CN202886423U - Electromagnetic shielding box - Google Patents
Electromagnetic shielding box Download PDFInfo
- Publication number
- CN202886423U CN202886423U CN 201220549490 CN201220549490U CN202886423U CN 202886423 U CN202886423 U CN 202886423U CN 201220549490 CN201220549490 CN 201220549490 CN 201220549490 U CN201220549490 U CN 201220549490U CN 202886423 U CN202886423 U CN 202886423U
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- shielding
- electromagnetic
- cutter groove
- knife
- case body
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- Expired - Lifetime
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Abstract
The utility model discloses an electromagnetic shielding box. The electromagnetic shielding box comprises a shielding box body and a shielding door connected with the shielding box body through a hinge, wherein the shielding box body and the shielding door are sealed in a compression joint fit manner through a shielding knife groove and a shielding knife edge which are in concave-convex fit; a shielding reed is arranged on each of two lateral surfaces of the inner cavity of the shielding knife groove; a wave absorbing material for shielding sound wave and electromagnetic wave is arranged on the bottom surface of the inner cavity of the shielding knife groove; and the shielding reeds and the wave absorbing material are in compression joint fit with the two lateral surfaces and the top of the shielding knife edge respectively. By using the electromagnetic shielding box, multiple external interference waves can be effectively shielded, not only the electromagnetic wave can be shielded, but also the sound wave and fine particles and harmful substances which float in air can be shielded.
Description
Technical field
The utility model relates to a kind of shielded box, specifically a kind of shielded box that uses when testing wireless electronic product.
Background technology
The at present transmission of the signal between the various device all trends towards wireless future development, such as mobile phone, wireless network card, wireless router, satellite navigation etc., in these wireless electronic products, the emission reception of the emission reception of wireless signal, the emission reception of infrared signal, Bluetooth signal etc. has become necessary functions.Owing to being full of electromagnetic wave in the space environment, when wireless electronic product is tested, for itself and external signal are isolated, avoid test result is produced interference, successfully test the size of undesired signal, generally product is put into electromagnetic shielding box and test.As one of important component part of portable terminal Electromagnetic Interference Test equipment, electromagnetic shielding box has played shielded box inside and outside electromagnetic field, has kept the effect of measured signal quality.
Electromagnetic shielding box generally comprises shielding case body and shield door, and the shielding case body design will be guaranteed its conduction continuity, adopts in the market main die casting, casting, panel beating welding isotype, guarantees surface smoothness and the closeness of contact of product.Shielded box only guarantees that good conduction continuity just can guarantee good shield effectiveness, and the slit of shielding case body and shield door surface of contact also can make the shielding electromagnetic waves signals leakiness, causes test result inaccurate.
At present, electromagnetic shielding box mainly is confined to shield the electromagnetic wave of lower frequency, and for sound wave, microwave and float aerial fine particle and objectionable impurities, its shield effectiveness is all poor, has affected the accuracy of test result; Electromagnetic shielding box folding effort has affected production efficiency when a large amount of accurately measurement of production line electromagnetic intensity, intensity of acoustic wave simultaneously.
The utility model content
The utility model technical issues that need to address provide a kind of electromagnetic shielding box that can effectively shield external multiple interference wave.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
Electromagnetic shielding box, the shield door that comprises shielding case body, is connected through the hinge with shielding case body, described shielding case body and shield door are by shielding cutter groove and the sealing of shielding edge of a knife press fit of concavo-convex cooperation, described shielding cutter groove inner chamber two sides arrange shielding finger, shielding cutter groove inner chamber bottom surface is provided with for shielding sound wave and electromagnetic absorbing material, described shielding finger and absorbing material respectively with two sides and the top press fit of the shielding edge of a knife.
Further improvement of the utility model is: the part that described shielding finger is positioned at shielding cutter groove and the shielding edge of a knife is undaform.
Further improvement of the utility model is: described shielding cutter groove is arranged on around the shielding case body doorframe, and the described shielding edge of a knife is arranged on the shield door, and the cross section of shielding cutter groove and the shielding edge of a knife is trapezium structure.
Further improvement of the utility model is: described shielding finger is crimped on shielding cutter groove sidewall opening end and is fixed by U-shaped press strip socket.
Further improvement of the utility model is: described absorbing material is plate sound insulation absorbing material.
Further improvement of the utility model is: also be provided with latch mechanism between described shielding case body and the shield door.
Because the technical progress of having adopted technique scheme, the utility model to obtain is:
The utility model can shield multiple electromagnetic wave, and can shield sound wave and float aerial fine particle and objectionable impurities.By the shielding cutter groove on the shielding case body and the concavo-convex cooperation crimping sealing of the shielding edge of a knife on the shield door, make whole electromagnetic shielding box guarantee good shield effectiveness, in shielding cutter groove inner chamber two sides shielding finger is set, shielding cutter groove inner chamber bottom surface arranges absorbing material, shielding finger and absorbing material respectively with the shielding edge of a knife two sides and top press fit, contacting of shielding case body and shield door is tight, prevents the shielded signal leakage, guarantees that test result is accurate.
Shielding cutter groove and shielding edge of a knife cross section are trapezium structure, in trapezoidal two sides shielding finger are set, and the friction force of shielding finger in the time of can reducing the open and close shield door makes the folding with convenience of electromagnetic shielding box laborsaving.Shielding finger adopts U-shaped press strip socket to be pressed abd fixed on the sidewall opening end of shielding cutter groove, has strengthened the stationarity of shielding finger, prevents that the shielding finger displacement causes shielding case body and shield door not to closely cooperate in the use procedure, affects shield effectiveness.
Plate sound insulation absorbing material is set between shield door and shielding case body, both can have reached shielding sound wave and electromagnetic function, can also be able to prevent that shielded box outer fine particle and objectionable impurities from entering in the case, guarantees the accuracy of test result.
Between shielding case body and the shield door latch mechanism is set, can strengthens the closeness of contact of whole electromagnetic shielding box, guarantee to conduct electricity continuity, guarantee shield effectiveness.
Description of drawings
Fig. 1 is agent structure schematic diagram of the present utility model;
Fig. 2 is left view of the present utility model;
Fig. 3 is the cut-open view of A-A among Fig. 1;
Fig. 4 is the zoomed-in view of I part among Fig. 3.
Wherein, 1, shielding case body, 1-1, shielding cutter groove, 2, shield door, 2-1, the shielding edge of a knife, 3, latch mechanism, 4, hinge, 5, shielding finger, 6, absorbing material, 7, U-shaped press strip.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further details:
The electromagnetic shielding box agent structure comprises shielding case body 1 as shown in Figure 1 and Figure 2, and described shielding case body 1 is connected by hinge 4 with shield door 2, also is provided with latch mechanism 3 between shielding case body 1 and the shield door 2.
When electromagnetic shielding box was in closed condition, shielding case body 1 and shield door 2 were by shielding cutter groove 1-1 and the sealing of shielding edge of a knife 2-1 press fit of concavo-convex cooperation, and the structure of crimping sealing place as shown in Figure 3, Figure 4.Shielding cutter groove 1-1 is set around shielding case body 1 doorframe, described shielding cutter groove 1-1 cross section is trapezium structure, two sides of shielding cutter groove 1-1 inner chamber arrange the shielding finger 5 of undaform, shielding finger 5 is socketed in shielding cutter groove 1-1 sidewall opening end, described shielding finger 5 one side pressures are connected on shielding cutter groove 1-1 sidewall opening end, and at shielding finger 5 and shielding cutter groove 1-1 port crimping place socket U-shaped press strip 7 is set, by U-shaped press strip 7 shielding finger 5 is pressed abd fixed on and shields cutter groove 1-1 sidewall opening end place.
U-shaped press strip 7 is socketed in the sidewall opening end of shielding cutter groove, make shielding finger 5 can be fixed on shielding cutter groove 1-1 intracavity sidewall, in the open and close process of shield door 2, can not change by occurrence positions, guarantee that shielding case body 1 contacts with shield door 2 closely, guarantee shield effectiveness.Shielding cutter groove 1-1 inner chamber bottom surface arranges absorbing material 6, and described absorbing material 6 is plate sound insulation absorbing material, and commonly used have polyurethane, an electromagnetic shield rubber etc.Absorbing material 6 both can shield sound wave and electromagnetic wave simultaneously, outer fine particle and the objectionable impurities of all right Isolated Shield case, the accuracy of test data when guaranteeing the electromagnetic shielding box use.
Be provided with shielding edge of a knife 2-1 on the shield door 2, the cross sectional shape of described shielding edge of a knife 2-1 is similar to shielding cutter groove 1-1, also is trapezium structure; The position of shielding edge of a knife 2-1 is corresponding with shielding cutter groove 1-1.
