CN203350304U - Radio frequency test box - Google Patents
Radio frequency test box Download PDFInfo
- Publication number
- CN203350304U CN203350304U CN 201320425299 CN201320425299U CN203350304U CN 203350304 U CN203350304 U CN 203350304U CN 201320425299 CN201320425299 CN 201320425299 CN 201320425299 U CN201320425299 U CN 201320425299U CN 203350304 U CN203350304 U CN 203350304U
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- Prior art keywords
- shielding
- radio frequency
- knife
- shield door
- frequency testing
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- Expired - Fee Related
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Abstract
The utility model discloses a radio frequency test box including a shielding box body and a shielding door connected to the shielding box body through a hinge. The periphery of the shielding door is provided with inward bent shielding knife edges. The periphery of a door frame of the shielding box body is provided with shielding knife grooves with a U-shaped cross-section which are corresponding to the shielding knife edges. The shielding box body and the shielding door are in crimping fit and sealed through the shielding knife grooves and the. The cavities of the shielding knife grooves and the inner sides of the shielding knife edges are all provided with elastic shielding wire mesh bar. The radio frequency test box is a composite body of a metal substrate and a metal surface. The radio frequency test box can effectively shield external electromagnetic interference waves with extremely high shielding effectiveness, and also has the advantage of reasonable process technique.
Description
Technical field
The utility model relates to a kind of wireless electronic product test box, is a kind of shielded box of use when the rf terminal electronic product is carried out to radio frequency testing specifically.
Background technology
Radio frequency is that a kind of high-frequency ac changes electromagnetic abbreviation, in fields such as radio communication, electronic recognition, be widely used, owing to being full of electromagnetic wave in space environment, when the rf terminal electronic product is tested, for itself and external electromagnetic interference wave signal are isolated, avoid test result is exerted an influence, successfully tested, generally product is put into to the radio frequency testing case with electro-magnetic screen function and tested.As one of important component part of rf terminal electronic product Electromagnetic Interference Test equipment, the radio frequency testing case has played the effect of the external electromagnetic field of shielded box.
The radio frequency testing case generally comprises shielding case body and shield door, shielding case body and shield door closeness of contact are the key factors that affects its shield effectiveness, to guarantee shielding case body and shield door closeness of contact when design, to guarantee test box self-conductive continuity, and then improve its shield effectiveness.Mainly adopt in the market die casting, panel beating, welding isotype to manufacture shielding case body, and between shielding case body and shield door, the design of surface of contact and processing aspect exist a lot of problems, cause having gap between shielding case body and shield door, radiofrequency signal to be measured is easy to leak, external interference also is easy to enter test box around signal, make shield effectiveness lower, affected the accuracy of test result.Simultaneously, the material of radio frequency testing case in the market is aluminium, its complex manufacturing technology, and shield effectiveness is low.
The utility model content
The utility model technical issues that need to address are to provide a kind of radio frequency testing case that can effectively shield the external electromagnetic wave interference.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
The radio frequency testing case, the shield door that comprises shielding case body, is connected through the hinge with shielding case body, the shielding edge of a knife bent inwards is set on described shield door, it is U-shaped shielding cutter groove that the xsect corresponding with the shielding edge of a knife is set on described shielding case body, and shielding case body and shield door are by shielding cutter groove and the sealing of shielding edge of a knife press fit.
Further improvement of the utility model is: described shielding cutter groove is arranged on the surrounding of shielding case body doorframe, and described shielding edge of a knife correspondence is arranged on the surrounding of shield door.
Further improvement of the utility model is: the inboard of described shielding cutter groove inner chamber and the shielding edge of a knife all arranges is with flexible shielding silk screen bar.
Further improvement of the utility model is: described shield door medial surface covers absorption flat plate, and the surrounding of described absorption flat plate contacts with the inboard shielding silk screen bar arranged of the shielding edge of a knife.
Further improvement of the utility model is: described shielding edge of a knife surface applies Shielding coating.
Further improvement of the utility model is: between described shielding case body and shield door, latch mechanism is set.
Further improvement of the utility model is: the complex that described radio frequency testing case is metallic matrix and metal surface.
Owing to having adopted technique scheme, the obtained technical progress of the utility model is:
The utility model can shield multiple electromagnetic wave, by the xsect on shielding case body, be to coordinate the crimping sealing between U-shaped shielding cutter groove and the shielding edge of a knife on shield door, make between shielding case body and shield door to contact closely, whole radio frequency testing case has guaranteed good conduction continuity, thereby has shield effectiveness preferably; The inner chamber fixed installation shielding silk screen bar of shielding cutter groove, on shield door, shielding edge of a knife inside edge in edge adopts screen conducting adhesive that shielding silk screen bar is installed, and makes contacting of shielding case body and shield door tightr, prevents the shielded signal leakage, guarantees that test result is accurate.
Shielding edge of a knife surface applies Shielding coating, and Shielding coating has electric conductivity preferably, can make the electric conductivity between shielding case body and shield door improve, and improves the conduction continuity of its radio frequency testing case integral body, strengthens the shield effectiveness of radio frequency testing case.
The shield door medial surface covers absorption flat plate, not only can shield sound wave and electromagnetic wave, can also effectively prevent echo reflection, guarantees the accuracy of test result.The surrounding of absorption flat plate contacts with the inboard shielding silk screen bar arranged of the shielding edge of a knife, makes shield door and the inner chamber that the shielding edge of a knife surrounds all be filled, and can strengthen the shielding effect of shield door.
Between shielding case body and 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.
The casing material of radio frequency testing case is replaced by the complex on high magnetic conductive metal polar body and high-conductivity metal top layer, has changed accordingly manufacture craft, and technique is rationality more, has guaranteed high shield effectiveness simultaneously.
To sum up, the utlity model has the high advantage of shield effectiveness, can effectively shield multiple external interference wave, also there is the more rational advantage of manufacture craft simultaneously.
The accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is left view of the present utility model;
Fig. 3 is the A-A diagrammatic cross-section of Fig. 2.
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 silk screen bar, 6, absorption flat plate.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details:
Radio frequency testing box main body structure as shown in Figure 1 and Figure 2, comprises shielding case body 1 and shield door 2, and shielding case body 1 is connected by hinge 4 with the bottom of shield door 2, and the top closed position of shielding case body 1 and shield door 2 also arranges latch mechanism 3.
The matrix of radio frequency testing case is generally pure iron with magnetic conductivity and electric conductivity, steel plate etc., on the top layer of matrix, usually also is coated with magnetic conductivity and the electric conductivity metals stronger than matrix such as copper, nickel, permalloy.
The surrounding of shielding case body 1 doorframe arranges shielding cutter groove 1-1, and the xsect of shielding cutter groove 1-1 is U-shaped, shielding cutter groove 1-1 inner chamber fixed installation shielding silk screen bar 5.
The surrounding of shield door 2 is provided with shielding edge of a knife 2-1, and shielding edge of a knife 2-1 and shield door 2 connect as one, and bend inwards.Shielding edge of a knife 2-1 is corresponding with shielding cutter groove 1-1, and after shield door 2 fastens to shielding case body 1, shielding edge of a knife 2-1 inserts the inner chamber of shielding cutter groove 1-1, with shielding cutter groove 1-1 press fit, keeps air-tight state.Further, the surperficial coating on both sides Shielding coating of described shielding edge of a knife 2-1, the inboard screen conducting adhesive that adopts of shielding edge of a knife 2-1 is installed shielding silk screen bar 5, makes shielding case body 1 tightr with contacting of shield door 2.Shield door 2 medial surfaces cover absorption flat plate 6, and the surrounding of absorption flat plate 6 contacts with the shielding silk screen bar 5 that be equipped with shielding edge of a knife 2-1 inboard, make shield door 2 and the inner chamber that shielding edge of a knife 2-1 surrounds all be filled, and strengthen the shielding effect of shield door 2.
The radio frequency testing case is when closed condition, and the compression joint sealing structure between shielding edge of a knife 2-1 and shielding cutter groove 1-1 as shown in Figure 3.Now whole radio frequency testing box-shaped becomes whole, and surface of contact is tight, and the self-conductive continuity is good, can reach best shield effectiveness, guarantees that data test is accurate.
Claims (7)
1. radio frequency testing case, comprise shielding case body (1), the shield door (2) be connected by hinge (4) with shielding case body (1), it is characterized in that: the upper shielding edge of a knife (2-1) bent inwards that arranges of described shield door (2), the upper setting of described shielding case body (1) xsect corresponding with the shielding edge of a knife (2-1) is U-shaped shielding cutter groove (1-1), and shielding case body (1) and shield door (2) seal by shielding cutter groove (1-1) and the shielding edge of a knife (2-1) press fit.
2. radio frequency testing case according to claim 1, it is characterized in that: described shielding cutter groove (1-1) is arranged on the surrounding of shielding case body (1) doorframe, and the described shielding edge of a knife (2-1) correspondence is arranged on the surrounding of shield door (2).
3. radio frequency testing case according to claim 1 is characterized in that: the inboard of described shielding cutter groove (1-1) inner chamber and the shielding edge of a knife (2-1) all arranges is with flexible shielding silk screen bar (5).
4. radio frequency testing case according to claim 3, it is characterized in that: described shield door (2) medial surface covers absorption flat plate (6), and the surrounding of described absorption flat plate (6) contacts with the inboard shielding silk screen bar (5) arranged of the shielding edge of a knife (2-1).
5. according to the described radio frequency testing case of claim 1～4 any one, it is characterized in that: the described shielding edge of a knife (2-1) surface applies Shielding coating.
6. according to the described radio frequency testing case of claim 1～4 any one, it is characterized in that: between described shielding case body (1) and shield door (2), latch mechanism (3) is set.
7. according to the described radio frequency testing case of claim 1～4 any one, it is characterized in that: the complex that described radio frequency testing case is metallic matrix and metal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320425299 CN203350304U (en) | 2013-07-17 | 2013-07-17 | Radio frequency test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320425299 CN203350304U (en) | 2013-07-17 | 2013-07-17 | Radio frequency test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203350304U true CN203350304U (en) | 2013-12-18 |
Family
ID=49750188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320425299 Expired - Fee Related CN203350304U (en) | 2013-07-17 | 2013-07-17 | Radio frequency test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203350304U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9828798B1 (en) | 2016-03-22 | 2017-11-28 | Shielding Resources Group, Inc. | Radio frequency and acoustic shielding door |
| CN111665376A (en) * | 2019-03-07 | 2020-09-15 | 湖南省海狮电器有限公司 | Anti-interference shielding case for monitoring power transmission line |
| CN113207076A (en) * | 2021-05-10 | 2021-08-03 | 江苏万喜至工业设计有限公司 | Audio test box equipment with shell type double shielding layers |
-
2013
- 2013-07-17 CN CN 201320425299 patent/CN203350304U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9828798B1 (en) | 2016-03-22 | 2017-11-28 | Shielding Resources Group, Inc. | Radio frequency and acoustic shielding door |
| CN111665376A (en) * | 2019-03-07 | 2020-09-15 | 湖南省海狮电器有限公司 | Anti-interference shielding case for monitoring power transmission line |
| CN113207076A (en) * | 2021-05-10 | 2021-08-03 | 江苏万喜至工业设计有限公司 | Audio test box equipment with shell type double shielding layers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qin Jianhui Inventor after: Gao Xiuyan Inventor after: Ge Xuanming Inventor before: Qin Jianhui Inventor before: Gao Xiuyan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: QIN JIANHUI GAO XIUYAN TO: QIN JIANHUI GAO XIUYAN GE XUANMING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170728 Address after: 050035 Tianshan Street, 38-1-206, hi tech Zone, Hebei, Shijiazhuang Patentee after: SHIJIAZHUANG TUODA SCIENTIFIC AND TRADE Co. Address before: 050035 No. 38-1 Tianshan Street, East Development Zone, Hebei, Shijiazhuang Patentee before: Qin Jianhui |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |