WO2007138775A1 - アンテナ用コイル装置及び車両のリアウィンドウのアンテナシステム - Google Patents
アンテナ用コイル装置及び車両のリアウィンドウのアンテナシステム Download PDFInfo
- Publication number
- WO2007138775A1 WO2007138775A1 PCT/JP2007/055101 JP2007055101W WO2007138775A1 WO 2007138775 A1 WO2007138775 A1 WO 2007138775A1 JP 2007055101 W JP2007055101 W JP 2007055101W WO 2007138775 A1 WO2007138775 A1 WO 2007138775A1
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- WO
- WIPO (PCT)
- Prior art keywords
- coil device
- coil
- antenna
- mounting
- antenna coil
- Prior art date
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- 238000004804 winding Methods 0.000 claims description 46
- 239000004519 grease Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 10
- 238000009434 installation Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 11
- 239000004020 conductor Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 6
- 238000004080 punching Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1271—Supports; Mounting means for mounting on windscreens
- H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
Definitions
- the present invention relates to an antenna coil device and a rear window antenna system for a vehicle that are preferably used to remove noise superimposed on a radio signal, for example.
- a glass antenna for an automobile that can receive an antenna broadcast on a rear window of the automobile and receive a radio broadcast, a television broadcast or the like in the automobile.
- the rear window of a car has a defogger heating wire and antenna wires around the heating wire. Radio broadcasts, television broadcasts, and the like can be received using the heating wires and antenna wires arranged in the rear window as reception antennas.
- Noise components may be mixed in radio signals such as radio broadcasts and television broadcasts received by glass antennas for automobiles.
- One of the causes of the mixing of noise components is the effect of noise contained in the power output from the on-board battery to heat the defogger heating wire.
- radio signals received by the defogger heating wire may leak to the vehicle body or DC power source through the feeder line, causing problems.
- an antenna coil device excluding noise is connected between a heating wire that prevents fogging that occurs in the rear window of an automobile and a DC power source such as an in-vehicle battery.
- the antenna coil device uses a unique self-resonant frequency to prevent noise from being superimposed on the radio signal received by the glass antenna for automobiles and to improve the reception sensitivity of the radio signal. Then, in accordance with the frequency band of the signal radio wave, a high impedance is generated near the resonance frequency, and the noise superimposed on the radio wave signal is removed.
- Patent Document 1 discloses a choke coil 10 that attenuates noise.
- a configuration example of the choke coil 10 for a glass antenna will be described with reference to FIG.
- the choke coil 10 copper wires are laminated in a cylindrical shape, and a Ni—Zn-based magnetic core 2 is inserted into a wound coil 1. Then, both ends of the coil 1 are connected to a metal terminal plate 5 and a metal plate 6 provided on a resin-made fixing base composed of the base portion 3 and the base auxiliary portion 4. A plate-like dielectric 7 is inserted between the metal terminal plate 5 and the metal plate 6.
- Patent Document 2 discloses an antenna coil device that eliminates noise.
- a configuration example of the antenna coil device 20 connected to the bus bar will be described with reference to FIG.
- a coil portion 12 in which a lead wire is wound around a magnetic core 11 is mounted on a case 13 made of plastic resin.
- a terminal plate 14 for connecting one end of a lead wire wound around the coil portion 12 is provided on the front side of the case 13.
- a terminal plate 15 for connecting the other end of the lead wire wound around the coil portion 12 is provided on the front side of the case 13.
- the terminal boards 14 and 15 are arranged so as to face each other substantially in parallel, and are separated by a predetermined distance in the vertical direction.
- Patent Document 1 JP-A-9 213528
- Patent Document 2 JP-A-2005-086402
- the coil device for an antenna that has been conventionally attached to the rear window of an automobile is composed of two different parts for each of the left and right ends of the rear window.
- the production of parts for two specifications increased the number of parts, and it was necessary to manage a large number of parts, making it difficult to perform assembly work.
- the antenna coil device described in Patent Document 2 includes two terminal plates facing each other, The case has a symmetrical configuration.
- the coil pattern placed on the case has a limited shape and cannot be said to have a high degree of design freedom.
- the present invention has been made in view of such a situation, and an object thereof is to provide an antenna coil device that is configured with parts having a single specification and corresponding to a plurality of specifications and having a high degree of design freedom.
- An antenna coil device includes a winding coil, a bar-shaped magnetic core inserted and disposed inside the winding coil, a connector connecting portion, and a first coil for engaging one end of the winding coil.
- a mounting terminal having a connector terminal having a binding portion of 1, a fixing portion having a mounting surface, a second binding portion for engaging the other end of the winding coil, and a mounting terminal;
- a connector terminal is attached, and a grease member on which the winding coil is placed is provided.
- the wide surface of the connector connection portion and the mounting surface of the fixed portion are arranged substantially orthogonally, and the connector terminal can take the first arrangement or the second arrangement with respect to the resin member.
- the connector connecting portion is located on one end side in the width direction of the resin member, and in the second arrangement, the connector connecting portion defined as the first arrangement is rotated 180 degrees.
- the connecting portion is located on the other end side in the width direction of the resin member.
- the connector terminal takes the first arrangement or the second arrangement with respect to the grease member, so that one specification can correspond to a plurality of specifications.
- the present invention corresponds to a plurality of specifications with one specification, it is not necessary to manufacture parts having a plurality of specifications according to the mounting position of the antenna coil device, and the manufacturing cost can be reduced. effective.
- the provision of a plurality of types of coil patterns of the conductive wire forming the coil portion has the effect of further improving the degree of design freedom.
- FIG. 1 is a configuration diagram showing an arrangement example of an antenna coil device according to a first embodiment of the present invention.
- FIG. 2 is a perspective view showing an example of the antenna coil device according to the first embodiment of the present invention.
- FIG. 3 is a partial assembly diagram showing an example of each part constituting the antenna coil device according to the first embodiment of the present invention.
- FIG. 4 is an explanatory diagram showing an example of a coil pattern according to the first embodiment of the present invention.
- FIG. 5 is a perspective view showing an example in which the connector terminals are switched and connected in the first embodiment of the present invention.
- FIG. 6 is a perspective view showing an example of the antenna coil device according to the first embodiment of the present invention.
- FIG. 7 is a perspective view showing an example of an antenna coil device according to a second embodiment of the present invention.
- FIG. 8 is a perspective view showing an example of an antenna coil device according to a third embodiment of the present invention.
- FIG. 9 is an explanatory diagram showing an example of stray capacitance between the antenna coil device and the conventional antenna coil device according to the third embodiment of the present invention.
- FIG. 10 is a configuration diagram showing an example of a conventional choke coil.
- FIG. 11 is a configuration diagram showing an example of a conventional antenna coil device.
- FIGS. 1-10 An antenna coil device according to a first embodiment of the present invention will be described with reference to FIGS.
- This embodiment will be described as an example applied to a coil device for an antenna that can remove noise superimposed on radio signals such as radio broadcasting and television broadcasting.
- FIG. 1 there is shown a connection configuration example of an antenna system for a rear window of a vehicle when the antenna coil device according to the first embodiment of the present invention is attached to the rear window of an automobile. I will explain.
- a receiving system 30 for receiving radio broadcast or television broadcast is configured in a rear window 32 of an automobile (not shown).
- a radio antenna line 31 for receiving radio broadcasts and a TV antenna line 35 for receiving TV broadcasts are embedded.
- An amplifier 36 that amplifies the radio signal received by the radio antenna line 31 is connected to the radio antenna line 31.
- the radio signal amplified by the amplifier 36 is supplied to a radio receiver (not shown).
- the automobile includes an in-vehicle battery 34 that supplies DC power.
- the TV antenna line 35 also functions as a defogger power supply line that prevents fogging of the rear window 32.
- the defogger power supply line is heated by the electric power supplied from the in-vehicle battery 34 to warm the entire rear window 32 and to prevent fogging of the rear window 32.
- the coil devices for antennas 40a and 40b for removing noise are arranged at the left and right ends of the rear window 32.
- the notch 34 is connected to the bus bar 33b via the antenna coil device 40b.
- the bus bar 33b is connected to one end of the TV antenna line 35.
- the bus bar 33b has a function of equally supplying the power supplied from the battery 34 to the plurality of television antenna lines 35.
- a bus bar 33a is connected to the other end of the TV antenna line 35.
- An antenna coil device 40a for removing noise is connected to the bus bar 33a.
- the television antenna line 35 is connected to an amplifier 37 that amplifies the television signal received by the television antenna line 35.
- the amplifier 37 is connected to the bus bar 33a and the bus bar 33b.
- the television signal amplified by the amplifier 37 is supplied to a television receiver (not shown).
- the antenna coil device 40a includes a conductive mounting terminal 44 for installation at the right end of the rear window 32 (see FIG. 1).
- the mounting terminal 44 is a terminal formed by punching a conductive flat plate and bending it.
- the mounting terminal 44 is formed with a flat body 44c.
- a base 45 made of non-conductive and non-magnetic resin is attached to the main body 44c.
- a first support portion 44d and a second support portion 44e are formed at both ends of the main body portion 44c. The first support portion 44d and the second support portion 44e are bent at substantially right angles in the same direction with respect to the main body portion 44c.
- the first mounting portion 44a that comes into contact with the installation position of the rear window 32 is connected to the main body portion 44c via the first support portion 44d.
- the first mounting portion 44a is bent at a substantially right angle with respect to the first support portion 44d. Therefore, the flat surface portion of the first mounting portion 44a has a crank shape that is substantially in the same direction on the outer side with respect to the flat surface portion of the main body portion 44c.
- the first support portion 44d in this example is connected to the side that is biased with respect to the center line 48a of the first mounting portion 44a.
- the second mounting portion 44b that comes into contact with the installation position of the rear window 32 is connected to the main body portion 44c via the second support portion 44e.
- the second mounting portion 44b is bent at a substantially right angle with respect to the second support portion 44e. Therefore, the flat surface portion of the second mounting portion 44b has a crank shape that is substantially in the same direction on the outer side with respect to the flat surface portion of the main body portion 44c.
- the second support portion 44e of this example is connected to the side that is biased with respect to the center line 48b of the second mounting portion 44b.
- a second binding portion 42 for engaging the conductive wire is formed on the same side as the second support portion 44e.
- the first mounting portion 44a and the second mounting portion 44b have a flat surface portion for mounting at the installation position of the rear window 32, and this flat surface portion is also referred to as a mounting surface.
- a base 45 is fixed to the main body 44c of the mounting terminal 44 with an adhesive or the like.
- a coil part 46 in which a conductor is wound with a desired number of wires is fixed to a magnetic core 47 formed in a cylindrical shape with an adhesive or the like.
- the magnetic core 47 is a rod-shaped or rectangular magnetic core.
- a connector terminal connecting portion 45a is formed at one end of the base 45 in order to connect the conductive connector terminal 43.
- the connector terminal connecting portion 45a is formed as a protrusion at the end of the base 45 on the side where the connector terminal 43 is attached.
- the connector terminal connection portion 45a is formed with a first groove portion 45c having a width and a depth substantially the same as the diameter of the conductor wound around the coil portion 46.
- the connector terminal 43 is fixed to the connector terminal connection portion 45a with an adhesive or the like.
- the connector terminal 43 is formed with a connector connecting portion 43a for connecting with a lead wire of an external device.
- the wide surface 43c of the connector connecting portion 43a is disposed substantially orthogonal to the wide surface 44f of the first mounting portion 44a.
- One end of a conducting wire wound around the coil portion 46 is engaged with a first binding portion 41 formed on the connector terminal 43 via a first groove portion 45c.
- the other end of the conducting wire wound around the coil portion 46 is engaged with a second binding portion 42 obtained by bending the mounting terminal 44.
- the arrangement in which the connector terminal 43 is connected to the connector terminal connecting portion 45a as shown in FIG. 2 is referred to as a first arrangement.
- FIG. 3 (a) shows the coil terminal 46 removed from the antenna coil device 40a
- the connector terminal 43 4 is a perspective view showing a configuration example in which only the mounting terminal 44 and the base 45 are combined.
- FIG. 3B is a perspective view showing a configuration example of the mounting terminal 44.
- FIG. 3C is a perspective view showing a configuration example of the connector terminal 43.
- FIG. 3D is a perspective view showing a configuration example of the base 45.
- FIG. 3 (a) shows that the base 45 has a recess for attaching the coil portion 46 (see FIG. 2).
- the other components are shown in the same manner as in FIG.
- FIG. 3B shows that the mounting terminal 44 is formed of one conductive material.
- the mounting terminal 44 is formed by bending a punched flat conductive material.
- FIG. 3 (c) shows that the connector terminal 43 is formed with a base connection portion 43 b for connection to the base 45.
- the base 45 forms a connector terminal connection portion 45a (see FIG. 3 (d)) along the arrow B indicating the connector terminal connection direction, and is inserted into a base connection portion insertion hole 45b described later. .
- the base connection portion 43b (connector terminal 43) can be inserted into the base connection portion insertion hole 45b along the arrow B and fixed with an adhesive or the like.
- the connector terminal 43 can be connected to the base 45 by changing the direction by 180 degrees.
- FIG. 3 (d) shows that the connector terminal connecting portion 45 a is formed with a base connecting portion insertion hole 45 b for connecting the connector terminal 43. Further, the connector terminal connection portion 45a is formed with a second groove portion 45d at a position symmetrical to the first groove portion 45c. Similar to the first groove portion 45c, the width and depth of the second groove portion 45d are substantially the same as the diameter of the conducting wire forming the coil portion 46.
- FIG. 4 (a) shows an example in which the first coil pattern 46a is viewed from the front.
- FIG. 4 (b) shows an example in which the first coil pattern 46a is also visually recognized in the upper surface direction.
- FIG. 4 (c) shows an example in which the second coil pattern 46b is viewed from the front direction.
- FIG. 4 (d) shows an example in which the second coil pattern 46b is viewed from the upper surface direction.
- the description of the magnetic core 47 is omitted.
- the conductive wire 47c forming the first coil pattern 46a starts to be wound from the winding start portion 47a and is equidistant from the center point 47d of the magnetic core (not shown) a predetermined number of times. It is shown that only winding and winding end at the end of winding 47b. Winding start part 47a and winding end part 47b Is approximately 180 degrees opposite the center point 47d.
- the first coil pattern 46a has n + (1/2) along the winding axis 47e starting from the winding start portion 47a and matching the insertion direction of the magnetic core 47c. It is shown that the pattern turns only once and ends at winding end 47b.
- a coil pattern in which the lead wire 47c is wound n + (1/2) times is defined as a first coil pattern 46a.
- the first coil pattern 46a is applied to the coil pattern of the antenna coil device 4 Oa.
- the conductive wire 48c forming the second coil pattern 46b starts to be wound from the winding start portion 48a and is equidistant from the center point 48d of the magnetic core (not shown) a predetermined number of times. It is indicated that only winding and winding end at 48b end.
- the winding start portion 48a and the winding end portion 48b are in positions that are substantially coincident with each other by visually confirming the frontal direction force.
- the second coil pattern 46b starts winding the lead wire 48c from the winding start portion 48a and winds it n times along the winding axis 48e that matches the insertion direction of the magnetic core. It is shown that the pattern ends at the end of winding 48 b.
- a coil pattern in which the conductor 48c is wound n times is defined as a second coil pattern 46b.
- the first coil pattern 46a and the second coil pattern 46b differ in the number of times that the conductive wire is wound by a half turn (1/2). From this, the inductance L can be adjusted by half or one turn of the number of turns of the conductor. Note that the number of windings of the conducting wire 47c indicated by the first coil pattern 46a may be n ⁇ (1/2) times.
- the connector terminal connecting portion 45a is formed with a first groove portion 45c and a second groove portion 45d (see FIG. 3D).
- the second coil pattern 46b (see FIG. 4 (d)) is used as the coil pattern forming the coil part.
- the conductor wound by the second coil pattern 46b forms a coil part 46 '. To do.
- the number of windings of the conducting wire is different from the number of windings of the conducting wire wound around the coil portion 46 by a half circuit.
- the arrangement in which the connector terminal 43 is connected to the connector terminal connecting portion 45a is referred to as a second arrangement.
- the antenna coil device 40a that can take the first or second arrangement can be configured.
- the force antenna coil device 40b described for the antenna coil device 40a is similarly configured.
- the connector terminal 43, the base 45, and the coil portion 46 of the antenna coil device 40b are the same configuration examples as the antenna coil device 40a, and therefore, the same reference numerals are given and detailed description thereof is omitted.
- the antenna coil device 40b includes a conductive mounting terminal 54 for installation at the left end of the rear window 32 (see FIG. 1).
- the mounting terminal 54 is a terminal formed by punching a conductive flat plate and bending it.
- the mounting terminal 54 is formed with a flat body 54c.
- a base 45 made of non-conductive and non-magnetic resin is attached to the main body 54c.
- a first support portion 54d and a second support portion 54e are formed at both ends of the main body portion 54c. The first support portion 54d and the second support portion 54e are bent substantially at a right angle in the same direction with respect to the main body portion 54c.
- the first mounting portion 54a that contacts the installation position of the rear window 32 is connected to the main body portion 54c via the first support portion 54d.
- the first mounting portion 54a is bent at a substantially right angle with respect to the first support portion 54d. Therefore, the flat surface portion of the first mounting portion 54a has a crank shape that is substantially in the same direction on the outer side with respect to the flat surface portion of the main body portion 54c.
- the first support portion 54d in this example is connected to the side that is biased with respect to the center line 58a of the first mounting portion 54a.
- the second mounting portion 54b that contacts the installation position of the rear window 32 is connected to the main body portion 54c via the second support portion 54e.
- the second mounting portion 54b is bent at a substantially right angle with respect to the second support portion 54e. Therefore, the flat surface portion of the second mounting portion 54b has a crank shape that is substantially in the same direction on the outer side with respect to the flat surface portion of the main body portion 54c.
- the second support portion 54e in this example is connected to the side that is biased with respect to the center line 58b of the second mounting portion 54b.
- a second binding portion 52 for engaging the conducting wire is formed on the same side as the second support portion 54e.
- the first The mounting portion 54a and the second mounting portion 54b have a flat surface portion for mounting at the installation position of the rear window 32, and this flat surface portion is also referred to as a mounting surface.
- the mounting terminal 54 of the antenna coil device 40b is symmetrical with respect to the center lines 58a, 58b of the mounting terminal 54 of the antenna coil device 40a. That is, the mounting terminal 54 is a mirror image of the mounting terminal 44 (see FIG. 3). Similar to the antenna coil device 40a, the antenna coil device 40b can also take the first or second arrangement by rotating the connector terminal 43 by 180 degrees.
- the connector terminal 43 can be switched 180 degrees and connected to the connector terminal connecting portion 45a.
- the direction of the connector terminal 43 can be changed by 180 degrees according to the place where the coil devices for antennas 40a and 40b are installed, so that the degree of freedom in design is improved.
- the antenna coil devices 40a and 40b can be easily configured.
- the two types of coil patterns can be provided with a conductive wire every half circle. For this reason, it is possible to finely adjust the inductance, and there is an effect that the resonance frequency and the value of the inductance can be adjusted flexibly according to the specification application.
- FIG. 7 is a perspective view of an antenna coil device 60 according to a second embodiment of the present invention.
- FIG. 7A is a perspective view showing a configuration example of the antenna coil device 60. It is shown that the base 45 and the mounting terminal 64 of the antenna coil device 60 are symmetrical with respect to the winding axis of the coil portion 46.
- FIG. 7B is a perspective view showing a configuration example of the mounting terminal 64.
- the configuration example of the mirror-symmetric antenna coil devices 40a and 40b attached to the left and right ends of the bus bar has been described.
- a part of the antenna coil devices 40a and 40b is deformed to be coupled to the winding shaft of the coil portion.
- a configuration example of the mounting terminal 64 of the antenna coil device 60 having a symmetrical configuration will be described.
- the connector terminal 43, the base 45, and the coil portion 46 of the antenna coil device 60 have the same configuration examples as the antenna coil devices 40a and 40b, and therefore, the same reference numerals are given and detailed description thereof is omitted.
- the configuration example in which the antenna coil device 60 is installed in the rear window 32 (see FIG. 1) of the automobile is the same as the antenna coil device according to the first embodiment already described. Therefore, detailed description is omitted.
- the antenna coil device 60 includes conductive mounting terminals 64 to be installed at the left and right ends of the rear window 32.
- the mounting terminal 64 is a terminal formed by punching and bending a conductive flat plate.
- the mounting terminal 64 is formed with a plate-shaped main body portion 64c.
- a base 45 made of non-conductive and non-magnetic resin is fixed to the main body 64c with an adhesive or the like.
- a coil part 46 in which a conductor is wound with a desired number of wires, is fixed to a magnetic core 47 of a magnetic body formed in a cylindrical shape with an adhesive or the like.
- a first support portion 64d and a second support portion 64e are formed at both ends of the main body portion 64c. The first support portion 64d and the second support portion 64e are bent substantially at a right angle in the same direction with respect to the main body portion 64c.
- the first mounting portion 64a that contacts the installation position of the rear window 32 is connected to the main body portion 64c via the first support portion 64d.
- the first mounting portion 64a is bent at a substantially right angle with respect to the first support portion 64d. Therefore, the flat surface portion of the first mounting portion 64a has a crank shape that is substantially in the same direction on the outer side with respect to the flat surface portion of the main body portion 64c.
- the first support portion 64d is connected to the extended line of the center line 68a of the first mounting portion 64a.
- the center line 68a coincides with the direction of the winding axis of the coil portion 46, and passes near the center of the wide surface 64f of the first mounting portion 64a.
- the center line 68b also coincides with the direction of the winding axis of the coil portion 46 and passes through the vicinity of the center of the wide surface 64g of the second mounting portion 64b.
- the wide surface 43c of the connector connecting portion 43a is disposed substantially orthogonal to the wide surface 64f of the first mounting portion 64a.
- the second mounting portion 64b that comes into contact with the installation position of the rear window 32 is connected to the main body portion 64c via the second support portion 64e.
- the second mounting portion 64b is bent at a substantially right angle with respect to the second support portion 64e.
- the planar portion of the second mounting portion 64b has a crank shape that is substantially in the same direction on the outer side with respect to the planar portion of the main body portion 64c.
- the second support 64e is The second mounting portion 64b is connected to the extended line of the center line 68b.
- two second binding portions 62a and 62b for engaging the conductor are formed on the same side as the second support portion 64e.
- the first mounting portion 64a and the second mounting portion 64b have a flat surface portion for mounting at the installation position of the rear window 32, and this flat surface portion is also referred to as a mounting surface.
- the antenna coil device 60 according to the second embodiment also adopts the first or second arrangement described in the first embodiment by rotating the connector terminal 43 by 180 degrees. Is possible. Further, the first coil pattern 46a and the second coil pattern 46b (see FIG. 4) can be applied to the coil portion 46.
- the antenna coil device 60 that can be mounted regardless of the left and right mounting positions.
- the antenna coil device 60 has a connector terminal 43 and a base coil 45, a coil part 46,
- the antenna coil device with 2 specifications can be manufactured from the mounting terminals 64. For this reason, there is no need to prepare two types of molds and the like necessary for manufacturing an antenna coil device having a symmetrical shape (for two specifications), and the manufacturing cost can be greatly reduced.
- each component itself is not a complicated configuration, the antenna coil device can be easily assembled.
- FIG. 8 (a) is a perspective view showing a configuration example of the antenna coil device 70 according to the third embodiment of the present invention.
- FIG. 8B is a perspective view showing a configuration example of the mounting terminal 74.
- FIG. 8C is a perspective view showing a configuration example of the connector terminal 73.
- the configuration example in which the antenna coil device 70 is installed in the rear window 32 (see FIG. 1) of the automobile is the antenna coil device according to the first embodiment already described. Detailed description will be omitted.
- the antenna coil device 70 includes conductive mounting terminals 74 to be installed at the left and right ends of the rear window 32.
- the mounting terminal 74 is a terminal formed by punching and bending a conductive flat plate.
- the mounting terminal 74 is formed with a flat plate-like main body 74c.
- a base 75 made of non-conductive and non-magnetic resin is attached to the main body 74c. .
- a first support portion 74d and a second support portion 74e are formed at both ends of the main body portion 74c. The first support portion 74d and the second support portion 74e are bent substantially at right angles to the main body portion 74c in the same direction.
- the first mounting portion 74a which is in contact with the installation position of the rear window 32, is connected to the main body portion 74c through the first support portion 74d.
- the first mounting portion 74a is bent at a substantially right angle with respect to the first support portion 74d.
- the planar portion of the first mounting portion 74a has a crank shape that is substantially in the same direction on the outer side with respect to the planar portion of the main body portion 74c.
- the first support portion 74d in this example is connected to the center line 78a of the first mounting portion 74a.
- the center line 78a coincides with the direction of the winding axis of the coil portion 76, and passes through the vicinity of the center of the wide surface 74f of the first mounting portion 74a.
- the center line 78b also coincides with the direction of the winding axis of the coil portion 76, and passes near the center of the wide surface 74g of the second mounting portion 74b.
- the second mounting portion 74b that comes into contact with the installation position of the rear window 32 is connected to the main body portion 74c via the second support portion 74e.
- the second mounting portion 74b is bent at a substantially right angle with respect to the second support portion 74e. Therefore, the planar portion of the second mounting portion 74b has a crank shape that is substantially in the same direction on the outer side with respect to the planar portion of the main body portion 74c.
- the second support portion 74e in this example is connected to the extension line of the center line 78b of the second mounting portion 74b.
- Two second binding portions 72a and 72b are formed on the same side as the second support portion 74e in order to engage the conductive wire.
- the first mounting portion 74a and the second mounting portion 74b have a flat portion for mounting at the installation position of the rear window 32, and this flat portion is also referred to as a mounting surface.
- the base 75 is fixed to the main body 74c of the mounting terminal 74 with an adhesive or the like.
- a coil portion 76 in which a conducting wire is wound with a desired number of turns is fixed to a magnetic core 77 formed in a cylindrical shape.
- a connector terminal connecting portion 75a for connecting the connector terminal 73 is provided at one end of the base 75.
- the connector terminal connection portion 75a indicates a slit in which one end of the base 75 is cut.
- the connector terminal 73 is a terminal formed by punching and bending a conductive flat plate.
- the connector terminal 73 includes a connection portion 73c bent at a substantially right angle with respect to the connector connection portion 73a, and a first linking portion 73b bent at a substantially right angle with respect to the connection portion 73c.
- the connector connection portion 73a is a terminal for connecting to an external device.
- the first binding portion 73b is used to connect one end of a conducting wire wound around the coil portion 76. Used for.
- the connecting portion 73c is fitted into the connector terminal connecting portion 75a and fixed with an adhesive or the like.
- the wide surface 73d of the connector connecting portion 73a is disposed substantially orthogonal to the wide surface 74f of the first mounting portion 74a.
- the other end of the conducting wire wound around the coil portion 76 is entangled with the second linking portion 72a.
- the first coil pattern 46a described in the first embodiment is applied to the coil pattern of the coil section 76.
- the second coil pattern 46b described in the first embodiment is applied to the coil pattern of the coil portion 76, the other end of the conducting wire of the coil portion 76 is engaged with the second binding portion 72b. Will do.
- the antenna coil device 70 according to the third embodiment also adopts the first or second arrangement described in the first embodiment by rotating the connector terminal 73 by 180 degrees. Is possible. Further, the first coil pattern 46a and the second coil pattern 46b (see FIG. 4) can be applied to the coil portion 46.
- FIG. 9 is a table comparing the stray capacitance components of the antenna coil device 70 of this example with respect to the conventional choke coil 10 (see FIG. 10) and the conventional antenna coil device 20 (see FIG. 11).
- the conventional choke coil 10 is referred to as a conventional antenna coil device (1).
- the conventional antenna coil device 20 is referred to as a conventional antenna coil device (2).
- the resonance frequency depends on the values of inductance: L and capacitor: C.
- inductance component coil component of the winding coil and the capacitor component of the antenna coil device
- Fluctuations in the quality of stray capacitance components and the capacitance components of externally configured capacitor components must be strictly controlled.
- the resonance frequency f of the antenna coil device is determined by the following equation (1).
- the tip portion of the metal terminal plate 5 (the portion to which the connector is connected) is substantially perpendicular to the mounting surface of the metal plate 6. is there .
- a part of the metal terminal plate 5 fitted in the base portion 3 faces the metal plate 6. For this reason, an unnecessary stray capacitance component is generated, and it becomes difficult to obtain a desired resonance frequency.
- the number of turns of the conductive wire forming the coil portion of the conventional antenna coil device (1), the conventional antenna coil device (2), and the antenna coil device 70 according to the present embodiment is the same. To do. The type and diameter of the magnetic core that attracts the conducting wire are the same. At this time, the inductance: L of each antenna coil device was calculated to be 2.50 H.
- the self-resonant frequency of the antenna coil device is measured.
- the self-resonant frequency of the conventional antenna coil device (1) was 81.0 MHz.
- the self-resonant frequency of the conventional antenna coil device (2) was 77.3 MHz.
- the self-resonant frequency of the antenna coil device 70 was 91.2 MHz.
- Capacitance component The value of C is obtained. As a result of calculation, the floating capacitance component C of the conventional antenna coil device (1) was 1.54 pF. The stray capacitance component C of the conventional antenna coil device (2) was 1.70 pF. The stray capacitance component C of the antenna coil device 70 was 1.22 pF.
- the stray capacitance component of the conventional antenna coil device (1) is about 20% higher than that of the antenna coil device 70.
- the stray capacitance component of the conventional antenna coil device (2) is larger than that of the antenna coil device 70. It is about 40% higher.
- the antenna coil device 70 has the smallest stray capacitance component, a higher resonance frequency can be obtained.
- the antenna coil device 70 that can be mounted regardless of the left and right mounting positions.
- the antenna coil device 70 has connector terminals 73, mounting terminals 74, and base 75 created according to one specification by having connector terminals and wire coils in a specific shape and rotating them 180 degrees according to the specifications.
- Two antenna coil devices can be manufactured from the coil section 76. For this reason, it is not necessary to prepare two types of molds necessary for product processing to manufacture a coil device for antennas with a symmetrical shape (for two specifications), and the manufacturing cost can be greatly reduced.
- each component itself is not a complicated configuration, so that the antenna coil device can be easily assembled.
- the wide surface 73d of the connector terminal 73 is substantially perpendicular to the wide surface 74f of the mounting terminal 74.
- the stray capacitance component generated between the two terminals can be greatly reduced.
- the uncertain element that lowers the resonance frequency is suppressed by significantly reducing the stray capacitance component, there is a remarkable effect.
- the mounting terminal, the connector terminal, and the base have a simple configuration. Two types of coil patterns were prepared. For this reason, it is possible to flexibly adjust the resonance frequency and the inductance value according to the specification application, and to obtain a desired resonance frequency and inductance value easily. In addition, since an antenna coil device having a function corresponding to two specifications can be obtained with one specification, there is an effect that the manufacturing cost can be reduced.
- the stray capacitance component generated between the terminals can be suppressed. For this reason, there is an effect that a desired resonance frequency can be easily obtained. In addition, since the generated stray capacitance component is small, there is an effect that it is possible to suppress uncertain elements that lower the resonance frequency.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/302,771 US7920041B2 (en) | 2006-05-29 | 2007-03-14 | Coil device for antenna and antenna system for rear window of vehicle |
EP07738571.4A EP2031697B1 (en) | 2006-05-29 | 2007-03-14 | Coil device for antenna and antenna system for rear window of vehicle |
JP2008517797A JP4927835B2 (ja) | 2006-05-29 | 2007-03-14 | アンテナ用コイル装置及び車両のリアウィンドウのアンテナシステム |
CN2007800197408A CN101454940B (zh) | 2006-05-29 | 2007-03-14 | 天线用线圈装置以及车辆的后窗的天线*** |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006-148417 | 2006-05-29 | ||
JP2006148417 | 2006-05-29 |
Publications (1)
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WO2007138775A1 true WO2007138775A1 (ja) | 2007-12-06 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/055101 WO2007138775A1 (ja) | 2006-05-29 | 2007-03-14 | アンテナ用コイル装置及び車両のリアウィンドウのアンテナシステム |
Country Status (5)
Country | Link |
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US (1) | US7920041B2 (ja) |
EP (1) | EP2031697B1 (ja) |
JP (1) | JP4927835B2 (ja) |
CN (1) | CN101454940B (ja) |
WO (1) | WO2007138775A1 (ja) |
Families Citing this family (10)
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JP5241549B2 (ja) * | 2009-02-09 | 2013-07-17 | 富士通テン株式会社 | 車両用アンテナのコネクタ |
US9768509B2 (en) * | 2013-08-09 | 2017-09-19 | Sumida Corporation | Antenna coil component, antenna unit, and method of manufacturing the antenna coil component |
DE102014207140A1 (de) * | 2014-04-14 | 2015-10-15 | Würth Elektronik iBE GmbH | Induktionsbauteil |
DE102014007246A1 (de) * | 2014-05-16 | 2015-11-19 | Erwin Büchele GmbH & Co. KG | Entstördrossel und Verfahren zur Herstellung einer Entstördrossel |
JP6437227B2 (ja) * | 2014-07-18 | 2018-12-12 | 株式会社ヨコオ | 車載用アンテナ装置 |
US9899131B2 (en) * | 2015-07-20 | 2018-02-20 | Cyntec Co., Ltd. | Structure of an electronic component and an inductor |
JP7133311B2 (ja) * | 2017-12-28 | 2022-09-08 | 株式会社タムラ製作所 | リアクトル |
USD920912S1 (en) * | 2019-01-23 | 2021-06-01 | Sumida Corporation | Core component |
WO2020202542A1 (ja) * | 2019-04-04 | 2020-10-08 | 三菱電機株式会社 | 集中管理装置、機器制御システム、および、制御方法 |
US11554752B2 (en) * | 2019-09-03 | 2023-01-17 | Te Connectivity Solutions Gmbh | Wavetrap for a vehicle defroster system |
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JPH09213528A (ja) | 1996-01-29 | 1997-08-15 | Tokin Corp | チョークコイル |
JP2005086402A (ja) | 2003-09-08 | 2005-03-31 | Central Glass Co Ltd | アンテナ用コイル装置 |
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JP2700251B2 (ja) | 1988-07-26 | 1998-01-19 | 鐘淵化学工業株式会社 | 官能性末端を有するイソブチレン系ポリマーの製造法 |
JPH04298102A (ja) * | 1991-03-26 | 1992-10-21 | Nippon Sheet Glass Co Ltd | 自動車用ガラスアンテナ |
JPH0615322A (ja) | 1992-07-03 | 1994-01-25 | Sumitomo Metal Ind Ltd | 熱間圧延時の板クラウン制御方法 |
JPH10189350A (ja) * | 1996-12-24 | 1998-07-21 | Tokin Corp | チョークコイル |
JP2005295473A (ja) * | 2004-04-06 | 2005-10-20 | Toko Inc | アンテナコイル |
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2007
- 2007-03-14 JP JP2008517797A patent/JP4927835B2/ja active Active
- 2007-03-14 US US12/302,771 patent/US7920041B2/en active Active
- 2007-03-14 WO PCT/JP2007/055101 patent/WO2007138775A1/ja active Application Filing
- 2007-03-14 EP EP07738571.4A patent/EP2031697B1/en active Active
- 2007-03-14 CN CN2007800197408A patent/CN101454940B/zh active Active
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JPH0236204U (ja) * | 1988-09-02 | 1990-03-08 | ||
JPH0615322U (ja) * | 1992-07-24 | 1994-02-25 | 旭硝子株式会社 | 自動車ガラスアンテナコイル用端子装置 |
JPH09213528A (ja) | 1996-01-29 | 1997-08-15 | Tokin Corp | チョークコイル |
JP2005086402A (ja) | 2003-09-08 | 2005-03-31 | Central Glass Co Ltd | アンテナ用コイル装置 |
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See also references of EP2031697A4 |
Also Published As
Publication number | Publication date |
---|---|
CN101454940A (zh) | 2009-06-10 |
EP2031697A1 (en) | 2009-03-04 |
EP2031697A4 (en) | 2009-09-23 |
US20090195341A1 (en) | 2009-08-06 |
CN101454940B (zh) | 2012-07-18 |
JP4927835B2 (ja) | 2012-05-09 |
JPWO2007138775A1 (ja) | 2009-10-01 |
US7920041B2 (en) | 2011-04-05 |
EP2031697B1 (en) | 2017-12-06 |
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