CN209201314U - Loudspeaker enclosure - Google Patents

Abstract

The utility model provides a kind of loudspeaker enclosure, including with accommodating space shell, sounding monomer and lead sound channel, the sounding monomer includes the vibrating diaphragm for vibration sounding, the shell includes lower cover and assembles the upper cover for surrounding the accommodating space jointly with the lower cover, the vibrating diaphragm and the upper cover interval are arranged and surround the preceding operatic tunes jointly, and the preceding operatic tunes is in communication with the outside and ante-chamber is collectively formed with the preceding operatic tunes by the sound channel of leading；The loudspeaker enclosure further includes being laterally away from the vibrating diaphragm direction close to the vibrating diaphragm one the upper cover and being recessed the container formed, the sound absorbing layer made of sound-absorbing material being contained in the container and to be fixed on the upper cover and the sound absorbing layer is packaged in the steel disc in the container, the steel disc is equipped with the sound-absorption hole through thereon, and the sound-absorption hole is connected to the preceding operatic tunes.Compared with the relevant technologies, the loudspeaker acoustical behavior of the utility model is excellent and sense of hearing is good.

Description

Loudspeaker enclosure

[technical field]

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

[background technique]

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 relevant technologies includes shell and is contained in the intracorporal sounding monomer of the shell, the sounding list Body includes the vibrating diaphragm for vibration sounding, and the vibrating diaphragm and the shell interval are arranged to form the preceding operatic tunes, and the loudspeaker enclosure is also Sound channel is led including what the preceding operatic tunes was in communication with the outside, the preceding operatic tunes and the sound channel of leading collectively form the loudspeaking The ante-chamber of device case.

However, the inner wall of the ante-chamber is hard plastic or metal material shape in the loudspeaker enclosure of the relevant technologies At rigid walls, the damping of rigid walls is small and Oscillation Amplitude is small, and radiation energy is limited, can not effectively pass the cavity energy of ante-chamber Broadcast is gone, thus cannot absorb the energy of assigned frequency, it is easier that the rigid walls of the ante-chamber form resonance peak in medium-high frequency, and The loudspeaker enclosure can generate 2 times, 3 inferior distortion spikes, so that ante-chamber be caused to speak due to ante-chamber resonance effect in distortion When, is distorted bad, influences the acoustical behavior and sense of hearing of the loudspeaker enclosure.

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

[utility model content]

The loudspeaker enclosure that small and acoustical behavior is excellent and sense of hearing is good is distorted the purpose of this utility model is to provide a kind of.

In order to achieve the above object, the utility model provides a kind of loudspeaker enclosure, including with accommodating space shell, It the sounding monomer that is contained in the accommodating space and is formed in the accommodating space and leads sound channel, the sounding monomer Including the vibrating diaphragm for vibration sounding, the shell includes lower cover and assembles with the lower cover and surround the accommodating space jointly Upper cover, the vibrating diaphragm and the upper cover interval are arranged and surround jointly the preceding operatic tunes, it is described lead sound channel will the preceding operatic tunes with outside Simultaneously ante-chamber is collectively formed with the preceding operatic tunes in boundary's connection, and the loudspeaker enclosure further includes by the upper cover close to the vibrating diaphragm one The vibrating diaphragm direction is laterally away to be recessed the container to be formed, the sound-absorbing made of sound-absorbing material being contained in the container It layer and is fixed on the upper cover and the sound absorbing layer is packaged in the steel disc in the container, the steel disc, which is equipped with, runs through it On sound-absorption hole, the sound-absorption hole is connected to the preceding operatic tunes.

Preferably, the upper cover includes the ontology assembled with the lower cover and is fixed on the ontology close to the vibrating diaphragm one The steel plate of side, the ontology are formed through the through-hole being oppositely arranged with the vibrating diaphragm, and the through-hole is completely covered in the steel plate, The sound channel of leading is formed in the upper cover, and the steel plate is laterally away from vibrating diaphragm direction concave shape close to the one of the vibrating diaphragm At the container.

