WO2020056834A1 - 一种无源电磁出水笔 - Google Patents

一种无源电磁出水笔 Download PDF

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Publication number
WO2020056834A1
WO2020056834A1 PCT/CN2018/110837 CN2018110837W WO2020056834A1 WO 2020056834 A1 WO2020056834 A1 WO 2020056834A1 CN 2018110837 W CN2018110837 W CN 2018110837W WO 2020056834 A1 WO2020056834 A1 WO 2020056834A1
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WO
WIPO (PCT)
Prior art keywords
iron core
pressure regulating
regulating plate
pen
refill
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2018/110837
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English (en)
French (fr)
Inventor
李远志
邓立明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Ugee Technology Co Ltd
Original Assignee
Shenzhen Ugee Technology Co Ltd
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 Shenzhen Ugee Technology Co Ltd filed Critical Shenzhen Ugee Technology Co Ltd
Priority to US17/277,890 priority Critical patent/US11287906B2/en
Priority to EP18934380.9A priority patent/EP3855294B1/en
Priority to JP2021515624A priority patent/JP6942905B1/ja
Publication of WO2020056834A1 publication Critical patent/WO2020056834A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K29/00—Combinations of writing implements with other articles
    • B43K29/08—Combinations of writing implements with other articles with measuring, computing or indicating devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K27/00—Multiple-point writing implements, e.g. multicolour; Combinations of writing implements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections

Definitions

  • the invention relates to the field of information input equipment, in particular to a passive electromagnetic water pen.
  • Electromagnetic touch is more and more sought after by people because it can perfectly present the original handwriting input.
  • the main components of electromagnetic touch include an antenna board, a control board, and an electromagnetic pen.
  • the electromagnetic pen is a key component of electromagnetic touch. Not only can it be controlled by points, but it can also use its pressure-sensitive characteristics to paint and practice characters.
  • the electromagnetic pen relies on its internal magnetic field closed circuit and the antenna plate on the device applying electromagnetic touch technology to transmit electromagnetic waves to achieve the positioning of the electromagnetic pen.
  • the magnetic field closed loop of the electromagnetic pen is generally composed of an inductor and a capacitor, wherein the inductor is composed of an iron core and a coil. Adjusting the value of the inductance or capacitance can change the frequency of the electromagnetic pen.
  • electromagnetic input technology has been widely used in electronic devices such as tablets, mobile phones, electronic paper books, pen tablets, and electronic whiteboards
  • common electromagnetic pens can only work on corresponding electromagnetic devices, and cannot write on paper. For this reason, electromagnetic pens with both electromagnetic writing and ink writing functions have appeared on the market.
  • variable capacitance technology is limited by the accuracy and price of variable capacitors, which makes it difficult to popularize electromagnetic pens in terms of performance and price.
  • electromagnetic water pen is composed of multiple parts, each part has its own manufacturing error, and each part is of a different material, so the problem of inconsistent size often occurs during assembly and production, resulting in the actual size of the electromagnetic pen when it leaves the factory is Larger than standard size, not conducive to mass production.
  • an object of the present invention is to provide a passive electromagnetic pen with low price and good consistency.
  • a passive electromagnetic water pen comprising a pen core and a pen body, the pen body including a first iron core and an iron core cockpit, the iron core cockpit is provided in order from front to back Refill holder connecting rod, second iron core, third iron core, elastic member, pressure regulating plate and first structure matched with the pressure regulating plate, both the outside of the first core and the outside of the second core are both A coil is wound, the first iron core is close to the tip of the pen core, the second iron core is fixedly connected to the iron core cabin, and the pen core passes through the center of the first iron core and is then One end is clamped, and the other end of the refill clamp link passes through the center of the second core to further promote the movement of the third core; when the pressure regulating plate rotates, the pressure regulating plate is brought into contact with the surface of the first structure An axial displacement is generated, thereby changing the axial displacement of the elastic member.
  • the contact surface between the pressure regulating plate and the first structure is a first inclined surface
  • the contact surface between the first structure and the pressure regulating plate is a second inclined surface
  • the elastic member includes a silicone rod and a spring coated on the silicone rod, and the silicone rod is fixedly connected to the pressure regulating plate.
  • the pressure regulating plate is provided with a hole matched with the silicone rod.
  • the pressure regulating plate is provided with a rotary handle.
  • an outer diameter of the second iron core is smaller than an outer diameter of the third iron core.
  • a first through hole is opened in the center of the second iron core, and a second through hole is opened in the center of the third iron core.
  • the diameter of the first through hole is larger than the diameter of the second through hole.
  • a PCBA circuit board is provided outside the iron core cabin.
  • PCBA circuit board is connected to the iron core cabin by screws.
  • the pen body includes an iron core cockpit and a first iron core wound with a coil.
  • the iron core cockpit includes a pen core clamp connecting rod, a third iron core, and a second iron core wound with a coil.
  • the distance between the second iron core and the third iron core is changed to change the inductance of the passive electromagnetic water pen, thereby changing the frequency of the water pen.
  • Variable inductance technology is used instead of variable capacitance technology ,
  • the price is lower, and the performance is better; a pressure regulating plate and a first structure matched with the pressure regulating plate are added, and the pressure regulating plate is axially displaced by contacting the surface with the first structure surface during rotation; Therefore, the axial displacement of the elastic component is changed.
  • the actual size of the passive electromagnetic pen is equal to the standard size at the factory, which can ensure that the writing weight of each passive electromagnetic pen is consistent. Conducive to mass production.
  • FIG. 1 is a schematic structural diagram of a passive electromagnetic water pen according to the present invention.
  • FIG. 2 is a sectional view of a passive electromagnetic water pen according to the present invention.
  • FIG. 3 is an exploded view of an embodiment of a passive electromagnetic water pen according to the present invention.
  • FIG. 4 is a structural exploded view of another embodiment of a passive electromagnetic water pen according to the present invention.
  • FIG. 5 is a graph showing a relationship between a distance between two iron cores and a coil inductance value according to the present invention.
  • FIG. 6 is a schematic diagram of a matching structure of a pressure regulating plate and a rubber rod according to the present invention.
  • FIG. 7 is a sectional view of a pressure regulating plate of the present invention.
  • Fig. 8 is a sectional view of a first structure of the present invention.
  • a passive electromagnetic water pen includes a pen core 1 and a pen body.
  • the pen body includes a first iron core 1 and an iron core cabin.
  • the cockpit is provided with a refill clamp link 3, a second iron core 4, a third iron core 5, an elastic member, a pressure regulating plate 9 and a first matching with the pressure regulating plate 9 in order from front to back.
  • a structure 62 a coil is wound outside the first iron core 2 and the second iron core 4, the first iron core 2 is located at the pen tip of the pen core 1, and the second iron core 4 and the iron core cabin Fixedly connected, the refill 1 passes through the center of the first iron core 2 and is clamped by one end of the refill holder link 3, and the other end of the refill holder link 3 passes through the center of the second iron core 4
  • the third iron core 5 is further moved; when the pressure regulating plate 9 rotates, the pressure regulating plate 9 generates an axial displacement by contacting the surface with the surface of the first structure 62, thereby changing the axial displacement of the elastic member.
  • the refill holder link 3 has a function of holding the refill and the link. As shown in FIG. 3, one end of the refill holder connecting rod 3 can hold the refill 1; the other end of the refill holder connecting rod 3 has a link function and is an elongated plastic long rod.
  • the refill holder link 3 can be installed from the pen tip direction of the iron core cabin.
  • the refill 1 passes through the center of the first iron core 2 and is held by one end of the refill holder link 3, and the other end of the refill holder link 3 passes through the center of the second core 4 Furthermore, the third iron core 5 is moved to change the distance between the second iron core 4 and the third iron core 5 and cause the inductance value to change.
  • the air gap between the two iron cores is extremely small.
  • the iron core is slightly pushed by the pen core, the two iron cores are slightly pushed.
  • An air gap is created between the magnetic circuit (that is, the magnetic field closed loop), and the magnetic resistance is increased, and the inductance value is greatly reduced.
  • the present invention utilizes this characteristic, and when the pen core moves slightly, a sufficiently large change in pen frequency can be generated. Used in the use of fountain pens, electronic handwriting can be displayed when drawing lightly, and it can feel the same as the real ink pen and pencil.
  • the two winding inductors of the first iron core 2 and the second iron core 4 are connected in parallel with the on-board capacitors.
  • PCBA circuit board The antenna board transmits a frequency to charge the pen. When the antenna board stops transmitting, the pen will change from receiving energy to transmitting energy, and the winding inductance on the pen changes. In parallel with the fixed capacitor on the PCBA circuit board, the pen will be changed. The transmitted frequency, so that the antenna board can obtain different pen frequencies, resulting in changes in different pen pressure values.
  • the first iron core 2, the second iron core 4, and the third iron core 5 of the present invention may all be hollow structures, and the pen tip of the pen core 1 is on the left and the pen tail end is on the right.
  • the core cockpit includes a core front 61 and a core tail (that is, the first structure) 62 that cooperate with each other.
  • the core tail 62 can rotate with the core front 61 during assembly.
  • the second iron core 4 can be completely installed and fixed inside the iron core cabin from the pen tail direction as shown in FIG. 3 or can be inserted into the iron core cabin through a groove 611 on the iron core cabin as shown in FIG. 4.
  • the third iron core 5 is located behind the second iron core 4 and is installed inside the iron core cockpit and can be moved in the iron core cockpit; the refill clamp connecting rod 3 passes through the center of the second iron core 4 and pushes the third iron core 5 Move in the core cockpit.
  • a manner of generating axial displacement may be a manner of generating axial displacement by changing the height of the inclined surface (the contact surface between the two is an inclined surface).
  • the elastic member is used to provide a reverse force to the refill 1, so that the refill 1 obtains the lightness and weight of writing when writing.
  • the elastic component also provides a certain amount of elasticity, which can make the actual size of the passive electromagnetic pen at the factory equal to the standard size through axial displacement.
  • the elastic member may adopt an elastic structure such as a spring, a rubber rod (such as a silicone rod), or a composite structure composed of a spring and a rubber rod.
  • the refill 1 of the present invention can be implemented by using an existing ink refill.
  • the pen body further includes a refill rod 12.
  • the refill rod 12 is between the first iron core 2 and the refill holder connecting rod 3 to protect the refill 1.
  • refill the refill holder link 3 from the direction of the pen tip of the iron core cockpit; after refilling the refill holder link 3, refill the refill rod 12 from the direction of the pen tip with the front part 61 of the iron core cabin.
  • a step 31 is provided on the refill holder link 3.
  • the refill holder connecting rod 3 of the present invention one end clamps the refill 1 and the other end is an elongated plastic long rod with a step difference.
  • the refill holder link 3 has a link function, and the end of the link has a step 31 that can pass through the center of the second core 4 and push the third core 5 through the step 31 to move.
  • a contact surface between the pressure regulating plate 9 and the first structure 62 is a first inclined surface 93, and a contact surface between the first structure 62 and the pressure regulating plate 9 is a first Two slopes 621.
  • the first inclined surface 93 and the second inclined surface 621 are not perpendicular or parallel to the axial direction of the core of the electromagnetic pen.
  • the inclination angles and inclination modes of the first inclined surface 93 and the second inclined surface 621 can be flexibly selected according to actual needs.
  • the contact surfaces of the pressure regulating plate 9 and the first structure 62 all adopt a sloped structure. In this way, when the pressure regulating plate 9 is in contact with the first structure 62 during the rotation, it will rise or fall along the slope, and then change.
  • the space for accommodating the elastic member allows the elastic member to move in the axial direction, so that the lightness and weight of the pen can be changed.
  • the elastic member includes a silicone rod 7 and a spring 8 coated on the silicone rod 7.
  • the silicone rod 7 is fixedly connected to the pressure regulating plate 9.
  • the silicone rod 7 and the spring 8 of the present invention are used to provide a reverse force to the refill 1, so that the refill 1 obtains the lightness and weight of writing when writing.
  • a part of the length of the silicone rod 7 can be fixed in the pressure regulating plate 9, and the silicone rod 7 is covered with a spring 8.
  • the silicone rod 7 and the spring 8 will go to the rear of the iron core cabin ( That is, the first structure) applies force in the 62 direction to obtain a reverse force.
  • the contact surface between the silicone rod 7 or the spring 8 and the pressure regulating plate 9 may be a flat surface.
  • the pressure regulating plate 9 is provided with a hole 92 matching with the silicone rod 7.
  • the hole 92 may be a blind hole with a structure such as a cylindrical hole or an irregular hole, and its inner diameter is slightly larger than that of the silicone rod 7, and the silicone rod 7 can be inserted into the hole to achieve a fixed function.
  • a rotary handle 91 is provided on the pressure regulating plate 9.
  • the additional rotation handle 91 makes the pressure regulating plate 9 more convenient to rotate.
  • the handle 91 may partially expose the outer surface of the iron core cabin.
  • an outer diameter of the second core is smaller than an outer diameter of the third core.
  • the outer diameter of the third core without winding in the present invention is larger than that of the second core with winding. Near the end of the second core, the outer diameter of the third core is reduced, so that the overall appearance of the pen will not be affected by the inside.
  • the uncoated third iron core results in a sudden appearance, and the overall appearance consistency is better.
  • a center of the second core is provided with a first through hole
  • a center of the third core is provided with a second through hole
  • a diameter of the first through hole is larger than that of the second through hole. diameter of.
  • the first through hole of the second iron core of the present invention has a larger diameter than the second through hole of the third iron core, which allows the refill to push the third iron core through the step at the end of the connecting rod of the refill holder.
  • a PCBA circuit board 10 is provided outside the iron core cabin.
  • the PCBA circuit board 10 is electrically connected to the coil to convert the changed inductance into a change in frequency, so that the antenna board can obtain different pen frequencies and generate different pen pressure values.
  • the PCBA circuit board 10 is located at the back of the iron core cabin, and can be fixedly connected to the iron core cabin by means of screws 11 or the like, as shown in FIG. 3 or FIG. 4.
  • the PCBA circuit board 10 is connected to the iron core cabin by screws 11.
  • the working principle of a passive electromagnetic water pen according to the present invention is: when writing force is applied to the pen tip, the pen core passes through the center of the first iron core and is clamped by one end of the pen core clamp link, The other end (long rod) passes through the center of the second iron core and pushes the third iron core through a step to form a different distance between the second iron core and the third iron core, so that the inductance on the second iron core coil
  • the inductance of the second iron core changes and the inductance of the first iron core coil is connected in parallel with the fixed capacitor on the PCBA circuit board, and then the frequency of the pen emission is changed, resulting in changes in different pen pressure values.
  • the present invention adds a pressure regulating plate and a first structure that cooperates with the pressure regulating plate.
  • the pressure regulator plate When the actual size of the passive electromagnetic water pen is equal to the standard size or different writing weight is required, only the Rotate the handle of the pressure regulator plate, so that the pressure regulator plate will have an axial displacement due to the change of the contact mode with the first structure surface (such as the slope of the contact is raised or lowered).
  • the space between the silicone rod and the spring is changed, so that the silicone rod and the spring also have corresponding axial displacement (the actual size of the passive electromagnetic pen can be made to be the standard size or get different writing weight) when it leaves the factory.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pens And Brushes (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种无源电磁出水笔，包括笔芯（1）和笔本体，笔本体包括第一铁芯（2）和铁芯座舱，铁芯座舱由前至后依次设有笔芯夹具连杆（3）、第二铁芯（4）、第三铁芯（5）、弹性部件、调压板（9）和与所述调压板（9）相配合的第一结构（62），第一铁芯（2）外和第二铁芯（4）外均绕有线圈，第一铁芯（2）靠近笔芯（1）的笔尖端，第二铁芯（4）与铁芯座舱固定连接，笔芯（1）穿过第一铁芯（2）的中心后被笔芯夹具连杆（3）的一端夹持，笔芯夹具连杆（3）的另一端穿过第二铁芯（4）的中心进而推动第三铁芯（5）运动；调压板（9）在旋转时通过表面与第一结构（62）表面接触使调压板（9）产生轴向位移，从而改变弹性部件的轴向位移。这种无源电磁出水笔采用了变电感技术，价格更低，性能更好；增设了调压板和第一结构，尺寸一致性和轻重感一致性好，可广泛应用于信息输入设备领域。

