JPS642428Y2 - - Google Patents
Info
- Publication number
- JPS642428Y2 JPS642428Y2 JP1984192972U JP19297284U JPS642428Y2 JP S642428 Y2 JPS642428 Y2 JP S642428Y2 JP 1984192972 U JP1984192972 U JP 1984192972U JP 19297284 U JP19297284 U JP 19297284U JP S642428 Y2 JPS642428 Y2 JP S642428Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- case
- resin
- tape
- filled
- 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
- 229920005989 resin Polymers 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Insulating Of Coils (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はコイル装置に係り、特にケース内に充
填した樹脂によりコイルをケース内で固定するよ
うにしたコイル装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a coil device, and particularly to a coil device in which a coil is fixed within a case by resin filled in the case.
従来のこの種のコイル装置について第３〜５図
に基づいて説明する。
A conventional coil device of this type will be explained based on FIGS. 3 to 5.
図に示すコイル装置は電磁式センサに用いられ
るコイル装置の例である。 The coil device shown in the figure is an example of a coil device used in an electromagnetic sensor.
このコイル装置は、筒状のケース１内の中央底
部にマグネツト２が配され、このマグネツト２の
上端には補助極３が設けられ、マグネツト２の外
周部にはコイル４が位置し、コイル４の両端子は
リード線５によつてターミナル６に導かれ、ター
ミナル６からは出力線７が外部に導出し、これら
ターミナル６、リード線５、補助極３、コイル
４、マグネツト２はケース１内に充填された合成
樹脂８によつてモールドされ、ケース１内に固定
されているものである。 In this coil device, a magnet 2 is disposed at the center bottom of a cylindrical case 1, an auxiliary pole 3 is provided at the upper end of the magnet 2, a coil 4 is located on the outer periphery of the magnet 2, and the coil 4 is located at the outer circumference of the magnet 2. Both terminals are led to a terminal 6 by a lead wire 5, and an output wire 7 is led out from the terminal 6, and these terminal 6, lead wire 5, auxiliary pole 3, coil 4, and magnet 2 are It is molded with a synthetic resin 8 filled with and fixed inside the case 1.
そして、このような電磁センサは、ケース１の
底部が、強磁性体からなる回転体９の外周付近に
近接して配されることで回転体９の回転数、回転
速度等を検出する。 Such an electromagnetic sensor detects the number of rotations, rotation speed, etc. of the rotating body 9 by disposing the bottom of the case 1 close to the outer circumference of the rotating body 9 made of a ferromagnetic material.
即ち、回転体９の外周部には歯車状の突起９ａ
が形成されているとすると、回転体９の回転によ
つてコイル４を通る磁束密度に変化が生ずるか
ら、この変化に応じてコイル４には電流が流れ
る。このパルス信号を検出することにより、通過
した突起９ａの数を知ることができるから、回転
体９の回転数あるいは回転速度を検出できるので
ある。 That is, a gear-shaped protrusion 9a is provided on the outer circumference of the rotating body 9.
is formed, the rotation of the rotating body 9 causes a change in the magnetic flux density passing through the coil 4, and a current flows through the coil 4 in response to this change. By detecting this pulse signal, it is possible to know the number of protrusions 9a that have passed, and therefore the number of rotations or the rotational speed of the rotating body 9 can be detected.
ところで、上記の電磁センサにあつては、コイ
ル４、マグネツト２等の部品をケース１内に固定
するため、及びケース１の開口から水、ガス等の
侵入を阻止するためケース１内に樹脂を充填して
いるのである。この磁気センサをエンジンなどの
発熱体に取付けて使用している際中に加熱、冷却
の繰返し温度サイクルを頻繁に受けるようにな
り、銅などからなるコイル４と樹脂８との熱膨張
率の差異により、コイル４が断線することがあつ
た。しかもこのような現象は、コイル４等の部品
を確実に固定するために注入時の粘度の低い樹脂
を用いた場合、あるいはコイル４の線径が小さい
場合は極めて著しいものであつた。 By the way, in the case of the above electromagnetic sensor, resin is placed inside the case 1 in order to fix parts such as the coil 4 and the magnet 2 inside the case 1, and to prevent water, gas, etc. from entering through the opening of the case 1. It is being filled. When this magnetic sensor is attached to a heat generating element such as an engine and used, it is frequently subjected to repeated temperature cycles of heating and cooling, resulting in a difference in the coefficient of thermal expansion between the coil 4 made of copper or the like and the resin 8. As a result, the coil 4 was sometimes disconnected. Moreover, such a phenomenon is extremely severe when a resin having a low viscosity at the time of injection is used to securely fix parts such as the coil 4, or when the wire diameter of the coil 4 is small.
因みに、この種の電磁センサに用いられるコイ
ル４の線径は0.06〜0.10mm程度、コイル４の巻数
は4000〜5000であり、コイル材の銅の熱膨張係数
は16×10-6〔cm／cm／℃〕、樹脂の熱膨張係数は35
〜500×10-6〔cm／cm／℃〕である。 Incidentally, the wire diameter of the coil 4 used in this type of electromagnetic sensor is about 0.06 to 0.10 mm, the number of turns of the coil 4 is 4000 to 5000, and the coefficient of thermal expansion of the copper of the coil material is 16 × 10 -6 [cm/ cm/℃], the thermal expansion coefficient of the resin is 35
~500×10 -6 [cm/cm/℃].
そこで、上記不都合を解消するために、第４図
に示す如きコイル４の外周にテープ１０を巻回す
る方策が講じられたが、テープ１０は第５図の如
く基材１０ａに接着剤１０ｂを積層したものであ
つて、接着剤１０ｂがコイル４の外周面に形成さ
れる凹凸面に入り込んでコイル４自身に接触する
とともに、接着剤１０ｂが上述の如きモールド用
の樹脂と全く同様に作用し、結果的にはコイル４
を十分に保護することはできないものであつた。 Therefore, in order to solve the above-mentioned inconvenience, a measure was taken to wrap a tape 10 around the outer periphery of the coil 4 as shown in FIG. The adhesive 10b penetrates into the uneven surface formed on the outer peripheral surface of the coil 4 and comes into contact with the coil 4 itself, and the adhesive 10b acts in exactly the same way as the molding resin described above. , as a result, coil 4
It was not possible to adequately protect the
本考案は上記の点に鑑みてなされたもので、ケ
ース内に充填されるモールド用の樹脂が直接コイ
ルに接触することはなく、十分にコイルを保護で
きるようにしたコイル装置の提供を目的としてい
る。
The present invention was created in view of the above points, and aims to provide a coil device that can sufficiently protect the coil without the molding resin filled in the case coming into direct contact with the coil. There is.
上記目的を達成するための構成として、本考案
は、コイルの周囲に接着作用を有しない材料から
なるテープを巻回し、ケース内への充填した樹脂
とコイルとを遮断する構成を特徴としている。
In order to achieve the above object, the present invention is characterized in that a tape made of a non-adhesive material is wound around the coil to isolate the coil from the resin filled in the case.
第１図は本考案実施例のコイルを示す。コイル
４はボビン１１に巻回されており、コイル４の外
周部全体及びボビン１１の外周部を被覆するよう
にテープ１２が巻回されている。このテープ１２
は第２図に示すように接着剤が表面に塗布されて
おらず、コイル４に対し接着性を有しないもので
あつて、例えばフツ素系樹脂などのように温度変
化に安定で、伸縮性も備えた単一材料からなるも
のが好ましいが、エポキシ系樹脂基材の表面にフ
ツ素系樹脂の塗膜を形成するような複合材料にて
形成することも可能である。
FIG. 1 shows a coil according to an embodiment of the present invention. The coil 4 is wound around a bobbin 11, and a tape 12 is wound so as to cover the entire outer periphery of the coil 4 and the outer periphery of the bobbin 11. This tape 12
As shown in Figure 2, the adhesive is not applied to the surface and does not have adhesive properties to the coil 4, and is stable against temperature changes and has elasticity, such as fluorine resin. Although it is preferable to use a single material having the following properties, it is also possible to use a composite material that forms a coating film of fluororesin on the surface of an epoxy resin base material.
伸縮性は、巻回されたコイル４外周の凹凸に沿
つてコイル４に密着し、モールドされる樹脂８が
コイル４の外周面に接触しないようにするのに効
果的である。 The stretchability is effective in keeping the coil 4 in close contact with the coil 4 along the irregularities of the outer periphery of the wound coil 4 and preventing the resin 8 to be molded from coming into contact with the outer periphery of the coil 4.
このようなコイル４をケース１内に配し、樹脂
８を充填すると、コイルその他の部品はケース１
内に確実に固定されるが、樹脂８は完全にコイル
外表面より遮断され、熱膨張係数に差があつても
コイルが樹脂の加熱時、冷却時に力を受けること
はない。 When such a coil 4 is placed in the case 1 and filled with resin 8, the coil and other components are fixed to the case 1.
However, the resin 8 is completely isolated from the outer surface of the coil, so that the coil is not subjected to any force when the resin is heated or cooled, even if there is a difference in thermal expansion coefficient.
またテープ１２もコイル４とは接着することが
ないから、熱膨張係数の差によつて上述の如くコ
イルが力を受けることはない。 Furthermore, since the tape 12 is not bonded to the coil 4, the coil is not subjected to any force as described above due to the difference in coefficient of thermal expansion.
本考案は以上の如くであるから、コイルは断線
することがなく、確実にケース内に固定される。
しかもその構造は、単にテープをコイル外周に巻
回するだけであるから、簡単であり、製造コスト
も低く抑えることができる。
Since the present invention is as described above, the coil will not be disconnected and will be securely fixed within the case.
Moreover, the structure is simple and the manufacturing cost can be kept low because the tape is simply wound around the outer periphery of the coil.
第１図は本考案実施例の要部断面図、第２図は
実施例に用いたテープの断面図、第３図は従来装
置の断面図、第４図は他の従来装置の要部斜視
図、第５図は第４図に示す従来装置に用いるテー
プの断面図である。
１……ケース、４……コイル、８……樹脂、１
２……テープ。
Fig. 1 is a sectional view of the main part of the embodiment of the present invention, Fig. 2 is a sectional view of the tape used in the embodiment, Fig. 3 is a sectional view of the conventional device, and Fig. 4 is a perspective view of the main part of another conventional device. 5 is a sectional view of a tape used in the conventional device shown in FIG. 4. 1...Case, 4...Coil, 8...Resin, 1
2...Tape.
Claims (1)
ルをケース内に充填した樹脂によりケース内で固
定したコイル装置において、前記コイルの外周面
に少なくともコイルに対して接着作用を有しない
材料からなるテープを巻回し、前記充填した樹脂
とコイルの線材とが直接接触しないようにしたこ
とを特徴とするコイル装置。 In a coil device in which a coil formed by winding a wire rod with a small diameter around a bobbin is fixed in a case with resin filled in the case, a tape made of a material that does not have an adhesive action on at least the coil on the outer peripheral surface of the coil. A coil device characterized in that the filled resin and the wire of the coil do not come into direct contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984192972U JPS642428Y2 (en) | 1984-12-21 | 1984-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984192972U JPS642428Y2 (en) | 1984-12-21 | 1984-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61109124U JPS61109124U (en) | 1986-07-10 |
| JPS642428Y2 true JPS642428Y2 (en) | 1989-01-20 |
Family
ID=30750389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984192972U Expired JPS642428Y2 (en) | 1984-12-21 | 1984-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS642428Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5279257A (en) * | 1975-12-25 | 1977-07-04 | Matsushita Electric Ind Co Ltd | Method of forming electric field relaxation layer having air gap therein |
-
1984
- 1984-12-21 JP JP1984192972U patent/JPS642428Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5279257A (en) * | 1975-12-25 | 1977-07-04 | Matsushita Electric Ind Co Ltd | Method of forming electric field relaxation layer having air gap therein |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61109124U (en) | 1986-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS642428Y2 (en) | ||
| CA1252150A (en) | Magnetic field sensor | |
| JPH0424449Y2 (en) | ||
| JPH0445420Y2 (en) | ||
| JPS5824772Y2 (en) | Temperature sensor with holder | |
| JPS5819466Y2 (en) | Structure of temperature sensor | |
| JPH0736290Y2 (en) | Magnetic pickup sensor | |
| JPH059655Y2 (en) | ||
| JPS5937037U (en) | Liquid heater temperature control device | |
| JPH0622972Y2 (en) | Mold coil | |
| JPS6237316Y2 (en) | ||
| JPH0449801Y2 (en) | ||
| JPH0422300Y2 (en) | ||
| JPS597714Y2 (en) | Overheat protector for wire wheels | |
| JPS639973Y2 (en) | ||
| JPH0731524Y2 (en) | Magnetic core for inserting lead members | |
| JPH049715Y2 (en) | ||
| JPH038056Y2 (en) | ||
| JPS5838509Y2 (en) | temperature detection element | |
| JP2504096Y2 (en) | Engine mission oil temperature sensor | |
| JPS6367837U (en) | ||
| JPS6020884Y2 (en) | Electromagnetic drive winding body | |
| JPS5866535U (en) | temperature detection element | |
| JPS6040937U (en) | temperature switch | |
| JPS6037710Y2 (en) | Tape start/end detection device |