CN106413368B - A kind of shielding case, substrate and circuit board - Google Patents
A kind of shielding case, substrate and circuit board Download PDFInfo
- Publication number
- CN106413368B CN106413368B CN201610933450.5A CN201610933450A CN106413368B CN 106413368 B CN106413368 B CN 106413368B CN 201610933450 A CN201610933450 A CN 201610933450A CN 106413368 B CN106413368 B CN 106413368B
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- Prior art keywords
- shielding case
- shielding
- substrate
- electronic component
- shielded rack
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Classifications
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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)
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of shielding case, substrate and circuit boards, the side plate to be matched by shape, size that the side edge thereof of shielding case is extended the shielding area that the shape for being bent to form profile, size and the shielded rack being fixed on substrate enclose out, and the matched of the height of the side plate each section being bent to form and shielded rack corresponding position；A shielding chamber closed, for accommodating electronic component is collectively formed in shielding case and shielded rack in this way.Electronic component in the shielding chamber, due to shielding chamber be it is closed, the electromagnetic interference that can shield the outer bound pair electronic component in all directions will not may be implemented, it can achieve the effect that full-shield, improve satisfaction of users there are gap.
Description
Technical field
The present invention relates to electronic circuit fields, more specifically to a kind of shielding case, substrate and circuit board.
Background technique
In electronic circuit, interference can be generated between each component or electronic component, influence the normal operation of system.So
Surrounding electronic component setting shielding case in the circuit board is needed, to shield other such as conducting wires, circuit or other components to the electricity
The interference of subcomponent.
At present for mainly passing through the shape of fixing profile, size and the shielding again on being fixed on the shielded rack on substrate
The shielding case that the shielding area that frame encloses matches realizes the electromagnetic shielding to electronic component.And since shielding case is by one
What the direct backfin of block electromagnetic shielding material was formed, by technique influenced its corner be difficult to obtain it is really seamless be connected, with
Corner's presence can make electromagnetic wave enter the gap in shielding area after shielded rack is fixed.It specifically can be found in Fig. 1, shielding case 1 '
Including cover board 11 ' and side plate 12 ', there are four side plates 12 ' respectively for corresponding four sides of cover board 11 ', for shielding case 1 ' to be fixed on screen
It covers on frame, there are gaps 2 ' when enclosing between 4 side plates 12 '.In this shielding cavity room for resulting in shielding case and shielded rack to be formed
Electronic component and other electronic components still exist interference, affect the bulk shielding performance of shielding case, make shielding case without
Method achievees the effect that full-shield, reduces satisfaction of users.
Summary of the invention
The technical problem to be solved in the present invention is that: the existing shielding case being arranged on circuit boards, on substrate
Shielded rack can retain when fixed can make electromagnetic wave enter the gap in shielding area, the screen for causing shielding case and shielded rack to be formed
It covers the indoor electronic component of chamber and other electronic components and still there is interference, affect the bulk shielding performance of shielding case, make
Shielding case is unable to reach the effect of full-shield, reduces satisfaction of users.For the technical problem, a kind of shielding is provided
Cover, substrate and circuit board.
In order to solve the above technical problems, the present invention provides a kind of shielding case, the shielding case includes: cover board, and by institute
It states side edge thereof and extends the side plate being bent to form；Shape, the size of the side plate profile are enclosed with shielded rack on substrate is fixed on
Shape, the size of shielding area out match；The height of the height of described side plate each section and the shielded rack corresponding position
Matching, so that shielding chamber closed, for accommodating electronic component is collectively formed in the shielding case and the shielded rack.
Further, it is recessed that the shielding case inner wall is provided with and corresponds to the shape of electronic component at this, size matches
It falls into, the recess with the electronic component for protruding the substrate for cooperating.
Further, the height of the shielding case and heat source corresponding position on the substrate is greater than nonthermal source corresponding position
Highly.
Further, the shielding case further includes conductive filler layer, and the conductive filler layer is to be filled in the electronics member
Heat Conduction Material between part and the shielding case inner wall.
Further, at least one angle of the cover board is fillet.
Further, the present invention provides a kind of substrate, the substrate is fixed with shielded rack, and the shielded rack, which is enclosed in, to be needed
The surrounding electronic component being electromagnetically shielded forms shielding area；Shape, size and the shielding case of the shielding area profile
Shape, the size of the fixed side profile of side plate are mutually matched；The height of described shielded rack each section and the shielding case corresponding position
Matched so that shielding cavity closed, for accommodating electronic component is collectively formed in the shielding case and the shielded rack
Room.
Further, the shielded rack includes the metal strip of multiple fixations on the substrate, each metal strip breakpoint
Formula is to enclose the shielding chamber.
Further, the present invention also provides a kind of circuit board, the circuit board includes any of the above-described kind of shielding case and upper
State any substrate.
Further, the shielding case is fixed on the shielded rack by way of buckle, crimping or welding.
Further, each angle of the shielding area is fillet.
Beneficial effect
Shielding case, substrate and circuit board provided in an embodiment of the present invention, by the way that the side edge thereof of shielding case is extended bending
Form the shape of profile, shape, the size of the shielding area that size encloses out with the shielded rack being fixed on substrate match
Side plate, and the matched of the height of the side plate each section being bent to form and shielded rack corresponding position；Shielding case and shielding in this way
A shielding chamber closed, for accommodating electronic component is collectively formed in frame.Electronic component is in the shielding chamber, due to shielding
Chamber be it is closed, will not may be implemented shield the electromagnetism of the outer bound pair electronic component in all directions there are gap
Interference, it can achieve the effect that full-shield, improve satisfaction of users.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the upper cover structural schematic diagram for the existing shielding case that background of invention provides；
Fig. 2 is a kind of board structure of circuit schematic diagrames that first embodiment of the invention provides；
Fig. 3 is a kind of shielding case structure schematic diagram that first embodiment of the invention provides；
Fig. 4 is a kind of schematic diagram of substrate structure that first embodiment of the invention provides.
Specific embodiment
First embodiment
It is deposited to solve the existing shielding case being arranged on circuit boards after fixing with the shielded rack on substrate in corner
In gap, cause still make to enter in shielding area in gap electromagnetic wave to form interference to the electronic component in shielding area
The problem of, present embodiments provide a kind of new circuit board comprising shielding case and the substrate for being fixed with shielded rack.
Referring to Fig. 2, Fig. 2 is a kind of board structure of circuit schematic diagrames that first embodiment of the invention provides, comprising: shielding case 21
With substrate 22.Wherein,
21 specific structure of shielding case may refer to Fig. 3, and Fig. 3 is 21 knot of a kind of shielding case that first embodiment of the invention provides
Structure schematic diagram, including cover board 211 and side plate 212, latus inframedium 212 are bent to form by the extension of each edge of cover board 211.
22 specific structure of substrate may refer to Fig. 4, and Fig. 4 is that 21 structure of a kind of substrate that first embodiment of the invention provides is shown
It is intended to, including shielded rack 221 and electronic component 222.Wherein, shielded rack 221 is enclosed in the electronics member being electromagnetically shielded
222 surrounding of part forms shielding area, and shielded rack 221 and electronic component 222 fix 22 on substrate.
It is worth noting that, in the present embodiment, the shape of 212 profile of side plate, size should with it is fixed on substrate 22
Shape, the size for the shielding area that shielded rack 221 encloses out match.Specifically, the shape of 212 profile of side plate, size can be with
It is identical as the shape for the shielding area that shielded rack 221 is enclosed, size.It should be understood that the shape of 212 profile of side plate,
Size refers to shape, the size of the top view of side plate 212 and 221 affixed side of shielded rack.
It is the shape for the shielding area that shape, the size of cover board 211 can enclose out with shielded rack 221, big in the present embodiment
It is small identical, it is vertically connected between cover board 211 and side plate 212 at this time.It is worth noting that, the shape of cover board 211, size can be with
The shape of shielding area, of different sizes, inclination is connected between cover board 41 and side plate 42 at this time.To the shape of cover board 41 in the present embodiment
Without limitation, specific shape and size can be according to the actual setting demands of manufacturer or user etc. for shape and size
It is determined.
In the present embodiment, shielding case 21 can be made of metal plate.Wherein, cover board 41 can be flat straight panel, can also
Think arc convex plate or recess plate.
In the present embodiment, fillet can be set by least one turning of cover board 41, to realize shielding case 21 at turning
Locate more smooth with the fixation of shielded rack 221.It should be understood that each turning of cover board 41 may be set to be the shapes such as right angle
Shape.
In the present embodiment, the height of 212 each section of side plate should match with the height of 221 corresponding position of shielded rack.Tool
Body, after 212 each section of side plate is fixed with 221 corresponding position of shielded rack, each brim height of cover board 211 is consistent.
In the present embodiment, shielding case 21 is connected and fixed by side plate 212 with the shielded rack 221 on substrate 22, forms one
Closed shielding chamber, the shielding chamber will need to carry out electromagnetism for accommodating the electronic component 222 being electromagnetically shielded
The electronic component 222 of shielding is separated with other electronic components 222, to realize the electronic component masked outside shielding cavity room
222 pairs of electromagnetic interferences for being contained in the indoor electronic component 222 of shielding cavity.
In the present embodiment, shielded rack 221 can be multiple metal strips as shown in Figure 4, these metal strips are fixed on base
22 top broken-point formula of plate is enclosed shielding area.It should be understood that constituting the metal strip at least two of shielded rack 221, each
It is separately fixed between metal strip on substrate 22, is not connected directly between metal strip.At this time side plate 212 with each metal strip it
Between position at corresponding height should be higher than at remaining position, to be harmonious at position between each metal strip with substrate 22,
Form a closed shielding cavity.
It is to be further understood that shielded rack 221 can also be that the becket frame of a closure, the becket frame are fixed on base
On plate 22, it is shielding area that middle part, which encloses region,.
It should be noted that the present embodiment in, 221 respective heights of shielded rack of each corner should be higher, with realize with
The matching of shielding case corner clearance position.
In the present embodiment, the metal strip or becket frame for forming shielded rack 221 can be scolding tin, be also possible to pass through scolding tin
Fixed metal frame body on substrate 22.
In the present embodiment, shielding case 21 can be fixed on shielded rack 221 by snap, for example, can be in side plate
212 is raised with setting clamping in the affixed side of shielded rack 221, and corresponding position setting and aforementioned clamping are convex on shielded rack 221
Act the clamping groove to match.When fixed, the clamping protrusion in the affixed side of side plate 212 and shielded rack 221 is fastened on screen
It covers in the clamping groove on frame 221, shielding case 21 is fixed on shielded rack 221 to realize.
Shielding case 21 can also be fixed on shielded rack 221 by crimping mode, for example, for example can use press-connection machine will
Shielding case 21 is crimped on shielded rack 221.
Shielding case 21 can also be fixed on shielded rack 221 by welding manner, for example, for example can use soldering iron and weldering
Shielding case 21 is welded on shielded rack 221 by tin.
It should be understood that foregoing description is only the specific example of three kinds of fixed forms provided in this embodiment, not generation
Table the present embodiment is only capable of being fixed by these three fixed forms, and shielding case 21 is fixed on shielding as long as being in fact able to achieve
It is within the scope of the present invention on frame 221.
In the present embodiment, each angle for the shielding area that shielded rack 221 is enclosed can be disposed as fillet, that is, shield
Each turning of frame 221 be fillet, at this time the turning of corresponding shielding case 21 may be fillet setting, so as to more smoothly with
Shielded rack 221 is fixed.
In the present embodiment, height can be different everywhere in shielded rack 221.For example, shielded rack 221 is multiple metals
The setting height of item, each metal strip can be different, and the height of 212 each section of side plate of shielding case 21 can also be at this time
It is different.In another example shielded rack 221 is the becket frame of a closure, the height of the various pieces of becket frame can not
Together, i.e. the surface of becket frame can be set to concavo-convex.Specifically, the height of 212 each section of side plate of shielding case 21 and each
The setting height adduction of corresponding metal strip gets up to obtain total height everywhere consistent.
Circuit board provided in this embodiment comprising shielding case and the substrate for being fixed with shielded rack, by by the lid of shielding case
Edges of boards edge extends the shape for the shielding area that the shape, size and the shielded rack being fixed on substrate for being bent to form profile enclose out
The side plate that shape, size match, and the matched of the height of the side plate each section being bent to form and shielded rack corresponding position；This
A shielding chamber closed, for accommodating electronic component is collectively formed in sample shielding case and shielded rack.Electronic component is in the screen
Cover chamber, due to shielding chamber be it is closed, will not there are gap, may be implemented in all directions can shield outer bound pair this
The electromagnetic interference of electronic component, it can achieve the effect that full-shield, improve satisfaction of users.
Second embodiment
The present embodiment first embodiment provide comprising shielding case on the basis of, provide a kind of more specific shielding case
Structure.
In the present embodiment, on the inner wall side of shielding case 21, the indoor electronic component of shielding cavity is can be set and is contained in
The recess that 222 shape, size, position all match, the recess is for the 222 phase interworking of electronic component with protrusion substrate 22
It closes.For example, can match in shape, the size that electronic component 222 corresponding with position at this is arranged in the inside of cover board 211
Recess, when shielding case 21 to be fixed on shielded rack 221,222 convex portion of electronic component can enter lid with corresponding matching
In the recess being arranged on the inside of plate 211.The requirement for side plate 212 being arranged height can be reduced in this way, while can also make shielding case
It is bonded with electronic component 222 even closer.
In the present embodiment, in the present embodiment, shielding case 21 and the height of heat source corresponding position on substrate 22 be can be set to
Greater than the height of nonthermal source corresponding position.Typically the heat source on substrate 22 is that the needs accommodated in shielding cavity room carry out electricity
The electronic component 222 of magnetic screen.Specifically, can be set corresponding with the electronic component 222 accommodated in shielding cavity room on cover board 211
Height at position is greater than the height of neighboring area position, and the heat that the electronic component 222 accommodated in shielding cavity room generates first collects
In on cover board 211 with 222 corresponding position of electronic component, and since cover board 211 is from 222 corresponding position of electronic component to four
All regions, height are distributed from high to low, can make so fast with the heat of 222 corresponding position of electronic component on cover board 211
Speed is conducted to neighboring area, to realize the effect of rapid cooling.It should be understood that on cover board 211 each region material
Thickness can be different, it is contemplated that metal plate has good heat conductivity, can be by cover board by taking cover board 211 is metal plate as an example
It is set as thicker with respect to other regions with the thickness of 222 corresponding position of electronic component on 211, the thermal capacitance of metal plate in this way at this
Amount can be bigger compared with other regions, and heat dissipation effect also can be more preferable.
In the present embodiment, the electronic component 222 be electromagnetically shielded and screen that can also be accommodated in shielding cavity room
The filling Heat Conduction Material between 21 inner wall of cover (inner wall for specifically referring to cover board 211 and side plate 212) is covered as conductive filler layer.This
Sample can greatly reinforce the heat-sinking capability of shielding case due to the presence of conductive filler layer, realize shielding case outside comprehensive shielding
While the electromagnetic interference of bound pair electronic component 222, it may have better heat-sinking capability.It should be understood that filling
Heat Conduction Material the space between 21 inner wall of electronic component 222 and shielding case can be completely filled out, to improve to the maximum extent
The heat-sinking capability of shielding case.Wherein, Heat Conduction Material can be graphene, aluminium oxide, silica, zinc oxide, aluminium nitride, nitridation
Boron, silicon carbide, silica flour etc. have the material of preferable heating conduction.
Shielding case provided in this embodiment, by being arranged and being contained in the indoor electronic component of shielding cavity on shielding case
The recess that 222 shape, size, position all match, and the height that shielding case and heat source corresponding position on substrate is arranged is greater than
The height of nonthermal source corresponding position, and fill Heat Conduction Material between electronic component and shielding case inner wall, make shielding case with base
After shielded rack on plate is fixedly connected, not only realizes the outer bound pair of shielding in all directions and be contained in the indoor electronics of shielding cavity
The electromagnetic interference of element also achieves the rapid cooling to the indoor electronic component of shielding cavity, and further the user experience is improved
Satisfaction.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
It is limited to above-mentioned specific embodiment, the above mentioned embodiment is only schematical, rather than restricted
, those skilled in the art under the inspiration of the present invention, are not departing from present inventive concept and claimed
Under ambit, many forms can be also made, all of these belong to the protection of the present invention.
Claims (9)
1. a kind of shielding case, which is characterized in that the shielding case includes cover board, and is bent to form by side edge thereof extension
Side plate, there are gaps for the side sheet room；Shape, size and the shielded rack being fixed on substrate of the side plate profile enclose out
Shape, the size of shielding area match；The shielded rack includes the metal strip of multiple fixations on the substrate, each described
Metal strip breakpoint formula is enclosed the shielding area；The height of the height of described side plate each section and the metal strip corresponding position
Degree matching, the gap of the side sheet room are matched with the metal strip, size, and the gap of the side sheet room and the metal
Item spatially face so that the shielding case and the shielded rack be collectively formed it is closed, for accommodating electronic component
Shield chamber.
2. shielding case as described in claim 1, which is characterized in that the shielding case inner wall, which is provided with, corresponds to electronics member at this
The recess that shape, the size of part match, the recess with the electronic component for protruding the substrate for cooperating.
3. shielding case as described in claim 1, which is characterized in that heat source corresponding position on the shielding case and the substrate
Height is greater than the height of nonthermal source corresponding position.
4. shielding case as claimed in claim 3, which is characterized in that further include conductive filler layer, the conductive filler layer is to fill out
Fill the Heat Conduction Material between the electronic component and the shielding case inner wall.
5. shielding case according to any one of claims 1-4, which is characterized in that at least one angle of the cover board is fillet.
6. a kind of substrate, which is characterized in that be fixed with shielded rack on the substrate, the shielded rack includes described in multiple be fixed on
Metal strip on substrate, each metal strip breakpoint formula are enclosed in the surrounding electronic component being electromagnetically shielded and form shielding
Region；Shape, the size of the fixed side profile of shape, size and the shielding case side plate of the shielding area profile are mutually matched；Institute
Stating shielding case side sheet room, there are gap, the height of the height of described metal strip each section and the shielding case side plate corresponding position
Match, the gap of the side sheet room is matched with the metal strip, size, and the gap of the side sheet room and the metal strip exist
Spatially face, so that shielding closed, for accommodating electronic component is collectively formed in the shielding case and the shielded rack
Chamber.
7. a kind of circuit board, it is characterised in that including shielding case as described in any one in claim 1-5, and such as claim
Substrate described in 6.
8. circuit board as claimed in claim 7, which is characterized in that the shielding case is by way of buckle, crimping or welding
It is fixed on the shielded rack.
9. circuit board as claimed in claim 7 or 8, which is characterized in that each angle of the shielding area is fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933450.5A CN106413368B (en) | 2016-10-31 | 2016-10-31 | A kind of shielding case, substrate and circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933450.5A CN106413368B (en) | 2016-10-31 | 2016-10-31 | A kind of shielding case, substrate and circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106413368A CN106413368A (en) | 2017-02-15 |
| CN106413368B true CN106413368B (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610933450.5A Active CN106413368B (en) | 2016-10-31 | 2016-10-31 | A kind of shielding case, substrate and circuit board |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108124414B (en) * | 2018-01-12 | 2023-11-03 | 西安易朴通讯技术有限公司 | Shielding cover and terminal |
| CN110290687B (en) * | 2019-06-05 | 2024-02-06 | 广州方邦电子股份有限公司 | Shielding cover, circuit board with shielding cover and manufacturing method |
| CN112399768B (en) * | 2019-08-13 | 2023-05-12 | Oppo广东移动通信有限公司 | Shielding cover, circuit board assembly and electronic equipment |
| CN112367090B (en) * | 2020-10-29 | 2022-08-05 | 红相股份有限公司 | Anti-electromagnetic interference receiving module |
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| CN2716973Y (en) * | 2004-04-22 | 2005-08-10 | 宣得股份有限公司 | Electromagnetic wave shielding housing |
| CN1816272A (en) * | 2004-12-06 | 2006-08-09 | 株式会社东芝 | Electrocircuit mode equipment |
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| Publication number | Publication date |
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| CN106413368A (en) | 2017-02-15 |
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