CN203277850U - HDMI switching device with improved structure - Google Patents
HDMI switching device with improved structure Download PDFInfo
- Publication number
- CN203277850U CN203277850U CN 201320311988 CN201320311988U CN203277850U CN 203277850 U CN203277850 U CN 203277850U CN 201320311988 CN201320311988 CN 201320311988 CN 201320311988 U CN201320311988 U CN 201320311988U CN 203277850 U CN203277850 U CN 203277850U
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- CN
- China
- Prior art keywords
- circuit board
- pcb circuit
- metallic shield
- hdmi
- shielding cover
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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 - Fee Related
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Abstract
The utility model belongs to the electronic technical field and provides an HDMI switching device with an improved structure. The HDMI switching device with an improved structure comprises a PCB circuit board, an upper housing, a lower housing and an HDMI connecting cable. The HDMI connecting cable is electrically connected with the PCB circuit board. The PCB circuit board is located inside a space formed by the upper housing and the lower housing. A metal shielding cover is also arranged outside the PCB circuit board. The metal shielding cover is divided into an upper metal shielding cover and a lower metal shielding cover. After being buckled, the upper metal shielding cover and the lower metal shielding cover form a shielding space. The PCB circuit board is arranged inside the shielding space. The special-purpose shielding cover is adopted to surround the whole PCB circuit board. The PCB circuit board and devices are all arranged inside the special-purpose metal shielding cover. The housings are further assembled outside the metal shielding cover. In this way, the whole HDMI switching device is enabled to have greater shielding properties. The HDMI switching device with an improved structure has the characteristics of low manufacturing cost, good shielding performance and improved anti-interference capabilities. Furthermore, the HDMI switching device can smoothly meet the European Union EN55022 standard in terms of EMC radiation testing.
Description
Technical field
The utility model belongs to electronic technology field, relates to a kind of HDMI switch that improves structure.
Background technology
HDMI (High Definition Multimedia Interface) (High Definition Multimedia Interface, be called for short HDMI) be that a kind of totally digitilized image and sound transmit interface, can transmit audio signal and vision signal without compression, HDMI can be used for set-top box, DVD player, personal computer, game machine, digital sound and television set, HDMI can transmit audio frequency and video-audio signal simultaneously, because audio and video frequency signal adopts the same cable, greatly simplified the installation of system, deeply be subjected to liking of the numerous common people, at present the highest version of HDMI is HDMI1.4, its reference frequency reaches 340MHZ, maximum transmission rate reaches 10.2Gbps, the highest support 4096X2160, be multiplied several times than traditional analog television definition, so obtain very soon the approval in market, and present HDMI product is in the EN55022 standard that is difficult to reach European Union aspect the EMC radiation test, particularly the HDMI for non-source and terminal switches, distribute and the amplification product, existing HDMI switch generally comprises shell and PCB circuit board, the PCB circuit board is directly placed in the enclosure, be difficult to by the EMC testing standard like this.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, and provides a kind of simple, low cost of manufacture, and shielding is good, the HDMI switch of the improvement structure that antijamming capability is strong.
the utility model solves the problems of the technologies described above the technical scheme that adopts: a kind of HDMI switch that improves structure, comprise the PCB circuit board, upper shell, lower casing and HDMI connection cable, described HDMI connection cable is electrically connected to the PCB circuit board, the PCB circuit board is positioned at the space of shell and lower casing composition, it is characterized in that, described PCB circuit board also is provided with metallic shield outward, described metallic shield is divided into metallic shield and lower metallic shield, upper metallic shield and lower metallic shield are formed with shielding space after fastening, the PCB circuit board is arranged in shielding space.
In above-mentioned a kind of HDMI switch that improves structure, the tail end of described metallic shield is provided with and clamps mouth, the HDMI connection cable pierces in metallic shield and with the PCB circuit board by the clamping mouth and is electrically connected to, and clamps mouth after upper metallic shield and lower metallic shield fasten and clamps a HDMI connection cable.
In above-mentioned a kind of HDMI switch that improves structure, have the lamp of switching and switching push button on described PCB circuit board, offer respectively lamp hole and button hole on upper metallic shield.
In above-mentioned a kind of HDMI switch that improves structure, described metallic shield adopts foreign copper-nickel alloy material to make.
