CN105744822B - Shielding case, circuit board and mobile terminal - Google Patents
Shielding case, circuit board and mobile terminal Download PDFInfo
- Publication number
- CN105744822B CN105744822B CN201610287122.2A CN201610287122A CN105744822B CN 105744822 B CN105744822 B CN 105744822B CN 201610287122 A CN201610287122 A CN 201610287122A CN 105744822 B CN105744822 B CN 105744822B
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- Prior art keywords
- heat
- shielding
- heat absorption
- cover body
- shielding case
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
- H05K9/0022—Casings with localised screening of components mounted on printed circuit boards [PCB]
- H05K9/0024—Shield cases mounted on a PCB, e.g. cans or caps or conformal shields
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Signal Processing (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Details Of Aerials (AREA)
Abstract
The present invention discloses a kind of shielding case, shielding case is for accommodating component, and shield the electronic signal of component, shielding case includes shielding cover body and heat absorption heat accumulation part, heat absorption heat accumulation part is set on shielding cover body, and heat absorption heat accumulation part includes the heat absorption heat accumulating of the material properties with heat absorption and heat storage function.Shielding case provided by the invention passes through the setting heat absorption heat accumulation part on shielding cover body, heat absorption heat accumulation part includes that the heat absorption heat accumulating with heat absorption and heat storage function can absorb the heat on shielding cover body, and by heat storage at itself, after the temperature for shielding cover body lowers, the heat of storage is dispersed into air, to reduce the heat of shielding cover body, so that circuit board and mobile terminal with the shielding case have preferable heat dissipation performance, improve the reliability that equipment uses, reduce fever to shielding cover body, the influence of circuit board and mobile terminal.The present invention also provides a kind of circuit board and mobile terminals.
Description
Technical field
The present invention relates to a kind of electronic equipment field more particularly to a kind of shielding cases, circuit board and mobile terminal.
Background technique
With the development of mobile phone industry, mobile phone configuration is higher and higher, central processing unit (Central Processing
Unit/CPU) dominant frequency is higher and higher, and power consumption is increasing, and cell-phone heating amount is caused also accordingly to become larger, if these heats are not up to
To control or transfer, it will bring the influence of two aspects: 1. chip for cell phone temperature are excessively high, cause mobile phone operation slack-off, even
Caton influences the use of mobile phone；2. chip for cell phone temperature is transferred to phone housing, cause skin temperature higher, when use can go out
It now scalds one's hand, scald the problems such as ear.
It is at present in the industry usually that heat dissipation graphite flake is set to inner walls or Mobile phone screen for the heating problem for solving mobile phone
It covers and covers, graphite flake peripherally radiates by radiating, and plays the role of soaking and heat dissipation, but inventor states technology on the implementation
It finds not carrying out directly calorific value biggish position since the setting of heat dissipation graphite flake is larger by the limitation of position when scheme
Heat dissipation, and the graphite flake that radiates is to radiate immediately, and mobile phone bulk temperature may be higher at this time, and heat dissipation will lead to mobile phone immediately
The temperature of shell is higher, so that the heat of mobile phone can not be distributed preferably.
Summary of the invention
The purpose of the present invention is to provide one kind can reduce shielding case, circuit board and the mobile terminal that fever influences.
In order to solve the above-mentioned technical problems, the present invention provides a kind of shielding case, the shielding case is used to accommodate component,
And the electronic signal of the shielding component, the shielding case include shielding case and heat absorption heat accumulation part, the heat absorption heat accumulation part is set
It is placed on the shielding cover body, the heat absorption heat accumulation part includes the heat absorption heat accumulation of the material properties with heat absorption and heat storage function
Material, the heat absorption heat accumulating is used to absorb the heat on the shielding cover body, and the heat absorption heat accumulating will be inhaled
The heat of receipts is stored.
Wherein, the shielding cover body includes shield bracket and screening cover, and the screening cover is covered on the shield bracket
On；The screening cover includes shielding part and bending part, and the shielding part is for covering the shield bracket, the bending part bending
It is connected to the side that the shielding part forms the screening cover, the side is fastened on the side frame of the shield bracket.
