CN2426265Y - Shielding structure for electronic device - Google Patents

Abstract

The utility model relates to a shielding structure for electronic devices, which comprises a frame body and a cover body which is covered on the frame body, wherein, the frame body comprises a top wall and side walls which are vertically bent from the side edges of the top wall, and clamping parts which are in the shape of a longitudinal concave channel are arranged on the side walls; the cover body comprises an upper board and clamping wings which are vertically arranged on the peripheral side of the upper board, and a protrusion is arranged on each clamping wing. During the assembly, the frame body can be covered on an electronic device which is arranged on a circuit board, and the cover body is then arranged on the frame body. The clamping protrusions of the clamping wings are clamped with the clamping parts of the side wall of the frame body, and the cover body is fixedly clamped on the frame body. Thereby, the utility model performs a shielding function for the electronic device which is arranged in the frame body.

Description

The shielding structure of electronic installation

The shielding structure of the relevant a kind of electronic installation of the utility model refers in particular to a kind of shielding structure of detachable electronic installation.

Electromagnetic interference is one of common problem of electronic equipment, and circuit all can generate electromagnetic waves in application usually, and influences the signal transmission and the service behaviour of other electronic installation.For reducing this kind annoyance level, a cover body of being made by electric conducting material can be set around electronic installation, this cover body can be eliminated accumulation of static electricity, and can absorb electromagnetic field, can realize the function of electromagnetic shielding whereby.Relevant prior art can be consulted United States Patent (USP) the 5th, 400, and 949,5,365,410 and 5,742, No. 488 etc.But, these existing shielding structures are generally integral type and are welded on the circuit board, when if electronic component that this shield member shielded or device need to be changed or are repaired, then need by the fusing operation removing shield member, its process is very loaded down with trivial details and be unfavorable for operation readiness.

For addressing the above problem, also have shielding structure is divided into two separate type members, relevant patent can be consulted United States Patent (USP) the 5th, 252,782,5,353,201,5,419,722,5,434,747,5,436,399,5,495,399,5,660,558,5,742,004,5,014,160,5,198,618,5,895, No. 884 etc., see also the three-dimensional exploded view that Figure 1 shows that the shielding structure that has electronic installation now, this shielding structure 5 comprises lower frame 50 and lid 51, wherein lower frame 50 comprises several sidewalls of separating mutually 500, and be provided with several through holes 501 on the lateral wall 500 of this lower frame 50, lid 51 comprises top board 510 and at the vertically disposed lappet 511 of top board 510 all sides, wherein this lappet 511 is provided with several projectioies 512, when 51 groups of lids were located on the lower frame 50, the projection 512 of correspondence position engaged mutually and lid 51 is retained on the lower frame 50 on the through hole 501 of lower frame 50 and lid 51 lappets 511.But this kind structure needs be provided with drift to form the through hole 501 of lower frame 50 sidewalls 500 in the punch forming process, and drift can produce after multi-pass operation and wear and tear and can not keep predetermined precision like this, and is unfavorable for the linking steady character of itself and lid 51; Moreover it only aligns when engaging at the projection 512 of lid 51 and the through hole 501 of lower frame 50, and lid 51 can be retained on the lower frame 50, and so projection 512 and through hole 501 need very high quality of fit and be unfavorable for making and assembling.

The utility model purpose is to provide a kind of and is easy to make and assembling, and be convenient to the shielding structure of the electronic installation that keeps in repair and dismantle, this shielding structure adopts separate type setting also to be provided with the device for fastening that matches, and this device for fastening has bigger button and holds the zone and can effectively guarantee the shielding structure firm combination of part that is separated.

The purpose of this utility model is achieved through the following technical solutions: the shielding structure of the utility model electronic installation comprises that framework and lid put the lid on framework, wherein framework comprises roof and the sidewall that vertically bends at the roof lateral margin, lid comprises that then upper plate reaches at all sides of upper plate and the vertically disposed holding wing of upper plate, it is characterized in that, frame side wall is provided with the holding section that is lengthwise depression channel shaped, and is provided with projection on each holding wing of lid.During assembling, the framework lid can be put above the electronic installation on the circuit board, then cover cap is put on framework, the projection that holds by holding wing fastens with the holding section of frame side wall and lid is retained on the framework, and realizes the function of shielding to electronic installation in the framework.

The utility model fastens with the holding section of depression set on the frame side wall and the projection of lid holding wing, compared to holding between prior art point-to-point (promptly projection is to through hole), the utlity model has more broad clamping areas, like this, holding projection does not need special required precision with the holding section and is easy to make and assemble; And design need not run through in the holding section of framework, and mould only need be provided with respective ribs to form the holding section of indent in punch forming, and mould need not dispose independent drift and be beneficial to raising die life and reduce manufacturing cost like this.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the three-dimensional exploded view of the shielding structure of existing electronic installation.

Fig. 2 is assembled into three-dimensional exploded view before the circuit board for the utility model.

Fig. 3 is assembled into the stereogram of circuit board for the utility model.

Fig. 4 is the partial schematic sectional view of Fig. 3 along the A-A line.

See also Fig. 2 to shown in Figure 4, the shielding structure 1 of the utility model electronic installation comprises framework 10 and the lid 11 that matches with framework 10, wherein framework 10 comprises roof 100 and the sidewall 101 that vertically bends at roof 100 lateral margins, and be provided with an opening that runs through 102 at roof 100, form to enclose and contain the space that is installed in the electronic installation 20 on the circuit board 2 with sidewall 101.And sidewall 101 is provided with the holding section 103 to framework 10 internal bend.Lid 11 comprises with the combined upper plate 110 of framework 10 and at the vertical holding wing 111 that bends setting of upper plate 110 all sides, these holding wings 111 are corresponding with the sidewall 101 of framework 10, and on lid 11 upper plates 110, be provided with several through holes 113, on each holding wing 111 of upper plate 110, then be provided with a projection that is used to hold 112.

When being located at 1 group of this shielding structure on the circuit board 2, can earlier 10 groups of frameworks be located at electronic installation 20 peripheries that circuit board 2 need shield, and be connected with the grounding path of circuit board 2, then lid 11 is assembled on the framework 10, as shown in Figure 4, the holding section 103 that holds projection 112 and framework 10 sidewalls 101 by lid 11 holding wings 111 is slidingly fastened, and lid 11 and framework 10 firmly are combined as a whole.In addition, holding section 103 can cooperate and holds the projection 112 and design of tool arc chord angle 104, in order to engaging and the compactness that holds.And, when lid 11 is assembled mutually with framework 10, can make by sliding type to hold in protruding 112 groups of holding sections 103 of going into to be held in to be lengthwise depression conduit, and make things convenient for the two firm combination.

Be appreciated that for above-mentioned execution mode, also can on the sidewall of framework, projection be set, and the catching groove of depression is set on the holding wing of lid, can realize the purpose of this utility model equally.

Claims (4)

1. the shielding structure of an electronic installation, be installed in electronic installation on the circuit board in order to be assembled on the circuit board with electromagnetic shielding, comprise framework and lid, wherein framework is provided with sidewall, the lid group is located on the described framework, comprise upper plate and the holding wing that bends in the upper plate lateral margin, it is characterized in that: frame side wall is provided with and is the holding section that longitudinally extends, and lid is provided with the projection that holds that matches with the framework holding section on holding wing.

2. the shielding structure of electronic installation according to claim 1, it is characterized in that: the lid upper plate is provided with several through holes.

3. the shielding structure of electronic installation according to claim 1 is characterized in that: lid makes by sliding type and holds projection and be held in to organize in the holding section and be located on the framework.

4. the shielding structure of electronic installation according to claim 3 is characterized in that: the holding section is provided with to cooperate and holds projection so that arc chord angle of the two firm engaging.

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