CN104682941B - The touch key assembly of the metal plate - Google Patents

The touch key assembly of the metal plate Download PDF

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Publication number
CN104682941B
CN104682941B CN201410324352.2A CN201410324352A CN104682941B CN 104682941 B CN104682941 B CN 104682941B CN 201410324352 A CN201410324352 A CN 201410324352A CN 104682941 B CN104682941 B CN 104682941B
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sensor
metal plate
sensing
touch key
key assembly
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CN201410324352.2A
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CN104682941A (en
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姚树林
李玉彬
程艳
陈树波
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广东美的厨房电器制造有限公司
美的集团股份有限公司
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Abstract

本发明公开了种金属板触摸按键组件,包括:金属板,所述金属板的上表面设有感应区域;安装板,所述安装板安装在所述金属板的下表面上且与所述感应区域的位置相对应;以及传感器,所述传感器安装在所述安装板上,所述传感器上设有偶数个感应电极,每个所述感应电极分别设有感应电极引线。 The present invention discloses a metal plate touch key assembly, comprising: a metal plate, the upper surface of the metal plate is provided with sensing area; mounting plate, the mounting plate is mounted on the lower surface of the metal plate and the induction corresponding to the location area; and a sensor, the sensor is mounted on the mounting plate, an even number of sensing electrodes provided on the sensor, each of the sensing electrodes provided sensing electrode leads. 根据本发明实施例的金属板触摸按键组件,通过在传感器上设置偶数个感应电极,使得传感器上感应体的个数为偶数个,感应体的数量增多,传感器感应参数的变化更稳定,可消除盲区现象;并且偶数个感应电极可感应偶数个感应区域内由噪音引起的参数变化,可利用参数的对称性抑制噪音,达到有效地稳定静态工作点,可适用于环境更恶劣的场合。 The metal plate touch key assembly embodiment of the present invention, by providing an even number of sensor electrodes on the sensor, the sensor senses the number of such body is increased number of an even number, the inductor, the sensor sensing a change of parameters is more stable, can be eliminated blind phenomenon; and an even number of sensing electrodes may be an even number of sensing parameters within the induction region caused by the noise, noise suppression using symmetry parameters, to effectively stabilize the quiescent operating point, applicable to the case where the environment worse.

Description

金属板触摸按键组件 The touch key assembly of the metal plate

技术领域 FIELD

[0001]本发明涉及按键技术领域,更具体地,涉及一种金属板触摸按键组件。 [0001] The present invention relates to a key technology, and more particularly, to a metal plate touch key assembly.

背景技术 Background technique

[0002]市场上具有触摸功能的家用电器,绝大多数为塑料或玻璃等绝缘介质较高的材料构成。 [0002] household appliances on the market have a touch function, such as plastic or glass, the vast majority of high dielectric material. 电容式触摸按键可以使按键和面板融为一体,具有美观大方的特点,克服了机械式按键之间存在间隙的弊端,但是其固有的工作原理决定了其面板不能为金属材料,并且产品在实际应用中由于受温度、湿度或材质的影响,存在按键不可靠等现象。 The capacitive touch panel buttons and button can be integrated, having a nice features, to overcome the drawbacks of the gap between the mechanical keys, but their inherent operating principle can not determine its faceplate is a metallic material, and in actual applications due to temperature, humidity, or materials, unreliable and so the presence of the key. 而金属触摸面板不但美观大方,而且不怕水或有害气体,也不受材料限制,将被越来越多的使用在家电上。 The touch panel and the metal is not only elegant, but not afraid of water or a harmful gas, a material is also not limited to be more and more used in home appliances.

[0003] 某专利中提出了一种触摸按键,其中采用压电陶瓷片作为感应体,导致输出的直流响应差(信号很弱而输出阻抗很高),抗干扰能力差且成本高,同时某些压电材料还需要防潮措施,使用性差。 [0003] In a patent proposes a touch button, wherein piezoelectric ceramic sheet as an induction body, resulting in direct response to the difference output (high output impedance and the signal is weak), anti-interference ability and cost, while a these piezoelectric materials also need moisture protection, use of poor.

[0004] 某专利中提出了一种金属面板的触摸开关,其中采用的原理为电阻屏,但是电阻受温度影响会有参数偏移,并且在金属与传感器紧贴面存在因装配或运算引起对角或部分变形引起电阻变化,尤其对于大面积触摸较为明显,导致感应参数极不准确。 [0004] The patent proposes a touch panel switch of a metal, wherein the principle of resistive screen is employed, but the resistance will be affected by the temperature offset parameter, and the presence of the metal against the surface of the sensor mounting or due to operation corner part or the resistance change caused by deformation, particularly for large-area touch is more obvious, resulting in extremely inaccurate sensed parameters.

[0005] 金属触摸按键的原理绝大部分为通过检测感应区的形变,引起传感器参数的变化。 [0005] Most of the principle of metal touch buttons is detected by sensing the deformation zone, the sensor causes a change in the parameters. 然而随着实际工作环境(温度、湿度、外力引起金属变形)的变化,传感器参数存在偏移, 导致可靠性降低。 However, with the actual operating environment (temperature, humidity, external force metal deformation) changes, there is an offset parameter sensor, resulting in reduced reliability. 金属触摸按键的结构有待改进。 Touch keys metal structure to be improved.

发明内容 SUMMARY

[0006] 本发明旨在至少在一定程度上解决相关技术中的技术问题之一。 [0006] The present invention to solve at least to some extent, one of the technical issues related to technology. 为此,本发明的一个目的在于提出一种感应准确且适用性广的金属板触摸按键组件。 To this end, an object of the present invention is to provide a sensing accuracy and wide applicability of the metal plate touch key assembly.

[0007] 根据本发明实施例的金属板触摸按键组件,包括:金属板,所述金属板的上表面设有感应区域;安装板,所述安装板安装在所述金属板的下表面上且与所述感应区域的位置相对应;以及传感器,所述传感器安装在所述安装板上,所述传感器上设有偶数个感应电极,每个所述感应电极分别设有感应电极引线。 [0007] The metal plate of the embodiment of the touch key assembly according to the present invention, comprising: a metal plate, the upper surface of the metal plate is provided with sensing area; mounting plate, the mounting plate is mounted on the lower surface of the metal plate, and a position corresponding to the sensing region; and a sensor, the sensor is mounted on the mounting plate, an even number of sensing electrodes provided on the sensor, each of the sensing electrodes provided sensing electrode leads.

[0008] 根据本发明实施例的金属板触摸按键组件,通过在传感器上设置偶数个感应电极,使得传感器上感应体的个数为偶数个,与单一传感器相比,感应体的数量增多,传感器感应参数的变化更稳定,可消除盲区现象;并且偶数个感应电极可感应偶数个在感应区域内由噪音(包含温湿度、工作电压、机械变形)引起的参数变化趋于相同,可利用参数的对称性对噪音进行抑制,从而达到有效地稳定静态工作点,受环境影响小,可适用于环境更恶劣的场合。 [0008] The metal plate of the touch key assembly embodiment of the present invention, by providing an even number of sensor electrodes on the sensor, the sensor senses the number of such body is increased number of an even number, in comparison with a single sensor, the inductor, the sensor sensing changes in parameters of a more stable, phenomenon to eliminate blind spots; and even-numbered even-numbered sensing electrodes may be induced by the noise in the sensitive region (including temperature, humidity, operating voltage, mechanical deformation) tends to cause the same parameters, the parameters can be used symmetry noise suppression, so as to achieve effectively stabilize the quiescent point, by the environmental impact of small, suitable for harsh environment more occasions.

[0009] 另外,根据本发明上述实施例的金属板触摸按键组件还可以具有如下附加的技术特征: [0009] Further, according to the above-described embodiment of the metal plate of the present invention, the touch key assembly may also have the following additional technical features:

[0010] 根据本发明的一个实施例,所述感应电极包括两个,每个所述感应电极上分别设有一个独立设置的所述感应电极引线。 [0010] According to an embodiment of the present invention, comprises the two sensing electrodes, the sensing electrodes respectively provided with a separate wire provided on each of the sensing electrodes.

[0011] 根据本发明的一个实施例,两个所述感应电极对称设置。 [0011] According to one embodiment of the present invention, the two sensing electrodes disposed symmetrically.

[0012] 根据本发明的一个实施例,金属板触摸按键组件还包括:地线,所述地线绕设在多个所述感应电极引线外。 [0012] According to an embodiment of the present invention, the metal plate touch key assembly further comprising: a ground line, a plurality of the wound is provided outside the sensing electrode leads.

[0013] 根据本发明的一个实施例,所述感应电极包括四个,四个所述感应电极通过导线相连形成为环形,任意两个相邻的所述感应电极之间的导线设有所述感应电极引线。 [0013] According to one embodiment of the present invention, the sensing electrodes comprises four, the four sensing electrode is formed by a wire connected to an annular wire between any two adjacent ones of the sensing electrodes provided with said sensing electrode lead.

[0014] 根据本发明的一个实施例,每个所述感应电极分别形成为椭圆形,任意两个相邻的所述感应电极的轴线互相垂直。 [0014] In accordance with one embodiment of the present invention, each of the sensing electrodes are formed mutually perpendicular axes of an ellipse, any two adjacent ones of the sensing electrodes.

[0015] 根据本发明的一个实施例,每个所述感应电极分别形成为矩形,四个所述感应电极的轴线互相平行。 [0015] According to one embodiment of the present invention, each of the sensing electrodes are formed in a rectangular shape, the axis of the four sensing electrodes parallel to each other.

[0016] 根据本发明的一个实施例,四个所述感应电极对称设置。 [0016] According to one embodiment of the present invention, the four sensing electrodes disposed symmetrically.

[0017] 根据本发明的一个实施例,金属板触摸按键组件还包括:第一绝缘层,所述第一绝缘层设在所述传感器与所述安装板之间;和第二绝缘层,所述第二绝缘层与所述第一绝缘层相连且包覆所述传感器。 [0017] According to an embodiment of the present invention, the metal plate touch key assembly further comprising: a first insulating layer, the first insulating layer is disposed between the sensor and the mounting plate; and a second insulating layer, the said second insulating layer and the first insulating layer and connected to the sensor cover.

[0018] 根据本发明的一个实施例,所述传感器为应变式、压阻式或压电式传感器。 [0018] According to one embodiment of the present invention, the sensor is a strain gauge, piezoresistive, or piezoelectric sensor.

[0019] 根据本发明的一个实施例,所述安装板为双面胶或固化胶水层。 [0019] According to one embodiment of the present invention, the mounting plate is a solidified layer of glue or double-sided tape.

[0020] 根据本发明的一个实施例,所述双面胶或固化胶水层中间设有一层轻质板材。 [0020] According to one embodiment of the present invention, the double-sided tape or the intermediate layer provided with a layer of light curing adhesive sheet.

附图说明 BRIEF DESCRIPTION

[0021] 图1是根据本发明实施例的金属板触摸按键组件的结构示意图; [0021] FIG. 1 is a diagram showing the structure of a metal plate touch key assembly according to an embodiment of the present invention;

[0022] 图2是根据本发明实施例的金属板触摸按键组件的剖面图; _ [0022] FIG. 2 is a cross-sectional view of a metal plate touch key assembly according to embodiments of the present invention; _

[0023] 图3是根据本发明一个实施例的金属板触摸按键组件的传感器的分布与结构示意图; _ [0023] FIG. 3 is a schematic view of the sensor of the distribution and structure of the metal plate touch key assembly according to one embodiment of the present invention; _

[0024] 图4是根据本发明另一个实施例的金属板触摸按键组件的传感器的结构示意图; [0024] FIG. 4 is a schematic diagram of the structure of the sensor plate touch key assembly according to another embodiment of the present invention;

[0025] 图5是根据本发明又一个实施例的金属板触摸按键组件的传感器的结构示意图。 [0025] FIG. 5 is a schematic structural diagram of a sensor plate according to the touch key assembly of still another embodiment of the present invention.

[0026] 附图标记: [0026] The reference numerals:

[0027] 金属板触摸按键组件100; [0027] The touch key assembly 100 of the metal plate;

[0028] 金属板1;感应区域11; [0028] The metal plate 1; sensing region 11;

[0029] 安装板2; [0029] The mounting plate 2;

[0030] 第一绝缘层3; [0030] The first insulating layer 3;

[0031] 第二绝缘层4; [0031] The second insulating layer 4;

[0032] 传感器5;感应电极51;感应电极引线52; [0032] The sensor 5; sensing electrode 51; sensing electrode lead 52;

[0033]地线6。 [0033] 6 ground.

具体实施方式 Detailed ways

[0034]下面详细描述本发明的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。 [0034] Example embodiments of the present invention is described in detail below, exemplary embodiments of the embodiment shown in the accompanying drawings, wherein same or similar reference numerals designate the same or similar elements or elements having the same or similar functions. 下面通过参考附图描述的实施例是示例性的,旨在用于解释本发明,而不能理解为对本发明的限制。 By following with reference to the embodiments described are exemplary, and are intended for explaining the present invention and should not be construed as limiting the present invention.

[0035]在本发明的描述中,需要理解的是,术语“中心”、“长度”、“宽度”、“厚度”、“上”、 “下,,、“前,,、“后,,、“左,,、“右,,、“顶”、“底,,“内,,、“外,,、“轴向”、“径向”、“周向”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,而不是指示或暗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。 [0035] In the description of the present invention, it will be appreciated that "upper" terms "center", "length", "width", "thickness", "lower ,,," front ,,, ",, orientation or position relationship, "left ,,," right ,,, "top", "bottom ,," ,,, the "outer ,,," axial "," radial "," circumferential "and indicated is a position or location based on the relationship shown in the drawings, for convenience of description only and the present invention is to simplify the description, but does not indicate or imply that the device or element referred to must have a particular orientation, the orientation of a particular configuration and operation, can not be construed as limiting the present invention.

[0036] 此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。 [0036] In addition, the terms "first", "second" are used to indicate or imply relative importance or the number of technical features specified implicitly indicated the purpose of description and should not be understood. 由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。 Thus, there is defined "first", "second" features may be explicitly or implicitly include one or more of the features. 在本发明的描述中,“多个”的含义是两个或两个以上, 除非另有明确具体的限定。 In the description of the present invention, the meaning of the "plurality" is two or more, unless specifically defined otherwise specifically.

[0037] 在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。 [0037] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed" and like terms are to be broadly understood, for example, may be a fixed connection, may be detachable connection, or integrally; may be a mechanical connector may be electrically connected; may be directly connected, can also be connected indirectly through intervening structures, it may be interaction between the two internal communicating elements or two elements. 对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。 Those of ordinary skill in the art, to be understood that the specific meanings in the present invention depending on the circumstances.

[0038] 下面结合附图详细描述根据本发明实施例的金属板触摸按键组件100。 [0038] Next, the metal plate touch key assembly according to embodiments of the present invention 100 is described in detail in conjunction with the accompanying drawings.

[0039] 如图1至图5所示,根据本发明实施例的金属板触摸按键组件100包括金属板1、安装板2以及传感器5。 [0039] As shown in FIG. 1 to FIG. 5, 1, 2, and a sensor mounting plate 5 of the metallic plate 100 comprises a metal plate touch key assembly embodiment of the present invention. 安装板2安装在金属板1的下表面,传感器5安装在安装板2上。 Mounting plate 2 is mounted on the lower surface of the metal plate 1, the sensor 5 is mounted on the mounting plate 2. 金属板1 的上表面设有感应区域11,安装板2与感应区域11的位置相对应。 The upper surface of the metal plate 1 is provided with a sensing area 11, the position of the mounting plate 2 and the sensing region 11, respectively. 传感器5上设有偶数个感应电极51,每个感应电极51分别设有感应电极引线52。 It has an even number of sensor 5 sensing electrodes 51, each of the sensing electrode 51 sensing electrode lead 52 are respectively provided.

[0040] 根据本发明实施例的金属板触摸按键组件1〇〇,通过在传感器5上设置偶数个感应电极51,使得传感器5上感应体的个数为偶数个,与单一传感器5相比,感应体的数量增多, 感应体感应参数的变化更稳定,可消除盲区现象;并且偶数个感应电极51可感应偶数个感应区域11内由噪音(包含温湿度、工作电压、机械变形)引起的参数变化,可利用参数的对称性对噪音进行抑制,从而达到有效地稳定静态工作点,受环境影响小,可适用于如大面积高温、高湿等环境更恶劣的场合。 [0040] The metal plate touch key assembly embodiment of the present invention 1〇〇 embodiment, by providing an even number of sensing electrode 51 on the sensor 5, the sensor 5 so that the number of detected object is an even number, in comparison with a single sensor 5, increased number of inductor, a change in inductor sensed parameters of a more stable, eliminate blind spots phenomenon; and an even number of sensing electrodes 51 may sense an even number of sensing regions 11 by the noise (including temperature, humidity, operating voltage, mechanical deformation) caused by the parameters changes in the parameters of symmetry can be used for noise suppression, so as to effectively stabilize the quiescent point, little affected by environmental impact, as applied to a large area of ​​high temperature, humidity and other environmental worse situations.

[0041]当传感器结构中感应体为单一个体时,需要感应体的体积较大,存在不同点按压时输出的参数变化大的问题(中间大,两边小),因而存在盲区隐患。 [0041] When the sensor inductor structure as a single individual need inductor bulky body, a large output change parameters in the presence of different pressing (intermediate large and small sides), and thus blind spots hidden.

[0042]而根据本发明实施例的金属板触摸按键组件100,感应器上设有偶数个感应体,感应体的数量增多,感应体感应参数的变化更稳定,可消除盲区现象。 [0042] According to the embodiment of the metal plate touch key assembly 100 embodiment of the invention, the number of sensors provided with an even number of inductor, the inductor increase, the variation sensing body parameter sensing a more stable, phenomenon to eliminate blind spots. 同时,感应电极51的体积较小,对按压时的感应更准确,并且偶数个感应电极51相当于对称结构,在感应区域11内由噪音(包含温湿度、工作电压、机械变形)引起的参数变化可趋于相同,利用参数的对称性可对噪音进行抑制,使感应更准确。 Meanwhile, a smaller volume of the induction electrode 51, the induction of pressing more accurate, and the induction electrode 51 corresponds to an even number of symmetrical structure in the sensing area 11 by the noise (including temperature, humidity, operating voltage, mechanical deformation) caused by the parameters It may tend to change the same parameters of symmetry using noise can be suppressed, so that more accurate sensing.

[0043]当感应体为电阻式且是单一个体时,由于电阻受温度等影响会有参数偏移,导致感应体的感应参数受环境因素影响大,感应性能极不稳定。 [0043] When the sensor is a resistive body, and a single individual, since the resistance is affected by temperature and other parameters will be offset, resulting in a large impact sensed parameters detected object by environmental factors, induced very unstable performance.

[0044]当感应体为压电陶瓷且是单一个体时,由于压电陶瓷的原理是基于某些晶体材料的压电效应,导致传感器产生的信号很弱而输出阻抗很高,必须根据传感器的输出要求将微弱的信号经过电压放大或电荷放大(一般是电荷放大),其感应电压值易受电场影响,抗干扰能力差,感应不稳定,并且成本高,实用性差。 [0044] When the sensor is a piezoelectric ceramic material and is a single individual, since the principle is based piezoelectric ceramic piezoelectric effect of certain crystalline materials, results in a signal generated by the sensor output is high impedance and weak, must be based on the sensor output request signal through the weak charge amplification or voltage amplification (typically charge amplification), which is susceptible to electrical fields induced voltage values, anti-interference ability, induced instability, and high cost, poor practicality.

[0045]而根据本发明实施例的金属板触摸按键组件100,感应体为感应电极51且为偶数个,偶数个感应电极51在同一条件下的变化量相同,可消除环境因素所造成的千扰,感应准确性大大提尚,并且感应电极51受温度或电场等的影响小,对按压感应更准确。 [0045] According to the metal plate touch key assembly embodiment of the present invention 100, inductor induction electrode 51 and is an even number, the amount of change even number of sensing electrodes 51 under the same conditions the same, can eliminate environmental factors caused thousands interference, greatly improving the accuracy of the sensor is still, and less affected by the sensing electrodes 51 such as temperature or electric field, for pressing the sensor is more accurate.

[0046]具体地,金属板1可用于装饰和固定传感器5。 [0046] Specifically, the metal plate 1 and the stationary sensor can be used to decorate 5. 金属板1上设有多个感应区域11,每个感应区域11的下方分别设有传感器5。 A plurality of sensing regions on the metal plate 11, below each sensing region 11 are respectively provided with a sensor 5. 传感器5安装在安装板2的下表面上,安装板2是对金属板1和传感器5起连接作用,安装板2可以是双面胶、胶水固化层或者在胶体中间设有一层轻质板材,可对大面积连接起到加强作用,并且方便装配。 Sensor 5 is mounted on the lower surface of the mounting plate 2, the mounting plate 2 is 5 connecting role of the metal plate 1 and the sensor mounting plate 2 may be a double-sided tape, glue or a cured layer with the intermediate layer lightweight panel colloid, It may be connected to serve to reinforce a large area, and easy assembly.

[0047] 金属板触摸按键组件100还可包括第一绝缘层3和第二绝缘层4。 [0047] The metal plate assembly 100 may further include a touch key a first insulating layer 3 and the second insulating layer 4. 第一绝缘层3设在传感器5与安装板2之间,第二绝缘层4与第一绝缘层3相连且包覆传感器5。 A first insulating layer 3 is provided between the sensor 5 and the mounting plate 2, a second insulating layer 4 is connected to the first insulating layer 3 and covers the sensor 5. 安装板2紧贴在金属板1与第一绝缘层3之间。 2 against the mounting plate between the metal plate 1 and the first insulating layer 3. 其中,可以采用粘贴固定,粘贴材料可以是胶水或胶带。 Which can be fixed using adhesive, glue or adhesive material may be adhesive tape.

[0048] 第一绝缘层3用于将传感器5固定在安装板2上,传感器5与第一绝缘层3紧贴,其固定方式为粘贴或高温固化。 [0048] The first insulating layer 3 for the sensor 5 is fixed to the mounting plate 2, the sensor 5 close to the first insulating layer 3, which is fixedly attached, or high temperature cure. 第二绝缘层4用于将传感器5封住,避免受湿度影响,同时起到隔离保护作用,其固定方式可为粘贴或高温固化。 The second insulating layer 4 is sealed to the sensor 5, to avoid the influence of moisture, while protect isolation, which is fixedly curable paste or a high temperature.

[0049] 传感器5紧贴在金属板1的感应区域11的正下方,当感应区域11有微小形变时,传感器5的输出信号可发生变化,传感器5可以是应变式、压阻式、压电式等感应形变的类型。 [0049] The sensor 5 is close to the area directly below the sensor 11 of the metal plate 1, when the sensor 11 by slight deformation of the region, the output signal of the sensor 5 can vary, the sensor 5 may be a strain gauge, piezoresistive, piezoelectric other types of inductive type deformation.

[0050] 传感器5上感应电极51的数量可以根据感应面积的大小进行合理设置。 [0050] The number of sensing electrode 51 on the sensor 5 can be set according to the size of the sensing area. 例如,如图3所示,一个传感器5上可包括两个感应电极51,每个感应电极51上分别设有一个独立设置的感应电极引线52,两个感应电极引线52之间不相连,每个感应电极引线52的一端与感应电极51相连,感应电极引线52的另一端可伸出感应电极51,以与其他部件相连,例如,与微控制器相连。 For example, as shown in FIG. 3, may comprise two sensing electrodes 51 on a sensor 5, on each of the sensing electrodes 51 are respectively provided with a separate sensing electrode lead set 52, is not connected between the two sensing electrodes leads 52, each One end of the sensing electrode 51 sensing electrode lead 52 is connected to the other end of the lead sensing electrode 52 sensing electrode 51 may extend, to connect with other components, e.g., coupled to the microcontroller.

[0051] 感应电极51之间开路设置,可以通过差分电路检测感应电极51输入阻抗的变化, 避免了设备在工作过程中,因外来环境(温度、湿度、挤压)变化引起的局部变形,导致传感器5参数变化,进而引起按键不动作或误动作的可能。 [0051] The open circuit is provided between the induction electrode 51 can be induced by changes in the differential circuit 51 detects the input impedance of the electrode, to avoid local deformation of the device during operation, due to external environment (temperature, humidity, extruded) caused changes leading parameter sensor 5 changes, thereby causing the keys may not operate or malfunction. 抵消了因环境因素引起的共模干扰, 感应准确性大大提高,可适用于感应区域11较小的场合。 Offset by a common mode interference due to environmental factors, and greatly improve the accuracy of sensing, applied to the sensing area 11 are small.

[0052] 有利地,两个感应电极51可对称设置,两个感应电极51可位于传感器5的对称位置上。 [0052] Advantageously, two sensing electrodes 51 may be symmetrically arranged, two sensing electrodes 51 may be located on the symmetrical position sensor 5. 由此,两个感应电极51在同一条件下的变化量可相等,通过差分电路可有效抵消因环境因素所引起的共模干扰,使信噪比提高,感应准确性提高,感应更灵敏。 Accordingly, the amount of change in the two sensing electrodes 51 may be equal under the same conditions, can be effectively offset by the differential circuit common mode interference caused by environmental factors, improve the signal to noise ratio, improve the sensing accuracy of sensor is more sensitive.

[0053] 在如图3所示的示例中,金属板触摸按键组件1〇〇还可包括地线6,地线6绕设在多个感应电极引线52外,多个感应电极51被地线6包围。 [0053] In the example shown in Figure 3, the metal plate may further include a touch key assembly 1〇〇 ground 6 ground wire 6 around the plurality of sensing electrodes disposed on the outer lead 52, the plurality of sensing electrodes 51 are ground 6 surrounded. 由此,可有效降低外界干扰,使信噪比进一步提尚。 This makes it possible to effectively reduce outside interference, the signal to noise ratio further improved yet.

[0054] 当感应区域11的面积较大时,可适当提高感应电极51的数量,例如,如图4和图5所示,在发明的一些实施例中,感应电极S1可包括四个,四个感应电极51通过导线相连形成为环形,具体地,四个感应电极51可通过导线首尾相连形成为环形。 [0054] When the size of the sensing region 11 is large, may be appropriate to increase the number of sensing electrode 51, e.g., FIGS. 4 and 5, in some embodiments of the invention, may include four sensing electrodes S1, tetrakis induction electrode 51 is connected by a wire formed into a ring, in particular, four sensing electrodes 51 may be connected end to end by a wire formed into a ring. 感应电极引线52的数量为四个,任意两个相邻的感应电极51之间的导线设有一个感应电极引线52,感应电极引线52 的一端与两个感应电极51之间的导线相连,感应电极引线52的另一端伸出感应电极51,以与其他部件相连,例如,与微控制器相连。 Number of sensing electrodes 52 is four leads, wires between any two adjacent sensing electrodes 51 is provided with a sensing electrode lead 52 is connected between one end of the induction conductor 52 and the electrode lead two sensing electrodes 51, sensing the other end of the electrode lead 52 extends sensing electrode 51, with the other components connected, e.g., coupled to the microcontroller.

[0055] 四个感应电极51之间采用互联设置,可以通过桥式电路检测感应电极51输入阻抗的变化,避免了设备在工作过程中,因外来环境(温度、湿度、挤压)变化引起的传感器5参数变化,进而引起按键不动作或误动作的可能,抵消了因环境因素引起的共模干扰,感应准确性大大提高。 [0055] The interconnection between the four sensing electrode 51 is provided, can be entered by the change in impedance sensing electrodes detecting bridge circuit 51, the device is avoided during operation, due to external environment (temperature, humidity, extruded) caused by the change in parameter sensor 5 changes, thereby causing the keys may not operate or malfunction, a common mode interference canceled due to environmental factors, and greatly improve the accuracy of sensing. 该结构的传感器5感应面积大,可适用于感应区域11较大的场合。 The configuration of the sensor 5 sensing area, is applicable to the case where a large sensing area 11.

[0056] 有利地,四个感应电极51可对称设置。 [0056] Advantageously, four sensing electrodes 51 may be symmetrically disposed. 四个感应电极51可位于传感器5的对称位置。 Four sensing electrodes 51 may be positioned symmetrically sensor 5. 由此,四个感应电极51在同一条件下的变化量可相等,通过桥式电路可有效抵消因环境因素所引起的工模干扰,使信噪比提高,感应准确性提高,感应更灵敏。 Accordingly, the amount of change in the four sensing electrodes 51 may be equal under the same conditions, can be effectively canceled by the bridge circuit due to environmental factors mold disturbance caused by the improved signal to noise ratio, improve the sensing accuracy of sensor is more sensitive.

[0057]感应电极51的结构可有多种,例如,如图4所示,每个感应电极51分别形成为椭圆形,任意两个相邻的感应电极51的轴线互相垂直,即在传感器5的周向上,任意两个相邻设置的感应电极51相互垂直设置。 Structure [0057] The sensing electrode 51 may have a variety of, for example, as shown, each of the sensing electrodes 51 are formed in mutually perpendicular axes of an ellipse, any two adjacent sensing electrodes 51 4, i.e., in the sensor 5 circumferential direction, any two adjacent sensing electrodes 51 arranged perpendicularly to each other. 其中,当传感器5形成为圆形时,多个感应电极51可沿传感器5的周向间隔开,并且每个感应电极51的轴线与传感器5的径向垂直。 Wherein, when the sensor 5 is formed as a circular shape, the plurality of sensing electrodes 51 may be spaced apart circumferentially sensor 5, and the axis of each sensing electrode 51 of sensor 5 is perpendicular to the radial.

[0058]再例如,如图5所示,每个感应电极51可分别形成为矩形,具体地,传感器5可形成为矩形,每个感应电极51可分别形成为长条矩形,四个感应电极51的轴线互相平行,即四个感应电极51平行且间隔开设置在传感器5上,两个感应电极51邻近传感器5的中部设置,另两个感应电极51分别邻近传感器5边角设置。 [0058] For another example, as shown, each of the sensing electrodes 51 may be respectively formed in a rectangular shape 5, in particular, the sensor 5 may be formed in a rectangular shape, each of the sensing electrodes 51 may be formed as elongated rectangles, four sensing electrode axis 51 parallel to each other, i.e., four sensing electrodes 51 disposed in parallel and spaced apart on the sensor 5, two sensing electrodes 51 disposed adjacent to the middle of the sensor 5, and the other two sensing electrodes 51 are disposed adjacent the corners of the sensor 5.

[0059]根据本发明实施例的金属板触摸按键组件1〇〇,传感器5中的感应电极51可以根据感应区域11大小以开路形式和桥式连接方式存在,使用更简单、灵活,可适用于如应变式、 压阻式、压电式等形变引起的传感器5,传感器5感应参数准确且灵敏。 [0059] and may be in the form of an open bridge connection electrode 51 sensing the presence of a metal plate according to a touch key assembly 1〇〇 embodiment of the present invention, the sensor 5 in accordance with the size of the sensing area 11, the use of more simple, flexible, can be applied to the strain gauge, piezoresistive, piezoelectric, etc. caused by the strain sensor 5, the sensor 5 accurately sensed parameters and sensitive.

[0060]在使用根据本发明实施例的金属板触摸按键组件100时,可按压金属板1的感应区域11,感应区域11发生微小形变,偶数个感应电极51检测到该变形,使输入阻抗发生变化, 通过差分电路或桥式电路检测输入阻抗的变化后传输至微控制器,微控制器再根据信号的变化做相应处理。 [0060] In using the metal plate touch key assembly embodiment of the present invention 100, may be pressed sensing region of the metal plate 1 11, sensing region 11 occurs by slight deformation of the even-numbered sensing electrodes 51 detect this modification, the input impedance of variation, after transmission to the microcontroller via a bridge circuit or a change in the differential input impedance detection circuit, the microcontroller then make corresponding processing according to the change in the signal. . 其中,通过差分电路或桥式电路检测输入阻抗的变化,有效抵消了因环境因素所引起的共模干扰,使信噪比提高,感应准确性提高,感应更灵敏。 Wherein, by the differential circuit or bridge circuit for detecting changes in the input impedance, effectively canceling the common-mode interference caused by environmental factors, improve the signal to noise ratio, improve the sensing accuracy of sensor is more sensitive.

