CN205754838U - Use the acoustic construction of passive diaphragm element - Google Patents
Use the acoustic construction of passive diaphragm element Download PDFInfo
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- CN205754838U CN205754838U CN201620453086.8U CN201620453086U CN205754838U CN 205754838 U CN205754838 U CN 205754838U CN 201620453086 U CN201620453086 U CN 201620453086U CN 205754838 U CN205754838 U CN 205754838U
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- diaphragm element
- passive diaphragm
- passive
- loudspeaker unit
- acoustic construction
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Abstract
This utility model provides a kind of acoustic construction using passive diaphragm element, including: casing, loudspeaker unit and at least one passive diaphragm element；Described casing has and described loudspeaker unit and the hole of passive diaphragm element airtight connection, and cavity one air spring of composition in described passive diaphragm element and casing, its resonant frequency is less than the resonant frequency of loudspeaker unit；Cavity in described casing forms the ratio long-pending with effective sound pelvic surface of sacrum of loudspeaker unit of effective resonator area sum of at least one passive diaphragm element described in the cavity of loudspeaker unit and passive diaphragm element more than or equal to 3.This utility model provides a kind of acoustic construction using passive diaphragm element, passive diaphragm element is made to form the emission source of an independent low frequency radiation ripple, thus the LF-response scope of loudspeaker unit is expanded by passive diaphragm element so that the sensitivity in low-frequency range of the whole acoustic construction is greatly enhanced.
Description
Technical field
This utility model relates to a kind of acoustic construction, particularly relates to a kind of acoustics using passive diaphragm element and ties
Structure.
Background technology
In traditional acoustic construction design, commonly used phase-reversing tube or passive diaphragm element are by speaker list
Superpose with positive phase wave after the low frequency radiation wave reflection at the unit back side, thus improve low-frequency effect.It can be seen that
In this structure, either phase-reversing tube or passive its purpose of diaphragm element are all to be produced by loudspeaker unit itself
Low frequency radiation wave reflection output.Therefore, the frequency of the low frequency radiation ripple of its output is to be determined by loudspeaker unit
Fixed.If loudspeaker unit is the most poor in the sensitivity of low frequency end, then the low frequency that audio amplifier is overall
Effect also will not be outstanding.Therefore, low-frequency effect overall in order to improve audio amplifier in traditional design, need to strengthen
The size of loudspeaker unit, in order to coordinate the size of loudspeaker unit, the box volume of audio amplifier is also required to carry out
Accordingly increase.Therefore, low-frequency effect improvement brings the increase of audio amplifier volume and weight increases the two result.
And along with modern's household simplicity, and the light-weighted demand of mobile device, traditional large volume is heavy weight
Audio amplifier has been no longer desirable in the parlor of modern and mobile device using
Utility model content
Technical problem underlying to be solved in the utility model is to provide a kind of acoustics using passive diaphragm element
Structure, makes passive diaphragm element form the emission source of an independent low frequency radiation ripple, thus by passively shaking
Film unit expands the LF-response scope of loudspeaker unit so that the spirit in low-frequency range of the whole acoustic construction
Sensitivity is greatly enhanced.
In order to solve above-mentioned technical problem, this utility model provides a kind of sound using passive diaphragm element
Learn structure, including: casing, loudspeaker unit and at least one passive diaphragm element；
Described casing has and described loudspeaker unit and the hole of passive diaphragm element airtight connection, described quilt
Cavity one air spring of composition in dynamic diaphragm element and casing, its resonant frequency is less than loudspeaker unit
Resonant frequency；This air spring is promoted to carry out resonance in its resonant frequency by loudspeaker unit；
The effectively vibration area of described passive diaphragm element accounts for tank surface is long-pending more than 30%；The table of described casing
After area refers to casing is equivalent to spheroid, the surface area of spheroid.
In a preferred embodiment: the effectively vibration area of described passive diaphragm element accounts for what tank surface was amassed
35%.
In a preferred embodiment: the effectively vibration area of described passive diaphragm element accounts for what tank surface was amassed
40%.
In a preferred embodiment: effective resonator area sum of at least one passive diaphragm element described with raise
The ratio that effective sound pelvic surface of sacrum of sound device unit amasss is more than or equal to 3.
In a preferred embodiment: effective resonator area sum of at least one passive diaphragm element described with raise
The ratio that effective sound pelvic surface of sacrum of sound device unit amasss is more than or equal to 4.
In a preferred embodiment: effective resonator area sum of at least one passive diaphragm element described with raise
The ratio that effective sound pelvic surface of sacrum of sound device unit amasss is more than or equal to 6, and is less than or equal to 8.
In a preferred embodiment: described casing is gengon, towards described cavity between its face and face
Side has rib.
In a preferred embodiment: described rib in the vertical direction be projected as circular arc.
In a preferred embodiment: also include trousers；Described trousers is arranged in described cavity, and with
Described passive diaphragm element one_to_one corresponding and being coaxially disposed；Described trousers is provided with one at its axle center and is communicated to
The through hole of passive diaphragm element, passive diaphragm element is isolated by remainder with described cavity.
In a preferred embodiment: also include trousers；Described trousers is with described passive diaphragm element one by one
Correspondence, and it is wrapped in outward the surface of described passive diaphragm element；Described trousers is communicated with in symmetrical position
Cavity and the pod apertures of passive diaphragm element.
Compared to prior art, the technical solution of the utility model possesses following beneficial effect:
1. a kind of acoustic construction using passive diaphragm element that this utility model provides, breaches use in the past
Passive diaphragm element substitutes the thinking of paraphase structure.By the resonant frequency of passive diaphragm element independent of audio amplifier
This is the most theoretical for box volume, increases effective resonator area of passive diaphragm element and passive diaphragm element
Weight so that the resonance point of the air spring of passive diaphragm element and casing composition is reduced to loudspeaker unit
Resonance point below.Driven air spring at its resonant frequency resonance by loudspeaker unit, widen audio amplifier
Hz-KHz so that whole acoustic construction is greatly reinforced at the response sensitivity of low frequency end.Further, due to
The sensitivity of low frequency end is strengthened by passive diaphragm element, and for loudspeaker unit, it has only to possesses
Preferably intermediate frequency and the sensitivity of high frequency, and this air spring can be promoted to carry out the thrust of resonance,
Therefore the size of loudspeaker unit can be accomplished smaller；Cost ratio is relatively low, and the volume of casing the most just can phase
Should do little.
2. a kind of acoustic construction using passive diaphragm element that this utility model provides, due to passive vibrating diaphragm list
The resonator area of unit is very big, easily causes the situation that resonance is uneven.For this shortcoming, be provided with passively
The trousers that diaphragm element is coaxial.Passive diaphragm element is separated by the periphery of trousers with cavity, trousers
Axle center at be provided with a through hole, air-flow in cavity through this through hole rectification rear drive passive diaphragm element resonance,
Owing to trousers and passive diaphragm element are coaxially disposed, therefore from trousers air-flow out for passively
For diaphragm element, the pressure of air-flow and distribution all ratios are more uniform, effectively prevent passive diaphragm element and vibrate not
Uniform situation.
3. a kind of acoustic construction using passive diaphragm element that this utility model provides, due to passive vibrating diaphragm list
The resonator area of unit is bigger, therefore occurs the biggest Oscillation Amplitude to produce without passive diaphragm element
Well bass, is also no need for being made the thickest by the thickness of cavity.Therefore be especially suitable for use panel computer,
On the first-class product highstrung for product thickness of TV, mobile phone.
4. a kind of acoustic construction using passive diaphragm element that this utility model provides, passive owing to employing
Diaphragm element expands the low frequency Hz-KHz of loudspeaker unit, and loudspeaker unit has only to produce and promotes air bullet
Spring carries out the motive force of resonance, it is therefore not necessary to use the most large-sized loudspeaker unit.Just compare appearance
Easily being designed as passive loudspeaker box, the tonequality of audio amplifier promotes further.And the thickness of passive loudspeaker box can be further
Reduce.
5. a kind of acoustic construction using passive diaphragm element that this utility model provides, is gengon at casing
Time, between the face dough-making powder of casing, it is provided with rib, by rib, the relative position in two faces is fixed.
So that the cavity volume of casing is fixed, during the use of audio amplifier, owing to the volume of casing is not
Becoming, thus without producing acoustic loss, and sound coloration is also greatly suppressed.
Accompanying drawing explanation
Fig. 1 is the stereoscopic figure of this utility model preferred embodiment 1；
Fig. 2 is the generalized section of this utility model preferred embodiment 1；
Fig. 3 is the passive vibrating diaphragm audio amplifier of tradition and the frequency response curve comparison diagram of this utility model preferred embodiment 1；
Fig. 4 is the stereoscopic figure of this utility model preferred embodiment 3；
Fig. 5 is the generalized section of this utility model preferred embodiment 3；
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, utility model is described further.
Embodiment 1
Reference Fig. 1-2, a kind of acoustic construction using passive diaphragm element, including: casing 1, speaker list
Unit 2 and two passive diaphragm element 3；The wherein passive vibrating diaphragm that size is 22 cun of passive diaphragm element 3
Unit, the size of loudspeaker unit 1.5 cun；Effective resonator area of the passive diaphragm element of said two 3 it
With the ratio long-pending with effective sound pelvic surface of sacrum of loudspeaker unit is about 3.5.
Described casing 1 has and described loudspeaker unit 2 and the hole of passive diaphragm element 3 airtight connection,
In the present embodiment, described casing 1 is cylindrical, and loudspeaker unit 2 is installed on the bottom surface of casing 1, two
Passive diaphragm element 3 is positioned at the side of casing 1.
Cavity 11 in described passive diaphragm element 3 and casing forms an air spring, and its resonant frequency is low
Resonant frequency in loudspeaker unit 2.In order to allow the resonant frequency of air spring be reduced to loudspeaker unit 2
Resonant frequency under, strengthen passive diaphragm element 3 surface area in the case of, it is also possible to strengthen in the lump
The quality of passive diaphragm element so that it is resonant frequency reduce further.
This air spring is enough promoted to carry out the motive force of resonance owing to loudspeaker unit 2 has only to produce, because of
To the motive force of loudspeaker unit 2, this, require that ratio is relatively low, it is not necessary to use the biggest loudspeaker unit.Right
For the size of passive diaphragm element 3, the size of loudspeaker unit 2 is the least.On whole casing the most greatly
The surface area of part is all by occupied by passive diaphragm element.In the present embodiment, the surface of passive diaphragm element 3
Long-pending account for that tank surface is long-pending 30%, if selecting bigger passive diaphragm element 3, this ratio can increase further
Greatly, such as 35%, 40%, 45%, 60%..This occupies casing major part table with tradition speaker of voice box unit 2
The design of area is the most entirely different.
With further reference to Fig. 3, wherein the curve of light color is the frequency response curve of the passive vibrating diaphragm audio amplifier of tradition, described two
The ratio that effective resonator area sum of individual passive diaphragm element 3 and effective sound pelvic surface of sacrum of loudspeaker unit amass is not
To 2；And the curve of dark color is the frequency response curve of audio amplifier in the present embodiment.
It can be seen that when close to 300Hz, the frequency response curve of two casings occurs in that cross point from figure,
Starting to extend toward low frequency direction from this point, the sensitivity of the passive vibrating diaphragm audio amplifier of tradition declines very fast, at 90Hz
Time, the sensitivity difference of two casings reaches maximum and is about 7db, and this has been a difference the biggest.
Further, traditional passive vibrating diaphragm audio amplifier occurs in that flex point, sensitivity dramatic decrease when about 75Hz；Also
That is, less than the low frequency of 70Hz, the sensitivity of traditional passive vibrating diaphragm audio amplifier is the lowest, low audio
The most extremely limited.And the audio amplifier of the present embodiment has just welcome flex point, undoubtedly in low-frequency range when arriving 60Hz
Possesses more preferable effect.
And along with the size of passive diaphragm element 3 increases further, by increasing the weight of passive diaphragm element 3 further
Weight, it is also possible to reduce further the resonant frequency of air spring, thus reach more preferable low-frequency effect.
The present embodiment does not repeats them here, it is only necessary to making corresponding adjustment according to said structure can realize.
In the present embodiment, also include trousers 4；Described trousers 4 is arranged in described cavity 11, and with
Described passive diaphragm element 3 one_to_one corresponding and being coaxially disposed；Described trousers 4 is provided with one even at its axle center
Passing to the through hole 41 of passive diaphragm element 3, passive diaphragm element 3 is isolated by remainder with described cavity 11.
Owing to the resonator area of passive diaphragm element 3 is very big, easily cause the situation that resonance is uneven.For this
Individual shortcoming, is provided with the trousers 4 coaxial with passive diaphragm element 3.The periphery of trousers 4 is by passive vibrating diaphragm
Unit 3 separates with cavity 11, and the air-flow in cavity 11 can only be passive through this through hole 41 rectification rear drive
There is resonance in diaphragm element 3, owing to trousers 4 and passive diaphragm element 3 are coaxially disposed, therefore from
The through hole 41 of trousers 4 air-flow out for passive diaphragm element 3 pressure of air-flow and distribution all than
More uniform, effectively prevent passive diaphragm element 3 and vibrate uneven situation.
Additionally, due to employ passive diaphragm element 3 to expand the low frequency Hz-KHz of loudspeaker unit 2, because of
This, it is not necessary to use the most large-sized loudspeaker unit 2.Just it is easier to be designed as passive loudspeaker box, the sound of audio amplifier
Matter promotes further.And the thickness of passive loudspeaker box can reduce further.
In the present embodiment, effective resonator area sum of the passive diaphragm element of said two 3 and loudspeaker unit
The long-pending ratio of effective sound pelvic surface of sacrum be about 3.5.Actually its ratio can increase further, and such as 4,6,8
Deng.Along with the increase of ratio, the effect that its low frequency the improves utility model that heals shows.
Embodiment 2
The present embodiment is with the difference of embodiment 1: in the present embodiment, and casing is gengon, its face and face
Between towards the side of described cavity, there is rib.Described rib in the vertical direction be projected as circular arc.
By rib, the relative position in two faces is fixed.So that the cavity volume of casing is fixed,
During the use of audio amplifier, owing to the volume of casing is constant, thus without producing acoustic loss, and sound dye
Color is also greatly suppressed.
Embodiment 3
With reference to Fig. 4-5, the present embodiment is with the difference of embodiment 1: provide a kind of super in the present embodiment
Thin audio amplifier.Owing to the resonator area of passive diaphragm element 3 is bigger, therefore without passive diaphragm element 3
Occur the biggest Oscillation Amplitude can also produce good bass, be also no need for being made very the thickness of cavity 11
Thick such that it is able to the thickness of casing is reduced as far as possible, it is especially suitable for using at panel computer, TV, hands
On the first-class product highstrung for product thickness of machine.
Embodiment 4
The present embodiment is with the difference of embodiment 3: in the present embodiment, and the stream cover that shakes is outer to be wrapped in and described passively shake
The surface of film unit；Described trousers is communicated with cavity and the water conservancy diversion of passive diaphragm element in symmetrical position
Hole.The stream cover that shakes in embodiment 3, it needs with passive diaphragm element at intervals, thus ensures
Air-flow has enough spaces to be diffused after flowing out from through hole, and then drives passive diaphragm element to vibrate.Cause
This thickness needing to occupy a part of cavity, is unfavorable for reducing of tank thickness.After using said structure, gas
The symmetric position of passive diaphragm element is driven from multiple pod apertures by stream simultaneously, it is ensured that passive vibrating diaphragm
It is uniform that unit receives the active force of air-flow, and is separated by with passive diaphragm element without the stream cover that makes to shake
Far.This makes it possible to be done by casing further thin.
The above, only this utility model preferably detailed description of the invention, but protection model of the present utility model
Enclose and be not limited thereto, the technology model that any those familiar with the art discloses at this utility model
In enclosing, the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.Cause
This, protection domain of the present utility model should be as the criterion with scope of the claims.
Claims (10)
1. the acoustic construction using passive diaphragm element, it is characterised in that including: casing, speaker list
Unit and at least one passive diaphragm element；
Described casing has and described loudspeaker unit and the hole of passive diaphragm element airtight connection, described quilt
Cavity one air spring of composition in dynamic diaphragm element and casing, its resonant frequency is less than loudspeaker unit
Resonant frequency；This air spring is promoted to carry out resonance in its resonant frequency by loudspeaker unit；
The effectively vibration area of described passive diaphragm element accounts for tank surface is long-pending more than 30%；The table of described casing
After area refers to casing is equivalent to spheroid, the surface area of spheroid.
A kind of acoustic construction using passive diaphragm element the most according to claim 1, it is characterised in that:
The effectively vibration area of described passive diaphragm element accounts for tank surface is long-pending 35%.
A kind of acoustic construction using passive diaphragm element the most according to claim 1, it is characterised in that:
The effectively vibration area of described passive diaphragm element accounts for tank surface is long-pending 40%.
A kind of acoustic construction using passive diaphragm element the most according to claim 1, it is characterised in that:
Effective resonator area sum of at least one passive diaphragm element described is amassed with effective sound pelvic surface of sacrum of loudspeaker unit
Ratio more than or equal to 3.
A kind of acoustic construction using passive diaphragm element the most according to claim 4, it is characterised in that:
Effective resonator area sum of at least one passive diaphragm element described is amassed with effective sound pelvic surface of sacrum of loudspeaker unit
Ratio more than or equal to 4.
A kind of acoustic construction using passive diaphragm element the most according to claim 4, it is characterised in that:
Effective resonator area sum of at least one passive diaphragm element described is amassed with effective sound pelvic surface of sacrum of loudspeaker unit
Ratio more than or equal to 6, and less than or equal to 8.
A kind of acoustic construction using passive diaphragm element the most according to claim 1, it is characterised in that:
Described casing is gengon, has rib towards the side of described cavity between its face and face.
A kind of acoustic construction using passive diaphragm element the most according to claim 7, it is characterised in that:
Described rib in the vertical direction be projected as circular arc.
9. according to a kind of acoustic construction using passive diaphragm element according to any one of claim 1-8,
It is characterized in that: also include trousers；Described trousers is arranged in described cavity, and passively shakes with described
Film unit one_to_one corresponding and being coaxially disposed；Described trousers is provided with one at its axle center and is communicated to passive vibrating diaphragm list
The through hole of unit, passive diaphragm element is isolated by remainder with described cavity.
10. according to a kind of acoustic construction using passive diaphragm element according to any one of claim 1-8,
It is characterized in that: also include trousers；Described trousers and described passive diaphragm element one_to_one corresponding, and outward
It is wrapped in the surface of described passive diaphragm element；Described trousers is communicated with cavity with passive in symmetrical position
The pod apertures of diaphragm element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620453086.8U CN205754838U (en) | 2016-05-18 | 2016-05-18 | Use the acoustic construction of passive diaphragm element |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620453086.8U CN205754838U (en) | 2016-05-18 | 2016-05-18 | Use the acoustic construction of passive diaphragm element |
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| CN205754838U true CN205754838U (en) | 2016-11-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028213A (en) * | 2016-05-18 | 2016-10-12 | 李世煌 | Acoustic structure using passive vibrating diaphragm unit |
| CN108366321A (en) * | 2018-04-23 | 2018-08-03 | 深圳市沃特沃德股份有限公司 | Intelligent sound box |
| CN109275077A (en) * | 2017-07-17 | 2019-01-25 | 宁波升亚电子有限公司 | Audio device and its loudspeaker unit, bass mould group and manufacturing method and the method for reproducing audio |
| CN110896515A (en) * | 2018-09-12 | 2020-03-20 | 宁波升亚电子有限公司 | Sound effect device and sound effect reproduction method and sound effect listening method thereof |
| CN115175050A (en) * | 2020-12-24 | 2022-10-11 | 美特科技(苏州)有限公司 | Phase inversion tube and phase inversion type sound box using same |
-
2016
- 2016-05-18 CN CN201620453086.8U patent/CN205754838U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028213A (en) * | 2016-05-18 | 2016-10-12 | 李世煌 | Acoustic structure using passive vibrating diaphragm unit |
| CN109275077A (en) * | 2017-07-17 | 2019-01-25 | 宁波升亚电子有限公司 | Audio device and its loudspeaker unit, bass mould group and manufacturing method and the method for reproducing audio |
| CN109275077B (en) * | 2017-07-17 | 2024-06-11 | 宁波升亚电子有限公司 | Sound effect device, loudspeaker unit, bass module, manufacturing method and sound effect reproducing method |
| CN108366321A (en) * | 2018-04-23 | 2018-08-03 | 深圳市沃特沃德股份有限公司 | Intelligent sound box |
| CN110896515A (en) * | 2018-09-12 | 2020-03-20 | 宁波升亚电子有限公司 | Sound effect device and sound effect reproduction method and sound effect listening method thereof |
| CN115175050A (en) * | 2020-12-24 | 2022-10-11 | 美特科技(苏州)有限公司 | Phase inversion tube and phase inversion type sound box using same |
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