JPS5824002B2 - Heat-resistant coil that reduces temperature changes - Google Patents
Heat-resistant coil that reduces temperature changesInfo
- Publication number
- JPS5824002B2 JPS5824002B2 JP1630379A JP1630379A JPS5824002B2 JP S5824002 B2 JPS5824002 B2 JP S5824002B2 JP 1630379 A JP1630379 A JP 1630379A JP 1630379 A JP1630379 A JP 1630379A JP S5824002 B2 JPS5824002 B2 JP S5824002B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- bobbin
- ceramic material
- heat
- quartz glass
- 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
Links
Landscapes
- Coils Or Transformers For Communication (AREA)
Description
【発明の詳細な説明】
この発明は、温度変化を少なくした耐熱性ソレノイドコ
イルに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat-resistant solenoid coil that reduces temperature changes.
コイルは電気回路におけるインダクタンスを与える構成
として広く用いられている。Coils are widely used as components that provide inductance in electrical circuits.
そして例えば単層のソレノイドコイルのインダクタンス
は、近似的にはコイルの断面積に比例するものであり、
従ってコイルの直径の２乗に比例し、長さに反比例する
ものである。For example, the inductance of a single-layer solenoid coil is approximately proportional to the cross-sectional area of the coil.
Therefore, it is proportional to the square of the coil diameter and inversely proportional to the length.
従ってこの場合におけるインダクタンスの温度係数はコ
イルの線膨張率に大略等しいことが理解されよう。Therefore, it will be understood that the temperature coefficient of inductance in this case is approximately equal to the coefficient of linear expansion of the coil.
例えば銅線によるコイルの場合は、銅の線膨張係数は約
２０×１０−６／℃であるから、インダクタンスの温度
係数もほぼこの値となる。For example, in the case of a coil made of copper wire, the coefficient of linear expansion of copper is approximately 20×10 −6 /° C., so the temperature coefficient of inductance is also approximately this value.
もし、銅より犬なる線膨張率を有する、例えば合成樹脂
のボビンに銅線を巻いたとすると、コイルの熱膨張はボ
ビンの熱膨張によってより膨張させられ、コイルのイン
ダクタンスの温度係数はより犬なるものとなる。If copper wire is wound around a bobbin made of synthetic resin, which has a higher coefficient of linear expansion than copper, the thermal expansion of the coil will be increased by the thermal expansion of the bobbin, and the temperature coefficient of the coil's inductance will be even higher. Become something.
また反対に銅より小なる線膨張率を有する材質のボビン
に銅線を巻いたとしても、銅の熱膨張がボビンの熱膨張
に従うのでなければ、コイルのインダクタンスの温度係
数を小さくすることはできない。Conversely, even if copper wire is wound around a bobbin made of a material that has a smaller coefficient of linear expansion than copper, the temperature coefficient of the coil's inductance cannot be reduced unless the thermal expansion of the copper follows the thermal expansion of the bobbin. .
そこでこの発明の発明者は、低膨張セラミックス材とし
て例えば石英ガラスなどが耐熱性にすぐれ、かつ線膨張
係数も小さいこと（０，４Ｘ１０−６／℃）、および無
機接着材が耐熱性を有することに着目し、石英ガラスな
どの表面に導線をコイル状に巻き付け、その外周にきん
少の隙間を有して遊嵌する石英ガラスなどのボビンを嵌
装し、その隙間に無機接着材を充てんすれば、このコイ
ルの熱膨張は石英ガラスなどとほぼ同一の小さいものと
なり、耐熱にしてかつインダクタンスの温度変化を少な
くしたコイルを提供しうろことを発明するに至ったもの
である。Therefore, the inventor of this invention discovered that low expansion ceramic materials such as quartz glass have excellent heat resistance and have a small coefficient of linear expansion (0.4 x 10-6/°C), and that inorganic adhesives have heat resistance. Focusing on this, we wound a conducting wire in a coil shape around the surface of quartz glass, etc., fitted a loosely fitting bobbin of quartz glass with a small gap around its outer periphery, and filled the gap with an inorganic adhesive. For example, the thermal expansion of this coil is almost as small as that of quartz glass, etc., which led to the invention of a scale that provides a coil that is heat resistant and has a reduced temperature change in inductance.
この発明の他の目的や特徴は、以下のさらに詳細な説明
によって遂次明らかとなる。Other objects and features of the invention will become apparent from the following more detailed description.
以下図面を参照しつつこの発明実施例を詳述する。Embodiments of this invention will be described in detail below with reference to the drawings.
１は低膨張セラミックス材、例えば石英ガラス、よりな
る第１ボビンである。Reference numeral 1 denotes a first bobbin made of a low expansion ceramic material, such as quartz glass.
以下低膨張セラミックス材として石英ガラスを使用する
こととするが、その他、近時研究されつつあるアルミニ
ウムチタネート等のセラミックス材を使用してもよい。In the following description, quartz glass will be used as the low expansion ceramic material, but other ceramic materials such as aluminum titanate, which have been recently studied, may also be used.
２は、ボビン１の表面に導線（軟銅線）を巻き付けてな
る第１コイルである。2 is a first coil formed by winding a conducting wire (soft copper wire) around the surface of the bobbin 1.
コイル２は、ボビン１表面にダイヤモンドバイト等によ
り切削したねじ溝１ａに沿って巻き付ける。The coil 2 is wound on the surface of the bobbin 1 along the thread groove 1a cut with a diamond cutting tool or the like.
そしてコイル２の一端２ａにはボビン１にダイヤモンド
工具等により穴１ｂを穿削し、この穴１ｂにコイルの一
端２ａを通して固定する。A hole 1b is drilled in the bobbin 1 at one end 2a of the coil 2 using a diamond tool or the like, and the one end 2a of the coil is passed through the hole 1b and fixed.
３はボビン１に巻き付けたコイル２の外周に対し、きん
少の隙間を有して遊嵌する程度の内径を有しかつ適宜の
肉厚（例えばコイル２の線径の約１０倍、以下同様）を
有する、低膨張セラミックス材第２ボビンである。3 has an inner diameter that allows it to fit loosely with the outer circumference of the coil 2 wound around the bobbin 1 with a small gap, and has an appropriate wall thickness (for example, about 10 times the wire diameter of the coil 2, the same applies hereinafter). ) is a low expansion ceramic material second bobbin.
４は、ボビン３の表面に導線（軟銅線）を巻き付けてな
る第２コイルである。4 is a second coil formed by winding a conducting wire (soft copper wire) around the surface of the bobbin 3.
コイル４は、ボビン３表面にダイヤモンドバイト等によ
り切削したねじ溝３ａに沿って巻き付ける。The coil 4 is wound on the surface of the bobbin 3 along the thread groove 3a cut with a diamond cutting tool or the like.
そしてコイル４の一端４ａにはボビン３端面にダイヤモ
ンド工具等により溝３ｂを穿削し、この溝３ｂにコイル
の一端４ａを挾んで固定する。A groove 3b is cut in the end surface of the bobbin 3 using a diamond tool or the like in one end 4a of the coil 4, and the one end 4a of the coil is clamped and fixed in this groove 3b.
さらにコイル４の他端４ｂにもボビン３端面に溝３ｃを
穿削し、これに他端４ｂを固定する。Furthermore, a groove 3c is cut in the end surface of the bobbin 3 at the other end 4b of the coil 4, and the other end 4b is fixed thereto.
そしてコイル２の他端２ｂとコイル４の他端４ｂとを同
位相にして、ボビン３をボビン１の外周に嵌装する。Then, the bobbin 3 is fitted onto the outer periphery of the bobbin 1 with the other end 2b of the coil 2 and the other end 4b of the coil 4 in the same phase.
さらに他端２ｂと４ｂとを、高温ハンダ等の公知の手法
により電気的に接続し、コイル２と４とを直列に接続す
る。Furthermore, the other ends 2b and 4b are electrically connected by a known method such as high-temperature soldering, and the coils 2 and 4 are connected in series.
５はボビン３に巻き付けたコイル４の外周に対し、きん
少の隙間を有して遊嵌する程度の内径を有しかつ適宜の
肉厚を有する、低膨張セラミックス材第３ボビンである
。Reference numeral 5 denotes a third bobbin made of a low expansion ceramic material, which has an inner diameter that allows it to fit loosely around the outer periphery of the coil 4 wound around the bobbin 3 with a small gap, and has an appropriate wall thickness.
ボビン５の一端にはつば５ａを一体に張り出す。A collar 5a is integrally protruded from one end of the bobbin 5.
そしてこれら相互に嵌装されたボビン１，３および５の
相互間の隙間には、公知の無機接着材６で充てんし、加
熱固化せしめる。The gaps between the bobbins 1, 3, and 5 fitted together are filled with a known inorganic adhesive 6 and heated to solidify.
かくしてコイル組立ＣＡが構成される。The coil assembly CA is thus constructed.
７はその中間を螺合して一体化しうるようにした金属ケ
ーシングである。7 is a metal casing which can be integrated by screwing the intermediate part thereof together.
そして、ガスケット７ａを介してつば５ａを挾持し、ケ
ーシング７内にコイル組立９Ａを固定する。The coil assembly 9A is then fixed within the casing 7 by sandwiching the collar 5a via the gasket 7a.
８はケーシング７内の空隙に充てんされた、公知の断熱
材である。Reference numeral 8 denotes a known heat insulating material that fills the void inside the casing 7.
９はコードであり、コードクランプ金具７ｂによってケ
ーシング７に固定され、その先端は、コイルの一端２ａ
および４ａと電気的に接続される。Reference numeral 9 denotes a cord, which is fixed to the casing 7 by a cord clamp fitting 7b, and the tip thereof is connected to one end 2a of the coil.
and 4a.
なおこの接続の間において、ボビン１に無機接着材など
で固定しておいてもよい。Note that during this connection, it may be fixed to the bobbin 1 with an inorganic adhesive or the like.
この実施例コイルを例えば自動溶接ロボットの溶接トー
チ近辺に設けて、ワークセンサとして使用したときは、
その周囲の高温によって、コイルも加熱されるが、コイ
ル２および４は適宜の肉厚を有する低膨張セラミックス
材のボビンと一体化されている故、金属よりなるコイル
の犬なる熱膨張は、これと一体のボビンの小なる熱膨張
によって押えられるため、コイルの熱膨張はボビン１゜
３および５とほぼ同一の（コイルの金属材料の約１７５
０）小さいものとなり、熱によるインダクタンスの変化
も小さくなる。When this example coil is installed near the welding torch of an automatic welding robot and used as a workpiece sensor, for example,
The coils are also heated by the high temperature surrounding them, but since coils 2 and 4 are integrated with a bobbin made of low-expansion ceramic material with an appropriate wall thickness, the thermal expansion of the metal coils is due to this. Because the thermal expansion of the coil is suppressed by the small thermal expansion of the bobbin that is integral with the coil, the thermal expansion of the coil is almost the same as bobbin 1.
0) It is small, and the change in inductance due to heat is also small.
従って、温度によるセンシング値の補正を行なう場合も
正確な補償が期待しうるものである。Therefore, accurate compensation can be expected even when correcting the sensing value based on temperature.
前述実施例は多層コイルとしたものであり、センサとし
て使用する場合に有効なものであるが、これをコイル２
のみとして単相コイルとしてもよく、その他この発明の
技術的範囲内における各構成の均等物との置換も、また
この発明の技術的範囲に含まれるものである。The above embodiment uses a multilayer coil, which is effective when used as a sensor.
It is also possible to use a single-phase coil as a single-phase coil, and replacement with equivalents of each structure within the technical scope of the present invention is also included within the technical scope of the present invention.
この発明は前述のとおりであるから、簡単な構成で耐熱
低膨張のコイルを提供しうる、顕著なる効果を奏するも
のである。Since the present invention is as described above, it can provide a heat-resistant, low-expansion coil with a simple structure, and has a remarkable effect.
図面はこの発明一実施例を示す縦断側面図である。
１．３および５・・・・・・低膨張セラミックス材ボビ
ン、２および４・・・・・・コイル、６・・・・・・無
機接着材。The drawing is a longitudinal sectional side view showing one embodiment of the present invention. 1.3 and 5...low expansion ceramic material bobbin, 2 and 4...coil, 6...inorganic adhesive material.
Claims (1)
線をコイル状に巻き付け、その外周にきん少の隙間を有
して遊嵌する石英ガラスなどの低膨張セラミックス材ボ
ビンを嵌装し、この両セラミックス材の隙間を無機接着
材で充てんしてなる、温度変化を少なくした耐熱性コイ
ル。 ２ 石英ガラスなどの低膨張セラミックス材の表面に導
線をコイル状に巻き付け、その外周にきん少の隙間を有
して遊嵌する石英ガラスなどの低膨張セラミックス材ボ
ビンを嵌装し、さらにこのセラミックス材ボビン外周に
導線をコイル状に巻き付け、このようにして導線コイル
を巻き付けたボビンを１以上遂次嵌装し、前記これらコ
イルの始終端を相互に電気的に接続して多層となし、さ
らに前記各隙間には無機接着材が充てんされてなる、耐
熱性コイル。[Claims] 1. A conductive wire is wound in a coil shape on the surface of a low expansion ceramic material such as quartz glass, and a low expansion ceramic material bobbin such as quartz glass is fitted around the outer circumference with a small gap. A heat-resistant coil that reduces temperature changes by filling the gap between both ceramic materials with an inorganic adhesive. 2. A conductive wire is wound in a coil shape on the surface of a low expansion ceramic material such as quartz glass, a bobbin of low expansion ceramic material such as quartz glass is fitted loosely around the outer periphery of the wire with a small gap, and then this ceramic material is Winding a conductive wire in a coil shape around the outer circumference of a material bobbin, successively fitting one or more bobbins wound with the conductive wire coil in this way, electrically connecting the beginning and end ends of these coils to each other to form a multilayer, and further A heat-resistant coil in which each gap is filled with an inorganic adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1630379A JPS5824002B2 (en) | 1979-02-14 | 1979-02-14 | Heat-resistant coil that reduces temperature changes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1630379A JPS5824002B2 (en) | 1979-02-14 | 1979-02-14 | Heat-resistant coil that reduces temperature changes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55108717A JPS55108717A (en) | 1980-08-21 |
| JPS5824002B2 true JPS5824002B2 (en) | 1983-05-18 |
Family
ID=11912765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1630379A Expired JPS5824002B2 (en) | 1979-02-14 | 1979-02-14 | Heat-resistant coil that reduces temperature changes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5824002B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61193308U (en) * | 1985-05-27 | 1986-12-02 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0055050B1 (en) * | 1980-12-09 | 1985-04-03 | Matsushita Electric Industrial Co., Ltd. | Lamination-wound chip coil and method for manufacturing the same |
| DE102006001817A1 (en) * | 2006-01-13 | 2007-07-26 | Forschungszentrum Karlsruhe Gmbh | Electromagnet made of temperature-resistant material |
-
1979
- 1979-02-14 JP JP1630379A patent/JPS5824002B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61193308U (en) * | 1985-05-27 | 1986-12-02 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55108717A (en) | 1980-08-21 |
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