CN205196091U - Make things convenient for high -voltage insulation test's lightning grounding hole - Google Patents
Make things convenient for high -voltage insulation test's lightning grounding hole Download PDFInfo
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- CN205196091U CN205196091U CN201520963781.4U CN201520963781U CN205196091U CN 205196091 U CN205196091 U CN 205196091U CN 201520963781 U CN201520963781 U CN 201520963781U CN 205196091 U CN205196091 U CN 205196091U
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- hole
- ground connection
- pad
- connection hole
- pore wall
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Abstract
The utility model discloses a make things convenient for high -voltage insulation test's lightning grounding hole, it is including the PCB board that is equipped with the ground connection hole. The pore wall in ground connection hole is insulating pore wall, the top layer of PCB board is equipped with the hole back gauge of a pad, this pad the lateral separation of the pore wall in ground connection hole is 0.5mm to the minimum. The utility model discloses go up the ground connection hole with PCB and change the non metallization hole into, remove the bottom pad, lateral separation 0.5mm between top layer pad and pore wall. Compared with the prior art, do not need to add in addition insulating measure, 1500VAC's withstand voltage test just can be born in the ground connection hole of lightning protection discharge tube, also can satisfy the needs of ground connection electric property, has simplified process flow greatly, has practiced thrift manufacturing cost and work efficiency.
Description
Technical field
The utility model relates to the design of ground hole in field of power electronics, particularly relates to a kind of lightning protection discharge tube ground hole facilitating voltage-withstand test.
Background technology
In field of power electronics, the use of the Switching Power Supply of band closure and semiclosed shell is almost ubiquitous.The higher Switching Power Supply of general reliability requirement in the design usually all medicine be provided with lightning protection circuit, and lightning protection device and lightning protection discharge tube are composition devices important in lightning protection circuit.In the actual use of power module, lightning protection discharge tube must receive PE just can play effective protective action on the ground.As shown in Figure 1, lightning protection discharge tube is connected to PE ground, normally being connected to by the copper sheet on PCB6 by one end pin of discharge tube is provided with on the pad 3,4 in earthing screw hole 1, finally during assembling by screw fastening, make earthing screw eyelet welding dish and earthing of casing stud 5(PE ground) link together to realize.Usual earthing screw hole is plated-through hole, TOP layer and BOTTOM layer all with the pad 3,4 in earthing screw hole, so after loading onto shell, even if do not play screw, the bottom pad 4 being provided with earthing screw hole also can with earthing of casing stud 5(PE ground) contact.But power module needs through a series of inspection before dispatching from the factory, wherein dielectric voltage withstand test is an important link.Because of the operating characteristic of lightning protection discharge tube, ground hole of discharge tube of this test link can not receive earthing of casing stud (PE ground), otherwise can cause discharge tube discharge test not by.So when testing, need to add insulation measures the ground hole of discharge tube and earthing of casing stud are kept apart just by, therefore make technical process quite complicated.
Utility model content
The utility model is the technical problem that will solve existing lightning protection discharge tube ground hole, propose a kind of do not need special measure just by dielectric voltage withstand test ground hole.
For solveing the technical problem, a kind of lightning protection hole facilitating voltage-withstand test that the utility model proposes, comprises the pcb board being provided with ground hole.The hole wall of described ground hole is insulation hole wall, and the top layer of described pcb board is provided with a conductive welding disk, and the inner port edge of this pad is minimum apart from the lateral separation of the hole wall of described ground hole is 0.5mm.
The utility model changes ground hole on PCB into non-metallic hole, remove bottom pad, between top layer pad and hole wall, interval 0.5mm. compared with prior art, do not need to add insulation measures in addition, the ground hole of lightning protection discharge tube just can bear the dielectric voltage withstand test of 1500VAC, also can meet the needs of ground connection electric property, enormously simplify technological process, save production cost and operating efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described in detail, wherein:
Fig. 1 is the structural representation of existing lightning protection discharge tube ground hole;
Fig. 2 is the structural representation of the utility model preferred embodiment.
Embodiment
Fig. 1 shows the structure of existing lightning protection discharge tube ground hole, and as can be seen from the figure the hole wall 2 of pcb board 6 ground hole 1 is metallized-conductor, is provided with top layer pad 3 and bottom pad 4 simultaneously.Because bottom pad 4 touches earthing of casing stud 5, so cause discharge tube to discharge in voltage-withstand test link and can't pass test.
Fig. 2 shows the structure of the lightning protection discharge tube ground hole of the utility model preferred embodiment, the described lightning protection hole facilitating voltage-withstand test, and it comprises the pcb board 6 being provided with ground hole 1, and the grounding screw 5 of the external shell of lower Founder of ground hole 1.Hole wall 2 surface of described ground hole 1 does not arrange the metal material of any conduction, it is directly the insulation hole wall of pcb board 6, the top layer of pcb board 6 is provided with a conductive welding disk 7, and the inner port edge of this pad 7 is minimum apart from the lateral separation h of the hole wall 2 of described ground hole 1 is 0.5mm.
The utility model changes ground hole on PCB into non-metallic hole, removes bottom pad, interval 0.5mm between top layer pad and hole wall.Compared with prior art, do not need to add insulation measures in addition, the ground hole of lightning protection discharge tube just can bear the dielectric voltage withstand test of 1500VAC, also can meet the needs of ground connection electric property, enormously simplify technological process, save production cost and operating efficiency.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (1)
1. one kind facilitates the lightning protection hole of voltage-withstand test, comprise the pcb board (6) being provided with ground hole (1), it is characterized in that, the hole wall (2) of described ground hole (1) is insulation hole wall, the top layer of described pcb board (6) is provided with a pad (7), and the inner port edge of this pad is minimum apart from the lateral separation (h) of the hole wall (2) of described ground hole (1) is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520963781.4U CN205196091U (en) | 2015-11-26 | 2015-11-26 | Make things convenient for high -voltage insulation test's lightning grounding hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520963781.4U CN205196091U (en) | 2015-11-26 | 2015-11-26 | Make things convenient for high -voltage insulation test's lightning grounding hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205196091U true CN205196091U (en) | 2016-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520963781.4U Active CN205196091U (en) | 2015-11-26 | 2015-11-26 | Make things convenient for high -voltage insulation test's lightning grounding hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205196091U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329162A (en) * | 2016-09-08 | 2017-01-11 | 深圳威迈斯电源有限公司 | Relief device for onboard power supply lightning protection circuit and lightning protection power supply |
| CN111564831A (en) * | 2019-01-26 | 2020-08-21 | 成都圣路电器有限公司 | Power supply surge-proof ground protection circuit breaker |
-
2015
- 2015-11-26 CN CN201520963781.4U patent/CN205196091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329162A (en) * | 2016-09-08 | 2017-01-11 | 深圳威迈斯电源有限公司 | Relief device for onboard power supply lightning protection circuit and lightning protection power supply |
| CN111564831A (en) * | 2019-01-26 | 2020-08-21 | 成都圣路电器有限公司 | Power supply surge-proof ground protection circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |