JPH03204902A - Variable resistor - Google Patents
Variable resistorInfo
- Publication number
- JPH03204902A JPH03204902A JP28245490A JP28245490A JPH03204902A JP H03204902 A JPH03204902 A JP H03204902A JP 28245490 A JP28245490 A JP 28245490A JP 28245490 A JP28245490 A JP 28245490A JP H03204902 A JPH03204902 A JP H03204902A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- pattern
- edge
- resin
- resistor
- 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.)
- Granted
Links
- 229920005989 resin Polymers 0.000 claims abstract description 43
- 239000011347 resin Substances 0.000 claims abstract description 43
- 239000000758 substrate Substances 0.000 claims description 46
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- 239000011195 cermet Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 7
- 238000005476 soldering Methods 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 241000251730 Chondrichthyes Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Adjustable Resistors (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、主として半固定型といわれる可変抵抗器に関
する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention mainly relates to a variable resistor called a semi-fixed type.
〈従来の技術〉
従来から、この種の可変抵抗器としては、例えば、第４
図で示すように、略矩形平板状に形成されたアルミナな
どからなるセラミック抵抗基Ｆｉ１０と、これに取り付
けられた一対の電極端子１１とを備えたものが知られて
いる。そして、このセラミック抵抗基板１０の表面上に
は、例えば、サメ、トからなる略円弧状の抵抗パターン
１２が形成されており、その一端部には抵抗パターン１
２の並列配置された端縁部のそれぞれに接続された一対
の引出電極パターン１３が銀ベーストなどの焼き付けに
よって形成されている。また、セラミンク抵抗基板ＩＯ
の引出電極パターン１３と対応する位置それぞれには端
子取付孔（図示していない）が形成されており、これら
の端子取付孔を挿通してセラミック抵抗基板１０の表面
側にまで突出した電極端子１１の端縁部１１ａはセラミ
ック抵抗基板１０の表面に沿って屈曲されたうえでかし
め付けられている。さらに、これらの電極端子１１の端
縁部１１ａ及び引出電極パターン１３のそれぞれは互い
に半田１４によって接続されている。なお、このセラミ
ック抵抗基板１０にはコレクタ電極端子や摺動子も取り
付けられるが、これらについては図示していない。<Prior art> Conventionally, as this type of variable resistor, for example, a fourth variable resistor has been used.
As shown in the figure, one is known that includes a ceramic resistance base Fi10 made of alumina or the like and formed into a substantially rectangular flat plate shape, and a pair of electrode terminals 11 attached to the ceramic resistance base Fi10. On the surface of this ceramic resistance substrate 10, a substantially circular arc-shaped resistance pattern 12 made of, for example, a shark and a groove is formed, and a resistance pattern 1 is formed at one end of the resistance pattern 12.
A pair of lead-out electrode patterns 13 connected to each of the two end edges arranged in parallel are formed by baking a silver base or the like. In addition, ceramic resistance board IO
Terminal mounting holes (not shown) are formed at positions corresponding to the lead-out electrode patterns 13, and the electrode terminals 11 are inserted through these terminal mounting holes and protrude to the surface side of the ceramic resistance substrate 10. The edge portion 11a is bent along the surface of the ceramic resistance substrate 10 and then caulked. Furthermore, the edge portions 11a of these electrode terminals 11 and the extraction electrode patterns 13 are connected to each other by solder 14. Note that collector electrode terminals and sliders are also attached to this ceramic resistance substrate 10, but these are not shown.
さらにまた、他の従来例に係る可変抵抗器として、第５
図で示すように、一対の電極端子２０及びコレクタ電極
端子２１がそれぞれ埋設された樹脂抵抗基板２２を備え
たものがあり、この樹脂抵抗基板２２の表面上には略円
弧状の抵抗パターン２３が形成されている。そして、こ
の抵抗パターン２３は、例えば、カーボンを用いること
によって形成されており、その端縁部２３ａは樹脂抵抗
基板２２の表面に露出した電極端子２０の端縁部２０ａ
とそれぞれ接続されている。また、コレクタ電極端子２
１は樹脂抵抗基板２２の略中央位置に形成された孔２２
ａ内に露出したコレクタ電極部分２１ａを有しており、
このコレクタ電極部分２１ａには摺動子（図示していな
い）が取り付けられるようになっている。Furthermore, as a variable resistor according to another conventional example, the fifth
As shown in the figure, there is one equipped with a resin resistance board 22 in which a pair of electrode terminals 20 and a collector electrode terminal 21 are respectively embedded, and a substantially arc-shaped resistance pattern 23 is formed on the surface of this resin resistance board 22. It is formed. This resistance pattern 23 is formed by using carbon, for example, and its edge portion 23a is the edge portion 20a of the electrode terminal 20 exposed on the surface of the resin resistance substrate 22.
are connected to each other. In addition, collector electrode terminal 2
1 is a hole 22 formed approximately at the center of the resin resistance board 22.
