WO2018148943A1 - 压力检测装置以及主动笔 - Google Patents
压力检测装置以及主动笔 Download PDFInfo
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- WO2018148943A1 WO2018148943A1 PCT/CN2017/073972 CN2017073972W WO2018148943A1 WO 2018148943 A1 WO2018148943 A1 WO 2018148943A1 CN 2017073972 W CN2017073972 W CN 2017073972W WO 2018148943 A1 WO2018148943 A1 WO 2018148943A1
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- magnetic
- magnetic sensing
- sensing device
- pressure detecting
- active pen
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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 field of touch technologies, and in particular, to a pressure detecting device and an active pen.
- the active pen is a common tool used for human-computer interaction.
- the current active pen work process is based on the fact that when writing, the screen of the electronic device exerts a certain pressure on the pen tip, and the pressure detecting device inside the active pen receives the pressure and After the received pressure signal is processed, it is sent to the screen of the electronic device through the conductive component, via the pen tip, and coupled with the capacitance of the screen end, thereby presenting the written content on the touch screen of the electronic device.
- the impact force received by the tip of the active pen is directly transmitted to the pressure sensor, so that the probability that the pressure sensor is destroyed in the case of the falling pen is increased.
- the existing pressure sensor for the active pen has a complicated structure and requires high manufacturing precision and assembly tolerance.
- An embodiment of the present application provides a pressure detecting device for an active pen, comprising: a resilient member connected to a tip assembly of the active pen at one end; a magnetic device that moves with deformation of the elastic member, magnetic a device disposed in the elastic component; a magnetic sensing device for sensing a magnetic field around the magnetic device and converting the magnetic field into an electrical signal to determine a pressure experienced by a refill of the active pen based on the electrical signal, The magnetic sensing device is spaced apart from the magnetic device; and a magnetic sensing support coupled to the elastic component and configured to support the magnetic sensing device, wherein the magnetic sensing support is adjacent to the magnetic device
- One side has a stepped structure, and the step structure hinders deformation of the elastic component in a case where the pressure applied by the nib assembly is greater than a predetermined value.
- the deformation of the elastic component includes expansion and/or deflection of the elastic component.
- the elastic component may include an elastic support ring and an elastic member coupled to the elastic support ring.
- the pressure detecting device further includes: an adjusting unit for adjusting a spacing between the magnetic device and the magnetic sensing device, the adjusting unit being located on the magnetic sensing support .
- the adjustment unit is located on both sides of the magnetic sensing device.
- the adjustment unit includes: an elastic body on a side of the magnetic induction support and abutting against the magnetic sensing device; and an adjustment for deforming the elastic body to adjust a position of the magnetic sensing device
- the adjusting member abuts against the other side of the magnetic sensing device and is used together with the elastic body to accommodate the magnetic sensing device.
- the pressure detecting device further includes: a processing circuit electrically connected to the magnetic sensing device, the processing circuit configured to receive an electrical signal representing the change in the magnetic field from the magnetic sensing device, And determining a pressure experienced by the nib assembly based on the electrical signal.
- the magnetic sensing device includes a Hall device that is electrically coupled to the processing circuit.
- the magnetic sensing device includes an inductive device that senses a magnetic field around the magnetic device by sensing a change in inductance value, the inductive device being electrically coupled to the processing circuit.
- Another embodiment of the present application also provides an active pen for an electronic device, comprising: a tip assembly; and a pressure detecting device as described above for detecting a pressure applied to the tip assembly.
- the pressure detecting device for an active pen according to the present application and the active pen have at least the following advantageous technical effects: since the magnetic sensing support in the pressure detecting device has a stepped structure, it is possible to prevent excessive deformation of the elastic member when the active pen falls, and enhance The ability of the active pen to resist falling.
- FIG. 1 illustrates an exemplary structure of a pressure detecting device for an active pen according to an embodiment of the present application.
- Fig. 2 shows another exemplary structure of a pressure detecting device according to the present application.
- FIG. 3 illustrates an exemplary structure of an active pen according to an embodiment of the present application.
- FIG. 1 shows an exemplary structure of a magnetic induction pressure detecting device for an active pen according to an embodiment of the present application.
- the pressure detecting device 10 is configured to determine the pressure applied by the nib assembly of the active pen by magnetic induction, so that the content written by the nib assembly can be presented in correspondence with the active pen based on the detected pressure. On the display of the electronic device.
- the pressure detecting device 10 for an active pen may include: a resilient member 101 having one end connected to the tip assembly of the active pen; and the magnetic device 102 moving with the deformation of the elastic member 101, the magnetic device is fixed to An elastic component 101; a magnetic sensing device 103 spaced apart from the magnetic device 102 for sensing a magnetic field around the magnetic device 102 and converting the magnetic field into an electrical signal to determine a pressure applied to the refill of the active pen based on the electrical signal;
- the sensing support 104 is coupled to the elastic component 101 and supports the magnetic sensing device 103, wherein the magnetic sensing support 104 has a stepped structure T on a side close to the magnetic device 102, and the pressure applied to the tip assembly is greater than a predetermined value.
- the step structure T blocks the deformation of the elastic member 101.
- one end of the elastic component 101 is coupled to the nib assembly of the active pen and deforms when the nib assembly is under pressure.
