JP5309800B2 - Receiver and relay cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a receiver and a relay cable enabling to easily manufacture an earphone antenna by ensuring sufficient reliability even when a cable is directly soldered to a terminal of a connector. <P>SOLUTION: In this receiver, a wire material constituting a coated wire SS of a multi-core coaxial cable 30 is divided to form wire material groups SSA and SSB, and at least one wire material group SSA out of SSA and SSB is soldered to a terminal T2 of a connector 32, and the other wire material group SSB is bundled by soldering. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a receiving device and a relay cable, and can be applied to, for example, a portable music player capable of receiving digital television broadcasting and FM broadcasting. The present invention distributes the wire constituting the coated wire of the multi-core coaxial cable to create a wire group, solders at least one of the wire groups to the connector terminals, and solders the remaining wire group by soldering. By bundling, even when a cable is directly soldered to a connector terminal, sufficient reliability can be secured and an earphone antenna or the like can be easily created.

  Conventionally, a portable music player connects an earphone via a small phone plug. In a phone plug of a portable music player, due to the demand for miniaturization, a metal member constituting an electrode extends to the back side to create a terminal, and a cable is directly connected to this terminal.

  That is, FIG. 19 is a side view for explaining the phone plug of the earphone. The phone plug 1 is formed in a cylindrical shape at the part to be inserted into the jack, and the cylindrical part 2 is sequentially separated from the tip side by an insulator to produce three electrodes 3A, 3B, 3C. The tip electrode 3C is provided with a constriction for preventing the dropout.

  In the phone plug 1, the metal members forming the electrodes 3A, 3B, and 3C are held coaxially. The phone plug 1 is formed with a cylindrical portion 4 on the back side where the coaxially held portion protrudes toward the back side and the radius gradually decreases in a stepwise manner. In the phone plug 1, a cylindrical portion 4 protruding to the back side is set to a portion where the cables 5A, 5B, and 5C are connected, and the cables 5A, 5B, and 5C are directly soldered to the metal members.

  Regarding such cable connection, Japanese Utility Model Laid-Open No. 6-41082 and Japanese Utility Model Laid-Open No. 5-20279 propose a device for connecting a coaxial cable to a connector.

Japanese Patent Laid-Open No. 2007-288231 proposes a configuration of an earphone antenna using a multicore coaxial cable. Here, the earphone antenna is an antenna that allows an earphone cable to function as an antenna, and the multicore coaxial cable is a cable in which a plurality of core wires are covered with a covered wire. In the configuration disclosed in Japanese Patent Laid-Open No. 2007-288231, a multi-core coaxial cable is connected to a 4-pin phone plug.
Japanese Utility Model Publication No. 6-41082 Japanese Utility Model Publication No. 5-20279 JP 2007-288231 A

  By the way, if the portable music player is provided with a broadcast wave reception function, the usability of the portable music player can be further improved. In this case, if the earphone antenna disclosed in Japanese Patent Application Laid-Open No. 2007-288231 is applied, the portability and design of the portable music player can be maintained.

  However, in this case, it is necessary to connect the coated wire of the multicore coaxial cable to the terminal of the phone plug. In this case, when directly soldering the covered wire, it is necessary to solder a large number of copper wires constituting the covered wire to a connection area of a small area. It becomes difficult to connect. As a result, there has been a problem that it is difficult to easily create an earphone antenna while ensuring sufficient reliability.

  The present invention has been made in consideration of the above points, and even when a cable is directly soldered to a connector terminal, it is possible to easily create an earphone antenna or the like while ensuring sufficient reliability. A receiver and a relay cable are proposed.

According to the present invention, there is provided a main unit and a relay cable that is connected to the main unit by a first connector and transmits signals and / or power between the main unit and an external device,
The relay cable is
A grounding cable, a multi-core coaxial cable having a plurality of core cables including a neutral cable having open ends at both ends, and a covered wire by a conductive mesh wire covering the plurality of core cables.
One end of the ground cable and / or the covered wire is connected to an antenna input end of a tuner built in the main unit,
The external device side of the other end of the covered wire is an open end, and the covered wire functions as a part of an antenna,
The covered wire is
A plurality of wire rod groups are provided by distributing a wire rod of the conductor mesh wire at a predetermined ratio,
At least one wire group of the plurality of wire groups is spirally bundled along the longitudinal direction by the ground cable, and the tip thereof is soldered to a corresponding terminal of the connector,
The exception of at least one wire group, the remaining wire group before Symbol plurality of wires group, bundled by respectively soldering,
A receiving device is provided.

Further, according to the present invention, a multi-core coaxial cable having a ground cable, a plurality of core cables including a neutral cable having both ends open , and a coated wire made of a conductor mesh that covers the plurality of core cables. the provided at one end of the multi-core coaxial cable, a first connector of the main unit side for connecting the multi-core coaxial cable to the main unit, provided at the other end of the multi-core coaxial cable, the multi-core coaxial cable A second connector on the external device side for connecting the external device to the external device,
By the multi-core coaxial cable, between the main device and the external device, and transmits signals and or power,
At least one grounding cable of the plurality of core wire cables and / or the covered wire are connected to an antenna input terminal of a tuner built in the main body device,
The external device side of the other end of the covered wire is an open end, and the covered wire functions as a part of an antenna,
The covered wire is
A plurality of wire rod groups are provided by distributing a wire rod of the conductor mesh wire at a predetermined ratio,
At least one wire group of the plurality of wire groups is spirally bundled along the longitudinal direction by the ground cable , and the tip thereof is soldered to a corresponding terminal of the connector,
Except for the at least one wire group, the remaining wire groups of the plurality of wire groups were each bundled by soldering.
A relay cable is provided.

  According to the configuration of claim 1 or claim 5, at least one wire group of a plurality of wire groups in which the wire rod of the covered wire is distributed at a predetermined ratio is bundled and soldered to a corresponding terminal of the connector. When attaching, the thickness of the wire group connected to the connector terminals can be set to a desired thickness by setting the distribution ratio. As a result, so-called whiskers can be prevented and the wires of this wire group can be reliably soldered to the corresponding terminals. Also, the remaining wire group of the plurality of wire groups can be bundled by soldering, so that the generation of so-called whiskers can be prevented. As a result, even when the cable is directly soldered to the terminal of the connector, it is possible to easily prepare an earphone antenna or the like while ensuring sufficient reliability.

  According to the present invention, even when a cable is directly soldered to a terminal of a connector, an earphone antenna or the like can be easily created while ensuring sufficient reliability.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. The description will be given in the following order.

1. 1. First embodiment Modification <First Embodiment>
[overall structure]
FIG. 2 is a perspective view showing a receiving system according to a specific configuration of the first exemplary embodiment of the present invention. In the receiving system 11, an earphone 24 is connected to a main body device 23 via a relay cable 22.

  Here, in the earphone 24, a plug 27 is connected to one end of a cable 26, and right and left channel speakers 28R and 28L are connected to the other end of the cable 26. The earphone 24 is connected to a parallel two-wire cable extending from the right channel and left channel speakers 28R and 28L to a three-wire flat cable in which the right and left channel audio signals share a common ground. Is done. As a result, the earphone 24 is connected to the plug 27 after the cables extending from the right and left channel speakers 28R and 28L are bundled together.

  In the relay cable 22, a jack 31 for connecting the plug 27 of the earphone 24 is provided at one end of the cable 30, and a plug 32 is provided at the other end of the cable 30. In this embodiment, a 5-pin phone plug is applied to the plug 32.

  Here, as shown in FIG. 3, the cable 30 is a multi-core coaxial cable. The cable 30 is formed by winding a plurality of core wire cables LL, LR, LG, LML, LMR, and LN, and sequentially covering with an insulating layer 35 made of polyethylene, a covered wire SS, and an outer skin 36 made of an elastomer. The covered wire SS is composed of a copper mesh wire. Each of the core wire cables LL, LR, LG, LML, LMR, and LN is formed of a twisted polyurethane wire.

  The main unit 23 (FIG. 2) is a portable music player having a digital television broadcast and FM broadcast reception function and a sound signal recording function acquired by a microphone. The main body device 23 is provided with a jack 33 for connecting the plug 32 of the relay cable 22 on the bottom surface.

  FIG. 4 is a connection diagram showing in detail the receiving system 11 of FIG. In the relay cable 22, the core cables LL, LR, and LG are assigned to the common ground for the hot side of the left channel audio signal SAL, the hot side of the right channel audio signal SAR, the left channel audio signal SAL, and the right channel audio signal SAR, respectively. . The core cables LML and LMR are assigned to the left channel and right channel audio signals SML and SMR acquired by the microphone. The ground core cable LG also serves as a ground for the audio signals SML and SMR.

  In the relay cable 22, the earphone side ends of the core cables LL, LG, LR, LML, and LMR are connected to corresponding terminals of the jack 31. In the relay cable 22, when the earphone 24 is connected to the jack 31, the core cables LML and LMR assigned to the audio signals SML and SMR are grounded, and the core cables LL, LG, and LR are connected to the earphone 24 as shown by broken lines. Connected to the corresponding cable. When an earphone having a microphone is connected, the core cables LL, LG, LR, LML, and LMR are connected to the corresponding cables of the earphone.

  The relay cable 22 is connected to the corresponding terminals T1 to T5 of the plug 32 at the main body side ends of the core cables LL, LG, LR, LML, and LMR. Note that the relay cable 22 is an open end in which the end of the earphone 24 and the end of the main unit 23 are not connected to any part of the core cable LN.

  Further, the relay cable 22 has an open end at which the earphone side end of the covered wire SS is not connected to any part. Moreover, the main body side end of the covered wire SS is connected to the core wire cable LG assigned to the ground. The relay cable 22 is set to a length of about ¼ wavelength with respect to the center frequency of the digital television broadcast band. Also, by setting this length, the length from the plug 32 to the speaker 8L is set to a length of about ¼ wavelength with respect to the center frequency of FM broadcasting.

  Here, the plug 32 is formed in a cylindrical shape at the portion to be inserted into the jack 33, and the cylindrical portion is sequentially separated from the tip side by an insulator to form five electrodes E1 to E5. The tip electrode E5 is provided with a constriction for preventing dropping.

  In the plug 32, the metal members forming the electrodes E1 to E5 are held coaxially. As for the plug 32, the part hold | maintained coaxially protrudes in the back side, and the cylindrical part from which a radius reduces gradually is created in the back side. As for the plug 32, the cylindrical part which protrudes in this back side is set to the terminals T1-T5 which connect a cable, and the core wire cables LL, LG, LR, LML, LMR, and the covered wire SS are connected to these terminals T1-T5. Is done.

  The main unit 23 includes a tuner 41 that receives digital television broadcast and FM broadcast, and a core cable LG is connected to an antenna input end of the tuner 41 through a plug 32, a jack 33, and a capacitor 42 in order. . Thus, the main body device 23 causes the covered wire SS to function as a monopole antenna and receives the digital television broadcast by the tuner 41. Also, the FM cable is received by the tuner 41 by causing the relay cable 22 and the cable 26 of the earphone 24 to function as a monopole antenna.

  In the main unit 23, the end of the capacitor 42 on the jack 33 side is grounded by a high-frequency cutoff circuit 43 that cuts off the high frequency. Here, the high-frequency cutoff circuit 43 is made of, for example, ferrite beads. In the main unit 23, the audio signal output from the tuner 41 and the audio signals SAR and SAL reproduced from the recording medium are amplified by the amplifier circuits 44R and 44L, respectively. In the main unit 23, the output signals of the amplifier circuits 44R and 44L are output to the jack 33 via the high frequency cutoff circuits 45R and 45L, respectively, and are output to the core cables LR and LG via the jack 33. As a result, the main unit 23 drives the speakers 28R and 28L with the audio signals SAR and SAL.

  In the main unit 23, the core cables LMR and LML are connected to one ends of the high frequency cutoff circuits 46R and 46L through the plug 32 and the jack 33, respectively, and the other ends of the high frequency cutoff circuits 46R and 46L are respectively connected to the amplification circuit 47R, Connected to 47L. When the output signals of the amplifier circuits 47R and 47L are output to a recording system (not shown) and a microphone is connected to the jack 31, the main body device 23 records the audio signal acquired by the microphone on a predetermined recording medium. The high frequency cutoff circuits 45R, 45L, 46R, and 46L are made of, for example, ferrite beads. Note that the ends of the high frequency cutoff circuits 45R, 45L, 46R, and 46L on the jack 33 side may be grounded with a capacitor at high frequency.

[Connection of multi-core coaxial cable]
FIG. 1 is a diagram illustrating a configuration of the end of the relay cable 22 on the plug 32 side. In the relay cable 22, the core wire cables LL, LR, LML, LMR other than the core wire cable LG assigned to the ground are directly soldered and connected to the corresponding terminals T 1, T 3 to T 5 of the plug 32. On the other hand, the covered wire SS is distributed at a predetermined ratio, and the first and second wire rod groups SSA and SSB are created by the wire rods constituting the mesh wire of the covered wire SS. Of the first and second wire groups SSA and SSB, the covered wire SS is connected to the corresponding terminal T2 of the plug 32 together with the core wire cable LG assigned to the ground.

  That is, as shown in FIG. 5A, first, the outer cable 36 at the end of the plug 32 is removed from the relay cable 22 within a certain range. Subsequently, as shown in FIG. 5B, in the relay cable 22, the covered wire SS is loosened, and the wires constituting the covered wire are distributed at a certain ratio. Thus, the relay cable 22 has a first wire group SSA having a thickness that can be soldered to the corresponding terminal T1 while ensuring sufficient workability and reliability, and a second wire group SSB made of the remaining copper wires. The copper wire constituting the covered wire SS is distributed. In this embodiment, this ratio is set to 2: 1. Therefore, the relay cable 22 is distributed to the first wire group SSA made up of 1/3 copper wires and the second wire group SSB made up of the remaining 2/3 copper wires of the copper wires constituting the covered wire SS. Is done. After the copper wires of the second wire group SSB are wound together, the entire relay cable 22 is soldered to the vicinity of the roots of the joined portions. Thereafter, as shown in FIG. 5C, the second wire group SSB is cut in the vicinity of the root.

  Thereafter, the insulating layer 35 on the plug 32 side end of the relay cable 22 is removed. Subsequently, as shown in FIG. 6A, the relay cable 22 is cut at the root portion of the core wire cable LN that is not connected to any part. Subsequently, as shown in FIG. 6 (B), after the first wire group SSA and the core wire cable LG assigned to the ground are joined, the tip is solder-plated by dipping into molten solder, and the wire group The SSB and the core cable LG are connected. At the same time, the other core cables LL, LR, LMR, LML, and LN are each cut to a predetermined length, and the tips are solder plated.

  Subsequently, as shown in FIG. 6C, the relay cable 22 is insulated after the first wire group SSA is inserted through the heat-shrinkable insulating tube 50 and then the root of the first wire group SSA. The portion is covered and insulated with a heat shrinkable insulating tube 51 together with the outer skin 36 and the core cables LL to LMR. The relay cable 22 is formed by soldering the first wire group SSA and the core wire cables LL to LMR to the corresponding terminals T1 to T5 and then covering the plug 32 side end with a resin.

[Operation of the embodiment]
In the above-described configuration, in the receiving system 11 (FIGS. 2 and 4), the tuner 41 is activated in response to a user operation, and audio signals SAL and SAR of digital television broadcasting or FM broadcasting are acquired. . In the receiving system 11 in which the audio signals SAL and SAR recorded on the recording medium are reproduced by a reproduction system (not shown), after the audio signals SAL and SAR are amplified by the amplifier circuits 44L and 44R, the jack 33, the plug 32, The core cables LL, LR and LG of the relay cable 22 are sequentially supplied to the cable 26 of the earphone 24, and the speakers 28L and 28R of the earphone 24 are driven by the audio signals SAL and SAR. In the reception system 11, the audio signals SAL and SAR are thereby transmitted to the earphone 24 via the relay cable 22 and provided to the user.

  In the receiving system 11, various high-frequency signals are induced in the cable 30 of the relay cable 22 and the cable 26 of the earphone 24 in a state where the audio signals SAL and SAR are transmitted to the earphone 24 through the relay cable 22 in this way. Is done.

  In the reception system 11, when the covered wire SS of the relay cable 22 functions as a monopole antenna in the UHF band and receives digital television broadcasting, a high-frequency signal induced in the covered wire SS is connected to the plug 32 and the jack 33. The data are sequentially input to the tuner 41. In the FM broadcast band, the cable 30 of the relay cable 22 and the cable 26 of the earphone 24 function as a monopole antenna, and a high-frequency signal induced in the cables 30 and 26 is sequentially connected to the tuner via the plug 32 and the jack 33. 41.

  Thereby, in this receiving system 11, a broadcast wave can be received by the earphone antenna, and a desired broadcast wave can be received by effectively avoiding portability and design deterioration of the main body device 23 which is a portable music player. Can do.

  However, when the earphone antenna is configured using the multicore coaxial cable as the relay cable 22 in this way, it is necessary to connect the covered wire SS to the terminal of the plug 32. In this case, from the viewpoint of preventing portability and design deterioration, the plug 32 is required to be small. As a result, the plug 32 has a small shape and employs a form in which a cable is directly soldered to a metal member constituting the connection electrodes E1 to E5 with the jack 33. As a result, when no countermeasure is taken, it is difficult to easily and reliably connect the covered wire SS of the cable 30 constituting the relay cable 22 to the plug 32. As a result, it becomes difficult to ensure sufficient reliability and easily create an earphone antenna.

  That is, as shown in FIG. 7 in comparison with FIG. 1, when the copper wires constituting the covered wire SS are simply wound together and soldered to the corresponding terminal T2, the thickness of the wound portion A is thicker. Therefore, it becomes difficult to solder to the terminal T2. In this case, the copper wire may protrude from the part A in a whisker-like manner, and a short circuit accident may occur with another part.

  On the other hand, as shown in FIG. 8, a method of connecting the covered wire SS to the corresponding terminal T2 using the jumper wire J1 is also conceivable. However, in this method, it is necessary to separately process the end of the covered wire SS by a soldering process or the like so that the copper wire constituting the covered wire SS does not come into contact with other parts, and the operation becomes complicated. .

  Therefore, in this embodiment (FIGS. 5 and 6), the copper wires constituting the covered wire SS are distributed at a predetermined ratio, and the first and second wire groups SSA and SSB are provided. The first wire group SSA out of the first and second wire group SSA and SSB is wound and bundled, and then connected to the corresponding terminal T2 of the plug 32. In this case, by selecting the distribution ratio, the thickness of the first wire group SSA can be set to a thickness that ensures sufficient workability and reliability and can be reliably soldered to the corresponding terminal T1. it can.

  As a result, in this embodiment, so-called whiskers are prevented from occurring in the first wire group SSA, and the wire material SSA can be reliably soldered to the corresponding terminal T2. Thereby, in this embodiment, even when the cable is directly soldered to the terminal of the connector, the earphone antenna can be easily created while ensuring sufficient reliability.

  Further, the remaining second wire group SSB is bundled by soldering, so that the generation of so-called whiskers can be prevented even in the portion of the second wire group SSB. Even in this case, in this embodiment, even when the cable is directly soldered to the terminal of the connector, the earphone antenna can be easily created while ensuring sufficient reliability.

  Further, the second wire group SSB is cut at the root portion, thereby avoiding an increase in size.

  Further, in the first wire group SSA, after being bundled together with the grounding core wire cable LG, they are connected to the terminal T2. Thereby, in this embodiment, the soldering work of the covered wire SS and the core wire cable LG to the terminal T2 can be simplified.

  In addition, by connecting the covered wire SS and the core cable LG in this manner, and the earphone side end of the covered wire is an open end, the covered wire functions as a monopole antenna in the UHF band, and the FM broadcast band Then, the cable 26 and the relay cable 22 of the earphone 24 can function as a monopole antenna.

  By the way, when only a part of the copper wire constituting the mesh wire is connected to the corresponding terminal T2 by soldering, the function as an antenna may be deteriorated. 9 to 17 are diagrams showing the results of measuring changes in characteristics depending on the number of wires to be soldered to the terminal T2. 9 to 12 show measurement results when only five wires constituting the covered wire SS are connected to the terminal T2, and symbols LH and LV indicate measurement results of horizontal polarization and vertical polarization, respectively. 10 and 11 are tables showing details of the measurement results of FIG. FIGS. 12 to 14 show the measurement results according to this embodiment in comparison with FIGS. 15 to 17 show measurement results when all of the wires are connected by comparison with FIGS. 9 to 11. FIG. 18 is a diagram showing a comparison of the measurement results of FIGS. 9 to 17. In FIG. 18, reference numerals L1, L2, and L3 denote measurement results when only five wires are connected to the terminal T2, measurement results according to the embodiment, and measurement results when all the wires are connected. According to these measurement results, it was confirmed that there was no significant difference in characteristics even when the distribution ratio was varied.

[Effect of the embodiment]
According to the above configuration, the wire constituting the coated wire of the multi-core coaxial cable is distributed to create a wire rod group, and at least one of the wire rod groups is soldered to the connector terminal, and the remaining wire rod group is By bundling by soldering, even when a cable is directly soldered to a connector terminal, sufficient reliability can be secured and an earphone antenna can be easily created.

Also, with the end of the coated wire on the external device side as the open end, one wire group and one of the core cables are connected together and then connected to the corresponding terminal of the connector, so that the coated wire is monolithic in the UHF band. In the FM broadcasting band, the earphone cable and the relay cable can function as a monopole antenna, and the soldering operation of the coated wire and the core cable can be simplified.
<Modification>
In the above-described embodiment, the case where the wire constituting the mesh wire of the covered wire is distributed to the first and second wire group and connected to the connector has been described, but the present invention is not limited thereto, You may make it distribute to three or more wire rod groups. In this case, a plurality of wire rod groups among the three or more wire rod groups may be soldered directly to the terminals.

  Moreover, in the above-mentioned embodiment, the case where the main body apparatus side end of a covered wire was connected to the core wire cable allocated to the earth was described. However, the present invention is not limited to this, and the main body device side end of the covered wire may be connected to another core wire cable, and further, the main body device side end of the covered wire may be connected to a plurality of core wire cables. Also good. When connecting the main unit side end of the coated wire to multiple core cables, connect the core cable and the coated wire via a small-capacitance capacitor, or connect multiple core cables to each other. It is necessary not to hinder the transmission of signals assigned to the cable, and to connect a plurality of core cables to the main unit side end of the covered wire with sufficiently low impedance in the reception frequency band of the main unit. .

  In the above-described embodiment, the case where the phone plug is arranged at one end of the relay cable has been described. However, the present invention is not limited to this, and the main point is the case where various connectors having a structure to be soldered directly to the terminal are arranged. Can be widely applied to.

  In the above-described embodiment, the case where the covered wire, the earphone cable, and the relay cable function as a monopole antenna in the UHF band and the FM band, respectively, has been described. However, the present invention is not limited to this. For example, when only a covered wire functions as an antenna, only an earphone cable functions as an antenna, and a multicore coaxial cable of a relay cable functions as a coaxial transmission line. it can. When the relay cable functions only as a coaxial transmission line, the coated wire is grounded at a high frequency, and the core cable is connected to the antenna input end of the tuner.

  In the above-described embodiment, the case of receiving digital television broadcast waves and FM broadcast waves has been described. However, the present invention is not limited to this and can be widely applied to receiving various broadcast waves. .

  In the above-described embodiment, the case where the earphone is detachably connected using the connector has been described. However, the present invention is not limited to this, and is widely applied to the case where the earphone is difficult to attach / detach by so-called built-in. can do.

  In the above-described embodiment, the case where the cable for transmitting the audio signal functions as an antenna has been described. However, the present invention is not limited to this, and various analog signals other than audio signals, cables that transmit digital signals, and cables that transmit power may function as antennas.

  In the above-described embodiment, the case where the present invention is applied to a reception system using a portable music player has been described. However, the present invention is not limited to this, and various receptions such as a mobile phone having a broadcast wave reception function can be used. Can be widely applied to the device.

  The present invention can be applied to, for example, a portable music player capable of receiving digital television broadcasting and FM broadcasting.

It is a side view with which it uses for description of the relay cable which concerns on the receiving system of the 1st Embodiment of this invention. It is a perspective view which shows the receiving system of the 1st Embodiment of this invention. It is a figure which shows the cable applied to the relay cable which concerns on the receiving system of FIG. FIG. 3 is a connection diagram illustrating the receiving system of FIG. 2. It is a side view with which it uses for description to the process of the cable of FIG. FIG. 6 is a side view for explaining the continuation of FIG. 5. It is a side view with which it uses for description of the connection by the conventional connection method. It is a side view with which it uses for description in the case of connecting using a jumper wire. It is a characteristic curve figure which shows the characteristic at the time of reducing the number of the wire materials to solder. FIG. 10 is a chart showing measurement results of vertical polarization among the measurement results of FIG. 9. FIG. 10 is a chart showing the measurement result of horizontal polarization among the measurement results of FIG. 9. It is a characteristic curve figure which shows the characteristic of the receiving system of FIG. It is a graph which shows the measurement result of vertical polarization among the measurement results of FIG. It is a graph which shows the measurement result of horizontal polarization among the measurement results of FIG. It is a characteristic curve figure which shows the characteristic at the time of connecting all the wire. It is a graph which shows the measurement result of vertical polarization among the measurement results of FIG. It is a graph which shows the measurement result of horizontal polarization among the measurement results of FIG. It is the figure which put together the measurement result of FIGS. It is a side view with which it uses for description of the conventional phone plug.

Explanation of symbols

1, 27, 32 ... plug, 11 ... receiving system, 22 ... relay cable, 23 ... main unit 23 ... earphone, 26, 30 ... cable, 31, 33 ... jack, E1-E5 ... Electrode, LG, LL, LR, LML, LMR, LN ... Core wire cable, SS ... Coated wire, T1-T5 ... Terminal

Claims (5)

A main unit,
A relay cable that is connected to the main unit by a first connector and transmits signals and / or power between the main unit and an external device;
The relay cable is
A grounding cable, a multi-core coaxial cable having a plurality of core cables including a neutral cable having open ends at both ends, and a covered wire by a conductive mesh wire covering the plurality of core cables.
One end of the ground cable and / or the covered wire is connected to an antenna input end of a tuner built in the main unit,
The external device side of the other end of the covered wire is an open end, and the covered wire functions as a part of an antenna,
The covered wire is
A plurality of wire rod groups are provided by distributing a wire rod of the conductor mesh wire at a predetermined ratio,
At least one wire group of the plurality of wire groups is spirally bundled along the longitudinal direction by the ground cable, and the tip thereof is soldered to a corresponding terminal of the connector,
The exception of at least one wire group, the remaining wire group before Symbol plurality of wires group, bundled by respectively soldering,
Receiver device. The one wire group and one ground cable of the core cable are connected together and then connected to a corresponding terminal of the first connector and connected to an antenna input end of the tuner. ,
The receiving device according to claim 1. The relay cable is detachably connected to the external device by a second connector;
The receiving device according to claim 1. The receiving device according to claim 1, wherein the external device is an earphone. A multi-core coaxial cable having a grounding cable, a plurality of core cables including a neutral cable having open ends at both ends, and a sheathed wire of a conductor wire covering the plurality of core cables;
A first connector on a main device side that is provided at one end of the multi-core coaxial cable and connects the multi-core coaxial cable to the main device;
Provided at the other end of the multi-core coaxial cable, and having a second connector on the external device side for connecting the multi-core coaxial cable to an external device;
The multi-core coaxial cable transmits signals and / or power between the main unit and the external device,
At least one grounding cable of the plurality of core wire cables and / or the covered wire are connected to an antenna input terminal of a tuner built in the main body device,
The external device side of the other end of the covered wire is an open end, and the covered wire functions as a part of an antenna,
The covered wire is
A plurality of wire rod groups are provided by distributing a wire rod of the conductor mesh wire at a predetermined ratio,
At least one wire group of the plurality of wire groups is spirally bundled along the longitudinal direction by the ground cable, and the tip thereof is soldered to a corresponding terminal of the connector,
A relay cable in which the remaining wire groups of the plurality of wire groups excluding the at least one wire group are each bundled by soldering.

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