JPH0223016B2 - - Google Patents
Info
- Publication number
- JPH0223016B2 JPH0223016B2 JP57182619A JP18261982A JPH0223016B2 JP H0223016 B2 JPH0223016 B2 JP H0223016B2 JP 57182619 A JP57182619 A JP 57182619A JP 18261982 A JP18261982 A JP 18261982A JP H0223016 B2 JPH0223016 B2 JP H0223016B2
- Authority
- JP
- Japan
- Prior art keywords
- rotary transformer
- resin
- separate
- core
- transformer 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
Links
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
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
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一部断面図であ
り、第２図は、本発明に係る一実施例の１部断面
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１４をいつぱい
に流し込む。そして、樹脂１４が乾燥した後、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
たコアの断面の一部が第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および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
ものよりもすぐれる。これらと、本発明の組合せ
インダクタンスと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 type rotary transformer that allows easy roundness. A detailed explanation will be given below with reference to the drawings. FIG. 1 is a partial sectional view of a molded body according to an embodiment of the present invention, and FIG. 2 is a partial sectional view of 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 14 is completely poured into the dividing groove 13. After the resin 14 is dried, the integrated ferrite core is processed into a core for a separate rotary transformer by polishing. FIG. 2 shows a part of the cross section of the 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. In terms of characteristics, it is also superior to a non-separate rotary transformer core and a non-separate rotary transformer core with a short ring attached. Table 1 shows the results of comparing these and the combined inductance and crosstalk characteristics of the present invention.
【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
とやや高い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. In addition, a slightly higher inductance can be obtained compared to a separate type that is manufactured separately for each channel.
Also, from the perspective of crosstalk characteristics, it is better than a non-separate type with a shot ring attached.
Although the crosstalk characteristics are not good, they are much 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
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)
て、成形時、一体的に、チヤンネル用溝と反対の
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
面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。[Claims] 1. In a separate type rotary transformer core, during molding, dividing grooves are integrally formed on the surface opposite to the channel grooves to a thickness at least deeper than that required at the time of completion, and the core is fired. A method for manufacturing a separate rotary transformer core, characterized in that a separate rotary transformer core is obtained by subsequently pouring resin into the dividing groove, and after drying the resin, polishing the bottom surface of the dividing groove. 2. The method for manufacturing a separate rotary transformer core according to claim 1, wherein the resin is a conductive resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57182619A JPS5972121A (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 |
|---|---|---|---|
| JP57182619A JPS5972121A (en) | 1982-10-18 | 1982-10-18 | Manufacture of separate type rotary transformer core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5972121A JPS5972121A (en) | 1984-04-24 |
| JPH0223016B2 true JPH0223016B2 (en) | 1990-05-22 |
Family
ID=16121451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57182619A Granted JPS5972121A (en) | 1982-10-18 | 1982-10-18 | Manufacture of separate type rotary transformer core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5972121A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61272908A (en) * | 1985-05-28 | 1986-12-03 | Nippon Ferrite Ltd | Manufacture of core for rotary transformer |
-
1982
- 1982-10-18 JP JP57182619A patent/JPS5972121A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5972121A (en) | 1984-04-24 |
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