CN202135443U

CN202135443U - Shield assembly

Info

Publication number: CN202135443U
Application number: CN201120185016U
Authority: CN
Inventors: 蔡友华
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2011-06-03
Filing date: 2011-06-03
Publication date: 2012-02-01
Anticipated expiration: 2021-06-03

Abstract

The utility model discloses a shield assembly, including a fixing member and a shield housing. The fixing member includes a substrate; two ends of the substrate are bended to the same side to form two projections; a clamping space is formed between the two projections; the shield housing possesses a side wall which is clamped on the fixing member; the side wall is concave to be provided with two concave grooves coupled the two projections by interference fit; a clamping portion is formed between the two concave grooves to be coupled to the clamping space by interference fit. In the utility model, the fixing member of the shield assembly can form two projections through the simple bending of the longitudinal elongated sheet material, and the usage material of the fixing member can be effectively saved; through the interference fit between the concave grooves and the projections provided on the side wall of the shield housing, a substrate is welded on a circuit board, then the shield housing is buckled on the fixing member elastically, and the fixation of the shield assembly and the circuit board can be realized to achieve the electromagnetic shield function to the electronic components arranged on the circuit board; the structure of the shield assembly is simple, the processing technology is effectively simplified, and the production cost is reduced.

Description

Shield assembly

[technical field]

The utility model relates to a kind of shield assembly, refers to a kind of being used for fixing to the shield assembly of a circuit board with the realization electromagnetic shielding especially.

[background technology]

Usually; Electronic equipment is when operation; Easily towards around exhale electromagnetic wave, electromagnetic wave can with electronic component (for example being installed in the semiconductor device on the printed circuit board (PCB) of electronic equipment internal) effect, produce interference phenomenon and make that these electronic components can not normal operation.Therefore, need go up at the matrix (being circuit board) of electronic component usually a shield assembly is installed, be capped electronic component and external electromagnetic wave transmission channel, eliminate electromagnetic adverse effect with cut-out.

Keep in repair and change electronic component long or that often need change in some useful lifes for ease; Shield assembly is made up of a shielding case and a fixture usually; Shielding case is installed on the circuit board through fixture; So structure makes shielding case to take out from circuit board, when needing repairing or change the electronic component in the shielding case, only needs shielding case taken out in the fixture and gets final product.The common a kind of fixture of industry; Form by plate stamping; Comprise a plurality of substrates and a plurality of fixed head, each said substrate connects adjacent said two fixed heads, and said fixed head is used for said geometrical clamp is fixed to said circuit board; Relative two sides from each said substrate bend the extension side plate respectively straight up; The end face of each said side plate upwards is bent to form a shell fragment, extend said two shell fragments that form in same said substrate and bend in opposite directions, and formation one plugs the space for plugging said shielding case between relative said two shell fragments.

The shield assembly of this structure; Because the said side plate of said fixture all extends to form from relative two lateral bucklings of said substrate, the extended width of said substrate of said side plate causes the width area after whole said fixture launches bigger; And consume material is more; And because after said substrate upwards was bent to form said side plate, the end face of said side plate upwards was bent to form said shell fragment again so that said shielding case is produced chucking power, its structure relative complex; Cause procedure of processing loaded down with trivial details, be unfavorable for reducing production costs.

Therefore, be necessary to design a kind of new shield assembly to address the above problem.

[utility model content]

The purpose of the utility model is to provide a kind of and is used for fixing to the shield assembly of a circuit board with the realization electromagnetic shielding, and it is simple in structure, helps simplified processing process, reduces production costs.

For realizing above-mentioned purpose, the utility model adopts following technical scheme:

A kind of shield assembly comprises: a fixture, and said fixture comprises a substrate, and two convexities that are bent to form towards the same side from said substrate two ends, is formed with one between said two convexities and holds the space; One shield shell, said shield shell have a sidewall and are sticked on the said fixture, and said sidewall is concaved with two grooves and said two protruding interference fit, are formed with a holding section and the said space interference fit that holds between said two grooves.

Compared with prior art; The fixture of the utility model shield assembly can be by longitudinal sheet material through simply being bent to form said two convexities; Can effectively practice thrift the fixture materials; Through on the said sidewall of said shield shell, offering said groove and the said interference fit that convexes to form, during use, only need the said substrate of said fixture is welded on the circuit board; Again said shield shell elasticity is fastened on the said fixture; Just can realize the fixing of said shield assembly and circuit board, effectively simplified processing process and reducing production costs to realize that its structure of the shield assembly of the utility model is very simple to being installed on the electro-magnetic screen function of the electronic component on the said circuit board.

[description of drawings]

Fig. 1 is the utility model shield assembly and circuit board separated structures sketch map;

Fig. 2 is fixed in the structural representation on the circuit board for the utility model shield assembly;

Fig. 3 is the structural representation of the fixture of the utility model shield assembly;

Fig. 4 separate with circuit board for the utility model shield assembly is fixing front view;

Fig. 5 is the front view that is fixed on the circuit board.

The drawing reference numeral explanation of embodiment:

Fixture	1	?	?	?	?
						Protruding	11	Substrate	12	Hold the space	13
The gap	14	Fixed head	15	Riser portions	111
						Falling portion	112	?	?	?	?
Shield shell	2	?	?	?	?
						Sidewall	20	End face	21	Groove	22
The holding section	23	Grooving	24	?	?
						Circuit board	3	?	?	?	?

[embodiment]

Purpose, structure, characteristic and effect etc. for ease of better understanding the utility model combine accompanying drawing and embodiment that the utility model is described further at present.

Like Fig. 1; Be the shield assembly of the utility model, comprise a fixture 1, and a shield shell 2; Said fixture 1 is fixedly welded on the circuit board 3; Said shield shell 2 is fixedly installed on the said circuit board 3 through said fixture 1, is installed on the electronic component (not shown) on the circuit board 3 and cuts off said electronic component and the external electromagnetic wave transmission channel with covering, eliminates electromagnetic adverse effect.

See figures.1.and.2, said shield shell 2 is processed by tin plate, and said shield shell 2 has integrated four sidewalls 20 and an end face 21, in order to cover said electronic component; Said sidewall 20 can engage be installed on be positioned at its below said fixture 1.Said shield shell 2 is installed on the said circuit board 3 through said fixture 1, and said shield shell 2 can separate from said circuit board 3 easily.

With reference to Fig. 3 to Fig. 5, said fixture 1 is formed through simple bending process by the uniform sheet metal of thickness.Said sheet metal has been bent to form two convexities 11 up, is a substrate 12 between said two protruding 11, and said substrate 12 is used to be fixedly welded on said circuit board 3.Certainly, said protruding 11 quantity also can be three or above (not shown).Be bent to form by sheet material owing to said protruding 11, thereby said protruding 11 can have certain elasticity.Said two protruding 11 lay respectively at the opposite end of said substrate 12, and are positioned on the same lengthwise line with said substrate 12, and said two protruding 11 are bent to form towards the same side, are formed with one between the two and hold space 13.Each said protruding 11 comprises from said substrate 12 1 ends bending one riser portions 111 of extending upwards; An and falling portion 112 that is bent to form downwards from said riser portions 111; Said riser portions 111 rounding ofves to said falling portion 112, and be formed with a gap 14 between the two.Distance between said riser portions 111 and the said falling portion 112 is wide at the top and narrow at the bottom, because the thickness of said sheet metal is even, thereby said gap 14 equally also can be wide at the top and narrow at the bottom.Extend a fixed head 15 from said falling portion 112 terminal bendings, said fixed head 15 is positioned on the same horizontal plane with said substrate 12, and is positioned on the same lengthwise line.Said fixed head 15 is identical with said substrate 12 effects, is used to be fixedly welded on said circuit board 3.

With reference to Fig. 4 to Fig. 5; Said sidewall 20 upwards is concaved with two grooves 22 from the bottom corresponding with said two protruding 11; The shape of said groove 22 and said protruding 11 shape are roughly coincide, and are the ultimate range between said riser portions 111 and the said falling portion 112 but the width of said groove 22 is slightly less than said protruding 11 width.Be formed with a holding section 23 between said two grooves 22; The shape of said holding section 23 and the said shape that holds space 13 are roughly coincide; But the said width that holds space 13 is slightly less than the width of said holding section 23, makes said holding section 23 to form interference engagement with the said space 13 that holds.For strengthening the elasticity of said holding section 23, the medium position place of said holding section 23 offers a grooving 24 straight up from the bottom.

With reference to Fig. 4 and Fig. 5, the shield assembly of the utility model, during assembling, existing said substrate 12 and said fixed head 15 with four said fixtures 1 is fixedly welded on the said circuit board 3 position of four said sidewalls 20 of corresponding said shield shell 2; Get said shield shell 2 again; The said groove of said sidewall 20 22 is aimed at said protruding 11, said holding section 23 aim at the said space 13 that holds; Said shield shell 2 is applied a downward strength; Make said two protruding 11 to get into the said upper surface that holds in the space 13 and be connected to said substrate 12 of said two grooves, 22 interior, said holding sections 23 entering, this moment is because said two convexities 11 have elasticity, thereby said two convexities 11 can form interference fit with said two grooves 22; Same reason; Because said holding section 23 has elasticity, said holding section 23 also can form interference fit with the said space 13 that holds, and said two protruding 11 produce clamping action to said holding section 23 jointly.Through this structure, whole said sidewall 20 is sticked on the said fixture 1 securely, thereby whole shield assembly can be securely in place on the said circuit board 3, realizes the electro-magnetic screen function to the electronic component that is mounted thereon.

Compared with prior art, the utlity model has following beneficial effect:

1. because said fixture 1 can be by longitudinal sheet material through simply being bent to form said two protruding 11; Can effectively practice thrift fixture 1 materials; Form interference fit through on the said sidewall 20 of said shield shell 2, offering said groove 22 with said protruding 11; During use; Only need the said substrate 12 of said fixture 1 is welded on the circuit board 3, more said shield shell 2 elasticity are fastened on the said fixture 1, just can realize the fixing of said shield assembly and said circuit board 3 to realize to being installed on the electro-magnetic screen function of the electronic component on the said circuit board 3; Its structure of the shield assembly of the utility model is very simple, effectively simplified processing process and reducing production costs.

2. because said riser portions 111 rounding ofves to said falling portion 112; Thereby said protruding 11 join when getting into said groove 22 at card; Can scratch or damage the said sidewall 20 of said shield shell 2; Can guarantee simultaneously said protruding 11 and said groove 22 closely cooperate in shape, make it to engage more reliable.

3. owing to be formed with a gap 14 between said riser portions 111 and the said falling portion 112, and the two distance is wide at the top and narrow at the bottom, thereby said protruding 11 can have favorable elasticity, can with said groove 22 interference engagement, and closely be fastened in the said groove 22.

4. because said holding section 23 offers said grooving 24 from the bottom; Thereby the elasticity of said holding section 23 can strengthen; Said holding section 23 interference fit hold in the space 13 in said; Said two protruding 11 produce chucking power to said holding section 23 jointly, thereby said sidewall 20 firmly is fastened in the said keeper.

More than specify the explanation of the preferred embodiment that is merely the utility model; Non-thus the limitation the utility model claim; So the equivalence techniques that all this creation of utilization specifications and diagramatic content are done changes, and all is contained in the claim of the utility model.

Claims

1. a shield assembly is characterized in that, comprising:

One fixture, said fixture comprises a substrate, and two convexities that are bent to form towards the same side from said substrate two ends, is formed with one between said two convexities and holds the space;

One shield shell, said shield shell have a sidewall and are sticked on the said fixture, and said sidewall is concaved with two grooves and said two protruding interference fit, are formed with a holding section and the said space interference fit that holds between said two grooves.

2. shield assembly as claimed in claim 1 is characterized in that: said two convexities are bent to form respectively from the opposite end of said substrate, and are positioned on the same lengthwise line with said substrate.

3. shield assembly as claimed in claim 1; It is characterized in that: said convexity comprises a riser portions that upwards bends from said substrate one end; And a falling portion that is bent to form downwards from said riser portions, rounding off between said riser portions and the said falling portion.

4. shield assembly as claimed in claim 3 is characterized in that: be formed with a gap between said riser portions and the said falling portion.

5. shield assembly as claimed in claim 3 is characterized in that: the distance between said riser portions and the said falling portion is wide at the top and narrow at the bottom.

6. shield assembly as claimed in claim 3 is characterized in that: extend a fixed head from the terminal bending of said falling portion.

7. shield assembly as claimed in claim 6 is characterized in that: said fixed head and said substrate are positioned on the same horizontal plane.

8. shield assembly as claimed in claim 6 is characterized in that: said fixed head and said substrate are positioned on the same lengthwise line.

9. shield assembly as claimed in claim 1 is characterized in that: said holding section upwards offers a grooving from the bottom.

10. shield assembly as claimed in claim 9 is characterized in that: said grooving is for offer straight up.