CN205754839U - There is the acoustic construction of passive diaphragm element - Google Patents

There is the acoustic construction of passive diaphragm element Download PDF

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Publication number
CN205754839U
CN205754839U CN201620453309.0U CN201620453309U CN205754839U CN 205754839 U CN205754839 U CN 205754839U CN 201620453309 U CN201620453309 U CN 201620453309U CN 205754839 U CN205754839 U CN 205754839U
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passive diaphragm
passive
diaphragm
casing
acoustic construction
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CN201620453309.0U
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李世煌
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李世煌
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Abstract

This utility model provides a kind of acoustic construction with passive diaphragm element, including: casing, loudspeaker unit, at least one passive diaphragm element and trousers;Described casing has and described loudspeaker unit and the hole of passive diaphragm element airtight connection, and the cavity in described casing forms loudspeaker unit and the resonator cavity of passive diaphragm element;Described trousers is arranged in described resonator cavity, and with described passive diaphragm element one_to_one corresponding and being coaxially disposed;Described trousers is provided with a through hole being communicated to passive diaphragm element at its axle center, and passive diaphragm element is isolated by remainder with described resonator cavity.This utility model provides a kind of acoustic construction with passive diaphragm element, and the audio frequency radiated wave that passive diaphragm element is subject to is symmetrically, and its vibration also ratio is more uniform.

Description

There is the acoustic construction of passive diaphragm element
Technical field
This utility model relates to a kind of acoustic construction, particularly relates to a kind of acoustics knot with passive diaphragm element 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.Passive for having For the acoustic construction of diaphragm element, the low frequency radiation ripple at the loudspeaker unit back side directly drives passive vibrating diaphragm list Unit's vibration.Owing to passive diaphragm element is set directly at the back side of loudspeaker unit, its whole resonance face is all subject to To the driving of low frequency radiation ripple, therefore easily cause the some discontinuity of each symmetry of resonance face and make The vibration of whole passive diaphragm element is the most uneven.
Utility model content
Technical problem underlying to be solved in the utility model is to provide a kind of acoustics with passive diaphragm element Structure, the audio frequency radiated wave that passive diaphragm element is subject to is symmetrically, and its vibration also ratio is more uniform.
In order to solve above-mentioned technical problem, this utility model provides a kind of sound with passive diaphragm element Learn structure, including: casing, loudspeaker unit, at least one passive diaphragm element and trousers;
Described casing has and described loudspeaker unit and the hole of passive diaphragm element airtight connection, described case Internal cavity forms loudspeaker unit and the resonator cavity of passive diaphragm element;
Described trousers is arranged in described resonator cavity, and with described passive diaphragm element one_to_one corresponding and coaxial Arrange;Described trousers is provided with a through hole being communicated to passive diaphragm element at its axle center, and remainder will Passive diaphragm element is isolated with described resonator cavity.
This utility model additionally provides a kind of acoustic construction with passive diaphragm element, including: casing, raises Sound device unit, at least one passive diaphragm element and trousers;
Described casing has and described loudspeaker unit and the hole of passive diaphragm element airtight connection, described case Internal cavity forms loudspeaker unit and the resonator cavity of passive diaphragm element;
Described trousers and described passive diaphragm element one_to_one corresponding, and it is wrapped in outward described passive diaphragm element Surface;Described trousers is communicated with resonator cavity and the pod apertures of passive diaphragm element in symmetrical position.
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: the effectively vibration area of described passive diaphragm element accounts for tank surface is long-pending 30% Above;After the surface area of described casing 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 tank surface is long-pending 40%
In a preferred embodiment: described rib in the vertical direction be projected as circular arc.
Compared to prior art, the technical solution of the utility model possesses following beneficial effect:
1. a kind of acoustic construction with 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 resonator cavity, rectification Being provided with a through hole at the axle center of cover, the air-flow in resonator cavity is through this through hole passive diaphragm element of rectification rear drive Resonance, owing to trousers and passive diaphragm element are coaxially disposed, therefore from trousers air-flow pair out For passive diaphragm element, the pressure of air-flow and distribution all ratios are more uniform, effectively prevent passive diaphragm element Vibrate uneven situation.
2. a kind of acoustic construction with passive diaphragm element that this utility model provides, shaking, stream cover is outer is wrapped in institute State the surface of passive diaphragm element;Described trousers is communicated with resonator cavity and passive vibrating diaphragm in symmetrical position The pod apertures of unit.The symmetric position of passive diaphragm element is driven from multiple pod apertures by air-flow simultaneously, It is uniform for ensure that passive diaphragm element receives the active force of air-flow, and without making to shake stream cover with passive Diaphragm element is separated by too far.This makes it possible to make casing thin.
3. a kind of acoustic construction with passive diaphragm element that this utility model provides, breaches and had in the past Passive diaphragm element substitutes the thinking of paraphase structure, increases effective resonator area of passive diaphragm element, makes The resonance point obtaining passive diaphragm element reduces.Owing to the resonance point of passive diaphragm element is unrelated with casing, and raise Sound device unit is the most unrelated, and therefore it can widen the Hz-KHz of loudspeaker unit so that whole acoustic construction Response sensitivity at low frequency end is greatly reinforced.
4. a kind of acoustic construction with 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 resonator cavity.Therefore it is especially suitable for using at flat board electricity On the first-class product highstrung for product thickness of brain, TV, mobile phone.
5. a kind of acoustic construction with passive diaphragm element that this utility model provides, passive owing to employing Diaphragm element expands the low frequency Hz-KHz of loudspeaker unit, it is therefore not necessary to use the most large-sized speaker Unit.Just being easier to be designed as passive loudspeaker box, the tonequality of audio amplifier promotes further.And passive loudspeaker box Thickness can reduce further.
6. a kind of acoustic construction with 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 volume of resonant cavity 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 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% etc..This occupies casing major part with tradition speaker of voice box unit 2 The design of surface 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. an acoustic construction with passive diaphragm element, it is characterised in that including: casing, speaker list Unit, at least one passive diaphragm element and trousers;
Described casing has and described loudspeaker unit and the hole of passive diaphragm element airtight connection, described case Internal cavity forms loudspeaker unit and the resonator cavity of passive diaphragm element;
Described trousers is arranged in described resonator cavity, and with described passive diaphragm element one_to_one corresponding and coaxial Arrange;Described trousers is provided with a through hole being communicated to passive diaphragm element at its axle center, and remainder will Passive diaphragm element is isolated with described resonator cavity.
2. an acoustic construction with passive diaphragm element, it is characterised in that including: casing, speaker list Unit, at least one passive diaphragm element and trousers;
Described casing has and described loudspeaker unit and the hole of passive diaphragm element airtight connection, described case Internal cavity forms loudspeaker unit and the resonator cavity of passive diaphragm element;
Described trousers and described passive diaphragm element one_to_one corresponding, and it is wrapped in outward described passive diaphragm element Surface;Described trousers is communicated with resonator cavity and the pod apertures of passive diaphragm element in symmetrical position.
A kind of acoustic construction with passive diaphragm element the most according to claim 1 and 2, its feature It is: effective resonator area sum of at least one passive diaphragm element described and effective sound of loudspeaker unit The ratio that pelvic surface of sacrum amasss is more than or equal to 3.
A kind of acoustic construction with passive diaphragm element the most according to claim 1 and 2, its feature It is: effective resonator area sum of at least one passive diaphragm element described and effective sound of loudspeaker unit The ratio that pelvic surface of sacrum amasss is more than or equal to 4.
A kind of acoustic construction with passive diaphragm element the most according to claim 1 and 2, its feature It is: effective resonator area sum of at least one passive diaphragm element described and effective sound of loudspeaker unit The ratio that pelvic surface of sacrum amasss is more than or equal to 6, and is less than or equal to 8.
A kind of acoustic construction with passive diaphragm element the most according to claim 1 and 2, its feature It is: described casing is gengon, between its face and face, towards the side of described cavity, there is rib.
A kind of acoustic construction with passive diaphragm element the most according to claim 6, it is characterised in that: Described rib in the vertical direction be projected as circular arc.
A kind of acoustic construction with 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 more than 30%;The surface area of described casing After referring to casing is equivalent to spheroid, the surface area of spheroid.
A kind of acoustic construction with 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 with 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%.
CN201620453309.0U 2016-05-18 2016-05-18 There is the acoustic construction of passive diaphragm element Active CN205754839U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106028232A (en) * 2016-05-18 2016-10-12 李世煌 Acoustic structure with passive diaphragm units
CN110753292A (en) * 2019-09-30 2020-02-04 歌尔科技有限公司 Sound generating device, acoustic module provided with same and electronic equipment
CN110753290A (en) * 2019-09-30 2020-02-04 歌尔科技有限公司 Sound generating device, acoustic module provided with same and electronic equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106028232A (en) * 2016-05-18 2016-10-12 李世煌 Acoustic structure with passive diaphragm units
CN110753292A (en) * 2019-09-30 2020-02-04 歌尔科技有限公司 Sound generating device, acoustic module provided with same and electronic equipment
CN110753290A (en) * 2019-09-30 2020-02-04 歌尔科技有限公司 Sound generating device, acoustic module provided with same and electronic equipment
CN110753290B (en) * 2019-09-30 2021-01-08 歌尔科技有限公司 Sound generating device, acoustic module provided with same and electronic equipment

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