CN203368297U - Mounting structure for power tube of switching power supply - Google Patents
Mounting structure for power tube of switching power supply Download PDFInfo
- Publication number
- CN203368297U CN203368297U CN 201320425811 CN201320425811U CN203368297U CN 203368297 U CN203368297 U CN 203368297U CN 201320425811 CN201320425811 CN 201320425811 CN 201320425811 U CN201320425811 U CN 201320425811U CN 203368297 U CN203368297 U CN 203368297U
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- China
- Prior art keywords
- power tube
- circuit board
- radiator
- jack
- board
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a mounting structure for a power tube of a switching power supply. The mounting structure comprises a housing, a circuit board and two sets of power tube assemblies, wherein the power tube assemblies comprise power tubes fixed on the front side of radiators and the radiators, the radiators of the two sets of power tube assembly are respectively fixed on the inner surfaces of the two opposite sidewalls of the housing, and the pins of the power tubes and fixing pins of the radiators are respectively welded in jacks in the circuit board. The circuit board comprises a PCB fixed on the housing and a ridge-flexible board, of which one end is connected with the other end of the PCB. The pins of the first power tube assembly and fixing pins of the radiators are respectively welded in jacks in the PCB, and the pins of the second power tube assembly and fixing pins of the radiators are respectively welded in jacks in the other end of the ridge-flexible board, The ridge-flexible board effectively offsets assembling stress and shear stress, satisfies fixing requirement under high vibration conditions, and effectively prolongs the service lifetime and improves the heat conduction reliability of the product.
Description
[technical field]
The utility model relates to Switching Power Supply, relates in particular to a kind of switch power supply power tube mounting structure.
[background technology]
The driving of using in power supply product or the power tube of rectification (metal-oxide-semiconductor or diode, here be commonly referred to as power tube) usually need to be attached on casing inner wall and be dispelled the heat, some power tubes because of two sides that need to often be installed on the U-shaped housing of function module design ' as shown in Figure 1, usually the power tube heat sink conception adopted is in two sides of U-shaped housing 1, to utilize radiator 2 first to assemble power tube 3(power tube 3 can adopt screw fastening toward assembling on radiator 2, adhesive film is bonding, bonding or other mounting meanss of bonded adhesives) after, again the pin of the fixing feet of radiator 2 and power tube 3 is welded to respectively on pcb board 8, form the PCB assembly, finally the PCB assembled is arrived in U-shaped housing 1, with radiator hold-down screw 5, radiator is fixed on the sidewall 101 of U-shaped housing 1.
The power tube installation structure of this conventional rigid is because the width of U-shaped housing sidewall inside is slightly wider than the distance between two radiator installed surfaces, usually leave gap between the two, so that the installation of PCB assembly, simultaneously because there is the build-up tolerance of allowance for finish, power tube and PCB, these tolerances and gap required power pipe 3 pins make up by distortion, power tube pin so long-term work, under the effect of larger stress, easily produce the risk fractureed; The risk that also can bring power tube to come off for bonding power tube, cause the power tube failure.
In order to address the above problem, as shown in Figures 2 and 3, the common way of industry is that the pin of power tube 301 is curved to overhanging Z-shaped or lengthening, and these methods only can reduce the part stress of power tube pin, can not eliminate the risk of the excessive generation of power tube pin stress.
[summary of the invention]
The technical problems to be solved in the utility model is to provide a kind ofly can eliminate the high switch power supply power tube mounting structure of power tube pin stress, power tube heat radiation reliability.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is that a kind of switch power supply power tube mounting structure, comprise housing, circuit board and two group power assemblies, the power tube assembly comprises power tube and radiator, and power tube is fixed on the front of radiator; Housing comprises two relative sidewalls, two group power assembly radiating devices are separately fixed at the inner surface of two opposing sidewalls, the pin of power tube and the fixing feet of radiator are welded on respectively in the jack of circuit board, described circuit board comprises pcb board and hard and soft board, pcb board is fixed on housing, and an end of pcb board comprises the jack of power tube pin and the jack of radiator fixed foot; One end of hard and soft board is connected with the other end of pcb board, and the other end of hard and soft board comprises the jack of power tube pin and the jack of radiator fixed foot; The pin of the first power tube component power pipe and the fixing feet of radiator are welded on respectively in the jack of pcb board, and the pin of the second power tube component power pipe and the fixing feet of radiator are welded on respectively in the jack of hard and soft board.
Above-described switch power supply power tube mounting structure, described hard and soft board comprises the first rigid circuit board, the second rigid circuit board and flexible PCB, the first rigid circuit board is connected with the second rigid circuit board by flexible PCB; The first rigid circuit board is connected with pcb board, and the second rigid circuit board comprises the jack of power tube pin and the jack of radiator fixed foot, and the pin of the second power tube component power pipe and the fixing feet of radiator are welded on respectively in the jack of the second rigid circuit board.
Above-described switch power supply power tube mounting structure, described housing comprises base plate, and the described pcb board of housing that two relative sidewalls of described base plate and housing form the U font is fixed on base plate by the support column on base plate, and the second rigid circuit board is unsettled.
The utility model switch power supply power tube mounting structure utilizes hard and soft board effectively to offset erection stress and shear stress, meet the fixedly requirement under high vibration condition simultaneously, eliminated the destruction of stress and the conductive structure of power tube, make power tube installation structure solid and reliable, effectively improve the life-span of product and the reliability of heat conduction.
[accompanying drawing explanation]
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the front view of prior art switch power supply power tube mounting structure.
Fig. 2 is the front view of the utility model embodiment switch power supply power tube mounting structure.
Fig. 3 is the partial enlarged drawing at A position in Fig. 2.
[embodiment]
The utility model embodiment switch power supply power tube mounting structure as shown in Figures 2 and 3, comprises housing 1, pcb board 8, hard and soft board 6 and two group power assemblies.
As shown in Figure 2, housing 1 comprises base plate 102 and two relative sidewalls 101, and the sidewall 101 that base plate 102 is relative with two forms the housing 1 of U font.Pcb board 8 is fixed on housing 1 by the support column 103 on base plate 102.
Every group power assembly comprises power tube 3(MOS pipe or diode, is referred to as power tube) and radiator 2, power tube 3 is screwed the front of radiator 2; The radiator 2 of two group power 3 assemblies is fixed on respectively the inner surface of two opposing sidewalls 101 with screw 5, the pin 301 of right side power tube 3 and the fixing feet 201 of radiator 2 are welded on respectively in the jack on pcb board 8 right sides.
Hard and soft board 6 is formed by the first rigid circuit board 601, the second rigid circuit board 603 and flexible PCB 602 pressings, and the first rigid circuit board 601 is connected with the second rigid circuit board 603 by flexible PCB 602.
The first rigid circuit board 601 welds with the left end of pcb board, and the second rigid circuit board 603 is unsettled.
The jack of power tube pin and the jack of radiator fixed foot are arranged on the second rigid circuit board 603, and the pin 301 of left side power tube 3 and the fixing feet 201 of radiator 2 are welded on respectively in the jack of the second rigid circuit board 603.
The hard and soft board of the above embodiment of the utility model is that rigid circuit board and flexible board pressing form, and interlude is flexible circuit board, and the rigid circuit board of two ends is convenient to welding, middle flexible buffer stress.
The above embodiment of the utility model utilizes hard and soft board effectively to offset erection stress and shear stress, meet the fixedly requirement under high vibration condition simultaneously, eliminate the stress of power tube and the destruction of conductive structure, make power tube installation structure solid and reliable, effectively improve the life-span of product and the reliability of heat conduction.
Claims (3)
1. a switch power supply power tube mounting structure, comprise housing, circuit board and two group power assemblies, and the power tube assembly comprises power tube and radiator, and power tube is fixed on the front of radiator; Housing comprises two relative sidewalls, two group power assembly radiating devices are separately fixed at the inner surface of two opposing sidewalls, the pin of power tube and the fixing feet of radiator are welded on respectively in the jack of circuit board, it is characterized in that, described circuit board comprises pcb board and hard and soft board, pcb board is fixed on housing, and an end of pcb board comprises the jack of power tube pin and the jack of radiator fixed foot; One end of hard and soft board is connected with the other end of pcb board, and the other end of hard and soft board comprises the jack of power tube pin and the jack of radiator fixed foot; The pin of the first power tube component power pipe and the fixing feet of radiator are welded on respectively in the jack of pcb board, and the pin of the second power tube component power pipe and the fixing feet of radiator are welded on respectively in the jack of hard and soft board.
2. switch power supply power tube mounting structure according to claim 1, it is characterized in that, described hard and soft board comprises the first rigid circuit board, the second rigid circuit board and flexible PCB, and the first rigid circuit board is connected with the second rigid circuit board by flexible PCB; The first rigid circuit board is connected with pcb board, and the second rigid circuit board comprises the jack of power tube pin and the jack of radiator fixed foot, and the pin of the second power tube component power pipe and the fixing feet of radiator are welded on respectively in the jack of the second rigid circuit board.
3. switch power supply power tube mounting structure according to claim 1, it is characterized in that, described housing comprises base plate, the described pcb board of housing that two relative sidewalls of described base plate and housing form the U font is fixed on base plate by the support column on base plate, and the second rigid circuit board is unsettled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320425811 CN203368297U (en) | 2013-07-17 | 2013-07-17 | Mounting structure for power tube of switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320425811 CN203368297U (en) | 2013-07-17 | 2013-07-17 | Mounting structure for power tube of switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368297U true CN203368297U (en) | 2013-12-25 |
Family
ID=49816013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320425811 Expired - Fee Related CN203368297U (en) | 2013-07-17 | 2013-07-17 | Mounting structure for power tube of switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203368297U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275122A (en) * | 2019-04-23 | 2019-09-24 | 上海超导科技股份有限公司 | Superconduction belt material critical current test device and test method |
| CN113823974A (en) * | 2021-11-23 | 2021-12-21 | 四川华丰科技股份有限公司 | Miniature connector assembly |
-
2013
- 2013-07-17 CN CN 201320425811 patent/CN203368297U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275122A (en) * | 2019-04-23 | 2019-09-24 | 上海超导科技股份有限公司 | Superconduction belt material critical current test device and test method |
| CN110275122B (en) * | 2019-04-23 | 2021-07-13 | 上海超导科技股份有限公司 | Superconducting tape critical current testing device and testing method |
| CN113823974A (en) * | 2021-11-23 | 2021-12-21 | 四川华丰科技股份有限公司 | Miniature connector assembly |
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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: 20131225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |