CN101340806B - Screening arrangement and method for producing the same - Google Patents
Screening arrangement and method for producing the same Download PDFInfo
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- CN101340806B CN101340806B CN2007101226077A CN200710122607A CN101340806B CN 101340806 B CN101340806 B CN 101340806B CN 2007101226077 A CN2007101226077 A CN 2007101226077A CN 200710122607 A CN200710122607 A CN 200710122607A CN 101340806 B CN101340806 B CN 101340806B
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- framework
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- spring finger
- sidewall
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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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- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention provides a shielding device and a method used for preparing the shielding device. One demonstration embodiment provides a shielding device which is applicable to providing electromagnetic interference shielding for one or more electric parts on a substrate; on the whole, the shielding device comprises a frame and a cover. In the demonstration embodiment, the frame comprises a side wall which restricts at least an opening along the upper part of the frame; the side wall is designed to almost surround one or more electric parts on the substrate; the cover comprises an upper surface which basically covers the frame and is provided with at least an opening and a spring finger-shaped part which almost suspends downwards from the upper surface. The internal side of the side wall of the frame is provided with an internal locking part which is used for being locked with the spring finger-shaped part of the cover, thus installing at least part of the cover to the frame, basically covering at least one opening restricted by the frame and leading the cover to be electrically connected with the frame.
Description
Technical field
The present invention relates generally to a kind of electromagnetic interference (EMI) screening arrangement, relates more specifically to a kind of screening arrangement that electromagnetic interference shield is provided for the one or more electric components on the substrate that is applicable to.In addition, the invention still further relates to a kind of method that is used to make electromagnetic interference shielding device.
Background technology
The description of this part only provides with the present invention and discloses relevant background information, and does not constitute prior art.
In normal running, the electronic/electric in the equipment can produce the electromagnetic energy of not expecting usually, because the EMI that produces through radiation transmits, this electromagnetic energy can be disturbed the operation of adjacent electronic/electric.In order to eliminate or to alleviate the negative effect that produces by electromagnetic interference at least, can use radome/device to come electromagnetic interference shield to be provided as electronic/electric.
A kind of screening arrangement can comprise two component type structures, and wherein a lid is installed to a framework.In fact, two component type screening arrangements have the gap between the adjacent part of the cover and frame frame of screening arrangement inevitably, and said gap can allow EMI therefrom to pass through, thereby reduce shield effectiveness.At present; Trend along with the frequency increase that increasing electronic unit produced; For the shield effectiveness that obtains to expect and avoid the RF (radio frequency) from said gap to reveal, desired is to make the gap between the cover and frame frame of screening arrangement be reduced to as much as possible little.
Again with regard to two component type screening arrangements; In order Lock Part/structure to be set between said lid and said framework, on the sidewall of at least one in said lid and/or said framework hole, groove or the similar structures as Lock Part is set usually so that said lid is installed to said framework.
Summary of the invention
According to various aspects disclosed by the invention, provide to be applicable to each exemplary embodiment that the screening arrangement of electromagnetic interference shield is provided for the one or more electric components on the substrate.In one exemplary embodiment, screening arrangement comprises framework substantially, and this framework has the sidewall that limits at least one opening along the top of this framework, and said sidewall is configured to roughly center on the said one or more electric components on the said substrate.Lid is configured to cover basically said at least one opening of said framework.Said lid comprises upper surface and the spring finger that roughly dangles from this upper surface downwards.Said framework includes the internal lock parts of the inboard location of the sidewall that is positioned at said framework.Said internal lock unit architecture becomes to engage with the spring finger interlocking of said lid; Thereby at least in part said lid is installed to said framework, to cover said at least one opening of limiting said framework basically and said lid is electrically connected to said framework.Said screening arrangement can operationally be used for the said one or more electric components that are positioned on the said substrate that are positioned among the inside that is limited jointly said framework, said lid and said substrate are shielded.
The said Lock Part that is used at least in part said lid is installed to said framework is positioned at the roughly side of the sidewall of said framework, and is in the roughly inner position of said screening arrangement.Therefore, can hole, groove, opening or similar structures be set on said sidewall, this can improve the electromagnetic interference shield performance and the manufacturability of two component type screening arrangements.
Said framework can comprise the stretching lip, and at least one sidewall of this stretching lip and this framework integrally forms, and said at least one sidewall roughly in the side extend.At this, said stretching lip comprises the said internal lock parts of said framework.
The spring finger of said lid can include projection, and said projection is configured for engaging with the said internal lock parts interlocking of said framework.Said projection can comprise the combination of protuberance, clamp, hasp, lock bolt, spring finger, pallet, rib, ridge, perk inclined-plane, boomerang shape part, lance shape element, depression, half depression and said structure etc.The said internal lock parts of said framework can include from said stretching lip roughly to the arm that extends below.In addition, the arm of said inside of frame Lock Part can include opening, and said open construction becomes to be used for when said spring finger engages with the interlocking of said internal lock parts, releasably receiving the projection of the spring finger of said lid.
Said lid also includes the wall part that roughly dangles from the upper surface of said lid downwards.This wall part can engage with at least one sidewall of said framework when the spring finger of said lid engages with said inside of frame Lock Part interlocking.At this, the wall part of said lid and engaging of said at least one sidewall of said framework can provide between said lid and the said framework electrical ground.The spring finger of said lid can roughly be positioned at the side of the wall part of said lid.Said at least one sidewall that engages with wall part said lid said framework can be roughly between the wall part of the spring finger of said lid and said lid.In addition, the wall part of said lid can comprise contact component, and this contact component is used for flexibly engaging with said at least one sidewall of said framework.The wall part of said lid can integrally form with the upper surface of said lid.
Said lid can include two or more spring fingers and two or more wall parts.And said framework can include two or more internal lock parts, and corresponding of being configured in said two or more spring fingers with said lid engages each internal lock parts.
Said lid can be installed to said framework along the direction of approximate vertical, from the dismounting of said framework and be installed to said framework again, and the whole area of coverage (general footprint) zone in addition that can not collide said framework.
The sidewall of said framework can not have construction opening, thus the manufacturability of screening arrangement and can improve by the electromagnetic interference shield performance that screening arrangement provides.
The lock part of said framework can be configured to receive the spring finger of said lid and at least in part said lid is installed to said framework, makes that any gap between said lid and the said framework is about 0.05 millimeter or littler.
In another exemplary embodiment, a kind of screening arrangement comprises framework substantially, and this framework can be fixed to substrate and have the sidewall that limits at least one opening along the top of this framework.The stretching lip roughly extends in the interior side of said sidewall from the top of said sidewall.Lid is configured for and is installed to said framework.The flexible spring finger that said lid has upper surface and forms from this upper surface.Said flexible spring finger roughly dangles downwards from said upper surface in the whole area of coverage that is limited said upper surface.The said flexible spring finger of said lid releasably engages with at least a portion of the stretching lip of said framework at the inboard location place of the said sidewall of said framework, is used at least in part said lid being installed to said framework.The upper surface of said lid extends at least a portion of the stretching lip of said framework, thereby when said lid is installed to said framework, covers said at least one opening that is limited said framework basically.In the present embodiment, said screening arrangement can operationally be used for the said one or more electric components that are positioned on the said substrate that are positioned among the inside that is limited jointly said framework, said lid and said substrate are shielded.
In this exemplary embodiment, said lid roughly is installed to said framework in the interior side of said sidewall.Therefore, hole, groove, opening or similar structures can be set, this will improve the shielding properties and the manufacturability of two component type screening arrangements.
Said lid also can comprise flexible wall part, and the upper surface from said lid roughly dangles downwards said flexible wall part in the position of the said flexible spring finger of contiguous said lid.The said flexible spring finger of said lid can be positioned at the roughly side of the said flexible wall part of said lid, thereby at least a portion of the sidewall of said framework is received between said flexible spring finger and the said flexible wall part through joint when said lid is mounted to said framework.In addition, said lid can include two or more flexible spring fingers and two or more flexible wall parts.Each spring finger all can roughly be positioned to contiguous corresponding wall part.
The stretching lip of said framework can comprise the internal lock parts, and said internal lock parts are used for when said lid is positioned to cover said at least one opening that is limited said framework with respect to said framework, releasably engaging with the said flexible spring finger of said lid and at least in part said lid being installed to said framework.
According to other various aspects disclosed by the invention; The exemplary embodiment of making the method for electromagnetic interference shielding device is provided; Said electromagnetic interference shielding device comprises framework that can be fixed to substrate and the lid that can be installed to said framework, and said electromagnetic interference shielding device is used for the one or more electric components that are positioned on the said substrate that are positioned among the inside that is limited jointly said framework, said lid and said substrate are shielded.In one exemplary embodiment, said method comprises: first material pieces is stretched to form said framework, so that integrally form the sidewall and the stretching lip of this framework.Said stretching lip roughly extends in the interior side of said sidewall from the top of said sidewall.This method also comprises second material pieces is stretched to form said lid, so that integrally form the upper surface and the wall part of said lid.Said wall part from the upper surface of said lid roughly to extending below.Said method further comprise from the upper surface of said lid the wall part of contiguous said lid and said wall part roughly in the position formation spring finger of side; Thereby make said spring finger be oriented to engage, so that at least in part said lid is installed to said framework with the stretching lip interlocking of said framework.
Said method also comprises roughly at least a portion of the said stretching lip of bending downwards, receives at least a portion of the spring finger of said lid to form the internal lock parts, thereby at least in part said lid is installed to said framework.On the spring finger of said lid, can form one or more projections; And in said inside of frame Lock Part, can form corresponding one or more opening; Be used to receive corresponding said one or more projections, thereby at least in part said lid be installed to said framework.
According to the description that provides at this, the further content that the present invention uses will become clear.Should be understood that said description is only to be used for task of explanation with concrete example, rather than is used for limiting scope disclosed by the invention.
Description of drawings
Accompanying drawing described here only is used for task of explanation, and is not intended to limit by any way scope disclosed by the invention.
Fig. 1 is under the situation that the cover and frame frame separates, the stereogram of an exemplary embodiment of screening arrangement;
Fig. 2 is the local amplification stereogram of the inside of frame Lock Part of expression screening arrangement shown in Figure 1;
Fig. 3 is the local amplification stereogram of the spring finger of the lid of expression screening arrangement shown in Figure 1;
Fig. 4 is the stereogram of the engagement state of the spring finger of the lid of expression screening arrangement shown in Figure 1 and inside of frame Lock Part;
Fig. 5 is the local amplification view of the engagement state of the spring finger of expression lid and inside of frame Lock Part;
Fig. 6 is the stereogram that is illustrated in the framework with internal lock parts in another exemplary embodiment of screening arrangement.
Embodiment
Following description is merely exemplary in essence, discloses, uses or use and be not intended to limit the present invention.
Therefore and do not mean that and limit in description, only be used for reference at this employed some term.For example, such as " on ", D score, " ... on ", " ... under ", " top " and terms such as " ends " be meant the direction in the accompanying drawing of institute's reference.Such as " preceding ", " backward ", " back ", " end " and terms such as " sides " is consistent and describe the orientation of the each several part of parts arbitrarily in the reference system, can know this reference system through literal and relevant drawings that contrast is described the parts of being discussed.Such term can comprise above definite described word, its derivative and the speech with similar meaning.Similarly, only if spell out in the literary composition, term " first ", " second " and other this type of number of relating to structure do not hint order or order.
When introducing element or characteristic and exemplary embodiment, article " ", " one ", " being somebody's turn to do " and " said " mean and are the one or more such elements or the meaning of characteristic.Term " comprises ", " comprising " and " having " be the comprising property meaning, and mean outside specifically being mentioned, also to have extra element or characteristic.Be also to be understood that unless otherwise indicated with this as execution sequence, method step described here, processing and operation should not be construed as must require they with said or shown in particular order carry out.Should also be understood that and also can adopt extra or interchangeable step.
Fig. 1 representes to have an example of the screening arrangement 100 of two component type structures.Screening arrangement 100 include cover 1 with framework 2, its middle cover 1 is separated with framework and can be installed to this framework 2.
The opening 22 that framework 2 has sidewall 21 and limited said sidewall 21 in the top.Shown embodiment comprises four sidewalls 21, and is as shown in the figure, and each sidewall all roughly is straight.According to concrete shielding requirements and condition, interchangeable embodiment can comprise the framework of the sidewall (for example three sidewalls) with other quantity.In other exemplary embodiment, screening arrangement can comprise the framework with non-straight sidewall (for example, curved wall).Under any situation, sidewall 21 is configured to roughly center on the one or more electric components on the substrate (not shown).
The internal lock parts 23 of lid 1 spring finger 12 and framework 2 can be respectively form in a side or a plurality of side of said lid 1 and framework 2, form at two opposite sides of said lid 1 and framework 2, and perhaps all sides at said lid 1 and framework 2 form.In addition, each side being formed with the internal lock parts 23 that cover 1 spring finger 12 and framework 2 can be provided with one or more spring fingers 12 and/or internal lock parts 23.Specifically; As an example; Lid 1 can include two or more spring fingers 12; Framework 2 can include two or more internal lock parts 23, and the corresponding interlocking that each internal lock parts 23 all is configured in two or more spring fingers 12 with said lid 1 engages.
When lid 1 when being installed to framework 2, the spring finger 12 of lid 1 engages with the internal lock parts 23 of framework 2 so that releasably will cover 1 and framework 2 lock together, and make and cover 1 upper surface 11 opening 22 of cover framework 2 basically.
In shown screening arrangement 100, the sidewall 21 of framework 2 does not have the construction opening that is used for lid 1 is installed to framework 2.Owing to do not have construction opening on the framework 2, therefore can improve the manufacturability of screening arrangement 100 and can improve the electromagnetic interference shield performance that provides by screening arrangement 100.
For example; Internal lock parts 23 (see figure 2)s on the framework 2 can with the spring finger 12 (see figure 3)s mutually interlock of lid on 1; This has guaranteed that lid 1 and framework 2 (for example have the minimal leak gap; And cover 1 and using and/or can not be separated during test panel shielding apparatus 100 (for example, all of a sudden separating or the like) gap less than about 0.05 millimeter etc.), with framework 2.Said " gap " is meant when covering the 1 any interval between the contact portion of lid 1 and framework 2 when being installed to framework 2.
When lid 1 spring finger 12 contacts with framework 2, cover 1 and become with framework 2 and be electrically connected, this can provide cover 1 and framework 2 between function electrical ground.Therefore, said screening arrangement 100 can shield being positioned at the said one or more electric components that are positioned on this substrate among the common inside that limits of framework 2, lid 1 and said substrate (not shown).
In shown screening arrangement 100, framework 2 and/or cover 1 and totally form by stretch process, but also can comprise some parts through shearings/punch process and/or bending process formation.For example, lid 1 spring finger 12 can be through forming from covering 1 upper surface 11 shearings/press-working spring fingers 12 and it being bent downwards.This be processed in to cover in 1 the upper surface 11 stayed hole 13, and spring finger 12 bends downwards from the inside edge 131 of each corresponding hole 13, and is as shown in Figure 3.
Said hole 13 provide want with lid 1 when framework 2 is removed, be used for spring finger 12 internally Lock Part 23 throw off and near the mode of spring finger 12.For example, as shown in Figure 4, when lid 1 is installed to framework 2 and spring finger 12 when engaging with internal lock parts 23, framework 2 near the part of internal lock parts 23 can from/be exposed to the outside through hole 13.Therefore; Spring finger 12 through pushing lid such as (perhaps cam (camming)) 1 from/be exposed to outside part through hole 13; Perhaps (for example through tool using; Pad etc.) pass hole 13 and push spring finger 12 such as (or cam) or push between spring finger 12 such as (or cam) and the internal lock parts 23, can make the bond-off of spring finger 12 and internal lock parts 23.
According to the lid 1 and the structure of framework 2, in operation, lid 1 can be installed to framework 2 along the direction of approximate vertical, from framework 2 dismountings and be installed to framework 2 again, and can not collide the zone beyond the whole area of coverage of framework 2.Can advantageously allow in limited zone, will cover 1 like this and be installed on the framework 2 or will cover 1 and take off from framework 2, thus for lid 1 to the installation and removal of the framework 2 very little space of needs only.Can handle and cover 1 through fetching device (for example the fetching device of vacuumizing etc.), with attach it to framework 2, from framework 2 dismountings and/or be installed to framework 2 again.Should be understood that the zone beyond the whole area of coverage of framework 2 for example not only can comprise the zone beyond the whole area of coverage that is positioned at framework 2 on the substrate, also can comprise the space of the vertical direction that this is regional.
An operation example that lid 1 is installed to framework 2 is following.Through for example framework 2 being welded or soldered to substrate, can framework 2 fix/be connected/be installed to substrate, framework 2 is positioned to center on the one or more electric components on the substrate.Be installed to framework 2 in order to cover 1, make and cover 1 and roughly aim at, specifically, make that covering 1 upper surface 11 is positioned at the roughly position of the opening 22 of cover framework 2 with framework 2.At this, the spring finger 12 of lid 1 is positioned at the internal lock parts 23 corresponding positions with framework 2.Then,, make and cover 1 spring finger 12 and engage, be installed to framework 2 thereby will cover 1 with the internal lock parts 23 of framework 2 through promoting to cover 1 to framework 2.
The operation example that lid 1 is disassembled from framework 2 is following.Remove from framework 2 in order to cover 1, can make pad for example, rigid disk or even the instrument of screwdriver etc. through being formed at the hole 13 that covers 1 when stamping out spring finger 12 and inserting from covering 1.This instrument (is for example moved between the internal lock parts 23 of lid 1 spring finger 12 and framework 2; Promote etc.); So that (for example actuate; Cam etc.) this spring finger 12 internally Lock Part 23 leave, throw off from the internal lock parts 23 of framework 2 thereby will cover 1 spring finger 12.
In lid 1, spring finger 12 is positioned at the side on outward flange/border of covering 1 upper surface 11.That is to say that be formed the edge that do not have from upper surface 11 to the wall part that extends below like operculum, spring finger 12 just forms from the inside distance of outward flange of the upper surface 11 of lid.Have wall part and be formed like operculum, spring finger 12 just forms the inside distance from the border of upper surface 11, and said border can be to cover 1 be formed on and cover 1 upper surface 11 and cover the draw line between 1 the wall part 14.
In one exemplary embodiment, also as shown in Figure 2, framework 2 can include stretching lip 23 ', and this stretching lip 23 ' integrally forms with at least one sidewall 21 of this framework 2, and said at least one sidewall roughly in the side extension.For example, framework 2 can form through stretch process, thus the sidewall 21 of the stretching lip of framework 2 23 ' and framework 2 integratedly (or integrally) form, and between the stretching lip 23 ' of framework 2 and sidewall 21, form draw line.In addition, the above-mentioned internal lock parts 23 stretching lip 23 ' that is arranged in framework 2 is gone up (for example, from its formation/therewith form etc.).In addition, each sidewall 21 of framework 2 can be all forms as one with the adjacent wall of framework 2, thereby sidewall 21 can be formed by a material pieces.
In another exemplary embodiment, the spring finger 12 of lid as shown in Figure 3 includes projection 121, and said projection 121 is configured for engaging with internal lock parts 23 interlockings of framework 2.Projection 121 can form attachment, and it can comprise the combination etc. of protuberance, clamp, hasp, lock bolt, spring finger, pallet, rib, ridge, perk inclined-plane, boomerang shape part, lance shape element, depression, half depression and said structure.
In framework as shown in Figure 22, internal lock parts 23 include from stretching lip 23 ' roughly to the arm that extends below 233, and wherein, said arm 233 can form the part of stretching lip 23 ', downwarping then.The arm 233 of the internal lock parts 23 of framework 2 includes opening 231, and said opening 231 is configured for when spring finger 12 engages with 23 interlockings of internal lock parts, releasably receiving the projection 121 of covering 1 spring finger 12.The opening 231 of internal lock parts 23 can comprise recess, space, cavity, slit, groove, hole (as shown in Figure 2), pit, notch (as shown in Figure 6) and above-mentioned these combination etc., as long as it can receive and engage the projection 121 (perhaps other version on it) of covering 1 spring finger 12.
In the lower end of arm 233, folding edge 232 is crooked and extend in general horizontal direction from this arm 233 through for example, so that when lid 1 is installed to framework 2, stop the end of covering 1 spring finger 12 excessively to get into the space in the framework 2.Folding edge 232 can protect also that electric component on the substrate does not contact with spring finger 12 or by its damage by being positioned at of centering on of framework 2.
In another exemplary embodiment, said spring finger 12 has resilient property, is used for the projection 121 of spring finger 12 is pressed into the opening 231 of the arm 233 of internal lock parts 23.The joint of projection 121 and opening 231 for ease; The bottom of projection 121 can be used as the cam face and operates; Be used for initial promotion/actuate the arm 233 that spring finger 12 leaves the internal lock parts 23 of framework 2, so that this projection 121 is moved and got in the opening 231 of arm 233 of these internal lock parts on the arm 233 of internal lock parts.
In another exemplary embodiment, the position of opening 231 and projection 121 can exchange.That is to say that lid 1 can include said opening, and framework 2 can include said projection.With reference to the above, said opening is arranged on and covers on 1 and structure that said projection is arranged on the framework 2 can obtain identical technique effect, and this is clearly for a person skilled in the art.In addition, can also be configured to, said framework and said lid can include opening and projection.
In shown embodiment, to shown in Figure 5, lid 1 also includes the wall part 14 that roughly dangles from the upper surface 11 of this lid 1 downwards like Fig. 1, Fig. 3.For example, the wall part 14 of lid 1 can integrally form with the upper surface 11 of lid 1.Lid 1 can include two or more wall parts 14.In lid 1, spring finger 12 covers 1 upper surface 11 and covers the interior side of the draw line between 1 the wall part 14 being formed on of lid 1.When lid 1 spring finger 12 is in when engaging with internal lock parts 23 interlockings of framework 2, wall part 14 engages with at least one sidewall 21 of framework 2.The engaging of at least one sidewall 21 of lid 1 wall part 14 and framework 2 can help to keep to cover 1 and the installation of framework 2, and can provide cover 1 and framework 2 between electrical ground.In framework 2, said at least one sidewall 21 that engages with lid 1 wall part 14 of framework 2 is roughly between covering 1 spring finger 12 and covering 1 wall part 14.
In screening arrangement 100, when lid 1 when being installed to framework 2, the wall part 14 of lid 1 has resilient property, is used to press/squeeze/outer surface 234 of the sidewall 21 of engage frame, and is as shown in Figure 5.Specifically, the wall part 14 of lid 1 can comprise contact component 15, is used for the flexibly outer surface 234 of said at least one sidewall 21 of engage frame 2.
In the wall part 14 of lid 1; At least one notch/groove/otch can be set; Its between each segmentation of wall part 14, and with the direction of the length direction approximate vertical of wall part 14 on extend, that is to say; When wall part 14 from cover 1 upper surface 11 when crooked extending, so that wall part 14 is divided into several segmentations with the direction of upper surface 11 approximate vertical of lid 1.Each segmentation is extended from covering 1 upper surface 11 integratedly.Through wall part 14 is divided into several segmentations; Several contacting of separating of covering 1 wall part 14 and the outer surface 234 of framework 2 can thereby be provided, so that wall part of avoiding when wall part does not form said notch/groove, causing 14 (particularly contact component 15) and the not contact gap between the outer surface 234 owing to the unsuitable stress in the wall part 14.In addition, wall part 14 is divided into several segmentations, can also provides and cover 1 wall part 14 and the suitable contact force between the frame outer 234.
When the upper surface 11 of lid 1 wall part 14 and lid 1 integrally formed, this lid 1 can be integrally formed to have single structure, and wherein upper surface 11, wall part 14 and spring finger 12 can be formed by the homogenous material spare of for example electric conducting material.Specifically, can the upper surface 11 that cover 1 wall part 14 and lid 1 be formed, thereby between each wall part 14 of lid and the upper surface 11 that covers, form draw line through stretch process.Spring finger 12 can be through for example from upper surface 11 punching presses and bending (perhaps shear and bend) and form from said upper surface 11.In one exemplary embodiment, spring finger 12 cut out or went out in upper surface 11 before stretch process, bending downwards after stretch process then.Interchangeable is that in scope disclosed by the invention, spring finger 12 can form from upper surface 11 after stretch process.
The present invention openly also provides a kind of method of making electromagnetic interference shielding device 100; This electromagnetic interference shielding device 100 comprises framework 2 that can be fixed to substrate (not shown) and the lid 1 that can be installed to framework 2, and this electromagnetic interference shielding device 100 is used for shielding being positioned at the one or more electric components that are positioned on the said substrate among the common inside that limits of framework 2, lid 1 and said substrate.
Said method can comprise: form the step or the operation of framework 2, its middle frame 2 has sidewall 21 and stretching lip 23 '; Form and cover 1 step or operation, its middle cover 1 has wall part 14 and upper surface 11; And the step or the operation that on lid 1, form spring finger 12.
Said framework forms step or operation and can comprise first material pieces is stretched to form framework 2, so that integrally form the sidewall 21 and stretching lip 23 ' of framework 2.Said stretching lip 23 ' roughly extends in the interior side of sidewall 21 from the top of sidewall 21.
Said lid forms step or operation and can comprise second material pieces stretched and cover 1 to form, and covers 1 upper surface 11 and wall part 14 so that integrally form.Said wall part 14 is from covering 1 upper surface 11 roughly to extending below.
Said spring finger form step or operation can comprise from cover 1 upper surface 11 contiguous cover 1 wall part 14 and this wall part 14 roughly in the position formation spring finger 12 of side; Thereby make spring finger 12 be positioned to engage, be installed to framework 2 so that will cover 1 at least in part with the stretching lip 23 ' interlocking of framework 2.
Can form first and second material pieces from one or more bigger sheet of conductive material at expanded material spare to form framework 2 and to cover before 1 as blank.In addition, forming process as the material pieces of blank can comprise from bigger material piece one or many punching press or chemical milling and go out the material pieces as blank.Can be used for covering 1 very big with the material ranges of framework 2; For example cold-rolled steel, bazar metal, corronil, stainless steel, zinc-plated cold-rolled steel, tin-coated copper alloy, carbon steel, brass, copper, aluminium, copper beryllium alloy, phosphor bronze, steel, and their alloy; Perhaps any conduction and/or magnetic material that other is fit to for example are coated with the plastic material of electric conducting material.
In an exemplary embodiment of said method, at least a portion of stretching lip 23 ' is by roughly bending downwards, receives at least a portion of covering 1 spring finger 12 to form internal lock parts 23, is installed to framework 2 thereby will cover 1 at least in part.
In another exemplary embodiment of said method; On the spring finger 12 of lid 1, form one or more projections 121; And in the internal lock parts 23 of framework 2, form corresponding one or more openings 231; Be used to receive corresponding said one or more projections 121, be installed to framework 2 thereby will cover 1 at least in part.
Lid and/or framework can be by constructing with above-mentioned open material different and/or different sizes; This for example depends on the concrete application space consideration, EMI shielding and radiating requirements and the other factors in the electric component of wanting conductively-closed, whole electric equipment, thereby only is used for explanatory purpose at this material that provides and size.
Description of the present disclosure is merely exemplary attribute, and the various distortion that therefore do not depart from disclosure main idea ought to be within the scope of the present disclosure.These distortion should not be regarded as and depart from spirit of the present disclosure and scope.
Claims (18)
1. screening arrangement, this screening arrangement is applicable to the one or more electric components on the substrate provide electromagnetic interference shield, and comprises:
Framework, this framework has the sidewall that limits at least one opening along the top of this framework, and said sidewall is configured to roughly center on the said one or more electric components on the said substrate, and
Lid, this lid have the upper surface of said at least one opening that is configured to cover basically said framework and the spring finger that roughly dangles from this upper surface downwards,
Said framework includes the internal lock parts of the inboard location of the sidewall that is positioned at said framework; Said internal lock unit architecture becomes to engage with the spring finger interlocking of said lid; Thereby at least in part said lid is installed to said framework; To cover said at least one opening of limiting said framework basically and said lid be electrically connected to said framework; Said framework includes the stretching lip; At least one sidewall in the sidewall of this stretching lip and this framework integrally form and said at least one sidewall roughly in the side extend, said stretching lip comprises said internal lock parts, said internal lock parts include from said stretching lip roughly to the arm that extends below;
Thereby said screening arrangement operationally is used for the said one or more electric components that are positioned on the said substrate that are positioned among the inside that is limited jointly said framework, said lid and said substrate are shielded.
2. screening arrangement according to claim 1 is characterized in that, the spring finger of said lid includes projection, and said projection is configured for engaging with the said internal lock parts interlocking of said framework.
3. screening arrangement according to claim 2; It is characterized in that; The arm of said inside of frame Lock Part includes opening, and said open construction becomes to be used for when the spring finger of said lid engages with the interlocking of said internal lock parts, releasably receiving the projection of said spring finger.
4. screening arrangement according to claim 1; It is characterized in that; Said lid also includes the wall part that roughly dangles from the upper surface of said lid downwards; Said wall part engages with at least one sidewall of said framework when the spring finger of said lid engages with said inside of frame Lock Part interlocking, thus said at least one sidewall of the wall part of said lid and said framework engage the electrical connection that provides between said lid and the said framework.
5. screening arrangement according to claim 4; It is characterized in that; The spring finger of said lid roughly is positioned at the side of the wall part of said lid, and said at least one sidewall that engages with wall part said lid said framework is roughly between the wall part of the spring finger of said lid and said lid.
6. screening arrangement according to claim 4 is characterized in that the wall part of said lid includes contact component, and said contact component is used for flexibly engaging with said at least one sidewall of said framework.
7. screening arrangement according to claim 4 is characterized in that, the wall part of said lid and the upper surface of said lid integrally form.
8. screening arrangement according to claim 4; It is characterized in that; Said lid includes two or more spring fingers and two or more wall parts; And said framework includes two or more internal lock parts, and the corresponding interlocking that each internal lock parts all is configured in said two or more spring fingers with said lid engages.
9. screening arrangement according to claim 1 is characterized in that, said lid can be installed to said framework along the direction of approximate vertical, from the dismounting of said framework and be installed to said framework again, and can not collide the zone beyond the whole area of coverage of said framework.
10. screening arrangement according to claim 1 is characterized in that the sidewall of said framework does not have construction opening, thus the manufacturability of this screening arrangement and can improve by the electromagnetic interference shield performance that this screening arrangement provides.
11. screening arrangement according to claim 1; It is characterized in that; Said inside of frame Lock Part is configured to receive the spring finger of said lid and at least in part said lid is installed to said framework, makes any gap between said lid and the said framework for being less than or equal to 0.05 millimeter.
12. a screening arrangement, this screening arrangement are applicable to the one or more electric components on the substrate provide electromagnetic interference shield, and comprise:
Framework, this framework can be fixed to said substrate, and the stretching lip that has the sidewall that limits at least one opening along the top of this framework and roughly extend in the interior side of said sidewall from the top of said sidewall, an arm from said stretching lip roughly to extending below; And
Lid, this lid is configured for being installed to said framework, the flexible spring finger that this lid has upper surface and forms from this upper surface, said flexible spring finger roughly dangles downwards from this upper surface in the whole area of coverage that is limited said upper surface,
The said flexible spring finger of said lid releasably engages with at least a portion of the stretching lip of said framework at the inboard location place of the sidewall of said framework; Be used at least in part said lid being installed to said framework; When said lid is installed to said framework; The upper surface of said lid extends at least a portion of the stretching lip of said framework, thereby covers said at least one opening that is limited said framework basically
Thereby said screening arrangement operationally is used for the said one or more electric components that are positioned on the said substrate that are positioned among the inside that is limited jointly said framework, said lid and said substrate are shielded.
13. screening arrangement according to claim 12; It is characterized in that; Said lid also comprises flexible wall part; Upper surface from said lid roughly dangles downwards said flexible wall part in the position of the said flexible spring finger of contiguous said lid; And the said flexible spring finger of said lid is positioned at the roughly side of the said flexible wall part of said lid, thereby at least a portion of the sidewall of said framework is received between said flexible spring finger and the said flexible wall part through joint when said lid is mounted to said framework.
14. screening arrangement according to claim 13; It is characterized in that; Said lid includes two or more flexible spring fingers and two or more flexible wall parts, and each spring finger roughly is positioned at the position of contiguous corresponding wall part.
15. screening arrangement according to claim 12; It is characterized in that; The stretching lip of said framework includes the internal lock parts; Said internal lock parts are used for when said lid is positioned to cover said at least one opening that is limited said framework with respect to said framework, releasably engages the said flexible spring finger of said lid and at least in part said lid being installed to said framework.
16. method of making electromagnetic interference shielding device; This electromagnetic interference shielding device comprises framework that can be fixed to substrate and the lid that can be installed to this framework; This electromagnetic interference shielding device is used for the one or more electric components that are positioned on the said substrate that are positioned among the inside that is limited jointly said framework, said lid and said substrate are shielded, and this method comprises:
First material pieces is stretched to form said framework so that integrally form the sidewall and the stretching lip of said framework, this stretching lip from the top of said sidewall said sidewall roughly in the side extend;
Second material pieces is stretched to form said lid so that integrally form the wall part and the upper surface of said lid, said wall part from the upper surface of said lid roughly to extending below; And
From the upper surface of said lid the wall part of contiguous said lid and this wall part roughly in the position formation spring finger of side; Make that this spring finger is positioned to engage with the stretching lip interlocking of said framework, thereby at least in part said lid is installed to said framework.
17. method according to claim 16; It is characterized in that; This method also comprises: at least a portion that roughly bends said stretching lip downwards; Receive at least a portion of the said spring finger of said lid to form the internal lock parts, thereby at least in part said lid is installed to said framework.
18. method according to claim 17 is characterized in that, this method also comprises:
On the said spring finger of said lid, form one or more projections; And
In the said internal lock parts of said framework, form corresponding one or more openings, be used to receive corresponding said one or more projections, thereby at least in part said lid be installed to said framework.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101226077A CN101340806B (en) | 2007-07-06 | 2007-07-06 | Screening arrangement and method for producing the same |
| PCT/CN2008/071569 WO2009006838A1 (en) | 2007-07-06 | 2008-07-07 | Shield means and method of making the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101226077A CN101340806B (en) | 2007-07-06 | 2007-07-06 | Screening arrangement and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101340806A CN101340806A (en) | 2009-01-07 |
| CN101340806B true CN101340806B (en) | 2012-10-31 |
Family
ID=40214724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101226077A Expired - Fee Related CN101340806B (en) | 2007-07-06 | 2007-07-06 | Screening arrangement and method for producing the same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101340806B (en) |
| WO (1) | WO2009006838A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509961A (en) * | 2011-10-24 | 2012-06-20 | 波达通信设备（广州）有限公司 | Radio-frequency cable interface device and shield method thereof |
| CN102647895A (en) * | 2012-04-23 | 2012-08-22 | 昆山诚业德精密模具有限公司 | Negative-pressure shield |
| US9155233B2 (en) * | 2012-08-31 | 2015-10-06 | Sierra Wireless, Inc. | Electromagnetic shield configured to inhibit deformation |
| CN103929935A (en) * | 2013-01-15 | 2014-07-16 | 起源技术美国股份有限公司 | Radiating Emi/rfi Shielding Device |
| US9439333B2 (en) | 2013-01-15 | 2016-09-06 | Genesis Technology Usa, Inc. | Heat-dissipating EMI/RFI shield |
| US9462732B2 (en) | 2013-03-13 | 2016-10-04 | Laird Technologies, Inc. | Electromagnetic interference shielding (EMI) apparatus including a frame with drawn latching features |
| CN104768358A (en) * | 2014-12-25 | 2015-07-08 | 上海摩软通讯技术有限公司 | Shielding cover |
| CN106453710A (en) * | 2016-11-07 | 2017-02-22 | 努比亚技术有限公司 | A shielding assembly and a mobile terminal |
| TWI682707B (en) * | 2017-02-24 | 2020-01-11 | 緯創資通股份有限公司 | Assembling component and assembling method thereof |
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| CN2735730Y (en) * | 2004-09-16 | 2005-10-19 | 上海环达计算机科技有限公司 | Metallic shielding casing |
| EP1520457B1 (en) * | 2002-07-10 | 2006-05-03 | Siemens Aktiengesellschaft | Screening device for electronic subsassemblies on a printed circuit board |
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| US4759466A (en) * | 1986-08-14 | 1988-07-26 | Apple Computer, Inc. | EMI seam for enclosures |
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| EP1420623A1 (en) * | 2002-11-12 | 2004-05-19 | Thomson Licensing S.A. | Shield casing with heat sink for electric circuits |
| JP3941723B2 (en) * | 2003-03-27 | 2007-07-04 | 日本電気株式会社 | Electronic equipment casing |
| US6754988B1 (en) * | 2003-06-10 | 2004-06-29 | Joel F. Downey | Insect containment trap having disposable capture vessel and joining mechanism |
| TWI351918B (en) * | 2004-01-29 | 2011-11-01 | Laird Technologies Inc | Ultra-low height electromagnetic interference shie |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1520457B1 (en) * | 2002-07-10 | 2006-05-03 | Siemens Aktiengesellschaft | Screening device for electronic subsassemblies on a printed circuit board |
| EP1641074B1 (en) * | 2004-09-01 | 2007-02-14 | Alps Electric Co., Ltd. | Antenna device |
| CN2735730Y (en) * | 2004-09-16 | 2005-10-19 | 上海环达计算机科技有限公司 | Metallic shielding casing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101340806A (en) | 2009-01-07 |
| WO2009006838A1 (en) | 2009-01-15 |
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