CN103888859A - Improved multimedia loudspeaker box - Google Patents
Improved multimedia loudspeaker box Download PDFInfo
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- CN103888859A CN103888859A CN201410114005.7A CN201410114005A CN103888859A CN 103888859 A CN103888859 A CN 103888859A CN 201410114005 A CN201410114005 A CN 201410114005A CN 103888859 A CN103888859 A CN 103888859A
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Abstract
The invention belongs to the technical field of loudspeaker boxes, and relates to an improved multimedia loudspeaker box. The improved multimedia loudspeaker box solves the technical problems that in the prior art, heat dissipation is poor, and assembling can not be easily achieved, and comprises a shell which is composed of a bottom shell and a face cover shell buckled on the bottom shell, an annular positioning protrusion is arranged at the end, close to the face cover shell, of the bottom shell, an annular positioning groove is formed in the face cover shell, a plurality of first directed protruding bodies are arranged on the outer wall of the bottom shell, at least one of the first directed protruding bodies is different from the rest of the first directed protruding bodies in transverse cross section area, a plurality of second directed protruding bodies are arranged on the outer lateral wall of the face cover shell, at least one of the second directed protruding bodies is different from the rest of the second directed protruding bodies in transverse cross section area, a cylindrical part communicated with the interior of the bottom shell is arranged in the center of the bottom of the bottom shell, a radiating plate is arranged at the end, far away from the bottom shell, of the cylindrical part, the face cover shell is made of magnesium alloy materials, and the surface of the face cover shell is further coated with a piano stoving varnish layer. The improved multimedia loudspeaker box has the advantages of being good in heat dissipation and easy to assemble.
Description
Technical field
The invention belongs to technology for loudspeaker box field, relate to a kind of modified form multimedia loudspeaker box.
Background technology
Audio amplifier refers to audio signal to be transformed to a kind of equipment of sound, and popular saying just refers in audio amplifier main frame casing or subwoofer casing and carry power amplifier.At present, allegro life is recognized people, and suitable amusement is very effective to alleviating the pressure of living, and therefore the abstract the recreational consumption of family is at rapid growth, and digitized stereo set is also more and more universal.Existing audio amplifier mainly comprises sound box and is installed on the loud speaker in casing, after being amplified to processing, audio signal goes out sound by the playback of audio amplifier own, with this audio amplifier in the time putting the music on, can obtain perfection and generally will carry out heighten atmosphere by light, in some singing-halls, bar, music and light are often used in conjunction with, effect is better, due to this sound box slightly greatly, slightly heavy, therefore the phenomenons such as assembling easily repeat to do over again while assembling, secondly, this audio amplifier is poor to the heat radiation of electronic device, has virtually shortened useful life;
Therefore people have invented a kind of audio amplifier; the patent of invention that for example application number is 201020213852.6 discloses a kind of audio amplifier; this audio amplifier comprises voice box casing, be placed in loud speaker, the guard in voice box casing and be fixed on the audio amplifier lid at the upper and lower two ends of voice box casing; described guard be each side provided with a flanging bending inwards, described flanging is along extending in guard short transverse; Described voice box casing be each side provided with a slot matching with described flanging.Although this scheme has been improved prior art to a certain extent, but also at least there is following defect in this scheme: although be provided with the radiator structures such as guard on voice box casing, but the dissipation from electronic devices process in audio amplifier is slow and radiating effect is poor, in addition, still exist and be difficult for assembling and the technical problems such as assembling of frequently doing over again.
And voice box casing of the prior art is made up of plastics, resin or timber, resonance and reverberation meeting impact the sounding effect of loud speaker and whole audio amplifier, make audio amplifier sounding clear not, affect tonequality.In addition, the housing durability that plastics or resin are made is bad, easily distortion, and timber easily corrodes, and all can reduce the service life of audio amplifier; And the casing of loudspeaker box aesthetics that these materials are made is inadequate, is not enough to obtain consumer's favor.
Summary of the invention
The object of the invention is to have the problems referred to above for prior art, proposed a kind of design more rationally and be easy to the modified form multimedia loudspeaker box of assembling.
Object of the present invention can realize by following technical proposal: modified form multimedia loudspeaker box of the present invention comprises shell, shell is made up of drain pan and the face shield shell being fastened on drain pan, on face shield shell, be provided with some ventilation holes, on face shield shell, also have to the depressed part of drain pan one side depression, described depressed part bottom is provided with through hole, there is the inner fovea part caving inward in the both sides of drain pan, be provided with the handle that is arranged on one of them inner fovea part outside at drain pan outer wall, there is circular orientation projection at drain pan near one end of face shield shell, on face shield shell, be provided with the annular positioning groove inserting for the circular orientation projection for described, some first directed convex bodys of outer wall and the lateral cross section area of at least one the first directed convex body at drain pan are different from remaining first directed convex body lateral cross section area, the lateral cross section area that is provided with some the second directed convex bodys and at least one the second directed convex body at the lateral wall of face shield shell is different from remaining second directed convex body lateral cross section area, the first described directed convex body and the corresponding and docking mutually one by one of the second directed convex body, described drain pan bottom centre have extend internally and with the cylindrical portion of drain pan internal communication, described cylindrical portion and the drain pan formula that is connected as a single entity, there is heating panel in cylindrical portion away from one end of drain pan, be provided with between some radiating ribs and adjacent two radiating ribs and form heat dissipation channel at heating panel lateral surface, the material of described face shield shell is magnesium alloy materials, the surface of described face shield shell is also coated with piano baking vanish layer.
In this application, owing to being provided with the lateral cross section area of at least one the first directed convex body different from remaining first directed convex body lateral cross section area from lateral cross section area at least one second directed convex body with remaining second directed convex body lateral cross section area different structure, in the time of assembling, can avoid the phenomenon of doing over again and resetting of repetition, improve production efficiency and reduced production cost; In addition, heating panel can be used for concentrating and absorbs the heat of dissipation from electronic devices, by its effect in conjunction with radiating ribs by dissipation of heat, thereby ensure useful life, secondly, ventilation hole and through hole can further play a part heat radiation.
In the present invention, the material of face shield shell is magnesium alloy materials, magnesium alloy is the lightest structural metallic materials in engineering application, there is the advantages such as density is low, specific strength is high, specific stiffness is high, damping property is high, easy processing, easy recovery, and under the metals resources overall background in short supply such as global iron, aluminium, zinc, resource and the price of magnesium have clear superiority.In addition, magnesium alloy itself is nonmagnetic, shielding good, can better ensure that tonequality, perfection represent beautiful music with magnesium alloy as voice box casing material.On this basis, the present invention is also provided with piano baking vanish layer on face shield shell surface, make sound box cover shell surface color bright-coloured, there is very strong visual impact, and good, the easy scouring of surface smoothness, protection against the tide, scratch-resistant, do not occurring under mechanicalness damaged condition, face shield shell surface is still bright as new after for many years.But the poor-performings such as ordinary magnesium alloy low strength, heat-proof corrosion-resistant.In order to improve the performance such as intensity, heat-proof corrosion-resistant of the face shield shell that magnesium alloy makes, the present invention has adjusted the content of Al, Zn, Mn element in magnesium alloy, and the content of controlling Si, Ni, Fe is no more than above-mentioned scope, meanwhile, has added rare earth element in magnesium alloy.
As preferably, described magnesium alloy composition is: Al:8.2-8.8%, and Zn:0.45-0.75%, Mn:0.15-0.3%, RE:0.1-4.5%, Si≤0.02%, Ni≤0.001%, Fe≤0.003%, surplus is Mg and inevitable impurity.
Because the atomic size radius of most of rare earth element and magnesium differs in ± 15% scope, in magnesium, there is larger solid solubility, there is good solution strengthening, precipitation strength effect, can effectively improve alloy structure and microstructure, raising Alloy At Room Temperature and mechanical behavior under high temperature, enhancing alloy corrosion resistance and thermal endurance etc.Because rare earth element atom diffusivity is poor, there is remarkable effect to improving magnesium alloy recrystallization temperature and slowing down recrystallization process again.Rare earth element also has good ageing strengthening effect, can separate out highly stable disperse phase particle, thereby can increase substantially elevated temperature strength and the creep resistance of magnesium alloy.Therefore in magnesium alloy, add a certain amount of rare earth element can effectively improve the intensity of magnesium alloy, the performance such as heat-resisting, anti-corrosion.
Certainly mass percent and role that, different rare earth elements joins in magnesium alloy are different.Show one or more in the further preferred rare earth element y of the present invention, Ce, La through studying for a long period of time.Wherein, the addition of rare earth element y is controlled in the scope of 0.8-1.1% in the present invention, can significantly fall low-alloyed corrosion rate, carries heavy alloyed equilibrium potential and corrosion potential, reduces corrosion current.And rare earth element ce joins after Magnesium Alloy, refinement alloy structure plays refined crystalline strengthening effect, and the mutually tiny and disperse of netted β is distributed on crystal boundary; Form at crystal boundary the Al that disperse distributes simultaneously
4ce compound plays second-phase invigoration effect, and when in the present invention, Ce addition is in the scope of 0.5-0.8%, it is best that the comprehensive mechanical properties such as tensile strength, yield strength, percentage elongation and the hardness of alloy reach.But, than rare earth element ce, add the mechanical property of magnesium alloy after the rare-earth elements La of 1-1.3% to be obviously better than adding the Properties of Magnesium Alloy after rare earth element ce.
In above-mentioned modified form multimedia loudspeaker box, described cylindrical portion has the circular orientation portion extending internally away from one end of drain pan, described heating panel is arranged in circular orientation portion and it is circumferentially resisted against cylindrical portion inwall, described cylindrical portion and the circular orientation portion formula that is connected as a single entity.
In above-mentioned modified form multimedia loudspeaker box, described drain pan bottom outside wall is provided with some flexible angles, and described flexible angle is fixed on drain pan by connected structure.Connected structure comprises jack and is located at the expansion latch of flexible angle one end.
In above-mentioned modified form multimedia loudspeaker box; described face shield shell is provided with ring-shaped step and is located at the sheet catch net on ring-shaped step; the internal diameter that is provided with tubular column that some even circumferentials distribute and at least one tubular column on ring-shaped step is different from remaining tubular column internal diameter; the external diameter that is equipped with some keepers and at least one keeper on sheet catch net is different from remaining keeper external diameter, and described tubular column and keeper one by one corresponding and keeper insert in tubular column.
In above-mentioned modified form multimedia loudspeaker box, in described drain pan, be provided with some first and strengthen column, in face shield shell, be provided with and described first strengthen column and second strengthen column one to one, described first strengthens being connected by demountable structure between column and the second reinforcement column.The first reinforcement column and second is strengthened column all reinforcement and two effects that are connected, and demountable structure comprises that screw thread connects, grafting etc. structure.
Another object of the present invention is to provide the preparation method of above-mentioned face shield shell, and described preparation method comprises the following steps:
S1: first preheating furnace is heated to 130-160 DEG C, then magnesium alloy is put into preheating furnace is incubated 0.5-3h, then magnesium alloy is proceeded in melting furnace, be heated to 650-700 DEG C and make magnesium alloy fusing, be then pressed into rare earth elements RE, stir after fusing and leave standstill 5-10min;
S2: adjust the content of each element in solution, be then transported to die casting machine injection chamber by conveying device and carry out die casting, make face shield shell blank;
S3: polished in the above-mentioned face shield shell blank surface making, then carry out the processing of piano baking finish process, make face shield shell.
As preferably, described in step S1, in fusion process, also add coverture, described coverture is the one in RJ-2, RJ-5.For preventing liquid magnesium alloy oxidizing fire, utilize the coverture of low melting point to be fused into liquid state at lower temperature, spread out at magnesium alloy liquid level, thereby stop magnesium liquid to contact and play a protective role with air.
As preferably, the pressure of die casting described in step S2 is 70-80MPa, and mold temperature is 180-220 DEG C.
As preferably, the baking finish process of piano described in step S3 comprises 3-5 priming paint of spraying, 2-5 finish paint, and per last time paints, and all will under 50-65 DEG C of condition, toast 3-8h, then uses the sand papering of 300-350 order; The thickness of described piano baking finish process piano baking vanish after treatment layer is 0.3-1.5mm.Owing to being subject to the impact of adhesive force between finish paint and base material in piano baking finish process, must 3-5 priming paint of spraying before spray paint, and then spray 2-5 finish paint.And every last paint all will toast 3-8h under 50-65 DEG C of condition, makes film curing, instead of makes paint film natural air drying.Use again afterwards the sand papering of 300-350 order, make piano baking vanish layer surface smoothness better.
As preferably, described priming paint is acrylic primer, and described finish paint is unsaturated polyester (UP) piano lacquer.Acrylic primer has good salt fog resistance, humidity resistance and good mechanical property, and there is to good adhesive force metal surface, is a kind of priming paint of better performances.The unsaturated polyester (UP) piano lacquer coating layer thickness of once constructing can reach 1 millimeter, and coating is plentiful, as clear as crystal, hardness, glossiness, water-fast, heat-resisting, resistance to acids and bases and in short-term resistance to slight flame be that other paint is kind incomparable.
Compared with prior art, the present invention has following beneficial effect:
1, owing to being provided with lateral cross section area lateral cross section areas different from remaining first directed convex body lateral cross section area and at least one the second directed convex body the structure different with remaining the second directed convex body lateral cross section area of at least one the first directed convex body, in the time of assembling, can avoid the phenomenon of doing over again and resetting of repetition, improve production efficiency and reduced production cost; In addition, heating panel can be used for concentrating and absorbs the heat of dissipation from electronic devices, by its effect in conjunction with radiating ribs by dissipation of heat, thereby ensure useful life, secondly, ventilation hole and through hole can further play a part heat radiation.
2, face shield shell adopts magnesium alloy to make, and magnesium alloy resource is abundant, density is low, specific strength is high, specific stiffness is high, damping property is high, easily processing, and nonmagnetic, shielding good, can better ensure that tonequality, perfection represent beautiful music after making.
3, face shield shell is through the processing of piano baking finish process, and surface color is bright-coloured, has very strong visual impact; And easily scourings, protection against the tide, scratch-resistant, in the situation that not there is not mechanical damage, piano baking vanish layer after for many years still light as newly.
Brief description of the drawings
Fig. 1 is structural representation provided by the invention.
Fig. 2 is blast structural representation provided by the invention.
Fig. 3 is bottom case structure schematic diagram provided by the invention.
Fig. 4 is the structural representation of circular orientation provided by the invention projection while coordinating with annular positioning groove.
In figure, drain pan 1, inner fovea part 11, circular orientation projection 12, the first directed convex body 13, flexible angle 14, the first reinforcement column 15, face shield shell 2, ventilation hole 21, depressed part 22, through hole 22a, annular positioning groove 23, the second directed convex body 24, the second reinforcement column 25, ring-shaped step 2a, tubular column 2b, handle 3, cylindrical portion 4, circular orientation portion 41, heating panel 5, radiating ribs 51, sheet catch net 6, keeper 61.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As Figure 1-4, modified form multimedia loudspeaker box of the present invention comprises shell, shell is made up of drain pan 1 and the face shield shell 2 being fastened on drain pan 1, on drain pan 1 bottom outside wall, be provided with some flexible angles 14, described flexible angle 14 is fixed on drain pan 1 by connected structure, on face shield shell 2, be provided with some ventilation holes 21, on face shield shell 2, also have to the depressed part 22 of drain pan 1 one side depressions, described depressed part 22 bottoms are provided with through hole 22a, there is the inner fovea part 11 caving inward in the both sides of drain pan 1, be provided with the handle 3 that is arranged on one of them inner fovea part 11 outside at drain pan 1 outer wall, there is circular orientation projection 12 at drain pan 1 near one end of face shield shell 2, on face shield shell 2, be provided with the annular positioning groove 23 inserting for the circular orientation projection 12 for described, some first directed convex bodys 13 of outer wall and the lateral cross section area of at least one the first directed convex body 13 at drain pan 1 are different from remaining first directed convex body 13 lateral cross section area, the lateral cross section area that is provided with some the second directed convex bodys 24 and at least one the second directed convex body 24 at the lateral wall of face shield shell 2 is different from remaining second directed convex body 24 lateral cross section area, the first described directed convex body 13 and the corresponding and docking mutually one by one of the second directed convex body 24, described drain pan 1 bottom centre have extend internally and with the cylindrical portion 4 of drain pan 1 internal communication, described cylindrical portion 4 and drain pan 1 formula that is connected as a single entity, there is heating panel 5 in cylindrical portion 4 away from one end of drain pan 1, be provided with between some radiating ribs 51 and adjacent two radiating ribs 51 and form heat dissipation channel at heating panel 5 lateral surfaces.The material of face shield shell 2 is magnesium alloy materials, and the surface of face shield shell 2 is also coated with piano baking vanish layer.
Further, cylindrical portion 4 at the present embodiment has the circular orientation portion 41 extending internally away from one end of drain pan 1, described heating panel 5 is arranged in circular orientation portion 41 and it is circumferentially resisted against cylindrical portion 4 inwalls, described cylindrical portion 4 and circular orientation portion 41 formula that is connected as a single entity.
In addition; on face shield shell 2, be provided with ring-shaped step 2a and be located at the sheet catch net 6 on ring-shaped step 2a; the internal diameter that is provided with tubular column 2b that some even circumferentials distribute and at least one tubular column 2b on ring-shaped step 2a is different from remaining tubular column 2b internal diameter; the external diameter that is equipped with some keepers 61 and at least one keeper 61 on sheet catch net 6 is different from remaining keeper 61 external diameter, and described tubular column 2b and keeper 61 one by one corresponding and keeper 61 insert in tubular column 2b.Secondly, be provided with some first and strengthen columns 15 in drain pan 1, be provided with and described first strengthen column 15 and second strengthen column 25 one to one in face shield shell 2, described first strengthens being connected by demountable structure between column 15 and the second reinforcement column 25.
The lateral cross section area of at least one of the present embodiment the first directed convex body different from remaining first directed convex body lateral cross section area from lateral cross section area at least one second directed convex body with remaining second directed convex body lateral cross section area different structure, in the time of assembling, can avoid the phenomenon of doing over again and resetting of repetition, improve production efficiency and reduced production cost; In addition, heating panel can be used for concentrating and absorbs the heat of dissipation from electronic devices, by its effect in conjunction with radiating ribs by dissipation of heat, thereby ensure useful life, secondly, ventilation hole and through hole can further play a part heat radiation.
Table 1 embodiment 1-4 mask shell material magnesium alloy composition and percentage by weight thereof
Embodiment 1:
First preheating furnace is heated to 130 DEG C, then is incubated 2.5h by following the magnesium alloy of choosing according to 1 composition of embodiment in table 1 and percentage by weight thereof to put into preheating furnace, then proceed in melting furnace, be heated to 650 DEG C and make magnesium alloy fusing.For preventing liquid magnesium alloy oxidizing fire, in fusion process by adding RJ-2 coverture to protect.Then be pressed into rare earth elements RE, after fusing, stir and leave standstill 6min, and adjust the content of each element in solution, then be transported to die casting machine injection chamber by conveying device and carry out die casting, die-casting technological parameter is set to: die casting pressure 72MPa, 185 DEG C of mold temperatures, make face shield shell blank.Polished in the face shield shell blank surface making again afterwards, then carry out the processing of piano baking finish process, comprise 3 acrylic primers of spraying, 3 unsaturated polyester (UP) piano lacquers, every last paint all will toast 7h under 50 DEG C of conditions, then uses 300 order sand paperings, make the thickness of piano baking vanish layer reach 6mm, make face shield shell.
Embodiment 2:
First preheating furnace is heated to 140 DEG C, then proceeds to melting furnace by following the magnesium alloy of choosing according to 2 compositions of embodiment in table 1 and percentage by weight thereof to put into after preheating furnace is incubated 2h, be heated to 660 DEG C and make magnesium alloy fusing.For preventing liquid magnesium alloy oxidizing fire, in fusion process by adding RJ-2 coverture to protect.Then be pressed into rare earth elements RE, after fusing, stir and leave standstill 8min, and adjust the content of each element in solution, then be transported to die casting machine injection chamber by conveying device and carry out die casting, die-casting technological parameter is set to: die casting pressure 75MPa, 190 DEG C of mold temperatures, make face shield shell blank.Polished in the voice box casing blank surface making again afterwards, then carry out the processing of piano baking finish process, comprise 4 acrylic primers of spraying, 2 unsaturated polyester (UP) piano lacquers, every last paint all will toast 6h under 55 DEG C of conditions, then uses 330 order sand paperings, make the thickness of piano baking vanish layer reach 6mm, make face shield shell.
Embodiment 3:
First preheating furnace is heated to 150 DEG C, then proceeds to melting furnace by following the magnesium alloy of choosing according to 3 compositions of embodiment in table 1 and percentage by weight thereof to put into after preheating furnace is incubated 1.5h, be heated to 670 DEG C and make magnesium alloy fusing.For preventing liquid magnesium alloy oxidizing fire, in fusion process by adding RJ-5 coverture to protect.Then be pressed into rare earth elements RE, after fusing, stir and leave standstill 9min, and adjust the content of each element in solution, then be transported to die casting machine injection chamber by conveying device and carry out die casting, die-casting technological parameter is set to: die casting pressure 78MPa, 200 DEG C of mold temperatures, make face shield shell blank.Polished in the voice box casing blank surface making again afterwards, then carry out the processing of piano baking finish process, comprise 4 acrylic primers of spraying, 3 unsaturated polyester (UP) piano lacquers, every last paint all will toast 5h under 60 DEG C of conditions, then uses 340 order sand paperings, make the thickness of piano baking vanish layer reach 7mm, make face shield shell.
Embodiment 4:
First preheating furnace is heated to 160 DEG C, then proceeds to melting furnace by following the magnesium alloy of choosing according to 4 compositions of embodiment in table 1 and percentage by weight thereof to put into after preheating furnace is incubated 1h, be heated to 700 DEG C and make magnesium alloy fusing.For preventing liquid magnesium alloy oxidizing fire, in fusion process by adding RJ-5 coverture to protect.Then be pressed into rare earth elements RE, after fusing, stir and leave standstill 10min, and adjust the content of each element in solution, then be transported to die casting machine injection chamber by conveying device and carry out die casting, die-casting technological parameter is set to: die casting pressure 80MPa, 220 DEG C of mold temperatures, make face shield shell blank.Polished in the main sound box housing blank surface making again afterwards, then carry out the processing of piano baking finish process, comprise 5 acrylic primers of spraying, 5 unsaturated polyester (UP) piano lacquers, every last paint all will toast 4h under 65 DEG C of conditions, then uses 350 order sand paperings, make the thickness of piano baking vanish layer reach 1mm, make face shield shell.
