CN208158975U - Printed circuit board, ground structure and Switching Power Supply - Google Patents
Printed circuit board, ground structure and Switching Power Supply Download PDFInfo
- Publication number
- CN208158975U CN208158975U CN201820583556.1U CN201820583556U CN208158975U CN 208158975 U CN208158975 U CN 208158975U CN 201820583556 U CN201820583556 U CN 201820583556U CN 208158975 U CN208158975 U CN 208158975U
- Authority
- CN
- China
- Prior art keywords
- printed circuit
- circuit board
- conductive sheet
- hole
- screw
- 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.)
- Active
Links
Landscapes
- Structure Of Printed Boards (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Abstract
The utility model provides a kind of printed circuit board, ground structure and Switching Power Supply, has windowing on the printed circuit board, and has ground connection copper foil in the windowing；The printed circuit board further includes conductive sheet；The back side of the conductive sheet is welded in the windowing of the printed circuit board by Reflow Soldering and is conductively connected with the ground connection copper foil, and the front of the conductive sheet protrudes from the surface of the printed circuit board.The utility model is welded to the conductive sheet in the windowing of printed circuit board by the back side, realizes the ground connection of printed circuit board, while improving assembly efficiency, realizes the rigid connection of ground structure, makes to be grounded relatively reliable.
Description
Technical field
The utility model relates to ground structures, more specifically to a kind of printed circuit board, ground structure and switch electricity
Source.
Background technique
Currently, cathode generallys use copper bar (copper sheet) connection chassics earth in DC-DC (DC-DC) Switching Power Supply
Or PCB (Printed Circuit Board, printed circuit board) windowing dew copper connects chassics earth.
However, there are following defects for above two negative maximum current earthing scheme：
For copper bar grounding scheme：Copper bar on PCB, is then locked at machine by screw by Wave crest Welding by copper bar
It is rigidly grounded on shell, ground connection is reliable.But in the program, copper bar needs artificial plug-in unit, and the degree of automation is low, and assembly efficiency is low, and
And since high current need to be connected, copper bar is larger, and Material Cost is higher；
PCB windowing dew copper grounding scheme：PCB and chassis contact face windowing dew copper, and by screw in compression PCB, make on PCB
Windowing at copper foil and chassis contact.But PCB generallys use FR-4 organic material, and rigidity is insufficient, in long-term use process,
PCB material will appear softening, and lead to screw loosening, and the contact resistance of ground connection is caused to become larger.
Utility model content
The technical problem to be solved by the present invention is to cannot be considered in terms of cost and reliability for above-mentioned ground structure
Problem provides a kind of new printed circuit board, ground structure and Switching Power Supply.
The technical solution that the utility model solves above-mentioned technical problem is to provide a kind of printed circuit board, the printing electricity
There is windowing on the plate of road, and there is ground connection copper foil in the windowing；The printed circuit board further includes conductive sheet；The conductive sheet
The back side be welded in the windowing of the printed circuit board by Reflow Soldering and be conductively connected with the ground connection copper foil, and described lead
The front of electric piece protrudes from the surface of the printed circuit board.
In printed circuit board described in the utility model, the windowing position of the printed circuit board be equipped at least one the
One through-hole, and there is at least one second through-hole corresponding with the first through hole on the conductive sheet；The first through hole
Diameter is greater than the head of screw of the first screw or the diameter of gasket, and the diameter of second through-hole is less than the head of screw or gasket
Diameter.
In printed circuit board described in the utility model, the windowing position of the printed circuit board be equipped at least one the
Three through-holes；There is at least one fourth hole corresponding with the third through-hole, and the third through-hole on the conductive sheet
Diameter is less than the head of screw of first screw or the diameter of gasket.
In printed circuit board described in the utility model, the back side of the conductive sheet is smooth, and the conductive sheet is embedded in
The windowing.
In printed circuit board described in the utility model, the back side of the conductive sheet has boss, and the boss is embedding
Enter the windowing.
The utility model also provides a kind of ground structure, including printed circuit board as described above and casing；The machine
There is grounded parts, and when the printed circuit board is fixed on the casing on shell, the front of the conductive sheet connects with described
The connection of ground components conductive.
In ground structure described in the utility model, there is screw hole, and the printing on the grounded parts of the casing
Conductive sheet on circuit board is connected and fixed by the first screw and the grounded parts, and the shaft of first screw passes through
The first through hole and the second through-hole are simultaneously threadedly coupled to the screw hole.
In ground structure described in the utility model, there is multiple Nut columns, the printed circuit board on the casing
It is upper that there are multiple fixation holes corresponding with the Nut column, and the printed circuit board is fixed on casing by the second screw,
Second screw passes through the fixation hole and is threadedly coupled to the Nut column.
In ground structure described in the utility model, the grounded parts protrudes from the surface of the casing, and described
There is groove on grounded parts；The shape and size of the groove are matched with the positive shape and size of the conductive sheet, and institute
The depth for stating groove protrudes from the size of the printed circuit board surface less than the front of the conductive sheet.
The utility model also provides a kind of Switching Power Supply, including printed circuit board and printed circuit board as described above connect
Ground structure.
The printed circuit board, ground structure and Switching Power Supply of the utility model have the advantages that：It is welded by the back side
The conductive sheet being connected in the windowing of printed circuit board realizes the ground connection of printed circuit board, real while improving assembly efficiency
The rigid connection for having showed ground structure makes to be grounded relatively reliable.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model printed circuit board embodiment；
Fig. 2 is the schematic diagram of the utility model ground structure embodiment.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figure 1, being the schematic diagram of the utility model printed circuit board embodiment, can weld on the printed circuit board more
A electronic component, and multiple electronic component is conductively connected by the copper foil on printed circuit board, it is special to realize corresponding function
Not, which may be implemented DC converting.Have on printed circuit board 1 in the present embodiment
Windowing (i.e. removal solder mask), and with ground connection copper foil, (the ground connection copper foil can be used as circuit in printed circuit board 1 in the windowing
With reference to ground).Above-mentioned printed circuit board 1 further includes conductive sheet 13, and the back side of the conductive sheet 13 is (i.e. towards the one of printed circuit board 1
Face) it is welded in the windowing of printed circuit board 1 by Reflow Soldering and is conductively connected with the ground connection copper foil in windowing.It is being connected to print
After printed circuit board 1, the front (i.e. backwards to the one side of printed circuit board 1) of conductive sheet 13 protrudes from the surface of printed circuit board 1.
Specifically, it when conductive sheet 13 is welded to printed circuit board 1, can first be printed in the windowing position of printed circuit board 1
Brush tin cream, and copper sheet is sticked by machine, then cross the welding that conductive sheet 13 is realized in Reflow Soldering.
Above-mentioned conductive sheet 13 can have the metal of preferable electric conductivity using copper etc., and the conductive sheet 13 has preferably
Rigidity.When printed circuit board 1 is fixed, the ground connection (being conductively connected with casing) of printed circuit board 1 is realized by conductive sheet 13.
Since conductive sheet 13 can be not necessarily to artificial plug-in unit, improve automation, mention by chip mounter automatic welding on the printed circuit board 1
Assembly efficiency is risen；And since the front of conductive sheet 13 protrudes from the surface of printed circuit board 1, and conductive sheet 13 as rigid
Property, therefore be grounded reliable.
As shown in Fig. 2, the windowing position of printed circuit board 1 can be equipped with extremely to realize that conductive sheet 13 is reliably conductively connected
A few first through hole 111, and then there is at least one second through-hole 131 corresponding with first through hole 111 on conductive sheet 13, and
The diameter of first through hole 111 is greater than the head of screw of the first screw 15 or the diameter of gasket, and the diameter of the second through-hole 131 is then less than
The head of screw of first screw 15 or the diameter of gasket.In this way, 15 (packet of the first screw can be made when realizing the ground connection of conductive sheet 13
Include head of screw and gasket) it passes through first through hole 111 and is crimped onto after conductive sheet 13 and be fixed to casing (or the conductive part on casing
Part), i.e. the front side conductive in addition to conductive sheet 13 can also pass through the first screw 15 and realize and is conductively connected.
In addition, at least one also settable third through-hole 112 of the windowing position of printed circuit board 1, and have on conductive sheet 13
There is at least one fourth hole 132 corresponding with third through-hole 12, and the diameter of third through-hole 112 is less than the spiral shell of the first screw 15
The diameter of ailhead or gasket.With this configuration, the first screw 15 may pass through third through-hole 112 and fourth hole 132 realizes printing
The fixation of circuit board 1 and conductive sheet 13 avoids conductive sheet 13 from falling off from printed circuit board 1.
Particularly, the back side of conductive sheet 13 is smooth, and the windowing on the conductive sheet 13 insertion printed circuit board 1, to protect
The back side of card ground connection copper foil and conductive sheet 13 is reliably connected.Similarly, the back side for guarantee ground connection copper foil and conductive sheet 13 is reliable
Connection can also make the back side of conductive sheet 13 have boss, and the windowing on boss insertion printed circuit board 1.
As shown in Fig. 2, the utility model also provides a kind of ground structure, which includes printing electricity as described above
Road plate 1 and casing 3；There is grounded parts 31, and when printed circuit board 1 is fixed on casing 3 on the casing 3, conductive sheet 13
Front with grounded parts 31 be conductively connected.
Specifically, there is screw hole 311, and the conductive sheet 13 on printed circuit board 1 passes through the on the grounded parts 31 of casing 3
One screw 15 is connected and fixed with grounded parts, and the shaft of above-mentioned first screw 15 passes through first through hole 111 and the second through-hole
131 and it is threadedly coupled to screw hole 311, the head of screw (may include gasket) of the first screw 15 is then crimped on the back side of conductive sheet 13.
In addition, also the first screw 15 can be used to pass through third through-hole 112 and fourth hole 132 and be threadedly coupled to screw hole
311, to conductive sheet 13 is clamped between printed circuit board 1 and the grounded parts 31 of casing 3, to avoid conductive sheet
13 fall off from printed circuit board 1, improve the stability of the grounding connection of printed circuit board 1.
Printed circuit board 1 itself can be fixed to casing 3 in the following manner：Multiple Nut columns 32 are set on casing 3, are printed
Multiple fixation holes 14 corresponding with Nut column 32 are then equipped on printed circuit board 1, printed circuit board 1 is fixed on machine by the second screw
On shell 3, above-mentioned second screw passes through fixation hole 14 and is threadedly coupled on Nut column 32.
Particularly, the grounded parts 31 on casing 3 protrudes from the surface (inner surface) of casing 3, and grounded parts 31
It is upper that there is groove 312 (bottom that screw hole 311 is located at groove 12).The shape and size and conductive sheet 13 of above-mentioned groove 312 are just
The shape and size in face match, and the depth of groove 312 protrudes from the ruler on 1 surface of printed circuit board less than the front of conductive sheet 13
It is very little.By changing structure, the location and installation of printed circuit board 1 can be not only realized, but also conductive sheet 13 and grounded parts 31 can be improved
The stability of connection.
The utility model also provides a kind of Switching Power Supply, which includes printed circuit board and print as described above
Printed circuit board ground structure.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (10)
1. a kind of printed circuit board, there is windowing on the printed circuit board, and there is ground connection copper foil in the windowing；Its feature
It is, the printed circuit board further includes conductive sheet；The back side of the conductive sheet is welded on the printed circuit by Reflow Soldering
It is conductively connected in the windowing of plate and with the ground connection copper foil, and the front of the conductive sheet protrudes from the table of the printed circuit board
Face.
2. printed circuit board according to claim 1, which is characterized in that the windowing position of the printed circuit board is equipped with extremely
A few first through hole, and there is at least one second through-hole corresponding with the first through hole on the conductive sheet；Described
The diameter of one through-hole is greater than the head of screw of the first screw or the diameter of gasket, and the diameter of second through-hole is less than the head of screw
Or the diameter of gasket.
3. printed circuit board according to claim 2, which is characterized in that the windowing position of the printed circuit board is equipped with extremely
A few third through-hole, and there is at least one fourth hole corresponding with the third through-hole on the conductive sheet；Described
The diameter of three through-holes is less than the head of screw of first screw or the diameter of gasket.
4. printed circuit board according to claim 1, which is characterized in that the back side of the conductive sheet is smooth, and described leads
Electric piece is embedded in the windowing.
5. printed circuit board according to claim 1, which is characterized in that the back side of the conductive sheet has boss, and institute
It states boss and is embedded in the windowing.
6. a kind of ground structure, which is characterized in that including printed circuit board as claimed in claim 2 and casing；The machine
There is grounded parts, and when the printed circuit board is fixed on the casing on shell, the front of the conductive sheet connects with described
The connection of ground components conductive.
7. ground structure according to claim 6, which is characterized in that there is screw hole on the grounded parts of the casing, and
Conductive sheet on the printed circuit board is connected and fixed by the first screw and the grounded parts, the stud of first screw
It partially passes through the first through hole and the second through-hole and is threadedly coupled to the screw hole.
8. ground structure according to claim 6, which is characterized in that have multiple Nut columns, the print on the casing
There are multiple fixation holes corresponding with the Nut column, and the printed circuit board is fixed on by the second screw on printed circuit board
On casing, second screw passes through the fixation hole and is threadedly coupled to the Nut column.
9. ground structure according to claim 6, which is characterized in that the grounded parts protrudes from the table of the casing
Face, and there is groove on the grounded parts；The shape and size of the groove and the positive shape and size of the conductive sheet
Matching, and the depth of the groove protrudes from the size of the printed circuit board surface less than the front of the conductive sheet.
10. a kind of Switching Power Supply, which is characterized in that including printed circuit board and as described in any one of claim 6-9
Ground structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820583556.1U CN208158975U (en) | 2018-04-23 | 2018-04-23 | Printed circuit board, ground structure and Switching Power Supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820583556.1U CN208158975U (en) | 2018-04-23 | 2018-04-23 | Printed circuit board, ground structure and Switching Power Supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208158975U true CN208158975U (en) | 2018-11-27 |
Family
ID=64376229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820583556.1U Active CN208158975U (en) | 2018-04-23 | 2018-04-23 | Printed circuit board, ground structure and Switching Power Supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208158975U (en) |
-
2018
- 2018-04-23 CN CN201820583556.1U patent/CN208158975U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102689065B (en) | A kind of welding method of circuit board element | |
| WO1999034380A3 (en) | Flat electrolytic capacitor | |
| CA2672882A1 (en) | Low profile surface mount poke-in connector | |
| CN102123562B (en) | Method for manufacturing metal substrate by adopting reflow soldering | |
| CN208158975U (en) | Printed circuit board, ground structure and Switching Power Supply | |
| JP2007208137A (en) | Electricity storage device and mounter | |
| CN203984775U (en) | A kind of for overcurrent structure between stacking PCBA plate | |
| CN201986265U (en) | Flexible circuit board | |
| CN215073225U (en) | Circuit board and electronic equipment | |
| CN204966286U (en) | Can provide condenser that metal spraying face carries out surface mounting | |
| CN204029663U (en) | SMD elastomer touch-switch | |
| CN207884966U (en) | A kind of PCB circuit board structure | |
| CN207884973U (en) | A kind of pad using ink spray plane | |
| CN202026529U (en) | Printed circuit board | |
| CN209213486U (en) | A kind of integrated LED | |
| CN206302448U (en) | Mobile terminal | |
| CN209949518U (en) | Grounding structure of printed circuit board and direct current converter | |
| CN206003977U (en) | A kind of battery connector | |
| CN108711513A (en) | A kind of method and structure for preventing more pin capacitances anti-inserted | |
| CN212587743U (en) | LED waterproof soldering-free connector | |
| CN200941325Y (en) | Surface attaching positive coefficient thermistor | |
| CN218163026U (en) | Circuit board with detachable welding disc | |
| CN205124128U (en) | Novel SMT paster | |
| CN206992341U (en) | Direct current charging connector female seat | |
| CN214588265U (en) | Resistor and its foot piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |