CN216600676U

CN216600676U - Shielding sheet

Info

Publication number: CN216600676U
Application number: CN202122615953.7U
Authority: CN
Inventors: 薛强; 薛冰健; 伍开军
Original assignee: Dongguan Orienson Hardware Electrical Co ltd
Current assignee: Dongguan Orienson Hardware Electrical Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-05-24
Anticipated expiration: 2031-10-28

Abstract

The utility model relates to a shielding sheet, which comprises a box-shaped shielding sheet body with a downward opening, wherein a shielding space is formed in the shielding sheet body in a hollow mode, the shielding sheet body comprises a rectangular shielding top plate which is used as the box-shaped top of the shielding sheet body, and shielding retaining walls which are integrally formed with the shielding top plate and extend outwards from four sides of the shielding top plate so as to be bent into box-shaped side edges of the shielding sheet body. The shielding sheet of the utility model forms the shielding space which can prevent the electromagnetic wave interference by surrounding the shielding top plate and the shielding retaining walls formed by bending the four sides, therefore, when the shielding sheet body is combined with the base, the electronic element is accommodated in the shielding space to prevent the electromagnetic wave interference, and the utility model has the efficacy of conveniently replacing and detecting the electronic element, reducing the manufacturing cost of the shielding structure and the like.

Description

Shielding sheet

Technical Field

The utility model belongs to the technical field of shielding devices, and particularly relates to a shielding sheet.

Background

Electronic devices, such as smart phones, tablet computers, and portable computers, are subject to Electromagnetic Interference (EMI) Interference, which affects the performance of the electronic devices. With the increasing operation speed of electronic devices, integrated circuits are becoming more dense, and the need for preventing electromagnetic interference is becoming higher and higher, and the intensity of electromagnetic noise radiated from electronic components in the electronic devices is increasing day by day, which not only interferes with other users in the frequency band, but also interferes with the radio frequency receiver of the electronic devices. Therefore, it is highly desirable to design a shielding plate to suppress the outward leakage of noise.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a shielding sheet, aiming at solving the technical problems that the intensity of electromagnetic noise radiated by an electronic element in the prior art is increased day by day, the electromagnetic noise not only interferes other users on the frequency band, but also more easily interferes a radio frequency receiver of the electronic element.

In order to achieve the above object, an embodiment of the present invention provides a shielding sheet for combining with a base provided with a printed circuit board, and the printed circuit board is provided with an electronic component; the shielding sheet comprises a box-shaped shielding sheet body with a downward opening, a shielding space is formed in the shielding sheet body in a hollow mode, and when the shielding sheet body is combined with the base, the electronic element is contained in the shielding space and is shielded by the shielding sheet body; the shielding sheet body comprises a rectangular shielding top plate serving as the box-shaped top of the shielding sheet body and a shielding retaining wall which is integrally formed with the shielding top plate and extends outwards from four sides of the shielding top plate to be bent into box-shaped side edges of the shielding sheet body.

Optionally, the shielding plate body is formed by bending a planar metal plate, and a peripheral fold line is formed between the shielding top plate and the shielding retaining wall.

Optionally, the periphery of the shielding plate body is connected with an anti-falling pin, the anti-falling pin extends from the shielding retaining wall at the opening of the shielding plate body to the side away from the shielding plate body, and the anti-falling pin is formed by bending the bottom of the shielding retaining wall correspondingly.

Optionally, the shielding top plate and each shielding retaining wall are vertically distributed, the adjacent shielding retaining walls are vertically distributed, and the anti-falling feet and the shielding retaining walls are vertically distributed.

Optionally, a plurality of first heat dissipation air channels are formed in the shielding top plate in a penetrating manner, a plurality of second heat dissipation air channels are formed in the shielding retaining walls in a penetrating manner, and the first heat dissipation air channels, the second heat dissipation air channels and the shielding space are communicated in a penetrating manner.

Optionally, the bending part where the shielding top plate and the corresponding shielding retaining wall meet is provided with a rib which is connected between the side edge of the shielding top plate and the top edge of the corresponding shielding retaining wall, so as to improve the bending strength of the bending part.

Optionally, the area surrounded by the four sides of the shielding retaining wall is greater than or equal to the area of the electronic element arranged on the printed circuit board, and the height of the shielding retaining wall is greater than the height of the electronic element arranged on the printed circuit board.

Optionally, the shielding top plate and each shielding wall are made of a metal material such as copper, aluminum or tin.

One or more technical solutions in the shielding sheet provided by the embodiment of the present invention have at least one of the following technical effects: the embodiment of the utility model provides a shielding sheet, which comprises a box-shaped shielding sheet body with a downward opening, wherein the shielding sheet body comprises a rectangular shielding top plate serving as the box-shaped top of the shielding sheet body, and a shielding retaining wall which is integrally formed with the shielding top plate and outwards extends from four edges of the shielding top plate to be bent into box-shaped side edges of the shielding sheet body; the shielding space which can prevent electromagnetic wave interference is formed by surrounding the shielding top plate and the shielding retaining walls formed by bending the four sides, so when the shielding sheet body is combined with the base, the electronic element is contained in the shielding space to prevent the electromagnetic wave interference, and the shielding sheet has the effects of conveniently replacing and detecting the electronic element, reducing the manufacturing cost of the shielding structure and the like.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective view of a shielding sheet according to an embodiment of the present invention under a first visual condition.

Fig. 2 is a perspective view of a shielding plate according to an embodiment of the present invention under a second visual angle.

Fig. 3 is a top view of a shielding plate according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

100. a shield sheet body; 110. Shielding the space; 120. A peripheral fold line;

200. a shielding top plate; 210. A first heat dissipation air duct; 300. Shielding the retaining wall;

310. a second heat dissipation air duct; 400. Anti-drop feet; 500. And (4) ribs.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, as shown in fig. 1 to 3, there is provided a shield sheet for being combined with a base provided with a printed circuit board provided with electronic components; the shielding sheet comprises a box-shaped shielding sheet body 100 with a downward opening, a shielding space 110 is formed in the shielding sheet body 100 in a hollow manner, so that when the shielding sheet body 100 is combined with the base, the electronic component is accommodated in the shielding space 110 and is shielded by the shielding sheet body 100; the shielding sheet body 100 includes a shielding top plate 200 as a box-shaped top of the shielding sheet body 100 and having a rectangular shape, and shielding walls 300 integrally formed with the shielding top plate 200 and extending outward from four sides of the shielding top plate 200 to be bent into box-shaped sides of the shielding sheet body 100. Specifically, the embodiment of the present invention provides a shielding sheet, wherein the shielding space 110 capable of preventing electromagnetic wave interference is formed by surrounding the shielding top plate 200 and the shielding barriers 300 formed by bending four sides, so that when the shielding sheet body 100 is combined with the base, the electronic component is accommodated in the shielding space 110 to prevent electromagnetic wave interference, and the shielding sheet has the effects of facilitating replacement and detection of the electronic component, reducing the manufacturing cost of the shielding structure, and the like.

In another embodiment of the present invention, as shown in fig. 1 to 3, the shielding sheet body 100 is formed by bending a planar metal plate, and the shielding sheet body 100 forms a peripheral fold line 120 between the shielding top plate 200 and the shielding retaining wall 300. The shielding sheet body 100 forms the shielding top plate 200, the shielding walls 300 and the shielding space 110 along each bending included angle θ of the peripheral folding line 120, so that when the shielding sheet body 100 is combined with the base, the electronic component is accommodated in the shielding space 110, and the shielding top plate 200 and the shielding walls 300 on the four sides cover the electronic component on the printed circuit board, thereby achieving the effect of electromagnetic wave shielding.

In another embodiment of the present invention, as shown in fig. 1 to 3, an anti-falling pin 400 is connected to an outer periphery of the shielding plate body 100, the anti-falling pin 400 extends from the shielding wall 300 at the opening of the shielding plate body 100 to a side away from the shielding plate body 100, and the anti-falling pin 400 is formed by bending a bottom of the corresponding shielding wall 300. According to the utility model, the shielding sheet body 10 which is integrally formed is arranged on the base to form shielding for electronic elements on the printed circuit board, and the fastening installation is realized by the matching of the anti-falling pins 400 on the periphery of the shielding sheet body 100 and the base, so that the stability of the installation of the shielding sheet is improved, the structure is simple, and the cost is low.

In another embodiment of the present invention, as shown in fig. 1 to 3, the shielding top plate 200 and each shielding wall 300 are vertically distributed, the adjacent shielding walls 300 are vertically distributed, and the anti-slip pins 400 and the shielding walls 300 are vertically distributed.

In another embodiment of the present invention, as shown in fig. 1-2, a plurality of first heat dissipation air channels 210 are formed through the shielding top plate 200, a plurality of second heat dissipation air channels 310 are formed through each shielding wall 300, and the first heat dissipation air channels 210, the second heat dissipation air channels 310 and the shielding space 110 are communicated through each other. Specifically, the first heat dissipation air duct 210 and the second heat dissipation air duct 310 are arranged to accelerate the dissipation of heat of the electronic component accommodated in the shielding space 110, avoid the influence of heat accumulation on the operation of the electronic component, and prolong the service life of the electronic component, and meanwhile, the first heat dissipation air duct 210, the second heat dissipation air duct 310 and the shielding space 110 are communicated to perform circulation heat dissipation, thereby improving the heat dissipation efficiency.

In another embodiment of the present invention, as shown in fig. 2, a rib 500 is disposed at a bending portion where the shielding top plate 200 meets the corresponding shielding wall 300, and the rib is connected between a side edge of the shielding top plate 200 and a top edge of the corresponding shielding wall 300, so as to improve the bending strength of the bending portion. Specifically, the rigidity of the shielding wall 300 near the shielding top plate 200 can be increased by using the ribs 500, that is, the shielding wall 300 can be equivalently divided into two parts, the rigidity near the shielding top plate 200 is higher, and the rigidity near the opening of the shielding sheet body 100 is lower, so that the electronic components on the printed circuit board can be conveniently loaded by using the characteristic that the flexibility of the shielding wall 300 near the opening of the shielding sheet body 100 is high; and the characteristic that the rigidity of the shielding retaining wall 300 close to the shielding top plate 200 is high is fully utilized, large rebound force is realized by small interference fit, and the shielding piece body 100 and the base are ensured to be kept in a flat state as much as possible.

In another embodiment of the present invention, the area surrounded by the four shielding walls 300 is greater than or equal to the area where the electronic components are disposed on the printed circuit board, and the height of the shielding walls 300 is greater than the height of the electronic components disposed on the printed circuit board, so as to facilitate the mounting of the electronic components on the printed circuit board, and improve the mounting convenience of the shielding plate of the present invention.

In another embodiment of the present invention, the shielding top plate 200 and each of the shielding walls 300 are made of a metal material such as copper, aluminum or tin, for example, copper foil, aluminum foil or tin foil, so as to enable electromagnetic waves to be transmitted along the surfaces of the shielding top plate 200 and each of the shielding walls 300.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A shielding sheet is used for combining with a base provided with a printed circuit board, and the printed circuit board is provided with an electronic component; the method is characterized in that: the shielding sheet comprises a box-shaped shielding sheet body with a downward opening, a shielding space is formed in the shielding sheet body in a hollow mode, and when the shielding sheet body is combined with the base, the electronic element is contained in the shielding space and is shielded by the shielding sheet body; the shielding sheet body comprises a rectangular shielding top plate serving as the box-shaped top of the shielding sheet body and a shielding retaining wall which is integrally formed with the shielding top plate and extends outwards from four sides of the shielding top plate to be bent into box-shaped side edges of the shielding sheet body.

2. The shield sheet according to claim 1, characterized in that: the shielding piece body is formed by bending a planar metal plate, and the shielding piece body is formed with a peripheral broken line between the shielding top plate and the shielding retaining wall.

3. The shield sheet according to claim 1, characterized in that: the periphery of shielding piece body is connected with the anticreep foot, the anticreep foot certainly the shielding barricade of shielding piece body opening part is to keeping away from one side of shielding piece body extends, the anticreep foot is by corresponding the bottom bending type of shielding barricade forms.

4. The shield sheet according to claim 3, characterized in that: the shielding top plate and each shielding retaining wall are vertically distributed, the adjacent shielding retaining walls are vertically distributed, and the anti-falling feet and the shielding retaining walls are vertically distributed.

5. The shield sheet according to claim 1, characterized in that: a plurality of first heat dissipation air channels are formed in the shielding top plate in a penetrating mode, a plurality of second heat dissipation air channels are formed in the shielding retaining walls in a penetrating mode, and the first heat dissipation air channels, the second heat dissipation air channels and the shielding space are communicated in a penetrating mode.

6. The shield sheet according to any one of claims 1 to 5, wherein: shielding roof and corresponding the department of buckling that meets between the shielding barricade is provided with the handing-over and is in the side reason of shielding roof and corresponding rib between the top edge of shielding barricade to improve the intensity of buckling of department of buckling.

7. The shield sheet according to any one of claims 1 to 5, wherein: the area that the four sides shielding barricade was surrounded is more than or equal to electronic component sets up region on the printed circuit board, just the height of shielding barricade is greater than electronic component sets up in height on the printed circuit board.

8. The shield sheet according to any one of claims 1 to 5, characterized in that: the shielding top plate and each shielding retaining wall are made of copper, aluminum or tin metal.