CN2877210Y

CN2877210Y - Screening cover structure for preventing electromagnetic interference

Info

Publication number: CN2877210Y
Application number: CN 200520127100
Authority: CN
Inventors: 洪进富
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-29
Filing date: 2005-09-29
Publication date: 2007-03-07
Anticipated expiration: 2015-09-29

Abstract

The utility model discloses a shielding hood capable of preventing electromagnetic interference (EMI). The shielding hood is provided with a hood body equipped with an accommodation space for accommodating electronic components, frame-like pre-breakage lines disposed on the top and adjacent to periphery of the hood body, at least one hole arranged on the top of the hood body and used for dismounting the hood body via a sharp tool, and a cover plate capable of being uncovered and arranged on the top of the hood body to form a shielding hood. The shielding hood can cover outside the electronic component mounted on circuit board to shield electromagnetic wave and prevent EMI. Design of the utility model can lower cost greatly.

Description

Anti-electromagnetic interference mask structure

Technical field

The utility model relates to a kind of anti-electromagnetic interference mask structure, and relating in particular to a kind ofly can provide electromagnetic shielding effect in order to be covered in the electronic building brick outside, and the mask structure that can reduce cost.

Background technology

In order to prevent that Electromagnetic Interference (EMI) from having influence on chip, the running of electronic building bricks such as central processing unit, existing on the market a kind of mask (as Fig. 1) in order to prevent electromagnetic interference, this mask 7 includes a lower cover 71 and a loam cake 72, this lower cover 71 is the frame type, this loam cake 72 is a plate body corresponding to lower cover 71, this loam cake 72 is fixed in lower cover 71 tops, with the mask 7 of forming a hollow form, and can be covered in electronic building brick 9 outsides that are installed on the circuit board 8, this mask 7 and suitable being fixed on the circuit board 8, thereby can provide electromagnetic shielding effect by this mask 7, have influence on the running of electronic building brick 9 to prevent Electromagnetic Interference.

Yet above-mentioned existing mask 7 is a two part, and its lower cover 71 and loam cake 72 are all metal towards part, all need mould molding, so its manufacturing cost is higher.

So as from the foregoing, above-mentioned existing mask structure on reality is used, obviously has inconvenience and exists with disappearance, and can wait to be improved.

Therefore, the improving of the above-mentioned disappearance of the utility model people thoughts is that the spy concentrates on studies and cooperates the utilization of scientific principle, proposes a kind of reasonable in design and effectively improve the utility model of above-mentioned disappearance finally.

The utility model content

Main purpose of the present utility model is to provide a kind of anti-electromagnetic interference mask structure, and it can provide electromagnetic shielding effect in order to be covered in the electronic building brick outside, and its manufacturing cost is lower, and can significantly reduce required Material Cost.

In order to reach above-mentioned purpose, the utility model provides a kind of anti-electromagnetic interference mask structure, it has a cover body, this cover body inside is provided with an accommodation space, this proximal edge place, cover body top is provided with the pre-broken string that is the frame type, this cover body top is provided with at least one perforate, makes this cover body top form the cover plate that a slice can upwards start.

The utility model mainly is to be provided with the pre-broken string that is the frame type in the cover body top of mask, be provided with at least one perforate in abutting connection with prejudging line position, can be convenient to utilize sharp device to insert up lifts, make the cover body top form the cover plate that a slice can upwards start, this cover plate start very easily simple, maintenance that can convenient electronic building brick, and the cover body of this mask is a single-piece, only need a mould molding,, and can significantly reduce required Material Cost so its manufacturing cost is lower.

For enabling further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet appended graphic only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.

Description of drawings

Fig. 1 is the three-dimensional exploded view of existing mask and electronic building brick.

Fig. 2 is the stereogram of the utility model first embodiment mask.

Fig. 2 A is the cross-sectional schematic of the pre-broken string of the utility model first embodiment mask.

Fig. 3 is the stereogram of the utility model first another angle of embodiment mask.

Fig. 4 is the three-dimensional exploded view of the utility model first embodiment mask and electronic building brick.

Fig. 5 starts the stereogram of state for the utility model first embodiment mask.

Fig. 6 is the stereogram of the utility model second embodiment mask.

Fig. 7 is the stereogram of the utility model the 3rd embodiment mask.

Fig. 8 is the stereogram of the utility model the 4th embodiment mask.

Fig. 9 is the stereogram of the utility model the 5th embodiment mask.

The primary clustering symbol description

Existing

7 masks

71 lower covers

72 loam cakes

8 circuit boards

9 electronic building bricks

The utility model

1 mask

11 cover bodies, 111 top boards

112 side plates 113 break in advance

114 perforates, 115 cover plates

116 accommodation spaces, 117 juts

118 perforates, 119 louvres

12 connectors

2 electronic building bricks

3 circuit boards

Embodiment

See also Fig. 2 and Fig. 3, the utility model provides a kind of anti-electromagnetic interference mask structure, this mask 1 is to make with metal material, it has one can be in order to be covered in the outside cover body 11 of electronic building brick 2 (as Fig. 4), this cover body 11 is the ducted body of a square or other shape, its shape does not limit, and can do suitable variation in response to the difference of electronic building brick 2 profiles.

The metalwork of this cover body 11 for forming with the metal material punching out, the side plate 112 that includes a top board 111 and extend downwards by these top board 111 edges, be formed with an accommodation space 116 between this top board 111 and the side plate 112, and can make this cover body 11 can be covered in this electronic building brick 2 outsides in order to hold this electronic building brick 2.

The top board 111 of this cover body 11 is provided with a pre-broken string 113, this break in advance 113 utilize semishearing partly the mode of taking out form (seeing also Fig. 2 A), and can have the function of disconnection.The top board 111 nearly edges of should pre-broken string 113 being located at this cover body 11, this breaks in advance and 113 is the frame type.

Be provided with at least one perforate 114 in abutting connection with pre-broken string 113 positions on the top board 111 of this cover body 11, this perforate 114 can be provided with one, two or other suitable number, respectively be provided with a perforate 114 (as Fig. 2, Fig. 3) in cover body 11 top dual-sides in the present embodiment, also can establish a perforate 114 (as Fig. 6) in addition, also can establish a perforate 114 (as Fig. 7) in a side in the centre.This perforate 114 can be convenient to utilize sharp device (as bottle opener) to insert up to lift, and makes in the pre-broken string 113 at these cover body 11 tops and forms the square cover plate 115 (as Fig. 5) that a slices can upwards start.This perforate 114 also can be located at other position on the top board 111 of cover body 11, and the shape of this perforate 114 do not limit, and can be the hole of different shape, also can be used as louvre.

These cover body 11 inside a connection piece 12 that has been sticked in the opposite side position at cover plate 115 places of starting, the thin-film member that this connector 12 is made for the tool flexible material, this connector 12 is arranged between cover plate 115 and the top board 111, this connector 12 can be after cover plate 115 be raised, in order to connect this cover plate 115 and this top board 111, because of this cover plate 115 is being raised to 90 degree, this whole breaking of 113 meetings of breaking in advance, 12 functions that hinge (hinge) can be provided of this connector; By above-mentioned composition to form anti-electromagnetic interference mask structure of the present utility model.

See also Fig. 4, mask 1 of the present utility model can be covered in electronic building brick 2 outsides that are installed on the circuit board 3, this mask 1 and can be suitable be fixed on the circuit board 3, thereby can provide electromagnetic shielding effect by this mask 1, have influence on the running of electronic building brick 2 to prevent Electromagnetic Interference.

See also Fig. 5, when this electronic building brick 2 needs repairing, can utilize sharp device (as bottle opener) to insert perforate 114 and up lift, this cover plate 115 can upwards be started along pre-broken string 113, after cover plate 115 is started, can keep in repair; After this cover plate 115 was further raised 90 degree, this whole breaking of 113 meetings of breaking in advance made these cover body 11 tops can form bigger opening shape, and convenient maintenance.Then cover plate 115 can be covered answer after the maintenance.Also can add loam cake (figure slightly) answer in addition in mask 1 top in addition.

See also Fig. 8, the utility model also can be provided with at least one jut 117 in abutting connection with pre-broken string 113 positions on the top board 111 of this cover body 11, this jut 117 is formed by top board 111 punching out of cover body 11, this jut 117 protrudes in top board 111 end faces, and be formed with opening perforate 118 outwardly in this jut 117, this perforate 118 can be convenient to utilize sharp device (as bottle opener) insertion up to lift, and this cover plate 115 is upwards started.

See also Fig. 9, the utility model also can offer most louvres 119 on the top board 111 of this cover body 11, can be contained in the heat radiation of the electronic building brick 2 of these cover body 11 inside in order to assistance.

The cover body 11 of the utility model mask 1 is a single-piece, only needs a mould molding, so its manufacturing cost is lower.Moreover, mask 1 of the present utility model is after maintenance, can utilize cover plate 1 15 to reply, reply even establish loam cake in addition, but the loam cake use amount can significantly reduce, the probability that needs repairing after all is not high, 100,000 of mask demands every month during volume production for example, maintenance rate 1%, then the loam cake demand needs only 1000, can significantly reduce required Material Cost.

Yet, the above only is a preferable possible embodiments of the present utility model, and non-so promptly inflexible limit claim of the present utility model is so the equivalent structure that uses the utility model specification and graphic content to do such as changes, all in like manner all be contained in the scope of the present utility model, close and give Chen Ming.

Claims

1. anti-electromagnetic interference mask structure, it has a cover body, this cover body inside is provided with an accommodation space, it is characterized in that: this proximal edge place, cover body top is provided with a pre-broken string that is the frame type, this cover body top is provided with at least one perforate, forms the cover plate that a slice can upwards start in the pre-broken string at this cover body top.

2. anti-electromagnetic interference mask structure as claimed in claim 1 is characterized in that this cover body is a metalwork.

3. anti-electromagnetic interference mask structure as claimed in claim 1 is characterized in that, the side plate that this cover body includes a top board and extended downwards by this top board edge, and this accommodation space is formed between this top board and the side plate.

4. anti-electromagnetic interference mask structure as claimed in claim 1 is characterized in that cover body top dual side-edge, centre or a side are located in this perforate.

5. anti-electromagnetic interference mask structure as claimed in claim 1 is characterized in that this perforate is located at the cover body abuts and is prejudged line position.

6. anti-electromagnetic interference mask structure as claimed in claim 1 is characterized in that this cover body is provided with at least one jut, and this perforate is formed in this jut.

7. anti-electromagnetic interference mask structure as claimed in claim 1 is characterized in that this cover body inside is provided with a connection piece in the opposite side position at the cover plate place of starting, and this connector connects this cover plate and this cover body.

8. anti-electromagnetic interference mask structure as claimed in claim 6 is characterized in that this connector is a thin-film member.