[0061]根据本发明实施例的金属板触摸按键组件1〇〇可应用于吸油烟机等设备,吸油烟机等设备操作灵敏且准确,使用性能好。 [0061] The metal plate of the touch key assembly embodiment of the present invention may be applied to sensitive and accurate 1〇〇 hood and other equipment, and other equipment hood operation and good performance.

[0062]在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。 [0062] In the description of the present specification, reference to the term "one embodiment," "some embodiments", "an example", "a specific example", or "some examples" means that a description of the exemplary embodiment or embodiments described a particular feature, structure, material, or characteristic is included in at least one embodiment of the present invention, embodiments or examples. 在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。 In the present specification, a schematic representation of the above terms must not be the same for the embodiment or exemplary embodiments. 而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。 Furthermore, the particular features, structures, materials, or characteristics described may be in any one or more embodiments or examples combined in suitable manner. 此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。 Furthermore, different embodiments or examples and embodiments or features of different exemplary embodiments without conflicting, those skilled in the art described in this specification can be combined and the combination thereof.

[0063]尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。 [0063] Although the above has been illustrated and described embodiments of the present invention, it is understood that the above embodiments are exemplary and are not to be construed as limiting the present invention, within the scope of the invention to those of ordinary skill in the art It may be variations of the above embodiments, modifications, alternatives, and modifications.

Claims (8)

1. 一种金属板触摸按键组件,其特征在于,包括: 金属板,所述金属板的上表面设有感应区域; 安装板,所述安装板安装在所述金属板的下表面上且与所述感应区域的位置相对应; 以及传感器,所述传感器安装在所述安装板上,所述传感器上设有感应电极,所述感应电极包括四个,每个所述感应电极分别设有感应电极引线,四个所述感应电极通过导线相连形成为环形,任意两个相邻的所述感应电极之间的导线设有所述感应电极引线。 A metal plate touch key assembly comprising: a metal plate, the upper surface of the metal plate is provided with sensing area; mounting plate, the mounting plate is mounted on the lower surface of the metal plate, and the the sensing area corresponding to the position; and a sensor mounted on the mounting plate, the sensing electrodes provided on the sensor, the sensing electrodes comprises four electrodes provided for each of said sensor sensing electrode lead is connected to the four sensing electrode formed in a ring by wires, the wires between any two adjacent ones of the sensing electrodes provided with the sensing electrode leads.
2. 根据权利要求1所述的金属板触摸按键组件,其特征在于,每个所述感应电极分别形成为椭圆形,任意两个相邻的所述感应电极的轴线互相垂直。 2. The touch key assembly of the metal plate according to claim 1, wherein each of the sensing electrodes are formed in an oval shape, any two adjacent ones of the vertical axis of each sensing electrode.
3. 根据权利要求1所述的金属板触摸按键组件,其特征在于,每个所述感应电极分别形成为矩形,四个所述感应电极的轴线互相平行。 The metal plate touch key assembly according to claim 1, wherein each of the sensing electrodes are formed in a rectangular shape, the axis of the four sensing electrodes parallel to each other.
4. 根据权利要求1所述的金属板触摸按键组件,其特征在于,四个所述感应电极对称设置。 The metal plate touch key assembly according to claim 1, characterized in that the four sensing electrodes disposed symmetrically.
5. 根据权利要求1-4中任一项所述的金属板触摸按键组件,其特征在于,还包括: 第一绝缘层,所述第一绝缘层设在所述传感器与所述安装板之间;和第二绝缘层,所述第二绝缘层与所述第一绝缘层相连且包覆所述传感器。 The metal plate touch keypad assembly as claimed in any one of claims 1-4, characterized in that, further comprising: a first insulating layer, a first insulating layer provided on the sensor and the mounting plate of between; and a second insulating layer, the second insulating layer and connected to the first insulating layer and cover the sensor.
6. 根据权利要求1-4中任一项所述的金属板触摸按键组件,其特征在于,所述传感器为应变式、压阻式或压电式传感器。 The metal plate touch key assembly according to any one of claims 1-4, characterized in that the sensor is a strain gauge, piezoresistive, or piezoelectric sensor.
7. 根据权利要求1所述的金属板触摸按键组件,其特征在于,所述安装板为双面胶或固化胶水层。 The metal plate touch key assembly according to claim 1, wherein said mounting plate is double-sided tape or glue layer cured. ^ ^
8. 根据权利要求7所述的金属板触摸按键组件,其特征在于,所述双面胶或固化胶水层中间设有一层轻质板材。 A metal plate according to claim touch key assembly of claim 7, wherein the double-sided tape or the intermediate layer provided with a layer of light curing adhesive sheet.
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