CN213073211U - Corrosion-resistant fan PCB - Google Patents
Corrosion-resistant fan PCB Download PDFInfo
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- CN213073211U CN213073211U CN202021957901.7U CN202021957901U CN213073211U CN 213073211 U CN213073211 U CN 213073211U CN 202021957901 U CN202021957901 U CN 202021957901U CN 213073211 U CN213073211 U CN 213073211U
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Abstract
The utility model provides an anticorrosive fan PCB board, including the front panel, the front panel includes pad and copper foil, and the copper foil surface is covered with a layer of green oil overburden, and green oil overburden covers other optional positions except the pad of front panel; a white oil layer covers the green oil covering layer, and the white oil layer covers any other positions of the green oil layer except the bonding pad; by adding the white oil covering layer on the green oil covering layer of the copper foil, the bonding pad is avoided, meanwhile, a plurality of protective layers are provided for the copper foil, the phenomenon that the copper foil is disconnected due to the fact that salt mist directly erodes the copper foil is effectively avoided, and the service life of the PCB is prolonged.
Description
Technical Field
The utility model relates to a radiator fan technical field especially relates to an anticorrosive fan PCB board.
Background
Pcb (printed circuit board), i.e. printed wiring board, printed circuit board for short, is one of the important parts in the electronics industry. Almost every kind of electronic equipment, as small as electronic watches, calculators, as large as computers, communication electronics, military weaponry systems, has electronic components such as integrated circuits, and printed boards are used to electrically interconnect the various components. The printed circuit board consists of an insulating bottom plate, a connecting lead and a welding disc for assembling and welding electronic elements, and has double functions of a conductive circuit and the insulating bottom plate. The circuit can replace complex wiring to realize electrical connection among elements in the circuit, thereby simplifying the assembly and welding work of electronic products, reducing the wiring workload in the traditional mode and greatly lightening the labor intensity of workers; and the volume of the whole machine is reduced, the product cost is reduced, and the quality and the reliability of the electronic equipment are improved. The printed circuit board has good product consistency, can adopt standardized design, and is beneficial to realizing mechanization and automation in the production process. Meanwhile, the whole printed circuit board subjected to assembly and debugging can be used as an independent spare part, so that the exchange and maintenance of the whole product are facilitated. At present, printed wiring boards have been used very widely in the manufacture of electronic products.
Because the existing PCB is influenced by the use environment and time, when the fan is on the sea or in an area with high salinity in the air, the copper foil of the fan PCB operates in a long-time severe environment, the copper foil is easy to break, and the service life of the fan PCB is influenced; therefore, a new PCB is needed to protect the exposed copper foil by one layer without affecting the usage and to prevent the copper foil from being broken due to direct erosion of the copper foil by salt mist.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the technology, the utility model provides an anti-corrosion fan PCB board, which is characterized in that a layer of white oil covering layer is added on the green oil covering layer of the copper foil, so that a plurality of layers of protective layers are provided for the copper foil while the bonding pad is avoided, and the phenomenon that the copper foil is disconnected due to the fact that salt mist directly erodes the copper foil is effectively avoided; the service life of the PCB is prolonged.
In order to achieve the above object, the present invention provides an anti-corrosion fan PCB board, comprising a front panel, wherein the front panel comprises a bonding pad and a copper foil, the surface of the copper foil is covered with a layer of green oil covering layer, and the green oil covering layer covers other arbitrary positions of the front panel except the bonding pad; and a white oil layer is covered above the green oil covering layer, and the white oil layer covers any other positions of the green oil covering layer except the bonding pad.
Preferably, the method comprises the following steps: still include the rear panel, the rear panel is provided with pad and copper foil equally, the green oil overburden layer covers other optional position of rear panel except that the pad, the white oil layer covers other optional position of green oil overburden layer except that the pad.
Preferably, the method comprises the following steps: the cover plate comprises a front panel, a rear panel and a white oil layer, wherein the front panel and the rear panel are arranged in a front-to-back mode, the white oil layer covers the front panel and the rear panel, and the white oil layer covers the front panel and the rear panel.
Preferably, the method comprises the following steps: the surface of the green oil covering layer is also printed with marking characters, and the white oil layer covers any other positions of the green oil covering layer except the marking characters.
