TWI628960B - Audio equipment - Google Patents

Abstract

An acoustic device comprising a structure. The structure comprises a first elastomer layer and a carbon fiber-containing composite layer disposed on the first elastomer layer, the carbon fiber-containing composite layer comprising a thermosetting resin. The acoustic device of the present invention transmits the sound of the structure to a fuller sound, less sound, and improves the signal-to-noise ratio and the low-frequency extension effect.

Description

Audio equipment

The present invention relates to an acoustic device, and more particularly to an acoustic device using a structure having a good resonance effect.

Carbon fiber is a new type of non-metallic material made of organic matrix fiber (such as viscose, polyacrylonitrile or asphalt) by pyrolysis method to remove all elements except carbon under an inert gas with a temperature of 1000-3000 °C. Strong, high specific modulus, fatigue resistance, creep resistance, high temperature resistance to heat resistant steel, corrosion resistance, wear resistance, dimensional stability, electrical conductivity, thermal conductivity, small coefficient of thermal expansion, self-lubrication and energy absorption and shock resistance Excellent performance. Due to the poor impact resistance and high temperature oxidation resistance of carbon fiber, in addition to being used as a thermal insulation material, carbon fiber is rarely used directly, and is often combined with a material such as a resin to form a carbon fiber composite material such as a carbon fiber resin-based composite material.

The carbon fiber resin-based composite material has a high Young's modulus and a large specific modulus, and can be used in a large amount in an acoustic musical instrument. For example, a speaker in an audio device converts an electrical signal into an acoustic signal, and the speaker's cone is an electroacoustic conversion. The key components of the making of the sound basin need to be: lightweight, high rigidity and good resonance. The carbon fiber resin matrix composite can meet the above three conditions and is a good material for making the speaker cone.

However, in the prior art, the acoustic equipment using the carbon fiber resin-based composite material still has the defects that the sound is not full enough, there is a large sound and a small signal-to-noise ratio, and the low frequency extension is poor.

Accordingly, it is an object of the present invention to provide an earphone that can make the sound more full and level, reduce sound, improve signal to noise ratio, and make the low frequency extension effect better.

Thus, the earphone of the present invention comprises a back cover, a structure, a horn and a large cavity shell.

The structure comprises a first elastomer layer, and a carbon fiber-containing composite layer disposed on the first elastomer layer, the carbon fiber-containing composite layer comprising a thermosetting resin. The rear cover abuts the rear end of the large cavity shell, the horn is located at the front end of the large cavity shell, the structure is located in the cavity of the back cover, and the structure body cooperates with the bottom of the back cover to define a The first chamber, the structure cooperates with the horn to define a second chamber.

In addition, another object of the present invention is to provide a speaker that can make the sound more full and level, reduce the sound, improve the signal to noise ratio, and make the low frequency extension effect better.

Thus, the speaker of the present invention comprises a rear wall of a speaker, a structure, a speaker speaker and a large cavity shell.

The structure comprises a first elastomer layer, and a carbon fiber-containing composite layer disposed on the first elastomer layer, the carbon fiber-containing composite layer comprising a thermosetting resin. The speaker speaker is located at a front end of the large cavity body, and the structure is located between the rear wall of the speaker and the speaker speaker, and the rear wall of the speaker cooperates with the structure body to define a speaker first chamber, the structure body Cooperating with the speaker horn to define a second chamber of the speaker.

The effect of the invention is that by improving the structure of the structure, the sound device using the structure has a fuller sound, less sound, and improves the signal-to-noise ratio and the low-frequency extension effect.

1‧‧‧ structure

2‧‧‧First elastomer layer

3‧‧‧Composite layer containing carbon fiber

4‧‧‧Second elastomer layer

5‧‧‧First carbon fiber layer

6‧‧‧Intermediate

7‧‧‧Second carbon fiber layer

11‧‧‧ front cavity shell

12‧‧ Earplugs

13‧‧‧ signal line

14‧‧‧First chamber

15‧‧‧Second chamber

16‧‧‧After the speaker

17‧‧‧Speaker speaker

8‧‧‧Back cover

81‧‧‧ cavity

82‧‧‧Combination

9‧‧‧ Horn

10‧‧‧ Large cavity shell

18‧‧‧ Large cavity shell

19‧‧‧The first chamber of the speaker

20‧‧‧Speaker second chamber

21‧‧‧Protrusions

The other features and advantages of the present invention will be apparent from the embodiments of the present invention. FIG. 1 is a cross-sectional view showing a first embodiment of the structure used in the acoustic device of the present invention; 2 is a schematic cross-sectional view showing a second embodiment of the structure used in the acoustic device of the present invention; and FIG. 3 is a schematic cross-sectional view showing a carbon fiber-containing composite material layer of the second embodiment; A structural diagram illustrating an embodiment of the earphone of the present invention; and FIG. 5 is a schematic structural view showing an embodiment of the speaker of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1, a first embodiment of a structure 1 used in an acoustic device according to the present invention includes a first elastomer layer 2 and a carbon fiber-containing composite material disposed on the first elastomer layer 2. Layer 3, the carbon fiber-containing composite layer 3 comprises a thermosetting resin. The two layers of materials are combined by warming and pressing, and the material in the first elastomer layer 2 is infiltrated into the carbon fiber-containing composite material layer 3 due to warming and pressing.

The first elastomer layer 2 comprises a thermo-elastomer, and the thermoplastic elastomer has elasticity of rubber at normal temperature, and A class of elastomers that are plastically formable at elevated temperatures. Further, the thermoplastic elastomer may be a polyurethane resin or a polyamide resin or the like. The two-layer structure has a good filtering effect on the clutter in the sound.

Referring to FIG. 2, a second embodiment of the structure 1 used in the acoustic device of the present invention is similar to the first embodiment. The main difference is that the second embodiment further includes a a second elastomer layer 4 of the carbon fiber-containing composite material layer 3, the first elastomer layer 2 and the second elastomer layer 4 are respectively disposed on opposite sides of the carbon fiber-containing composite material layer 3, so that the first elastomer layer 2. The carbon fiber-containing composite material layer 3 and the second elastomer layer 4 are sequentially arranged, and the three-layer structure is combined by heating and pressurization.

The first elastomer layer 2, the second elastomer layer 4 and the carbon fiber-containing composite layer 3 are heated and pressurized to make the material in the first elastomer layer 2 and the second elastomer layer 4 The carbon fiber composite layer 3 has infiltration.

The first elastomer layer 2 and the second elastomer layer 4 comprise a thermoplastic elastomer which has elasticity of rubber at normal temperature and a plastic body which is plastically moldable at a high temperature. Further, the thermoplastic elastomer may be a polyurethane resin or a polyamide resin or the like. The entire three-layer structure has a good filtering effect on the clutter in the sound.

The first elastomer layer 2 and the second elastomer layer 4 may each have a thickness of between 0.15 mm and 0.3 mm, and the carbon fiber-containing composite layer 3 may have a thickness of between 0.65 mm and 0.85 mm.

Referring to FIG. 3, the carbon fiber-containing composite material layer 3 includes a first carbon fiber layer 5, an intermediate layer 6, and a second carbon fiber layer 7, which are sequentially arranged, the first carbon fiber. The layer 5 and the second carbon fiber layer 7 each have a thermosetting resin and are bonded to the first elastomer layer 2 and the second elastomer layer 4. The three-layer structure and the first elastomer layer 2 and the second elastomer layer 4 can be bonded by heat and pressure.

The first carbon fiber layer 5 and the second carbon fiber layer 7 may each have a thickness of 0.25 mm, and the intermediate layer 6 may have a thickness of between 0.15 mm and 0.35 mm.

Wherein, the intermediate layer 6 has a continuous carbon fiber yarn, a mixture of boron fiber braid and continuous carbon fiber yarn, a mixture of continuous carbon fiber yarn and p-phenylene terephthalamides (PPTA fibers) or thermoplastic. One of known materials such as an elastomer. The intermediate layer 6 may be entirely of a thermoplastic elastomer material such that the low frequency elongation will be better.

The intermediate layer 6 has one of a continuous carbon fiber yarn, a mixture of a boron fiber braid and a continuous carbon fiber yarn, a mixture of a continuous carbon fiber yarn and a polyparaphenylene terephthalamide fiber, and the fiber is cured by a thermosetting resin. . The first elastomer layer 2, the second elastomer layer 4, and the thermoplastic elastomer may be sheets.

Further, the first carbon fiber layer 5 may be subjected to a weaving process, and the second carbon fiber layer 7 may be woven or unwoven.

Further, the second carbon fiber layer 7 may be subjected to a weaving process, in which case the first carbon fiber layer 5 may be woven or unwoven.

The carbon fiber structure after weaving is relatively neat and not easy to be scattered, and the carbon fiber layer after weaving is regularly arranged to have a good effect of filtering out noise.

In addition, the present invention provides an earphone using the above structure 1, as shown in FIG. 4, which is an embodiment of the earphone. The embodiment includes a back cover 8 defining a cavity 81 and a structure 1. a speaker 9, a large cavity shell 10, a front cavity The shell 11, an earplug 12 and a signal line 13.

The rear cover 8 is in abutment with the rear end of the large cavity shell 10, and the horn 9 is located at the front end of the large cavity shell 10. The structure 1 is located in the cavity 81 of the back cover 8, and the structure 1 is The bottom of the rear cover 8 cooperates to define a first chamber 14, and the structure 1 cooperates with the horn 9 to define a second chamber 15.

The edge of the structure 1 can be adhered and sealed to the inner wall of the back cover 8 through the adhesive in the cavity 81 of the back cover 8. The outer diameter of the rear cover 8 is equivalent to the inner diameter of the large cavity shell 10. The rear cover 8 includes a joint portion 82 that cooperates with the large cavity shell 10, and the joint portion 82 can be inserted into the large cavity shell. 10 rear end, in close contact with the large cavity shell 10.

The embodiment further includes a protrusion 21 disposed on the inner wall of the back cover 8 for stopping the structure 1 to prevent the structure 1 from shaking, and may also be a recess for fixing the structure. The edge of 1.

When the intermediate layer 6 of the carbon fiber-containing composite material layer 3 in the structure 1 is a continuous carbon fiber yarn or a mixture of a continuous carbon fiber yarn and an elastic plastic, the structure 1 has a relatively high hardness, which is produced by the embodiment. The sound is more powerful in the range of the standard sound than the earphone that does not use the structure 1.

When the intermediate layer 6 of the carbon fiber-containing composite material layer 3 in the structural body 1 is an elastic plastic, the hardness of the structural body 1 is relatively soft, and the sound produced by the embodiment is superior to the sound in the subwoofer. The earphone using the structure 1 is excellent in the low-frequency extension, and the effect of reducing the waveform distortion, reducing the sound and the distortion, and reducing the distortion can be achieved regardless of whether the intermediate layer 6 is any of the above materials.

Further, the horn 9 is a moving ring horn or a moving iron horn.

Generally speaking, the moving ring horn is a low frequency horn, and the moving iron horn is a high frequency horn. Pit. Different speakers can be installed according to the sound quality. It is also possible to combine the two types of speakers together in a coaxial or different axis in this embodiment. Generally, the moving ring speaker is closer to the structure 1 and the moving iron speaker. It is farther away from the structure 1 than the moving ring horn.

The present invention also provides a speaker using the above structure 1, as shown in FIG. 5, which is an embodiment of the speaker. The embodiment includes a speaker back wall 16, a structure 1, a speaker speaker 17, and a large cavity. Body shell 18.

The speaker speaker 17 is located at the front end of the large cavity shell 18, and the structure 1 is located between the rear wall 16 of the speaker and the speaker speaker 17. The rear wall 16 of the speaker cooperates with the structure 1 to define a speaker. A chamber 19, the structure 1 cooperates with the speaker horn 17 to define a speaker second chamber 20.

The embodiment further includes a protrusion 21 disposed on the inner wall of the large cavity casing 18 to stop the structure 1 for fixing the thin structure 1 to prevent it from shaking.

When the intermediate layer 6 of the carbon fiber-containing composite material layer 3 in the structure 1 is a continuous carbon fiber yarn or a mixture of a continuous carbon fiber yarn and an elastic plastic, the structure 1 has a relatively high hardness, which is produced by the embodiment. The sound is more powerful in the range of the standard sound than the speaker that does not use the structure 1.

When the intermediate layer 6 of the carbon fiber-containing composite material layer 3 in the structure 1 of the speaker is an elastic plastic, the sound produced by the speaker is expressed in the sound field of the subwoofer than the speaker not using the structure 1. Excellent, low frequency extension is good, and regardless of the intermediate layer 6 is any of the above materials, the waveform distortion reduction, the sound dye reduction and the distortion reduction effect can be achieved.

Further, the speaker speaker 17 is a moving ring speaker or a moving iron speaker.

Generally speaking, the moving ring horn is a low frequency horn, and the moving iron horn is a high frequency horn. Different speakers can be installed according to the sound quality. It is also possible to combine the two types of speakers together in a coaxial or different axis in this embodiment. Generally, the moving ring speaker is closer to the structure 1 and the moving iron speaker. It is farther away from the structure 1 than the moving ring horn.

Further, the speaker horn 17 includes a cone (not shown) made of the structure 1, which can also reduce waveform distortion, reduce sound and reduce distortion.

In summary, by improving the structure of the structure 1, the sound device using the structure 1 is more full, the sound is less, and the signal-to-noise ratio and the low-frequency extension are improved. The object of the invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and the patent specification of the present invention are still It is within the scope of the patent of the present invention.

Claims (10)

An earphone comprising a back cover, a structure, a speaker and a large cavity shell, the structure comprising a first elastomer layer and a carbon fiber-containing composite layer disposed on the first elastomer layer, the The composite layer of carbon fiber comprises a thermosetting resin, the back cover is docked with the rear end of the large cavity shell, the horn is located at the front end of the large cavity shell, the structure is located in the cavity of the back cover, and the structure and the structure The bottom of the back cover cooperates to define a first chamber, and the structure cooperates with the horn to define a second chamber. The earphone of claim 1, wherein the structure further comprises a second elastomer layer disposed on the carbon fiber-containing composite layer, the first elastomer layer and the second elastomer layer being respectively disposed on the carbon fiber-containing layer On the opposite sides of the composite layer, the first elastomer layer, the carbon fiber-containing composite layer and the second elastomer layer are sequentially arranged. The earphone according to claim 2, wherein the carbon fiber-containing composite layer further comprises a first carbon fiber layer, an intermediate layer and a second carbon fiber layer, the first carbon fiber layer and the second carbon fiber. The layers each have a thermosetting resin and are bonded to the first elastomer layer and the second elastomer layer. The earphone of claim 3, wherein the intermediate layer has continuous carbon fiber yarn, a mixture of boron fiber braid and continuous carbon fiber yarn, a mixture of continuous carbon fiber yarn and polyparaphenylene terephthalamide fiber, or thermoplastic elasticity. One of the bodies. The earphone of claim 3, wherein the first carbon fiber layer and the second carbon fiber layer are woven. The earphone of claim 3, wherein the first elastomer layer and the second elastomer layer each have a thickness between 0.15 mm and 0.3 mm, and the carbon fiber-containing composite layer has a thickness between 0.65 mm and 0.85 mm. . The earphone of claim 1, further comprising a protrusion or a recess disposed on the inner wall of the back cover for stopping and fixing the structure. A sound box comprising a speaker back wall, a structure body, a speaker speaker and a large cavity shell, the structure body comprising a first elastomer layer and a carbon fiber-containing composite material layer disposed on the first elastomer layer The carbon fiber-containing composite material layer comprises a thermosetting resin, and the speaker horn is located at a front end of the large cavity body, the structure is located between the rear wall of the speaker and the speaker horn, and the rear wall of the speaker is matched with the structure body A first chamber of the speaker is arranged, and the structure cooperates with the speaker of the speaker to define a second chamber of the speaker. The speaker of claim 8, wherein the structure further comprises a second elastomer layer disposed on the carbon fiber-containing composite layer, the first elastomer layer and the second elastomer layer being respectively disposed on the carbon fiber-containing layer On the opposite sides of the composite layer, the first elastomer layer, the carbon fiber-containing composite layer and the second elastomer layer are sequentially arranged. The speaker of claim 8, wherein the speaker speaker comprises a cone, and the cone comprises a first elastomer layer and a carbon fiber-containing composite layer disposed on the first elastomer layer of the cone. Manufactured, and the carbon fiber-containing composite layer of the cone includes a thermosetting resin.