CN105386630B - A kind of microwave dark room and its shielding case splicing structure - Google Patents
A kind of microwave dark room and its shielding case splicing structure Download PDFInfo
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- CN105386630B CN105386630B CN201510925214.4A CN201510925214A CN105386630B CN 105386630 B CN105386630 B CN 105386630B CN 201510925214 A CN201510925214 A CN 201510925214A CN 105386630 B CN105386630 B CN 105386630B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
- E04H9/16—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 against adverse conditions, e.g. extreme climate, pests
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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
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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 kind of shielding case splicing structure of microwave dark room and the microwave dark room with the shielding case splicing structure, the shielding case splicing structure includes at least one pair of first concatenation unit and the second concatenation unit of the mutual splicing with capability of electromagnetic shielding, first concatenation unit and second concatenation unit at least outer surface are non-ferromagnetic metal material, spliced in non-conduction mode the stitching portion of first concatenation unit and second concatenation unit, the stitching portion inner side covered with depletion layer, outer side covers in the stitching portion have screen layer, the depletion layer is non magnetic absorbing material, the screen layer is used to shield from outside electromagnetic wave.The shielding case splicing structure of the present invention can reliably avoid producing Intermodulation Interference, and improve to shielding electromagnetic waves performance.
Description
Technical field
The present invention relates to the technical field of measurement and test of the communications industry, the shielding case splicing structure of particularly a kind of microwave dark room with
And the microwave dark room with the shielding case splicing structure.
Background technology
Passive intermodulation (Passive Inter-Modulation, abbreviation PIM) is the various passive devices in emission system
Nonlinear characteristic caused by.In high-power, multichannel system, the non-linear of these passive devices can be produced relative to work
The higher order harmonics of frequency, these harmonic waves are mixed with working frequency can produce one group of new frequency, and its final result is exactly in sky
Between in one group of useless frequency spectrum is produced to influence normal communication.
In passive device (antenna, cable etc.), passive intermodulation Producing reason mainly includes three aspects：Bad machinery
Node, the hysteresis characteristic of material and surface or contact surface are contaminated.
Microwave dark room it is general by shield shell, dark-room door, absorbing material layer, equipment under test in darkroom support
Equipment such as device, antenna holder system etc. are constituted, most when the absorbing material layer of electromagnetic wave incident to microwave dark room
Electromagnetic wave is absorbed, and a simulation free space and the communication environments being isolated from the outside can be provided for electromagnetic wave, be can be applied to
Many fields such as antenna, target RCS feature measurements, electromagnetic compatibility test and electronics l-G simulation test.
At present, the shield shell of traditional microwave dark room is generally splicing structure, using welding or splicing more than connecting portion
Mode is assembled, wherein, welding can produce the uneven conductiving point such as burr and welding hole, and splicing can produce butt seam and cause
Electromagnetic-wave leakage, when testing antenna intermodulation index, can cause test error.In order to avoid this phenomenon, shield shell can
To use integrative-structure, but because existing microwave dark room size is all larger, the shield shell of integrative-structure be difficult to and into
This is very high.
The Chinese patent literature of Application No. 201220448233.4 discloses a kind of microwave dark room for intermodulation testing,
The closing space that darkroom main body is made up of keel frame and the block wall being fixed thereon, block wall is empty in face of closing
Between a side surface be provided with aluminium alloy screen layer, the seam crossing of screen layer is provided with shielding adhesive tape.Shield adhesive tape material be with
The aluminum foil material of insulating coating, it is seam is not exposed directly that it, which is acted on, and its material is the aluminum foil material with insulating coating.This
One assembling mode can be prevented effectively from the formation in the strong intermodulation source of darkroom large area, however, the insulating coating in this structure is easily by aluminium
The edge and burr of alloy sheets are scratched, and cause aluminium alloy screen layer and the aluminium foil short circuit in shielding adhesive tape, further, since screen layer
Seam crossing there is gap, the intermodulation source outside darkroom can enter darkroom in causes Intermodulation Interference.
The content of the invention
It is a primary object of the present invention to overcome the deficiencies in the prior art, there is provided a kind of shielding case of microwave dark room assembly knot
Structure and the microwave dark room with the shielding case splicing structure, reliably avoid producing Intermodulation Interference, and improve to electromagnetic wave
Shielding properties.
