感器60均电性连接于所述微控制单元72。所述电源80电性连接于所述主板70，具体的，所述电源80通过所述直流转换电路75连接于所述微控制单元72。所述笔尖部42通过所述导线428电性连接于所述主板70，具体的，所述笔尖部42通过所述主板70上的开关直流升压电路76连接于所述微控制单元72。所述直流转换电路75也电性连接于所述开关直流升压电路76。所述直流转换电路75用于将所述电源80的输出电压升压至所述微控制单元72正常工作所需的电压，并将所述电压输送给所述开关直流升压电路76。所述开关直流升压电路76用于将所述直流转换电路75输送的电压升压至所述笔尖部42能进行信号发射的电压并发射信号给书写板。所述第一压力传感器50及所述第二压力传感器60用于分别检测所述笔头部42的轴向上或径向上的压力值，并分别输送信号给所述微控制单元72，所述微控制单元72接收信号并计算后控制所述开关直流升压电路76输出与所接收到的信号相对应的信号。
所述触控笔100还包括一外筒27及一电池盖28，本实施例中，所述外筒27呈中空的圆筒，所述电池盖28用于定位所述电源80。
请一并参阅图2及图3，组装所述触控笔100时，先将所述第二压力传感器60套设于所述笔尖部42的外侧面426上，使所述第二压力传感器60贴接于所述笔尖部42的外侧面426，即，所述第二压力传感器60位于所述笔芯40的径向位置上；将笔尖部42及所述第二压力传感器60插入所述笔头框22内，使所述第二压力传感器60夹设于所述笔尖部42的外侧面246与所述笔头框22的内侧面之间。此时，所述笔芯40收容于所述笔芯定位部244的定位槽2442内。将所述导线428远离所述笔尖部42的一端连接于所述主板70，以使所述笔尖部42电性连接于所述微控制单元72；将所述导电片62的第二端625连接于所述主板70，以使所述第二压力传感器60电性连接于所述微控制单元72。将所述主板70放置于所述笔身框24的主板定位部247上，通过若干锁固件穿过所述主板70后分别连接于所述连接杆2472的连接孔2474内，以使所述主板70固定于所述笔身框24上。所述主板70靠近笔芯40的一端上设置有所述第一压力传感器50。此时，所述笔芯40远离所述笔尖部42的一端连接于所述第一压力传感器50。将所述电源80收容于所述笔身框24的电源收容空间 2464内，将所述外筒27套设于所述笔身框24上，再将所述电池盖28连接于所述外筒27上，使所述电源80安装于所述笔身框24内且电性连接于所述主板70即可。
请参阅图4，图4是图1的触控笔的工作原理图。所述电池80连接于所述直流转换电路75，以将所述电池80的输出电压输送至所述直流转换电路75；所述直流转换电路75用于将所述电池80的输出电压升压至所述微控制单元72正常工作所需的第一上升电压，所述直流转换电路75将所述第一上升电压分别输送给所述微控制单元72及所述开关直流升压电路76，以便所述微控制单元72正常工作。本实施例中，所述微控制单元72的正常工作的电压为2.4V，即，所述第一上升电压为2.4V；所述开关直流升压电路76用于将所述直流转换电路75的输出的第一上升电压上升至第二上升电压。本实施例中，所述第二上升电压为5-30V。所述开关直流升压电路76将所述第二上升电压形成高压脉冲信号经所述笔尖部42发射出。所述高压脉冲信号为方波信号，手写板感应到所述方波信号，从而可以获悉所述触控笔100的书写操作。所述第一压力传感器50电性连接于所述微控制单元72，用于检测所述笔尖部42轴向上的压力值并将所检测到的轴向上的压力值通过第一信号发送给所述微控制单元72。所述第二压力传感器60电性连接于所述微控制单元72，用于检测所述笔芯40的径向上的压力值并将所检测到的径向上的压力值通过第二信号发送给所述微控制单元72。所述微控制单元72收接所述第一信号及第二信号并进行处理后输出控制信号给所述开关直流升压电路76，以控制所述开关直流升压电路76输出与第一信号及第二信号中的压力值相对应的高压脉冲信号。
使用所述触控笔100时，开启所述触控笔100，使电池80通过所述直流转换电路75给所述微控制单元72供电，以使所述触控笔100内的各个电子元器件均能正常工作。当所述触控笔100垂直于手写板书写时，所述笔芯40远离所述笔尖部42的端部抵压所述第一压力传感器50，所述第一压力传感器50检测到所述笔芯40在轴向上的压力值并发送第一信号给所述微控制单元72，所述微控制单元72接收第一信号并进行处理后输出控制信号给所述开关直流升压电路76，以控制所述开关直流升压电路76输出高压脉冲信号给所述手写板，所述手写板感应到所述高压脉冲信号，从而可获得所述笔芯40的压力值信息。当所述触控笔 100倾斜于手写板书写时，所述第一压力传感器50及所述第二压力传感器60分别检测到所述笔芯40在轴向上及径向上的压力值，并分别发送第一信号及第二信号给所述微控制单元72，所述微控制单元72接收第一信号及第二信号并进行处理后输出控制信号给所述开关直流升压电路76，以控制所述开关直流升压电路76输出高压脉冲信号给所述手写板，所述手写板感应到所述高压脉冲信号，从而可获得所述笔芯40的压力值信息。
请参阅图5，图5是图1的触控笔的压力信号的传递的波形图。本申请触控笔100的一个周期压力值的信号传递如下：当所述触控笔100在进行书写时，所述第一压力传感器50及第二压力传感器60分别检测到所述笔芯40的轴向上的压力值及径向上的压力值，所述第一压力传感器50发送第一信号给所述微控制单元72，所述第二压力传感器50发送第二信号给所述微控制单元72；所述第一压力传感器50及第二压力传感器60采用分时复用的方式将各自的压力值发送给所述微控制单元72，所述微控制单元72根据不同的压力值控制所述开关直流升压电路76输出的高压脉冲信号对应不同的发射频率。
如图5所述，所述第一压力传感器50发送第一信号给所述微控制单元72后，所述微控制单元72收接所述第一信号并经处理后控制所述开关直流升压电路76输出发射频率为f1的高压脉冲信号给手写板；所述第二压力传感器60发送第二信号给所述微控制单元72后，所述微控制单元72收接所述第二信号并经处理后控制所述开关直流升压电路76输出发射频率为f2的高压脉冲信号给手写板。所述触控笔100的开关直流升压电路76的信号输出周期为T0，所述信号输出周期T0内包括第一时间段T1及第二时间段T2，在所述第一时间段T1内所述开关直流升压电路76向所述手写板发射频率f1的高压脉冲信号；在所述第二时间段T2内所述开关直流升压电路76向所述手写板发射频率f2的高压脉冲信号。所述手写板通过感应到所述触控笔100输出的高压脉冲信号的频率及持续的时间的长短，从而可以获得所述第一压力传感器50及第二压力传感器60检测到的压力信息，外部设备接收所述触控笔100的压力信息后，通过所述外部设备上的APP在显示设备上显示对应的书写笔迹。
本申请的触控笔100的第一压力传感器50及第二压力传感器60能分别检测到所述笔芯40的轴向方向及径向方向上的压力值，从而能全面且准备地获得所 述触控笔100的笔芯40的压力信息，以便在所述外部设备上能清晰地显示所述笔芯40对应的书写笔迹，提高了所述触控笔100的书写笔迹还原效果。
请参阅图6，图6是本申请的其中一实施例中的手写输入装置的结构示意图。本申请的其中一实施例中的手写输入装置包括一手写板300及上述的触控笔100，所述手写板300用于感应所述触控笔100的第一压力传感器50及第二压力传感器60检测到的压力值的压力信息，并将所述压力信息传输给外部设备500，所述外部设备500通过其上的APP显示出所述触控笔100对应的笔迹。
以上所述是本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (20)

  1. 一种触控笔，包括笔筒、设置于所述笔筒内的笔芯、沿所述笔芯的轴向方向设置的第一压力传感器，主板及电源，所述电源及所述第一压力传感器均电性连接于所述主板，其特征在于，所述笔芯的笔尖处的径向方向上设置有第二压力传感器，所述第二压力传感器电性连接于所述主板，所述第一压力传感器用于检测所述笔芯的轴向方向上的压力值并发送信号给所述主板，所述第二压力传感器用于检测所述笔芯的径向方向上的压力值并发送信号给所述主板。
  2. 如权利要求1所述的触控笔，其特征在于，所述笔芯的笔尖处设置有笔尖部，所述笔尖部包括由导电材料制成的导电块，所述第二压力传感器设置于所述笔尖部的外侧面。
  3. 如权利要求2所述的触控笔，其特征在于，所述第二压力传感器为围绕于所述笔尖部的外侧面的薄膜压力传感器。
  4. 如权利要求3所述的触控笔，其特征在于，所述薄膜压力传感器套设于所述笔尖部。
  5. 如权利要求1所述的触控笔，其特征在于，所述第二压力传感器通过导电片电性连接于所述主板。
  6. 如权利要求2所述的触控笔，其特征在于，所述第二压力传感器围绕于所述导电块的外侧面。
  7. 如权利要求2所述的触控笔，其特征在于，所述导电块是套设于所述笔芯上的金属块。
  8. 如权利要求2所述的触控笔，其特征在于，所述导电块呈圆锥体形、圆台体形或圆柱体形，所述第二压力传感器对应所述导电块呈圆锥体形、圆台体形或圆柱体形。
  9. 如权利要求2所述的触控笔，其特征在于，所述笔尖部通过导线电性连接于所述主板。
  10. 如权利要求1所述的触控笔，其特征在于，所述第一压力传感器设置于所述主板上邻近所述笔芯的一端。
  11. 如权利要求2所述的触控笔，其特征在于，所述笔筒包括笔头框，所 述笔头框用于收容所述笔尖部，所述第二压力传感器设置于所述笔尖部与所述笔头框之间。
  12. 如权利要求1所述的触控笔，其特征在于，所述笔筒由信号屏蔽材料制成。
  13. 如权利要求1所述的触控笔，其特征在于，所述笔筒由金属村料制成，所述笔筒与所述主板的接地端相连接。
  14. 如权利要求1所述的触控笔，其特征在于，所述笔筒还包括笔身框，所述笔身框用于安装所述笔芯、所述主板及所述电源。
  15. 如权利要求2所述的触控笔，其特征在于，所述主板上设置有微控制单元、直流转换电路及开关直流升压电路，所述电源通过所述直流转换电路连接于所述微控制单元，所述笔尖部通过所述开关直流升压电路连接于所述微控制单元及所述直流转换电路，所述第一压力传感器及所述第二压力传感器均连接于所述微控制单元，所述直流转换电路用于将所述电源的输出电压升压至所述微控制单元正常工作所需的第一上升电压，所述直流转换电路将所述第一上升电压分别输送给所述微控制单元及所述开关直流升压电路，所述开关直流升压电路将所述第一上升电压升压至第二上升电压，并将所述第二上升电压形成高压脉冲信号经所述笔尖部发射出。
  16. 如权利要求15所述的触控笔，其特征在于，所述第一压力传感器检测到所述笔芯的轴向方向上的压力值并输送第一信号给所述微控制单元，所述第二压力传感器检测到所述笔芯的径向方向上的压力值并输送第二信号给所述微控制单元，所述微控制单元收接第一信号及第二信号经计算后控制所述开关直流升压电路输出与所述轴向方向上的压力值及与径向方向上的压力值相对应的高压脉冲信号。
  17. 如权利要求15所述的触控笔，其特征在于，所述第一压力传感器及第二压力传感器采用分时复用的方式将各自的压力值发送给所述微控制单元，所述微控制单元控制所述开关直流升压电路输出的高压脉冲信号的发射频率和时间。
  18. 如权利要求15所述的触控笔，其特征在于，所述开关直流升压电路的输出的高压脉冲信号的电压为5-30V。
  19. 如权利要求15所述的触控笔，其特征在于，所述开关直流升压电路 输出的电压为5-30V的方波信号。
  20. 一种手写输入装置，包括手写板，其特征在于，所述手写输入装置还包括根据权利要求1-19中任一项中所述的触控笔，所述手写板用于感应所述触控笔的第一压力传感器及第二压力传感器检测到的压力值的压力信息，并将所述压力信息传输给外部设备。
PCT/CN2018/099448 2018-08-08 2018-08-08 手写输入装置及其触控笔 WO2020029129A1 (zh)

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EP2787417A1 (en) * 2013-04-05 2014-10-08 BlackBerry Limited Multi-control stylus
WO2017184373A1 (en) * 2016-04-20 2017-10-26 Microsoft Technology Licensing, Llc Pressure sensitive stylus

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CN107526453B (zh) * 2016-06-20 2020-06-05 群光电子股份有限公司 触控笔

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CN102736747A (zh) * 2011-03-29 2012-10-17 卡西欧计算机株式会社 输入装置及接触状态检测方法
EP2787417A1 (en) * 2013-04-05 2014-10-08 BlackBerry Limited Multi-control stylus
WO2017184373A1 (en) * 2016-04-20 2017-10-26 Microsoft Technology Licensing, Llc Pressure sensitive stylus

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