CN111954451A - Board level shielding cover - Google Patents
Board level shielding cover Download PDFInfo
- Publication number
- CN111954451A CN111954451A CN201910406193.3A CN201910406193A CN111954451A CN 111954451 A CN111954451 A CN 111954451A CN 201910406193 A CN201910406193 A CN 201910406193A CN 111954451 A CN111954451 A CN 111954451A
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- Prior art keywords
- wall portion
- wall
- frame
- plate
- board
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
- H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
- H05K9/0032—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields having multiple parts, e.g. frames mating with lids
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The embodiment of the application provides a board level shield cover, includes: a frame including a wall portion extending in a first direction and continuous in a circumferential direction, a support portion extending from one end of the wall portion in a second direction perpendicular to the first direction, and a connecting portion connecting the wall portion and the support portion; and a cover body which can cover the frame on one side of the supporting part and can perform electromagnetic shielding on one or more elements on the circuit board together with the frame; wherein, at least one part of the connecting part is provided with a zipper leading-in structure with a certain radian. Therefore, the cover body can be easily introduced to the frame, so that the frame and the cover body can be easily combined, the rigidity between the frame and the cover body can be increased, the installation is firm, and the gap between the frame and the cover body is small, so that the shielding effect can be ensured.
Description
Technical Field
The embodiment of the application relates to the technical field of electromagnetic shielding, in particular to a Board Level Shield (BLS, Board Level Shield).
Background
In normal operation, electronic/electrical components in the device typically generate undesirable electromagnetic waves that interfere with the operation of adjacent electronic/electrical components. To eliminate or mitigate the negative effects caused by Electromagnetic Interference (EMI), board level shields may be used to provide EMI shielding for the electronic/electrical components.
Currently, a common board-level shield has a two-part structure, where a cover can be mounted to a frame; another common board-level shield has a one-piece construction, i.e., the board-level shield is constructed from one piece. The conventional Board-level shield case is mainly fixed on a Printed Circuit Board (PCB) by Surface Mount Technology (SMT).
In the case of a one-piece structure, after the board-level shield is soldered to the PCB, if it is necessary to repair an electronic device (for example, an IC component) surrounded by the board-level shield, the board-level shield must be soldered, which is particularly likely to damage the electronic device surrounded by the board-level shield, and the repair is also very inconvenient.
For the two-part structure, since the frame is welded to the PCB and the cover is mounted to the frame, the mounting structure between the cover and the frame needs to be relatively firm to prevent the cover from accidentally falling off the frame. In addition, the gap between the cover and the frame is required to be relatively small to ensure the electromagnetic interference shielding effect.
It should be noted that the above background description is provided only for the sake of clarity and complete description of the technical solutions of the present application, and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.
Disclosure of Invention
The inventor finds that: in the plate-level shielding cover with the existing two-part structure, a frame has a relatively sharp edge; therefore, the frame and the cover body are not easy to combine, the rigidity between the frame and the cover body is small, the installation is not easy to be firm, and the gap between the frame and the cover body is large, so that the shielding effect is influenced.
In order to solve at least one of the above problems, embodiments of the present application provide a board level shielding case.
According to a first aspect of embodiments of the present application, there is provided a board level shield, including:
a frame including a wall portion extending in a first direction and continuous in a circumferential direction, a support portion extending from one end of the wall portion in a second direction perpendicular to the first direction, and a connecting portion connecting the wall portion and the support portion; and
a cover which can cover the frame on one side of the supporting part and can electromagnetically shield one or more elements on the circuit board together with the frame;
wherein, at least one part of the connecting part is provided with a zipper leading-in structure with a certain radian.
According to a second aspect of embodiments herein, wherein the zipper introduction structure comprises:
a first tooth portion connected to the wall portion and including a plurality of first teeth curved from the wall portion to the support portion by the certain arc;
a second tooth portion connected to the support portion and including a plurality of second teeth curved from the support portion to the wall portion by the certain arc;
wherein the plurality of first teeth and the plurality of second teeth are staggered to form the zipper pull in structure.
According to a third aspect of embodiments of the present application, wherein the connecting portion includes a plurality of the zipper introduction structures.
According to a fourth aspect of embodiments herein, wherein the wall portion comprises at least: the plate-shaped member includes a first plate-shaped portion and a second plate-shaped portion parallel to each other, and a third plate-shaped portion connected to one end of the first plate-shaped portion and one end of the second plate-shaped portion, respectively.
According to a fifth aspect of embodiments of the present application, wherein the third plate-like portion includes: a first wall portion connected to the first plate-like portion and a second wall portion connected to the second plate-like portion; and the cambered zipper leading-in structure is arranged between the first wall part and the supporting part, and the cambered zipper leading-in structure is arranged between the second wall part and the supporting part.
According to a sixth aspect of the embodiments of the present application, a protruding portion protruding from the frame is provided between the first wall portion and the second wall portion, and the protruding portion includes a third wall portion, a fourth wall portion, and a fifth wall portion respectively connected to the support portion.
According to a seventh aspect of the embodiments of the present application, wherein the third wall portion has an angle with the first wall portion, the fifth wall portion has an angle with the second wall portion, and the fourth wall portion is parallel to the first wall portion and the second wall portion.
According to an eighth aspect of the embodiments of the present application, wherein a zipper structure having a certain curvature is provided between the third wall portion and the fourth wall portion; and a zipper structure with a certain radian is arranged between the fourth wall part and the fifth wall part.
According to a ninth aspect of the embodiments of the present application, wherein the first plate-like portion, the second plate-like portion, the first wall portion, the second wall portion, the third wall portion, the fourth wall portion, and the fifth wall portion are capable of being in one plane with the support portion by bending.
According to a tenth aspect of the embodiments of the present application, wherein the cover body includes a main body portion extending in the second direction, and a fixing portion connecting the main body portion and extending in the first direction; the zipper introduction structure of the connecting part can guide the fixing part.
Through the embodiment of the application, at least one part of the connecting part between the wall part and the supporting part in the frame is provided with a zipper leading-in structure with a certain radian; therefore, the cover body can be easily introduced to the frame, so that the frame and the cover body can be easily combined, the rigidity between the frame and the cover body can be increased, the installation is firm, and the gap between the frame and the cover body is small, so that the shielding effect can be ensured.
Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a board level shield according to an embodiment of the present application;
FIG. 2 is a schematic view of a frame in the board level shield of FIG. 1;
FIG. 3 is an enlarged schematic view of the zipper pull-in structure of FIG. 1;
FIG. 4 is a schematic view of a board level shield according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a prior art board level shield;
fig. 6 is a schematic view of the board level shield of fig. 1 deployed to a flat plane.
Detailed Description
The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the described embodiments, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.
In the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing different elements by reference, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.
In the embodiments of the present application, the singular forms "a", "an", and the like may include the plural forms and should be interpreted broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.
In the following description of the present application, for the sake of convenience of description, a direction parallel to a direction extending along an axis is referred to as an "axial direction", a radial direction centering on the axis is referred to as a "radial direction", and a direction radially outward of a surrounding device or equipment centering on the axis is referred to as a "circumferential direction". It will be appreciated that these are for convenience of illustration only and do not limit the orientation of the device or apparatus in use or manufacture.
In the following description of the present application, for convenience of description, a side close to a circuit board (e.g., PCB) is referred to as "lower side" or "lower side", and a side far from the circuit board is referred to as "upper side" or "upper side". A direction perpendicular to the circuit board is referred to as a "first direction" or a "up-down direction" (indicated by a Y direction or a negative Y direction in the drawing), and a direction parallel to the circuit board is referred to as a "second direction" or a "horizontal direction" (indicated by an X direction or a negative X direction in the drawing). It should be noted that these are for illustrative convenience only and do not limit the orientation of the board level shield during use and manufacture.
Embodiments of the present application will be described below with reference to the drawings.
The embodiment of the application provides a Board Level shielding cover (BLS). Fig. 1 is a schematic diagram of a board-level shield according to an embodiment of the present application, which shows a part of components of a board-level shield 100 viewed from the side. Fig. 2 is a schematic view of the frame in the board level shield of fig. 1, showing parts removed with the cover.
As shown in fig. 1 and 2, the board-level shield 100 includes:
a frame 101 including a wall portion 1011 extending in a first direction and continuing in a circumferential direction, a support portion 1012 extending from one end 1011a of the wall portion 1011 in a second direction perpendicular to the first direction, and a connecting portion 1013 connecting the wall portion 1011 and the support portion 1012; and
the cover 102, which can cover the frame 101 on one side of the supporting portion 1012, can electromagnetically shield one or more components on the circuit board together with the frame 101.
As shown in fig. 1 and 2, at least a portion of the connecting portion 1013 has a zipper lead-in (zipper lead-in) structure 1013A having a curvature. Fig. 3 is an enlarged schematic view of the zipper introduction structure 1013A of fig. 1, and as shown in fig. 3, the zipper introduction structure 1013A includes:
a first tooth 201 connected to the wall 1011 and including a plurality of first teeth 2011 curved from the wall 1011 to the support 1012 by a predetermined arc;
a second tooth portion 202 connected to the support portion 1012 and including a plurality of second teeth 2021 curved from the support portion 1012 to the wall portion 1011 by a predetermined arc;
wherein the plurality of first teeth 2011 and the plurality of second teeth 2021 are staggered to form the zipper pull-in structure 1013A. For example, as shown in fig. 3, the first tooth portion 201 has 4 first teeth 2011, and the second tooth portion 202 also has 4 second teeth 2021; the first teeth 2011 are wavy, and the second teeth 2021 are also wavy. The present application is not so limited and the specific number and shape of the teeth may be determined as desired.
Fig. 4 is a schematic diagram of the board-level shield according to the embodiment of the present application, and shows a part of the assembled components of the frame 101 and the cover 102 as viewed in the X direction. Fig. 5 is a schematic view of a conventional board-level shield, showing a part of the assembled frame and cover as viewed in the X direction.
As shown in fig. 4 and 5, the edge of the frame 101 in the board level shield of the embodiment of the present application has a certain curvature 301 compared to the existing board level shield having a sharp edge 302, and thus, the cover can be easily introduced onto the frame, and thus the frame and the cover can be easily combined.
In addition, as shown in fig. 4 and 5, by the zipper leading structure 1013A with a certain arc 301 according to the embodiment of the present application, the cover 102 in the board level shielding case can be closer to the frame 101, which not only can increase the rigidity between the frame and the cover to ensure firm installation, but also can ensure the shielding effect because the gap between the frame and the cover is small.
In the present embodiment, the connection part 1013 may include a plurality of zipper introduction structures. For example, as shown in fig. 1, two zipper lead-in structures 1013A and 1013B may be included. However, the embodiment of the present application is not limited thereto, and for example, a greater number of zipper introduction structures may be included.
Thereby, the cover can be further easily introduced to the frame by the plurality of zipper introduction structures, and the frame and the cover can be further easily combined.
As shown in fig. 2, the wall 1011 may include at least: a first plate-shaped portion 401 and a second plate-shaped portion 402 which are parallel to each other, and a third plate-shaped portion 403 to which one end of the first plate-shaped portion 401 and one end of the second plate-shaped portion 402 are connected, respectively.
Thus, the wall portion has a substantially rectangular enclosure frame, and one or more elements of the circuit board can be further easily electromagnetically shielded.
As shown in fig. 2, the third plate 403 may include: a first wall portion 501 connected to the first plate-like portion 401 and a second wall portion 502 connected to the second plate-like portion 402; and a zipper introduction structure 1013A having a certain curvature is provided between the first wall portion 501 and the support portion 1012, and a zipper introduction structure 1013B having a certain curvature is provided between the second wall portion 502 and the support portion 1012.
Thereby, the zipper introducing structure can be easily formed, and the board-level shield can be easily mounted on the circuit board.
As shown in fig. 2, the first wall portion 501 and the second wall portion 502 may have a convex portion 601 protruding from the frame 101 therebetween, and the convex portion 601 includes a third wall portion 503, a fourth wall portion 504, and a fifth wall portion 505 connected to a support portion 1012, respectively.
As shown in fig. 2, the third wall part 503 may have an angle with the first wall part 501, the fifth wall part 505 may have an angle with the second wall part 502, and the fourth wall part 504 is parallel to the first wall part 501 and the second wall part 502.
Thereby, the cover can be further easily introduced onto the frame by the convex portion 601, so that the frame and the cover are further easily combined.
As shown in fig. 2, a zipper structure 1011A with a certain arc may be further provided between the third wall part 503 and the fourth wall part 504; the fourth wall portion 504 and the fifth wall portion 505 may also have a zipper structure 1011B therebetween.
Thereby, the frame 101 can be easily formed by using the zipper structure, and the board-level shield can be easily mounted on the circuit board.
In the present embodiment, the first plate-like portion 401, the second plate-like portion 402, the first wall portion 501, the second wall portion 502, the third wall portion 503, the fourth wall portion 504, and the fifth wall portion 505 can be formed to be flush with the support portion 1012 by bending.
Fig. 6 is a schematic diagram of the board-level shield of fig. 1 being unfolded to a plane, and as shown in fig. 6, the first plate-like portion 401, the second plate-like portion 402, the first wall portion 501, the second wall portion 502, the third wall portion 503, the fourth wall portion 504, and the fifth wall portion 505 can be unfolded by bending and are in a plane (i.e., XZ plane shown in fig. 1) with the support portion 1012.
Thus, the board-level shield can be easily handled, stored, and transported, and can be easily mounted on a circuit board.
As shown in fig. 1, the cover 102 may include a main body portion 1021 extending along the second direction, and a fixing portion 1022 connected to the main body portion 1021 and extending along the first direction; the fastener introducing structure 1013A and/or 1013B of the connecting part 1013 can guide the fixing part 1022.
Thereby, the cover can be further easily introduced onto the frame, so that the frame and the cover are further easily combined.
It should be noted that fig. 1 to 6 only schematically illustrate the board-level shield of the present application, but the present application is not limited thereto; for example, the board-level shield may have other structures or components, and reference may be made to the related art, and the description thereof is omitted here. In addition, components or elements not specifically indicated in fig. 1 to 6 may refer to related art, and the present application does not limit this.
In addition, the above is only an exemplary explanation of each structure or component, but the present application is not limited thereto, and the specific content of each structure or component may also refer to the related art; further, structures or components not shown in fig. 1 to 6 may be added, or one or more structures or components in fig. 1 to 6 may be reduced.
The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various modifications and adaptations of the present application may occur to those skilled in the art based on the spirit and principles of the application and are within the scope of the application.
Preferred embodiments of the present application are described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments that fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the present application to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.
Claims (10)
1. A board level shield, comprising:
a frame including a wall portion extending in a first direction and continuous in a circumferential direction, a support portion extending from one end of the wall portion in a second direction perpendicular to the first direction, and a connecting portion connecting the wall portion and the support portion; and
a cover which can cover the frame on one side of the supporting part and can electromagnetically shield one or more elements on the circuit board together with the frame;
wherein, at least one part of the connecting part is provided with a zipper leading-in structure with a certain radian.
2. The board level shield of claim 1, wherein the zipper pull-in structure comprises:
a first tooth portion connected to the wall portion and including a plurality of first teeth curved from the wall portion to the support portion by the certain arc;
a second tooth portion connected to the support portion and including a plurality of second teeth curved from the support portion to the wall portion by the certain arc;
wherein the plurality of first teeth and the plurality of second teeth are staggered to form the zipper pull in structure.
3. The board level shield of claim 1, wherein the connection portion comprises a plurality of the zipper pull-in structures.
4. The board level shield of claim 1, wherein the wall portion comprises at least: the plate-shaped member includes a first plate-shaped portion and a second plate-shaped portion parallel to each other, and a third plate-shaped portion connected to one end of the first plate-shaped portion and one end of the second plate-shaped portion, respectively.
5. The board level shield of claim 4, wherein the third plate-like portion comprises: a first wall portion connected to the first plate-like portion and a second wall portion connected to the second plate-like portion; and the cambered zipper leading-in structure is arranged between the first wall part and the supporting part, and the cambered zipper leading-in structure is arranged between the second wall part and the supporting part.
6. The board-level shield according to claim 5, wherein the first wall portion and the second wall portion have therebetween a protruding portion protruding from the frame, the protruding portion including a third wall portion, a fourth wall portion, and a fifth wall portion connected to the support portion, respectively.
7. The board level shield of claim 6, wherein the third wall portion is angled from the first wall portion, the fifth wall portion is angled from the second wall portion, and the fourth wall portion is parallel to the first wall portion and the second wall portion.
8. The board level shield of claim 6, wherein the third wall portion and the fourth wall portion have a zipper structure therebetween having an arc; and a zipper structure with a certain radian is arranged between the fourth wall part and the fifth wall part.
9. The board-level shield of claim 6, wherein the first plate-like portion, the second plate-like portion, the first wall portion, the second wall portion, the third wall portion, the fourth wall portion, and the fifth wall portion are configured to be in a plane with the support portion by bending.
10. The board-level shield case according to any one of claims 1 to 9, wherein the cover body includes a main body portion extending in the second direction, and a fixing portion connecting the main body portion and extending in the first direction; the zipper introduction structure of the connecting part can guide the fixing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406193.3A CN111954451B (en) | 2019-05-16 | 2019-05-16 | Board-level shielding cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910406193.3A CN111954451B (en) | 2019-05-16 | 2019-05-16 | Board-level shielding cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111954451A true CN111954451A (en) | 2020-11-17 |
| CN111954451B CN111954451B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910406193.3A Active CN111954451B (en) | 2019-05-16 | 2019-05-16 | Board-level shielding cover |
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| CN (1) | CN111954451B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111954451B (en) | 2023-09-19 |
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