WO2016093336A1 - Antenne embarquée - Google Patents

Antenne embarquée Download PDF

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Publication number
WO2016093336A1
WO2016093336A1 PCT/JP2015/084752 JP2015084752W WO2016093336A1 WO 2016093336 A1 WO2016093336 A1 WO 2016093336A1 JP 2015084752 W JP2015084752 W JP 2015084752W WO 2016093336 A1 WO2016093336 A1 WO 2016093336A1
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WO
WIPO (PCT)
Prior art keywords
antenna
vehicle
twisted pair
electric wires
wire
Prior art date
Application number
PCT/JP2015/084752
Other languages
English (en)
Japanese (ja)
Inventor
一孝 内藤
Original Assignee
株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社オートネットワーク技術研究所, 住友電装株式会社, 住友電気工業株式会社 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2016093336A1 publication Critical patent/WO2016093336A1/fr

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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
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Definitions

  • the present invention relates to a vehicle-mounted antenna.
  • a so-called keyless entry system which locks and unlocks the door of a vehicle by performing a remote operation wirelessly at a position away from the vehicle, has become widespread.
  • a radio wave transmitted from a transmitter possessed by a user is received by an antenna, and locked or unlocked based on the received signal.
  • the antenna is provided in a keyless control ECU (Electronic Controller Unit) installed in the instrument panel.
  • ECU Electronic Controller Unit
  • the number of ECUs mounted in the instrument panel tends to increase. For this reason, there exists a possibility that an antenna may not obtain a desired receiving characteristic under the influence of ECU mounted in the periphery.
  • Patent Document 1 discloses an antenna provided adjacent to a wire harness disposed inside a vehicle body.
  • This antenna includes a power feeding unit and an antenna unit.
  • the antenna portion appears from the end of the power feeding portion and is arranged in the front pillar of the vehicle. Therefore, it is difficult to be influenced by the ECU mounted in the instrument panel.
  • Patent Document 2 discloses an antenna.
  • This antenna has a power feeding portion made of a coaxial cable, an antenna portion arranged in the front pillar, and a ground wire arranged on the upper edge of the windshield glass. By placing the ground wire close to the wire harness, the reception sensitivity of the antenna can be improved.
  • Patent Documents 1 and 2 are provided close to the wire harness, and the core wire constituting the antenna part and the inner conductor of the power feeding part are connected by soldering. For this reason, the number of parts is large, and the assembly work takes time. Therefore, there is a risk of increasing design man-hours and costs. In addition, since the antenna portion is provided in the front pillar of the vehicle, there is room for improvement in reception sensitivity.
  • the present invention has been made in view of such circumstances, and an object thereof is to provide an in-vehicle antenna capable of reducing the number of parts.
  • the in-vehicle antenna according to the present invention is composed of a twisted pair wire obtained by twisting a part of each of two electric wires, and another portion of the two electric wires, and two linear shapes branched from the ends of the twisted pair wires. And an antenna portion having the above elements.
  • the number of parts of the in-vehicle antenna can be greatly reduced by configuring the in-vehicle antenna using two electric wires.
  • the on-vehicle antenna according to the present invention is characterized in that the antenna portion is mounted in a roof of a vehicle.
  • the present invention it is possible to improve the reception sensitivity by installing the antenna unit at a high position from the ground.
  • the on-vehicle antenna according to the present invention is characterized in that the antenna portion is a dipole antenna, and the two electric wires are branched at a central portion of a front side edge portion of the roof.
  • the transmission characteristics or reception characteristics of radio waves are less dependent on the vehicle type, and the antenna portion can be arranged at the same location regardless of the vehicle shape.
  • the vehicle-mounted antenna according to the present invention is characterized in that the two electric wires constitute a wire harness.
  • the vehicle-mounted antenna is created with a part of the wire harness, parts other than the wire harness are not required, and the labor of wiring can be reduced.
  • two linear elements that are constituted by twisted pair wires obtained by twisting a part of each of the two electric wires and other portions of the two electric wires and branched from the ends of the twisted pair wires.
  • the number of parts of the in-vehicle antenna can be greatly reduced.
  • FIG. 1 is a schematic diagram showing a configuration of an in-vehicle antenna 1 according to Embodiment 1 of the present invention. (Embodiment 1)
  • the in-vehicle antenna 1 is a receiving antenna used in a keyless entry system, and includes a twisted pair wire 2 and an antenna unit 3 as shown in FIG.
  • the twisted pair wire 2 is configured by twisting a part of each of the two electric wires 21 and 21 with insulation coating in a spiral shape.
  • the length of the twisted pair wire 2 is set as appropriate.
  • An antenna unit 3 is provided at one end of the twisted pair wire 2.
  • the antenna unit 3 is a so-called dipole antenna, and includes two linear elements 31 and 31.
  • the elements 31, 31 are constituted by other portions of the two electric wires 21, 21, and branch from the end of the twisted pair wire 2.
  • the angle formed by the two elements 31, 31 is about 180 degrees.
  • the length of each of the elements 31 and 31 is set to about 1 ⁇ 4 of the wavelength ⁇ of the radio wave used in the keyless entry system.
  • FIG. 2 is a perspective view showing the arrangement of the vehicle-mounted antenna 1 according to the first embodiment of the present invention.
  • the antenna unit 3 is installed in the roof 12 near the upper edge of the windshield glass 11 of the vehicle 10.
  • the elements 31 and 31 of the antenna section 3 are arranged so as to branch in the left-right direction of the vehicle 10 at the center of the front edge of the roof 12 substantially parallel to the upper edge of the windshield glass 11.
  • the twisted pair wire 2 extends from the branch point of the elements 31, 31 to the left side of the vehicle 10 substantially parallel to the upper edge of the windshield glass 11 of the antenna unit 3, passes through the front pillar 13 on the passenger seat side, and passes through the vehicle 10 It is connected to the receiver 4 installed in the instrument panel.
  • the receiver 4 is installed in the keyless control ECU 5.
  • a control signal is transmitted from a transmitter possessed by the user, the control signal is received by the antenna unit 3 and output to the receiver 4 through the twisted pair wire 2.
  • the receiver 4 amplifies the input control signal, converts it into a data signal, and gives it to the keyless control ECU 5.
  • the keyless control ECU 5 controls the locking or unlocking of the door, for example, by a door lock mechanism (not shown) based on the given data signal.
  • the twisted pair wire 2 is configured by using a part of each of the two electric wires 21 and 21, and the elements 31 and 31 of the antenna unit 3 are configured by using other portions of the two electric wires 21 and 21.
  • the number of parts of the vehicle-mounted antenna 1 can be significantly reduced. Therefore, the design man-hour and cost of the vehicle-mounted antenna 1 are reduced.
  • the receiving sensitivity can be improved by installing the antenna unit 3 in the roof 12 at a high position from the ground, compared to the case of installing in the front pillar 13.
  • the two electric wires 21 and 21 constituting the dipole antenna of the antenna unit 3 are branched at the center of the front edge of the roof 12, so that the radio wave transmission characteristics or reception characteristics depend on the vehicle type.
  • the antenna part 3 can be arranged at the same place regardless of the vehicle shape.
  • FIG. 3 is a schematic diagram showing the configuration of the in-vehicle antenna 100 according to the second embodiment of the present invention.
  • the two electric wires 21 and 21 constitute a vehicle-mounted wire harness 6.
  • the wire harness 6 is composed of a twisted pair wire 2 and a plurality of wires 61 each having a connector attached to both ends thereof by a binding band 62.
  • a plug 22 is connected to the other end of the twisted pair wire 2.
  • Plugs 32 and 32 are connected to the tips of the elements 31 and 31, respectively.
  • FIG. 4 is a schematic diagram showing the arrangement of the vehicle-mounted antenna 100 according to the second embodiment of the present invention.
  • FIG. 4 shows the windshield glass 11 viewed from the front of the vehicle 10.
  • the roof 12 see FIG. 2
  • receptacles 33 and 33 are arranged symmetrically in the vicinity of the upper edge of the windshield glass 11.
  • the distance between the receptacles 33 and 33 is substantially the same as the entire length of the two elements 31 and 31.
  • the plugs 32 and 32 are fitted in the receptacles 33 and 33, respectively. It is preferable that the plugs 32 and the receptacles 33 are configured in the same color, and the receptacles 33 and 33 arranged on the left and right sides are configured in different colors. Accordingly, when the two elements 31 and 31 are arranged in the roof 12, the connection destination of the plug 32 can be easily recognized, and the plug 32 and the receptacle 33 can be quickly connected.
  • the two electric wires 21 and 21 constitute the wire harness 6, no components other than the wire harness 6 for creating the in-vehicle antenna 100 are required, and the wiring in the vehicle 10 is not necessary. Time and effort can be reduced. Therefore, cost and design man-hours can be reduced.
  • the in-vehicle antenna 100 includes the plug 22, if the receptacle to which the plug 22 can be fitted is provided on the receiver 4 side, the twisted pair wire 2 and the receiver 4 can be easily connected. Therefore, the connection work to the receiver 4 is simplified.
  • the vehicle-mounted antenna 100 has the plugs 32 and 32 and the receptacle 33 is provided in the roof 12, each of the elements 31 and 31 can be easily and reliably fixed in the roof 12. Therefore, the assembly work in the vehicle 10 is simplified.
  • the plug 22 connected to the other end of the twisted pair wire 2 may be provided for each electric wire 21 or may not be provided. Further, instead of the plug 22, a receptacle may be provided on the other end of the twisted pair wire 2 and a plug may be provided on the receiver 4 side. In the second embodiment, instead of the plug 32, a receptacle may be provided at the tip of the element 31, and a plug may be provided on the roof 12 side.
  • the in-vehicle antennas 1 and 100 used in the keyless entry system have been described.
  • the present invention is not limited to the keyless entry system, and is also applied to smart entry (registered trademark) and the like.
  • the other end of the twisted pair wire 2 may be connected to a transmitter or a transmitter / receiver to use the present invention as a transmission antenna or a transmission / reception antenna.
  • the angle formed by the two elements 31, 31 is not limited to 180 degrees, and may be another angle set as necessary.
  • the length of each of the elements 31 and 31 is not limited to 1 ⁇ 4 of the wavelength, and may be appropriately adjusted according to the thickness of the electric wire 21 and the angle formed.
  • the installation position of the antenna unit 3 is not limited to the inside of the roof 12 near the upper end edge of the windshield glass 11, but may be another position in the roof 12.
  • the installation location of the receiver 4 is not limited to the inside of the instrument panel, but may be an appropriate place in the vehicle 10 as necessary.
  • the twisted pair wire 2 may be arranged according to the installation location of the receiver 4.
  • the twisted pair wire 2 may extend to the right of the vehicle 10 and may pass through the front pillar on the driver's seat side, or may pass through the B pillar of the vehicle 10.

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  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

L'invention concerne une antenne embarquée qui permet que le nombre de composants puisse être réduit. L'antenne embarquée 1 est pourvue d'un câble à paire torsadée 2 et d'une section antenne 3. Le câble à paire torsadée est formé par torsion ensemble d'une partie de chacun de deux fils électriques 21, 21. La section d'antenne 3 comporte deux éléments linéaires 31, 31, Les éléments 31, 31 sont respectivement constitués par les autres parties des deux fils électriques 21, 21 et se ramifient à partir de l'extrémité du câble à paire torsadée 2. Par utilisation de deux fils électriques pour former l'antenne embarquée 1, il est possible de réduire considérablement le nombre de composants dans l'antenne embarquée 1.
PCT/JP2015/084752 2014-12-11 2015-12-11 Antenne embarquée WO2016093336A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014251111A JP2016115982A (ja) 2014-12-11 2014-12-11 車載アンテナ
JP2014-251111 2014-12-11

Publications (1)

Publication Number Publication Date
WO2016093336A1 true WO2016093336A1 (fr) 2016-06-16

Family

ID=56107513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/084752 WO2016093336A1 (fr) 2014-12-11 2015-12-11 Antenne embarquée

Country Status (2)

Country Link
JP (1) JP2016115982A (fr)
WO (1) WO2016093336A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019054495A (ja) * 2017-09-19 2019-04-04 株式会社オートネットワーク技術研究所 車載装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54151151U (fr) * 1978-04-13 1979-10-20
JP2009084829A (ja) * 2007-09-28 2009-04-23 Denso Corp スマートキーシステム
WO2013186877A1 (fr) * 2012-06-13 2013-12-19 本田技研工業株式会社 Structure d'agencement d'antenne pour un appareil de communication de véhicule

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54151151U (fr) * 1978-04-13 1979-10-20
JP2009084829A (ja) * 2007-09-28 2009-04-23 Denso Corp スマートキーシステム
WO2013186877A1 (fr) * 2012-06-13 2013-12-19 本田技研工業株式会社 Structure d'agencement d'antenne pour un appareil de communication de véhicule

Also Published As

Publication number Publication date
JP2016115982A (ja) 2016-06-23

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