CN108141671A - Loud speaker - Google Patents
Loud speaker Download PDFInfo
- Publication number
- CN108141671A CN108141671A CN201680060809.0A CN201680060809A CN108141671A CN 108141671 A CN108141671 A CN 108141671A CN 201680060809 A CN201680060809 A CN 201680060809A CN 108141671 A CN108141671 A CN 108141671A
- Authority
- CN
- China
- Prior art keywords
- oscillating plate
- loud speaker
- voice coil
- cheese
- plate
- 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
Links
Classifications
-
- 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
-
- 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
- H04R9/04—Construction, mounting, or centering of coil
Abstract
Including：Oscillating plate (11)；And voice coil (12), the voice coil (12) are located at mounted on the outer diameter of oscillating plate (11) at the position away from center (70 ± 5) %.
Description
Technical field
The present invention relates to a kind of loud speakers of such as playing audio signal.
Background technology
In recent years, with the slimming of LCD TV etc., be loaded into above-mentioned LCD TV etc. loud speaker be also required to it is slim
Change.About the slimming of loud speaker, have using conical oscillating plate or using cheese oscillating plate (referring for example to patent document
2) 1st, the various modes such as.Such as in patent document 1, divide resonance (Japanese to not generated in the case where oscillating plate is thinned：
Segmentation resonance), the part in cheese oscillating plate center is made to be recessed.
Existing technical literature
Patent document
Patent document 1：Japanese Patent Laid-Open 2004-260736 bulletins
Patent document 2：Japanese Patent Laid-Open 2007-005906 bulletins
Invention content
The technical problems to be solved by the invention
On the other hand, in conical oscillating plate, the cone oscillating plate is made for reinforced structure on direction of vibration
With depth, so as to which bending vibration be made to be generated in high-frequency domain.However, above-mentioned depth can increase the depth of loud speaker, for thin
It is unfavorable for type.Therefore, it in order to be thinned the depth of loud speaker, needs to make conical oscillating plate thinning (shoaling).
On the other hand, in conical oscillating plate, if depth is smaller or material does not have rigidity, point as mechanical resonance is easily generated
Cut resonance.In addition, in the case where being driven by the VC diameters (driving diameter) of small diameter, also easily generate bending and shake
It is dynamic.That is, if cone oscillating plate is thinned, there are following technical problems：Diaphagras is easily generated, and since low frequency
It generates sound pressure characteristic to change, so as to bring undesirable influence to sound quality.
In addition, the depth of conical oscillating plate is that dented space is formed in the front surface of oscillating plate.Above-mentioned dented space
With following drawbacks (dishing effect) acoustically：The sound pressure characteristic of the high-frequency domain in loud speaker is made to generate variation, so as to make
Flatness is damaged.
The present invention is in order to solve the above-mentioned technical problem to make, its purpose is to provide a kind of loud speaker, in the loud speaker
In, even if oscillating plate, the diaphagras of lower frequency region in can also inhibiting, so as to obtain flat sound pressure characteristic is thinned.
Technical scheme applied to solve the technical problem
The loud speaker of the present invention includes：Oscillating plate；And voice coil, the voice coil are located at mounted on the outer diameter of oscillating plate away from
At the position of the heart (70 ± 5) %.
Invention effect
According to the present invention, due to using the above structure, even if oscillating plate is thinned, in can also inhibiting the segmentation of lower frequency region be total to
It shakes, so as to obtain flat sound pressure characteristic.
Description of the drawings
Fig. 1 is the sectional view of the configuration example for the loud speaker for representing embodiment of the present invention one.
Fig. 2 is the sectional view of another configuration example for the loud speaker for representing embodiment of the present invention one.
Fig. 3 is the sectional view of the another configuration example for the loud speaker for representing embodiment of the present invention one.
Specific embodiment
Hereinafter, with reference to attached drawing, detailed description of embodiments of the present invention.
Embodiment one
Fig. 1 is the sectional view of the configuration example for the loud speaker for representing embodiment of the present invention one.
Loud speaker is the slim loud speaker of such as playing audio signal.Above-mentioned loud speaker includes vibrational system 1, to vibrational system
The magnetic loop 2 and holding vibrational system 1 of 1 application magnetic force and the frame 3 for combining the vibrational system 1 and magnetic loop 2.This
Outside, magnetic loop 2 is made of magnet 21, plate 22 and pole piece 23, and gap is equipped between plate 22 and pole piece 23.
As shown in Figure 1, vibrational system 1 includes oscillating plate 11, voice coil (bobbin) 12, edge 13 and damper 14 etc..
Oscillating plate 11 be the shape of main visual observation for circular oscillating plate, the transmitting sound by the vibration from voice coil 12
Wave.In the example of Fig. 1, show a case that form oscillating plate 11 using cheese oscillating plate 111 and conical oscillating plate 112.
Cheese oscillating plate 111 is the oscillating plate with convex cross sectional shape prominent to center.
Conical oscillating plate 112 is the oscillating plate for the periphery that cheese oscillating plate 111 is set in concentric circles.In addition,
In Fig. 1, conical oscillating plate 112 is connected to cheese oscillating plate 111 by modes such as bondings.
By providing signal, voice coil 12 is made to be reacted with magnetic loop 2 and vibrating voice coil 12, and the vibration is transferred to and is shaken
Movable plate 11.Above-mentioned voice coil 12 is configured at the gap portion of magnetic loop 2.In addition, one end of voice coil 12 is connected by modes such as bondings
In oscillating plate 11.Here, in the present invention, one end of voice coil 12 is mounted on the outer diameter D of oscillating plate 111Be located at away from center (70
± 5) at the position of %.In addition, signal is supplied to voice coil 12 from terminal 5 by conducting wire 4.
Edge 13 is the component for the convex cross sectional shape that oscillating plate 11 is supported on to frame 3.In above-mentioned edge 13, the edge
13 inner circumferential is connected to the periphery of oscillating plate 11 by bonding agent etc., and the periphery at above-mentioned edge 13 is fixed on by modes such as bondings
Frame 3.
Damper 14 makes the vibration of voice coil 12 decay.In above-mentioned damper 14, one end of the damper 14 passes through bonding
Etc. modes be connected to voice coil 12, the other end of above-mentioned damper 14 is fixed on frame 3 by the modes such as being bonded.
In addition, the face when inner side and outer side progress front that oscillating plate 11 is configured to the position installed to voice coil 12 is observed
Product is identical.In the example of Fig. 1, the inclination of cheese oscillating plate 111 and the inclined design of cone oscillating plate 112 are into making to above-mentioned
The area that inner side and outer side is carried out when front is observed is identical.
Then, the effect of the loud speaker of the present invention is illustrated.
Here, according to " node drives (Japanese：Festival drives Move) " it is theoretical it is found that can be by using the power of same diameter to circular flat
The node of the axial symmetry resonance mode of plate is driven, so as to offset influence of the above-mentioned resonance to sound pressure characteristic.
On the other hand, in the present invention, voice coil 12 is mounted on to the outer diameter D of oscillating plate 111Be located at away from center (70 ± 5) %'s
At position.In other words, by VC diameters (driving diameter) D2With the outer diameter D of oscillating plate 111The ratio between be set as (70 ± 5) %.This meaning
It, driving diameter D2With the pitch diameter of axial symmetry resonance mode basic one generated in oscillating plate 11 of the inner side and outer side in one
It causes, so as to form node driving.Thereby, by above structure, influence of the resonance to sound pressure characteristic can be offset.
In addition, thereby, can use reduce the depth of oscillating plate 11, reduce oscillating plate 11 depth/outer diameter it
The structure close to tablet of ratio.In addition, by using the smaller oscillating plate 11 of depth, it can be by the front surface of oscillating plate 11
Dented space (Japanese：く Pot み Kong Inter) volume reduce, so as to inhibit by " dishing effect (Japanese：く Pot body effect) " caused by
The variation of sound pressure characteristic.
In addition, oscillating plate 11 is configured to position (the driving diameter D installed to voice coil 122Position) inner side and outer side
Area when carrying out front observation is identical.In this way, by driving diameter D2Outside and inside be set as identical surface area,
It can make the balance of driving become uniform, and can prevent segmentation from resonating.
In addition, it is above, it shows and is connected cheese oscillating plate 111 and conical oscillating plate 112 by modes such as bondings
Situation about connecing.However, being not limited to this, can also be formed as making what cheese oscillating plate 111 was detached with conical oscillating plate 112
Structure can also be integrally formed.
In addition, the orientation of cheese oscillating plate 111 and conical oscillating plate 112 can emit relative to the sound of loud speaker
Direction (top of figure) arbitrarily orients.For example, domed shape can both be set as convex, concavity can also be set as.In addition, also may be used
By dome inner peripheral portion to the dome groove shape for being recessed and being formed concave-convex combination in the opposite direction.In addition, it in fig. 2 it is shown that adopts
With the oscillating plate of falling cheese 113 of the recessed cross sectional shape towards central concave with the feelings of the cheese oscillating plate 111 of replacement Fig. 1
Condition.
In addition, it in fig. 3 it is shown that is formed to form structural strong structure using cross sectional shape by multiple curved surfaces
Oscillating plate 15 situation.In the example in fig. 3, it shows using the vibration in curved surface of the concentric circles setting with three kinds of curvature
The situation of plate 15.Utilize this oscillating plate 15, it may have the variation of the sound pressure characteristic as caused by " dishing effect " is inhibited
Effect.
As described above, according to the present embodiment one, due to including oscillating plate 11 and the outer diameter D mounted on oscillating plate 111
Be located at the position away from center (70 ± 5) % at voice coil 12, therefore, though be thinned oscillating plate 11, low frequency in can also inhibiting
The segmentation resonance in domain, so as to obtain flat sound pressure characteristic.
In addition, the present application can in the range of the invention to embodiment be formed arbitrarily element deform or
It is the arbitrary inscape for omitting embodiment.
Industrial utilizability
In the loudspeaker of the present invention, even if oscillating plate is thinned, the segmentation resonance of lower frequency region in can also inhibiting, so as to obtain
Flat sound pressure characteristic is obtained, loud speaker of the invention can be suitble to use in loud speaker of such as playing audio signal etc..
Symbol description
1 vibrational system；2 magnetic loops；3 frames；4 conducting wires；5 terminals；11 oscillating plates；12 voice coils；13 edges；14 dampers；
15 oscillating plates；21 magnets；22 plates；23 pole pieces；111 cheese oscillating plates；112 conical oscillating plates；113 vibrations of falling cheese
Plate.
Claims (5)
1. a kind of loud speaker, which is characterized in that including：
Oscillating plate；And
Voice coil, the voice coil are located at mounted on the outer diameter of the oscillating plate at the position away from center (70 ± 5) %.
2. loud speaker as described in claim 1, which is characterized in that
The area that the inner side and outer side of the position installed to the voice coil of the oscillating plate is carried out when front is observed is identical.
3. loud speaker as described in claim 1, which is characterized in that
The oscillating plate has：
Cheese oscillating plate；And
Conical oscillating plate, the cone oscillating plate are set to the periphery of the cheese oscillating plate in concentric circles.
4. loud speaker as described in claim 1, which is characterized in that
The oscillating plate has：
The oscillating plate of falling cheese；And
Conical oscillating plate, the cone oscillating plate are set to the periphery of the oscillating plate of falling cheese in concentric circles.
5. loud speaker as described in claim 1, which is characterized in that
The oscillating plate is the oscillating plate that multiple surface compositions form.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-208867 | 2015-10-23 | ||
| JP2015208867A JP2017085235A (en) | 2015-10-23 | 2015-10-23 | Loudspeaker |
| PCT/JP2016/074627 WO2017068854A1 (en) | 2015-10-23 | 2016-08-24 | Speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108141671A true CN108141671A (en) | 2018-06-08 |
Family
ID=58556922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680060809.0A Pending CN108141671A (en) | 2015-10-23 | 2016-08-24 | Loud speaker |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2017085235A (en) |
| CN (1) | CN108141671A (en) |
| WO (1) | WO2017068854A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952880B2 (en) * | 1978-08-28 | 1984-12-21 | 松下電器産業株式会社 | speaker |
| JPS5912691A (en) * | 1982-07-13 | 1984-01-23 | Matsushita Electric Ind Co Ltd | Small-sized speaker |
| JP2005168001A (en) * | 2003-11-13 | 2005-06-23 | Matsushita Electric Ind Co Ltd | Tweeter |
| JP2008141663A (en) * | 2006-12-05 | 2008-06-19 | Onkyo Corp | Speaker |
-
2015
- 2015-10-23 JP JP2015208867A patent/JP2017085235A/en active Pending
-
2016
- 2016-08-24 CN CN201680060809.0A patent/CN108141671A/en active Pending
- 2016-08-24 WO PCT/JP2016/074627 patent/WO2017068854A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017068854A1 (en) | 2017-04-27 |
| JP2017085235A (en) | 2017-05-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180608 |