CN201898692U

CN201898692U - Shielding case and terminal

Info

Publication number: CN201898692U
Application number: CN201020617826XU
Authority: CN
Inventors: 詹谷; 王立东; 樊起飞
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd; Dongguan Yulong Telecommunication Technology Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd; Dongguan Yulong Telecommunication Technology Co Ltd
Priority date: 2010-11-22
Filing date: 2010-11-22
Publication date: 2011-07-13
Anticipated expiration: 2020-11-22

Abstract

The utility model relates to a shielding case, which comprises a metal shielding cover, a plastic framework and an elastic contact body. The metal shielding cover is provided with a first surface and a second surface corresponding to the first surface, the plastic framework is arranged on the first surface of the metal shielding cover, the elastic contact body is arranged on the plastic framework, and conductive films in mutual conduction are arranged on the surfaces of both the metal shielding cover and the plastic framework. The utility model further relates to a terminal. Due to the adoption of an integrated structure of the metal shielding cover and the plastic framework, the shielding case provided by the utility model has high strength and can provide a favorable structural support, moreover, the metal shielding cover and the plastic framework have the characteristics of simpleness in processing, easiness in shaping, and capabilities of reducing structural thickness, improving the production quality, being manufactured into various complicated structures and reducing both the material cost and the processing cost.

Description

A kind of radome and terminal

Technical field

The utility model relates to a kind of radome and terminal.

Background technology

In electric terminal equipment,, often use radome and shield for the electromagnetic interference between the electronic component that prevents each several part.Existing radome roughly can be divided into four kinds on structure: the bottom of first kind of radome is the SMT mask frame, and surface layer is a screening cover; Second kind of SMT radome that radome is an individual layer; The third radome is to stamp out the radome main body with the stainless steel sheet material earlier, and laser spot welding ground connection thorn on the radome main body stings and the mainboard Elastic Contact by ground then; The 4th kind of radome is the agent structure that goes out radome earlier with alloy material die casting, and conductive adhesive tape on point is by conductive adhesive tape and mainboard Elastic Contact.More than four kinds of radomes certain defective is all arranged, wherein first kind and second kind of radome directly are welded on the circuit board by the mode of SMT, be suitable for and do not need the circuit reprocessed substantially, its size is generally smaller, and can not be as strong support structure, be difficult in and design screw column, button bit on the radome, and other some labyrinths.The third radome is compared with second kind with first kind, owing to adopt stainless steel to be stamped to form, structural strength is greatly improved, and can be used as more intense support structure, but is difficult to make complicated structure, therefore is difficult to other structures take place three-dimensional the cooperation.The 4th kind of radome is for first three kind, structural strength is good, and can design complicated structure so that form three-dimensional the cooperation with other structures according to the needs of product, but owing to adopt the alloy die cast moulding, required die cast metal mould structure complexity, matching and versatility are bad, and fabrication cycle is long, and the conductive paint and the conductive adhesive tape on surface come off easily, quality stability is poor, and the material cost of alloy material is higher in addition, causes the product cost height.

The utility model content

The technical problems to be solved in the utility model is, at the above-mentioned intensity difference of the radome of prior art, be difficult to process defectives such as labyrinth, cost height, provide that a kind of structural strength is good, processing simply, radome cheaply.

The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of radome, comprise metallic shield lid, plastic frame and Elastic Contact body; Described metallic shield lid have first surface and with the first surface opposing second surface, described plastic frame is arranged on the first surface of described metallic shield lid, described Elastic Contact body is arranged on the described plastic frame, and the surface of described metallic shield lid and described plastic frame is provided with the conducting film of mutual conduction.

In radome described in the utility model, described plastic frame comprises that at least one is arranged on the plastic strip on the described metallic shield lid first surface, and described plastic strip surrounds several relatively independent zones on described metallic shield lid first surface.

In radome described in the utility model, have breach on the described plastic strip.

In radome described in the utility model, described metallic shield covers and is provided with several through holes over against described plastic strip, have reinforcing prop in the described through hole, when described plastic strip was arranged on the first surface of described metallic shield lid, described reinforcing prop and described plastic strip were connected as a single entity.

In radome described in the utility model, the opening part that is positioned at described second surface of described through hole is provided with chamfering.

In radome described in the utility model, described through hole is a shoulder hole, and described through hole is positioned at the diameter of opening of described second surface greater than the diameter of the opening that is positioned at first surface.

In radome described in the utility model, the edge of described metallic shield lid has the flanging to described second surface one rollover folding.

In radome described in the utility model, described plastic frame is provided with button bit, screw column or reinforcement.

In radome described in the utility model, described Elastic Contact body has the matrix that is formed by the elastic sheet metal punching press, described matrix has " U " shape holding tank adaptive with plastic frame, has several elastic contact chips that formed by the matrix punching press on the described matrix.

The utility model also discloses a kind of terminal, on its surface and/or inside be provided with above-mentioned radome.

Implement radome of the present utility model, has following beneficial effect: in radome of the present utility model, adopt metallic shield lid and plastic frame structure combining, the intensity height, good support structure can be provided, and the processing of metallic shield lid and plastic frame is simple, and moulding easily can reduce structural thickness, improve the quality of product, can produce the structure of various complexity, both can reduce material cost, also can cut down finished cost.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the decomposing schematic representation of the preferred embodiment of radome of the present utility model;

Fig. 2 is the schematic diagram of the preferred embodiment of radome of the present utility model when the Elastic Contact body is not installed;

Fig. 3 is the schematic diagram of the preferred embodiment of radome of the present utility model;

Fig. 4 is the schematic diagram of another angle of the preferred embodiment of radome of the present utility model;

Fig. 5 is the enlarged diagram of elasticity contact in the preferred embodiment of radome of the present utility model;

Fig. 6 is an A-A partial sectional view among Fig. 4;

Fig. 7 is the cutaway view of the local another kind of structure of A-A among Fig. 4.

Embodiment

Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.

As shown in Figures 1 to 4, be a preferred embodiment of radome of the present utility model, this radome comprises metallic shield lid 100, plastic frame 200, and Elastic Contact body 300.Plastic frame 200 is arranged on the screening cover 100, the surface of metallic shield lid 100 and plastic frame 200 is provided with the conducting film of mutual conduction, Elastic Contact body 300 is a conductor, Elastic Contact body 300 is arranged on the plastic frame 200, be used for keeping Elastic Contact with circuit board and keeping conducting, to realize function of shielding.Following mask body is introduced the structure of each several part.

Metallic shield lid 100 can be stamped to form by high strength metal sheets such as stainless steel, hard ocean copper-nickel alloy, hard aluminium alloys, considers preferred stainless steel sheet material from material price and intensity aspect.Metallic shield lid 100 have first surface 110 and with first surface opposing second surface 120, first surface 110 and second surface 120 can be the planes, also punching press according to actual needs has depression or projection.Further, in order to strengthen the intensity of radome, can cover 100 edge formation flanging in metallic shield, in the present embodiment, the edge of metallic shield lid 100 has the flanging 101 to second surface 120 1 rollover foldings, and flanging 101 is except strengthening structure, can also use as the location of miscellaneous part, for example in the present embodiment, flanging 101 surrounds a space of placing display screen, is used to be provided with display screen.

Plastic frame 200 is arranged on the first surface 110 of metallic shield lid 100, plastic frame 200 is that the mode by in-mould injection is molded on the metallic shield lid 100, specifically be that the lid of the metallic shield after the punch forming 100 is put into mould, then by the injection molding machine injection mo(u)lding, on the first surface 110 of metallic shield lid 100, form plastic frame 200, this processing mode technology is simple, and has guaranteed that plastic frame 200 and metallic shield 100 combine closely.Plastic frame 200 is surrounded by some plastic strips 210, these plastic strips 210 are divided into several relatively independent zones with first surface 110, be divided into four distinct area in the present embodiment, in the reality, position that each is regional and shape can design according to the position of components and the shape of the circuit board that will shield.Because the shrinkage when variations in temperature of plastic cement and metal material is inconsistent, contraction distortion when preventing injection moulding, have breach 211 on the plastic strip 210, what of breach 211 can be provided with according to the length of plastic strip 210, and the breach of the setting that length is grown is many more.For the structure that makes radome more compact, plastic strip 210 narrow more good more, after but plastic strip 210 narrows down, plastic strip 210 covers 100 bonding areas with metallic shield and will diminish, in order to prevent coming off of plastic strip 210, on metallic shield lid 100, have several through holes 130 over against plastic frame 200, during in-mould injection, plastic cement can be filled these through holes 130, form reinforcing prop 220 at through hole 130, reinforcing prop 220 is connected as a single entity with plastic strip 210, can strengthen the adhesive force between plastic strip 210 and the metallic shield lid 100; Referring to Fig. 6, further, the opening part that through hole 130 can be positioned at second surface 120 is provided with chamfering 131, and it is spacing mutually that reinforcing prop 220 has the chamfering 131 of the structure of back taper and through hole 130 like this, can effectively prevent coming off of plastic strip 210.Referring to Fig. 7, through hole 130 also can be arranged to the shape of shoulder hole, through hole 130 is positioned at the diameter of opening of second surface 120 greater than the diameter of the opening that is positioned at first surface 110, and reinforcing prop 220 is stair-stepping structure like this, also can effectively prevent coming off of plastic strip 210.Radome forms three-dimensional the cooperation with other structures for convenience, and button bit 201 and screw column 202 can be set on plastic frame 200.Screw column 202 can be a blind hole, radome can be fixed on the circuit board by cooperating with tapping screw, and screw column 202 is set in the nut in the plastic frame in the time of also can being in-mould injection.The effect that button bit 201 and screw column 202 radomes can play the location, be connected with miscellaneous part during with other respective outer side edges.Plastic frame 200 adopts injection mo(u)lding, the structure that can design various complexity forms three-dimensional the cooperation with auxiliary rafter radome and miscellaneous part, except above-mentioned button bit and screw column, can also be labyrinths such as reinforcement, this is for the plastic parts of injection mo(u)lding, be very easy to realize that with respect to existing other mode radomes, radome of the present utility model has remarkable advantages.

After the surperficial injection mo(u)lding plastic frame 200 of metallic shield lid 100, need carry out surface treatment to the two, on the surface of metallic shield lid 100 and plastic frame 200, form conducting film, and the two lip-deep conducting film need keep good conducting, concrete way is, can on the two surface, form metal conductive film by modes such as plating, vacuum platings, perhaps adopt the mode of spraying conductive paint to form conducting film on the two surface, or and other any suitable modes on the two surface, form conducting film.The lip-deep conducting film of metallic shield lid 100 and plastic frame 200 surrounds shielding cavity, this shielding cavity cover on the circuit board the time, can play the effect of electromagnetic shielding to the electronic component of cover part, can prevent that outside electromagnetic radiation from entering into radome inside, also can prevent that institute from cover the electromagnetic radiation of electronic component generation partly and leaking simultaneously.

In order to make radome and circuit board keep good conducting, also Elastic Contact body 300 need be set on plastic frame, referring to Fig. 5, in the present embodiment, Elastic Contact body 300 is stamped to form by elastic sheet metal.Concrete, Elastic Contact body 300 has by elastic sheet metal and is stamped to form matrix 310, matrix 310 has adaptive " U " shape holding tank 312 of plastic strip 210 of plastic frame 200, matrix 310 is stuck on the plastic strip 210 of plastic frame 200 by " U " shape holding tank 312, and matrix 310 has the elastic contact chip 311 that is formed by matrix 310 punching presses.When radome is fixed on the mainboard, elastic contact chip 311 is crushed on the mainboard, because these elastic contact chips 311 have bigger deformation space, can guarantee that radome and circuit board keep excellent contact and conduct, with respect to the mode that adopts the conductive adhesive tape maintenance with the mainboard conducting, elastic sheet metal 311 has bigger deflection, and because Elastic Contact body 300 is stuck in plastic frame 200, also is not easy to come off.Because elastic contact chip 311 contacts conducting with mainboard, do not need and the mainboard welding, when needing repairing, can take off easily, the radome with respect to adopting welding with the mainboard conducting keeps in repair more convenient.It will be appreciated that Elastic Contact body 300 is not limited to above-mentioned concrete structure, also can be the conductive adhesive tape of point on plastic frame, can play the effect of good contact equally.

It will be appreciated that, in the present embodiment, plastic frame 200 is arranged on the metallic shield lid 100 by the form of in-mould injection, but the utility model is not limited to said structure, in the reality, also can adopt the independent injection mo(u)lding of plastic frame, the mode by hot melt or bonding is arranged on metallic shield and covers then.

Radome of the present utility model is fit to various electric terminal equipments, for example the electromagnetic interference shield between the surperficial and/or inner electronic component of mobile phone, PDA, panel computer or the like.

In radome of the present utility model, adopt metallic shield lid and plastic frame structure combining, the intensity height can provide good support structure, and the processing of metallic shield lid and plastic frame is simple, moulding easily, can reduce structural thickness, improve the quality of product, can produce the structure of various complexity, both can reduce material cost, also can cut down finished cost.

In conjunction with the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the present utility model.

Claims

1. a radome is characterized in that, comprises metallic shield lid, plastic frame and Elastic Contact body; Described metallic shield lid have first surface and with the first surface opposing second surface, described plastic frame is arranged on the first surface of described metallic shield lid, described Elastic Contact body is arranged on the described plastic frame, and the surface of described metallic shield lid and described plastic frame is provided with the conducting film of mutual conduction.

2. radome according to claim 1, it is characterized in that, described plastic frame comprises that at least one is arranged on the plastic strip on the described metallic shield lid first surface, and described plastic strip surrounds several relatively independent zones on described metallic shield lid first surface.

3. radome according to claim 2 is characterized in that, has breach on the described plastic strip.

4. radome according to claim 2, it is characterized in that, described metallic shield covers and is provided with several through holes over against described plastic strip, has reinforcing prop in the described through hole, when described plastic strip was arranged on the first surface of described metallic shield lid, described reinforcing prop and described plastic strip were connected as a single entity.

5. radome according to claim 4 is characterized in that, the opening part that is positioned at described second surface of described through hole is provided with chamfering.

6. radome according to claim 4 is characterized in that, described through hole is a shoulder hole, and described through hole is positioned at the diameter of opening of described second surface greater than the diameter of the opening that is positioned at first surface.

7. radome according to claim 1 is characterized in that, the edge of described metallic shield lid has the flanging to described second surface one rollover folding.

8. radome according to claim 1 is characterized in that described plastic frame is provided with button bit, screw column or reinforcement.

9. according to each described radome of claim 1 to 8, it is characterized in that, described Elastic Contact body has the matrix that is formed by the elastic sheet metal punching press, described matrix has " U " shape holding tank adaptive with plastic frame, has several elastic contact chips that formed by the matrix punching press on the described matrix.

10. a terminal is characterized in that, described terminal end surface and/or inside are provided with as each described radome of claim 1 to 9.