CN202422013U - Low-radiation keyboard - Google Patents
Low-radiation keyboard Download PDFInfo
- Publication number
- CN202422013U CN202422013U CN2012200016294U CN201220001629U CN202422013U CN 202422013 U CN202422013 U CN 202422013U CN 2012200016294 U CN2012200016294 U CN 2012200016294U CN 201220001629 U CN201220001629 U CN 201220001629U CN 202422013 U CN202422013 U CN 202422013U
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- China
- Prior art keywords
- keyboard
- low radiation
- thin film
- cable
- metallic shield
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a low-radiation keyboard comprising a thin film switch and a keyboard circuit board which are electrically connected. A conductive screening cloth is coated on the outer surface of the thin film switch; and the keyboard circuit board is packaged in a metal screening box. With the adoption of the design, the low-radiation keyboard provided by the utility model ensures the entire screening stability of the keyboard, and has the advantages of good radiation-proof effect, light weight, low cost, controllable period and simple process.
Description
Technical field
The utility model relates to a kind of electromangnetic spectrum, specifically, relates to a kind of and the supporting low radiation keyboard of optical display shielding machine.
Background technology
At present; Electromagnetic radiation that keyboard produced and electromagnetic leakage cause the artificial electromagnetic environment of nature to pollute and to healthy infringement; Along with development of science and technology and the human enhancing that the protection of living environment is realized, occurred multiple to computing machine radiation proof Treatment Technology.The shield technological means that at present low radiation keyboard has generally adopted containing and filtering to combine; Circuit part with metallic object parcel keyboard; To reduce electromagnetic radiation leakage, the stube cable line between keyboard and the main frame has adopted shielded cable to reduce EM coupling, has adopted traffic filter that the stube cable line that passes through shield is carried out filtering; Because of receiving the restriction of keyboard structure singularity; Can not accomplish seamless containing,, generally can only reach the B level requirement among the GGBB1-1999 so shield effectiveness is undesirable always.Therefore, further reduce radiativity and become the technical matters that needs to be resolved hurrily.In addition, existing low radiating guide keyboard volume is heavy, cost is high, and the process-cycle is long, yield rate is low, be difficult for replacing.
China utility model patent ZL200720002933.X discloses a kind of keyboard of low radiation belt mouse, but its collection keyboard and mouse function roll into one, and control inconvenience, do not meet most of users' custom.
The utility model content
The technical matters that the utility model solved is to provide a kind of low radiation keyboard, has guaranteed the stability that the whole screen of keyboard is imitated.
Technical scheme is following:
A kind of low radiation keyboard comprises the thin film switch and the keyboard pcb of electrical connection, and said thin film switch outside surface is coated with conductive shield cloth, and said keyboard pcb is encapsulated in the metallic shield box.
Further: said keyboard pcb is provided with keyboard cable; Said keyboard cable is provided with the cable shielding layer; Said metallic shield box is provided with wire hole, and said keyboard cable is drawn from said wire hole, between said keyboard cable screen layer and metallic shield box, realizes overlap joint through full weld.
Further: the end of said keyboard cable is provided with aviation plug, and said aviation plug inside is placed with copper sheathing.
Further: said conductive shield cloth is the gum conductive fabric, sticks on said thin film switch upper surface through conducting resinl, and said conductive shield cloth is selected copper nickel conductive shield cloth for use.
Further: the periphery of said metallic shield box is wound with screen layer.
Further: said screen layer adopts Copper Foil.
Further: said metallic shield box adopts conductive material, and said conductive material is selected copper, iron or permalloy for use.
Further: the indicator lamp hole position of said metallic shield box is coated with wire netting
Further: said wire netting is selected 250 order stainless (steel) wires for use.
Further: also comprise loam cake, button and lower cover, said button is inlaid in and covers on said, and said button is positioned at said thin film switch top; Said thin film switch and said metallic shield box are arranged between said loam cake and the said lower cover, and are fixed on and cover under said.
The technique effect of the utility model comprises:
1, in the utility model, keyboard is provided with thin film switch, and thin film switch has guaranteed the stability that the whole screen of keyboard is imitated with copper nickel conductive fabric double wrapped.
2, in the utility model, keyboard pcb is by the encapsulation of metallic shield box, and the wire hole place uses the scolding tin full weld, guarantees shield effectiveness.
