CN205749598U

CN205749598U - Shielded box

Info

Publication number: CN205749598U
Application number: CN201620037119.0U
Authority: CN
Inventors: 刘金亮; 姜基锡; 曹波; 于开峰
Original assignee: Gyut Automation Technology (shenzhen) Co Ltd
Current assignee: Gyut Automation Technology (shenzhen) Co Ltd
Priority date: 2016-01-14
Filing date: 2016-01-14
Publication date: 2016-11-30
Anticipated expiration: 2026-01-14

Abstract

This utility model belongs to test apparatus field, a kind of shielded box is provided, including outer case, internal box and vacuum chamber, being also associated with external shielding layer and outer sealing coat between described outer case and described vacuum chamber, described external shielding layer is between described outer sealing coat and described outer case；Being also associated with internal shield and interior sealing coat between described vacuum chamber and described internal box, described interior sealing coat is between described internal shield and described internal box；Also being hinged with door assembly in described outer case, described door assembly includes the doorframe being connected in described outer case, and along deviating from soundproofing member, evacuated panel and the door-plate that described doorframe outer surface direction is sequentially connected with；It is relatively thin that the shielded box so designed can solve existing screening arrangement casing wall thickness, and overall tightness is poor, and then can not be effectively isolated external sound and electromagnetic signal interference, causes the problem that the accuracy of its test data also can not get ensureing.

Description

Shielded box

Technical field

This utility model belongs to test apparatus field, particularly relates to a kind of shielded box.

Background technology

At present, mobile phone, computer and wearable electronic product have been full of in daily life, Cheng Weiren The requirement lived, the raising required along with product test, Electronic Testing is to test environment (screening arrangement) Requirement more and more higher, and then the market demand of screening arrangement is gradually increased.But existing screening arrangement, How replacing with simple bakelite box, microminiature cast aluminium case or buckle type shielded box, these screening arrangements make work Skill is simple, and shielded box material is single, and casing wall thickness is relatively thin, and overall tightness is poor, and then can not be effectively isolated External sound and electromagnetic signal interference, cause the accuracy of its test data also to can not get ensureing.

Utility model content

The purpose of this utility model is to provide a kind of shielded box, it is intended to solve existing screening arrangement box body wall Thick relatively thin, overall tightness is poor, and then can not be effectively isolated external sound and electromagnetic signal interference, causes it The problem that the accuracy of test data also can not get ensureing.

This utility model is so to solve: a kind of shielded box, including outer case, internal box be connected to institute State the vacuum chamber between outer case and described internal box, also connect between described outer case and described vacuum chamber Being connected to external shielding layer and outer sealing coat, described external shielding layer is between described outer sealing coat and described outer case； Internal shield and interior sealing coat, described interior sealing coat it is also associated with between described vacuum chamber and described internal box Between described internal shield and described internal box；Door assembly, described door also it is hinged with in described outer case Assembly includes the doorframe being connected in described outer case, and is sequentially connected with along deviating from described doorframe outer surface direction Soundproofing member, evacuated panel and door-plate.

Further, sidewall relative with described door assembly in described outer case offers wire hole, described Connecting on the outer surface of sidewall and have rear shield, described rear shield connects the rubber stopper of band through hole, described rubber Plug is sealedly connected on described wire hole.

Further, described external shielding layer is the outer deadening felt screen layer being bonded on described outer case medial wall, And the volume of described outer deadening felt screen layer lateral wall is identical with the volume of described outer case medial wall.

Further, described outer sealing coat be folded between described external shielding layer and described vacuum chamber outside Plank sealing coat, the volume of described outer sealing coat medial wall is identical with the volume of the lateral wall of described vacuum chamber, And described vacuum chamber is provided with aspirating hole, described aspirating hole is equiped with check valve.

Further, described internal box is the interior acoustical cotton noise reduction layer being fitted on the inwall of described interior sealing coat, The volume of described interior acoustical cotton noise reduction layer lateral wall is identical with the volume of described internal shield medial wall.

Further, described internal shield is the internal sound insulation felt shielding being bonded on described vacuum chamber inner surface Layer.

