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An ultra-thin optical reflective input device switch module with tooth structure

An optical reflection and input device technology, applied in electrical switches, electrical components, circuits, etc., can solve the problems of high keycap height, unsuitable integration, large size, etc., to achieve low cost, improve production efficiency and quality stability, The effect of precise welding positioning

Active Publication Date: 2018-09-04
MIKOLTA OPTICAL TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the existing technology of the photoelectric keyboard is inherited from the original traditional mechanical keyboard switch module, its keycap height is relatively high and the volume is relatively large, which is more suitable for desktop input devices and is not suitable for integration into notebook computers and small portable devices. on a digital device

Method used

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  • An ultra-thin optical reflective input device switch module with tooth structure
  • An ultra-thin optical reflective input device switch module with tooth structure
  • An ultra-thin optical reflective input device switch module with tooth structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] An ultra-thin reflective photoelectric keyboard switch module with a toothed structure involved in the present invention, the isometric side exploded structure diagram of the specific embodiment 1 is as follows figure 1 As shown, the front view decomposition structure diagram is as follows figure 2 As shown, it consists of a keycap 11, a key shaft 12, a spring 13, an upper fixed shell 14, a lower fixed shell 15, a lowermost PCB board (printed circuit board) 16, an SMD IR tube 17 (SurfaceMounted Devices Infrared Radiation, surface mounted Infrared diodes, or infrared laser diodes), SMDPT tube 18 (Surface Mounted Devices Phototransistor surface mounted phototransistor). The SMD IR tube 17 is a light emitting device in this embodiment. The SMD PT tube 18 is the light receiving device in this embodiment.

[0068]The light emitting device or the light receiving device is fixed horizontally or vertically on the PCB board 16 by buckling.

[0069] When the light-emitting de...

Embodiment 2

[0076] An ultra-thin optical reflective photoelectric keyboard switch module with a toothed structure involved in this embodiment, an optical path channel is formed between the light emitting device and the light receiving device, and the optical path channel can be composed of an optical path switch and a collimating Fresnel It consists of a Err lens and a second refracting prism with a free-form surface.

[0077] The light-emitting device (SMD IR tube 17) and the collimating Fresnel lens are placed vertically, and can be fixed on the PCB board 26 or the upper fixing shell at the bottom of the module with buckles.

[0078] The light receiving device (SMD PT tube 18 ) is horizontally fixed on the PCB board 26 , and the lower fixing shell 25 has a second through hole near the top of the light receiving device (SMD PT tube 18 ).

[0079] The above-mentioned optical path switch includes a rack located under the keycap, and a gear or a cam located on the PCB. By pressing the keyc...

Embodiment 3

[0084] An ultra-thin optical reflective photoelectric keyboard switch module with a toothed structure involved in this embodiment, an optical path channel is formed between the light emitting device and the light receiving device, and the optical path channel can be composed of an optical path switch and a collimating Fresnel Al lens composition.

[0085] The light-emitting device (SMD IR tube 17), the collimating Fresnel lens, and the light-receiving device (SMD PT tube 18) are vertically placed, and can be fixed on the PCB board at the bottom of the module with a buckle 36 or on the upper fixed shell 35.

[0086] The above-mentioned optical path switch includes a rack located under the keycap, and a gear or a cam located on the PCB. By pressing the keycap, the lower rack moves up and down to drive the gear or the cam to rotate radially, so as to realize the conduction and disconnection of the optical path. Wherein, the gear is disc-shaped, and the structural features of th...

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Abstract

The present invention discloses an ultrathin optical reflective input equipment switch module possessing a tooth-shaped structure. The ultrathin optical reflective input equipment switch module possessing the tooth-shaped structure comprises a keycap, a key shaft, a spring, an upper fixing shell, a lower fixing shell and a PCB, and an ultrathin reflective photoelectric keyboard switch module also comprises a light emitting device and a light receiving device. A light path channel is formed between the light emitting device and the light receiving device and comprises a light path switch, and the light path switch comprises a rack located below the keycap and a gear or a cam located on the PCB. By pressing the keycap, the rack located therebelow moves up and down to drive the gear or the cam to do the radial rotary movement, thereby conducting or disconnecting the light path channel. The ultrathin optical reflective input equipment switch module possessing the tooth-shaped structure has the characteristics of being simple in structure, low in cost and low in switch module height, being convenient to assemble, etc., and the height of the ultrathin optical reflective input equipment switch module is only 1 / 3-1 / 4 of the height of a conventional mechanical shaft keyboard.

Description

technical field [0001] The invention relates to the technical field of electronic device input equipment, in particular to an ultra-thin optical reflective input equipment switch module with tooth-like structure. Background technique [0002] The mechanical keyboard is the mainstream of the computer keyboard market at present. Its working principle is that there is a circuit board at the bottom of the keyboard, and more than 100 mechanical axes are fixed on the board. Each axis is an independent switch. By pressing down on the mechanical axis, the signal will be activated. Conducted from the circuit board to the computer. Mechanical keyboards are superior in performance, responsive, and feel good, and are suitable for both office workers and gamers. However, the disadvantages of the pure mechanical axis keyboard switch can be summarized as follows: First, the pure mechanical axis switch uses metal contact shrapnel as contact and non-contact actions to realize the conduction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H13/02H01H13/20
CPCH01H13/02H01H13/20H01H2231/002H01H2239/022
Inventor 郎欢标
Owner MIKOLTA OPTICAL TECH CO
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