3, in the utility model, keyboard cable adopts four layers of shielded cable, 360 ° of overlap joints of metallic shield box of cable shielding layer and circuit board wherein, and cable interface adopts the air plug that has copper sheathing to design, and has reduced the electromagnetic leakage with terminal device casing junction.
4, the low radiation keyboard radiation proof of the utility model is effective; Reached the C level requirement among the GJB 4216-2001, and have in light weight, cost is low, controlling cycle, advantage of simple technology, does not have the obvious weight of extra increase; Do not influence keyboard appearance and volume; Process-cycle is short, and cost is low, is easy to produce in enormous quantities.
5, the utility model is applied on the apparent machine of light, can also simplify the structural design that light shows machine, improves outward appearance, and the low radiation keyboard of the utility model also can be applicable to low letting out and penetrates on the computing machine.
Description of drawings
Fig. 1 is the assembly drawing of the low radiation keyboard of the utility model;
Fig. 2 is the synoptic diagram of thin film switch of the parcel conductive shield cloth of the utility model;
Fig. 3 be parcel conductive shield cloth in the utility model thin film switch along A-A to diagrammatic cross-section;
Fig. 4 is the structural representation of metallic shield box in the utility model;
Fig. 5 be in the utility model the metallic shield box along B-B to diagrammatic cross-section.
Embodiment
Below with reference to exemplary preferred embodiments and reference drawings, the utility model is described in detail.
As shown in Figure 1, be the assembly drawing of the low radiation keyboard of the utility model.The structure of low radiation keyboard comprises: loam cake 1, button 2, thin film switch 3, metallic shield box 4, lower cover 5 and keyboard cable 6.Button 2 is inlaid on the loam cake 1, and button 2 is positioned at thin film switch 3 tops; Between loam cake 1 and lower cover 5, metallic shield box 4 set inside have keyboard pcb 9 (referring to Fig. 5) at metallic shield box 4 for metallic shield box 4 and the thin film switch 3 that is coated with conductive shield cloth 8 (referring to Fig. 2), and thin film switch 3 is electrically connected with keyboard pcb 9; Metallic shield box 4 is arranged on the sidepiece of thin film switch 3, and is fixed on the lower cover 5, and loam cake 1 snaps together with lower cover 5 sealed engagement, and keyboard pcb 9 is drawn keyboard cable 6, and the end of keyboard cable 6 is provided with aviation plug 7.
As shown in Figure 2, be the synoptic diagram of thin film switch of the parcel conductive shield cloth of the utility model, as shown in Figure 3, be parcel conductive shield cloth in the utility model thin film switch along A-A to diagrammatic cross-section.Thin film switch 3 outside surfaces are sealed and coated with conductive shield cloth 8, and conductive shield cloth 8 is gum conductive fabrics, stick on thin film switch 3 upper surfaces through conducting resinl, have guaranteed the stability that the whole screen of keyboard is imitated.Conductive shield cloth 8 can be the conductive fabric that arbitrary money has shield effectiveness also, and in this preferred embodiment, conductive shield cloth 8 is selected copper nickel conductive shield cloth for use, and the thickness of copper nickel conductive shield cloth is generally 0.1mm.
As shown in Figure 4, be the structural representation of metallic shield box in the utility model, as shown in Figure 5, be in the utility model the metallic shield box along B-B to diagrammatic cross-section.
Keyboard pcb 9 is encapsulated in the metallic shield box 4, and metallic shield box 4 adopts copper, iron or permalloy, its outside surface plastic-blasting; Long is 73mm, and wide is 33mm, and height is 10mm; Thickness is 0.1mm, and scolding tin spot welding is used in metallic shield box 4 peripheries, and twines copper metal forming 10.Metallic shield box 4 sidewalls are provided with wire hole 41, and wire hole 41 is used to draw keyboard cable 6, and the scolding tin full weld is used in the space between keyboard cable 6 and the wire hole 41, guarantee electromagnet shield effect.The indicator lamp hole position of metallic shield box 4 covers with stainless (steel) wire, and wire netting is selected 250 order stainless (steel) wires for use.Behind the metallic shield box 4 encapsulation keyboard pcbs 9, thin film switch 3 be screwed after keyboard pcb 9 aligns.Keyboard cable 6 adopts four layers of shielded cable, and keyboard cable 6 one ends are connected with keyboard pcb 9, and screen layer realizes and 360 ° of overlap joints of metallic shield box 4 that through the scolding tin full weld keyboard cable 6 other ends are connected with aviation plug 7.The inner copper sheathings of placing of aviation plug 7 have reduced the electromagnetic leakage with terminal device casing junction, to guarantee shield effectiveness.
