JPS645844Y2 - - Google Patents

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Publication number
JPS645844Y2
JPS645844Y2 JP20480U JP20480U JPS645844Y2 JP S645844 Y2 JPS645844 Y2 JP S645844Y2 JP 20480 U JP20480 U JP 20480U JP 20480 U JP20480 U JP 20480U JP S645844 Y2 JPS645844 Y2 JP S645844Y2
Authority
JP
Japan
Prior art keywords
resin
case
recess
resistor
board
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
Application number
JP20480U
Other languages
Japanese (ja)
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JPS56104107U (en
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
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Priority to JP20480U priority Critical patent/JPS645844Y2/ja
Publication of JPS56104107U publication Critical patent/JPS56104107U/ja
Application granted granted Critical
Publication of JPS645844Y2 publication Critical patent/JPS645844Y2/ja
Expired legal-status Critical Current

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  • Adjustable Resistors (AREA)

Description

【考案の詳細な説明】 本考案は、テレビジヨン受像機などのブラウン
管のフオーカス電圧を取出すためにフライバツク
トランスに組込まれる樹脂封止型のフオーカス電
圧調整用可変抵抗器に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a resin-sealed focus voltage adjusting variable resistor that is incorporated into a flyback transformer for extracting the focus voltage of a cathode ray tube such as a television receiver.

テレビジヨン受像機など高電圧を使用する機器
においては、高電圧による危険防止やコロナ放電
による部品の劣化防止などのため、高電圧部分を
パツケージ化して樹脂封止することが多い。
In equipment that uses high voltage, such as television receivers, high voltage parts are often packaged and sealed with resin to prevent danger from high voltage and to prevent parts from deteriorating due to corona discharge.

例えばフライバツクトランスなどにおいては、
それと、それに接続されて高電圧が掛る各種の部
品などを一体のケースに封止することがしばしば
行なわれている。
For example, in flyback transformers,
This and various parts connected to it to which high voltage is applied are often sealed in a single case.

そして、そのような部品の一例としてブラウン
管のフオーカス電圧を調整するための可変抵抗器
がある。即ち、この可変抵抗器は、フライバツク
トランスの高圧コイルの途中からフオーカス電圧
よりわずかに高い所定の電圧、いわゆる中電圧を
取り出し、それを分割してフオーカス電圧を調整
するためのものであり、通常、数kVの電圧が加
えられているから、フライバツクトランスと一体
に封止した方が好ましいものだからである。
An example of such a component is a variable resistor for adjusting the focus voltage of a cathode ray tube. In other words, this variable resistor extracts a predetermined voltage slightly higher than the focus voltage from the middle of the high-voltage coil of the flyback transformer, so-called medium voltage, and divides it to adjust the focus voltage. , since a voltage of several kV is applied to it, it is preferable to seal it together with the flyback transformer.

そこで、このフオーカス電圧調整用の可変抵抗
器は、樹脂封止に適した構造のものでなければな
らないから、例えば第1図に示すような構造のも
のが多く使用されている。
Therefore, since the variable resistor for adjusting the focus voltage must have a structure suitable for resin sealing, a structure as shown in FIG. 1, for example, is often used.

第1図において、1は厚膜抵抗基板、2はケー
ス、3は回動部材、4は封止用樹脂、5は基板1
に形成された抵抗体、6は回動部材3に取付けら
れている摺動接触子、7は回動部材3を回動自在
に保持している保持部、8はケースに設けられて
いるガイドピン、9はケース2に基板1を取付け
るための基板座部、10は回動部材3の調整軸、
11はケース2の中に侵入した漏入樹脂である。
In FIG. 1, 1 is a thick film resistance board, 2 is a case, 3 is a rotating member, 4 is a sealing resin, and 5 is a substrate 1.
6 is a sliding contact attached to the rotating member 3, 7 is a holding portion that rotatably holds the rotating member 3, and 8 is a guide provided in the case. A pin, 9 is a board seat for attaching the board 1 to the case 2, 10 is an adjustment shaft of the rotating member 3,
Reference numeral 11 indicates leaked resin that has entered the case 2.

この可変抵抗器は、次のようにして組立られ
る。
This variable resistor is assembled as follows.

