CN207354589U - Loudspeaker enclosure - Google Patents

Abstract

The utility model provides a kind of loudspeaker enclosure, including housing and the sounding monomer being contained in the housing, the sounding monomer includes the vibrating diaphragm for vibration sounding, the vibrating diaphragm is arranged at intervals to form the preceding operatic tunes with the housing, the loudspeaker enclosure, which further includes, 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 that the ante-chamber is corresponded on the housing is equipped with the through hole for running through housing, the loudspeaker enclosure further includes arranged on side of the housing away from the sounding monomer and covers the elastic cover plate of the through hole, the elastic cover plate is used to absorb the vibration under specific frequency, the Young's modulus or intensity of the elastic cover plate are less than the Young's modulus or intensity of the housing.Compared with correlation technique, the loudspeaker distortions of the utility model are small and acoustical behavior is good.

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 electronic product.

【Background technology】

With the arrival in mobile Internet epoch, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile equipment Among, mobile phone is undoubtedly most common, most portable mobile terminal device.At present, 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 correlation technique includes housing, the sounding monomer being contained in the housing, through the shell The through hole that body is set 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 at intervals to form the preceding operatic tunes with the housing, and the through hole is set with the vibrating diaphragm face, and the loudspeaker enclosure further includes Sound passage is led by what the preceding operatic tunes was in communication with the outside, the preceding operatic tunes collectively forms the loudspeaker enclosure with the sound passage of leading Ante-chamber.

However, in the loudspeaker enclosure of correlation technique, the cover board is steel plate, resonant frequency and institute because of the steel plate It is close to state the working frequency range of loudspeaker enclosure, when the loudspeaker enclosure works, the steel plate easily produces resonance, so that institute The frequency response performance reduction of loudspeaker enclosure and distortion are stated, influences 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 good loudspeaker enclosure of small and acoustical behavior the purpose of this utility model is to provide a kind of distortion.

In order to achieve the above object, the utility model provides a kind of loudspeaker enclosure, including housing and is contained in the shell Internal sounding monomer, the sounding monomer include the vibrating diaphragm for vibration sounding, and the vibrating diaphragm is arranged at intervals with the housing The operatic tunes before formation, the loudspeaker enclosure, which further includes, 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, and the position that the ante-chamber is corresponded on the housing is equipped with through housing Through hole, it is characterised in that the loudspeaker enclosure further includes arranged on side of the housing away from the sounding monomer and covers institute The elastic cover plate of through hole is stated, the elastic cover plate is used to absorb the vibration under specific frequency, the Young's modulus of the elastic cover plate Or intensity is less than the Young's modulus or intensity of the housing.

Preferably, the through hole is set with the sounding monomer face.

Preferably, the housing includes surrounding the lower cover and upper cover of receiving space jointly, the elastic cover plate with it is described on Lid is formed a fixed connection by double-shot moulding or hot pressing or stickup or ultrasonic bonding.

Preferably, the housing includes surrounding the lower cover and upper cover of receiving space jointly, the elastic cover plate with it is described on Lid is integrated injection molding.

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 of TPU or MCP or silica gel.

Preferably, the loudspeaker enclosure further includes the adhesive pad in the outside for being attached at the passage of speaking.

Compared with correlation technique, the loudspeaker enclosure of the utility model will be set on the corresponding upper lid of the ante-chamber runs through upper cover Through hole and by setting elastic cover plate to set the through hole lid, the Young's modulus or intensity of the elastic cover plate are less than on described The Young's modulus of lid or the elastic cover plate of intensity, for absorbing the resonant frequency energy of specific frequency, so as to weaken described raise one's voice The resonance effect of device case and its distortion is reduced, and then improve the acoustical behavior of the loudspeaker enclosure.

【Brief 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, drawings in the following description are only some realities of the utility model Example is applied, 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 structure decomposition figure of Fig. 1；

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

Fig. 4 is that the utility model loudspeaker enclosure (using elastic cover plate) and the loudspeaker enclosure of correlation technique (use rigidity Wall) frequency response curve figure；

Fig. 5 is that the utility model loudspeaker enclosure (using elastic cover plate) and the loudspeaker enclosure of correlation technique (use rigidity Wall) total harmonic distortion curve map.

【Embodiment】

The following is a combination of the drawings in the embodiments of the present utility model, and 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 the part of the embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, 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, wherein, Fig. 1 is the dimensional structure diagram of the utility model loudspeaker enclosure；Fig. 2 is Fig. 1 Part isometric structure decomposition figure；Fig. 3 is the cut-away view of the line A-A along Fig. 1.The utility model provides a kind of loudspeaker enclosure 100, including housing (non-label), sounding monomer 3, lead sound passage 4, through hole 5, elastic cover plate 6 and adhesive pad 7.

The housing includes lower cover 1 and upper cover 2, and the upper cover 2 surrounds receiving space 10 jointly with the lower cover 1.It is described Upper cover 2 and the lower cover 1 can be structure as a whole, or Split type structure.

The sounding monomer 3 is fixed and is contained in the receiving space 10.The sounding monomer 3 is spaced with the upper cover 2 Set and enclose to form the preceding operatic tunes 8 jointly；The sounding monomer 3 surrounds back cavity 102 jointly with the upper cover 2 and the lower cover 1.

The sound passage 4 of leading is formed in the receiving space 10, specifically, the sound passage 4 of leading is formed on described Lid 2.The preceding operatic tunes 8 is in communication with the outside by the sound passage 4 of leading, for forming side vocal structure.

That is, in present embodiment, the receiving space 10 is separated into ante-chamber 101 and institute by the sounding monomer 3 Back cavity 102 is stated, wherein, the ante-chamber 101 includes the preceding operatic tunes 8 and leads sound passage 4 with described, for speaking；The back cavity 102 For improving the frequency acoustic performance of the loudspeaker enclosure 100.

The through hole 5 sets through the upper cover 2 and is connected with the preceding operatic tunes 8.In present embodiment, more preferably, institute Through hole 5 is stated to set with 3 face of sounding monomer.

Certainly, the through hole 5 is arranged on the position of the correspondence ante-chamber 101 on the housing.

The elastic cover plate 6 is covered on the through hole 5 and is fixed on the upper cover 2, so that the through hole 5 be sealed completely Lid, for absorbing the energy of particular resonant frequency.

Specifically, the elastic cover plate 6 is embedded at the side of the remote sounding monomer 3 of the upper cover 2.

In present embodiment, the elastic cover plate 6 can pass through double-shot moulding or hot pressing or stickup or super with the upper cover Sound wave welding forms a fixed connection.

Certainly, the elastic cover plate 6 and the upper cover 2 or integrated injection molding, to improve the loudspeaker enclosure 100 Structural stability.

In present embodiment, the Young's modulus or intensity of the elastic cover plate 6 are less than the upper cover 2 or the lower cover 1 Young's modulus or intensity.

Rigid walls in correlation technique are replaced by the elastic cover plate 6 in the utility model, and the elastic cover plate 6 There are a resonant frequency, by design, when the resonant frequency of the elastic cover plate 6 is adjusted to a certain frequency, in resonance frequency Near rate, the elastic cover plate 6 can produce stronger vibration, in 100 sounding of loudspeaker enclosure, when sounding monomer 2 vibrates, Compressing the air in ante-chamber and produce energy, energy driving elastic cover plate 6 vibrates, so that the energy in ante-chamber is consumed, elasticity Cover board 6 preferably vibrates at the resonant frequency fx, and oscillation intensity reaches maximum at this time, so as to consume more energy；And then reach To the purpose for absorbing energy near specific frequency；Can be by the ante-chamber 101 in addition, substituting rigid walls by the elastic cover plate 6 Interior medium density is passed to outside the ante-chamber 101, and then is reduced the covibration of the loudspeaker enclosure 100 and improved and lose Very.

It is designed especially by material, area, shape and thickness to the elastic cover plate 6 to realize above-mentioned purpose. In present embodiment, the elastic cover plate 6 is made using the relatively low material of Young's modulus or intensity, at least below the upper cover 2 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 101, and the ante-chamber 101 for absorbing the loudspeaker enclosure 100 is humorous The energy to shake near peak, achievees the purpose that the acoustical behavior for reducing resonance peak, improving distortion, improving the loudspeaker enclosure 100.Bullet The resonant frequency range that property cover board 6 can absorb as needed is designed adjustment.Specific resonant frequency is the needs set The resonant frequency range of absorption.

Referring to Fig. 4, (used for the utility model loudspeaker enclosure (using elastic cover plate) and the loudspeaker enclosure of correlation technique Rigid walls) frequency response curve figure.From fig. 4, it can be seen that the utility model loudspeaker enclosure 100 is bent with the frequency response of the elastic cover plate 6 In line, resonance peak substantially reduces, you can reduces covibration.

Referring to Fig. 5, (used for the utility model loudspeaker enclosure (using elastic cover plate) and the loudspeaker enclosure of correlation technique Rigid walls) total harmonic distortion curve map.As seen from Figure 5, the utility model loudspeaker enclosure 100 is with the elastic cover plate 6 In total harmonic distortion curve, distortion spike substantially reduces, you can improves distortion.

In the loudspeaker enclosure 100 of the utility model, the resonant frequency of the elastic cover plate 6 is 500~15000Hz：

When the resonant frequency of the elastic cover plate 6 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 6 is 1500~3000Hz, the loudspeaker enclosure 100 can be reduced 3 distortions near 2 distortions, and 667Hz nearby of intermediate frequency distortion, corresponding 1000Hz near 2000Hz etc.；

When the resonant frequency of the elastic cover plate 6 is 3000~9000Hz, the high frequency of the loudspeaker enclosure 100 can be reduced 3 distortions near distortion, corresponding Fh/2 2 distortions, and Fh/3 nearby near resonance peak Fh etc.；

When the resonant frequency of the elastic cover plate 6 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. 5, for experimental data and effect with reference to curve in figure, in present embodiment, more preferably, the bullet The resonant frequency of property cover board 6 is 3000~9000Hz, the distortion in the total harmonic distortion curve of the loudspeaker enclosure 100 at this time Spike reduction is the most obvious, and effect is more preferable.

The adhesive pad 7 is attached at the outboard end for leading sound passage 4, when the loudspeaker enclosure 100 is installed on other fortune During with product, on the one hand the adhesive pad 7 can improve its stabilization by the loudspeaker enclosure 100 with being adhesively fixed with product Property, not on the one hand when the two is collided, play cushioning effect.

It should be noted that the setting of the elastic cover plate 6 is to absorb the particular resonant frequency energy of the ante-chamber 101 Amount, therefore, the elastic cover plate 6 are not limited to above-mentioned position and set, and can also be attached at and lead on 4 corresponding position of sound passage, this All it is feasible.

Compared with correlation technique, the loudspeaker enclosure of the utility model will be set on the corresponding upper lid of the ante-chamber runs through upper cover Through hole and by setting elastic cover plate to set the through hole lid, the Young's modulus or intensity of the elastic cover plate are less than on described The Young's modulus of lid or the elastic cover plate of intensity, for absorbing the resonant frequency energy of specific frequency, so as to weaken described raise one's voice The resonance effect of device case and its distortion is reduced, and then improve the acoustical behavior of the loudspeaker enclosure.

Above-described is only the embodiment of the 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 (8)

1. a kind of loudspeaker enclosure, including housing and the sounding monomer being contained in the housing, the sounding monomer is including being used for The vibrating diaphragm of vibration sounding, the vibrating diaphragm are arranged at intervals to form the preceding operatic tunes with the housing, and the loudspeaker enclosure further includes connection institute The operatic tunes and extraneous passage of speaking, the preceding operatic tunes collectively form the ante-chamber of the loudspeaker enclosure with the passage of speaking before stating, The position that the ante-chamber is corresponded on the housing is equipped with the through hole for running through housing, it is characterised in that the loudspeaker enclosure further includes Arranged on side of the housing away from the sounding monomer and the elastic cover plate of the through hole is covered, the elastic cover plate is used to inhale The vibration under specific frequency is received, the Young's modulus or intensity of the elastic cover plate are less than the Young's modulus or intensity of the housing.

2. loudspeaker enclosure according to claim 1, it is characterised in that the through hole is set with the sounding monomer face.

3. loudspeaker enclosure according to claim 2, it is characterised in that the housing includes surrounding under receiving space jointly Lid and upper cover, the elastic cover plate form fixed company with the upper cover by double-shot moulding or hot pressing or stickup or ultrasonic bonding Connect.

4. loudspeaker enclosure according to claim 2, it is characterised in that the housing includes surrounding under receiving space jointly Lid and upper cover, the elastic cover plate are integrated injection molding with the upper cover.

5. according to the loudspeaker enclosure described in claim 1-4 any one, it is characterised in that the elastic cover plate absorbs resonance frequency Rate is the vibration of 500~15000Hz.

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

7. loudspeaker enclosure according to claim 1, it is characterised in that the elastic cover plate is TPU or MCP or silica gel system Into.

8. loudspeaker enclosure according to claim 1, it is characterised in that the loudspeaker enclosure, which further includes, is attached at described speak The adhesive pad in the outside of passage.