ELECTROMAGNETIC SHIELDING STRUCTURE AND ELECTRONIC DEVICE HAVING THE SAME

A electromagnetic shielding structure, including a first shielding member and a second shielding member. The first shielding member includes a first bottom wall and a first side wall extending from an outer edge of the first bottom wall, the first bottom wall and the first side wall of the first shielding member form a first cavity, the first shielding member comprises a first cavity partition wall, and the first cavity partition wall partitions the first cavity into at least two first accommodating cavities. The second shielding member is detachably mounted on the first shielding member, so as to seal the first cavity of the first shielding member. The first shielding member and the second shielding member jointly accommodate the circuit board therebetween the first shielding member and the second shielding member, to perform electromagnetic shielding for the circuit board. The electromagnetic shielding structure may protect the circuit board from interference from an external signal, thereby improving a shielding effect.

BACKGROUND

Technical Field

The present application relates to the field of electromagnetic interference processing technologies, and in particular, to an electromagnetic shielding structure applied to an electronic device such as a circuit board.

Related Art

With the rapid development of electronic technologies, the use of new functions and new parts in electronic devices is also continuously increased. As electronic devices are developed toward a higher processing capacity and a wider application field, circuits in a circuit board in an electronic device also become more complex and denser, where, however, electric fields of all lines interfere with each other, resulting in electromagnetic interference between the circuits in the circuit board. In addition, an external signal may also interfere with the electronic device. Therefore, in the field of electronic devices, prevention of electromagnetic interference becomes an urgent problem to be resolved currently.

SUMMARY

To resolve the foregoing technical problems, embodiments of the present application provide an electromagnetic shielding structure with good shielding performance and an electronic device having the electromagnetic shielding structure.

To resolve the foregoing technical problems, the embodiments of the present application provide the following technical solutions:

An electromagnetic shielding structure is applied to a circuit board. The electromagnetic shielding structure includes a first shielding member and a second shielding member. The first shielding member includes a first bottom wall and a first side wall extending from an outer edge of the first bottom wall. The first bottom wall and the first side wall of the first shielding member form a first cavity. The first shielding member includes a first cavity partition wall, and the first cavity partition wall partitions the first cavity into at least two first accommodating cavities. The second shielding member is detachably mounted on the first shielding member, so as to seal the first cavity of the first shielding member. The first shielding member and the second shielding member jointly accommodate the circuit board between the first shielding member and the second shielding member, to perform electromagnetic shielding for the circuit board.

In some embodiments, one end of the first cavity partition wall is in contact with the circuit board or is connected to the circuit board.

In some embodiments, the first cavity partition wall further includes a first sealing rubber strip disposed on an end face of the first cavity partition wall, wherein the first sealing rubber strip is in contact with the circuit board or is connected to the circuit board, so as to seal the at least two first accommodating cavities.

In some embodiments, electronic components are disposed on the circuit board, the circuit board includes a first surface and second surface that are oppositely disposed, and the electronic components are all disposed on the first surface; and the second shielding member is of a flat-plate shape, the first surface faces toward the first cavity of the first shielding member, the second surface faces toward the second shielding member, and the entire surface of the second surface is in contact with the second shielding member.

In some embodiments, a first heat dissipating portion is disposed on the first shielding member, wherein the electronic components disposed on the first surface perform heat dissipation by using the first heat dissipating portion.

In some embodiments, the first heat dissipating portion is in contact with or is connected to the electronic components disposed on the first surface.

In some embodiments, a thermally conductive member is disposed between the first heat dissipating portion and the electronic components disposed on the first surface, and the thermally conductive member is in contact with or is connected to the electronic components disposed on the first surface, so that heat generated by the electronic components disposed on the first surface is transferred to the first heat dissipating portion by using the thermally conductive member.

In some embodiments, the thermally conductive member is thermally conductive adhesive or thermally conductive foam.

In some embodiments, electronic components are disposed on the circuit board, the circuit board includes a first surface and a second surface that are oppositely disposed, and the electronic components are separately disposed on the first surface and the second surface; the second shielding member includes a second bottom wall and a second side wall extending from an outer edge of the second bottom wall, the second bottom wall and the second side wall form a second cavity, the first surface faces toward the first cavity, and the second surface faces toward the second cavity.

In some embodiments, the second shielding member includes a second cavity partition wall, wherein the second cavity partition wall partitions the second cavity into at least two second accommodating cavities, wherein one end of the second cavity partition wall is in contact with the second surface or is connected to the second surface.

In some embodiments, the second cavity partition wall further includes a second sealing rubber strip disposed on an end face of the second cavity partition wall, wherein the second sealing rubber strip is in contact with the second surface or is connected to the second surface, so as to seal the at least two second accommodating cavities.

In some embodiments, a first heat dissipating portion is disposed on the first shielding member, wherein the electronic components disposed on the first surface perform heat dissipation by using the first heat dissipating portion; and a second heat dissipating portion is disposed on the second shielding member, wherein the electronic components disposed on the second surface perform heat dissipation by using the second heat dissipating portion.

In some embodiments, the first heat dissipating portion is in contact with or is connected to the electronic components disposed on the first surface, and/or the second heat dissipating portion is in contact with or is connected to the electronic components disposed on the second surface.

In some embodiments, a thermally conductive member is disposed between the first heat dissipating portion and the electronic components, wherein the thermally conductive member is in contact with or is connected to the electronic components disposed on the first surface, so that heat generated by the electronic components disposed on the first surface is transferred to the first heat dissipating portion by using the thermally conductive member.

In some embodiments, a thermally conductive member is disposed between the second heat dissipating portion and the electronic components, wherein the thermally conductive member is in contact with or is connected to the electronic components disposed on the second surface, so that heat generated by the electronic components disposed on the second surface is transferred to the second heat dissipating portion by using the thermally conductive member.

In some embodiments, the thermally conductive member is thermally conductive adhesive or thermally conductive foam.

In some embodiments, the circuit board includes two circuit boards that are disposed in parallel, wherein the first surface is located on one of the circuit boards, and the second surface is located on the other of the circuit boards.

In some embodiments, the first shielding member and/or the second shielding member are/is provided with heat dissipating strips/a heat dissipating strip.

In some embodiments, the first shielding member and the second shielding member are connected in a snap-fit manner.

In some embodiments, one of the first shielding member and the second shielding member includes a protrusion, and the other includes a gap, wherein the protrusion is inserted in the gap.

In some embodiments, an inner wall of the first shielding member or the second shielding member is provided with a groove, and the circuit board is inserted in the groove to be fixed inside the electromagnetic shielding structure.

In some embodiments, the circuit board is provided with a plurality of first through holes, and the first shielding member and/or the second shielding member are/is provided with a plurality of second through holes whose position distribution and number are in one-to-one correspondence with those of the first through holes, and wherein the first through holes and the second through holes are configured to mount the circuit board in the electromagnetic shielding structure.

In some embodiments, the first shielding member and/or the second shielding member are/is integrally molded.

To resolve the foregoing technical problems, the embodiments of the present application further provide the following technical solution:

An electronic device is provided, including a circuit board and the electromagnetic shielding structure as described above, where the first shielding member and the second shielding member jointly accommodate the circuit board between the first shielding member and the second shielding member.

Compared with the prior art, the first shielding member and the second shielding member jointly accommodate the circuit board between the first shielding member and the second shielding member, so that the circuit board can be protected from electromagnetic interference from an external signal, and electromagnetic radiation of the circuit board can also be limited from exceeding the electromagnetic shielding structure, thereby improving an electromagnetic shielding effect.

In addition, the first shielding member includes at least two first accommodating cavities independent of each other, and electronic components of the circuit board may be separately accommodated in the first accommodating cavities independent of each other, so that electromagnetic interference generated between the electronic components of the circuit board can be reduced.

DETAILED DESCRIPTION

For ease of understanding the present application, the present application is described in detail below with reference to the accompanying drawings and specific implementations. It should be noted that when an element is expressed as “being fixed on” another element, the element may be directly on the another element, or there may be one or more elements between the element and the another element. When an element is expressed as “being connected to” another element, the element may be directly connected to the another element, or there may be one or more elements between the element and the another element. The terms “vertical”, “horizontal”, “left”, “right”, “internal”, “external” and similar expressions used in this specification are merely for a purpose of description.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as common understanding of persons skilled in the art of the present application. The terms used in this specification of the present application are only for a purpose of describing specific implementations instead of limiting the present application. The term “and/or” used in this specification includes any or all combinations of one or more associated projects that are listed.

In addition, technical features involved in the different embodiments of the present application described below may be combined with each other provided that there is no conflict.

The embodiments of the present application are further described with reference to the accompanying drawings.

Referring toFIG. 1andFIG. 2, an embodiment of the present application provides an electromagnetic shielding structure100, configured to shield a circuit board200from electromagnetic interference and to perform heat dissipation. The electromagnetic shielding structure100includes a first shielding member10and a second shielding member20. The first shielding member10and the second shielding member20jointly accommodate and seal the circuit board200between the first shielding member10and the second shielding member20.

Referring toFIG. 3andFIG. 4together, the circuit board200includes a first surface2001and a second surface2002that are oppositely disposed. For convenience of mounting the circuit board200inside the electromagnetic shielding structure100, the circuit board200is provided with a plurality of first through holes2003. The through holes2003run through the first surface2001and the second surface2002. A number of the first through holes2003may be determined according to an actual requirement, and may be, for example, 4, 6, or 8. The circuit board200further includes an antenna interface2004. In this embodiment, the circuit board200is a single-sided circuit board. That is, all electronic components disposed on the circuit board200are disposed on only the first surface2001of the circuit board200, and no electronic part or component is disposed on the second surface2002of the circuit board200. It may be understood that a number of the circuit boards200is not limited to one and may be two or more. A plurality of circuit boards are accommodated together in the electromagnetic shielding structure100. Preferably, the plurality of circuit boards are disposed in parallel. For example, when the number of the circuit boards is 2, the foregoing first surface2001may be located on one of the circuit boards, and the foregoing second surface2002may be located on the other of the circuit boards.

The first shielding member10is a case, and is approximately a hollow and cuboid structure. It may be understood that in some other embodiments, the first shielding member10may alternatively be set to another shape as required, for example, a cube. The first shielding member10may be formed by machining metal material, such as aluminum, copper and stainless steel, or other suitable material.

The first shielding member10accommodates the circuit board200. Specifically, the first shielding member10includes a first bottom wall102, a first side wall104, a first cavity partition wall106, a protruding column108and a first heat dissipating portion110. The first side wall104extends from an outer edge of the first bottom wall102. The first bottom wall102and the first side wall104form a first cavity112. The first cavity partition wall106is connected to the first bottom wall102and the first side wall104. The first cavity partition wall106partitions the first cavity112into at least two first accommodating cavities1120independent of each other. One end of the first cavity partition wall106is in contact with the circuit board200or is connected to the circuit board200. The circuit board200is accommodated in the first cavity112. The first surface2001of the circuit board200faces toward the first cavity112of the first shielding member10. The electronic components of the circuit board200are separately disposed inside the at least two first accommodating cavities1120, to shield circuits of the circuit board200from electromagnetic interference between the circuits. In some implementations, the first cavity partition wall106further includes a sealing rubber strip disposed on an end face of the first cavity partition wall106. After the electromagnetic shielding structure100is mounted, the sealing rubber strip is in contact with or is connected to the circuit board200, to seal the at least two first accommodating cavities1120. Specifically, the sealing rubber strip may contain a metal substance, so that the sealing rubber is electrically connected to the first cavity partition wall106, and the at least two first accommodating cavities1120partitioned by the first cavity partition wall106can better shield the circuit board200.

Both the protruding column108and the first heat dissipating portion110extend from the first bottom wall102, and are located inside the first accommodating cavities1120.

Position distribution and a number of the protruding columns108are in one-to-one correspondence with the first through holes2003of the circuit board200. For example, if the number of the first through holes2003of the circuit board200is 4, the number of the protruding columns108is also4. Moreover, each of the protruding columns108has a screw hole.

The first heat dissipating portion110is in contact with or is connected to the electronic components on the circuit board200. Specifically, the first heat dissipating portion110is in contact with or is connected to the electronic components disposed on the first surface2001, to perform heat dissipation for the electronic components. Heat generated by the electronic components disposed on the circuit board200is transferred to the whole first shielding member10by using the first heat dissipating portion110, and then the heat is dissipated by using the first shielding member10. The first heat dissipating portion110may be, in a face-to-face manner, in direct contact with or be connected to the electronic components generating a relatively large amount of heat on the circuit board200, to conveniently perform heat dissipation effectively and rapidly.

It may be understood that in some other embodiments, the first cavity partition wall106may be omitted, the at least two first accommodating cavities1120may be partitioned by using the first heat dissipating portion110, and an end face of the first heat dissipating portion110is in contact with or is connected to the first surface2001of the circuit board200.

The first shielding member10is integrally molded. Specifically, the first bottom wall102, the first side wall104and the first cavity partition wall106are an integrated structure. The first bottom wall102, the first side wall104and the first cavity partition wall106may be set to the integrated structure in any suitable manner such as integrated casting, stamping, or another suitable manner. To further ensure sealing, one end of the first cavity partition wall106is in contact with the circuit board200.

It may be understood that in some other embodiments, the first cavity partition wall106and the first bottom wall102and the first side wall104may alternatively be separate structures. The first cavity partition wall106may be mounted on the first bottom wall102and the first side wall104. For example, the first cavity partition wall106is welded on the first bottom wall102and the first side wall104. In addition, to ensure sealing, the first cavity partition wall106is snugly mounted on the first bottom wall102and the first side wall104.

The second shielding member20is of a flat-plate shape. The second surface2002of the circuit board200faces toward the second shielding member20. To ensure a heat dissipation effect, the second shielding member20is in contact with the second surface2002, and the entire surface of the second surface2002is in contact with the second shielding member20. The second shielding member20is approximately of a rectangular shape. In some embodiments, the second shielding member20may alternatively be set to another shape, such as a square, as required. The second shielding member20is detachably mounted on the first shielding member10, to seal the first cavity112of the first shielding member10.

In some embodiments, to fit the first shielding member10to form a seal structure, the second shielding member20has a cross-sectional area approximately the same as that of the first shielding member10at a junction between the second shielding member20and the first shielding member10. The second shielding member20may tightly fit an opening of the first shielding member10in a snap-fit manner, so that the second shielding member20and a frame of the first shielding member10are tightly closed up. The second shielding member20may be detachably mounted on the first shielding member10by using a screw and a thread or in another suitable manner. Moreover, to more effectively dissipate heat generated by the circuit board200during working, the second shielding member20may be formed by machining any material with good thermal conductivity, for example, metal material, such as aluminum alloy or copper alloy, or other suitable material with good thermal conductivity.

The second shielding member20is provided with a plurality of second through holes203. To ensure that the second shielding member20can be mounted on the first shielding member10, position distribution and the number of the protruding columns108of the first shielding member10, the position distribution and the number of the second through holes203of the second shielding member20, and the position distribution and the number of the first through holes2003of the circuit board200are in one-to-one correspondence. The first through holes2003and the second through holes203are configured to mount the circuit board200in the electromagnetic shielding structure100. In another implementation, the plurality of second through holes203may be formed on the first shielding member10, or the second through holes203may be formed on both the first shielding member10and the second shielding member20.

The electromagnetic shielding structure100includes a plurality of screws204. When the electromagnetic shielding structure100is assembled, the screws204sequentially pass through the second through holes203and the first through holes2003, and are fixed into the thread holes of the protruding columns108, to fix the first shielding member10, the circuit board200and the second shielding member20together. Moreover, to ensure sealing, the second shielding member20tightly covers the opening of the first shielding member10.

It may be understood that in some other embodiments, the first shielding member10and the second shielding member20may alternatively be connected in any other suitable manner, for example, snap-fit or clipping.

It may be understood that in some embodiments, an inner wall of the first shielding member10or the second shielding member20is provided with a groove, and the circuit board200is inserted in the groove to be fixed inside the electromagnetic shielding structure100.

In some embodiments, to perform heat dissipation more effectively, heat dissipating strips may be disposed on both the first shielding member10and the second shielding member20, to increase an amount of dissipated heat.

In some embodiments, referring toFIG. 2again, the electromagnetic shielding structure100may further include a thermally conductive member30. The thermally conductive member30is disposed between the first heat dissipating portion110and the electronic components disposed on the first surface2001of the circuit board200. The thermally conductive member30is in contact with or is connected to the electronic components disposed on the first surface2001, so that heat generated by the electronic components disposed on the first surface2001is transferred to the first heat dissipating portion110by using the thermally conductive member30, thereby facilitating heat dissipation. In addition to dissipating heat generated by the circuit board200, the thermally conductive member30may further tightly bond the first shielding member10and the circuit board200together. The thermally conductive member30may be thermally conductive adhesive or thermally conductive foam. The thermally conductive member30may include macromolecular thermally-conductive material or other suitable material such as silica gel and rubber.

Referring toFIG. 1again, the first shielding member10further includes an antenna interface hole113, an adjustment hole114, and a data interface115. The antenna interface2004of the circuit board200protrudes from the antenna interface hole113, to facilitate connecting to an antenna in a plugged manner. The adjustment hole114is configured to adjust a resistor, a digital switch, and the like. The data interface115is configured to connect to a data line in a plugged manner.

In the electromagnetic shielding structure100provided in this embodiment of the present application, the second shielding member20is mounted on the first shielding member10in a sealed manner, to form a sealed space. The circuit board200is accommodated inside the sealed space, so that not only the circuit board200can be protected from interference from an external signal, but also internal electromagnetic radiation of the circuit board20can be limited from exceeding the electromagnetic shielding structure100, thereby improving a shielding effect. In addition, heat generated by the circuit board200can also be effectively dissipated by using the first shielding member10and the second shielding member20, to implement heat dissipation rapidly.

In addition, the first shielding member10includes the at least two first accommodating cavities1120independent of each other, and the electronic components of the circuit board200may be separately accommodated in first accommodating cavities1120independent of each other, so that electromagnetic interference generated between the electronic components of the circuit board200may be reduced.

It should be noted that persons skilled in the art should understand that in some embodiments, if a circuit board is a dual-sided circuit board. That is, two opposite surfaces of the circuit board each are provided with electronic components. A second shielding member may become a structure similar to a first shielding member. An electromagnetic shielding structure configured to mount the dual-sided circuit board is further described below with reference toFIG. 5toFIG. 9.

Referring toFIG. 5toFIG. 8,FIG. 5toFIG. 8show an electromagnetic shielding structure300provided in another embodiment of the present application. The electromagnetic shielding structure300is approximately similar to the electromagnetic shielding structure100provided in the foregoing embodiment. A difference between the electromagnetic shielding structure300and the electromagnetic shielding structure100is that a structure of a second shielding member20aof the electromagnetic shielding structure300is similar to that of the first shielding member10, and the second shielding member20ais a case, including a second bottom wall202a, a second side wall204aextending from an outer edge of the second bottom wall202a, and a second heat dissipating portion206a. The second bottom wall202aand the second side wall204aform a second cavity212a.

The first shielding member10and the second shielding member20ajointly accommodate and seal a circuit board200abetween the first shielding member10and the second shielding member20a. A first surface2001aof the circuit board200afaces toward a first cavity112of the first shielding member10. A second surface2002aof the circuit board200afaces toward the second cavity212aof the second shielding member20a. The electromagnetic shielding structure300may be configured to shield the circuit board200afrom electromagnetic interference and to perform heat dissipation.

The circuit board200ais a dual-sided circuit board. That is, the first surface2001aand the second surface2002aof the circuit board200aeach are provided with electronic components. It may be understood that a number of the circuit boards200ais not limited to one and may be two or more. A plurality of circuit boards are accommodated together in the electromagnetic shielding structure300. Preferably, the plurality of circuit boards are disposed in parallel. For example, when the number of the circuit boards is 2, the foregoing first surface2001amay be located on one of the circuit boards, and the foregoing second surface2002amay be located on the other of the circuit boards.

In some embodiments, the second shielding member20afurther includes a second cavity partition wall, the second cavity partition wall partitions the second cavity212ainto at least two second accommodating cavities2120a, and one end of the second cavity partition wall is in contact with the second surface2002aor is connected to the second surface2002a. In some implementations, the second cavity partition wall further includes a sealing rubber strip disposed on an end face of the second cavity partition wall. After the electromagnetic shielding structure300is mounted, the sealing rubber strip is in contact with or is connected to the second surface2002aof the circuit board200a, to seal the at least two second accommodating cavities2120a. Specifically, the sealing rubber strip may contain a metal substance, so that the sealing rubber is electrically connected to the second cavity partition wall, and the at least two second accommodating cavities2120apartitioned by the second cavity partition wall can better shield the circuit board200a.

The first accommodating cavities1120of the first shielding member10and the first surface2001aof the circuit board200aare located on one side of the circuit board200a. The first accommodating cavities1120of the first shielding member10are configured to accommodate the electronic components on the first surface2001a. Similarly, the second accommodating cavities2120aof the second shielding member20aand the second surface2002aof the circuit board200aare located on the other side of the circuit board200a. The second accommodating cavities2120aof the second shielding member20aare configured to accommodate the electronic components on the second surface2002a.

The electronic components disposed on the first surface2001aof the circuit board200aperform heat dissipation by using the first heat dissipating portion110on the first shielding member10. The electronic components disposed on the second surface2002aof the circuit board200aperform heat dissipation by using the second heat dissipating portion206aon the second shielding member20a.

It may be understood that in some embodiments, the electromagnetic shielding structure300may include the thermally conductive member30in the foregoing embodiment. The thermally conductive member30may be disposed between the first heat dissipating portion110and the electronic components on the first surface2001a. The thermally conductive member30is in contact with or is connected to the electronic components disposed on the first surface2001a, so that heat generated by the electronic components disposed on the first surface2001ais transferred to the first heat dissipating portion110by using the thermally conductive member30. The thermally conductive member30may alternatively be disposed between the second heat dissipating portion206aand the electronic components on the second surface2002a. The thermally conductive member30is in contact with or is connected to the electronic components disposed on the second surface2002a, so that heat generated by the electronic components disposed on the second surface2002ais transferred to the second heat dissipating portion206aby using the thermally conductive member30.

In addition to dissipating heat generated by the circuit board200a, the thermally conductive member30may further tightly bond the first shielding member10and/or the second shielding member20aand the circuit board200atogether. The thermally conductive member30may be thermally conductive adhesive or thermally conductive foam. The thermally conductive member30may include macromolecular thermally-conductive material or other suitable material such as silica gel and rubber.

It may be understood that in different implementations, the first heat dissipating portion110and/or the second heat dissipating portion206aare/is separately in direct contact with the electronic components disposed on the first surface2001aand/or the second surface2002a. Alternatively, the first heat dissipating portion110and/or the second heat dissipating portion206aare separately connected to the electronic components disposed on the first surface2001aand/or the second surface2002aby using the thermally conductive member30.

It may be understood that in some embodiments, to perform heat dissipation more effectively, a heat dissipating strip may be disposed on the second shielding member20a, to increase an amount of dissipated heat.

The second shielding member20ais integrally molded. Specifically, the second bottom wall202a, the second side wall204aand the second heat dissipating portion206aare an integrated structure. The second bottom wall202a, the second side wall204aand the second heat dissipating portion206amay be set to the integrated structure in any suitable manner, such as integrated casting, stamping, or another suitable manner. To further ensure sealing, one end of the second heat dissipating portion206ais in contact with the circuit board200a.

It may be understood that in some other embodiments, the second heat dissipating portion206aand the second bottom wall202aand the second side wall204amay alternatively be separate structures. The second heat dissipating portion206amay be mounted on the second bottom wall202aand the second side wall204a. For example, the second heat dissipating portion206ais welded on the second bottom wall202aand the second side wall204a. In addition, to ensure sealing, the second heat dissipating portion206ais snugly mounted on the second bottom wall202aand the second side wall204a.

It may be understood that in some other embodiments, the antenna interface hole113, the adjustment hole114and the data interface115may alternatively be disposed on the second shielding member20a. Alternatively, some of the antenna interface hole113, the adjustment hole114and the data interface115is/are provided on the first shielding member10, and the other are/is provided on the second shielding member20a. For example, the antenna interface hole113is disposed on the first shielding member10, and the adjustment hole114and the data interface115are disposed on the second shielding member20a.

Referring toFIG. 9,FIG. 9is a locally enlarged diagram of a junction A between the first shielding member10aand the second shielding member20a. The first shielding member10is connected to the second shielding member20ain a snap-fit manner. Specifically, an outer side wall of the second shielding member20ais provided with a gap220a. The first shielding member10is provided with a protrusion120. The protrusion120may be embedded in the gap220a, so that the second shielding member20ais positioned and mounted on the first shielding member10, and sealing can be further ensured. It may be understood that in some other embodiments, an outer side wall of the first shielding member10may be provided with a gap, and the second shielding member20amay be provided with a protrusion.

It may be understood that in some embodiments, an inner wall of the first shielding member10or the second shielding member20ais provided with a groove, and the circuit board200ais inserted in the groove to be fixed inside the electromagnetic shielding structure300.

In the electromagnetic shielding structure300provided in the another embodiment of the present application, the first shielding member10accommodates the electronic components disposed on the first surface2001a; the second shielding member20aaccommodates the electronic components disposed on the second surface2002a, so that the electromagnetic shielding structure300may effectively perform shielding and heat dissipation for the circuit board200a.

In addition, the first shielding member10includes the at least two first accommodating cavities1120independent of each other. The electronic components disposed on the first surface2001aare separately accommodated in the first accommodating cavities1120independent of each other. The second shielding member20aincludes the at least two second accommodating cavities2120aindependent of each other. The electronic components disposed on the second surface2001aare separately accommodated in the second accommodating cavities2120aindependent of each other, so that electromagnetic interference generated between the electronic components of the circuit board200amay be reduced.

Still another embodiment of the present application provides an electronic device. The electronic device includes the electromagnetic shielding structure100and the circuit board200. The first shielding member10and the second shielding member20jointly accommodate and seal the circuit board200between the first shielding member10and the second shielding member20. Alternatively, the electronic device includes the electromagnetic shielding structure300and the circuit board200a. The first shielding member10and the second shielding member20ajointly accommodate and seal the circuit board200abetween the first shielding member10and the second shielding member20a.

It should also be finally noted that, the foregoing embodiments are merely intended for describing the technical solutions of the present application rather than limiting the present application. According to the idea of the present application, technical features in the foregoing embodiments or different embodiments may also be combined, steps may be implemented in any sequence, and there may be many other variations of the present application in different aspects as described above. For brevity, the variations are not provided in detail. Although the present application is described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they may still make modifications to the technical solutions described in the foregoing embodiments or make equivalent replacements for some technical features in the technical solutions, and the essence of corresponding technical solutions does not depart from the scope of the technical solutions in the embodiments of the present application in spite of these modifications or replacements.