まず、ケース2の保持部7に回動部材3の調整
軸10を挿入し、ついで摺動接触子6の弾性に抗
しながら基板1をケース2の基板座部9に挿入
し、所定位置にセツトする。このとき、ケース2
のガイドピン8が基板1に設けられた孔に対して
ガイドの役をし、正確な位置に容易にセツトでき
るようになつている。即ち基板1に設けられた孔
をガイドピン8に嵌合させ、例えばガイドピン8
に熱を加えて仮止めする。最後に封止用の適当な
樹脂、例えばエポキシ樹脂4を基板1の外側及び
その周辺部にケース2を満すようにして注入し、
硬化させて組立を終了する。
First, the adjustment shaft 10 of the rotating member 3 is inserted into the holding part 7 of the case 2, and then the board 1 is inserted into the board seat part 9 of the case 2 while resisting the elasticity of the sliding contact 6, and the board 1 is placed in a predetermined position. Set. At this time, case 2
A guide pin 8 serves as a guide for the hole provided in the substrate 1, so that it can be easily set at an accurate position. That is, by fitting the guide pin 8 into a hole provided in the substrate 1, for example, the guide pin 8 is inserted into the guide pin 8.
Apply heat to temporarily fix. Finally, a suitable resin for sealing, such as epoxy resin 4, is injected onto the outside of the substrate 1 and its surroundings so as to fill the case 2.
Let it harden and complete the assembly.

この第1図に示した可変抵抗器は、フライバツ
クトランスのパツケージ内に収められ、そのパツ
ケージに設けられている孔からケース2の一部と
調整軸10が外部に露出するようにして取付けら
れた上、フライバツクトランスなどと一体に樹脂
などを注入されて封止される。そして、調整軸1
1を回動することによりフオーカス電圧の調整を
行なうことができる。
The variable resistor shown in FIG. 1 is housed in a flyback transformer package, and is installed so that a part of the case 2 and the adjustment shaft 10 are exposed to the outside through a hole provided in the package. In addition, a resin or the like is injected into the flyback transformer and the like to seal it. And adjustment axis 1
By rotating 1, the focus voltage can be adjusted.

ところで、このような可変抵抗器においては、
基板1の孔をケース2のガイドピン8に嵌合させ
て仮止めした際、基板1とケース2の基板座部9
との間に間隙を生じやすく、ここに隙き間が存在
していると封止用の樹脂4の注入したときケース
2の中に封止用の樹脂4の一部が侵入してしま
う。
By the way, in such a variable resistor,
When the hole of the board 1 is fitted into the guide pin 8 of the case 2 and temporarily fixed, the board seats 9 of the board 1 and the case 2
If there is a gap, a part of the sealing resin 4 will enter the case 2 when the sealing resin 4 is injected.

このようにして侵入した樹脂11は、基板1の
抵抗体5が形成してある面に沿つて流れ、抵抗体
5に達して抵抗体5と摺動接触子6との接触状態
を悪化させて接触不良の原因となつたり、回動部
材3と保持部7との部分に達してこれら両者を固
着させ、回動部材3を回動できなくしてしまつた
りすることが多かつた。
The resin 11 that has entered in this way flows along the surface of the substrate 1 where the resistor 5 is formed, reaches the resistor 5, and deteriorates the contact state between the resistor 5 and the sliding contact 6. This often causes poor contact, or reaches the portion between the rotating member 3 and the holding portion 7, causing them to stick together, making it impossible for the rotating member 3 to rotate.

そのため、基板1とケース2の基板座部9の仕
上げを精密にした上で仮止め作業を熟練した作業
員によつて適確に行なうようにしなければなら
ず、それでも歩止りを充分改善するには到らない
ため、コストアツプが著しいという欠点があつ
た。
Therefore, it is necessary to precisely finish the substrate 1 and the substrate seat 9 of the case 2, and to perform the temporary fixing work accurately by skilled workers. However, this method had the drawback of significantly increasing costs.

本考案の目的は、上記した従来技術の欠点を除
き、基板やケースの仕上げがそれ程精密なもので
なくしかも組立時の仮止め作業がそれ程適確なも
のでなくても歩止りの低下が生じないようにした
樹脂封止型のフオーカス調整用可変抵抗器を提供
するにある。この目的を達成するため、本考案
は、ケース部材に植設されたガイドピンに基板に
穿設された孔を嵌合させて仮止めし、ケース部材
の該仮止めされた抵抗基板によつて覆われた部分
に封止用樹脂が注入されてなるフオーカス電圧調
整用樹脂封止型可変抵抗器であつて、たとえケー
ス内に封止用の樹脂が漏入しても基板面の抵抗体
や回動部材の保持部には達しないように構成した
点を特徴とする。
The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to eliminate the drawbacks of the above-mentioned prior art. To provide a resin-sealed variable resistor for focus adjustment in which the focus adjustment does not occur. In order to achieve this purpose, the present invention temporarily fixes the board by fitting the guide pin implanted in the case member into the hole drilled in the board, and the temporarily fixed resistance board of the case member This is a resin-sealed variable resistor for focus voltage adjustment in which a sealing resin is injected into the covered part. Even if the sealing resin leaks into the case, it will not damage the resistor on the board surface or It is characterized in that it is configured so that it does not reach the holding portion of the rotating member.

以下、本考案によるフオーカス調整用樹脂封止
型可変抵抗器の実施例を図面について説明する。
Embodiments of the resin-sealed variable resistor for focus adjustment according to the present invention will be described below with reference to the drawings.

第2図は本考案の一実施例で、厚膜抵抗体基板
1、ケース2、回動部材3、封止用樹脂4、抵抗
体5、摺動接触子6、保持部7、ガイドピン8、
基板座部9、調整軸10、漏入樹脂11などは第
1図の従来例と同じである。
FIG. 2 shows an embodiment of the present invention, including a thick film resistor substrate 1, a case 2, a rotating member 3, a sealing resin 4, a resistor 5, a sliding contact 6, a holding part 7, and a guide pin 8. ,
The substrate seat 9, adjustment shaft 10, leaked resin 11, etc. are the same as in the conventional example shown in FIG.

12はケース2の基板座部9の内側周辺部に形
成された面取り部、13は回動部材3を保持した
保持部7の周囲を囲むようにしてケース2の内部
に設けられたリング状の凸起部である。
Reference numeral 12 denotes a chamfered portion formed on the inner periphery of the substrate seat portion 9 of the case 2, and reference numeral 13 denotes a ring-shaped protrusion provided inside the case 2 so as to surround the periphery of the holding portion 7 that holds the rotating member 3. Department.

この第2図に示した本考案の実施例において
も、まず、ケース2の保持部7に回動部材3の調
整軸10を挿入し、ついで基板1の孔をガイドピ
ン8に嵌合させて所定の位置にセツトすると共に
熱かしめ等で仮止め後、封止用の樹脂4を注入す
れば組立が完了する。
Also in the embodiment of the present invention shown in FIG. After setting it in a predetermined position and temporarily fixing it by heat caulking or the like, the assembly is completed by injecting the sealing resin 4.

ところで、本考案の実施例においては、基板1
がケース2の基板座部9に接する部分、及び基板
座部9の周辺部の仕上状態がそれ程良好でなく、
かつ基板1の基板座部9に対する仮止め状態もそ
れ程適確でなくて封止用の樹脂4がケース2の内
部に侵入して漏入樹脂11となつた場合でも、特
に大きな問題は生じない。
By the way, in the embodiment of the present invention, the substrate 1
The finishing condition of the part of the case 2 in contact with the board seat 9 and the peripheral part of the board seat 9 is not so good,
In addition, even if the temporary fixing of the board 1 to the board seat 9 is not so accurate and the sealing resin 4 enters the inside of the case 2 and becomes leaked resin 11, no major problem will occur. .

即ち、漏入樹脂11を生じてもケース2の基板
座部9の内周辺部には面取り部12が形成されて
いるため、封止用の樹脂4を注入したとき、この
基板座部9と基板1の隙き間から樹脂が侵入した
としても、その樹脂は面取り部12に導かれ、ケ
ース2の内面に沿つて下方に進むので、基板1の
内面を伝つて抵抗体5に達するようなことは起こ
らなくなつている。
That is, even if leakage resin 11 occurs, since the chamfered portion 12 is formed on the inner periphery of the board seat 9 of the case 2, when the sealing resin 4 is injected, the board seat 9 and Even if the resin enters through the gap in the board 1, the resin will be guided to the chamfer 12 and proceed downward along the inner surface of the case 2, so that it will not reach the resistor 5 along the inner surface of the board 1. Things are starting to stop happening.

また、ケース2の内面に沿つて漏入樹脂11と
なつても、回動部材3の保持部7に近い部分はリ
ング状の凸起部13で囲まれているから、漏入樹
脂11はこのリング状の凸起部13で堰止められ
てしまつて回動部材3及び保持部7にまでは到達
しない。
Furthermore, even if the leaked resin 11 forms along the inner surface of the case 2, since the portion of the rotating member 3 close to the holding portion 7 is surrounded by the ring-shaped protrusion 13, the leaked resin 11 will be removed. It is blocked by the ring-shaped convex part 13 and does not reach the rotating member 3 and the holding part 7.

そのため、抵抗体5に漏入樹脂11が達して接
触不良を起こしたり、回動部材3がケース2に固
着して回動不能になつたりすることはほとんどな
くなるので、たとえ仕上状態や仮止め状態が悪く
て漏入樹脂11を生じても、ほとんど問題とはな
らないのである。
Therefore, it is almost impossible for the leaked resin 11 to reach the resistor 5 and cause poor contact, or for the rotating member 3 to stick to the case 2 and become unable to rotate. Even if leakage resin 11 occurs due to poor performance, it is hardly a problem.

