CN210053758U - Electromagnetic shielding device for module - Google Patents

Abstract

The utility model relates to an electronic components technical field, in particular to electromagnetic shielding device for module, including the apron and with apron swing joint's bottom plate, the apron with the inside of bottom plate all has shielding layer structure, the four corners department of bottom plate upper surface is equipped with stop device, the apron with the inside of bottom plate all has shielding layer structure, and this kind of shielding layer structure comprises electrolytic copper layer, alloy-layer and cast iron layer, and thickness is moderate, can play certain shielding effect to electromagnetic radiation, and stop device comprises limiting plate and metal mesh, and the metal mesh is with limiting plate connection at the bottom plate four corners department on the surface, when carrying out spacingly to the module, the cross space that forms on the bottom plate can be used for stretching out and the heat dissipation of wire, simple structure, convenient to use.

Description

Electromagnetic shielding device for module

Technical Field

The utility model relates to an electronic components technical field, in particular to electromagnetic shielding device for module.

Background

Electromagnetic interference, EMI for short, refers to an interference phenomenon generated after electromagnetic waves and electronic components act, and includes two types, namely conducted interference and radiated interference. Conducted interference refers to coupling (interfering) a signal on one electrical network to another electrical network through a conductive medium. The radiation interference means that an interference source couples (interferes) signals to another electric network through space, and in the design of a high-speed PCB and a system, a high-frequency signal line, pins of an integrated circuit, various connectors and the like can be radiation interference sources with antenna characteristics and can emit electromagnetic waves and influence the normal work of other systems or other subsystems in the system.

Electromagnetic immunity performance, EMS for short, is that when each or system in certain environment normally operates, each or system can bear various types of electromagnetic interference, which means that the equipment is sensitive to electromagnetic interference, and the more sensitive the equipment is, the more easily the equipment is interfered, and this electromagnetic interference mainly has: electrostatic discharge, electrical fast transient bursts at the power port, signal lines, electrical fast transient bursts at the control line port, electromagnetic radiation transmitted from space to the product housing, conducted interference introduced by the power port, and voltage sags and disruptions at the power port.

At the present stage, a special protection device is lacked to protect the module, and each component in the module can be used as a radiation interference source to interfere with the work of an external circuit and can be interfered by the external circuit system, so that the protection device capable of shielding the module to a certain extent is necessary to be designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electromagnetic shielding device for module to solve the problem among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: including the apron and with apron swing joint's bottom plate, the apron with the inside of bottom plate all has shielding layer structure, the four corners department of bottom plate upper surface is equipped with stop device.

Preferably, the shielding layer structure is composed of an electrolytic copper layer, an alloy layer and a cast iron layer, respectively, and the cast iron layer is located between the electrolytic copper layer and the alloy layer.

Preferably, the limiting device is composed of a limiting plate and a metal net, the limiting plate is connected to the upper surface of the bottom plate through the metal net, and a limiting groove is formed in the center of the upper surface of the limiting plate.

Preferably, the four corners of the lower surface of the cover plate are fixedly provided with limiting bulges, and the limiting bulges are matched with the limiting grooves.

Preferably, the four opposite corners of the limiting plate are provided with rectangular limiting notches.

Preferably, a rubber layer is laid on the inner wall of the limiting groove.

The utility model discloses a technological effect and advantage:

firstly, the cover plate and the bottom plate are internally provided with shielding layer structures, and the shielding layer structures consist of electrolytic copper layers, alloy layers and cast iron layers, are moderate in thickness and can play a certain shielding effect on electromagnetic radiation;

secondly, stop device comprises limiting plate and metal mesh, and the metal mesh is connected the limiting plate on the surface of bottom plate four corners department, carries on spacingly to the module in, and the cross space that forms on the bottom plate can be used for stretching out and the heat dissipation of wire, simple structure, convenient to use.

Drawings

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

Fig. 2 is a schematic structural diagram of the bottom plate of the present invention.

Fig. 3 is a schematic structural diagram of the cover plate of the present invention.

Fig. 4 is a cross-sectional view of the bottom plate of the present invention.

Fig. 5 is a cross-sectional view of the cover plate of the present invention.

Fig. 6 is a partial view of fig. 4 according to the present invention.

In the figure: 1. a cover plate; 2. a base plate; 3. a shielding layer structure; 301. electrolytic copper layer; 302. an alloy layer; 303. casting an iron layer; 4. a limiting device; 401. a limiting plate; 4011. a limiting groove; 402. a metal mesh; 5. a limiting notch; 6. a limiting bulge; 7. a rubber layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides an electromagnetic shielding device for module as shown in fig. 1-5, including apron 1 and with apron 1 swing joint's bottom plate 2, apron 1 all has shielding layer structure 3 with bottom plate 2's inside, and the four corners department of 2 upper surfaces of bottom plate is equipped with stop device 4.

As shown in fig. 4 to 5, the shielding layer structure 3 is composed of an electrolytic copper layer 301, an alloy layer 302 and a cast iron layer 303, respectively, the cast iron layer 303 is located between the electrolytic copper layer 301 and the alloy layer 302, the cast iron layer 303 is located at the middle position, and the electrolytic copper layer 301 and the alloy layer 302 are respectively located at both sides of the cast iron layer 303, without being sequentially distinguished.

As shown in fig. 2 and 6, the region in four stop device 4 besieged city has formed criss-cross spacing cavity, can be spacing to the module, stop device 4 has stopper plate 401 and metal mesh 402 to constitute, stopper plate 401 passes through metal mesh 402 and connects the upper surface at bottom plate 2, stopper plate 401 bottom is connected the upper surface at bottom plate 2 through metal mesh 402 all around, the cavity in metal mesh 402 besieged city here, can play the effect of electromagnetic shield on the one hand, on the other hand is convenient for the circulation of air, be favorable to the heat dissipation of the components and parts on the module, the central point of stopper plate 401 upper surface puts and is equipped with spacing recess 4011, rubber layer 7 has been laid to the inner wall of spacing recess, when spacing arch 6 is pegged graft in spacing recess 4011, rubber layer 7 has certain frictional force, it is more firm to make spacing arch 6 fixed, moreover.

As shown in fig. 3, the relative corners of four limiting plates 401 are provided with rectangular limiting notches 5, the rectangular cavity formed inside the limiting notches 5 can limit the module, the type of the module with a suitable shape is increased, the four corners of the lower surface of the cover plate 1 are fixedly provided with limiting protrusions 6, and the limiting protrusions 6 can be movably inserted into the limiting grooves 4011, so that the fixing and the opening are facilitated.

This practical theory of operation:

place the module on bottom plate 2, peg graft spacing arch 6 on apron 1 in spacing recess 4011 again, the wire of being connected on the module can be arranged in the cross cavity that stop device 4 constitutes, and the wiring is convenient orderly, when dismantling, only need with apron 1 extract from bottom plate 2 can.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. The utility model provides an electromagnetic shield for module, characterized in that, including apron (1) and with apron (1) swing joint's bottom plate (2), apron (1) with the inside of bottom plate (2) all has shielding layer structure (3), the four corners department of bottom plate (2) upper surface is equipped with stop device (4).

2. An electromagnetic shield for a module as set forth in claim 1, wherein: the shielding layer structure (3) is respectively composed of an electrolytic copper layer (301), an alloy layer (302) and a cast iron layer (303), wherein the cast iron layer (303) is positioned between the electrolytic copper layer (301) and the alloy layer (302).

3. An electromagnetic shield for a module as set forth in claim 1, wherein: stop device (4) have limiting plate (401) and metal mesh (402) to constitute, limiting plate (401) pass through metal mesh (402) are connected the upper surface of bottom plate (2), the central point of limiting plate (401) upper surface puts and is equipped with spacing recess (4011).

4. An electromagnetic shield apparatus for a module set according to claim 3, wherein: rectangular limiting notches (5) are formed in the opposite corners of the four limiting plates (401).

5. An electromagnetic shield apparatus for a module set according to claim 3, wherein: the four corners department of apron (1) lower surface is fixed and is equipped with spacing arch (6), spacing arch (6) with spacing recess (4011) cooperate.

6. An electromagnetic shield apparatus for a module set according to claim 3, wherein: and a rubber layer (7) is laid on the inner wall of the limiting groove (4011).

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