JP2006210186A - Wire, conductive wire, and electric equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide with a speaker device which conducts current well. <P>SOLUTION: The speaker device 100 is provided with a lead wire 500, formed by mutually twisting a left-twisting lead-wire 520 in which a foil wire 502 is spirally formed in counterclockwise and a right twisting lead-wire 530 in which a foil wire 502 is spirally formed clockwise. According to this, when the lead wire 500 is vibrated in a magnetic field, because induced current generated in the left-twisting lead-wire 520 and induced current generated in the right-twisting lead-wire 530 can be canceled, the current value of the induced current generated in the lead wire 500 is reduced. Furthermore, because stress from the outside can be dispersed in different directions as for the left-twisting lead-wire 520 and the right-twisting lead-wire 530, the strength of the lead wire 500 can be made stronger. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a conducting wire, a conducting wire, and an electrical device that conduct current.

  Conventionally, a lead wire that is excellent in corrosion resistance and toughness, flexible, and resistant to stress is known as a lead wire that conducts current (see, for example, Patent Document 1). The lead wire described in Patent Document 1 is formed by twisting a plurality of stainless fine wires to form a twisted wire, and further twisting a plurality of sets of these twisted wires. The lead wire is constituted by twisting together a plurality of pairs of twisted wires made of a plurality of fine stainless wires and a plurality of sets of copper foil yarns obtained by winding a copper foil around a core yarn.

Japanese Utility Model Publication No. 5-76195 (see pages 4 to 5, see FIGS. 2 and 3)

  By the way, a lead wire as described in Patent Document 1 may be disposed near a magnetic generation source such as a speaker, for example, and may be affected by a magnetic field. In particular, when a lead wire is disposed in a device that vibrates like a speaker, an induced current may be generated due to the vibration of the lead wire in a magnetic field. Thus, in the conventional lead wire as described in Patent Document 1, there is a problem that the current value may increase or decrease due to the induced current.

  In view of these points, an object of the present invention is to provide a conductive wire, a conductive wire, and an electrical device that can obtain stable characteristics.

  According to the first aspect of the present invention, the first conductive wire in which the conductive wire is linearly formed in a predetermined spiral direction, and the conductive wire in the spiral direction opposite to the first conductive wire. And a second conductive wire formed in a linear shape.

  The invention described in claim 7 is a conductive wire characterized in that a plurality of the conductive wires according to any one of claims 1 to 6 are twisted together.

  The invention according to claim 8 is a conductive wire characterized in that a plurality of the conductive wires according to any one of claims 1 to 6 are braided.

  According to a ninth aspect of the present invention, there is provided an electric device main body that generates a magnetic field, and the conductive wire according to any one of the first to sixth aspects, or the seventh or eighth aspect, which is disposed in the magnetic field generated by the electric device main body. An electrical device comprising the conductive wire described in 1. above.

  According to a tenth aspect of the present invention, there is provided an electric device main body that vibrates due to vibration, and the electric wire according to any one of the first to sixth aspects, or the conductive wire according to the seventh or eighth aspect, wherein power is supplied to the electric device main body. And an electric device characterized by comprising:

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment mode, the structure of the speaker including the lead wire of the present invention is described as an example. However, the present invention is not limited to this, and other electrical devices including a lead wire can be used.

  FIG. 1 is a schematic diagram schematically showing a speaker device according to the present embodiment. FIG. 2 is a cross-sectional view schematically showing the speaker body. FIG. 3 is a schematic diagram of the configuration of the lead wire. FIG. 4 is a longitudinal sectional view of the lead wire. FIG. 5 is a longitudinal sectional view of the basic conductor. FIG. 6 is a schematic diagram showing the configuration of the left twisted conductor and the right twisted conductor.

[Configuration of speaker device]
In FIG. 1, reference numeral 100 denotes a speaker device as an electric device. The speaker device 100 is connected to an audio reproduction device such as an audio device, and outputs audio signals input from the reproduction device. The speaker device 100 includes a housing 200, a terminal portion 300, a speaker main body 400 as an electric device main body, and the like.

