JPS60260112A - Variable high frequency transformer - Google Patents

Variable high frequency transformer

Info

Publication number
JPS60260112A
JPS60260112A JP11700684A JP11700684A JPS60260112A JP S60260112 A JPS60260112 A JP S60260112A JP 11700684 A JP11700684 A JP 11700684A JP 11700684 A JP11700684 A JP 11700684A JP S60260112 A JPS60260112 A JP S60260112A
Authority
JP
Japan
Prior art keywords
shield case
threaded portion
cap core
core
high frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11700684A
Other languages
Japanese (ja)
Inventor
Chiaki Miyake
三宅　千秋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11700684A priority Critical patent/JPS60260112A/en
Publication of JPS60260112A publication Critical patent/JPS60260112A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/10—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by means of a movable shield

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

PURPOSE:To stabilize a rotating torque of cap core by employing the structure where a through hole is provided in the desired width in parallel to the side surface at the ceiling in the same direction as the threaded portion provided to the side surfaces opposed to each other of the shield case. CONSTITUTION:A pair of slits 1 in the desired width is provided at the top in the same direction as the threaded portion 3 of the shield case 5. Thereby an elastic effect of the side surface as a whole of the threaded portion 3 can be obtained and such elastic effect becomes maximum at the contact area between the cap core 4 and the threaded portion 3 of the shield case 5 and stable core rotating torque can be obtained even in any kinds of combination of the cap core 4 and the shield case 5 having fluctuation in sizes. Thereby, accuracy of size of cap core, threaded portion of shield case can be alleviated and automatic frequency adjustment can be realized easily.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は各種電子機器に使用される可変高周波変成器に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a variable high frequency transformer used in various electronic devices.

従来例の構成とその問題点 従来この種の可変高周波変成器は第１図、第２図に示す
ように角型金属シールドケース６の対向する２側面に切
込み２と、ネジ切ｐ部３を設け、キャップコア４のネジ
溝を螺合させて調整自在に位置設定する際の弾力効果に
よるコア回転トルクを得ている。Structure of conventional example and its problems Conventionally, this type of variable high frequency transformer has a notch 2 and a threaded p part 3 on two opposing sides of a square metal shield case 6, as shown in FIGS. 1 and 2. The core rotation torque is obtained by the elastic effect when the screw groove of the cap core 4 is screwed together to adjust the position.

しかしながら、このシールドケース５では、切込み２に
挾さまれたネジ切り部３のみの弾力であり十分な効果が
得られず、キャップコア４の外周及びシールドケース６
のネジ切り部３の間隔のバラツキ、あるいはキャップコ
ア４の表面の荒さバラツキによるコア回転トルクのバラ
ツキ、回転ムラが大きく、安定していないため、昨今の
セットユーザーでの周波数自動調整化には不適当なもの
であった。However, in this shield case 5, only the threaded part 3 sandwiched by the notch 2 has elasticity, and a sufficient effect cannot be obtained, and the outer periphery of the cap core 4 and the shield case 6
Due to variations in the spacing between the threaded parts 3 of the cap core 4 or variations in the roughness of the surface of the cap core 4, the core rotation torque is large and unstable, making it difficult for modern set users to automatically adjust the frequency. It was appropriate.

発明の目的 本発明はこのような従来の欠点を除去、軽減し、今後さ
らに進展する周波数自動調整化に蜜与することを目的と
する。OBJECTS OF THE INVENTION It is an object of the present invention to eliminate and alleviate such conventional drawbacks, and to contribute to automatic frequency adjustment, which will further develop in the future.

発明の構成 この目的を達成するために、本発明の可変高周波変成器
はシールドケースの対向する側面に設けたネジ切り部と
同一方向の天井部に、側面と平行に任意の巾にて貫通孔
を設けたものである。この構成とすることにより、キャ
ップコアの回転トルクを安定したものとすることができ
る。Structure of the Invention In order to achieve this object, the variable high frequency transformer of the present invention has a through hole of an arbitrary width parallel to the side surface in the ceiling section in the same direction as the threaded section provided on the opposite side surface of the shield case. It has been established. With this configuration, the rotational torque of the cap core can be stabilized.

実施例の説明 以下本発明の一実施例について、図面を参照しながら説
明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

第３図、第４図は本発明の一実施例によるシールドケー
スの構成を示すものである。FIGS. 3 and 4 show the structure of a shield case according to an embodiment of the present invention.

第３図は一実施例の斜視図、第４図は底面より見た平面
図であり、１はシールドケース６の天井面に設けた貫通
孔、２は切込み部、３はネジ切り部、４はキャップコア
、５はシールドケースで角型の金属ケースよりなる。な
お、内部にはドラムコアにコイルを巻回したものがセッ
トされている。3 is a perspective view of one embodiment, and FIG. 4 is a plan view seen from the bottom, in which 1 is a through hole provided on the ceiling surface of the shield case 6, 2 is a notch, 3 is a threaded portion, and 4 5 is a cap core, and 5 is a shield case, which is a rectangular metal case. Additionally, a drum core with a coil wound around it is set inside.

このような任意の巾の貫通孔１をシールドケース６のネ
ジ切り部３と同じ方向の天井面に設けることによりネジ
切り部３の側面全体の弾力効果が得られ、キャップコア
４とシールドケース５のネジ切り部３の接触部分では最
大の弾力効果となり、キャップコア４、シールドケース
５の寸法バラツキによるいかなる組合せの場合にても安
定したコア回転トルクを得ることができる。By providing such a through hole 1 of an arbitrary width on the ceiling surface in the same direction as the threaded portion 3 of the shield case 6, a resilient effect of the entire side surface of the threaded portion 3 can be obtained, and the cap core 4 and the shield case 5 The maximum elastic effect is achieved at the contact portion of the threaded portion 3, and a stable core rotation torque can be obtained in any combination due to dimensional variations in the cap core 4 and shield case 5.

発明の効果 以上のように本発明によればコア回転トルクが安定化さ
れかつキャップコア、シールドケースネジ切り部の寸法
の精度が緩和されるとともに周波数自動調整作業が容易
となり実用的効果は犬なるものであ不。Effects of the Invention As described above, according to the present invention, the core rotation torque is stabilized, the dimensional accuracy of the cap core and the shield case threaded portion is relaxed, and the automatic frequency adjustment work is facilitated, so that the practical effects are excellent. It's not a thing.

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

第１図は従来例の可変高周波変成器の斜視図、第２図は
従来例の底面より見た平面図、第３図は本発明の可変高
周波変成器の一実施例の斜視図、第４図は本発明の実施
例の底面より見た平面図である。 １・・・　貫通孔、２　・・・・切込み部、３・・・・
ネジ切り部、４・・・・・・キャップコア、５・・・・
シールドケース。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第１
図 第３図 第２図Fig. 1 is a perspective view of a conventional variable high frequency transformer, Fig. 2 is a plan view of the conventional example seen from the bottom, Fig. 3 is a perspective view of an embodiment of the variable high frequency transformer of the present invention, and Fig. 4 is a perspective view of a conventional variable high frequency transformer. The figure is a plan view of the embodiment of the present invention seen from the bottom. 1... Through hole, 2... Notch, 3...
Threaded part, 4... Cap core, 5...
shield case. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3Figure 2

Claims (1)

【特許請求の範囲】[Claims] 対向する側面に、キャップコア用ネジ切り部を有スる角
型シールドケースのネジ切り部と同一方向の天井部に側
面と平行に任意の巾にて貫通孔を設け、このシールドケ
ースにキャップコアを組込んでなる可変高周波変成器。A square shield case with a threaded part for the cap core on the opposite side has a through hole of any width parallel to the side surface in the ceiling in the same direction as the threaded part for the cap core. A variable high frequency transformer incorporating
JP11700684A 1984-06-07 1984-06-07 Variable high frequency transformer Pending JPS60260112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11700684A JPS60260112A (en) 1984-06-07 1984-06-07 Variable high frequency transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11700684A JPS60260112A (en) 1984-06-07 1984-06-07 Variable high frequency transformer

Publications (1)

Publication Number Publication Date
JPS60260112A true JPS60260112A (en) 1985-12-23

Family

ID=14701125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11700684A Pending JPS60260112A (en) 1984-06-07 1984-06-07 Variable high frequency transformer

Country Status (1)

Country Link
JP (1) JPS60260112A (en)

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