To achieve the above object, the present invention uses following technical scheme：
A kind of shielding case splicing structure of microwave dark room, includes at least one pair of of the mutual splicing with capability of electromagnetic shielding
First concatenation unit and the second concatenation unit, first concatenation unit and second concatenation unit at least outer surface are non-ferric
The stitching portion of magnetic metal material, first concatenation unit and second concatenation unit is spliced in non-conduction mode, described
The inner side of stitching portion is covered with depletion layer, and the outer side covers in the stitching portion have screen layer, and the depletion layer is can be non magnetic
Absorbing material, the screen layer is used to shield from outside electromagnetic wave.
Further：
The depletion layer is that flexible non magnetic absorbing material, especially rubber inhale wave plate；Or to inhale ripple glue.
The screen layer is the conductive non-ferromagnetic metal material with ductility, preferably copper or silver, is preferably provided with
Reticulate structure.
It is described with non-conduction mode splice including：Retain empty splicing gap in the stitching portion, in the described first splicing
The splicing end face spray insulation paint or the setting insulation in the splicing gap of the stitching portion of unit and second concatenation unit
Glue or insulation film.
The shielding case splicing structure also includes the non-ferromagnetic metal for being separately positioned on the inner side and outer side of the stitching portion
Plate of material, the depletion layer and the screen layer are covered in described by the non-ferromagnetic metal material plate compression of inner side and outer side respectively
Stitching portion.Preferably, the non-ferromagnetic metal material plate is aluminum or aluminum alloy.
The stitching portion is located in the plane of the shielding case；
Position close to the stitching portion wherein on first concatenation unit and second concatenation unit wears many
Individual rivet or bolt, first concatenation unit and second concatenation unit are fastened on by the non-ferromagnetic metal material plate
Stitching portion；Or
Rivet or bolt wherein are worn in the splicing gap of the stitching portion, the non-ferromagnetic metal material plate is tight
Gu in the stitching portion of first concatenation unit and second concatenation unit；Or
Non-ferromagnetic metal material plate wherein positioned at the outside of the stitching portion has two ends and through the splicing
The splicing gap and the U-bend folding part of the depletion layer at place, described two ends are pressed over first concatenation unit respectively
On the screen layer in the outside of second concatenation unit, the bottom of the U-bend folding part is by rivet or bolt and positioned at institute
The non-ferromagnetic metal material plate for stating the inner side of stitching portion is fixed together；
The rivet or bolt are non-magnetic ferrous material.
The stitching portion is located on the corner of the shielding case, and at least one pair of described first concatenation unit and described second is spelled
Order member is spliced at an angle in the stitching portion, the angle ranging from acute angle, right angle or obtuse angle；
Wherein described first concatenation unit is set in the first direction, and second concatenation unit is set in a second direction, institute
The end face for stating the first concatenation unit and second concatenation unit is relative or stagger, in first concatenation unit and described second
There is splicing gap between concatenation unit；The screen layer is covered in described first with the bending arrangement consistent with the angle and spelled
On the outside of order member, the outside of the collar extension in the splicing gap and second concatenation unit, the depletion layer with institute
State the bending arrangement of angle unanimously and be covered in the inner side of first concatenation unit, the internal orifice in the splicing gap and described
On the inner side of second concatenation unit；
Preferably, first concatenation unit is vertically set, and second concatenation unit is horizontally disposed,
The end face of first concatenation unit and second concatenation unit is the vertical plane mutually staggered, first concatenation unit
End face is concordant with the upper surface of second concatenation unit, and the end face of second concatenation unit is towards first concatenation unit
Inner side and between the inner side of first concatenation unit have splicing gap；The screen layer is covered in the arrangement of L-shaped
The outside of first concatenation unit, the end face of first concatenation unit, the collar extension in the splicing gap and described second
On the upper surface of concatenation unit, the depletion layer is covered in the inner side of first concatenation unit, the splicing with the arrangement of L-shaped
On the lower surface of the internal orifice in gap and second concatenation unit；Or
Preferably, first concatenation unit is vertically set, and second concatenation unit is horizontally disposed,
The end face of first concatenation unit and second concatenation unit is inclined-plane facing each other, so that first concatenation unit
The transition and linkage for passing through end face with second concatenation unit is L-shaped, first concatenation unit and second concatenation unit
End face between have splicing gap；The screen layer is covered in the outside, described of first concatenation unit with the arrangement of L-shaped
Splice on the collar extension in gap and the upper surface of second concatenation unit, the depletion layer is covered in described with the arrangement of L-shaped
On the lower surface of the inner side of first concatenation unit, the internal orifice in the splicing gap and second concatenation unit.
