CN204167159U - A kind of thin film switch - Google Patents
A kind of thin film switch Download PDFInfo
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- CN204167159U CN204167159U CN201420614546.1U CN201420614546U CN204167159U CN 204167159 U CN204167159 U CN 204167159U CN 201420614546 U CN201420614546 U CN 201420614546U CN 204167159 U CN204167159 U CN 204167159U
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- spring plate
- face circuit
- thin film
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Abstract
A kind of thin film switch, it is characterized in that: comprise flexible PCB, key face circuit, key spring plate and PET film, described key face circuit is mounted on flexible PCB, and described key spring plate and key face circuit are equipped with, and described PET film covers key spring plate and is mounted on key face circuit; On described key face circuit, both sides, corresponding key spring plate position have air slot.Adopt design of the present utility model, by air slot is designed in Flexible Printed Circuit, reduce thin film switch production process technology flow process, saved production cost; Ensureing the feel of switch key, production cost is made again greatly to reduce, and easy for installation, structure is simple, and reliability is high, improves production efficiency, has good market prospects.
Description
Technical field
The utility model relates to electronic devices and components field, a kind of thin film switch of specific design.
Background technology
Thin film switch is the operating system integrating keypress function, indicator elment, instrument panel.Be made up of panel, upper circuit, separator, lower circuit four part.For touching connected normal open switch, the upper and lower contact of thin film switch is off-state under normal circumstances.Press thin film switch, the contact of upper circuit is out of shape downwards, contacts conducting with the pole plate of lower circuit, and after finger unclamps, upper circuit contact bounce-back is returned, and circuit disconnects, and a signal is triggered in loop.Thin film switch structure is rigorous, good looking appearance, good airproof performance.There is moisture proof, the features such as long service life.Be widely used in the instrument of telecommunications, electronic measurements, Industry Control, Medical Devices, auto industry, intelligent toy, the fields such as household electrical appliance.
Flexible PCB has extensive application in the electronic equipments such as mobile phone, such as, as the one piece flexible circuit board that button position in mobile phone is corresponding.Mobile phone volume key, key, SOS key, key of taking pictures all use key spring plate, key spring plate is commonly circular or its outward appearance camber of kidney-shaped, operation principle is similar to sucker, when pressing sucker, in sucker, gas discharges, but difference is sucker material is generally flexible plastic, press gas discharge posterior sucker can't resilience, and key spring plate is mounted on after FPC on as to seal, therefore must be key spring plate designing and arranging air drain, so that key spring plate presses rear resilience.Existing thin film switch air discharge duct is arranged on the partition that coordinates with key spring plate, and existing shell fragment vent design shortcoming is: manufacturing cost is greatly highly difficult, and efficiency is low, is difficult to ensure handfeel of keys.
Utility model content
In order to solve the technical problem that above-mentioned thin film switch exists, the utility model discloses a kind of thin film switch, and the utility model adopts following technical scheme to solve above-mentioned technical problem:
A kind of thin film switch, comprise flexible PCB, key face circuit, key spring plate and PET film, described key face circuit is mounted on flexible PCB, and described key spring plate and key face circuit are equipped with, and described PET film covers key spring plate and is mounted on key face circuit; On described key face circuit, both sides, corresponding key spring plate position have air slot.
Compared with prior art, the utility model has following technique effect:
Adopt design of the present utility model, by air slot is designed in Flexible Printed Circuit, reduce thin film switch production process technology flow process, saved production cost; Ensureing the feel of switch key, production cost is made again greatly to reduce, and easy for installation, structure is simple, and reliability is high, improves production efficiency, has good market prospects.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is existing thin film switch structure schematic diagram.
Wherein 1 be flexible PCB 2 is key face circuit
3 be key spring plate 4 is PET film
5 is partition
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but the utility model is not only confined to following examples.
A kind of thin film switch, comprise flexible PCB 1, key face circuit 2, key spring plate 3 and PET film 4, described key face circuit 2 is mounted on flexible PCB 1, in order to realize attachment fast and save operation, the key spring plate 3 of thin film switch is directly affixed on PET film 4 surface, described key spring plate 3 is equipped with key face circuit 2, and described PET film 4 covers key spring plate 3 and is mounted on key face circuit 2; On described key face circuit 2, both sides, corresponding key spring plate 3 position have air slot.
Realize technique:
1, PET film direct shearing is become layout size, then switch key shell fragment is directly fitted on a pet film;
2, there is a large amount of copper sheet layers in logicalnot circuit region in key face circuit at present, can not have an impact, therefore key face circuit copper sheet layer regional area is made air slot to product itself.
3, also window at Flexible Printed Circuit coverlay correspondence position, air slot height: copper layer thickness 18um+ coverlay thickness 25um=43um, tradition air slot height: partition PET thickness (25um), whole air slot thickness is also better than the thickness of conventional films switch, is conducive to the exhaust of pressing process.
Comparison of process flow:
Original flow process: rush partition → waste discharge material → multiple film → assembling → punch extermal form
Change flow: assembling → punch extermal form
Adopt design of the present utility model, by air slot is designed in Flexible Printed Circuit, reduce thin film switch production process technology flow process, saved production cost; Ensureing the feel of switch key, production cost is made again greatly to reduce, and easy for installation, structure is simple, and reliability is high, improves production efficiency, has good market prospects.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (1)
1. a thin film switch, it is characterized in that: comprise flexible PCB, key face circuit, key spring plate and PET film, described key face circuit is mounted on flexible PCB, described key spring plate and key face circuit are equipped with, and described PET film covers key spring plate and is mounted on key face circuit; On described key face circuit, both sides, corresponding key spring plate position have air slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420614546.1U CN204167159U (en) | 2014-10-22 | 2014-10-22 | A kind of thin film switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420614546.1U CN204167159U (en) | 2014-10-22 | 2014-10-22 | A kind of thin film switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204167159U true CN204167159U (en) | 2015-02-18 |
Family
ID=52540824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420614546.1U Active CN204167159U (en) | 2014-10-22 | 2014-10-22 | A kind of thin film switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204167159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246930A (en) * | 2017-06-20 | 2017-10-13 | 深圳市力合鑫源智能技术有限公司 | A kind of thin film flexible force-sensing sensor |
-
2014
- 2014-10-22 CN CN201420614546.1U patent/CN204167159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246930A (en) * | 2017-06-20 | 2017-10-13 | 深圳市力合鑫源智能技术有限公司 | A kind of thin film flexible force-sensing sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |