JP3737831B2 - Automotive antenna - Google Patents

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JP3737831B2
JP3737831B2 JP29736193A JP29736193A JP3737831B2 JP 3737831 B2 JP3737831 B2 JP 3737831B2 JP 29736193 A JP29736193 A JP 29736193A JP 29736193 A JP29736193 A JP 29736193A JP 3737831 B2 JP3737831 B2 JP 3737831B2
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Japan
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receiving groove
antenna
strip
locking claw
base
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JP29736193A
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Japanese (ja)
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JPH07131219A (en
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寿朗 猪子
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Maspro Denkoh Corp
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Maspro Denkoh Corp
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Description

【0001】
【産業上の利用分野】
本発明は自動車の外部に取付けてテレビ電波その他の電波の受信を行うために用いられる自動車用アンテナに関する。
【0002】
【従来の技術】
この種の自動車用アンテナは、自動車に対する取付部を備えるベースの上端に、アンテナ本体を側方から被せ付け状に取付ける為の横向きの差込条を具備させ、且つその差込条の両外側面には係合溝を備えさせ、一方アンテナ本体の下面には、上記差込条に対して側方から被せ付け得るよう側方の一端を開口させた受溝を備えさせ、且つその受溝の両内側面には上記係合溝に進入するようにした対応係止条を具備させ、上記受溝において上記開口端近くの部分の底面には、常時突出方向に付勢されている係止爪を出没自在に設け、一方上記差込条の上面において差込条に対する受溝の被せ付け完了状態で上記係止爪と対向する部分には上記係止爪を係合させる為の係合凹部を形成している(例えば特公平1−48685号公報参照)。
【0003】
このような自動車用アンテナにおいては、洗車機による洗車や路上駐車する場合に、上記係止爪を没入させて係合凹部との係合を解くことにより、アンテナ本体をベースから引き外して保管でき、上記洗車機によるアンテナの折損や、路上駐車時の盗難を防止することが出来る。
【0004】
【発明が解決しようとする課題】
しかし、上記構成にあっては、受溝における開口端近くの部分に上記係止爪を配置しているので、アンテナ本体をベースに装着する操作を行う場合には、受溝の開口端を差込条の端に対して適正に対応位置させることと、上記開口端近くにある係止爪を没入させることと、係止条の延長線上に係合溝を真っ直ぐに位置させること、この三つを全て満足させながら、受溝が差込条に被さるようアンテナ本体をベースに対してスライドさせるという操作を行わねばならず、ベースが自動車の比較的高い位置に取付けてある場合には、力の弱い婦女子では上記操作に非常に苦痛を感じる大きな問題点があった。
【0005】
本願発明は上記従来の技術的課題を解決する為になされたもので、ベースが自動車の比較的高い位置に取付けられている場合においても、単に差込条の先端を受溝の開口端に宛がい、受溝に対して差込条を真っ直ぐに位置させれば簡単に差込条を受溝に差込むことが出来るようにした自動車用アンテナを提供することを目的としている。
【0006】
【課題を解決するための手段】
本願発明における自動車用アンテナにあっては、ベース本体には、自動車に対する取付を行うための取付具を備えさせると共に、上記ベース本体の上面には、アンテナ本体の差込条を側方より差込み装着する為に、側方の一端が開口している凹状の断面形状をした受溝を具備させ、かつ、上記受溝を構成する為の両側の内壁面には、上記アンテナ本体の浮き上がり防止の為の凸状の係止条を備えさせ、さらに両側の内壁の夫々の外側には、間隔をあけて外壁を配設し、かつ、それらの外壁の上部は、夫々内側に位置する内壁の上部に連結させてあり、一方上記アンテナ本体の下端には、上記受溝に対して側方の開口部から上記受溝内に差込む為の上記差込条を備えさせ、且つ上記差込条の両外側面には上記係止条に対応する係合溝を具備させ、更に、上記差込条の下面には係合凹部を形成すると共に、上記受溝の底面において、上記受溝に対する上記差込条の差込完了状態において上記係合凹部と対向する部分には、上記係合凹部に対する係合の為に常時突出方向に付勢されている係止爪を出没自在に設け、上記係止爪の配設位置は、上記受溝に対し上記差込条を充分に差込んだ状態において上記差込条によって上記係止爪を没入操作できるように奥部に配設さらに、上記ベース本体の外壁には、上記係止爪を没入させて上記係合凹部から上記係止爪の係合を解除するための操作ボタンを備えさせたものである。
【0007】
【作用】
受溝から差込条を抜くとアンテナ本体はベースから離脱する。アンテナ本体をベースに装着する場合、受溝の開口端に差込条の端部を宛がい、受溝に対して差込条を真っ直ぐに位置させる。差込条をそのまま押し込めば受溝に対する差込条の差込ができる。差込が深くなると両者だけの関係で差込条の直進性が保たれる。このようになった後、差込条が係止爪に当接する。差込条の差込をそのまま進めると係止爪は没入され、差込条が所定位置まで差込を完了すると係止爪は係合凹部と係合する。
【0008】
【実施例】
以下本願の実施例を示す図面について説明する。図1は自動車用アンテナの使用状態を示すもので、1は自動車、2は一例として雨樋に取付けた自動車用アンテナを示す。トランクに取付ける場合もある。上記アンテナ2を詳細に示す図2乃至図4について説明する。アンテナ2は自動車に対する着脱を容易にするために、自動車に取り付けるベース3とそのベース3に着脱自在なアンテナ本体4との2要素で構成してある。先ずベース3について説明する。5は自動車に対する取付を行うための周知の取付具、6はベース本体で、両者は、自動車に対する取付具5の取付状態が傾いた状態となっても、ベース本体6を真っ直ぐな状態に出来るよう枢着具7例えばねじ棒でもって枢着してある。上記取付具5は例えば板金をプレスして形成されたものであり、8は自動車の雨樋或いはトランク蓋に対する取付部、9はベース本体6との連結片を示す。
【0009】
次に上記ベース本体6を詳細に示す図4、5、7について説明する。ベース本体6は、夫々絶縁性の硬質成形材料例えばプラスチック材料でもって形成された下側の第1要素11と上側の第2要素12とから構成され、両者は上記取付具5との連結の為の連結子13と共に結合具14例えばビスによって一体化してある。16はベース3の上面に具備させた受溝で、第2要素12に凹設してある。該受溝16はアンテナ本体4の差込条を側方より差込むために側方の一端17を開口させてある。
