CN109391886A - A kind of passive radiator - Google Patents
A kind of passive radiator Download PDFInfo
- Publication number
- CN109391886A CN109391886A CN201811302954.2A CN201811302954A CN109391886A CN 109391886 A CN109391886 A CN 109391886A CN 201811302954 A CN201811302954 A CN 201811302954A CN 109391886 A CN109391886 A CN 109391886A
- Authority
- CN
- China
- Prior art keywords
- passive radiator
- fixed
- vibrating diaphragm
- connecting element
- speaker
- 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.)
- Granted
Links
- 230000005484 gravity Effects 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims 1
- 239000004964 aerogel Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The embodiment of the present application belongs to audio area, is related to a kind of passive radiator applied on loudspeaker.Passive radiator is set in speaker, including vibrating diaphragm and kinematic system, and the kinematic system is symmetrical structure, has central axes, including fixed bracket and connecting element；The fixed bracket is fixed on the speaker, with hollow inside；The vibrating diaphragm is fixed in the connecting element；The connecting element drives vibrating diaphragm to move in the support bracket fastened hollow inside, and the position of centre of gravity of the vibrating diaphragm is overlapped with the central axes of the kinematic system.Technical solution provided by the present application can improve the distortion for leading to acoustic pressure by the asymmetry of the air capacity of ring edge in the prior art discharge.
Description
Technical field
This application involves audio areas, more particularly, to the passive radiator being applied on loudspeaker.
Background technique
Passive radiator, nickname passive radiator, empty cone, passive vibrating diaphragm etc. are all in fact one described in them
Thing, from the appearance it is identical with common bass unit for passive radiator；But inside is seen, its structure but has very very much not
Together.There is no any lead to be connected in above, the back side yet uncommon drive magnet.There was only ring and vibrating diaphragm, in pushing away for air
Under dynamic, vibrating diaphragm can voluntarily be moved without power drives.
An electrically driven (operated) active speaker unit is generally comprised using the speaker of " passive radiator " and one passive single
First (passive radiator).By it in sealed speaker (inside is not connected to directly with atmosphere), with active speaker unit
Vibration, the air inside speaker can also compress therewith or diastole, in this way, the movement of air just will push passive radiator generation
Corresponding vibration, this just makes passive radiator without power supply, can also make a sound and.
Such working principle also allows the speaker for being equipped with passive radiator in one action, can push more
Air, and passive radiator is generally made bigger than horn area, this also enables it possess better bass dive, is exactly this original
Reason allows passive radiator that the bass of speaker can be enhanced, so that small box be allowed to obtain better bass effect.From this point of view, quilt
Dynamic radiator acts on not small really.
Passive radiator in speaker active cell to carrying out passive sounding under the drive of air in cabinet.Passive radiator
It is usually used to adjustment bass, enables the designer to the tone color for adjusting speaker entirety.The frequency of fadings of passive radiator is usual
It is that every octave reduces 18db.It can thus be designed into carrying out at the submerged depth that loudspeaker bass unit is not achieved
Resonance sounding, while it is " disconnected to be not in obvious the audible frequency from the audible frequency of bass unit to passive radiator
Shelves ", to generate a smooth audio curve from high to low.The cone of bass unit and the cone of passive radiator can be same
When outwardly or inwardly movement (this be referred to as " same-phase ") or heterodromous combination.
Ring is not only supported and is kept the movement of vibrating diaphragm as part indispensable in passive radiator, enable vibrating diaphragm
In axial direction free vibration.There are many shapes of ring, currently used to have corrugated ring and semicircle ring type ring.Ring
Scroll edge there is the air of not co-content on field amplitude direction, therefore even if holding power be it is linear, by ring spoke
The sound penetrated is remained on including distorterence term.
As shown in Figure 1, the raised ring 151 in the edge of vibrating diaphragm 150, the ring 151 that the vibrating diaphragm 150 passes through protrusion
It is fixed on its cabinet 152.It is assumed herein that vibrating diaphragm 150 is that equal distance (Xmm) is vibrated forward in linear oscillator backward.When
Vibrating diaphragm 150 forward X mm when, the air capacity of discharge is indicated by U1, and as the X mm backward of vibrating diaphragm 150, and the air capacity of discharge is by U2
It indicates.In this case, as shown, due to raised ring 151 deformation, air capacity U1 and air capacity U2 are mutually different.
Lead to the distortion of acoustic pressure by the asymmetry of the air capacity of edge discharge.
Summary of the invention
The technical problem to be solved in the embodiments of the present application is that improving the air being discharged by ring edge in the prior art
The asymmetry of amount leads to the problem of dtmf distortion DTMF of acoustic pressure.
In order to solve the above-mentioned technical problem, passive radiator described in the present patent application embodiment uses as described below
Technical solution:
A kind of passive radiator, is set in speaker comprising vibrating diaphragm and kinematic system, it is characterised in that:
The kinematic system is symmetrical structure, has central axes, including fixed bracket and connecting element；
The fixed bracket is fixed on the speaker, with hollow inside；
The vibrating diaphragm is fixed in the connecting element；
The connecting element drives vibrating diaphragm to move in the support bracket fastened hollow inside, and the center of gravity position of the vibrating diaphragm
It sets and is overlapped with the central axes of the kinematic system.
Further, the fixed bracket has annular sidewall, and the outer end face of the side wall is fixed on the speaker, institute
Stating fixed bracket further includes track groove, and the inner face of the track groove from the fixed rack side wall is recessed inwardly.
Further, buffer element is housed in the track groove.
Further, the buffer element is made of elastic fluid.
Further, the elastic fluid material is graphene aerogel.
Further, the connecting element has the first boss with the fixed bracket track slot cooperation.
Further, the connecting element also has the second boss of the fixed vibrating diaphragm.
Further, the connecting element also has the groove with the fixed bracket track slot inner wall cooperation, described recessed
Slot is arranged between the first boss and second boss.
Further.The kinematic system can be circle, rectangle, the symmetrical structures such as racetrack.
Further, the fixed bracket has step, is fixed on speaker by step.
Compared with prior art, the embodiment of the present application mainly has following the utility model has the advantages that because of the embodiment of the present application passive radiation
It includes vibrating diaphragm and kinematic system to device, and kinematic system is symmetrical structure, has central axes, including fixed bracket and connection member
Part can drive reciprocating movement of the vibrating diaphragm in operating system, to avoid vibrating diaphragm from generating deformation, so that sound by connecting element
Air capacity in case will not change, and can effectively improve is caused by the asymmetry of the air capacity of ring edge in the prior art discharge
The distortion of acoustic pressure.
Detailed description of the invention
In order to illustrate more clearly of the scheme of the application, embodiment will be stated below needed in attached drawing make one
It is simple to introduce, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present application, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the vibrating diaphragm ring deformation pattern of prior art passive radiator.
Fig. 2 is the main view and cross-sectional view of passive radiator described in the embodiment of the present invention.
Fig. 3 is the explosive view of passive radiator described in the embodiment of the present invention.
Fig. 4 is the section view partial enlarged view of passive radiator described in the embodiment of the present invention.
Fig. 5 is passive radiator motion profile figure described in the embodiment of the present invention.
Fig. 6 is the rigid linear comparison of passive radiator described in the embodiment of the present invention and existing passive radiator structure
Figure.
Appended drawing reference:
100- sound box body, 200- loudspeaker, 300- passive radiator
1- fixes bracket, 2- buffer element, 3- vibrating diaphragm, 4- connector.
11- fixes bracket step, the fixed bracket track slot of 12-, the fixed rack inner wall of 13-
41- connecting element first boss, 42- connecting element groove, 43- connecting element second boss
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction with attached drawing, to the application reality
The technical solution applied in example is clearly and completely described.
Unless otherwise defined, all technical and scientific terms used herein and the skill for belonging to present techniques field
The normally understood meaning of art personnel is identical；It is specific that description is intended merely in the term used in the description of application herein
The purpose of embodiment, it is not intended that in limitation the application；In the description and claims of this application and above-mentioned Detailed description of the invention
Term " includes " and " having " and their any deformation, it is intended that cover and non-exclusive include.The explanation of the application
Book and claims or term " first " in above-mentioned attached drawing, " second " etc. rather than are used for for distinguishing different objects
Particular order is described.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
A kind of novel passive radiator speaker such as Fig. 2 provided by the present invention, including sound box body 100, loudspeaker 200 with
And passive radiator 300, the loudspeaker 200 and passive radiator 300 are set to the front panel of the sound box body 100, raise
Sound device 200 is located above, and passive radiator 300 is located below, and is symmetrical arranged respectively along the central axes X-X of the front panel.
As shown in figure 3, passive radiator 300 comprising vibrating diaphragm 3 and kinematic system.
The kinematic system is symmetrical structure, has central axes, including fixed bracket 1 and connecting element 4；
The fixed bracket 1 is fixed in the sound box body 100, with hollow inside；
The vibrating diaphragm 3 is fixed in the connecting element 4；
The connecting element 4 drives vibrating diaphragm 3 to move in the hollow inside of the fixed bracket 1, and the weight of the vibrating diaphragm 3
Heart position is overlapped with the central axes of the kinematic system.
The fixed bracket 1 is substantially annular in shape, inner hollow, and there is ring to fill side wall, and the outer end face of the side wall is step
11 (Fig. 4), the fixed bracket 1 are embodied directly in sound box body 100 by step 11, do not need other connectors, are easily filled
Match.The one end of fixed bracket 1 far from the step 11 is inner face, and being recessed inwardly along the inner face has track groove 12.
In embodiments of the present invention, fixed bracket 1 is racetrack, i.e. edge is divided into four edges along outer circle circumferential direction
Section, two sections of arcs and two linear compositions.In other embodiments of the present invention, the fixed bracket 1 is mainly along axis side
To symmetrically, do not limited by shape and the number of segment of segmentation, or rectangle, circle etc..Due to being symmetrical arranged, vibrating diaphragm is being moved
Uniform force when dynamic, the variation of air capacity is symmetrical in speaker, thus avoids the distortion of bass.
As shown in figure 4, wherein the passive radiator 300 further comprises buffer element 2.
The shape of the buffer element 2 and the shape of the track groove 12 of the fixed bracket 1 are substantially the same, for being embedded in
In track groove 12 inside the fixed bracket 1, the material of the buffer element 2 is elastic material.
As the preferred embodiment of the embodiment of the present invention, buffer element 2 is graphene aerogel material, graphene aerogel by
The method that nano-cellulose nano microcrystalline (CNC) support is acted on outer carbon source welding is prepared, while having high compression and surpassing
Resilience performance.It can construct the aeroge of low-density, stable structure by the nanometer supporting role of CNC, and CNC and small molecule carbon source
Carbon welding effect enhance active force between rGO, form more continuous, shape-memory properties preferably flexible waveform carbon
Layer structure.Graphene aerogel not only has the compressibility of superelevation, and (99%, the compressible limit of material is equivalent to complete pressure
Contracting) and there is elasticity and fatigue resistance simultaneously (height is not decreased obviously after circulation compression 10000 times)；Of the invention
In other embodiments, the buffer element 2 can select other elastic materials, be set in the present embodiment not to this.
Such as Fig. 3, connecting element 4 is the cirque structure of similar fixed bracket 1, while refering to Fig. 4, the connecting element 4
Section is concave structure, includes first boss 41, groove 42 and second boss 43, and the groove is arranged in the first boss
43 between 41 and second boss.Wherein first boss 41 is wider, thicker, and second boss 43 is relatively narrow, relatively thin.The width of boss 41 and
The width of the track groove 12 of fixed bracket 1 is substantially the same, and for being slidably matched, realizes that first boss can be in the track groove 12
The inner wall 13 of middle movement, fixed bracket 1 is inserted into the groove 42 of connecting element 4, for being slidably matched, guarantees that connecting element 4 exists
It is moved in the track groove 12 of fixed bracket 1 along track groove.
Hollow internal, far from the step 11 the side of fixed bracket 1, the vibrating diaphragm 3 and institute is arranged in the vibrating diaphragm 3
State the fixed setting of connecting element 4.In embodiments of the present invention, the vibrating diaphragm 3 is fixed at the second of the connecting element 4
On boss 43.The vibrating diaphragm shape of passive radiator of the present invention can be any symmetric figures such as round, rectangle, racetrack
Shape.
As shown in figure 5, connecting element 4 along fixed 1 track groove of bracket, 12 moving direction to 100 external vibration of speaker when, band
Dynamic connecting element 4 squeezes buffer element 2, and vibrating diaphragm 3 is made to keep axial direction forward travel；Vibrating diaphragm 3 is along fixed bracket track slot 12
When mobile and horizontal direction is to 100 internal vibration of speaker, drives connecting element 4 to stretch buffer element 2, vibrating diaphragm 3 is made to keep axial side
It draws back movement, due to the passive radiator 300 in the present invention, drives the reciprocating motion of vibrating diaphragm, the air variation of speaker is line
Property, it can effectively improve the distortion for leading to acoustic pressure by the asymmetry of the air capacity of ring edge in the prior art discharge, reference
Fig. 6.
Obviously, embodiments described above is merely a part but not all of the embodiments of the present application, attached
The preferred embodiment of the application is given in figure, but is not intended to limit the scope of the patents of the application.The application can be with many differences
Form realize, on the contrary, purpose of providing these embodiments is keeps the understanding to disclosure of this application more thorough
Comprehensively.Although the application is described in detail with reference to the foregoing embodiments, for coming for those skilled in the art,
Can still modify to technical solution documented by aforementioned each specific embodiment, or to part of technical characteristic into
Row equivalence replacement.All equivalent structures done using present specification and accompanying drawing content, are directly or indirectly used in other
Relevant technical field, similarly within the application scope of patent protection.
Claims (10)
1. a kind of passive radiator, is set in speaker comprising vibrating diaphragm and kinematic system, it is characterised in that:
The kinematic system is symmetrical structure, has central axes, including fixed bracket and connecting element；
The fixed bracket is fixed on the speaker, with hollow inside；
The vibrating diaphragm is fixed in the connecting element；
The connecting element drives vibrating diaphragm to move in the support bracket fastened hollow inside, and the position of centre of gravity of the vibrating diaphragm with
The central axes of the kinematic system are overlapped.
2. passive radiator according to claim 1, it is characterised in that: the fixed bracket has annular sidewall, described
The outer end face of side wall is fixed on the speaker, and being recessed inwardly in the inner face of the fixed rack side wall has track groove.
3. passive radiator according to claim 2, it is characterised in that: buffer element is housed in the track groove.
4. passive radiator according to claim 3, it is characterised in that: the buffer element is made of elastic fluid.
5. passive radiator according to claim 4, it is characterised in that: the elastic fluid material is graphene airsetting
Glue.
6. according to the passive radiator in claim 2, it is characterised in that: the connecting element has and the fixation
The first boss that bracket track slot is slidably matched.
7. passive radiator according to claim 6, it is characterised in that: the connecting element also has the fixed vibrating diaphragm
Second boss.
8. passive radiator according to claim 7, it is characterised in that: the connecting element also has and the fixed branch
The groove that mounted track slot inner wall is slidably matched, the groove are arranged between the first boss and second boss.
9. passive radiator according to claim 1, it is characterised in that: the kinematic system can be circle, and rectangle is run
The symmetrical structures such as channel type.
10. passive radiator according to claim 2, it is characterised in that: the support bracket fastened outer end face is step, is led to
The step is crossed to be fixed on speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302954.2A CN109391886B (en) | 2018-11-02 | 2018-11-02 | Passive radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811302954.2A CN109391886B (en) | 2018-11-02 | 2018-11-02 | Passive radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109391886A true CN109391886A (en) | 2019-02-26 |
| CN109391886B CN109391886B (en) | 2024-04-02 |
Family
ID=65428257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811302954.2A Active CN109391886B (en) | 2018-11-02 | 2018-11-02 | Passive radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109391886B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023179489A1 (en) * | 2022-03-25 | 2023-09-28 | 广州视源电子科技股份有限公司 | Loudspeaker box |
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| Publication number | Publication date |
|---|---|
| CN109391886B (en) | 2024-04-02 |
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