CN112203208A - Passive radiating plate and preparation method thereof - Google Patents

Passive radiating plate and preparation method thereof Download PDF

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Publication number
CN112203208A
CN112203208A CN202011081752.7A CN202011081752A CN112203208A CN 112203208 A CN112203208 A CN 112203208A CN 202011081752 A CN202011081752 A CN 202011081752A CN 112203208 A CN112203208 A CN 112203208A
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China
Prior art keywords
polysiloxane
siloxane
vinyl
terminated dimethyl
silicone gel
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CN202011081752.7A
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Chinese (zh)
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CN112203208B (en
Inventor
林致宏
张恺容
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Qisda Optronics Suzhou Co Ltd
Qisda Corp
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Qisda Optronics Suzhou Co Ltd
Qisda Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a passive radiation plate and a preparation method thereof, wherein the passive radiation plate is made of the following materials: vinyl terminated dimethylmethylvinyl (siloxane and polysiloxane); vinyl terminated dimethyl (siloxane and polysiloxane); and a silicone gel. The invention can solve the problem of poor performance of the bass effect of the sound box in the prior art.

Description

Passive radiating plate and preparation method thereof
The application is a divisional application of an original application with the application date of 2017, 11 and 28 months and the application number of 201711211227.0 and the invention name of passive radiation plate and preparation method.
Technical Field
The invention relates to the field of sound boxes, in particular to a passive radiation plate for a sound box and a preparation method thereof.
Background
For a mini-speaker or mini-speaker, the speaker used cannot be too large due to volume limitations, and a speaker of 2 inches or less is generally used, so that the volume of air pushed by the speaker is small each time the speaker vibrates due to the small diameter of the speaker diaphragm, and the low volume of air pushed by the speaker is directly related to the low volume of air pushed by the speaker, so that the natural defect of the mini-speaker results in the lack of bass.
In fact, the passive diaphragm has a structure similar to that of a loudspeaker, and has a diaphragm for pushing air and a corrugated rim for restoring the diaphragm to a normal position, but the passive diaphragm has no driving mechanism, that is, it cannot make sound, and thus how does the passive diaphragm work? Because passive vibrating diaphragm and loudspeaker unit are installed in sealed box, like this, when loudspeaker work produced sound, loudspeaker unit's motion can lead to the air in the box to be compressed and the extension, and under the effect that atmospheric pressure changes, passive vibrating diaphragm produced the vibration, promoted the air outside the box, just so can sound. Since the passive diaphragm can be designed at the bottom or rear or front or side of the sound box, its vibration area can be made larger. Therefore, the volume of the pushing air is increased, the bass volume is greatly improved, meanwhile, the caliber of the passive vibrating diaphragm is increased, the resonant frequency of the passive vibrating diaphragm can be reduced, and the sound box can obtain better bass diving depth when sounding. Thus, a good bass effect can be obtained even if a small loudspeaker or a mini sound box is used by means of a large passive diaphragm. The material of the passive radiating plate can determine the performance of bass expression.
The materials commonly used at present are nitrile rubber (NBR) or butyl rubber (IIR) series rubber, but the bass effect is not satisfactory.
Disclosure of Invention
Therefore, an object of the present invention is to provide a passive radiating plate and a method for manufacturing the same, so as to solve the problem of poor bass effect of the sound box in the prior art.
In order to achieve the above object, the present invention provides a passive radiating plate, which is made of the following materials:
vinyl terminated dimethylmethylvinyl (siloxane and polysiloxane);
vinyl terminated dimethyl (siloxane and polysiloxane); and
a silicone gel.
Preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel are respectively: 25-45%, 25-45% and 15-35%.
Preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel are respectively: 35%, 40% and 25%.
Preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel are respectively: 25%, 45% and 30%;
or the weight percentages of the vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), the vinyl-terminated dimethyl (siloxane and polysiloxane) and the silicone gel are respectively as follows: 45%, 25% and 30%.
Preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel are respectively: 41%, 44% and 15%.
Preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel are respectively: 40%, 25% and 35%.
Preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel are respectively: 20-40%, 30-50% and 20-40%.
Preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel are respectively: 28%, 40% and 32%;
or the weight percentages of the vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), the vinyl-terminated dimethyl (siloxane and polysiloxane) and the silicone gel are respectively as follows: 40%, 40% and 20%;
or the weight percentages of the vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), the vinyl-terminated dimethyl (siloxane and polysiloxane) and the silicone gel are respectively as follows: 20%, 50% and 30%;
or the weight percentages of the vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), the vinyl-terminated dimethyl (siloxane and polysiloxane) and the silicone gel are respectively as follows: 30%, 30% and 40%.
In order to achieve the above object, the present invention further provides a method for manufacturing the passive radiating plate, which comprises the following steps:
uniformly mixing all the materials; and
and molding the mixed material by a hot pressing or injection molding mode to form the passive radiation plate.
Preferably, the passive radiating plate is provided with a counterweight, and the passive radiating plate is mounted on the sound box device.
Compared with the prior art, the invention adopts the combination of the vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), the vinyl-terminated dimethyl (siloxane and polysiloxane) and the silica gel in a certain weight percentage, so that the bass performance of the sound box can be greatly improved as expected.
The advantages and spirit of the present invention can be further understood by the following detailed description of the invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram showing bass performance of passive radiation plates manufactured according to example 1 and comparative example 1 of the present invention.
Fig. 2 is a schematic diagram showing bass performance of the passive radiating panel manufactured in example 4 of the present invention and comparative example 1.
Detailed Description
The invention provides a passive radiating plate, which is applied to sound box equipment, for example, wherein the passive radiating plate is made of the following materials: vinyl terminated dimethylmethylvinyl (siloxane and polysiloxane) having a CAS number 68083-18-1; vinyl terminated dimethyl (siloxane and polysiloxane) having a CAS number 68083-19-2; and silicone gel having CAS number 112926-00-8.
Wherein the weight percentages of the vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), the vinyl-terminated dimethyl (siloxane and polysiloxane) and the silicone gel are respectively as follows: 25-45%, 25-45% and 15-35%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 35%, 40% and 25%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 25%, 45% and 30%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 45%, 25% and 30%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 41%, 44% and 15%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 40%, 25% and 35%.
In another embodiment, the weight percentages of vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel are: 20-40%, 30-50% and 20-40%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 28%, 40% and 32%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 40%, 40% and 20%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 20%, 50% and 30%.
And preferably, the weight percentages of the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), the vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are respectively: 30%, 30% and 40%.
In addition, the invention also provides a preparation method of the passive radiating plate, which comprises the following steps: uniformly mixing all the materials; and molding the mixed material by a hot pressing or injection molding mode to form the passive radiation plate.
In addition, the preparation method also comprises the step of arranging a counterweight sheet on the passive radiation plate, and the passive radiation plate is arranged on the sound box equipment. Wherein the function of counter weight piece is: providing an inertial force for the vibrating structure in the loudspeaker to vibrate back and forth.
The present invention will be described with reference to specific examples.
Example 1
Uniformly mixing 35%, 40% and 25% by weight of vinyl terminated dimethyl methylvinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane) and silicone gel, respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Example 2
A preparation method of a passive radiating plate comprises the following steps:
uniformly mixing 41%, 44% and 15% by weight of vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), vinyl-terminated dimethyl (siloxane and polysiloxane) and silicone gel respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Example 3
A preparation method of a passive radiating plate comprises the following steps:
uniformly mixing vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), vinyl-terminated dimethyl (siloxane and polysiloxane) and silicone gel in the weight percentages of 40%, 25% and 35%, respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Example 4
A preparation method of a passive radiating plate comprises the following steps:
uniformly mixing 28%, 40% and 32% by weight of vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), vinyl-terminated dimethyl (siloxane and polysiloxane) and silicone gel respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Example 5
Uniformly mixing 20%, 50% and 30% by weight of vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), vinyl-terminated dimethyl (siloxane and polysiloxane) and silicone gel respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Example 6
Uniformly mixing 30%, 30% and 40% by weight of vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), vinyl-terminated dimethyl (siloxane and polysiloxane) and silicone gel respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Example 7
Uniformly mixing 25%, 45% and 30% by weight of vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), vinyl-terminated dimethyl (siloxane and polysiloxane) and silicone gel, respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Example 8
Uniformly mixing vinyl-terminated dimethylmethylvinyls (siloxane and polysiloxane), vinyl-terminated dimethyl (siloxane and polysiloxane), and silicone gel in the weight percentages of 40%, and 20%, respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Example 9
Uniformly mixing 45%, 25% and 30% by weight of vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), vinyl-terminated dimethyl (siloxane and polysiloxane) and silicone gel respectively; and
and forming the mixed materials by a hot pressing or injection molding mode to form the passive radiating plate.
Comparative example 1
Comparative example 1 a passive radiating plate was made of IIR series rubber, and the manufacturing method was the same as in examples 1 to 6.
Referring to fig. 1, fig. 1 is a schematic diagram showing bass performance of passive radiating panels manufactured according to examples 1 and 4 of the present invention and comparative example 1. The passive radiation plates formed in examples 1 and 4 and comparative example 1 were sampled, and the sound box unit was 10W × 2, and the sound box volume was 280ml, which was used as a test object, to obtain the following test effects:
(1) in the passive radiating panel (a in fig. 1) manufactured in example 1, the low frequency inductance of the sound box can be improved by about 21dB compared with that of comparative example 1(origin) in the range of 60 to 70 Hz.
(2) In the passive radiating panel (B in fig. 2) manufactured in example 4, the low frequency inductance of the sound box can be improved by about 25dB compared with that of comparative example 1(origin) in the range of 60 to 70 Hz.
In summary, the present invention uses a combination of vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and silicone gel in a certain weight percentage to achieve the expected substantial improvement in bass performance of the sound box.
The above detailed description of the preferred embodiments is intended to more clearly illustrate the features and spirit of the present invention, and is not intended to limit the scope of the present invention by the preferred embodiments disclosed above. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims. The scope of the claims to be accorded the invention is therefore to be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is known in the art.

Claims (7)

1. A passive radiating plate is characterized in that the passive radiating plate is made of the following materials:
vinyl terminated dimethylmethylvinyl (siloxane and polysiloxane);
vinyl terminated dimethyl (siloxane and polysiloxane); and
a silicone gel;
wherein the vinyl-terminated dimethyl methylvinyl (siloxane and polysiloxane), the vinyl-terminated dimethyl (siloxane and polysiloxane) and the silicone gel respectively have the following weight percentages: 20-40%, 30-50% and 20-40%.
2. The passive radiating panel of claim 1, wherein the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are, respectively, in weight percent: 28%, 40% and 32%.
3. The passive radiating panel of claim 1, wherein the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are, respectively, in weight percent: 40%, 40% and 20%.
4. The passive radiating panel of claim 1, wherein the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are, respectively, in weight percent: 20%, 50% and 30%.
5. The passive radiating panel of claim 1, wherein the vinyl terminated dimethyl methyl vinyl (siloxane and polysiloxane), vinyl terminated dimethyl (siloxane and polysiloxane), and the silicone gel are, respectively, in weight percent: 30%, 30% and 40%.
6. A method for preparing a passive radiating panel according to any one of claims 1 to 5, comprising the steps of:
uniformly mixing all the materials; and
and molding the mixed material by a hot pressing or injection molding mode to form the passive radiation plate.
7. The method for manufacturing a passive radiating panel according to claim 6, further comprising disposing a weight on the passive radiating panel, wherein the passive radiating panel is mounted on a speaker device.
CN202011081752.7A 2017-11-28 2017-11-28 Passive radiating plate and preparation method thereof Active CN112203208B (en)

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CN107948907B (en) * 2017-11-28 2020-11-27 苏州佳世达光电有限公司 Passive radiating plate and preparation method thereof
CN114933804A (en) * 2022-05-25 2022-08-23 歌尔股份有限公司 Vibrating diaphragm of sound production device, preparation method of vibrating diaphragm and sound production device

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CN104581548A (en) * 2013-10-18 2015-04-29 松下电器产业株式会社 Vibrating diaphragm and loudspeaker using same
US20170006369A1 (en) * 2015-06-30 2017-01-05 W. L. Gore & Associates, Inc. Vibro acoustic cover using expanded ptfe composite
CN107129687A (en) * 2017-05-19 2017-09-05 歌尔股份有限公司 The preparation method of vibrating diaphragm, vibrating diaphragm component and vibrating diaphragm and vibrating diaphragm component

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CN113490129A (en) * 2021-06-30 2021-10-08 歌尔股份有限公司 Vibrating diaphragm for sound production device and sound production device
CN113490129B (en) * 2021-06-30 2023-03-03 歌尔股份有限公司 Vibrating diaphragm for sound production device and sound production device

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CN107948907A (en) 2018-04-20
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