CN101929817B - Heat pipe and manufacturing method thereof - Google Patents
Heat pipe and manufacturing method thereof Download PDFInfo
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- CN101929817B CN101929817B CN2009101504669A CN200910150466A CN101929817B CN 101929817 B CN101929817 B CN 101929817B CN 2009101504669 A CN2009101504669 A CN 2009101504669A CN 200910150466 A CN200910150466 A CN 200910150466A CN 101929817 B CN101929817 B CN 101929817B
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- capillary structure
- heat pipe
- metal body
- metal
- plug
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- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 126
- 229910052751 metal Inorganic materials 0.000 claims abstract description 126
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000009833 condensation Methods 0.000 claims abstract description 15
- 230000005494 condensation Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 18
- 238000005245 sintering Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000007872 degassing Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 abstract 3
- 238000001704 evaporation Methods 0.000 abstract 3
- 238000009413 insulation Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 24
- 239000007788 liquid Substances 0.000 description 4
- 239000013528 metallic particle Substances 0.000 description 4
- 239000011800 void material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a heat pipe and a manufacturing method thereof. The heat pipe comprises a metal pipe body, a capillary structure and a working fluid, a sealing chamber is arranged in the metal pipe body, and an evaporation section, an insulation section and a condensation section are sequentially formed in the length direction of the metal pipe body; the capillary structure comprises a first capillary structure and two bar-shaped second capillary structures connected with the first capillary structure, the first capillary structure is attached to the inner wall of the evaporation section, the two second capillary structures are spacedly attached to the inner walls of the evaporation section, the insulation section and the condensation section, a gas channel is formed between the two second capillary structures, and the gas channel is provided with a smooth surface; and the working fluid is sealed in the sealing chamber. Thus, the space of the gas channel can be enlarged, and the flow rate of internal gas can be quickened, thereby improving the heat conduction efficiency of the heat pipe.
Description
Technical field
The invention relates to a kind of heat pipe, refer to heat pipe of a kind of pyrotoxin that is used for electronic installation and preparation method thereof especially.
Background technology
Along with the arithmetic speed of the central processing unit (CPU) of computer constantly promotes, the caloric value that it produced is also more and more higher, the heat abstractor of forming by aluminium extruded type radiator and fan in the past, can not satisfy the user demand of present central processing unit, so heat pipe (heat pipe) that has the dealer to develop successively to have higher heat conduction efficiency, and itself and radiator made up, to solve the heat dissipation problem of present stage effectively; Yet the structural design of inside heat pipe will be related to inside heat pipe gas and liquid flow rate and space and use problem; The inventor is based on foregoing problems and opposite heat tube and preparation method thereof carries out innovation.
Existing heat pipe, mainly comprise a metal body, a capillary structure and a working fluid, wherein the metal body has a sealed volume, capillary structure is that ring is established the internal face position that is attached to the metal body, working fluid then is received in the sealed volume of metal body, and be formed with a gas passage in the capillary structure inboard, so to constitute a heat pipe.
Yet, existing heat pipe, the heat that pyrotoxin is produced carries out gas, liquid variation is transmitted though have, but be located on the capillary structure of metal body internal face, metal body gas inside passage will significantly be dwindled, and the inner surface of these capillary structures is a matsurface, more inner gas flow speed is caused obstruction, and foregoing problems all is to cause the bad reason of the hot conductive performance of heat pipe; Really remain improver in addition.
Summary of the invention
The object of the present invention is to provide a kind of heat pipe and preparation method thereof, it is by the gas passage that is formed with smooth surface in metal body inside, the transmission space of gas passage that can increase effectively, and can quicken the flow rate of internal gas, and significantly promote the heat conduction efficiency of heat pipe.
In order to reach above-mentioned purpose, the present invention provides a kind of heat pipe, comprise a metal body, a capillary structure and a working fluid, this metal body inside has a sealed chamber, is formed with an evaporator section, an adiabatic section and a condensation segment in regular turn along this metal tube body length direction; This capillary structure comprises one first capillary structure and is connected in two bar shapeds, second capillary structure of this first capillary structure, this first capillary structure is attached to this evaporator section inwall position, this 2 second capillary structure is attached to this evaporator section, this adiabatic section and this condensation segment inwall position at interval, and between this 2 second capillary structure, being formed with a gas passage, this gas passage has a smooth surface; This working fluid is enclosed in the sealing chamber.
Wherein this heat pipe is a flat-shaped heat pipe.
Wherein this heat pipe is mainly enclosed jointly by two flat boards and two arcs and is formed.
Wherein this first capillary structure be formed at one of them should flat board on.
Wherein this each second capillary structure is formed at respectively on each this arc.
Wherein this evaporator section outer surface protrudes out and forms a protuberance, is formed with a groove in this protuberance, and this first capillary structure is placed in this groove.
Wherein this first capillary structure and each this second capillary structure are all metal powder sintered forming.
In order to reach above-mentioned purpose, the present invention also provides a kind of heat pipe preparation method, and its step comprises:
A) provide a metal body with a blind end;
B) plug is inserted in this metal body, a part of periphery of this plug and this metal inboard wall of tube body amplexiform, and another part periphery then is formed with a spacing with this metal inboard wall of tube body;
C) metal dust is inserted in this metal body from this spacing;
D) to this metal dust sintering of heating;
E) this plug is taken out, be formed with one first capillary structure in this metal body inside and be connected in two bar shapeds, second capillary structure of this first capillary structure, be formed with a gas passage between this 2 second capillary structure, this gas passage has a smooth surface;
F) working fluid is inserted this metal body inside, and this metal body is imposed degasification and seals.
Wherein be a circular metal body to be pressed into this metal body with a molding tool one flat-shaped in the step a), mainly dull and stereotyped and two arcs are enclosed and are formed this flat-shaped metal body jointly by two.
One of them should form a protuberance by the flat board outer surface, was formed with a groove in this protuberance inboard.
Wherein be that a rectangle plug is inserted in this metal body in the step b), this plug upper and lower surface is amplexiformed by folded the pulling of this two dull and stereotyped internal face, and the surface then is formed with this spacing with this two arcs internal face about this plug, and this spacing is to be interconnected with this groove.
It more comprises a step g), and it is with a shaped device this protuberance to be flattened processing.
Wherein be that a rectangle plug that will be provided with a concave surface inserts in this metal body in the step b), this plug upper and lower surface is amplexiformed by folded the pulling of this two dull and stereotyped internal face, the surface then is formed with this spacing with this two arcs internal face about this plug, be formed with a tank at this metal body corresponding to this concave region, this tank is communicated with this spacing.
Wherein earlier short grained metal dust is inserted section at the bottom of this metal body in the step c), more oarse-grained metal dust is filled in this metal body stage casing to epimere.
The present invention has following effect, because the different grain size of first capillary structure and second capillary structure and hole configuration make inner condensed fluid can flow back to evaporator section fast, to overcome heat pipe dry combustion method (dry out) phenomenon effectively.By the flat-shaped kenel of heat pipe, can be widely used in the electronic installation of slimming day by day in addition, use category and more increase it.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is that heat pipe of the present invention is made flow chart;
Fig. 2 is metal body of the present invention and plug three-dimensional exploded view;
Fig. 3 is that plug of the present invention inserts metal body combination schematic diagram;
Fig. 4 is the 4-4 cutaway view of Fig. 3;
Fig. 5 is the 5-5 cutaway view of Fig. 3;
Fig. 6 is a heat pipe stereo appearance figure of the present invention;
Fig. 7 is Fig. 6 side sectional view;
Fig. 8 is another embodiment cutaway view of heat pipe of the present invention;
Fig. 9 is the metal body and the plug three-dimensional exploded view of another preparation method of the present invention;
Figure 10 is that the plug of another preparation method of the present invention inserts metal body combination schematic diagram;
Figure 11 is the 11-11 cutaway view of Figure 10;
Figure 12 is the 12-12 cutaway view of Figure 10;
Figure 13 is the made heat pipe stereo appearance figure of another method for making of the present invention;
Figure 14 is that heat pipe of the present invention is applied in pyrotoxin user mode figure in conjunction with the radiating fin group.
Wherein, Reference numeral
Dull and stereotyped 101 arcs 102
Sealed chamber's 11 evaporator sections 12
First capillary structure, 21 second capillary structures 22,23
Working fluid 30
Spacing A
Tank B
Radiating fin group 7
Pyrotoxin 8
The specific embodiment
Relevant detailed description of the present invention and technology contents cooperate graphic being described as follows, however appended graphic only provide with reference to and explanation usefulness, be not to be used for to the present invention's limitr in addition.
The invention provides a kind of heat pipe, as shown in Figure 7, this heat pipe 1 mainly comprises a metal body 10, a capillary structure 20 and a working fluid 30.
Further specify, this capillary structure 20 is to form with metal dust institute sintering, and first capillary structure 21 is formed at the groove 104 interior (as shown in Figure 4) of aforementioned below flat board 101, and each second capillary structure 22,23 is formed at respectively on the aforementioned arc 102 (as shown in Figure 5); In addition, the metallic particles of first capillary structure 21 is less than the metallic particles of second capillary structure 22, and the internal void of first capillary structure 21 is less than the internal void of each second capillary structure 22,23; Again, at the metallic particles of each second capillary structure 22,23 of condensation segment 14 greater than metallic particles at each second capillary structure 22,23 of evaporator section 12; Moreover, in each second capillary structure, 22,23 internal void of condensation segment 14 greater than internal void at each second capillary structure 22,23 of evaporator section 12.
Working fluid 30 can be liquid such as pure water, and it is to enclose in the sealed chamber 11 of aforementioned metal body 10.
Please refer to Fig. 1 to shown in Figure 7, the present invention provides a kind of heat pipe preparation method, and the step of present embodiment heat pipe preparation method comprises:
S100: the metal body 10 (as shown in Figure 2) with a blind end 105 is provided; In this step, this metal body 10 can be materials such as copper or copper alloy, earlier a circular metal body 10 is pressed this metal body 10 with mould (scheming not shown) and form a flat-shaped kenel, this flat-shaped metal body 10 is to be enclosed jointly by two dull and stereotyped 102 of 101 and two arcs to form, and 101 outer surfaces of the flat board below its right side form a protuberance 103, are formed with a groove 104 in protuberance 103; Again protuberance 103 ends are imposed pressing and solder up and be formed with a blind end 105, then be reserved with an openend 106 away from a side of blind end 105 at metal body 10.
S110: a plug 5 is inserted in this metal body 10, and a part of periphery of this plug 5 and this metal body 10 inwalls amplexiform, and another part periphery then is formed with a spacing A (as shown in Figure 3) with these metal body 10 inwalls; In this step, be that a strip rectangle plug 5 is inserted in the metal body 10, these rectangle plug 5 upper and lower surfaces are amplexiformed mutually by flat board folded the pulling of 101 internal faces of metal body 10, rectangle plug about 5 surface then is formed with a spacing A with arc 102 internal faces of metal body 10, and this spacing A is interconnected with aforementioned grooves 104.
S120 a: metal dust 6 is inserted in this metal body 10 (as shown in Figure 4 and Figure 5) from this spacing A; In this step, being powder that metal material is made inserts in the metal body 10 from the spacing A of aforementioned openend 106, earlier short grained metal dust 6 is inserted in the metal body 10 during actual fabrication, and rocked metal body 10 and short grained metal dust 6 is filled in the spacing A of aforementioned grooves 104 and metal body 10 hypomeres (as shown in Figure 4); Again oarse-grained metal dust 6 filled in metal body 10 stage casings to the spacing A of epimere, use and form the capillary structure (as shown in Figure 5) of hole at stage casing to the epimere position of metal body 10 less than the hypomere position hole of metal body 10 thereafter.
S130: to this metal dust 6 sintering of heating; In this step, be the metal dust 6 of inserting metal body 10 is carried out sintering and to solidify with the sintering of heating (Sintering) processing procedure.
S140: this plug 5 is taken out, be formed with one first capillary structure 21 in these metal body 10 inside and be connected in two bar shapeds, second capillary structure 22 and 23 of this first capillary structure 21, be formed with a gas passage 24 between this 2 second capillary structure 22 and 23, this gas passage 24 has a smooth surface 241 (as shown in Figure 6); In this step, can left and rightly rock this plug 5, and make capillary structure 20 and plug 5 produce loosening phenomenon, again plug 5 is taken out from metal body 10 inside; So, can be formed with first capillary structure 21,2 second capillary structures 22 and 23 and gas passage 24, and be formed with two smooth surfaces 241 on the surface that metal body 10 and plug 5 amplexiform mutually in metal body 10 inside.
S150 a: working fluid 30 is inserted this metal body 10 inside, and this metal body 10 is imposed degasification and seals (as shown in Figure 7).In this step, metal body 10 is vertical or skewed ornaments, again working fluids such as pure water 30 are inserted metal body 10 inside.Secondly wait depassing unit with the discharge of metal body 10 gas inside to heat, the openend 106 to metal body 10 carries out pressing and solder up simultaneously, can be formed with aforementioned sealed chamber 11 in metal body 10 inside.
In addition, preparation method of the present invention more can comprise a step S160, it is to implement after step S140 or step S150, this step S160 flattens processing (as shown in Figure 8) with a shaped device to this protuberance 103 of this metal body 10, in this step, be the protuberance 103 that protrudes below dull and stereotyped 101 to be flattened processing, make this protuberance 103 and dull and stereotyped 101 outer surfaces at grade with shaped devices such as pressure, punch presses.
Please refer to Fig. 9 to shown in Figure 13, another preparation method of heat pipe of the present invention, wherein step S300: the metal body 10 (as shown in Figure 9) with a blind end 105 is provided; In this step, be that a circular metal body 10 is pressed into a flat-shaped kenel with mould (scheming not shown) with this metal body 10, and this flat-shaped metal body 10 is to be enclosed jointly by two dull and stereotyped 102 of 101 and two arcs to form.
S310: a plug 5 ' is inserted in this metal body 10, and a part of periphery of this plug 5 ' and this metal body 10 inwalls amplexiform, and another part periphery then is formed with a spacing A (as shown in figure 10) with these metal body 10 inwalls; In this step, be that a strip rectangle plug 5 ' is inserted in the metal body 10, this rectangle plug 5 ' front end is provided with a concave surface 51, this plug 5 ' is amplexiformed mutually by flat board folded the pulling of 101 internal faces of metal body 10, and be formed with a tank B corresponding to concave surface 51 zones at metal body 10, in addition then be formed with a spacing A, and this spacing A is interconnected with aforementioned tank B with arc 102 internal faces of metal body 10 in rectangle plug about 5 ' surfaces.
Secondly, S320 a: metal dust 6 is inserted in this metal body 10 (as Figure 11 and shown in Figure 12) from this spacing A; S330: to this metal dust 6 sintering of heating; S340: this plug 5 is taken out, be formed with one first capillary structure 21 in these metal body 10 inside and be connected in two bar shapeds, second capillary structure 22 and 23 of this first capillary structure 21, be formed with a gas passage 24 between this 2 second capillary structure 22 and 23, this gas passage 24 has a smooth surface 241 (as shown in figure 13); S350 a: working fluid 30 is inserted this metal body 10 inside, and this metal body 10 is imposed degasification and seals (scheming not shown).Wherein step S320 ~ S350 and abovementioned steps S120 ~ S150 content is roughly the same, therefore repeats no longer one by one to give unnecessary details.
Please refer to shown in Figure 14, for heat pipe of the present invention is applied in pyrotoxin user mode figure in conjunction with the radiating fin group, the condensation segment 14 of heat pipe 1 of the present invention can supply a radiating fin group 7 sockets, this radiating fin group 7 is combined by several dissipation fins, the evaporator section 12 of heat pipe 1 then amplexiforms on a pyrotoxin 8, the heat that these pyrotoxin 8 running backs are produced, to pass to evaporator section 12 and internal work fluid 30 is heated and vaporizes, these gases will be flowed through adiabatic section 13 fast and arrive condensation segment 14 from gas passage 24, simultaneously with the heat band from pyrotoxin 8, radiating and cooling effect by the radiating fin group 7 of condensation segment 14 outsides, to make the gas that arrives condensation segment 14 be condensated into liquid, and from each second capillary structure 22,23 flow back to first capillary structure, 21 places of evaporator section 12 again; So, constantly the circulation running is to constitute Heat Transfer of Heat Pipe on Heat Pipe mechanism.
In sum, heat pipe of the present invention and preparation method thereof really can reach the application target of expection, and solve existing disappearance, again because of having novelty and progressive, meet the application for a patent for invention important document fully, file an application according to Patent Law, would like to ask detailed survey and grant accurate this case patent, to ensure inventor's right.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (14)
1. a heat pipe is characterized in that, comprising:
One metal body, its inside has a sealed chamber, is formed with an evaporator section, an adiabatic section and a condensation segment in regular turn along this metal tube body length direction;
One capillary structure, comprise one first capillary structure and be connected in two bar shapeds, second capillary structure of this first capillary structure, this first capillary structure is attached to this evaporator section inwall position, this 2 second capillary structure is attached to this evaporator section, this adiabatic section and this condensation segment inwall position at interval, and between this 2 second capillary structure, being formed with a gas passage, this gas passage has a smooth surface;
One working fluid is enclosed in the sealing chamber.
2. heat pipe according to claim 1 is characterized in that, wherein this heat pipe is a flat-shaped heat pipe.
3. heat pipe according to claim 2 is characterized in that, wherein this heat pipe is mainly enclosed jointly by two flat boards and two arcs and forms.
4. heat pipe according to claim 3 is characterized in that, wherein this first capillary structure be formed at one of them should flat board on.
5. heat pipe according to claim 3 is characterized in that, wherein each this second capillary structure is formed at respectively on each this arc.
6. heat pipe according to claim 2 is characterized in that, wherein this evaporator section outer surface protrudes out and forms a protuberance, is formed with a groove in this protuberance, and this first capillary structure is placed in this groove.
7. heat pipe according to claim 6 is characterized in that, wherein this first capillary structure and each this second capillary structure are all metal powder sintered forming.
8. a heat pipe preparation method is characterized in that, its step comprises:
A) provide a metal body with a blind end;
B) plug is inserted in this metal body, a part of periphery of this plug and this metal inboard wall of tube body amplexiform, and another part periphery then is formed with a spacing with this metal inboard wall of tube body;
C) metal dust is inserted in this metal body from this spacing;
D) to this metal dust sintering of heating;
E) this plug is taken out, be formed with one first capillary structure in this metal body inside and be connected in two bar shapeds, second capillary structure of this first capillary structure, be formed with a gas passage between this 2 second capillary structure, this gas passage has a smooth surface;
F) working fluid is inserted this metal body inside, and this metal body is imposed degasification and seals.
9. heat pipe preparation method according to claim 8, it is characterized in that, wherein be a circular metal body to be pressed into this metal body with a molding tool one flat-shaped in the step a), mainly dull and stereotyped and two arcs are enclosed and are formed this flat-shaped metal body jointly by two.
10. heat pipe preparation method according to claim 9 is characterized in that, one of them should form a protuberance by the flat board outer surface, was formed with a groove in this protuberance inboard.
11. heat pipe preparation method according to claim 10, it is characterized in that, wherein be that a rectangle plug is inserted in this metal body in the step b), this plug upper and lower surface is amplexiformed by folded the pulling of this two dull and stereotyped internal face, the surface then is formed with this spacing with this two arcs internal face about this plug, and this spacing is to be interconnected with this groove.
12. heat pipe preparation method according to claim 11 is characterized in that it more comprises a step g), it is with a shaped device this protuberance to be flattened processing.
13. heat pipe preparation method according to claim 9, it is characterized in that, wherein be that a rectangle plug that will be provided with a concave surface inserts in this metal body in the step b), this plug upper and lower surface is amplexiformed by folded the pulling of this two dull and stereotyped internal face, the surface then is formed with this spacing with this two arcs internal face about this plug, be formed with a tank at this metal body corresponding to this concave region, this tank is communicated with this spacing.
14. heat pipe preparation method according to claim 8 is characterized in that, wherein earlier short grained metal dust is inserted section at the bottom of this metal body in the step c), more oarse-grained metal dust is filled in this metal body stage casing to epimere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101504669A CN101929817B (en) | 2009-06-23 | 2009-06-23 | Heat pipe and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101504669A CN101929817B (en) | 2009-06-23 | 2009-06-23 | Heat pipe and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101929817A CN101929817A (en) | 2010-12-29 |
| CN101929817B true CN101929817B (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101504669A Active CN101929817B (en) | 2009-06-23 | 2009-06-23 | Heat pipe and manufacturing method thereof |
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| CN (1) | CN101929817B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636058A (en) * | 2011-02-14 | 2012-08-15 | 昆山巨仲电子有限公司 | Cross-under type heat pipe structure and manufacturing method thereof |
| CN102297616A (en) * | 2011-08-15 | 2011-12-28 | 中山伟强科技有限公司 | Method for manufacturing thin heat pipe |
| CN114466557B (en) * | 2021-08-16 | 2023-04-11 | 荣耀终端有限公司 | Housing for electronic device, and method for manufacturing housing for electronic device |
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| CN101929817A (en) | 2010-12-29 |
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