CN214592124U - Anti-interference PCB board of antivibration - Google Patents
Anti-interference PCB board of antivibration Download PDFInfo
- Publication number
- CN214592124U CN214592124U CN202120554248.8U CN202120554248U CN214592124U CN 214592124 U CN214592124 U CN 214592124U CN 202120554248 U CN202120554248 U CN 202120554248U CN 214592124 U CN214592124 U CN 214592124U
- Authority
- CN
- China
- Prior art keywords
- insulating
- circuit board
- board body
- conductive
- cover plate
- 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.)
- Expired - Fee Related
Links
- 230000004888 barrier function Effects 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 46
- 239000011229 interlayer Substances 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Abstract
The utility model provides an anti-interference PCB board of anti-vibration, including the circuit board body, the upper and lower both sides of the circuit board body are equipped with shielding cover plate and ground connection bottom plate respectively, install the electronic component of height h on the circuit board body, are equipped with the first through-hole in the circuit board body, the inner wall of first through-hole covers and is covered with the insulating barrier layer; a conductive screw is fixed below the shielding cover plate, an insulating limiting block with the height of H is fixed below the shielding cover plate, H is greater than H, and a first insulating buffer layer covers the bottom of the insulating limiting block; the grounding bottom plate is internally provided with a second through hole, the grounding bottom plate is covered with a second insulating buffer layer, and the conductive screw rod is connected with a conductive nut in a threaded manner after penetrating through the first through hole and the second through hole. The utility model discloses can obtain good anti-interference protection effect, can effectively avoid being caused the influence by the electromagnetic signal who absorbs the shielding to the work of PCB board, whole PCB plate structure has good shock resistance.
Description
Technical Field
The utility model relates to a PCB board specifically discloses an anti-interference PCB board of anti-vibration.
Background
The PCB is also called a printed circuit board or a printed circuit board, and is a copper clad laminate structure manufactured on an insulating base material such as an epoxy glass base material or a phenolic resin base material, and a circuit layer structure with a specific shape is obtained on the copper layer after etching, and is generally used as an electrical connection carrier of an electronic component.
Electronic component installs on the PCB board through inserting the mode of connecing and inserting or paster, PCB board during operation, its inside circuit and electronic component receive external electromagnetic signal's interference easily to influence the working property of PCB board, among the prior art, for reducing the influence that the circuit board received external electromagnetic signal interference, set up shielding layer structure on the top surface of PCB board many, but this kind of PCB board only can realize shielding protection to its inside circuit, anti-interference shielding effect is not good.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an anti-interference PCB with good anti-interference performance and overall shielding effect to solve the problems in the prior art.
In order to solve the prior art problem, the utility model discloses an anti-interference PCB board of anti-vibration, including the circuit board body that thickness is D, the upper and lower both sides of circuit board body are equipped with shielding cover plate and the ground connection bottom plate that thickness is D respectively, install the electronic component that highly is h on the circuit board body, the electronic component is located between shielding cover plate and the circuit board body, be equipped with n first through-holes in the circuit board body, n is the integer that is greater than 1, each first through-hole inner wall all covers and is covered with the insulating barrier layer;
n conductive screws with the length of L are fixed below the shielding cover plate, an insulating limiting block with the height of H is fixed below the shielding cover plate, H is greater than H, and a first insulating buffer layer covers the bottom of the insulating limiting block;
and n second through holes are formed in the grounding bottom plate, a second insulating buffer layer covers the grounding bottom plate, and a conductive nut, L (H + D + D), is in threaded connection after the conductive screw penetrates through the first through hole and the second through hole.
Further, the circuit board body comprises an insulating substrate, a first conducting circuit layer, a first insulating interlayer, a second conducting circuit layer and a second insulating interlayer which are sequentially arranged from bottom to top, wherein a bonding pad is arranged in the second insulating interlayer, and the bonding pad is connected with the electronic element and the second conducting circuit layer.
Furthermore, the shielding cover plate is an aluminum cover plate, and the grounding bottom plate is an aluminum bottom plate.
Furthermore, the first insulating buffer layer and the second insulating buffer layer are both heat conduction silica gel layers.
Furthermore, a plurality of heat dissipation convex strips which are arranged at equal intervals are fixed on the shielding cover plate.
Furthermore, a gasket is arranged between the conductive nut and the grounding bottom plate.
