CN113615087A - 电子多路力传感器 - Google Patents

电子多路力传感器 Download PDF

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Publication number
CN113615087A
CN113615087A CN202080020326.4A CN202080020326A CN113615087A CN 113615087 A CN113615087 A CN 113615087A CN 202080020326 A CN202080020326 A CN 202080020326A CN 113615087 A CN113615087 A CN 113615087A
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sensor
force sensor
plate
printed circuit
pin
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安德烈·费林
米歇尔·布莱克曼
马蒂亚斯·塞费尔特
凯·布伦塞尔
亚历山大·考尔
圭多·胡佩尔兹
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Kestar Automotive Electric Co ltd
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/14—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators
    • G01L1/142—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors
    • G01L1/144—Measuring force or stress, in general by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators using capacitors with associated circuitry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • G01D5/2403—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance by moving plates, not forming part of the capacitor itself, e.g. shields
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • H03K17/98—Switches controlled by moving an element forming part of the switch using a capacitive movable element having a plurality of control members, e.g. keyboard

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Position Input By Displaying (AREA)

Abstract

本发明描述了一种具有感应栓杆和感应板的电子多路力传感器，所述感应栓杆可以从其中立位置在至少两个操作方向上进行调节，当取消操作力时，所述感应栓杆再次回到其中立位置，感应板连接到感应栓杆，并且感应板通过感应栓杆的调节相对于印刷电路板是可偏转的，感应板具有电测量系统，电测量系统的输出信号取决于感应板的位置，其中感应板一体地连接到多个条形支撑元件，支撑元件各有一个构成为圆孔的末端部，并且其中感应板和支撑元件一体地从金属板自由切割。

Description

电子多路力传感器
技术领域
本发明涉及一种具有感应栓杆和感应板的电子多路力传感器，所述感应栓杆可从其中立位置在至少两个操作方向上进行调节，当取消操作力时，所述感应栓杆移回其中立位置，具有感应板，所述感应板连接到感应栓杆，并且所述感应板通过感应栓杆的调节相对于印刷电路板是可偏转的，其具有电测量系统，测量系统的输出信号取决于感应板的位置。
不直接属于印刷电路板的电子多路力传感器的组件在下文中称为传感器元件。
背景技术
这种类型的多路力传感器尤其作为输入元件应用，例如在机动车辆中的座椅调节开关中。从德国专利申请DE 10 2014 014 021 A1已知了一种电容式多路力传感器形式的检测装置，该申请的全部内容在此通过引用结合到本文件中。DE 10 2014 014 021 A1中描述的多路力传感器具有感应栓杆，感应栓杆刚性地连接到壳体的上部。在壳体的内部感应栓杆与金属或金属化板连接。当感应栓杆偏转时，所述金属或金属化板同时相对于在印刷电路板上的金属化表面偏转，从而使由所述金属或金属化板和表面的排列形成的电容器的电容值随着感应栓杆的偏转而变化。由于壳体的上部必须同时发生弹性变形才能使感应栓杆偏转，因此多路力传感器是非常坚硬的，这对于诸如座椅调节开关的一些应用是非常理想的。
根据文献DE 10 2014 014 021 A1设计的多路力传感器的传感器元件可以有利地完全或大部分地作为注塑件制造，在其中至少壳体和感应栓杆一体地由塑料组成。传感器元件的设计也可以完全地由金属制成，但由于壳体脱模的困难，使制造成本相对较高。对于一些应用，特别是在机动车辆中，对于壳体的相对大的空间需求也是不利的。
本发明的目的是创建一种通用的、特别是简单、廉价并且紧凑的电子多路力传感器，其具有完全由金属制成的简单、廉价并且紧凑的传感器元件。
发明内容
根据本发明，该目的通过以下方式实现：感应板一体地与多个条状支撑元件连接，条状支撑元件各具有构造为孔眼的末端部，并且感应板和支撑元件一体地从金属板自由切割。
感应板和条形支撑板元件可以优选地通过冲压工艺从单块、优选为矩形或特别是正方形的金属板中自由切割。
在条形支撑元件之间保留有一个近似四叶草形的感应板，所述感应板带有四个成对彼此相对的感应叶片。
与感应板一体地连接的条形支撑元件可以使感应板特别简单的布置，或者在与印刷电路板相对的安装位置处或者优选地直接在印刷电路板上。
支撑元件用作用于紧固感应板的固定元件并且用于精确定位感应板的定心元件。因此，支撑元件的末端部形成旋紧孔眼或定心孔眼，其中插入有螺栓或定心销。
当至少两个支撑元件被设计为具有旋紧孔眼的固定元件时，是有利的。当作为定心元件提供的支撑元件时定心孔眼被设计为长孔，则也是有利的。
通过将感应板与垂直突出的感应栓杆中心的连接创建一个完整的传感器元件。由于其没有任何诸如壳体的难以脱模的部件，传感器元件可以以简单且廉价的方式完全地由金属制成。金属的制成有利于多路力传感器的特别刚性的制成，同时具有简单的结构。传感器元件可以通过其支撑元件直接与印刷电路板连接。用于检测感应板偏转的电子元件设置在印刷电路板上。以这种方式形成的测量系统可以优选地由布置在印刷电路板上的多个导体表面组成，所述导体表面与感应板的感应叶片形成电容器，可以检测其电容和电容变化以确定感应板的调节。除了获取电容值之外，距离的变化也可以通过其他测量原理(例如通过光学方法)来确定。
感应栓杆的偏转导致感应板的感应叶片相对于支撑元件倾斜并且因此导致感应叶片与布置在电路板上的导体表面之间的距离的增大或减小。距离变化的大小是对所施加力的度量，力可以通过此处未详细描述的电子设备来确定。
四个感应叶片的布置确保仅用一个传感器元件就可以检测至少四个操作方向。
附图说明
下面将参考附图示出和解释本发明的示例性实施例。唯一的附图显示了根据本发明设计的电子多路力传感器的分解图。
具体实施方式
所示的多路力传感器根据电容测量原理起作用并且由金属传感器元件10和印刷电路板20组成，特别是在印刷电路板20上施加了多个导体表面21。
传感器元件10具有基本上为圆筒形的感应栓杆11。金属感应板12与感应栓杆11的下端部分连接，当感应栓杆11的纵向轴偏转时，感应板12偏转。
这改变了感应板12相对于布置在印刷电路板20上的导体表面21的位置。感应板12的部分与这些导体表面21组成电容器，其电容值随着感应板12的偏转变化。电容的变化可以通过在此未示出的电子设备评测，以检测感应板12的位置变化，并且从而检测作用在感应栓杆11上的操作力。感应栓杆11的偏转例如可以通过在此未示出的附加的按钮罩手动实现。
传感器元件10的下部由原本为正方形或矩形的金属板制成，从该金属板在其对角线方向自由切割出条形的支撑元件13、14、15、16。支撑元件13、14、15、16的末端部形成旋紧孔眼17和定心孔眼18、19。用于定传感器元件10中心的定心孔眼18、19设计为孔18和长孔19。
与条形支撑元件13、14、15、16一体地连接的金属板的部分形成为近似四叶草形状的感应板12，具有四个彼此成对且面对的感应叶片12a，其中心与垂直突出的圆筒形感应栓杆11牢固地连接。
组装后，传感器元件10设置在印刷电路板20的上侧，旋紧孔眼17通过螺栓连接到旋紧孔23。为了传感器元件10的精确定位，布置在印刷电路板20的上侧的定心销22也被插入到传感器元件10的定心孔眼18、19中。
与由支撑元件13、14、15、16张开的平面相比，感应叶片12a处于传感器元件10的中立位置感应叶片略微向上倾斜地对准,以便能够在所有可能的倾斜方向上进行相对运动。
10 传感器元件
11 感应栓杆
12 感应板
12a 感应叶片
13、14、15、16 支撑元件
17 旋紧孔眼
18、19 定心孔眼
18 孔
19 长孔
20 印刷电路板
21 导体表面
22 定位销
23 旋紧孔