Preferably, the vibrating diaphragm includes top dome portion and the outwardly extending vibration section of periphery by the top dome portion, the suction Sound hole and top dome portion face are arranged.

Preferably, the deep equality of the thickness of the sound absorbing layer and the container.

Preferably, the sound absorbing layer is acoustical cotton.

Preferably, the sound-absorption hole is rounded or rectangular.

Compared with the relevant technologies, the loudspeaker enclosure of the utility model opens up on the housing to be connected to the preceding operatic tunes Through-hole, and the sheet-steel cover is set and forms fixation set on through-hole, while the container is set on the steel plate, in the receipts It is filled out in tank and sets sound absorbing layer, the sound absorbing layer is packaged in the container by setting steel disc；Institute can be improved in steel sheet structure State the high-frequency acoustic performance of loudspeaker enclosure；The sound-absorption hole being oppositely arranged with the vibrating diaphragm is opened up on the steel disc simultaneously, by making The flexible material layer is covered on the sound hole and forms fixation, is absorbed in the ante-chamber by the sound absorbing layer through the sound-absorption hole Higher hamonic wave, slow down the strength of resonance of the preceding operatic tunes, to reduce ante-chamber resonance peak and distortion, and then improve described raise The acoustical behavior and sense of hearing of sound device case are good.

[Detailed description of the invention]

It, below will be to required in embodiment description 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 Obtain other attached drawings, in which:

Fig. 1 is the schematic perspective view 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 line A-A cross-sectional view along Fig. 1；

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

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

[specific embodiment]

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 All other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1-3, the utility model provides a kind of loudspeaker enclosure 100, including shell 1, sounding monomer 2, Lead sound channel 3, through-hole 4, steel plate 5, sound absorbing layer 6 and steel disc 7.

The shell 1 has accommodating space 10.The sounding monomer 2 is contained in the accommodating space 10 of the shell 1 It is interior.

In present embodiment, the shell 1 can be structure as a whole, or separate structure.When it is separate structure When, the shell 1 includes lower cover 11, the upper cover for being covered on the lower cover 11 and surrounding accommodating space 10 jointly with the lower cover 11 12。

The sounding monomer 2 includes the vibrating diaphragm 21 for vibration sounding, the vibrating diaphragm 21 and the shell 1 interval setting shape At the preceding operatic tunes 8.Specifically, the vibrating diaphragm 21 surrounds the preceding operatic tunes 8 with the upper cover 12 jointly；The vibrating diaphragm 21 with it is described on Lid 12 and the lower cover 11 surround back cavity 101 jointly.

The vibrating diaphragm 21 includes top dome portion 211 and the outwardly extending vibration section 212 of periphery by the top dome portion 211.

The sound channel 3 of leading is formed in the accommodating space 10 of the shell 1, described to lead sound in present embodiment Channel 3 is formed in the upper cover 12.

The preceding operatic tunes 8 is in communication with the outside by the sound channel 3 of leading, and is used to form side vocal structure, and described leads sound Ante-chamber 102 is collectively formed in channel 3 and the preceding operatic tunes 8.

That is, the accommodating space 10 is separated into the ante-chamber 102 and institute by the vibrating diaphragm 21 in present embodiment State back cavity 101.Wherein, the ante-chamber 102 leads sound channel 3 with described including the preceding operatic tunes 8, for speaking；The back cavity 101 For improving the frequency acoustic performance of the loudspeaker enclosure 100.

The through-hole 4 is arranged through the shell 1 and is connected to the preceding operatic tunes 8.In present embodiment, the through-hole 4 It is oppositely arranged through the upper cover 12 and with the vibrating diaphragm 21.

More preferably, the through-hole 4 is right against the top dome portion 211 setting of the vibrating diaphragm 21.

Certainly, the through-hole 4 can also be set to the position that sound channel 3 is led described in the correspondence of the upper cover 12, this is also can Capable.

The steel plate 5 is fixed on the shell 1 and the through-hole 4 is completely covered.In present embodiment, the steel plate 5 has Body is fixed on the upper cover 12.That is, the upper cover 12 includes the ontology 121 assembled with the lower cover 11 and is fixed on institute Ontology 121 is stated close to the steel plate 5 of 21 side of vibrating diaphragm, the ontology 121 is formed through opposite with the vibrating diaphragm 21 The through-hole 4 is completely covered in the through-hole 4 being arranged, the steel plate 5.

The upper cover 12 is laterally away from 21 direction of vibrating diaphragm close to the vibrating diaphragm 21 and is recessed the container 51 to be formed. More preferably, the container 51 is laterally away from the 21 direction concave shape of vibrating diaphragm close to the vibrating diaphragm 21 by the steel plate 5 At.In other preferred embodiments of the utility model, upper cover 12 can be with the integrated molding of steel plate 5 and in than the above-mentioned ones Separate structure.

It should be noted that so-called steel plate 5 is not limited to the hardened structure of steel material in the utility model, it is expressed as hard Material matter can also be other metal materials, as long as the Young's modulus that the material Young's modulus is greater than the shell 1 is steel plate. In present embodiment, the steel plate 5 is illustrated for being made of steel.

The sound absorbing layer 6 is contained in the container 51.In present embodiment, the sound absorbing layer 6 is sound-absorbing material It is made, for example is made up of acoustical cotton.The sound absorbing layer 6 is used to destroy the resonance condition of the preceding operatic tunes 8, improves harmonic high frequency Vibration；Simultaneously for absorbing the vibration of particular resonant frequency, such as medium-high frequency reduces high frequency distortion by the principle of RESONANCE ABSORPTION.

By the partial structurtes of the steel plate 5 of the sound absorbing layer 6 replacement in the related technology, and there are one for the sound absorbing layer 6 Resonance frequency, it is described near resonance frequency when the resonance frequency of the sound absorbing layer is adjusted to a certain frequency by design Sound absorbing layer 6 can generate stronger vibration, can be by the sound absorbing layer in the preceding operatic tunes 8 in 100 sounding of loudspeaker enclosure Energy near 6 resonance frequency passes to outside the ante-chamber 102, to achieve the purpose that absorb assigned frequency energy nearby, reaches To reduction resonance peak, improvement distortion, improve the sense of hearing of the loudspeaker enclosure 100 and the purpose of acoustical behavior；In addition, by described Sound absorbing layer 6 substitutes the part-structure of the rigid steel plate 5, medium density in the preceding operatic tunes 8 can be passed to the ante-chamber Outside 102, further realizes the covibration for reducing the loudspeaker enclosure 100 and improve distortion, improve its sense of hearing.

In present embodiment, more preferably, the deep equality of the thickness of the sound absorbing layer 6 and the container 51 can be as far as possible The spatial altitude for guaranteeing the preceding operatic tunes 8 while reducing the thickness of the steel plate 5 guarantees that its acoustical behavior is reliable.

The steel disc 7 is fixed on the steel plate 5 and lid sets the sound absorbing layer 6 completely, so that the sound absorbing layer 6 is packaged in In the container 51.

The steel disc 7 is equipped with the sound-absorption hole 71 through thereon, and the sound-absorption hole 71 is connected to the preceding operatic tunes 8.This implementation In mode, the sound-absorption hole 71 is arranged with 211 face of top dome portion, which makes the effect for improving high-frequency resonant and distortion More preferably.

In present embodiment, the sound-absorption hole 71 includes one, adjustable, as long as can encapsulate the sound absorbing layer 6 makes It does not fall off out from the container 51, its certain quantity is also not necessarily limited to one；In addition, the shape of the sound-absorption hole 71 It is unlimited, such as circle, triangle, rectangular etc., this is all feasible.

Fig. 4-5 is please referred to, the medium-high frequency acoustic resonance of the loudspeaker enclosure 100 can be made to be distorted drop by above structure Low, acoustical behavior is more excellent.

Theoretically the frequency bandwidth of the loudspeaker enclosure 100 is the section 800Hz-10000Hz, and interior frequency response is more flat, to sound Reduction degree it is better, and the loudspeaker enclosure of side vocal structure is since there are preceding cavity configuration, structure feature makes near 4-7kHz There are frequency response resonance peak, as shown in Figure 4 the loudspeaker enclosure 100 of the utility model can more apparent reduction resonance peak so that loudspeaker The sounding of case 100 is more melodious.Again as shown in Figure 5, theoretically it is distorted the smaller the better, this programme can more apparent reduction high frequency distortion Peak.

Compared with the relevant technologies, the loudspeaker enclosure of the utility model opens up on the housing to be connected to the preceding operatic tunes Through-hole, and the sheet-steel cover is set and forms fixation set on through-hole, while the container is set on the steel plate, in the receipts It is filled out in tank and sets sound absorbing layer, the sound absorbing layer is packaged in the container by setting steel disc；Institute can be improved in steel sheet structure State the high-frequency acoustic performance of loudspeaker enclosure；The sound-absorption hole being oppositely arranged with the vibrating diaphragm is opened up on the steel disc simultaneously, by making The flexible material layer is covered on the sound hole and forms fixation, is absorbed in the ante-chamber by the sound absorbing layer through the sound-absorption hole Higher hamonic wave, slow down the strength of resonance of the preceding operatic tunes, to reduce ante-chamber resonance peak and distortion, and then improve described raise The acoustical behavior and sense of hearing of sound device case are good.

Above-described is only the embodiments of the present invention, 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 it is practical Novel protection scope.

Claims (6)

1. a kind of loudspeaker enclosure, including with accommodating space shell, the sounding monomer that is contained in the accommodating space and It is formed in the accommodating space and leads sound channel, the sounding monomer includes the vibrating diaphragm for vibration sounding, the shell packet It includes lower cover and assembles the upper cover for surrounding the accommodating space jointly with the lower cover, the vibrating diaphragm and the upper cover interval are arranged simultaneously The preceding operatic tunes is surrounded jointly, the preceding operatic tunes is in communication with the outside and ante-chamber is collectively formed with the preceding operatic tunes by the sound channel of leading, It is characterized in that, the loudspeaker enclosure further includes that be laterally away from the vibrating diaphragm direction close to the vibrating diaphragm one by the upper cover recessed Fall into the container formed, the sound absorbing layer made of sound-absorbing material that is contained in the container and be fixed on the upper cover and The sound absorbing layer is packaged in the steel disc in the container, the steel disc is equipped with the sound-absorption hole through thereon, the sound-absorption hole It is connected to the preceding operatic tunes.

2. loudspeaker enclosure according to claim 1, which is characterized in that the upper cover includes the ontology assembled with the lower cover Be fixed on the ontology close to the steel plate of the vibrating diaphragm side, the ontology is formed through to be oppositely arranged with the vibrating diaphragm The through-hole is completely covered in through-hole, the steel plate, and the sound channel of leading is formed in the upper cover, and the steel plate is close to the vibrating diaphragm One be laterally away from the vibrating diaphragm direction and be recessed to form the container.

3. loudspeaker enclosure according to claim 2, which is characterized in that the vibrating diaphragm includes top dome portion and by the top dome portion The outwardly extending vibration section of periphery, the sound-absorption hole and top dome portion face are arranged.

4. loudspeaker enclosure according to claim 1, which is characterized in that the depth of the thickness of the sound absorbing layer and the container It spends equal.

5. loudspeaker enclosure according to claim 1, which is characterized in that the sound absorbing layer is acoustical cotton.

6. loudspeaker enclosure according to claim 1, which is characterized in that the sound-absorption hole is rounded or rectangular.