Further, described interior sealing coat is the interior wood being folded between described internal shield and described internal box Plate sealing coat, described interior plank sealing coat front end connects has hollow sealing ring, described hollow sealing ring to be positioned at institute State on the medial wall of vacuum chamber and be sealed between described interior plank sealing coat and described soundproofing member.

Further, described doorframe is provided with storage tank, described soundproofing member, described evacuated panel and described door Plate is both connected in described storage tank, and described soundproofing member includes acoustical cotton plate, the isolation plank being sequentially connected with With deadening felt plate, described deadening felt plate is connected on described evacuated panel.

Further, described doorframe is additionally provided with closing structure, described closing structure include being fixed on described outside The first connector on the lateral wall of casing, corresponding described first connector and be fixed on described doorframe the Two connectors and hand wheel component, described first connector upper pin connects fork, and described hand wheel component connects Being connected to screw mandrel part, described screw mandrel part is threaded in described fork, and described hand wheel component turns through described fork It is automatically connected on described first connector.

Further, the outer surface of described outer case being also associated be available for the handle of carrying, described handle is Multiple and be arranged on two relative sides；Connect on the bottom surface of described outer case and have shock callus.

The technique effect that the shielded box that this utility model provides has relative to existing screening arrangement is: pass through The signal shielding of outer case, the sound reduction of external shielding layer, the interference of outer sealing coat intercepts, and vacuum tank Body block conduction further, the interference signal being externally entering is weakened step by step, and after being weakened simultaneously Interference signal also need at experience internal shield, interior sealing coat, and the deadening of last internal box, energy Enter into the interference signal within internal box the most very little；Meanwhile, the door being connected in outer case Assembly is again provided with preventing from disturbing signal to enter the soundproofing member within internal box and evacuated panel, total pair Interference signal in external environment condition intercepts layer by layer, and then can be effectively isolated the interference of outer signals, case in optimizing The test environment in internal portion, improves the accuracy of test.

Accompanying drawing explanation

Fig. 1 is the explosive view of the shielded box that this utility model embodiment provides.

Fig. 2 is the structure chart after door assembly removed by the shielded box that this utility model embodiment provides.

Fig. 3 is the side view of the shielded box that this utility model embodiment provides.

Fig. 4 is the partial enlarged drawing in Fig. 3 at A.

Fig. 5 is the sectional view in Fig. 3 along the cutting of B-B direction.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing And embodiment, this utility model is further elaborated.Should be appreciated that described herein specifically Embodiment, only in order to explain this utility model, is not used to limit this utility model.

It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, and it is permissible Directly on another element or may be simultaneously present centering elements.When an element is known as " being connected to " Another element, it can be directly to another element or may be simultaneously present centering elements.

Also, it should be noted the orientation term such as left and right, upper and lower in this utility model embodiment, only It is relative concept or with the normal operating condition of product as reference each other, and should not be regarded as that there is limit Property processed.

Refer to shown in accompanying drawing 1 to Fig. 5, in this utility model embodiment, it is provided that a kind of shielded box, bag The internal box 30 include outer case 10, being indirectly coupled in outer case 10, and it is connected to outer case 10 with interior Vacuum chamber 20 between casing 30, is formed and vacuum chamber 20 between the inside and outside wall of this vacuum chamber 20 The vacuum cavity 201 that shape is consistent, the air in this vacuum cavity 201 is extracted in advance, in this outer case External shielding layer 103 and outer sealing coat 104, simultaneously this external shielding layer it is also associated with between 10 and vacuum chamber 20 103 between outer sealing coat 104 and outer case 10；This external this vacuum chamber 20 and internal box 30 it Between be also associated with internal shield 301 and interior sealing coat 302, and this interior sealing coat 302 is positioned at internal shield 301 And between internal box 30；Additionally, be also hinged with door assembly 40 in this outer case 10, this door assembly 40 Including the doorframe 401 being connected in outer case 10, and it is sequentially connected with along deviating from this doorframe 401 outer surface direction Soundproofing member 402, evacuated panel 403 and door-plate 404.

The shielded box more than designed, by the signal shielding of outer case 10, the sound reduction of external shielding layer 103, The interference of outer sealing coat 104 intercepts, and vacuum chamber 20 block conduction further, be externally entering Interference signal is weakened step by step, and the interference signal after being simultaneously weakened also needs at experience internal shield 301, interior sealing coat 302, and the deadening of last internal box 30, can enter within internal box 30 Interference signal is the most very little；Meanwhile, the door assembly 40 being connected in outer case 10 is again provided with Preventing from disturbing signal to enter the soundproofing member 402 within internal box 30 and evacuated panel 403, total is external Interference signal in portion's environment intercepts layer by layer, and then can be effectively isolated the interference of outer signals, optimizes internal box Test environment within 30, improves the accuracy of test.

In the present embodiment, as depicted in figs. 1 and 2, the material of this outer case 10 is metallic plate, especially Steel plate, metal material is complete all-welded rectangular box structure, the connection door assembly of this outer case 10 after bending That side of 40 is not closed out, and the vacuum chamber 20 and the internal box 30 that are indirectly connected with therewith are all Side untight rectangular box structure；Vacuum chamber 20 forms for steel plate splicing preferably welded seal simultaneously, Having vacuum cavity 201 in and, this vacuum chamber 20 is arranged between outer case 10 and internal box 30 permissible Effectively block sound or the conduction of electromagnetic signal；The doorframe 401 of this door assembly 40 is arranged on outer case 10 In open side, and it is rotationally connected by hinge structure between the two, and by being arranged on doorframe 401 Closing structure 60 will seal between the two.

Specifically, as shown in Figure 2 and Figure 5, in embodiment of the present utility model, in this outer case 10 Wire hole 105 is offered, simultaneously at internal box 30, and outward on a upper sidewall relative with door assembly 40 On all parts between casing 10 with internal box 30 all the most corresponding offer as wire hole 105, this goes out String holes 105 power line of electric supply installation in time testing accesses, or output line etc.；Simultaneously at this Connecting on the outer surface of sidewall and have rear shield 50, connecting on this rear shield 50 has the rubber of band through hole 5011 Plug 501, through the power line of this wire hole 105 also cross this through hole 5011, then by this rubber stopper 501 Being sealedly connected on wire hole 105, so design can effectively reduce wire hole 105 to interference signal shielding The unfavorable factor brought.

In the present embodiment, as it is shown in figure 5, this rubber stopper 501 is the rubber stopper 501 that front end is taper, and And rubber stopper 501 is provided with opening, this opening closes when being squeezed, and so design can preferably be sealed Close this wire hole 105, to avoid external interference signals that test result is produced impact；This rear shield 50 passes through Hinge structure and clip hook device 502 can be connected on the outer surface of outer case 10 with opening, and so design is permissible It is easy to replacement or the adjustment of length of later stage power line etc..

Specifically, as depicted in figs. 1 and 2, in embodiment of the present utility model, this external shielding layer 103 For the bonding outer deadening felt screen layer being fitted on outer case 10 medial wall, this outer deadening felt screen layer passes through it Vibration in the outer case 10 passing to this metal material in external environment condition can be entered by the feature of material own Row absorbs and shielding, owing to outer deadening felt screen layer is fitted on outer case 10 medial wall, and then outer deadening felt The volume of screen layer lateral wall is identical with the volume of outer case 10 medial wall；This outer sealing coat 104 is for being folded in Outer plank sealing coat between external shielding layer 103 and vacuum chamber 20, this outer plank sealing coat is that polylith is highly dense The assembled rectangular box of plank superposition of degree, it is arranged on can between outer case 10 and vacuum chamber 20 With the sound conduction between outer case 10 and the vacuum chamber 20 of metal material of isolating metal material, and then Weaken the impact on test result of the signals such as sound；Simultaneously because this outer sealing coat 104 is connected to vacuum chamber On the lateral wall of 20, and then the lateral wall of the volume of this outer sealing coat 104 medial wall and vacuum chamber 20 Volume is identical；Additionally, this vacuum chamber 20 is provided with aspirating hole, this aspirating hole is equiped with check valve, this Air in vacuum cavity 201 can be detached by sample design when system debug or first use so that true Under the internal state being in vacuum of empty van body 20, so can effectively intercept the transmission of audio signal etc..

