CN207075084U - Loudspeaker enclosure - Google Patents

Abstract

The utility model provides a kind of loudspeaker enclosure,Including lower cover,The loudspeaker monomer to form the upper lid of receiving space and be contained in the receiving space is assembled with lower cover,The loudspeaker monomer includes the vibrating diaphragm for vibration sounding,The operatic tunes before the vibrating diaphragm is formed with the upper lid interval setting,The upper lid, which is additionally provided with, connects the preceding operatic tunes and extraneous passage of speaking,The preceding operatic tunes collectively forms the ante-chamber of the loudspeaker enclosure with the passage of speaking,The position of the corresponding ante-chamber of upper lid is provided with the through hole through upper lid,The direction that the upper lid is directed away from vibrating diaphragm on the surface of the vibrating diaphragm is recessed to form groove,The groove connects with the through hole,The loudspeaker enclosure also includes side and the elastic cover plate of the covering through hole and groove for being fixed on the close vibrating diaphragm of the upper lid,The elastic cover plate is used to absorb the vibration under particular resonant frequency,The Young's modulus or intensity of the elastic cover plate are less than the Young's modulus or intensity of the upper lid.

Description

Loudspeaker enclosure

【Technical field】

Acoustic-electric field is the utility model is related to, more particularly to a kind of loudspeaker enclosure for applying to portable type electronic product.

【Background technology】

With the arrival in mobile Internet epoch, 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.At present, the function of mobile phone is extremely various, and 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 correlation technique includes housing, the loudspeaker monomer being contained in the housing, through described The through hole that housing is set and the cover plate for being covered on the through hole, the loudspeaker monomer include the vibrating diaphragm for vibration sounding, institute State vibrating diaphragm to be arranged at intervals to form the preceding operatic tunes with the housing, the through hole is set with the vibrating diaphragm face, and the loudspeaker enclosure is also Including the passage of speaking that the preceding operatic tunes is in communication with the outside, the preceding operatic tunes collectively forms described raise one's voice with the passage of speaking The ante-chamber of device case.

However, in the loudspeaker enclosure of correlation technique, the inwall of the ante-chamber is hard plastic or metal material shape Into rigid walls, the damping of rigid walls is small and Oscillation Amplitude is small, and emittance is limited, can not effectively pass the cavity energy of ante-chamber Broadcast is gone, thus can not absorb the energy of assigned frequency.Therefore, the structure easily cause the ante-chamber rigid walls produce resonate into And cause the sounding distortion of the loudspeaker enclosure, influence the acoustical behavior of the loudspeaker enclosure.

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

【Utility model content】

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

In order to achieve the above object, the utility model provides a kind of loudspeaker enclosure, including lower cover, with lower cover assembles to be formed The upper lid of receiving space and the loudspeaker monomer being contained in the receiving space, the loudspeaker monomer include being used to vibrate The vibrating diaphragm of sounding, the operatic tunes before the vibrating diaphragm is formed with the upper lid interval setting, the upper lid are additionally provided with the connection preceding operatic tunes With the passage of speaking in the external world, the preceding operatic tunes collectively forms the ante-chamber of the loudspeaker enclosure, the upper lid with the passage of speaking The position of the corresponding ante-chamber is provided with the through hole through upper lid, and the upper lid is directed away from vibrating diaphragm on the surface of the vibrating diaphragm Direction be recessed to form groove, the groove connects with the through hole, the loudspeaker enclosure also include be fixed on the upper lid Close to the side of the vibrating diaphragm and the elastic cover plate of the covering through hole and groove, the elastic cover plate is used to absorb particular resonance Vibration under frequency, the Young's modulus or intensity of the elastic cover plate are less than the Young's modulus or intensity of the upper lid.

Preferably, the groove is set with the vibrating diaphragm face, and the elastic cover plate covers the groove.

Preferably, gap is provided between the elastic cover plate and the upper lid, the groove forms the gap.

Preferably, the elastic cover plate is formed with the upper lid by double-shot moulding or hot pressing or stickup or ultrasonic bonding It is fixedly connected.

Preferably, the elastic cover plate absorbs the vibration that resonant frequency is 500~15000Hz.

Preferably, the elastic cover plate absorbs the vibration that resonant frequency is 3000~9000Hz.

Preferably, the elastic cover plate is made up of TPU or MCP or silica gel.It is of the present utility model to raise compared with correlation technique Sound device case will set Young's modulus or intensity to be less than the Young's modulus of the housing or the elastic cover plate of intensity in the ante-chamber, use In absorbing the vibration under particular resonant frequency, so as to weaken the resonance effect of the loudspeaker enclosure and reduce its distortion, and then Improve the acoustical behavior of the loudspeaker enclosure.

【Brief description of the drawings】

, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings Other accompanying drawings are obtained, wherein：

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

Fig. 2 is the cut-away view of the line A-A along Fig. 1；

Fig. 3 be the utility model loudspeaker enclosure elastic cover plate and correlation technique rigid walls frequency response curve figure；

Fig. 4 be the utility model loudspeaker enclosure elastic cover plate and correlation technique rigid walls total harmonic distortion curve Figure.

【Embodiment】

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The all other embodiment obtained, belong to the scope of the utility model protection.

Please refer to Fig. 1-2, wherein, Fig. 1 is the dimensional structure diagram of the utility model loudspeaker enclosure；Fig. 2 is edge The cut-away view of line A-A in Fig. 1.The utility model provides a kind of loudspeaker enclosure 100, including housing 1, loudspeaker monomer 2, through hole 3rd, speak passage 4 and elastic cover plate 5.

The loudspeaker monomer 2 is contained in the housing 1.In present embodiment, the housing 1 include lower cover 11, with The lower cover 11 surrounds the upper lid 12 of receiving space 13 jointly.The loudspeaker monomer 2 is fixed in the receiving space 13.

The loudspeaker monomer 2 includes the vibrating diaphragm 21 for vibration sounding, and the vibrating diaphragm 21 is arranged at intervals with the housing 1 The operatic tunes 6 before formation.Specifically, the vibrating diaphragm 21 surrounds the preceding operatic tunes 6 jointly with the upper lid 12.

The through hole 3 sets through the housing 1 and connected with the preceding operatic tunes 6.In present embodiment, the through hole 3 Set through the upper lid 12.More excellent, the through hole 3 is set with the face of vibrating diaphragm 21.

The passage 4 of speaking is formed in the housing 1, specifically, the passage 4 of speaking is formed at the upper lid 12. The preceding operatic tunes 6 is in communication with the outside by the passage 4 of speaking, for forming side vocal structure.That is, present embodiment In, the receiving space 13 is separated into ante-chamber 131 and back cavity 132 by the vibrating diaphragm 21 (loudspeaker monomer 2), wherein, institute Stating ante-chamber 131 includes the preceding operatic tunes 6 and the passage 4 of speaking, and for speaking, the back cavity 132 is used to improve described raise one's voice The frequency acoustic performance of device case 100.

That is, the position that described through hole 3 corresponds to the ante-chamber 131 on the housing 1 is set, and it runs through the housing 1 And the ante-chamber 131 is in communication with the outside.

The elastic cover plate 5 is located at the ante-chamber 131 and is fixed on the close side of vibrating diaphragm 21 of the housing 1 and covers The through hole 3 is covered, for absorbing the vibration of particular resonant frequency.The Young's modulus or intensity of the elastic cover plate 5 are less than described The Young's modulus or intensity of housing 1 (more excellent is the upper lid 12).

Rigid walls in correlation technique are replaced by the elastic cover plate 5 in the utility model, and the elastic cover plate 5 In the presence of a resonant frequency, by design, when the resonant frequency of the elastic cover plate is adjusted into a certain frequency, in resonant frequency Near, the elastic cover plate 5 can produce stronger vibration, in 100 sounding of loudspeaker enclosure, when sounding monomer 2 vibrates, make Air compression in ante-chamber produces energy, and energy driving elastic cover plate 5 vibrates, so as to consume the energy in ante-chamber, elastomeric cap Plate 5 preferably vibrates at the resonant frequency fx, and now oscillation intensity reaches maximum, so as to consume more energy；And then Absorb the purpose of energy near specific frequency；Can be by the ante-chamber 131 in addition, substituting rigid walls by the elastic cover plate 5 Medium density is passed to outside the ante-chamber 131, and then is reduced the covibration of the loudspeaker enclosure 100 and improved distortion.

It is designed especially by material, area, shape and thickness to the elastic cover plate 5 to realize above-mentioned purpose. In present embodiment, the elastic cover plate 5 is made using the relatively low material of Young's modulus or intensity, at least below the upper lid 12 Young's modulus or intensity, for example be made using by TPU or MCP or silica gel.Pass through double-shot moulding or hot pressing or stickup or super again Sound wave welding forms a fixed connection, and forms the part-structure of ante-chamber 131, and the ante-chamber 131 for absorbing the loudspeaker enclosure 100 is humorous The energy to shake near peak, reach reduce resonance peak, improve distortion, improve the loudspeaker enclosure 100 acoustical behavior purpose.Bullet The resonant frequency range that property cover plate 5 can absorb as needed is designed adjustment.Specific resonant frequency is the needs set The resonant frequency range of absorption.

Referring to Fig. 3, the frequency response curve of the rigid walls of elastic cover plate and correlation technique for the utility model loudspeaker enclosure Figure.As seen from Figure 3, in the frequency response curve of the elastic cover plate 5 of the utility model loudspeaker enclosure 100, resonance peak substantially drops It is low, you can to reduce covibration.

Referring to Fig. 4, total harmonic wave of the rigid walls of elastic cover plate and correlation technique for the utility model loudspeaker enclosure loses True curve map.From fig. 4, it can be seen that in the total harmonic distortion curve of the elastic cover plate 5 of the utility model loudspeaker enclosure 100, lose True spike substantially reduces, you can improves distortion.

In loudspeaker enclosure 100 of the present utility model, it is shaking for 500~15000Hz that the elastic cover plate 5, which absorbs resonant frequency, It is dynamic：

When the resonant frequency of the elastic cover plate 5 is 500~1500Hz, the low frequency that can reduce the loudspeaker enclosure 100 is humorous 3 distortions near 2 distortions, and f0/3 near distortion, corresponding f0/2 near vibration frequency f0 etc.；

When the resonant frequency of the elastic cover plate 5 is 1500~3000Hz, the 2000Hz of the loudspeaker enclosure 100 can be reduced 3 distortions near neighbouring intermediate frequency distortion, corresponding 1000Hz 2 distortions, and 667Hz nearby etc.；

When the resonant frequency of the elastic cover plate 5 is 3000~9000Hz, the harmonic high frequency of the loudspeaker enclosure 100 can be reduced Shake the distortion near peak Fh, 3 distortions near corresponding Fh/2 2 distortions, and Fh/3 nearby etc.；

When the resonant frequency of the elastic cover plate 5 is 9000~15000Hz, the high frequency of the loudspeaker enclosure 100 can be reduced 3 distortions near distortion, corresponding 6000Hz 2 distortions, and 4000Hz nearby near 12000Hz etc..

Referring to Fig. 4, the acoustical behavior test data frequency response curve figure of the utility model loudspeaker enclosure.With reference to implementation data And for effect, more excellent in present embodiment, the elastic cover plate 5 absorbs the vibration that resonant frequency is 3000~9000Hz, Now the reduction distortion effect of the loudspeaker enclosure 100 is more preferable.

In present embodiment, the elastic cover plate 5 is fixed on the upper lid 12 and set with the face of vibrating diaphragm 21.Specifically , the upper lid 12 of the elastic cover plate 5 and the housing 1 passes through double-shot moulding or hot pressing or stickup or ultrasonic bonding shape Into being fixedly connected.Certainly, the two fixed form is not limited to this.

In order that the through hole 3 can stablize leakage acoustic pressure, set between the upper lid 12 of the elastic cover plate 5 and the housing 1 There is gap, form pressure release space.

Such as be directed away from the upper lid 12 surface relative with the vibrating diaphragm 21 vibrating diaphragm 21 direction be recessed to be formed it is recessed Groove 7, the groove 7 connect with the through hole 3, the elastic cover plate 5 be fixed on the upper lid 12 towards the surface of vibrating diaphragm 21 and Cover the groove 7.Preferably, groove 7 can be set with the face of vibrating diaphragm 21.The groove 7 forms the interstitial structure.

It should be noted that the setting of the elastic cover plate 5 is to absorb the particular resonant frequency energy of the ante-chamber 131 Amount, therefore, the elastic cover plate 5 are not limited to the said structure and set, and position is also not necessarily limited to aforesaid way.It may be alternatively located at institute State and speak in passage 4.

Compared with correlation technique, loudspeaker enclosure of the present utility model will set Young's modulus or intensity to be less than in the ante-chamber The Young's modulus of the housing or the elastic cover plate of intensity, it is described so as to weaken for absorbing the vibration under particular resonant frequency The resonance effect of loudspeaker enclosure and its distortion is reduced, and then improve the acoustical behavior of the loudspeaker enclosure.

Above-described is only embodiment of the present utility model, it should be noted here that the ordinary skill for this area For personnel, on the premise of not departing from the utility model and creating design, improvement can also be made, but these belong to this practicality New protection domain.

Claims (7)

1. a kind of loudspeaker enclosure, including lower cover and lower cover assemble the upper lid to form receiving space and are contained in the collecting sky Interior loudspeaker monomer, the loudspeaker monomer include the vibrating diaphragm for vibration sounding, the vibrating diaphragm and the upper lid interval The operatic tunes before being formed is set, the upper lid, which is additionally provided with, connects the preceding operatic tunes and extraneous passage of speaking, the preceding operatic tunes with it is described Passage of speaking collectively forms the ante-chamber of the loudspeaker enclosure, it is characterised in that the position of the upper corresponding ante-chamber of lid is provided with Through the through hole of upper lid, the direction that the upper lid is directed away from vibrating diaphragm on the surface of the vibrating diaphragm is recessed to form groove, institute State groove to connect with the through hole, the loudspeaker enclosure also includes being fixed on the side of the close vibrating diaphragm of the upper lid and covered The elastic cover plate of the through hole and groove is covered, the elastic cover plate is used to absorb the vibration under particular resonant frequency, the elasticity The Young's modulus or intensity of cover plate are less than the Young's modulus or intensity of the upper lid.

2. loudspeaker enclosure according to claim 1, it is characterised in that the groove is set with the vibrating diaphragm face, described Elastic cover plate covers the groove.

3. loudspeaker enclosure according to claim 2, it is characterised in that between being provided between the elastic cover plate and the upper lid Gap, the groove form the gap.

4. loudspeaker enclosure according to claim 3, it is characterised in that the elastic cover plate passes through double-colored note with the upper lid Modeling or hot pressing or stickup or ultrasonic bonding form a fixed connection.

5. loudspeaker enclosure according to claim 1, it is characterised in that the elastic cover plate absorb resonant frequency be 500~ 15000Hz vibration.

6. loudspeaker enclosure according to claim 5, it is characterised in that the elastic cover plate absorb resonant frequency be 3000~ 9000Hz vibration.

7. loudspeaker enclosure according to claim 6, it is characterised in that the elastic cover plate is TPU or MCP or silica gel system Into.