CN201830435U - Sound box - Google Patents
Sound box Download PDFInfo
- Publication number
- CN201830435U CN201830435U CN201020502249XU CN201020502249U CN201830435U CN 201830435 U CN201830435 U CN 201830435U CN 201020502249X U CN201020502249X U CN 201020502249XU CN 201020502249 U CN201020502249 U CN 201020502249U CN 201830435 U CN201830435 U CN 201830435U
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- China
- Prior art keywords
- frequency passive
- active loudspeaker
- low frequency
- audio amplifier
- loudspeaker unit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a sound box, which comprises an airtight box body. The same side of the sound box is provided with at least four active loudspeaker units and one low-frequency passive radiation part, wherein the active loudspeaker units are symmetrically distributed relative to the low-frequency passive radiation part. The active loudspeaker units have the same structures, dimensions, processes and performance characteristics. The number of the active loudspeaker units can be even; the active loudspeaker units are vertically and symmetrically arranged relative to the low-frequency passive radiation part; the active loudspeaker units distributed at the same side of the low-frequency passive radiation part share the same sound track, thereby, a dual-track loudspeaker system is formed. The active loudspeaker units can also be symmetrical at the center of the low-frequency passive radiation part. The device can effectively utilize the space of the sound box, simultaneously improves the driving capacity to promote the sound effect and is suitable for the field of portable mini-sound boxes.
Description
Technical field
The utility model relates to a kind of audio amplifier, relates in particular to the integrated audio amplifier of a kind of multichannel.
Background technology
Existing multimedia loudspeaker box equipment adopts split-type structural more, as for 2.1 sound box systems, except having a Super Bass Loudspeaker Enclosure, also has the left and right acoustic channels audio amplifier; For 5.1 sound box systems, i.e. 2 preposition audio amplifiers, 1 mid-and 2 rearmounted audio amplifier of audio amplifier; 6.1 and 7.1 audio amplifier has appearred at present on the market.
The detachable speaker box system needs complicated connecting line construction and putting position, is used for sound field, the higher field of positioning requirements more.For mass consumption person, they more need a kind of portable, user-friendly for operation, outward appearance fashion, can realize the audio amplifier than the high tone quality performance simultaneously again.Put and complicated connecting line construction with regard to the position that need not specialty like this, and the energy conserve space, maintenance difficulties reduced.
The mini audio amplifier overwhelming majority is many speaker combination, and the appropriate design to making up between loudspeaker unit structure and each unit how in the hope of making full use of the confined space, less distortion and better acoustics, is that everybody does one's utmost the problem that solves always.
As Fig. 1, Fig. 2 and shown in Figure 3, be the front view of existing 3 kinds of mini speaker systems.01 is airtight casing, and 02 is the low frequency passive radiator, mainly is made of ring and oscillating plate, and it is designed to runway shape to obtain bigger vibration radiation area, reaches better bass effect.11 and 12 is a kind of active loudspeaker unit, and they are identical with 02 surface texture, and doing like this to increase the vibration radiation area, but because the resonance that surface vibration will bring, distortion are more, distortion is bigger.22 and 23 is second kind of initiatively loudspeaker unit, improvement as first kind of structure, its vibrating diaphragm is designed to have the similar awl basin structure of irregular surface, more approach the acoustic radiating pattern, eliminate the problem that reflection because of sound, interference etc. bring simultaneously, but since the asymmetry of above-below direction and left and right directions (illustrated orientation), the radiation intensity difference on the both direction, and distortion is also bigger.Therefore, initiatively structure-circle of loudspeaker unit employing 32 and 33 is bored basin to realize less distortion.But the direct shortcoming that this structure is brought is exactly that space availability ratio is low.
Summary of the invention
In order to solve the problem that above-mentioned audio amplifier brings, the utility model proposes a kind of audio amplifier, comprise an airtight casing, same one side side at described audio amplifier is equipped with at least 4 initiatively loudspeaker unit and at least 1 low frequency passive radiator, described at least 1 low frequency passive radiator has constituted the low frequency passive radiant section, and described active loudspeaker unit is symmetrically distributed with respect to stating the low frequency passive radiant section.Described active loudspeaker unit has identical structure, size, technology and performance characteristics.Described active loudspeaker unit can be even number, they are about described low frequency passive radiant section vertical symmetry, the active loudspeaker unit that is distributed in low frequency passive radiant section homonymy is same sound channel, thereby constituted the two-way speaker system, its position of active loudspeaker unit that is positioned at described low frequency passive radiant section homonymy is a maximum likelihood ground decreased distance.Described active loudspeaker unit also can be about described low frequency passive radiant section center symmetry.Described casing can be cylinder, and the tank surface at described active loudspeaker unit and low frequency passive radiator place is a rectangle.
Device of the present utility model can effectively utilize the audio amplifier space, strengthens driving force simultaneously, and audio is got a promotion, and is suitable for portable mini audio amplifier field.
Other features and advantages of the utility model will be set forth in the following description, perhaps understand by implementing the present invention.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure and method in the specification of being write, claims and accompanying drawing.
Introduce preferred embodiment below in conjunction with accompanying drawing, the device that the utility model proposes is described in detail.Should be noted that the purpose of accompanying drawing just is convenient to the explanation to the utility model specific embodiment, is not a kind of unnecessary narration or to the restriction of the utility model scope.
Description of drawings
Fig. 1 is the front view of first kind of mini loudspeaker box structure in the prior art.
Fig. 2 is the front view of second kind of mini loudspeaker box structure in the prior art.
Fig. 3 is the front view of the third mini loudspeaker box structure in the prior art.
Fig. 4 is the structure chart of an embodiment of the utility model.
Fig. 5 is the structure chart of the active loudspeaker unit in the present embodiment.
Embodiment
Be illustrated in figure 4 as the structure chart that this installs disclosed speaker system.Wherein, (b) being the front view of this device, (a) is the sectional view along the A-B line.Wherein, 01 is casing, and 41,42,43 and 44 is 4 initiatively loudspeaker units, and 02 is the low frequency passive radiator.41,42,43,44 and 02 be assembled on the same surface of casing 01, and formed airtight casing with casing 01.Further, 41 and 42 constitute L channel, and 43 and 44 constitute R channel.02 as the shared low frequency radiation device of left and right acoustic channels, is positioned over the centre of left and right acoustic channels unit.
As shown in Figure 5, be the schematic diagram of the active loudspeaker unit structure that this example adopted.It has conical diaphragm 51, vibrates under the promotion of voice coil loudspeaker voice coil 56; Ring 52 plays sealing, support and support; Dust cap 57 can prevent dust again as its oscillating action of a part of vibrating diaphragm simultaneously; Centring disk 55 can be vibrating diaphragm 51 up-down vibration as spring.Support the joint portion of voice coil loudspeaker voice coil 56 and vibrating diaphragm 51 simultaneously; 54 is magnetic circuit system, produces magnetic field, for voice coil loudspeaker voice coil 56 provides tone currents; 53 is the basin frame, connects magnetic circuit system and vibrational system, plays a supportive role simultaneously.
When voice signal is added on described four active loudspeaker units, in voice coil loudspeaker voice coil, produce active force and drive the conical diaphragm vibration, give off high-frequency signal by the active loud speaker.The motion of its vibrating diaphragm can cause air in the casing 01 to be compressed and expands, and under the effect of air pressure change, passive radiator 02 vibrates, the radiation low frequency signal.
As shown in Figure 4,41 and 43 and 42 and 44 is to be symmetrically distributed with respect to 02.41 and 42 positions are adjacent, and distance very near (43 and 44 is as the same), can guarantee that like this they have close sound source position.
Described 4 active loudspeaker units, their technology, structure, size and performance characteristics are identical, can reduce the complexity of assembling on the one hand, improve rate of finished products, on the other hand, can reduce distortion.
The structure of this device in Fig. 3 increased the active cell swept area, reduced the extent of deterioration to loud speaker, can promote tonequality again.
We suppose that power amplifier unit is operated under the perfect condition, to the output voltage U of Fig. 3 system (system 1) and the utility model apparatus system (system 2)
OutEquate.31,32,41,42,43 and 44 have identical resistance value R, and the active loudspeaker unit of system 2 is parallel-connection structure, and promptly system 1 equates with the 2 impedance R of system.Therefore, the acoustic pressure of two systems equates (P=U
2/ R).
The system 1 initiatively vibration area of loudspeaker unit is S1, and the system 2 initiatively vibration area of loudspeaker unit is S2, S2=2S1.
Therefore, the Oscillation Amplitude of system's 2 active loudspeaker units is 1/2 of systems 1.The beneficial effect that brings thus is: loudspeaker unit parts (as voice coil loudspeaker voice coil 56, centring disk 55 and vibrating diaphragm 51) pressure reduces, loss reduces, machinery to it requires and can decrease in when design so, as the torsional strength that reduces parts can reduce the cost of raw material (remedying system 2 increases with respect to the cost that system 1 brings); Simultaneously, because Oscillation Amplitude is less relatively, therefore the mechanical distortion that brings is also less thereupon, and its acoustical quality can get a promotion.The above only is a preferred implementation of the present utility model, but they are not the limitations of the utility model scope.Should be pointed out that for those skilled in the art under the prerequisite that does not break away from the principle of the invention, some improvements and modifications of having done also should be considered as within the protection range of the present utility model.Such as, initiatively loudspeaker unit 41 and 42 be distributed as one on the other, 43 and 44 distribution also as.Perhaps, the casing of this speaker system is a cylinder, is the low frequency passive radiator at the center of circular surface, and a plurality of active loudspeaker units are the center symmetry about described low frequency passive radiator.Perhaps, the quantity of described active loudspeaker unit and described low frequency passive radiator can increase according to demand to some extent.
Claims (6)
1. audio amplifier, comprise an airtight casing, it is characterized in that be equipped with at least 4 initiatively loudspeaker units and 1 low frequency passive radiant section in the same one side side of described audio amplifier, described active loudspeaker unit is symmetrically distributed with respect to stating the low frequency passive radiant section.
2. audio amplifier according to claim 1 is characterized in that, described active loudspeaker unit has identical structure, size, technology and performance characteristics.
3. audio amplifier according to claim 1 is characterized in that, described low frequency passive radiant section comprises at least 1 low frequency passive radiator.
4. audio amplifier according to claim 1 is characterized in that, described active loudspeaker unit is an even number, and about described low frequency passive radiant section axial symmetry, the active loudspeaker unit that is distributed in described low frequency passive radiant section homonymy is same sound channel.
5. audio amplifier according to claim 1 is characterized in that, described active loudspeaker unit is the center symmetry about described low frequency passive radiant section.
6. audio amplifier according to claim 1 is characterized in that, described casing is a cylinder, and the tank surface at described active loudspeaker unit and low frequency passive radiant section place is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020502249XU CN201830435U (en) | 2010-08-24 | 2010-08-24 | Sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020502249XU CN201830435U (en) | 2010-08-24 | 2010-08-24 | Sound box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201830435U true CN201830435U (en) | 2011-05-11 |
Family
ID=43968948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020502249XU Expired - Lifetime CN201830435U (en) | 2010-08-24 | 2010-08-24 | Sound box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201830435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472503B (en) * | 2016-01-14 | 2018-10-30 | 佳禾智能科技股份有限公司 | A kind of passive radiator speaker |
-
2010
- 2010-08-24 CN CN201020502249XU patent/CN201830435U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472503B (en) * | 2016-01-14 | 2018-10-30 | 佳禾智能科技股份有限公司 | A kind of passive radiator speaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |