JPH0223015B2 - - Google Patents

Info

Publication number
JPH0223015B2
JPH0223015B2 JP57182618A JP18261882A JPH0223015B2 JP H0223015 B2 JPH0223015 B2 JP H0223015B2 JP 57182618 A JP57182618 A JP 57182618A JP 18261882 A JP18261882 A JP 18261882A JP H0223015 B2 JPH0223015 B2 JP H0223015B2
Authority
JP
Japan
Prior art keywords
rotary transformer
separate
transformer core
resin
core
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
Application number
JP57182618A
Other languages
Japanese (ja)
Other versions
JPS5972120A (en
Inventor
Toyohiko Murakami
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.)
Proterial Ltd
Original Assignee
Nippon Ferrite 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 Nippon Ferrite Ltd filed Critical Nippon Ferrite Ltd
Priority to JP57182618A priority Critical patent/JPS5972120A/en
Publication of JPS5972120A publication Critical patent/JPS5972120A/en
Publication of JPH0223015B2 publication Critical patent/JPH0223015B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は、セパレート型ロータリートランスコ
アの製造方法に関するものである。 従来、セパレート型ロータリートランスコアを
製造する場合は、各チヤンネルごとに別々に成形
し、焼成して得ていた。しかし、この方法による
と、各々の真円度がとりにくく、また、各チヤン
ネルを組み合わせた場合も同様に、真円度がとり
にくいという欠点があつた。 本発明は、上記の欠点を改善するために、真円
度のとりやすいセパレート型ロータリートランス
コアの製造方法を提供するものである。 以下、図面により詳細に説明する。第１図は本
発明に係る一実施例の成形体の断面の一部であ
り、第２図は、本発明に係る一実施例の焼成体一
部の断面図である。第１図の如く成形時におい
て、一体的にチヤンネル溝１１，１２及び分割溝
１３を形成しておく。この時、分割溝１３の深さ
は、所望するセパレート型ロータリートランス用
コアの厚さより大きいことは当然である。そし
て、該成形体を焼成し、前記分割溝１３に樹脂１
４をいつぱいに流し込む。そして、樹脂１４が乾
燥したら、前記一体のフエライトコアを研磨によ
つてセパレート型ロータリートランス用コアに加
工する。加工されてセパレート型ロータリートラ
ンス用コアとなつたコアの一部断面が第２図であ
る。この方法により得られたセパレート型ロータ
リートランス用コアは、成形から一体物として工
程を通つているので真円度が非常にとりやすいと
いうメリツトがある。また、特性の面からノンセ
パレート型ロータリートランスコア或いはノンセ
パレート型ロータリートランスコアにシヨートリ
ングを装着したものと本発明によるものとで組合
せインダクタンス、クロストーク特性を比較した
結果を第１表に示す。 The present invention relates to a method for manufacturing a separate rotary transformer core. Conventionally, when manufacturing a separate rotary transformer core, each channel was separately molded and fired. However, according to this method, it is difficult to obtain roundness for each channel, and it is also difficult to obtain roundness when the channels are combined. In order to improve the above-mentioned drawbacks, the present invention provides a method for manufacturing a separate rotary transformer core that allows easy roundness. A detailed explanation will be given below with reference to the drawings. FIG. 1 is a partial cross-sectional view of a molded body according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a portion of a fired body according to an embodiment of the present invention. As shown in FIG. 1, channel grooves 11, 12 and dividing grooves 13 are integrally formed during molding. At this time, it is natural that the depth of the dividing groove 13 is greater than the desired thickness of the separate rotary transformer core. Then, the molded body is fired, and the resin 1 is placed in the dividing groove 13.
Pour 4 to the full. After the resin 14 is dried, the integrated ferrite core is processed into a separate rotary transformer core by polishing. FIG. 2 shows a partial cross section of a core that has been processed into a core for a separate type rotary transformer. The core for a separate type rotary transformer obtained by this method has the advantage that it is very easy to maintain roundness because it goes through the process as an integral piece from molding. Table 1 shows the results of comparing the combined inductance and crosstalk characteristics of a non-separate rotary transformer core or a non-separate rotary transformer core equipped with a shot ring and the one according to the present invention in terms of characteristics.

【表】 ここで、本発明によるセパレート型に使用した
樹脂は、不導体樹脂（エポキシ系）である。 組合せインダクタンスの面で考えると、ノンセ
パレート型に比べて、本発明によるセパレート型
は多少インダクタンスが悪くなるが、シヨートリ
ングを装着したノンセパレート型よりは高いイン
ダクタンスを得ることができる。また、各チヤン
ネルごとに別々に製造したセパレート型と比べる
とほぼ同等のインダクタンスを得ることができ
る。また、クロストーク特性の面から考えると、
シヨートリングを装着したノンセパレート型より
は、クロストーク特性は良くないが、ノンセパレ
ート型よりはかなり改善されている。また、樹脂
を導電性の樹脂を使用すれば、不導体樹脂を使用
した場合より、大きいクロストーク特性の改善を
得ることができる。 以上詳記した如く、本発明によるセパレート型
ロータリートランス用コアは、インダクタンスの
低下を少なくし、クロストークの改善、真円度の
とりやすさを得ることができるものであり、製造
方法として、多大の効果を得るものである。[Table] Here, the resin used for the separate mold according to the present invention is a nonconductive resin (epoxy type). Considering the combined inductance, the separate type according to the present invention has somewhat worse inductance than the non-separate type, but it can obtain higher inductance than the non-separate type equipped with a short ring. Furthermore, it is possible to obtain approximately the same inductance as compared to a separate type manufactured separately for each channel. Also, considering the crosstalk characteristics,
The crosstalk characteristics are not as good as the non-separate type with a shot ring attached, but they are considerably improved compared to the non-separate type. Further, if a conductive resin is used as the resin, a greater improvement in crosstalk characteristics can be obtained than when a non-conductive resin is used. As described in detail above, the core for a separate rotary transformer according to the present invention can reduce the decrease in inductance, improve crosstalk, and easily obtain roundness, and can be used in many ways as a manufacturing method. This is to obtain the effect of

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

第１図は本発明に係る一実施例の成形体の断面
の一部であり、第２図は本発明に係る一実施例の
断面の一部である。 １１，１２……チヤンネル用溝、１３……分割
溝、１４……樹脂。 FIG. 1 is a part of a cross section of a molded article according to an embodiment of the present invention, and FIG. 2 is a part of a cross section of an embodiment of the present invention. 11, 12...channel groove, 13...dividing groove, 14...resin.

Claims (1)

【特許請求の範囲】 １ セパレート型ロータリートランスコアにおい
て、一体的に、チヤンネル用溝と同一面に分割溝
を少なくとも完成時に必要とする厚みより深く形
成しておき、該コアを焼成後、前記分割溝に樹脂
を流し込み、樹脂の乾燥後、分割溝底部を研磨す
ることによつてセパレート型ロータリートランス
コアを得ることを特徴とするセパレート型ロータ
リートランスコアの製造方法。 ２ 特許請求の範囲第１項における分割溝を焼成
前もしくは焼成後、加工により得ることを特徴と
するセパレート型ロータリートランスコアの製造
方法。 ３ 特許請求の範囲第１項或いは第２項におい
て、樹脂が導電性樹脂であることを特徴とするセ
パレート型ロータリートランスコアの製造方法。[Scope of Claims] 1. In a separate type rotary transformer core, a dividing groove is integrally formed on the same surface as the channel groove to a depth at least deeper than that required at the time of completion, and after firing the core, the dividing groove is formed on the same surface as the channel groove. 1. A method for manufacturing a separate rotary transformer core, the method comprising: pouring resin into the grooves, drying the resin, and then polishing the bottom of the dividing groove to obtain a separate rotary transformer core. 2. A method for manufacturing a separate rotary transformer core, characterized in that the dividing grooves set forth in claim 1 are obtained by processing before or after firing. 3. The method for manufacturing a separate rotary transformer core according to claim 1 or 2, wherein the resin is a conductive resin.
JP57182618A 1982-10-18 1982-10-18 Manufacture of separate type rotary transformer core Granted JPS5972120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57182618A JPS5972120A (en) 1982-10-18 1982-10-18 Manufacture of separate type rotary transformer core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57182618A JPS5972120A (en) 1982-10-18 1982-10-18 Manufacture of separate type rotary transformer core

Publications (2)

Publication Number Publication Date
JPS5972120A JPS5972120A (en) 1984-04-24
JPH0223015B2 true JPH0223015B2 (en) 1990-05-22

Family

ID=16121433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57182618A Granted JPS5972120A (en) 1982-10-18 1982-10-18 Manufacture of separate type rotary transformer core

Country Status (1)

Country Link
JP (1) JPS5972120A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS632307A (en) * 1986-06-20 1988-01-07 Nippon Ferrite Ltd Manufactur of rotary transformer
JPH0747333Y2 (en) * 1993-01-26 1995-11-01 小川テント株式会社 Luggage guidance device

Also Published As

Publication number Publication date
JPS5972120A (en) 1984-04-24

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