18は、図10に示されているように受溝16を構成する為の両側の内壁面に備えさせたアンテナ本体4の浮き上がり防止用の凸状の係止条である。さらに係止条18を備える両側の内壁の夫々の外側には、図10に示されているように間隔をあけて外壁を配設し、かつ、それらの外壁の上部は、夫々内側に位置する内壁の上部に連結させてある。
20は受溝16の底面に設けた係止爪で、上記底面に設けられた透孔21からの出没を自在に設けてある。上記係止爪20の出没自在の構成は、図8に示すように例えば係止爪20と一体に形成した被ガイド部22をガイド筒23によって上下にスライド自在に保持してあり、係止爪20自体も透孔21の孔縁によって上下にガイドしてある。24は係止爪20を突出方向に付勢するための付勢部材で、一例として円錐コイルばねを用いてある。尚係止爪20の飛び出しを防止するために、透孔21の孔縁をストッパとして利用し、そこに係止爪20に備えた係合部25を係合させてある。26は後述の差込条の差込によって係止爪20を没入操作する為の案内面で、受溝16の開口端17の側を向く斜面に構成してある。27は次に述べる解除機構30との連繋用の連繋片で、係止爪20と一体形成してある。尚上記係止爪20の配設位置は、後述のように受溝16に対して差込条51を差込む場合、その差込が充分に行われた状態において差込条51による係止爪20の没入操作が行われるよう奥部に配設してある。この奥部とは、上記係止爪20の没入操作が開始される場合に差込条51はその直進性が保たれる程度の深さに差込が行われている深さを言い、例えば受溝16の差込方向の深さの約半分以上の部分を言う。なお上記係止爪20は受溝16の内側面において出没自在に設けても良い。
【0010】
次に解除機構30を示す図10について説明する。尚図7、8においては図の輻輳を防ぐために解除機構の図示を省略してある。31は解除体で、図の横方向に例えばガイド部32,33に案内されて移動自在にしてある。34は押下部で、図示の如き斜面に形成され、上記連繋片27と対向させてある。35は連繋片27の自由な上下動を許すための欠如部である。36は解除体31に取付けた解除操作用のボタンである。次に図5に示す37,38はアンテナ本体4から受信信号を受け取る為の受端子で、図7の如く座39に跨座させてある。40は一端を上記受端子37,38に接続した給電線で、他端は自動車車内の受信機に接続される。
【0011】
次にアンテナ本体4を示す図2について説明する。該アンテナ本体4はアンテナ基部43と、アンテナ先部44とから構成され、前者の上部43aに対して後者の元部44aを、アンテナ先部44をアンテナ基部43の側面への添え付けを可能に二つ折り状に折り曲げ自在に連結してある。アンテナ基部43の長さL1はアンテナ先部44の長さL2にほぼ対応する長さに形成してある。例えば各々の長さL1,L2は、二つ折りによるアンテナ本体4の短小化の効果が大きく、且つ二つ折り状態において、弱体なアンテナ先部44の全長が丈夫なアンテナ基部43によって保護されるよう、L1がL2よりもやや大きい程度のほぼ同等の長さとしてある。上記アンテナ基部43は丈夫な構成となるよう箱状に形成され、例えば図2の(B)に示す四周の壁面47〜50は、上記アンテナ先部44に比較して丈夫に構成してある。そのためには、上記壁面の構成材料として硬質のものを用いたり、厚みを大きくしたりする等の方法を採ることが出来る。上記アンテナ基部43は符号45,46で示すように例えば2要素を合着させて構成する。それらの要素の構成材料は、後述のように電波の受信のための部材を内蔵する目的から夫々電波を透過する材料例えばプラスチック材料で形成する。
【0012】
次にアンテナ本体4の下部の構成を示す図4、6、7について説明する。51はアンテナ本体4の下端に備えさせた差込条で、上記受溝16への開口端17から内部への差込が可能なように、図10に記載された上方が開口されている受溝16の凹状の断面形状に対応した断面形状に構成してある。52は差込条51の両外側面に前記係止条18に対応して形成した係合溝である。53は上記係止爪20との係合のために、係止爪20の位置に対応して差込条51の下面に形成した係合凹部である。係止爪20を受溝16の内側面に備える場合には、該凹部53も差込条51の外側面に設ける。54,55はアンテナ本体4の底部に備えた夫々第1及び第2の給電点で、前記受端子37,38との接続のために各々の一部をアンテナ本体4の下面に露出させて接続端子54a,55aとしてある。
【0013】
次にアンテナ先部44の構成を示す図2について説明する。該アンテナ先部44は自動車の走行時における風の抵抗を小さくするために細い線状に形成してある。57は基材で、素子体58の保持のためのものである。素子体58は、機械的には細い形状のままで電気的には板状の素子と同等となって受信帯域幅が拡大されるよう、二つの素子片59,59を平行に並べて構成してある。両素子片59の先端相互は機械的な一体化のために、絶縁材料製の連結体65で連結してある。上記素子片59は例えば柔軟性を持たせるために図14に示すように構成してある。60は受信用の素子として電気的に作用する線状導電体で、柔軟性を保持した状態での屈曲が自在で且つ屈曲状態でも電気的な長さが変わらぬよう、例えば細い導電性の線材でもって構成した芯62(図示の如く複数本が束になっていても或いは1本の構成でも良い)の周囲を、導電性の細い線材で構成したコイル体63で包囲して構成してある。64は耐候性向上のための被覆材で、例えばポリエチレンである。
【0014】
次にアンテナ基部43とアンテナ先部44との連結部を示す図11〜13について説明する。この部分は、両者間での電気的な接続を維持した状態で両者を屈曲可能にするよう以下のように構成してある。アンテナ基部43の上部に備えた枢支部67とアンテナ先部44の基材57に備えた枢着用の腕部68,69とは、枢着具として例示するボルト70で枢連結してある。ボルト70の先端は腕部69に備えた(例えばインサート)ナット部材71と螺合させてある。72はウエーブワッシャである。74は腕部69の内面に備えた通電部材で、例えば導電性の良好な金属材料で形成される。75は通電部材74と素子片59の線状導電体60とを電気接続するための接続体で、通電部材74と一体形成してある。76は枢支部67における腕部69側の空所67aに位置させたもう一つの通電部材で、上記通電部材74に対接させてあり、そこでの保持のために、一体形成の止め片76aを枢支部67に備えた止め部67bに止着してある。77は後述の素子要素接続用の接続端子である。78は上記通電部材76を通電部材74に両者の電気的接続のために押し付ける押付部材で、例えばコイルばねが用いてある。このような構成により、アンテナ先部44はアンテナ基部43に対し、枢着具70を軸として屈曲自在であり、しかもどのような屈曲状態においても通電部材76が通電部材74に押し付けられて両者間での良好な電気的導通状態が保たれる。尚、導電部材76に設けた波形の凹凸状の歯形98と導電部材74に設けた波形の凹凸状の歯形99とは、押付部材78による押し付けによって噛み合うようになっている。アンテナ先部44を図2の矢印97方向に調整する場合、歯形99が歯形98に係脱しながら横滑りして通電部材76に対し通電部材74が回動する為、アンテナ基部43に対するアンテナ先部44の回動は段階的な感触となる(クリック感がある)。調整完了状態では、歯形98,99が噛み合い、アンテナ基部43に対してアンテナ先部44が不用意に下がらぬようにその位置を保持させる。
【0015】
次に上記自動車用アンテナ2においてアンテナとしての電気的作用を行う部材の構成を示す図15について説明する。81は第1の素子要素で、導電性の線材例えば通常の被覆銅線をもって構成してあり、一端を第1の給電点54に、他端を接続端子77に夫々接続してある。82はVHFのローバンドに対する延長コイル83とUHFのテレビ信号の通過用のコンデンサ84とから構成される並列共振回路で、第1の素子要素81において、給電点54から上記UHFのテレビ信号の波長の1/4の箇所に介設してある。85は第2の素子要素で、一端は第2の給電点55に、他端はVHFのハイバンドに対する短縮コンデンサ86を介して接続端子77に夫々接続してある。
【0016】
次に図16は上記自動車用アンテナ2の電気的構成を示すもので、91は第1の素子を示し、上記第1の素子要素81と素子片59における線状導電体60とで構成されており、その長さは、給電点54から延長コイル83までの長さL3が上記したように上記UHFの波長の1/4倍、その先の部分の全体の長さL4がUHFの波長の5/8倍となっている。実寸ではL3が110mm、L3とL4を加えた全体の長さL5が400mmとなっている。延長コイル83の値は、上記第1の素子91の電気的長さをVHFのローバンドの波長のほぼ1/4倍にする値に選定してある。92は第2の素子で、上記第2の素子要素82をもって構成してある。第2の給電点55から該第2の素子92を経て第1の素子91の先端に至るまでの長さL6は、上記UHFの波長の7/8倍としてあり、上記短縮コンデンサ86の値は、上記長さL6の部分の電気的長さをVHFのハイバンドの波長のほぼ1/4倍にする値に選定してある。上記第1の素子91において、第1の給電点54から第2の素子92がコンデンサ86を介して接続された中間部74,76までの長さL7は例えば上記長さL5の半分よりもやや長い220mmである。
【0017】
上記構成のものにあっては、図1の如き使用中においては上記の各素子で受信されたVHFのローバンド及びハイバンドのテレビ信号やUHFのテレビ信号は、接続端子54a,54bから受端子37,38に与えられ、給電線40を通して自動車の車内の受信機に引き込まれる。受信機においては、各受端子から到来する信号の内、強度的あるは質的に良好なものを周知の如く適宜選択しテレビ受信に用いる。この場合アンテナ先部44を図2の矢印97の如く上下に動かして感度が大きくなるように調節すると良い。
【0018】
自動車を洗車機で洗車する場合や路上駐車する場合、アンテナ本体4をベース3から外し、破損や盗難を防止する。外し方は、図10の(B)の如く両側の操作ボタン36を押し込むと、解除体31の押下部34によって連繋片27が押し下げられるため、係止爪20が図の如く透孔21内に没入し、係合凹部53との係合が解ける。この状態で、他方の手によりアンテナ本体4を図8の矢印95方向に移動させれば、差込条51が受溝16から抜け、アンテナ本体4をベース3から分離することが出来る。このようにして外したアンテナ本体4は図17の如く二つ折りに折り畳んで小型化し、例えば上着のポケット96に入れて邪魔にならぬようにすることが出来る。この場合、図17、18から明らかなように線状で弱体なアンテナ先部44は箱状で丈夫なアンテナ基部43に寄り添った状態となっているため、アンテナ先部44の素子片59が大きい外力によって図17に破線で示す如く撓まされても、それはアンテナ基部43に接触する状態まで弾力的な復元が可能な範囲で変形するのみで、それ以上の大きな変形が防止され、破損に至ることを防止する。
【0019】
次に上記アンテナ本体4をベース3に再装着する場合は、先ず図9の(A)に示すように、差込条51の先端51aを受溝16の開口端17に宛がい、係止条18の延長線上に係合溝52を位置させる。この場合、図の如く先端51aを受溝16の底面16a上に乗せ、そこを支点にして、係止条18の延長線上に係合溝52を位置させる操作を行えるため、操作が容易である。次にアンテナ本体4をベース3に対して図9の(B)の矢印の如く進め、差込条51を受溝16に差込む。差込が充分に深くなると差込条51の先端51aが係止爪20に到達するに至る。そうなってもそのまま差込操作を継続する。すると斜面26によって係止爪20はばね24の付勢力に抗して押し下げられ、やがて図8の如く差込が完了すると係止爪20は上昇して係合凹部53に係合し、差込条51が受溝16から抜けることを防止する状態となる。尚係止爪20は受溝16の奥部に設けてあるから、上記のように差込条51が係止爪20を押し下げる場合、差込条51は受溝16に既に深く入り込んで、係止条18と係合溝52とによる差込条51の真っ直ぐな進行が案内される状態となっているため、操作者は単に差込を深めることに専念すれば良く、操作が容易である。
【0020】
【発明の効果】
以上のように本願発明にあっては、自動車1を洗車する場合や路上駐車する場合においては、係止爪20を没入させて係合凹部53との係合を解くことにより、アンテナ本体4の差込条51をベース3の受溝16から引き抜いてアンテナ本体4を自動車1から外すことができ、洗車機による折損事故や盗難を予め防止できる効果がある。
【0021】
一方上記のように外したアンテナ本体4をベース3に装着する場合は、受溝16の開口端17に差込条51の端部51aを宛がうと共に、受溝16に対して差込条51を真っ直ぐに位置させれば、後はそのまま差込条51を押し込むだけの操作で受溝16に対する差込条51の差込を行うことが出来、しかも受溝16に対して差込条51が十分に差込まれてそれら両者だけの関係でもって差込条51の直進性が保たれる状態に至ったとき(即ち使用者の手によって直進性を保つ必要が無くなったとき)に初めて係止爪20を没入させるようにしてあるので、自動車1の高位置に取付けられたベース3に対し力の弱い婦女子がアンテナ本体4を取付ける場合においても容易に上記受溝16に対する差込条51の完全な差込を完了させ得る効果がある。
【0022】
さらに本願発明にあっては、自動車に対する取付部を備えるベース3の上面に設ける受溝16は、凹状の断面形状にし、一方、アンテナ本体4の下端に備えさせる差込条51は、凹状の断面形状にしてある受溝16の内側に差込むことが出来るように形成したものであるから、受溝16も丈夫にできるが、アンテナ本体4の下端に備えさせる差込条51も丈夫な構造となり、その上小嵩になる特長がある。
繰返えすと、一般に凹状の断面形状をした受溝16における両側の周壁上端は、機械的強度が弱いものであるが、本願発明にあっては、受溝16は、自動車に取付けるべきベース3の側に備えさせるものであるから、大嵩になっても、或いは重量が重くなっても、その点の制限はなく、例えば壁面を分厚くしたり、二重にする等、丈夫な構造に構成できる特長がある。
一方、アンテナ本体4の下端に備えさせる差込条51は、本願発明にあっては上記受溝16の内側に納めるように形成するものであり、かつ、係止爪20等の可動部分は、上記自動車側の受溝16の構造に備えさせるものであるから、必然、その全体形状は小嵩になり、その構造は、丈夫なブロック状に形成できるので、アンテナ本体4を取り外して持ち歩く場合においても、小嵩な差込条51は邪魔になる度合いが極めて少なくなる効果があり、その上、差込条51に他物がぶっつかり、衝撃が加えられても壊れる度合いは少なく、長寿命なアンテナとして利用できる効果がある。
【図面の簡単な説明】
【図1】 使用状態を示す斜視図。
【図2】 (A)はアンテナ本体の斜視図、(B)は(A)におけるII−II線断面図。
【図3】 ベースとアンテナ本体下部とを示す側面図。
【図4】 ベースとアンテナ本体下部との関係を示す斜視図。
【図5】 ベースの平面図。
【図6】 アンテナ本体下部の斜視図。
【図7】 図5、6におけるVII−VII線位置の断面図。
【図8】 図5におけるVIII−VIII線位置の断面図。
【図9】 (A)、(B)は受溝に対する差込条の差込過程を示す断面図。
【図10】 (A)は図5におけるX−X線位置の断面図、(B)は解除操作用のボタンを押し込んだ状態を示す同様の断面図。
【図11】 アンテナ基部とアンテナ先部との連結部の構造を示す断面図。
【図12】 アンテナ基部とアンテナ先部との連結部の斜視図。
【図13】 アンテナ基部とアンテナ先部との連結部の分解斜視図。
【図14】 素子片の構造を示す一部破断斜視図。
【図15】 アンテナとしての電気的作用を行う部材の構成を示す斜視図。
【図16】 アンテナの電気的構成を示す図。
【図17】 アンテナ本体を二つ折り状に折り曲げた状態を示す側面図。
【図18】 図17においてアンテナ本体を矢印XVIII方向から見た状態を示す図。
【符号の説明】
3 ベース
4 アンテナ本体
16 受溝
20 係止爪
51 差込条
[0001]
[Industrial application fields]
The present invention relates to an automobile antenna that is attached to the outside of an automobile and used for receiving television radio waves and other radio waves.
[0002]
[Prior art]
This type of automobile antenna is provided with a lateral insertion strip for attaching the antenna body from the side to the upper end of a base having a mounting portion for the vehicle, and both outer side surfaces of the insertion strip. Is provided with an engaging groove, and on the other hand, the lower surface of the antenna body is provided with a receiving groove whose one end on the side is opened so as to be able to cover the insertion strip from the side. Both inner side surfaces are provided with corresponding locking strips that enter the engaging grooves, and the locking claws that are constantly urged in the protruding direction on the bottom surface of the receiving groove near the opening end. On the other hand, on the upper surface of the insertion strip, an engaging recess for engaging the locking claw is provided at a portion facing the locking claw in a state where the receiving groove is attached to the insertion strip. (For example, refer to Japanese Patent Publication No. 1-448685).
[0003]
In such an automobile antenna, when the car is washed by a car wash machine or parked on the road, the antenna body can be removed from the base and stored by immersing the locking claw and releasing the engagement with the engagement recess. It is possible to prevent breakage of the antenna by the car wash machine and theft during parking on the street.
[0004]
[Problems to be solved by the invention]
However, in the above configuration, since the locking claw is disposed near the opening end of the receiving groove, when the antenna body is attached to the base, the opening end of the receiving groove is not connected. Properly corresponding position with respect to the end of the ridge, immersing the locking claw near the opening end, and positioning the engagement groove straight on the extension line of the locking ridge. The antenna body must be slid with respect to the base so that the receiving groove covers the insertion strip while satisfying all of the above. There was a big problem with the weak women who felt very painful in the above operation.
[0005]
The present invention has been made to solve the above-mentioned conventional technical problems. Even when the base is mounted at a relatively high position in the automobile, the tip of the insertion strip is simply addressed to the opening end of the receiving groove. However, an object of the present invention is to provide an automobile antenna in which the insertion strip can be easily inserted into the receiving groove if the insertion strip is positioned straight with respect to the receiving groove.
[0006]
[Means for Solving the Problems]
In the automotive antenna in the present invention, the base body, with equip a fixture for performing attachment to an automobile, the upper surface of the base body is inserted mounting from the side of the plug strip of the antenna body to, is provided with a receiving groove which has a concave cross-sectional shape with one end of the side is opened, and, on the inner wall surface of both sides for forming the receiving groove, for preventing floating of the antenna body And the outer walls are arranged on the outer sides of the inner walls on both sides with a space therebetween, and the upper portions of the outer walls are respectively located on the upper portions of the inner walls located on the inner side. Yes ligated, whereas the lower end of the antenna main body, let comprises the Sakomijo for plugged through the opening in the receiving groove of the side with respect to the receiving groove, and the insertion strip both The outer surface is provided with an engaging groove corresponding to the above-mentioned locking strip. Furthermore, with the lower surface of the insertion strip forming the engagement recess in the bottom surface of the receiving groove, with the engagement recess portion facing the at insertion completion state of the plug strip with respect to the receiving groove is the engagement provided a locking pawl which is biased at all times projecting direction for engagement with engagement recess retractably, arrangement position of the locking pawl is sufficiently above Sakomijo to the receiving groove In the inserted state, the locking claw is disposed in the back so that the locking claw can be operated by the insertion strip, and further, the locking claw is inserted into the outer wall of the base main body from the engagement recess. An operation button for releasing the engagement of the locking claw is provided .
[0007]
[Action]
When the insertion strip is removed from the receiving groove, the antenna body is detached from the base. When the antenna body is mounted on the base, the end of the insertion strip is directed to the opening end of the receiving groove, and the insertion strip is positioned straight with respect to the receiving groove. If the insertion strip is pushed in as it is, the insertion strip can be inserted into the receiving groove. When the insertion becomes deeper, the straightness of the insertion strip is maintained only by the relationship between the two. After this, the insertion strip comes into contact with the locking claw. When the insertion of the insertion strip is advanced as it is, the locking claw is immersed, and when the insertion strip is completely inserted to a predetermined position, the locking claw engages with the engagement recess.
[0008]
【Example】
Hereinafter, drawings showing examples of the present application will be described. FIG. 1 shows a use state of an automobile antenna. 1 shows an automobile, and 2 shows an automobile antenna attached to a gutter as an example. Sometimes installed on the trunk. 2 to 4 showing the antenna 2 in detail will be described. The antenna 2 is composed of two elements, a base 3 attached to the automobile and an antenna body 4 detachably attached to the base 3 in order to facilitate attachment to and detachment from the automobile. First, the base 3 will be described. 5 is a well-known fixture for mounting on a car, 6 is a base body, and both can make the base body 6 straight even if the mounting state of the mount 5 on the car is tilted. It is pivotally attached with a pivoting tool 7 such as a screw rod. The fixture 5 is formed, for example, by pressing a sheet metal, 8 is a mounting portion for a rain gutter or trunk lid of an automobile, and 9 is a connecting piece with the base body 6.
[0009]
Next, FIGS. 4, 5, and 7 showing the base body 6 in detail will be described. The base body 6 is composed of a lower first element 11 and an upper second element 12 each formed of an insulating hard molding material, for example, a plastic material, both of which are connected to the fixture 5. The connector 13 is integrated with a coupler 14 such as a screw. A receiving groove 16 is provided on the upper surface of the base 3 and is recessed in the second element 12. The receiving groove 16 has a side end 17 opened to insert the insertion strip of the antenna body 4 from the side.
Reference numeral 18 denotes a convex locking strip for preventing the antenna body 4 from being lifted, provided on the inner wall surfaces on both sides for forming the receiving groove 16 as shown in FIG. Further, outer walls are arranged at intervals on the outer sides of the inner walls on both sides including the locking strip 18, as shown in FIG. 10, and the upper portions of the outer walls are located on the inner side. It is connected to the upper part of the inner wall.
Reference numeral 20 denotes a locking claw provided on the bottom surface of the receiving groove 16, which is freely provided in and out of the through hole 21 provided on the bottom surface. As shown in FIG. 8, the locking claw 20 can be moved up and down, for example, a guided portion 22 formed integrally with the locking claw 20 is slidable up and down by a guide cylinder 23, and the locking claw 20 20 itself is also guided up and down by the hole edge of the through hole 21. Reference numeral 24 denotes an urging member for urging the locking claw 20 in the protruding direction, and a conical coil spring is used as an example. In order to prevent the locking claw 20 from popping out, the hole edge of the through hole 21 is used as a stopper, and the engaging portion 25 provided in the locking claw 20 is engaged therewith. Reference numeral 26 denotes a guide surface for immersing the locking claw 20 by inserting a later-described insertion strip, and is configured as an inclined surface facing the opening end 17 side of the receiving groove 16. Reference numeral 27 denotes a connecting piece for connecting to the release mechanism 30 described below, and is integrally formed with the locking claw 20. In addition, when the insertion strip 51 is inserted into the receiving groove 16 as will be described later, the locking claw 20 is disposed at a position where the insertion tab 51 is sufficiently inserted. It is arranged in the back so that 20 immersion operations can be performed. This back part means the depth at which the insertion strip 51 is inserted to such a depth that the straightness is maintained when the immersion operation of the locking claw 20 is started, for example, It refers to a portion that is about half or more of the depth of the receiving groove 16 in the insertion direction. The locking claw 20 may be provided so as to be able to appear and retract on the inner surface of the receiving groove 16.
[0010]
Next, FIG. 10 showing the release mechanism 30 will be described. 7 and 8, the release mechanism is not shown in order to prevent the congestion in the figure. Reference numeral 31 denotes a releasing body, which is guided by, for example, guide portions 32 and 33 in the horizontal direction in the figure so as to be movable. Reference numeral 34 denotes a pressing portion which is formed on a slope as shown in the figure and is opposed to the connecting piece 27. Reference numeral 35 denotes a lack for allowing the connecting piece 27 to freely move up and down. Reference numeral 36 denotes a release operation button attached to the release body 31. Next, reference numerals 37 and 38 shown in FIG. 5 are receiving terminals for receiving a reception signal from the antenna body 4 and are straddled on the seat 39 as shown in FIG. Reference numeral 40 denotes a power supply line having one end connected to the receiving terminals 37 and 38, and the other end connected to a receiver in the car.
[0011]
Next, FIG. 2 showing the antenna body 4 will be described. The antenna body 4 includes an antenna base portion 43 and an antenna tip portion 44. The latter base portion 44a can be attached to the former upper portion 43a, and the antenna tip portion 44 can be attached to the side surface of the antenna base portion 43. It is connected in a foldable manner. The length L1 of the antenna base 43 is formed so as to substantially correspond to the length L2 of the antenna tip 44. For example, each of the lengths L1 and L2 has a great effect of shortening the antenna body 4 by being folded in two, and in a folded state, the entire length of the weak antenna tip 44 is protected by the strong antenna base 43. L1 is substantially the same length that is slightly larger than L2. The antenna base portion 43 is formed in a box shape so as to have a strong configuration. For example, the four-side wall surfaces 47 to 50 shown in FIG. 2B are configured to be stronger than the antenna tip portion 44. For this purpose, it is possible to adopt a method such as using a hard material as the constituent material of the wall surface or increasing the thickness. The antenna base 43 is formed by, for example, joining two elements as indicated by reference numerals 45 and 46. The constituent materials of these elements are each formed of a material that transmits radio waves, such as a plastic material, for the purpose of incorporating a member for receiving radio waves as described later.
[0012]
Next, FIGS. 4, 6, and 7 showing the configuration of the lower portion of the antenna body 4 will be described. Reference numeral 51 denotes an insertion strip provided at the lower end of the antenna body 4. The upper portion shown in FIG. 10 is opened so that insertion from the open end 17 into the receiving groove 16 is possible. The cross-sectional shape corresponding to the concave cross-sectional shape of the groove 16 is configured. 52 is an engagement groove formed on both outer side surfaces of the insertion strip 51 corresponding to the locking strip 18. Reference numeral 53 denotes an engagement recess formed on the lower surface of the insertion strip 51 in correspondence with the position of the locking claw 20 for engagement with the locking claw 20. When the locking claw 20 is provided on the inner side surface of the receiving groove 16, the concave portion 53 is also provided on the outer side surface of the insertion strip 51. Reference numerals 54 and 55 denote first and second feed points provided at the bottom of the antenna body 4, respectively, and are connected to the receiving terminals 37 and 38 by exposing a part of each of them to the lower surface of the antenna body 4. Terminals 54a and 55a are provided.
[0013]
Next, FIG. 2 showing the configuration of the antenna tip 44 will be described. The antenna tip 44 is formed in a thin line shape in order to reduce wind resistance when the automobile is running. 57 is a base material for holding the element body 58. The element body 58 is configured by arranging two element pieces 59 and 59 in parallel so that the reception bandwidth is expanded to be equivalent to a plate-like element while maintaining a mechanically thin shape. is there. The ends of both element pieces 59 are connected by a connecting body 65 made of an insulating material for mechanical integration. For example, the element piece 59 is configured as shown in FIG. 14 in order to provide flexibility. 60 is a linear conductor that acts electrically as a receiving element. For example, a thin conductive wire that can be flexed in a flexible state and the electrical length does not change even in the bent state. Thus, the periphery of the core 62 (a plurality of bundles may be bundled as shown in the figure or may be a single structure) is surrounded by a coil body 63 formed of a thin conductive wire. . 64 is a coating material for improving weather resistance, for example, polyethylene.
[0014]
Next, FIGS. 11 to 13 showing a connecting portion between the antenna base 43 and the antenna tip 44 will be described. This portion is configured as follows so that both can be bent while maintaining electrical connection between them. The pivot support 67 provided on the upper portion of the antenna base 43 and the pivot-mounted arms 68 and 69 provided on the base material 57 of the antenna tip 44 are pivotally connected by a bolt 70 exemplified as a pivot attachment. The distal end of the bolt 70 is screwed into a nut member 71 (for example, insert) provided in the arm portion 69. 72 is a wave washer. Reference numeral 74 denotes an energizing member provided on the inner surface of the arm portion 69, and is formed of, for example, a metal material having good conductivity. Reference numeral 75 denotes a connection body for electrically connecting the energization member 74 and the linear conductor 60 of the element piece 59 and is integrally formed with the energization member 74. 76 is another energizing member located in the space 67a on the arm 69 side in the pivotal support 67, and is in contact with the energizing member 74. For holding there, an integrally formed stop piece 76a is provided. It is fixed to a stopper 67b provided on the pivot 67. Reference numeral 77 denotes a connection terminal for connecting element elements to be described later. Reference numeral 78 denotes a pressing member that presses the current-carrying member 76 against the current-carrying member 74 for electrical connection between them. For example, a coil spring is used. With such a configuration, the antenna tip portion 44 can be bent with respect to the antenna base portion 43 with the pivot attachment 70 as an axis, and in any bent state, the energizing member 76 is pressed against the energizing member 74, so that Good electrical continuity at is maintained. The corrugated uneven tooth profile 98 provided on the conductive member 76 and the corrugated uneven tooth profile 99 provided on the conductive member 74 are engaged with each other by pressing with the pressing member 78. When the antenna tip 44 is adjusted in the direction of arrow 97 in FIG. 2, the tooth profile 99 slides sideways while being engaged with the tooth profile 98, and the power supply member 74 rotates with respect to the power supply member 76. Rotation of has a stepped feel (click feeling). In the adjustment completed state, the tooth profiles 98 and 99 are engaged with each other, and the antenna base portion 43 is held at the position so that the antenna tip portion 44 does not fall carelessly.
[0015]
Next, FIG. 15 which shows the structure of the member which performs the electrical effect | action as an antenna in the said vehicle antenna 2 is demonstrated. Reference numeral 81 denotes a first element element, which is composed of a conductive wire, for example, a normal coated copper wire, and has one end connected to the first feeding point 54 and the other end connected to the connection terminal 77. 82 is a parallel resonant circuit composed of an extension coil 83 for the VHF low band and a capacitor 84 for passing the UHF television signal. In the first element element 81, the wavelength of the UHF television signal from the feeding point 54 is shown. It is inserted at a quarter. Reference numeral 85 denotes a second element element having one end connected to the second feeding point 55 and the other end connected to the connection terminal 77 via a shortening capacitor 86 for the high band of VHF.
[0016]
Next, FIG. 16 shows the electrical configuration of the automobile antenna 2, wherein 91 denotes a first element, which is composed of the first element element 81 and the linear conductor 60 in the element piece 59. The length L3 from the feeding point 54 to the extension coil 83 is 1/4 times the wavelength of the UHF as described above, and the entire length L4 of the portion beyond that is 5 times the wavelength of the UHF. / 8 times. In actual size, L3 is 110 mm, and the total length L5 including L3 and L4 is 400 mm. The value of the extension coil 83 is selected so as to make the electrical length of the first element 91 approximately ¼ times the VHF low band wavelength. Reference numeral 92 denotes a second element having the second element element 82. A length L6 from the second feeding point 55 to the tip of the first element 91 through the second element 92 is 7/8 times the wavelength of the UHF, and the value of the shortening capacitor 86 is The electrical length of the length L6 is selected to be a value that is approximately 1/4 times the wavelength of the VHF high band. In the first element 91, the length L7 from the first feeding point 54 to the intermediate portions 74 and 76 to which the second element 92 is connected via the capacitor 86 is, for example, slightly longer than half of the length L5. It is 220 mm long.
[0017]
With the above configuration, VHF low-band and high-band television signals and UHF television signals received by the above-described elements during use as shown in FIG. 1 are received from the connection terminals 54a and 54b through the receiving terminal 37. , 38 and is drawn through the feeder 40 into the in-car receiver. In the receiver, among signals coming from the receiving terminals, those having good strength or quality are appropriately selected as is well known and used for television reception. In this case, the antenna tip 44 is preferably moved up and down as indicated by an arrow 97 in FIG.
[0018]
When the car is washed with a car wash machine or parked on the road, the antenna body 4 is removed from the base 3 to prevent damage or theft. 10B, when the operation buttons 36 on both sides are pushed in, the connecting piece 27 is pushed down by the pressing portion 34 of the release body 31, so that the locking claw 20 is placed in the through hole 21 as shown. It is immersed and the engagement with the engagement recess 53 is released. In this state, if the antenna body 4 is moved in the direction of arrow 95 in FIG. 8 by the other hand, the insertion strip 51 can be removed from the receiving groove 16 and the antenna body 4 can be separated from the base 3. The antenna body 4 thus removed can be folded in two as shown in FIG. 17 to be miniaturized, and placed in a pocket 96 of an outer jacket so as not to get in the way. In this case, as apparent from FIGS. 17 and 18, the linear and weak antenna tip 44 is in a state of being close to the box-like and strong antenna base 43, so that the element piece 59 of the antenna tip 44 is large. Even if it is bent as shown by a broken line in FIG. 17 due to an external force, it only deforms within a range in which it can be elastically restored until it comes into contact with the antenna base 43, and further large deformation is prevented, resulting in breakage. To prevent that.
[0019]
Next, when the antenna body 4 is remounted on the base 3, first, as shown in FIG. 9A, the tip 51 a of the insertion strip 51 is directed to the open end 17 of the receiving groove 16, and the locking strip The engagement groove 52 is positioned on the 18 extension lines. In this case, as shown in the figure, the tip 51a is placed on the bottom surface 16a of the receiving groove 16, and the operation can be performed easily by positioning the engaging groove 52 on the extended line of the locking strip 18 with the tip 51a as a fulcrum. . Next, the antenna body 4 is advanced with respect to the base 3 as shown by the arrow in FIG. 9B, and the insertion strip 51 is inserted into the receiving groove 16. When the insertion becomes sufficiently deep, the tip 51a of the insertion strip 51 reaches the locking claw 20. Even if that happens, the insertion operation is continued. Then, the locking claw 20 is pushed down against the urging force of the spring 24 by the slope 26, and when the insertion is completed as shown in FIG. 8, the locking claw 20 rises and engages with the engagement recess 53, and the insertion is performed. The state is such that the strip 51 is prevented from coming out of the receiving groove 16. Since the locking claw 20 is provided at the back of the receiving groove 16, when the insertion strip 51 pushes down the locking claw 20 as described above, the insertion strip 51 has already entered the receiving groove 16 deeply, Since the straight advance of the insertion strip 51 by the stop strip 18 and the engagement groove 52 is guided, the operator only has to concentrate on deepening the insertion, and the operation is easy.
[0020]
【The invention's effect】
As described above, in the present invention, when the automobile 1 is washed or parked on the road, the engagement of the engagement claw 20 is released and the engagement with the engagement recess 53 is released. The insertion strip 51 can be pulled out from the receiving groove 16 of the base 3 and the antenna body 4 can be removed from the automobile 1, and there is an effect that a breakage accident and theft by the car wash machine can be prevented in advance.
[0021]
On the other hand, when the antenna body 4 removed as described above is attached to the base 3, the end 51 a of the insertion strip 51 is directed to the opening end 17 of the receiving groove 16 and the insertion strip is inserted into the receiving groove 16. If 51 is positioned straight, then the insertion strip 51 can be inserted into the receiving groove 16 by simply pushing the insertion strip 51, and the insertion strip 51 can be inserted into the receiving groove 16. Is inserted for the first time when it is fully inserted and the straightness of the plug 51 is maintained (ie when it is no longer necessary to maintain straightness by the user's hand). Since the pawl 20 is made to immerse, the female 51 having a weak force with respect to the base 3 attached to the high position of the automobile 1 can easily attach the insertion strip 51 to the receiving groove 16 even when the antenna body 4 is attached. There is an effect that complete insertion can be completed.
[0022]
Further, in the present invention, the receiving groove 16 provided on the upper surface of the base 3 provided with the mounting portion for the automobile has a concave cross-sectional shape, while the insertion strip 51 provided at the lower end of the antenna body 4 has a concave cross-section. Since it is formed so that it can be inserted inside the receiving groove 16 that is shaped, the receiving groove 16 can also be strong, but the insertion strip 51 provided at the lower end of the antenna body 4 has a strong structure. In addition, there is a feature that makes it small.
If it repeats, generally the upper end of the surrounding wall of the both sides in the receiving groove 16 which has a concave cross-sectional shape is a thing with weak mechanical strength, but in this invention, the receiving groove 16 is the base 3 which should be attached to a motor vehicle. There is no limitation on this point even if it becomes bulky or heavy in weight, for example, it has a strong structure such as thickening the wall or making it double. There is a feature that can be.
On the other hand, the insertion strip 51 provided at the lower end of the antenna body 4 is formed so as to be accommodated inside the receiving groove 16 in the present invention, and the movable part such as the locking claw 20 is Since it is provided for the structure of the receiving groove 16 on the automobile side, the entire shape is inevitably small, and since the structure can be formed into a strong block shape, when the antenna body 4 is removed and carried around However, the bulky insertion strip 51 has the effect of extremely reducing the degree of obstruction, and in addition, other items collide with the insertion strip 51. There is an effect that can be used as an antenna.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a use state.
2A is a perspective view of an antenna body, and FIG. 2B is a cross-sectional view taken along line II-II in FIG.
FIG. 3 is a side view showing a base and a lower portion of an antenna body.
FIG. 4 is a perspective view showing the relationship between the base and the lower part of the antenna body.
FIG. 5 is a plan view of a base.
FIG. 6 is a perspective view of the lower part of the antenna body.
7 is a cross-sectional view taken along line VII-VII in FIGS.
8 is a cross-sectional view taken along line VIII-VIII in FIG.
9A and 9B are cross-sectional views showing the process of inserting the insertion strip into the receiving groove.
10A is a cross-sectional view taken along line XX in FIG. 5, and FIG. 10B is a similar cross-sectional view illustrating a state where a release operation button is pushed in.
FIG. 11 is a cross-sectional view showing a structure of a connecting portion between an antenna base and an antenna tip.
FIG. 12 is a perspective view of a connecting portion between an antenna base and an antenna tip.
FIG. 13 is an exploded perspective view of a connecting portion between an antenna base and an antenna tip.
FIG. 14 is a partially broken perspective view showing a structure of an element piece.
FIG. 15 is a perspective view showing a configuration of a member that performs an electrical operation as an antenna.
FIG. 16 is a diagram showing an electrical configuration of an antenna.
FIG. 17 is a side view showing a state where the antenna body is folded in half.
18 is a view showing a state in which the antenna body is viewed from the direction of arrow XVIII in FIG.
[Explanation of symbols]
3 Base 4 Antenna body
16 Groove
20 Locking claw
51 plug-in

Claims (1)

ベース本体には、自動車に対する取付を行うための取付具を備えさせると共に、上記ベース本体の上面には、アンテナ本体の差込条を側方より差込み装着する為に、側方の一端が開口している凹状の断面形状をした受溝を具備させ、かつ、
上記受溝を構成する為の両側の内壁面には、上記アンテナ本体の浮き上がり防止の為の凸状の係止条を備えさせ、
さらに両側の内壁の夫々の外側には、間隔をあけて外壁を配設し、かつ、それらの外壁の上部は、夫々内側に位置する内壁の上部に連結させてあり、
一方上記アンテナ本体の下端には、上記受溝に対して側方の開口部から上記受溝内に差込む為の上記差込条を備えさせ、
且つ上記差込条の両外側面には上記係止条に対応する係合溝を具備させ、
更に、上記差込条の下面には係合凹部を形成すると共に、
上記受溝の底面において、上記受溝に対する上記差込条の差込完了状態において上記係合凹部と対向する部分には、上記係合凹部に対する係合の為に常時突出方向に付勢されている係止爪を出没自在に設け、
上記係止爪の配設位置は、上記受溝に対し上記差込条を充分に差込んだ状態において上記差込条によって上記係止爪を没入操作できるように奥部に配設
さらに、上記ベース本体の外壁には、上記係止爪を没入させて上記係合凹部から上記係止爪の係合を解除するための操作ボタンを備えさせたことを特徴とする自動車用アンテナ。
The base body, with equip a fixture for performing attachment to an automobile, the upper surface of the base body, in order to insert mounted from a side of the plug strip of the antenna main body, one end of the lateral opening A receiving groove having a concave cross-sectional shape, and
The inner wall surface on both sides for forming the receiving groove, let includes a convex engaging Tomejo for preventing floating of the antenna body,
Further, outside the inner walls on both sides, outer walls are arranged at intervals, and the upper parts of the outer walls are connected to the upper parts of the inner walls located inside, respectively.
On the other hand, the lower end of the antenna main body, let comprises the Sakomijo for plugged from the opening of the side in the receiving groove with respect to the receiving groove,
And on both outer surfaces of the insertion strip is provided with a engaging groove corresponding to the engaging Tomejo,
Furthermore, while forming an engagement recessed part in the lower surface of the said insertion strip,
In the bottom surface of the receiving groove, the said engagement recess portion facing the at insertion completion state of the plug strip with respect to the receiving groove, is always urged projecting direction for engagement with said engaging recess The locking claw that is
Arrangement position of the locking pawl is disposed on the inner part so immersive operating the latching claws by said difference Komijo in a state forme sufficiently difference the Sakomijo to the receiving groove,
Further, the automobile antenna is characterized in that an operation button for releasing the engagement of the locking claw from the engaging recess is provided on the outer wall of the base body .
JP29736193A 1993-11-02 1993-11-02 Automotive antenna Expired - Fee Related JP3737831B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29736193A JP3737831B2 (en) 1993-11-02 1993-11-02 Automotive antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29736193A JP3737831B2 (en) 1993-11-02 1993-11-02 Automotive antenna

Publications (2)

Publication Number Publication Date
JPH07131219A JPH07131219A (en) 1995-05-19
JP3737831B2 true JP3737831B2 (en) 2006-01-25

Family

ID=17845507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29736193A Expired - Fee Related JP3737831B2 (en) 1993-11-02 1993-11-02 Automotive antenna

Country Status (1)

Country Link
JP (1) JP3737831B2 (en)

Also Published As

Publication number Publication date
JPH07131219A (en) 1995-05-19

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