CN105163244A - Diaphragm of loudspeaker of Bluetooth headset and production process - Google Patents
Diaphragm of loudspeaker of Bluetooth headset and production process Download PDFInfo
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- CN105163244A CN105163244A CN201510576848.3A CN201510576848A CN105163244A CN 105163244 A CN105163244 A CN 105163244A CN 201510576848 A CN201510576848 A CN 201510576848A CN 105163244 A CN105163244 A CN 105163244A
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- loudspeaker
- bluetooth earphone
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Abstract
The invention discloses a diaphragm of a loudspeaker of a Bluetooth headset and a production process thereof. The diaphragm of the loudspeaker of the Bluetooth headset comprises a polyethylene glycol terephthalate substrate layer and an aluminum alloy clad layer electroplated on the polyethylene glycol terephthalate substrate layer, wherein the aluminum alloy clad layer comprises the following components in percentages by weight: 0.5-1.2% of magnesium, 1.5-2.6% of manganese, 0.05-0.15% of titanium, less than 1.0% of impurity and the rest of aluminum. The diaphragm has the advantages of high intensity, strong flexibility and light specific gravity and has a good sound effect at low frequency, intermediate frequency and high frequency.
Description
Technical field
The present invention relates to loudspeaker techniques field, particularly a kind of bluetooth earphone diaphragm of loudspeaker and manufacturing process.
Background technology
The diaphragm that namely vibrating diaphragm vibrates, is applied to loud speaker.The manufactured materials of vibrating diaphragm is varied, can be metal, also can be plastics, and also can be animal and plant fiber braiding, these materials have different vibration characteristic, also make to adopt the loud speaker of different vibrating diaphragm can send the sound of different-style.
Metal vibration diaphragm mainly contains again aluminium alloy vibrating diaphragm, titanium alloy diaphragm, density is low, good rigidly, ductility are outstanding feature that it has.Due to aluminium, titanium alloy can process very frivolous and rigidity is outstanding, therefore these two kinds of materials be usually used to high pitch loudspeaker design in the middle of, but metal high pitch loudspeaker, easily there is the sense of hearing of burr, easily make people produce auditory fatigue.
In the prior art, the bluetooth earphone diaphragm of loudspeaker adopts PETG (PET) vibrating diaphragm usually, high, the easy processing of this PETG vibrating diaphragm plasticity, cost are low, when low frequency, there is better sounding effect, but when medium-high frequency, sounding effect is poor, simultaneously, this PETG shake film strength and rigidity also poor, need to increase vibrating diaphragm thickness for cost.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned deficiency of the prior art, there is provided a kind of intensity high, flexible strong, light specific gravity, and all there is when low frequency, intermediate frequency and high frequency the bluetooth earphone diaphragm of loudspeaker of good sounding effect, for this reason, the present invention also will provide a kind of manufacturing process of this bluetooth earphone diaphragm of loudspeaker.
For solving above-mentioned first technical problem, technical scheme of the present invention is: a kind of bluetooth earphone diaphragm of loudspeaker, the aluminum alloy coating comprising PETG substrate layer and be plated on PETG substrate layer; The component of described aluminum alloy coating is: magnesium, and its percentage by weight is 0.5-1.2%; Manganese, its percentage by weight is 1.5-2.6%; Titanium, its percentage by weight is 0.05-0.15%; Impurity, its percentage by weight is less than 1.0%; All the other are aluminium.
The thickness of described PETG substrate layer is 6-9 μm, and be preferably 7.2-7.8 μm, the thickness of described aluminum alloy coating is 0.05-0.15 μm, is preferably 0.08-0.12 μm.
For solving above-mentioned second technical problem, technical scheme of the present invention is: a kind of manufacturing process of the bluetooth earphone diaphragm of loudspeaker, comprises following manufacturing step:
(1) on PETG substrate layer, spray one deck aluminum alloy coating, make vibrating diaphragm semi-finished product;
(2) on vibrating diaphragm semi-finished product, arrange upper speaker copper ring, and apply glue on loud speaker copper ring, vibrating diaphragm semi-finished product and loud speaker copper ring are bonded together, put into mould together, its forming temperature is 150-180 degree;
(3), after shaping 30 seconds-90 seconds, cooling, molding, completes the manufacture of the bluetooth earphone diaphragm of loudspeaker.
The invention has the beneficial effects as follows: one, substrate layer of the present invention are PETG (PET), high, the easy processing of its plasticity, cost are low, coating of the present invention is the aluminum alloy coating containing magnesium, manganese, titanium, high, flexible strong, the light specific gravity of its intensity; After substrate layer is combined with coating, both advantages can be taken into account, and substrate layer is done lighter and thinner; Two, the present invention is higher than spring rate at the vibrating diaphragm of PET alloy plating, the acoustic propagation velocity of aluminium is faster than PET material acoustic propagation velocity, and the propagation velocity of sound is influential to loudspeaker distortions, when low frequency, diaphragm oscillations is uniform substantially, vibrating diaphragm there will be bending wave and longitudinal wave during medium-high frequency, and produce resonance and the antiresonance of bending wave and longitudinal wave; The peak valley frequency of frequency response is directly proportional to the velocity of sound, and the peak valley point in frequency response upwards moves by titanium alloy diaphragm of therefore aluminizing, and high frequency playback scope also must be expanded, thus makes all have good sounding effect when low frequency, intermediate frequency and high frequency.
