JPH08153625A - Linearity coil - Google Patents
Linearity coilInfo
- Publication number
- JPH08153625A JPH08153625A JP29664994A JP29664994A JPH08153625A JP H08153625 A JPH08153625 A JP H08153625A JP 29664994 A JP29664994 A JP 29664994A JP 29664994 A JP29664994 A JP 29664994A JP H08153625 A JPH08153625 A JP H08153625A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- hole
- coil
- base
- winding
- 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
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 claims abstract description 6
- 230000001070 adhesive effect Effects 0.000 claims description 21
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical group N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 abstract description 16
- 229920005989 resin Polymers 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 7
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、テレビジョン受像機、
ディスプレイ等ブラウン管を用いた画像装置に用いられ
るリニアリティコイルに関する。BACKGROUND OF THE INVENTION The present invention relates to a television receiver,
The present invention relates to a linearity coil used in an image device using a cathode ray tube such as a display.
【０００２】[0002]
【従来の技術】従来のリニアリティコイルは、図６に示
すように、両端に鍔を有するドラム型磁性コアａに巻線
ｂが巻装され、該磁性コアａの一方の鍔にフェライト磁
石ｃが固着されたコイル本体が樹脂製の基台ｄに載置さ
れ、巻線ｂの端末が基台ｄに植設されたリード端子ｅ，
ｅの付け根に絡げられて半田付けされており、フェライ
ト磁石ｃにより、ドラム型磁性コアａに所定のバイアス
磁界を与え、水平偏向の直線性を得るようにしている。
ｆはコイル本体を被覆する外装体である。2. Description of the Related Art In a conventional linearity coil, as shown in FIG. 6, a winding b is wound around a drum type magnetic core a having flanges at both ends, and a ferrite magnet c is attached to one flange of the magnetic core a. The fixed coil body is placed on the resin base d, and the end of the winding b is embedded in the lead terminal e.
It is entangled at the root of e and soldered, and a predetermined bias magnetic field is applied to the drum-shaped magnetic core a by the ferrite magnet c so as to obtain linearity of horizontal deflection.
f is an exterior body that covers the coil body.
【０００３】[0003]
【発明が解決しようとする課題】このリニアリティコイ
ルを用いた例えばテレビジョン受像機の水平偏向回路に
は、周波数が１５．７５又は３１．５ＫＨｚの鋸歯状波
電流が流れ、この電流によりリニアリティコイルは、磁
歪現象でドラム型コアａが振動し、聴感上不快なうなり
音を発生する。このうなり音は、電流が大きいほど、又
インダクタンス値が大きいほど不快感を増す。A sawtooth wave current having a frequency of 15.75 or 31.5 KHz flows in a horizontal deflection circuit of a television receiver, for example, which uses this linearity coil. The drum-shaped core a vibrates due to the magnetostriction phenomenon, and produces a growling noise that is unpleasant to the listener. The growling noise becomes more uncomfortable as the current becomes larger and the inductance value becomes larger.
【０００４】本発明は、聴感上不快なうなり音を抑制す
ることをその目的とするものである。An object of the present invention is to suppress a growling noise that is unpleasant to the sense of hearing.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記の目的を
達成するために、巻線を巻装したドラム型磁性コアの一
方の鍔に磁石を固着したコイル本体と該コイル本体を支
持する基台とから成るリニアリティコイルにおいて、該
基台に貫通孔が形成され、巻線に流れる電流による前記
磁性コア内の磁束の方向に平行な貫通孔の壁面に前記磁
石を軟質接着剤により接着固定したことを特徴とする。In order to achieve the above object, the present invention supports a coil main body having a magnet fixed to one flange of a drum type magnetic core around which a winding is wound, and the coil main body. In a linearity coil including a base, a through hole is formed in the base, and the magnet is bonded and fixed to the wall surface of the through hole parallel to the direction of the magnetic flux in the magnetic core due to the current flowing through the winding with a soft adhesive. It is characterized by having done.
【０００６】[0006]
【作用】本発明によれば、巻線に電流を流すと、磁性コ
アは、磁歪現象により磁性コア内の磁束の方向に振動す
る。この振動は磁束の方向に平行な貫通孔の壁面に平行
であり、該壁面に垂直に加わる振動の分力は零であり、
該壁面に平行な振動エネルギーは軟質樹脂に吸収される
から、基台に伝わる振動が抑制される。したがって、リ
ニアリティコイルから聴感上不快なうなり音が抑制され
る。According to the present invention, when a current is applied to the winding, the magnetic core vibrates in the direction of the magnetic flux in the magnetic core due to the magnetostriction phenomenon. This vibration is parallel to the wall surface of the through hole parallel to the direction of the magnetic flux, and the component force of the vibration applied perpendicularly to the wall surface is zero.
Since the vibration energy parallel to the wall surface is absorbed by the soft resin, the vibration transmitted to the base is suppressed. Therefore, the growling noise that is unpleasant to the listener is suppressed from the linearity coil.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面につき説明す
る。Embodiments of the present invention will now be described with reference to the drawings.
【０００８】図１は、本発明の１実施例を示す。同図に
おいて、１はコイル本体、２は樹脂製の基台を示す。コ
イル本体１は、巻線３が巻装された例えばフェライトか
ら成るドラム型磁性コア４の一方の鍔にこれと同径の例
えば１５ｍｍφ、厚さ１０ｍｍのバリウムフェライトか
ら成る磁石５が硬化した後の硬度がショア硬度Ｄ９０の
硬質エポキシ樹脂接着剤により接着されたもので、前記
基台２の貫通孔６に挿入され、硬化した後の硬度が例え
ばショア硬度Ａ６８の軟質接着剤７、例えば軟質エポキ
シ樹脂により貫通孔６の壁面に接着固定される。巻線３
の端末は、図示しないが、基台２の下面に植設されたリ
ード端子８に絡げられて半田付けされる。FIG. 1 shows an embodiment of the present invention. In the figure, 1 is a coil body, and 2 is a resin base. The coil body 1 is formed by hardening one magnet of a drum type magnetic core 4 made of, for example, ferrite around which the winding wire 3 is wound, for example, a magnet 5 made of barium ferrite having the same diameter of 15 mmφ and a thickness of 10 mm. A hard epoxy resin adhesive having a hardness of Shore D90, which is inserted into the through hole 6 of the base 2 and hardened, for example, a soft adhesive 7 having a Shore hardness of A68, such as a soft epoxy resin. Is adhered and fixed to the wall surface of the through hole 6. Winding 3
Although not shown, the terminal is entangled with the lead terminal 8 planted on the lower surface of the base 2 and soldered.
【０００９】前記壁面は、巻線３に流れる電流によるド
ラム型磁性コア４内の磁束の方向に平行であるので、磁
性コア４の磁歪現象による振動の貫通孔６壁面方向の分
力がなく、振動エネルギは軟質接着剤７に吸収されるの
で、基台２に振動が伝わらない。Since the wall surface is parallel to the direction of the magnetic flux in the drum-shaped magnetic core 4 due to the current flowing through the winding 3, there is no component force in the direction of the wall surface of the through hole 6 due to the magnetostriction phenomenon of the magnetic core 4. Since the vibration energy is absorbed by the soft adhesive 7, the vibration is not transmitted to the base 2.
【００１０】このリニアリティコイルは、次のように製
造した。リード端子８を上にして基台２をテフロン（商
標名）シート等の離型性の良いシート上に載置した後、
磁石５を基台２の貫通孔６内に配置し、磁石５の周面と
貫通孔６の壁面との間隙に軟質接着剤７を注入し、その
ままの状態で軟質樹脂７を８０℃、２時間硬化させた。
その後、磁石５を固着した基台２をリード端子８を下側
にし、磁石５の上にドラム型磁性コア４をショア硬度Ｄ
９０の硬質エポキシ樹脂接着剤で固着し、この磁性コア
４に０．６ｍｍφのウレタン樹脂被覆導線を５０回巻回
し、その端末をリード端子８に絡げて半田付けした。こ
の製造方法によれば、軟質接着剤７の前記間隙への注入
による磁石５の固定が容易で、リニアリティコイルの製
造が容易である。This linearity coil was manufactured as follows. After placing the base 2 with the lead terminals 8 on top on a sheet having good releasability such as a Teflon (trademark) sheet,
The magnet 5 is arranged in the through hole 6 of the base 2, the soft adhesive 7 is injected into the gap between the peripheral surface of the magnet 5 and the wall surface of the through hole 6, and the soft resin 7 is kept at 80 ° C. Allowed to cure for hours.
After that, the base 2 to which the magnet 5 is fixed is set so that the lead terminal 8 is on the lower side, and the drum-shaped magnetic core 4 is placed on the magnet 5 in Shore hardness D
It was fixed with 90 hard epoxy resin adhesives, and a 0.6 mmφ urethane resin coated conductive wire was wound around the magnetic core 4 50 times, and its end was entwined with the lead terminal 8 and soldered. According to this manufacturing method, the magnet 5 is easily fixed by injecting the soft adhesive 7 into the gap, and the linearity coil is easily manufactured.
【００１１】このリニアリティコイルを測定用基板に搭
載した後、周波数１５．７５ＫＨｚの三角波を発生する
電源に接続し、電流６Ａ（ｐーｐ）の電流を巻線に流し
たとき、リニアリティコイルから１５ｍｍ離れたマイク
ロホンで音圧を測定した結果、ー８０ｄＢであった。After mounting this linearity coil on a measuring board, it was connected to a power source for generating a triangular wave having a frequency of 15.75 KHz, and when a current of 6 A (pp) was passed through the winding, 15 mm from the linearity coil. As a result of measuring the sound pressure with a microphone away from the microphone, the sound pressure was -80 dB.
【００１２】比較例 貫通孔の無い基台を用い、これにショア硬度Ｄ９０の硬
質エポキシ樹脂接着剤により磁石を固着し、上記実施例
と同様のコイル本体を用いた。電流６Ａ（ｐーｐ）の電
流を巻線に流したとき、リニアリティコイルから１５ｍ
ｍ離れたマイクロホンでうなり音の音圧を測定した結
果、ー６５ｄＢであった。この実施例は、比較例との対
比から明らかなように、うなり音の音圧が約１５ｄＢ減
少した。Comparative Example A base having no through holes was used, and a magnet was fixed to the base with a hard epoxy resin adhesive having a Shore hardness of D90, and the same coil body as that of the above embodiment was used. When a current of 6 A (pp) is applied to the winding, 15 m from the linearity coil
It was -65 dB as a result of measuring the sound pressure of the howling sound with a microphone located at a distance of m. In this example, as apparent from comparison with the comparative example, the sound pressure of the beat noise was reduced by about 15 dB.
【００１３】軟質接着剤７として、ショア硬度Ａ６８の
ものを用いたが、ショア硬度Ａ２０から９０までの硬度
のものを用いることができ、この範囲の軟質接着剤７を
用いることにより比較例と較べて１９ｄＢまで音圧を減
少することができた。As the soft adhesive 7, a shore hardness of A68 was used, but a shore hardness of A20 to 90 can be used. By using the soft adhesive 7 in this range, comparison with the comparative example can be made. The sound pressure could be reduced to 19 dB.
【００１４】基台２の貫通孔６は、図２に示すように、
磁石５の径より大きく且つその厚さより僅かに長い深さ
の孔部６1 と磁石５の径より僅かに小さな孔部６2 とか
ら成るものでも良く、この貫通孔６を有する基台２を用
いたときは、孔部６1 に挿入されその壁面に軟質接着剤
７により接着固定された磁石５は、使用環境によって樹
脂が老化し接着能力が低下した場合でも基台２から落下
することがなく、軟質接着剤７も落下しない。The through hole 6 of the base 2 is, as shown in FIG.
It may be composed of a hole portion 6 1 having a depth larger than the diameter of the magnet 5 and slightly longer than its thickness and a hole portion 6 2 slightly smaller than the diameter of the magnet 5, and the base 2 having this through hole 6 When used, the magnet 5 inserted into the hole 6 1 and adhered and fixed to the wall surface of the magnet 5 by the soft adhesive 7 may drop from the base 2 even when the resin is aged due to the use environment and the adhesive ability is deteriorated. Neither does the soft adhesive 7 fall.
【００１５】又、図３に示すように、図２と同様の基台
２の貫通孔６に周面にテーパの付いた磁石５を挿入し、
軟質接着剤７で貫通孔６の孔部６1 に接着固定しても良
い。この例では、前記実施例と同じように軟質接着剤７
を間隙に注入しやすいと共に使用環境によって該接着剤
７が老化し接着能力が低下した場合でも、該接着剤７が
落下しないと共にテーパ面によって磁石５が基台２から
脱落することがない。なお、磁石５はテーパ面であるの
で、貫通孔６の壁面に垂直な分力ができるが、その分力
は僅かであるので、その分力による振動は、軟質接着剤
７により吸収されて基台２には伝わらない。Further, as shown in FIG. 3, the magnet 5 having a tapered peripheral surface is inserted into the through hole 6 of the base 2 similar to that shown in FIG.