Wherein, the screening cover opens up multiple heat release holes.
Wherein, the heat absorption heat accumulating includes silica and polyethylene glycol, the silica and polyethylene glycol
Mass ratio is 1:1~1:9.
Wherein, the heat absorption heat accumulating by it is several using the silica as cyst wall, using the polyethylene glycol as capsule-core
Micro-capsule constitute.
Wherein, the heat absorption heat accumulation part further includes titanate coupling agent and glue-line, the heat absorption heat accumulating and the titanium
Acid esters coupling agent is mixed and made into flaky material, and the glue-line stacking is covered on the flaky material, and the flaky material passes through
The glue-line is adhered on the shielding cover body.
Wherein, the heat absorption heat accumulation part further includes retarder thinner and bonding solution, the heat absorption heat accumulating, the dilution
Solvent and the bonding solution are mixed and are coated on the shielding cover body.
Wherein, the heat absorption heat accumulation part further includes substrate and glue-line, and the heat absorption heat accumulating is coated in the substrate,
The glue-line stacking is covered on the heat absorption heat accumulating, and the substrate for being coated with heat absorption heat accumulating passes through the glue
Layer is adhered on the shielding cover body.
Wherein, the shielding case further includes protective film, and the protective film is set on the heat absorption heat accumulation part, and the guarantor
Cuticula is located remotely from the side of the shielding cover body.
The embodiment of the invention also provides a kind of circuit board, including plate body, component and shielding case, the screens of the shielding case
It covers bracket to be welded on the plate body, the component is located at the inside of the shield bracket.
The embodiment of the invention also provides a kind of mobile terminals, including circuit board.
Shielding case provided by the invention includes having by the setting heat absorption heat accumulation part on shielding cover body, heat absorption heat accumulation part
The heat absorption heat accumulating of heat absorption and heat storage function can absorb the heat on shielding cover body, and heat storage is existed
The heat of storage is dispersed into air by itself after the temperature for shielding cover body lowers, to reduce shielding cover body
Heat improves what equipment used so that circuit board and mobile terminal with the shielding case have preferable heat dissipation performance
Reliability reduces influence of the fever to shielding cover body, circuit board and mobile terminal.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, attached drawing needed in embodiment will be made below
Simply introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, general for this field
For logical technical staff, without any creative labor, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram for shielding case that the embodiment of the present invention one provides；
Fig. 1 a is the schematic diagram of shielding cover body shown in FIG. 1；
Fig. 1 b is the sectional view of shielding case shown in FIG. 1；
Fig. 2 is a kind of schematic diagram of shielding case provided by Embodiment 2 of the present invention；
Fig. 2 a is the schematic diagram of the heat absorption heat accumulation part in shielding case shown in Fig. 2；
Fig. 3 is a kind of schematic diagram for shielding case that the embodiment of the present invention three provides；
Fig. 3 a is the sectional view of shielding case shown in Fig. 3；
Fig. 4 is a kind of schematic diagram for circuit board that the embodiment of the present invention four provides；
Fig. 5 is a kind of schematic diagram for mobile terminal that the embodiment of the present invention five provides.
Specific embodiment
Below in conjunction with the attached drawing in embodiment of the present invention, the technical solution in embodiment of the present invention is carried out clear
Chu is fully described by.
The present embodiments relate to mobile terminal can be any equipment for having communication and store function, such as: it is flat
Plate computer, mobile phone, electronic reader, remote controler, personal computer (Personal Computer, PC), laptop, vehicle
Carry the smart machine with network function such as equipment, Web TV, wearable device.
Please also refer to Fig. 1 to Fig. 1 b, Fig. 1 is a kind of structural representation for shielding case 100 that the embodiment of the present invention one provides
Figure, shielding case 100 shield the electronic signal of component for accommodating component, and shielding case 100 includes shielding 1 He of cover body
Absorb heat heat accumulation part 2, and heat absorption heat accumulation part 2 is set on shielding cover body 1, and heat absorption heat accumulation part 2 includes with heat absorption and heat storage function
Material properties heat absorption heat accumulating 21, heat absorption heat accumulating 21 be used for absorb it is described shielding cover body 1 on heat, and
Heat absorption heat accumulating 21 stores the heat of absorption.
In the present embodiment, the component that shielding cover body 1 is used to need to carry out to mobile terminal electric signal shielding carries out
Shielding, to reduce interfering with each other between component.The material for shielding cover body 1 can be metal material.It should be understood that first
Device includes various chips, the radio-frequency module etc. being integrated on circuit board.
It should be understood that please referring to Fig. 1 a, shielding cover body 1 includes shield bracket 11 and screening cover 12, and screening cover 12 covers
On shield bracket 11.Specifically, shield bracket 11 includes being oppositely arranged bottom end 111 and top 112, bottom end 111 is for welding
It being connected on circuit board, top 112 has an opening 112a, when being opened convenient for screening cover 12 with respect to shield bracket 11, Neng Gouzhi
It connected opening 112a and observes the component in shield bracket 11, and screening cover 12 is covered on shield bracket 11,
And the opening 112a of shield bracket 11 is sheltered from.Shield bracket 11 and screening cover are set as above by cover body 1 will be shielded
12 separated structure, so that when the component being placed in shielding cover body 1 needs repairing, it is only necessary to which screening cover 12 is opposite
It opens, can directly be observed by the opening 112a on 11 top 112 of shield bracket positioned at shield bracket 11 in shield bracket 11
In component, it is easy to repair.Certainly, in other embodiments, shielding cover body 1 can also be an integral structure.
It should be understood that screening cover 12 includes shielding part 121 and bending part 122, shielding part 121 is for covering shield bracket
11, bending part 122, which is bent, is connected to the side that shielding part 121 forms screening cover 12, and side is fastened on the side frame of shield bracket 11
On.Specifically, the bending part 122 of screening cover 12 by being tightly fastened on the side frame of shield bracket 11, enables screening cover 12
It is enough removably connected on shield bracket 11, convenient for shielding the opening of cover body 1, closing.Certainly, in other embodiments, shield
Cover lid 12 can with screw, buckle or be adhered on shield bracket 11.
It should be understood that the occlusion part 121 of screening cover 12 uniformly opens up multiple heat release hole 121a, for inside screening cover 12
Heat or screening cover 12 on heat more preferably radiated.Certainly, in other embodiments, occlusion part 121 can be with
Heat release hole 121a is not opened up.
In the present embodiment, heat absorption heat accumulating 21 can be a kind of phase-change material, can change with temperature change
Becoming physical property and can absorb a large amount of heat, with the increase of the heat of absorption, heat absorption heat accumulating 21 from a kind of phase gradually
It is converted into another phase, another phase of maintenance can be stablized after absorbing sufficient heat and is no longer absorbed heat, and when shielding cover body 1
When upper no heat source or lower heat, heat absorption heat accumulating 21 radiate and gradually as the reduction of heat is by another phase
It is gradually recovered as original phase.Wherein, heat absorption heat accumulating 21 can be as the variation of temperature be from solid phase to liquid phase or liquid phase
To solid phase transformation or solid phase to gas phase, perhaps liquid phase changes to solid phase or liquid phase is to gas phase or gas phase to liquid phase.
It should be understood that heat absorption heat accumulation part 2 is set on the inner surface of shielding cover body 1.That is heat absorption heat accumulation part 2 is set to
The inner surface of shield bracket 11 and screening cover 12, the shape and the shape phase of shield bracket 11 and screening cover 12 of the heat accumulation part 2 that absorbs heat
Matching, or be set on some region of shield bracket 11 and screening cover 12.When the heat of shielding cover body 1 reaches one
When determining temperature, the heat on 21 pairs of heat accumulating of heat absorption shielding cover bodies 1 in the heat accumulation part 2 that absorbs heat carries out heat absorption and heat accumulation, comes
Cool down to shielding cover body 1.Certainly, in other embodiments, according to actually required, heat absorption heat accumulation part 2 can also be simultaneously
Or it is separately set on the outer surface of shield bracket 11 and screening cover 12.
