CN201878469U - Control circuit packaging structure - Google Patents
Control circuit packaging structure Download PDFInfo
- Publication number
- CN201878469U CN201878469U CN201020574699XU CN201020574699U CN201878469U CN 201878469 U CN201878469 U CN 201878469U CN 201020574699X U CN201020574699X U CN 201020574699XU CN 201020574699 U CN201020574699 U CN 201020574699U CN 201878469 U CN201878469 U CN 201878469U
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- CN
- China
- Prior art keywords
- control circuit
- circuit board
- silica gel
- drain pan
- insulating
- 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 relates to a control circuit packaging structure which is characterized in that a control circuit board is placed in the central part of a metal bottom shell, insulating and radiating silica gel is arranged on the upper surface and the lower surface of the control circuit board, the metal bottom shell is filled with the insulating and radiating silica gel, and a high-frequency transformer, a radiator and input and output connectors which are arranged on the control circuit board are exposed out of the silica gel and the metal bottom shell. The control circuit board, the insulating and radiating silica gel and the metal bottom shell are packaged into a modular structure under the solidification effect of the insulating and radiating silica gel. Thereby, the control circuit packaging structure has the advantages that the radiating performance of the control circuit board can be improved, dust or conductive scraps can be effectively prevented from being accumulated on the control circuit board, the reliability of a control circuit can be improved and the technical details of the control circuit can be prevented from leaking.
Description
Technical field
The utility model belongs to the encapsulation of control circuit board.
Background technology
Conventional inversion electric welding machine control circuit comprises multi-output switch power source circuit, pulse-width modulation circuit and drives output circuit three parts, it is on the pcb board that its control circuit element concentrates on printed circuit board (PCB), circuit work frequency is higher, main heater element is switching tube and high frequency transformer, the heat transferred that heater element produces is to radiator, by heat sink radiates in air.Electric component on the pcb board and circuit board are exposed, and the heat that the element during circuit working on the circuit board produces is dispersed in the air.In order to guarantee the operate as normal of heater element, heater element leans on the heat of heat sink radiates element generation usually, and radiator will be occupied the more space of pcb board, makes the size of control circuit board become big; The work under bad environment of inversion welding machine generally speaking, power component in control circuit pcb board and the electric welding machine main circuit is installed in the electric welding machine casing, axial flow blower in the casing is to the power component forced heat radiation, accumulate a large amount of dusts or electrically-conductive debris after working long hours on the pcb board, cause the control circuit fault.
Summary of the invention
The purpose of this utility model just provides a kind of encapsulating structure of control circuit board.
The solution that realizes the utility model purpose is to comprise metal drain pan 4, insulating radiation silica gel 5, particularly be placed with control circuit board 6 at the middle part of metal drain pan 4, in the top and bottom of control circuit board 6 is insulating radiation silica gel 5, insulating radiation silica gel 5 fills up metal drain pan 4, and the high frequency transformer 1, radiator 2, potentiometer adjusting knob 7, the input and output plug connector 3 that are provided with on the control circuit board 6 are exposed at outside insulating radiation silica gel 5 and the metal drain pan 4.
The utility model has the advantages that the solidification of utilizing insulating radiation silica gel, making control circuit board, insulating radiation silica gel and metal drain pan encapsulated moulding is modular construction.The heat transferred that produces during circuit element work is to radiator, the part heat of radiator directly is dispersed in the air, a part of in addition heat by heat sink to insulating radiation silica gel, because the surface area of insulating radiation silica gel is suitable with control circuit board single face area, thermal grease contacts with air, take away the part heat of insulating radiation silica gel, the other part heat of insulating radiation silica gel is delivered to the metal drain pan of control circuit board encapsulation, the metal drain pan links to each other with the electric welding machine metal cabinet, like this, the heat of insulating radiation silica gel finally is delivered to the electric welding machine casing.The control circuit cure package becomes modular structure, can effectively avoid accumulation dust or electrically-conductive debris on the control circuit board, and then cause the control circuit fault, makes control circuit reduce the fault probability of happening under the adverse circumstances operating mode, improves the reliability of control circuit.The ins and outs that prevent control circuit are revealed.
Description of drawings
Fig. 1 is the stereogram after the encapsulation of the present utility model.
Fig. 2 is an encapsulating structure schematic diagram of the present utility model.
Embodiment
According to the shape fabricating metal drain pan 4 of control circuit board 6, the installing hole 7 of metal drain pan 4 is consistent with the installing hole on the control circuit board 6.After control circuit board assembling welding and debugging are finished, at first at the installing hole 7 connector cylindrical bars of metal drain pan 4, the external diameter of cylindrical bar is greater than the fixing screw external diameter of control circuit board 6, casting insulated thermal grease 5 in drain pan 4 then, the insulating radiation silica gel 5 of cast highly is no more than half of metal drain pan 4 height, again control circuit board 6 levels are placed on the insulating radiation silicon 5 glue faces of cast in the metal drain pan 4, casting insulated once more thermal grease 5 is at the component side of control circuit board 6, the face of thick insulating radiation silica gel 5 can a little higher than metal drain pan 4, under capillary effect, insulating radiation silica gel 5 can not overflow drain pan 4.Taking out the cylindrical bar of connector in metal drain pan 5 and control circuit board 6 installing holes before thermal grease 5 full solidification, form through hole at installing hole 6 places of control circuit board 6 and metal drain pan 4.The potentiometer adjusting knob of the high frequency transformer 1 on the control circuit board 6, radiator 2, input and output plug connector 3, adjustment usefulness exposes outside insulating radiation silica gel 5.After insulating radiation silica gel 5 solidifies control circuit board 6 and metal drain pan 4 are packaged into module.Input and output plug connector 3 on the control circuit board 6 is connected with external circuit, and the potentiometer adjusting knob is used for circuit is carried out small adjustment.
Claims (2)
1. the encapsulating structure of a control circuit, comprise metal drain pan (4), insulating radiation silica gel (5), it is characterized in that being placed with control circuit board (6) at the middle part of metal drain pan (4), in the top and bottom of control circuit board (6) is insulating radiation silica gel (5), insulating radiation silica gel (5) fills up metal drain pan (4), and control circuit board (6) is gone up the high frequency transformer (1), radiator (2), the input and output plug connector (3) that are provided with and is exposed at outside insulating radiation silica gel (5) and the metal drain pan (4).
2. according to the encapsulating structure of the said control circuit of claim 1, it is characterized in that said metal drain pan (4) and insulating radiation silica gel (5) are provided with installing hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020574699XU CN201878469U (en) | 2010-10-25 | 2010-10-25 | Control circuit packaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020574699XU CN201878469U (en) | 2010-10-25 | 2010-10-25 | Control circuit packaging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201878469U true CN201878469U (en) | 2011-06-22 |
Family
ID=44166373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020574699XU Expired - Fee Related CN201878469U (en) | 2010-10-25 | 2010-10-25 | Control circuit packaging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201878469U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877629A (en) * | 2017-02-17 | 2017-06-20 | 华为技术有限公司 | A kind of power supply adaptor of pin radiating |
| CN108644743A (en) * | 2018-05-31 | 2018-10-12 | 深圳实现创新科技有限公司 | A kind of daylight lamp circuit plate encapsulating structure |
-
2010
- 2010-10-25 CN CN201020574699XU patent/CN201878469U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877629A (en) * | 2017-02-17 | 2017-06-20 | 华为技术有限公司 | A kind of power supply adaptor of pin radiating |
| CN108644743A (en) * | 2018-05-31 | 2018-10-12 | 深圳实现创新科技有限公司 | A kind of daylight lamp circuit plate encapsulating structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20131025 |