Compared with prior art, the utility model has the advantage of and adopt the private mask cover that whole PCB circuit board is surrounded, PCB circuit board and device all are contained in a special-purpose metal radome, assemble shell outside metallic shield, make so whole HDMI switch shielding better, low cost of manufacture, shielding is good, improve antijamming capability, can be smoothly in the EN55022 standard that reaches European Union aspect the EMC radiation test.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the HDMI switch of this improvement structure;
Fig. 2 is the decomposition texture schematic diagram of Fig. 1.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
In figure, PCB circuit board 1; Upper shell 2; Lower casing 3; HDMI connection cable 4; Upper metallic shield 5; Lower metallic shield 6; Shielding space 7; Clamp mouth 8; Switch lamp 9; Switching push button 10; Lamp hole 11; Button hole 12.
as depicted in figs. 1 and 2, the HDMI switch of this improvement structure, comprise PCB circuit board 1, upper shell 2, lower casing 3 and HDMI connection cable 4, HDMI connection cable 4 is electrically connected to PCB circuit board 1, PCB circuit board 1 is positioned at the space of shell 2 and lower casing 3 compositions, this HDMI switch has three Switch of working position mouths, in order to make the HDMI switch in the EN55022 standard that reaches European Union aspect the EMC radiation test, traditional way is generally at upper shell 2 and the enterprising electroplating of lower casing 3, this way is complex process not only, and manufacturing cost is also higher, and the innovation of the utility model maximum is also to be provided with metallic shield outside PCB circuit board 1, in order to make shielding better, metallic shield adopts foreign copper-nickel alloy material to make, metallic shield is divided into metallic shield 5 and lower metallic shield 6, after fastening, upper metallic shield 5 and lower metallic shield 6 be formed with shielding space 7, PCB circuit board 1 is arranged in shielding space 7, upper metallic shield 5 and lower metallic shield 6 fasten and must guarantee not stay any gap, stay the gap can affect shielding properties, metallic shield surrounds whole PCB circuit board 1 like this, comprise input and output, whole PCB circuit board 1 and device all are contained in a special-purpose metal radome, make antijamming capability and screening ability all stronger.
be connected with HDMI connection cable 4 for convenient, the tail end of metallic shield is provided with and clamps mouth 8, HDMI connection cable 4 pierces in metallic shield and with PCB circuit board 1 by clamping mouth 8 and is electrically connected to, after fastening, upper metallic shield 5 and lower metallic shield 6 clamp mouthful 8 clamping HDMI connection cables 4, very close to each other like this, strengthened shielding properties, have the lamp 9 of switching and switching push button 10 on PCB circuit board 1, offer respectively lamp hole 11 and button hole 12 on upper metallic shield 5, can switch the different station switching port when operation switching push button 10, make on corresponding station and to switch lamp 9 and light.
During assembling, first PCB circuit board 1 is put into the shielding space 7 that upper metallic shield 5 and lower metallic shield 6 form, the tail end of metallic shield clamps mouthfuls 8 and clamps HDMI connection cables 4, and then externally fit on shell 2 and lower casing 3, then locks by screw and get final product.
This HDMI switch after tested after, the key technical indexes is as follows:
1, support HDMI1.4;
2, peak transfer rate: 10.2Gbps;
3, the highest support of resolving power 4096X2160;
4, support 36 dark coloured images;
5, support intelligence to switch;
6, supply power voltage: DC+5V;
7, complete machine electric current:＜150mA;
8, clock frequency: 4MHZ ± 20PPM.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the defined scope of spirit of the present utility model.
Claims (4)
1. HDMI switch that improves structure, comprise PCB circuit board (1), upper shell (2), lower casing (3) and HDMI connection cable (4), described HDMI connection cable (4) is electrically connected to PCB circuit board (1), PCB circuit board (1) is positioned at the space of shell (2) and lower casing (3) composition, it is characterized in that, the outer metallic shield that also is provided with of described PCB circuit board (1), described metallic shield is divided into metallic shield (5) and lower metallic shield (6), upper metallic shield (5) and lower metallic shield (6) are formed with shielding space (7) after fastening, PCB circuit board (1) is arranged in shielding space (7).
2. a kind of HDMI switch that improves structure according to claim 1, it is characterized in that, the tail end of described metallic shield is provided with and clamps mouthful (8), HDMI connection cable (4) pierces in metallic shield and is electrically connected to PCB circuit board (1) by clamping mouthful (8), clamps mouthful (8) after upper metallic shield (5) and lower metallic shield (6) fasten and clamps HDMI connection cable (4).
3. a kind of HDMI switch that improves structure according to claim 1 and 2, it is characterized in that, have switching lamp (9) and switching push button (10) on described PCB circuit board (1), offer respectively lamp hole (11) and button hole (12) on upper metallic shield (5).
4. a kind of HDMI switch that improves structure according to claim 1 and 2, is characterized in that, described metallic shield adopts foreign copper-nickel alloy material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320311988 CN203277850U (en) | 2013-05-31 | 2013-05-31 | HDMI switching device with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320311988 CN203277850U (en) | 2013-05-31 | 2013-05-31 | HDMI switching device with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203277850U true CN203277850U (en) | 2013-11-06 |
Family
ID=49508181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320311988 Expired - Fee Related CN203277850U (en) | 2013-05-31 | 2013-05-31 | HDMI switching device with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203277850U (en) |
-
2013
- 2013-05-31 CN CN 201320311988 patent/CN203277850U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20170531 |