Shielding case 100 provided by the invention is wrapped by the setting heat absorption heat accumulation part 2 on shielding cover body 1, heat absorption heat accumulation part 2
The heat on shielding cover body 1 can be absorbed by including the heat absorption heat accumulating 21 with heat absorption and heat storage function, and will
The heat of storage is dispersed into air, after the temperature for shielding cover body 1 lowers to reduce by heat storage at itself
The heat of cover body 1 is shielded, so that the circuit board with the shielding case 100 and shielding case 100 have preferable thermal diffusivity
Can, the reliability that equipment uses is improved, influence of the fever to shielding cover body 1 is reduced.
In order to further improve, heat absorption heat accumulating 21 preferably comprises the silica that mass ratio is 1:1~1:9
And polyethylene glycol.Inventor obtains through a large number of experiments, and silica and polyethylene glycol are mixed with mass ratio for 1:1~1:9
Close can organic-composite phase-change material obtained there is suitable phase transition temperature, the heat of shielding cover body 1 can be absorbed in time
Amount, to further increase the reliability of shielding cover body 1.Specifically, the phase transition temperature that the heat absorption heat accumulating 21 is mixed to prepare
It is 40 degree, i.e., after the heat that shielding cover body 1 generates reaches 40 degree, heat absorption heat accumulating 21 carries out decalescence, will shield
The heat of cover body 1 is taken away, to cool down to shielding cover body 1.Certainly, in other embodiments, absorb heat heat accumulating 21
It can also be inorganic phase-changing material or composite phase-change material etc..
In order to further improve, the heat accumulating 21 that absorbs heat is as cyst wall, with polyethylene glycol using silica by several
The micro-capsule of capsule-core is constituted.The heat absorption heat accumulating 21 of the microcapsule structure preferably can carry out heat absorption heat accumulation to shielding cover body 1, into
And reach preferable heat dissipation performance.Specifically, polyethylene glycol is added in certain density silica solution, after all dissolutions,
CaCl is added dropwise2Accelerator solution, so that sol gel reaction occurs in silica solution for polyethylene glycol, is stood under strong stirring
Three-dimensional net structure gel is formed afterwards；By gel in 80 DEG C of baking ovens 24~48h of forced air drying, be cooled to room temperature, can obtain
To using organo-siloxane compound generate under alkaline condition it is a large amount of using silica dioxide gel as cyst wall, with emulsify after poly- second two
Alcohol is the micro-capsule of capsule-core.I.e. in each micro-capsule, silica wraps the polyethylene glycol as capsule-core as cyst wall, so that poly-
Ethylene glycol will not leak during from solid-liquid, can be good at being lived by Silica-coated.The formation microcapsules knot
The heat absorption heat accumulating 21 of structure starts to absorb the heat on shielding cover body 1 after the heat degree of reaching of shielding cover body 1, and
And capsule-core gradually increasing gradually from solid-liquid with heat itself, after capsule-core is converted to liquid phase, absorb heat heat accumulating
21 heats absorbed have been saturated, and stop absorbing heat, and the temperature outside shielding cover body 1 is gradually decrease to default temperature
After degree, capsule-core comes out the heat of absorption, is transmitted in air, and capsule-core can with gradually decreasing for its body heat and
Solid phase gradually is converted to from liquid phase, is converted by the circulation of above-mentioned solid phase to liquid phase, thus cool down to shielding cover body 1,
Improve the heat dissipation performance and reliability of shielding case 100.Certainly, in other embodiments, heat absorption heat accumulating 21 can also be it
Its structure enables heat absorption heat accumulating 21 to cool down by converting from the circulation for being solid to gas phase to shielding cover body 1.
As shown in Figure 1 b, in order to further improve, heat absorption heat accumulation part 2 further includes titanate coupling agent 21b and glue-line
22, heat absorption heat accumulating 21a and titanate coupling agent 21b are mixed and made into flaky material 21, and the stacking of glue-line 22 is covered on sheet material
On material 21, flaky material 21 is adhered on shielding cover body 1 by glue-line 22.
It is mixed and made into flaky material 21 by the heat accumulating 21a and titanate coupling agent 21b that will absorb heat, then passes through glue-line 22
Stacking, which is connected on flaky material 21, forms heat absorption heat accumulation part 2, not only enables heat absorption heat accumulation part 2 according to shielding cover body 1
Shape go to be cut, and then can with shielding cover body 1 have preferably cooperation, can to shielding cover body 1 it is each
A position carries out heat absorption heat accumulation, further to shielding cover body 1 cool down, improve shielding cover body 1 heat dissipation performance and can
By property, and the application of heat absorption heat accumulation part 2 of sheet is more convenient, is directly stained with, is cooled into coating without waiting for it.
In the present embodiment, heat absorption heat accumulating 21a is smashed to pieces and strong stirring obtains powder, since the diameter of powder is remote
Much larger than the diameter of each micro-capsule, therefore the microcapsule structure in heat absorption heat accumulating 21a will not be destroyed, that is, will not influence heat absorption storage
The heat absorption heat storage function of hot material 21a adds titanate coupling agent 21b hydrophobically modified in powdered heat absorption heat accumulating 21a
Inorganic quasi- organic composite shaping phase-change material is obtained, then by the inorganic quasi- organic composite shaping phase-change material through tabletting machine system
Laminar i.e. flaky material 21 is obtained, connection upper glue layer 22 is laminated again and forms heat absorption heat accumulation part 2 for flaky material 21.It should be understood that
Glue-line 22 can be gum, double-sided adhesive or release film etc..The heat accumulation part 2 that absorbs heat can be cut according to the shape of shielding cover body 121
At certain shapes, it is fitted on shielding cover body 1, realizes the function of heat absorption heat accumulation.
In order to further improve, shielding case 100 further includes protective film 3, and protective film 3 is set on heat absorption heat accumulation part 2,
And protective film 3 is located remotely from the side of shielding cover body 1.
By the way that protective film 3 is arranged on heat absorption heat accumulation part 2, further to be protected to heat absorption heat accumulation part 2, further mention
The reliability of high shielding case 100.
In the present embodiment, protective film 3 is polyethylene terephthalate (PET), and stacking is covered on flaky material
On 21, and it is opposite with glue-line 22, protective film 3 can further carry out shaping flaky material 21 and have the function of dust-proof.When
So, in other embodiments, the material of protective film 3 can also be other, such as silica gel.
Such as Fig. 2 to Fig. 2 a, a kind of shielding case 200 provided by the second embodiment of the present invention is implemented with the present invention first
The basic structure for the shielding case 100 that example provides is roughly the same, the difference is that, the heat absorption heat accumulation part 32 in the present embodiment wraps
Heat absorption heat accumulating, retarder thinner and bonding solution are included, heat absorption heat accumulating, retarder thinner and bonding solution are mixed and is coated on
It shields on cover body 31.
By the way that retarder thinner, bonding solution and heat absorption heat accumulating are mixed to form heat absorption heat accumulation part 32, so that heat absorption storage
Warmware 32 directly has adhesive force, can be coated on shielding cover body 31 without still further increasing glue-line, to provide one
Kind uses the heat accumulation part 32 that advantageously absorbs heat.
In the present embodiment, a referring to figure 2. smashs heat absorption heat accumulating and strong stirring obtains powder to pieces, due to powder
Diameter be far longer than the diameter of each micro-capsule, therefore will not destroy heat absorption heat accumulating 21 in microcapsule structure, i.e., will not shadow
The heat absorption heat storage function for ringing heat absorption heat accumulating is added to retarder thinner in powdered heat absorption heat accumulating and addition is special viscous
The mixing of knot solution (such as: methanol dimethylbenzene, acrylic resin etc.), so that heat absorption heat accumulation part 32 has adhesive force, by heat absorption storage
The form that warmware 32 directlys adopt coating is piled into certain thickness and is attached on shielding cover body 31, to realize the function of heat absorption heat accumulation
Energy.
In order to further improve, shielding case 200 further includes protective film 33, and protective film 33 is set to heat absorption heat accumulation part 32
On, and protective film 33 is located remotely from the side of shielding cover body 1.
By the way that protective film 33 is arranged on heat absorption heat accumulation part 32, further to be protected to heat absorption heat accumulation part 32, into one
Step improves the reliability of shielding case 200.
In the present embodiment, protective film 33 is polyethylene terephthalate (PET).Wherein, in heat absorption heat accumulation part 32
After being directly coated on shielding cover body 1, protective film 33 is set on heat absorption heat accumulation part 32.Protective film 33 can be further right
Heat absorption heat accumulation part 32 carries out shaping and has the function of dust-proof.Certainly, in other embodiments, the material of protective film 33 can be with
It is other, such as silica gel.
Such as Fig. 3 and Fig. 3 a, the third embodiment of the present invention provides a kind of shielding case 300, with first embodiment of the invention
The basic structure of the shielding case 100 of offer is roughly the same, the difference is that, the heat absorption heat accumulation part 42 in the present embodiment also wraps
Substrate 423 and glue-line 422 are included, heat absorption heat accumulating 21 is coated in substrate 423, and the stacking of glue-line 422 is connected to heat absorption heat accumulation material
On material 421, and glue-line 422 is adhered on shielding cover body 41.
It is formed by the way that directly heat absorption heat accumulating 21 is coated in substrate 423, then glue is set in heat absorption heat accumulating 21
Layer 422 carries out tabletting to be pasted on shielding cover body 41, without tablet press machine, makes relatively simple.
In the present embodiment, a referring to figure 3., substrate 423 is polyethylene terephthalate (PET), by the heat accumulation that absorbs heat
Material 21 is smashed to pieces and strong stirring obtains powder, since the diameter of powder is far longer than the diameter of micro-capsule, will not destroy suction
Microcapsule structure in hot heat accumulating 21 will not influence the heat absorption heat storage function of heat absorption heat accumulating 21, by powdered suction
Hot heat accumulating 421 is directly coated in substrate 423 and forms, and will there is the substrate 423 of heat absorption heat accumulating 421 to pass through glue-line 22
It is adhered on shielding cover body 41, realizes the heat absorption heat storage function of heat absorption heat accumulation part 2.It should be understood that glue-line 22 can be back
Glue, double-sided adhesive or other etc..
In order to further improve, shielding case 300 further includes protective film 43, and protective film 43 is set to heat absorption heat accumulation part 42
On, and it is located remotely from the side of shielding cover body 41.
By the way that protective film 43 is arranged on heat absorption heat accumulation part 42, further to be protected to heat absorption heat accumulation part 42, into one
Step improves the reliability of shielding case 300.
In the present embodiment, protective film 43 is polyethylene terephthalate (PET).Protective film 43 is set to substrate
On.Protective film 43 further can carry out shaping and have the function of dust-proof to heat absorption heat accumulation part 42.Certainly, in other embodiments
In, the material of protective film 43 can also be other, such as silica gel.
Referring to Fig. 4, the schematic diagram of the circuit board 400 provided for fourth embodiment of the invention, the circuit board 400 include
Any one in shielding case 100,200,300 in plate body 410, component 420 and three embodiments as above, shield bracket weldering
It is connected on plate body 410, component 420 is located at the inside of shield bracket.
Referring to Fig. 5, the schematic diagram of the mobile terminal 500 provided for fifth embodiment of the invention, the mobile terminal 500
Including the circuit board 400 in fourth embodiment.
When mobile terminal during fabrication, first shielding cover body setting heat absorption heat accumulation part, then by the bottom of shield bracket
End is welded on the plate body of circuit board, and finally circuit board is assemblied in mobile terminal.Wherein, the heat absorption storage of microcapsule structure is formed
Hot material shielding cover body heat reach 40 degree after, start absorb shielding cover body on heat, and capsule-core itself by
Gradually from solid-liquid, after capsule-core is converted to liquid phase, the heat that heat absorption heat accumulating absorbs has been saturated, and stops absorbing
Heat, and after the temperature of shielding case body exterior is gradually decrease to preset temperature, capsule-core comes out the heat of absorption, passes
It is delivered in air, and capsule-core can pass through the heat accumulating that absorbs heat with gradually decreasing for its body heat and gradually from liquid-solid
Circulating phase-change, thus to shielding cover body cool down, improve the heat dissipation performance and reliability of mobile terminal.
Shielding case provided by the invention includes having by the setting heat absorption heat accumulation part on shielding cover body, heat absorption heat accumulation part
The heat absorption heat accumulating of heat absorption and heat storage function can absorb the heat on shielding cover body, and heat storage is existed
The heat of storage is dispersed into air by itself after the temperature for shielding cover body lowers, to reduce shielding cover body
Heat improves what equipment used so that circuit board and mobile terminal with the shielding case have preferable heat dissipation performance
Reliability reduces influence of the fever to shielding cover body, circuit board and mobile terminal.
Mobile terminal provided by the invention also passes through the separated structure that will shield cover body setting shield bracket and screening cover,
So that when be placed in shielding cover body in component need repairing when, it is only necessary to by screening cover relative to shield bracket open, i.e.,
It can be easy to repair directly by the open view on shield bracket top to the component being located in shield bracket.
Mobile terminal provided by the invention also by the way that the bending part of screening cover is tightly fastened on the side frame of shield bracket,
Screening cover is removably connected on shield bracket, convenient for shielding the opening of cover body 1, closing.
Mobile terminal provided by the invention for 1:1~1:9 also by mixing silica and polyethylene glycol with mass ratio
Can organic phase change material obtained there is suitable phase transition temperature, the heat of shielding cover body, Lai Jinyi can be absorbed in time
Step improves the reliability of mobile terminal.
Mobile terminal provided by the invention also passes through the heat accumulating that will absorb heat and microcapsule structure is made, can be preferably to shielding case
Ontology carries out heat absorption heat accumulation, and then reaches preferable heat dissipation performance.
Mobile terminal provided by the invention also passes through the heat accumulating that will absorb heat and is mixed and made into sheet material with titanate coupling agent
Material, then be connected on flaky material by glue-line stacking and form heat absorption heat accumulation part, not only enable heat absorption heat accumulation part according to screen
The shape for covering cover body 1 goes to be cut, and the heat absorption heat accumulation part of sheet is directly stained with, is not had to using more convenient
It is waited to be cooled into coating.
Mobile terminal provided by the invention is also by being mixed to form suction for retarder thinner, bonding solution and heat absorption heat accumulating
Hot heat accumulation part can be coated on shielding cover body 1 without still further increasing glue-line so that heat absorption heat accumulation part directly has adhesive force
On, to provide a kind of using the heat accumulation part 2 that advantageously absorbs heat.
Mobile terminal provided by the invention, which also passes through that directly heat absorption heat accumulating is coated in substrate, to be formed, then is being absorbed heat
Glue-line is arranged to be pasted on shielding cover body in heat accumulating, carries out tabletting without tablet press machine, makes relatively simple.
Mobile terminal provided by the invention is also by being arranged protective film on heat absorption heat accumulation part, to carry out to heat absorption heat accumulation part
Further protection further increases the reliability of shielding cover body, mobile terminal.
It is the preferred embodiment of the present invention above, it is noted that for those skilled in the art,
Various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as this hair
Bright protection scope.
Claims (8)
1. a kind of shielding case, which is characterized in that the shielding case shields the e-mail of the component for accommodating component
Number, the shielding case includes shielding cover body and heat absorption heat accumulation part, and the heat absorption heat accumulation part is set to the shielding cover body
On inner surface and towards the component, the heat absorption heat accumulation part includes the heat absorption of the material properties with heat absorption and heat storage function
Heat accumulating, the heat absorption heat accumulating are used to absorb the heat on the shielding cover body and directly absorb the component
The heat distributed, and the heat absorption heat accumulating stores the heat of absorption, and in the shielding case body exterior
Temperature be gradually decrease to preset temperature after, the heat of absorption is dispersed into air, the heat absorption heat accumulation part further include dilution
Solvent and bonding solution, the heat absorption heat accumulating, the retarder thinner and the bonding solution mix and are coated on the screen
It covers on cover body.
2. shielding case according to claim 1, which is characterized in that the shielding cover body includes shield bracket and shielding
Lid, the screening cover are covered on the shield bracket；The screening cover includes shielding part and bending part, and the shielding part is used for
The shield bracket is covered, the bending part bending is connected to the side that the shielding part forms the screening cover, the side
It is fastened on the side frame of the shield bracket.
3. shielding case according to claim 2, which is characterized in that the screening cover opens up multiple heat release holes.
4. according to claim 1 to shielding case described in 3 any one, which is characterized in that the heat absorption heat accumulating includes two
The mass ratio of silica and polyethylene glycol, the silica and polyethylene glycol is 1:1~1:9.
5. shielding case according to claim 4, which is characterized in that the heat absorption heat accumulating is by several with the titanium dioxide
Silicon is cyst wall, is constituted by the micro-capsule of capsule-core of the polyethylene glycol.
6. shielding case according to claim 1, which is characterized in that the shielding case further includes protective film, the protective film
It is set on the heat absorption heat accumulation part, and the protective film is located remotely from the side of the shielding cover body.
7. a kind of circuit board, which is characterized in that including plate body, component and the shielding as described in claim 1~6 any one
Cover, the shield bracket of the shielding case are welded on the plate body, and the component is located at the inside of the shield bracket.
8. a kind of mobile terminal, which is characterized in that including circuit board as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287122.2A CN105744822B (en) | 2016-04-29 | 2016-04-29 | Shielding case, circuit board and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287122.2A CN105744822B (en) | 2016-04-29 | 2016-04-29 | Shielding case, circuit board and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105744822A CN105744822A (en) | 2016-07-06 |
| CN105744822B true CN105744822B (en) | 2019-06-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610287122.2A Active CN105744822B (en) | 2016-04-29 | 2016-04-29 | Shielding case, circuit board and mobile terminal |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942290A (en) * | 2010-08-09 | 2011-01-12 | 西南交通大学 | Method for preparing polyethylene glycol/silicon dioxide composite shape-stabilized phase change energy storage material and product thereof |
| CN202496170U (en) * | 2011-11-24 | 2012-10-17 | 比亚迪股份有限公司 | Shielding structure and mobile terminal |
| CN104039115A (en) * | 2014-05-14 | 2014-09-10 | 中山伟强科技有限公司 | Mobile phone heat dissipation module |
| CN104449590A (en) * | 2014-12-05 | 2015-03-25 | 中国工程物理研究院化工材料研究所 | Phase-change energy-storage material nanocapsule and preparation method thereof |
| CN105246314A (en) * | 2015-10-14 | 2016-01-13 | 小米科技有限责任公司 | Shielding case, PCB (Printed Circuit Board) board and terminal equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374333B (en) * | 2012-04-13 | 2016-04-27 | 南京德朔实业有限公司 | Composite phase change material |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942290A (en) * | 2010-08-09 | 2011-01-12 | 西南交通大学 | Method for preparing polyethylene glycol/silicon dioxide composite shape-stabilized phase change energy storage material and product thereof |
| CN202496170U (en) * | 2011-11-24 | 2012-10-17 | 比亚迪股份有限公司 | Shielding structure and mobile terminal |
| CN104039115A (en) * | 2014-05-14 | 2014-09-10 | 中山伟强科技有限公司 | Mobile phone heat dissipation module |
| CN104449590A (en) * | 2014-12-05 | 2015-03-25 | 中国工程物理研究院化工材料研究所 | Phase-change energy-storage material nanocapsule and preparation method thereof |
| CN105246314A (en) * | 2015-10-14 | 2016-01-13 | 小米科技有限责任公司 | Shielding case, PCB (Printed Circuit Board) board and terminal equipment |
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| CN105744822A (en) | 2016-07-06 |
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Address after: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant after: OPPO Guangdong Mobile Communications Co., Ltd. Address before: 523860 No. 18, Wu Sha Beach Road, Changan Town, Dongguan, Guangdong Applicant before: Guangdong OPPO Mobile Communications Co., Ltd. |
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