従つて、この実施例によれば、封止用の樹脂4
がケース2の中に侵入して漏入樹脂11となつて
も、可変抵抗器としての機能には全く影響を与え
ないから、不良品となることを防止することがで
きる。
Therefore, according to this embodiment, the sealing resin 4
Even if the resin enters the case 2 and becomes the leaked resin 11, it does not affect the function of the variable resistor at all, so it is possible to prevent the product from becoming a defective product.

以上説明したように、本考案によれば、基板の
ケース部材への仮止めが十分でなくても製品の歩
留りを悪化させてコストアツプをもたらすことが
なくなるから、従来技術の欠点を除いてローコス
トでしかも動作が確実なフオーカス調整用樹脂封
止型可変抵抗器を得ることができる効果を奏す
る。
As explained above, according to the present invention, even if the temporary fixing of the board to the case member is not sufficient, it will not deteriorate the product yield and cause an increase in cost. Moreover, it is possible to obtain a resin-sealed variable resistor for focus adjustment that is reliable in operation.

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

第1図はフオーカス調整用樹脂封止型可変抵抗
器の従来例を示す断面図、第2図本考案の一実施
例を示す断面図である。 1……厚膜抵抗基板、2……ケース、3……回
動部材、4……封止用樹脂、5……抵抗体、6…
…摺動接触子、7……保持部、8……ガイドピ
ン、9……基板座部、10……調整軸、11……
漏入樹脂、12……面取り部、13……リング状
の凸起部。
FIG. 1 is a sectional view showing a conventional example of a resin-sealed variable resistor for focus adjustment, and FIG. 2 is a sectional view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Thick film resistance board, 2... Case, 3... Rotating member, 4... Sealing resin, 5... Resistor, 6...
...Sliding contact, 7... Holding part, 8... Guide pin, 9... Board seat, 10... Adjustment shaft, 11...
Leakage resin, 12... Chamfered portion, 13... Ring-shaped protrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 調整軸と摺動接触子を有する回動部材と、該回
動部材を収容しかつそれを回動自在に保持する保
持部を設けた凹部を有するケース部材と、一方の
面に抵抗体を有し該抵抗体が前記回動部材の摺動
接触子によつて摺動可能な状態で前記ケース部材
の凹部を覆うようにして前記ケース部材の凹部を
形成する内壁面に連なる座部に仮止めされる抵抗
基板とからなり、内壁面と座部との結合部は、外
部から注入される封止用樹脂が凹部内壁面にそつ
て落下可能となるように面取りされ、凹部底部に
は前記保持部の周囲を囲うように、かつ前記回動
部材に接触しないようにして前記ケース部材の凹
部内に形成した封止用樹脂流入防止用のリング状
凸起部が設けられ、ケース部材の凹部内に漏入し
た封止用樹脂が前記保持部に達しないように構成
したことを特徴とするフオーカス電圧調整用樹脂
封止型可変抵抗器。
A case member having a rotary member having an adjustment shaft and a sliding contact, a recessed portion provided with a holding portion that accommodates the rotary member and rotatably holds it, and a resistor on one surface. The resistor is slidable by a sliding contact of the rotary member and is temporarily fixed to a seat part connected to an inner wall surface forming the recess of the case member so as to cover the recess of the case member. The joint between the inner wall surface and the seat is chamfered so that the sealing resin injected from the outside can fall along the inner wall surface of the recess. A ring-shaped protrusion for preventing the sealing resin from flowing into the recess of the case member is formed in the recess of the case member so as to surround the periphery of the rotating member and not contact the rotating member. 1. A resin-sealed variable resistor for adjusting focus voltage, characterized in that the resin-sealed variable resistor is configured such that sealing resin leaked into the holding portion does not reach the holding portion.
JP20480U 1980-01-08 1980-01-08 Expired JPS645844Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20480U JPS645844Y2 (en) 1980-01-08 1980-01-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20480U JPS645844Y2 (en) 1980-01-08 1980-01-08

Publications (2)

Publication Number Publication Date
JPS56104107U JPS56104107U (en) 1981-08-14
JPS645844Y2 true JPS645844Y2 (en) 1989-02-14

Family

ID=29597058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20480U Expired JPS645844Y2 (en) 1980-01-08 1980-01-08

Country Status (1)

Country Link
JP (1) JPS645844Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2550774B2 (en) * 1990-11-06 1996-11-06 株式会社村田製作所 Variable resistor for high voltage
JP2567096Y2 (en) * 1990-11-19 1998-03-30 富山日本電気株式会社 Sealed variable resistor

Also Published As

Publication number Publication date
JPS56104107U (en) 1981-08-14

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