CN201178292Y - Anti-interference machine box - Google Patents
Anti-interference machine box Download PDFInfo
- Publication number
- CN201178292Y CN201178292Y CNU2008200631776U CN200820063177U CN201178292Y CN 201178292 Y CN201178292 Y CN 201178292Y CN U2008200631776 U CNU2008200631776 U CN U2008200631776U CN 200820063177 U CN200820063177 U CN 200820063177U CN 201178292 Y CN201178292 Y CN 201178292Y
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- CN
- China
- Prior art keywords
- case body
- machine case
- interference
- back shroud
- front panel
- Prior art date
- 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 discloses an anti-interference chassis structure, which structurally comprises a chassis body, a front panel and a back cover plate connected with the chassis body via the mating bolts, wherein a front frame is disposed at the front end of the chassis body and connected with the chassis body via the mating bolts; openings for positioning on a switch cabinet are disposed at four corners of the front frame; the front panel is disposed in the front frame, and a deep inner frame used for placing an insulting gasket is disposed on the inner side of the liquid crystal window of the front panel; and the inner surface of the chassis body is provided with vertical patterns. In order to conveniently repair and maintain the chassis structure, the back cover plate is divided into the left and the right parts, so that all the function modules can be conveniently dissembled. The anti-interference chassis structure belongs to the anti-interference chassis structure for a computer protection device and is mainly applicable in the computer protection device.
Description
Technical field
The utility model relates to a kind of cabinet, specifically, relates to a kind of anti-interference casing structure that is applied in the microcomputer protecting device.
Background technology
Along with the development of power electronic technology, the Microcomputer Protection that the conventional relay protection of high-and low-voltage circuit and transformer has been had the Based Intelligent Control ability substitutes multi-functional to realize, high efficiency defencive function.
Because of the influence of high-low pressure transformer, high-and low-voltage circuit, therefore in the environment of microcomputer protecting device operation, exist a large amount of electromagnetic signals to disturb, therefore, in the design process of microcomputer protecting device, anti-electromagnetic interference design is the important step of art designs; Because in microcomputer protecting device, device uses the intelligent microprocessor of light current power supply to carry out data processing, carry out signal transformation to the secondary side AC current-voltage; Therefore be easy to be subjected to electromagnetic interference, cause processor part operation exception, cause device tripping or malfunction when serious, become the hidden danger of the normal operation of circuit or transformer.Because the stable security of operation that directly has influence on circuit and transformer of Microcomputer Protection function, the performance requirement height, so structure and Anti-interference Design are vital links in the microcomputer protective relay design process; It also is a problem that allows the designer have a headache most.
The utility model content
The purpose of this utility model provides a kind of casing structure, makes it have stronger antijamming capability in microcomputer protective relay, improves its anti-collision ability simultaneously.
To achieve these goals, the technical solution adopted in the utility model is: a kind of anti-interference casing structure, comprise machine case body, front panel and back shroud, back shroud links to each other with machine case body by supporting screw, wherein, described machine case body front end is provided with front plane frame, front plane frame links to each other with machine case body by supporting screw, four of frame angles are provided with the perforate that is used for locating on switch cubicle in front, front panel is arranged in the front plane frame, and the liquid crystal window inboard of plate is provided with the degree of depth inside casing that is used to place insulation spacer in front, and the machine case body inner surface is provided with perpendicular shape lines.
Described back shroud is made up of left and right sides two parts, left and right sides two parts back shroud all by supporting screw on machine case body.
Each parts of described anti-interference casing structure are the thickening type parts of cold steel technology casting.
The thickening type machine case body that adopts the casting of cast aluminium technology to form, make it resist the ability of beating and shock resistance collision ability to strengthen greatly, provide holddown groove easily and the bar shaped lines of machine case body inner surface is inner function module, reduced the influence of pulsed electromagnetic radiation again.Be arranged on the front panel in the front plane frame, mainly be provided with liquid crystal display window and keystroke interface, wherein, be provided with the degree of depth inside casing about 1mm in liquid crystal display window inboard, be used to place insulation spacer, thereby improved anti-impacting with high pressure ability and anti-electromagnetic-radiation interference performance greatly.In the utility model, also be provided with perforate that is used for the indicator light demonstration and the square opening that passes through the data wire of film key on the front panel, and reserved the circular port of a connection switch, can be used for connecting rotary switch, key switch etc.Difference as the case may be can also be provided with other perforates or button on the plate in front, to satisfy actual needs.
Dismantle the pin function module on the back shroud for convenience, back shroud is divided into left and right sides two parts, and use supporting screw respectively on machine case body.Be installed on the switch cubicle and after connecting circuit at microcomputer protecting device; because the current transformer line of sampling module can not arbitrarily take off; therefore take off other modules for convenience, be used for maintenance and safeguard two parts about back shroud is divided into.
In addition, because of using current-voltage transformer, sampling module realizes the conversion of signals of forceful electric power to light current, the secondary current voltage signal radianting capacity that exchanges is strong, easily intelligent processor is caused electromagnetic interference, cause the processor operation exception, therefore use a metallic shield that sampling module is encapsulated, electromagenetic wave radiation is controlled at encapsulation inside, avoid other module is caused interference.
The utility model is independent with each functional module of microcomputer protecting device; realize that the forceful electric power signal separates with weak electric signal; analog and digital signal separates, and the isolation of internal signal and external signal has effectively suppressed insoluble electromagnetic interference problem in microcomputer protecting device.Through test; microcomputer protective relay device by the utility model design; shock resistance voltage capability, anti-electromagnetic interference capability, bear vibration and collision ability etc.; each performance index all satisfy relevant national standard and requirement, and performances such as its electric property, environment and safety verification and electromagnetic compatibility all are up to state standards.The utility model is mainly used in the microcomputer protection system, belongs to the anti-interference casing structure of a kind of microcomputer protecting device.
Description of drawings
Fig. 1 is the structural representation of machine case body in the utility model.
Fig. 2 is a front schematic view of the present utility model.
Fig. 3 is the structural representation of back shroud in the utility model.
The corresponding title of label in the accompanying drawing: the 1-machine case body, the 2-front panel, the 3-rear board, the 4-front plane frame, the 5-perforate, 6-liquid crystal window, 7-degree of depth inside casing, 8-erects shape lines, the supporting screw of 9-, 10-functional module interface.
Embodiment
The utility model is described in further detail below by coming for example.
As Fig. 1～shown in Figure 3, a kind of anti-interference casing structure, comprise machine case body 1, front panel 2 and back shroud 3, back shroud 3 links to each other with machine case body 1 by supporting screw 9, wherein, described machine case body 1 front end is provided with front plane frame 4, and front plane frame 4 links to each other with machine case body 1 by supporting screw 9, and four of frame 4 angles are provided with the perforate 5 that is used for locating on switch cubicle in front; Front panel 2 is arranged in the front plane frame 4, and liquid crystal window 6 inboards of plate 2 are provided with the degree of depth inside casing 7 that is used to place insulation spacer in front, and machine case body 1 inner surface is provided with perpendicular shape lines 8.
In specific implementation process, machine case body 1, front panel 2, rear board 3 and front plane frame 4 have all adopted cold steel technology casting to form, and strengthen the thickness of each parts, improve cabinet anti-ly beat, crash-protective characteristics, machine case body 1 inner surface is provided with several perpendicular shape lines 8 of proper alignment, thereby reduces the influence of pulsed electromagnetic radiation.The liquid crystal window 6 inboard degree of depth inside casings that are provided with of plate 2 are used to place insulation spacer in front, by the effect of insulation spacer, make the antijamming capability of 1 pair of liquid crystal electromagnetic radiation of machine case body strengthen greatly; For satisfying actual needs, also be provided with 8 perforates in front on the plate, be used for the demonstration of indicator light.Back shroud 3 is fixed on the machine case body 1 by supporting screw 9, the dismounting of a functional module for convenience, reduce maintenance and maintenance difficulties, back shroud 3 is divided into left and right sides two parts, thus will be arranged on the rear board each functional module separately, realize that the forceful electric power signal separates with weak electric signal, analog signal is separated with digital signal, internal signal separates with external signal, and the electromagnetic interference that this has also suppressed between each functional module has effectively improved the antijamming capability of whole cabinet.
Claims (3)
1. anti-interference casing structure, comprise machine case body (1), front panel (2) and back shroud (3), back shroud (3) links to each other with machine case body (1) by supporting screw (9), it is characterized in that, described machine case body (1) front end is provided with front plane frame (4), front plane frame (4) links to each other with machine case body (1) by supporting screw (9), and four angles of frame (4) are provided with the perforate (5) that is used for locating on switch cubicle in front; Front panel (2) is arranged in the front plane frame (4), and liquid crystal window (6) inboard of plate (2) is provided with the degree of depth inside casing (7) that is used to place insulation spacer in front, and machine case body (1) inner surface is provided with perpendicular shape lines (8).
2. anti-interference casing structure according to claim 1 is characterized in that, described back shroud (3) is made up of left and right sides two parts, and left and right sides two parts back shroud all is fixed on the machine case body (1) by supporting screw (9).
3. anti-interference casing structure according to claim 1 is characterized in that, each parts of described anti-interference casing structure are the thickening type parts of cast aluminium technology casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200631776U CN201178292Y (en) | 2008-04-25 | 2008-04-25 | Anti-interference machine box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200631776U CN201178292Y (en) | 2008-04-25 | 2008-04-25 | Anti-interference machine box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201178292Y true CN201178292Y (en) | 2009-01-07 |
Family
ID=40218314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200631776U Expired - Fee Related CN201178292Y (en) | 2008-04-25 | 2008-04-25 | Anti-interference machine box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201178292Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862770A (en) * | 2019-03-14 | 2019-06-07 | 四川海特亚美航空技术有限公司 | The anti-interference structure of auxiliary power unit control unit |
-
2008
- 2008-04-25 CN CNU2008200631776U patent/CN201178292Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862770A (en) * | 2019-03-14 | 2019-06-07 | 四川海特亚美航空技术有限公司 | The anti-interference structure of auxiliary power unit control unit |
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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 |
Granted publication date: 20090107 Termination date: 20150425 |
|
| EXPY | Termination of patent right or utility model |