CN202957352U - Lightning protection structure of discharge tube - Google Patents
Lightning protection structure of discharge tube Download PDFInfo
- Publication number
- CN202957352U CN202957352U CN 201220643418 CN201220643418U CN202957352U CN 202957352 U CN202957352 U CN 202957352U CN 201220643418 CN201220643418 CN 201220643418 CN 201220643418 U CN201220643418 U CN 201220643418U CN 202957352 U CN202957352 U CN 202957352U
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- discharge tube
- screw hole
- screw
- lightning protection
- protection structure
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Abstract
The utility model discloses a lightning protection structure of a discharge tube. The lightning protection structure of the discharge tube comprises a casing (1), a stud (2), a printed circuit board (PCB) (3) and a discharge tube (6), wherein the stud is fixedly connected with the bottom surface in a cavity of the casing, the PCB is horizontally arranged at the top of the stud, the discharge tube is arranged on the surface of the PCB, a screw hole (4) is arranged on the PCB, a bonding pad (7) is arranged on a top layer of the screw hole, and a grounding screw (5) penetrates through the screw hole to be fixedly connected with the stud through screw threads. According to the lightning protection structure of the discharge tube, a prior screw hole is replaced by the non-metal screw hole, the bonding pad is merely arranged on the top layer of the non-metal screw hole, the discharge tube is prevented from being repeatedly assembled and disassembled during a withstand voltage insulation test, thereby the production efficiency is improved, and potential quality hazards to products due to human factors are avoided to the maximum.
Description
Technical field
The utility model relates to the power source products field, relates in particular to a kind of lightning protection structure of discharge tube.
Background technology
Lightning protection structure in the existing power supply product generally adopts discharge tube direct ground connection to realize, comprises a printed circuit (PCB) plate, a discharge tube, and an earthing screw hole, the discharge tube on pcb board directly is connected with the earthing screw hole.In actual production, before withstand voltage Insulation test, need discharge tube is disconnected to (namely earth-free), again discharge tube is welded to upper (namely ground connection) after having tested.
The shortcoming of above-mentioned lightning protection structure is: pcb board is packed into after shell, and because there is pad at the pcb board back side, and pad conducts electricity, therefore screw, pad and double-screw bolt, housing contacts, this is equivalent to ground connection of discharge tube.So need artificially to disconnect discharge tube before carrying out withstand voltage Insulation test, and withstand voltage Insulation test needs after completing by the welding of discharge tube breaking part above, to guarantee discharge tube ground connection, so repeatedly, has affected production efficiency.The needed operating space of this lightning protection structure is relatively large simultaneously, and may have some unknowable human factors in operating process, and the tin sweat(ing) produced during as welding causes the hidden danger of quality such as short circuit or welding damage pcb board material between components and parts.
The utility model content
The purpose of this utility model is the defect existed for above-mentioned prior art, proposes a kind of lightning protection structure of discharge tube.
The technical solution adopted in the utility model is, design a kind of lightning protection structure of discharge tube, double-screw bolt, the level that comprise shell, is fixedly connected on the outer shell cavity inner bottom surface be located at the double-screw bolt top pcb board, be located at the discharge tube on pcb board surface, have a screw hole on described pcb board, the screw hole top layer is provided with a pad, and an earthing screw forms a fixed connection by screw thread with double-screw bolt through after screw hole.
Described screw hole is non-metallic hole.
The material of described shell and double-screw bolt adopts aluminium or iron.
The material of described earthing screw adopts steel.
Compared with prior art, the utility model changes screw hole into non-metallic screw hole that top layer only has pad, avoided repeated disassembled and assembled discharge tube when withstand voltage Insulation test, thereby improved production efficiency, the hidden danger of quality of having avoided to the full extent human factor to cause product.
The accompanying drawing explanation
The front view that Fig. 1 is the utility model one embodiment;
Fig. 2 is right view embodiment illustrated in fig. 1;
Fig. 3 is assembling schematic diagram embodiment illustrated in fig. 1.
Embodiment
Below in conjunction with drawings and Examples, utility model is described in detail.
As shown in Figure 1 to Figure 3, the lightning protection structure of the discharge tube the utility model proposes, double-screw bolt 2, the level that comprise shell 1, is fixedly connected on the outer shell cavity inner bottom surface be located at the double-screw bolt top pcb board 3, be located at the discharge tube 6 on pcb board surface, wherein, have a non-metallic screw hole 4 on pcb board, be provided with a pad 7 at the screw hole top layer, earthing screw 5 forms and is threaded with double-screw bolt through screw hole, pcb board is fixed on double-screw bolt simultaneously.
As shown in Figure 3, during actual production, pcb board is packed into after shell, because the PCB back side does not have pad, is equivalent to discharge tube 6 unearthed, can directly carry out withstand voltage Insulation test; After withstand voltage Insulation test finishes, with earthing screw 5, screw hole 4 and shell 1 and double-screw bolt 2 are fixed together again, now earthing screw plain cushion and screw hole surface pads 7 and shell, double-screw bolt are electrically connected, also just be equivalent to discharge tube ground connection, so just avoided the repeated disassembled and assembled discharge tube.
In the present embodiment, the material of shell 1 and double-screw bolt 2 adopts aluminium or iron, and the material of earthing screw 5 adopts steel.
Compared with prior art, the utility model changes screw hole into non-metallic screw hole that top layer only has pad, avoided repeated disassembled and assembled discharge tube when withstand voltage Insulation test, thereby improved production efficiency, the hidden danger of quality of having avoided to the full extent human factor to cause product.
Above-described embodiment is only for illustrating a kind of embodiment of the present utility model.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and variation, these distortion and variation all should belong to protection range of the present utility model.
Claims (4)
1. the lightning protection structure of a discharge tube, it is characterized in that: comprise shell (1), be fixedly connected on the double-screw bolt (2) of outer shell cavity inner bottom surface, the pcb board (3) that level is located at the double-screw bolt top, the discharge tube (6) of being located at the pcb board surface, have a screw hole (4) on described pcb board, the screw hole top layer is provided with a pad (7), and an earthing screw (5) forms a fixed connection by screw thread with double-screw bolt through after screw hole.
2. the lightning protection structure of discharge tube as claimed in claim 1 is characterized in that: described screw hole (4) is non-metallic hole.
3. the lightning protection structure of discharge tube as claimed in claim 1, is characterized in that: material employing aluminium or the iron of described shell (1) and double-screw bolt (2).
4. the lightning protection structure of discharge tube as claimed in claim 1, is characterized in that: the material employing steel of described earthing screw (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220643418 CN202957352U (en) | 2012-11-29 | 2012-11-29 | Lightning protection structure of discharge tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220643418 CN202957352U (en) | 2012-11-29 | 2012-11-29 | Lightning protection structure of discharge tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957352U true CN202957352U (en) | 2013-05-29 |
Family
ID=48462906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220643418 Expired - Fee Related CN202957352U (en) | 2012-11-29 | 2012-11-29 | Lightning protection structure of discharge tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202957352U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972475A (en) * | 2017-04-28 | 2017-07-21 | 茂硕电源科技股份有限公司 | A kind of surge absorption device and power equipment |
| CN107846834A (en) * | 2017-12-04 | 2018-03-27 | 上海小糸车灯有限公司 | Power model |
-
2012
- 2012-11-29 CN CN 201220643418 patent/CN202957352U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106972475A (en) * | 2017-04-28 | 2017-07-21 | 茂硕电源科技股份有限公司 | A kind of surge absorption device and power equipment |
| CN107846834A (en) * | 2017-12-04 | 2018-03-27 | 上海小糸车灯有限公司 | Power model |
| CN107846834B (en) * | 2017-12-04 | 2023-10-20 | 华域视觉科技(上海)有限公司 | Power module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN JINGFUYUAN TECH. CO., LTD. Free format text: FORMER NAME: SHENZHEN JINGFUYUAN TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Shenzhen Nanshan District City, Guangdong province 518000 white pine Luxili Nangang Second Industrial Park 12 Building 1, 2, 5 floor Patentee after: SHENZHEN JINGFUYUAN TECHNOLOGY CO., LTD. Address before: Shenzhen Nanshan District City, Guangdong province 518000 white pine Luxili Nangang Second Industrial Park twelfth 5 floor Patentee before: Shenzhen Jingfuyuan Tech Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20151129 |