Preferably, the method comprises the following steps: the thickness of the green oil coating is 0.4mil to 0.5 mil.
Preferably, the method comprises the following steps: the thickness of the white oil layer is 0.8mil-1 mil.
The utility model has the advantages that: compared with the prior art, the utility model provides a corrosion-resistant fan PCB board, including the front panel, the front panel includes pad and copper foil, and the copper foil surface covers has one deck green oil overburden, and green oil overburden covers other optional positions except the pad of front panel; a layer of white oil layer covers the upper part of the green oil covering layer, and the white oil layer covers any other position of the green oil covering layer except the bonding pad; by adding the white oil covering layer on the green oil covering layer of the copper foil, the bonding pad is avoided, meanwhile, a plurality of protective layers are provided for the copper foil, the phenomenon that the copper foil is disconnected due to the fact that salt mist directly erodes the copper foil is effectively avoided, and the service life of the PCB is prolonged.
Drawings
FIG. 1 is a front panel view of the present invention;
FIG. 2 is a rear panel view of the present invention;
fig. 3 is a white oil layer covering diagram of the present invention.
The main element symbols are as follows:
1. a white oil layer; 2. marking characters; 3. a pad; 4. through the hole; 5. a green oil coating.
Detailed Description
In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.
Because the existing PCB is influenced by the use environment and time, when the fan is on the sea or in an area with high salinity in the air, the copper foil of the fan PCB operates in a long-time severe environment, the copper foil is easy to break, and the service life of the fan PCB is influenced; therefore, a new PCB is needed to protect the exposed copper foil by one layer without affecting the usage and to prevent the copper foil from being broken due to direct erosion of the copper foil by salt mist.
Specifically, for the utility model provides an anticorrosive fan PCB board, please refer to fig. 1-3, this PCB board includes: the front panel comprises a bonding pad 3 and copper foil, wherein the surface of the copper foil is covered with a green oil covering layer 5, and the green oil covering layer 5 covers any other position of the front panel except the bonding pad 3; a white oil layer 1 is covered above the green oil covering layer 5, and the white oil layer 1 covers any other position of the green oil covering layer except the bonding pad 3; the green oil covering layer 5 is selected conventionally for a PCB board protecting layer, the covering of one white oil layer 1 is added, one more layer of protection can be provided for the PCB board, the copper foil inside the PCB board can not be corroded quickly in the high-salinity air, the protection effect which can be provided by common green oil is very limited, and therefore after the white oil is covered, the anti-corrosion effect can be greatly improved.
One embodiment mentions: the back panel is also provided with a bonding pad 3 and a copper foil, the green oil covering layer 5 covers any other position of the back panel except the bonding pad 3, and the white oil layer 1 covers any other position of the green oil covering layer 5 except the bonding pad 3; similarly, since the rear panel has a small number of lands 3, the area to be covered with white oil is large, and this area is also an important area for corrosion prevention.
One embodiment mentions: the oil-white paint also comprises a through hole 4, a green oil coating 5 covers the front panel and the rear panel at any position except the through hole 4, and a white oil layer 1 covers the green oil coating 5 on the front panel and the rear panel at any position except the through hole 4; the same need to avoid coverage by the holes 4 is that the holes 4 have conductive functional properties inside so that the white oil cannot cover the metal rim around the holes 4.
One embodiment mentions: the surface of the green oil covering layer 5 is also printed with a mark character 2, and the white oil layer 1 covers any other position of the green oil covering layer except the mark character 2; on the PCB, white oil is often needed to print some characters as prompting or guiding instruction functions, and the white oil is also used as a raw material for printing the guiding mark, so that when the white oil layer 1 is used for covering to realize a protection function, all areas with the marked characters 2 need to be avoided, and the phenomenon that the marked characters 2 are covered due to white oil covering, and the prompting or guiding instruction functions are lost is prevented.
One embodiment mentions: the thickness of the green oil covering layer 5 is 0.4mil to 0.5 mil; in the preferable actual manufacturing process, the printing is usually carried out by adopting the thickness of 0.5mil, the defect of poor contact, or unclear line and unattractive appearance is easily caused due to overlarge thickness of the green oil, the solder resisting effect is better due to the proper thickness, and the protection effect of the line and the copper foil is not in place due to the overlarge thickness; in this example 0.5mil is chosen in order not to use too thick a thickness to reserve the print thickness for the subsequent printing of the white oil layer 1.