Specifically, as shown in Figure 1, Figure 2 with shown in Fig. 5, in embodiment of the present utility model, this internal box 30 is the interior acoustical cotton noise reduction layer being fitted on the inwall of interior sealing coat 302, outside this interior acoustical cotton noise reduction layer The volume of wall is identical with the volume of internal shield 301 medial wall；Meanwhile, this interior sealing coat 302 is for being folded in Interior plank sealing coat between internal shield 301 and internal box 30, this internal shield 301 is for being bonded in vacuum Internal sound insulation felt screen layer on casing 20 inner surface；This internal sound insulation felt screen layer is connected to this vacuum chamber 20 Time on inwall, the length of two side is less than the length of vacuum chamber 20 medial wall, and then at this interior plank Sealing coat front end connects hollow sealing ring 303, and this hollow sealing ring 303 is positioned at the inner side of vacuum chamber 20 On wall and be sealed between the soundproofing member 402 on interior plank sealing coat and doorframe 401 assembly, so design Internal box 30 is filled, it is to avoid three with the space between outer case 10, and hollow sealing ring 303 Crack gap remaining between person has influence on the shield effectiveness of entirety.

In the present embodiment, interior acoustical cotton noise reduction layer uses various material different, the acoustical cotton that tightness degree is different Combination matching forms rectangular box, this interior acoustical cotton noise reduction layer that wherein tightness degree difference is has multiple Cavity structure, and then sound-absorbing effect is more preferable, additionally, the structure of internal shield 301 and interior sealing coat 302 and Function, as the former external shielding layer 103 and outer sealing coat 104, does not repeats.

Specifically, as it is shown in figure 1, in embodiment of the present utility model, this doorframe 401 is provided with accommodating Groove 4011, this soundproofing member 402, evacuated panel 403 and door-plate 404 are both connected in storage tank 4011, are somebody's turn to do Soundproofing member 402 includes acoustical cotton plate 4021, isolation plank 4022 and the deadening felt plate 4023 being sequentially connected with, This deadening felt plate 4023 is connected on evacuated panel 403；So can be designed so that door assembly 40 isolation and Shield effectiveness is identical with other structures, and then jointly maintains the test effect in shielded box with other structures.

Specifically, shown as shown in Figure 1, Figure 3 and Figure 4, in embodiment of the present utility model, this doorframe 401 On be additionally provided with closing structure 60, this closing structure 60 includes be fixed on the lateral wall of outer case 10 first Connector 602, to should the second connector 601 and hands of being fixed on doorframe 401 of the first connector 602 Wheel assembly 603, this first connector 602 is connected by bearing pin and has fork 604, this hand wheel component 603 Upper connection has screw mandrel part 6031, and this screw mandrel part 6031 is threaded in fork 604, this hand wheel component 603 It is rotatably connected on the first connector 602 through fork 604.

In the present embodiment, as shown in Figure 4, this first connector 602 is provided with the first fluting 6021, should Fork 604 is rotatably connected in the first fluting 6021 by bearing pin, and this fork 604 is swingable One end is free end, and this free end is provided with screwed hole；On this second connector 601, offer the simultaneously Two flutings 6011, the front end of this hand wheel component 603 stretches out and is provided with screw mandrel part 6031, this screw mandrel part 6031 It is threaded in the screwed hole on fork 604；When needs door close assembly 40, by fork 604 along pin Axle rotates, and then drives the hand wheel component 603 being attached thereto to turn through the second fluting 6011 and by handwheel group Part 603 is connected on doorframe 401, and screw mandrel part 6031 is positioned at this second fluting 6011, then rotates The screw mandrel part 6031 screwed hole along fork 604 is rotated by the handwheel on hand wheel component 603, and then by doorframe 401 are pressed in outer case 10, thus complete to seal.In addition this closing structure 60 can also is that snap close is tied Structure or buckle structure, can select different structures to be connected and sealed according to practical situation.

