CN107465976A - A kind of new film for electroacoustic transducer - Google Patents
A kind of new film for electroacoustic transducer Download PDFInfo
- Publication number
- CN107465976A CN107465976A CN201710660603.8A CN201710660603A CN107465976A CN 107465976 A CN107465976 A CN 107465976A CN 201710660603 A CN201710660603 A CN 201710660603A CN 107465976 A CN107465976 A CN 107465976A
- Authority
- CN
- China
- Prior art keywords
- film
- diaphragm
- membrane portion
- electroacoustic transducer
- region
- 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
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
Abstract
The present invention relates to a kind of new film for electroacoustic transducer, include the elastomer 28 of one or more layers spraying, with the diaphragm inner region 29 changed for sound and for connecting the diaphragm outer region 30 of barrier film and the diaphragm intermediate region between the diaphragm inner region and diaphragm outer region, wherein described diaphragm inner region is demarcated preferably through linear side towards outside and the diaphragm outer region is demarcated preferably through linear side towards inner side, has the rigid membrane portion at edge；The flexible membrane portion being connected along edge with rigid membrane portion；The wherein outer surface of flexible membrane portion is in an idle state of the membrane recessed, and the Curvature change for being shaped as the outer surface when film is energized contributes to the air capacity that increase is moved by rigid membrane portion.
Description
Technical field
This patent disclosure relates generally to the film produced by manufacturing the method for the film for electroacoustic transducer, the film is using spray
Apply made of elastomer.
Background technology
The electroacoustic transducer being desirable for use in miniature electronic product is as compact as possible.However, for particularly with loudspeaker,
It is also expected to loudspeaker should be able to be exported with possible maximum frequency range.
Loudspeaker includes the film for being attached to voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil is located in the magnetic field limited by permanent magnet and yoke device.Loudspeaker
Performance depend on resonant frequency.It is very flat more than resonant frequency, output response.Therefore, lower resonant frequency produces broadband
Performance.Resonant frequency is the function of rigidity and the quality of moving parts.Rigidity depends on two factors：The rigidity of film and after
The rigidity of chamber.
Film in conventional micro-speaker is included by deep-draw or the thermoplastic foil being stamped and formed out.Paper tinsel has relatively high
Degree, and conversely there is relatively low compliance.In the case of no other measures, this film will be in conventional micro-speaker
It is middle to produce high resonant frequency.
Occur what is be made up of low elastomer more obvious than the rigidity of conventional thermoplastic paper tinsel in being recently modified of membrane technology
Film.For example, being the U.S. Patent application No.13/380 on June 23rd, 2010 (PCT application day) in the applying date, begged in detail in 428
Such a improvement is discussed, the U.S. Patent application is on April 19th, 2012 as US patent publication us No.2012/
0093353A1 is disclosed.(during the complete disclosure of this application is totally incorporated herein by reference).Disclosed film is by elastomer (bag
Include silicone) form, and be made using injection moulding.
Although there is many relative to using the thermoplastic foil of deep-draw or punching press to form elastomer film using injection moulding
Advantage, but it is not without shortcoming.Specifically, injection moulding needs the mould of two-piece type, and the mould adds answering for technique
Polygamy and many aspects for limiting design, the minimum thickness of such as obtainable film.Two-part moudle also will not be always complete
Full alignment, it is inconsistent so as to be produced in the multiple parts produced.And can be real even in the case of new die is used
When now almost perfectly aligned, mold component is also easily worn, and this may cause alignment problem later.
The content of the invention
The technical problem to be solved in the invention is to increase practical performance by setting elastomer；A kind of new use is provided
In the film of electroacoustic transducer.
To solve above-mentioned technical problem, structure of the invention includes the elastomer of one or more layers spraying, has and is used for
Sound conversion diaphragm inner region and for connecting the diaphragm outer region of barrier film and between the diaphragm inner region and diaphragm outer region
Diaphragm intermediate region, wherein the diaphragm inner region is demarcated and outside the barrier film preferably through linear side towards outside
Area is demarcated preferably through linear side towards inner side, has the rigid membrane portion at edge；Along edge and rigid film
The flexible membrane portion of part connection；The wherein outer surface of flexible membrane portion is in an idle state of the membrane recessed, and by into
Shape contributes to increase the air capacity moved by rigid membrane portion for the Curvature change of the outer surface when film is energized.
Further, the film includes the elastomer of the spraying more than one layer, and these layers are by with different mechanical performances
What different elastomeric materials were formed.
Further, the film also includes the non-elastomeric thermoplastic of one or more layers spraying.
Further, the film is fixed in electroacoustic transduction by the solidification of the elastomer of one or more layers spraying
One or more parts of device.
Further, the flexible membrane portion is provided with semi-circular shape.
Further, it is wheel-rim shape on the flexible membrane portion.
After said structure, the present invention increases practical performance by setting elastomer；And the design also has knot
The advantages of structure is simple, easily fabricated and practicality and high efficiency.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of the present invention.
Embodiment
A kind of new film for electroacoustic transducer as shown in Figure 1, include the elastomer 28 of one or more layers spraying, tool
Have for the diaphragm inner region 29 of sound conversion and for connecting the diaphragm outer region 30 of barrier film and positioned at the diaphragm inner region and barrier film
Diaphragm intermediate region between outskirt, wherein the diaphragm inner region demarcated preferably through linear side towards outside and
The diaphragm outer region is demarcated preferably through linear side towards inner side, has the rigid membrane portion at edge；Along side
The flexible membrane portion that edge is connected with rigid membrane portion；Wherein the outer surface of flexible membrane portion is in an idle state of the membrane recessed
, and the Curvature change for being shaped as the outer surface when film is energized contributes to what increase was moved by rigid membrane portion
Air capacity.
Above-mentioned film includes the elastomer 25 of the spraying more than one layer, and these layers 18 are by the difference with different mechanical performances
What elastomeric material was formed.
Above-mentioned film also includes the non-elastomeric thermoplastic 20 of one or more layers spraying.
Above-mentioned film 12 is fixed in the one of electroacoustic transducer by the solidification of the elastomer of one or more layers spraying
Individual or multiple parts.
Above-mentioned flexible membrane portion is provided with semi-circular shape 18.
It is wheel-rim shape 14 on above-mentioned flexible membrane portion.
Claims (6)
- A kind of 1. new film for electroacoustic transducer, it is characterised in that：Include the elastomer of one or more layers spraying, have and use In the diaphragm inner region of sound conversion and for connecting the diaphragm outer region of barrier film and between the diaphragm inner region and diaphragm outer region Diaphragm intermediate region, wherein the diaphragm inner region is demarcated preferably through linear side towards outside and the barrier film Outskirt is demarcated preferably through linear side towards inner side, has the rigid membrane portion at edge；Along edge and rigidity The flexible membrane portion of film part connection；The wherein outer surface of flexible membrane portion is in an idle state of the membrane recessed, and by It is configured to the air capacity that the Curvature change of the outer surface when film is energized contributes to increase to be moved by rigid membrane portion.
- 2. a kind of new film for electroacoustic transducer according to claim 1, it is characterised in that the film includes being more than The elastomer of one layer of spraying, these layers are made up of the different elastomeric materials with different mechanical performances.
- 3. a kind of new film for electroacoustic transducer according to claim 1, it is characterised in that the film also includes one Layer or the non-elastomeric thermoplastic of multilayer spraying.
- 4. a kind of new film for electroacoustic transducer according to claim 1, it is characterised in that the film passes through described One or more layers spraying elastomer solidification and be fixed in one or more parts of electroacoustic transducer.
- A kind of 5. new film for electroacoustic transducer according to claim 1, it is characterised in that the flexible membrane portion It is provided with semi-circular shape.
- A kind of 6. new film for electroacoustic transducer according to claim 1, it is characterised in that the flexible membrane portion Upper is wheel-rim shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710660603.8A CN107465976A (en) | 2017-08-04 | 2017-08-04 | A kind of new film for electroacoustic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710660603.8A CN107465976A (en) | 2017-08-04 | 2017-08-04 | A kind of new film for electroacoustic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107465976A true CN107465976A (en) | 2017-12-12 |
Family
ID=60548448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710660603.8A Pending CN107465976A (en) | 2017-08-04 | 2017-08-04 | A kind of new film for electroacoustic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107465976A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213871A (en) * | 2005-06-29 | 2008-07-02 | Nxp股份有限公司 | Diaphragm for an electroacoustic transducer, and electroacoustic transducer |
| CN101543093A (en) * | 2006-11-23 | 2009-09-23 | Nxp股份有限公司 | Membrane for an electroacoustic transducer and acoustic device |
| CN205647939U (en) * | 2015-10-01 | 2016-10-12 | 奥音科技（北京）有限公司 | A membrane for electroacoustic transducer |
-
2017
- 2017-08-04 CN CN201710660603.8A patent/CN107465976A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101213871A (en) * | 2005-06-29 | 2008-07-02 | Nxp股份有限公司 | Diaphragm for an electroacoustic transducer, and electroacoustic transducer |
| CN101543093A (en) * | 2006-11-23 | 2009-09-23 | Nxp股份有限公司 | Membrane for an electroacoustic transducer and acoustic device |
| CN205647939U (en) * | 2015-10-01 | 2016-10-12 | 奥音科技（北京）有限公司 | A membrane for electroacoustic transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171212 |
|
| RJ01 | Rejection of invention patent application after publication |