CN203523008U - Sound box - Google Patents
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- CN203523008U CN203523008U CN201320457392.5U CN201320457392U CN203523008U CN 203523008 U CN203523008 U CN 203523008U CN 201320457392 U CN201320457392 U CN 201320457392U CN 203523008 U CN203523008 U CN 203523008U
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Abstract
The utility model relates to a sound box, which comprises a main shell, a top cover and a bottom plate, wherein the main shell comprises two end faces and a circular side wall, the circular side wall extends toward two sides and form the two end faces, and the circular side wall is provided with at least one loudspeaker positioning hole used for accommodating a loudspeaker unit, and an accommodating space is formed at the inner side surface of the circular side wall; the top cover is abutted against one end face of the main shell; the bottom plate is abutted against the other end face of the main shell; and the inner side surface of the circular side wall is provided with a plurality of ribs, thereby enabling the inner side surface to be an irregular surface. Therefore, the inner side surface with the irregular surface enables the reflection direction of sound waves generated by the loudspeaker unit in the accommodating space to be changed and enables the amplitude of the sound waves to be reduced, thereby reducing a circumstance of standing waves.
Description
Technical field
The utility model is about a kind of audio amplifier and manufacture method thereof, especially refers to a kind of audio amplifier that is applicable to eliminate standing wave and reduces resonance.
Background technology
General early stage known audio amplifier, on its external form profile, can be the related geometry such as rectangle and square, and indoor design is generally plane, plane symmetry is designed, yet, continuous development along with science and technology, also more clear for acoustics and acoustic research, indoor design is that to plane symmetry, design tends to make the sound wave that loud speaker sends to form standing wave (Standing Wave) with the reflective sound wave interaction of each face generation in audio amplifier inside to plane.
At ripple, transmit viewpoint, so-called standing wave is exactly that two contrary ripples in the direction of propagation when propagate on same level line, the ripple of both mutual superpositions, and in known audio amplifier, it similarly is square audio amplifier, inside has six planes altogether, it is upper and lower, left and right, and the plane of front and back is parallel to each other, may have following standing wave type produces, it similarly is the axial standing wave (Axial Standing Wave) being caused by two corresponding flats, the tangential standing wave being caused by four planes (Tangential Standing Wave), and six caused oblique standing waves of plane (Oblique Standing Wave), all can have a strong impact on tonequality and the definition of sound wave that loud speaker sends.
Moreover, in general, during due to audio amplifier mechanical oscillation, can make the tonequality that loud speaker is sounded produce infringement, or be produce vibration and then cause the injured situation of tonequality because amplitude that loud speaker is sounded causes excessively by force audio amplifier, dealer occurs for fear of this situation, and under the demand of high tone quality high-facsimile speaker system, require voice box casing to reach certain thickness to avoid the generation of mechanical oscillation, and in the selection of audio amplifier material, can select the good material of density uniformity, similarly be to be generally log in the selected material of audio amplifier of seeing on the market the speaker system of high standard, expensive, non-ordinary consumer can be born.
Utility model content
The purpose of this utility model is to provide a kind of audio amplifier, it is an irregular surface that institute has audio amplifier inner surface, can effectively destroy loud speaker in the reflection direction of the inner sound wave that sends of audio amplifier, and then reduce the situation that standing wave produces, the fidelity of sound signal is improved.
For achieving the above object, the utility model one is implemented aspect a kind of audio amplifier is provided, and it comprises: a main casing, a top cover and a base plate.This main casing, there is an accommodation space, this main casing comprises biend and a ring-side wall, this ring-side wall extends to form this biend toward both sides respectively, and be provided with at least one loud speaker location hole in this ring-side wall, in order to an accommodating loudspeaker unit, an inner surface of this ring-side wall forms this accommodation space; Top cover, connects an end face that is butted on this main casing; And base plate, connect the other end that is butted on this main casing; Wherein, this inner surface of this ring-side wall forms a plurality of ribs, and making this inner surface is an irregular surface.
Therefore, audio amplifier of the present utility model can by the inner surface of ring-side wall, formed irregular surface sends loudspeaker unit in accommodation space the change of acoustic reflection direction and the reduction of amplitude size, reach and reduce that standing wave produces and the object of the muddy former sound wave of echo.
In audio amplifier of the present utility model, each rib can comprise a protuberance, and this protuberance is perpendicular to this biend.
Further, each rib can comprise this protuberance with a shape of cross section, the optional free corner taper of shape of cross section, circle, taper shape, square, trapezoidal and group that all the other non-geometric cross-sectional shape combine.And, the shape of cross section of the protuberance that each rib has is identical or different, also therefore, between a plurality of ribs, also can form a plurality of depressed parts, and then form and to replace continuously formed irregular surface by protuberance and depressed part, it has irregularly shaped and height, while making sound wave be incident in this irregular surface, can produce distributed reflection and diffraction by concavo-convex irregular surface, and then reduce formation and the reflected sound wave amplitude of standing wave.
In audio amplifier of the present utility model, formed this accommodation space of this inner surface of this ring-side wall can have a vertical sectional shape, and this vertical sectional shape is a rectangle, a parallelogram, a circle, one oval or one trapezoidal.
In audio amplifier of the present utility model, this top cover can be a flat board, a circular arc lid, or has a hollow or the solid lid of an angle of inclination end face.
In addition, ring-side wall can comprise two sidewalls, a preposition wall and a rear wall, and this rear wall and this preposition wall are to connect respectively this two sidewall, and this preposition wall is provided with this at least one loud speaker location hole.
In audio amplifier of the present utility model, main casing is that via one, to shape (molding) made, and this shapes is an injection molding (Injection molding), an extrusion molding (Extrusion molding) or one compressing (Compressing molding).Be preferably, this main casing is made via extrusion molding, and this main casing is one of the forming.Therefore, and then reduce the flow process of manufacturing audio amplifier, and effectively reduce manufacturing cost.
In audio amplifier of the present utility model, this main casing can have plural hole, and this plural number hole is through this biend and this ring-side wall; Further, square, the rectangle of the optional freedom one of the cross section shape of each hole, a circle, an ellipse, a polygonal, a pyramid, a taper shape, a trapezoidal and group that all the other non-geometric cross-sectional shape combine; In addition, each hole can be inserted a damping material.
In audio amplifier of the present utility model, this base plate can be provided with an air vent hole or plural air vent hole.
In audio amplifier of the present utility model, this inner surface of this ring-side wall is also provided with a sound absorption unit.
Accompanying drawing explanation
Fig. 1 is the audio amplifier exploded view of the utility model one preferred embodiment.
Fig. 2 is the audio amplifier schematic diagram of the utility model one preferred embodiment.
Fig. 3 is that the audio amplifier shown in Fig. 2 is along the longitudinal sectional view of lead-in wire III-III.
Fig. 4 is that the audio amplifier shown in Fig. 2 is along the transverse sectional view of lead-in wire IV-IV.
Fig. 5 is the schematic diagram of the speaker system of the utility model one preferred embodiment.
Fig. 6 is the calcspar of the speaker system of the utility model one preferred embodiment.
Fig. 7 is the schematic diagram of the speaker system of a comparative example.
Fig. 8 is the schematic diagram that speaker system test of the present utility model is put.
Fig. 9 is the frequency response test schematic diagram of the speaker system of the utility model one preferred embodiment and a comparative example.
Figure 10 is the transverse sectional view of the audio amplifier of another preferred embodiment of the utility model.
Figure 11 is the transverse sectional view of the audio amplifier of the another preferred embodiment of the utility model.
Primary clustering symbol description in accompanying drawing:
1 audio amplifier, 2 main casings, 21 first end faces, 22 second end faces, 23 ring-side walls, 230 inner surfaces, 231 preposition walls, 232,233 sidewalls, 234 rear walls, 24 ribs, 241 protuberances, 242 depressed parts, 25 loud speaker location holes, 26 holes, 27 holes, 31 top covers, 32 base plates, 321 air vent holes, 4 loudspeaker units, 5 speaker systems, 50 circuit boards, 501 source of sound input parts, 502 channel-splitting filters, 6 speaker systems, 61 ring-side walls, 610 inner surfaces, 70 positions to be measured, 71 audio signal reception devices, 72 analytical equipments, SO sound source signal, S accommodation space.
Embodiment
Refer to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 are respectively exploded view and the schematic diagram of the present embodiment.Shown in Fig. 1 and Fig. 2, a kind of audio amplifier 1 comprises: a main casing 2, a top cover 31 and a base plate 32.Main casing 2 is that via one, to shape (molding) made, has an accommodation space S, and main casing comprises one first end face 21, one second end face 22 and a ring-side wall 23.Ring-side wall 23 is toward both sides, to extend to form the first end face 21 and the second end face 22 respectively, and be provided with three loud speaker location holes 25 in ring-side wall 23, each loud speaker location hole 25 is in order to an accommodating loudspeaker unit 4, and an inner surface 230 of ring-side wall forms accommodation space S; Top cover 31 connects the first end face 21 that is butted on main casing 2; And one base plate 32 connect the second end face 22 that is butted on main casing 2, and base plate 32 is provided with an air vent hole 321, make when three loudspeaker unit 4 runnings, air displacement in audio amplifier 1 can be via air vent hole 321 transmission, auxiliary three loudspeaker units promote more air capacities, and then reach the effect that effective audio frequency extends.Wherein, the inner surface 230 of ring-side wall 23 forms a plurality of ribs 24, and making inner surface 230 is an irregular surface.
Please continue to refer to Fig. 2, and consult in the lump Fig. 1.Further, the ring-side wall 2 of main casing 2 comprises the preposition wall 231 of two sidewalls 232,233, one and a rear wall 234, rear wall 234 and preposition wall 231 are to connect respectively two sidewalls 232,233, three loud speaker location holes 25 are arranged on preposition wall 231, and are communicated in idle space S.Therefore, audio amplifier 1 is installed with three loudspeaker units 4 by three loud speaker location holes 25 on preposition wall 231 becomes the speaker system by front sounding, and described speaker system and frequency response content measurement will explain in Fig. 5 and Fig. 7.
Further, the group that the material of main casing 2, top cover 31 and base plate 32 can select respectively free polyvinyl chloride (PVC), polypropylene (PP), polyethylene (PE), acrylonitrile-butadiene-styrene copolymer (ABS resin), nylon (nylon), wood plastic composite (WPC), polybutylene terephthalate (PBT) (PBT), polyester (PET), Merlon (PC), polyethylene terephthalate (Polyethylene Terephthalate, PET) and upgrading material thereof to form.Preferably, the density of material of main casing 2, top cover 31 and base plate 32 can be in the scope of 0.9～2.0 gram/cubic centimeter.In the present embodiment, the material of main casing 2, top cover 31 and base plate 32 is all polypropylene upgrading composition, and its density is 0.90 to 2.0 gram/cubic centimeter.Therefore, by audio amplifier 1 integral material, it is the described above material that density uniformity is good and density is high, can effectively reduce the inhomogeneous situation of distributed sound wave occurs, and the highdensity material providing can effectively make audio amplifier 1 integral thickness reduce, also keep certain fastness, avoid the situation of mechanical oscillation to produce simultaneously.
Therefore, audio amplifier 1 of the present utility model can be made by the formed irregular surface of inner surface 230 of ring-side wall 23 the acoustic reflection direction that loudspeaker unit 4 sends in accommodation space S change and the decline of amplitude size, reduces the situation of the muddy former sound wave of standing wave production and echo.
In order more to clearly state audio amplifier of the present utility model design, refer to Fig. 3 and Fig. 4, be respectively the audio amplifier shown in Fig. 2 along the longitudinal sectional view of lead-in wire III-III and along the transverse sectional view of lead-in wire IV-IV.As shown in Figure 3, the formed accommodation space S of the inner surface 230 of ring-side wall 23, has a vertical sectional shape, and vertical sectional shape can be a rectangle, a parallelogram, a circle, one oval or one trapezoidal.In the present embodiment, it is parallel trapezoidal that accommodation space S has a vertical sectional shape, make the height of ring-side wall 23 and the length of width of main casing 2 neither identical, and length ratio is non-is between the two integral multiple, while avoiding wide high size mutually to occur integral multiple, with regard to equaling, allow length send how identical resonance frequency and overlap.When wide high size occurs integral multiple mutually, with regard to equaling, allow length send how identical resonance frequency and overlap, and these identical resonance frequencys can strengthen the energy of sound because mutually overlap, can make audio amplifier 1 standing wave produce probability and promote.And by shown in Fig. 1 and Fig. 2, under this vertical sectional shape design, the first end face 21 and the second end face 22 are respectively the angle of inclination having with respect to main casing 2 center longitudinal axis symmetries, make top cover 31 and base plate 32 be respectively above-mentioned angle of inclination and connect to the first end face 21 and the second end face 22, make top cover 31 and base plate 32 for non-parallel relative.Top cover 31 and base plate 32 can be respectively a flat board, a circular arc lid, or have a hollow lid or a solid lid of an angle of inclination end face, and in the present embodiment, top cover 31 and base plate 32 are all a flat board.
Refer to Fig. 4, and consult in the lump Fig. 3, each rib 24 comprises a protuberance 241, protuberance 241 is in fact perpendicular to the first end face 21 and the second end face 22, wherein, protuberance 241 has a shape of cross section, and it selects free pyramid, circle, taper shape, square, the group that trapezoidal, polygonal and all the other non-geometries combine.The cross-sectional shape of the protuberance 241 that each rib 24 has can be identical or different.Between each rib 24 protuberance is adjacent, also can form a depressed part 242, and then formation is replaced continuously and is made inner surface 230 become irregular surface by protuberance 241 and depressed part 242, it has irregularly shaped and height, while making sound wave be incident in inner surface 230, can produce distributed reflection and diffraction by concavo-convex irregular surface, and then reduce formation and the reflected sound wave amplitude of standing wave.
In sum, audio amplifier 1 of the present utility model can be by the inner surface 230 of ring-side wall 23 the non-integral multiple ratio of length-width ratio of formed concavo-convex irregular surface and accommodation space S acoustic reflection direction that loudspeaker unit 4 sends in accommodation space S is changed and amplitude size declines, reduce the situation of the muddy former sound wave of standing wave production and echo.
In addition, in the present embodiment, a kind of manufacture method of audio amplifier 1 is also provided, refer to Fig. 1 and Fig. 2, it comprises the following steps: by a machine-shaping, form a main casing 2, main casing 2 comprises one first end face 21, one second end face 22 and a ring-side wall 23, ring-side wall 23 extends to form the first end face 21 and the second end face 22 toward both sides respectively, wherein, one inner surface 230 of ring-side wall 23 forms a plurality of ribs 24, making inner surface 230 is an irregular surface, and an inner surface 230 of ring-side wall 23 forms accommodation space S; Be provided with three loud speaker location holes 25 in ring-side wall 23, in order to an accommodating loudspeaker unit 4; One top cover 31 is set and connects an end face 21 that is butted on main casing 2; And a base plate 32 is set connects the other end 22 that is butted on main casing 2.
In the present embodiment, main casing 2 is made via an extrusion molding, wherein, the material of main casing 2 is resin upgrading composition, in the present embodiment, the material of main casing 2 is polypropylene upgrading composition, it includes polypropylene that every hectogram umber content range is 40～65Phr (every hectogram umber, parts per hundreds of rubber (or resin)), has inorganic particle and the every hectogram umber content range that every hectogram umber content range is 15～35Phr is 1～5Phr additive; Wherein, inorganic particle can be calcium carbonate, mica, barium sulfate, aluminium hydroxide or magnesium hydroxide; And additive can be zinc stearate or antioxidant.Further, allow polypropylene upgrading composition mix, before carrying out extrusion molding main casing 2, can utilize a single shaft or twin shaft screw rod extrusion molding machine by polypropylene, inorganic particle and the additive technique of mixing, and then produce the ester grain of the polypropylene upgrading composition mixing.In the present embodiment, by twin shaft screw rod extrusion molding machine by polypropylene, inorganic particle and the additive technique of mixing, the ambient temperature range of this melt molding is between 150 degree to 300 degree, and the screw speed of single shaft extrusion molding machine system is between 50～350rpm (rotating speed per minute, revolution (s) per minute) between, carry out, after extrusion for example, by pelletizing method (, many strands film (strand die) and produce the ester grain of the polypropylene upgrading composition mix.
Accordingly, the ester grain placement one single shaft screw rod extrusion molding machine with the die design of main casing 2 that gained is produced to the polypropylene upgrading composition mixing carries out extrusion molding, wherein, the ambient temperature range of this extrusion molding is between 150 degree to 300 degree, and the screw speed of single shaft extrusion molding machine is between 50～300rpm (rotating speed per minute, revolution (s) per minute) between, follow, by the single shaft screw rod extrusion molding machine with the die design of main casing 2, carry out extrusion molding and produce main casing 2, placing a stock mould and a bosh (or directly cooling by air) shapes and chilling temperature, finally use one get draw machine by sizing after main casing 2 in order to all machines, just get required length, can obtain the finished product of the main casing 2 of the present embodiment.Therefore, in the present embodiment, main casing 2 is one of the forming, and then reduces the flow process of manufacturing audio amplifier, and effectively reduces manufacturing cost.
Refer to Fig. 3 and Fig. 4, in the present embodiment, audio amplifier 1 via the manufacturing of described audio amplifier manufacture method, each rib 24 comprises a protuberance 241, protuberance 241 is in fact perpendicular to the first end face 21 and the second end face 22, wherein, protuberance 241 has a shape of cross section, the group that it selects free pyramid, circle, taper shape, square, trapezoidal, polygonal and all the other non-geometries to combine.The cross-sectional shape of the protuberance 241 that each rib 24 has can be identical or different.Between each rib 24 protuberance is adjacent, also can form a depressed part 242, and then formation is replaced continuously and is made inner surface 230 become irregular surface by protuberance 241 and depressed part 242, it has irregularly shaped and height, while making sound wave be incident in inner surface 230, can produce distributed reflection and diffraction by concavo-convex irregular surface, and then reduce formation and the reflected sound wave amplitude of standing wave.In addition, main casing 2 also can have plural hole, makes plural hole (not shown) through the first end face 21, the second end face 22 and ring-side wall 23.
In sum, a kind of technique of providing the utility model reduces, audio amplifier manufacture method cheaply, by extrusion molding, produce integrally formed main casing 2, make the formed concavo-convex irregular surface of inner surface 230 of ring-side wall 23 and the non-integral multiple ratio of length-width ratio of accommodation space S of main casing 2 that the acoustic reflection direction that loudspeaker unit 4 sends in accommodation space S is changed and the decline of amplitude size, reduce the situation of the muddy former sound wave of standing wave production and echo, produce a high-quality audio amplifier.
Referring to Fig. 5, is the schematic diagram of the speaker system of the utility model one preferred embodiment, sees also Fig. 1 to Fig. 4.As shown in Figure 5, for upper 3 loudspeaker units 4 of 3 loud speaker location holes 25 device on the preposition wall 231 of the audio amplifier 1 of shown the utility model one preferred embodiment of Fig. 2 become a speaker system 5, wherein, three loudspeaker units 4 are divided into the loudspeaker unit 4 of high frequency, intermediate frequency and low frequency, low-frequency range is 30 to 150 hertz, intermediate frequency range is 150 to 5000 hertz, and high-frequency range is 5 to 20 KHz.
Referring to Fig. 6, is the calcspar of the speaker system of the utility model one preferred embodiment.A source of sound input part 501 on a circuit board 50 in a sound source signal SO input loudspeaker system 5, a channel-splitting filter 502 of connection three loudspeaker units 4 on circuit board 501 judges that according to sound source signal being passed to three loudspeaker units 4 sends a sound wave.
Referring to Fig. 7, is the schematic diagram of the speaker system of a comparative example.As shown in Figure 7, described speaker system 6 is with roughly the same described in the speaker system 5 of the utility model one embodiment shown in Fig. 5, also be three identical loudspeaker units 4 of installing, only difference be in, an inner surface 610 of the ring-side wall 61 that speaker system 6 has is a smooth surface.
Yet the situation effect that only reduces standing wave if only terminate in smooth surface by non-parallel symmetry between face and face is limited.Therefore, the utility model initiatively carries out the sound system test of preferred embodiment and comparative example.Referring to Fig. 8, is the schematic diagram that speaker system test of the present utility model is put.As shown in Figure 8, different speaker systems can be positioned over an identical position 70 to be measured when test, the sound wave that the speaker system of being put by audio signal reception device 71 detectings is sent, and, the frequency response of the sound wave receiving by an analytical equipment 72 that connects audio signal reception device, analyzed.Further, audio signal reception device 71 can be a microphone, and analytical equipment 72 can be a calculator with frequency response analysis software.
Therefore, the sound system 5 of preferred embodiment of the present utility model and the sound system 6 of comparative example, the sound wave that can send respectively according to input same audio source signal, is received by audio signal reception device 71, and by analytical equipment 72, analyzed the difference of two sound system 5,6 frequency responses.
Referring to Fig. 9, is the frequency response test schematic diagram of the speaker system of the utility model one preferred embodiment and a comparative example, sees also Fig. 5, Fig. 7 and Fig. 8.As shown in Figure 9, in the scope of 0 to 10000 hertz of frequency, the obvious frequency response in medium and low frequency part of speaker system 5 (being denoted as embodiment) is more clear and energy is excellent in speaker system 6 (being denoted as a comparative example), clear the seeing in medium and low frequency scope of frequency response that speaker system 6 is shown has many irregular and unsmooth crests, the audio amplifier inner surface 610 that represents this speaker system 6 is that the standing wave that a smooth surface mainly produces for medium-high frequency scope is eliminated comparatively effectively (please watch 5000 to 10000 hertz of Fig. 9 frequencies), and the standing wave producing for medium and low frequency scope reduction effect is limited.Review, the speaker system 5 of a preferred embodiment of the present utility model, speaker system 5 is protuberance 241 and the depressed part 242 perpendicular to this first end face 21 and the second end face by plural rib 24 formation on the inner surface 230 of the ring-side wall 23 of main casing 2, when the accommodation space S that sound wave is had at the audio amplifier 1 of speaker system 5 walks to and touches inner surface 230, the non-reflection direction that only terminates in changes, also comprise that sound wave arrives at a generation minute scattered reflection above protuberance 241, and sound wave arrives at produce diffraction above depressed part, and then the amplitude that reduces reflection and diffraction is big or small, therefore, speaker system 5 can effectively reduce the situation of standing wave production and the muddy sound wave that sound source signal produces of echo.
Referring to Figure 10, is the transverse sectional view of the audio amplifier of another preferred embodiment of the utility model, please also refer to Fig. 1 and Fig. 2.As shown in Figure 10, roughly the same described in described audio amplifier and one preferred embodiment of the utility model shown in Fig. 4, only difference be in, plural hole 26 is arranged at main casing 2, plural hole 26 is through the first end face 21, the second end face 22 and ring-side wall 23.In the present embodiment, the cross section shape of each hole 26 is one round.In addition, in the present embodiment, main casing 2 and be arranged at plural hole 26 one-body molded generation by an extrusion molding of main casing 2, need not additional fabrication steps.
Further, each hole 26 is inserted a damping material, the optional group that freely uses air, iron sand, rubber, plastics and resin to form of damping material.In the present embodiment, damping material is air.Therefore, hole design can effectively reduce to penetrate the echo amplitude intensity of audio amplifier and reduce solid mechanical vibrational energy and makes it change heat energy into and dissipate thus.In addition, in the present embodiment, the inner surface 230 of ring-side wall 23 also can be provided with a sound absorption unit, and this sound absorption unit can be mineral wool, asbestos, acetic acid is cotton, nylon is cotton or artificial cellucotton, can effectively reduce audio amplifier and for medium-high frequency sound wave, produce the situation of standing wave and reflection.
In addition square, the rectangle of the optional freedom one of each hole cross section shape, a circle, an ellipse, a polygonal, a free corner taper, a taper shape, a trapezoidal and group that all the other non-geometric cross-sectional shape combine.Referring to Figure 11, is the transverse sectional view of the audio amplifier of the another preferred embodiment of the utility model, please also refer to Fig. 1 and Fig. 2.As shown in Figure 10, roughly the same described in described audio amplifier and one preferred embodiment of the utility model shown in Fig. 4, only difference be in, plural number hole 26 is to be arranged at main casing 2, plural number hole 27 is through the first end face 21, the second end face 22 and ring-side wall 23, wherein, this plural number hole 27 is comprised of the hole of different non-geometric cross-sectional shape.
Above-described embodiment is only given an example for convenience of description, and the interest field that the utility model is advocated should be as the criterion certainly described in the interest field of application, but not only limits to above-described embodiment.
Claims (10)
1. an audio amplifier, is characterized in that, comprising:
One main casing, there is an accommodation space, this main casing comprises biend and a ring-side wall, this ring-side wall extends to form this biend toward both sides respectively, and be provided with at least one loud speaker location hole in this ring-side wall, in order to an accommodating loudspeaker unit, an inner surface of this ring-side wall forms this accommodation space;
One top cover, connects an end face that is butted on this main casing; And
One base plate, connects the other end that is butted on this main casing;
Wherein, this inner surface of this ring-side wall forms a plurality of ribs, and making this inner surface is an irregular surface.
2. audio amplifier as claimed in claim 1, is characterized in that, each rib comprises a protuberance, and this protuberance is perpendicular to this biend.
3. audio amplifier as claimed in claim 2, is characterized in that, each rib comprises this protuberance with a shape of cross section, and this shape of cross section selects free pyramid, circle, taper shape, the group that square, trapezoidal and polygonal combines.
4. audio amplifier as claimed in claim 1, is characterized in that, formed this accommodation space of this inner surface of this ring-side wall has a vertical sectional shape, and this vertical sectional shape is a rectangle, a parallelogram, a circle, one oval or one trapezoidal.
5. the audio amplifier as described in claim 1 or 4, is characterized in that, this top cover is a hollow lid or the solid lid that a flat board, a circular arc covered, had an angle of inclination end face.
6. the audio amplifier as described in claim 1 or 4, is characterized in that, this ring-side wall comprises two sidewalls, a preposition wall and a rear wall, and this rear wall and this preposition wall connect respectively this two sidewall, and this preposition wall is provided with this at least one loud speaker location hole.
7. audio amplifier as claimed in claim 1, is characterized in that, this main casing is one of the forming.
8. audio amplifier as claimed in claim 1, is characterized in that, this main casing has plural hole, and this plural number hole is through this biend and this ring-side wall.
9. audio amplifier as claimed in claim 8, is characterized in that, the choosing of the cross section shape of each hole is one square a, circle, an ellipse, a polygonal, a free corner taper, conical and trapezoidal a combined group freely.
10. audio amplifier as claimed in claim 1, is characterized in that, this base plate is provided with an air vent hole or a plurality of air vent hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320457392.5U CN203523008U (en) | 2013-07-29 | 2013-07-29 | Sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320457392.5U CN203523008U (en) | 2013-07-29 | 2013-07-29 | Sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203523008U true CN203523008U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320457392.5U Expired - Fee Related CN203523008U (en) | 2013-07-29 | 2013-07-29 | Sound box |
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| Country | Link |
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| CN (1) | CN203523008U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349223A (en) * | 2013-07-29 | 2015-02-11 | 雅瑟音响股份有限公司 | Sound box and manufacturing method thereof |
| CN108616784A (en) * | 2018-06-14 | 2018-10-02 | 合肥品冠慧享家智能家居科技有限责任公司 | It is a kind of that there is the glass panel for improving the poly- audio fruit of microphone |
| CN111052760A (en) * | 2017-09-13 | 2020-04-21 | 福雷默合同会社 | Speaker device and sound box |
| CN115474140A (en) * | 2021-06-11 | 2022-12-13 | 海信视像科技股份有限公司 | Refrigerator with a door |
-
2013
- 2013-07-29 CN CN201320457392.5U patent/CN203523008U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349223A (en) * | 2013-07-29 | 2015-02-11 | 雅瑟音响股份有限公司 | Sound box and manufacturing method thereof |
| CN111052760A (en) * | 2017-09-13 | 2020-04-21 | 福雷默合同会社 | Speaker device and sound box |
| CN108616784A (en) * | 2018-06-14 | 2018-10-02 | 合肥品冠慧享家智能家居科技有限责任公司 | It is a kind of that there is the glass panel for improving the poly- audio fruit of microphone |
| CN115474140A (en) * | 2021-06-11 | 2022-12-13 | 海信视像科技股份有限公司 | Refrigerator with a door |
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