CN111954451B - Board-level shielding cover - Google Patents
Board-level shielding cover Download PDFInfo
- Publication number
- CN111954451B CN111954451B CN201910406193.3A CN201910406193A CN111954451B CN 111954451 B CN111954451 B CN 111954451B CN 201910406193 A CN201910406193 A CN 201910406193A CN 111954451 B CN111954451 B CN 111954451B
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- Prior art keywords
- wall portion
- board
- wall
- frame
- level shield
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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 shielding case, which comprises: 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 connection portion connecting the wall portion and the support portion; and a cover body capable of covering the frame on one side of the supporting part, and capable of electromagnetically shielding one or more elements on the circuit board together with the frame; wherein, at least a part of the connecting part is provided with a zipper introducing structure with a certain radian. Thus, the cover body can be easily introduced to the frame, so that the frame and the cover body can be easily combined, not only can the rigidity between the frame and the cover body be increased and the installation is firm, but also the gap between the frame and the cover body is small and 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 shielding case (BLS, board Level Shield).
Background
In normal operation, electronic/electrical components in the device typically generate undesirable electromagnetic forces that interfere with the operation of adjacent electronic/electrical components. To eliminate or mitigate the negative effects caused by electromagnetic interference (EMI, electromagnetic Interference), board-level shields may be used to provide electromagnetic interference shielding for electronic/electrical components.
Currently, a common board-level shield has a two-part structure that can mount a cover to a frame; another common board level shield has a one-piece construction, i.e. the board level shield is made of one piece. Conventional board-level shields are primarily secured to the printed circuit board (PCB, printed Circuit Board) by surface mount technology (SMT, surface Mount Technology).
For a one-piece construction, after soldering the board-level shield can to the PCB, if repair of the electronic component (e.g., IC part, etc.) enclosed by the board-level shield can is required, the board-level shield can must be soldered down, which is particularly prone to damage to the electronic component enclosed by the board-level shield can, and the repair is also very inconvenient.
For the two-part structure, since the frame is soldered to the PCB and the cover is mounted to the frame, the mounting structure between the cover and the frame needs to be relatively strong to avoid accidental removal of the cover from the frame. In addition, the gap between the cover body and the frame is required to be smaller so as to ensure the electromagnetic interference shielding effect.
It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present application and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the application section.
Disclosure of Invention
The inventors found that: in the prior board-level shielding case with a two-part structure, the frame has a relatively sharp edge; therefore, the frame and the cover body are not easy to be combined, 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, an embodiment of the present application provides a board-level shield.
According to a first aspect of an embodiment of the present application, there is provided 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 connection portion connecting the wall portion and the support portion; and
a cover body capable of covering the frame on one side of the support portion, and capable of electromagnetically shielding one or more elements on a circuit board together with the frame;
wherein, at least a part of the connecting part is provided with a zipper introducing structure with a certain radian.
According to a second aspect of an embodiment of the present application, the slide fastener introducing structure includes:
a first tooth portion that connects the wall portion and includes a plurality of first teeth that curve the certain arc from the wall portion to the support portion;
a second tooth portion that connects the support portion and includes a plurality of second teeth that curve the certain arc from the support portion toward the wall portion;
wherein the first plurality of teeth and the second plurality of teeth are staggered to form the zipper introduction structure.
According to a third aspect of embodiments of the present application, the connecting portion includes a plurality of the slide fastener introducing structures.
According to a fourth aspect of embodiments of the present application, the wall portion includes at least: a first plate-shaped part and a second plate-shaped part which are parallel to each other, and a third plate-shaped part which is respectively connected with one end of the first plate-shaped part and one end of the second plate-shaped part.
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; the first wall part and the supporting part are provided with the zipper introducing structure with a certain radian, and the second wall part and the supporting part are provided with the zipper introducing structure with a certain radian.
According to a sixth aspect of embodiments of the present application, there is a protruding portion protruding from the frame between the first wall portion and the second wall portion, the protruding portion including a third wall portion, a fourth wall portion, and a fifth wall portion connected to the supporting portion, respectively.
According to a seventh aspect of the embodiments of the present application, the third wall portion and the first wall portion have an angle therebetween, the fifth wall portion and the second wall portion have an angle therebetween, and the fourth wall portion is parallel to the first wall portion and the second wall portion.
According to an eighth aspect of the embodiment of the present application, a zipper structure with a certain radian is arranged between the third wall part and the fourth wall part; 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 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 can be in a plane with the support portion by bending.
According to a tenth aspect of embodiments of the present application, the cover 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 slide fastener introduction structure of the connecting portion is capable of guiding the fixing portion.
According to 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 introducing structure with a certain radian; thus, the cover body can be easily introduced to the frame, so that the frame and the cover body can be easily combined, not only can the rigidity between the frame and the cover body be increased and the installation is firm, but also the gap between the frame and the cover body is small and the shielding effect can be ensured.
Specific embodiments of the application are disclosed in detail below 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 application are not limited in scope thereby. 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 embodiments of the application and 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 evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art. 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 the 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 illustration of a prior art board level shield;
fig. 6 is a schematic view of the board level shield of fig. 1 deployed to a plane.
Detailed Description
The foregoing and other features of the application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the specification and drawings, there have been specifically disclosed specific embodiments of the application that are indicative of some of the ways in which the principles of the application may be employed, it being understood that the application is not limited to the specific embodiments described, but, on the contrary, the application includes 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 to distinguish between different elements from each other by name, but do not indicate spatial arrangement or time sequence 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 "comprises," "comprising," "including," "having," and the like, are intended to reference the presence of stated features, elements, components, or groups of components, but do not preclude the presence or addition of one or more other features, elements, components, or groups of components.
In embodiments of the application, the singular forms "a," an, "and" the "may include plural forms and should be construed broadly as" one "or" one type "and not as limited to the meaning of" one; furthermore, the term "comprising" is to be interpreted as including both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, 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 indicates otherwise.
In the following description of the present application, for convenience of description, a direction parallel to a direction along which the shaft extends is referred to as an "axial direction", a radial direction centered on the shaft is referred to as a "radial direction", and a direction radially outside the enclosure or the apparatus centered on the shaft is referred to as a "circumferential direction". It is noted that these are for convenience of illustration only and are not limiting of the orientation of the apparatus or device in use and 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". The direction perpendicular to the circuit board is referred to as a "first direction" or an "up-down direction" (indicated by a Y direction or a negative Y direction in the drawing), and the 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 convenience of illustration only and are not limiting on the orientation of the board-level shield in use and manufacture.
Embodiments of the present application will be described below with reference to the accompanying drawings.
Embodiments of the present application provide a board level shield (BLS, board Level Shield). Fig. 1 is a schematic view of a board-level shield of an embodiment of the application, showing a portion of the components of board-level shield 100 viewed from the side. Fig. 2 is a schematic view of the frame of the board-level shield of fig. 1, showing parts of the cover removed.
As shown in fig. 1 and 2, the board-level shield can 100 includes:
a frame 101 including a wall portion 1011 extending in a first direction and continuous 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 connection portion 1013 connecting the wall portion 1011 and the support portion 1012; and
the cover 102 is capable of covering the frame 101 on one side of the support portion 1012, and is capable of electromagnetically shielding one or more elements on the circuit board together with the frame 101.
As shown in fig. 1 and 2, at least a portion of the connection part 1013 has a zipper introduction (zipper lead-in) structure 1013A having a certain curvature. Fig. 3 is an enlarged schematic view of the slide fastener introducing structure 1013A of fig. 1, and as shown in fig. 3, the slide fastener introducing structure 1013A includes:
a first tooth 201 that connects the wall 1011 and includes a plurality of first teeth 2011 curved in a predetermined arc from the wall 1011 to the support 1012;
a second tooth portion 202 which is connected to the support portion 1012 and includes a plurality of second teeth 2021 which are curved in a certain arc from the support portion 1012 toward the wall portion 1011;
wherein the plurality of first teeth 2011 and the plurality of second teeth 2021 are staggered to form the zipper introduction structure 1013A. For example, as shown in fig. 3, the first tooth 201 has 4 first teeth 2011, and the second tooth 202 also has 4 second teeth 2021; the plurality of first teeth 2011 undulate and the plurality of second teeth 2021 undulate. The present application is not limited thereto and the specific number and shape of teeth may be determined according to actual needs.
Fig. 4 is a schematic view of the board-level shield case of the embodiment of the present application, showing a case where a part of the components of the combination of the frame 101 and the cover 102 is viewed in the X direction. Fig. 5 is a schematic view of a prior art board-level shield, showing the case where a part of the combined frame and cover is viewed in the X direction.
As shown in fig. 4 and 5, the edge of the frame 101 in the board-level shield can of the embodiment of the present application has a certain curvature 301, compared to the existing board-level shield can having a sharp edge 302, whereby the cover can be easily introduced onto the frame, so that the frame and the cover can be easily combined.
In addition, as shown in fig. 4 and 5, by the zipper introduction structure 1013A having a certain curvature 301 of the embodiment of the present application, the cover 102 in the board-level shield can be closer to the frame 101, not only can the rigidity between the frame and the cover be increased to be firmly installed, but also the gap between the frame and the cover is smaller to ensure the shielding effect.
In an embodiment of the present application, 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. Embodiments of the present application are not limited in this regard and may include a greater number of zipper pull-in structures, for example.
Thus, the cover body can be further easily introduced onto the frame by the plurality of zipper introduction structures, so that the frame and the cover body are further easily combined.
As shown in fig. 2, the wall portion 1011 may include at least: a first plate-like portion 401 and a second plate-like portion 402 that are parallel to each other, and a third plate-like portion 403 connected to one end of the first plate-like portion 401 and one end of the second plate-like portion 402, respectively.
Thus, the wall portion has a substantially rectangular surrounding frame, and one or more elements of the circuit board can be further easily electromagnetically shielded.
As shown in fig. 2, the third plate-like portion 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 part 501 and the supporting part 1012, and a zipper introduction structure 1013B having a certain curvature is provided between the second wall part 502 and the supporting part 1012.
Thus, the slide fastener introducing structure can be easily formed and the board-level shield can be easily mounted to the circuit board.
As shown in fig. 2, a protruding portion 601 protruding from the frame 101 may be provided between the first wall portion 501 and the second wall portion 502, and the protruding portion 601 includes a third wall portion 503, a fourth wall portion 504, and a fifth wall portion 505 respectively connected to the supporting portion 1012.
As shown in fig. 2, the third wall portion 503 may have an angle with the first wall portion 501, the fifth wall portion 505 may have an angle with the second wall portion 502, and the fourth wall portion 504 may be parallel with the first wall portion 501 and the second wall portion 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 radian may be further provided between the third wall portion 503 and the fourth wall portion 504; a zipper structure 1011B having a certain curvature may be provided between the fourth wall portion 504 and the fifth wall portion 505.
Thus, the frame 101 can be easily formed by using a zipper structure, and the board-level shield can be easily mounted on the circuit board.
In the embodiment of the present application, 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 in the same plane as the support portion 1012 by bending.
Fig. 6 is a schematic view of the board-level shield case of fig. 1 being unfolded to a single plane, as shown in fig. 6, in which 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 single plane (i.e., XZ plane shown in fig. 1) with the supporting portion 1012.
Thus, the board-level shield can be easily processed, stored, and transported, and can be easily mounted on a circuit board.
As shown in fig. 1, the cover 102 may include a body portion 1021 extending in the second direction, and a fixing portion 1022 connecting the body portion 1021 and extending in the first direction; the fastener insertion structures 1013A and/or 1013B of the connection unit 1013 can guide the fixing unit 1022.
Thereby, the cover body can be further easily introduced onto the frame, so that the frame and the cover body 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 can also have other structures or components, and the description thereof will be omitted herein with reference to the related art. In addition, parts or elements not specifically designated in fig. 1 to 6 may be referred to the related art, and the present application is not limited thereto.
Further, the respective structures or components are only exemplified above, but the present application is not limited thereto, and the specific contents of the respective structures or components may also be referred to the related art; it is also possible to add structures or components not shown in fig. 1 to 6 or to reduce one or more structures or components in fig. 1 to 6.
While the application has been described in connection with specific embodiments, it will be apparent to those skilled in the art that the description is intended to be illustrative and not limiting in scope. Various modifications and alterations of this application will occur to those skilled in the art in light of the spirit and principles of this application, and such modifications and alterations are also within the scope of this 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 which 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 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 (9)
1. A board level shield, characterized in that the board level shield comprises:
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 connection portion connecting the wall portion and the support portion; and
a cover body capable of covering the frame on one side of the support portion, and capable of electromagnetically shielding one or more elements on a circuit board together with the frame;
wherein at least one part of the connecting part is provided with a zipper introducing structure with a certain radian;
the slide fastener introducing structure includes:
a first tooth portion that connects the wall portion and includes a plurality of first teeth that curve the certain arc from the wall portion to the support portion;
a second tooth portion that connects the support portion and includes a plurality of second teeth that curve the certain arc from the support portion toward the wall portion;
wherein the first plurality of teeth and the second plurality of teeth are staggered to form the zipper introduction structure.
2. The board level shield of claim 1, wherein the connection portion includes a plurality of the zipper lead-in structures.
3. The board level shield of claim 1, wherein the wall portion comprises at least: a first plate-shaped part and a second plate-shaped part which are parallel to each other, and a third plate-shaped part which is respectively connected with one end of the first plate-shaped part and one end of the second plate-shaped part.
4. A board-level shield can according to claim 3, 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; the first wall part and the supporting part are provided with the zipper introducing structure with a certain radian, and the second wall part and the supporting part are provided with the zipper introducing structure with a certain radian.
5. The board-level shield of claim 4, wherein the first wall portion and the second wall portion have therebetween a convex portion protruding from the frame, the convex portion including a third wall portion, a fourth wall portion, and a fifth wall portion respectively connected to the support portion.
6. The board level shield of claim 5, wherein the third wall portion is angled with respect to the first wall portion, the fifth wall portion is angled with respect to the second wall portion, and the fourth wall portion is parallel with the first wall portion and the second wall portion.
7. The board level shield of claim 5 wherein the third wall portion and the fourth wall portion have a zipper structure therebetween that is curved; a zipper structure with a certain radian is arranged between the fourth wall part and the fifth wall part.
8. The board-level shield can according to claim 5, wherein the first board-like portion, the second board-like portion, the first wall portion, the second wall portion, the third wall portion, the fourth wall portion, and the fifth wall portion can be in one plane with the supporting portion by bending.
9. The board-level shield can according to any one of claims 1 to 8, 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 slide fastener introduction structure of the connecting portion is capable of guiding the fixing portion.
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 CN111954451A (en) | 2020-11-17 |
| CN111954451B true 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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| Country | Link |
|---|---|
| CN (1) | CN111954451B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111954451A (en) | 2020-11-17 |
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