CN105386630A - Microwave anechoic chamber and shielding case assembly structure thereof - Google Patents
Microwave anechoic chamber and shielding case assembly structure thereof Download PDFInfo
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- CN105386630A CN105386630A CN201510925214.4A CN201510925214A CN105386630A CN 105386630 A CN105386630 A CN 105386630A CN 201510925214 A CN201510925214 A CN 201510925214A CN 105386630 A CN105386630 A CN 105386630A
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- E—FIXED CONSTRUCTIONS
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- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
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- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B2001/925—Protection against harmful electro-magnetic or radio-active radiations, e.g. X-rays
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Abstract
The invention discloses a shielding case assembly structure of a microwave anechoic chamber and the microwave anechoic chamber with the shielding case assembly structure. The shielding case assembly structure comprises one or more pairs of first splicing units and second splicing units all with the electromagnetic shielding property, wherein the first splicing units and the second splicing units are mutually spliced, at least the outer surfaces of the first splicing units and the outer surfaces of the second splicing units are made of non-ferromagnetic metal material, and the joints of the first splicing units and the second splicing units are spliced in a non-conduction mode. The inner sides of the joints are covered with loss layers, the outer sides of the joints are covered with shielding layers, the loss layers are made of non-magnetic wave-absorbing material, and the shielding layers are used for shielding external electromagnetic waves. The shielding case assembly structure can reliably avoid intermodulation interference and improve the property of shielding the electromagnetic waves.
Description
Technical field
The present invention relates to the technical field of measurement and test of the communications industry, particularly a kind of microwave dark room shielding case splicing structure and there is the microwave dark room of this shielding case splicing structure.
Background technology
Passive intermodulation (PassiveInter-Modulation is called for short PIM) is caused by the nonlinear characteristic of passive device various in emission system.In high-power, multichannel system, the non-linear more higher hamonic wave that can produce relative to operating frequency of these passive devices, these harmonic waves mix with operating frequency can produce one group of new frequency, and its final 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 dark room is generally made up of the equipment etc. such as bracing or strutting arrangement, antenna holder system of shield shell, dark-room door, absorbing material layer, the equipment under test be arranged in darkroom, when electromagnetic wave incident is to the absorbing material layer of microwave dark room, the electromagnetic wave of the overwhelming majority is absorbed, can for electromagnetic wave provide one to simulate free space and with the communication environments of external isolation, 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 dark room mostly is splicing structure, the connecting portion mode of welding or splicing that adopts is assembled more, wherein, welding can produce the uneven conductiving point such as burr and welding hole, and splicing can produce butt seam causes electromagnetic-wave leakage, when test antenna intermodulation index, all test error can be caused.In order to avoid this phenomenon, shield shell can adopt integrative-structure, but due to existing microwave dark room size all comparatively large, the shield shell of integrative-structure is difficult to realize and cost is very high.
Application number be 201220448233.4 Chinese patent literature disclose a kind of microwave dark room for intermodulation testing, the enclosure space that darkroom main body is made up of with the block wall be fixed thereon keel frame, block wall is provided with aluminium alloys screen layer on the surface in the face of the side of enclosure space, and the seam crossing 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 effectively can avoid the formation in the strong intermodulation source of darkroom large area, but, insulating coating in this structure is easily scratched by the edge of aluminium alloy plate and burr, cause aluminium alloys screen layer and the aluminium foil short circuit in shielding adhesive tape, in addition, because the seam crossing of screen layer exists gap, the intermodulation source from outside, darkroom can enter in darkroom causes Intermodulation Interference.
Summary of the invention
Main purpose of the present invention is to overcome the deficiencies in the prior art, provides a kind of shielding case splicing structure of microwave dark room and has the microwave dark room of this shielding case splicing structure, reliably avoids producing Intermodulation Interference, and improves shielding electromagnetic waves performance.
For achieving the above object, the present invention is by the following technical solutions:
A kind of shielding case splicing structure of microwave dark room, comprise at least one pair of first concatenation unit and second concatenation unit of the mutual splicing with capability of electromagnetic shielding, described first concatenation unit and described second concatenation unit at least external surface are non-ferromagnetic metal material, the stitching portion of described first concatenation unit and described second concatenation unit is spliced in non-conduction mode, depletion layer is coated with in the inner side of described stitching portion, screen layer is had in the outer side covers of described stitching portion, described depletion layer is can non magnetic absorbing material, described screen layer is for shielding the electromagnetic wave from outside.
Further:
Described depletion layer is for having flexible non magnetic absorbing material, and especially rubber inhales wave plate; Or for inhaling ripple glue.
Described screen layer is the non-ferromagnetic metal material with electric conductivity and ductility, is preferably copper or silver, is preferably arranged to net structure.
Described splicing in non-conduction mode comprises: retain in described stitching portion empty splicing gap, described first concatenation unit and described second concatenation unit splicing end face spray insulation paint or insulative glue or insulation film are set in the splicing gap of described stitching portion.
Described shielding case splicing structure also comprises the non-ferromagnetic metal material plate of the inner side and outer side being separately positioned on described stitching portion, and described depletion layer and described screen layer are compressed by the non-ferromagnetic metal material plate of inner side and outer side respectively and be covered in described stitching portion.Preferably, described non-ferromagnetic metal material plate is aluminum or aluminum alloy.
Described stitching portion is positioned in the plane of described shielding case;
Position wherein near described stitching portion on described first concatenation unit and described second concatenation unit wears multiple rivet or bolt, described non-ferromagnetic metal material plate to be fastened on the stitching portion of described first concatenation unit and described second concatenation unit; Or
Wherein in the splicing gap of described stitching portion, wear rivet or bolt, described non-ferromagnetic metal material plate to be fastened on the stitching portion of described first concatenation unit and described second concatenation unit; Or
The non-ferromagnetic metal material plate 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 depletion layer, described two ends are pressed on the screen layer in the outside of described first concatenation unit and described second concatenation unit respectively, and the bottom of described U-bend folding part is fixed together by the non-ferromagnetic metal material plate of rivet or bolt and the inner side that is 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 second 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 arranged along first direction, described second concatenation unit is arranged along second direction, described first concatenation unit is relative with the end face of described second concatenation unit or stagger, between described first concatenation unit and described second concatenation unit, have splicing gap; Described screen layer is arranged on the outside covering described first concatenation unit, the collar extension in described splicing gap and the outside of described second concatenation unit with the bending consistent with described angle, and described depletion layer is arranged on the inner side covering described first concatenation unit, the internal orifice in described splicing gap and the inner side of described second concatenation unit with the bending consistent with described angle;
Preferably, described first concatenation unit is vertically arranged, described second concatenation unit is arranged in the horizontal direction, the end face of described first concatenation unit and described second concatenation unit is the vertical plane mutually staggered, the end face of described first concatenation unit is concordant with the upper surface of described second concatenation unit, the end face of described second concatenation unit towards described first concatenation unit inner side and and between the inner side of described first concatenation unit, 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 collar extension in described splicing gap and described second concatenation unit with the layout of L shape, and described depletion layer covers on the soffit of the inner side of described first concatenation unit, the internal orifice in described splicing gap and described second concatenation unit with the layout of L shape; Or
Preferably, described first concatenation unit is vertically arranged, described second concatenation unit is arranged in the horizontal direction, the end face of described first concatenation unit and described second concatenation unit is inclined-plane facing each other, thus described first concatenation unit and described second concatenation unit are L shape by the transition and linkage of end face, have splicing gap between the end face of described first concatenation unit and described second concatenation unit; Described screen layer covers on the upper surface of the outside of described first concatenation unit, the collar extension in described splicing gap and described second concatenation unit with the layout of L shape, and described depletion layer covers on the soffit of the inner side of described first concatenation unit, the internal orifice in described splicing gap and described second concatenation unit with the layout of L shape.
The inner side of described first concatenation unit and described second concatenation unit is also provided with absorbing material, and described absorbing material at least covers described depletion layer.
Described first concatenation unit and/or described second concatenation unit are sandwiched plate, and the skin of described sandwiched plate is non-ferromagnetic metal material, such as aluminum or aluminum alloy, and the sandwich layer of described sandwiched plate is applied fireproofing.
A kind of microwave dark room, has any one shielding case splicing structure above-mentioned.
Beneficial effect of the present invention:
In the shielding case splicing structure that the present invention proposes, the first concatenation unit and the second concatenation unit splice in non-conduction mode, and shielding case concatenation unit at least external surface adopts non-ferromagnetic metal material, avoids the formation in the strong intermodulation source of darkroom large area.The depletion layer of non magnetic absorbing material is coated with in the inner side of stitching portion, screen layer is had in the outer side covers of stitching portion, depletion layer Absorbable rod stitching portion inside stitching portion is from inside and outside electromagnetic wave, the screen layer maskable in outside is from the electromagnetic wave of outside, and this 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 be directly contact, perhaps, electromagnetic wave from microwave dark room inside can produce intermodulation at screen layer place, but due to the absorption of depletion layer, arrive the electromagnetic wave the earth decay to the utmost at screen layer place, the intermodulation ripple produced is again through the absorption again of depletion layer, and the intermodulation ripple entering microwave dark room inside is very little.Shielding case splicing structure of the present invention is used for the darkroom of passive cross modulation test, reliably can avoids producing Intermodulation Interference, and improve shielding electromagnetic waves performance, improve measuring accuracy.
Preferred scheme can also obtain further advantage.
Such as, shielding case concatenation unit preferably adopts both sides to be the sandwiched plate of aluminum or aluminum alloy plate, can reduce darkroom weight, and reduce costs under the prerequisite ensureing darkroom intensity.
Retain in stitching portion empty splicing gap, the first concatenation unit and the second concatenation unit splicing end face spray insulation paint or insulative glue or insulation film are set in the splicing gap of stitching portion, the contiguous concatenation unit of shielding case does not directly connect, and avoids local intermodulation better.
By the non-ferromagnetic metal material plate being arranged on the inner side and outer side of stitching portion, depletion layer and screen layer are compressed covering by the non-ferromagnetic metal material plate of inner side and outer side respectively, with the concatenation unit close fit of shielding case, its contact 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 braced structures.
Absorbing material is covered on the splicing structure inside shielding case, and exposed splicing structure can be avoided to cause interference to test.
Accompanying drawing explanation
Fig. 1 is the exterior perspective view in the darkroom of an embodiment of the present invention;
Fig. 2 is the partial sectional view of shielding case splicing structure in a kind of embodiment at housing face place;
Fig. 3 is the partial sectional view of shielding case splicing structure in the another kind of embodiment at housing face place;
Fig. 4 is the partial sectional view of shielding case splicing structure in another embodiment at housing face place;
Fig. 5 is the partial sectional view of shielding case splicing structure in a kind of embodiment of housing edge;
Fig. 6 is the partial sectional view of shielding case splicing structure in the another kind of embodiment of housing edge.
Detailed description of the invention
Below embodiments of the present invention are elaborated.It is emphasized that following explanation is only exemplary, instead of in order to limit the scope of the invention and apply.
" non-ferromagnetic metal material " herein, referring to that its main component is not the metal material of ferrimagnet (as iron, cobalt, nickel), can be aluminium, aluminium alloys, copper alloy, stainless steel, titanium alloy, lithium alloy etc.
Consult Fig. 1 to Fig. 6, according to embodiments of the invention, a kind of shielding case splicing structure of microwave dark room, comprise at least one pair of first concatenation unit, second concatenation unit 1 of splicing mutually, first concatenation unit and the second concatenation unit 1 at least external surface are non-ferromagnetic metal material, first concatenation unit and the second concatenation unit 1 splice in non-conduction (i.e. open circuit) mode, depletion layer 5 is coated with in the inner side of stitching portion, screen layer 6 is had in the outer side covers of stitching portion, depletion layer 5 is non magnetic absorbing material, and screen layer 6 is for shielding the electromagnetic wave from outside.
Consult Fig. 2 to Fig. 6, in a preferred embodiment, depletion layer 5 is for having flexible non magnetic absorbing material, and such as rubber inhales wave plate, and for example inhales ripple glue, and depletion layer 5 Absorbable rod stitching portion, from inside and outside electromagnetic wave, is avoided producing intermodulation simultaneously.
It should be noted that, non magnetic absorbing material refers to that loss mechanism is the absorbing material by dielectric loss or resistance loss instead of magnetic loss.
Flexible depletion layer 5 with compacted in the inner side of stitching portion during shielding case close fit, thus effectively fills the gap of contact site.
Consult Fig. 2 to Fig. 6, because the first concatenation unit and the second concatenation unit 1 splice in non-conduction (i.e. open circuit) mode, splicing gap can be there is between the two, in order to shield the electromagnetic wave from outside at gap place, the also screen layer 6 in stitching portion arranged outside, screen layer 6 is metal material.In order to avoid producing intermodulation better, screen layer 6 is preferably non-ferromagnetic metal material.In a preferred embodiment, screen layer 6 is preferably good conductivity, good springiness and the good non-ferromagnetic metal material of ductility, 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 net structure, and it is convenient to calendering.
Consult Fig. 2 to Fig. 6, in a preferred embodiment, the first concatenation unit and/or the second concatenation unit 1 are sandwiched plate, and the skin 102 of sandwiched plate is non-ferromagnetic metal material, and be preferably aluminum or aluminum alloy, the sandwich layer 101 of sandwiched plate is applied fireproofing.When adopting sandwiched plate, the thickness of the metal outer of concatenation unit can be reduced to 0.5mm.
In one embodiment, the first concatenation unit and the second concatenation unit 1 can retain empty splicing gap in stitching portion, thus realize non-conduction mode and splice.
In another kind of preferred embodiment, can at the splicing end face spray insulation paint of the first concatenation unit and the second concatenation unit 1.
Consulting Fig. 2 to Fig. 6, in preferred embodiment, splicing except gap except having between the first concatenation unit and the second concatenation unit 1, in splicing gap, be also 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 dark room also comprise be separately positioned on stitching portion inner side, outside non-ferromagnetic metal material plate 301,302, depletion layer 5 and screen layer 6 are compressed by the non-ferromagnetic metal material plate 301,302 of inner side and outer side respectively and are covered in stitching portion, with the first concatenation unit and second concatenation unit 1 close fit of shielding case.Preferably, non-ferromagnetic metal material plate 301,302 is aluminum or aluminum alloy.
In a further embodiment, non-ferromagnetic metal material plate 301,302 can adopt riveted joint or bolt 4 connected mode to be fastened on the stitching portion of the first concatenation unit and the second 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 second concatenation unit 1 can be positioned in the plane of shielding case, and now the first concatenation unit and the second concatenation unit specifically can adopt following structure, are formed and splice straightly.
As shown in Figure 2, in one embodiment, first concatenation unit and the second concatenation unit 1 wear multiple rivet or bolt 4 near the position of stitching portion, by rivet or bolt 4, non-ferromagnetic metal material plate 301,302 and depletion layer 5, screen layer 6 is fastened on the stitching portion of the first concatenation unit and the second concatenation unit 1.