The soft adhesive 7 may be bonded and fixed to the hole portion 6 1 of the through hole 6. In this example, the soft adhesive 7 is used in the same manner as in the above example.
Is easily injected into the gap, and even if the adhesive 7 is aged and its adhesive ability is deteriorated depending on the use environment, the adhesive 7 does not drop and the magnet 5 does not fall off the base 2 due to the tapered surface. Since the magnet 5 is a tapered surface, a component force perpendicular to the wall surface of the through hole 6 can be generated. However, since the component force is small, the vibration due to the component force is absorbed by the soft adhesive 7 It does not reach the platform 2.
【００１６】更に、図４または図５に示すように、磁石
５の周面の上端部に段差９を設けるかまたは中間部に突
起１０を設けても図３の例と同様の効果を奏する。Further, as shown in FIG. 4 or FIG. 5, even if the step 9 is provided at the upper end portion of the peripheral surface of the magnet 5 or the protrusion 10 is provided at the intermediate portion, the same effect as the example of FIG. 3 is obtained.
【００１７】なお、図示しなかったが、上記いずれの実
施例においても、従来例と同じように、コイル本体１の
外周を樹脂から成る外装体で被覆することができる。Although not shown, in any of the above-described embodiments, the outer circumference of the coil body 1 can be covered with an outer casing made of resin, as in the conventional example.
【００１８】[0018]
【発明の効果】本発明は、上述のような構成を有するの
で、従来のものに較べて聴感上不快なうなり音を抑制す
ることができるという効果を有する。Since the present invention has the above-mentioned structure, it has the effect of suppressing the growling noise which is unpleasant to the listener as compared with the conventional one.
【図１】 （Ａ）及び（Ｂ）は本発明の一実施例の一部
截断正面図及び分解斜視図。1A and 1B are a partially cutaway front view and an exploded perspective view of an embodiment of the present invention.
【図２】 上記実施例の第１変形例の要部を示す断面
図。FIG. 2 is a cross-sectional view showing the main parts of a first modified example of the above embodiment.
【図３】 上記実施例の第２変形例の要部を示す断面
図。FIG. 3 is a sectional view showing an essential part of a second modification of the above embodiment.
【図４】 上記実施例の第３変形例の要部を示す断面
図。FIG. 4 is a sectional view showing an essential part of a third modification of the above embodiment.
【図５】 上記実施例の第４変形例の要部を示す断面
図。FIG. 5 is a cross-sectional view showing the main parts of a fourth modification of the above embodiment.
【図６】 従来のリニアリティコイルの一部截断正面図FIG. 6 is a partially cutaway front view of a conventional linearity coil.
１ コイル本体 ２ 基台 ３ 巻線 ４ ドラム型磁性コア ５ 磁石 ６ 貫通孔 ７ 軟質接着剤 1 Coil Main Body 2 Base 3 Winding 4 Drum Type Magnetic Core 5 Magnet 6 Through Hole 7 Soft Adhesive
Claims (1)
の鍔に磁石を固着したコイル本体と該コイル本体を支持
する基台とから成るリニアリティコイルにおいて、該基
台に貫通孔が形成され、巻線に流れる電流による前記磁
性コア内の磁束の方向に平行な貫通孔の壁面に前記磁石
を軟質接着剤により接着固定したことを特徴とするリニ
アリティコイル。1. A linearity coil comprising a coil body in which a magnet is fixed to one flange of a drum-shaped magnetic core around which a winding is wound and a base supporting the coil body, and a through hole is formed in the base. The linearity coil is characterized in that the magnet is adhered and fixed to the wall surface of the through hole parallel to the direction of the magnetic flux in the magnetic core by the current flowing through the winding with a soft adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29664994A JPH08153625A (en) | 1994-11-30 | 1994-11-30 | Linearity coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29664994A JPH08153625A (en) | 1994-11-30 | 1994-11-30 | Linearity coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08153625A true JPH08153625A (en) | 1996-06-11 |
Family
ID=17836280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29664994A Pending JPH08153625A (en) | 1994-11-30 | 1994-11-30 | Linearity coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08153625A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015050391A (en) * | 2013-09-03 | 2015-03-16 | パナソニックＩｐマネジメント株式会社 | Lighting device, lamp fitting and vehicle |
-
1994
- 1994-11-30 JP JP29664994A patent/JPH08153625A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015050391A (en) * | 2013-09-03 | 2015-03-16 | パナソニックＩｐマネジメント株式会社 | Lighting device, lamp fitting and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020409 |