JP3382913B2 - Rod antenna - Google Patents
Rod antennaInfo
- Publication number
- JP3382913B2 JP3382913B2 JP2000046322A JP2000046322A JP3382913B2 JP 3382913 B2 JP3382913 B2 JP 3382913B2 JP 2000046322 A JP2000046322 A JP 2000046322A JP 2000046322 A JP2000046322 A JP 2000046322A JP 3382913 B2 JP3382913 B2 JP 3382913B2
- Authority
- JP
- Japan
- Prior art keywords
- conductive element
- fitting
- conductive
- rod
- shape
- 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.)
- Expired - Fee Related
Links
Landscapes
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、携帯無線機等の小
型通信機器に設けられる伸縮可能なロッドアンテナに関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable rod antenna provided in a small communication device such as a portable wireless device.
【０００２】[0002]
【従来の技術】従来のロッドアンテナとして、図４に示
すように、ロッド状の第１の導電性エレメント１０１
と、この第１の導電性エレメント１０１より径が小さい
ロッド状の第２の導電性エレメント１０２と、これらの
第１の導電性エレメント１０１と第２の導電性エレメン
ト１０２の接続部に設けられ両端面が開口されている筒
体状の接続金具１０３とを有するロッドアンテナであっ
て、第１の導電性エレメント１０１は中空のロッド形状
に構成され、第２の導電性エレメント１０２は第１の導
電性エレメント１０１の内部に移動可能に嵌合され、か
つ、接続金具１０３は第１の導電性エレメント１０１の
端部に外から嵌合した状態において接続金具１０３の側
部の一部を内部方向にカシメられてカシメ部を形成され
ているものが知られている。また、従来のロッドアンテ
ナとして、図４に示すように、ロッド状の第１の導電性
エレメント１０１と、この第１の導電性エレメント１０
１より径が小さいロッド状の第２の導電性エレメント１
０２と、これらの第１の導電性エレメント１０１と第２
の導電性エレメント１０２の接続部に設けられ両端面が
開口されている筒体の接続金具１０３とを有するロッド
アンテナであって、第１の導電性エレメント１０１は中
空のロッド形状に構成され、第２の導電性エレメント１
０２は第１の導電性エレメント１０１の内部に移動可能
に嵌合され、かつ、接続金具１０３は第１の導電性エレ
メント１０１の端部に外から嵌合した状態において接続
金具の内側部を第１の導電性エレメントの１０１外周面
に接着剤により接着してなるものが知られている。2. Description of the Related Art As a conventional rod antenna, as shown in FIG. 4, a rod-shaped first conductive element 101 is used.
And a rod-shaped second conductive element 102 having a diameter smaller than that of the first conductive element 101, and both ends provided at a connecting portion between the first conductive element 101 and the second conductive element 102. A rod antenna having a tubular connection fitting 103 having an open surface, wherein the first conductive element 101 is formed into a hollow rod shape, and the second conductive element 102 is a first conductive element. Part 101 of the connecting metal fitting 103 is movably fitted inside the flexible element 101, and the connecting fitting 103 is fitted to the end of the first conductive element 101 from the outside. It is known that caulking is performed to form a caulking portion. Further, as a conventional rod antenna, as shown in FIG. 4, a rod-shaped first conductive element 101 and this first conductive element 10 are provided.
Rod-shaped second conductive element 1 having a diameter smaller than 1
02, and these first conductive element 101 and second
And a cylindrical connecting fitting 103 provided at a connecting portion of the conductive element 102 and having both end surfaces opened, wherein the first conductive element 101 is formed into a hollow rod shape. 2 conductive elements 1
02 is movably fitted inside the first conductive element 101, and the connecting metal fitting 103 is connected to the end portion of the first conductive element 101 from the outside so that the inner portion of the connecting metal fitting is It is known that the conductive element No. 1 is bonded to the outer peripheral surface 101 with an adhesive.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
前者のロッドアンテナにおいては、接続金具１０３を第
１の導電性エレメント１０１の端部に外から嵌合した状
態において、接続金具１０３の側部の一部が内部方向に
カシメられてカシメ部が形成されているから、このカシ
メ部の変形の度合いが小さい場合には接続金具１０３の
側部の一部と第１の導電性エレメント１０１とが十分に
係合されないので、接続金具１０３が第１の導電性エレ
メント１０１から外れてしまうという問題がある。ま
た、従来の前者のロッドアンテナにおいては、接続金具
１０３のカシメ部の変形の度合いが大きい場合には、接
続金具１０３の側部の一部が第１の導電性エレメント１
０１を押圧するから、第２の導電性エレメント１０２が
第１の導電性エレメント１０１の内部を摺動する時に第
２の導電性エレメント１０２と第１の導電性エレメント
１０１との摩擦により第２の導電性エレメント１０２の
外径が細くなるという問題がある。従来の後者のロッド
アンテナにおいては、接続金具１０３は第１の導電性エ
レメント１０１の端部に外から嵌合した状態において接
続金具１０３の内側部を第１の導電性エレメント１０１
の外周面に接着剤により接着してなるから、ロッドアン
テナの製造時に接着剤が第１の導電性エレメント１０１
の内部に入り込んでしまい、また、ロッドアンテナの製
造時に接着剤が他のものに付着し、かつ、接着剤が絶縁
性を有する場合には電気的接続性が不安定な状態または
絶縁状態となるため、ロッドアンテナの製造が困難であ
るという問題がある。本発明の課題は、前記問題を解決
することにある。すなわち、本発明の目的は、製造が容
易であり、接続金具が第１の導電性エレメントから外れ
るのを防止し、かつ、第２の導電性エレメントの外径が
細くなることを防止することができるロッドアンテナを
提供することにある。However, in the former rod antenna of the related art, when the connecting fitting 103 is fitted from the outside to the end portion of the first conductive element 101, the side fitting of the connecting fitting 103 is reduced. Since a part is crimped inwardly to form a crimped portion, when the degree of deformation of the crimped portion is small, a part of the side portion of the connection fitting 103 and the first conductive element 101 are sufficient. Therefore, there is a problem that the connection fitting 103 is disengaged from the first conductive element 101 because it is not engaged with. In the former rod antenna of the related art, when the degree of deformation of the caulking portion of the connecting fitting 103 is large, a part of the side portion of the connecting fitting 103 is the first conductive element 1.
Since 01 is pressed, when the second conductive element 102 slides inside the first conductive element 101, the friction between the second conductive element 102 and the first conductive element 101 causes the second conductive element 102 to slide. There is a problem that the outer diameter of the conductive element 102 becomes thin. In the latter rod antenna of the related art, when the connecting fitting 103 is fitted to the end of the first conductive element 101 from the outside, the inner portion of the connecting fitting 103 is connected to the first conductive element 101.
Since the adhesive is attached to the outer peripheral surface of the rod antenna, the adhesive is used as the first conductive element 101 when manufacturing the rod antenna.
If the adhesive adheres to other things during the manufacturing of the rod antenna and the adhesive has an insulating property, the electrical connectivity becomes unstable or becomes an insulating state. Therefore, there is a problem that it is difficult to manufacture the rod antenna. An object of the present invention is to solve the above problems. That is, an object of the present invention is to facilitate manufacturing, prevent the connecting fitting from coming off the first conductive element, and prevent the outer diameter of the second conductive element from becoming thin. It is to provide a rod antenna that can.
【０００４】[0004]
【課題を解決するための手段】前記課題を解決するため
に、請求項１に記載の発明は、ロッド状の第１の導電性
エレメントと、この第１の導電性エレメントより径が小
さいロッド状の第２の導電性エレメントと、前記第１の
導電性エレメントと第２の導電性エレメントの接続部に
設けられ両端面が開口されている中空筒体状の接続金具
と、を有するロッドアンテナであって、前記第１の導電
性エレメントは、可撓性を有する長い導電性線状体がピ
ッチが密になるようにスパイラル状に巻かれることによ
り中空のロッド形状に構成され、かつ、前記導電性線状
体の軸方向断面形状が小判状、楕円形状、または、円形
状であり、前記第２の導電性エレメントは、前記第１の
導電性エレメントの内部に移動可能に嵌合され、前記接
続金具は、内部に前記第１の導電性エレメントの外周部
の螺旋溝と螺合する雌ねじ部を有し、前記第２の導電性
エレメントが前記接続金具の内部を挿通し、かつ、前記
接続金具の前記雌ねじ部が前記第１の導電性エレメント
の外周部の螺旋溝と螺合した状態において前記接続金具
の側部の一部を内部方向にカシメたカシメ部が形成され
ていることを特徴とする。請求項２に記載の発明は、ロ
ッド状の第１の導電性エレメントと、この第１の導電性
エレメントより径が小さいロッド状の第２の導電性エレ
メントと、前記第１の導電性エレメントと第２の導電性
エレメントの接続部に設けられ両端面が開口されている
中空筒体状の第１の接続金具と、前記第１の導電性エレ
メントの他の端部に設けられ少くとも一端面が開口され
ている中空筒体状の第２の接続金具と、を有するロッド
アンテナであって、前記第１の導電性エレメントは、可
撓性を有する長い導電性線状体がピッチが密になるよう
にスパイラル状に巻かれることにより中空のロッド形状
に構成され、かつ、前記導電性線状体の軸方向断面形状
が小判状、楕円形状、または、円形状であり、前記第２
の導電性エレメントは、前記第１の導電性エレメントの
内部に移動可能に嵌合され、前記第１の接続金具は、内
部に前記第１の導電性エレメントの外周部の螺旋溝と螺
合する第１の雌ねじ部を有し、前記第２の導電性エレメ
ントが前記第１の接続金具の内部を挿通し、かつ、前記
第１の接続金具の前記第１の雌ねじ部が前記第１の導電
性エレメントの外周部の螺旋溝と螺合した状態において
前記第１の接続金具の側部の一部を内部方向にカシメた
第１のカシメ部を形成され、前記第２の接続金具は、内
部に前記第１の導電性エレメントの外周部の螺旋溝と螺
合する第２の雌ねじ部を有し、前記第２の接続金具の前
記第２の雌ねじ部が前記第１の導電性エレメントの外周
部と螺合した状態において前記第２の接続金具の側部の
一部を内部方向にカシメた第２のカシメ部が形成されて
いることを特徴とする。In order to solve the above-mentioned problems, the invention according to claim 1 provides a rod-shaped first conductive element and a rod-shaped rod having a diameter smaller than that of the first conductive element. in the second and the conductive element, the first conductive element and the rod antenna having a hollow cylindrical body shaped fitting both end surfaces are opened is provided in the connection portion of the second conductive elements The first conductive element is formed into a hollow rod shape by winding a flexible long conductive linear body in a spiral shape so that the pitch is dense, and The axial section of the elastic linear body is oval, elliptical, or circular, and the second conductive element is movably fitted inside the first conductive element, and The connection fitting is inside The outer peripheral portion of the serial first conductive element
Has a female threaded portion to be screwed into the spiral groove , the second conductive element is inserted through the inside of the connection fitting, and the female threaded portion of the connection fitting is an outer peripheral portion of the first conductive element. In the state of being screwed with the spiral groove of No. 3, a caulking portion is formed by caulking a part of the side portion of the connecting fitting inward. According to a second aspect of the present invention, a rod-shaped first conductive element, a rod-shaped second conductive element having a diameter smaller than that of the first conductive element, and the first conductive element. A hollow cylindrical first connection fitting provided at the connection portion of the second conductive element and having both end surfaces open, and at least one end surface provided at the other end portion of the first conductive element. there a rod antenna having a hollow cylindrical body shaped second connection fitting being opened, wherein the first conductive element, a flexible long conductive linear member is a dense pitch having Is formed into a hollow rod shape by being spirally wound so that the axial cross section of the conductive linear body is oval, elliptical, or circular.
The conductive element is movably fitted inside the first conductive element, and the first connecting fitting is internally screwed into the spiral groove of the outer peripheral portion of the first conductive element. having a first internally threaded portion, said second conductive element is inserted through the inside of the first fitting, and the first female screw portion is the first conductive of said first connection fitting A first caulking portion is formed by caulking a part of a side portion of the first connecting fitting in an inward direction in a state of being screwed with a spiral groove of an outer peripheral portion of the elastic element, and the second connecting fitting is an inner portion. the first has a second female threaded portion of the spiral groove and screwed on the outer peripheral portion of the conductive elements, the outer periphery of the second of the second female threaded portion is the first conductive element connection fitting to Part of the side portion of the second connection fitting in the inward direction in the state of being screwed with the portion. Characterized that you second caulked portion were caulking are formed.
【０００５】[0005]
【発明の実施の形態】次に、本発明の実施の形態を図面
に基づいて詳細に説明する。図１は本発明の１つの実施
の形態に係るロッドアンテナを示す縦断面図である。図
１に示すように、ロッドアンテナ１は、ロッド状の第１
の導電性エレメント２と、この第１の導電性エレメント
２より径が小さいロッド状の第２の導電性エレメント３
と、これらの第１の導電性エレメント２と第２の導電性
エレメント３の接続部に設けられ両端面が開口されてい
る筒体状の第１の接続金具４と、第１の導電性エレメン
ト２の他の端部に設けられ両端面が開口されている筒体
状の第２の接続金具５とを有している。第１の導電性エ
レメント２は、中空の円筒状である。一方、第２のエレ
メント３は中実なロッドである。図２は第１の導電性エ
レメント２と第２の接続金具５との接続状態を示す一部
切り欠き拡大断面図である。図２に示すように、第１の
導電性エレメント２は、可撓性を有する長い導電性線状
体がピッチが密になるようにスパイラル状に巻かられる
ことにより中空のロッド形状に構成されている。前記導
電性線状体の軸方向断面形状（第１の導電性エレメント
２の軸方向と平行な方向に沿って切断した場合の断面形
状）は、小判状である。第２の接続金具５は、内部に第
１の導電性エレメント２の外周部と螺合する第２の雌ね
じ部５ａを有している。第２の接続金具５の材料として
は、例えば黄銅またはアルミニウムが用いられる。第２
の接続金具５は、第２の雌ねじ部５ａが第１の導電性エ
レメント２の外周部（に形成される連続した螺旋溝２
Ａ）と螺合した状態において第２の接続金具５の側部の
一部を内部方向にカシメられて第２のカシメ部５ｂを形
成されている。なお、第２の接続金具５は、上端面のみ
が開口されていてもよい。第２の接続金具５の外部およ
び第１の導電性エレメント２の下部を被覆するようにサ
ポート部材６が取り付けられている。このサポート部材
６の材料としては、例えばアルミニウムが用いられる。
サポート部材６の上部と第１の導電性エレメント２の間
には、筒状スプリング７が第１の導電性エレメント２を
包囲するように取り付けられている。サポート部材６
は、無線機本体（図示せず）に固定され、第１の導電性
エレメント２を保持する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical sectional view showing a rod antenna according to one embodiment of the present invention. As shown in FIG. 1, the rod antenna 1 includes a rod-shaped first antenna.
Conductive element 2 and a rod-shaped second conductive element 3 having a diameter smaller than that of the first conductive element 2.
And a cylindrical first connecting fitting 4 provided at a connecting portion between the first conductive element 2 and the second conductive element 3 and having both end surfaces opened, and a first conductive element The second connecting fitting 5 has a tubular shape and is provided at the other end of the second connecting end 5 and is open at both end surfaces. The first conductive element 2 has a hollow cylindrical shape. On the other hand, the second element 3 is a solid rod. FIG. 2 is a partially cutaway enlarged sectional view showing a connection state between the first conductive element 2 and the second connection fitting 5. As shown in FIG. 2, the first conductive element 2 is formed into a hollow rod shape by winding a flexible long conductive linear body in a spiral shape so that the pitch becomes dense. ing. The cross-sectional shape of the conductive linear body in the axial direction (the cross-sectional shape when cut along the direction parallel to the axial direction of the first conductive element 2) is oval. The second connection fitting 5 has a second female threaded portion 5 a that is screwed into the outer peripheral portion of the first conductive element 2 inside. As the material of the second connection fitting 5, for example, brass or aluminum is used. Second
In the connecting fitting 5, the second female screw portion 5a is formed in the outer peripheral portion of the first conductive element 2 (in the continuous spiral groove 2
A part of the side portion of the second connection fitting 5 is crimped inward in the state of being screwed with A) to form a second crimp portion 5b. The second connection fitting 5 may be open only on the upper end surface. A support member 6 is attached so as to cover the outside of the second connection fitting 5 and the lower portion of the first conductive element 2. Aluminum is used as the material of the support member 6, for example.
Between the upper part of the support member 6 and the first conductive element 2, a cylindrical spring 7 is attached so as to surround the first conductive element 2. Support member 6
Is fixed to a radio body (not shown) and holds the first conductive element 2.
【０００６】図３は第１の導電性エレメント２と第１の
接続金具４との接続状態を示す一部切り欠き拡大断面図
である。第１の導電性エレメント２の上部外周には、第
２の導電性エレメント３の抜けを防止するための第１の
接続金具４が固定されている。第１の接続金具４の材料
としては、例えば黄銅またはアルミニウムが用いられ
る。図３に示すように、第１の接続金具４は、内部に第
１の導電性エレメント２の外周部と螺合する第１の雌ね
じ部４ａを有している。第１の接続金具４の材料として
は、例えば黄銅が用いられる。第１の接続金具４は、第
２の導電性エレメント３が第１の接続金具４の内部を挿
通し、かつ、第１の雌ねじ部４ａが第１の導電性エレメ
ント２の外周部（に形成される連続した螺旋溝２Ａ）と
螺合した状態において、第１の接続金具４の側部の一部
が内部方向にカシメられて第１のカシメ部４ｂが形成さ
れている。第１の導電性エレメント２を構成する導電性
線状体は、硬鋼線を圧延により成形したものである。一
方、第２の導電性エレメント３は、可撓性を有する中実
の導電性ロッド（フレキシブルロッド）により構成さ
れ、具体的には例えばピアノ線および形状記憶合金等の
弾性を有する金属棒により構成されている。第１の導電
性エレメント２の内部には、第２の導電性エレメントが
軸方向に移動可能に嵌合されている。また、第１および
第２の導電性エレメント２、３のそれぞれの外周部は、
柔軟性を有する絶縁カバ−２ａ、３ａにより覆われてい
る。絶縁カバ−２ａ、３ａの材質としては、例えばポリ
アセタ−ル樹脂、ナイロン樹脂、ＰＢＴ樹脂等が用いら
れる。また、第２の導電性エレメント３の下部外周面に
は、円筒状の板ばね８が固定されている。この板ばね８
は、第１の導電性エレメント２の内周面に摺接して相対
移動を許容し、かつ、相対移動後の状態を保持するため
に第１の導電性エレメント２の内周面に圧接する弾性力
を有している。この板ばねの弾性力は、第２の導電性エ
レメント２の引き出し動作がスム−ズになされ、かつ、
第２の導電性エレメント２の移動後の状態を保持できる
よう設定されている。板ばね８の材料としては、例えば
リン青銅、ベリリウム銅等が用いられる。FIG. 3 is a partially cutaway enlarged sectional view showing a connection state between the first conductive element 2 and the first connection fitting 4. A first connecting fitting 4 for preventing the second conductive element 3 from coming off is fixed to the outer periphery of the upper portion of the first conductive element 2. For example, brass or aluminum is used as the material of the first connection fitting 4. As shown in FIG. 3, the first connection fitting 4 has a first female threaded portion 4 a that is screwed into the outer peripheral portion of the first conductive element 2 inside. For example, brass is used as the material of the first connection fitting 4. In the first connecting fitting 4, the second conductive element 3 is inserted through the inside of the first connecting fitting 4, and the first female screw portion 4 a is formed on the outer peripheral portion (of the first conductive element 2). In the state of being screwed into the continuous spiral groove 2A) , a part of the side portion of the first connection fitting 4 is swaged inward to form a first swaged portion 4b. The conductive linear body that constitutes the first conductive element 2 is formed by rolling a hard steel wire. On the other hand, the second conductive element 3 is composed of a flexible solid conductive rod (flexible rod), specifically, a piano wire and a metal rod having elasticity such as a shape memory alloy. Has been done. A second conductive element is fitted inside the first conductive element 2 so as to be movable in the axial direction. Further, the outer peripheral portions of the first and second conductive elements 2 and 3 are
It is covered with flexible insulating covers-2a and 3a. As the material of the insulating covers-2a and 3a, for example, polyacetal resin, nylon resin, PBT resin or the like is used. A cylindrical leaf spring 8 is fixed to the lower outer peripheral surface of the second conductive element 3. This leaf spring 8
Is an elastic member that is in sliding contact with the inner peripheral surface of the first conductive element 2 to allow relative movement, and that is pressed against the inner peripheral surface of the first conductive element 2 to maintain the state after the relative movement. Have power Due to the elastic force of the leaf spring, the pulling-out operation of the second conductive element 2 is made smooth, and
The second conductive element 2 is set so as to retain the state after the movement. As the material of the leaf spring 8, for example, phosphor bronze, beryllium copper or the like is used.
【０００７】第２の導電性エレメント３の上部外周に
は、円筒状の樹脂ジョイント９が同軸状に一体形成され
ている。この樹脂ジョイント９の上部には、第３の接続
金具１０が熱圧着またはその他の方法で固着されてい
る。第３の接続金具１０の上部には、雄ネジ部が形成さ
れている。第３の接続金具１０の上部には、円筒状のホ
ルダー１１が取り付けられている。ホルダー１１は、こ
の内周下部に形成されている雌ねじ部を有している。ホ
ルダー１１は、この内周下部の雌ねじ部が第３の接続金
具１０の雄ネジ部に螺合されることにより、第３の接続
金具１０の上部に固定されている。ホルダー１１の上部
には、ホルダーキャップ１２が固定されている。ホルダ
ー１１の外周面には、コイルエレメント（第３の導電性
エレメント）１３が巻回されている。ホルダー１１とホ
ルダーキャップ１２およびコイルエレメント１３を被覆
するように樹脂カバー１４が形成されている。この樹脂
カバー１４は、携帯者や周辺の人、物の安全性を確保す
るためのものである。樹脂カバー１４の外周部には、オ
ーリング１５が取り付けられている。前述のロッドアン
テナにおいては、第１の接続金具４は、第１の雌ねじ部
４ａが第１の導電性エレメント２の外周部と螺合した状
態において第１の接続金具４の側部の一部を内部方向に
カシメられて第１のカシメ部４ｂを形成されているか
ら、第１のカシメ部４ｂの変形の度合いが小さい場合に
も第１の接続金具４が第１の導電性エレメント２から外
れることがなく、かつ、製造が容易である。A cylindrical resin joint 9 is coaxially and integrally formed on the outer periphery of the upper portion of the second conductive element 3. A third connection fitting 10 is fixed to the upper portion of the resin joint 9 by thermocompression bonding or another method. A male screw portion is formed on the upper portion of the third connection fitting 10. A cylindrical holder 11 is attached to the upper part of the third connection fitting 10. The holder 11 has a female screw portion formed on the lower portion of the inner circumference. The holder 11 is fixed to the upper portion of the third connection fitting 10 by screwing the female thread portion of the lower inner periphery thereof into the male thread portion of the third connection fitting 10. A holder cap 12 is fixed to the top of the holder 11. A coil element (third conductive element) 13 is wound around the outer peripheral surface of the holder 11. A resin cover 14 is formed so as to cover the holder 11, the holder cap 12, and the coil element 13. The resin cover 14 is for ensuring the safety of the person carrying the device, the people around it, and the objects. An O-ring 15 is attached to the outer peripheral portion of the resin cover 14. In the above-mentioned rod antenna, the first connection fitting 4 has a part of a side portion of the first connection fitting 4 in a state where the first female screw portion 4a is screwed onto the outer peripheral portion of the first conductive element 2. Since the first caulking portion 4b is formed by caulking the first caulking portion inward, the first connecting fitting 4 is separated from the first conductive element 2 even when the degree of deformation of the first caulking portion 4b is small. It does not come off and is easy to manufacture.
【０００８】また、ロッドアンテナにおいては、第１の
カシメ部４ｂの変形の度合いを小さくすることができる
から、第１の導電性エレメント２に対し第１の接続金具
４の第１のカシメ部４ｂの押圧力が加わらないから、第
２の導電性エレメント３を第１の導電性エレメント２に
対して摺動させても、第２１の導電性エレメント２が細
くなることを防止することができる。また、同様に、第
２の接続金具５も、第２の雌ねじ部５ａが第１の導電性
エレメント２の外周部（に形成される連続した螺旋溝２
Ａ）と螺合した状態において第２の接続金具５の側部の
一部を内部方向にカシメられて第２のカシメ部５ｂを形
成されているから、第２のカシメ部５ｂの変形の度合い
が小さい場合にも第２の接続金具５が第１の導電性エレ
メント２から外れることがなく、かつ、製造が容易であ
る。また、携帯無線機の非使用時には第２の導電性エレ
メント３を第１の導電性エレメント３の方向に相対移動
してロッドアンテナ１を縮小し、携帯無線機の全体を小
型化して取扱性を向上できる。第１の導電性エレメント
２から第２の導電性エレメント３を引き出してロッドア
ンテナ１を伸長することができるため、ロッドアンテナ
１の長さ（使用周波数）が無線機本体の大きさに限定さ
れることはない。さらに、第１の導電性エレメント２は
導電性線状体をスパイラル状に巻回すことにより構成さ
れ、かつ、第２の導電性エレメント３は可撓性を有して
いるから、ロッドアンテナ１の先部が軸方向とずれた方
向に障害物に衝突しても第１および第２の導電性エレメ
ント２、３が撓むことができるから曲がりや折れが生じ
ることがなく、原形に復帰することができる。また、ロ
ッドアンテナ１がこの軸方向とずれた方向から人体に衝
突しても第１および第２のエレメント２、３が撓むから
その衝撃が減衰されるため人体への影響が小さくなる。
なお、第２の導電性エレメント３は、第１の導電性エレ
メント２と同様に、導電性線状体をスパイラル状に巻い
た中空のロッド状に形成したものでもよい。また、第１
の導電性エレメント２を構成する導電性線状体の軸方向
断面形状（第１の導電性エレメント２の軸方向と平行な
方向に沿って切断した場合の断面形状）は、小判状に限
定されものでなく、楕円形状または円形状であってもよ
い。Further, in the rod antenna, since the degree of deformation of the first caulking portion 4b can be reduced, the first caulking portion 4b of the first connecting fitting 4 with respect to the first conductive element 2 can be reduced. Therefore, even if the second conductive element 3 is slid with respect to the first conductive element 2, the 21st conductive element 2 can be prevented from becoming thin. Similarly, in the second connection fitting 5, the second female threaded portion 5a has a continuous spiral groove 2 formed in the outer peripheral portion (of the first conductive element 2).
The degree of deformation of the second caulking portion 5b is formed by caulking a part of the side portion of the second connecting fitting 5 inwardly in the state of being screwed with A) to form the second caulking portion 5b. Even if is small, the second connecting fitting 5 does not come off from the first conductive element 2, and the manufacturing is easy. Also, when not in use of the portable radio and contracts the rod antenna 1 by relatively moving the second conductive element 3 in the direction of the first conductive elementary DOO 3, handling properties and reduce the overall size of the portable wireless device Can be improved. Since the rod antenna 1 can be extended by pulling out the second conductive element 3 from the first conductive element 2, the length (use frequency) of the rod antenna 1 is limited to the size of the radio device main body. There is no such thing. Further, since the first conductive element 2 is formed by spirally winding a conductive linear body, and the second conductive element 3 has flexibility, the rod antenna 1 Even if the tip portion collides with an obstacle in a direction deviated from the axial direction, the first and second conductive elements 2 and 3 can bend, so that bending or bending does not occur and the original shape can be restored. You can Further, even if the rod antenna 1 collides with the human body in a direction deviated from the axial direction, the first and second elements 2 and 3 are bent, and the impact is attenuated, so that the influence on the human body is reduced.
The second conductive element 3 may be formed in the shape of a hollow rod in which a conductive linear body is spirally wound, like the first conductive element 2. Also, the first
Direction of the conductive linear body that constitutes the conductive element 2 of
Cross-sectional shape (parallel to the axial direction of the first conductive element 2
The cross-sectional shape when cut along the direction) is not limited to the oval shape, and may be an elliptical shape or a circular shape.
【０００９】[0009]
【発明の効果】以上説明したように、請求項１に記載の
発明は、第１の接続金具の第１の雌ねじ部が第１の導電
性エレメントの外周部と螺合した状態において第１の接
続金具の側部の一部を内部方向にカシメられて第１のカ
シメ部を形成されているから、製造が容易であり、第１
のカシメ部の変形の度合いが小さい場合にも第１の接続
金具が第１の導電性エレメントから外れることを防止
し、かつ、第２の導電性エレメントの外径が細くなるこ
とを防止することができる。請求項２に記載の発明は、
第１の接続金具の第１の雌ねじ部が第１の導電性エレメ
ントの外周部と螺合した状態において第１の接続金具の
側部の一部を内部方向にカシメられて第１のカシメ部を
形成され、かつ、第２の接続金具の第２の雌ねじ部が第
１の導電性エレメントの外周部と螺合した状態において
第２の接続金具の側部の一部を内部方向にカシメられて
第２のカシメ部を形成されているから、製造が容易であ
り、第１および第２のカシメ部の変形の度合いが小さい
場合にも、第１および第２の接続金具が第１の導電性エ
レメントから外れることを防止し、、かつ、第２の導電
性エレメントの外径が細くなることを防止することがで
きる。As described above, according to the first aspect of the invention, the first female threaded portion of the first connecting fitting is screwed to the outer peripheral portion of the first conductive element. Since the first caulking portion is formed by caulking a part of the side portion of the connection fitting inward, the manufacturing is easy and
Even when the degree of deformation of the caulking part is small, the first connecting fitting is prevented from coming off the first conductive element, and the outer diameter of the second conductive element is prevented from becoming thin. You can The invention according to claim 2 is
In a state where the first female thread portion of the first connecting fitting is screwed with the outer peripheral portion of the first conductive element, a part of the side portion of the first connecting fitting is caulked inward to form a first caulking portion. And a part of a side portion of the second connecting fitting is crimped inwardly in a state where the second female thread portion of the second connecting fitting is screwed with the outer peripheral portion of the first conductive element. Since the second caulking portion is formed on the first and second caulking portions, the first and second connecting fittings have the first conductive material even when the degree of deformation of the first and second caulking portions is small. It is possible to prevent the second conductive element from coming off from the conductive element, and to prevent the outer diameter of the second conductive element from becoming thin.
【図１】本発明の１つの実施に形態に係るロッドアンテ
ナを示す略縦断面図である。FIG. 1 is a schematic vertical sectional view showing a rod antenna according to an embodiment of the present invention.
【図２】図１のロッドアンテナの第１の導電性エレメン
トと第２の接続金具との接続状態を示す一部切り欠き拡
大断面図である。2 is a partially cutaway enlarged cross-sectional view showing a connection state between a first conductive element and a second connection fitting of the rod antenna of FIG.
【図３】図１のロッドアンテナの第１の導電性エレメン
トと第１の接続金具との接続状態を示す一部切り欠き拡
大断面図である。FIG. 3 is a partially cutaway enlarged cross-sectional view showing a connection state between a first conductive element and a first connection fitting of the rod antenna of FIG.
【図４】従来のロッドアンテナを示す正面図である。FIG. 4 is a front view showing a conventional rod antenna.
１ ロッドアンテナ、２ 第１の導電性エレメント、２
ａ 絶縁カバー、３第２の導電性エレメント、３ａ 絶
縁カバー、４ 第１の接続金具、４ａ 第１の雌ねじ
部、４ｂ 第１のカシメ部、５ 第２の接続金具、５ａ
第２の雌ねじ部、５ｂ 第２のカシメ部、６ サポー
ト部材、９ 樹脂ジョイント、１０ 第３の接続金具、
１１ ホルダー、１２ ホルダーキャップ、１３ コイ
ルエレメント、１４ 樹脂カバー、１５ オ−リング。1 rod antenna, 2 first conductive element, 2
a insulation cover, second conductive element, 3a insulation cover, first connection fitting, 4a first female screw portion, 4b first crimped portion, second connection fitting, 5a
2nd female screw part, 5b 2nd crimping part, 6 support member, 9 resin joint, 10 3rd connection metal fitting,
11 holders, 12 holder caps, 13 coil elements, 14 resin covers, 15 o-rings.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−273519（ＪＰ，Ａ) 特開 平６−232614（ＪＰ，Ａ) 特開 平11−330822（ＪＰ，Ａ) 特開 平11−225012（ＪＰ，Ａ) 特開2002−26632（ＪＰ，Ａ) 実開 平６−44210（ＪＰ，Ｕ) 実開 平３−48903（ＪＰ，Ｕ) 実公 昭40−2812（ＪＰ，Ｙ１) 登録実用新案3063603（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01Q 1/24 H01Q 1/10 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-273519 (JP, A) JP-A-6-232614 (JP, A) JP-A-11-330822 (JP, A) JP-A-11- 225012 (JP, A) JP 2002-26632 (JP, A) Actual flat 6-44210 (JP, U) Actual flat 3-48903 (JP, U) Actual public 40-2812 (JP, Y1) Registered Utility model 3063603 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) H01Q 1/24 H01Q 1/10
Claims (2)
この第１の導電性エレメントより径が小さいロッド状の
第２の導電性エレメントと、前記第１の導電性エレメン
トと第２の導電性エレメントの接続部に設けられ両端面
が開口されている中空筒体状の接続金具と、を有するロ
ッドアンテナであって、前記第１の導電性エレメント
は、可撓性を有する長い導電性線状体がピッチが密にな
るようにスパイラル状に巻かれることにより中空のロッ
ド形状に構成され、かつ、前記導電性線状体の軸方向断
面形状が小判状、楕円形状、または、円形状であり、前
記第２の導電性エレメントは、前記第１の導電性エレメ
ントの内部に移動可能に嵌合され、前記接続金具は、内
部に前記第１の導電性エレメントの外周部の螺旋溝と螺
合する雌ねじ部を有し、前記第２の導電性エレメントが
前記接続金具の内部を挿通し、かつ、前記接続金具の前
記雌ねじ部が前記第１の導電性エレメントの外周部の螺
旋溝と螺合した状態において前記接続金具の側部の一部
を内部方向にカシメたカシメ部が形成されていることを
特徴とするロッドアンテナ。1. A rod-shaped first conductive element,
A rod-shaped second conductive element having a diameter smaller than that of the first conductive element, and a hollow provided at both ends of the connecting portion between the first conductive element and the second conductive element. a rod antenna having a cylindrical body shape fitting, wherein the first conductive element, the long electrically conductive wire-like body having flexibility is wound in a spiral shape so that the pitch becomes dense is configured in a hollow rod shape by, and axially sectional of the conductive wire-like body
The surface shape is an oval shape, an elliptical shape, or a circular shape, the second conductive element is movably fitted inside the first conductive element, and the connecting fitting is inside the inside. The first conductive element has a female threaded portion that is screwed into the spiral groove on the outer peripheral portion, the second conductive element is inserted through the inside of the connection fitting, and the female threaded portion of the connection fitting is the A screw on the outer periphery of the first conductive element
A rod antenna characterized in that a caulking portion is formed by caulking a part of a side portion of the connection fitting inwardly in a state of being screwed with the spiral groove .
この第１の導電性エレメントより径が小さいロッド状の
第２の導電性エレメントと、前記第１の導電性エレメン
トと第２の導電性エレメントの接続部に設けられ両端面
が開口されている中空筒体状の第１の接続金具と、前記
第１の導電性エレメントの他の端部に設けられ少くとも
一端面が開口されている中空筒体状の第２の接続金具
と、を有するロッドアンテナであって、前記第１の導電
性エレメントは、可撓性を有する長い導電性線状体がピ
ッチが密になるようにスパイラル状に巻かれることによ
り中空のロッド形状に構成され、かつ、前記導電性線状
体の軸方向断面形状が小判状、楕円形状、または、円形
状であり、前記第２の導電性エレメントは、前記第１の
導電性エレメントの内部に移動可能に嵌合され、前記第
１の接続金具は、内部に前記第１の導電性エレメントの
外周部の螺旋溝と螺合する第１の雌ねじ部を有し、前記
第２の導電性エレメントが前記第１の接続金具の内部を
挿通し、かつ、前記第１の接続金具の前記第１の雌ねじ
部が前記第１の導電性エレメントの外周部の螺旋溝と螺
合した状態において前記第１の接続金具の側部の一部を
内部方向にカシメた第１のカシメ部を形成され、前記第
２の接続金具は、内部に前記第１の導電性エレメントの
外周部の螺旋溝と螺合する第２の雌ねじ部を有し、前記
第２の接続金具の前記第２の雌ねじ部が前記第１の導電
性エレメントの外周部と螺合した状態において前記第２
の接続金具の側部の一部を内部方向にカシメた第２のカ
シメ部が形成されていることを特徴とするロッドアンテ
ナ。2. A rod-shaped first conductive element,
A rod-shaped second conductive element having a diameter smaller than that of the first conductive element, and a hollow provided at both ends of the connecting portion between the first conductive element and the second conductive element. A rod having a tubular first connecting fitting and a hollow tubular second connecting fitting provided at the other end of the first conductive element and having at least one end surface opened. In the antenna, the first conductive element is configured into a hollow rod shape by winding a flexible long conductive linear body in a spiral shape so that the pitch is dense, and The conductive linear body has an oval-shaped, elliptical-shaped, or circular cross-sectional shape in the axial direction , and the second conductive element is movably fitted inside the first conductive element. , The first connection fitting is The first has a first female threaded portion of the spiral groove and screwed on the outer peripheral portion of the conductive elements, the second conductive element is inserted through the inside of the first fitting to and the the first female threaded portion of the first connection fitting is caulked part of the side of the first fitting in a state screwed with the outer periphery of the spiral groove of the first conductive elements inside direction A first caulking portion is formed, and the second connecting fitting has a second female screw portion inside which is screwed into a spiral groove of an outer peripheral portion of the first conductive element, and the second connecting fitting is provided. wherein in a state wherein the second female screw portion is screwed with the outer peripheral portion of the first conductive elements of the fitting second
Rod antenna characterized that you the second caulking portion a part of the side was inwardly caulking the fitting is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000046322A JP3382913B2 (en) | 2000-02-23 | 2000-02-23 | Rod antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000046322A JP3382913B2 (en) | 2000-02-23 | 2000-02-23 | Rod antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001237623A JP2001237623A (en) | 2001-08-31 |
| JP3382913B2 true JP3382913B2 (en) | 2003-03-04 |
Family
ID=18568756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000046322A Expired - Fee Related JP3382913B2 (en) | 2000-02-23 | 2000-02-23 | Rod antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3382913B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3063603U (en) | 1998-12-11 | 1999-11-16 | 須田 能充 | Mobile phone antenna |
-
2000
- 2000-02-23 JP JP2000046322A patent/JP3382913B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3063603U (en) | 1998-12-11 | 1999-11-16 | 須田 能充 | Mobile phone antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001237623A (en) | 2001-08-31 |
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