The utility model has the advantages that: the utility model discloses an anti-interference PCB board of antivibration has comprehensive shielding anti-interference effect, and the conducting wire and the electronic component on surface in the PCB inboard can both obtain good anti-interference protection effect, and shields the apron and releases shielded electromagnetic signal through the ground connection bottom plate, and shielding structure and the conducting wire and the electronic component in the PCB inboard are all contactless to be switched on, can effectively avoid being absorbed shielded electromagnetic signal and cause the influence to the work of PCB board; the shielding cover plate and the grounding bottom plate are of a detachable structure, so that the convenience of the installation operation of electronic elements on the PCB can be effectively improved; in addition, be provided with insulating stopper between shielding apron and the circuit board body, can effectively protect electronic component to avoid the extrusion, insulating buffer layer can effectively absorb the shock force, and whole PCB plate structure has good shock resistance.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the split structure of the present invention.
The reference signs are: the circuit board comprises a circuit board body 10, a first through hole 101, an insulation barrier layer 102, an insulation substrate 11, a first conductive circuit layer 12, a first insulation barrier layer 13, a second conductive circuit layer 14, a second insulation barrier layer 15, a bonding pad 151, a shielding cover plate 20, a conductive screw 21, an insulation limiting block 22, a first insulation buffer layer 221, a heat dissipation convex strip 23, a grounding bottom plate 30, a second through hole 31, a conductive nut 32, a second insulation buffer layer 33, a gasket 34 and an electronic element 40.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 and 2.
The embodiment of the utility model discloses anti-interference PCB board of antivibration, including the circuit board body 10 that thickness is D, the upper and lower both sides of circuit board body 10 are equipped with shielding apron 20 and grounding bottom plate 30 that thickness is D respectively, grounding bottom plate 30 is the metal sheet of ground connection, can be for bearing the constitution plate body of casing, install the electronic component 40 that the maximum height is h on the circuit board body 10, electronic component 40 is located between shielding apron 20 and the circuit board body 10, be equipped with n first through-hole 101 in the circuit board body 10, first through-hole 101 runs through the upper and lower surface of circuit board body 10, n is the integer that is greater than 1, each first through-hole 101 inner wall all covers insulating barrier layer 102;
n conductive screws 21 with the length of L are fixed below the shielding cover plate 20, at least two insulating limit blocks 22 with the height of H are fixed below the shielding cover plate 20, the horizontal projection of the insulating limit blocks 22 on the circuit board body 10 is not overlapped with the electronic element 40, namely the insulating limit blocks 22 are positioned outside one side of the electronic element 40, H > H can effectively limit the position between the shielding cover plate 20 and the circuit board body 10, so that the electronic element 40 is effectively prevented from being crushed, and the bottom of each insulating limit block 22 is covered with a first insulating buffer layer 221;
be equipped with n second through-holes 31 in the ground connection bottom plate 30, ground connection bottom plate 30 coats and is stamped second insulation buffer layer 33, threaded connection has conductive nut 32 behind conductive screw 21 passes first through-hole 101 and second through-hole 31, namely conductive screw 21 passes behind first through-hole 101 and second through-hole 31, protrusion has conductive nut 32 in the one end threaded connection of ground connection bottom plate 30, L > (H + D + D), can ensure to realize effectively that circuit board body 10 is pressed from both sides tightly and is positioned between shielding cover plate 20 and ground connection bottom plate 30 behind conductive nut 32 locking conductive screw 21, conductive screw 21 can cooperate conductive nut 32 to realize switching on of shielding cover plate 20 and ground connection bottom plate 30, thereby effectively improve the shielding effect to electromagnetic signal.
When in use, the corresponding electronic element 40 can be firstly installed on the circuit board body 10, the conductive screw 21 is sequentially inserted into the first through hole 101 and the second through hole 31, and finally the position of the conductive screw 21 is locked and limited by the conductive nut 32, the first buffer layer and the second buffer layer are abutted against two sides of the circuit board body 10, when the circuit board body is subjected to external vibration or impact and other adverse acting forces, the first buffer layer and the second buffer layer can effectively absorb the external adverse acting forces, so that the circuit board body is effectively prevented from being damaged due to collision, in addition, the shielding cover plate 20 can effectively shield electromagnetic interference signals above the electronic element 40 and the circuit board body 10, the anti-interference performance of the electronic board body and the electronic element 40 thereon during working can be effectively ensured, the insulating limit block 22 positioned outside one side of the electronic element 40 can effectively limit the position between the shielding cover plate 20 and the circuit board, thereby effectively preventing the electronic component 40 from being crushed.
In this embodiment, the circuit board body 10 includes the insulating substrate 11 that sets gradually from bottom to top, first conductive circuit layer 12, first insulating interlayer 13, second conductive circuit layer 14 and second insulating interlayer 15, first through hole 101 runs through insulating substrate 11 simultaneously, first conductive circuit layer 12, first insulating interlayer 13, second conductive circuit layer 14 and second insulating interlayer 15, be equipped with pad 151 in the second insulating interlayer 15, pad 151 connects electronic component 40 and second conductive circuit layer 14, can be equipped with the conductive post that runs through first insulating interlayer 13 between first conductive circuit layer 12 and the second conductive circuit layer 14, thereby realize the electrically conductive intercommunication between the different conductive circuit layers, conductive post and first through hole 101 stagger the setting, do not have the crossed part of coincidence promptly conductive post and first through hole 101.
In this embodiment, the shielding cover plate 20 is an aluminum cover plate, and the grounding base plate 30 is an aluminum base plate, and aluminum has a good electromagnetic shielding performance.
In this embodiment, the first insulating buffer layer 221 and the second insulating buffer layer 33 are both heat conductive silica gel layers, and the heat conductive silica gel has good heat conductivity, buffering performance and insulating performance, and can effectively protect the structures on the two surfaces of the circuit board 10, and can effectively improve the heat dissipation performance of the circuit board 10.
In this embodiment, a plurality of heat dissipation protruding strips 23 are fixed on the shielding cover plate 20, and the heat dissipation performance of the overall structure of the PCB can be further improved by the heat dissipation protruding strips 23.
In this embodiment, a gasket 34 made of conductive metal is disposed between the conductive nut 32 and the grounding bottom plate 30, so that the stability of the connection structure between the conductive nut 32 and the conductive screw 21 can be effectively improved by the gasket 34, and the grounding bottom plate 30 can be effectively prevented from being crushed.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The anti-interference vibration PCB is characterized by comprising a circuit board body (10) with the thickness of D, wherein a shielding cover plate (20) and a grounding bottom plate (30) with the thickness of D are respectively arranged on the upper side and the lower side of the circuit board body (10), an electronic element (40) with the height of h is mounted on the circuit board body (10), the electronic element (40) is positioned between the shielding cover plate (20) and the circuit board body (10), n first through holes (101) are arranged in the circuit board body (10), n is an integer larger than 1, and an insulating barrier layer (102) covers the inner wall of each first through hole (101);
n conductive screw rods (21) with the length of L are fixed below the shielding cover plate (20), an insulating limiting block (22) with the height of H is fixed below the shielding cover plate (20), H is greater than H, and a first insulating buffer layer (221) covers the bottom of the insulating limiting block (22);
the grounding bottom plate (30) is internally provided with n second through holes (31), the grounding bottom plate (30) is covered with a second insulating buffer layer (33), and the conductive screw (21) penetrates through the first through hole (101) and the second through hole (31) and then is in threaded connection with a conductive nut (32), L (H + D + D).
2. The PCB of claim 1, wherein the circuit board body (10) comprises an insulating substrate (11), a first conductive circuit layer (12), a first insulating interlayer (13), a second conductive circuit layer (14) and a second insulating interlayer (15) which are sequentially arranged from bottom to top, wherein a bonding pad (151) is arranged in the second insulating interlayer (15), and the bonding pad (151) connects the electronic component (40) and the second conductive circuit layer (14).
3. The PCB of claim 1, wherein the shielding cover plate (20) is an aluminum cover plate and the grounding base plate (30) is an aluminum base plate.
4. The PCB of claim 1, wherein the first insulating buffer layer (221) and the second insulating buffer layer (33) are both made of thermal conductive silicone.
5. The PCB of claim 1, wherein the shielding cover plate (20) is fixed with a plurality of heat dissipation ribs (23) arranged at equal intervals.
6. The PCB of claim 1, wherein a spacer (34) is disposed between the conductive nut (32) and the grounding base plate (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120554248.8U CN214592124U (en) | 2021-03-17 | 2021-03-17 | Anti-interference PCB board of antivibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120554248.8U CN214592124U (en) | 2021-03-17 | 2021-03-17 | Anti-interference PCB board of antivibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214592124U true CN214592124U (en) | 2021-11-02 |
Family
ID=78354571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120554248.8U Expired - Fee Related CN214592124U (en) | 2021-03-17 | 2021-03-17 | Anti-interference PCB board of antivibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214592124U (en) |
-
2021
- 2021-03-17 CN CN202120554248.8U patent/CN214592124U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |