CN1764327A - Loudspeaker diaphragm - Google Patents
Loudspeaker diaphragm Download PDFInfo
- Publication number
- CN1764327A CN1764327A CN 200410051941 CN200410051941A CN1764327A CN 1764327 A CN1764327 A CN 1764327A CN 200410051941 CN200410051941 CN 200410051941 CN 200410051941 A CN200410051941 A CN 200410051941A CN 1764327 A CN1764327 A CN 1764327A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- vibrating diaphragm
- voice coil
- loudspeaker
- keel
- 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
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
Abstract
The invention relates to a loudspeaker and its diaphragm to decrease division vibration and distortion and make the vibration of diaphragm track well drive signal and achieve hi-fi playback effect. Wherein, arranging main keel extended outward on joint of diaphragm and voice coil and rider keel on the crossed direction; wherein, the main keel is vertical to out circle of voice coil and the rider keel. This invention increases greatly the wind resistance strength of diaphragm, and improves the synchronism with cheap material.
Description
Technical field
The present invention relates to a kind of loud speaker and vibrating diaphragm thereof, particularly can reduce and cut apart vibrations, reduce distortion, make vibration of diaphragm follow drive signal well, in the hope of the diaphragm of loudspeaker of the replaying effect that reaches high-fidelity.
Background technology
Traditional loud speaker as shown in figure 10, mainly by ring 1, voice coil loudspeaker voice coil 4, vibrating diaphragm 5, magnetic conductive board and conducting magnetic column 6, support 7, centring disk 8, magnetic conductive board 9 and magnet 10 constitutes.When signal code flow through voice coil loudspeaker voice coil 4, voice coil loudspeaker voice coil 4 was taken exercises by the effect of electromagnetic force in magnetic field, and voice coil loudspeaker voice coil 4 links to each other with vibrating diaphragm 5 roots, drove vibrating diaphragm 5 motions, and power is outwards transmitted from vibrating diaphragm 5 roots, acts on the air of its front and back, it is vibrated, thereby sound.The motion of the desirable diaphragm of loudspeaker 5 and the signal of telecommunication be varied to linear relationship, the air vibration before and after it and the signal of telecommunication be varied to linear relationship, the desirable loud speaker signal of telecommunication of resetting without distortion.The loud speaker of reality is because magnetic field is inhomogeneous, the vibration that distorts of centring disk 8 non-linear, vibrating diaphragm 5, and the factor such as non-linear of ring 1 all can cause the nonlinear distortion of playback sound.Coil 4, magnet 10, centring disk 8, the effect of ring 1 in vibration have nothing in common with each other, but its vibration mode still is fairly simple.The situation of vibrating diaphragm 5 is just different, be subjected to the promotion of voice coil loudspeaker voice coil with voice coil loudspeaker voice coil 4 connecting places, this motive force will pass to whole vibrating diaphragm 5, vibrating diaphragm is subjected to the elastic restraint of ring 1 and the elastic restraint of air, conventional loudspeakers vibrating diaphragm 5 can be regarded flexible body as, deformation self takes place in the transmittance process of power, produce resonance, make whole vibration processes become very complicated, distortion is very big.Conventional loudspeakers is many spring vibration systems of a complexity, is difficult to be reduced to equivalent system and calculates.To such an extent as to, still can't calculate it accurately in today of computing technique prosperity like this.
