CN207869356U - Loudspeaker enclosure - Google Patents

Abstract

The utility model provides a kind of loudspeaker enclosure, includes shell with receiving space, the sounding monomer being contained in the receiving space, is formed in the receiving space and leads sound channel, through-hole, sound absorbing layer and cover film；The sounding monomer includes the vibrating diaphragm for vibration sounding, the vibrating diaphragm is arranged with the shell interval and surrounds the preceding operatic tunes 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, the through-hole is arranged through the shell and is connected to the ante-chamber, the sound absorbing layer is fixed on the shell and covers the through-hole setting, and the cover film fixed cover is set to the separate shell of the sound absorbing layer.Compared with the relevant technologies, the loudspeaker distortions of the utility model are small and acoustical behavior 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 relevant technologies includes shell, is contained in the shell sounding monomer runs through the shell The through-hole of body setting and the cover board for being covered on the through-hole, the sounding monomer includes the vibrating diaphragm for vibration sounding, described to shake Film is arranged to form the preceding operatic tunes with the shell interval, and the loudspeaker enclosure further includes leading sound by what the preceding operatic tunes was in communication with the outside Channel, the preceding operatic tunes and the ante-chamber led sound channel and collectively form the loudspeaker enclosure, the through-hole and the ante-chamber.

However, in the loudspeaker enclosure of the relevant technologies, the inner wall of the ante-chamber is hard plastic or metal material shape 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.Therefore, the structure it is easier that the ante-chamber rigid walls generation resonate into And the sounding of the loudspeaker enclosure is caused to be distorted, influence the acoustical behavior 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 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, include shell with receiving space, The sounding monomer that is contained in the receiving space is formed in leading sound channel, through-hole, sound absorbing layer and cover in the receiving space Epiphragma；The sounding monomer includes the vibrating diaphragm for vibration sounding, and the vibrating diaphragm is arranged with the shell interval and surrounds jointly The preceding operatic tunes is in communication with the outside and ante-chamber, the through-hole is collectively formed with the preceding operatic tunes by the preceding operatic tunes, the sound channel of leading It is arranged through the shell and is connected to the ante-chamber, the sound absorbing layer is fixed on the shell and covers the through-hole setting, The cover film fixed cover is set to the separate shell of the sound absorbing layer.

Preferably, the shell includes lower cover and surrounds the upper cover of the receiving space jointly with the lower cover, described to shake Film and the upper cover interval simultaneously surround the preceding operatic tunes jointly, and the sound channel of leading is formed in the upper cover, and the through-hole runs through The upper cover setting.

Preferably, the through-hole is connected to the preceding operatic tunes and is right against the sounding monomer setting.

Preferably, the sound absorbing layer is fixed on the upper cover by glue stickup.

Preferably, the sound absorbing layer is made of acoustical cotton.

Preferably, the aperture of the through-hole is 5mm.

Preferably, the shell is metal shell or plastic casing.

Preferably, the upper cover includes the main part connect with the lower cover lid and is embedded in the main part and the hair The steel disc that sound monomer is oppositely arranged, the through-hole are arranged through the steel disc.

Preferably, the main part is through offering through portion, the steel disc cover the through portion and with the main body Portion's injection molding is integrated.

Compared with the relevant technologies, the loudspeaker enclosure setting of the utility model runs through the through-hole of the shell and makes described Through-hole is connected to the ante-chamber, and by the way that lid sets the sound absorbing layer and the cover film successively on the through-hole, the through-hole is broken It is broken the rigid resonance condition of the ante-chamber, while the sound absorbing layer has absorption to higher frequency, described in weakening The resonance of ante-chamber reduces medium-high frequency distortion, and then improves the sense of hearing and acoustical behavior of the loudspeaker enclosure, and the cover film is used In increasing acoustic resistance, the ante-chamber gas leakage is prevented, the reliability of the loudspeaker enclosure is protected.

【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 line A-A sectional view along Fig. 1.

【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 shell 1, sounding monomer 2, Lead sound channel 3, through-hole 4, sound absorbing layer 5 and cover film 6.

The sounding monomer 2 is contained in the shell 1.In present embodiment, the shell 1 includes lower cover 11 and institute State the upper cover 12 that lower cover 11 surrounds receiving space 10 jointly.The sounding monomer 2 is fixed in the receiving space 13.

The sounding monomer 2 includes the vibrating diaphragm 21 for vibration sounding, the vibrating diaphragm 21 and the interval of the shell 1 setting shape At the preceding operatic tunes 7.Specifically, the vibrating diaphragm 21 surrounds the preceding operatic tunes 7 jointly with the upper cover 12；The vibrating diaphragm 21 with it is described on Lid 12 and the lower cover 11 surround back cavity 101 jointly.

The sound channel 3 of leading is formed in the receiving space 10 of the shell 1, in present embodiment, specifically, institute It states and leads sound channel 3 and be formed in the upper cover 12.

The preceding operatic tunes 7 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 with the preceding operatic tunes 7 in channel 3.

That is, in present embodiment, the receiving space 10 is separated by the vibrating diaphragm 21 (the sounding monomer 2) The ante-chamber 102 and the back cavity 101.Wherein, the ante-chamber 102 includes that the preceding operatic tunes 7 leads sound channel 3 with described, is used for It speaks；The back cavity 101 is used to improve the frequency acoustic performance of the loudspeaker enclosure 100.

The through-hole 4 is arranged through the shell 1 and is connected to the ante-chamber 102.In present embodiment, the through-hole 4 It is arranged through the upper cover 12.The shell 1, especially the upper cover 12 can be made of hard plastic or steel disc is made.

More preferably, the through-hole 4 is connected to the preceding operatic tunes 7 and is right against the sounding monomer 2 and is arranged.

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.

Further, the upper cover 12 includes covering the main part 120 connect with the lower cover 11 and being embedded in the main body The steel disc 121 that portion 120 is oppositely arranged with the sounding monomer 2, the through-hole 4 are arranged through the steel disc 121.

The main part 120 through offering through portion 122, the steel disc 121 cover the through portion 121 and with it is described 120 injection molding of main part is integrated.

In present embodiment, the aperture of the through-hole 4 is set as 5mm, is certainly not limited to this.The setting of the through-hole 4 destroys The resonance condition of the ante-chamber 102 (the especially preceding operatic tunes 7) rigidity.

The sound absorbing layer 5 is fixed on the shell 1 and covers the setting of the through-hole 4, in present embodiment, the sound absorbing layer 5 are fixed on the steel disc 120 of the upper cover 12, the vibration for absorbing particular resonant frequency, such as medium-high frequency.The sound absorbing layer 5 Young's modulus or intensity are less than the Young's modulus or intensity of the shell 1 (the more excellent steel disc 120 for the upper cover 12).

In present embodiment, the sound absorbing layer 5 is made of acoustical cotton.Certainly, material be not limited to this or it is other Sound-absorbing material, this is all feasible.

The sound absorbing layer 5 is fixed on the upper cover 12 by the stickup of glue 8.In this implementation, more preferably, the sound absorbing layer 5 It is fixed for non-tight between the upper cover 12, i.e., there are air leakages for described 5 periphery of sound absorbing layer.

Rigid walls in the related technology are replaced by the sound absorbing layer 5 in the utility model, and the sound absorbing layer 5 exists One resonant frequency, by design, when the resonant frequency of the sound absorbing layer 5 is adjusted to a certain frequency, near resonant frequency, The sound absorbing layer 5 will produce stronger vibration, can be by (this implementation in the ante-chamber 102 in 100 sounding of loudspeaker enclosure Before being in mode in the operatic tunes 7) the sound absorbing layer 5 resonant frequency near energy pass to outside the ante-chamber 102, to reach The purpose for absorbing energy near assigned frequency reaches the sense of hearing for reducing resonance peak, improving distortion, improving the loudspeaker enclosure 100 With the purpose of acoustical behavior；Medium densityization in the ante-chamber 102 can be passed in addition, substituting rigid walls by the sound absorbing layer 5 To outside the ante-chamber 102, further realizes the covibration for reducing the loudspeaker enclosure 100 and improve distortion.

It specifically can be by being designed the material of the sound absorbing layer 5, area, shape and thickness to realize above-mentioned purpose.

6 fixed cover of the cover film is set to the side far from the shell 1 of the sound absorbing layer 5, and present embodiment is solid Due to the side far from the upper cover 12 of the sound absorbing layer 5.The purpose for increasing acoustic resistance is realized in the setting of the cover film 6, from And the effect of 7 gas leakage leakage sound of the preceding operatic tunes is prevented, improve the reliability of the loudspeaker enclosure 100.

Compared with the relevant technologies, the loudspeaker enclosure setting of the utility model runs through the through-hole of the shell and makes described Through-hole is connected to the ante-chamber, and by the way that lid sets the sound absorbing layer and the cover film successively on the through-hole, the through-hole is broken It is broken the rigid resonance condition of the ante-chamber, while the sound absorbing layer has absorption to higher frequency, described in weakening The resonance of ante-chamber reduces medium-high frequency distortion, and then improves the sense of hearing and acoustical behavior of the loudspeaker enclosure, and the cover film is used In increasing acoustic resistance, the ante-chamber gas leakage is prevented, the reliability of the loudspeaker enclosure is protected.

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 (9)

1. Include shell with receiving space, the sounding monomer being contained in the receiving space and shape 1. a kind of loudspeaker enclosure Sound channel is led in receiving space described in Cheng Yu, the sounding monomer includes the vibrating diaphragm for vibration sounding, the vibrating diaphragm and institute Shell interval is stated to be arranged and surround the preceding operatic tunes jointly, it is described lead sound channel by the preceding operatic tunes be in communication with the outside and with the preceding sound Ante-chamber is collectively formed in chamber, which is characterized in that the loudspeaker enclosure further includes being arranged through the shell and being connected to the ante-chamber Through-hole, be fixed on the shell and cover the through-hole sound absorbing layer and fixed cover be set to the sound absorbing layer far from described The cover film of shell side.
2. 2. loudspeaker enclosure according to claim 1, which is characterized in that the shell includes lower cover and common with the lower cover It surrounds the upper cover of the receiving space, the vibrating diaphragm and the upper cover interval and surrounds the preceding operatic tunes jointly, the sound of leading leads to Road is formed in the upper cover, and the through-hole is arranged through the upper cover.
3. 3. loudspeaker enclosure according to claim 2, which is characterized in that the through-hole is connected to and is right against with the preceding operatic tunes The sounding monomer setting.
4. 4. loudspeaker enclosure according to claim 2, which is characterized in that the sound absorbing layer is fixed on described by glue stickup Upper cover.
5. 5. loudspeaker enclosure according to claim 1, which is characterized in that the sound absorbing layer is made of acoustical cotton.
6. 6. loudspeaker enclosure according to claim 1, which is characterized in that the aperture of the through-hole is 5mm.
7. 7. loudspeaker enclosure according to claim 1, which is characterized in that the shell is metal shell or plastic casing.
8. 8. loudspeaker enclosure according to claim 2, which is characterized in that the upper cover includes the main body connect with the lower cover lid Portion and it is embedded the steel disc being oppositely arranged in the main part and the sounding monomer, the through-hole is through steel disc setting.
9. 9. loudspeaker enclosure according to claim 8, which is characterized in that the main part, which runs through, offers through portion, described Steel disc covers the through portion and is integrated with the main part injection molding.