CN2768390Y

CN2768390Y - Electromagnetic shielding device

Info

Publication number: CN2768390Y
Application number: CN 200520000513
Authority: CN
Inventors: 陈荣达; 郭文杰
Original assignee: E Ten Information Systems Co Ltd
Current assignee: E Ten Information Systems Co Ltd
Priority date: 2005-01-07
Filing date: 2005-01-07
Publication date: 2006-03-29
Anticipated expiration: 2015-01-07

Abstract

The utility model relates to an electromagnetic shielding device. The electromagnetic shielding device comprises a frame body and a fixing bracket, wherein the frame body is made of conductive metal and welded on a circuit circumference and an electronic assembly in an electronic device, the electronic assembly needs to be shielded, and the frame body is electrically conducted with a grounding surface on a main circuit board; the fixing bracket is made of the conductive metal, an LCD screen is assembled and positioned on the surface of the fixing bracket, lower surface of the fixing support corresponds to the frame body and can be completely covered on the frame body in order to form a closed space between the frame body and the surface of main circuit board covered by the fixing bracket, and the frame body is tightly contacted and electrically conducted with the surface of the frame body. High-frequency noise and electromagnetic waves generated by an electronic assembly circuits, etc. surrounded by the frame body on the main circuit board can be effectively closed and isolated in the closed space formed by the frame body and the surface of the fixing bracket via the combination in order to obtain the effect of shielding and isolating the high-frequency noise and the electromagnetic waves.

Description

The ELECTROMAGNETIC OBSCURANT device

Technical field

The utility model belongs to a kind of ELECTROMAGNETIC OBSCURANT device, refers to a kind of portable electric appts that is applied to especially, in order to cover and to intercept the ELECTROMAGNETIC OBSCURANT device of the high-frequency noise that electronic building brick on its internal circuit plate and circuit produced when the running.

Background technology

Continuous lifting development along with telecommunications science and technology, occur at present various on the market for the individual portable items of electronic of carrying and using, so that provide the user to can be used as the management of personal information, mobile phone communication, all functions such as two-way call and wireless network online, especially extremely pay attention in the industrial and commercial society of efficient and speed at this, by this type of powerful portable type electronic product with the public affair things in the trifling affairs of real-time processing daily life or the work, accepted by the modern gradually, and this series products carrying for the ease of the consumer, and meet the demand of consumer on function of use, designing towards compact in appearance of product, on product content, then provide diversified function to use and use as much as possible, go up most of consumer demand to meet society.Be with, in the design of Related product, just must improve operational capability and memory size, therefore often need to carry out high-speed computing work at the inner set electronic building brick of this class of electronic devices, and also can produce many high-frequency electromagnetism involves the excessive of noise relatively in its calculating process, and then influence and interfere with the running of other electronic building brick, for solve this electronic product when operation the problem of the frequency electromagnetic waves noise jamming that may produce, see also shown in Figure 1, for commonly using the perspective exploded view of electronic equipment internal ELECTROMAGNETIC OBSCURANT device.

At present for solving the problem that the electronic equipment internal high-frequency noise disturbs, its method is to be easy to generate electromagnetic waves on the main circuit board 30 ' surface of electronic equipment internal and the electronic building brick of high-frequency noise or near circuit zone it, setting is covered on this electronic building brick and near circuit zone with a metal mask 10 ', and metal mask 10 ' is connected to earth terminal on the main circuit board 30 ', to reach the interference of isolating and getting rid of electromagnetic noise, the set LCD Panel 40 ' of this electronic equipment internal in addition, then be to be assembled on the main circuit board 30 ' by a stationary barrier 20 ', and stationary barrier 20 ' generally is made by the tool conductive metal, and be stacked and placed on the metal mask 10 ' surface, after making that LCD Panel 40 ' assembling is positioned stationary barrier 20 ' surface, also can produce the effect of covering and intercepting by stationary barrier 20 ' simultaneously, exert an influence for other electronic building brick on the main circuit board 30 ' to prevent the high-frequency noise that display panels 40 ' is produced.

Commonly use electronic equipment except covering metal mask 10 ' on every side at obstruct of institute's desire and the electronic building brick that covers and circuit on the main circuit board 30 ', in addition for reaching the purpose of assembling LCD Panel 40 ', still can between main circuit board 30 ' surface and LCD Panel 40 ', stationary barrier 20 ' be set, in order to location and assembling LCD Panel 40 ', but because metal mask 10 ' and stationary barrier 20 ' all have the effect of isolating high-frequency noise, the result that it repeats to be provided with has often also caused the increase on the manufacturing cost relatively on making; Moreover, commonly use electronic equipment and be and reach the purpose of covering high-frequency noise and metal mask 10 ' is set on main circuit board 30 ', but further cause main circuit board 30 ' to go up the puzzlement of electronic building brick when keeping in repair, after making that the maintenance personal must disassemble metal mask 10 ' earlier, can detect and repair at covering in metal mask 10 ' inner electronic building brick.

The utility model content

Main purpose of the present utility model is to provide a kind of ELECTROMAGNETIC OBSCURANT device, in order under the prerequisite of saving the electronic equipment assembly cost, still can reach the effect of isolating and covering high-frequency noise.

Another purpose of the present utility model is to provide a kind of ELECTROMAGNETIC OBSCURANT device, by the structure of simplification ELECTROMAGNETIC OBSCURANT device, and helps the program that the maintenance personal keeps in repair electronic building brick on the main circuit board.

For reaching above-mentioned purpose, the utility model mainly is that an ELECTROMAGNETIC OBSCURANT device is set on the main circuit board of electronic equipment internal, this ELECTROMAGNETIC OBSCURANT device includes a framework and a fixed support, wherein this framework is made by the metal of tool conductivity, and be welded in electronic building brick and the circuit periphery desiring to cover on the main circuit board of electronic equipment internal, and be and electrically conduct with ground plane on the main circuit board; This fixed support is made by the metal of tool conductivity equally, its upper surface place provides LCD Panel assembling location its surface, this fixed support lower surface place corresponds to framework and is covered on the framework fully, so that the main circuit board surface that framework and fixed support are coated is an enclosure space, and is closely to contact and be with the framework surface and electrically conducts; By above-mentioned combination, make on the main circuit board by electronic building brick that framework centered on and circuit etc., high-frequency noise that is produced and electromagnetic wave can be closed effectively and be isolated from framework and the formed enclosure space of fixed support, reach to cover and isolate high-frequency noise and electromagnetic effect; And because framework central authorities are an Openworks shape, thus can be easy to detect and keep in repair at electronic building brick that is arranged at framework inside and circuit, and do not need dismounting framework in advance, reach the purpose of simplifying construction procedure.

Description of drawings

Fig. 1 is a perspective exploded view of commonly using electronic equipment internal ELECTROMAGNETIC OBSCURANT device.

Fig. 2 is the perspective exploded view of the utility model ELECTROMAGNETIC OBSCURANT device preferred embodiment.

Fig. 3 is the three-dimensional combination figure of the utility model ELECTROMAGNETIC OBSCURANT device preferred embodiment.

Fig. 4 is the schematic perspective view of another embodiment of framework of the present utility model.

Schematic perspective view when Fig. 5 is the fixed support of the utility model preferred embodiment and framework and main circuit board combination.

Fig. 6 is the schematic appearance of the applied electronic equipment of the utility model.

10 ' metal mask, 20 ' stationary barrier

30 ' main circuit board, 40 ' LCD Panel

1 ELECTROMAGNETIC OBSCURANT device, 10 frameworks

12 chimbs, 14 sidewalls

142 pins, 16 ribs

162 joint faces, 20 fixed supports

22 fixed hole seats, 222 through holes

24 first chimbs, 26 second chimbs

30 main circuit boards, 32 location holes

34 perforation, 36 location notch holes

38 electronic building bricks, 40 LCD Panel

50 electronic equipments

Embodiment

Please consult Fig. 2 and shown in Figure 3 respectively, be the perspective exploded view and the constitutional diagram of the utility model ELECTROMAGNETIC OBSCURANT device preferred embodiment.As shown in the figure, the utility model mainly is to be applied in inside to have on electronic equipment 50 products of LCD Panel setting, as shown in Figure 6, is the schematic appearance of the applied electronic equipment of the utility model.50 of this electronic equipments can be made a general reference electronic equipment 50 products of needs installing LCD Panel such as general personal digital assistant device (PDA), mobile phone, intelligent mobile phone (PPC), stock handset or e-dictionary.ELECTROMAGNETIC OBSCURANT device 1 of the present utility model consists predominantly of a framework 10 and a fixed support 20, and wherein framework 10 is made by the metal of tool conductivity, and comprise one around chimb 12, and the side-lower vertical extent is provided with a sidewall 14 outside chimb 12.This framework 10 is electronic building brick 38 and circuit peripheries of desiring to cover on the main circuit board 30 in order to be arranged at, with electronic building brick 38 and circuit part around being located among the framework 10, and framework 10 to be modes with welding be positioned on main circuit board 30 surfaces, and be and electrically conduct with ground plane on the main circuit board 30.In addition for making framework 10 be easy to be positioned on main circuit board 30 surfaces, the sidewall 14 lower edge places of framework 10 extension in addition are provided with a plurality of pins 142, and on main circuit board 30 surfaces, be equipped with respect to each pin 142 position a location hole 32 or one the location slotted eye 36, can plant for each pin 142 is positioned location hole 32 or location notch hole 36 inside, is beneficial to the speed that framework 10 is assembled in main circuit board 30 lip-deep positions and assembling.

Please consult simultaneously in addition shown in Figure 5, the schematic perspective view for the fixed support 20 of the utility model preferred embodiment and framework 10 during with main circuit board 30 combinations.This fixed support 20 is made by the metal of tool conductivity equally, its upper surface place can provide a LCD Panel 40 assemblings to locate on it, and fixed support 20 lower surface places correspond to framework 10 and are covered in fully on the framework 10, so that framework 10 is an enclosure space with main circuit board 30 surfaces that fixed support 20 is coated, and touches with framework 10 surperficial close proximity and be and electrically conduct.Fixed support 20 peripheries are provided with a plurality of fixed hole seats 22 with a through hole 222 in addition, and a corresponding perforation 34 is set on main circuit board 30, make fixed support 20 can by a plurality of fixation kits (not icon) via the through hole 222 of fixed hole seat 22 with the solid locate mode of buckle or spiral shell in perforation 34, with this fixed support 20 is fixed on main circuit board 30 surfaces.The surface periphery that is positioned at fixed support 20 again bends upward respectively and is provided with a plurality of first chimbs 24, make LCD Panel 40 be positioned the fixed support 20 surface location places that first chimb 24 is centered on, then bend equally downwards at fixed support 20 surface periphery places in addition and be provided with a plurality of second chimbs 26, make when fixed support 20 is mounted on these framework 10 surperficial going up, second chimb 26 can be detained and be butted on framework 10 peripheral surface places, to reach the effectiveness that is positioned on the framework 10.

As shown in the above description, because framework 10 of the present utility model and 20 of fixed supports are to be bonded with each other in tight mode to form, and ground plane on main circuit board 30 all can electrically conduct, so be positioned on this main circuit board 30 by electronic building brick 38 that framework 10 centered on and circuit etc., still can be closed in effectively in framework 10 and the fixed support 20 formed enclosure spaces, reach and cover and isolate high-frequency noise and electromagnetic effect; Moreover, because the utility model is will be originally to need the electronic building brick 38 that covers by the metal mask and circuit to change with framework 10 replacements, not only can save production cost, and because framework 10 central authorities are hollow out opening shape, so also can be easy to the maintenance of internal electrical components 38, and do not need to dismantle in advance framework 10, simplify the program of construction.

At last, see also shown in Figure 4ly, be the schematic perspective view of framework 10 another embodiment of the present utility model.As shown in the figure, the utility model can connect setting in addition with at least one ribs 16 between framework 10 corresponding both sides chimbs 12, and protrude out a joint face 162 is set being bordering on these ribs 16 center edge places, setting by this joint face 162, so that when framework 10 is desired to be assembled on the main circuit board 30, can make the processing jig on the automatic assembly line, utilize adsorption tool such as sucker to be adsorbed on this joint face 162, process after framework 10 moves to the tram to drive.

Only the above, it only is a preferred embodiment of the present utility model, be not to be used for limiting the scope that the utility model is implemented, such as the equalization of doing according to the described shape of the utility model application right claimed range, structure, feature and spirit changes and modifies, and all should be included in the application right claimed range of the present utility model.

Claims

1. ELECTROMAGNETIC OBSCURANT device has on the main circuit board of electronic equipment internal of a LCD Panel for being arranged at one, it is characterized in that this ELECTROMAGNETIC OBSCURANT device comprises:

One framework is made by conductive material, and it is arranged at electronic building brick and the circuit periphery of desiring to cover on this main circuit board, and forms an opening in this electronic building brick and circuit top, and electrically conducts with a ground plane on this main circuit board; And

One fixed support, make by conductive material, its upper surface feed flow crystal display screen assembling location, lower surface then is covered in framework, so that the main circuit board surface that framework and fixed support are coated is an enclosure space, this lower surface also contacts with framework surface and is and electrically conducts.

2. ELECTROMAGNETIC OBSCURANT device as claimed in claim 1 is characterized in that, wherein framework have one around chimb, and side-lower extends and to be provided with a sidewall outside chimb.

3. ELECTROMAGNETIC OBSCURANT device as claimed in claim 2, it is characterized in that, wherein the extension of the sidewall lower edge place of framework is provided with a plurality of pins, and on the main circuit board surface of each pin position of correspond to, be equipped with arbitrary combination in a location hole and the location notch hole, so that pin is planted in it.

4. ELECTROMAGNETIC OBSCURANT device as claimed in claim 1, it is characterized in that, wherein the fixed support periphery is provided with a plurality of fixed hole seats, and the opposite position place is provided with a perforation on main circuit board, make fixed support can pass through a plurality of fixation kits, be fixedly arranged on perforation via fixed hole seat inner, with this fixed support is fixed on the main circuit board surface.

5. ELECTROMAGNETIC OBSCURANT device as claimed in claim 1 is characterized in that, wherein support bracket fastened surface periphery bends upward and is provided with a plurality of first chimbs, can make LCD Panel be positioned the fixed support surface location place that first chimb is centered on this.

6. ELECTROMAGNETIC OBSCURANT device as claimed in claim 1, it is characterized in that, wherein fixed support surface periphery place bends downwards and is provided with a plurality of second chimbs, make when fixed support is mounted on the framework surface, second chimb can be detained and be butted on framework peripheral surface place, and fixed support correctly is positioned on the framework.

7. ELECTROMAGNETIC OBSCURANT device as claimed in claim 1 is characterized in that, wherein is connected with at least one ribs between the chimb of both sides, and protrudes out a joint face is set approaching ribs center edge place.