Accompanying drawing explanation
Fig. 1 is the cutaway view of vibrating diaphragm of the present invention.
Fig. 2 is the in-Diane response curve comparison figure of vibrating diaphragm of the present invention and common PET vibrating diaphragm.
In figure: 1. PETG substrate layer; 2. aluminum alloy coating; A. vibrating diaphragm of the present invention; B. common PET vibrating diaphragm.
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and operation principle are described in further detail.
As shown in Figure 1, the present invention is a kind of bluetooth earphone diaphragm of loudspeaker, comprises PETG substrate layer 1 and is plated on the aluminum alloy coating 2 on PETG substrate layer 1; The component of described aluminum alloy coating 2 is: magnesium, and its percentage by weight is 0.5-1.2%; Manganese, its percentage by weight is 1.5-2.6%; Titanium, its percentage by weight is 0.05-0.15%; Impurity, its percentage by weight is less than 1.0%, and this impurity comprises iron, copper, zinc; All the other are aluminium.
As shown in Figure 1, the thickness of described PETG substrate layer 1 is 6-9 μm, and be preferably 7.2-7.8 μm, the thickness of described aluminum alloy coating 2 is 0.05-0.15 μm, is preferably 0.08-0.12 μm.Adopt the vibrating diaphragm of this thickness parameter, its plasticity, intensity, flexibility, reach best than weight average, sounding effect when low frequency, intermediate frequency and high frequency is also best.
The manufacturing process of the described bluetooth earphone diaphragm of loudspeaker, comprises following manufacturing step:
(1) on PETG substrate layer, spray one deck aluminum alloy coating, make vibrating diaphragm semi-finished product;
(2) on vibrating diaphragm semi-finished product, arrange upper speaker copper ring (another parts of loud speaker, not shown), and apply glue on loud speaker copper ring, vibrating diaphragm semi-finished product and loud speaker copper ring are bonded together, put into mould together, its forming temperature is 150-180 degree;
(3) after shaping 30 seconds-90 seconds, be preferably after shaping 55 seconds-65 seconds, cooling, molding, completes the manufacture of the bluetooth earphone diaphragm of loudspeaker.
As shown in Figure 2, for the in-Diane response curve comparison figure of vibrating diaphragm A of the present invention and common PET vibrating diaphragm B, as shown in the figure, the ratio spring rate of the vibrating diaphragm A of alloy plating of the present invention is high (is modulus of elasticity again than spring rate, its definition is the stress increment of certain form and the ratio of the strain increment of correlation form), the acoustic propagation velocity of aluminium alloy is faster than common PET material acoustic propagation velocity, and the propagation velocity of sound is influential to loudspeaker distortions, when low frequency, diaphragm oscillations is uniform substantially, when the medium-high frequency of 300Hz-3KHz, vibrating diaphragm there will be bending wave and longitudinal wave, and produce resonance and the antiresonance of bending wave and longitudinal wave.The peak valley frequency of frequency response is directly proportional to the velocity of sound, peak valley point in frequency response upwards moves by titanium alloy diaphragm of therefore aluminizing, and high frequency playback scope also must be expanded, thus make invention vibrating diaphragm A relative common PET vibrating diaphragm B, when the medium-high frequency of 300Hz-3KHz, there is good sounding effect.
The above is only better embodiment of the present invention, every above execution mode is done according to technical scheme of the present invention any trickle amendment, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (6)
1. a bluetooth earphone diaphragm of loudspeaker, is characterized in that: the aluminum alloy coating comprising PETG substrate layer and be plated on PETG substrate layer; The component of described aluminum alloy coating is: magnesium, and its percentage by weight is 0.5-1.2%; Manganese, its percentage by weight is 1.5-2.6%; Titanium, its percentage by weight is 0.05-0.15%; Impurity, its percentage by weight is less than 1.0%; All the other are aluminium.
2. the bluetooth earphone diaphragm of loudspeaker according to claim 1, is characterized in that: the thickness of described PETG substrate layer is 6-9 μm, and the thickness of aluminum alloy coating is 0.05-0.15 μm.
3. the bluetooth earphone diaphragm of loudspeaker according to claim 2, is characterized in that: the thickness of described PETG substrate layer is 7.2-7.8 μm, and the thickness of aluminum alloy coating is 0.08-0.12 μm.
4. the bluetooth earphone diaphragm of loudspeaker according to claim 1, is characterized in that: described impurity comprises iron, copper, zinc.
5. the manufacturing process of the bluetooth earphone diaphragm of loudspeaker described in any one in claim 1-4, is characterized in that, comprise following manufacturing step:
(1) on PETG substrate layer, spray one deck aluminum alloy coating, make vibrating diaphragm semi-finished product;
(2) on vibrating diaphragm semi-finished product, arrange upper speaker copper ring, and apply glue on loud speaker copper ring, vibrating diaphragm semi-finished product and loud speaker copper ring are bonded together, put into mould together, its forming temperature is 150-180 degree;
(3), after shaping 30 seconds-90 seconds, cooling, molding, completes the manufacture of the bluetooth earphone diaphragm of loudspeaker.
6. the manufacturing process of the bluetooth earphone diaphragm of loudspeaker according to claim 5, is characterized in that: described molding time is 55 seconds-65 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576848.3A CN105163244A (en) | 2015-09-12 | 2015-09-12 | Diaphragm of loudspeaker of Bluetooth headset and production process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510576848.3A CN105163244A (en) | 2015-09-12 | 2015-09-12 | Diaphragm of loudspeaker of Bluetooth headset and production process |
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| CN105163244A true CN105163244A (en) | 2015-12-16 |
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| CN201510576848.3A Pending CN105163244A (en) | 2015-09-12 | 2015-09-12 | Diaphragm of loudspeaker of Bluetooth headset and production process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255011A (en) * | 2016-09-30 | 2016-12-21 | 惠州市悦声电子有限公司 | A kind of have the vibrating diaphragm strengthening medium and low frequency section |
| CN110784808A (en) * | 2018-07-31 | 2020-02-11 | 刘汉兵 | Transparent vibrating diaphragm and manufacturing process thereof |
| CN115589562A (en) * | 2022-10-19 | 2023-01-10 | 深圳市三诺数字科技有限公司 | Preparation method of composite loudspeaker diaphragm and related equipment thereof |
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| CN1494354A (en) * | 2003-09-27 | 2004-05-05 | 百富非凡机电设备（北京）有限公司 | Improved vibration membrane base material construction unit of loudspeaker and its manufacturing method |
| CN101631266A (en) * | 2009-07-28 | 2010-01-20 | 兴升精密部件(惠州)有限公司 | Speaker cones material and preparation method thereof |
| US20110183203A1 (en) * | 2010-01-27 | 2011-07-28 | Molecular Nanosystems, Inc. | Polymer supported electrodes |
| CN202269005U (en) * | 2011-11-03 | 2012-06-06 | 易力声科技(深圳)有限公司 | Loudspeaker diaphragm and loudspeaker using same |
| US20140327841A1 (en) * | 2013-05-06 | 2014-11-06 | Electronics And Telecommunications Research Institute | Touch screen panel and display including the same |
| CN204259146U (en) * | 2014-10-30 | 2015-04-08 | 东莞泉声电子有限公司 | Acoustics metal vibration diaphragm |
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2015
- 2015-09-12 CN CN201510576848.3A patent/CN105163244A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1494354A (en) * | 2003-09-27 | 2004-05-05 | 百富非凡机电设备（北京）有限公司 | Improved vibration membrane base material construction unit of loudspeaker and its manufacturing method |
| CN101631266A (en) * | 2009-07-28 | 2010-01-20 | 兴升精密部件(惠州)有限公司 | Speaker cones material and preparation method thereof |
| US20110183203A1 (en) * | 2010-01-27 | 2011-07-28 | Molecular Nanosystems, Inc. | Polymer supported electrodes |
| CN202269005U (en) * | 2011-11-03 | 2012-06-06 | 易力声科技(深圳)有限公司 | Loudspeaker diaphragm and loudspeaker using same |
| US20140327841A1 (en) * | 2013-05-06 | 2014-11-06 | Electronics And Telecommunications Research Institute | Touch screen panel and display including the same |
| CN204259146U (en) * | 2014-10-30 | 2015-04-08 | 东莞泉声电子有限公司 | Acoustics metal vibration diaphragm |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255011A (en) * | 2016-09-30 | 2016-12-21 | 惠州市悦声电子有限公司 | A kind of have the vibrating diaphragm strengthening medium and low frequency section |
| CN110784808A (en) * | 2018-07-31 | 2020-02-11 | 刘汉兵 | Transparent vibrating diaphragm and manufacturing process thereof |
| CN115589562A (en) * | 2022-10-19 | 2023-01-10 | 深圳市三诺数字科技有限公司 | Preparation method of composite loudspeaker diaphragm and related equipment thereof |
| CN115589562B (en) * | 2022-10-19 | 2023-08-01 | 深圳市三诺数字科技有限公司 | Preparation method of composite loudspeaker diaphragm and related equipment thereof |
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