CN215734569U - Metal shell lapping structure of power transmission line video monitoring device - Google Patents
Metal shell lapping structure of power transmission line video monitoring device Download PDFInfo
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- CN215734569U CN215734569U CN202121762090.XU CN202121762090U CN215734569U CN 215734569 U CN215734569 U CN 215734569U CN 202121762090 U CN202121762090 U CN 202121762090U CN 215734569 U CN215734569 U CN 215734569U
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- metal shell
- transmission line
- metal casing
- video monitoring
- line video
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Abstract
The utility model relates to the technical field of power transmission line video monitoring devices, in particular to a metal shell lapping structure of a power transmission line video monitoring device. The conductive foam plastic packaging structure comprises an upper-layer metal structure shell, a lower-layer metal structure shell, a silica gel ring, conductive foam and fixing screws. The upper layer metal shell and the lower layer metal shell are locked and pressed through screws. And the silica gel ring and the conductive foam are filled between the lapping surfaces of the upper layer metal shell and the lower layer metal shell. The utility model can prevent water and realize the electric conduction between the metal shells, thereby constructing the EMC with good performance.
Description
Technical Field
The utility model discloses the technical field of power transmission line video monitoring devices, and particularly relates to a metal shell lapping structure of a power transmission line video monitoring device.
Background
The good EMC characteristic is favorable to the product to operate under various electromagnetic environment (such as the electromagnetic field that the corona produces, the electric fast pulse group, power frequency magnetic field) of transmission line steadily and reliably. The electromagnetic environment adaptability of the product is enhanced, and the fault rate and the maintenance cost due to EMC problems are reduced. Traditional metal casing overlap joint mode owing to consider the waterproof demand of outdoor application, generally all adopts to fill between the casing and seals the silica gel strip and realize waterproofly. In the traditional metal shell lapping mode, the electric conduction lapping can not be realized between metal shells due to the filling of the sealing silica gel strip, and the ESD electrostatic discharge charge discharge is not facilitated, so that the EMC (electromagnetic compatibility) performance is poor, and a good shielding effect can not be formed on external electromagnetic interference noise.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is that the existing mode cannot achieve the defects of both waterproof performance and EMC performance, and the metal shell lapping structure of the video monitoring device for the power transmission line is provided, so that the shells can be electrically conducted, and the waterproof performance and the EMC performance are achieved.
In order to realize the purpose, the following technical scheme is provided:
the utility model provides a transmission line video surveillance device's metal casing overlap joint structure, includes upper metal casing, lower floor's metal casing, silica gel circle, electrically conducts the bubble cotton, upper metal casing and lower floor's metal casing pass through the screw lock and attach the pressfitting, fill between upper metal casing and the lower floor's metal casing faying surface the silica gel circle with electrically conducts the bubble cotton.
Preferably, the lower metal shell is provided with a silica gel ring slot and a conductive foam slot, wherein the silica gel ring slot is arranged at the periphery of the lower metal shell, and the conductive foam slot is arranged at the inner ring.
Preferably, the shape of the conductive foam is consistent with that of the groove of the lower metal shell.
Preferably, the conductive foam needs to have a compression ratio of 20% -40%.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model can enable the metal shell of the video monitoring device of the power transmission line to have waterproof property and simultaneously have good EMC (electromagnetic compatibility) property. Therefore, the internal PCB is protected from interference in an electromagnetic environment, and powerful guarantee is provided for the overall EMC performance of the product.
Drawings
FIG. 1 is a top view of the upper metal shell of the present invention;
FIG. 2 is a top view of the lower metal shell of the present invention;
FIG. 3 is a schematic view of the upper metal shell and the lower metal shell of the present invention;
FIG. 4 is a cross-sectional view of the assembled upper and lower metal shells of the present invention;
fig. 5 is a cross-sectional view of the conductive foam, the conductive adhesive and the release paper of the present invention.
Wherein, 1, a groove A; 2. a groove B; 3. a screw hole; 4. an upper metal shell; 5. a lower metal shell; 6. the lap joint part of the upper layer metal shell and the lower layer metal shell; 7. a silica gel ring; 8. conductive foam; 9. a conductive adhesive; 10. and (4) release paper.
Detailed Description
Example (b):
as shown in fig. 1-5, comprises a lower metal shell 5, an upper metal shell 4, and overlapping portions 6 of the upper and lower metal shells.
And the lap joint part 6 of the upper layer metal shell and the lower layer metal shell comprises a silica gel ring 7 and conductive foam 8. A silicon rubber ring 7 is arranged in a groove A1 on the periphery of the lower metal shell 5 along the overlapping surface of the upper metal shell 4 and the lower metal shell 5 for sealing and waterproofing. Similarly enclose slot B2 in lower floor's metal casing 5 along the faying surface of upper metal casing 4 and lower floor's metal casing 5 for place the conductive bubble cotton 8, install the cotton 8 back of conductive bubble, can realize the effective electric conduction of upper metal casing 4 and lower floor's metal casing 5, realize ESD electrostatic discharge electric charge and discharge, thereby strengthen the EMC performance greatly. The outer layer of the conductive foam 8 is conductive adhesive 9 which can effectively enhance the conductivity, and the outer layer of the conductive adhesive 9 is release paper 10. Specifically, the release paper 10 on the surface layer of the conductive foam 8 is uncovered, and the conductive foam 8 is directly adhered to the groove B2 by the adhesion force of the conductive adhesive 9. The conductive foam 8 can be customized according to the shape of the groove B2.
As shown in fig. 1-3, screw installation and locking are performed by aligning the upper metal shell 4 and the lower metal shell 5 with the screw holes 3.
After the equipment is accomplished, the periphery of overlap joint part 6 of this transmission line video surveillance device's upper metal casing and lower floor's metal casing has silica gel circle 7 to prevent water, and the internal periphery has the cotton 8 packing of conducting bubble to realize the electric conduction of upper metal casing 4 and lower floor's metal casing 5 to realize waterproof and EMC electromagnetic shield's taking into account.
Claims (4)
1. The utility model provides a transmission line video surveillance device's metal casing overlap joint structure which characterized in that: including upper metal casing (4), lower floor metal casing (5), silica gel circle (7), electrically conductive bubble cotton (8), upper metal casing (4) and lower floor metal casing (5) pass through the screw lock and attach the pressfitting, fill between upper metal casing (4) and lower floor metal casing (5) faying surface silica gel circle (7) with electrically conductive bubble cotton (8).
2. The metal shell lapping structure of the power transmission line video monitoring device according to claim 1, characterized in that: the lower metal shell is provided with a silica gel ring slot position and a conductive foam slot position, wherein the silica gel ring slot position is arranged on the periphery, and the conductive foam slot position is arranged on the inner periphery.
3. The metal shell lapping structure of the power transmission line video monitoring device according to claim 1 or 2, characterized in that: the shape of the conductive foam is consistent with that of the groove of the lower metal shell.
4. The transmission line video monitoring device's of claim 3 metal casing overlap joint structure, characterized in that: the conductive foam needs to have a compression ratio of 20% -40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762090.XU CN215734569U (en) | 2021-07-30 | 2021-07-30 | Metal shell lapping structure of power transmission line video monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762090.XU CN215734569U (en) | 2021-07-30 | 2021-07-30 | Metal shell lapping structure of power transmission line video monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215734569U true CN215734569U (en) | 2022-02-01 |
Family
ID=79991144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121762090.XU Active CN215734569U (en) | 2021-07-30 | 2021-07-30 | Metal shell lapping structure of power transmission line video monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215734569U (en) |
-
2021
- 2021-07-30 CN CN202121762090.XU patent/CN215734569U/en active Active
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