WO2008035700A1 - Dispositif d'antenne de véhicule - Google Patents

Dispositif d'antenne de véhicule Download PDF

Info

Publication number
WO2008035700A1
WO2008035700A1 PCT/JP2007/068158 JP2007068158W WO2008035700A1 WO 2008035700 A1 WO2008035700 A1 WO 2008035700A1 JP 2007068158 W JP2007068158 W JP 2007068158W WO 2008035700 A1 WO2008035700 A1 WO 2008035700A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
door handle
vehicle
portable device
wireless portable
Prior art date
Application number
PCT/JP2007/068158
Other languages
English (en)
Japanese (ja)
Inventor
Kouichi Tsurumaki
Original Assignee
Alpha Corporation
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 Alpha Corporation filed Critical Alpha Corporation
Publication of WO2008035700A1 publication Critical patent/WO2008035700A1/fr

Links

Classifications

    • 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
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3283—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle side-mounted antennas, e.g. bumper-mounted, door-mounted
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • H01Q7/08—Ferrite rod or like elongated core

Definitions

  • the present invention relates to a vehicular antenna device applied to a keyless system that can perform door locking and unlocking of an automobile without a key.
  • the keyless entry system includes a wireless portable device carried by the vehicle owner, a vehicle antenna, a vehicle-side transceiver, and a vehicle-side control unit.
  • the keyless entry system communicates wirelessly between the wireless portable device and the vehicle-side transceiver.
  • the portable device is authenticated by the vehicle-side control unit, the door is automatically locked and unlocked.
  • Patent Document 1 Japanese Patent Publication No. 2006-197503
  • Patent Document 2 a system using a card wireless portable device composed of a multipurpose IC card. This system is disclosed in, for example, Japanese Patent Publication No. 3507153 (Patent Document 2). Since the communication frequency differs between a system using a key wireless handset and a system using a card wireless handset, two antennas (two types) are attached to the vehicle in order to be able to use both systems. It is necessary to install.
  • an object of the present invention is to provide a vehicle antenna device in which two (two types) antennas do not impede the performance of each antenna. It is in.
  • a vehicle antenna device according to the first aspect of the present invention.
  • a first antenna that transmits and receives radio waves with the first portable device; and a radio that transmits and receives radio waves with the second portable device, and the first antenna transmits and receives radio waves.
  • Second antenna having different frequency bands; In the above configuration, the first antenna and the second antenna are arranged such that directions of magnetic fields generated from each other are substantially orthogonal to each other.
  • the magnetic field generated by the first antenna and the magnetic field generated by the second antenna are substantially orthogonal to each other and are not adversely affected by mutual inductance.
  • the antenna does not hinder the performance of each antenna.
  • the vehicular antenna apparatus which is dependent on the first aspect, includes the first antenna and the second antenna housed in a door handle.
  • the vehicle antenna device that is dependent on the first aspect or the second aspect is the device, wherein the second antenna is a door handle body of the door handle and the first antenna. It is arranged between.
  • the force S can be accommodated in a compact housing of the first antenna and the second antenna.
  • the vehicle antenna device which is dependent on any one of the first aspect to the third aspect, is the device, wherein the first antenna is the door handle.
  • the first antenna is the door handle.
  • a rod-shaped core portion disposed along the longitudinal direction, and a pair of coil portions wound around both ends of the core portion; and in the center of the first antenna, the core portion and the pair of core portions A recess surrounded by the coil portion is formed; and the second antenna is disposed so as to enter the recess.
  • the force S can be further accommodated to further accommodate the first antenna and the second antenna.
  • FIG. 1 shows an embodiment of the present invention, and shows a door handle in which a vehicle antenna device is accommodated. It is a longitudinal cross-sectional view.
  • FIG. 2 is a cross-sectional view of a door handle in which a vehicle antenna device is housed according to an embodiment of the present invention.
  • FIG. 3 is a perspective view of the first antenna according to the embodiment of the present invention.
  • FIG. 4 is a perspective view of a second antenna, showing an embodiment of the present invention.
  • FIG. 5 is a diagram showing a magnetic field generated by the first antenna and the second antenna in the embodiment of the present invention.
  • FIG. 1 is a longitudinal sectional view of a door handle in which a vehicle antenna device is accommodated
  • FIG. 2 is a transverse sectional view of the door handle in which a vehicle antenna device is accommodated
  • 3 is a perspective view of the first antenna
  • FIG. 4 is a perspective view of the second antenna
  • FIG. 5 is a diagram showing the magnetic field generated by the first antenna and the second antenna.
  • a door handle 1 outside the door is composed of a handle body 2 and a cover handle 3 located outside the vehicle, and the grip handle that can be gripped by the operator as a whole as a whole. It has a saddle shape! The operator can open and close the door (not shown) by holding the door handle 1 and rotating it.
  • One end of the handle body 2 is pivotally supported by a base member (not shown) fixed to the door panel, and a lock engaging portion 2a is provided on the other end for engaging a lock mechanism (not shown).
  • the locking mechanism (not shown) can be changed between a locked position that prevents rotation of the door handle 1 located in the closed position in the opening direction and an unlocked position that allows rotation of the door handle 1 in the opening direction. Locking / unlocking state of the locking mechanism is controlled by control means (not shown).
  • a request switch 4 is provided on the outer surface of the handle body 2. The request switch 4 is a push-down switch, and this input information is output to control means (not shown). The detailed configuration of the control means will be described below.
  • the cover handle 3 is formed of, for example, an elastomer resin having flexibility, and is assembled to the handle body 2 by using, for example, a stagnation deformation.
  • the vehicle antenna device 10 is housed in the door handle 1 thus configured!
  • the vehicular antenna device 10 is a first antenna 11 in a low frequency band that transmits and receives communication radio waves to and from a key wireless portable device (not shown) that is a first portable device, and a second portable device. It has a second antenna 12 that transmits / receives communication radio waves to / from a card wireless portable device (not shown) having a non-contact IC force and has a frequency band different from that of the first antenna 11.
  • the first antenna 11 includes an antenna body 13 including a coil wound around a rod-shaped core member disposed along the longitudinal direction of the door handle 1, and the antenna body.
  • a pair of bobbins 14 and 14 are provided at both ends of 13.
  • Bobbins 14 and 14 are antenna holding members that hold the first antenna 11 and the second antenna 12 in the door handle 1, and are installed in the door handle 1 from the vibration of the vehicle and the impact when the door is opened and closed. It functions as a cushioning material to protect the first antenna 11 and the second antenna 12.
  • a recess 11a surrounded by the antenna body 13 and the pair of bobbins 14 and 14 is formed.
  • the first antenna 11 is disposed in the antenna holding frames 3a and 3b of the cover handle 3! /, And the mounting portion 13a extending from the antenna body 13 is locked to the locking portion 3c of the cover handle 3.
  • the first antenna 11 is attached to the cover handle 3.
  • the second antenna 12 includes a coil portion 15 wound in a ring shape, and a sealing resin portion 16 that seals the coil portion 15, and has an eccentric square shape as a whole. have .
  • the eccentric square-shaped second antenna 12 is arranged so as to enter the recess 11 a of the first antenna 11.
  • the second antenna 12 is bonded to the first antenna 11 with a double-sided tape 17. That is, the first antenna 11 and the second antenna 12 are accommodated in the door handle 1 as an integrated object.
  • the first antenna 11 and the second antenna 12 are arranged so that the directions of the magnetic fields generated from each other are substantially orthogonal.
  • the first antenna 11 and the second antenna 12 are transmitted and received on the vehicle body side via the cable 20.
  • the transmission / reception means on the vehicle body processes the received signals from the first antenna 11 and the second antenna 12 and outputs them to the control means (not shown).
  • the transmission signal is output to both the first antenna 11 and the second antenna 12 independently. That is, a wireless system that supports both key wireless portable devices (not shown) and card wireless portable devices (not shown) is configured! [0024]
  • the control means (not shown) outputs a communication start command to the transmission / reception means (not shown).
  • an ID signal is sent from the transmission / reception means, it is determined whether or not the ID signal matches a predetermined ID signal. If the ID signal matches, control is performed to change the locking / unlocking state of the lock mechanism. . That is, control is performed so as to change to the unlocked state if the lock mechanism is in the locked state and to the locked state if it is in the unlocked state.
  • the operation of the above configuration will be described.
  • the driver carrying the key wireless portable device (not shown) goes out of the vehicle, closes the door, Operates request switch 4.
  • the transmission / reception means operates to transmit a communication radio wave from the first antenna 11 and communicate with a key wireless portable device (not shown).
  • the control means (not shown) changes the lock mechanism (not shown) from the unlocked state to the locked state.
  • the driver or the like carrying the key wireless portable device (not shown) operates the quest switch 4.
  • the transmission / reception means operates to transmit a communication radio wave from the first antenna 11 and communicate with a key wireless portable device (not shown).
  • the control means (not shown) force S lock mechanism (not shown) is changed from the locked state to the unlocked state.
  • the card wireless portable device When locking / unlocking from outside the vehicle using a card wireless portable device (not shown), the card wireless portable device (not shown) should be brought close to the door handle 1! /.
  • the card wireless portable device comes close to the effective communication area formed by the radio wave emitted from the second antenna due to the proximity of the card wireless portable device, reading by electromagnetic induction is started, and induced electric power is transmitted to the card wireless portable device.
  • the control means controls locking and unlocking.
  • the first antenna 11 and the second antenna 12 of the vehicle antenna device 10 receive radio waves and transmit radio waves.
  • the first antenna 11 and the magnetic field generated by the second antenna 12 are almost perpendicular to each other and no magnetic force is generated in the same magnetic flux direction, there is an adverse effect due to the mutual inductance generated between the coils. Does not reach. Therefore, the first and second antennas 11 and 12 can perform good communication with the respective antennas without extremely reducing the communication performance due to the mutual inductance having the effect of suppressing the magnetic force.
  • the first antenna 11 and the second antenna 12 are accommodated in the door handle 1. Since the user is located near the door handle 1 when getting on and off, the user is excellent in communication with a key wireless portable device (not shown) or a card wireless portable device (not shown).
  • the first antenna 11 includes a rod-shaped antenna main body 13 arranged along the longitudinal direction of the door handle 1 and a pair of bobbins 14 provided at both ends of the antenna main body 13. , 14, and a concave portion 11a surrounded by the antenna body 13 and the pair of bobbins 14, 14 is formed at the center of the first antenna 11, and the second antenna 12 is inserted into the concave portion 11a. Has been placed. Therefore, the first antenna 11 and the second antenna 12 can be accommodated in a compact manner.
  • the first and second antennas 11 and 12 are attached via the double-sided tape 17, the first and second antennas 11 and 12 can be handled as a unit, and the door handle The accommodation work in 1 is easy.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Lock And Its Accessories (AREA)
  • Details Of Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

La présente invention concerne un dispositif d'antenne de véhicule placé dans une poignée de portière (1) ; il comprend une première antenne (11) qui transmet vers un dispositif mobile radio à clé une onde radio de communication et la reçoit de ce dispositif, ainsi qu'une seconde antenne (12) qui transmet une onde radio de communication à un dispositif mobile radio carte et la reçoit de ce dispositif. La seconde antenne (12) a une bande de fréquence différente de l'onde radio de transmission/réception de la première antenne (11). La première (11) et la seconde antenne (12) génèrent des champs magnétiques dont les directions sont pratiquement orthogonales.
PCT/JP2007/068158 2006-09-22 2007-09-19 Dispositif d'antenne de véhicule WO2008035700A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006257503A JP2008079118A (ja) 2006-09-22 2006-09-22 車両用アンテナ装置
JP2006-257503 2006-09-22

Publications (1)

Publication Number Publication Date
WO2008035700A1 true WO2008035700A1 (fr) 2008-03-27

Family

ID=39200525

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/068158 WO2008035700A1 (fr) 2006-09-22 2007-09-19 Dispositif d'antenne de véhicule

Country Status (2)

Country Link
JP (1) JP2008079118A (fr)
WO (1) WO2008035700A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010222841A (ja) * 2009-03-24 2010-10-07 Nissan Motor Co Ltd 車両施開錠装置
JP2019062372A (ja) * 2017-09-26 2019-04-18 株式会社Ｓｏｋｅｎ 複合アンテナ装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013125610A1 (fr) * 2012-02-24 2013-08-29 株式会社村田製作所 Dispositif d'antenne et dispositif de communication sans fil
JP5974767B2 (ja) 2012-09-21 2016-08-23 アイシン精機株式会社 ドアロック制御システム
DE112018008123T5 (de) * 2018-11-09 2021-07-22 Honda Motor Co., Ltd. Kommunikationssystem

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238004A (ja) * 1985-08-12 1987-02-19 Nissan Motor Co Ltd 車両用アンテナ
JP2001339224A (ja) * 2000-03-21 2001-12-07 Sumida Corporation 微小アンテナコイル
JP2002033614A (ja) * 2000-07-14 2002-01-31 Aisin Seiki Co Ltd ボビンおよびボビンを備えた２軸式ループアンテナ
JP2003163525A (ja) * 2001-11-28 2003-06-06 Aisin Seiki Co Ltd アンテナ装置
JP2003287570A (ja) * 2002-03-27 2003-10-10 Natl Inst For Land & Infrastructure Management Mlit 電波式レーンマーカ及びそれを用いたシステム
JP2003298348A (ja) * 2002-03-29 2003-10-17 Honda Denshi Giken:Kk アンテナ装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6238004A (ja) * 1985-08-12 1987-02-19 Nissan Motor Co Ltd 車両用アンテナ
JP2001339224A (ja) * 2000-03-21 2001-12-07 Sumida Corporation 微小アンテナコイル
JP2002033614A (ja) * 2000-07-14 2002-01-31 Aisin Seiki Co Ltd ボビンおよびボビンを備えた２軸式ループアンテナ
JP2003163525A (ja) * 2001-11-28 2003-06-06 Aisin Seiki Co Ltd アンテナ装置
JP2003287570A (ja) * 2002-03-27 2003-10-10 Natl Inst For Land & Infrastructure Management Mlit 電波式レーンマーカ及びそれを用いたシステム
JP2003298348A (ja) * 2002-03-29 2003-10-17 Honda Denshi Giken:Kk アンテナ装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010222841A (ja) * 2009-03-24 2010-10-07 Nissan Motor Co Ltd 車両施開錠装置
JP2019062372A (ja) * 2017-09-26 2019-04-18 株式会社Ｓｏｋｅｎ 複合アンテナ装置

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