Use the utility model to carry out in the test process, when closing shield door 2, shielding case body 1 and shield door 2 are by shielding cutter groove 1-1 and the sealing of shielding edge of a knife 2-1 press fit of concavo-convex cooperation, the two sides of shielding edge of a knife 2-1 and shielding finger 5 press fit of undaform; Top and the absorbing material 6 tight press fit of shielding edge of a knife 2-1.Whole electromagnetic shielding box forms integral body, and surface of contact is tight, can reach best shield effectiveness, guarantees that data test is accurate.
Claims (6)
1. electromagnetic shielding box, comprise shielding case body (1), the shield door (2) that is connected by hinge (4) with shielding case body (1), it is characterized in that: described shielding case body (1) and shield door (2) are by shielding cutter groove (1-1) and the sealing of the shielding edge of a knife (2-1) press fit of concavo-convex cooperation, described shielding cutter groove (1-1) inner chamber two sides arrange shielding finger (5), shielding cutter groove (1-1) inner chamber bottom surface is provided with for shielding sound wave and electromagnetic absorbing material (6), described shielding finger (5) and absorbing material (6) respectively with two sides and the top press fit of the shielding edge of a knife (2-1).
2. electromagnetic shielding box according to claim 1 is characterized in that: the part that described shielding finger (5) is positioned at shielding cutter groove (1-1) and shields the edge of a knife (2-1) is undaform.
3. electromagnetic shielding box according to claim 1, it is characterized in that: described shielding cutter groove (1-1) is arranged on around shielding case body (1) doorframe, the described shielding edge of a knife (2-1) is arranged on the shield door (2), and the cross section of shielding cutter groove (1-1) and the shielding edge of a knife (2-1) is trapezium structure.
4. each described electromagnetic shielding box according to claim 1～3 is characterized in that: described shielding finger (5) is crimped on shielding cutter groove (1-1) sidewall opening end and is socketed by U-shaped press strip (7) and is fixed.
5. each described electromagnetic shielding box according to claim 1～3, it is characterized in that: described absorbing material (6) is plate sound insulation absorbing material.
6. electromagnetic shielding box according to claim 1 is characterized in that: also be provided with latch mechanism (3) between described shielding case body (1) and the shield door (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549490 CN202886423U (en) | 2012-10-25 | 2012-10-25 | Electromagnetic shielding box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549490 CN202886423U (en) | 2012-10-25 | 2012-10-25 | Electromagnetic shielding box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202886423U true CN202886423U (en) | 2013-04-17 |
Family
ID=48077835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220549490 Expired - Lifetime CN202886423U (en) | 2012-10-25 | 2012-10-25 | Electromagnetic shielding box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202886423U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132146A (en) * | 2016-08-23 | 2016-11-16 | 重庆大及电子科技有限公司 | A kind of electromagnetic compatibility cabinet |
| CN106405168A (en) * | 2016-08-31 | 2017-02-15 | 贵州航天电子科技有限公司 | Radio transceiver test shielding box |
| CN105554675B (en) * | 2016-01-22 | 2018-05-25 | 珠海市精实测控技术有限公司 | Multilayer configurable acoustic shielding box |
| CN109752599A (en) * | 2017-11-08 | 2019-05-14 | 伟睿科技（深圳）有限公司 | The shielding castle of upper and lower open and close type |
| CN113419074A (en) * | 2021-06-18 | 2021-09-21 | 北京卫星环境工程研究所 | Disc type book switching system |
-
2012
- 2012-10-25 CN CN 201220549490 patent/CN202886423U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554675B (en) * | 2016-01-22 | 2018-05-25 | 珠海市精实测控技术有限公司 | Multilayer configurable acoustic shielding box |
| CN106132146A (en) * | 2016-08-23 | 2016-11-16 | 重庆大及电子科技有限公司 | A kind of electromagnetic compatibility cabinet |
| CN106405168A (en) * | 2016-08-31 | 2017-02-15 | 贵州航天电子科技有限公司 | Radio transceiver test shielding box |
| CN106405168B (en) * | 2016-08-31 | 2018-11-02 | 贵州航天电子科技有限公司 | A kind of radio set test shielded box |
| CN109752599A (en) * | 2017-11-08 | 2019-05-14 | 伟睿科技（深圳）有限公司 | The shielding castle of upper and lower open and close type |
| CN113419074A (en) * | 2021-06-18 | 2021-09-21 | 北京卫星环境工程研究所 | Disc type book switching system |
| CN113419074B (en) * | 2021-06-18 | 2022-03-01 | 北京卫星环境工程研究所 | Disc type book switching system |
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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: 20130417 |