Specifically, as depicted in figs. 1 and 2, in embodiment of the present utility model, in this outer case 10 Outer surface on be also associated with being available for the handle 101 of carrying, this handle 101 is for multiple and be arranged in two phases To side on；Connect on the bottom surface of this this outer case 10 external and have shock callus 102, this shock callus 102 Use elastomeric material, so can effectively reduce the bottom surface vibration impact on shielded box build-in test result.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, all should Within being included in protection domain of the present utility model.

Claims

1. a shielded box, it is characterised in that: include outer case, internal box and be connected to described outer case with Vacuum chamber between described internal box, is also associated with external shield between described outer case and described vacuum chamber Layer and outer sealing coat, described external shielding layer is between described outer sealing coat and described outer case；Described vacuum Being also associated with internal shield and interior sealing coat between casing and described internal box, described interior sealing coat is positioned at described Between internal shield and described internal box；Also being hinged with door assembly in described outer case, described door assembly includes It is connected to the doorframe in described outer case, and along deviating from the sound insulation group that described doorframe outer surface direction is sequentially connected with Part, evacuated panel and door-plate.

2. shielded box as claimed in claim 1, it is characterised in that: with described door assembly in described outer case Offering wire hole on a relative sidewall, the outer surface of described sidewall connects rear shield, described after Connecting on guard shield and have the rubber stopper of band through hole, described rubber stopper seal is connected on described wire hole.

3. shielded box as claimed in claim 1 or 2, it is characterised in that: described external shielding layer is for being bonded in Outer deadening felt screen layer on described outer case medial wall, and the volume of described outer deadening felt screen layer lateral wall Identical with the volume of described outer case medial wall.

4. shielded box as claimed in claim 3, it is characterised in that: described outer sealing coat is described for being folded in Outer plank sealing coat between external shielding layer and described vacuum chamber, the volume of described outer sealing coat medial wall with The volume of the lateral wall of described vacuum chamber is identical, and described vacuum chamber is provided with aspirating hole, described in bleed Check valve it is equiped with on hole.

5. shielded box as claimed in claim 1, it is characterised in that: described internal box is described interior for being fitted in Interior acoustical cotton noise reduction layer on the inwall of sealing coat, the volume of described interior acoustical cotton noise reduction layer lateral wall is with described The volume of internal shield medial wall is identical.

6. the shielded box as described in claim 1 or 5, it is characterised in that: described internal shield is for being bonded in Internal sound insulation felt screen layer on described vacuum chamber inner surface.

7. shielded box as claimed in claim 1, it is characterised in that: described interior sealing coat is described for being folded in Interior plank sealing coat between internal shield and described internal box, during the connection of described interior plank sealing coat front end has Empty sealing ring, described hollow sealing ring is positioned on the medial wall of described vacuum chamber and is sealed in described plank Between sealing coat and described soundproofing member.

8. shielded box as claimed in claim 1, it is characterised in that: described doorframe is provided with storage tank, institute State soundproofing member, described evacuated panel and described door-plate to be both connected in described storage tank, described soundproofing member bag Including acoustical cotton plate, isolation plank and the deadening felt plate being sequentially connected with, described deadening felt plate is connected to described vacuum On plate.

9. shielded box as claimed in claim 1, it is characterised in that: it is additionally provided with closing structure on described doorframe, Described closing structure includes the first connector, the correspondence described first being fixed on the lateral wall of described outer case Connector the second connector being fixed on described doorframe and hand wheel component, described first connector upper pin Connecting and have fork, described hand wheel component connects has screw mandrel part, described screw mandrel part to be threaded in described fork In, described hand wheel component is rotatably connected on described first connector through described fork.

10. shielded box as claimed in claim 1, it is characterised in that: on the outer surface of described outer case also Connecting and have the handle being available for carrying, described handle is multiple and is arranged on two relative sides；Outside described Connect on the bottom surface of casing and have shock callus.