CN213368474U

CN213368474U - Electromagnetic shielding case

Info

Publication number: CN213368474U
Application number: CN202022191660.6U
Authority: CN
Inventors: 唐寺川
Original assignee: Shanghai Juntao Technology Co ltd; Chengdu Juntao Technology Co ltd
Current assignee: Shanghai Juntao Technology Co ltd; Chengdu Juntao Technology Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-06-04
Anticipated expiration: 2030-09-29

Abstract

The utility model relates to an electromagnetic shield technical field discloses an electromagnetic shield machine case, including box, internal shield lid and external shield lid, all laminate on inside wall and the lateral wall of the upper end of box and have the electrically conductive sticky tape, the internal shield lid includes that first lid and perpendicular setting are in the first enclosure at first lid edge, the external shield lid includes that second lid and perpendicular setting are in the second enclosure at second lid edge, first lid laminating is in on the second lid, and it is insulating mutually between it, first enclosure with form the joint groove between the second enclosure, the joint groove cup joints the upper end of box. The utility model provides an electromagnetic shield machine case all sets up electrically conductive sticky tape through all on inside wall and the lateral wall in the upper end of box, sets up the joint groove simultaneously and cup joints the upper end at the box to form inner circle shielding layer and outer lane shielding layer, thereby improved the shielding effect. Meanwhile, the connection strength between the box body and the shielding cover is improved.

Description

Electromagnetic shielding case

Technical Field

The utility model relates to an electromagnetic shield technical field especially relates to an electromagnetic shield machine case.

Background

At present, electromagnetic energy is fully utilized, however, various electronic devices greatly increase electromagnetic noise in the surrounding environment while benefiting humans. The useful signals generated by some systems are indeed a source of interference to other systems, and this phenomenon has shown an increasing trend in recent years. Electromagnetic shielding is becoming increasingly important as electromagnetic interference radiates or conducts from low frequencies to the microwave range to the operating electronic equipment or systems and the surrounding environment without penetrating into the ground. At present, in the market, electronic equipment relates to shielding of a case shell, and the conductive continuity of the shell is improved by adopting a mode of sticking conductive cloth or conductive adhesive tape between the case and a cover plate, so that a certain shielding effect is achieved. However, due to manufacturing tolerance, the conductive cloth or conductive adhesive adhered between the case and the cover plate is often not tightly adhered in a local area, so that electromagnetic leakage is caused, and the shielding effect is influenced; on the other hand, since the cavity between the cabinet and the shield cover is empty and has no support, deformation may occur during transportation or in a severe environment.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an electromagnetic shielding machine case improves the shielding effect, improves the joint strength between box and the shielding lid.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an electromagnetic shielding machine case, includes box, internal shield lid and outer shielding lid, all laminate on the inside wall of the upper end of box and the lateral wall and have electrically conductive sticky tape, the internal shield lid includes first lid and sets up perpendicularly the first enclosure at first lid edge, outer shielding lid includes that second lid and perpendicular setting are in the second enclosure at second lid edge, first lid laminating is in on the second lid, and it is insulating mutually between it, first enclosure with form the joint groove between the second enclosure, the joint groove cup joints the upper end of box.

Preferably, an insulating layer is arranged between the first cover body and the second cover body, and the area of the insulating layer is the same as that of the second cover body.

Preferably, the insulating layer is made of a plastic plate.

Preferably, the plastic plate has a thickness of 0.8 to 1.2 mm.

Preferably, the box body, the inner shielding cover and the outer shielding cover are all made of aluminum alloy.

Preferably, the inner shielding cover is detachably connected with the outer shielding cover, and the inner shielding cover and the outer shielding cover are fixedly connected with the box body through screws.

Preferably, the cross section of the box body is rectangular.

The utility model discloses electromagnetic shielding machine case, it compares with prior art, and beneficial effect lies in: all set up the electrically conductive sticky tape on inside wall and the lateral wall through the upper end at the box, set up the joint groove simultaneously and cup joint the upper end at the box to make and form the inner circle shielding layer between interior shielding lid, inboard electrically conductive sticky tape and the box, form the outer lane shielding layer between the electrically conductive sticky tape of box, the outside and the outer shielding lid, make electromagnetic radiation pass through the inner circle shielding layer and leak through the decay, shield once more through the outer lane shielding layer again, thereby improved shielding effect. Simultaneously, cup joint the connected mode of box through the joint groove, the internal shield lid can play the inboard supporting role of box, has improved the joint strength between box and the shield lid. The utility model discloses simple structure, excellent in use effect easily uses widely.

Drawings

Fig. 1 is a schematic structural diagram of the electromagnetic shielding case of the present invention.

Fig. 2 is a schematic cross-sectional view of fig. 1.

Fig. 3 is a cross-sectional view of the inner shield cover and the outer shield cover.

Wherein: 1-box body, 2-inner shielding cover, 21-first cover body, 22-first surrounding ring, 3-outer shielding cover, 31-second cover body, 32-second surrounding ring, 4-conductive adhesive tape, 5-clamping groove and 6-insulating layer.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1-3, an electromagnetic shielding case according to a preferred embodiment of the present invention includes a case body 1, an inner shielding cover 2 and an outer shielding cover 3, wherein a cross section of the case body 1 is rectangular. All laminate on the inside wall and the lateral wall of the upper end of box 1 and have electrically conductive sticky tape 4, electrically conductive sticky tape 4 also can adopt electrically conductive cloth, and during the setting the inboard and the outside of box 1 all laminate the round, become the closure. The inner shielding cover 2 comprises a first cover body 21 and a first surrounding ring 22 vertically arranged at the edge of the first cover body 21, the outer shielding cover 3 comprises a second cover body 31 and a second surrounding ring 32 vertically arranged at the edge of the second cover body 31, the first cover body 21 is attached to the second cover body 31, the first cover body 31 and the second cover body are insulated from each other, a clamping groove 5 is formed between the first surrounding ring 22 and the second surrounding ring 32, and the clamping groove 5 is sleeved at the upper end of the box body 1.

Electromagnetic shield machine case based on above-mentioned technical characteristics, all set up conductive adhesive tape 4 on inside wall and the lateral wall through the upper end at box 1, set up joint groove 5 simultaneously and cup joint in the upper end of box 1, thereby make interior shielding lid 2, form the inner circle shielding layer between inboard conductive adhesive tape 4 and the box 1, form the outer lane shielding layer between the conductive adhesive tape 4 in the outside and the outer shielding lid 3, make electromagnetic radiation pass through the inner circle shielding layer and leak through the decay, shield once more through the outer lane shielding layer again, thereby shielding effect has been improved. Simultaneously, cup joint the connected mode of box 1 through joint groove 5, interior shield cover 2 can play the supporting role to box 1 inboard, has improved the joint strength between box 1 and the shield cover. The utility model discloses simple structure, excellent in use effect easily uses widely.

In this embodiment, an insulating layer 6 is disposed between the first cover 21 and the second cover 31, and the areas of the insulating layer 6 and the second cover 31 are the same, so as to ensure the insulating effect. Preferably, the insulating layer 6 is made of a plastic plate, and the thickness thereof is 0.8-1.2 mm.

In this embodiment, the box body 1, the inner shielding cover 2 and the outer shielding cover 3 are made of aluminum alloy, preferably 5052 aluminum alloy, and have good conductivity. Further, the case 1, the inner shield cover 2, and the outer shield cover 3 may be made of stainless steel, cold-rolled steel, or the like.

In this embodiment, the inner shielding cover 2 and the outer shielding cover 3 are detachably connected, and the inner shielding cover 2 and the outer shielding cover 3 are both fixedly connected to the box body 1 through screws. When the shielding cover is manufactured, the conductive adhesive tape 4 is firstly attached to the inner side wall of the case 1 for a circle, and then the inner shielding cover 2 is fixedly connected with the case 1 by screws; laying the insulating layer 6 above the inner shielding cover 2 so as to insulate and separate the inner shielding cover 2 from the outer shielding cover 3; and then, the conductive adhesive tape 4 is attached to the outer side wall of the case 1 for one circle, and finally, the outer shielding cover 3 is fixedly connected with the case 1 by screws. In addition, during the connection, the upper part of the box body 1 can be matched and connected with the shielding cover in a pressure-breaking difference mode, or other connection modes can be adopted, and the connection modes can be determined according to actual conditions.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. An electromagnetic shielding case, its characterized in that: including box, internal shield lid and external shield lid, all laminate on the inside wall of the upper end of box and the lateral wall and have the electrically conductive sticky tape, the internal shield lid includes first lid and sets up perpendicularly the first enclosure at first lid edge, the external shield lid includes the second lid and sets up perpendicularly the second enclosure at second lid edge, first lid laminating is in on the second lid, and it is insulating mutually between it, first enclosure with form the joint groove between the second enclosure, the joint groove cup joints the upper end of box.

2. The electromagnetically shielded chassis of claim 1, wherein: an insulating layer is arranged between the first cover body and the second cover body, and the area of the insulating layer is the same as that of the second cover body.

3. The electromagnetically shielded chassis of claim 2, wherein: the insulating layer is made of a plastic plate.

4. The electromagnetically shielded chassis of claim 3, wherein: the thickness of the plastic plate is 0.8-1.2 mm.

5. The electromagnetically shielded chassis of claim 1, wherein: the box body, the inner shielding cover and the outer shielding cover are all made of aluminum alloy.

6. The electromagnetically shielded chassis of claim 1, wherein: the inner shielding cover is detachably connected with the outer shielding cover, and the inner shielding cover and the outer shielding cover are fixedly connected with the box body through screws.

7. The electromagnetically shielded chassis of claim 1, wherein: the cross section of the box body is rectangular.