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Switch module of ultrathin reflective computer input equipment

A technology of input devices and switch modules, applied in the direction of electric switches, circuits, electrical components, etc., can solve the problems of high key height, unsuitable integration, and large volume

Pending Publication Date: 2015-10-28
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 key 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 digital devices. on the device

Method used

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  • Switch module of ultrathin reflective computer input equipment
  • Switch module of ultrathin reflective computer input equipment
  • Switch module of ultrathin reflective computer input equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0177] The switch module of an ultra-thin reflective computer input device related to the present invention, the isometric 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 (Surface Mounted Devices) IR tube (Infrared Radiation infrared) 17 (surface mount infrared diode, or infrared laser diode), SMD PT (Phototransistor phototransistor) 18 (surface mount phototransistor), and SMD LED 19 (surface mount installed light-emitting diodes). The SMD IR tube 17 is a light emitting device. The SMD PT tube 18 is a light receiving device. In this specific implementation one, the cross-sectional view along the A-A direction passing through the center point of the SMD IR tube 17 light-emitting surface and the ...

Embodiment 2

[0183] In the switch module of an ultra-thin reflective computer input device involved in the present invention, the reflective surface on the key shaft can be set as two or more multiple reflective surfaces. The second specific embodiment is an optical path control structure in which the reflective surface on the key shaft is set as two reflective surfaces. It works as Figure 5 and shown in Figure 6. Figure 5 For this specific implementation along figure 1 The cross-sectional view of the D-D direction in the middle, its working state is the state of the button being released and the spring springing up. Fig. 6 (a) and (b) are respectively this specific embodiment along figure 1The cross-section in the direction of D-D and the optical path diagram viewed from the direction of the arrow T indicate that the key is in a depressed state. The control principle of the key switch is: when the key is pressed down by 1.85mm, it emits from the center point P of the SMD IR tube 17. ...

Embodiment 3

[0187] The switch module of an ultra-thin reflective computer input device involved in the present invention can adopt a structure in which a collimating / focusing lens is combined with a reflecting surface. Its optical path is composed of multiple reflective surfaces located on the key shaft 32, multiple reflective surfaces located under the upper fixed shell, and a collimating / focusing lens located at the first through hole or / and the second through hole of the lower fixed shell ,Such as Figure 7 and Figure 8 Described specific embodiment 3 shows. Figure 7 For this specific implementation along figure 1 The cross-sectional view of the D-D direction in the middle shows that the button is in a relaxed state. Figure 8 For this specific implementation along figure 1 The optical path diagram of the section in the D-D direction in the middle, which is the state where the button is pressed down. In this specific embodiment, the reflective surface on the keycap and the key s...

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Abstract

The invention relates to a switch module of ultrathin reflective computer input equipment, and particularly to a push button switch of a computer input keyboard and a push button switch of a computer mouse. The switch module comprises a light transmitting device and a light receiving device. An optical path channel is formed between the light transmitting device and the light receiving device through at least one reflecting surface. The reflecting surface is integrated on a button switch, a button cap or a fixed housing. When the push button is pressed down or released, vertical movement of partial reflecting surface makes the optical path be on or off, thereby triggering on and off of a circuit which is connected with the light receiving device. The invention further discloses a button cap character illuminating system which comprises the components of a single-color LED or multi-color LED illuminating light source which is arranged on a PCB, and an optical device which is arranged on an upper fixing housing for light distribution. The switch module of the ultrathin reflective computer input equipment has advantages of simple structure, low cost, convenient assembly, low height, etc. Furthermore the height of the switch module is only 1 / 3-1 / 4 of that of a traditional mechanical keyboard.

Description

technical field [0001] The invention relates to the technical field of electronic device input equipment, in particular to a switch module of an ultra-thin reflective computer input equipment. Background technique [0002] The mechanical keyboard is the mainstream of the computer keyboard market at present. Its switch principle is as follows: when the key is pressed and released, the metal contact on the mechanical key shaft and the metal shrapnel fixed on the shell perform contact and non-contact actions to realize The conduction and disconnection of the circuit, this mechanical contact structure is prone to fatigue damage, and the shrapnel and contacts are easy to wear, resulting in switch control failure or misoperation control, and the product life is not long enough; second, metal shrapnel and contacts It is easy to be affected by the use environment to cause oxidation and aging, resulting in poor conduction and contact, resulting in switch control failure or malfunctio...

Claims

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Application Information

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IPC IPC(8): H01H13/83
CPCH01H13/83H01H2219/06H01H2231/002
Inventor 郎欢标
Owner MIKOLTA OPTICAL TECH CO
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