CN218735147U

CN218735147U - Electromagnetic interference resistance's circuit board

Info

Publication number: CN218735147U
Application number: CN202222568489.5U
Authority: CN
Inventors: 程文金; 胡文华
Original assignee: Zhaoqing High Tech Zone Huadi Electronic Technology Co ltd
Current assignee: Shenzhen Shuotaike Electronic Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-24
Anticipated expiration: 2032-09-28

Abstract

The utility model discloses an electromagnetic interference resistance's circuit board, including the infrabasal plate, the up end fixedly connected with shielding film of infrabasal plate, the up end fixedly connected with upper substrate of shielding film, the up end of upper substrate is provided with the pad, the inboard of pad is provided with the copper foil, the copper foil welding is at the up end of pad, nonmetal via hole has been seted up to the up end of pad, the metal via hole has been seted up to the up end of copper foil, four fixed columns of group of up end fixedly connected with of upper substrate, the up end of fixed column can be dismantled through the screw and be connected with the shielding plate, the lower extreme fixedly connected with of fixed column shields the board down, the lower extreme of infrabasal plate is provided with down the spacing seat. The electromagnetic interference preventing circuit board is provided with the upper shielding plate, the lower shielding plate and the shielding film, so that the upper shielding plate, the lower shielding plate and the shielding film are matched with each other for use, the electromagnetic interference preventing circuit board can be prevented from being interfered by external electromagnetic interference, and the electromagnetic shielding performance of the circuit board is better.

Description

Electromagnetic interference resistance's circuit board

Technical Field

The utility model relates to a circuit board technical field specifically is an electromagnetic interference resistance's circuit board.

Background

The circuit board is called as circuit board, PCB board, aluminum base board, high frequency board, printed circuit board, etc. Along with the high-speed development of electronic technology, the requirements on electronic products are higher and higher, the functions are more and more, the integration level of chips is higher and higher, meanwhile, the design requirements on circuit boards are higher and higher, and the printed circuit boards are developed in the direction of high speed, multi-layer, multi-function, large capacity and small volume.

With the increasing number of functional modules integrated on the printed circuit board and the larger uncertainty of the environmental change of the electronic product in practical application, how to reduce the external electromagnetic interference becomes a problem which troubles designers of the printed circuit board, and therefore, an electromagnetic interference preventing circuit board is provided.

Disclosure of Invention

An object of the utility model is to provide an electromagnetic interference resistance's circuit board to it is more and more along with integrated functional module on printed circuit board to propose in solving above-mentioned background art, and in addition electronic product exists this great uncertainty in practical application's environmental change, so just become puzzlement printed circuit board designer's problem about how to reduce external electromagnetic interference.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electromagnetic interference resistance's circuit board, includes the infrabasal plate, the up end fixedly connected with shielding film of infrabasal plate, the up end fixedly connected with upper substrate of shielding film, the up end of upper substrate is provided with the pad, the inboard of pad is provided with the copper foil, the copper foil welding is at the up end of pad, nonmetal via hole has been seted up to the up end of pad, metal via hole has been seted up to the up end of copper foil, four fixed columns of group of up end fixedly connected with of upper substrate, the up end of fixed column can be dismantled through the screw and be connected with the upper shield plate, the lower extreme fixedly connected with lower shield plate of fixed column, the lower extreme of infrabasal plate is provided with down the spacing seat, lower spacing seat fixed connection is in the outside of fixed column, the upper end of upper substrate is provided with the spacing seat, go up spacing seat threaded connection in the fixed column outside.

Preferably, screw holes are formed in four corner positions of the upper end faces of the upper substrate and the lower substrate.

Preferably, the upper end surface of the fixing column is provided with a threaded hole.

Preferably, the upper substrate and the lower substrate are both made of glass epoxy resin.

Preferably, the upper shield plate has the same size as the upper substrate.

Compared with the prior art, the beneficial effects of the utility model are that: the circuit board capable of preventing electromagnetic interference is provided with the upper shielding plate, the lower shielding plate and the shielding film which are matched with each other for use, so that the electromagnetic interference resistance of the circuit board can be realized, the external electromagnetic interference can be resisted, and the electromagnetic shielding performance of the circuit board is better.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the top-view structure of the upper substrate of the present invention.

Fig. 3 is a schematic view of the top view structure of the fixing column of the present invention.

In the figure: 1. a lower substrate; 2. a shielding film; 3. an upper substrate; 4. a screw; 5. an upper shield plate; 6. fixing a column; 7. a non-metallic via; 8. a metal via; 9. a screw hole; 10. a pad; 11. a copper foil; 12. a threaded hole; 13. a lower shield plate; 14. an upper limiting seat; 15. a lower limiting seat.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an electromagnetic interference resistance's circuit board, includes infrabasal plate 1, the up end fixedly connected with shielding film 2 of infrabasal plate 1, the up end fixedly connected with upper substrate 3 of shielding film 2, the up end of upper substrate 3 is provided with pad 10, the inboard of pad 10 is provided with copper foil 11, copper foil 11 welds the up end at pad 10, nonmetal via hole 7 has been seted up to the up end of pad 10, metal via hole 8 has been seted up to the up end of copper foil 11, the up end fixedly connected with four fixed columns 6 of group of last terminal surface of upper substrate 3, the up end of fixed column 6 can be dismantled through screw 4 and be connected with upper shield 5, shielding plate 13 under the lower extreme fixedly connected with of fixed column 6, the lower extreme of infrabasal plate 1 is provided with lower spacing seat 15, lower spacing seat 15 fixed connection is in the outside of fixed column 6, the upper end of upper substrate 3 is provided with upper limit seat 14, upper limit seat 14 threaded connection is in the fixed column 6 outside.

Screw hole 9 has all been seted up to the up end four corners position of upper substrate 3 and infrabasal plate 1, has made things convenient for through the screw fixed to upper substrate 3 and infrabasal plate 1, threaded hole 12 is seted up to the up end of fixed column 6, is convenient for fix shield 5 on fixed column 6 through the screw, upper substrate 3 and infrabasal plate 1 are glass epoxy and make, have improved the life of upper substrate 3 and infrabasal plate 1, upper shield 5 is the same with the size of upper substrate 3, can play fine shielding effect.

The working principle is as follows: through being provided with upper shield plate 5, lower shield plate 13 and shielding film 2, make its use of mutually supporting, can realize the electromagnetic interference resistance to the circuit board to can resist outside electromagnetic interference, make the electromagnetic shielding performance of circuit board better.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electromagnetic interference resistance's circuit board, includes infrabasal plate (1), its characterized in that: the utility model discloses a fixing structure of a printed circuit board, including infrabasal plate (1), shielding film (2), upper end face fixedly connected with top base plate (3) of shielding film (2), the upper end face of top base plate (3) is provided with pad (10), the inboard of pad (10) is provided with copper foil (11), copper foil (11) are welded at the upper end face of pad (10), nonmetal via hole (7) have been seted up to the upper end face of pad (10), metal via hole (8) have been seted up to the upper end face of copper foil (11), the upper end face fixedly connected with four fixed columns (6) of top base plate (3), the upper end face of fixed column (6) can be dismantled through screw (4) and be connected with last shield plate (5), shield plate (13) under the lower extreme fixedly connected with of fixed column (6), the lower extreme of infrabasal plate (1) is provided with lower spacing seat (15), lower spacing seat (15) fixed connection is in the outside of fixed column (6), the upper end of top base plate (3) is provided with upper limit seat (14), upper limit seat (14) threaded connection is in the fixed column (6) the outside.

2. An electromagnetic interference preventing circuit board according to claim 1, wherein: screw holes (9) are formed in the four corner positions of the upper end faces of the upper substrate (3) and the lower substrate (1).

3. An electromagnetic interference preventing circuit board according to claim 1, wherein: the upper end surface of the fixing column (6) is provided with a threaded hole (12).

4. An electromagnetic interference preventing circuit board according to claim 1, wherein: the upper substrate (3) and the lower substrate (1) are both made of glass epoxy resin.

5. An electromagnetic interference preventing circuit board according to claim 1, wherein: the upper shielding plate (5) and the upper substrate (3) have the same size.