1), vibrating diaphragm is thick films such as homogeneous the existing diaphragm of loudspeaker mainly contains following several:, 2), vibrating diaphragm is for waiting thick film, 3), vibrating diaphragm is the coating composite membrane, 4), vibrating diaphragm is sandwich composite membrane, 5), vibrating diaphragm is band shape reinforcement vibrating diaphragm, 6), vibrating diaphragm is band fold-type rib vibrating diaphragm.For example by National Defense Industry Press publish, Wang Yizhen writes, and " front page of practical loudspeaker techniques handbook one book (in April, 2003) has just been pointed out the problem of existing loud speaker for the 62nd page to 71 pages.For different frequencies, vibrating diaphragm can produce ring-type or radially cut apart vibration.Except cutting apart the vibration of this stable state, transient response worsens more.The power of being come by the voice coil loudspeaker voice coil transmission causes the vibrating diaphragm distortion, and the elastic force that deformation produces is outwards propagated gradually, when this transmission still imperfect tense signals reverse will cancel out each other.Therefore, the radially deformation of the minimizing diaphragm of loudspeaker becomes particularly important.1), the thickening vibrating diaphragm can increase the quality of vibrating body, increases inertia, desensitization traditional way major defect is:.2), sandwich composite membrane increases manufacturing cost, increases the quality of vibrating body, transient response is bad.3), the anti-twist deformability of coating composite membrane is limited, it is limited in one's ability to cut apart vibration suppression.4), the anti-twist deformability of ripple (fold) type reinforcement (rib) vibrating diaphragm is limited, it is limited in one's ability to cut apart vibration suppression, the ripple type reinforcement is usually done circlewise, can suppress radial (radially) and cut apart vibration, can not suppress ring-type and cut apart vibration, reduced the intensity of vibration force direction of transfer, it is more serious to make ring-type cut apart vibration on the contrary, if adopt radial (radially) to be provided with, then can suppress ring-type and cut apart vibration, can not suppress radial (radially) and cut apart vibration, reduced vertical with the vibration force direction of transfer to intensity, make that radially to cut apart vibration more serious, if ripple (fold) type reinforcement (rib) is set on orthogonal both direction, then can produce the class ring vibration on the both direction, produce the little resonance of many complexity, make audio distortions.5), than certain effect is arranged, but cost is high to the rigid mass of improving vibrating diaphragm for high-strength material such as carbon fiber bar.
Traditional scheme has certain effect to improving loud speaker tonequality, but all keeps away the defective of unavoidable " film " formula vibration.The major defect of " film " formula vibration is that its vibration can not be followed signal well, and as eardrum, drumstick impacts (drive signal), and vibrophone is (asynchronous with drive signal) for a long time, resonance arranged, distortion.
Figure 10 is a kind of profile of conventional loudspeakers, and Figure 11-1, Figure 11-2, Figure 11-3, Figure 11 the-the 4th, voice coil loudspeaker voice coil be vibrating diaphragm distortion (stable state) schematic diagram when top offset; Vibrating diaphragm distortion (dynamically) schematic diagram when Figure 12-1～Figure 12-6 is depicted as the voice coil loudspeaker voice coil up-down vibration, in shown in Figure 12-5, a is opposite with b two parts vibration phase, the acoustic energy that is sent is cancelled out each other, to some frequency, form the resonance shown in Figure 12-6 on the vibrating diaphragm, acoustical energy losses is bigger, and Here it is causes the abominable main cause of loud speaker intermediate frequency characteristics.
Summary of the invention
Problem at the existence of conventional loudspeakers vibrating diaphragm, the invention provides a kind of novel diaphragm of loudspeaker, its can reduce effectively vibrating diaphragm radially with hoop deformation, under the drive signal effect, do the vibration of mass motion rather than " film " formula, its motion can be followed drive signal preferably, reaches the purpose that reduces distortion, the high tone quality of raising the efficiency, reset.
The present invention realizes that the technical scheme of above-mentioned purpose is: the diaphragm of loudspeaker is provided with main joist and false keel, and the main joist direction setting that stretches out from the diaphragm of loudspeaker and voice coil loudspeaker voice coil junction is provided with false keel on the direction of intersecting with it.
The main joist of vibrating diaphragm of the present invention is vertical with the cylindrical of voice coil loudspeaker voice coil, and false keel is vertical with main joist.
Major-minor keel of the present invention are arranged on the back side or the front of vibrating diaphragm.
Major-minor keel of the present invention are arranged on the same one side of vibrating diaphragm or are separately positioned on the two sides of vibrating diaphragm.
Major-minor keel of the present invention are hollow or solid.
The shape of vibrating diaphragm of the present invention is taper, ball top shape, ellipse or plane.
The direction that the main joist of vibrating diaphragm of the present invention is provided with is identical with the voice coil loudspeaker voice coil normal direction.
Angle between the major-minor keel of the present invention is 60 °～120 °.
Loud speaker of the present invention contains the diaphragm of loudspeaker of being with the major-minor keel, and its root is connected with voice coil loudspeaker voice coil; It also is provided with a magnetic circuit simultaneously.
Loud speaker of the present invention also includes ring, magnetic conductive board and conducting magnetic column, and support, centring disk, magnetic conductive board and magnet, ring are connected in vibrating diaphragm and support outer end, and support links to each other with magnet through magnetic conductive board; Conducting magnetic column is positioned at the core of magnet.
The present invention is compared with prior art owing to adopted keel structure, improved the anti-twist intensity of vibrating diaphragm greatly, particularly can reduce and cut apart vibrations, reduce distortion, raise the efficiency, improve the rigid mass ratio of vibrating diaphragm, make vibration of diaphragm follow drive signal well, follow the synchronism that the signal of telecommunication vibrates thereby improved vibrating diaphragm, just can produce the good loud speaker of tonequality, reach the replaying effect of high-fidelity with not too expensive material.
Description of drawings
Fig. 1 is the section of structure of loud speaker specific embodiment of the present invention.
Fig. 2 is the upward view of vibrating diaphragm among Fig. 1.
Fig. 3 is the front elevation view of vibrating diaphragm among Fig. 1.
Fig. 4 is the B-B ' profile of vibrating diaphragm among Fig. 2;
Fig. 5-1, Fig. 5-2, Fig. 5-the 3rd, the schematic diagram of other embodiment that revises by the A-A ' profile of embodiment of the invention Fig. 3.Keel cross section different can be hollow, also can be solid.
Fig. 6 is another embodiment that revises by the A-A ' profile of embodiment of the invention Fig. 3.Main joist and false keel are located at the two sides of vibrating diaphragm respectively.
Fig. 7 ' and Fig. 7 are the assembling process schematic diagrames of keel.
Fig. 8 ' and Fig. 8 are the assembling process schematic diagrames of another kind of keel.
Fig. 9 is a kind of embodiment schematic diagram of revising by the embodiment of the invention.
Figure 10 is the structural representation of conventional loudspeakers.
Figure 11-1～Figure 11-the 4th, conventional loudspeakers vibrating diaphragm displacement deformation schematic diagram.
Figure 12-1～Figure 12-the 6th, the schematic diagram of conventional loudspeakers vibrating diaphragm vibration deformation.
Embodiment
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
For the ease of understanding, before describing specific embodiment, earlier structure of the present invention is carried out simple an introduction.See Fig. 1, be depicted as a kind of loud speaker, include ring 1, voice coil loudspeaker voice coil 4, vibrating diaphragm 5, magnetic conductive board and conducting magnetic column 6, support 7, centring disk 8, magnetic conductive board 9 and magnet 10 etc., ring 1 is connected in vibrating diaphragm 5 and support 7 outer ends, and support 7 links to each other with magnet 10 through magnetic conductive board 9, the root of vibrating diaphragm 5 and voice coil loudspeaker voice coil 4 join, and conducting magnetic column 6 is positioned at the core of magnet 10.
As Fig. 2, Fig. 3 and shown in Figure 4, vibrating diaphragm 5 is provided with main joist 3 and false keel 2, main joist 3 direction (radially) setting that stretches out from the diaphragm of loudspeaker 5 and voice coil loudspeaker voice coil 4 junctions is being provided with false keel 2 on the direction of vertical (intersecting) with it, the main joist 3 of vibrating diaphragm 5 is vertical with the cylindrical of voice coil loudspeaker voice coil 4.The vibration force of voice coil loudspeaker voice coil 5 is along main joist 3 direction transmission, because the existence of main joist 3, the deformation of vibrating diaphragm 5 on the vibration force direction of transfer is very little; Same, because the existence of false keel 2, the deformation of vibrating diaphragm 5 on its circumferencial direction is also very little; It is little to cut apart vibration, and the medium-high frequency section is because the acoustical energy losses that vibrating diaphragm resonance causes reduces, and distortion is little, and frequency response is greatly improved.Because the existence of false keel 2 and main joist 3, rigidity and strength ratio tradition vibrating diaphragm improve greatly, and vibrating diaphragm can be done more frivolously than conventional loudspeakers vibrating diaphragm, and bulk strength is higher.
Main joist evenly and effectively passes to vibrating diaphragm 5 with the vibration of voice coil loudspeaker voice coil, has greatly reduced the radially deformation of vibrating diaphragm, and false keel has then been strengthened the intensity of vibrating diaphragm other direction, reduces subregion resonance, and vibrating diaphragm integrally is synchronized with the movement with voice coil loudspeaker voice coil.
Shown in Fig. 7 ', one diaphragm is pressed into the taper basin-like body of groove anyhow, with another diaphragm be pressed into can with the taper basin-like body (being similar to traditional vibrating diaphragm) of above-mentioned diaphragm taper surface driving fit, between two-layer diaphragm, apply glue, and bond together, as Fig. 7, just form keel vibrating diaphragm as shown in Figure 3.
Another kind method is that the keel shown in Fig. 8 ' are bonded on the taper basin-like body (being similar to traditional vibrating diaphragm), forms structure as shown in Figure 8.
Also can adopt one-time formed method, be pressed into the vibrating diaphragm that has keel.
Be another embodiment that revises by the A-A ' profile of embodiment of the invention Fig. 3 as shown in Figure 6, its main joist and false keel are separately positioned on the two sides of vibrating diaphragm.
As shown in Figure 9, can also directly be pressed into vibrating diaphragm with the diaphragm of band keel.
The present invention can also adopt keel in one direction, adopts the ripple type reinforcement on another direction.
Can regard rigid body approx as when the diaphragm of loudspeaker, speaker vibration system just can be simplified, and result of calculation can be comparatively near truth.The notion of " film " will weaken, and it is comparatively accurate loud speaker " vibrating diaphragm " should to be called loud speaker " vibrating body ".Select a kind of light weight, the material structure that intensity is high is the important means that improves the loud speaker quality.
Major-minor keel of the present invention can be located at the back side of vibrating diaphragm, also can be located at the front of vibrating diaphragm; Main joist and false keel can be located at the same one side of vibrating diaphragm, also can be located at the two sides of vibrating diaphragm respectively.Different shape can be made in the cross section of keel, can be hollow also can be solid; The material of keel can be identical with vibrating diaphragm also can be different.The shape of vibrating diaphragm can be taper, ball top shape, ellipse or plane.
The direction that main joist of the present invention is provided with can be identical with the voice coil loudspeaker voice coil normal direction also can different (certain included angle can be arranged), keel can together moulding also can be by pasting or other method install with vibrating diaphragm; Can mutually vertically also can out of plumb between the major-minor keel.The distance of enclosing line interior (the linking to each other with voice coil loudspeaker voice coil) of the length of keel and vibrating diaphragm outer (linking to each other with ring) can equate also can be different, the length of every main joist can equate also can be different, the cross section of every main joist can equate also can be different, and the cross section of same main joist diverse location can equate also can be different.
Claims (10)
1. diaphragm of loudspeaker, it is characterized in that: described vibrating diaphragm (5) is provided with main joist (3) and false keel (2), main joist (3) the direction setting that stretches out from the diaphragm of loudspeaker (5) and voice coil loudspeaker voice coil (4) junction is provided with false keel (2) on the direction of intersecting with it.
2. the diaphragm of loudspeaker according to claim 1 is characterized in that: the main joist (3) of described vibrating diaphragm (5) is vertical with the cylindrical of voice coil loudspeaker voice coil (4), and false keel (2) is vertical with main joist (3).
3. the diaphragm of loudspeaker according to claim 1 and 2 is characterized in that: described major-minor keel (3,2) are arranged on the back side or the front of vibrating diaphragm (5).
4. the diaphragm of loudspeaker according to claim 1 and 2 is characterized in that: described major-minor keel (3,2) are arranged on the same one side of vibrating diaphragm (5) or are separately positioned on the two sides of vibrating diaphragm (5).
5. the diaphragm of loudspeaker according to claim 1 and 2 is characterized in that: described major-minor keel (3,2) are hollow or solid.
6. the diaphragm of loudspeaker according to claim 1 and 2 is characterized in that: the shape of described vibrating diaphragm (5) is taper, ball top shape, ellipse or plane.
7. the diaphragm of loudspeaker according to claim 1 is characterized in that: the direction that the main joist (3) of described vibrating diaphragm (5) is provided with is identical with voice coil loudspeaker voice coil (4) normal direction.
8. the diaphragm of loudspeaker according to claim 1 and 2 is characterized in that: the angle between the described major-minor keel (3,2) is 60 °～120 °.
9. loud speaker, it is characterized in that: described loud speaker contains the claim 1 or the 2 described diaphragms of loudspeaker (5), and the root of this diaphragm of loudspeaker (5) is connected with described voice coil loudspeaker voice coil (4); It also is provided with a magnetic circuit simultaneously.
10. loud speaker according to claim 9, it is characterized in that: described loud speaker also includes ring (1), magnetic conductive board and conducting magnetic column (6), support (7), centring disk (8), magnetic conductive board (9) and magnet (10), ring (1) are connected in vibrating diaphragm (5) and support (7) outer end, and support (7) links to each other with magnet (10) through magnetic conductive board (9); Conducting magnetic column (6) is positioned at the core of magnet (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410051941 CN1764327A (en) | 2004-10-21 | 2004-10-21 | Loudspeaker diaphragm |
| PCT/CN2005/000644 WO2006042448A1 (en) | 2004-10-21 | 2005-05-10 | Loudspeaker diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410051941 CN1764327A (en) | 2004-10-21 | 2004-10-21 | Loudspeaker diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1764327A true CN1764327A (en) | 2006-04-26 |
Family
ID=36202665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410051941 Pending CN1764327A (en) | 2004-10-21 | 2004-10-21 | Loudspeaker diaphragm |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1764327A (en) |
| WO (1) | WO2006042448A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096701A (en) * | 2012-12-25 | 2013-05-08 | 苏州恒听电子有限公司 | Screening can and telephone receiver thereof |
| CN101919269B (en) * | 2008-01-07 | 2014-09-03 | Jvc建伍株式会社 | Speaker and acoustic system |
| CN104883637A (en) * | 2015-04-29 | 2015-09-02 | 朝阳聚声泰（信丰）科技有限公司 | Clip-on type earphone |
| CN107071665A (en) * | 2017-04-28 | 2017-08-18 | 北京欧意智能科技有限公司 | Vibrating diaphragm and comprehensive sounding loudspeaker |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2479941A (en) | 2010-04-30 | 2011-11-02 | Gp Acoustics | Stiffened loudspeaker diaphragm |
| US10244322B2 (en) * | 2016-10-11 | 2019-03-26 | YG Acoustics LLC | Space frame reinforced tweeter dome |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5765096A (en) * | 1980-10-08 | 1982-04-20 | Matsushita Electric Ind Co Ltd | Vibration diaphragm for speaker |
| JPS6027298A (en) * | 1983-07-25 | 1985-02-12 | Sony Corp | Diaphragm of speaker |
| JPS60220699A (en) * | 1984-04-18 | 1985-11-05 | Hitachi Ltd | Loudspeaker |
| CN2596705Y (en) * | 2002-12-13 | 2003-12-31 | 李慧 | Honeycomb imitated integrated formed sound basin |
-
2004
- 2004-10-21 CN CN 200410051941 patent/CN1764327A/en active Pending
-
2005
- 2005-05-10 WO PCT/CN2005/000644 patent/WO2006042448A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101919269B (en) * | 2008-01-07 | 2014-09-03 | Jvc建伍株式会社 | Speaker and acoustic system |
| CN103096701A (en) * | 2012-12-25 | 2013-05-08 | 苏州恒听电子有限公司 | Screening can and telephone receiver thereof |
| CN103096701B (en) * | 2012-12-25 | 2016-05-04 | 苏州恒听电子有限公司 | A kind of screening can and there is the receiver of this screening can |
| CN104883637A (en) * | 2015-04-29 | 2015-09-02 | 朝阳聚声泰（信丰）科技有限公司 | Clip-on type earphone |
| CN107071665A (en) * | 2017-04-28 | 2017-08-18 | 北京欧意智能科技有限公司 | Vibrating diaphragm and comprehensive sounding loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006042448A1 (en) | 2006-04-27 |
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Open date: 20060426 |