It has a collector electrode portion 21a exposed inside a,
A slider (not shown) is attached to this collector electrode portion 21a.
〈発明が解決しようとする課題〉
ところで、前述した従来構成の可変抵抗器のそれぞれに
は、つぎのような不都合があった。<Problems to be Solved by the Invention> By the way, each of the conventional variable resistors described above has the following disadvantages.
まず、第４図で示した可変抵抗器においては、セラミッ
ク抵抗基ＦｉｌＯ上の引出電極パターン１３と電極端子
１１の端縁部１１ａとを半田付けによって接続すること
から、引出電極パターン１３の形成材料として高価な銀
ペーストを用いなければならず、材料コストが高くなっ
てしまう。また、電極端子１１をセラミック抵抗基板１
０の端子取付孔に挿通する際や電極端子１１の端縁部１
１ａをセラミック抵抗基板１０の表面に沿ってかしめ付
ける際に、このセラミック抵抗基板１０が割れてしまう
ことがあるため、最終的な製品歩留りが悪化してしまう
。さらに、銀ペーストをセラミック抵抗基板１０に焼き
付けて引出電極パターン１３を形成する工程、電極端子
１１をセラミック抵抗基板１０にかしめ付ける工程、電
極端子１１の端縁部１１ａを引出電極パターン１３に半
田付けする工程、半田付は後にフラックスを洗浄する工
程などが必要となるため、その結果として製造工程が煩
雑となり、しかも、製造コストが高くなってしまうとい
う問題があった。First, in the variable resistor shown in FIG. 4, since the lead electrode pattern 13 on the ceramic resistance base FILO and the edge part 11a of the electrode terminal 11 are connected by soldering, the material for forming the lead electrode pattern 13 is As a result, expensive silver paste must be used, resulting in high material costs. In addition, the electrode terminal 11 is connected to the ceramic resistance substrate 1.
When inserting the terminal into the terminal mounting hole 0 or the end edge 1 of the electrode terminal 11.
When caulking 1a along the surface of the ceramic resistance substrate 10, the ceramic resistance substrate 10 may break, resulting in a deterioration of the final product yield. Further, a step of baking silver paste onto the ceramic resistance board 10 to form the lead electrode pattern 13, a step of caulking the electrode terminal 11 to the ceramic resistance board 10, and a step of soldering the edge portion 11a of the electrode terminal 11 to the lead electrode pattern 13 are performed. Since soldering requires a process of cleaning the flux after soldering, the manufacturing process becomes complicated and the manufacturing cost increases.
一方、第５図で示した可変抵抗器では、樹脂抵抗基板２
２を用いることから、その表面上に形成される抵抗パタ
ーン２３の形成材料としては焼き付は温度の低いカーボ
ンを用いる必要がある。なお、−船釣には、サーメット
を形成材料とした方がカーボンを用いる場合よりも高精
度のパターンを形成でき、かつ、抵抗値変化の小さい高
特性を得られるのであるが、カーボンの焼き付は温度が
約１５０〜２００℃であるのに対してサーメットの焼き
付は温度が約７５０〜８５０℃と高いため、このす−ノ
ットを用いることによって樹脂抵抗基板２２の表面上に
抵抗パターン２３を形成することはできない。すなわち
、樹脂抵抗基板２２を高温にさらすと樹脂が溶融するこ
とになるので、焼き付は温度の高いサーメットを用いて
抵抗パターン２３を形成することはできず、結果として
精度の高い可変抵抗器を実現することはできないのが現
状であった。On the other hand, in the variable resistor shown in FIG.
2, it is necessary to use carbon, which has a low baking temperature, as the material for forming the resistance pattern 23 formed on its surface. For boat fishing, it is better to use cermet as a forming material than when carbon is used, and it is possible to form a pattern with higher precision and to obtain high characteristics with less resistance change. The temperature is about 150 to 200 degrees Celsius, while the temperature for baking cermet is as high as about 750 to 850 degrees Celsius. Therefore, by using this knot, the resistance pattern 23 is formed on the surface of the resin resistance board 22. cannot be formed. In other words, if the resin resistance board 22 is exposed to high temperatures, the resin will melt, so the resistance pattern 23 cannot be formed using cermet at a high temperature due to baking, and as a result, it is difficult to form a highly accurate variable resistor. The current situation was that this could not be achieved.
本発明はかかる従来の不都合に鑑みて創案されたもので
あって、高価な銀ペーストを用いて引出電極バクーンを
形成する必要がな（、焼き付は温度の高い形成材料を用
いて抵抗パターンを形成し、かつ、抵抗値変化の小さい
高特性を得ることができ、しかも、その製造工程の簡略
化によって材料及び製造コストの低減を図ることができ
る高精度かつ高特性の可変抵抗器を提供することを目的
としている。The present invention has been devised in view of such conventional disadvantages, and eliminates the need to form the lead-out electrode Bakun using expensive silver paste. To provide a variable resistor with high precision and high characteristics, which can be formed and obtained high characteristics with small resistance value change, and which can reduce material and manufacturing costs by simplifying the manufacturing process. The purpose is to
〈課題を解決するための手段〉
本発明にかかる可変抵抗器は、このような目的を達成す
るために、抵抗基板と樹脂基板とを備えており、抵抗基
板の表面上には略円弧状の抵抗パターンが形成され、か
つ、その一端部には抵抗パターンの両端から延出された
端縁部が並列配置されるとともに、樹脂基板の上面には
抵抗基板を取り付ける取付部が形成され、かつ、その一
端部には一対の電極端子が埋設されており、樹脂基板の
取付部に取り付けられた抵抗基板の抵抗パターンの端縁
部と、電極端子の端縁部とが電気的に接続されているこ
とを特徴とするものである。<Means for Solving the Problems> In order to achieve the above object, a variable resistor according to the present invention includes a resistance substrate and a resin substrate, and a substantially arc-shaped groove is formed on the surface of the resistance substrate. A resistor pattern is formed, edge portions extending from both ends of the resistor pattern are arranged in parallel at one end thereof, and a mounting portion for attaching the resistor board is formed on the upper surface of the resin substrate, and A pair of electrode terminals is embedded in one end, and the edge of the resistance pattern of the resistance board attached to the mounting part of the resin board and the edge of the electrode terminal are electrically connected. It is characterized by this.
〈作用〉
上記構成の可変抵抗器は、一端部に抵抗パターンの端縁
部が並列配置された抵抗基板と、これを取り付ける取付
部が形成され、かつ、抵抗パターンの端縁部と接続され
る一対の電極端子が取り付けられた樹脂基板とを予め用
意し、この樹脂基板の取付部に抵抗基板を取り付けたう
え、抵抗パターン及び電極端子の端縁部同士を導通接続
すれば製品として完成することになる。そして、このと
き、抵抗パターン及び電極端子の端縁部同士は、導電性
接着剤で被覆することによって接続されていても、抵抗
基板を樹脂基板に圧入することに伴う圧着によって接続
されていてもよく、さらには、両者間に導電性を有する
弾性部材を介装することによって接続されていてもよい
。<Function> The variable resistor having the above configuration has a resistance board on which the edges of the resistance pattern are arranged in parallel at one end, and a mounting portion for attaching this, and is connected to the edge of the resistance pattern. A product can be completed by preparing a resin board with a pair of electrode terminals attached in advance, attaching a resistor board to the attachment part of this resin board, and connecting the resistor pattern and the edges of the electrode terminals electrically. become. At this time, the edges of the resistance pattern and the electrode terminals may be connected by coating with a conductive adhesive or by crimping by press-fitting the resistance board into the resin board. Furthermore, they may be connected by interposing an electrically conductive elastic member between them.
〈実施例〉 以下、本発明の実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.
男ｍ桝
第１図（ａ）は本発明の第１実施例にかかる可変抵抗器
の組立状態を示す斜視図であり、第１図（ｂ）はその要
部を分解して示す斜視図である。FIG. 1(a) is a perspective view showing an assembled state of a variable resistor according to a first embodiment of the present invention, and FIG. 1(b) is an exploded perspective view showing the main parts thereof. be.
この実施例に係る可変抵抗器は、略矩形平板状に形成さ
れたアルミナなどのセラミック材料からなる抵抗基板１
と、ＰＰＳ樹脂のような樹脂材料からなる樹脂基板２と
を備えている。そして、この抵抗基Ｆｉ１の表面上には
カーボンやサーメットなどからなる馬蹄形のような略円
弧状の抵抗パターン３が形成されており、この抵抗パタ
ーン３の端縁部３ａそれぞれは抵抗基板１の一端部まで
引き出されたうえで並列配置されている。また、樹脂基
板２の上面には抵抗基板１を取り付けるための所定深さ
とされた取付部４が形成されており、その一端部（図で
は、左側）２ａには抵抗パターン３と電気的に接続され
る一対の電極端子５がインサートモールドによって埋設
されている。The variable resistor according to this embodiment includes a resistance substrate 1 made of a ceramic material such as alumina and formed into a substantially rectangular flat plate shape.
and a resin substrate 2 made of a resin material such as PPS resin. Then, on the surface of this resistance base Fi1, a substantially arc-shaped resistance pattern 3 like a horseshoe shape made of carbon, cermet, etc. is formed, and each edge portion 3a of this resistance pattern 3 corresponds to one end of the resistance substrate 1. They are pulled out to the top and placed in parallel. Furthermore, a mounting part 4 with a predetermined depth for mounting the resistor board 1 is formed on the upper surface of the resin board 2, and one end (left side in the figure) 2a of the mounting part 4 is electrically connected to the resistor pattern 3. A pair of electrode terminals 5 are buried by insert molding.
そして、これらの電極端子５それぞれの端縁部５ａは樹
脂基板２の一端部２ａの表面に沿って露出させられてお
り、これらの端縁部５ａと抵抗基板１の表面上に形成さ
れた抵抗パターン３の端縁部３ａとは、これらを互いに
被覆して形成されたエポキシ樹脂系導電ベーストなどの
ような接着力の強い導電性接着剤６を介して導通接続さ
れている。なお、図における符号７は抵抗基板１及び樹
脂基板２の略中央位置を共に貫通して形成された貫通孔
であり、この貫通孔７を挿通して抵抗基板１の表面上に
まで突出したコレクタ電極端子のコレクタ電極部分には
摺動子（いずれも図示していない）が取り付けられるこ
とになる。The edge portions 5a of each of these electrode terminals 5 are exposed along the surface of one end portion 2a of the resin substrate 2, and the resistors formed on these edge portions 5a and the surface of the resistor substrate 1 are exposed. The end edges 3a of the pattern 3 are electrically connected to each other through a conductive adhesive 6 having a strong adhesive force, such as an epoxy resin conductive base, which is formed by covering each other. In addition, the reference numeral 7 in the figure is a through hole formed by penetrating both the resistor board 1 and the resin board 2 at substantially central positions, and the collector is inserted through this through hole 7 and protrudes onto the surface of the resistor board 1. A slider (none of which is shown) will be attached to the collector electrode portion of the electrode terminal.
ところで、本実施例においては、抵抗基板１がセラミッ
ク材料からなるものとしているが、必ずしもこれに限定
されるものではない。しかしながら、この抵抗基板ｌが
セラミック材料からなるものである場合には、低温下で
のみ焼き付けうるカーボンはもちろんのこと、高温焼き
付けが必要なサーメットの他、メツキ抵抗などのような
特殊な処理を必要とする抵抗パターン３をも容易に形成
することが可能となるので、ユーザー（需要者）の多様
な要望に応えやすいという実用上の利点が得られる。By the way, in this embodiment, the resistance substrate 1 is made of a ceramic material, but it is not necessarily limited to this. However, when this resistor board l is made of ceramic material, it requires special treatment such as carbon, which can be baked only at low temperatures, cermet, which requires high temperature baking, and plated resistors. Since it becomes possible to easily form the resistor pattern 3, there is a practical advantage that it is easy to meet the various demands of users (consumers).
第１夫差■
第２図（ａ）は本発明の第２実施例にかかる可変抵抗器
の要部の分解状態を示す斜視図であり、第２図（ｂ）は
その組立状態を部分的に示す断面図である。なお、これ
らの図において第１図（ａ） 、 （ｂ）と互いに同一
もしくは相当する部品、部分には同一符号を付している
。Fig. 2(a) is a perspective view showing an exploded state of main parts of a variable resistor according to a second embodiment of the present invention, and Fig. 2(b) is a partially assembled state of the variable resistor. FIG. In these figures, parts and portions that are the same as or correspond to those in FIGS. 1(a) and 1(b) are designated by the same reference numerals.
この実施例にかかる可変抵抗器は、表面上に略円弧状の
抵抗パターン３が形成された抵抗基板１と、これを取り
付ける取付部４が形成された樹脂基板２とを備えている
。そして、この樹脂基板２に形成された取付部４の内面
開路ｊｉｌＬ（但し、この内面開路ＭＬは、後述する取
付部４の内面に沿って露出した電極端子５の端縁部５ａ
の露出側表面から計算するものとする）は抵抗基板１の
両端縁面間距離ｉよりも若干短めに設定されており（１
、＜Ｎ）、この取付部４には抵抗基板１が圧入されるよ
うになっている。The variable resistor according to this embodiment includes a resistance substrate 1 having a substantially arc-shaped resistance pattern 3 formed on its surface, and a resin substrate 2 having a mounting portion 4 for attaching the same. Then, the inner surface open circuit jilL of the mounting portion 4 formed on this resin substrate 2 (however, this inner surface open circuit ML is the edge portion 5a of the electrode terminal 5 exposed along the inner surface of the mounting portion 4, which will be described later).
) is set to be slightly shorter than the distance i between both end surfaces of the resistor board 1 (1
, <N), the resistance board 1 is press-fitted into the mounting portion 4.
また、この抵抗基板１の一端部に並列配置された抵抗パ
ターン３の端縁部３ａそれぞれは、その端面上まで延出
して形成されている。さらに、樹脂基板２の一端部２ａ
には抵抗パターン３と電気的に接続される一対の電極端
子５がインサートモールドによって埋設されており、こ
れらの端縁部５ａそれぞれは取付部４の一端部２ａ側に
位置する内面に沿って露出されている。Further, each edge portion 3a of the resistor pattern 3 arranged in parallel at one end portion of the resistor substrate 1 is formed to extend onto the end surface thereof. Furthermore, one end 2a of the resin substrate 2
A pair of electrode terminals 5 electrically connected to the resistor pattern 3 are embedded in the resistor pattern 3 by insert molding, and each of these edge portions 5a is exposed along the inner surface located on the one end 2a side of the mounting portion 4. has been done.
そこで、抵抗基板１を樹脂基板２の取付部４に圧入する
ことによって取り付けると、この取付部４の内面に沿っ
て露出した電極端子５の端縁部５ａと、抵抗基板１の一
端部の端面上にまで延出された抵抗パターン３の端縁部
３ａとが互いに圧着されて導通接続されることになる。Therefore, when the resistance board 1 is attached by press-fitting into the attachment part 4 of the resin board 2, the end edge 5a of the electrode terminal 5 exposed along the inner surface of the attachment part 4 and the end face of one end of the resistance board 1 are removed. The end edges 3a of the resistor pattern 3 extending upward are pressed together and electrically connected.
第１災施開
第３図（ａ）は本発明の第３実施例にかかる可変抵抗器
の要部の分解状態を示す斜視図であり、第３図（ｂ）は
その組立状態を部分的に示す断面図である。なお、これ
らの図において第１図（ａ） 、 （ｂ）及び第２図（
ａ） 、 （ｂ）と互いに同一もしくは相当する部品、
部分には同一符号を付し、ここでの詳しい説明は省略す
る。FIG. 3(a) is a perspective view showing an exploded state of main parts of a variable resistor according to a third embodiment of the present invention, and FIG. 3(b) is a partially assembled state of the variable resistor according to the third embodiment of the present invention. FIG. In addition, in these figures, Fig. 1 (a), (b) and Fig. 2 (
a), parts that are the same as or equivalent to (b),
The same reference numerals are given to the parts, and detailed explanation thereof will be omitted here.
この第３実施例にかかる可変抵抗器は、表面上に略円弧
状の抵抗パターン３が形成された抵抗基板１と、これを
取り付ける取付部４が形成された樹脂基板２とを備えて
おり、この樹脂基板２に形成された取付部４の内面間距
離りは、抵抗基板１の両端縁面間距離！よりも長めに設
定されている（Ｌ＞１）。そこで、この抵抗基板１を樹
脂基板２の取付部４に取り付けた際には、この抵抗基板
１と取付部４との間に隙間が生じることになる。The variable resistor according to the third embodiment includes a resistance substrate 1 on which a substantially arc-shaped resistance pattern 3 is formed, and a resin substrate 2 on which a mounting portion 4 for attaching the same is formed. The distance between the inner surfaces of the mounting portions 4 formed on this resin substrate 2 is the distance between both end surfaces of the resistor substrate 1! (L>1). Therefore, when this resistance board 1 is attached to the attachment part 4 of the resin board 2, a gap will be created between this resistance board 1 and the attachment part 4.
また、第２実施例にかかる可変抵抗器と同様、この抵抗
基板１の一端部に並列配置された抵抗パターン３の端縁
部３ａは端面上まで延出して形成されており、樹脂基板
２の一端部２ａに埋設された一対の電極端子５の端縁部
５ａそれぞれは取付部４の一端部２ａ側に位置する内面
に沿って露出さられている。Further, similarly to the variable resistor according to the second embodiment, the edge portion 3a of the resistor pattern 3 arranged in parallel at one end of the resistor substrate 1 is formed to extend above the end surface, and is formed on the resin substrate 2. The end edges 5a of the pair of electrode terminals 5 embedded in the one end 2a are exposed along the inner surface of the mounting portion 4 located on the one end 2a side.
そして、この樹脂基板２の取付部４の内面に沿って露出
した電極端子５の端縁部５ａと、この取付部４に取り付
けられた抵抗基板１の端面上にまで延出された抵抗パタ
ーン３の端縁部３ａとの間それぞれ、すなわち、抵抗基
板１と取付部４との間に生じた隙間には、例えば、導電
ゴムや異方性導電ゴムのような導電性を有する弾性部材
８が介装されている。そこで、抵抗パターン３と電極端
子５とは、この導電性を有する弾性部材８を介して互い
に導通接続されることになる。Then, the edge portion 5a of the electrode terminal 5 exposed along the inner surface of the attachment portion 4 of this resin substrate 2, and the resistance pattern 3 extended onto the end surface of the resistance substrate 1 attached to this attachment portion 4. An elastic member 8 having conductivity, such as conductive rubber or anisotropic conductive rubber, is provided in each gap between the end edge portion 3a of the resistance board 1 and the mounting portion 4. It has been intervened. Therefore, the resistance pattern 3 and the electrode terminal 5 are electrically connected to each other via the conductive elastic member 8.
〈発明の効果〉
以上説明したように、本発明にかかる可変抵抗器は、互
いに別体として構成された抵抗基板と樹脂基板とを備え
ており、この抵抗基板には抵抗パターンが形成され、か
つ、その端縁部は抵抗基板の一端部に並列配置されてい
る。そして、樹脂基板には抵抗基板を取り付ける取付部
が形成されるとともに、抵抗パターンと電気的に接続さ
れる一対の電極端子が埋設されており、これらの端縁部
同士は半田付は以外の手法、すなわち、導電性接着剤の
被覆、圧着及び導電性を有する弾性部材の介装によって
導通接続されている。そこで、この可変抵抗器において
は、高価な銀ペーストからなる引出電極パターンを形成
したうえでこれに電極端子を半田付は接続する必要がな
く、電極端子を抵抗基板にかしめ付ける必要もなくなる
結果、製造工程の大幅な簡略化を図ることが可能となり
、材料及び製造コストの大幅な低減を図ることができる
という効果が得られる。また、セラミック材料からなる
抵抗基板を用いれば、サーメットを用いることによって
高精度の抵抗パターンを形成し、かつ、抵抗値変化の小
さい高特性を得ることが可能となり、可変抵抗器の有す
る精度の向上を実現することもできる。<Effects of the Invention> As explained above, the variable resistor according to the present invention includes a resistance substrate and a resin substrate that are configured separately from each other, and a resistance pattern is formed on the resistance substrate. , its edge portion is arranged parallel to one end portion of the resistor substrate. A mounting part for attaching the resistor board is formed in the resin board, and a pair of electrode terminals that are electrically connected to the resistor pattern are embedded in the resin board, and these edges cannot be connected to each other by any method other than soldering. That is, conductive connection is achieved by coating with a conductive adhesive, crimping, and interposing an elastic member having conductivity. Therefore, in this variable resistor, there is no need to form an extraction electrode pattern made of expensive silver paste and connect the electrode terminal to it by soldering, and there is no need to caulk the electrode terminal to the resistance board. It is possible to significantly simplify the manufacturing process, and it is possible to achieve the effect that materials and manufacturing costs can be significantly reduced. In addition, by using a resistance substrate made of ceramic material, it is possible to form a highly accurate resistance pattern using cermet and obtain high characteristics with small resistance value changes, improving the accuracy of variable resistors. It is also possible to realize
第１図ないし第３図は本発明の実施例にかかり、第１図
（ａ）は第１実施例にかかる可変抵抗器の組立状態を示
す斜視図、第１図（ｂ）はその要部を分解して示す斜視
図、第２図（ａ）は第２実施例にかかる可変抵抗器の要
部の分解状態を示す斜視図、第２図（ｂ）はその組立状
態を部分的に示す断面図であり、第３図（ａ）は第３実
施例にかかる可変抵抗器の要部の分解状態を示す斜視図
、第３図（ｂ）はその組立状態を部分的に示す断面図で
ある。また、第４図及び第５図のそれぞれは、従来例に
かかる可変抵抗器の組立状態を示す斜視図である。
図における符号１は抵抗基板、２は樹脂基板、３は抵抗
パターン、３ａはその端縁部、４は取付部、５は電極端
子、５ａはその端縁部、６は導電性接着剤、８は弾性部
材である。
なお、図中の同一符号は、互いに同一もしくは相当する
部品、部分を示している。1 to 3 show embodiments of the present invention, FIG. 1(a) is a perspective view showing an assembled state of the variable resistor according to the first embodiment, and FIG. 1(b) shows the main parts thereof. FIG. 2(a) is an exploded perspective view of the main parts of the variable resistor according to the second embodiment, and FIG. 2(b) partially shows its assembled state. 3(a) is a perspective view showing an exploded state of essential parts of a variable resistor according to a third embodiment, and FIG. 3(b) is a sectional view partially showing its assembled state. be. Furthermore, each of FIGS. 4 and 5 is a perspective view showing an assembled state of a variable resistor according to a conventional example. In the figure, 1 is a resistance board, 2 is a resin substrate, 3 is a resistance pattern, 3a is an edge thereof, 4 is a mounting part, 5 is an electrode terminal, 5a is an edge thereof, 6 is a conductive adhesive, 8 is an elastic member. Note that the same reference numerals in the drawings indicate parts and portions that are the same or correspond to each other.
Claims (5)
、 抵抗基板（１）の表面上には略円弧状の抵抗パターン（
３）が形成され、かつ、その一端部には抵抗パターン（
３）の両端から延出された端縁部（３ａ）が並列配置さ
れるとともに、 樹脂基板（２）の上面には抵抗基板（１）を取り付ける
取付部（４）が形成され、かつ、その一端部には一対の
電極端子（５）が埋設されており、樹脂基板（２）の取
付部（４）に取り付けられた抵抗基板（１）の抵抗パタ
ーン（３）の端縁部（３ａ）と、電極端子（５）の端縁
部（５ａ）とが電気的に接続されていることを特徴とす
る可変抵抗器。(1) It is equipped with a resistance board (1) and a resin board (2), and a substantially arc-shaped resistance pattern (
3) is formed, and a resistor pattern (
The edge portions (3a) extending from both ends of the resin substrate (3) are arranged in parallel, and a mounting portion (4) for attaching the resistor substrate (1) is formed on the upper surface of the resin substrate (2). A pair of electrode terminals (5) are embedded in one end, and the edge (3a) of the resistance pattern (3) of the resistance board (1) is attached to the attachment part (4) of the resin board (2). and an end edge (5a) of an electrode terminal (5) are electrically connected to each other.
特徴とする請求項１記載の可変抵抗器。(2) The variable resistor according to claim 1, characterized in that the resistance substrate (1) is made of a ceramic material.
）の表面に沿って露出されており、 これらの端縁部（５ａ）と抵抗パターン（３）の端縁部
（３ａ）とが導電性接着剤（６）によって電気的に接続
されていることを特徴とする請求項１記載の可変抵抗器
。(3) The edge portion (5a) of the electrode terminal (5) is connected to the resin substrate (2).
), and these edges (5a) and the edges (3a) of the resistor pattern (3) are electrically connected by a conductive adhesive (6). The variable resistor according to claim 1, characterized in that:
（１）の一端部の端面上まで延出されるとともに、電極
端子（５）の端縁部（５ａ）が樹脂基板（２）の取付部
（４）の内面に沿って露出されており、 これらの端縁部（５ａ）に抵抗パターン（３）の端縁部
（３ａ）が圧着されて電気的に接続されていることを特
徴とする請求項１記載の可変抵抗器。(4) The end edge (3a) of the resistor pattern (3) extends above the end surface of one end of the resistor substrate (1), and the end edge (5a) of the electrode terminal (5) extends over the end surface of the resin substrate (2). ) are exposed along the inner surface of the mounting portion (4) of the resistor pattern (3), and the edge portions (3a) of the resistor pattern (3) are crimped and electrically connected to these edge portions (5a). The variable resistor according to claim 1, characterized in that:
（１）の一端部の端面上まで延出されるとともに、電極
端子（５）の端縁部（５ａ）が樹脂基板（２）の取付部
（４）の内面に沿って露出されており、 抵抗パターン（３）の端縁部（３ａ）と、電極端子（５
）の端縁部（５ａ）とが導電性を有する弾性部材（８）
を介して電気的に接続されていることを特徴とする請求
項１記載の可変抵抗器。(5) The edge (3a) of the resistance pattern (3) extends above the end surface of one end of the resistance substrate (1), and the edge (5a) of the electrode terminal (5) extends over the end surface of the resin substrate (2). ) is exposed along the inner surface of the mounting part (4) of the resistor pattern (3) and the edge part (3a) of the resistor pattern (3) and the electrode terminal (5).
) and an elastic member (8) whose end edge (5a) is electrically conductive.
2. The variable resistor according to claim 1, wherein the variable resistor is electrically connected via a.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1-274360 | 1989-10-20 | ||
| JP27436089 | 1989-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03204902A true JPH03204902A (en) | 1991-09-06 |
| JP2531012B2 JP2531012B2 (en) | 1996-09-04 |
Family
ID=17540574
Family Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28245690A Pending JPH03204904A (en) | 1989-10-20 | 1990-10-19 | Variable resistor |
| JP28245290A Pending JPH03204906A (en) | 1989-10-20 | 1990-10-19 | Chip type variable resistor |
| JP28245590A Pending JPH03204903A (en) | 1989-10-20 | 1990-10-19 | Variable resistor |
| JP28245190A Pending JPH03204905A (en) | 1989-10-20 | 1990-10-19 | Chip type variable resistor |
| JP28245390A Pending JPH03204901A (en) | 1989-10-20 | 1990-10-19 | Variable resistor |
| JP2282454A Expired - Fee Related JP2531012B2 (en) | 1989-10-20 | 1990-10-19 | Variable resistor |
Family Applications Before (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28245690A Pending JPH03204904A (en) | 1989-10-20 | 1990-10-19 | Variable resistor |
| JP28245290A Pending JPH03204906A (en) | 1989-10-20 | 1990-10-19 | Chip type variable resistor |
| JP28245590A Pending JPH03204903A (en) | 1989-10-20 | 1990-10-19 | Variable resistor |
| JP28245190A Pending JPH03204905A (en) | 1989-10-20 | 1990-10-19 | Chip type variable resistor |
| JP28245390A Pending JPH03204901A (en) | 1989-10-20 | 1990-10-19 | Variable resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (6) | JPH03204904A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05182805A (en) * | 1991-12-27 | 1993-07-23 | Aichi Electric Co Ltd | Smoothing wiring circuit board and manufacture thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6482883B2 (en) * | 2015-01-23 | 2019-03-13 | アルプスアルパイン株式会社 | RESISTANCE BOARD INTEGRATED SUPPORT, ROTARY VARIABLE RESISTOR USING THE RESISTANCE BOARD INTEGRATED SUPPORT, AND METHOD FOR PRODUCING THE RESISTANCE BOARD INTEGRATED SUPPORT |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58210603A (en) * | 1982-06-01 | 1983-12-07 | 北陸電気工業株式会社 | Method of producing substrate for variable resistor |
| JPS62104020A (en) * | 1985-10-30 | 1987-05-14 | 株式会社村田製作所 | Electronic structural parts |
| JPS62104405U (en) * | 1985-12-23 | 1987-07-03 |
-
1990
- 1990-10-19 JP JP28245690A patent/JPH03204904A/en active Pending
- 1990-10-19 JP JP28245290A patent/JPH03204906A/en active Pending
- 1990-10-19 JP JP28245590A patent/JPH03204903A/en active Pending
- 1990-10-19 JP JP28245190A patent/JPH03204905A/en active Pending
- 1990-10-19 JP JP28245390A patent/JPH03204901A/en active Pending
- 1990-10-19 JP JP2282454A patent/JP2531012B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58210603A (en) * | 1982-06-01 | 1983-12-07 | 北陸電気工業株式会社 | Method of producing substrate for variable resistor |
| JPS62104020A (en) * | 1985-10-30 | 1987-05-14 | 株式会社村田製作所 | Electronic structural parts |
| JPS62104405U (en) * | 1985-12-23 | 1987-07-03 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05182805A (en) * | 1991-12-27 | 1993-07-23 | Aichi Electric Co Ltd | Smoothing wiring circuit board and manufacture thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03204906A (en) | 1991-09-06 |
| JPH03204904A (en) | 1991-09-06 |
| JPH03204903A (en) | 1991-09-06 |
| JPH03204905A (en) | 1991-09-06 |
| JP2531012B2 (en) | 1996-09-04 |
| JPH03204901A (en) | 1991-09-06 |
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