The above is merely the preferred embodiment of the utility model, is not the protection domain that is used to limit the utility model.
Claims (10)
1. one kind low radiation keyboard comprises the thin film switch and the keyboard pcb of electrical connection, and it is characterized in that: said thin film switch outside surface is coated with conductive shield cloth, and said keyboard pcb is encapsulated in the metallic shield box.
2. low radiation keyboard as claimed in claim 1, it is characterized in that: said keyboard pcb is provided with keyboard cable, and said keyboard cable is provided with the cable shielding layer; Said metallic shield box is provided with wire hole, and said keyboard cable is drawn from said wire hole, between said keyboard cable screen layer and metallic shield box, realizes overlap joint through full weld.
3. low radiation keyboard as claimed in claim 2, it is characterized in that: the end of said keyboard cable is provided with aviation plug, and said aviation plug inside is placed with copper sheathing.
4. low radiation keyboard as claimed in claim 1 is characterized in that: said conductive shield cloth is the gum conductive fabric, sticks on said thin film switch upper surface through conducting resinl, and said conductive shield cloth is selected copper nickel conductive shield cloth for use.
5. low radiation keyboard as claimed in claim 1, it is characterized in that: the periphery of said metallic shield box is wound with screen layer.
6. low radiation keyboard as claimed in claim 5 is characterized in that: said screen layer adopts Copper Foil.
7. low radiation keyboard as claimed in claim 1 is characterized in that: said metallic shield box adopts conductive material, and said conductive material is selected copper, iron or permalloy for use.
8. like each described low radiation keyboard of claim 1 to 7, it is characterized in that: the indicator lamp hole position of said metallic shield box is coated with wire netting.
9. low radiation keyboard as claimed in claim 8 is characterized in that: said wire netting is selected 250 order stainless (steel) wires for use.
10. low radiation keyboard as claimed in claim 1 is characterized in that: also comprise loam cake, button and lower cover, said button is inlaid in and covers on said, and said button is positioned at said thin film switch top; Said thin film switch and said metallic shield box are arranged between said loam cake and the said lower cover, and are fixed on and cover under said.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200016294U CN202422013U (en) | 2012-01-04 | 2012-01-04 | Low-radiation keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200016294U CN202422013U (en) | 2012-01-04 | 2012-01-04 | Low-radiation keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202422013U true CN202422013U (en) | 2012-09-05 |
Family
ID=46746754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200016294U Expired - Lifetime CN202422013U (en) | 2012-01-04 | 2012-01-04 | Low-radiation keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202422013U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591463A (en) * | 2012-01-04 | 2012-07-18 | 安方高科电磁安全技术(北京)有限公司 | Low-radiation keyboard |
| CN104004222A (en) * | 2014-04-29 | 2014-08-27 | 青岛科技大学 | Waste rubber low-temperature continuous regeneration device and process method |
| CN105224093A (en) * | 2015-10-19 | 2016-01-06 | 山东超越数控电子有限公司 | A kind of keyboard |
| CN108966558A (en) * | 2018-08-23 | 2018-12-07 | 郑州云海信息技术有限公司 | A kind of Low emissivity mounting structure of the preposition cable of server |
-
2012
- 2012-01-04 CN CN2012200016294U patent/CN202422013U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591463A (en) * | 2012-01-04 | 2012-07-18 | 安方高科电磁安全技术(北京)有限公司 | Low-radiation keyboard |
| CN104004222A (en) * | 2014-04-29 | 2014-08-27 | 青岛科技大学 | Waste rubber low-temperature continuous regeneration device and process method |
| CN105224093A (en) * | 2015-10-19 | 2016-01-06 | 山东超越数控电子有限公司 | A kind of keyboard |
| CN108966558A (en) * | 2018-08-23 | 2018-12-07 | 郑州云海信息技术有限公司 | A kind of Low emissivity mounting structure of the preposition cable of server |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |