CN106028233A - Acoustic structure equipped with passive diaphragm units - Google Patents

Acoustic structure equipped with passive diaphragm units Download PDF

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Publication number
CN106028233A
CN106028233A CN201610329824.2A CN201610329824A CN106028233A CN 106028233 A CN106028233 A CN 106028233A CN 201610329824 A CN201610329824 A CN 201610329824A CN 106028233 A CN106028233 A CN 106028233A
Authority
CN
China
Prior art keywords
passive diaphragm
passive
diaphragm
loudspeaker unit
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610329824.2A
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Chinese (zh)
Inventor
李世煌
Original Assignee
李世煌
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 李世煌 filed Critical 李世煌
Priority to CN201610329824.2A priority Critical patent/CN106028233A/en
Publication of CN106028233A publication Critical patent/CN106028233A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807Enclosures comprising vibrating or resonating arrangements
    • H04R1/283Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/029Manufacturing aspects of enclosures transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00Loudspeakers
    • H04R2400/11Aspects regarding the frame of loudspeaker transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04Plane diaphragms

Abstract

The present invention provides an acoustic structure equipped with passive diaphragm units. The acoustic structure comprises a box body, a loudspeaker unit and at least one passive diaphragm unit, wherein the box body is provided with holes which are in closed connection with the loudspeaker unit and the passive diaphragm units, an air spring is formed by the passive diaphragm units and a cavity in the box body, and the resonant frequency of the air spring is lower than that of the loudspeaker unit; and the cavity in the box body forms a cavity of the loudspeaker unit and the passive diaphragm units, and the ratio of the sum of effective resonant areas of the at least one passive diaphragm unit to the effective sound cone area of the loudspeaker unit is more than or equal to 3. According to the acoustic structure using the passive diaphragm units provided by the invention, the passive diaphragm units can form an independent emission source of low-frequency radiation waves so as to ensure that the low-frequency response range of the loudspeaker unit can be expanded through the passive diaphragm units, and thus the sensitivity of the whole acoustic structure in the low-frequency range can be greatly enhanced.

Description

A kind of acoustic construction assembling passive diaphragm element
Technical field
The present invention relates to a kind of acoustic construction, particularly relate to a kind of acoustic construction assembling passive diaphragm element.
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
Summary of the invention
Technical problem underlying to be solved by this invention is to provide a kind of acoustics knot assembling passive diaphragm element Structure, makes passive diaphragm element form the emission source of an independent low frequency radiation ripple, thus by passive vibrating diaphragm Unit expands the LF-response scope of loudspeaker unit so that sensitive in low-frequency range of whole acoustic construction Degree is greatly enhanced.
In order to solve above-mentioned technical problem, the invention provides a kind of acoustics knot assembling passive diaphragm element Structure, including: casing, loudspeaker unit and at least one passive diaphragm element;
Described casing has a hole being connected with described loudspeaker unit and passive diaphragm element, described passively shakes Cavity one air spring of composition in film unit and casing, its resonant frequency is less than the resonance of loudspeaker unit Frequency;
Effective resonator area sum of at least one passive diaphragm element described and effective sound basin of loudspeaker unit The ratio of area 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.
In a preferred embodiment: described passive diaphragm element surface area accounts for more than 30% that tank surface is long-pending, institute State after the surface area of casing refers to casing is equivalent to spheroid, the surface area of spheroid.
In a preferred embodiment: described passive diaphragm element surface area accounts for 35% that tank surface is long-pending.
In a preferred embodiment: described passive diaphragm element surface area accounts for 40% that tank surface is long-pending.
Compared to prior art, technical scheme possesses following beneficial effect:
1. a kind of acoustic construction assembling passive diaphragm element that the present invention provides, breaches and uses passively in the past Diaphragm element substitutes the thinking of paraphase structure.By the resonant frequency of passive diaphragm element independent of sound box This is the most theoretical for volume, increases effective resonator area and the weight of passive diaphragm element of passive diaphragm element Amount so that the resonance point of the air spring of passive diaphragm element and casing composition is reduced to the humorous of loudspeaker unit Shake below a little.Driven air spring at its resonant frequency resonance by loudspeaker unit, widen the frequency response of audio amplifier Scope so that whole acoustic construction is greatly reinforced at the response sensitivity of low frequency end.Further, due to low frequency The sensitivity of 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 do accordingly Little.
2. a kind of acoustic construction assembling passive diaphragm element that the present invention provides, due to passive diaphragm element Resonator area is very big, easily causes the situation that resonance is uneven.For this shortcoming, it is provided with and passive vibrating diaphragm The trousers that unit is coaxial.Passive diaphragm element is separated by the periphery of trousers with cavity, the axle of trousers Being provided with a through hole at the heart, the air-flow in cavity passes through this through hole rectification rear drive passive diaphragm element resonance, by It is coaxially disposed in trousers and passive diaphragm element, therefore from trousers air-flow out for passively shaking For film unit, the pressure of air-flow and distribution all ratios are more uniform, effectively prevent passive diaphragm element vibration inequality Even situation.
3. a kind of acoustic construction assembling passive diaphragm element that the present invention provides, due to passive diaphragm element Resonator area is bigger, therefore occurs the biggest Oscillation Amplitude can also produce very well without passive diaphragm element Bass, be also no need for being made the thickest by the thickness of cavity.Therefore it is especially suitable for using at panel computer, electricity Depending on, the first-class product highstrung for product thickness of mobile phone.
4. a kind of acoustic construction assembling passive diaphragm element that the present invention provides, owing to employing passive vibrating diaphragm Unit expands the low frequency Hz-KHz of loudspeaker unit, and loudspeaker unit has only to produce and promotes air spring to enter The motive force of row resonance, it is therefore not necessary to use the most large-sized loudspeaker unit.Just it is easier to set Being calculated as passive loudspeaker box, the tonequality of audio amplifier promotes further.And the thickness of passive loudspeaker box can reduce further.
5. a kind of acoustic construction assembling passive diaphragm element that the present invention provides, when casing is gengon, Between the face dough-making powder of casing, it is provided with rib, by rib, the relative position in two faces is fixed.From And 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 coloration is also greatly suppressed.
Accompanying drawing explanation
Fig. 1 is the stereoscopic figure of the preferred embodiment of the present invention 1;
Fig. 2 is the generalized section of the preferred embodiment of the present invention 1;
Fig. 3 is the passive vibrating diaphragm audio amplifier of tradition and the frequency response curve comparison diagram of the preferred embodiment of the present invention 1;
Fig. 4 is the stereoscopic figure of the preferred embodiment of the present invention 3;
Fig. 5 is the generalized section of the preferred embodiment of the present invention 3;
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, invention is described further.
Embodiment 1
Reference Fig. 1-2, a kind of acoustic construction assembling 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 improves is the most obvious.
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, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office Being limited to this, any those familiar with the art, can be easily in the technical scope that the invention discloses The change expected or replacement, all should contain within protection scope of the present invention.Therefore, the protection of the present invention Scope should be as the criterion with scope of the claims.

Claims (10)

1. the acoustic construction assembling passive diaphragm element, it is characterised in that including: casing, speaker list Unit and at least one passive diaphragm element;
Described casing has a hole being connected with described loudspeaker unit and passive diaphragm element, described passively shakes Cavity one air spring of composition in film unit and casing, its resonant frequency is less than the resonance of loudspeaker unit Frequency;This air spring is promoted to carry out resonance in its resonant frequency by loudspeaker unit;
Effective resonator area sum of at least one passive diaphragm element described and effective sound basin of loudspeaker unit The ratio of area is more than or equal to 3.
A kind of acoustic construction assembling 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 4.
A kind of acoustic construction assembling 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 6, and less than or equal to 8.
A kind of acoustic construction assembling 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 assembling passive diaphragm element the most according to claim 4, it is characterised in that: Described rib in the vertical direction be projected as circular arc.
6. according to a kind of acoustic construction assembling passive diaphragm element according to any one of claim 1-5, 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.
7. according to a kind of acoustic construction assembling passive diaphragm element according to any one of claim 1-5, 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.
A kind of acoustic construction assembling passive diaphragm element the most according to claim 1, it is characterised in that: Described passive diaphragm element surface area accounts for more than 30% that tank surface is long-pending, and the surface area of described casing refers to case After body is equivalent to spheroid, the surface area of spheroid.
A kind of acoustic construction assembling passive diaphragm element the most according to claim 8, it is characterised in that: Described passive diaphragm element surface area accounts for 35% that tank surface is long-pending.
A kind of acoustic construction assembling passive diaphragm element the most according to claim 9, it is characterised in that: Described passive diaphragm element surface area accounts for 40% that tank surface is long-pending.
CN201610329824.2A 2016-05-18 2016-05-18 Acoustic structure equipped with passive diaphragm units Pending CN106028233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610329824.2A CN106028233A (en) 2016-05-18 2016-05-18 Acoustic structure equipped with passive diaphragm units

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610329824.2A CN106028233A (en) 2016-05-18 2016-05-18 Acoustic structure equipped with passive diaphragm units
PCT/IB2017/052902 WO2017199176A1 (en) 2016-05-18 2017-05-17 An acoustic structure using a passive diaphragm unit

Publications (1)

Publication Number Publication Date
CN106028233A true CN106028233A (en) 2016-10-12

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WO (1) WO2017199176A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109874094A (en) * 2018-12-18 2019-06-11 歌尔股份有限公司 Acoustic apparatus and electronic equipment

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