CN203747775U

CN203747775U - Touch key

Info

Publication number: CN203747775U
Application number: CN201420126736.9U
Authority: CN
Inventors: 沈志聪
Original assignee: Guangdong Midea Refrigeration Equipment Co Ltd
Current assignee: GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2014-03-19
Filing date: 2014-03-19
Publication date: 2014-07-30
Anticipated expiration: 2024-03-19

Abstract

The utility model discloses a touch key. The touch key comprises a PCB, a touch processing chip and an induction body. The touch key further comprises a first conductive block and a second conductive block which are arranged on the same surface of the PCB at intervals, wherein the first conductive block is electrically connected with the induction body, the second conductive block is electrically connected with the touch processing chip, and the first conductive block and the second conductive block are insulated from each other. When a person with static electricity touches the induction body, the static electricity or high current can be effectively prevented from damaging the touch processing chip, and therefore, the reliability of the touch key can be improved, the cost of the touch key is low.

Description

Touch key-press

Technical field

The utility model relates to touch induction technical field, relates in particular to a kind of touch key-press.

Background technology

Compared with traditional mechanical key, due to touch key-press have more attractive in appearance, durable, be difficult for the advantages such as misoperation, the application of touch key-press is more and more extensive at present.

Use in the process of touch key-press user, because human body is easier to produce static, in the time that human body contacts with touch key-press, can produce very high static, it is special in the time that touch face is metal material, electrostatic attenuation amount is little, and the electric weight that therefore seals in touch key-press inter-process chip is very large, is easy to cause the damage of touch key-press.

In order to prevent that static electricity on human body from damaging touch key-press, therefore touch key-press of the prior art has additionally increased static electricity absorber part, but cost is higher, and reliability is lower.

Utility model content

Main purpose of the present utility model is to provide the touch key-press that a kind of cost is low, reliability is high and can antistatic.

To achieve these goals, the touch key-press that the utility model provides, comprise pcb board, touch process chip and inductor, also comprise the first conducting block and second conducting block on the same surface that is arranged at intervals at described pcb board, described the first conducting block and described inductor are electrically connected, described the second conducting block and described touch process chip are electrically connected, and between described the first conducting block and described the second conducting block, insulation arranges.

Preferably, between described the first conducting block and described the second conducting block, be provided with insulating barrier.

Preferably, the shape of the opposite side between described the first conducting block and described the second conducting block matches each other.

Preferably, the opposite side between described the first conducting block and described the second conducting block is mutual interlock setting.

Preferably, the rounded setting of described the first conducting block, described the second conducting block arranges ringwise, and described the second conducting block is sheathed on the periphery of described the first conducting block.

Preferably, the opposite side between described the first conducting block and described the second conducting block is a plane, and is arranged in parallel.

Preferably, described the first conducting block and/or described the second conducting block are Copper Foil.

Preferably, described the first conducting block and described inductor are electrically connected by wire, power spring and/or conductive sponge.

The touch key-press that the utility model provides comprises pcb board, touches process chip and inductor, by the first conducting block and the second conducting block being set at the same spaced surface of pcb board, and the first conducting block and inductor are electrically connected, the second conducting block is electrically connected with touch process chip, between the first conducting block and the second conducting block, insulation arranges, in the time of human body touch inductor with static, can effectively prevent that static or large electric current from damaging touch process chip, improved the reliability of touch key-press, and cost is lower.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model touch key-press the first embodiment;

Fig. 2 is the structural representation of the utility model touch key-press the second embodiment;

Fig. 3 is the structural representation of the utility model touch key-press the 3rd embodiment.

Realization, functional characteristics and the advantage of the utility model object, in connection with embodiment, are described further with reference to accompanying drawing.

Embodiment

Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.

The utility model provides a kind of touch key-press, with reference to Fig. 1, Fig. 1 is the structural representation of the utility model touch key-press the first embodiment, this touch key-press comprises pcb board 10, touches process chip 20 and inductor 30, also comprise the first conducting block 40 and second conducting block 50 on the same surface that is arranged at intervals at pcb board 10, the first conducting block 40 is electrically connected with inductor 30, and the second conducting block 50 is electrically connected with touching process chip 20, and between the first conducting block 40 and the second conducting block 50, insulation arranges.

In the present embodiment, this touch key-press also comprises resistance R 1 and capacitor C 1, and wherein, above-mentioned the second conducting block 50 is connected to and is touched process chip 20 by resistance R 1, touches process chip 20 also by capacitor C 1 ground connection simultaneously.This resistance R 1 and capacitor C 1 form RC filtering, have determined again to touch the reference capacitance value of process chip 20 simultaneously.

Pcb board 10 in the present embodiment is single sided board, and above-mentioned touch process chip 20, the first conducting block 40 and the second conducting block 50 are all integrated on pcb board 10.

Further, the first conducting block 40 and/or the second conducting block 50 are Copper Foil.Preferably, the first conducting block 40 and the second conducting block 50 are the Copper Foil being integrated on above-mentioned pcb board 10.Wherein, the shape of the first conducting block 40 and the second conducting block 50 and size can arrange according to actual needs.

Between the first conducting block 40 and the second conducting block 50, have certain spacing, spacing size can arrange according to actual needs, as long as can make insulation between the first conducting block 40 and the second conducting block 50.

In the time of this touch key-press work, the first conducting block 40 induced signal being transmitted by inductor 30 of sampling, and be coupled to the second conducting block 50 by the insulating regions between the first conducting block 40 and the second conducting block 50, induced signal is transferred to and touches process chip 20 after resistance R 1 and capacitor C 1, touch process chip 20 according to the capacitance change of inductor 30 region inductions, carry out Treatment Analysis, determine touch information.If human body is with static, in the time of touch sensible body 30, because insulation between the first conducting block 40 and the second conducting block 50 arranges, therefore can isolate static or large current interference signal, make it to enter touch process chip 20, but can effectively be delivered to and touch process chip 20 from the body capacitance amount of inductor 30, thereby effectively prevent that static electricity on human body or large current interference damage from touching process chip 20.

The touch key-press that the utility model provides comprises pcb board 10, touch process chip 20 and inductor 30, by the first conducting block 40 and the second conducting block 50 are set at the same spaced surface of pcb board 10, and the first conducting block 40 is electrically connected with inductor 30, the second conducting block 50 is electrically connected with touch process chip 20, between the first conducting block 40 and the second conducting block 50, insulation arranges, in the time of human body touch inductor 30 with static, can effectively prevent that static or large electric current from damaging touch process chip 20, improve the reliability of touch key-press, and cost is lower.

Further, between the first conducting block 40 and the second conducting block 50, be provided with insulating barrier 60.The material of insulating barrier 60 can be insulating cement, insulating resin, pottery etc., specifically can arrange according to actual needs.It should be noted that between the first conducting block 40 and the second conducting block 50 and also can realize insulation between the two by electric clearance.

Further, the shape of the opposite side between the first conducting block 40 and the second conducting block 50 matches each other.In the present embodiment, a side with respect to the second conducting block 50 of the first conducting block 40 is made as the first sensitive surface, a side with respect to the first conducting block 40 of the second conducting block 50 is made as the second sensitive surface, the shape of the first sensitive surface and the second sensitive surface can arrange according to actual needs, and the first sensitive surface and the second sensitive surface are mutually adaptive, make within spacing between the first conducting block 40 and the second conducting block 50 remains on a suitable scope.Preferably, the first sensitive surface between the first conducting block 40 and the second conducting block 50 and the second sensitive surface are mutual interlock setting.In the present embodiment, the first conducting block 40 and the second conducting block 50 have following three kinds of execution modes:

Please, referring again to Fig. 1, the first execution mode is: the opposite side indentation between the first conducting block 40 and the second conducting block 50, and interlock setting mutually, the first sensitive surface and the second sensitive surface are all set to zigzag.

Please refer to Fig. 2, Fig. 2 is the structural representation of the utility model touch key-press the second embodiment, the second execution mode is: the rounded setting of the first conducting block 40, the second conducting block 50 arranges ringwise, and the second conducting block 50 is sheathed on the periphery of the first conducting block 40.

Please refer to Fig. 3, Fig. 3 is the structural representation of the utility model touch key-press the 3rd embodiment, and the third execution mode is: the opposite side between the first conducting block 40 and the second conducting block 50 is a plane, and is arranged in parallel.The first sensitive surface and the second sensitive surface are a plane, and the first sensitive surface and the second sensitive surface be arranged in parallel.

The concrete shape that it should be noted that above-mentioned the first sensitive surface and the second sensitive surface is not limited to above three kinds of execution modes.

Because this touch key-press is under different workplaces, the requirement of its sensitivity to capacitive sensing amount, electrostatic isolation intensity is all not identical, can be by adjusting the spacing between the first conducting block 40 and the second conducting block 50, the material of insulating barrier 60, and shape and the size etc. of adjusting area, shape, the first sensitive surface and second sensitive surface of the first conducting block 40 and the second conducting block 50 make this touch key-press be applicable to different workplaces, reach required sensitivity and isolation strength.

Further, the first conducting block 40 is electrically connected by wire, power spring and/or conductive sponge with inductor 30, and the first conducting block 40 is not limited to above three kinds with the connected mode of inductor 30, specifically selects according to actual needs.

These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. a touch key-press, comprise pcb board, touch process chip and inductor, it is characterized in that, also comprise the first conducting block and second conducting block on the same surface that is arranged at intervals at described pcb board, described the first conducting block and described inductor are electrically connected, described the second conducting block and described touch process chip are electrically connected, and between described the first conducting block and described the second conducting block, insulation arranges.

2. touch key-press as claimed in claim 1, is characterized in that, between described the first conducting block and described the second conducting block, is provided with insulating barrier.

3. touch key-press as claimed in claim 1, is characterized in that, the shape of the opposite side between described the first conducting block and described the second conducting block matches each other.

4. touch key-press as claimed in claim 3, is characterized in that, the opposite side between described the first conducting block and described the second conducting block is mutual interlock setting.

5. touch key-press as claimed in claim 3, is characterized in that, the rounded setting of described the first conducting block, and described the second conducting block arranges ringwise, and described the second conducting block is sheathed on the periphery of described the first conducting block.

6. touch key-press as claimed in claim 3, is characterized in that, the opposite side between described the first conducting block and described the second conducting block is a plane, and is arranged in parallel.

7. touch key-press as claimed in claim 1, is characterized in that, described the first conducting block and/or described the second conducting block are Copper Foil.

8. touch key-press as claimed in claim 1, is characterized in that, described the first conducting block and described inductor are electrically connected by wire, power spring and/or conductive sponge.