CN201266736Y - Shrapnel and device containing the same - Google Patents

Abstract

The embodiment of the utility model discloses a spring plate device, comprising a spring plate, a main case, a shield cover and a PCB. The spring plate respectively laps over the main case, the shield cover and the PCB. By the use of the spring plate device, the main case, the shield cover and the PCB are consecutively earthed, thus ensuring the continuity of earthing impedance and reducing electromagnetic radiation.

Description

A kind of shell fragment and comprise the device of this shell fragment

Technical field

The utility model relates to the manufacturing technology field, relates in particular to a kind of shell fragment and comprises the device of this shell fragment.

Background technology

Science and technology development, the application of electronic product high speed microprocessor can produce very strong electromagnetic interference, and the complexity day by day of electromagnetic environment also requires electronic product that certain anti-interference capability is arranged simultaneously.Electromagnetic compatibility has become an important consideration point in the electronic apparatus system overall performance.

The return electric current that the high-frequency signal electric current causes is one of main source that causes electromagnetic radiation, because the imperfect earth of veneer, the bond impedance of shield structure is excessive etc., all can influence the continuity of ground impedance, thereby influence return current path, causes electromagnetic radiation.Therefore when high frequency unit designs, must use the mode of multipoint earthing,, thereby reduce electromagnetic radiation with the impedance of reduction earth-return.

In realizing process of the present utility model, the inventor finds that prior art has following shortcoming:

With modes such as traditional grounding elastic part, conducting foam bondings,, can not reach port impedance ground continuity purpose in that the ground connection of port organization is handled.Because shield and PCB (PrintedCircuit Board, printed circuit board (PCB)) well do not couple together between the main frame, make impedance become discontinuous, directly cause the generation of electromagnetic radiation.

The utility model content

Embodiment of the present utility model provides a kind of shrapnel device, to realize the continuity ground connection of multiple shield, has guaranteed the continuity of impedance ground, has reduced electromagnetic radiation.

Embodiment of the present utility model provides a kind of shrapnel device, comprising: shell fragment, main case, radome and PCB;

Described shell fragment and described main case, described radome and described PCB overlap respectively;

Described shell fragment further comprises: ground connection pop-off, shell fragment upper contact, shell fragment lower contact;

Described ground connection pop-off and described main case overlap joint;

Described shell fragment upper contact and described radome overlap joint;

Described shell fragment lower contact and described PCB overlap joint;

Described shell fragment is projection type shell fragment or three forked type shell fragments;

Two end points of described projection type shell fragment are respectively described ground connection pop-off and described shell fragment lower contact, and jut is described shell fragment upper contact;

Three end points of described three forked type shell fragments are respectively described ground connection pop-off, described shell fragment upper contact and described shell fragment lower contact.

Compared with prior art, the utility model embodiment has following advantage:

Main case, radome and PCB continuity ground connection have guaranteed the continuity of impedance ground to have reduced electromagnetic radiation.

Description of drawings

Fig. 1 a and 1b are the structural representation of projection type shell fragment of the present utility model;

Fig. 2 a and 2b are the structural representation of three forked type shell fragments of the present utility model;

Fig. 3 a and 3b are the structural representation of an embodiment of shrapnel device of the present utility model.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further set forth:

Shown in Fig. 1 a and 1b, be the structural representation of projection type shell fragment of the present utility model, described projection type shell fragment comprises:

Ground connection pop-off 11, shell fragment upper contact 12, shell fragment lower contact 13.

Two end points of described projection type shell fragment are respectively described ground connection pop-off 11 and described shell fragment lower contact 13, and jut is described shell fragment upper contact 12.

In the utility model, the manufacturing materials of shell fragment is metal materials such as stainless steel or beryllium copper, through to the punching press of metal material, reduce and be bent into shell fragment.

In the utility model, the shape of shell fragment is not unique, is the structural representation of three forked type shell fragments of the present utility model as Fig. 2 a and 2b, and described three forked type shell fragments comprise:

Ground connection pop-off 21, shell fragment upper contact 22, shell fragment lower contact 23.

Three end points of described three forked type shell fragments are respectively described ground connection pop-off 21, described shell fragment upper contact 22 and described shell fragment lower contact 23.

The shape of shell fragment of the present utility model not only is confined to above-mentioned two kinds, is to guarantee that when shell fragment that uses the utility model to provide and the device, main case, radome and PCB can effectively overlap by shell fragment for the requirement of shell fragment shape.

Shown in Fig. 3 a and 3b, be the structural representation of an embodiment of shrapnel device of the present utility model, described shrapnel device comprises:

Projection type shell fragment 10, main case 20, radome 30 and PCB40;

Described projection type shell fragment 10 overlaps respectively with described main case 20, described radome 30 and described PCB40;

Described projection type shell fragment 10 further comprises: ground connection pop-off 11, shell fragment upper contact 12, shell fragment lower contact 13.

Described ground connection pop-off 11 and described main case 20 overlap joints;

Described shell fragment upper contact 12 and described radome 30 overlap joints;

Described shell fragment lower contact 13 and described PCB40 overlap joint.

In another embodiment of the present utility model, can in shrapnel device, use the shell fragment of three forked type shell fragments or other shape.

Wherein, radome 30 is screening arrangements of PCB, and protection PCB avoids the interference effect of external electromagnetic field, and the electromagnetic radiation leakage that also can stop the PCB generation simultaneously is outside radome.

The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims (5)

1, a kind of shrapnel device is characterized in that, comprising: shell fragment, main case, radome and PCB;

Described shell fragment and described main case, described radome and described PCB overlap respectively.

2, shrapnel device according to claim 1 is characterized in that described shell fragment further comprises: ground connection pop-off, shell fragment upper contact, shell fragment lower contact;

Described ground connection pop-off and described main case overlap joint; Described shell fragment upper contact and described radome overlap joint; Described shell fragment lower contact and described PCB overlap joint.

3, shrapnel device according to claim 1 is characterized in that described shell fragment is projection type shell fragment or three forked type shell fragments;

Two end points of described projection type shell fragment are respectively described ground connection pop-off and described shell fragment lower contact, and jut is described shell fragment upper contact;

Three end points of described three forked type shell fragments are respectively described ground connection pop-off, described shell fragment upper contact and described shell fragment lower contact.

4, a kind of shell fragment is characterized in that, comprising: ground connection pop-off, shell fragment upper contact, shell fragment lower contact.

5, as shell fragment as described in the claim 4, it is characterized in that described shell fragment is projection type shell fragment or three forked type shell fragments;

Two end points of described projection type shell fragment are respectively described ground connection pop-off and described shell fragment lower contact, and jut is described shell fragment upper contact;

Three end points of described three forked type shell fragments are respectively described ground connection pop-off, described shell fragment upper contact and described shell fragment lower contact.

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