CN202713890U - Shielding cover - Google Patents
Shielding cover Download PDFInfo
- Publication number
- CN202713890U CN202713890U CN 201220323298 CN201220323298U CN202713890U CN 202713890 U CN202713890 U CN 202713890U CN 201220323298 CN201220323298 CN 201220323298 CN 201220323298 U CN201220323298 U CN 201220323298U CN 202713890 U CN202713890 U CN 202713890U
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- Prior art keywords
- screening cover
- shielding
- utility
- electronic components
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Abstract
The utility model discloses a shielding cover. The shielding cover is connected with a PCB board which is provided with electronic components. The shielding cover is provided at least one shielding chamber used for covering the electronic components. According to the shielding cover, by arranging at least one shielding chamber used for shielding the electronic components, external radio frequency interference to the electronic components in the shielding chamber is avoided, and radio frequency interference to other electronic components is further avoided, so mutual radio frequency interference among the electronic components is reduced; by further employing conductive plastic to make the shielding cover, weight of the printed circuit board is greatly reduced, moreover, the conductive plastic has excellent conductivity, a shielding effect of the shielding cover is improved.
Description
Technical field
The utility model relates to communication equipment field, relates in particular to a kind of screening cover for shielding pcb board electronic devices and components.
Background technology
Printed circuit board (PCB) (PCB) has in electronics and telecommunication industry widely to be used, and it normally take insulation board as base material, is cut into certain size, at least with a conductive pattern, and cloth porose (such as component hole, fastener hole, plated-through hole etc.).
But the continuous increase along with the closeness of the electronic devices and components on the printed circuit board (PCB) and circuit, when work, various electronic devices and components can produce radio frequency interference each other, certain or some electronic devices and components can't be worked, thereby affect the normal operation of whole printed circuit board (PCB), brought many problems for user's practical application.
Therefore, prior art has yet to be improved and developed.
The utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of screening cover, is intended to solve the problem that existing each electronic devices and components of printed circuit board (PCB) produce radio frequency interference easily.
The technical solution of the utility model is as follows:
A kind of screening cover is connected in the pcb board that is provided with electronic devices and components, wherein, is provided with at least one shielding cavity be used to covering described electronic devices and components on the described screening cover.
Described screening cover, wherein, described screening cover is the conductive plastics screening cover.
Described screening cover, wherein, the quantity of described shielding cavity is one, two or four.
Described screening cover, wherein, described screening cover is fixedly connected with pcb board by securing member.
Described screening cover, wherein, described securing member is screw.
Described screening cover, wherein, described screening cover and pcb board are fixed by the mode of ultrasonic bonding.
Described screening cover, wherein, described screening cover is connected by adhesive tape with pcb board.
Described screening cover, wherein, described screening cover is connected with pcb board by bayonet unit.。
Beneficial effect: the utility model screening cover, the shielding cavity that is used for the screening electron components and parts by be provided with at least one at screening cover, thereby avoided the electronic devices and components in the shielding cavity to be subject to extraneous radio frequency interference, and to the radio frequency interference of other electronic devices and components, thereby reduced the radio frequency interference between the electronic devices and components, the utility model also adopts conductive plastics to make screening cover, greatly reduced the weight of printed circuit board (PCB), and owing to the good conductivity of conductive plastics, improved the shield effectiveness of screening cover.
Description of drawings
Fig. 1 is the structural representation of the utility model screening cover the first embodiment.
Fig. 2 is the structural representation of the utility model screening cover the second embodiment.
Embodiment
The utility model provides a kind of screening cover, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below the utility model further described.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 1, Fig. 1 is the structural representation of the preferred embodiment of the utility model screening cover, be provided with the shielding cavity 100 that at least one is used for covering electronic devices and components at this screening cover, the shape of this shielding cavity 100 can and arrange to carry out suitable adjustment according to the quantity of its electronic devices and components that cover, for example circle, rectangle, square or other irregular shapes, adopt rectangle commonly used to make the shape that becomes shielding cavity 100 in the utility model, this meets the needs on the most printed circuit board (PCB).
In the utility model, screening cover adopts conductive plastics to be made, conductive plastics is a kind of with resin and conductive materials mixing, with the functional macromolecule material that the processing mode of plastics is processed, for example can adopt metallic fiber or made by nonmetal fiber and plastics hybrid process through metalized.Conductive plastics is because having the character of conductivity and plastics concurrently, thereby uses and have good effect in the shielding field of printed circuit board (PCB), and its isolation effect is good, and radio frequency or electromagnetic interference shielding action that the electronic devices and components of printed circuit board (PCB) are produced are strong.
In the utility model, the quantity of shielding cavity 100 can be according to the electronic devices and components on the printed circuit board (PCB) arrange to carry out adaptive adjustment, one, two, four or a plurality of shielding cavities for example can be set, screening cover as depicted in figs. 1 and 2, screening cover shown in Figure 1 has four shielding cavities 100, and screening cover shown in Figure 2 has a shielding cavity 100.In the utility model, screening cover is to be connected with printed circuit board (PCB) by securing member, described securing member can have various ways, for example screw, screw etc., certainly, need around screening cover or shielding cavity, a plurality of connecting holes 110 to be set in advance, as shown in Figure 1, and in printed circuit board (PCB) corresponding position perforate, in order to connect.Certainly, in the utility model, can also printed circuit board (PCB) be connected with screening cover other modes, the mode of ultrasonic bonding for example, it is to utilize the dither ripple to be delivered to the body surface of two need welding, in the situation of pressurization, make the mutual friction of two body surface phases and form fusion between the molecular layer, ultrasonic bonding speed is fast, good airproof performance.In addition, also can screening cover be connected with printed circuit board (PCB) by adhesive tape or bayonet unit.
In sum, the utility model screening cover, the shielding cavity that is used for the screening electron components and parts by be provided with at least one at screening cover, thereby avoided the electronic devices and components in the shielding cavity to be subject to extraneous radio frequency interference, and to the radio frequency interference of other electronic devices and components, thereby reduced the radio frequency interference between the electronic devices and components, the utility model also adopts conductive plastics to make screening cover, greatly reduced the weight of printed circuit board (PCB), and owing to the good conductivity of conductive plastics, improved the shield effectiveness of screening cover.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or conversion, all these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (8)
1. a screening cover is connected in the pcb board that is provided with electronic devices and components, it is characterized in that, is provided with at least one shielding cavity be used to covering described electronic devices and components on the described screening cover.
2. screening cover according to claim 1 is characterized in that, described screening cover is the conductive plastics screening cover.
3. screening cover according to claim 1 is characterized in that, the quantity of described shielding cavity is one, two or four.
4. screening cover according to claim 1 is characterized in that, described screening cover is fixedly connected with pcb board by securing member.
5. screening cover according to claim 4 is characterized in that, described securing member is screw.
6. screening cover according to claim 1 is characterized in that, described screening cover and pcb board are fixed by the mode of ultrasonic bonding.
7. screening cover according to claim 1 is characterized in that, described screening cover is connected by adhesive tape with pcb board.
8. screening cover according to claim 1 is characterized in that, described screening cover is connected with pcb board by bayonet unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323298 CN202713890U (en) | 2012-07-05 | 2012-07-05 | Shielding cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323298 CN202713890U (en) | 2012-07-05 | 2012-07-05 | Shielding cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202713890U true CN202713890U (en) | 2013-01-30 |
Family
ID=47594139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220323298 Expired - Lifetime CN202713890U (en) | 2012-07-05 | 2012-07-05 | Shielding cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202713890U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016090999A1 (en) * | 2014-12-11 | 2016-06-16 | 中兴通讯股份有限公司 | Radio frequency shielding box |
| CN108112228A (en) * | 2017-12-12 | 2018-06-01 | 北京自动化控制设备研究所 | A kind of structure for improving radio circuit capability of electromagnetic shielding |
| CN110418562A (en) * | 2019-06-19 | 2019-11-05 | 华为技术有限公司 | A kind of shielding case and electronic equipment |
-
2012
- 2012-07-05 CN CN 201220323298 patent/CN202713890U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016090999A1 (en) * | 2014-12-11 | 2016-06-16 | 中兴通讯股份有限公司 | Radio frequency shielding box |
| CN108112228A (en) * | 2017-12-12 | 2018-06-01 | 北京自动化控制设备研究所 | A kind of structure for improving radio circuit capability of electromagnetic shielding |
| CN110418562A (en) * | 2019-06-19 | 2019-11-05 | 华为技术有限公司 | A kind of shielding case and electronic equipment |
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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 |
Granted publication date: 20130130 |
|
| CX01 | Expiry of patent term |