CN104684241B - Circuit board - Google Patents
Circuit board Download PDFInfo
- Publication number
- CN104684241B CN104684241B CN201310628906.3A CN201310628906A CN104684241B CN 104684241 B CN104684241 B CN 104684241B CN 201310628906 A CN201310628906 A CN 201310628906A CN 104684241 B CN104684241 B CN 104684241B
- Authority
- CN
- China
- Prior art keywords
- hole
- conductive
- circuit board
- protective layer
- cut
- 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
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Structure Of Printed Boards (AREA)
Abstract
A kind of circuit board includes plate body, protective layer and screw.Plate body surface has conductive through hole, and has Lu Tong areas around conductive through hole.Protective layer has cut, and cut ambient radiation shape extends multiple slits.The opening of cut alignment conductive through hole and the size of cut are less than the opening size of conductive through hole, the region at least covering part Lu Tong areas between two adjacent slits.Screwed lock is enclosed in conductive through hole, and at least part protective layer is fastened between screw and conductive through hole.
Description
Technical field
The present invention be on a kind of circuit board, more particularly it is a kind of can anti electromagnetic wave interference circuit board.
Background technology
Electronic equipment can all have the change of intermittent or successional voltage, electric current and electric field in running, sometimes
Rate of change is quite fast, and then causes the electromagnetism that sensing is produced between different frequency (frequency) or a frequency band (band)
Energy, and this electromagnetic energy can be then transmitted into the environment of surrounding by corresponding circuit, and produce Electromagnetic Interference
(Electromagnetic Interference,EMI)。
At present, the screw hole surface of general circuit plate would generally reveal copper, and the shielding shell of electronic equipment then passes through screw
Hole strap circuits plate.The structure of this shielding shell overlap joint screw hole, makes electron stream easily by circuit inner cord via screw hole
Dew copper surface conduct to shielding shell, and then produce Electromagnetic Interference, cause EMI test crash.
For example, Fig. 1 is refer to, it is the plate body stereogram for the circuit board for illustrating conventional art.As illustrated, plate body
100 surface 101 can include multiple electronic components 102 and at least one conductive through hole 110.Electronic components 102 can be with
It is the element that the plate body 100 of the circuit boards such as electric capacity, inductance or connectivity port can carry.
There is Lu Tong areas 120 around the opening 111 of conductive through hole 110.When screw (not illustrating) is locked into conductive through hole
After 110, Lu Tong areas 120 can be contacted with screw, cause electron stream easily by circuit inner cord via screw hole Lu Tong areas 120 with
Screw is transmitted to the shielding shell of electronic installation, and this is the so-called existing picture of jump electricity, and can cause EMI test crash.
The content of the invention
The aspect of the present invention proposes a kind of circuit board, to solve the problems, such as conventional art.
According to one embodiment of the invention, there is provided a kind of circuit board, it includes plate body, protective layer and screw.Plate body table
Face has conductive through hole, and has Lu Tong areas around conductive through hole.Protective layer has cut, and cut ambient radiation shape extends
Multiple slits.The opening of cut alignment conductive through hole and the size of cut are less than the opening size of conductive through hole, and two is adjacent narrow
Region at least covering part Lu Tong areas between seam.Screwed lock is enclosed in conductive through hole, at least part protective layer be fastened in screw with
Between conductive through hole.
According to one embodiment of the invention, above-mentioned cut is at least partially disposed at the opening of conductive through hole in the orthographic projection of plate body
In.
According to one embodiment of the invention, region coverage fraction conductive through hole between above-mentioned two adjacent slits is opened
Mouthful.
According to one embodiment of the invention, the subregion between above-mentioned two adjacent slits is located at screw and conductive through hole
Hole wall between.
According to one embodiment of the invention, above-mentioned cut forms one meter of word pattern with each slit.
According to one embodiment of the invention, the width of above-mentioned each slit is less than or equal to 0.2 millimeter (mm).
According to one embodiment of the invention, the length of above-mentioned each slit is less than or equal to 2 millimeters (mm).
According to one embodiment of the invention, the thickness of above-mentioned protective layer is 0.2 millimeter (mm).
According to one embodiment of the invention, the material mylar (Mylar) of above-mentioned protective layer.
According to one embodiment of the invention, above-mentioned protective layer includes electromagnetic wave absorbent material.
In summary, the above embodiment of the present invention at least has advantages below：
1. the dew copper region covered by protective layer around the conductive through hole of plate body so that screw locking enters conductive logical
Kong Hou, screw will not be contacted directly with dew copper region, reduce electromagnetic interference.
2. the opening of the region coverage fraction conductive through hole between the slit of protective layer and it can be bent into conductive through hole
In, therefore screw can be locked in conductive through hole by the regional guidance between slit.
Brief description of the drawings
To allow the present invention and its advantage to become apparent, the explanation of institute's accompanying drawings is with reference to as follows：
Fig. 1 is the plate body stereogram for the circuit board for illustrating conventional art.
Fig. 2 is the stereogram of an embodiment of the plate body for illustrating the circuit board of the present invention.
Fig. 3 is the partial enlarged drawing for illustrating Fig. 2.
Fig. 4 is the profile for the protective layer for illustrating Fig. 3.
Fig. 5 is the stereogram for the embodiment for illustrating circuit board of the present invention.
Fig. 6 is illustrated in Fig. 5 along line segment AA` profile.
【Symbol description】
10：Circuit board
100：Plate body
101：Surface
102：Electronic components
110：Conductive through hole
111：Opening
120：Lu Tong areas
230：Protective layer
231：Cut
232：Slit
233：Electromagnetic wave absorbent material
234：Hole wall
240：Screw
D1：Width
D2：Length
D3：Thickness
R：Region
Embodiment
Multiple embodiments of the present invention will be disclosed with schema below, as clearly stated, the details in many practices will
It is explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.In addition, figure
Formula only for the purpose of description, and is mapped not according to full size.To make to readily appreciate, similar elements will be with identical in the description below
Symbology illustrates.
First, present invention system in order to avoid conventional art Zhong Lutong areas 120 and locks the screw electricity into conductive through hole 110
Property connection, and then produce Electromagnetic Interference (Electromagnetic Interference, EMI), thus by a protective layer 230
(being illustrated in Fig. 2 to Fig. 5) covers Lu Tong areas 120, to avoid jumping electrical phenomena and reduce Electromagnetic Interference.
Please also refer to Fig. 1, Fig. 2 and Fig. 3, wherein Fig. 2 is an embodiment of the plate body for illustrating the circuit board of the present invention
Stereogram, Fig. 3 are the partial enlarged drawings for illustrating Fig. 2.As illustrated, the present invention plate body 100 it is different from Fig. 1 plate body 100
In the surface 101 of plate body 100 of the invention is covered with layer protective layer 230.Protective layer 230 has cut 231, and multiple
Slit 232.Each system of slit 232 goes out from the ambient radiation of cut 231.
The size of cut 231 is less than the size of the opening 111 of conductive through hole 110, and when protective layer 230 is pasted to plate body
During 100 surface 101, the system of cut 231 is directed at the opening 111 of conductive through hole 110, and the region R between two adjacent slots 232 is extremely
Few covering part Lu Tong areas 120.Thus so that the Lu Tong areas 120 on the surface 101 of plate body 100 can nearly all protected seam
230 are covered.
More specifically, the bore of the cut 231 of the present embodiment is less than the bore of the opening 111 of conductive through hole 110, and narrow
The width D 1 of seam 232 is less than or equal to 0.2 millimeter (mm), and the length D2 of slit 232 is less than or equal to 2 millimeters (mm).Such one
Come, in product practical application, if the bore of the opening 111 of conductive through hole 110 by taking 2mm as an example, the width of Lu Tong areas 120 also with
Calculated exemplified by 2mm, the area in Ze Lutong areas 120 is about 12 π mm2.If the number of slit 232 is reviewed with 6 slits 232 in Fig. 3
Calculate, and be approximately rectangle by slit 232, then the area for understanding slit 232 is about 0.2*2*6mm2, amount at least below
2.4mm2.It follows that the exposed about 2.4mm of slit 2322/12πmm2Lu Tong areas 120, amount to be less than 6.3%.That is, this
The protective layer 230 of embodiment can at least cover 93.7% Lu Tong areas 120.
It should be noted that the number of slit 232 disclosed by the present embodiment and being not used to the limitation present invention.In its of the present invention
In his embodiment, the number of slit 232 can be eight and distance or unequal spacing distance are arranged in similar rice font at equal intervals
Pattern.
Then, Fig. 4 is refer to, it is the profile for the protective layer for illustrating Fig. 3.As illustrated, the protective layer of the present embodiment
230 can thickness D3 can be 0.2mm so that after screw locking enters conductive through hole 110, the thickness of protective layer 230 can be defined at least
Go out a gap, to avoid remaining a small number of exposed Lu Tong areas 120 from directly contacting screw, and then cause electromagnetic interference.
It is noted that in the present embodiment, the material of protective layer 230 can be mylar (Mylar), and with one
Fixed pliability.Also, in some embodiments, in order to strengthen protective layer 230 absorb electromagnetic interference ability, protective layer 230
It is interior to include electromagnetic wave absorbent material 233, such as barium titanate (BaTiO3) etc..
Then, Fig. 5 and Fig. 6 are refer to, Fig. 5 is the stereogram for the embodiment for illustrating circuit board of the present invention, and Fig. 6 is to illustrate
Along line segment AA' profile in Fig. 5.As illustrated, circuit board 10 includes plate body 100, protective layer 230 and screw 240.For
The clear explanation features of the present invention, Fig. 5 screw 240 is that part is locked in conductive through hole 110.It is to be understood that producing
During product practical application, screw 240 can lock in conductive through hole 110 completely.
As illustrated, when screw 240 is locked in conductive through hole 110, at least part protective layer 230 is fastened in screw
Between 240 and conductive through hole 110.More specifically, please also refer to Fig. 3, in the present embodiment, cut 231 in plate body 100 just
Projection is at least partially disposed in the opening 111 of conductive through hole 110.In addition, the region R covering parts between two adjacent slits 232
Divide the opening 111 of conductive through hole 110.Consequently, it is possible to when screw 240 locks into the state of conductive through hole 110 completely, because
Protective layer 230 has certain pliability, so the region R between two adjacent slits 232 is also partly bent into conductive
In through hole 110 so that the hole wall 234 that the region R-portion between two adjacent slits 232 is located at conductive through hole 110 (is illustrated in figure
6) between screw 240.
It follows that the design that the present embodiment is extended out by multiple slits 232 from around cut 231 so that cut
Protective layer 230 around 231 is divided out multiple region R.Regional R, can when screw 240 is locked into conductive through hole 110
Being bent into conductive through hole 110 therewith, reaches the effect of leadscrew 240 is locked into conductive through hole 110.In addition,
The present embodiment may be such that the exposed area in the Lu Tong areas 120 of conductive through hole 110 significantly reduces 94% by the design of slit 232
More than, use reduction Electromagnetic Interference.
In summary, the invention discloses above-described embodiment in, can solve asking for electromagnetic interference by the design of protective layer
Topic.In addition, the subregion between the slit of protective layer can be bent into conductive through hole, reaches leadscrew and lock entrance
The effect of conductive through hole.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any art technology
Personnel, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations, therefore protection scope of the present invention
It is defined when depending on appended claims institute defender.
Claims (10)
1. a kind of circuit board, comprising：
One plate body, its surface have a conductive through hole, have a Lu Tong areas around the opening of the conductive through hole；
One protective layer, there is a cut, the cut ambient radiation shape extends multiple slits, and the cut is directed at the conductive through hole
Opening and the break size are less than the opening size of the conductive through hole, the region at least covering part between two adjacent slits
The Lu Tong areas；And
One screw, lock and be fastened in into the conductive through hole, at least partly protective layer between the screw and the conductive through hole.
2. circuit board as claimed in claim 1, it is characterised in that the cut is at least partially disposed at this in the orthographic projection of the plate body
In the opening of conductive through hole.
3. circuit board as claimed in claim 1, it is characterised in that region coverage fraction between two adjacent slits this lead
The opening of electric through-hole.
4. circuit board as claimed in claim 1, it is characterised in that the subregion between two adjacent slits is located at the spiral shell
Between silk and the hole wall of the conductive through hole.
5. circuit board as claimed in claim 1, it is characterised in that the cut forms one meter of word pattern with those slits.
6. circuit board as claimed in claim 1, it is characterised in that respectively the width of the slit is less than or equal to 0.2 millimeter.
7. circuit board as claimed in claim 1, it is characterised in that respectively the length of the slit is less than or equal to 2 millimeters.
8. circuit board as claimed in claim 1, it is characterised in that the thickness of the protective layer is 0.2 millimeter.
9. circuit board as claimed in claim 1, it is characterised in that the material of the protective layer is mylar.
10. circuit board as claimed in claim 8, it is characterised in that the protective layer includes electromagnetic wave absorbent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628906.3A CN104684241B (en) | 2013-11-29 | 2013-11-29 | Circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310628906.3A CN104684241B (en) | 2013-11-29 | 2013-11-29 | Circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104684241A CN104684241A (en) | 2015-06-03 |
| CN104684241B true CN104684241B (en) | 2017-12-08 |
Family
ID=53318654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310628906.3A Active CN104684241B (en) | 2013-11-29 | 2013-11-29 | Circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104684241B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2094073A (en) * | 1981-02-19 | 1982-09-08 | Fontainemelon Horlogerie | Electrical connecting arrangement for connecting between a cell and the circuit of a watch |
| US5237132A (en) * | 1991-06-17 | 1993-08-17 | Nhk Spring Co., Ltd. | Metallic printed circuit board with countersunk mounting hole |
| CN201383899Y (en) * | 2009-03-20 | 2010-01-13 | 英业达股份有限公司 | Circuit board and organism applying same |
| CN102378537A (en) * | 2010-08-26 | 2012-03-14 | 张方荣 | Fixing structure of circuit board |
| CN202514191U (en) * | 2012-01-13 | 2012-10-31 | 苏州江能电气设备有限公司 | Apparatus capable of realizing parallel splicing connection of two electrical cabinets |
-
2013
- 2013-11-29 CN CN201310628906.3A patent/CN104684241B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2094073A (en) * | 1981-02-19 | 1982-09-08 | Fontainemelon Horlogerie | Electrical connecting arrangement for connecting between a cell and the circuit of a watch |
| US5237132A (en) * | 1991-06-17 | 1993-08-17 | Nhk Spring Co., Ltd. | Metallic printed circuit board with countersunk mounting hole |
| CN201383899Y (en) * | 2009-03-20 | 2010-01-13 | 英业达股份有限公司 | Circuit board and organism applying same |
| CN102378537A (en) * | 2010-08-26 | 2012-03-14 | 张方荣 | Fixing structure of circuit board |
| CN202514191U (en) * | 2012-01-13 | 2012-10-31 | 苏州江能电气设备有限公司 | Apparatus capable of realizing parallel splicing connection of two electrical cabinets |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104684241A (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2020202382A (en) | Inductor bridge and electronic device | |
| TWI241878B (en) | Wiring board and circuit module | |
| KR101999509B1 (en) | Circuit board | |
| CN110049615A (en) | Car-mounted electronic device | |
| CN108141995B (en) | The connector integrated structure of electronic equipment and portable electronic device with it | |
| CN105636336B (en) | Printed circuit board and mobile terminal | |
| EP3333889A1 (en) | Heat dissipating structure and electronic apparatus | |
| CN1856242A (en) | Electronic device against electromagnetic interference | |
| CN105376938A (en) | Communication device and circuit board module thereof | |
| CN104144598B (en) | Radome and circuit board fixation structure | |
| JP6444949B2 (en) | Structure and method for reducing electromagnetic interference | |
| TWI584153B (en) | Protecting apparatus | |
| CN104684241B (en) | Circuit board | |
| US11272609B2 (en) | Circuit board and electronic device | |
| WO2017090417A1 (en) | Enclosure with antenna, electronic device employing same, and method of manufacturing enclosure with antenna | |
| KR20110032601A (en) | Printed circuit board having electromagnetic bandgap structure | |
| CN107770960A (en) | The attachment structure of electronic component and circuit board | |
| US9480191B2 (en) | Electronic apparatus having integrated shielding film | |
| JP2013153041A (en) | Noise suppression structure | |
| US9055665B2 (en) | Interface between a security module and a host device | |
| US10317932B2 (en) | Capacitive structures for crosstalk reduction | |
| JP5320801B2 (en) | Electronic device and noise shielding method thereof | |
| TWI475933B (en) | Circuit board | |
| EP2455886A1 (en) | Interface between a security module and a host device | |
| JP2005302799A (en) | Multilayered printed wiring board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191216 Address after: Floor 1, building 3, No. 988, Xinxing Second Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Weivo Semiconductor Co., Ltd. Address before: 201114 Shanghai City Caohejing export processing zone of Minhang District Pu Xing Road No. 789 Co-patentee before: Yingda Co., Ltd. Patentee before: Yingda Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |