JPH083052Y2 - Helical antenna - Google Patents
Helical antennaInfo
- Publication number
- JPH083052Y2 JPH083052Y2 JP11117790U JP11117790U JPH083052Y2 JP H083052 Y2 JPH083052 Y2 JP H083052Y2 JP 11117790 U JP11117790 U JP 11117790U JP 11117790 U JP11117790 U JP 11117790U JP H083052 Y2 JPH083052 Y2 JP H083052Y2
- Authority
- JP
- Japan
- Prior art keywords
- insulating cover
- base
- fitting
- base end
- antenna element
- 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 - Lifetime
Links
- 239000010953 base metal Substances 0.000 claims description 45
- 239000000463 material Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Support Of Aerials (AREA)
- Telephone Set Structure (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、コードレス電話機やトランシーバ等に用い
られるヘリカルアンテナに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a helical antenna used in cordless telephones, transceivers and the like.
［従来の技術］ 従来のヘリカルアンテナは、第５図および第６図に示
すように、アンテナエレメント10の基端部と基部金具12
の螺合部14を螺合して固定し、アンテナエレメント10を
覆う絶縁カバー16の基端部に基部金具12の係合部18を係
合して接着剤で固定していた。[Prior Art] A conventional helical antenna has a base end portion and a base metal fitting 12 of an antenna element 10 as shown in FIG. 5 and FIG.
The screwing portion (14) is screwed and fixed, and the engaging portion (18) of the base metal fitting (12) is engaged with the base end portion of the insulating cover (16) covering the antenna element (10) and fixed with an adhesive.
［考案が解決しようとする課題］ しかしながら第５図および第６図に示す従来例では、
基部金具12の螺合部14および係合部18が円柱状に形成さ
れていたので、挽物加工となり材料費および加工費が高
くなるという問題点があった。また、接着剤を用いて絶
縁カバー16の基端部と基部金具12の係合部18を固着して
いたので、絶縁カバー16と基部金具12の固着作業が面倒
であるという問題点があった。[Problems to be Solved by the Invention] However, in the conventional example shown in FIG. 5 and FIG.
Since the screwing portion 14 and the engaging portion 18 of the base metal fitting 12 are formed in a cylindrical shape, there is a problem that the material processing and the processing cost are increased due to the ground material processing. Further, since the base end portion of the insulating cover 16 and the engaging portion 18 of the base metal fitting 12 are fixed using an adhesive, there is a problem that the work of fixing the insulating cover 16 and the base metal fitting 12 is troublesome. .
本考案は上述の問題点に鑑みなされたもので、基部金
具の材料費および加工費を安くすることができるととも
に、絶縁カバーと基部金具の固着作業を簡単にすること
ができるヘリカルアンテナを提供することを目的とする
ものである。The present invention has been made in view of the above problems, and provides a helical antenna that can reduce the material cost and the processing cost of the base metal fitting and can easily fix the insulating cover and the base metal fitting. That is the purpose.
［課題を解決するための手段］ 本第１考案は、コイル状のアンテナエレメントの基端
部を基部金具に固着し、先端部を閉塞したほぼ円筒状の
絶縁カバーで前記アンテナエレメントを覆い、前記絶縁
カバーの基端部を前記基部金具に固着してなるヘリカル
アンテナにおいて、前記絶縁カバーの基端部を肉厚に形
成するとともに内壁面に開口部と連通する係合溝を形成
し、前記基部金具は、前記アンテナエレメントの基端部
と螺合する螺合部と、前記絶縁カバーの係合溝に圧入係
止する圧入係止部とを有する板状体としてなることを特
徴とするものである。[Means for Solving the Problem] In the first invention, the base end of a coil-shaped antenna element is fixed to a base metal fitting, and the antenna element is covered with a substantially cylindrical insulating cover having a closed front end. In a helical antenna in which a base end portion of an insulating cover is fixed to the base metal fitting, the base end portion of the insulating cover is formed thick and an engagement groove communicating with an opening is formed on an inner wall surface of the base portion. The metal fitting is a plate-shaped body having a screwing portion that is screwed into the base end portion of the antenna element and a press-fitting locking portion that is press-fitted into the engaging groove of the insulating cover. is there.
本第２考案は、コイル状のアンテナエレメントの基端
部を基部金具に固着し、先端部を閉塞したほぼ円筒状の
絶縁カバーで前記アンテナエレメントを覆い、前記絶縁
カバーの基端部を前記基部金具に固着してなるヘリカル
アンテナにおいて、前記絶縁カバーの基端部の外壁面に
係合溝を形成し、前記基部金具は、前記アンテナエレメ
ントの基端部を螺合する螺合部と、前記絶縁カバーの係
合溝に弾性的に係止する弾性係止部とを有する板状体と
してなることを特徴とするものである。According to a second aspect of the present invention, the base end portion of a coil-shaped antenna element is fixed to a base metal fitting, and the antenna element is covered with a substantially cylindrical insulating cover whose front end portion is closed. In a helical antenna fixed to a metal fitting, an engaging groove is formed on an outer wall surface of a base end portion of the insulating cover, and the base metal fitting includes a screwing portion for screwing a base end portion of the antenna element, It is a plate-shaped body having an elastic locking portion that elastically locks in the engagement groove of the insulating cover.
そして、第２考案において、絶縁カバーと基部金具の
係止を円滑にするために、絶縁カバーの係合溝と絶縁カ
バーの開口部との間に、基部金具の弾性係止部を前記係
合溝に案内する案内溝を形成する。Further, in the second invention, in order to smoothly engage the insulating cover and the base metal fitting, the elastic engaging portion of the base metal fitting is engaged between the engaging groove of the insulating cover and the opening of the insulating cover. A guide groove for guiding the groove is formed.
［作用］ 第１考案では、基部金具の螺合部とアンテナエレメン
トの基端部とを螺合し、アンテナエレメントを絶縁カバ
ーで覆うとともに、絶縁カバーの基端部の内壁面に形成
された係合溝に基部金具の圧入係止部を圧入係止するこ
とによって、基部金具とアンテナエレメントおよび絶縁
カバーとが固着する。また、第２考案では、基部金具の
螺合部とアンテナエレメントの基端部とを螺合し、アン
ナエレメントを絶縁カバーで覆うとともに、絶縁カバー
の基端部の外壁面に形成された係合溝に基部金具の弾性
係止部を弾性的に係止することによって、基部金具とア
ンテナエレメントおよび絶縁カバーとが固着する。[Operation] In the first invention, the threaded portion of the base metal part and the base end portion of the antenna element are screwed together to cover the antenna element with the insulating cover, and the engaging member formed on the inner wall surface of the base end portion of the insulating cover. The base fitting, the antenna element, and the insulating cover are fixed to each other by press-fitting and locking the press fitting locking portion of the base fitting in the mating groove. Further, in the second invention, the screwing portion of the base metal part and the base end portion of the antenna element are screwed together to cover the Anna element with the insulating cover, and the engagement formed on the outer wall surface of the base end portion of the insulating cover. By elastically locking the elastic locking portion of the base metal fitting to the groove, the base metal fitting is fixed to the antenna element and the insulating cover.
そして、第２考案において、絶縁カバーの係合溝と絶
縁カバーの開口部との間に、基部金具の弾性係止部を前
記係合溝に案内する案内溝を形成するようにした場合に
は、基部金具の弾性係止部は案内溝で案内されて係合溝
に弾性的に係止する。In the second invention, when a guide groove for guiding the elastic locking portion of the base metal fitting to the engaging groove is formed between the engaging groove of the insulating cover and the opening of the insulating cover, The elastic locking portion of the base metal fitting is guided by the guide groove and elastically locked in the engaging groove.
［実施例］ 第１図および第２図は本第１考案の一実施例を示すも
ので、これらの図において、第５図および第６図と同一
部分は同一符号とする。第１図および第２図において、
20はプレスなどで板材を打ち抜き加工することによって
形成された基部金具で、この基部金具20は、取付孔22が
穿設された矩形板状の取付部24と、この取付部24の上部
に順次連設された矩形板状の挿入部26および螺合部28と
からなり、前記挿入部26は前記取付部24および前記螺合
部28より幅広に形成され、その両側のほぼ幅広相当部分
が本考案に特有の圧入係止部30、30を形成している。前
記基部金具20の螺合部28の側面には、アンテナエレメン
ト10の基端部に螺合するねじ山31が形成されている。32
は先端部を閉塞したほぼ円筒状の絶縁カバーで、この絶
縁カバー32の基端部34は肉厚に形成され、この基端部34
の内壁面には、開口部に連通する一対の矩形形状の係合
溝36、36が形成されている。前記係合溝36、36の溝幅は
前記圧入係止部30、30の板厚より若干小さく形成され、
前記圧入係止部30、30が前記係合溝36、36に圧入係止す
るように形成されている。[Embodiment] FIGS. 1 and 2 show an embodiment of the first invention of the present invention. In these drawings, the same parts as those in FIGS. 5 and 6 are designated by the same reference numerals. In FIG. 1 and FIG.
Reference numeral 20 denotes a base metal fitting formed by punching a plate material with a press or the like.The base metal fitting 20 has a rectangular plate-shaped mounting portion 24 having a mounting hole 22 and an upper portion of the mounting portion 24. It is composed of a rectangular plate-shaped insertion portion 26 and a screwing portion 28 that are continuously provided, the insertion portion 26 is formed wider than the mounting portion 24 and the screwing portion 28, and substantially wide portions on both sides of the insertion portion 26 are equivalent to each other. The press-fitting locking portions 30, 30 peculiar to the invention are formed. A thread 31 is formed on the side surface of the threaded portion 28 of the base fitting 20 so as to be threadedly engaged with the base end of the antenna element 10. 32
Is a substantially cylindrical insulating cover with a closed distal end, and the base end 34 of the insulating cover 32 is formed to be thick.
A pair of rectangular engagement grooves 36, 36 communicating with the opening are formed on the inner wall surface of the. The groove width of the engaging grooves 36, 36 is formed to be slightly smaller than the plate thickness of the press-fitting locking portions 30, 30.
The press-fit locking portions 30, 30 are formed so as to be press-fit and locked in the engagement grooves 36, 36.
そして、基部金具20の螺合部28のねじ山31にアンテナ
エレメント10の基端部を螺合し、接着剤で両者を固着
し、ついでアンテナエレメント10に絶縁カバー32を被
せ、絶縁カバー32の基端部34の係合溝36、36に基部金具
20の圧入係止部30、30を圧入係止することによって、第
１図のようなヘリカルアンテナが形成される。Then, the base end portion of the antenna element 10 is screwed to the screw thread 31 of the screwing portion 28 of the base metal fitting 20, both are fixed with an adhesive, and then the antenna element 10 is covered with the insulating cover 32, and the insulating cover 32 Base metal fittings in the engagement grooves 36, 36 of the base end 34
By press-fitting and locking the press-fitting locking portions 30, 30 of 20, a helical antenna as shown in FIG. 1 is formed.
第３図および第４図は本第２考案の一実施例を示すも
ので、これらの図において、第１図および第２図と同一
部分は同一符号とする。第３図および第４図において、
40はプレスなどで板材を打ち抜き加工することによって
形成された基部金具で、この基部金具40は、取付孔42が
穿設された矩形状の取付部44と、この取付部44の上部に
順次連設された矩形状の挿入部46および螺合部48と、本
考案に特有の弾性係止部50、50とからなっている。前記
弾性係止部50、50は、前記挿入部46の取付部44側の両側
面に連設されたほぼカギ型形状の弾性部52、52と、この
弾性部52、52の先端に前記挿入部46側に突出して形成さ
れた係止部54、54とからなっている。前記基部金具40の
螺合部48の両側面には、アンテナエレメント10の基端部
に螺合するねじ山51が形成されている。56は先端部を閉
塞したほぼ円筒状の絶縁カバーで、この絶縁カバー56の
基端部58は肉厚に形成され、この基端部58の外壁面に
は、開口部に連通し断面が矩形状の一対の案内溝60、60
が形成され、この案内溝60、60の先端部には前記弾性係
止部50、50の係止部54、54を係合係止する一対の係合溝
62、62が形成されている。そして、基部金具40の螺合部
48のねじ山51にアンテナエレメント10の基端部を螺合
し、接着剤で両者を固着し、ついでアンテナエレメント
10に絶縁カバー56を被せ、基部金具40の弾性係止部50、
50を絶縁カバー56の基端部58の案内溝60、60で案内しつ
つ係止部54、54を係合溝62、62に弾性的に係合係止する
ことによって、第３図のようなヘリカルアンテナが形成
される。FIGS. 3 and 4 show an embodiment of the second invention, and in these figures, the same parts as those in FIGS. 1 and 2 are designated by the same reference numerals. In FIGS. 3 and 4,
Reference numeral 40 denotes a base metal fitting formed by punching a plate material with a press or the like.The base metal fitting 40 has a rectangular mounting portion 44 in which a mounting hole 42 is formed, and a base mounting metal fitting 40 which is sequentially connected to an upper portion of the mounting portion 44. It is provided with a rectangular insertion portion 46 and a screwing portion 48 which are provided, and elastic locking portions 50, 50 unique to the present invention. The elastic locking portions 50, 50 are substantially hook-shaped elastic portions 52, 52 continuously provided on both side surfaces of the insertion portion 46 on the mounting portion 44 side, and the elastic portions 52, 52 are inserted at the tips of the elastic portions 52, 52. It is composed of locking portions 54, 54 formed so as to project to the side of the portion 46. On both side surfaces of the screwing portion 48 of the base metal fitting 40, a screw thread 51 that is screwed with the base end portion of the antenna element 10 is formed. Reference numeral 56 denotes a substantially cylindrical insulating cover having a closed distal end, and a base end portion 58 of the insulating cover 56 is formed to be thick, and the outer wall surface of the base end portion 58 communicates with the opening and has a rectangular cross section. A pair of shaped guide grooves 60, 60
The guide grooves 60, 60 are formed with a pair of engagement grooves for engaging and locking the locking portions 54, 54 of the elastic locking portions 50, 50.
62, 62 are formed. Then, the threaded portion of the base metal fitting 40
The base end portion of the antenna element 10 is screwed into the screw thread 51 of 48, both are fixed with an adhesive, and then the antenna element
10 is covered with an insulating cover 56, the elastic locking portion 50 of the base metal fitting 40,
As shown in FIG. 3, 50 is guided by the guide grooves 60, 60 of the base end portion 58 of the insulating cover 56 while the locking portions 54, 54 are elastically engaged and locked in the engaging grooves 62, 62. A helical antenna is formed.
前記第３図および第４図に示す実施例では、絶縁カバ
ーの係合溝と開口部との間に、基部金具の弾性係止部を
係合溝に案内する案内溝を形成して、基部金具の弾性係
止部が絶縁カバーの係合溝に円滑に係合係止するように
したが、本考案はこれに限るものでなく、絶縁カバーの
基端部の外壁面に係合溝を形成し、前記基部金具を、絶
縁カバーの係合溝に弾性的に係止する弾性係止部を有す
る板状体で形成したものであればよい。In the embodiment shown in FIGS. 3 and 4, a guide groove for guiding the elastic locking portion of the base metal fitting to the engagement groove is formed between the engagement groove and the opening of the insulating cover to form the base portion. Although the elastic locking portion of the metal fitting is configured to smoothly engage and lock with the engaging groove of the insulating cover, the present invention is not limited to this, and the engaging groove is formed on the outer wall surface of the base end portion of the insulating cover. The base metal member may be formed of a plate having an elastic locking portion that elastically locks in the engaging groove of the insulating cover.
［考案の効果］ 本考案によるヘリカルアンテナは、上記のように構成
したので、つぎのような効果を有する。[Effects of the Invention] The helical antenna according to the present invention, which is configured as described above, has the following effects.
第１考案では、基部金具が螺合部と圧入係止部とを有
する板状体で形成され、第２考案では、基部金具が螺合
部とと弾性係止部とを有する板状体で形成され、ともに
基部金具が板状体で形成されているので、プレス加工の
ような簡単な加工で基部金具を製造することができる。
このため、基部金具を挽物加工で形成していた従来例と
比べて、基部金具の材料費および加工費を安くすること
ができる。In the first invention, the base metal fitting is formed of a plate-shaped body having a screwing portion and a press-fit locking portion, and in the second invention, the base metal fitting is a plate-shaped body having a screwing portion and an elastic locking portion. Since both are formed and the base fitting is formed of a plate-like body, the base fitting can be manufactured by a simple process such as press working.
Therefore, the material cost and the processing cost of the base metal fitting can be reduced as compared with the conventional example in which the base metal fitting is formed by sawing.
また、第１考案では、絶縁カバーの係合溝に基部金具
の圧入係止部を圧入係止することによって、第２考案で
は、絶縁カバーの係合溝に基部金具の弾性係止部を弾性
係止することによって、それぞれ絶縁カバーと基部金具
とが固着するようにしたので、接着剤を用いて固着して
いた従来例と比較して、絶縁カバーと基部金具との固着
作業を簡単にすることができる。In the first invention, the press-fit locking portion of the base metal fitting is press-fitted into the engagement groove of the insulating cover, and in the second invention, the elastic locking portion of the base metal fitting is elastically fitted in the engagement groove of the insulating cover. Since the insulating cover and the base metal fitting are fixed to each other by locking, the fixing work of the insulating cover and the base metal fitting is simplified as compared with the conventional example in which the adhesive is fixed. be able to.
そして、第２考案において、絶縁カバーの係合溝と絶
縁カバーの開口部との間に、基部金具の弾性係止部を前
記係合溝に案内する案内溝を形成するようにした場合に
は、基部金具の弾性係止部は案内溝で案内されて係止用
係合溝に係止するので、絶縁カバーと基部金具の係止を
円滑に行なうことができる。In the second invention, when a guide groove for guiding the elastic locking portion of the base metal fitting to the engaging groove is formed between the engaging groove of the insulating cover and the opening of the insulating cover, Since the elastic locking portion of the base metal fitting is guided by the guide groove and locked in the locking engagement groove, the insulating cover and the base metal fitting can be locked smoothly.
第１図および第２図は本第１考案によるヘリカルアンテ
ナの一実施例を示すもので、第１図は一部を縦断面で表
わし一部を省略した正面図、第２図は第１図の要部の分
解斜視図、第３図および第４図は本第２考案によるヘリ
カルアンテナの一実施例を示すもので、第３図は一部を
縦断面で表わし一部を省略した正面図、第４図は第３図
の要部の分解斜視図、第５図および第６図は従来例を示
すもので、第５図は一部を省略した縦断面図、第６図は
第５図の一部の分解斜視図である。 10……アンテナエレメント、20、40……基部金具、28、
48……基部金具20、40の螺合部、30……圧入係止部、31
……螺合部28のねじ山、32、56……絶縁カバー、34、58
……絶縁カバー32、56の基端部、36……基端部34の内壁
面に形成された係合溝、50……弾性係止部、51……螺合
部48のねじ山、52……弾性部、54……係止部、60……案
内溝、62……基端部58の外壁面に形成された係合溝。FIGS. 1 and 2 show an embodiment of the helical antenna according to the present invention. FIG. 1 is a front view in which a part is shown in a longitudinal section and a part is omitted, and FIG. 3 and 4 show an embodiment of the helical antenna according to the second aspect of the present invention, and FIG. 3 is a front view showing a part in a longitudinal section and a part omitted. FIG. 4 is an exploded perspective view of a main part of FIG. 3, FIGS. 5 and 6 show a conventional example, FIG. 5 is a longitudinal sectional view with a part omitted, and FIG. It is a one part exploded perspective view of a figure. 10 …… Antenna element, 20, 40 …… Base bracket, 28,
48 …… Screwed part of base metal fittings 20 and 40, 30 …… Press-fit locking part, 31
...... Thread of threaded portion 28, 32, 56 …… Insulation cover, 34, 58
... Base ends of the insulating covers 32 and 56, 36 ... Engagement grooves formed on the inner wall surface of the base end 34, 50 ... Elastic locking parts, 51 ... Threads of the screwing part 48, 52 ...... Elastic portion, 54 ...... Locking portion, 60 ...... Guide groove, 62 ...... Engagement groove formed on the outer wall surface of the base end portion 58.
Claims (3)
基部金具に固着し、先端部を閉塞したほぼ円筒状の絶縁
カバーで前記アンテナエレメントを覆い、前記絶縁カバ
ーの基端部を前記基部金具に固着してなるヘリカルアン
テナにおいて、前記絶縁カバーの基端部を肉厚に形成す
るとともに内壁面に開口部と連通する係合溝を形成し、
前記基部金具は、前記アンテナエレメントの基端部と螺
合する螺合部と、前記絶縁カバーの係合溝に圧入係止す
る圧入係止部とを有する板状体としてなることを特徴と
するヘリカルアンテナ。1. A base end fitting of a coil-shaped antenna element is fixed to a base fitting, and the antenna element is covered with a substantially cylindrical insulating cover whose front end is closed, and the base end of the insulating cover is attached to the base fitting. In the helical antenna fixed to, the base end portion of the insulating cover is formed thick and an engagement groove communicating with the opening is formed on the inner wall surface,
The base metal member is a plate-shaped body having a screwing portion that is screwed into the base end portion of the antenna element and a press-fitting locking portion that is press-fitted and locked into the engagement groove of the insulating cover. Helical antenna.
基部金具に固着し、先端部を閉塞したほぼ円筒状の絶縁
カバーで前記アンテナエレメントを覆い、前記絶縁カバ
ーの基端部を前記基部金具に固着してなるヘリカルアン
テナにおいて、前記絶縁カバーの基端部の外壁面に係合
溝を形成し、前記基部金具は、前記アンテナエレメント
の基端部を螺合する螺合部と、前記絶縁カバーの係合溝
に弾性的に係止する弾性係止部とを有する板状体として
なることを特徴とするヘリカルアンテナ。2. A base end fitting of a coil-shaped antenna element is fixed to a base fitting, and the antenna element is covered with a substantially cylindrical insulating cover whose front end is closed. The base end of the insulating cover is attached to the base fitting. In the helical antenna fixedly attached to the insulating cover, an engaging groove is formed on the outer wall surface of the base end portion of the insulating cover, and the base metal fitting is provided with a screwing portion for screwing the base end portion of the antenna element, and the insulating member. A helical antenna, comprising a plate-shaped body having an elastic locking portion that elastically locks in an engagement groove of the cover.
との間に、基部金具の弾性係止部を前記係合溝に案内す
る案内溝を形成してなる請求項（２）記載のヘリカルア
ンテナ。3. A guide groove is formed between the engaging groove of the insulating cover and the opening of the insulating cover to guide the elastic locking portion of the base metal fitting to the engaging groove. Helical antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11117790U JPH083052Y2 (en) | 1990-10-24 | 1990-10-24 | Helical antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11117790U JPH083052Y2 (en) | 1990-10-24 | 1990-10-24 | Helical antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0467807U JPH0467807U (en) | 1992-06-16 |
| JPH083052Y2 true JPH083052Y2 (en) | 1996-01-29 |
Family
ID=31858597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11117790U Expired - Lifetime JPH083052Y2 (en) | 1990-10-24 | 1990-10-24 | Helical antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH083052Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1675213A1 (en) * | 1997-01-28 | 2006-06-28 | Yokowo Co., Ltd. | Antenna for mounting on vehicle, antenna element, and manufacturing method therefor |
| CN116864962A (en) * | 2023-07-27 | 2023-10-10 | 苏州国华特种线材有限公司 | Dual-polarized high-frequency oscillator |
-
1990
- 1990-10-24 JP JP11117790U patent/JPH083052Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0467807U (en) | 1992-06-16 |
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