CN107833774A - A kind of key device and preparation method with electro-magnetic screen function - Google Patents
A kind of key device and preparation method with electro-magnetic screen function Download PDFInfo
- Publication number
- CN107833774A CN107833774A CN201711011224.2A CN201711011224A CN107833774A CN 107833774 A CN107833774 A CN 107833774A CN 201711011224 A CN201711011224 A CN 201711011224A CN 107833774 A CN107833774 A CN 107833774A
- Authority
- CN
- China
- Prior art keywords
- keypad
- shielding layer
- conductive
- main body
- pcb board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H01H13/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- 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
- H01H13/704—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 the layers, e.g. by their material or structure
-
- 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
- H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Push-Button Switches (AREA)
Abstract
The invention discloses a kind of key device and preparation method with electro-magnetic screen function, key device includes pressing key contacts main body (1), conductive shielding layer (2) and keypad (3), and conductive shielding layer (2), which is located at, to be pressed between key contacts main body (1) and keypad (3)；Include substrate (11) and multiple raised conductive bases (12) through substrate (11) by key contacts main body (1)；Conductive shielding layer (2) is provided with multiple apertures matched with conductive base (12)；Keypad (3) includes pcb board (31) and the button (32) through pcb board (31) projection；The side of the button (32) contacts fixation with the conductive base (12) through conductive shielding layer (2).The present invention is by being provided with one layer of conductive shielding layer between key contacts main body and keypad, the electromagnetic signal of electronic equipment internal can not be leaked in environment, and the electromagnetic signal in environment will not also enter electronic equipment internal so as to influence the normal work of equipment by button.
Description
Technical field
The present invention relates to a kind of key device and preparation method with electro-magnetic screen function.
Background technology
With the continuous development and progress of science and technology, microelectronic device has obtained extensively in various military hardwares and the product for civilian use
Infiltration applications are into all trades and professions for general application, especially computer, and as can not in military equipment and the product for civilian use
The equipment lacked.Due to the rapid development and application of the subjects such as high-energy electronics, Pulse Power Techniques and wireless technology, so making
Regular power must be utilized to produce Strong Electromagnetic Pulse to be possibly realized.But there are some researches show, this strong electromagnetic pulse can in
Electronic equipment and system in the environment form severe jamming or damage, and in a sense, electronic degree is higher, electronics
The anti-electromagnetism striking capabilities of equipment in itself are also more fragile.Therefore, the meter in military aspect using strong electromagnetic pulse attack other side
Calculation machine system and the electromagnetic signal acquisition information using the leakage of other computer system, turn into one kind " belligerent " hand of opposing sides
Section, then effective protection how is carried out to computer system must face and solve the problems, such as those skilled in the art.
Electromagnetic radiation is effectively reduced simultaneously, prevents electromagnetic interference, is protected important goal, is also studied and close as those skilled in the art
The important content of note.
At present, the electronic equipment used in us has one or more keys or buttons, and equipment will meet national standard or state
Army's target EMC Requirements, how let us equipment it is working properly, will not be done again by button by external electromagnetic signal
Disturb, and the signal of device interior will not caused by button electromagnetic signal leakage and it is exceeded, be always a scabrous problem.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind by between key contacts main body and keypad
Provided with one layer of conductive shielding layer, the electromagnetic signal of electronic equipment internal will not be leaked in environment, the electromagnetic signal in environment
Electronic equipment internal will not be entered by button so as to influence the normal work key apparatus of equipment and preparation method.
The purpose of the present invention is achieved through the following technical solutions：A kind of button dress with electro-magnetic screen function
Put, including by key contacts main body, conductive shielding layer and keypad, conductive shielding layer be located at by key contacts main body and keypad it
Between；
Include substrate and multiple raised conductive bases through substrate by key contacts main body；
Conductive shielding layer is provided with multiple apertures matched with conductive base；
Keypad includes pcb board and the button through pcb board projection；The side of the button is with passing through conductive shielding layer
Conductive base contact is fixed.
Further, the both sides of the pcb board are equipped with exposed metallic ground region, and metallic ground region is located at button
Periphery.
Further, it is described by screw is equipped with key contacts main body, conductive shielding layer and keypad, by key contacts master
It is screwed between body, conductive shielding layer and keypad.
A kind of key device preparation method with electro-magnetic screen function, comprises the following steps：
S1, the electrical connection circuit of button is plotted on pcb board, the positive and negative both sides panel surrounding of pcb board exposes use
Metallic region in the shell ground that picks；
S2, button is assembled on pcb board, obtains keypad；
S3, after conductive shielding material is cut by the shape of pcb board, the shielding material of conductive base correspondence position is dug
Sky, obtain conductive shielding layer；
S4, whole keypad is assembled to by key contacts main body together with conductive shielding layer, and be screwed.
The beneficial effects of the invention are as follows：The present invention is by being provided with one layer of conductive shield between key contacts main body and keypad
Layer, electromagnetic signal can be effectively shielded by such structure, and the electromagnetic signal of electronic equipment internal will not be leaked in environment,
Electromagnetic signal in environment will not also enter electronic equipment internal so as to influence the normal work of equipment by button.Its structure
Simply, easily realize, and cost is low, is especially suitable for promoting the use of on a large scale.
Brief description of the drawings
Fig. 1 is the structural representation of the key device with electro-magnetic screen function of the present invention；
Fig. 2 is the sectional view of the key device with electro-magnetic screen function of the present invention；
Description of reference numerals：1- presses key contacts main body, 11- substrates, 12- conductive bases；
2- conductive shielding layers；
3- keypads, 31-PCB plates, 32- buttons.
Embodiment
Technical scheme is further illustrated below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of key device with electro-magnetic screen function, including by key contacts main body 1, conduction
Screen layer 2 and keypad 3, conductive shielding layer 2, which is located at, to be pressed between key contacts main body 1 and keypad 3；
Include substrate 11 and multiple raised conductive bases 12 through substrate 11 by key contacts main body 1；
Conductive shielding layer 2 is provided with multiple apertures matched with conductive base 12；
Keypad 3 includes pcb board 31 and the button 32 through the projection of pcb board 31；Led with passing through the side of the button 32
The contact of conductive base 12 of shield layer 2 is fixed.
Further, the both sides of the pcb board 31 are equipped with exposed metallic ground region, and metallic ground region, which is located at, presses
The periphery of key.
Further, it is described by screw is equipped with key contacts main body 1, conductive shielding layer 2 and keypad 3, by key contacts
It is screwed between main body 1, conductive shielding layer 2 and keypad 3.
A kind of key device preparation method with electro-magnetic screen function, comprises the following steps：
S1, the electrical connection circuit of button is plotted on pcb board, the positive and negative both sides panel surrounding of pcb board exposes use
Metallic region in the shell ground that picks；
S2, button is assembled on pcb board, obtains keypad；
S3, after conductive shielding material is cut by the shape of pcb board, the shielding material of conductive base correspondence position is dug
Sky, obtain conductive shielding layer；
S4, whole keypad is assembled to by key contacts main body together with conductive shielding layer, and be screwed.
The key device fixed is assembled on the structural member of electronic equipment, you can the electromagnetic shielding for completing button is set
Meter.By such construction design method, the electromagnetic signal outside equipment is blocked in outside electronic equipment, while the electromagnetism in equipment
Signal is also isolated in device interior, and button and can normal work.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such especially statement and embodiment.This area
Those of ordinary skill can make according to these technical inspirations disclosed by the invention various does not depart from the other each of essence of the invention
The specific deformation of kind and combination, these deform and combined still within the scope of the present invention.
Claims (4)
1. a kind of key device with electro-magnetic screen function, it is characterised in that including by key contacts main body (1), conductive shield
Layer (2) and keypad (3), conductive shielding layer (2), which is located at, to be pressed between key contacts main body (1) and keypad (3)；
Include substrate (11) and multiple raised conductive bases (12) through substrate (11) by key contacts main body (1)；
Conductive shielding layer (2) is provided with multiple apertures matched with conductive base (12)；
Keypad (3) includes pcb board (31) and the button (32) through pcb board (31) projection；The side of the button (32) with
Conductive base (12) through conductive shielding layer (2), which contacts, to be fixed.
A kind of 2. key device with electro-magnetic screen function according to claim 1, it is characterised in that the pcb board
(31) both sides are equipped with exposed metallic ground region, and metallic ground region is located at the periphery of button.
3. a kind of key device with electro-magnetic screen function according to claim 1, it is characterised in that described by bonded
Touch and be equipped with screw on main body (1), conductive shielding layer (2) and keypad (3), by key contacts main body (1), conductive shielding layer (2)
It is screwed between keypad (3).
4. a kind of key device preparation method with electro-magnetic screen function, it is characterised in that comprise the following steps：
S1, the electrical connection circuit of button is plotted on pcb board, the positive and negative both sides panel surrounding of pcb board is exposed for connecing
The metallic region on casing ground；
S2, button is assembled on pcb board, obtains keypad；
S3, after conductive shielding material is cut by the shape of pcb board, the shielding material of conductive base correspondence position is hollowed out, obtained
To conductive shielding layer；
S4, whole keypad is assembled to by key contacts main body together with conductive shielding layer, and be screwed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711011224.2A CN107833774A (en) | 2017-10-26 | 2017-10-26 | A kind of key device and preparation method with electro-magnetic screen function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711011224.2A CN107833774A (en) | 2017-10-26 | 2017-10-26 | A kind of key device and preparation method with electro-magnetic screen function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107833774A true CN107833774A (en) | 2018-03-23 |
Family
ID=61649239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711011224.2A Pending CN107833774A (en) | 2017-10-26 | 2017-10-26 | A kind of key device and preparation method with electro-magnetic screen function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107833774A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6207912B1 (en) * | 1997-03-03 | 2001-03-27 | Telefonaktiebolaget Lm Ericsson | Electrostatic discharge protection in a portable communication device |
| CN201489454U (en) * | 2009-06-01 | 2010-05-26 | 杨洋 | Multifunctional keyboard |
| CN202261421U (en) * | 2011-08-31 | 2012-05-30 | 青岛海信移动通信技术股份有限公司 | Shielding case for keys and portable mobile terminal |
| CN203491160U (en) * | 2013-09-09 | 2014-03-19 | 厦门市三特兴电子有限公司 | Membrane switch capable of providing electrostatic shielding |
| CN204332778U (en) * | 2015-01-07 | 2015-05-13 | 西安长远电子工程有限责任公司 | A kind of membrane keyboard preventing electrostatic |
-
2017
- 2017-10-26 CN CN201711011224.2A patent/CN107833774A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6207912B1 (en) * | 1997-03-03 | 2001-03-27 | Telefonaktiebolaget Lm Ericsson | Electrostatic discharge protection in a portable communication device |
| CN201489454U (en) * | 2009-06-01 | 2010-05-26 | 杨洋 | Multifunctional keyboard |
| CN202261421U (en) * | 2011-08-31 | 2012-05-30 | 青岛海信移动通信技术股份有限公司 | Shielding case for keys and portable mobile terminal |
| CN203491160U (en) * | 2013-09-09 | 2014-03-19 | 厦门市三特兴电子有限公司 | Membrane switch capable of providing electrostatic shielding |
| CN204332778U (en) * | 2015-01-07 | 2015-05-13 | 西安长远电子工程有限责任公司 | A kind of membrane keyboard preventing electrostatic |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1895826B1 (en) | Electronic Appliance with a metallic heat dissipating member | |
| CN204298318U (en) | A kind of anti-scratch moistureproof electromagnetic shielding adhesive tape | |
| WO2017160468A8 (en) | Systems and methods for electromagnetic interference shielding | |
| CN105744126B (en) | Electronic device and image establishing module thereof | |
| US10922513B2 (en) | Electronic component and electronic device comprising same | |
| US20130014983A1 (en) | Device contactor with integrated rf shield | |
| WO2015088453A1 (en) | Touch screen for underwater use | |
| CN103298284A (en) | Electromagnetic shielding machine case | |
| CN206294411U (en) | A kind of industrial all-in-one anti electrostatic grounding device | |
| CN101166410A (en) | Electromagnetic interference shielding device and its applied electronic device | |
| US9647366B1 (en) | Connector shielding in an electronic device | |
| CN107833774A (en) | A kind of key device and preparation method with electro-magnetic screen function | |
| CN210324137U (en) | Structure and assembly for a device including at least one touch button | |
| US10997109B2 (en) | Device with USB port | |
| CN201425733Y (en) | Computer keyboard with radiation proof function | |
| WO2004062336B1 (en) | Electromagnetic shield plate, electromagnetic shield structure, and electronic device | |
| US9996202B2 (en) | Electronic device including ITO electrode pattern and manufacturing method thereof | |
| CN214173383U (en) | Fiber-optic gyroscope capable of reducing thermomagnetic influence | |
| CN107484403A (en) | Radome, circuit board assemblies and electronic equipment | |
| CN206423015U (en) | A kind of light guide panel of the anti-electromagnetic interference of waterproof | |
| EP2378851A2 (en) | Electromagnetic shielding enclosure and electronic apparatus having same | |
| CN208904328U (en) | A kind of general-purpose serial bus USB connector | |
| CN206350065U (en) | A kind of camera module | |
| TWI448208B (en) | Esd protection element and electronic apparatus | |
| WO2020134459A1 (en) | Casing and mobile terminal applying casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180323 |
|
| RJ01 | Rejection of invention patent application after publication |