Absorbing material, the absorbing material are additionally provided with the inside of first concatenation unit and second concatenation unit
At least cover the depletion layer.
First concatenation unit and/or second concatenation unit are battenboard, and the outer layer of the battenboard is non-ferric
Magnetic metal material, such as aluminum or aluminum alloy, the sandwich layer of the battenboard is applied fireproofing.
A kind of microwave dark room, with any of the above-described kind of shielding case splicing structure.
Beneficial effects of the present invention：
In shielding case splicing structure proposed by the present invention, the first concatenation unit and the second concatenation unit are spelled in non-conduction mode
Connect, shielding case concatenation unit at least outer surface uses non-ferromagnetic metal material, it is to avoid the formation in the strong intermodulation source of darkroom large area.
Depletion layer of the inner side of stitching portion covered with non magnetic absorbing material, the outer side covers in stitching portion have in screen layer, stitching portion
The depletion layer of side can absorb stitching portion from inside and outside electromagnetic wave, and the screen layer in outside is maskable from outside electromagnetism
Ripple, this splicing construction can be prevented effectively from causes local intermodulation because of connecting undesirable.Even if moreover, the screen layer of outer layer
It is directly to contact between the concatenation unit of shielding case, perhaps the electromagnetic wave inside microwave dark room can produce at screen layer
Intermodulation, but due to the absorption of depletion layer, reach the electromagnetic wave at screen layer and greatly decay, the mutual harmonic of generation is again by damaging
The absorption again of layer is consumed, it is very little into the mutual harmonic inside microwave dark room.The shielding case splicing structure of the present invention is used for
The darkroom of passive cross modulation test, can reliably avoid producing Intermodulation Interference, and improve to shielding electromagnetic waves performance, improve and survey
Try precision.
It is preferred that scheme can also obtain further advantage.
For example, shielding case concatenation unit is preferred to use the battenboard that both sides are aluminum or aluminum alloy plate, it can ensure that darkroom is strong
Darkroom weight is reduced on the premise of degree, and reduces cost.
Retain in stitching portion empty splicing gap, the first concatenation unit and the second concatenation unit the spraying of splicing end face it is exhausted
Edge paint sets insulative glue or insulation film in the splicing gap of stitching portion, and the contiguous concatenation unit of shielding case is not direct
Connection, preferably avoids local intermodulation.
By be arranged on stitching portion inner side and outer side non-ferromagnetic metal material plate by depletion layer and screen layer respectively by
The non-ferromagnetic metal material plate of inner side and outer side, which is compressed, to be covered, the concatenation unit close fit with shielding case, and its contact can
Avoid the presence of gap.
The structure design of stitching portion can play a supporting role in a preferred embodiment, it is to avoid darkroom uses extra support knot
Structure.
Absorbing material is covered on the splicing structure on the inside of shielding case, and exposed splicing structure can be avoided to cause test
Interference.
Brief description of the drawings
Fig. 1 is the exterior perspective view in the darkroom of an embodiment of the present invention；
Fig. 2 is a kind of partial sectional view of embodiment of the shielding case splicing structure at housing face；
Fig. 3 is the partial sectional view of another embodiment of the shielding case splicing structure at housing face；
Fig. 4 is the partial sectional view of another embodiment of the shielding case splicing structure at housing face；
Fig. 5 is partial sectional view of the shielding case splicing structure in a kind of embodiment of housing edge；
Fig. 6 is partial sectional view of the shielding case splicing structure in another embodiment of housing edge.
Embodiment
Embodiments of the present invention are elaborated below.It is emphasized that what the description below was merely exemplary,
The scope being not intended to be limiting of the invention and its application.
" non-ferromagnetic metal material " herein, it is not the gold of ferrimagnet (such as iron, cobalt, nickel) to refer to its main component
Belong to material, can be aluminium, aluminium alloy, copper alloy, stainless steel, titanium alloy, lithium alloy etc..
Refering to Fig. 1 to Fig. 6, embodiments in accordance with the present invention, a kind of shielding case splicing structure of microwave dark room, including it is mutual
At least one pair of first concatenation unit of splicing, the second concatenation unit 1, the first concatenation unit and the second concatenation unit 1 at least appearance
Face is non-ferromagnetic metal material, and the first concatenation unit and the second concatenation unit 1 are spliced in non-conduction (i.e. breaking) mode, in splicing
The inner side at place is covered with depletion layer 5, and the outer side covers in stitching portion have screen layer 6, and depletion layer 5 is non magnetic absorbing material, screen
Cover layer 6 be used for shield from outside electromagnetic wave.
Refering to Fig. 2 to Fig. 6, in a preferred embodiment, depletion layer 5 is flexible non magnetic absorbing material, for example
Rubber inhales wave plate, and for example inhales ripple glue, and depletion layer 5 can absorb stitching portion from inside and outside electromagnetic wave, while avoiding production
Raw intermodulation.
It should be noted that non magnetic absorbing material refer to loss mechanisms be by dielectric loss or resistance loss rather than
The absorbing material of magnetic loss.
It is compacted when the depletion layer 5 of elasticity is with shielding case close fit on the inside of stitching portion, so that effectively filling contact
The gap at position.
Refering to Fig. 2 to Fig. 6, because the first concatenation unit and the second concatenation unit 1 are spliced in non-conduction (i.e. breaking) mode,
Splicing gap may be present between the two, in order to which shielding, from outside electromagnetic wave, is provided with also on the outside of stitching portion at gap
Screen layer 6, screen layer 6 is metal material.In order to preferably avoid producing intermodulation, screen layer 6 is preferably non-ferromagnetic metal material.
In a preferred embodiment, screen layer 6 is preferably good conductivity, elastic good and the good non-ferromagnetic metal material of ductility, such as copper
Or silver.So as to which its contact surface in the concatenation unit close fit of outside and shielding case of screen layer 6 can be compressed well.It is more excellent
Selection of land, screen layer 6 uses network structure, and it is easy to calendering.
Refering to Fig. 2 to Fig. 6, in a preferred embodiment, the first concatenation unit and/or the second concatenation unit 1 are battenboard,
The outer layer 102 of battenboard is non-ferromagnetic metal material, preferably aluminum or aluminum alloy, and the sandwich layer 101 of battenboard is fire protection flame retarding material
Material.When using battenboard, 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 be between the splicings that stitching portion retains sky
Gap, so as to realize that non-conduction mode is spliced.
In another preferred embodiment, it can be sprayed in the splicing end face of the first concatenation unit and the second concatenation unit 1
Apply insulated paint.
Refering to Fig. 2 to Fig. 6, in preferred embodiment, except having between the first concatenation unit and the second concatenation unit 1
Splice outside gap, insulative glue 2 or insulation sheet rubber are additionally provided with splicing gap.
As shown in Figures 2 to 6, in some preferred embodiments, the shielding case splicing structure of microwave dark room also includes dividing
Inner side, the non-ferromagnetic metal material plate 301,302 in outside of stitching portion are not arranged on, and depletion layer 5 and screen layer 6 are respectively by inner side
Compressed with the non-ferromagnetic metal material plate 301,302 in outside and be covered in stitching portion, with the first concatenation unit of shielding case and second
The close fit of concatenation unit 1.It is preferred that non-ferromagnetic metal material plate 301,302 is aluminum or aluminum alloy.
In a further embodiment, non-ferromagnetic metal material plate 301,302 can be using riveting or the connected mode of bolt 4
It is fastened on the stitching portion of the first concatenation unit and the second concatenation unit 1.Rivet or bolt 4 is non-magnetic ferrous material, bolt 4 can
Using expansion bolt.
As shown in Figures 2 to 4, the first concatenation unit, the stitching portion of the second concatenation unit 1 can be positioned at the flat of shielding case
On face, now the first concatenation unit and the second concatenation unit can specifically use following structure, and formation is spliced straightly.
As shown in Fig. 2 in one embodiment, close to stitching portion on the first concatenation unit and the second concatenation unit 1
Position wears multiple rivets or bolt 4, by rivet or bolt 4 by non-ferromagnetic metal material plate 301,302 and depletion layer 5, screen
Cover the stitching portion that layer 6 is fastened on the first concatenation unit and the second concatenation unit 1.
As shown in figure 3, in another embodiments, rivet or bolt 4 being worn in the splicing gap of stitching portion, passes through riveting
Non-ferromagnetic metal material plate 301,302 and depletion layer 5, screen layer 6 are fastened on the first concatenation unit and second and spelled by nail or bolt 4
The stitching portion of order member 1, is filled with insulative glue 2 around rivet or bolt 4.
As shown in figure 4, in another embodiment, the non-ferromagnetic metal material plate 302 on the outside of stitching portion has two
Individual end and through stitching portion splicing gap and depletion layer 5 U-bend folding part (herein referred " U-shaped " include bottom flat
Situation, as shown in Figure 4), two ends are pressed over the screen layer in the outside of the first concatenation unit and the second concatenation unit 1 respectively
On 6, the bottom of U-bend folding part is fastened by rivet or bolt 4 and the non-ferromagnetic metal material plate 301 of the inner side positioned at stitching portion
Together, insulative glue 2 is filled with around U-bend folding part.
In addition, refering to Fig. 5 to Fig. 6, the first concatenation unit, the stitching portion of the second concatenation unit 1 can also be located at shielding
On the corner of shell, now the first concatenation unit and the second concatenation unit 1 splice at an angle in stitching portion, and splicing angle can
Think acute angle, right angle or obtuse angle (Fig. 5 to Fig. 6 show right angle).Wherein, the first concatenation unit is set in the first direction, described
Second concatenation unit 1 is set in a second direction, the end face phase right or wrong of first concatenation unit and second concatenation unit 1
Open, there is splicing gap between first concatenation unit and second concatenation unit 1；The screen layer 6 with it is described
The bending arrangement of angle unanimously is covered in the outside of first concatenation unit, the collar extension in the splicing gap and described the
On the outside of two concatenation units 1, it is single that the depletion layer 5 is covered in first splicing with the bending arrangement consistent with the angle
On the inner side of member, the inner side of the internal orifice in the splicing gap and second concatenation unit 1.
When splicing angle for right angle, connecting method can specifically use following structure.
As shown in figure 5, in one embodiment, the first concatenation unit is vertically set, the second concatenation unit 1 is along water
Square to setting, the end face of the first concatenation unit and the second concatenation unit 1 is the vertical plane mutually staggered, the first concatenation unit
End face is concordant with the upper surface of the second concatenation unit 1, the end face of the second concatenation unit 1 towards the inner side of the first concatenation unit and with
There is splicing gap between the inner side of first concatenation unit, preferably insulative glue 2 is filled with splicing gap；Screen layer 6 is with L
The arrangement of shape is covered in outside, the end face of the first concatenation unit, the collar extension for splicing gap and the second spelling of the first concatenation unit
On the upper surface of order member 1, depletion layer 5 be covered in the arrangement of L-shaped the first concatenation unit inner side, splice gap internal orifice,
And second concatenation unit 1 lower surface on.It is highly preferred that can on the first concatenation unit close to stitching portion position level
Ground wears rivet or bolt, and the position close to stitching portion on the second concatenation unit 1 vertically wears rivet or bolt 4, passes through
Non-ferromagnetic metal material plate 301,302 and depletion layer 5, screen layer 6 are fastened on the first concatenation unit and second by rivet or bolt 4
The stitching portion of concatenation unit 1.
As shown in fig. 6, in another embodiment, the first concatenation unit is vertically set, the edge of the second concatenation unit 1
Horizontally arranged, the end face of the first concatenation unit and the second concatenation unit 1 is inclined-plane facing each other, so that the first splicing is single
Member and the second concatenation unit 1 are L-shaped by end face linking, are had between the first concatenation unit and the end face of the second concatenation unit 1
Splice gap, be preferably filled with insulative glue 2 in splicing gap；Screen layer 6 is covered in the first concatenation unit with the arrangement of L-shaped
Outside, splice on the collar extension in gap and the upper surface of the second concatenation unit 1, depletion layer 5 is covered in the with the arrangement of L-shaped
On the lower surface of the inner side of one concatenation unit, the internal orifice for splicing gap and the second concatenation unit 1.Equally, it is highly preferred that can
Rivet or bolt are flatly worn with the position close to stitching portion on the first concatenation unit, it is close on the second concatenation unit 1
The position of stitching portion vertically wears rivet or bolt 4, by rivet or bolt 4 by 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.
It should be noted that " on ", " under " position, " the vertical side of above-mentioned first concatenation unit and the second concatenation unit
To ", the narration merely for convenience such as " horizontal direction " and set, be only used for limiting the first concatenation unit and the second concatenation unit
Relative position, rather than absolute position.
In some preferred embodiments, the inner side of the first concatenation unit and the second concatenation unit 1 is additionally provided with suction ripple material
Material 7, absorbing material 7 at least covers depletion layer 5.Absorbing material 7 can also integrally cover the inner side of shielding case concatenation unit.
In another embodiment of the invention, a kind of microwave dark room is also provided, as shown in figure 1, its can have it is foregoing
The shielding case splicing structure of any embodiment.
Above content is to combine specific/preferred embodiment made for the present invention be further described, it is impossible to recognized
The specific implementation of the fixed present 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, it can also make some replacements or modification to the embodiment that these have been described,
And these are substituted or variant should all be considered as belonging to protection scope of the present invention.
Claims (18)
1. a kind of shielding case splicing structure of microwave dark room, including the mutual splicing with capability of electromagnetic shielding at least one pair of
One concatenation unit and the second concatenation unit, it is characterised in that first concatenation unit and second concatenation unit are at least outer
Surface is non-ferromagnetic metal material, and first concatenation unit and second concatenation unit are spliced in non-conduction mode, is being spelled
The inner side at place is connect covered with depletion layer, the outer side covers in stitching portion have screen layer, the depletion layer is non magnetic absorbing material,
The screen layer is used to shield from outside electromagnetic wave, and the screen layer is non-ferromagnetic metal material, and the depletion layer absorbs
Electromagnetic wave described in directive inside microwave dark room at screen layer, and absorb the issuable directive at the screen layer
Mutual harmonic inside microwave dark room.
2. shielding case splicing structure as claimed in claim 1, it is characterised in that the depletion layer is flexible non magnetic
Absorbing material.
3. shielding case splicing structure as claimed in claim 2, it is characterised in that the flexible non magnetic absorbing material
Wave plate is inhaled for rubber.
4. shielding case splicing structure as claimed in claim 1, it is characterised in that the depletion layer is suction ripple glue.
5. shielding case splicing structure as claimed in claim 1, it is characterised in that the screen layer is conductive and extension
The non-ferromagnetic metal material of property.
6. shielding case splicing structure as claimed in claim 5, it is characterised in that the screen layer is copper or silver.
7. shielding case splicing structure as claimed in claim 5, it is characterised in that the screen layer is arranged to network structure.
8. shielding case splicing structure as claimed in claim 1, it is characterised in that it is described with non-conduction mode splice including：
The stitching portion retains empty splicing gap, the splicing end face spraying in first concatenation unit and second concatenation unit
Insulated paint sets insulative glue or insulation film in the splicing gap of the stitching portion.
9. the shielding case splicing structure as described in any one of claim 1 to 8, it is characterised in that also including being separately positioned on
The non-ferromagnetic metal material plate of the inner side and outer side of stitching portion is stated, the depletion layer and the screen layer are respectively by inner side and outer side
Non-ferromagnetic metal material plate compress be covered in the stitching portion.
10. shielding case splicing structure as claimed in claim 9, it is characterised in that the non-ferromagnetic metal material plate be aluminium or
Aluminium alloy.
11. shielding case splicing structure as claimed in claim 9, it is characterised in that the stitching portion is located at the shielding case
In plane；
Position close to the stitching portion wherein on first concatenation unit and second concatenation unit wears multiple rivetings
Nail or bolt, the non-ferromagnetic metal material plate are fastened on the spelling of first concatenation unit and second concatenation unit
Meet place；Or
Rivet or bolt wherein are worn in the splicing gap of the stitching portion, the non-ferromagnetic metal material plate is fastened on
The stitching portion of first concatenation unit and second concatenation unit；Or
Wherein being located at the non-ferromagnetic metal material plate on the outside of the stitching portion has two ends and the spelling through the stitching portion
Gap and the U-bend folding part of the depletion layer are connect, described two ends are pressed over first concatenation unit and described respectively
On the screen layer in the outside of the second concatenation unit, the bottom of the U-bend folding part is by rivet or bolt and positioned at the splicing
The non-ferromagnetic metal material plate of the inner side at place is fixed together；
The rivet or bolt are non-magnetic ferrous material.
12. shielding case splicing structure as claimed in claim 9, it is characterised in that the stitching portion is located at the shielding case
On corner, at least one pair of described first concatenation unit and second concatenation unit are spelled at an angle in the stitching portion
Connect, the angle ranging from acute angle, right angle or obtuse angle；
Wherein described first concatenation unit is set in the first direction, and second concatenation unit is set in a second direction, and described
The end face of one concatenation unit and second concatenation unit is relative or staggers, in first concatenation unit and second splicing
There is splicing gap between unit；It is single that the screen layer is covered in first splicing with the bending arrangement consistent with the angle
On the outside of member, the outside of the collar extension in the splicing gap and second concatenation unit, the depletion layer with the angle
The consistent bending arrangement of degree is covered in inner side, the internal orifice in the splicing gap and described second of first concatenation unit
On the inner side of concatenation unit.
13. shielding case splicing structure as claimed in claim 12, it is characterised in that
First concatenation unit is vertically set, and second concatenation unit is horizontally disposed, and described first spells
The end face of first and described second concatenation unit of order is the vertical plane that mutually staggers, the end face of first concatenation unit with it is described
The upper surface of second concatenation unit is concordant, the end face of second concatenation unit towards the inner side of first concatenation unit and with
There is splicing gap between the inner side of first concatenation unit；The screen layer is covered in described first with the arrangement of L-shaped and spelled
The outside of order member, the end face of first concatenation unit, the collar extension in the splicing gap and second concatenation unit
On upper surface, the depletion layer is covered in the inner side of first concatenation unit, in the splicing gap with the arrangement of L-shaped
On the lower surface of mouth and second concatenation unit.
14. shielding case splicing structure as claimed in claim 12, it is characterised in that
First concatenation unit is vertically set, and second concatenation unit is horizontally disposed, and described first spells
The end face of first and described second concatenation unit of order is inclined-plane facing each other, so that first concatenation unit and described second
Concatenation unit is L-shaped by end face linking, has between first concatenation unit and the end face of second concatenation unit and spells
Connect gap；The screen layer be covered in the arrangement of L-shaped the outside of first concatenation unit, the collar extension in the splicing gap,
And on the upper surface of second concatenation unit, the depletion layer is covered in first concatenation unit with the arrangement of L-shaped
On the lower surface of inner side, the internal orifice in the splicing gap and second concatenation unit.
15. the shielding case splicing structure as described in any one of claim 1 to 8, it is characterised in that first concatenation unit and
Absorbing material is additionally provided with the inside of second concatenation unit, the absorbing material at least covers the depletion layer.
16. the shielding case splicing structure as described in any one of claim 1 to 8, it is characterised in that first concatenation unit
And/or second concatenation unit is battenboard, the sandwich layer of the battenboard is applied fireproofing, the outer layer of the battenboard
For non-ferromagnetic metal material.
17. shielding case splicing structure as claimed in claim 16, it is characterised in that the outer layer of the battenboard is that aluminium or aluminium are closed
Gold.
18. a kind of microwave dark room, it is characterised in that with the shielding case splicing structure as described in any one of claim 1 to 17.
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| 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 |
| 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 |
| CN113463797B (en) * | 2021-09-03 | 2021-11-16 | 山东大华医特环保工程有限公司 | Pin-connected panel cuts off structure |
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| CN205276984U (en) * | 2015-12-14 | 2016-06-01 | 深圳市通用测试系统有限公司 | Microwave dark room and structure is assembled to shielding shell thereof |
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| JPH09199885A (en) * | 1996-01-12 | 1997-07-31 | Tdk Corp | Microwave anechoic chamber |
| JP2000179068A (en) * | 1998-12-11 | 2000-06-27 | Kumagai Gumi Co Ltd | Anechoic chamber |
| JP4063983B2 (en) * | 1998-12-11 | 2008-03-19 | 株式会社熊谷組 | Anechoic chamber ceiling equipment |
| JP2007294903A (en) * | 2006-03-31 | 2007-11-08 | Nitta Ind Corp | Shield joint structure and spatial former, and testing method using spatial former |
| CN202755711U (en) * | 2012-09-04 | 2013-02-27 | 大连东信微波吸收材料有限公司 | Microwave anechoic chamber for intermodulation test |
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| CN205276984U (en) * | 2015-12-14 | 2016-06-01 | 深圳市通用测试系统有限公司 | Microwave dark room and structure is assembled to shielding shell thereof |
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