CN2738506Y - Loudspeaker vibrating diaphragm - Google Patents
Loudspeaker vibrating diaphragm Download PDFInfo
- Publication number
- CN2738506Y CN2738506Y CN 200420094318 CN200420094318U CN2738506Y CN 2738506 Y CN2738506 Y CN 2738506Y CN 200420094318 CN200420094318 CN 200420094318 CN 200420094318 U CN200420094318 U CN 200420094318U CN 2738506 Y CN2738506 Y CN 2738506Y
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- China
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- vibrating diaphragm
- keel
- diaphragm
- loudspeaker
- voice coil
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Abstract
The utility model relates to a loudspeaker and a vibrating diaphragm thereof, in particular to a loudspeaker vibrating diaphragm which can reduce segmentation vibration, decrease aberration, make the vibration of the vibrating diaphragm follow actuating signals well and get a playback effect with high fidelity. The vibrating diaphragm is provided with a main keel and an auxiliary keel, and the main keel is installed from the connection between the loudspeaker vibrating diaphragm and a speech coil to the outwards extending direction. The auxiliary keel is installed on the direction of intersecting the main keel. The main keel of the vibrating diaphragm is vertical with the excircle of the speech coil, and the auxiliary keel is vertical with the main keel. Compared with the existing technology, because the utility model adopts the keel structure, the utility model largely improves distortion resistance intensity of the vibrating diaphragm, particularly reduces segmentation vibration, decreases aberration, improves efficiency and the rigidity quality ratio of the vibrating diaphragm, makes the vibration of the vibrating diaphragm follow actuating signals well and consequently improves the vibrating synchronism of the vibrating diaphragm following electrical signals. The loudspeaker with good acoustic fidelity can be produced with not too expensive material and get the playback effect with high fidelity.
Description
Technical field
The utility model relates to a kind of loud speaker and vibrating diaphragm thereof, particularly can reduce and cut apart vibrations, reduces distortion, makes 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 utility model 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 utility model 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 intersection with it.
The main joist of vibrating diaphragm described in the utility model is vertical with the cylindrical of voice coil loudspeaker voice coil, and false keel is vertical with main joist.
Major-minor keel described in the utility model are arranged on the back side or the front of vibrating diaphragm.
Major-minor keel described in the utility model are arranged on the same one side of vibrating diaphragm or are separately positioned on the two sides of vibrating diaphragm.
Major-minor keel described in the utility model are hollow or solid.
The shape of vibrating diaphragm described in the utility model is taper, ball top shape, ellipse or plane.
The direction that the main joist of vibrating diaphragm described in the utility model is provided with is identical with the voice coil loudspeaker voice coil normal direction.
Angle between the major-minor keel described in the utility model is 60 °～120 °.
The utility model 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 utility model.
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 the utility model embodiment 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 the utility model embodiment 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 utility model embodiment.
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 in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
For the ease of understanding, before describing specific embodiment, earlier structure of the present utility model 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 the utility model embodiment 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 utility model 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 utility model 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 utility model 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 (8)
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 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420094318 CN2738506Y (en) | 2004-10-21 | 2004-10-21 | Loudspeaker vibrating diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420094318 CN2738506Y (en) | 2004-10-21 | 2004-10-21 | Loudspeaker vibrating diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2738506Y true CN2738506Y (en) | 2005-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420094318 Expired - Lifetime CN2738506Y (en) | 2004-10-21 | 2004-10-21 | Loudspeaker vibrating diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2738506Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101534462A (en) * | 2008-03-10 | 2009-09-16 | 罗伯特·博世有限公司 | Offset baffles for acoustic signal arrival synchronization |
| CN102170603A (en) * | 2011-05-20 | 2011-08-31 | 深圳麦博电器有限公司 | Mechanical frequency division diaphragm and manufacturing method thereof |
| CN1812639B (en) * | 2005-12-05 | 2011-11-23 | 程光 | Pre-stress vibrating diaphragm |
| CN102474685A (en) * | 2009-07-23 | 2012-05-23 | 索尼公司 | Speaker device and method for forming speaker device |
| CN108600927A (en) * | 2018-07-30 | 2018-09-28 | 广州斐诺电子科技有限公司 | A kind of Microspeaker with acoustics shock-absorbing function |
-
2004
- 2004-10-21 CN CN 200420094318 patent/CN2738506Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1812639B (en) * | 2005-12-05 | 2011-11-23 | 程光 | Pre-stress vibrating diaphragm |
| CN101534462A (en) * | 2008-03-10 | 2009-09-16 | 罗伯特·博世有限公司 | Offset baffles for acoustic signal arrival synchronization |
| CN101534462B (en) * | 2008-03-10 | 2015-11-25 | 罗伯特·博世有限公司 | For the skew baffle of acoustic signal arrival synchronization |
| CN102474685A (en) * | 2009-07-23 | 2012-05-23 | 索尼公司 | Speaker device and method for forming speaker device |
| CN102170603A (en) * | 2011-05-20 | 2011-08-31 | 深圳麦博电器有限公司 | Mechanical frequency division diaphragm and manufacturing method thereof |
| CN102170603B (en) * | 2011-05-20 | 2014-01-22 | 深圳麦博电器有限公司 | Mechanical frequency division diaphragm and manufacturing method thereof |
| CN108600927A (en) * | 2018-07-30 | 2018-09-28 | 广州斐诺电子科技有限公司 | A kind of Microspeaker with acoustics shock-absorbing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141021 Granted publication date: 20051102 |