Claims (8)

1.具有一个感应栓杆(11)和一块感应板(12)的电子多路力传感器，所述感应栓杆(11)从其中立位置可在至少两个操作方向上调节，当取消操作力时，所述感应栓杆再次回到其中立位置，
具所述感应板(12)与所述感应栓杆(11)连接，并且所述感应板(12)通过所述感应栓杆(11)的调节相对于一块印刷电路板(20)是可偏转的，所述印刷电路板具有电测量系统，所述电测量系统的输出信号取决于所述感应板(12)的位置，
其特征在于，
所述感应板(12)一体地连接到多个条形支撑元件(13、14、15、16)，所述支撑元件各具有构成为孔眼(17、18、19)的末端部，并且
所述感应板(12)和所述支撑元件(13、14、15、16)一体地从一块金属板中自由切割。
2.根据权利要求1所述的电子多路力传感器，其特征在于，至少两个所述支撑元件(13、14)的末端部构成旋紧孔眼。
3.根据权利要求1所述的电子多路力传感器，其特征在于，至少一个所述支撑元件(15、16)的末端部构成定心孔眼。
4.根据权利要求1所述的电子多路力传感器，其特征在于，所述金属板原本为矩形形状并且所述支撑元件(13、14、15、16)在所述金属板的对角线方向自由切割。
5.根据权利要求2所述的电子多路力传感器，其特征在于，所述旋紧孔眼(17)与印刷电路板(20)旋紧。
6.根据权利要求3所述的电子多路力传感器，其特征在于，所述定心孔眼(18、19)与定心销在所述印刷电路(20)上共同起作用。
7.根据权利要求3所述的电子多路力传感器，其特征在于，所述定心孔眼被制成长孔(19)。
8.根据权利要求1所述的电子多路力传感器，其特征在于，所述印刷电路板(20)具有多个导体表面(21)并且所述感应板(12)的相对于所述印刷电路板(20)的所述导体表面(21)的偏转可以通过电容测量的电子设备进行检测。
CN202080020326.4A 2019-03-13 2020-03-11 电子多路力传感器 Pending CN113615087A (zh)

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DE102019001769.2 2019-03-13
DE102019001769.2A DE102019001769A1 (de) 2019-03-13 2019-03-13 Elektrischer Mehrwegekraftsensor und Sensorelement für den elektrischen Mehrwegekraftsensor
PCT/EP2020/056469 WO2020182864A1 (de) 2019-03-13 2020-03-11 Elektrischer mehrwegekraftsensor

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DE102019001781A1 (de) * 2019-03-13 2020-09-17 Kostal Automobil Elektrik Gmbh & Co. Kg Sitzverstellschalter
WO2023245198A2 (en) * 2022-06-16 2023-12-21 Iona Tech Llc Systems and methods for monitoring and detecting electrostatic discharge (esd) conditions and events

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US20060289286A1 (en) * 2005-06-24 2006-12-28 Siemens Aktiengesellschaft Control element with proximity sensor
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WO2020182864A1 (de) 2020-09-17
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US20210364373A1 (en) 2021-11-25
EP3939164A1 (de) 2022-01-19

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