- the elastic component 101 may include a spring, and more specifically, for example, the elastic component 101 may include an elastic support ring and an elastic member (such as a spring, but is not limited thereto) connected to the elastic support ring.
- the nib assembly may include a nib and a sleeve that is outside the nib
- the nib cover but the application is not limited thereto, for example, the nib assembly may also include only the nib.
- one end of the resilient component can for example be connected to the nib sleeve of the nib assembly.
- the magnetic device 102 can be any magnetic device capable of forming a magnetic field, such as a magnet, a magnet, or the like.
- the magnetic device 102 can be secured within a bore in the middle of the resilient component 101, for example, the magnetic device 102 can be soldered to one end of the resilient component 101 that is coupled to a tip assembly (eg, a nib sleeve) such that the resilient component 101 is received from the nib.
- a tip assembly eg, a nib sleeve
- magnetic sensing device 103 is placed spaced apart from magnetic device 102 for sensing magnetic fields formed by magnetic device 102 as well as changes in magnetic fields.
- the magnetic sensing device 103 can sense a change in the magnetic field formed by the magnetic device 102.
- the magnetic sensing device 103 may be any magnetic sensing device capable of measuring the magnetic field strength and/or the magnetic field direction, such as a Hall element, an anisotropic magnetoresistance (AMR) element, an inductor. And so on.
- the magnetic sensing device 103 can sense changes in the magnetic field due to deformation of the resilient assembly 101 (eg, including, but not limited to, axial expansion and contraction, deflection of the resilient component).
- the deformation of the elastic component 101 may include compression and stretching in the axial direction of the elastic component 101.
- the elastic member 101 undergoes compression deformation such that the magnetic device 102 fixed in the hole in the middle of the elastic member 101 approaches the magnetic sensing device 103, so that the magnetic sensing device 103 senses the magnetic property.
- the magnetic field strength of the magnetic field formed by device 102 will increase.
- the pressure applied to the nib assembly is reduced, the deformation of the elastic assembly 101 is reduced, so that the magnetic device 102 fixed in the hole in the middle of the elastic assembly 101 is away from the magnetic sensing device 103, thereby the magnetic sensing device.
- the magnetic field strength of the magnetic field formed by the perceived magnetic device will be reduced.
- the deformation that occurs in the resilient assembly 101 can also include deflection that occurs along the axial direction of the resilient assembly 101.
- the elastic member 101 can be deflected along the point A shown in FIG. 1 under the pressure of the nib assembly to change the magnetic field sensed by the magnetic sensing device 103.
- the magnetic sensing support 104 can be coupled to the elastic component 101, for example, by being sleeved within the elastic component 101.
- the elastic component 101 can be sleeved on the magnetic sensing support 104.
- the magnetic induction support 104 may be made of an insulating material such as plastic, rubber or the like.
- the magnetic sensing device 103 can be housed and fixed by placing the magnetic sensing device 103 in a recess provided on the surface of the magnetic sensing support 104.
- the magnetic sensing device 103 is fixed by placing the magnetic sensing device 103 in the groove of the magnetic sensing support 104
- the present application is not limited thereto.
- the magnetic induction support member 103 may have a stepped structure T on the side close to the magnetic device, and in the case where the pressure applied to the nib assembly is greater than a predetermined value, the elastic assembly 101 stops deformation by, for example, abutting against the stepped structure T.
- the elastic assembly 101 deforms along point A while being subjected to the impact force of the nib assembly, and the point B on the elastic assembly 101 contacts the magnetic sense.
- the step 104 of the support member 104 is stopped, the deformation is stopped. Thereby, it is possible to prevent the elastic member 101 from being excessively deformed and causing damage, and the anti-drop ability of the active pen is enhanced.
- the pressure detecting device 10 may further include: a processing circuit (not shown) electrically connected to the magnetic sensing device 103, the processing circuit being configured to receive the representation from the magnetic sensing device 103 The electrical signal of the magnetic field changes, and the pressure experienced by the nib assembly is determined based on the electrical signal.
- a processing circuit (not shown) electrically connected to the magnetic sensing device 103, the processing circuit being configured to receive the representation from the magnetic sensing device 103 The electrical signal of the magnetic field changes, and the pressure experienced by the nib assembly is determined based on the electrical signal.
- the magnetic sensing device 103 may include a Hall device electrically connected to the processing circuit.
- the processing circuit may be configured to receive a voltage signal representing a change in magnetic field strength from the magnetic field measuring sensor, and based on The voltage signal determines the pressure experienced by the nib assembly. More specifically, since the spatial magnetic field formed by the magnetic device 102 is not a uniform magnetic field, the movement of the magnetic device 102 causes a change in the magnetic field strength of the region where the magnetic field measuring sensor is located, thereby changing the output voltage of the magnetic field measuring sensor, and the processing circuit detects the magnetic field. The output voltage of the sensor is measured so that the pressure applied to the nib assembly can be indirectly recognized.
- the magnetic sensing device 103 may include an inductive device that induces a magnetic field around the magnetic device 103 by sensing a change in inductance value, the inductive device being electrically coupled to the processing circuit.
- the processing circuit is configured to receive an inductance value change signal representative of the magnetic field change from the inductive device, and based on the inductance
- the value change signal determines the pressure on the tip of the pen. More specifically, since the inductance of the inductor in the inductive device is closely related to its internal magnetic flux, when the magnetic device 102 is slightly moved due to the deformation of the elastic member 101, the magnetic field around the magnetic device 102 causes the internal magnetic flux of the inductor to occur. Drastic changes, resulting in changes in inductance.
- the processing circuit can know the position of the magnetic device by obtaining the amount of change in the inductance value of the inductor, thereby determining the pressure applied to the nib assembly.
- the processing circuit may also perform corresponding processing on the received electrical signal representing the pressure based on the sensing of the magnetic sensing device (eg, analyzing changes in pressure received by the nib assembly, etc.)
- the specific pressure of the pen tip group is determined by those skilled in the art, and details are not described herein.
- the pressure detecting device 10 may further include: an adjusting unit for adjusting a spacing between the magnetic device and the magnetic sensing device, the adjusting unit being located on the magnetic sensing support.
- Fig. 2 shows another exemplary structure of a pressure detecting device according to the present application.
- the pressure detecting device further includes an adjustment unit that is located on the magnetic induction support 104 and is located in the magnetic sensing device. On both sides of the 103.
- the adjustment unit can adjust the position of the magnetic sensing device 103 housed therein by changing its position, thereby changing the interval between the magnetic device 102 and the magnetic sensing device 103.
- the adjustment unit may be configured to adjust the interval between the magnetic device 102 and the magnetic sensing device 103 according to the induction of the magnetic field by the magnetic sensing device 103, so that the magnetic sensing device 103 can detect the magnetic device The change in the magnetic field formed by 102.
- the adjustment unit may include an elastic body 105a on a side of the magnetic induction support 104 and abutting against the magnetic sensing device 103; for deforming the elastic body 105a to adjust the magnetic sensing device 103
- the adjusting member 105b at the position, the adjusting member 105b abuts against the other side of the magnetic sensing device 103 and is used together with the elastic body 105a for accommodating the magnetic sensing device 103.
- the adjusting member 105b can change the position of the magnetic sensing device 103 by deforming the elastic body 105a against the other side of the magnetic sensing device 103, thereby adjusting the interval between the magnetic sensing device 103 and the magnetic device 102.
- a partial adjustment amount can be reserved for the distance X between the magnetic device 102 and the magnetic sensing device 103 when the pressure detecting device 10 is designed, and after the components are assembled together.
- the over-adjustment unit adjusts the distance between the magnetic device 102 and the magnetic sensing device 103, and more specifically, the movement of the magnetic sensing device 103 by the axial movement of the adjusting member 105b along the magnetic sensing support 104, thereby deforming the elastic body 105a. To control the distance X between the magnetic device 102 and the magnetic sensing device 103 to ensure the consistency of the initial state of each active pen.
- the elastic body 105a may be provided in an "L" shape, and the elastic body 105a may be placed in the groove of the magnetic induction support 104, so that the magnetic sensing device 103 can be placed in the recess of the elastic body 105a.
- the magnetic sensing device 103 is moved toward the magnetic device 102 by the regulating member 105b, thereby causing the elastic body 105a to be compressively deformed, thereby changing the position of the magnetic member 103, so that the distance X between the magnetic sensing device 103 and the magnetic device 102 becomes small.
- the distance between the magnetic sensing device 103 and the magnetic device 102 can be adjusted according to the magnetic field strength sensed by the magnetic sensing device 103 after the active pen is assembled and before the active pen is used. .
- the adjustment unit may be stopped from adjusting the position of the magnetic sensing device 103, thereby fixing the position of the magnetic sensing device 103 and the adjustment unit.
- the magnetic field change formed by the magnetic element 102 is sensed by the positionally fixed magnetic sensing device 103 (i.e., the magnetic field change formed by the magnetic element due to the expansion and/or deflection of the elastic member 101).
- the predetermined value of the magnetic field strength can be arbitrarily set by a person skilled in the art according to the sensitivity requirement of the active pen.
- the adjustment unit capable of adjusting the interval between the magnetic device 102 and the magnetic sensing device 103 is disposed in the magnetic pressure detecting device, the accuracy of each part and the assembly tolerance in the pressure detecting device are reduced, and the movement of the adjusting unit is The spacing between the magnetic device 102 and the magnetic sensing device 103 is controlled such that the initial state of each active pen can be kept consistent.
- FIG. 3 illustrates an example structure of an active pen according to an embodiment of the present application, the active pen 1 including: a pen tip assembly 20; and a pressure detecting device 10 coupled to the pen tip assembly 20.
- the pressure detecting device 10 is configured to detect the pressure experienced by the tip assembly 20 of the active pen.
- the nib assembly 20 can include a nib and a nib sleeve, wherein the nib is nested within the nib sleeve and the nib sleeve is coupled to the resilient member 101 (eg, a resilient member).
- the resilient member 101 eg, a resilient member
- the pressure detecting device 10 may include: a resilient member 101 having one end connected to the tip assembly of the active pen; and the magnetic device 102 moving with the deformation of the elastic member 101, the magnetic device being fixed to the elastic member 101 a magnetic sensing device 103 spaced apart from the magnetic device 102 for sensing a magnetic field around the magnetic device 102 and converting the magnetic field into an electrical signal to determine a pressure applied to the refill of the active pen based on the electrical signal; and a magnetic sensing support 104, connected to the elastic component 101, and for supporting the magnetic sensing device 103, wherein the magnetic sensing support 104 has a step structure T on a side close to the magnetic device 102, and in a case where the pressure received by the nib assembly is greater than a predetermined value, The step structure T blocks the elastic component 101 from deforming.
