WO2018058846A1 - 光电式机械开关及键盘按键组成 - Google Patents

光电式机械开关及键盘按键组成 Download PDF

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Publication number
WO2018058846A1
WO2018058846A1 PCT/CN2017/000231 CN2017000231W WO2018058846A1 WO 2018058846 A1 WO2018058846 A1 WO 2018058846A1 CN 2017000231 W CN2017000231 W CN 2017000231W WO 2018058846 A1 WO2018058846 A1 WO 2018058846A1
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WIPO (PCT)
Prior art keywords
hammer
photoelectric
bracket
light path
mechanical switch
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PCT/CN2017/000231
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English (en)
French (fr)
Inventor
李建平
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东莞市名键电子科技有限公司
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Application filed by 东莞市名键电子科技有限公司 filed Critical 东莞市名键电子科技有限公司
Priority to US16/075,995 priority Critical patent/US11081300B2/en
Publication of WO2018058846A1 publication Critical patent/WO2018058846A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/84—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H01H13/85—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback characterised by tactile feedback features
    • 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
    • H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
    • H03K17/943—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector using a plurality of optical emitters or detectors, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/022—Miscellaneous with opto-electronic switch

Definitions

  • the invention belongs to the technical field of mechanical keyboard switch buttons.
  • the keyboard keys are generally divided into mechanical contact type and photoelectric switch type, wherein the photoelectric switch type keyboard keys utilize optocoupler technology instead of mechanical contact type structure, which utilizes optical principle and photoelectric coupling technology to form light from the transmitting element and the receiving element.
  • the path, the light blocking member performs the cutting and conducting of the optical path to change the circuit impedance to realize the circuit switch.
  • the photoelectric switch keyboard has a long life, and the touch feel changes little after using for a long time.
  • the present invention is directed to providing a photoelectric mechanical switch having a distinct paragraph touch feeling and sound when pressed, and providing a keyboard key composition which is easier to install and manufacture on the basis of this.
  • the solution of the present invention is: a photoelectric mechanical switch comprising an upper cover, a lower cover, a pressing shaft and a main spring, and the upper cover and the lower cover cooperate to form a hollow receiving cavity, pressing the shaft and the main a spring is located in the accommodating cavity, and the accommodating cavity is adjacent to the main spring and is also provided with a hair
  • the sound and light path mechanism includes a pair of springs, a hammer, a hammer limit guide groove and a guiding bracket, and the guiding bracket is linked with the shaft, and moves up and down with the up and down movement of the shaft;
  • the bracket is provided with a chute; the upper end of the hammer is provided with a rib, and the rib is disposed in the chute to be freely movable along the chute; when the bracket moves up and down, the rib is driven by the limit of the chute
  • the self-rotation of the hammer; the secondary spring is mounted on the upper portion of the ram and stops at the top of the bracket; the ram
  • the light path structure is a light transmission hole provided at a lower end portion of the hammer.
  • the top end of the hammer terminates at the bottom of the secondary spring and the top end of the hammer has no contact with the top of the bracket.
  • the top of the bracket is provided with a through hole, and the top end of the hammer passes through the secondary spring and passes through the through hole.
  • the other side of the hammer corresponding to the rib is provided with a small protrusion
  • the guide groove is correspondingly provided with a groove for sliding the small protrusion
  • a photoelectric mechanical keyboard button composition comprising a photoelectric mechanical switch and a PCB board, the photoelectric mechanical switch comprising an upper cover, a lower cover, a pressing shaft and a main spring, The cover and the lower cover cooperate to form a hollow accommodating cavity, and the pressing shaft and the main spring are located in the accommodating cavity, and the accommodating cavity is further provided with an audible light path mechanism adjacent to the main spring, and the sound emitting path is
  • the mechanism comprises a pair of springs, a hammer, a hammer limit guide groove and a guiding bracket, and the guiding bracket is linked with the pressing shaft, and moves up and down with the up and down movement of the pressing shaft;
  • the bracket is provided with a chute;
  • the upper end portion is provided with a ridge, and the ridge is disposed at an oblique angle
  • the groove can be freely moved along the chute; when the bracket moves up and down, the rib is driven by the limit of the chute to drive the rotation of the ram
  • the illuminator IR and the light receiver PT form a pair of tubes on the PCB
  • the light path structure is a light transmission hole disposed at a lower end of the hammer, and the hammer is placed in the middle of the tube;
  • the hammer descends and rotates so that the through hole opposes the illuminator IR and the light receiver PT to turn on the photoelectric circuit;
  • the pressing is released, the hammer moves up and the through hole rotates to cut the photoelectric circuit.
  • the lower cover is provided with a set of protruding hooks, and the corresponding position of the PCB is provided with a socket matched with the hook, and the photoelectric mechanical switch is fixed on the PCB board through the hook and the socket.
  • the PCB is provided with an anti-collision hole corresponding to the position of the hammer, and the punch can extend into the anti-collision hole when descending.
  • the invention has the following beneficial effects: the independent sounding light path mechanism is adopted, so that when pressing the pressing shaft, the buttoning sound and the button sound can be presented more clearly, and can be realized well.
  • the optical path is turned on and off; in addition, the switching mode of the switch and the PCB board and the PCB board use the chip production process to process the photoelectric circuit, which can greatly improve the processing efficiency. And good product rate, reduce material cost and production cost, and have strong practicability.
  • FIG. 1 is a structural exploded view of a specific embodiment of a keyboard button of the present invention
  • FIG. 2 is a schematic view showing the bottom structure of a keyboard key composition embodiment of the present invention.
  • FIG. 3 is a schematic top view showing a structure of a keyboard button of the present invention.
  • Figure 4 is a schematic view showing the structure of a hammer in the present invention.
  • Figure 5 is a schematic view showing the structure of the pressing shaft and the guiding bracket in the present invention.
  • FIG. 6 is a schematic structural view of a lower cover and a limit guide groove according to the present invention.
  • the invention first protects a photoelectric mechanical switch and a keyboard button based on the switch, both of which are the same technical innovation in the structure of the switch.
  • this innovative photoelectric mechanical switch is included in the main structure.
  • the upper cover 2, the lower cover 3, the pressing shaft 1 and the main spring 4, the upper cover and the lower cover cooperate to form a hollow receiving cavity, and the pressing shaft 1 and the main spring 4 are located in the receiving cavity, and the main spring 4 is used for According to the reset of the axis 1, these are all prior art and will not be described here.
  • the innovation is unique in that the accommodating cavity is provided with an independent sounding light path mechanism adjacent to the main spring. The mechanism can not only realize the on/off function of the light path, but also generate the sound of the button and The sense of paragraph is conducive to improving the user experience.
  • the sound-emitting path mechanism of the present invention comprises a pair of springs 5, a hammer 6, a hammer limit guide 7 and a guide bracket 8, wherein:
  • the guiding bracket 8 is interlocked with the pressing shaft 1, and the guiding bracket 8 can move up and down with the up and down movement of the pressing shaft 1; as shown in FIG. 5, the guiding bracket 8 is provided with a chute 81, and the function of the chute 81 is to guide the bracket The up and down movement is converted into the rotation of the hammer 6, which will be described in detail later;
  • the upper end portion of the hammer 6 is provided with a rib 61.
  • the rib 61 is disposed in the chute 81 to be freely movable along the chute; when the guide bracket 8 moves up and down, the rib 61 is driven by the limit of the chute 81 to drive the ram. Rotating 6 about its own axis;
  • the secondary spring 5 is mounted on the upper portion of the ram 6 at the rib 61 and terminates at the top of the guide bracket 8; the ram 6 and the secondary spring 5 are axially parallel with the main spring 4; the lower end of the ram 6 is placed In the ram limit guiding groove 7, the guiding groove 7 is provided with a groove 71 for the slanting rod 61 to slide in; the role of the secondary spring is to generate a downward pressure so that the ridge of the rushing hammer suddenly bounces when sliding into the groove 71. Make noise.
  • the top end of the ram 6 terminates at the bottom of the sub-spring 5, and the top end of the ram 6 has no contact with the top of the bracket; of course, in the embodiment, the top of the guide bracket is provided with a through hole.
  • the upper end of the hammer is designed to be longer, and the top of the hammer passes through The secondary spring then passes through the through hole at the top of the guide bracket.
  • the lower end portion of the hammer 6 is provided with a light path structure.
  • the light path structure is a light transmission hole provided at a lower end portion of the hammer.
  • the path structure can be designed as a reflective lens or other means according to design requirements.
  • the other side of the hammer 6 corresponding to the rib 61 is provided with a small protrusion 62, and the hammer limit guide groove 7 is correspondingly provided for the small protrusion 62 to slide in.
  • the groove is as shown in FIG.
  • a keyboard key composition based on the above photoelectric mechanical switch, the composition comprising a photoelectric mechanical switch and a PCB board 9, the PCB board 9 being provided with an illuminator IR 10 and a light receiver PT 11
  • the components are disposed on the PCB by a chip process, which facilitates processing and manufacturing, and reduces manufacturing costs.
  • the photoelectric mechanical switch After the photoelectric mechanical switch is independently fabricated, it can be directly mounted on the PCB board 9.
  • the optical path structure of the lower end of the hammer 6 forms an operational relationship with the photoelectric circuit on the corresponding PCB board 9 of the switch, and the hammer 6 Up and down movement and rotation can turn off or turn on the photoelectric circuit composed of the illuminator IR and the light receiver PT to generate a button signal.
  • the illuminator IR and the light receiver PT form a pair-to-tube relationship on the PCB, the light path structure being a light-transmissive aperture 63 disposed at the lower end of the hammer, the hammer being placed in the middle of the tube
  • the hammer descends and rotates so that the through hole opposes the illuminator IR and the light receiver PT to turn on the photoelectric circuit; when the pressing is released, the hammer moves up and the through hole rotates to cut off the photoelectric circuit.
  • the hook 31 has a corresponding position on the PCB, and the optical switch is fixed to the PCB by a hook and a socket.
  • an anti-collision hole 92 is provided corresponding to the position of the hammer 6, and the bottom end of the hammer 6 can extend into the collision hole 92 when descending.

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  • Push-Button Switches (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

一种光电式机械开关，包括上下盖(2,3)、按轴(1)和主弹簧(4)以及由一副弹簧(5)、一冲锤(6)、一冲锤限位导槽(7)和一引导支架(8)构成的发声光路径机构，引导支架与按轴联动；引导支架上设有斜槽(81)；冲锤的上端部设有设置在斜槽内可沿斜槽自由活动的凸条(61)；引导支架上下移动时，凸条受斜槽的限位而驱动冲锤的自身旋转；冲锤的下端部置于冲锤限位导槽内，该冲锤限位导槽上设有用于凸条滑入的凹槽(71)；冲锤的下端部设有发声光路径结构。采用独立的发声光路径机构，使其在按压按轴时能够呈现出更明显干脆的按触段落感和按键声，且能实现很好的光路径通断功能；此外开关和PCB板的插接方式及PCB板使用贴片生产工艺加工光电电路，可大大提升加工效率和良品率，降低材料成本和生产成本，实用性强。

Description

光电式机械开关及键盘按键组成 技术领域
本发明属于机械键盘开关按键技术领域。
背景技术
键盘按键一般分为机械触点式和光电开关式，其中光电开关式键盘按键利用光电耦技术，替代机械触点式结构，其利用光学原理和光电耦合技术，由发射元件和接收元件形成光的通路，阻光件在进行光路的切断与导通以改变电路阻抗实现电路开关。相比于其他键盘，光电开关式键盘按键寿命长，使用长时间之后按键手感变化很小。
但正是因为触点改由光电之变换，致使原有触点开关所具有的按触手感和声音缺失或不易于实现，尤其是目前的光电开关式键盘按键由于仅仅具有一个按轴，在按压时很难产生按触手感和声音，对按键的按触感官不明显，而且在按压时，也没有其他触发的提示。针对该技术缺陷，需要对开关按键进行结构改进，以实现按触手感和声音，且易于实现低成本高效率的工业制造。
发明内容
针对上述问题，本发明旨在提供按压时具有明显段落按触手感和声音的光电式机械开关，并提供一种在此基础上更易于安装制造的键盘按键组成。
为实现该技术目的，本发明的方案是：一种光电式机械开关，包括上盖、下盖、按轴和主弹簧，上盖和下盖相配合形成中空的容置腔，按轴和主弹簧位于所述容置腔内，所述容置腔内毗邻主弹簧还设有发 声光路径机构，所述发声光路径机构包括一副弹簧、一冲锤、一冲锤限位导槽和一引导支架，引导支架与按轴联动，随按轴的上下动作而上下移动；所述支架上设有斜槽；冲锤的上端部设有凸条，该凸条设置在斜槽内可沿斜槽自由活动；支架上下移动时，凸条受斜槽的限位而驱动冲锤的自身旋转；副弹簧安装在冲锤于该凸条的上部并止于所述支架的顶部；冲锤和副弹簧与主弹簧为轴向平行关系；冲锤的下端部置于冲锤限位导槽内，该导槽上设有用于凸条滑入的凹槽；冲锤的下端部设有光路径结构。
作为优选的，所述光路径结构为设置在冲锤下端部的透光孔。
作为优选的，所述冲锤的顶端止于副弹簧的底部，冲锤顶端与支架的顶部无接触。
作为优选的，所述支架的顶部设有通孔，冲锤的顶端穿过副弹簧进而穿过所述通孔。
作为优选的，所述冲锤上与凸条对应的另一侧设有小凸起，所述导槽相应的设有用于该小凸起滑入的凹槽。
为实现该技术目的，本发明的另一方案是：一种光电式机械键盘按键组成，包括光电式机械开关和PCB板，光电式机械开关包括上盖、下盖、按轴和主弹簧，上盖和下盖相配合形成中空的容置腔，按轴和主弹簧位于所述容置腔内，所述容置腔内毗邻主弹簧还设有发声光路径机构，所述发声光路径机构包括一副弹簧、一冲锤、一冲锤限位导槽和一引导支架，引导支架与按轴联动，随按轴的上下动作而上下移动；所述支架上设有斜槽；冲锤的上端部设有凸条，该凸条设置在斜 槽内可沿斜槽自由活动；支架上下移动时，凸条受斜槽的限位而驱动冲锤的自身旋转；副弹簧安装在冲锤于该凸条的上部并止于所述支架的顶部；冲锤的下端部置于冲锤限位导槽内，该导槽上设有用于凸条滑入的凹槽；冲锤的下端部设有光路径结构；PCB板上设有由发光器IR和光接收器PT组成的光电电路；光电式机械开关安装在PCB板上，所述冲锤下端部所设的光路径结构与该开关对应PCB板上的光电电路形成工作关系，冲锤的上下移动及旋转可截止或导通由发光器IR和光接收器PT组成的光电电路。
作为优选的，所述发光器IR和光接收器PT于PCB板上形成对管关系，所述光路径结构为设置在冲锤下端部的透光孔，所述冲锤置于对管中间；当按轴按压下时，冲锤下行并旋转使得通孔对向发光器IR和光接收器PT，使光电电路导通；当松开按压时冲锤上行且通孔旋转使得光电电路截断。
作为优选的，所述下盖上设有一组伸出的挂钩，所述PCB相应的位置设有与所述挂钩匹配的插孔，光电式机械开关通过挂钩和插孔固定在PCB板上。
作为优选的，所述PCB对应于所述冲锤的位置设有防撞孔，冲锤下行时可伸入该防撞孔。
与现有技术相比，本发明具有如下有益效果：采用独立的发声光路径机构，使其在按压按轴时能够呈现出更明显干脆的按触段落感和按键声，且能实现很好的光路径通断功能；此外开关和PCB板的插接方式及PCB板使用贴片生产工艺加工光电电路，可大大提升加工效率 和良品率，降低材料成本和生产成本，实用性强。
附图说明
图1为本发明的键盘按键组成具体实施例的结构爆炸图；
图2为本发明的键盘按键组成具体实施例的底部结构示意图；
图3为本发明的键盘按键组成具体实施例的顶部结构示意图；
图4为本发明中冲锤的结构示意图；
图5为本发明中按轴及引导支架的结构示意图；
图6为本发明中下盖及限位导槽的结构示意图。
其中：1按轴、2上盖、3下盖、4主弹簧、5副弹簧、6冲锤、7冲锤限位导槽、8引导支架、9PCB板、10发光器IR、11光接收器PT、12LED灯珠、13导光块、31挂钩、61凸条、62小凸起、63透光孔、71凹槽、81斜槽、91插孔、92防撞孔。
具体实施方式
下面结合附图和实施例，进一步阐述本发明。在下面的详细描述中，只通过说明的方式描述了本发明的某些示范性实施例。毋庸置疑，本领域的普通技术人员可以认识到，在不偏离本发明的精神和范围的情况下，可以用各种不同的方式对所描述的实施例进行修正。因此，附图和描述在本质上是说明性的，而不是用于限制权利要求的保护范围。
本发明首先保护的是一种光电式机械开关和一种基于该种开关的键盘按键组成，两者在开关的结构上是同一个技术创新。
如图1所示，这种创新的光电式机械开关是在主体结构上包括 上盖2、下盖3、按轴1和主弹簧4，上盖和下盖相配合形成中空的容置腔，按轴1和主弹簧4位于所述容置腔内，主弹簧4用于按轴1的复位，这些都属于现有技术，在此不再赘述。本创新的独特之处主要在于所述容置腔内毗邻主弹簧的旁边还设有独立的发声光路径机构，该机构不但能够实现光路径的通断功能，还能产生出按键的声音和段落感，有利于提高用户体验。如图4、5、6所示的，本发明的发声光路径机构包括一副弹簧5、一冲锤6、一冲锤限位导槽7和一引导支架8，其中：
引导支架8与按轴1联动，引导支架8可随按轴1的上下动作而上下移动；如图5所示的，引导支架8上设有斜槽81，斜槽81的作用是将引导支架的上下移动转换成冲锤6的旋转，这在后面会详细介绍；
冲锤6的上端部设有凸条61，该凸条61设置在斜槽81内可沿斜槽自由活动；引导支架8上下移动时，凸条61受斜槽81的限位而驱动冲锤6的绕自身轴线旋转；
副弹簧5安装在冲锤6于凸条61的上部并止于所述引导支架8的顶部；冲锤6和副弹簧5与主弹簧4为轴向平行关系；冲锤6的下端部置于冲锤限位导槽7内，该导槽7上设有用于凸条61滑入的凹槽71；副弹簧的作用是产生下压力使得冲锤的凸条在滑入凹槽71时突然弹发出声音。在最佳的实施中，冲锤6的顶端止于副弹簧5的底部，冲锤6顶端与支架的顶部无接触；当然也可以在实施例中采用引导支架的顶部设通孔的方案，冲锤上端设计的较长，冲锤的顶端穿过 副弹簧进而穿过所述引导支架顶部的通孔。
冲锤6的下端部设有光路径结构，在最佳的实施例中，所述光路径结构为设置在冲锤下端部的透光孔。当然，为了实现光路径的通断，可以根据设计需要，路径结构可设计为反光镜片或是其他方式。
为了冲锤动作的稳定性，冲锤6上与凸条61对应的另一侧设有小凸起62，所述冲锤限位导槽7相应的设有用于该小凸起62滑入的凹槽，如图6所示出的。
本发明的另一方案是一种基于上述光电式机械开关的键盘按键组成，该组成包括光电式机械开关和PCB板9，该PCB板9上设有由发光器IR 10和光接收器PT 11组成的光电电路，在具体实施例中，通过贴片工艺将上述元器件设置于PCB板上，便于加工制造，降低制造成本。
光电式机械开关独立制作好之后，可直接安装在PCB板9上，所述冲锤6下端部所设的光路径结构与该开关对应PCB板9上的光电电路形成工作关系，冲锤6的上下移动及旋转可截止或导通由发光器IR和光接收器PT组成的光电电路，产生按键信号。在优选的实施例中，发光器IR和光接收器PT于PCB板上形成对管关系，所述光路径结构为设置在冲锤下端部的透光孔63，所述冲锤置于对管中间；当按轴按压下时，冲锤下行并旋转使得通孔对向发光器IR和光接收器PT，使光电电路导通；当松开按压时冲锤上行且通孔旋转使得光电电路截断。
为确保安装的稳定性和安装的便捷性，下盖2上设有一组伸出的 挂钩31，所述PCB相应的位置设有与所述挂钩匹配的插孔91，光电式机械开关通过挂钩和插孔可插拔的固定在PCB板上。
为了防止冲锤6撞击PCB板，保障所述PCB的安全，对应于所述冲锤6的位置设有防撞孔92，冲锤6下行时其底端可伸入该防撞孔92中。
以上显示和描述了本发明的基本原理、主要特征及本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (9)

  1. 一种光电式机械开关，包括上盖(2)、下盖(3)、按轴(1)和主弹簧(4)，上盖和下盖相配合形成中空的容置腔，按轴和主弹簧位于所述容置腔内，其特征在于：所述容置腔内毗邻主弹簧还设有发声光路径机构，所述发声光路径机构包括一副弹簧(5)、一冲锤(6)、一冲锤限位导槽(7)和一引导支架(8)，其中，
    引导支架与按轴联动，随按轴的上下动作而上下移动；所述支架上设有斜槽；
    冲锤的上端部设有凸条，该凸条设置在斜槽内可沿斜槽自由活动；支架上下移动时，凸条受斜槽的限位而驱动冲锤的自身旋转；
    副弹簧安装在冲锤于该凸条的上部并止于所述支架的顶部；冲锤和副弹簧与主弹簧为轴向平行关系；
    冲锤的下端部置于冲锤限位导槽内，该导槽上设有用于凸条滑入的凹槽；冲锤的下端部设有光路径结构。
  2. 根据权利要求1所述的光电式机械开关，其特征在于，所述光路径结构为设置在冲锤下端部的透光孔。
  3. 根据权利要求1所述的光电式机械开关，其特征在于，所述冲锤的顶端止于副弹簧的底部，冲锤顶端与支架的顶部无接触。
  4. 根据权利要求1所述的光电式机械开关，其特征在于，所述支架的顶部设有通孔，冲锤的顶端穿过副弹簧进而穿过所述通孔。
  5. 根据权利要求1至4中任一项所述的光电式机械开关，其特征在于，所述冲锤上与凸条对应的另一侧设有小凸起，所述导槽相应的设有用于该小凸起滑入的凹槽。
  6. 一种光电式机械键盘按键组成，包括光电式机械开关和PCB板，其特征在于：
    光电式机械开关包括上盖(2)、下盖(3)、按轴(1)和主弹簧(4)，上盖和下盖相配合形成中空的容置腔，按轴和主弹簧位于所述容置腔内，所述容置腔内毗邻主弹簧还设有发声光路径机构，所述发声光路径机构包括一副弹簧(5)、一冲锤(6)、一冲锤限位导槽(7)和一引导支架(8)，引导支架与按轴联动，随按轴的上下动作而上下移动；所述支架上设有斜槽；冲锤的上端部设有凸条，该凸条设置在斜槽内可沿斜槽自由活动；支架上下移动时，凸条受斜槽的限位而驱动冲锤的自身旋转；副弹簧安装在冲锤于该凸条的上部并止于所述支架的顶部；冲锤的下端部置于冲锤限位导槽内，该导槽上设有用于凸条滑入的凹槽；冲锤的下端部设有光路径结构；
    PCB板上设有由发光器IR和光接收器PT组成的光电电路；
    光电式机械开关安装在PCB板上，所述冲锤下端部所设的光路径结构与该开关对应PCB板上的光电电路形成工作关系，冲锤的上下移动及旋转可截止或导通由发光器IR和光接收器PT组成的光电电路。
  7. 根据权利要求6所述的光电式机械键盘按键组成，其特征在于，所述发光器IR和光接收器PT于PCB板上形成对管关系，所述光路径结构为设置在冲锤下端部的透光孔，所述冲锤置于对管中间；当按轴按压下时，冲锤下行并旋转使得通孔对向发光器IR和光接收器PT，使光电电路导通；当松开按压时冲锤上行且通孔旋转使得光电电路截断。
  8. 根据权利要求6或7所述的光电式机械键盘按键组成，其特征在于，所述下盖上设有一组伸出的挂钩，所述PCB相应的位置设有与所述挂钩匹配的插孔，光电式机械开关通过挂钩和插孔固定在PCB板上。
  9. 根据权利要求6或7所述的光电式机械键盘按键组成，其特征在于，所述PCB对应于所述冲锤的位置设有防撞孔，冲锤下行时可伸入该防撞孔。
PCT/CN2017/000231 2016-09-30 2017-03-13 光电式机械开关及键盘按键组成 WO2018058846A1 (zh)

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