  The housing 200 is a member that forms the exterior of the speaker device 100. The housing 200 is formed in a rectangular box shape having a hollow inside. A speaker window (not shown) that connects the internal cavity and the external space is formed on one surface side of the housing 200. A terminal window (not shown) that connects the internal cavity and the external space is formed at the lower end of the side opposite to the one side where the speaker window of the housing 200 is formed. And the terminal part 300 is being fixed to the terminal window part, and the speaker main body 400 is being fixed to the speaker window part. These terminal portion 300 and speaker body 400 are electrically connected by a lead wire 500 as a conductive wire. Furthermore, a sound absorbing material such as glass wool that prevents the sound output from the speaker main body 400 from reflecting in the housing 200 is provided inside the housing 200.

  The terminal unit 300 is connected to an audio playback device such as an audio device such as a stereo device or an amplifier or an AV (Audio-Visual) device such as a television installed outside the speaker device 100. Then, the audio signal input from these audio reproduction devices is output to the speaker main body 400 via the lead wire 500.

  The speaker body 400 is fixed from the inside of the housing 200 to the outside, and converts the audio signal input from the lead wire 500 into sound and outputs the sound. As shown in FIG. 2, the speaker body 400 includes a frame 410, a magnetic body 420, a voice coil 430, a diaphragm 440, and the like.

  The frame 410 is formed in a substantially ring shape from a metal material such as a steel plate or a resin material such as a thermoplastic synthetic resin.

  The magnetic body 420 includes a magnet 421, a yoke plate 422, a yoke 423, and the like. A magnet 421 is disposed between the yoke plate 422 and the yoke 423, and a magnetic gap having a predetermined gap size is formed between the yoke plate 422 and the yoke 423. A magnetic field is formed around the speaker body 400 by the magnetic body 420.

  The voice coil 430 includes a cylindrical coil bobbin 431 made of, for example, a synthetic resin, and a coil 432 wound around a wire rod around the outer peripheral surface of the coil bobbin 431. In the voice coil 430, one end of the coil bobbin 431 in the axial direction is integrally attached to the diaphragm 440 with an adhesive or the like. The voice coil 430 is vibrated by passing a current corresponding to the audio signal through the coil 432, and the vibration is transmitted to the diaphragm 440.

  The vibration plate 440 has a curved vibrating portion 441 at substantially the center. An edge portion 442 that is curved in a curved shape in the same direction as the vibration portion 441 is formed at the periphery of the vibration portion 441 in a series. Further, the outer peripheral edge of the edge portion 442 is assembled to the frame 410. The vibration plate 440 outputs the sound toward the external space when the vibration of the voice coil 430 is transmitted to the vibration unit 441 and vibrates.

  As described above, the lead wire 500 is connected to the terminal unit 300 and the speaker body 400. As shown in FIGS. 3 and 4, the lead wire 500 is formed by twisting basic conducting wires 510 as four conducting wires.

  The basic conductor 510 is formed by twisting a left twisted conductor 520 as a first conductive wire and a right twisted conductor 530 as a second basic conductor. As shown in FIG. 5, the basic conducting wire 510 is configured so that the left twisted conducting wires 520 and the right twisted conducting wires 530 are symmetric with respect to the center point G when viewed in cross section. Further, diagonal lines connecting the left twisted conductors 520 are orthogonally arranged so that the center points of the left twisted conductor 520 and the right twisted conductor 530 substantially coincide with the apex of a substantially square centered on the center point G of the basic conductor 510. Is done. That is, the basic conducting wire 510 is such that the distance from the center point G to each of the left twisted conducting wire 520 and the right twisted conducting wire 530 is substantially the same, and the left twisted conducting wires 520 and the right twisted conducting wires 530 sandwich the center point G. It is preferable that the so-called star-shaped quad structures are arranged so as to face each other.

  In addition, although the example which uses the left-handed twisted wire 520 and the right-handed twisted wire 530 as a star-shaped quad structure was shown here, for example, one left-handed twisted wire 520 and one right-handed twisted wire 530 are connected. The structure may be a twisted pair, or a structure in which a large number of left twisted conductors 520 and right twisted conductors 530 are twisted together. However, the number of the left twisted conducting wire 520 and the right twisted conducting wire 530 to be twisted should be the same.

  Further, when the lead wire 500 is formed using such a basic conducting wire 510, as shown in FIG. 4, when the lead wire 500 is viewed in cross-section, it is disposed on the opposing side of the opposing basic conducting wires 510. It is preferred that the lines are of the same type. That is, when the basic conducting wire 510a and the basic conducting wire 510c and the basic conducting wire 510b and the basic conducting wire 510d are opposed to each other, the right twisted conducting wire 530 is disposed on the basic conducting wire 510c side of the basic conducting wire 510a and the basic conducting wire 510c on the basic conducting wire 510a side. The left twisted conductor 520 is arranged on the basic conductor 510d side of the basic conductor 510b and the basic conductor 510b side of the basic conductor 510d. That is, two left twisted conductors 520 and two right twisted conductors 530 are arranged at the center position of the lead wire 500.

  As shown in FIG. 6, the left twisted conductor 520 includes a core wire 501 as a shaft member, a foil wire 502 as a conductive wire member, and the like. The core wire 501 is disposed substantially on the central axis of the left twisted conductive wire 520. The core wire 501 is formed of an insulating material such as cotton yarn or aramid fiber, for example. The foil wire 502 is formed in a substantially strip shape using a conductive material such as copper, a copper alloy wire, or stainless steel. And the left twisted conducting wire 520 is comprised by forming the foil wire 502 in the shape of a predetermined spiral. That is, for example, when the direction connected to the terminal portion 300 in FIG. 6 is the A direction and the direction connected to the speaker main body 400 is the B direction, the left-hand stranded conductor 520 extends from the A direction to the B direction. Toward, it is formed by being wound while spiraling counterclockwise along the peripheral surface of the core wire 501. The foil wire 502 is wound around the core wire 501 so that the winding interval is close, and substantially covers and hides the core wire 501.

  The right stranded conducting wire 530 includes a core wire 501, a foil wire 502, and the like, similar to the left stranded conducting wire 520. The core wire 501 is disposed on the substantially central axis of the right-hand stranded conductor 530. The core wire 501 is formed of an insulating material such as cotton yarn or aramid fiber, for example. The foil wire 502 is formed in a substantially strip shape using a conductive material such as copper, a copper alloy wire, or stainless steel. And the right twisted conducting wire 530 is comprised by forming the foil wire 502 in the shape of a predetermined spiral. That is, the right-hand stranded conductor 530 is formed by winding the foil wire 502 spirally clockwise along the peripheral surface of the core wire 501 from the A direction to the B direction in FIG. The foil wire 502 is wound around the core wire 501 so that the winding interval is close, and substantially covers and hides the core wire 501.

  The foil wire 502 may be wound with a predetermined gap. Furthermore, although the foil wire 502 is substantially band-shaped, it may be, for example, a wire with a circular cross section, or may have another shape. Furthermore, the surface of the foil wire 502 may be coated with an insulating coating material such as enamel, a coating layer such as a synthetic resin, or the like, or may be uncoated.

[Operation of speaker device]
{Lead wire induced voltage}
Next, the induced voltage generated in the lead wire 500 due to the magnetic field generated from the speaker main body 400 of the speaker device 100 and the vibration of the speaker main body 400 will be described. Here, an experiment was performed in which the induced voltage generated in the lead wire 500 connected to the speaker main body 400 was measured with a measuring device using various lead wires and compared and evaluated. As an experiment for measuring this induced voltage, a measuring apparatus as shown in FIG. 7 was used. FIG. 7 is a schematic view schematically showing a measuring apparatus that measures the induced voltage generated in the lead wire 500.

  A measuring apparatus 600 shown in FIG. 7 includes a vibration transmission rod 610, an actuator 620, a power amplifier 630, and an FFT (Fast Fourier Transform) analyzer 640 on a diaphragm 440 of the speaker body 400.

  The vibration transmission rod 610 transmits the vibration of the diaphragm 440 to the actuator 620. Then, an actuator 620 is attached to the tip of the vibration transmission rod 610, and an electric signal corresponding to the magnitude of vibration transmitted from the vibration plate 440 by the vibration transmission rod 610 is generated by the actuator 620. The power amplifier 630 is electrically connected to the actuator 620 and the FFT analyzer 640. The power amplifier 630 amplifies the electrical signal generated by the actuator 620 and outputs the amplified signal to the FFT analyzer 640. The FFT analyzer 640 analyzes the electric signal input from the power amplifier 630 and measures the magnitude of vibration of the diaphragm 440 of the speaker device 400. Then, a measurement lead wire to be measured for measuring the induced voltage is attached to the diaphragm 440 of the speaker body 400.

  As a measurement lead wire attached to the diaphragm 440, the lead wire 500 of the above embodiment and a lead wire composed only of a left-handed lead wire as a comparative example were used. The measurement lead wire is a substantially annular annular portion formed by folding back one basic conducting wire, extending both ends of the basic conducting wire from one end, and bending the folded portion of the basic conducting wire from the other end. Is formed in an extended state. The measurement lead wire is connected to the FFT analyzer 640 at one end where both ends of the basic conductor are extended, and is bonded to the diaphragm 440 at the other end where the annular portion is extended. In addition, the size of the annular part of the measurement lead, the length of the basic conductor forming the annular part, the position where the annular part is adhered, etc. are set in advance so that the same conditions are applied to any measurement lead. Form measurement leads.

  In the measurement apparatus 600, when sound is output from the speaker main body 400, the diaphragm 440 vibrates, and the measurement lead wire connected to the speaker main body 400 also vibrates. In addition, since the speaker main body 400 is provided with the magnet 431 of the magnetic body 430, a magnetic field is generated around the speaker main body 400. When the measurement lead wire is vibrated in such a magnetic field, the magnetic flux lines passing through the measurement lead wire increase or decrease to generate an induced voltage. Then, the FFT analyzer 640 can measure the magnitude of vibration of the speaker body 400 and the induced voltage generated in the measurement lead wire. Thus, the magnitude | size of the induced voltage of various measurement lead wires was measured, and the result is shown in FIG. FIG. 8 is a graph showing the relationship between the vibration of the speaker body 400 and the generated induced voltage in the lead wire of the comparative example and the lead wire 500 of the present embodiment. Note that the solid line C in FIG. 8 indicates the relationship between the induced voltage generated in the lead wire 500 and the vibration of the speaker body 400 in the present embodiment. A broken line D indicates the relationship between the induced voltage generated in the lead wire of the comparative example and the vibration of the speaker main body 400.

  As shown in the experimental results of FIG. 8, in the lead wire 500 of the present embodiment, it can be confirmed that the induced voltage generated by the vibration of the speaker main body 400 is smaller than that of the conventional lead wire. This is because the induced current generated in the left stranded conductor 520 of the lead wire 500 and the induced current generated in the right stranded conductor 530 weaken each other. As a result, the lead wire 500 as a whole is apparently unaffected by the induced current. Therefore, it can be seen that when a current having a predetermined current value is passed through the lead wire 500 from the terminal portion 300 toward the speaker body 400, for example, the fluctuation of the current value becomes small because there is no influence of the induced current.

{Lead wire strength experiment}
Next, the strength of the lead wire 500 will be described. The strength of the lead wire 500 was measured by a bending test in which the measurement lead wire to be measured was repeatedly bent and the number of bendings until the measurement lead wire was damaged was measured. At this time, as a measurement lead wire used in the bending test, a lead wire 500 of the present embodiment and a lead wire composed only of a left-handed lead wire as a comparative example were used. As shown in Table 1 below, these measurement lead wires were set to have substantially the same outer diameter, resistance, basis weight, tensile strength, and tensile elongation. In this bending test, twelve samples of the lead wire of the comparative example and the lead wire 500 of the present embodiment were prepared, and the bending test was performed on each of these samples. The bending test is performed under the condition that the load applied to the lead wire is 100 g and the bending radius is 0.15 mm. The measurement results of this bending test are shown in Table 2 below.

  In the measurement results shown in Table 2, when the bending test was performed on the lead wire 500 of the present embodiment and the lead wire of the comparative example under substantially the same conditions, the average number of bendings until the lead wire of the comparative example was damaged In contrast to the 15147 times, in the lead wire 500 of the present embodiment, the average number of times of bending until breakage was 19,949. This is because the stress that the lead wire of the comparative example receives by bending can be dispersed only in one direction, but the lead wire 500 of the present embodiment disperses the stress received by bending in different directions. Thereby, it can be seen that the lead wire 500 of the present embodiment has a larger number of bendings until it breaks than the lead wire of the comparative example, and the strength against bending is stronger than the lead wire of the comparative example.

[Effect of speaker device]
In the speaker device 100 as described above, the lead wire 500 formed by the left twisted conductor 520 in which the foil wire 502 is spirally formed counterclockwise and the right twisted conductor 530 in which the foil wire 502 is spirally formed clockwise. The speaker body 400 and the terminal unit 300 are connected. For this reason, even when the lead wire 500 vibrates in the magnetic field generated in the speaker body 400, the induced current generated in the left twisted wire 520 and the induced current generated in the right twisted wire 530 cancel each other, and the lead wire 500 The value of the induced current generated as a whole can be reduced. Therefore, since the conduction of the current that should be passed by the induced current is not hindered, an electrical signal such as an audio signal can be conducted accurately and stably. Thereby, the sound output from the speaker main body 400 can be favorably output without deteriorating.

  Further, when stress is applied from the outside, the left twisted conductor 520 and the right twisted conductor 530 can disperse the stress in different directions. For this reason, the strength against bending, twisting and the like can be improved.

  Further, the left stranded conductor 520 and the right stranded conductor 530 are twisted together to form the basic conductor 510. For this reason, the left twisted conducting wire 520 and the right twisted conducting wire 530 can twist each other to reliably cancel each other's magnetic effect. Therefore, generation of induced current can be suppressed. Further, the strength of the lead wire 500 can be increased by further twisting such a basic conducting wire 510.

  Moreover, the stress received from the outside can be disperse | distributed to each direction by twisting together the left twist conducting wire 520 and the right twist conducting wire 530. Therefore, the bending break strength is increased, the strength is increased with respect to bending in all directions, and the breakage of the lead wire 500 can be prevented.

  Furthermore, the lead wire 500 is formed by twisting a plurality of basic conducting wires 510. Thus, the strength of the lead wire 500 can be further increased by using a plurality of basic conducting wires 510 having a high bending strength.

  And the left twisted conducting wire 520 and the right twisted conducting wire 530 are formed by winding a foil wire 502 spirally around the peripheral surface of the core wire 501. For this reason, the left twisted conducting wire 520 and the right twisted conducting wire 530 can be easily formed only by winding the foil wire 502 around the core wire 501. Therefore, the productivity of the lead wire 500 can be improved. Moreover, since the core wire 501 is used, the strength of the left twisted conductor 520 and the right twisted conductor 530 can be ensured. Accordingly, even when the basic conducting wire 510 is produced, the strong twisted left stranded conducting wire 520 and right stranded conducting wire 530 are twisted together, so that the basic conducting wire 510 can be easily formed.

  A foil wire 502 is formed in a strip shape. For this reason, it becomes easy to wind the foil wire 502 along the peripheral surface of the core wire 501. Therefore, it is possible to simplify the work of creating the left twisted conductor 520 and the right twisted conductor 530.

  The basic conducting wire 510 is formed by twisting two left twisted conducting wires 520 and two right twisted conducting wires 530 together. For this reason, when this basic conducting wire 510 is vibrated in a magnetic field, the magnitude of the induced current generated in the left twisted conducting wire 520 and the magnitude of the induced current generated in the right twisted conducting wire 530 can be made substantially the same. . Therefore, the induced current generated in the left twisted wire 520 and the induced current generated in the right twisted wire 530 cancel each other, and the current value of the induced current can be further reduced.

  The basic conducting wire 510 is formed by arranging a left twisted conducting wire 520 and a right twisted conducting wire 530 in a star quad structure. For this reason, the mutual electrostatic capacitance between conducting wires can be stabilized, and it becomes strong with respect to influences, such as noise by electromagnetic. Therefore, current can be stably conducted, and sound quality deterioration can be prevented. In addition, since the star-shaped quad structure is used, the external stress can be evenly distributed to the left twisted conductor 520 and the right twisted conductor 530, so that the strength against bending and twisting can be improved.

  Furthermore, the basic conducting wire 510 is formed to be symmetrical with respect to the center point G so that the left twisted conducting wires 520 and the right twisted conducting wires 530 face each other. For this reason, when the basic conducting wire 510 vibrates in a magnetic field, the effects of the left twisted conducting wire 520 and the right twisted conducting wire 530 from the magnetic field can be made substantially the same. Therefore, the magnitudes of the induced currents generated in the left twisted conductor 520 and the right twisted conductor 530 can be made substantially the same value. As a result, the induced current generated in the left stranded conductor 520 and the induced current generated in the right stranded conductor 530 cancel each other and can be substantially offset.

  Further, the lead wire 500 has the basic conductive wire 510a and the basic conductive wire 510c, the basic conductive wire 510b and the basic conductive wire 510d facing each other, and the right-handed conductive wire on the basic conductive wire 510c side of the basic conductive wire 510a and the basic conductive wire 510c side. 530 is disposed, and the left twisted conductor 520 is disposed on the basic conductor 510d side of the basic conductor 510b and the basic conductor 510b side of the basic conductor 510d. That is, the lead wire 500 has the basic conducting wire 510 disposed so as to be point-symmetric with respect to the center point. For this reason, when the lead wire 500 is vibrated in a magnetic field, the influences of the basic conducting wires 510 on each other can be made substantially the same. Therefore, electricity flowing through the lead wire 500 can be stabilized.

[Modification of Embodiment]
In addition, this invention is not limited to each embodiment mentioned above, The deformation | transformation shown below is included in the range which can achieve the objective of this invention.

  For example, the configuration using the lead wire 500 for the connection between the terminal portion 300 of the speaker device 100 and the speaker main body 400 is shown, but the lead wire of the present invention may be applied to the wiring inside the speaker main body 400, for example, the coil 432. Good. In this case, for example, by using a lead wire obtained by twisting one left twisted lead wire and one right twisted lead wire as a lead wire, the thickness of the lead wire can be reduced and a coil can be easily formed. Furthermore, the lead wire 500 is not limited to use in a speaker device, and can be used for all electric devices and electric parts such as a television, a video tape recorder, an audio device, a refrigerator, and a microwave oven. . Especially in information processing devices such as televisions, video tape recorders, audio devices, etc. that record and / or reproduce audio and video, and personal computers, it is possible to suppress the effects of induced currents caused by magnetic fields. It is possible to output information on the information without deterioration.

  Further, in the present embodiment, a basic conductor 510 is formed by twisting two left twisted conductors 520 and two right twisted conductors 530, and four basic conductors 510 thus formed are twisted together to form a lead wire. However, the present invention is not limited to this. For example, two left twisted conductors and two right twisted conductors may be twisted together to form a lead wire directly. With such a lead wire, the work of forming the basic conductive wire can be dispensed with and can be easily created. Moreover, since the diameter of the lead wire can be reduced, it can also be used for internal wiring of small equipment.

  Moreover, the lead wire which is arrange | positioned so that a left twisted conducting wire and a right twisted conducting wire may become mutually parallel, and is covered with the coating | coated member formed with the synthetic resin etc. may be sufficient. In this configuration, the work of twisting the lead wires can be omitted, so that productivity can be improved.

  Furthermore, in the above-described embodiment, the example of the basic conductor 510 in which the two left twisted conductors 520 and the two right twisted conductors 530 are formed in a star-shaped quad structure has been shown. You may comprise a basic conducting wire using a conducting wire and a right twist conducting wire. For example, the basic conductor may be configured by twisting four left twisted conductors and four right twisted conductors. In this case, it is preferable to arrange the left twisted conductor and the right twisted conductor so that the left twisted conductors and the right twisted conductors are point-symmetric with respect to the center point when the lead wire is sectioned. In such an arrangement, the magnitudes of the induced currents of the left twisted conductor and the right twisted conductor that are generated when the magnetic flux lines in the central axis of the basic conductor are increased or decreased can be made substantially the same. Therefore, the induced currents generated in the left twisted conductor and the right twisted conductor can be canceled with each other.

  Moreover, although the left twisted conducting wire 520 and the right twisted conducting wire 530 showed the structure formed by winding the foil wire 502 around the core wire 501, the foil wire 502 was formed helically without using the core wire 501. A left stranded conductor and a right stranded conductor may be used. In this case, since the core wire 501 is not necessary, the production cost can be reduced. Further, by changing the foil wire 502 to a material having good electrical conductivity and excellent strength and toughness, the strength of the left twisted conductor and the right twisted conductor can be ensured.

  Furthermore, although the foil wire 502 showed the example wound so that it might become dense along the surrounding surface of the core wire 501, it is not restricted to this. For example, as described above, the foil wire 502 may be wound with a predetermined gap.

  Moreover, it is good also as a structure from which the number of the left twisted conducting wire and right twisted conducting wire which comprises a basic conducting wire differs. For example, a basic conductive wire may be formed by twisting three left-hand stranded wires and two right-hand stranded wires. When such a basic conducting wire is vibrated in a magnetic field, the induced current generated in the left twisted lead becomes larger than the induced current generated in the right twisted lead. In this case, the current value of the apparent induced current of the entire lead wire can be suppressed, for example, by twisting the basic conductor obtained by twisting two left twisted conductors and three right twisted conductors.

  Moreover, in the said embodiment, although the example which comprises twisting the left twisted conducting wire 520 and the right twisted conducting wire 530 and comprising the basic conducting wire 510 was shown, for example, the left twisted conducting wire 520 and the right twisted conducting wire 530 are braided, and a basic conducting wire is formed. It may be configured. Even when such a basic conducting wire is vibrated in a magnetic field, the left stranded conducting wire and the right stranded conducting wire cancel each other's induced currents. Therefore, it appears that no induced current is apparently generated in the entire lead wire, and the current can be flowed stably. Further, even in the case of a configuration in which the left twisted conductor 520 and the right twisted conductor 530 are braided, the stress from the outside can be distributed in different directions between the left twisted conductor 520 and the right twisted conductor 530, so that bending or The strength against twisting can be improved. Furthermore, it is good also as a structure which braids a basic conducting wire and comprises a lead wire. Also in this case, the strength of the lead wire can be improved.

  Although the example in which the left twisted conductive wire 520 and the right twisted conductive wire 530 are coated with an insulating covering material has been shown, a basic conductive wire or a lead wire may be further coated with a covering material. The coating with the covering material may be one in which an insulating paint is applied to the surface of the conductive wire to form a coating layer, or the insulating synthetic resin tube member may be covered through the conductive wire. Further, a conductive member may be coated around the lead wire coated with the insulating coating material in this way. In this case, since the conductive member cuts off electromagnetic waves, an increase in the current value of the induced current generated in the lead wire 500 can be further suppressed. Therefore, the current can be flowed more stably.

  In addition, the specific structure and procedure for carrying out the present invention can be changed as appropriate to other structures and the like within the scope of achieving the object of the present invention.

[Effect of the embodiment]
In the speaker device 100 as described above, the lead wire 500 formed by the left twisted conductor 520 in which the foil wire 502 is spirally formed counterclockwise and the right twisted conductor 530 in which the foil wire 502 is spirally formed clockwise. The speaker body 400 and the terminal unit 300 are connected. For this reason, even when the lead wire 500 vibrates in the magnetic field generated in the speaker body 400, the induced current generated in the left twisted wire 520 and the induced current generated in the right twisted wire 530 cancel each other, and the lead wire 500 The value of the induced current generated as a whole can be reduced. Therefore, since the conduction of the current that should be passed by the induced current is not hindered, an electrical signal such as an audio signal can be conducted accurately and stably. Thereby, the sound output from the speaker main body 400 can be favorably output without deteriorating. Further, when stress is applied from the outside, the left twisted conductor 520 and the right twisted conductor 530 can disperse the stress in different directions. For this reason, the strength against bending, twisting and the like can be improved. Therefore, the lead wire 500 can flow a current stably.

It is the schematic which shows typically the speaker apparatus in this Embodiment. It is sectional drawing which shows a speaker main body typically. It is the schematic of the structure of a lead wire. It is a longitudinal cross-sectional view of a lead wire. It is a longitudinal cross-sectional view of a basic conducting wire. It is the schematic which shows the structure of a left twist conducting wire and a right twist conducting wire. It is the schematic which shows typically the measuring apparatus which measures the induced voltage which generate | occur | produces in a lead wire. It is the relationship figure which showed the relationship between the vibration of the speaker and the induced voltage which generate | occur | produce in the conventional lead wire and the lead wire of this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Speaker apparatus as an electric equipment 400 ... Speaker main body as an electric equipment main body 500 ... Lead wire as a conductive wire 501 ... Core material as a shaft material 502 ... Foil wire as a conductive wire 510 ... Basic conductive wire as a conductive wire 520 ... left-handed conducting wire as first conductive wire 530 ... right-handed conducting wire as second conductive wire

Claims (10)

A first conductive wire in which a conductive wire is linearly formed in a predetermined spiral direction;
A second conductive wire in which a conductive wire is linearly formed in a spiral direction opposite to the first conductive wire;
Conductor wire characterized by comprising. The conductor according to claim 1,
The conductive wire, wherein the first conductive wire and the second conductive wire are twisted together. The conductor according to claim 1,
The conductive wire, wherein the first conductive wire and the second conductive wire are braided together. A conductor according to any one of claims 1 to 3,
The conductive wire, wherein the first conductive wire and the second conductive wire are formed by spirally winding the conductive wire around a long shaft. A conductor according to claim 4,
The conductive wire is substantially strip-shaped. A conductor according to any one of claims 1 to 5,
The number of the first conductive wire and the second conductive wire is the same. A conductive wire, wherein a plurality of the conductive wires according to any one of claims 1 to 6 are twisted together. A conductive wire comprising a plurality of braided conductors according to any one of claims 1 to 6. An electric device body that generates a magnetic field;
The conductive wire according to claim 1 or 6, or the conductive wire according to claim 7 or 8, which is disposed in a magnetic field generated in the electric device body,
An electrical device characterized by comprising: An electric device body that vibrates due to vibration,
The conductive wire according to claim 1 or claim 6, or the conductive wire according to claim 7 or claim 8, for supplying electric power to the electric device main body,
An electrical device characterized by comprising:

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