CN205276984U - Microwave dark room and structure is assembled to shielding shell thereof - Google Patents
Microwave dark room and structure is assembled to shielding shell thereof Download PDFInfo
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- CN205276984U CN205276984U CN201521035690.0U CN201521035690U CN205276984U CN 205276984 U CN205276984 U CN 205276984U CN 201521035690 U CN201521035690 U CN 201521035690U CN 205276984 U CN205276984 U CN 205276984U
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Abstract
The utility model discloses a shielding shell of microwave dark room is assembled the structure and is had this shielding shell and assembles the microwave dark room of structure, and the shell should be shielded and the structure was assembled including having the at least a pair of first concatenation unit and the second concatenation unit of electromagnetic shielding performance's mutual concatenation, first concatenation unit with the at least surface of second concatenation unit is the ferromagnetic metal material of non -, first concatenation unit with the concatenation of non -conducting mode is sentenced in the concatenation of second concatenation unit the inboard of concatenation department covers lossy layer the outside of concatenation department covers there is the shielding layer, the depletion layer is non -magnetism nature absorbing material, the shielding layer is used for the shielding to come from outside electromagnetic wave. The utility model discloses a structure is assembled to the shielding shell can avoid producing intermodulation interference reliably to the improvement is to electromagnetic shielding property.
Description
Technical field
The utility model relates to the technical field of measurement and test of the communications industry, particularly the shielding case splicing structure of a kind of microwave unreflected chamber and have the microwave unreflected chamber of this shielding case splicing structure.
Background technology
Passive intermodulation (PassiveInter-Modulation is called for short PIM) causes by the non-linear character of passive device various in launching system. In high-power, multi-channel system, the non-linear of these passive devices can produce the more higher harmonic relative to operating frequency, these harmonic waves mix with operating frequency can produce one group of new frequency, and its net result is exactly produce one group of useless frequency spectrum in space thus the normal communication of impact.
In passive device (antenna, cable etc.), passive intermodulation Producing reason mainly comprises three aspects: bad mechanical node, the hysteresis characteristic of material and surface or contact surface are polluted.
Microwave unreflected chamber generally by shield shell, dark-room door, absorbing material layer, be arranged on being formed by equipment etc. such as the bracing or strutting arrangement of measurement equipment, antenna holder systems in darkroom, when hertzian wave incides the absorbing material layer of microwave unreflected chamber, the hertzian wave of the overwhelming majority is absorbed, a simulation freeboard and the communication environments with external isolation can be provided for hertzian wave, can be applicable to many fields such as antenna, target RCS feature measurement, electromagnetic compatibility test and electronics l-G simulation test.
At present, the shield shell of traditional microwave unreflected chamber mostly is splicing structure, connecting portion adopts the mode of welding or splicing to assemble, wherein, welding can produce the uneven conductiving point such as burr and weldering hole, and splicing can produce butt seam and causes electromagnetic-wave leakage, when testing antenna intermodulation index, test error all can be caused. In order to avoid this phenomenon, shield shell can adopt integrative-structure, but due to existing microwave unreflected chamber size all relatively big, the shield shell of integrative-structure be difficult to realize and cost very high.
Application number be 201220448233.4 Chinese patent literature disclose a kind of microwave unreflected chamber for intermodulation testing, the enclosed space that darkroom main body is made up of with the block wall face being fixed thereon keel frame, block wall face is provided with aluminium alloy screen layer on the surface in the face of the side of enclosed space, and the seam place of screen layer is provided with shielding adhesive tape. Shielding adhesive tape material is the aluminum foil material with insulating coating, and its effect is that seam is not directly exposed, and its material is the aluminum foil material with insulating coating. This assembling mode can effectively avoid the formation in the strong intermodulation source of darkroom big area, but, insulating coating in this structure is easily scratched by the edge of aluminium alloy plate and burr, cause aluminium alloy screen layer and the aluminium foil short circuit in shielding adhesive tape, in addition, owing to the seam place of screen layer exists gap, the intermodulation source from outside, darkroom can enter in darkroom causes Intermodulation Interference.
Practical novel content
Main purpose of the present utility model is to overcome the deficiencies in the prior art, it is provided that the shielding case splicing structure of a kind of microwave unreflected chamber and have the microwave unreflected chamber of this shielding case splicing structure, reliably avoids producing Intermodulation Interference, and improves shielding electromagnetic waves performance.
For achieving the above object, the utility model is by the following technical solutions:
The shielding case splicing structure of a kind of microwave unreflected chamber, comprise at least one pair of first concatenation unit and the 2nd concatenation unit of the mutual splicing with capability of electromagnetic shielding, described first concatenation unit and described 2nd concatenation unit at least outside surface be non-ferromagnetic metallic substance, the stitching portion of described first concatenation unit and described 2nd concatenation unit is spliced in non-conduction mode, it is coated with loss layer in the inner side of described stitching portion, outer side covers in described stitching portion has screen layer, described loss layer is can non magnetic absorbing material, described screen layer is for shielding the hertzian wave from outside.
Further:
Described loss layer is for having elastic non magnetic absorbing material, and especially rubber inhales wave plate; Or for inhaling ripple glue.
Described screen layer is the non-ferromagnetic metallic substance of the reticulated structure with electroconductibility and ductility, it is preferable to copper or silver.
Described splicing in non-conduction mode comprises: retain empty splicing gap in described stitching portion, at the splicing end face spray insulation paint of described first concatenation unit and described 2nd concatenation unit or arrange insulative glue or insulation film in the splicing gap of described stitching portion.
Described shielding case splicing structure also comprises the non-ferromagnetic sheet of metallic material of the inner side and outer side being separately positioned on described stitching portion, and described loss layer and described screen layer are compressed by the non-ferromagnetic sheet of metallic material of inner side and outer side respectively and be covered in described stitching portion. Preferably, described non-ferromagnetic sheet of metallic material is aluminum or aluminum alloy.
Described stitching portion is positioned in the plane of described shielding case;
Wherein on described first concatenation unit and described 2nd concatenation unit, the position of close described stitching portion wears multiple rivet or bolt, so that described non-ferromagnetic sheet of metallic material to be fastened on the stitching portion of described first concatenation unit and described 2nd concatenation unit; Or
Wherein in the splicing gap of described stitching portion, wear rivet or bolt, described non-ferromagnetic sheet of metallic material to be fastened on the stitching portion of described first concatenation unit and described 2nd concatenation unit; Or
The non-ferromagnetic sheet of metallic material being wherein positioned at the outside of described stitching portion has two ends and passes the splicing gap of described stitching portion and the U-bend folding part of described loss layer, described two ends are pressed on the screen layer in the outside of described first concatenation unit and described 2nd concatenation unit respectively, and the bottom of described U-bend folding part is fixed together by the non-ferromagnetic sheet of metallic material of rivet or bolt with the inner side being positioned at described stitching portion;
Described rivet or bolt are non-magnetic ferrous material.
Described stitching portion is positioned on the corner of described shielding case, and the first concatenation unit described at least one pair of and described 2nd concatenation unit with the splicing of certain angle, the angle ranging from acute angle, right angle or obtuse angle in described stitching portion;
Wherein said first concatenation unit is along first party to setting, described 2nd concatenation unit is arranged along second direction, described first concatenation unit is relative with the end face of described 2nd concatenation unit or staggers, and has splicing gap between described first concatenation unit and described 2nd concatenation unit; Described screen layer is arranged with the bending consistent with described angle and is covered on the outside of the outside of described first concatenation unit, the outer mouth in described splicing gap and described 2nd concatenation unit, and described loss layer is arranged with the bending consistent with described angle and covered on the inner side of mouth and described 2nd concatenation unit in the inner side of described first concatenation unit, described splicing gap.
Preferably, described first concatenation unit is vertically arranged, described 2nd concatenation unit is arranged in the horizontal direction, the end face of described first concatenation unit and described 2nd concatenation unit is the vertical surface mutually staggered, the end face of described first concatenation unit is concordant with the upper surface of described 2nd concatenation unit, the end face of described 2nd concatenation unit towards described first concatenation unit inner side and and the inner side of described first concatenation unit between there is splicing gap; Described screen layer covers on the upper surface of the outside of described first concatenation unit, the end face of described first concatenation unit, the outer mouth in described splicing gap and described 2nd concatenation unit with the layout of L-shaped, and described loss layer covers on the lower surface of mouth and described 2nd concatenation unit in the inner side of described first concatenation unit, described splicing gap with the layout of L-shaped; Or
Preferably, described first concatenation unit is vertically arranged, described 2nd concatenation unit is arranged in the horizontal direction, the end face of described first concatenation unit and described 2nd concatenation unit is inclined-plane facing each other, thus described first concatenation unit and described 2nd concatenation unit are L-shaped by the transition and linkage of end face, have splicing gap between the end face of described first concatenation unit and described 2nd concatenation unit; Described screen layer covers on the outside of described first concatenation unit, the outer mouth in described splicing gap and the upper surface of described 2nd concatenation unit with the layout of L-shaped, and described loss layer covers on the lower surface of mouth and described 2nd concatenation unit in the inner side of described first concatenation unit, described splicing gap with the layout of L-shaped.
The inner side of described first concatenation unit and described 2nd concatenation unit is also provided with absorbing material, and described absorbing material at least covers described loss layer.
Described first concatenation unit and/or described 2nd concatenation unit are sandwich board, and the skin of described sandwich board is non-ferromagnetic metallic substance, such as aluminum or aluminum alloy, and the core layer of described sandwich board is applied fireproofing.
A kind of microwave unreflected chamber, has any one shielding case splicing structure above-mentioned.
The beneficial effects of the utility model:
In the shielding case splicing structure that the utility model proposes, the first concatenation unit and the 2nd concatenation unit splice in non-conduction mode, shielding case concatenation unit at least outside surface adopt non-ferromagnetic metallic substance, avoid the formation in the strong intermodulation source of darkroom big area. The loss layer of non magnetic absorbing material it is coated with in the inner side of stitching portion, outer side covers in stitching portion has screen layer, loss layer inside stitching portion can absorb stitching portion from inner and outside hertzian wave, the screen layer in outside can shield the hertzian wave from outside, and this kind of splicing construction can effectively be avoided causing local intermodulation because of connecting undesirable. And, even if between outer field screen layer and the concatenation unit of shielding case being directly contact, perhaps intermodulation can be produced at screen layer place from the hertzian wave of microwave unreflected chamber inside, but the absorption due to loss layer, arrive the hertzian wave the earth decay to the utmost at screen layer place, the intermodulation ripple produced is again through the absorption again of loss layer, and the intermodulation ripple entering microwave unreflected chamber inside is very little. Shielding case splicing structure of the present utility model is used for the darkroom of passive cross modulation test, it is possible to reliably avoid producing Intermodulation Interference, and improve shielding electromagnetic waves performance, it is to increase test precision.
Preferred scheme can also obtain further advantage.
Such as, shielding case concatenation unit preferably adopts both sides to be the sandwich board of aluminum or aluminum alloy plate, can reduce darkroom weight, and reduce costs under the prerequisite ensureing darkroom intensity.
Empty splicing gap is retained, at the splicing end face spray insulation paint of the first concatenation unit and the 2nd concatenation unit or arrange insulative glue or insulation film in the splicing gap of stitching portion in stitching portion, the adjacent concatenation unit of shielding case does not directly connect, and avoids local intermodulation better.
By being arranged on the non-ferromagnetic sheet of metallic material of the inner side and outer side of stitching portion, by the non-ferromagnetic sheet of metallic material of inner side and outer side, loss layer and screen layer being compressed covering respectively, with the concatenation unit close fit of shielding case, its contact pressure can avoid there is gap.
The structure design of stitching portion can be played a supporting role in a preferred embodiment, avoids darkroom to adopt extra supporting structure.
Absorbing material is covered on the splicing structure inside shielding case, it is possible to avoid exposed splicing structure that test is caused interference.
Accompanying drawing explanation
Fig. 1 is the exterior perspective view in the darkroom of a kind of embodiment of the utility model;
Fig. 2 is the part sectioned view of shielding case splicing structure in a kind of embodiment at housing plane place;
Fig. 3 is the part sectioned view of shielding case splicing structure in another kind of embodiment at housing plane place;
Fig. 4 is the part sectioned view of shielding case splicing structure in another embodiment at housing plane place;
Fig. 5 is the part sectioned view of shielding case splicing structure in a kind of embodiment at housing corner place;
Fig. 6 is the part sectioned view of shielding case splicing structure in another kind of embodiment at housing corner place.
Embodiment
Hereinafter enforcement mode of the present utility model is done detailed explanation. It should be emphasized that following explanation is only exemplary, instead of in order to limit scope of the present utility model and application thereof.
" non-ferromagnetic metallic substance " herein, refers to that its main component is not the metallic substance of ferromagnetic substance (such as iron, cobalt, nickel), it is possible to be aluminium, aluminium alloy, copper alloy, stainless steel, titanium alloy, lithium alloy etc.
Consult Fig. 1 to Fig. 6, according to embodiment of the present utility model, the shielding case splicing structure of a kind of microwave unreflected chamber, comprise at least one pair of first concatenation unit, the 2nd concatenation unit 1 of splicing mutually, first concatenation unit and the 2nd concatenation unit 1 at least outside surface be non-ferromagnetic metallic substance, first concatenation unit and the 2nd concatenation unit 1 splice in non-conduction (i.e. open circuit) mode, it is coated with loss layer 5 in the inner side of stitching portion, outer side covers in stitching portion has screen layer 6, loss layer 5 is non magnetic absorbing material, and screen layer 6 is for shielding the hertzian wave from outside.
Consulting Fig. 2 to Fig. 6, in a preferred embodiment, loss layer 5 is for having elastic non magnetic absorbing material, and such as rubber inhales wave plate, and for example inhales ripple glue, and loss layer 5 can absorb stitching portion from inner and outside hertzian wave, avoids producing intermodulation simultaneously.
It should be noted that, non magnetic absorbing material refers to that loss mechanism is by the absorbing material of dielectric loss or resistance losses instead of magnetic loss.
Elastic loss layer 5 is with compacted in the inner side of stitching portion during shielding case close fit, thus effectively fills the gap at contact position.
Consult Fig. 2 to Fig. 6, owing to the first concatenation unit and the 2nd concatenation unit 1 splice in non-conduction (i.e. open circuit) mode, can there is splicing gap between the two, in order to shield the hertzian wave from outside at gap place, the also screen layer 6 in stitching portion arranged outside, screen layer 6 is metallic substance. In order to avoid producing intermodulation better, screen layer 6 is preferably non-ferromagnetic metallic substance. In a preferred embodiment, screen layer 6 is preferably the good non-ferromagnetic metallic substance of good conductivity, good springiness and ductility, such as copper or silver. Thus, screen layer 6 its contact surface when the concatenation unit close fit of outside and shielding case can compress well. More preferably, screen layer 6 adopts reticulated structure, and it is convenient to calendering.
Consulting Fig. 2 to Fig. 6, in a preferred embodiment, the first concatenation unit and/or the 2nd concatenation unit 1 are sandwich board, and the skin 102 of sandwich board is non-ferromagnetic metallic substance, it is preferable to aluminum or aluminum alloy, and the core layer 101 of sandwich board is applied fireproofing. When adopting sandwich board, the thickness of the metal outer of concatenation unit can be reduced to 0.5mm.
In one embodiment, the first concatenation unit and the 2nd concatenation unit 1 can retain empty splicing gap in stitching portion, thus realize non-conduction mode and splice.
In another kind of preferred embodiment, it is possible at the splicing end face spray insulation paint of the first concatenation unit and the 2nd concatenation unit 1.
Consult Fig. 2 to Fig. 6, in preferred embodiment, except having splicing gap between the first concatenation unit and the 2nd concatenation unit 1, in splicing gap, also it is provided with insulative glue 2 or insulation sheet rubber.
As shown in Figures 2 to 6, in some preferred embodiments, the shielding case splicing structure of microwave unreflected chamber also comprise be separately positioned on stitching portion inner side, outside non-ferromagnetic sheet of metallic material 301,302, loss layer 5 and screen layer 6 are compressed by the non-ferromagnetic sheet of metallic material 301,302 of inner side and outer side respectively and are covered in stitching portion, with the first concatenation unit of shielding case and the 2nd concatenation unit 1 close fit. Goodly, non-ferromagnetic sheet of metallic material 301,302 is aluminum or aluminum alloy.
In a further embodiment, non-ferromagnetic sheet of metallic material 301,302 can adopt riveted joint or bolt 4 mode of connection to be fastened on the first concatenation unit and the stitching portion of the 2nd concatenation unit 1. Riveted joint or bolt 4 are non-magnetic ferrous material, and bolt 4 can adopt expansion bolt.
As shown in Figures 2 to 4, the stitching portion of the first concatenation unit, the 2nd concatenation unit 1 can be positioned in the plane of shielding case, and now the first concatenation unit and the 2nd concatenation unit specifically can adopt following structure, formed and splice straightly.
As shown in Figure 2, in one embodiment, first concatenation unit and the 2nd concatenation unit 1 wear multiple rivet or bolt 4 near the position of stitching portion, by rivet or bolt 4, non-ferromagnetic sheet of metallic material 301,302 and loss layer 5, screen layer 6 is fastened on the first concatenation unit and the stitching portion of the 2nd concatenation unit 1.
As shown in Figure 3, in another kind of embodiment, the splicing gap of stitching portion wears rivet or bolt 4, by rivet or bolt 4, non-ferromagnetic sheet of metallic material 301,302 and loss layer 5, screen layer 6 are fastened on the first concatenation unit and the stitching portion of the 2nd concatenation unit 1, around rivet or bolt 4, it are filled with insulative glue 2.
As shown in Figure 4, in another embodiment, it is positioned at the non-ferromagnetic sheet of metallic material 302 outside stitching portion and there are two ends and (alleged " U shape " comprises the straight situation in bottom through the U-bend folding part in the splicing gap of stitching portion and loss layer 5 herein, as shown in Figure 4), two ends are pressed on the screen layer 6 in outside of the first concatenation unit and the 2nd concatenation unit 1 respectively, the bottom of U-bend folding part is tightened together with the non-ferromagnetic sheet of metallic material 301 of the inner side being positioned at stitching portion by rivet or bolt 4, insulative glue 2 it is filled with around U-bend folding part.
In addition, consult Fig. 5 to Fig. 6, the stitching portion of the first concatenation unit, the 2nd concatenation unit 1 can also be positioned on the corner of shielding case, now the first concatenation unit and the 2nd concatenation unit 1 are in stitching portion with the splicing of certain angle, and splicing angle can be acute angle, right angle or obtuse angle (Fig. 5 to Fig. 6 show right angle). Wherein, first concatenation unit is along first party to setting, described 2nd concatenation unit 1 is arranged along second direction, and described first concatenation unit is relative with the end face of described 2nd concatenation unit 1 or staggers, and has splicing gap between described first concatenation unit and described 2nd concatenation unit 1; Described screen layer 6 is arranged with the bending consistent with described angle and is covered on the outside of the outside of described first concatenation unit, the outer mouth in described splicing gap and described 2nd concatenation unit 1, and described loss layer 5 is arranged with the bending consistent with described angle and covered on the inner side of mouth and described 2nd concatenation unit 1 in the inner side of described first concatenation unit, described splicing gap.
When splicing angle is right angle, connecting method specifically can adopt following structure.
As shown in Figure 5, in one embodiment, first concatenation unit is vertically arranged, 2nd concatenation unit 1 is arranged in the horizontal direction, the end face of the first concatenation unit and the 2nd concatenation unit 1 is the vertical surface mutually staggered, the end face of the first concatenation unit is concordant with the upper surface of the 2nd concatenation unit 1, the end face of the 2nd concatenation unit 1 towards the first concatenation unit inner side and and the inner side of the first concatenation unit between there is splicing gap, it is preferable that splicing gap in be filled with insulative glue 2; Screen layer 6 covers on the upper surface of the outside of the first concatenation unit, the end face of the first concatenation unit, the splicing outer mouth in gap and the 2nd concatenation unit 1 with the layout of L-shaped, and loss layer 5 covers on the lower surface of mouth and the 2nd concatenation unit 1 in the inner side of the first concatenation unit, splicing gap with the layout of L-shaped. More preferably, rivet or bolt can be worn in the position water level land of close stitching portion on the first concatenation unit, 2nd concatenation unit 1 vertically wears rivet or bolt 4 near the position of stitching portion, by rivet or bolt 4, non-ferromagnetic sheet of metallic material 301,302 and loss layer 5, screen layer 6 is fastened on the first concatenation unit and the stitching portion of the 2nd concatenation unit 1.
As shown in Figure 6, in another kind of embodiment, first concatenation unit is vertically arranged, 2nd concatenation unit 1 is arranged in the horizontal direction, the end face of the first concatenation unit and the 2nd concatenation unit 1 is inclined-plane facing each other, so that the first concatenation unit and the 2nd concatenation unit 1 are connected for L-shaped by end face, there is between the end face of the first concatenation unit and the 2nd concatenation unit 1 splicing gap, it is preferable that in splicing gap, be filled with insulative glue 2; Screen layer 6 covers on the outside of the first concatenation unit, the outer mouth in splicing gap and the upper surface of the 2nd concatenation unit 1 with the layout of L-shaped, and loss layer 5 covers on the lower surface of mouth and the 2nd concatenation unit 1 in the inner side of the first concatenation unit, splicing gap with the layout of L-shaped. Equally, more preferably, rivet or bolt can be worn in the position water level land of close stitching portion on the first concatenation unit, 2nd concatenation unit 1 vertically wears rivet or bolt 4 near the position of stitching portion, by rivet or bolt 4, non-ferromagnetic sheet of metallic material 301,302 and loss layer 5, screen layer 6 is fastened on the first concatenation unit and the stitching portion of the 2nd concatenation unit 1.
It should be noted that, above-mentioned first concatenation unit and the 2nd concatenation unit " on ", D score position, " vertical direction ", " horizontal direction " etc. only set in order to convenient describing, only for limiting the first concatenation unit and the relative position of the 2nd concatenation unit, but not absolute location.
In some preferred embodiments, the inner side of the first concatenation unit and the 2nd concatenation unit 1 is also provided with absorbing material 7, and absorbing material 7 at least covers loss layer 5. The inner side entirety of shielding case concatenation unit can also be covered by absorbing material 7.
In another kind of embodiment of the present utility model, also providing a kind of microwave unreflected chamber, as shown in Figure 1, it can have the shielding case splicing structure of aforementioned any embodiment.
Above content combines concrete/preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations. For the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; its enforcement mode that can also these have been described makes some replacements or modification, and these substitute or variant all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. the shielding case splicing structure of a microwave unreflected chamber, comprise at least one pair of first concatenation unit and the 2nd concatenation unit of the mutual splicing with capability of electromagnetic shielding, it is characterized in that, described first concatenation unit and described 2nd concatenation unit at least outside surface be non-ferromagnetic metallic substance, described first concatenation unit and described 2nd concatenation unit splice in non-conduction mode, it is coated with loss layer in the inner side of stitching portion, outer side covers in stitching portion has screen layer, described loss layer is non magnetic absorbing material, and described screen layer is for shielding the hertzian wave from outside.
2. shielding case splicing structure as claimed in claim 1, it is characterised in that, described loss layer is for having elastic non magnetic absorbing material, or is suction ripple glue.
3. shielding case splicing structure as claimed in claim 1, it is characterised in that, described screen layer is the non-ferromagnetic metallic substance of the reticulated structure with electroconductibility and ductility.
4. shielding case splicing structure as claimed in claim 1, it is characterized in that, described splicing in non-conduction mode comprises: retain empty splicing gap in described stitching portion, at the splicing end face spray insulation paint of described first concatenation unit and described 2nd concatenation unit or arrange insulative glue or insulation film in the splicing gap of described stitching portion.
5. shielding case splicing structure as described in item as arbitrary in Claims 1-4, it is characterized in that, also comprising the non-ferromagnetic sheet of metallic material of the inner side and outer side being separately positioned on described stitching portion, described loss layer and described screen layer are compressed by the non-ferromagnetic sheet of metallic material of inner side and outer side respectively and are covered in described stitching portion.
6. shielding case splicing structure as claimed in claim 5, it is characterised in that, described stitching portion is positioned in the plane of described shielding case;
Wherein on described first concatenation unit and described 2nd concatenation unit, the position of close described stitching portion wears multiple rivet or bolt, so that described non-ferromagnetic sheet of metallic material to be fastened on the stitching portion of described first concatenation unit and described 2nd concatenation unit; Or
Wherein in the splicing gap of described stitching portion, wear rivet or bolt, described non-ferromagnetic sheet of metallic material to be fastened on the stitching portion of described first concatenation unit and described 2nd concatenation unit; Or
Wherein it is positioned at the non-ferromagnetic sheet of metallic material outside described stitching portion to there are two ends and pass the splicing gap of described stitching portion and the U-bend folding part of described loss layer, described two ends are pressed on the screen layer in the outside of described first concatenation unit and described 2nd concatenation unit respectively, and the bottom of described U-bend folding part is fixed together by the non-ferromagnetic sheet of metallic material of rivet or bolt with the inner side being positioned at described stitching portion;
Described rivet or bolt are non-magnetic ferrous material.
7. shielding case splicing structure as claimed in claim 5, it is characterized in that, described stitching portion is positioned on the corner of described shielding case, and the first concatenation unit described at least one pair of and described 2nd concatenation unit with the splicing of certain angle, the angle ranging from acute angle, right angle or obtuse angle in described stitching portion;
Wherein said first concatenation unit is along first party to setting, described 2nd concatenation unit is arranged along second direction, described first concatenation unit is relative with the end face of described 2nd concatenation unit or staggers, and has splicing gap between described first concatenation unit and described 2nd concatenation unit; Described screen layer is arranged with the bending consistent with described angle and is covered on the outside of the outside of described first concatenation unit, the outer mouth in described splicing gap and described 2nd concatenation unit, and described loss layer is arranged with the bending consistent with described angle and covered on the inner side of mouth and described 2nd concatenation unit in the inner side of described first concatenation unit, described splicing gap.
8. shielding case splicing structure as described in item as arbitrary in Claims 1-4, it is characterised in that, the inner side of described first concatenation unit and described 2nd concatenation unit is also provided with absorbing material, and described absorbing material at least covers described loss layer.
9. shielding case splicing structure as described in item as arbitrary in Claims 1-4, it is characterized in that, described first concatenation unit and/or described 2nd concatenation unit are sandwich board, and the core layer of described sandwich board is applied fireproofing, and the skin of described sandwich board is non-ferromagnetic metallic substance.
10. a microwave unreflected chamber, comprises shield shell, it is characterised in that, described shield shell has the shielding case splicing structure as described in item as arbitrary in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521035690.0U CN205276984U (en) | 2015-12-14 | 2015-12-14 | Microwave dark room and structure is assembled to shielding shell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521035690.0U CN205276984U (en) | 2015-12-14 | 2015-12-14 | Microwave dark room and structure is assembled to shielding shell thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205276984U true CN205276984U (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521035690.0U Withdrawn - After Issue CN205276984U (en) | 2015-12-14 | 2015-12-14 | Microwave dark room and structure is assembled to shielding shell thereof |
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| CN (1) | CN205276984U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386630A (en) * | 2015-12-14 | 2016-03-09 | 深圳市通用测试系统有限公司 | Microwave anechoic chamber and shielding case assembly structure thereof |
| CN114141154A (en) * | 2021-12-06 | 2022-03-04 | Tcl华星光电技术有限公司 | Tiled display device |
-
2015
- 2015-12-14 CN CN201521035690.0U patent/CN205276984U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386630A (en) * | 2015-12-14 | 2016-03-09 | 深圳市通用测试系统有限公司 | Microwave anechoic chamber and shielding case assembly structure thereof |
| CN105386630B (en) * | 2015-12-14 | 2017-10-24 | 深圳市通用测试系统有限公司 | A kind of microwave dark room and its shielding case splicing structure |
| CN114141154A (en) * | 2021-12-06 | 2022-03-04 | Tcl华星光电技术有限公司 | Tiled display device |
| CN114141154B (en) * | 2021-12-06 | 2023-06-02 | Tcl华星光电技术有限公司 | Spliced display device |
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