JP3513600B2 - Speaker - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention, as shown in FIG. 1, includes a voice coil 5 wound around a voice coil bobbin 6 directly connected to a diaphragm 7 and suspended in a magnetic gap 8 of a magnetic circuit 18. To supply audio current from the outside,
As a conductive gold wire wire 4 for electrically conductive power supply, which electrically connects between both winding ends 5a of the voice coil 5 and an external terminal 9 attached to the frame 16 or the like, a plated layer 3 of a conductive metal such as copper is provided on the surface. The present invention relates to a speaker using the high elastic modulus functional organic fiber 2 subjected to.

[0002]

2. Description of the Related Art FIG. 1 is a sectional view of a speaker, in which the upper and lower limits of vibration of a diaphragm 7 are indicated by thick dash-dotted lines, and the upper and lower limits of the motion mode of the conductive gold thread wires 4 and 4 '( The amplitude A) is shown by a thin dash-dotted line. Hereinafter, FIG. 12 is an external view showing the structure of the conductive gold thread wire 4 ′ of the conventional speaker, and FIG. 13 is an enlarged perspective view showing the structure of the copper ribbon wire 12 of the conductive gold thread wire 4 ′ of the conventional speaker. is there. FIG. 14 is an external view showing the structure of an element wire 2b ′ of a conductive gold thread wire 4 ′ obtained by winding a copper ribbon wire 12 around the spun yarn core wire 11 of the conventional example shown in FIGS. 12 and 13, and FIG. FIG. 15 is a partially enlarged cross-sectional view of the speaker showing a mode using the conductive gold thread wire 4 ′ of the conventional example shown in FIGS. 12, 13, and 14. FIG. 16 is an electric impedance curve characteristic diagram showing a Q characteristic of resonance of vibration of a speaker.

A conventional conductive gold thread wire 4'of this kind is shown in FIG.
As shown in FIG. 2 and FIG. 13, a thin metal ribbon 12 made of copper is formed around a wire rod formed by bundling spun yarn of meta-aramid fiber (for example, # 40 twin yarn (40S / 2)) 11 as a core member.
(For example, thickness (t) 0.02mm, width (w) 0.4m
m) is a strand 2b obtained by twisting and winding several strands into a required length (several cm), and
Between the winding end 5a of the voice coil 5 of the speaker shown in FIG. 6 and the input terminal 9 attached to the frame 16 or the like, the diaphragm 7
It is electrically connected by soldering or the like while maintaining an appropriate length with a slack (deflection) that does not suppress the axial vibration of the. In general, the conductive gold thread wire 4'for a speaker with a small input may be used as a single wire as shown in FIG. 12, but when it is used as the conductive gold thread wire 4 for a large input, the resistance value becomes large and the temperature increases. As it may rise and cause wire breakage,
As shown in FIG. 3, the strand 2b is wound around the spun yarn core wire 1 in a round braid 4a. The speaker having such a configuration inputs the electroacoustic signal input from the external amplifier through the input terminal 9 to the voice coil 5 through the conductive gold wire wires 4 and 4 ', and responds to the generated electroacoustic vibration. The vibrating plate 7 is vibrated by the vertical vibration and emits sound.

[0004]

Therefore, the conventional conductive gold wire 4'of this kind vibrates up and down violently along with the vibration of the voice coil 5, and the intermediate point between both ends of the connection vibrates with a large amplitude. In a single-wire conductive gold yarn wire 4'using a flat rectangular copper ribbon wire 12 having a cross section as shown in FIGS. 12 and 13, the copper ribbon wire 12 is braided with the core wire of the spun yarn 11. Since it is in a free state just wrapped around the outside, stress concentrates due to vibration, metal fatigue overlaps and cracks, and the fragile wire breaks in a short period of time, leading to disconnection, which is a drawback There was a problem that it is easy to cause.

Further, the conductive gold thread wire 4'as described above is poor in resistance to repeated bending, is liable to resonate at a specific frequency due to its weak rigidity, and has a large amplitude (A) in the middle portion for vibration at both ends. It is easy to cause a so-called "rope jump phenomenon"
It has the drawback of being easy to cut (having a large resonance Q value). In particular, the connection roots at both ends, the connection end on the voice coil 5 side and the connection end of the input terminal 9 (the arrow in FIG. 1)
However, since a severe bending stress repeatedly acts on a narrow area, there is a problem that the wire is easily broken. Further, since several copper ribbon wires 12 are braided, the weight becomes large, the load balance with the vibration plate 7 is easily lost due to vibration, and rolling motion due to torsion is easily caused, so that vibration distortion due to resonance is caused. There was also a problem that it would cause distortion sound.

Therefore, in order to solve the problem of the conductive gold thread wire 4'braided with the conventional copper ribbon wire 12 in the present invention, the appearance of the conductive gold thread wire 4 used in the speaker of the present invention is solved. 2 and FIG. 3 showing the cross section of the configuration of the conductive gold thread wire 4 used in the speaker of the present invention, the spun yarn is used as the core wire 1 and its outer periphery is subjected to water resistant processing (for example, Toray DuPont). High elasticity (like Kevlar fibers manufactured by the company)
A bundle of conductive wires 2a which surrounds the rate-functional organic fiber 2 and further has a plated layer 3 of a conductive metal such as copper or silver on the surface thereof to endure bending fatigue over a long period of time and reduce the weight. A speaker using a conductive gold thread wire 4 for power supply, which can be reduced in weight, has high rigidity, and is coated with wax 3a on the outside as shown in FIG. 6 to prevent metal fatigue, and has excellent corrosion resistance. It is the one we are trying to provide. The core wire 1
May be in filament form. Further, the present invention is
FIG 2, is not provided with a core 1 of the spun yarn as shown in FIG. 3, FIG. 4 the conductive wires 2a of plated layer 3 of conductive metal in a high modulus function organic fibers 2 of the surface was a bundle, A speaker using the conductive gold thread wire 4 formed by FIG. 5 is provided. The conductive wire 2a may be one in which a conductive plating layer 3 is applied to the surface of the high elastic modulus functional organic fiber 2 and the like, and further water resistant processing is applied.

In the speaker shown in FIG. 1, reference numeral 16 is a molded frame, which is integrally molded with a pair of input terminals 9 and a magnetic circuit 18 made of a magnetic material. The magnetic circuit 18 includes the plate 13 attached to the frame 16.
And an annular magnet 14 attached to the bottom of the
A yoke 15 attached to the lower surface of the magnet 14,
It is composed of a central magnetic pole 17 attached to the center of the yoke 15, and 8 is a magnetic air gap formed between the plate 13 and the central magnetic pole 17, and the upper end of the magnetic air gap 8 is fixed to the diaphragm 7. The voice coil 5 is wound around the voice coil bobbin 6 and both ends thereof are connected to the input terminal 9. The voice coil 5 is suspended and held in the magnetic gap 8 by mounting the outer peripheral portion of the damper 10 attached to the diaphragm 7 and the bobbin 6 on the frame 16.

The speaker configured as described above transmits the electroacoustic signal input from the input terminal 9 to the conductive gold wire 4,
4 ', the electromagnetic induction vibration generated in the voice coil 5 is input to the voice coil 5 and transmitted to the diaphragm 7 for sound emission.

[0009]

A first invention is a tensile modulus of elasticity.
Is 25N (Newton) / Tex or more, tensile strength is 1N
/ Tex or more, limiting oxygen index 25 (%) or more, thermogravimetric
High elastic modulus function with thermal decomposition temperature of 400 ℃ or higher
A speaker in which a conductive gold thread wire 4 is formed by using a conductive wire 2a in which a conductive metal plating layer 3 is provided on the surface of an organic fiber 2 and a winding end 5a of a voice coil 5 and an input terminal 9 are electrically connected. Is. FIG. 7 shows a schematic diagram of an example of the structure of the circular punched product 4a, and FIG. 8 shows the conductive wire 2a of the conductive gold thread wire 4.
The appearance of an embodiment of an element wire 2b obtained by braiding a core braid in the shape of a round braid 4a is shown in FIG. 9 in which the conductive wire 2a of the conductive gold thread wire 4 is braided in the shape of a round braid 4a having the core 1. The appearance of the example of the wire 2b is shown. FIG. 10 is an external view of the conductive gold thread wire 4 of the present invention, and FIG. 11 is a partially enlarged sectional view of a speaker using the conductive gold thread wire 4 of the present invention.

The second invention has a tensile modulus of 25 N (new
Ton) / Tex or more, tensile strength is 1 N / Tex or more, limit
Field oxygen index is 25 (%) or more, heat content by thermogravimetry
A structure formed by combining a plurality of conductive wires 2a having a surface of a high elastic modulus functional organic fiber 2 having a melting temperature of 400 ° C. or higher with a conductive metal plating layer 3 into a cylindrical and round punched structure 4a. This is a speaker in which the winding end 5a of the voice coil 5 and the input terminal 9 are electrically connected by using the wire 2b used as the outer circumference of the wire 2b or the conductive wire 4 formed into a twisted thread shape.

According to a third aspect of the present invention, a spun yarn or the like is used as the core wire 1 and a tensile elastic modulus surrounding the core wire is 25 N (new nut).
) / Tex or more, tensile strength 1N / Tex or more, limit
Oxygen index 25% or more, pyrolysis by thermogravimetry
A braid element formed by combining a plurality of conductive wires 2a having a surface of a high elastic modulus functional organic fiber 2 having a temperature of 400 ° C. or more with a plated layer 3 of a conductive metal into a cylindrical and round punched braid 4a. The wire 2b is a speaker in which the winding end 5a of the voice coil 5 and the input terminal 9 are electrically connected to each other by using a gold thread wire braid used for the outer circumference or a conductive gold thread wire 4 in the form of a twisted thread.

The fourth invention has a tensile modulus of 25 N (new
Ton) / Tex or more, tensile strength is 1 N / Tex or more, limit
Field oxygen index is 25 (%) or more, heat content by thermogravimetry
A conductive wire 2a having a high elastic modulus functional organic fiber 2 having a melting temperature of 400 ° C. or higher and a conductive metal plating layer 3 applied to the surface thereof, and a conductive wire 2a ′ having a corrosion-resistant treatment such as wax 3a applied to the surface thereof. The speaker according to any one of the first to third inventions, wherein the winding end 5a of the voice coil 5 and the input terminal 9 are electrically connected by using the speaker.

A fifth aspect of the present invention is the high elastic modulus functional organic fiber 2 described above.
Is a speaker according to any one of the first to fourth inventions, which is a para-aramid fiber. (Note that in the following sentences
Tensile modulus is 25N (Newton) / Tex or more, tensile strength
Degree of 1N / Tex or more, limiting oxygen index of 25 (%) or less
Above, the thermal decomposition temperature by thermogravimetry is higher than 400 ℃
The elastic modulus functional organic fiber 2 is simply the high elastic modulus functional organic fiber 2
Is abbreviated. )

The first to fifth inventions of the present invention relate to a speaker using the conductive gold thread wire 4 having such a structure as shown in FIG.
As in the case of the conductive gold thread wire 4'of the copper foil ribbon wire 12 of the conventional speaker shown in FIG. 1, the both ends thereof are used by electrically connecting the winding end 5a of the voice coil 5 and the input terminal 9 to each other. To be Therefore, in the manufacturing process of the present invention, the conductive gold thread wire 4 can be connected as in the conventional speaker manufacturing process. As a result, the speaker is not only convenient for the production by the automatic assembly process without changing the manufacturing equipment and the process, but also improves the quality of the speaker such as the extension of the life of the conductive gold wire 4, the vibration characteristics, and the influence on the diaphragm. Can be achieved.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A speaker having a structure of the present invention for achieving the object will be described with reference to the drawings corresponding to the embodiments. FIG. 1 is a cross-sectional view of a general speaker in which a diaphragm 7 of the speaker is at the front. The mode of the diaphragm when it protrudes to the back and the mode when it retracts to the rear are shown by thick dash-dotted lines, respectively, and the accompanying movement of the vibration when the conductive gold wire wire 4 protrudes forward, and the vibration of the diaphragm 7 to the rear. The vibrational movements of the conductive gold thread wire 4 during the retracted piston movement are shown by thin chain lines. FIG. 2 shows a core material 1 used in the speaker of the third invention.
Comprising a high plated layer 3 of conductive metal on the outer periphery thereof
It is a figure which shows the external appearance of the strand 2b which forms the conductive gold | metal | money wire | line 4 which wound by surrounding the elastic modulus function organic fiber 2 in the round braid 4a shape, and was surrounded. FIG. 3 is an enlarged cross-sectional view of the wire 2b forming the conductive gold thread wire 4 shown in FIG.

FIG. 4 is a view showing the outer appearance of the wire 2b forming the conductive gold thread wire 4 having no core wire. FIG. 5 is an enlarged cross-sectional view of a wire 2b forming the conductive gold thread wire 4 having no core wire shown in FIG. FIG. 6 shows a high-level structure obtained by applying a conductive metal plating layer 3 to the outer circumference of the core wire 1 of the third invention shown in FIG.
It is a figure which shows the cross section of the structure of the strand 2b which performed the wax process 3a on the further outer surface of the electroconductive gold- filament wire 4 which surrounds the elastic modulus function organic fiber 2. FIG. 7 shows a round braid 4a of the wire 2b.
FIG. 3 is a schematic view showing an appearance of an example of the structure of FIG. FIG. 8 is a schematic diagram showing the appearance of a wire 2b in which the conductive wire 2a of the conductive gold thread wire 4 is braided into a round braid 4a having no core wire. Figure 9
FIG. 2 is a schematic diagram showing an appearance of a wire 2b in which a conductive wire 2a of a conductive gold thread wire 4 is braided into a circular braid 4a having a core wire 1. FIG. 10 is an external view of the conductive gold thread wire 4 used in the present invention. FIG. 11 is a partially enlarged sectional view of a speaker using the conductive gold thread wire 4 of the present invention.

12 to 15 are views of a conventional conductive gold wire 4'and a speaker, respectively. FIG. 12 shows a conductive gold wire 4'in which a copper ribbon 12 is wound around a spun yarn core 11 of a conventional example. FIG. 13 is an enlarged perspective view showing the structure of the strand 2b ′ of FIG.
FIG. 14 is a diagram showing the dimensions of the copper ribbon 12 shown in FIG.
Is an external view showing the structure of a conductive gold yarn wire 4'in which a copper ribbon 12 is wound around a spun yarn core wire 11 of a conventional example shown in FIGS. 12 and 13, and FIG. 15 is a conventional view shown in FIGS. It is a partially expanded sectional view of a speaker using an example conductive gold thread wire 4 '.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 2 and 3, the conductive gold thread wire 4 used in the speaker of the present invention surrounds the core material 1 of the heat resistant fiber and the high elastic modulus functional organic fiber 2 having the surface coated with the conductive metal plating layer 3. Further, since it is the conductive gold thread wire 4 formed by surrounding a bundle of conductive wires 2a having a plated layer 3 of a conductive metal such as copper or silver on the surface thereof, the vibrating plate 7 is strong, It has suitable characteristic rigidity and repeated bending resistance against vibration of large amplitude.

The high elastic modulus functional organic fiber means a tensile elastic modulus of 25 N (Newton) / Tex or more, a tensile strength of 1 N / Tex or more, a limiting oxygen index of 25 (%) or more, and a thermogravimetric method. An organic fiber having a decomposition temperature of 400 ° C. or higher. The tensile modulus of the fiber is JIS L 1013.
It is the initial tensile resistance as shown in the chemical fiber filament test method. Here, the term "tensile modulus" used in the field of functional fibers is used. High elastic modulus organic fibers include
Para-aramid fiber, wholly aromatic polyester (Kuraray Co., Ltd. trade name, Vectran), polyparaphenylene benzobisoxazole fiber (Toyobo Co., Ltd. trade name,
Zylon) etc. Para-aramid fibers include polyparaphenylene terephthalamide fiber (trade name, Kevlar manufactured by Toray-Dupont Co., Ltd.), and copolyparaphenylene-3,4'-oxydiphenylene terephthalamide fiber (Teijin ) Product name, Technora) etc.

Among them, para-aramid fiber is preferable because of its high tensile modulus and flexibility, and further, it has a high limiting oxygen index which is an index of heat resistance and incombustibility,
Further, polyparaphenylene terephthalamide fiber is more preferable because it is easy to apply a metal plating layer . Also, high elastic modulus
The functional organic fiber 2 is preferably a filament (long fiber) which is more continuous than the spun yarn in order to maintain good conductivity when a plated layer is applied.

The core wire 1 may be spun yarn or filament (long fiber), but has a limiting oxygen index of 25 or more,
A heat resistant fiber having a thermal decomposition temperature of 400 ° C. or higher by a thermogravimetric method is desirable. For example, the heat-resistant fiber has a limiting oxygen index of 29 (%) and a meta-aramid fiber having a thermal decomposition temperature starting temperature of 430 ° C. measured by a thermogravimetric method (a product name by DuPont).
Nomex, Teijin Ltd. product name, Conex) is preferred. Further, as shown in FIG. 4, there is also a conductive gold thread wire 4 having no core wire.

As described above, the high elastic modulus functional organic fiber 2 is
Since it has a high rigidity (elastic modulus), excellent flex resistance, and is processed to enhance its affinity with metals, it is possible to apply a plating layer 3 of a conductive metal such as copper to the surface to ensure close contact. Since it adheres and fuses with a sufficient degree of fusion, the plated layer 3 of a conductive metal such as copper is not peeled off or cracked to cause breakage. However, it is useful for improving durability.

That is, the plated layer 3 of a conductive metal such as copper
Since the conductive wire 2a having a very low electric resistance and a high electric conductivity can be maintained by maintaining a certain thickness, the conduction loss of the input can be reduced, so that the radiation efficiency of the speaker can be improved. Since the conductive gold thread wire 4 having such a configuration is light in weight and strong in rigidity, the resonance phenomenon due to the amplitude of the speaker is unlikely to occur, and
Since it has excellent repetitive bending property, it is not easily affected by the vibration of the diaphragm 7 of the speaker having a large amplitude, and the vibration of the diaphragm 7 is not irregularly suppressed or distorted.

Then, as in the fourth invention whose sectional structure is shown in FIG. 6, by further applying a wax 3a on the plated layer 3 of conductive metal such as copper for coating the conductive gold thread wire 4, Abrasion resistance increases, chemical resistance, gas corrosion resistance, moisture resistance, etc. can be imparted to the speaker, and a speaker excellent in weather resistance and water resistance can be realized.

The performance of one example of the high elastic modulus functional organic fiber 2 is shown in Table 1 below. The fibers used are para-aramid fibers manufactured by Toray DuPont Co., Ltd.
Kevlar 29) Total fineness 22 tex, Single yarn fineness 0.17
Tex multifilament yarn. The evaluation method is
By the following method. Tensile strength / tensile modulus (initial tensile resistance) / JIS L
1013 Chemical fiber filament test method Limiting oxygen index / JIS K 7201 Combustion test method for polymer materials by oxygen index method. Thermal decomposition point-JIS K 7120 Thermogravimetric measurement method for plastics. Specific gravity JIS L 1013 Chemical fiber filament test method. The thickness (Tex) of the fiber is JIS L 0101
Expressed according to the Tex method.

[Table 1]

The physical properties of the conventional conductive gold yarn wire 4'and the conductive gold yarn wire 4 using the para-aramid fiber (Kevlar) of the present invention are shown in Table 2 below.

[Table 2]

Although the examples considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these examples, and has the above-mentioned constitutional requirements referred to in the present invention, and The present invention can be carried out by appropriately modifying it within a range that achieves the object of the present invention and has the following effects.

[0028]

As is apparent from the above description, the speaker of the present invention has filaments, which are long fibers , or spun yarns, as core wires, and the outer periphery thereof has a high elastic modulus functional organic material.
The conductive gold wire is a speaker in which the winding end of the voice coil and the input terminal are electrically connected to each other by using a conductive gold wire with a structure in which a plated thread with a conductive metal plating layer is arranged on the outer surface of the fiber is electrically connected. Even if the vibration vibrates violently with the vibration plate and the voice coil and stress is partially concentrated and metal fatigue is overlapped, it is difficult to crack, break, and become non-conductive due to the high rigidity and tensile strength. Absent. Connected with the root portion at both ends of the conductive tinsel wire, the voice coil side of the connecting end input terminal
Even with respect to the portion where the severe bending stress repeatedly acts on the side connection end (the arrow portion in FIG. 1), the accompanying damage is unlikely to occur. Further, since the conductive gold thread wire used in the present invention has high rigidity (holding capacity), as shown in FIG. 1, the resonance phenomenon due to the vibration amplitude of the diaphragm is unlikely to occur, and so-called "rope jump phenomenon" is unlikely to occur. Becomes

Further, since the weight is small, the load balance with the vibrating diaphragm is normally maintained, and the rolling motion due to the torsion is hard to occur, so that the speaker does not cause the vibration distortion to cause the distorted sound. Has a remarkable effect.

[Brief description of drawings]

[1] a sectional view of a general speaker, and aspects of the diaphragm when the diaphragm of the speaker is projected forwardly, respectively bold one-dot chain line a mode when retracted rearwardly, The conductive tinsel wires associated therewith Of the vibration when it protrudes to the front of
The movement of vibration of the conductive gold thread wire during the piston movement when retracted rearward is shown by a thin chain line.

FIG. 2 includes a core material used for the speaker of the third invention,
It is a figure which shows the external appearance of the strand which forms the electroconductive gold-filament wire which wound the high elastic modulus function organic fiber which plated the electroconductive metal on the outer periphery in the shape of a round braid | wound, and was surrounded.

FIG. 3 is a diagram showing an enlarged cross section of an element wire forming the conductive gold thread wire shown in FIG.

FIG. 4 is a diagram showing an appearance of a wire forming a conductive gold yarn wire having no core wire.

FIG. 5 is an enlarged cross-sectional view of an element wire forming a conductive gold thread wire without the core wire shown in FIG.

FIG. 6 is a view of the core wire of the third invention shown in FIG. 2 in which a conductive metal plating is applied to the outer periphery of the core wire, and a conductive gold yarn wire surrounding a high elastic modulus functional organic fiber is further treated with wax on the outer surface. It is a figure which shows the cross section of a structure.

FIG. 7 is a schematic view showing an appearance of an example of a structure of a round braided wire.

FIG. 8 is a schematic view showing an appearance of a wire obtained by braiding a conductive wire of a conductive gold thread wire into a round braided shape without a core wire.

FIG. 9 is a schematic view showing an appearance of a wire obtained by braiding a conductive wire of a conductive gold thread wire into a round braided shape including a core wire.

FIG. 10 is an external view of a conductive gold yarn wire of the present invention.

FIG. 11 is a partially enlarged cross-sectional view of a speaker using the conductive gold thread wire of the present invention.

FIG. 12 is an enlarged perspective view showing a structure of an element wire of a conductive gold yarn wire in which a copper ribbon is wound around a spun yarn core wire of a conventional example.

13 is a diagram showing the dimensions of the copper ribbon shown in FIG.

FIG. 14 is an external view showing the structure of a conductive gold yarn wire formed by winding a copper ribbon around the spun yarn core wire of the conventional example shown in FIGS.

FIG. 15 is a partially enlarged cross-sectional view of a speaker using the conductive gold thread wire of the conventional example shown in FIGS. 12, 13 and 14.

FIG. 16 is an electric impedance curve characteristic diagram showing a Q characteristic of resonance of vibration of a speaker.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Core wire 2 High elastic modulus function organic fiber 2a Conductive wire or bundle of conductive wires 2a 'Conductive wire 2b, 2b' with wax treatment 3 Conductive metal plating layer 3a Wax layer 4, 4'Conductive gold wire 4a Round braid 5 Voice coil 5a Voice coil winding end 6 Voice coil bobbin 7 Vibration plate 8 Magnetic gap 9 Input terminal 10 Damper 11 Meta-type aramid fiber or spun yarn 12 Copper ribbon wire 13 Plate 14 Magnet 15 Yoke 16 Frame 17 Central magnetic pole 18 Magnetic circuit

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takeshi Hatano 1-5-6 Nihonbashihonmachi, Chuo-ku, Tokyo Toray DuPont Co., Ltd. (56) Reference JP-A-10-101938 (JP, A) JP Hei 3-260168 (JP, A) Actual development Sho 57-88400 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04R 9/04 103 D06M 11/83 C23C 18/16

Claims (5)

(57) [Claims] 1.Tensile elastic modulus of 25 N / Tex or more, tensile
Strength of 1N / Tex or more, limiting oxygen index of 25 (%) or less
Above, the thermal decomposition temperature by thermogravimetry is higher than 400 ℃
Elastic modulus functional organic fiberConductive metal plating on the surface of (2)layer
Conductive gold thread wire (4) with conductive wire (2a) sheathed (3)
None, between winding end (5a) of voice coil (5) and input terminal (9)
A speaker that is electrically connected to. 2.Tensile elastic modulus of 25 N / Tex or more, tensile
Strength of 1N / Tex or more, limiting oxygen index of 25 (%) or less
Above, the thermal decomposition temperature by thermogravimetry is higher than 400 ℃
Elastic modulus functional organic fiberConductive metal plating on the surface of (2)layer
Circle by combining multiple conductor wires (2a) with (3) sheathed
TubularandBraided strands (2b) organized in a circular braid (4a)
Is a braided wire or a twisted thread that is used on the outer circumference.
Winding the voice coil (5) with the conductive gold wire (4)
A speaker with an electrical connection between the end (5a) and the input terminal (9). 3. A core wire (1) made of spun yarn or the like and surrounding the core wire (1).
To wind aroundTensile elastic modulus of 25 N / Tex or more, tensile strength
Degree of 1N / Tex or more, limiting oxygen index of 25 (%) or less
Above, the thermal decomposition temperature by thermogravimetry is higher than 400 ℃
Elastic modulus functional organic fiberConductive metal plating on the surface of (2)layer
Cylindrical shape by combining multiple conductive wires (2a) with (3)And
OneThe braid element wire (2b) organized in a round punched braid (4a) is
Braided braid or twisted wire used forhandThread-shaped guide
Use the wire wire (4) and the winding end (5a) of the voice coil (5).
A speaker with an electrical connection between the input terminals (9). 4. The conductive wire (2a) is further connected to the winding end (5a) of the voice coil (5) by using a conductive wire (2a ') whose surface is subjected to a corrosion resistance treatment such as wax (3a). 4. The speaker according to claim 1, wherein the terminals (9) are electrically connected. 5. The speaker according to claim 1, wherein the high elastic modulus functional organic fiber (2) is a para-aramid fiber.