Content of the invention
It is an object of the present invention to provide a kind of new solution of water proof type sound-producing device.
According to the first aspect of the invention, there is provided a kind of water proof type sound-producing device.This device includes：Housing, describedIt is provided with cavity in housing and the separate chamber being formed is surrounded by inner casing, be additionally provided with described only for connecting on the housingVertical chamber and the air equalizer opening of space outerpace, are provided with waterproofing elements on described air equalizer opening；Audible device, described soundingEquipment is arranged in described separate chamber, is formed between described audible device and at least one of described inner casing and described housingThe operatic tunes afterwards, is filled with sound-absorbing material in the operatic tunes in the rear, is provided with the described cavity of connection and described rear sound on described inner casingChamber let out acoustic aperture.
Alternatively, described sound-absorbing material is sound-absorbing foam or zeolite.
Alternatively, described inner casing is provided with and multiple described lets out acoustic aperture.
Alternatively, it is provided with multiple described air equalizer openings on the housing.
Alternatively, sender after being additionally provided with described audible device, described acoustic aperture of letting out is arranged on away from after describedThe position of sender.
Alternatively, described air equalizer opening is arranged on the position of the neighbouring described audible device of described housing.
Alternatively, described audible device is removably disposed in described separate chamber.
Alternatively, also include microphone, described microphone is arranged in described cavity.
Alternatively, described audible device is water proof type loudspeaker monomer.
A kind of earphone is provided according to a further aspect in the invention.This earphone includes the described water proof type sounding of present invention offerDevice.
It was found by the inventors of the present invention that in the prior art, water proof type sound-producing device is had to improve low-frequency effectOperatic tunes volume after increase, and the cavity closed causes vibrating diaphragm fragile.Therefore, present invention technical assignment to be realized orTechnical problem to be solved be that those skilled in the art never expect or it is not expected that, therefore the present invention is a kind of newTechnical scheme.
This water proof type sound-producing device is provided with air equalizer opening and lets out acoustic aperture.Air equalizer opening can make separate chamber inner and outerThe air pressure balance in portion space, prevents vibrating diaphragm to be damaged.
Additionally, being filled with sound-absorbing material in the rear operatic tunes and the rear operatic tunes is connected with cavity by letting out acoustic aperture, this structureAcoustic efficiency can be improved with expansion low-frequency.
Additionally, the use of sound-absorbing material can be in the case of operatic tunes space after not increasing, expansion low-frequency performance effectively,Improve acoustic efficiency, comply with the development trend that electronic equipment is lightening, minimize.
Additionally, this water proof type sound-producing device has good waterproof effect.
By the detailed description to the exemplary embodiment of the present invention referring to the drawings, the further feature of the present invention and itsAdvantage will be made apparent from.
Specific embodiment
To describe the various exemplary embodiments of the present invention now with reference to accompanying drawing in detail.It should be noted that：Unless other haveBody illustrates, the positioned opposite, numerical expression of the part otherwise illustrating in these embodiments and step and numerical value do not limit thisThe scope of invention.
Description only actually at least one exemplary embodiment is illustrative below, never as to the present inventionAnd its application or any restriction using.
May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitableWhen in the case of, described technology, method and apparatus should be considered a part for specification.
In all examples with discussion shown here, any occurrence should be construed as merely exemplary, and notIt is as restriction.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang YiIt is defined in individual accompanying drawing, then do not need it is further discussed in subsequent accompanying drawing.
In order at least solve one of above-mentioned technical problem, the present invention provides a kind of water proof type sound-producing device.This device is permissibleIt is, but not limited to, earphone, audio amplifier, wearable device etc..As Figure 1-4, this device includes housing 11 and audible device.?It is provided with cavity 14 in housing 11 and the separate chamber being formed is surrounded by inner casing 17.In view of waterproof requirement, cavity 14 should be formedSealing.Air equalizer opening 13 for connecting separate chamber and space outerpace is additionally provided with housing 11.Air equalizer opening 13Shape and size can be configured according to actual needs.Waterproofing elements 15 are provided with air equalizer opening 13.This water repellent elementPart 15 does not have acoustic performance requirements, but requires the classification of waterproof with more than IPX7.Water can not pass through this waterproofing elements 15, but shouldWaterproofing elements 15 have certain Air permenbility, and gas can pass through this waterproofing elements 15, to play the balance inner and outer portion of separate chamberThe effect of the air pressure of environment.Waterproofing elements 15 can adopt CZCC-NF3100 type waterproof material, and for example, waterproofing elements 15 pass throughThe mode of bonding covers on air equalizer opening 13.Housing 11 has acoustic aperture 12, goes out the pars stridulans of acoustic aperture 12 and audible device,Such as vibrating diaphragm, is oppositely arranged.
Audible device is arranged in separate chamber.Preferably, audible device is water proof type loudspeaker monomer 16, this monomerBy diaphragm oscillations sounding.The operatic tunes after being formed between audible device and at least one of inner casing 17 and housing 11.In the rear operatic tunesInside it is filled with sound-absorbing material.Sound-absorbing material is porous material, sound after can increasing in the case of the space of the operatic tunes after not expandingThe Virtual Space in chamber, thus effectively extend the low-frequency effect of sound-producing device.Optionally, sound-absorbing material be sound-absorbing foam 19 orPerson's zeolite, for example, sound-absorbing material can be filled with the way of using direct filling or by container.Go out acoustic aperture 12 generally to haveThere is larger aperture.In order to reach waterproof effect, it is coated with waterproof membrane 23 on going out acoustic aperture 12, for example, pass through bonding agent by waterproofFilm 23 sticks on housing.This waterproof membrane 23 has the classification of waterproof of more than IPX7, and water and gas all can not pass through.This waterproof membrane23 can passively send voice signal.Be provided with connection cavity 14 and the rear operatic tunes on inner casing 17 lets out acoustic aperture 20.
This water proof type sound-producing device is provided with air equalizer opening 13 and lets out acoustic aperture 20.Air equalizer opening 13 can make separate chamberThe air pressure balance in inner and outer portion space, prevents vibrating diaphragm to be damaged.
Additionally, being filled with sound-absorbing material in the rear operatic tunes, and the rear operatic tunes is connected with cavity 14 by letting out acoustic aperture 20, thisStructure can improve acoustic efficiency with expansion low-frequency.
Additionally, the use of sound-absorbing material can be in the case of operatic tunes space after not increasing, expansion low-frequency performance effectively,Improve acoustic efficiency, comply with the development trend that electronic equipment is lightening, minimize.
Additionally, this water proof type sound-producing device has good waterproof effect.
Fig. 3 and 4 shows an embodiment of the water proof type sound-producing device of the present invention.In this embodiment, housing 11 quiltIt is set to cuboid.Go out acoustic aperture 12 and be arranged on housing 11 along one end of long side direction.For comfortable wearing, outer also going out acoustic aperture 12It is provided with the earplug for the ear that fits.Certainly, the shape of housing 11 can be configured according to actual needs, such as cylindricality,Circular, oval etc..
For the ease of installing and changing, in one example, audible device is removably disposed in separate chamber.For example,It is provided with two fixing muscles 22 in cavity 14, during installation, first audible device is installed in separate chamber, then by inner casing 17It is engaged in the space that fixing muscle 22 is limited with housing 11.
Air equalizer opening 13 can be arranged on bottom surface or side, and its size and dimension can enter according to actual needsRow setting, e.g. rectangle, circle, ellipse etc..For more rapid equilibrium air pressure, in one example, on housing 11It is provided with multiple air equalizer openings 13, multiple air equalizer openings 13 are respectively set on bottom surface and side.Preferably, air pressureBalance pipe 13 is arranged on the position of the neighbouring audible device of housing 11, and the diffusion length of such air-flow is the shortest, can make air-flowRapid diffusion.
In another example, inner casing 17 is provided with multiple let out acoustic aperture 20, this setup can expand furtherExhibition low frequency, improves acoustic efficiency.
In this embodiment, water proof type sound-producing device is also equipped with phonetic function, as shown in Fig. 2 being provided with cavity 14Microphone 21.Air equalizer opening 13 is set on a side.In order to improve pickup effect, microphone 21 is 2 and is setPut on another side relative with air equalizer opening 13, wherein, a microphone 21 is located at the middle part on long side, another positionIn the other end relative with audible device.Certainly, microphone 21 can also be arranged on bottom surface.The quantity of microphone can rootIt is configured according to being actually needed, here does not limit.
Additionally, sender 18 after being additionally provided with audible device.As shown in figure 4, in the structure shown here, let out acoustic aperture 20 and setPut at the position away from rear sender 18, to avoid interfering.Sound-absorbing foam 19 is set in the rear operatic tunes.Attract foam permissibleIt is set to make the signal strength signal intensity of a certain frequency range in the voice signal that rear sender 18 sends to be effectively reduced, it is to avoid this frequency rangeVoice signal enter in microphone 21, thus effectively reducing the generation of echo.
Fig. 5 shows another embodiment of the water proof type sound-producing device of the present invention.In this embodiment, inner casing 17 is by shellIt is divided into separate chamber and cavity 14 inside body 11.The operatic tunes after being formed between sound-producing device and housing 14, is filled with the rear operatic tunesSound-absorbing foam 19.Inner casing is provided with and lets out acoustic aperture 20.Air equalizer opening 13 is arranged on bottom surface or the side of housing 11.This structure can make full use of the space within housing 11.
The present invention also provides a kind of earphone, and this earphone includes the water proof type sound-producing device of present invention offer.
This earphone has that low-frequency effect is good, the good feature of sound effect.
Although being described in detail to some specific embodiments of the present invention by example, the skill of this areaArt personnel it should be understood that example above is merely to illustrate, rather than in order to limit the scope of the present invention.The skill of this areaArt personnel are it should be understood that can modify to above example without departing from the scope and spirit of the present invention.ThisBright scope is defined by the following claims.