One embodiment mentions: the thickness of the white oil layer 1 is 0.8mil-1 mil; the preferred thickness in this embodiment is 0.9mil, and the white oil layer 1 also does not need to be printed to an excessive thickness, because the white oil layer 1 is covered on the green oil cover layer 5, and the copper foil is protected by the base of the green oil cover layer 5, and the protective effect of the white oil layer 1 is added to achieve a double-layer covering protection effect, so that the white oil layer has a better protection effect when being corroded by high salinity air.
The principle of the present invention is described below with reference to the accompanying drawings:
when the silk-screen printing processing step is carried out, firstly, silk-screen printing processing of the green oil covering layer 5 is carried out, printing of the green oil covering layer 5 is carried out on the surface of the original substrate and the copper foil, the printed green oil covering layer 5 is guaranteed to be 0.5mil, after exposure and development high-temperature baking, printing of the marking characters 2 is carried out, and after printing is finished, printing of the white oil layer 1 is prepared; the printing of the white oil layer 1 needs to avoid the following places: printing of the white oil layer 1 is continued above the green oil covering layer 5 at the position of the pad 3, the position of the through hole 4 and the position of the mark character 2, and the thickness of the printed white oil layer 1 is ensured to be 0.9 mil; after printing, exposure, development and high-temperature baking are carried out, and the fan PCB with double-layer protection and good corrosion resistance is obtained.
The utility model has the advantages that:
1. by printing the white oil layer on the green oil covering layer and additionally arranging the white oil protective layer on the basis of the original protection, the service life of the PCB is effectively prolonged, and the copper foil is prevented from being corroded.
The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.
Claims (6)
1. The corrosion-resistant fan PCB is characterized by comprising a front panel, wherein the front panel comprises a bonding pad and a copper foil, a layer of green oil covering layer covers the surface of the copper foil, and the green oil covering layer covers any other position of the front panel except the bonding pad; and a white oil layer is covered above the green oil covering layer, and the white oil layer covers any other positions of the green oil covering layer except the bonding pad.
2. The corrosion-resistant fan PCB board of claim 1, further comprising a back panel, wherein the back panel is also provided with a pad and a copper foil, the green oil coating layer covers any other position of the back panel except the pad, and the white oil layer covers any other position of the green oil coating layer except the pad.
3. The corrosion resistant fan PCB panel of claim 2, further comprising through holes, wherein the green oil coating covers the front and rear panels at any location other than through holes, and wherein the white oil coating covers the front and rear panels at any location other than through holes.
4. The corrosion-resistant fan PCB board of claim 1, wherein the green oil covering layer is further printed with marking characters, and the white oil layer covers the green oil covering layer at any position except the marking characters.
5. The corrosion resistant fan PCB board of claim 1, wherein the green oil overlay has a thickness of 0.4mil to 0.5 mil.
6. The corrosion resistant fan PCB panel of claim 1, wherein the white oil layer has a thickness of 0.8mil to 1 mil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021957901.7U CN213073211U (en) | 2020-09-09 | 2020-09-09 | Corrosion-resistant fan PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021957901.7U CN213073211U (en) | 2020-09-09 | 2020-09-09 | Corrosion-resistant fan PCB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213073211U true CN213073211U (en) | 2021-04-27 |
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ID=75557280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021957901.7U Active CN213073211U (en) | 2020-09-09 | 2020-09-09 | Corrosion-resistant fan PCB |
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| Country | Link |
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| CN (1) | CN213073211U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556862A (en) * | 2021-07-20 | 2021-10-26 | 全成信电子（深圳）股份有限公司 | PCB structure capable of rapidly distinguishing different models with same size and manufacturing method thereof |
-
2020
- 2020-09-09 CN CN202021957901.7U patent/CN213073211U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556862A (en) * | 2021-07-20 | 2021-10-26 | 全成信电子（深圳）股份有限公司 | PCB structure capable of rapidly distinguishing different models with same size and manufacturing method thereof |
| CN113556862B (en) * | 2021-07-20 | 2023-01-17 | 全成信电子（深圳）股份有限公司 | PCB structure capable of rapidly distinguishing different models with same size and manufacturing method thereof |
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