- the deformation of the elastic component 101 includes axial expansion and/or deflection of the elastic component.
- the elastic component 101 includes an elastic support ring and an elastic member.
- the pressure detecting device 10 in the active pen may further include: an adjusting unit for adjusting a spacing between the magnetic device and the magnetic sensing device, the adjusting unit being located on the magnetic sensing support.
- the adjustment unit can be located, for example, on the magnetic induction support 104 and on both sides of the magnetic sensing device 103, the adjustment unit adjusting the position of the magnetic sensing device 103 accommodated therein by changing its position, thereby The interval (distance X) between the magnetic device 102 and the magnetic sensing device 103 is changed.
- the adjustment unit may include an elastic body 105a on the magnetic induction support 104 and abutting against one side of the magnetic sensing device 103, and a deformation mechanism for deforming the elastic body 105a to adjust the magnetic feeling
- the adjustment member 105b of the position of the device the adjustment member may abut against the other side of the magnetic sensing device 103 and be used together with the elastic body 105a for accommodating the magnetic sensing device 103 so as to be abutted against the other side of the magnetic sensing device 103
- the elastomer 105a is deformed to change the position of the magnetic sensing device 103 to adjust the spacing between the magnetic device 102 and the magnetic sensing device 103.
- the pressure detecting device 10 in the active pen may further include: a processing circuit 106 coupled to the magnetic sensing component 103, the processing circuit 106 being configured to receive an electrical signal representing the magnetic field change from the magnetic sensing component 103, And determining the pressure experienced by the nib assembly based on the electrical signal.
- the magnetic sensing device 103 is configured as a magnetic field measuring sensor for sensing the magnetic field strength of a magnetic field around the magnetic device 102, the processing circuit 106 being configured to receive a voltage representing a change in magnetic field strength from the magnetic field measuring sensor Signal, and based on the voltage signal, determines the pressure experienced by the nib assembly.
- the magnetic sensing device 103 is configured as an inductive device that senses a magnetic field around the magnetic device 102 by sensing a change in inductance value
- the processing circuit 106 being configured to receive an inductance representative of the change in the magnetic field from the inductive device The value changes the signal, and the pressure received by the pen tip is determined based on the inductance value change signal.
- the pressure detecting device for an active pen according to the present application and the active pen have at least one of the following beneficial effects: the anti-drop ability of the active pen is enhanced; the accuracy of each part in the pressure detecting device and the assembly tolerance requirement can be reduced, and each Only the consistency of the initial state of the pen; the reduction of processing accuracy requirements, reducing production costs.
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Abstract
一种用于主动笔（1）的压力检测装置（10）以及主动笔（1）。该压力检测装置（10）包括：弹性组件（101），其一端连接至主动笔（1）的笔尖；随弹性组件（101）的形变而移动的磁性器件（102），磁性器件（102）设置于弹性组件（101）中；用于感应磁性器件（102）周围的磁场并将磁场转换为电信号以基于电信号确定主动笔（1）的笔芯受到的压力的磁感器件（103），磁感器件（103）与磁性器件（102）间隔设置；以及磁感支撑件（104），与弹性组件（101）连接，且用于支撑磁感器件（103），其中，磁感支撑件（104）在靠近磁性器件（102）的一侧具有台阶结构（T），在笔尖组件（20）受到的压力大于预定值的情况下，该台阶结构（T）阻扰弹性组件（101）形变。该用于主动笔（1）的压力检测装置（10）以及主动笔（1）能够提高主动笔（1）的抗跌落能力。
Description
本申请涉及触控技术领域，尤其涉及一种压力检测装置及主动笔。
随着触控技术的发展，越来越多的移动终端采用触控方式进行人机交互。主动笔是进行人机交互时使用的常用工具，目前的主动笔的工作过程是基于在书写的时候，电子设备的屏幕会向笔尖施加一定的压力，由主动笔内部的压力检测装置接收压力并将接收到的压力信号经过处理后，再通过传导部件、经由笔尖发送至电子设备的屏幕并与屏幕端的电容进行耦合，从而在电子设备的触摸屏幕上呈现出书写的内容。
然而在现有技术中，主动笔的笔尖受到的冲击力会直接传递到压力传感器上，使得主动笔在下落的情况下压力传感器被破坏的几率增加。此外，现有的用于主动笔的压力传感器，其结构比较复杂，对制造精度和组装公差要求较高。
因此，期望有一种能够克服上述技术问题至少其中之一的用于主动笔的压力检测装置及主动笔。
发明内容
在下文中给出了关于本申请的简要概述，以便提供关于本申请的某些方面的基本理解。应当理解，这个概述并不是关于本申请的穷举性概述。它并不
意图确定本申请的关键或重要部分，也不意图限定本申请的范围。其目的仅仅是以简化的形式给出某些概念，以此作为稍后论述的更详细描述的前序。
鉴于现有技术的上述缺陷，本申请的目的之一是提供一种用于主动笔的压力检测装置以及主动笔，以至少克服现有技术中的缺陷。
本申请的一个实施例提供了一种用于主动笔的压力检测装置，包括：弹性组件，其一端连接至所述主动笔的笔尖组件；随所述弹性组件的形变而移动的磁性器件，磁性器件设置于所述弹性组件中；用于感应所述磁性器件周围的磁场并将所述磁场转换为电信号以基于所述电信号确定所述主动笔的笔芯受到的压力的磁感器件，所述磁感器件与所述磁性器件间隔设置；以及磁感支撑件，与所述弹性组件连接，且用于支撑所述磁感器件，其中，所述磁感支撑件在靠近所述磁性器件的一侧具有台阶结构，在所述笔尖组件受到的压力大于预定值的情况下，所述台阶结构阻扰所述弹性组件形变。
根据本申请的一个实施例，弹性组件的形变包括所述弹性组件的伸缩和/或偏转。
例如，弹性组件可以包括：弹性支撑环以及与所述弹性支撑环连接的弹性部件。
根据本申请的另一个实施例，所述压力检测装置还包括：用于调整所述磁性器件与所述磁感器件之间的间隔的调节单元，所述调节单元位于所述磁感支撑件上。
例如，所述调节单元位于所述磁感器件的两侧。
例如，所述调节单元包括：弹性体，位于所述磁感支撑件上并且抵靠所述磁感器件的一侧；以及用于使所述弹性体形变来调节磁感器件的位置的调节
件，所述调节件抵靠所述磁感器件的另一侧并且与所述弹性体一起用于容置所述磁感器件。
根据本申请的又一个实施例，压力检测装置还包括：处理电路，与所述磁感器件电连接，所述处理电路被配置为从所述磁感器件接收表示所述磁场变化的电信号，并且基于所述电信号确定所述笔尖组件受到的压力。
例如，所述磁感器件包括与所述处理电路电连接的霍尔器件。
例如，所述磁感器件包括通过感应电感值的变化来感应所述磁性器件周围的磁场的电感装置，所述电感装置与所述处理电路电连接。
本申请的另一个实施例还提供了一种用于电子设备的主动笔，包括：笔尖组件；以及如上所述的压力检测装置，用于检测所述笔尖组件所受的压力。
根据本申请的用于主动笔的压力检测装置以及主动笔具有至少以下有益技术效果：由于压力检测装置中的磁感支撑件具有台阶结构，能够在主动笔下落时防止弹性组件的过度形变，增强了主动笔的抗跌落能力。
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1示出了根据本申请实施例的用于主动笔的压力检测装置的一种示例性结构。
图2示出了根据本申请的压力检测装置的另一种示例性结构。
图3示出了根据本申请实施例的主动笔的一种示例性结构。
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明部分实施例进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
图1示出了根据本申请实施例的用于主动笔的磁感压力检测装置的一种示例性结构。在本申请中，压力检测装置10被配置为通过磁感应方式确定所述主动笔的笔尖组件受到的压力，从而基于检测到的压力使得通过笔尖组件书写的内容能够呈现在与所述主动笔对应的电子设备的显示器上。
如图1所示，用于主动笔的压力检测装置10可以包括：弹性组件101，其一端连接至主动笔的笔尖组件；随弹性组件101的形变而移动的磁性器件102，磁性器件被固定至弹性组件101；磁感器件103，与磁性器件102间隔放置，用于感应磁性器件102周围的磁场并将磁场转换为电信号以基于所述电信号确定主动笔的笔芯受到的压力；以及磁感支撑件104，与弹性组件101连接，且用于支撑磁感器件103，其中，磁感支撑件104在靠近磁性器件102的一侧具有台阶结构T，在笔尖组件受到的压力大于预定值的情况下，台阶结构T阻扰弹性组件101形变。
根据本申请的实施例，弹性组件101的一端连接至主动笔的笔尖组件，并且在笔尖组件受到压力的情况下发生形变。例如，弹性组件101可以包括弹簧，更具体地，例如，弹性组件101可以包括弹性支撑环和与该弹性支撑环连接的弹性部件(例如弹簧，但不限于此)。
根据本申请的实施例，例如，笔尖组件可以包括笔尖和套接在笔尖外的
笔尖套，但是本申请不限于此，例如笔尖组件也可以仅包括笔尖。此外，弹性组件的一端例如可以与笔尖组件的笔尖套连接。
磁性器件102可以是例如磁铁、磁体等能够形成磁场的任何磁性器件。例如，磁性器件102可以固定在弹性组件101中间的孔内，例如可以将磁性器件102焊接到弹性组件101的、与笔尖组件(例如笔尖套)连接的一端，从而在弹性组件101由于受到来自笔尖组件的压力而发生形变时，磁性器件102随着弹性组件101的形变而移动、从而改变位置，并且随着磁性器件102的位置变化，其所形成的磁场也将发生变化。
根据本申请的实施例，磁感器件103与磁性器件102间隔开放置，用于感测磁性器件102形成的磁场以及磁场变化。当磁性器件由于弹性组件101发生形变而移动时，磁感器件103可以感测到磁性器件102形成的磁场发生变化。
根据本申请的实施例的磁感器件103可以是能够测量磁场强度和/或磁场方向的任何磁感器件，例如霍尔(Hall)元件，各向异性磁电阻(Anisotropic Magnetoresistance，AMR)元件、电感器等。磁感器件103可以感测由于弹性组件101的形变(例如，包括但不限于弹性组件的轴向伸缩、偏转)导致的磁场变化。
根据本申请，弹性组件101发生的形变可以包括沿弹性组件101轴向方向的压缩和伸展。例如，当笔尖组件受到的压力变大时，弹性组件101会发生压缩形变，使得固定在弹性组件101中间的孔内的磁性器件102向磁感器件103靠近，从而磁感器件103感受到的磁性器件102形成的磁场的磁场强度将增大。反之，当笔尖组件受到的压力减小时，弹性组件101的形变会减小，使得固定在弹性组件101中间的孔内的磁性器件102远离磁感器件103，从而磁感器件
103感受到的磁性器件形成的磁场的磁场强度将减小。
弹性组件101发生的形变还可以包括沿弹性组件101轴向方向发生的偏转。例如，弹性组件101可在笔尖组件的压力推动下，沿着图1所示的A点发生偏转，使磁感器件103感应到的磁场发生变化。
根据本申请的实施例，磁感支撑件104可以例如通过套接在弹性组件101内而与弹性组件101连接，例如可以将弹性组件101套接在磁感支撑件104上。磁感支撑件104可以由例如塑料、橡胶等绝缘材料制成。例如，可以通过将磁感器件103放置在磁感支撑件104的表面上设置的凹槽内，来容置并固定磁感器件103。
虽然以上示出了通过将磁感器件103放置在磁感支撑件104的凹槽内来固定磁感器件103，但是本申请不限于此。例如，也可以通过在弹性组件101和磁感器件103之间放置固定板材来与磁感支撑件104一起容置并固定磁感器件103。
根据本申请磁感支撑件103可以在靠近磁性器件的一侧具有台阶结构T，在笔尖组件受到的压力大于预定值的情况下，弹性组件101通过例如抵靠所述台阶结构T而停止形变。
例如，如图1所示，当主动笔的笔尖组件垂直下落时，弹性组件101在受到笔尖组件的冲击力的情况下，沿A点发生形变，当弹性组件101上的B点接触到磁感支撑件104的台阶C点时，停止形变。从而，能够防止弹性组件101过度形变而发生损坏，增强了主动笔的抗跌落能力。
根据本申请的一个实施例，压力检测装置10还可以包括：处理电路(未示出)，与磁感器件103电连接，处理电路被配置为从磁感器件103接收表示
磁场变化的电信号，并且基于电信号确定笔尖组件受到的压力。
根据本申请的一个实施例，磁感器件103可以包括与所述处理电路电连接的霍尔器件。
在磁感器件103被配置为用于感应磁性器件102周围的磁场的磁场强度的霍尔器件的情况下，处理电路可以被配置为从磁场测量传感器接收表示磁场强度的变化的电压信号，并且基于所述电压信号确定所述笔尖组件受到的压力。更具体地，由于磁性器件102形成的空间磁场不是均匀磁场，磁性器件102的移动会引起磁场测量传感器所处区域的磁场强度发生变化，从而改变了磁场测量传感器的输出电压，处理电路通过检测磁场测量传感器的输出电压，从而可以间接识别出笔尖组件受到的压力。
根据本申请的另一个实施例，磁感器件103可以包括通过感应电感值的变化来感应磁性器件103周围的磁场的电感装置，该电感装置与处理电路电连接。
在磁感器件103被配置为通过感应电感值变化来感应所述磁性器件周围的磁场的电感装置的情况下，处理电路被配置为从电感装置接收表示磁场变化的电感值变化信号，并且基于电感值变化信号确定笔尖受到的压力。更具体地，因为电感装置中电感器的感值与其内部磁通量有密切关系，当磁性器件102由于弹性组件101的形变发生微小的移动时，磁性器件102周围的磁场会使电感器的内部磁通量发生剧烈变化，从而导致电感量发生改变。处理电路通过获得电感器的电感值变化量就能得知磁性器件的位置，从而确定笔尖组件受到的压力。
以上描述了处理电路对于接收到的表示压力的电信号的处理示例，但本
申请不限于此。当磁感器件为能够感测磁场的其他器件时，处理电路也可以基于磁感器件的感测对于接收到的表示压力的电信号的进行相应的处理(例如分析笔尖组件受到的压力的变化等)以确定笔尖组受到的压力，其具体处理方式是本领域技术人员可以预见的，在此不再赘述。
根据本申请的一个实施例，压力检测装置10还可以包括：用于调整磁性器件与磁感器件之间的间隔的调节单元，该调节单元位于磁感支撑件上。
图2示出了根据本申请的压力检测装置的另一种示例性结构。
除了包括图1中的弹性组件101、磁性器件102、磁感器件103和磁感支撑件104之外，压力检测装置还包括调节单元，该调节单元位于磁感支撑件104上并且位于磁感器件103的两侧。调节单元可以通过改变其位置对容置在其中的磁感器件103的位置进行调整，从而改变磁性器件102与磁感器件103之间的间隔。根据本申请的实施例，调节单元可以被配置为根据磁感器件103对于磁场的感应来对磁性器件102与磁感器件103之间的间隔进行调整，以使得磁感器件103能够检测由磁性器件102形成的磁场的变化。
更具体地，如图2所示，调节单元可以包括：弹性体105a，位于磁感支撑件104上并且抵靠磁感器件103的一侧；用于使弹性体105a形变来调节磁感器件103的位置的调节件105b，调节件105b抵靠磁感器件103的另一侧并且与弹性体105a一起用于容置磁感器件103。例如，调节件105b可以通过抵靠磁感器件103的另一侧使弹性体105a形变来改变位于磁感器件103的位置，从而调整磁感器件103与磁性器件102之间的间隔。
根据本申请，可以在设计压力检测装置10时，为磁性器件102和磁感器件103之间的距离X预留部分调节量，在将各个部件装配在一起之后，可以通
过调节单元对磁性器件102与磁感器件103之间的距离进行调节，更具体地，通过调节件105b沿磁感支撑件104的轴向移动推动磁感器件103移动、从而使弹性体105a形变，来控制磁性器件102与磁感器件103之间的距离X，以保证每只主动笔的初始状态的一致。
如图2所示，弹性体105a可以设置为“L”型，并且弹性体105a可以被放置磁感支撑件104的凹槽内，从而可以将磁感器件103放置在弹性体105a的凹处，通过调节件105b将磁感器件103向靠近磁性器件102的方向移动，从而使得弹性体105a压缩形变，从而改变磁性元件103的位置，使得磁感器件103与磁性器件102之间的距离X变小。
根据本申请的一个实施例，在主动笔被装配好之后且在主动笔使用之前，可以根据磁感器件103感测到的磁场强度，对磁感器件103与磁性器件102之间的距离进行调整。例如，当磁感器件103感测到的磁场强度达到磁场强度预定值以上，可以使调节单元停止对于磁感器件103位置的调整，从而将磁感器件103和调节单元的位置固定。在使用主动笔时，通过位置固定的磁感器件103感测磁性元件102形成的磁场变化(即，由于弹性组件101的伸缩和/或偏转导致的、磁性元件形成的磁场变化)。在本申请中，磁场强度预定值可以由本领域技术人员根据主动笔的灵敏度要求而任意设置。
由于在磁感压力检测装置中配置了能够调节磁性器件102与磁感器件103之间间隔的调节单元，因此降低了压力检测装置内的各个零件精度和装配公差要求，并且通过调节单元的移动来控制磁性器件102与磁感器件103之间的间隔，使得每只主动笔的初始状态能够保持一致性。
以上结合附图描述了根据本申请实施例的压力检测装置。实际上，本申
请还涉及一种主动笔，其可以包括如上所述的根据本申请各个实施例的压力检测装置，并因此可以获得相应的技术益处。
图3示出了根据本申请实施例的主动笔的示例结构，主动笔1包括：笔尖组件20；压力检测装置10，与笔尖组件20耦接。该压力检测装置10被配置为检测主动笔的笔尖组件20受到的压力。
根据本申请的一个实施例，笔尖组件20可以包括：笔尖和笔尖套，其中，笔尖套在笔尖套内，笔尖套与弹性组件101(例如弹性零件)连接在一起。
根据本申请的一个实施例，压力检测装置10可以包括：弹性组件101，其一端连接至主动笔的笔尖组件；随弹性组件101的形变而移动的磁性器件102，磁性器件被固定至弹性组件101；磁感器件103，与磁性器件102间隔放置，用于感应磁性器件102周围的磁场并将磁场转换为电信号以基于所述电信号确定主动笔的笔芯受到的压力；以及磁感支撑件104，与弹性组件101连接，且用于支撑磁感器件103，其中，磁感支撑件104在靠近磁性器件102的一侧具有台阶结构T，在笔尖组件受到的压力大于预定值的情况下，台阶结构T阻扰弹性组件101形变。
例如，弹性组件101的形变包括弹性组件的轴向伸缩和/或偏转。例如，弹性组件101包括弹性支撑环和弹性部件。
根据本申请的实施例，主动笔中的压力检测装置10还可以包括：用于调整磁性器件与磁感器件之间的间隔的调节单元，该调节单元位于磁感支撑件上。如图3所示，调节单元例如可以位于磁感支撑件104上并且位于磁感器件103的两侧，该调节单元通过改变其位置对容置在其中的磁感器件103的位置进行调整，从而改变磁性器件102与磁感器件103之间的间隔(距离X)。
更具体地，如图3所示，调节单元可以包括：弹性体105a，位于磁感支撑件104上，并且抵靠磁感器件103的一侧；以及用于使弹性体105a形变来调节磁感器件的位置的调节件105b，调节件可以抵靠磁感器件103的另一侧并且与弹性体105a一起用于容置磁感器件103，从而通过抵靠磁感器件103的该另一侧使得弹性体105a形变来改变磁感器件103的位置，以调整磁性器件102与磁感器件103之间的间隔。
根据本申请的实施例，主动笔中的压力检测装置10还可以包括：处理电路106，与磁感组件103耦接，处理电路106被配置为从磁感组件103接收表示磁场变化的电信号，并且基于电信号确定笔尖组件受到的压力。
根据本申请的一个实施例，磁感器件103被配置为用于感应磁性器件102周围的磁场的磁场强度的磁场测量传感器，处理电路106被配置为从磁场测量传感器接收表示磁场强度的变化的电压信号，并且基于电压信号确定笔尖组件受到的压力。
根据本申请的另一个实施例，磁感器件103被配置为通过感应电感值变化来感应磁性器件102周围的磁场的电感装置，处理电路106被配置为从所述电感装置接收表示磁场变化的电感值变化信号，并且基于电感值变化信号确定笔尖受到的压力。
根据本申请的用于主动笔的压力检测装置以及主动笔至少具有以下有益技术效果之一：增强了主动笔的抗跌落能力；能够降低压力检测装置内的各个零件精度和装配公差要求，保证每只笔初始状态的一致性；对加工精度要求降低，减少了生产成本。
最后，还需要说明的是，在本申请中，诸如第一和第二等之类的关系术
语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个......”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
尽管上面已经通过本申请的具体实施例的描述对本申请进行了披露，但是，应该理解，本领域技术人员可在所附权利要求的精神和范围内设计对本申请的各种修改、改进或者等同物。这些修改、改进或者等同物也应当被认为包括在本申请所要求保护的范围内。
Claims (10)
- 一种用于主动笔的压力检测装置，其特征在于，包括：弹性组件，其一端连接至所述主动笔的笔尖组件；随所述弹性组件的形变而移动的磁性器件，该磁性器件设置于所述弹性组件上；用于感应所述磁性器件周围的磁场并将所述磁场转换为电信号以基于所述电信号确定所述主动笔的笔芯受到的压力的磁感器件，所述磁感器件与所述磁性器件间隔设置；以及磁感支撑件，与所述弹性组件连接，且用于支撑所述磁感器件，所述磁感支撑件在靠近所述磁性器件的一侧具有台阶结构，在所述笔尖组件受到的压力大于预定值的情况下，所述台阶结构阻扰所述弹性组件形变。
- 如权利要求1所述的压力检测装置，其特征在于，所述弹性组件的形变包括所述弹性组件的伸缩和/或偏转。
- 如权利要求2所述的压力检测装置，其特征在于，所述弹性组件包括：弹性支撑环以及与所述弹性支撑环连接的弹性部件。
- 如权利要求1-3中任一项所述的压力检测装置，其特征在于，所述压力检测装置还包括：用于调整所述磁性器件与所述磁感器件之间的间隔的调节单元，所述调节单元位于所述磁感支撑件上。
- 如权利要求4所述的压力检测装置，其特征在于，所述调节单元位于所述磁感器件的两侧。
- 如权利要求4所述的压力检测装置，其特征在于，所述调节单元包括：弹性体，位于所述磁感支撑件上并且抵靠所述磁感器件的一侧；以及用于使所述弹性体形变来调节磁感器件的位置的调节件，所述调节件抵靠所述磁感器件的另一侧并且与所述弹性体一起用于容置所述磁感器件。
- 如权利要求1-3任一项所述的压力检测装置，其特征在于，还包括：处理电路，与所述磁感器件电连接，所述处理电路被配置为从所述磁感器件接收表示所述磁场变化的电信号，并且基于所述电信号确定所述笔尖组件受到的压力。
- 如权利要求7所述的压力检测装置，其特征在于，所述磁感器件包括与所述处理电路电连接的霍尔器件。
- 如权利要求7所述的压力检测装置，其特征在于，所述磁感器件包括通过感应电感值的变化来感应所述磁性器件周围的磁场的电感装置，所述电感装置与所述处理电路电连接。
- 一种主动笔，其特征在于，包括：笔尖组件；以及用于检测所述笔尖组件所受的压力的压力检测装置，所述压力检测装置为如权利要求1-9中任一项所述的压力检测装置。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4580007A (en) * | 1983-10-14 | 1986-04-01 | Quantel Limited | Stylus devices responsive to pressure changes for use in videographic and like apparatus |
| CN203422715U (zh) * | 2012-09-13 | 2014-02-05 | 株式会社和冠 | 电磁感应方式的位置指示器以及电子墨盒 |
| CN203882279U (zh) * | 2014-05-29 | 2014-10-15 | 昆盈企业股份有限公司 | 具有压力传感器保护结构的笔头组件 |
| CN205068321U (zh) * | 2015-09-18 | 2016-03-02 | 翰硕电子股份有限公司 | 无线触控笔 |
| CN105573526A (zh) * | 2014-10-17 | 2016-05-11 | 致伸科技股份有限公司 | 触控笔 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4580007A (en) * | 1983-10-14 | 1986-04-01 | Quantel Limited | Stylus devices responsive to pressure changes for use in videographic and like apparatus |
| CN203422715U (zh) * | 2012-09-13 | 2014-02-05 | 株式会社和冠 | 电磁感应方式的位置指示器以及电子墨盒 |
| CN203882279U (zh) * | 2014-05-29 | 2014-10-15 | 昆盈企业股份有限公司 | 具有压力传感器保护结构的笔头组件 |
| CN105573526A (zh) * | 2014-10-17 | 2016-05-11 | 致伸科技股份有限公司 | 触控笔 |
| CN205068321U (zh) * | 2015-09-18 | 2016-03-02 | 翰硕电子股份有限公司 | 无线触控笔 |
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