Description

一种无源电磁出水笔
技术领域
本发明涉及信息输入设备领域，尤其是一种无源电磁出水笔。
背景技术
随着数字化电子信息技术的不断发展，人机交互越来越贴近生活。电磁触控凭借其能够完美呈现原笔迹输入而越来越受到人们的追捧。
电磁触控主要器件包含天线板、控制板和电磁笔。其中电磁笔作为电磁触控的关键组成部分，不但可以点控，还可以利用其压感的特点进行绘画、练字等。
电磁笔依靠其内部的磁场闭合电路与应用电磁触控技术设备上的天线板传递电磁波来实现电磁笔的定位。电磁笔的磁场闭合回路一般由电感和电容组成，其中电感由铁芯和线圈组成，调整电感或电容的值可以改变电磁笔的频率。
虽然电磁输入技术现已广泛应用在平板、手机、电纸书、手写板、电子白板等电子设备上，但常见的电磁笔只能工作在相应的电磁设备上，无法在纸张上进行书写。为此，市场上出现了同时具有电磁书写和墨水书写功能的电磁出水笔。
目前电磁出水笔，大都通过变电容技术来实现，但变电容技术受限于可变电容的精度与价格，使得电磁出水笔在性能、价格等方面出现了普及上的困难。此外，电磁出水笔是由多件零件组成的，各零件有各自制造误差，各零件又是不同材质，所以往往在组装生产时会产生尺寸不一致的问题，导致电磁笔出厂时的实际尺寸小于或大于标准尺寸，不利于批量生产。
发明内容
为解决上述技术问题，本发明的目的在于：提供一种价格低和一致性好的无源电磁出水笔。
本发明所采取的技术方案是：一种无源电磁出水笔，包括笔芯和笔本体，所述笔本体包括第一铁芯和铁芯座舱，所述铁芯座舱由前至后依次设有笔芯夹具连杆、第二铁芯、第三铁芯、弹性部件、调压板和与所述调压板相配合的第一结构，所述第一铁芯外和第二铁芯外均绕有线圈，所述第一铁芯靠近笔芯的笔尖端，所述第二铁芯与铁芯座舱固定连接，所述笔芯穿过第一铁芯的中心后被笔芯夹具连杆的一端夹持，所述笔芯夹具连杆的另一端穿过第二铁芯的中心进而推动第三铁芯运动；所述调压板在旋转时通过表面与第一结构表面接触使调压板产生轴向位移，从而改变弹性部件的轴向位移。
进一步，所述笔芯夹具连杆上设有阶梯。
进一步，所述调压板与第一结构的接触面为第一斜面，所述第一结构与调压板的接触面为第二斜面。
进一步，所述弹性部件包括硅胶棒和外套于硅胶棒的弹簧，所述硅胶棒与调压板固定连接。
进一步，所述调压板上设有与所述硅胶棒相配合的孔。
进一步，所述调压板上设有旋柄。
进一步，所述第二铁芯的外径小于第三铁芯的外径。
进一步，所述第二铁芯的中心开有第一通孔，所述第三铁芯的中心开有第二通孔，所述第一通孔的直径大于第二通孔的直径。
进一步，所述铁芯座舱外设有PCBA电路板。
进一步，所述PCBA电路板通过螺丝与铁芯座舱连接。
本发明的有益效果是：笔本体包括铁芯座舱和绕有线圈的第一铁芯，铁芯座舱包括笔芯夹具连杆、第三铁芯以及绕有线圈的第二铁芯，通过笔芯的运动配合笔芯夹具连杆改变第二铁芯和第三铁芯的间的距离来改变无源电磁出水笔的电感，进而改变出水笔的频率，采用了变电感技术来取代变电容技术，价格更低，性能更好；增设了调压板和与所述调压板相配合的第一结构，调压板在旋转时通过表面与第一结构表面接触使调压板产生轴向位移，从而改变弹性部件的轴向位移，通过改变弹性部件的轴向位移使得无源电磁出水笔出厂时的实际尺寸等于标准尺寸，能保证每支无源电磁出水笔的书写轻重感保持一致，有利于批量生产。
附图说明
图1为本发明无源电磁出水笔的结构示意图；
图2为本发明无源电磁出水笔的剖视图；
图3为本发明无源电磁出水笔的一种实施例结构分解图；
图4为本发明无源电磁出水笔的另一种实施例结构分解图；
图5为本发明两铁芯间距与线圈电感值的关系曲线图；
图6为本发明调压板与橡胶棒的配合结构示意图；
图7为本发明调压板的剖视图；
图8为本发明第一结构的剖视图。
具体实施方式
下面结合说明书附图和具体实施例对本发明作进一步解释和说明。
参照图1、图2、图3和图4，本发明一种无源电磁出水笔，包括笔芯1和笔本体，所述笔本体包括第一铁芯1和铁芯座舱，所述铁芯座舱由前至后由前至后依次设有笔芯夹具连杆3、第二铁芯4、第三铁芯5、弹性部件、调压板9和与所述调压板9相配合的第一结构62，所述第一铁芯2外和第二铁芯4外均绕有线圈，所述第一铁芯2位于笔芯1的笔尖端，所述第二铁芯4与铁芯座舱固定连接，所述笔芯1穿过第一铁芯2的中心后被笔芯夹具连杆3的一端夹持，所述笔芯夹具连杆3的另一端穿过第二铁芯4的中心进而推动第三铁芯5运动；所述调压板9在旋转时通过表面与第一结构62表面接触使调压板9产生轴向位移，从而改变弹性部件的轴向位移。
