CN213280542U - Circuit board with isolation cover - Google Patents
Circuit board with isolation cover Download PDFInfo
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- CN213280542U CN213280542U CN202022392692.2U CN202022392692U CN213280542U CN 213280542 U CN213280542 U CN 213280542U CN 202022392692 U CN202022392692 U CN 202022392692U CN 213280542 U CN213280542 U CN 213280542U
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- circuit board
- positioning
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- pins
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Abstract
The utility model relates to a circuit board with cage, it includes: the circuit board comprises a circuit board main body and a circuit board, wherein the circuit board main body is provided with a first surface and a second surface which are opposite to each other, and at least two positioning through holes which penetrate through the first surface and the second surface; and the isolation cover is provided with a cover body which can cover the protection area, and pins which extend downwards from the position of the cover body corresponding to the positioning through holes and are of a bent structure, and after the pins are clamped into the corresponding positioning through holes, the isolation cover is fixed on the circuit board main body by filling light curing glue into the positioning through holes for irradiation and light curing.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a circuit board, and more particularly to a circuit board with a shield.
[ background of the invention ]
In order to prevent the Electro-Magnetic Interference (EMI), the design and manufacturer of the wireless product need to consider how to reduce the EMI when relating to the control circuit of the wireless product, and the circuit of the wireless product is also interfered by the signal of the external EMI, which may cause unexpected situations.
In order to improve the above problems, the isolation cover has come to be produced, so called the isolation cover is a metal shielding component with electromagnetic shielding effect, wherein the common mode is a one-piece full-welded isolation cover, that is, the isolation cover is directly welded on the circuit board main body, thereby protecting the electronic components located in the space below the isolation cover, and if the component under the isolation cover has a failure problem, the isolation cover needs to be detached after being desoldered to replace the corresponding component, which causes the problem of difficult maintenance.
To overcome the disadvantages of the one-piece full soldering technique, as shown in fig. 1, a two-piece full soldering technique is proposed, in which a lower frame 6 is first soldered and fixed on a circuit board main body 5, and an upper cover 7 is then bonded by a general assembly method after the circuit board main body 5 passes through a solder furnace to form a complete shielding structure. Although the problem of desoldering the whole cage can be solved by the two-piece structure design, the area of the lower frame 6 is large, and the structure of the lower frame itself is limited, so that the effective layout area of the circuit board main body 5 has to be large, which is not less than considerable waste for high-precision electronic products.
In order to solve the above-mentioned disadvantages of the two-piece all-soldering technique, as shown in fig. 2, a shielding clip type shielding can is available on the market, wherein a plurality of fixing clips 80 are soldered on the circuit board main body 8, and the shielding can 9 is added on the assembly line.
In view of the above, the present invention provides a circuit board with a shielding case, which can solve the above technical problems.
[ Utility model ] content
The to-be-solved technical problem of the utility model is to provide a circuit board with cage, can effective layout area on the greatly increased circuit board, reduce overall cost, equipment convenience and reliability height simultaneously.
In order to solve the above technical problem, the utility model provides a circuit board with cage, it includes:
the circuit board comprises a circuit board main body and a circuit board, wherein the circuit board main body is provided with a first surface and a second surface which are opposite to each other, and at least two positioning through holes which penetrate through the first surface and the second surface, the first surface is provided with a region to be protected for arranging electronic elements, and the at least two positioning through holes are arranged on the periphery of the region to be protected; and
the isolation cover is made of metal plates and is provided with a cover body capable of covering the protection area and pins extending downwards from the positions of the positioning through holes corresponding to the cover body, the pins can be correspondingly clamped into the positioning through holes, and the cover body is fixed on the circuit board main body by filling light curing glue into the positioning through holes and irradiating light for curing.
Preferably, the positioning through holes are shaped like oblong holes or elliptical holes, and the inner walls of the positioning through holes have conductive characteristics.
Preferably, the pins are bent spring structures.
Preferably, when the pins are inserted into the positioning through holes, the pins can form an electrical contact surface with respect to two perpendicular surfaces of the inner wall of the positioning through hole of the oblong hole or the elliptical-like hole.
Preferably, the at least two positioning vias are located on two opposite sides of the area to be protected, respectively.
Preferably, the light-curing glue is conductive.
Compared with the prior art, the utility model relates to a circuit board with a shield, which is characterized in that at least two positioning through holes are arranged on the periphery of the area to be protected on the main body of the circuit board, so that the pins which extend downwards and are of a bent structure are clamped and fixed, and after the pins are clamped and positioned with the positioning through holes, light-cured glue is used for filling the positioning through holes, and then the shield is fixed on the main body of the circuit board by illumination, therefore, the design is simple and easy to realize, meanwhile, the limitation of the layout area on the circuit board is greatly released, in addition, the difficulty of contraposition assembly and gluing between components is low, enough strength of engagement and fixation can be still maintained through the light-cured glue, the shield is not easy to fall off, the reliability of the shield is greatly increased, and meanwhile, compared with the unsoldering construction method, the requirement of secondary processing (rework) is easy to a lot, therefore, the cost of each link can be effectively reduced.
[ description of the drawings ]
Fig. 1 is an exploded perspective view of a circuit board with a shield according to the prior art.
Fig. 2 is an exploded perspective view of another prior art circuit board with a shield.
