CN207612414U

CN207612414U - Loudspeaker enclosure

Info

Publication number: CN207612414U
Application number: CN201721457706.6U
Authority: CN
Inventors: 秦鹏; 魏威; 陈志臣
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2017-11-02
Filing date: 2017-11-02
Publication date: 2018-07-13
Anticipated expiration: 2027-11-02

Abstract

The utility model provides a kind of loudspeaker enclosure, including lower cover, the sounding monomer that with the lower cover surrounds the upper cover of receiving space jointly, be contained in the receiving space and sound-absorbing particle；The sounding monomer includes vibrating diaphragm and is sticked and is fixed on the top dome of the vibrating diaphragm, and the vibrating diaphragm surrounds the preceding operatic tunes jointly with the upper cover, and the sound-absorbing particle is contained in the preceding operatic tunes and is fixed on the top dome.Compared with the relevant technologies, the small and acoustical behavior of loudspeaker enclosure distortion of the utility model is good.

Description

Loudspeaker enclosure

Technical field

The utility model is related to acoustic-electric field more particularly to a kind of loudspeaker enclosures applying to portable electronic product.

Background technology

With the arrival of mobile internet era, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices Among, mobile phone is undoubtedly most common, most portable mobile terminal device.Currently, the function of mobile phone is extremely various, one of them is just It is the music function of high-quality, therefore, the loudspeaker enclosure for playing sound is widely applied Intelligent mobile equipment till now Among.

The loudspeaker enclosure of the side sounding of the relevant technologies includes the sounding monomer that shell is contained in the shell, described Sounding monomer includes the vibrating diaphragm for vibration sounding, and the vibrating diaphragm is arranged to form the preceding operatic tunes with the shell interval, described to raise one's voice Device case further includes leading sound channel by what the preceding operatic tunes was in communication with the outside, and the preceding operatic tunes collectively forms institute with the sound channel of leading State the ante-chamber of loudspeaker enclosure.

However, in the loudspeaker enclosure of the relevant technologies, the inner wall of the ante-chamber of the shell is smooth planar structure, resistance Buddhist nun is smaller, and the loudspeaker enclosure will produce 2 times, 3 inferior distortion spikes due to ante-chamber resonance effect, to cause ante-chamber to go out Distortion and larger high-frequency noise, influence the acoustical behavior and sense of hearing of the loudspeaker enclosure when sound.

Therefore, a kind of new loudspeaker enclosure solution above-mentioned technical problem must be provided by having in fact.

Utility model content

The purpose of this utility model is to provide a kind of good loudspeaker enclosures of the small and acoustical behavior of distortion.

In order to achieve the above object, the utility model provides a kind of loudspeaker enclosure, including lower cover, common with the lower cover Surround the upper cover of receiving space, the sounding monomer that is contained in the receiving space and sound-absorbing particle；The sounding monomer includes It vibrating diaphragm and is sticked and is fixed on the top dome of the vibrating diaphragm, the vibrating diaphragm surrounds the preceding operatic tunes, the sound-absorbing particle jointly with the upper cover It is contained in the preceding operatic tunes and is fixed on the top dome.

Preferably, the sound-absorbing particle is the porous structure of nano-scale particle polymerization.

Preferably, the grain size of the sound-absorbing particle is less than 100 μm.

Preferably, the sound-absorbing particle by glue or tape-stripping in the top dome.

Preferably, the sound-absorbing particle is in array distribution.

Preferably, the loudspeaker enclosure further include be formed in the receiving space lead sound channel, the sound channel of leading will The preceding operatic tunes is in communication with the outside, and ante-chamber is collectively formed with the preceding operatic tunes in the sound channel of leading.

Compared with the relevant technologies, the loudspeaker enclosure of the utility model is glued in the top dome of the vibrating diaphragm sets the sound-absorbing particle simultaneously The sound-absorbing particle is set to be located in the preceding operatic tunes, so that the inner wall coarse of the preceding operatic tunes, passes through the sound-absorbing particle It is sticked and increases the damping of the ante-chamber, to reduce the distortion spike of the loudspeaker enclosure sounding, effectively inhibit sounding height Harmonic distortion and high-frequency noise caused by secondary resonance；The high-frequency harmonic generated outside the top dome is made an uproar the bottom of with simultaneously and is directly inhaled It receives, and then improves the acoustical behavior and sense of hearing of the loudspeaker enclosure.

Description of the drawings

It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Other attached drawings are obtained, wherein：

Fig. 1 is the dimensional structure diagram of the utility model loudspeaker enclosure；

Fig. 2 is the part isometric structural exploded view of the utility model loudspeaker enclosure；

Fig. 3 is the cut-away view of the line A-A along Fig. 1；

Fig. 4 is the frequency response curve of the utility model loudspeaker enclosure and the relevant technologies loudspeaker enclosure；

Fig. 5 is the total harmonic distortion curve graph of the utility model loudspeaker enclosure and the relevant technologies loudspeaker enclosure.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The all other embodiment obtained, shall fall within the protection scope of the present invention.

Please refer to Fig. 1-3, the utility model provides a kind of loudspeaker enclosure 100, including lower cover 1, be covered on it is described The upper cover 2 of lower cover 1, leads sound channel 4 and sound-absorbing particle 5 at sounding monomer 3.

The upper cover 2 surrounds receiving space 10 jointly with the lower cover 1.The upper cover 2 and the lower cover 1 can be integrated knot Structure.

The fixation of sounding monomer 3 is contained in the receiving space 10.The sounding monomer 3 includes being used for vibration sounding Vibrating diaphragm 31 and be sticked and be fixed on the top dome 32 of the vibrating diaphragm 31.

The vibrating diaphragm 31 is arranged with the interval of the upper cover 2 and encloses to form the preceding operatic tunes 6 jointly；The vibrating diaphragm 31 and the upper cover 2 and the lower cover 1 surround back cavity 101 jointly.

The sound channel 4 of leading is formed in the receiving space 10, specifically, the sound channel 4 of leading is formed on described Lid 2.The sound channel 4 of leading can be also an integral molding structure with the upper cover 2.It is described lead sound channel 4 by the preceding operatic tunes 6 with it is outer Boundary is connected to, and is used to form side vocal structure.

That is, in present embodiment, the receiving space 10 is separated into ante-chamber 102 and institute by the sounding monomer 3 State back cavity 101, wherein the ante-chamber 102 includes that the preceding operatic tunes 6 leads sound channel 4 with described, for speaking；The back cavity 101 Frequency acoustic performance for improving the loudspeaker enclosure 100.

The sound-absorbing particle 5 is contained in the preceding operatic tunes 6 and is fixed on the top dome 32.The top dome 32 is in high frequency vibrating When dynamic, since the instantaneous velocity of air-flow is larger and 32 diaphagras etc. of itself of top dome, generates high-frequency harmonic and makes an uproar the bottom of with, These clutters can be resonated by the ante-chamber 102 to be amplified.It, can after bonding one layer of sound-absorbing particle 5 in the top dome 32 The high-frequency harmonic generated outside the top dome 32 and bottom are made an uproar direct absorption, the sound quality of the loudspeaker enclosure 100 can be effectively improved.

The fixed form of the sound-absorbing particle 5 is unlimited, for example is fixed on the top dome by glue 7 (or adhesive tape) stickup. Using glue spraying mode or dispensing mode can be passed through when glue 7.

The setting of the sound-absorbing particle 5 makes the inner wall coarse of the preceding operatic tunes 6, that is, increases the damping of the ante-chamber 102, To reduce the distortion spike of 100 sounding of the loudspeaker enclosure, effectively inhibit harmonic distortion caused by sounding higher order resonances and High-frequency noise, and then improve the acoustical behavior of the loudspeaker enclosure 100.

It should be noted that in present embodiment, the sound-absorbing particle 5 fixes the top dome 32 and is contained in the preceding sound In chamber 6, but itself and it is unlimited be set in the preceding operatic tunes 6, can also be fixedly installed on it is described lead the opposite upper cover 2 in sound channel 4, This is also feasible, and principle is all.

Installation structure, structure need not be additionally arranged in the mode of the above-mentioned fixation sound-absorbing particle 5 in the ante-chamber 102 It is simpler.

The arrangement mode of the sound-absorbing particle 5 is unlimited, can be random distribution, also interchangeable certain regular distribution setting, than The sound-absorbing particle 5 as described in present embodiment is in array distribution.

Specifically, the sound-absorbing particle 5 is the porous structure of nano-scale particle polymerization, which makes the sound-absorbing particle 5 sound-absorbing effect becomes apparent from and acoustic resistance significantly increases, and can effectively inhibit harmonic distortion and height caused by sounding higher order resonances Frequency noise.More preferably, the diameter of the sound-absorbing particle 5 is less than 100 μm, saves the space of the ante-chamber 102.

It should be noted that the polymeric shape of the sound-absorbing particle 5 itself is unlimited, size is effective.

Fig. 4-5 is please referred to, Fig. 4 is the frequency response curve of the utility model loudspeaker enclosure and the relevant technologies loudspeaker enclosure Figure.As seen from Figure 4, in the frequency response curve of the utility model loudspeaker enclosure 100, the resonance peak of the ante-chamber 102 is apparent It reduces, tool improves significantly.

Fig. 5 is the total harmonic distortion curve graph of the utility model loudspeaker enclosure and the relevant technologies loudspeaker enclosure, by can in Fig. 5 See, in the total harmonic distortion curve of the loudspeaker enclosure 100, the ante-chamber 102 is distorted spike and effectively reduces, and has and significantly changes Kind effect.

Compared with the relevant technologies, the loudspeaker enclosure of the utility model, which glues the inner wall of ante-chamber described in the face of the upper cover, to be set The sound-absorbing particle so that the inner wall coarse of the ante-chamber increases the damping of the ante-chamber by being sticked for the sound-absorbing particle, To reduce the distortion spike of the loudspeaker enclosure sounding, harmonic distortion and high frequency caused by sounding higher order resonances are effectively inhibited Noise, and then improve the acoustical behavior and sense of hearing of the loudspeaker enclosure.

Above-described is only the embodiment of the utility model, it should be noted here that for the ordinary skill of this field For personnel, without departing from the concept of the present invention, improvement can also be made, but these belong to this practicality Novel protection domain.

Claims

1. a kind of loudspeaker enclosure, including lower cover and the lower cover surround the upper cover of receiving space and are contained in the receipts jointly Hold the sounding monomer in space, the sounding monomer includes vibrating diaphragm and is sticked and is fixed on the top dome of the vibrating diaphragm, the vibrating diaphragm with The upper cover surrounds the preceding operatic tunes jointly, which is characterized in that the loudspeaker enclosure further includes being contained in the preceding operatic tunes and fixing In the sound-absorbing particle of the top dome.

2. loudspeaker enclosure according to claim 1, which is characterized in that the sound-absorbing particle is the more of nano-scale particle polymerization Pore structure.

3. loudspeaker enclosure according to claim 2, which is characterized in that the grain size of the sound-absorbing particle is less than 100 μm.

4. loudspeaker enclosure according to claim 1, which is characterized in that the sound-absorbing particle by glue or tape-stripping in The top dome.

5. loudspeaker enclosure according to claim 4, which is characterized in that the sound-absorbing particle is in array distribution.

6. loudspeaker enclosure according to claim 1, which is characterized in that the loudspeaker enclosure further includes being formed in the receiving Sound channel is led in space, and the preceding operatic tunes is in communication with the outside by the sound channel of leading, and described leads sound channel and the preceding operatic tunes Ante-chamber is collectively formed.