As shown in Figure 3, in another kind of embodiment, rivet or bolt 4 is worn in the splicing gap of stitching portion, by rivet or bolt 4, non-ferromagnetic metal material plate 301,302 and depletion layer 5, screen layer 6 are fastened on the stitching portion of the first concatenation unit and the second concatenation unit 1, around rivet or bolt 4, are filled with insulative glue 2.
As shown in Figure 4, in another embodiment, the non-ferromagnetic metal material plate 302 be positioned at outside stitching portion has two ends and (alleged " U-shaped " comprises the situation of bottom flat herein through the U-bend folding part of the splicing gap of stitching portion and depletion layer 5, as shown in Figure 4), two ends are pressed on the screen layer 6 in the outside of the first concatenation unit and the second concatenation unit 1 respectively, the bottom of U-bend folding part is tightened together with the non-ferromagnetic metal material plate 301 of the inner side being positioned at stitching portion by rivet or bolt 4, insulative glue 2 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 second concatenation unit 1 also can be positioned on the corner of shielding case, now the first concatenation unit and the second 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 is to Figure 6 shows that right angle).Wherein, first concatenation unit is arranged along first direction, described second concatenation unit 1 is arranged along second direction, and described first concatenation unit is relative with the end face of described second concatenation unit 1 or stagger, between described first concatenation unit and described second concatenation unit 1, have splicing gap; With the bending consistent with described angle, described screen layer 6 arranges that, on the outside covering described first concatenation unit, the collar extension in described splicing gap and the outside of described second concatenation unit 1, described depletion layer 5 is arranged on the inner side covering described first concatenation unit, the internal orifice in described splicing gap and the inner side of described second concatenation unit 1 with the bending consistent with described angle.
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, second concatenation unit 1 is arranged in the horizontal direction, the end face of the first concatenation unit and the second concatenation unit 1 is the vertical plane mutually staggered, the end face of the first concatenation unit is concordant with the upper surface of the second concatenation unit 1, the end face of the second concatenation unit 1 towards the first concatenation unit inner side and and between the inner side of the first concatenation unit, there is splicing gap, preferably in splicing gap, be filled with insulative glue 2; Screen layer 6 covers on the outside of the first concatenation unit, the end face of the first concatenation unit, the splicing collar extension in gap and the upper surface of the second concatenation unit 1 with the layout of L shape, and depletion layer 5 covers on the inner side of the first concatenation unit, the splicing internal orifice in gap and the soffit of the second concatenation unit 1 with the layout of L shape.More preferably, rivet or bolt can be worn in position water level land near stitching portion on the first concatenation unit, second concatenation unit 1 wears rivet or bolt 4 vertically near the position of stitching portion, by rivet or bolt 4, non-ferromagnetic metal material plate 301,302 and depletion layer 5, screen layer 6 is fastened on the stitching portion of the first concatenation unit and the second concatenation unit 1.
As shown in Figure 6, in another kind of embodiment, first concatenation unit is vertically arranged, second concatenation unit 1 is arranged in the horizontal direction, the end face of the first concatenation unit and the second concatenation unit 1 is inclined-plane facing each other, to make the first concatenation unit and the second concatenation unit 1 are connected for L shape by end face, between the end face of the first concatenation unit and the second concatenation unit 1, there is splicing gap, preferably in splicing gap, be filled with insulative glue 2; Screen layer 6 with the layout of L shape cover the first concatenation unit outside, splicing the collar extension in gap and the upper surface of the second concatenation unit 1 on, depletion layer 5 with the layout of L shape cover the first concatenation unit inner side, splicing the internal orifice in gap and the soffit of the second concatenation unit 1 on.Equally, more preferably, rivet or bolt can be worn in position water level land near stitching portion on the first concatenation unit, second concatenation unit 1 wears rivet or bolt 4 vertically near the position of stitching portion, by rivet or bolt 4, non-ferromagnetic metal material plate 301,302 and depletion layer 5, screen layer 6 is fastened on the stitching portion of the first concatenation unit and the second concatenation unit 1.
It should be noted that, above-mentioned first concatenation unit and the second concatenation unit " on ", D score position, " vertical direction ", " horizontal direction " etc. be only conveniently describe and set, only for limiting the relative position of the first concatenation unit and the second concatenation unit, but not absolute position.
In some preferred embodiments, the inner side of the first concatenation unit and the second concatenation unit 1 is also provided with absorbing material 7, and absorbing material 7 at least covers depletion layer 5.The inner side of shielding case concatenation unit entirety also can cover by absorbing material 7.
In another embodiment of the invention, also provide a kind of microwave dark room, as shown in Figure 1, it can have the shielding case splicing structure of aforementioned any embodiment.
Above content combines concrete/preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; its embodiment that can also describe these makes some substituting or modification, and these substitute or variant all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. the shielding case splicing structure of a microwave dark room, comprise at least one pair of first concatenation unit and second concatenation unit of the mutual splicing with capability of electromagnetic shielding, it is characterized in that, described first concatenation unit and described second concatenation unit at least external surface are non-ferromagnetic metal material, described first concatenation unit and described second concatenation unit splice in non-conduction mode, depletion layer is coated with in the inner side of stitching portion, screen layer is had in the outer side covers of stitching portion, described depletion layer is non magnetic absorbing material, and described screen layer is for shielding the electromagnetic wave from outside.
2. shielding case splicing structure as claimed in claim 1, is characterized in that, described depletion layer is for having flexible non magnetic absorbing material, and especially rubber inhales wave plate; Or for inhaling ripple glue.
3. shielding case splicing structure as claimed in claim 1, it is characterized in that, described screen layer is the non-ferromagnetic metal material with electric conductivity and ductility, is preferably copper or silver, is preferably arranged to net structure.
4. shielding case splicing structure as claimed in claim 1, it is characterized in that, described splicing in non-conduction mode comprises: retain in described stitching portion empty splicing gap, described first concatenation unit and described second concatenation unit splicing end face spray insulation paint or insulative glue or insulation film are set in the splicing gap of described stitching portion.
5. the shielding case splicing structure as described in any one of Claims 1-4, it is characterized in that, also comprise the non-ferromagnetic metal material plate of the inner side and outer side being separately positioned on described stitching portion, described depletion layer and described screen layer are compressed by the non-ferromagnetic metal material plate of inner side and outer side respectively and are covered in described stitching portion, preferably, described non-ferromagnetic metal material plate is aluminum or aluminum alloy.
6. shielding case splicing structure as claimed in claim 5, it is characterized in that, described stitching portion is positioned in the plane of described shielding case;
Position wherein near described stitching portion on described first concatenation unit and described second concatenation unit wears multiple rivet or bolt, described non-ferromagnetic metal material plate to be fastened on the stitching portion of described first concatenation unit and described second concatenation unit; Or
Wherein in the splicing gap of described stitching portion, wear rivet or bolt, described non-ferromagnetic metal material plate to be fastened on the stitching portion of described first concatenation unit and described second concatenation unit; Or
The non-ferromagnetic metal material plate be wherein positioned at outside described stitching portion has two ends and passes the splicing gap of described stitching portion and the U-bend folding part of described depletion layer, described two ends are pressed on the screen layer in the outside of described first concatenation unit and described second concatenation unit respectively, and the bottom of described U-bend folding part is fixed together by the non-ferromagnetic metal material plate of rivet or bolt and the inner side that is 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 second 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 arranged along first direction, described second concatenation unit is arranged along second direction, described first concatenation unit is relative with the end face of described second concatenation unit or stagger, between described first concatenation unit and described second concatenation unit, have splicing gap; Described screen layer is arranged on the outside covering described first concatenation unit, the collar extension in described splicing gap and the outside of described second concatenation unit with the bending consistent with described angle, and described depletion layer is arranged on the inner side covering described first concatenation unit, the internal orifice in described splicing gap and the inner side of described second concatenation unit with the bending consistent with described angle;
Preferably, described first concatenation unit is vertically arranged, described second concatenation unit is arranged in the horizontal direction, the end face of described first concatenation unit and described second concatenation unit is the vertical plane mutually staggered, the end face of described first concatenation unit is concordant with the upper surface of described second concatenation unit, the end face of described second concatenation unit towards described first concatenation unit inner side and and between the inner side of described first concatenation unit, 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 collar extension in described splicing gap and described second concatenation unit with the layout of L shape, and described depletion layer covers on the soffit of the inner side of described first concatenation unit, the internal orifice in described splicing gap and described second concatenation unit with the layout of L shape; Or
Preferably, described first concatenation unit is vertically arranged, described second concatenation unit is arranged in the horizontal direction, the end face of described first concatenation unit and described second concatenation unit is inclined-plane facing each other, to make described first concatenation unit and described second concatenation unit are connected for L shape by end face, between the end face of described first concatenation unit and described second concatenation unit, there is splicing gap; Described screen layer covers on the upper surface of the outside of described first concatenation unit, the collar extension in described splicing gap and described second concatenation unit with the layout of L shape, and described depletion layer covers on the soffit of the inner side of described first concatenation unit, the internal orifice in described splicing gap and described second concatenation unit with the layout of L shape.
8. the shielding case splicing structure as described in any one of claim 1 to 7, is characterized in that, the inner side of described first concatenation unit and described second concatenation unit is also provided with absorbing material, and described absorbing material at least covers described depletion layer.
9. the shielding case splicing structure as described in any one of claim 1 to 8, it is characterized in that, described first concatenation unit and/or described second concatenation unit are sandwiched plate, the sandwich layer of described sandwiched plate is applied fireproofing, the skin of described sandwiched plate is non-ferromagnetic metal material, and the skin of described sandwiched plate is preferably aluminum or aluminum alloy.
10. a microwave dark room, is characterized in that, has the shielding case splicing structure as described in any one of claim 1 to 9.
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| CN201510925214.4A CN105386630B (en) | 2015-12-14 | 2015-12-14 | A kind of microwave dark room and its shielding case splicing structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105929254A (en) * | 2016-04-28 | 2016-09-07 | 上海华为技术有限公司 | Microwave darkroom |
| CN109208770A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of radiation protection sound absorbing plate |
| CN112087252A (en) * | 2020-08-06 | 2020-12-15 | 航天科工空间工程发展有限公司 | Microwave hidden wall |
| JP2021100016A (en) * | 2019-12-20 | 2021-07-01 | 株式会社巴コーポレーション | Mounting structure of radio wave absorber |
| CN113463797A (en) * | 2021-09-03 | 2021-10-01 | 山东大华医特环保工程有限公司 | Pin-connected panel cuts off structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105929254A (en) * | 2016-04-28 | 2016-09-07 | 上海华为技术有限公司 | Microwave darkroom |
| CN105929254B (en) * | 2016-04-28 | 2019-04-19 | 上海华为技术有限公司 | A kind of microwave dark room |
| CN109208770A (en) * | 2017-06-30 | 2019-01-15 | 北新集团建材股份有限公司 | A kind of radiation protection sound absorbing plate |
| JP2021100016A (en) * | 2019-12-20 | 2021-07-01 | 株式会社巴コーポレーション | Mounting structure of radio wave absorber |
| JP7090063B2 (en) | 2019-12-20 | 2022-06-23 | 株式会社巴コーポレーション | Mounting structure of radio wave absorber |
| CN112087252A (en) * | 2020-08-06 | 2020-12-15 | 航天科工空间工程发展有限公司 | Microwave hidden wall |
| CN113463797A (en) * | 2021-09-03 | 2021-10-01 | 山东大华医特环保工程有限公司 | Pin-connected panel cuts off structure |
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