Fig. 3 is a schematic exploded view of the circuit board with the isolation cover according to the present invention.
Fig. 4 is a schematic perspective view of the circuit board with the isolation cover according to the present invention.
Fig. 5 is a schematic cross-sectional view of the circuit board with the shield according to the present invention.
[ detailed description ] embodiments
Referring to fig. 3-4, the present invention provides a circuit board with a shield, which includes a circuit board main body 1 and a shield 2.
The circuit board body 1 has a first surface 10 and a second surface 11 opposite to each other, and at least two positioning vias 12 penetrating through the first surface 10 and the second surface 11, wherein the positioning vias 12 may be through or non-through holes having a conductive property on an inner wall, a region 100 to be protected of an electronic component (not shown) is disposed on the first surface 10, and the at least two positioning vias 12 are opened on a peripheral side of the region 100 to be protected. In the present embodiment, the at least two positioning via holes 12 are respectively located at two opposite sides of the area to be protected 100 and have a shape of an oblong hole or an elliptical hole.
The shielding case 2 is made of a metal plate, and has a cover body 20 covering the protection area 100, and pins 21 extending downward from the edge of the cover body 20 and having a bent structure, the pins 21 can be inserted into the corresponding positioning vias 12, and the cover body 20 is firmly fixed on the circuit board main body 1 by filling light-curing adhesive (not shown) into the positioning vias 12 for light-curing, so as to protect the electronic component in the area 100 to be protected by the shielding effect generated by the shielding case 2, and simultaneously connect the positioning vias with the same conductive property by the conductive property of the shielding case 2 itself, so as to ground the noise of the signal on the shielding case, thereby further enhancing the protection of the electronic component and the signal. In the present embodiment, the pins 21 are bent elastic pieces, as shown in fig. 5, the pins 21 contact through the bent elastic pieces at two vertical surfaces of the inner wall of the through hole 12 shaped like a long circular hole or an elliptical hole, that is, after the pins 21 are inserted into the through hole 12, the local plane of the bent elastic pieces closely contacts the vertical surfaces of the through hole shaped like a long circular hole or an elliptical hole, so as to form an electrically connected grounding effect, thereby achieving the effect of protecting the electronic element on the first surface of the circuit board.
In this embodiment, the light-curing adhesive may also be a conductive light-curing adhesive to ensure the conductive and grounding effect between the isolation cover 2 and the circuit board 1.
To sum up, the present invention provides a circuit board with a shield, which is mainly characterized in that at least two positioning through holes 12 are arranged around the area to be protected on the circuit board main body 1, so as to provide the cover body 20 of the shield 2 to be clamped by the pins 21 extending downwards along the edge and having a bent elastic sheet structure, and after the pins 21 are clamped with the positioning through holes 12, light curing adhesive is filled in the positioning through holes 12, so as to firmly fix the shield 2 on the circuit board main body 1, therefore, the present invention provides a circuit board with a shield which has a simple assembly process, fewer parts, lower overall cost, and because the light curing adhesive is used for fixing, the shield 2 is not easy to be separated, the reliability of the shield 2 in assembly and processing is greatly increased, in addition, because only the positioning through holes 12 are arranged on the circuit board main body 1 to be fixed with the shield 2, the layout area required to be occupied is small, so that the effective layout area on the circuit board can be increased.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A circuit board having a cage, comprising:
the circuit board comprises a circuit board main body and a circuit board, wherein the circuit board main body is provided with a first surface and a second surface which are opposite to each other, and at least two positioning through holes which penetrate through the first surface and the second surface, the first surface is provided with a region to be protected for arranging electronic elements, and the at least two positioning through holes are arranged on the periphery of the region to be protected; and
the isolation cover is made of metal plates and is provided with a cover body capable of covering the protection area and pins extending downwards from the positions of the positioning through holes corresponding to the cover body, the pins can be correspondingly clamped into the positioning through holes, and the cover body is fixed on the circuit board main body by filling light curing glue into the positioning through holes and irradiating light for curing.
2. The circuit board with the shielding case as claimed in claim 1, wherein the positioning through holes are shaped like oblong holes or elliptical holes and have conductive properties on inner walls thereof.
3. The circuit board with the shielding case of claim 2, wherein the pins are bent spring structures.
4. The circuit board with the shielding case of claim 3, wherein the pins form an electrical contact surface with respect to two perpendicular surfaces of the inner wall of the positioning via holes of the oblong hole or the elliptical-like hole when the pins are inserted into the positioning via holes.
5. The circuit board with shielding case of claim 1, wherein the at least two positioning vias are respectively located at two opposite sides of the area to be protected.
6. The circuit board with the shielding case of claim 1, wherein the light-curing adhesive is a conductive light-curing adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022392692.2U CN213280542U (en) | 2020-10-23 | 2020-10-23 | Circuit board with isolation cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022392692.2U CN213280542U (en) | 2020-10-23 | 2020-10-23 | Circuit board with isolation cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213280542U true CN213280542U (en) | 2021-05-25 |
Family
ID=75950855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022392692.2U Active CN213280542U (en) | 2020-10-23 | 2020-10-23 | Circuit board with isolation cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213280542U (en) |
-
2020
- 2020-10-23 CN CN202022392692.2U patent/CN213280542U/en active Active
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