CN108347823A - A kind of pcb board that is conveniently adjusted is tightened up a screw the structure whether hole be grounded - Google Patents
A kind of pcb board that is conveniently adjusted is tightened up a screw the structure whether hole be grounded Download PDFInfo
- Publication number
- CN108347823A CN108347823A CN201810097048.7A CN201810097048A CN108347823A CN 108347823 A CN108347823 A CN 108347823A CN 201810097048 A CN201810097048 A CN 201810097048A CN 108347823 A CN108347823 A CN 108347823A
- Authority
- CN
- China
- Prior art keywords
- pcb board
- screw
- grounded
- hole
- pcb
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0215—Grounding of printed circuits by connection to external grounding means
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structure Of Printed Boards (AREA)
Abstract
The invention discloses a kind of pcb boards that is conveniently adjusted to tighten up a screw the structure whether hole be grounded, including controllably upper key device, and the screw hole on pcb board, the holes VIA, pcb board is grounded equipped with pcb board, pcb board is grounded metal chassis or cage connection with server, several holes VIA are set to screw hole periphery, the endoporus of the screw hole is equipped with metal coating, on pcb board metal foil is equipped with around the surface of screw hole, one end of metal foil is connect with metal coating, the other end is connect with controllable upper key device one end, controllably the upper key device other end is connect with the holes VIA.Invention by shorted device come tighten up a screw to PCB hole and the ground PCB conducting whether carry out artificially selecting control, ground connection of the screw hole on PCB can flexibly be controlled, can be according to actual test situation, the convenient conduction for controlling pcb board and cabinet or shell, so that product meets EMC test requests.
Description
Technical field
The present invention relates to pcb board grounded parts technical field more particularly to one kind be conveniently adjusted pcb board tighten up a screw hole whether
The structure of ground connection.
Background technology
With the arrival in big data epoch, server product quickly grows emergence, in the design of server product, by
In the complexity and diversity of circuit the satisfaction of electromagnetic compatibility is increasingly difficult to, in the design of some chips, due to chip
Conducted noise itself is very high, needs the GND of screw hole and pcb board nearby to disconnect instead, that is, not with the ground of PCB in master
It is connected on plate, it is therefore desirable to which the structures and methods of traveling pedestrian in order to control are connected using the hole that can tighten up a screw to mainboard.
In the design of PCB, screw hole surface spreads copper, is then attached by the holes VIA and inside GND.The prior art
Middle screw hole use grounding screw hole or the unearthed screw hole structure of floating, and the prior art why be unable to control ground connection with
It is no, it is because its conducting is VIA air-ground, the holes VIA are that control when can not be made by PCB carries out management and control, existing to ask
Topic is can not flexibly to regulate and control screw hole according to demand whether the ground connection on PCB.
Invention content
Aiming at deficiencies of the prior art, providing one kind and being conveniently adjusted pcb board hole of tightening up a screw is the present invention
The structure of no ground connection；The configuration of the present invention is simple, connects easy to adjust reliable, is tightened up a screw hole and PCB to PCB by shorted device
It carries out artificially selecting control whether the conducting on ground, can flexibly control ground connection of the screw hole on PCB, it can be according to practical survey
Try situation, the convenient conduction for controlling pcb board and cabinet or shell, so that product meets EMC test requests.
The present invention solve technical problem technical solution be：
A kind of pcb board that is conveniently adjusted is tightened up a screw the structure whether hole be grounded, including controllably upper key device, and is set to PCB
Screw hole, the holes VIA on plate, pcb board are grounded equipped with pcb board, and pcb board ground wire and the metal chassis or shell of server connect
It connects, several holes VIA are set to screw hole periphery, and the endoporus of the screw hole is equipped with metal coating, around spiral shell on pcb board
The surface of wire hole is equipped with metal foil, and one end of metal foil is connect with metal coating, the other end is connect with controllable upper key device one end,
Controllably the upper key device other end is connect with the holes VIA.
The pcb board is multi-layer PCB board.
The controllably upper key device is 0 Ohmic resistance.One end of 0 Ohmic resistance passes through in the connection PCB of the holes VIA
The other end on ground, 0 Ohmic resistance is connect with metal foil, and metal foil is connect with metal coating.
The controllably upper key device is short circuit tin point.
The controllably upper key device is capacitance, magnetic bead or inductance.
The metal coating is copper coating.
The hole wall cylindrical surface in the holes VIA is equipped with copper coating.
The metal foil is copper foil.
Beneficial effects of the present invention：
1. the configuration of the present invention is simple, connect it is easy to adjust reliable, by shorted device come to PCB with tightening up a screw hole and PCB
Conducting whether carry out artificially select control, can flexibly control ground connection of the screw hole on PCB, can be according to actual test
Situation, the convenient conduction for controlling pcb board and cabinet or shell, so that product meets EMC test requests, the present invention is especially suitable
Together in complicated and various circuit multi-layer PCB board server architecture, meet the needs of electromagnetic compatibility, reduces chip conduction itself and make an uproar
Sound.
2. the present invention by using 0 Ohmic resistance or short circuit tin point control screw hole ground connection property, in 0 Europe
By VIA the ground in the connection PCB of hole, the other end are connected directly between the conduction of screw hole for one end of nurse resistance or short circuit tin point
On copper, by 0 Ohmic resistance of upper key or short circuit tin point, it can easily control whether screw hole is connected with the ground of PCB, or
Electrically connected device can be reached.
3. according to actual test situation, 0 Ohmic resistance or short circuit tin point are replaced with into capacitance, magnetic bead or inductance, so as to
The conduction that pcb board and cabinet or shell can easily be controlled, so that product meets EMC test requests.
Description of the drawings
Fig. 1 schematic structural views of the invention.
Specific implementation mode
For a better understanding of the present invention, embodiments of the present invention are explained in detail below in conjunction with the accompanying drawings.It should be understood that this
It is a little that examples are only for illustrating the present invention and not for limiting the scope of the present invention.
In conjunction with Fig. 1, the invention discloses a kind of pcb boards that is conveniently adjusted to tighten up a screw the structure whether hole be grounded, including controllable
Upper key device 4, and the screw hole 2 on pcb board 1, the holes VIA 3, pcb board equipped with pcb board be grounded, pcb board ground wire with
The metal chassis or cage connection of server, several holes VIA are set to screw hole periphery, and the endoporus of the screw hole is equipped with
Metal coating 21, metal foil 5 is equipped on pcb board around the surface of screw hole, and one end of metal foil connect with metal coating, is another
One end is connect with controllable upper key device one end, and controllably upper 4 other end of key device is connect with the holes VIA.
The pcb board is multi-layer PCB board, and metal foil is respectively equipped between the multi-layer PCB board.
The present invention by shorted device come tighten up a screw to PCB hole and the ground PCB conducting whether carry out artificially selecting control, energy
Ground connection of enough flexible control screw holes on PCB, can according to actual test situation, it is convenient control pcb board and cabinet or
The conduction of shell, so that product meets EMC test requests, invention is particularly suitable for complicated and various circuit multi-layer PCB board
Server architecture meets the needs of electromagnetic compatibility, reduces chip conducted noise itself.
The controllably upper key device 4 is 0 Ohmic resistance.One end of 0 Ohmic resistance passes through in the connection PCB of the holes VIA
The other end on ground, 0 Ohmic resistance is connect with metal foil 5, and metal foil is connect with metal coating.
The controllably upper key device is short circuit tin point.
The controllably upper key device is capacitance, magnetic bead or inductance.Once electrically connected device can be reached.
The present invention by using 0 Ohmic resistance or short circuit tin point control screw hole ground connection property, at 0 ohm
By VIA the ground in the connection PCB of hole, the other end are connected directly between the conductive copper of screw hole for one end of resistance or short circuit tin point
On, by 0 Ohmic resistance of upper key or short circuit tin point, it can easily control whether screw hole is connected with the ground of PCB, Huo Zheneng
Enough reach electrically connected device.
Certainly 0 Ohmic resistance or short circuit tin point can be replaced with into capacitance, magnetic bead or inductance according to actual test situation,
So as to the conduction of pcb board and cabinet or shell easily be controlled, so that product meets EMC test requests.
The metal coating is copper coating.
The hole wall cylindrical surface in the holes VIA is equipped with copper coating.
The metal foil is copper foil.
It, for those of ordinary skill in the art, can be with although the present invention has shown that and describe the embodiment of the present invention
A variety of change, modification, replacement and modification can be carried out in the case where not departing from the principle and spirit of the invention to these embodiments by understanding,
Within the claims protection domain for belonging to the present invention.
Claims (8)
1. a kind of pcb board that is conveniently adjusted is tightened up a screw the structure whether hole be grounded, characterized in that including controllably upper key device, and
Screw hole, the holes VIA on pcb board, pcb board are grounded equipped with pcb board, the metal chassis of pcb board ground wire and server
Or cage connection, several holes VIA are set to screw hole periphery, the endoporus of the screw hole is equipped with metal coating, in pcb board
On around the surface of screw hole be equipped with metal foil, one end of metal foil connect with metal coating, the other end goes up key device with controllable
One end connects, and controllably the upper key device other end is connect with the holes VIA.
2. a kind of pcb board that is conveniently adjusted as described in claim 1 is tightened up a screw the structure whether hole be grounded, characterized in that described
Pcb board is multi-layer PCB board.
3. a kind of pcb board that is conveniently adjusted is tightened up a screw the structure whether hole be grounded as described in claim 1 or 2, characterized in that
The controllably upper key device is 0 Ohmic resistance.
4. a kind of pcb board that is conveniently adjusted as described in claim 1 is tightened up a screw the structure whether hole be grounded, characterized in that described
Controllably upper key device is short circuit tin point.
5. a kind of pcb board that is conveniently adjusted as described in claim 1 is tightened up a screw the structure whether hole be grounded, characterized in that described
Controllably upper key device is capacitance, magnetic bead or inductance.
6. a kind of pcb board that is conveniently adjusted as described in claim 1 is tightened up a screw the structure whether hole be grounded, characterized in that described
Metal coating is copper coating.
7. a kind of pcb board that is conveniently adjusted as described in claim 1 is tightened up a screw the structure whether hole be grounded, characterized in that described
The hole wall cylindrical surface in the holes VIA is equipped with copper coating.
8. a kind of pcb board that is conveniently adjusted as described in claim 1 is tightened up a screw the structure whether hole be grounded, characterized in that described
Metal foil is copper foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810097048.7A CN108347823A (en) | 2018-01-31 | 2018-01-31 | A kind of pcb board that is conveniently adjusted is tightened up a screw the structure whether hole be grounded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810097048.7A CN108347823A (en) | 2018-01-31 | 2018-01-31 | A kind of pcb board that is conveniently adjusted is tightened up a screw the structure whether hole be grounded |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108347823A true CN108347823A (en) | 2018-07-31 |
Family
ID=62961491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810097048.7A Pending CN108347823A (en) | 2018-01-31 | 2018-01-31 | A kind of pcb board that is conveniently adjusted is tightened up a screw the structure whether hole be grounded |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108347823A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2631191Y (en) * | 2003-05-26 | 2004-08-04 | 华为技术有限公司 | One-board |
| CN101170894A (en) * | 2007-11-23 | 2008-04-30 | 福建星网锐捷网络有限公司 | Single plate structure |
| JP2008226966A (en) * | 2007-03-09 | 2008-09-25 | Funai Electric Co Ltd | Grounding structure of printed wiring board |
-
2018
- 2018-01-31 CN CN201810097048.7A patent/CN108347823A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2631191Y (en) * | 2003-05-26 | 2004-08-04 | 华为技术有限公司 | One-board |
| JP2008226966A (en) * | 2007-03-09 | 2008-09-25 | Funai Electric Co Ltd | Grounding structure of printed wiring board |
| CN101170894A (en) * | 2007-11-23 | 2008-04-30 | 福建星网锐捷网络有限公司 | Single plate structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180731 |