CN201854407U - Energy converter diaphragm - Google Patents
Energy converter diaphragm Download PDFInfo
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- CN201854407U CN201854407U CN2010206070236U CN201020607023U CN201854407U CN 201854407 U CN201854407 U CN 201854407U CN 2010206070236 U CN2010206070236 U CN 2010206070236U CN 201020607023 U CN201020607023 U CN 201020607023U CN 201854407 U CN201854407 U CN 201854407U
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- aluminum foil
- diaphragm
- foil layer
- transducer
- energy converter
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- Diaphragms For Electromechanical Transducers (AREA)
Abstract
The utility model provides an energy converter diaphragm, which has good tone quality, particularly good high-frequency tone quality. The energy converter diaphragm consists of three layers, namely an upper aluminum foil layer, a foamed polymethylacrylic acid imide flat plate and a lower aluminum foil layer in turn from top to bottom. In a preferred scheme, the foamed polymethylacrylic acid imide flat plate is connected with the upper aluminum foil layer and the lower aluminum foil layer in a gum jointing way. In a preferred scheme, the thicknesses of the upper aluminum foil layer and the lower aluminum foil layer are between 7 and 14 mum; and the thickness of the foamed polymethylacrylic acid imide flat plate is between 0.2 and 0.5 millimeter. The energy converter diaphragm has the advantages of extremely high intensity, stiffness, rigidity and flatness, capability of ensuring high acoustical property and particularly high performance on a high frequency band. A simple gum jointing process is adopted and no additional limiting device is arranged, so that a manufacturing process is simple, efficiency is improved and cost is lowered.
Description
Technical field
The utility model relates to a kind of diaphragm for transducer.
Background technology
Diaphragm for transducer is the core component of acoustical devices such as loud speaker, development along with market, acoustical device requires more and more higher as: properties of product such as loud speaker, receiver, buzzer, and acoustical device will be sought development towards miniaturization, slimming, high tone quality etc., makes to require more and more higher to acoustical device core component vibrating diaphragm.
The characteristic that diaphragm for transducer needs comprises high ratio modulus (E/ ρ), height ratio flexural rigidity (E/ ρ
3), suitable internal loss, high anti-mechanical fatigue, ageing, and anti, water proofing property.In view of these requirements, proposed to comprise metal, pottery, synthetic resin (as polyimides), synthetic fibers, native cellulose fibre, micro organism cellulose fiber, expanded polyester various different materials such as (PETG foaming bodies), these materials use different processing methods to process, also use in practice.
Yet every kind of material has its intrinsic characteristic, and with regard to the desired characteristic of vibrating diaphragm, the existing advantage of these inherent characteristics also has shortcoming.Thereby in actual applications, the vibrating diaphragm that homogenous material is formed presents quite difficulty of the desired multifrequency nature that is in well balanced state of vibrating diaphragm.
For example by the vibrating diaphragm made of paper of cellulose fibres such as wood pulp manufacturing, light weight, modulus of elasticity and internal loss are suitable, manufacture method is many, flexible design, cannot say for sure to be difficult to increase the modulus of elasticity that is used to guarantee bigger maximum power input by card but shortcoming is a water proofing property.And the vibrating diaphragm of making by synthetic resin, metal or similar material, the advantage that is easy to guarantee waterproof and is easy to give the high elastic modulus that is used to guarantee bigger maximum power input, shortcoming is that density height, internal loss are big, this vibrating diaphragm is not suitable for most using in intermediate frequency range or in all frequency ranges at low frequency, in such frequency range, vibrating membrane is necessary for light weight and high rigidity.
For this reason, people's suggestion obtains well balanced vibrating membrane by adopting the sandwich construction that is made of the multiple material with different qualities to make various performances, thereby remedies the shortcoming of various homogenous materials.A kind of known diaphragm for transducer comprises that ball top and center are the soft ring on plane, wherein, the ball top be positioned at soft ring above, its lower surface is connected with the plane at soft ring center, and is dull and stereotyped and fit in metal forming on the middle flat board in the middle of this ball top comprises.The middle dull and stereotyped foaming ethylene glycol terephthalate material that adopts is made.In order to guarantee to have enough bonding strengths between each layer, need to use bonding film or similar adhesive.In the middle of being glued at, metal forming on the flat board, make the ball top have very high intensity, thus the high frequency characteristics and the sound property of this diaphragm for transducer product of expanded application, and but acoustical quality is still undesirable, particularly high frequency tonequality.
The utility model content
The utility model provides a kind of diaphragm for transducer, and acoustical quality is good, especially high frequency tonequality.
Described diaphragm for transducer is formed by three layers, is upper strata aluminium foil, foaming polymethacrylimide flat board, lower floor's aluminium foil from top to bottom successively.
As preferred version, all adopt the gum laminating type to be connected between the dull and stereotyped and upper and lower layer of the foaming polymethacrylimide aluminium foil.
As preferred version, upper and lower layer aluminum foil thickness is 7～14 μ m; Foaming polymethacrylimide slab-thickness is 0.2～0.5mm.
The utility model is made of the ball top separately, have the following advantages: adopt aluminium foil, foaming polymethacrylimide material, aluminium foil three-layer sandwich structure, foaming polymethacrylimide material (structural foam) has the advantage that density is little and mechanical property is good, foaming polymethacrylimide material is a kind of rigidity closed cell foamed material, Polymethacrylimide (being called for short PMI) foam has good mechanical performance, heat distortion temperature, chemical stability and good croop property.Under the equal densities condition, compare, the strength and stiffness of PMI foam are the highest in all foam, having optimum weight and mechanical strength ratio and best thermal stability, therefore be widely used in the laminated material field, is the ideal material of making the high-strength light sandwich structure.Make diaphragm for transducer have splendid strength and stiffness,, have better performance at high band especially to guarantee excellent acoustical behavior.Gum applying metal forming fully improves the rigidity and the evenness of diaphragm for transducer in addition, makes and significantly improves in acoustical behavior, particularly high frequency performance.Adopt simple gum attaching process, do not have additional stopping means, make manufacturing process simple, efficient improves, cost reduces.
Description of drawings
Fig. 1 is the utility model diaphragm for transducer exploded view;
Fig. 2 is the Frequency Response curve of the utility model embodiment 1 and the described diaphragm for transducer of comparative example 1-3.
Embodiment
Below by embodiment the utility model is specifically described; it is important to point out that following examples can only be used for the utility model is further specified; can not be interpreted as the restriction to the utility model protection scope, the person skilled in the art in this field can make some nonessential improvement and adjustment according to above-mentioned content of the present utility model.
Embodiment 1
As shown in Figure 1, diaphragm for transducer is formed by three layers, is upper strata aluminium foil 3, foaming polymethacrylimide flat board 2, lower floor's aluminium foil 1 from top to bottom successively.All adopt the gum laminating type to be connected between the dull and stereotyped upper and lower layer of aluminium foil with both sides of foaming polymethacrylimide.Aluminum foil thickness is 7～14 μ m; Foaming polymethacrylimide slab-thickness is 0.2～0.5mm.
Comparative Examples 1
Diaphragm for transducer is formed by three layers, is upper strata aluminium foil 3, foaming PETG flat board 2, lower floor's aluminium foil 1 from top to bottom successively.The foaming PETG is dull and stereotyped all to adopt the gum laminating type to be connected with the aluminium foil of both sides.Aluminum foil thickness is 7～14 μ m; Foaming PETG slab-thickness is 0.2～0.5mm.
Comparative Examples 2
Diaphragm for transducer is formed by three layers, is upper strata aluminium foil 3, earthenware slab 2, lower floor's aluminium foil 1 from top to bottom successively.Earthenware slab all adopts the gum laminating type to be connected with the aluminium foil of both sides.Aluminum foil thickness is 7～14 μ m; Earthenware slab thickness is 0.2～0.5mm.
Comparative Examples 3
Diaphragm for transducer is formed by three layers, is upper strata aluminium foil 3, foaming PETG flat board 2, aluminium foil 1 from top to bottom successively.The foaming PETG is dull and stereotyped all to adopt the gum laminating type to be connected with the aluminium foil of both sides.Aluminum foil thickness is 7～14 μ m; Foaming PETG slab-thickness is 0.1～0.2mm.
Among Fig. 2, curve M S is the frequency response curve of diaphragm for transducer of the present utility model, and curve (A1, A2, A3) is respectively the frequency response curve of comparative examples 1,2,3 described diaphragm for transducer.Can learn that from Fig. 2 the frequency response sensitivity of curve M S in similar frequency bands is higher than the performance shown in other curves, so adopt foaming polymethacrylimide material as the diaphragm for transducer material, make diaphragm for transducer have splendid strength and stiffness, to guarantee excellent acoustical behavior, has better performance at high band especially.
Claims (3)
1. a diaphragm for transducer is characterized in that, forms by three layers, is upper strata aluminium foil, foaming polymethacrylimide flat board, lower floor's aluminium foil from top to bottom successively.
2. diaphragm for transducer as claimed in claim 1 is characterized in that, all adopts the gum laminating type to be connected between the dull and stereotyped and upper and lower layer of the foaming polymethacrylimide aluminium foil.
3. diaphragm for transducer as claimed in claim 1 or 2 is characterized in that, upper and lower layer aluminum foil thickness is 7～14 μ m; Foaming polymethacrylimide slab-thickness is 0.2～0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206070236U CN201854407U (en) | 2010-11-15 | 2010-11-15 | Energy converter diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206070236U CN201854407U (en) | 2010-11-15 | 2010-11-15 | Energy converter diaphragm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201854407U true CN201854407U (en) | 2011-06-01 |
Family
ID=44096785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206070236U Expired - Fee Related CN201854407U (en) | 2010-11-15 | 2010-11-15 | Energy converter diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201854407U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987003A (en) * | 2014-05-07 | 2014-08-13 | 博昱科技（丹阳）有限公司 | Dome of vibrating diaphragm of transducer |
| CN109862482A (en) * | 2018-12-29 | 2019-06-07 | 瑞声声学科技(深圳)有限公司 | A kind of top dome material, vibrating diaphragm and loudspeaker |
| WO2021128193A1 (en) * | 2019-12-26 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Carbon fiber dome and loudspeaker |
-
2010
- 2010-11-15 CN CN2010206070236U patent/CN201854407U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103987003A (en) * | 2014-05-07 | 2014-08-13 | 博昱科技（丹阳）有限公司 | Dome of vibrating diaphragm of transducer |
| CN109862482A (en) * | 2018-12-29 | 2019-06-07 | 瑞声声学科技(深圳)有限公司 | A kind of top dome material, vibrating diaphragm and loudspeaker |
| CN109862482B (en) * | 2018-12-29 | 2021-10-01 | 瑞声声学科技(深圳)有限公司 | Ball top material, vibrating diaphragm and loudspeaker |
| WO2021128193A1 (en) * | 2019-12-26 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Carbon fiber dome and loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171016 Address after: 213000, No. 576, Wu Zhong Road, Tianning District, Jiangsu, Changzhou Patentee after: Changzhou Ming Sheng Photoelectric Technology Co., Ltd. Address before: 213018 No. 985 Wu Zhong Road, Jiangsu, Changzhou Patentee before: Changzhou Tiansheng Neo-material Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20181115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |