JPS6239905A - Antenna arranging structure for on-vehicle key system - Google Patents

Antenna arranging structure for on-vehicle key system

Info

Publication number
JPS6239905A
JPS6239905A JP17855585A JP17855585A JPS6239905A JP S6239905 A JPS6239905 A JP S6239905A JP 17855585 A JP17855585 A JP 17855585A JP 17855585 A JP17855585 A JP 17855585A JP S6239905 A JPS6239905 A JP S6239905A
Authority
JP
Japan
Prior art keywords
antenna
mirror
loop antenna
key system
vehicle
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP17855585A
Other languages
Japanese (ja)
Inventor
Kenji Kurihara
健二 栗原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP17855585A priority Critical patent/JPS6239905A/en
Publication of JPS6239905A publication Critical patent/JPS6239905A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/24Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/32Adaptation for use in or on road or rail vehicles
    • H01Q1/325Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3266Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle using the mirror of the vehicle
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00Loop 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
    • H01Q7/06Loop 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
    • H01Q7/08Ferrite rod or like elongated core

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Support Of Aerials (AREA)

Abstract

PURPOSE:To shield a loop antenna without losing the magnetic field performance by arranging at least one loop antenna in a space in the inside of a door mirror formed by a mirror housing and a mounting bracket supporting a mirror adjusting mechanism. CONSTITUTION:The mirror adjusting mechanism 12 if fitted to the mirror housing 15 via the mounting bracket 14, a prescribed gap is produced by a boss 17 between the mirror housing 15 and the mounting bracket 14 to form a space 18 in the mirror housing 15. An antenna 20 for the on-vehicle key system is arranged in the space 16. The antenna 20 is formed by arranging the 1st loop antenna 22 at the circumference of an antenna support 21 made of a resin and arranging a ferrite antenna 24 as the 2nd loop antenna at the inside of the 1st loop antenna 22 and fixed to the mirror housing 15 via the antenna support 21 and a screw 26.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、車両用キーシステムに係り、特に発生する磁
界の方向が互いに略直交するように配設した2つのルー
プアンテナからなる車両用キーシステムのアンテナ配設
構造に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a vehicle key system, and in particular to a vehicle key system comprising two loop antennas arranged so that the directions of the generated magnetic fields are substantially perpendicular to each other. Regarding the antenna arrangement structure of the system.

〔技術の背景〕[Technology background]

本願出願人は、従来より特開昭60−119873号等
により無線式利用者識別装置を用いた車両用キーシステ
ムを提案している。これは基本的には、車両利用者が所
持した携帯機から無線送出した固有コードを車載機で受
信し、予め記憶している固有コードと照合して車両利用
者を識別することにより車両のロック装置の施解錠の制
御を行なうようにしたものである。
The applicant of the present application has proposed a vehicle key system using a wireless user identification device in Japanese Patent Application Laid-open No. 60-119873 and the like. Basically, this locks the vehicle by receiving a unique code wirelessly transmitted from a mobile device carried by the vehicle user on the vehicle's onboard device, and comparing it with a pre-stored unique code to identify the vehicle user. It is designed to control the locking and unlocking of the device.

ここで、このキーシステムでは周辺無線装置への電波障
害を考慮して、距離減衰性の高い誘導電磁界を通信媒体
として利用し、ドアハンドル近傍等にリクエストコマン
ド信号送信用操作ボタンを取付け、車載機からの送信リ
クエストコマンド信号に基づき携帯機が固有コードを発
信するものである。そして車載機はこの固有コードを受
信して、車両用開閉体、例えばサイドドアの施解錠を行
うものである。そこで、携帯機及び車載機の双方にルー
プアンテナを装備する必要があるが、送受信時に発信側
のループアンテナと受信側のループアンテナとが直交状
態位置となった場合には受信側ループアンテナには誘導
電流が発生せず、通信が行われないこととなる。
In this key system, in consideration of radio wave interference to surrounding wireless devices, an inductive electromagnetic field with high distance attenuation is used as a communication medium, and an operation button for transmitting a request command signal is installed near the door handle. The portable device transmits a unique code based on a transmission request command signal from the device. The on-vehicle device receives this unique code and locks and unlocks a vehicle opening/closing body, for example, a side door. Therefore, it is necessary to equip both the portable device and the vehicle-mounted device with a loop antenna, but if the loop antenna on the transmitting side and the loop antenna on the receiving side are in orthogonal positions during transmission and reception, the receiving side loop antenna No induced current is generated and no communication occurs.

そこで、携帯機のループアンテナがどのような方向を向
いていても通信を可能とするため、車載側に2つのルー
プアンテナを略直交状態になるように配設するようにし
ている。
Therefore, in order to enable communication no matter what direction the loop antenna of the portable device faces, two loop antennas are arranged on the vehicle side so as to be substantially perpendicular to each other.

〔従来の技術〕[Conventional technology]

ところで、このような車両用キーシステムのアンテナの
配設構造としては、従来、第4図に示すものがある。こ
れは前記特開昭80−119873号において本願出願
人が提案したものである。これは、車両側に設けるべき
2つのループアンテナが形成する磁界方向が直交するよ
う、第1のループアンテナ1をサイドウィンドウパネル
2の一部にプリント配線するとともに、第2のループア
ンテナ3をドアミラー4のミラ−5周縁部に設けたもの
である。尚、7はドアハンドル、8はリクエストコマン
ド信号送信用の起動スイッチである。
Incidentally, as a conventional antenna arrangement structure for such a vehicle key system, there is one shown in FIG. 4. This was proposed by the applicant of the present invention in the above-mentioned Japanese Patent Laid-Open No. 80-119873. The first loop antenna 1 is printed on a part of the side window panel 2 so that the directions of the magnetic fields formed by the two loop antennas to be provided on the vehicle side are perpendicular to each other, and the second loop antenna 3 is printed on a side window panel 2. It is provided on the periphery of the mirror 5 of No. 4. Note that 7 is a door handle, and 8 is an activation switch for transmitting a request command signal.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

ところで、前記従来のアンテナ配設構造にあっては、ル
ープアンテナが車体の表側に露出しているので外観品質
を損なうという問題がある。
However, in the conventional antenna arrangement structure, there is a problem in that the loop antenna is exposed on the front side of the vehicle body, which impairs the appearance quality.

そこで、本発明の課題は車両側に設けるべきループアン
テナの磁界性能を損なうことなくループアンテナを隠蔽
する点にある。
Therefore, an object of the present invention is to hide the loop antenna without impairing the magnetic field performance of the loop antenna to be provided on the vehicle side.

〔問題点を解決するための手段〕[Means for solving problems]

前記問題点を解決してその課題を達成するため、本発明
は、発生する磁界の方向が互いに直交するように2つの
ループアンテナを車両に配設するに際し、少なくとも一
方のループアンテナをミラーハウジングとミラー調整用
機構を支持する取付ブラケットとが形成するドアミラー
内部の空間内に配設したものである。
In order to solve the above problems and achieve the object, the present invention provides that when two loop antennas are installed in a vehicle so that the directions of the generated magnetic fields are orthogonal to each other, at least one of the loop antennas is connected to a mirror housing. It is arranged in a space inside the door mirror formed by a mounting bracket that supports the mirror adjustment mechanism.

〔作用〕[Effect]

本発明によれば、ループアンテナはドアミラー内部に格
納されるので外部からは見えない。また、ドアミラーは
ドアハンドルおよびドアハンドル近傍に設けられるリク
エストコマンド信号送信用の起動スイッチの近傍個所に
あるから、車載機と携帯機との間の送受信を良好に行う
ことができる。
According to the present invention, the loop antenna is housed inside the door mirror and is therefore not visible from the outside. Further, since the door mirror is located near the door handle and the activation switch for transmitting a request command signal provided near the door handle, transmission and reception between the on-vehicle device and the portable device can be performed satisfactorily.

〔実施例〕〔Example〕

第1図および第2図は本発明に係るアンテナ配設構造の
一例を示すものである。この実施例に係るドアミラーD
は電動可倒式ドアミラーであり、実朝間58−1724
3号に示すように、ドアミラーDを格納復元作動させる
駆動モータおよび減速機構を収納した可倒機構10およ
びミラー11の鏡面調整を行うだめの駆動モータを収納
したミラー調整用機構12を有している。そして、この
ミラー調整用機構12は、取付ブラケット14を介して
ミラーハウジング15に取付けられるが、その際、ミラ
ーハウジング15と取付ブラケット14との間にはポス
17によって一定の隙間が生じ、ミラーハウジング15
内に空間18が形成される。
1 and 2 show an example of an antenna arrangement structure according to the present invention. Door mirror D according to this embodiment
is an electric folding door mirror, and is located at 58-1724 Jitsu-Ama.
As shown in No. 3, it has a retractable mechanism 10 housing a drive motor and a deceleration mechanism for operating the door mirror D to store and restore, and a mirror adjustment mechanism 12 housing a drive motor for adjusting the mirror surface of the mirror 11. There is. The mirror adjustment mechanism 12 is attached to the mirror housing 15 via the mounting bracket 14, but at this time, a certain gap is created between the mirror housing 15 and the mounting bracket 14 by the post 17, and the mirror housing 15
A space 18 is formed therein.

そこで、この空間18内に車両用キーシステムのアンテ
ナ20を配設するものである。このアンテナ20は、樹
脂等で成形されたアンテナ支持体21の周縁に第1のル
ープアンテナ22を配設し、他方、この第1のループア
ンテナ22の内側に第2のループアンテナとしてのフェ
ライトアンテナ24を配設したものであって、アンテナ
支持体21およびビス26を介してミラーハウジング1
5に固定される。第3図は、このアンテナ20の構成を
より明確にするための構成概念図である。第1のループ
アンテナ22と、第2のループアンテナとしてのフェラ
イトアンテナ24は、フェライトコア27を介して誘導
結合させるものであり、また、このフェライトコア27
には給電側のライン29も巻付けている。第2のループ
アンテナをフェライトアンテナ24として構成するのは
、前記空間18内に第1のループアンテナ22と直交す
る磁界を形成するような通常の(第1のループアンテナ
と同一形状の)ループアンテナを配設することはできな
いからである。また、第1のループアンテナ22とフェ
ライトアンテナ24を誘導結合させるのは、両アンテナ
の発生する磁界を安定的に直交させるためである。
Therefore, the antenna 20 of the vehicle key system is disposed within this space 18. This antenna 20 has a first loop antenna 22 disposed around the periphery of an antenna support 21 made of resin or the like, and a ferrite antenna as a second loop antenna inside the first loop antenna 22. 24, and the mirror housing 1 is connected to the mirror housing 1 via the antenna support 21 and screws 26.
It is fixed at 5. FIG. 3 is a conceptual diagram for making the structure of this antenna 20 clearer. The first loop antenna 22 and the ferrite antenna 24 as the second loop antenna are inductively coupled via a ferrite core 27.
A line 29 on the power supply side is also wound around. The second loop antenna is configured as a ferrite antenna 24 because it is a normal loop antenna (having the same shape as the first loop antenna) that forms a magnetic field orthogonal to the first loop antenna 22 in the space 18. This is because it is not possible to allocate. Further, the reason why the first loop antenna 22 and the ferrite antenna 24 are inductively coupled is to stably orthogonalize the magnetic fields generated by both antennas.

尚、アンテナ特性の調整はバリアプルコンデンサー30
を介して行うことになる。
The antenna characteristics can be adjusted using a barrier pull capacitor 30.
This will be done through.

従って、かかるアンテナ配設構造によれば、第1、第2
のループアンテナをドアミラーD内部に収納して隠蔽す
ることができるから、車体の外観品質を向」ニさせるこ
とができる。また前記空間18内にアンテナを配設すれ
ば、可倒機構10やミラー調整用機構12等の磁性体の
影響を受けることなく、直交する2つの磁界を形成する
ことができる。
Therefore, according to this antenna arrangement structure, the first and second
Since the loop antenna can be housed and hidden inside the door mirror D, the appearance quality of the vehicle body can be improved. Further, by disposing the antenna in the space 18, two orthogonal magnetic fields can be formed without being influenced by magnetic bodies such as the tilting mechanism 10 and the mirror adjustment mechanism 12.

尚、前記実施例においては、第1、第2のループアンテ
ナを両方ともドアミラー内に収納したが、本発明は少な
くとも一方のアンテナだけをドアミラー内に収納し、他
方のアンテナを他の場所に適宜配設できるものである。
In the above embodiment, both the first and second loop antennas were housed in the door mirror, but in the present invention, only one antenna is housed in the door mirror, and the other antenna is placed in another location as appropriate. It can be installed.

また、本発明は電動式ドアミラー以外の通常のドアミラ
ーにも同様に適用しうるちのである。
Further, the present invention can be similarly applied to ordinary door mirrors other than electric door mirrors.

〔発明の効果〕〔Effect of the invention〕

以−E説明したように、木発明は直交する2つの磁界を
形成する2つのループアンテナのうち、少なくとも一方
のループアンテナをドアミラー内に収納して隠蔽するか
ら、車両の外観品質を向上させることができるという効
果を奏するものである。
As explained above, in the invention, at least one of the two loop antennas forming two orthogonal magnetic fields is housed and hidden within the door mirror, thereby improving the appearance quality of the vehicle. This has the effect of making it possible to

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施例を示す第2図の■−■線断線断
面相当節2図は木発明の実施例を示すドアミラーの分解
斜視図、第3図は本発明の実施例に係るループアンテナ
の構成概念説明図、第4図は従来のキーシステムにおけ
るアンテナ配設構造を示す斜視図である。 11・・・ミラー 12・・・ミラー調整用機構 14・・・取付ブラケット 15・・・ミラーハウジング 20・・・アンテナ 21・・・アンテナ支持体 22・・・第1のループアンテナ 24・・・フェライトアンテナ (第2のループアンテナ) 特許出願人   日産自動車株式会社 第1図 イ 工1vl) ト) D(ドアミラー ) 12(ミクー8月咎J■ヤ転槙) :アンテナ)
Figure 1 shows an embodiment of the present invention. Figure 2 is an exploded perspective view of a door mirror showing an embodiment of the invention. Figure 3 is an exploded perspective view of a door mirror showing an embodiment of the invention. FIG. 4 is a diagram illustrating the configuration concept of a loop antenna, and is a perspective view showing an antenna arrangement structure in a conventional key system. DESCRIPTION OF SYMBOLS 11...Mirror 12...Mirror adjustment mechanism 14...Mounting bracket 15...Mirror housing 20...Antenna 21...Antenna support 22...First loop antenna 24... Ferrite antenna (second loop antenna) Patent applicant: Nissan Motor Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 発生する磁界の方向が互いに直交するように2つのルー
プアンテナを車両に配設するに際し、少なくとも一方の
ループアンテナをミラーハウジングとミラー調整用機構
を支持する取付ブラケットとが形成するドアミラー内部
の空間内に配設したことを特徴とする車両用キーシステ
ムのアンテナ配設構造。
When two loop antennas are installed in a vehicle so that the directions of the generated magnetic fields are orthogonal to each other, at least one of the loop antennas is installed in the space inside the door mirror formed by the mirror housing and the mounting bracket that supports the mirror adjustment mechanism. An antenna arrangement structure for a vehicle key system, characterized in that the antenna is arranged in a vehicle key system.
JP17855585A 1985-08-15 1985-08-15 Antenna arranging structure for on-vehicle key system Pending JPS6239905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17855585A JPS6239905A (en) 1985-08-15 1985-08-15 Antenna arranging structure for on-vehicle key system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17855585A JPS6239905A (en) 1985-08-15 1985-08-15 Antenna arranging structure for on-vehicle key system

Publications (1)

Publication Number Publication Date
JPS6239905A true JPS6239905A (en) 1987-02-20

Family

ID=16050530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17855585A Pending JPS6239905A (en) 1985-08-15 1985-08-15 Antenna arranging structure for on-vehicle key system

Country Status (1)

Country Link
JP (1) JPS6239905A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032355A1 (en) * 1996-03-01 1997-09-04 Toyota Jidosha Kabushiki Kaisha Antenna device for vehicles
US6078294A (en) * 1996-03-01 2000-06-20 Toyota Jidosha Kabushiki Kaisha Antenna device for vehicles
EP1467436A2 (en) * 2003-04-08 2004-10-13 Matsushita Electric Industrial Co., Ltd. Antenna device for vehicles and vehicle antenna system and communication system using the antenna device
JP2014064267A (en) * 2012-08-27 2014-04-10 Tdk Corp Antenna device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032355A1 (en) * 1996-03-01 1997-09-04 Toyota Jidosha Kabushiki Kaisha Antenna device for vehicles
US6078294A (en) * 1996-03-01 2000-06-20 Toyota Jidosha Kabushiki Kaisha Antenna device for vehicles
EP1467436A2 (en) * 2003-04-08 2004-10-13 Matsushita Electric Industrial Co., Ltd. Antenna device for vehicles and vehicle antenna system and communication system using the antenna device
EP1467436A3 (en) * 2003-04-08 2004-11-17 Matsushita Electric Industrial Co., Ltd. Antenna device for vehicles and vehicle antenna system and communication system using the antenna device
US6965352B2 (en) 2003-04-08 2005-11-15 Matsushita Electric Industrial Co., Ltd. Antenna device for vehicles and vehicle antenna system and communication system using the antenna device
JP2014064267A (en) * 2012-08-27 2014-04-10 Tdk Corp Antenna device

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