CN210274667U

CN210274667U - PCB board with shielding structure

Info

Publication number: CN210274667U
Application number: CN201920694216.0U
Authority: CN
Inventors: 卢海航; 柯木真; 徐巧丹
Original assignee: Baiqiang Electronics Shenzhen Co ltd
Current assignee: Baiqiang Electronics Shenzhen Co ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-04-07
Anticipated expiration: 2029-05-13

Abstract

The utility model discloses a PCB board with shielding structure, this PCB board includes: the PCB is provided with a groove matched with the shape of the cover opening of the shielding cover, the inner wall of the groove is coated with copper foil, and the width of the groove is smaller than the thickness of the shielding cover; the shielding cover covers the PCB, and a cover opening of the shielding cover is arranged in the groove. Because the width of the groove is slightly smaller than the thickness of the shield wall of the shield cover, the shield cover can be tightly inserted into the groove, the gap between the shield cover and the groove is reduced, and the electromagnetic wave leakage is prevented. In addition, in order to further prevent the leakage of the electromagnetic wave, a copper foil is coated inside the groove, and the electromagnetic wave is shielded by a metal.

Description

PCB board with shielding structure

Technical Field

The utility model relates to a PCB board technical field, in particular to PCB board with shielding structure.

Background

The electronic equipment inevitably has electromagnetic wave interference, thereby influencing the normal operation of the equipment. Meanwhile, the electronic equipment itself also radiates electromagnetic waves to the outside, which causes electromagnetic radiation security threat to users.

It is a current technical solution to adopt a shielding case to isolate or shield components of various functional modules on a PCB (Printed Circuit Board). There are also various ways of implementing the assembly of the shielding can and the shielding device with the PCB. The existing better technical scheme is that a shielding frame and a shielding cover are matched, the shielding frame is welded on a PCB board through a Surface Mount Technology (SMT), and the shielding cover is buckled on the shielding frame. The installation mode is not convenient enough when the maintenance is disassembled, and meanwhile, specific shielding frames and shielding covers are required to be manufactured according to different shielding circuit appearances, so that the reuse rate is low. In addition, the shielding cover formed by one-time stamping molding is lack of consideration during manufacturing, large gaps are formed at the joint of some folded edges, and the electromagnetic radiation leakage defect exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a PCB board with shielding structure with shielding electromagnetic interference can prevent that the electromagnetic radiation who leads to because shield cover and PCB board junction gap are great from revealing the condition emergence.

In order to achieve the above object, the utility model provides a PCB board with shielding structure, this shielding device includes: the PCB is provided with a groove matched with the shape of the cover opening of the shielding cover, the inner wall of the groove is coated with copper foil, and the width of the groove is smaller than the thickness of the shielding cover; the shielding cover covers the PCB, and a cover opening of the shielding cover is arranged in the groove.

Preferably, the width of the groove is gradually reduced from the notch to the groove bottom.

Preferably, the groove is formed by the surface of the PCB in a concave manner.

Preferably, the shielding case is arranged in a trumpet shape.

The utility model provides a PCB board, its shield cover is by the metal integrated into one piece that has the electromagnetic wave shielding function. The shielding case is matched with the shape of the circuit board. When the PCB is installed, the cover opening of the shielding cover covers the PCB. The shield can is then securely fixed to the PCB board by the snap fit result. In order to avoid electromagnetic wave leakage caused by a gap generated when the shielding case is combined with the PCB, in this embodiment, the PCB is provided with a groove, and the opening of the shielding case is inserted into the groove. Because the width of the groove is slightly smaller than the thickness of the shield wall of the shield cover, the shield cover can be tightly inserted into the groove, the gap between the shield cover and the groove is reduced, and the electromagnetic wave leakage is prevented. In addition, in order to further prevent the leakage of the electromagnetic wave, a copper foil is coated inside the groove, and the electromagnetic wave is shielded by a metal.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a structural diagram of a PCB board with a shielding structure provided by the present invention;

fig. 2 is an enlarged view of a point a in fig. 1.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

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 efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.

The utility model provides a PCB board with shielding structure.

This PCB board includes: the PCB shielding structure comprises a shielding cover 1 made of metal materials and a buckling structure 2 for detachably connecting the shielding cover 1 with a PCB. The PCB board is provided with a groove 3 matched with the shape of the cover opening of the shielding cover 1, the inner wall of the groove 3 is coated with copper foil (not shown in the figure), and the width of the groove 3 is smaller than the thickness of the shielding cover 1. The shielding case 1 covers the PCB, and the opening of the shielding case 1 is arranged in the groove 3.

The shield case 1 is integrally formed of metal having a function of shielding electromagnetic waves. The shield case 1 is adapted to the shape of the circuit board. When the PCB is installed, the cover opening of the shielding cover 1 covers the PCB. Then, the shield can 1 is firmly fixed on the PCB board by the snap structure 2. In order to avoid electromagnetic wave leakage caused by a gap when the shielding case 1 is combined with the PCB, in this embodiment, the groove 3 is formed in the PCB, and the opening of the shielding case 1 is inserted into the groove 3. Because the width of the groove 3 is slightly smaller than the thickness of the shield wall of the shield cover 1, the shield cover 1 can be tightly inserted into the groove 3, the gap between the shield cover 1 and the groove 3 is reduced, and the electromagnetic wave leakage is prevented. In addition, in order to further prevent the leakage of electromagnetic waves, a copper foil is coated inside the groove 3, and the electromagnetic waves are shielded by metal.

In order to strengthen the combination degree of the groove 3 and the shielding case 1, the gap between the shielding case 1 and the groove 3 is reduced, and further, the width of the groove 3 is gradually reduced from the notch to the groove bottom, so that the cross section of the groove 3 is in a trapezoidal shape with a large opening part and a small bottom part. The arrangement of the shape is more convenient for the shielding cover 1 to be inserted into the groove 3, and the shielding cover 1 is more inserted into the bottom of the groove 3, the tightness between the shielding cover 1 and the groove is stronger, and the electromagnetic wave leakage is further prevented.

The groove 3 can be formed by arranging the groove 3 on the surface of the PCB or by arranging the surface of the PCB in a concave way. In order to make the PCB board structure simple, it is preferable that the groove 3 is formed by recessing the surface of the PCB board.

In order to enhance the anti-seismic effect of the PCB panel shielding structure, the shielding can 1 is preferably arranged in a trumpet shape. The horn mouth shape sets up, has certain elasticity to the holistic antidetonation effect of shielding structure has been promoted.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A PCB board having a shield structure, comprising: the PCB is provided with a groove matched with the shape of the cover opening of the shielding cover, the inner wall of the groove is coated with copper foil, and the width of the groove is smaller than the thickness of the shielding cover; the shielding cover covers the PCB, and a cover opening of the shielding cover is arranged in the groove.

2. The PCB board having a shield structure according to claim 1, wherein the width of the groove is gradually decreased from the notch to the bottom of the groove.

3. The PCB with the shielding structure as claimed in claim 1 or 2, wherein the groove is formed by recessing the surface of the PCB.

4. The PCB board with the shielding structure as claimed in claim 1 or 2, wherein the shielding case is in a trumpet shape.