本发明使用了三铁芯的结构来实现电感的改变，其中，第一铁芯2这一绕线铁芯，靠近笔芯的笔尖端，负责收发能量。而第二铁芯4为绕线铁芯，第三铁芯5为不绕线的铁芯。第二铁芯4中心的通孔，较第三铁芯5的中心通孔的大，这两铁芯置于笔芯后方，且第二铁芯4比第三铁芯5更靠近笔芯笔尖，这种结构可以让第三铁芯5的后方有足够的空间，去设计内部的弹性部件，让笔尖有优异的力反馈表现。
笔芯夹具连杆3，具有夹持笔芯和连杆的功能。如图3所示，笔芯夹具连杆3的一端可夹持笔芯1；笔芯夹具连杆3的另一端具有连杆功能，为一细长塑件长杆。笔芯夹具连杆3可从铁芯座舱的笔尖方向装入。
当笔芯受力时，笔芯1穿过第一铁芯2的中心后被笔芯夹具连杆3的一端夹持，笔芯夹具连杆3的另一端穿过第二铁芯4的中心进而推动第三铁芯5运动，改变第二铁芯4和第三铁芯5这两铁芯间的距离，造成电感值变化。
如图5所示，本发明当第二铁芯4和第三铁芯5这两铁芯紧贴时，两铁芯间气隙极小，当铁芯被笔芯微微推动时，两铁芯间产生气隙，此时磁路（即磁场封闭回路）上，增加了磁阻，电感值会大幅度地变低。本发明利用此特性，当笔芯微动时，就能产生够大的笔频率变化。运用在出水笔的使用场合，电子笔迹能在轻画时就能显现，能与真实的墨水笔、铅笔的使用感觉相同。
PCBA电路板上有固定电容值，第一铁芯2和第二铁芯4这两绕线电感，与板上电容并联接 PCBA电路板上。初始时天线板发射一频率对笔充电，当天线板停止发射时，笔会从接收能量改为发射能量，而笔上的绕线电感发生变化，与PCBA电路板上的固定电容并联，会改笔发射的频率，进而使天线板能获得不同的笔频率，产生不同笔压值的变化。
如图1和2所示，本发明第一铁芯2、第二铁芯4和第三铁芯5可均为中空的结构，而笔芯1的笔尖端在左，笔尾端在右。如图3或图4所示，铁芯座舱包括相互配合的铁芯前部61和铁芯尾部（即第一结构）62，铁芯尾部62在装配时可以旋转的方式与铁芯前部61结合形成铁芯座舱。第二铁芯4可如图3所示从笔尾方向完全安装固定于铁芯座舱的内部或如图4所示通过铁芯座舱上的凹槽611装入铁芯座舱。而第三铁芯5位于第二铁芯4之后，安装在铁芯座舱的内部，可在铁芯座舱中移动；笔芯夹具连杆3穿过第二铁芯4的中心后推动第三铁芯5在铁芯座舱中移动。
调压板9在旋转时与第一结构62的接触产生轴向位移的方式可以是通过斜面（二者的接触面为斜面）的高低变化产生轴向位移的方式。
弹性部件，用于给笔芯1提供反向的作用力，使得笔芯1在书写时获得书写的轻重感。此外，弹性部件还提供了一定的弹性余量，能通过轴向位移使得无源电磁笔出厂时的实际尺寸等于标准尺寸。弹性部件可以采用弹簧、橡胶棒（如硅胶棒）等具有弹性的结构，也可以是弹簧和橡胶棒等组成的复合结构。
本发明的笔芯1可采用现有的墨水笔笔芯来实现。
具体地，如图1、图3或图4所示，笔本体还包括笔芯杆12，笔芯杆12在第一铁芯2和笔芯夹具连杆3之间，可保护笔芯1。装配时先将笔芯夹具连杆3从铁芯座舱的笔尖方向装入；笔芯夹具连杆3装入后，再将笔芯杆12从笔尖方向，与铁芯座舱前部61结合。
参照图1和图3，进一步作为优选的实施方式，所述笔芯夹具连杆3上设有阶梯31。
本发明的笔芯夹具连杆3，一端夹持笔芯1，另一端为一有阶梯差的细长塑件长杆。当笔芯1受力时，笔芯夹具连杆3具有连杆功能，其连杆末端有一阶梯31，能够穿过第二铁芯4的中心，通过阶梯31推动第三铁芯5运动。
参照图7和图8，进一步作为优选的实施方式，所述调压板9与第一结构62的接触面为第一斜面93，所述第一结构62与调压板9的接触面为第二斜面621。
其中，第一斜面93和第二斜面621，均不垂直或不平行于电磁出水笔的笔芯轴向。第一斜面93和第二斜面621的倾斜角度和倾斜方式（如左倾斜、右倾斜等）均可以根据实际需要灵活选取。
调压板9与第一结构62的接触面均采用了斜面的结构，这样调压板9在旋转时因与第一结构62的接触是斜面接触，所以会沿斜面升高或降低，进而改变容纳弹性部件的空间，使得弹性部件沿着轴向运动，如此就可以改变笔书写时的轻重感。
参照图3，进一步作为优选的实施方式，所述弹性部件包括硅胶棒7和外套于硅胶棒7的弹簧8，所述硅胶棒7与调压板9固定连接。
本发明硅胶棒7和弹簧8，用于给笔芯1提供反向的作用力，使得笔芯1在书写时获得书写的轻重感。具体地，硅胶棒7的部分长度，可固定于调压板9中，而硅胶棒7外套有弹簧8，当笔芯1受力时，硅胶棒7和弹簧8，会往铁芯座舱尾部（即第一结构）62方向施力，以获得反向的作用力。而硅胶棒7或弹簧8与调压板9的接触面可以是平面。
参照图6，进一步作为优选的实施方式，所述调压板9上设有与所述硅胶棒7相配合的孔92。
其中，孔92可为圆柱孔、不规则孔等结构的盲孔，其内径比硅胶棒7略大，硅胶棒7可插入该孔内实现固定功能。
参照图3或图4，进一步作为优选的实施方式，所述调压板9上设有旋柄91。
本发明通过增设的旋柄91来使得调压板9旋转起来更加方便。旋柄91可以部分露出铁芯座舱外表面。
进一步作为优选的实施方式，所述第二铁芯的外径小于第三铁芯的外径。
本发明没绕线的第三铁芯外径，比绕线的第二铁芯的大；靠近第二铁芯的一端，第三铁芯外径缩小，使得笔的整体外观，不会因为内部有没绕线的第三铁芯而造成外观突兀，整体外观一致性较好。
进一步作为优选的实施方式，所述第二铁芯的中心开有第一通孔，所述第三铁芯的中心开有第二通孔，所述第一通孔的直径大于第二通孔的直径。
本发明第二铁芯的第一通孔，较第三铁芯的第二通孔的直径大，能让笔芯通过笔芯夹具连杆末端的阶梯来推动第三铁芯。
参照图3或图4，进一步作为优选的实施方式，所述铁芯座舱外设有PCBA电路板10。
其中，PCBA电路板10与线圈电连接，以将变化的电感转换为频率的变化，进而令天线板能获得不同的笔频率，产生不同的笔压值。具体地，PCBA电路板10位于铁芯座舱的后面，可以通过螺丝11等方式与铁芯座舱固定连接，如图3或图4所示。
如图3或图4所示，进一步作为优选的实施方式，所述PCBA电路板10通过螺丝11与铁芯座舱连接。
本发明一种无源电磁出水笔的工作原理为：在笔芯笔尖书写受力时，笔芯穿过第一铁芯的中心被笔芯夹具连杆的一端夹持，笔芯夹具连杆的另一端（长杆）穿过第二铁芯的中心，通过阶梯推动第三铁芯运动，从而在第二铁芯与第三铁芯间形成不同的距离，使得第二铁芯线圈上的电感值发生改变，第二铁芯发生变化的电感和第一铁芯线圈的电感与PCBA电路板上的固定电容并联，进而改变笔发射的频率，产生不同笔压值的变化，同时第三铁芯沿轴向运动会挤压硅胶棒和弹簧等构成的弹性部件，给笔芯反向的作用力，使得笔芯书写时有轻重感。此外，本发明增设了调压板和与所述调压板相配合的第一结构，在要使无源电磁出水笔出厂时的实际尺寸等于标准尺寸或获得不同的书写轻重感时，只需要旋转调压板的旋柄，使得调压板因与第一结构表面的接触方式改变（如接触的斜面升高或降低）而产生轴向位移即可，调压板产生轴向位移会令容纳硅胶棒和弹簧的空间发生改变，让硅胶棒和弹簧也产生相应的轴向位移（可以使无源电磁出水笔出厂时的实际尺寸等于标准尺寸或获得不同的书写轻重感）。
以上是对本发明的较佳实施进行了具体说明，但本发明并不限于所述实施例，熟悉本领域的技术人员在不违背本发明精神的前提下还可做作出种种的等同变形或替换，这些等同的变形或替换均包含在本申请权利要求所限定的范围内。

Claims (10)

  1. 一种无源电磁出水笔，其特征在于：包括笔芯和笔本体，所述笔本体包括第一铁芯和铁芯座舱，所述铁芯座舱由前至后依次设有笔芯夹具连杆、第二铁芯、第三铁芯、弹性部件、调压板和与所述调压板相配合的第一结构，所述第一铁芯外和第二铁芯外均绕有线圈，所述第一铁芯靠近笔芯的笔尖端，所述第二铁芯与铁芯座舱固定连接，所述笔芯穿过第一铁芯的中心后被笔芯夹具连杆的一端夹持，所述笔芯夹具连杆的另一端穿过第二铁芯的中心进而推动第三铁芯运动；所述调压板在旋转时通过表面与第一结构表面接触使调压板产生轴向位移，从而改变弹性部件的轴向位移。
  2. 根据权利要求1所述的一种无源电磁出水笔，其特征在于：所述笔芯夹具连杆上设有阶梯。
  3. 根据权利要求1所述的一种无源电磁出水笔，其特征在于：所述调压板与第一结构的接触面为第一斜面，所述第一结构与调压板的接触面为第二斜面。
  4. 根据权利要求1所述的一种无源电磁出水笔，其特征在于：所述弹性部件包括硅胶棒和外套于硅胶棒的弹簧，所述硅胶棒与调压板固定连接。
  5. 根据权利要求4所述的一种无源电磁出水笔，其特征在于：所述调压板上设有与所述硅胶棒相配合的孔。
  6. 根据权利要求1-5任一项所述的一种无源电磁出水笔，其特征在于：所述调压板上设有旋柄。
  7. 根据权利要求1-5任一项所述的一种无源电磁出水笔，其特征在于：所述第二铁芯的外径小于第三铁芯的外径。
  8. 根据权利要求1-5任一项所述的一种无源电磁出水笔，其特征在于：所述第二铁芯的中心开有第一通孔，所述第三铁芯的中心开有第二通孔，所述第一通孔的直径大于第二通孔的直径。
  9. 根据权利要求1-5任一项所述的一种无源电磁出水笔，其特征在于：所述铁芯座舱外设有PCBA电路板。
  10. 根据权利要求9所述的一种无源电磁出水笔，其特征在于：所述PCBA电路板通过螺丝与铁芯座舱连接。
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EP3855294A4 (en) 2021-11-17
CN109002197B (zh) 2021-05-11
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EP3855294A1 (en) 2021-07-28

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