The voice box casing that embodiment of the present invention 1-4 is made carries out performance test, and test result is as shown in table 2.
The performance test results of the face shield shell that table 2: embodiment of the present invention 1-4 makes
As can be seen from Table 2, in magnesium alloy, add the mechanical properties such as the face shield shell intensity made after a certain amount of rare earth element to improve many, thereby extended the useful life of audio amplifier.
Application Example 1:
Choose arbitrarily the voice box casing making in embodiment of the present invention 1-4 and be applied in audio amplifier of the present invention, make audio amplifier of the present invention.
Comparative example 1:
The common audio amplifier of buying from market, face shield shell is made of plastics.
Comparative example 2:
The common audio amplifier of buying from market, face shield shell is made up of wooden materials.
Audio amplifier in the audio amplifier that Application Example 1 of the present invention is made and comparative example 1 and 2 compares, and comparative result is as shown in table 3.
Table 2
Audiovisual quality, color and luster and surface smoothness are that 10 people groups pass through the score mean value of respectively organizing afterwards by 1～5 point of scoring after test, and 5 are divided into full marks.
As can be drawn from Table 3, the audio amplifier that the present invention makes is compared with respect to common audio amplifier on market, audiovisual quality better, surface color is more bright-coloured, there is very strong visual impact, and speaker quality of the present invention is light, good rigidly, there is certain corrosion resistance, resistance to wear, easily scourings, protection against the tide, scratch-resistant, in the situation that not there is not mechanical damage, piano baking vanish layer after for many years still light as newly.Therefore the audio amplifier that, the present invention makes has the good market competitiveness.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (10)
1. a modified form multimedia loudspeaker box, comprise shell, shell is made up of drain pan and the face shield shell being fastened on drain pan, it is characterized in that, on face shield shell, be provided with some ventilation holes, on face shield shell, also have to the depressed part of drain pan one side depression, described depressed part bottom is provided with through hole, there is the inner fovea part caving inward in the both sides of drain pan, be provided with the handle that is arranged on one of them inner fovea part outside at drain pan outer wall, there is circular orientation projection at drain pan near one end of face shield shell, on face shield shell, be provided with the annular positioning groove inserting for the circular orientation projection for described, some first directed convex bodys of outer wall and the lateral cross section area of at least one the first directed convex body at drain pan are different from remaining first directed convex body lateral cross section area, the lateral cross section area that is provided with some the second directed convex bodys and at least one the second directed convex body at the lateral wall of face shield shell is different from remaining second directed convex body lateral cross section area, the first described directed convex body and the corresponding and docking mutually one by one of the second directed convex body, described drain pan bottom centre have extend internally and with the cylindrical portion of drain pan internal communication, described cylindrical portion and the drain pan formula that is connected as a single entity, there is heating panel in cylindrical portion away from one end of drain pan, be provided with between some radiating ribs and adjacent two radiating ribs and form heat dissipation channel at heating panel lateral surface, the material of described face shield shell is magnesium alloy materials, the surface of described face shield shell is also coated with piano baking vanish layer.
2. modified form multimedia loudspeaker box according to claim 1, it is characterized in that, it is characterized in that, described magnesium alloy composition is: Al:8.2-8.8%, Zn:0.45-0.75%, Mn:0.15-0.3%, RE:0.1-4.5%, Si≤0.02%, Ni≤0.001%, Fe≤0.003%, surplus is Mg and inevitable impurity.
3. modified form multimedia loudspeaker box according to claim 1, it is characterized in that, described cylindrical portion has the circular orientation portion extending internally away from one end of drain pan, described heating panel is arranged in circular orientation portion and it is circumferentially resisted against cylindrical portion inwall, described cylindrical portion and the circular orientation portion formula that is connected as a single entity.
4. according to the modified form multimedia loudspeaker box described in claim 1 or 3, it is characterized in that, described drain pan bottom outside wall is provided with some flexible angles, and described flexible angle is fixed on drain pan by connected structure.
5. modified form multimedia loudspeaker box according to claim 4; it is characterized in that; described face shield shell is provided with ring-shaped step and is located at the sheet catch net on ring-shaped step; the internal diameter that is provided with tubular column that some even circumferentials distribute and at least one tubular column on ring-shaped step is different from remaining tubular column internal diameter; the external diameter that is equipped with some keepers and at least one keeper on sheet catch net is different from remaining keeper external diameter, and described tubular column and keeper one by one corresponding and keeper insert in tubular column.
6. modified form multimedia loudspeaker box according to claim 5, it is characterized in that, in described drain pan, be provided with some first and strengthen column, in face shield shell, be provided with and described first strengthen column and second strengthen column one to one, described first strengthens being connected by demountable structure between column and the second reinforcement column.
7. modified form multimedia loudspeaker box according to claim 2, is characterized in that, described face shield shell preparation method comprises the following steps:
S1: first preheating furnace is heated to 130-160 DEG C, then magnesium alloy is put into preheating furnace is incubated 0.5-3h, then magnesium alloy is proceeded in melting furnace, be heated to 650-700 DEG C and make magnesium alloy fusing, be then pressed into rare earth elements RE, stir after fusing and leave standstill 5-10min;
S2: adjust the content of each element in solution, be then transported to die casting machine injection chamber by conveying device and carry out die casting, make face shield shell blank;
S3: polished in the above-mentioned face shield shell blank surface making, then carry out the processing of piano baking finish process, make face shield shell.
8. modified form multimedia loudspeaker box according to claim 7, is characterized in that, has also added coverture described in step S1 in fusion process, and described coverture is the one in RJ-2, RJ-5.
9. modified form multimedia loudspeaker box according to claim 7, is characterized in that, the pressure of die casting described in step S2 is 70-80MPa, and mold temperature is 180-220 DEG C.
10. modified form multimedia loudspeaker box according to claim 7, is characterized in that, the baking finish process of piano described in step S3 comprises 3-5 priming paint of spraying, 2-5 finish paint, every last paint all will toast 3-8h under 50-65 DEG C of condition, then uses the sand papering of 300-350 order; The thickness of described piano baking finish process piano baking vanish after treatment layer is 0.3-1.5mm, and described priming paint is acrylic primer, and described finish paint is unsaturated polyester (UP) piano lacquer.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108636740A (en) * | 2018-05-29 | 2018-10-12 | 广东粤迪厚创科技发展有限公司 | A kind of piano baking vanish furniture production technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101572851A (en) * | 2008-04-29 | 2009-11-04 | 沈阳航空工业学院 | Magnesium alloy integrally cast sound box and manufacturing method thereof |
| CN202772321U (en) * | 2012-07-02 | 2013-03-06 | 东莞富强电子有限公司 | Connector |
| CN203039845U (en) * | 2013-01-15 | 2013-07-03 | 深圳市视创光电技术有限公司 | Multifunctional music playing sound box |
| CN103200473A (en) * | 2013-04-15 | 2013-07-10 | 广州杰士莱电子有限公司 | Stereo with power amplifier integrated |
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| CN101572851A (en) * | 2008-04-29 | 2009-11-04 | 沈阳航空工业学院 | Magnesium alloy integrally cast sound box and manufacturing method thereof |
| CN202772321U (en) * | 2012-07-02 | 2013-03-06 | 东莞富强电子有限公司 | Connector |
| CN203039845U (en) * | 2013-01-15 | 2013-07-03 | 深圳市视创光电技术有限公司 | Multifunctional music playing sound box |
| CN103200473A (en) * | 2013-04-15 | 2013-07-10 | 广州杰士莱电子有限公司 | Stereo with power amplifier integrated |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108636740A (en) * | 2018-05-29 | 2018-10-12 | 广东粤迪厚创科技发展有限公司 | A kind of piano baking vanish furniture production technology |
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