JPH076910A - Rod type resistor - Google Patents
Rod type resistorInfo
- Publication number
- JPH076910A JPH076910A JP5172660A JP17266093A JPH076910A JP H076910 A JPH076910 A JP H076910A JP 5172660 A JP5172660 A JP 5172660A JP 17266093 A JP17266093 A JP 17266093A JP H076910 A JPH076910 A JP H076910A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- terminal cap
- rod
- lead wire
- shaped
- 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
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000010408 film Substances 0.000 description 22
- 230000001681 protective effect Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009966 trimming Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Details Of Resistors (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Non-Adjustable Resistors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は棒状抵抗器の端子キャッ
プに関し、さらに詳しくは、リード線の溶着方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal cap for a rod-shaped resistor, and more particularly to a method for welding lead wires.
【０００２】[0002]
【従来の技術】この種の棒状抵抗器は従来、以下に示す
プロセスで製造されている。 先ず、図３（Ａ）に示すように、セラミック等の絶縁
体からなる棒状の抵抗体１０の外表面の全体にスパッタ
リングや真空蒸着等の適宜手段で抵抗膜１１を形成し、
抵抗体１０の外周における抵抗膜１１に、抵抗値を調整
するためのトリミング溝１２を螺旋状に形成する。2. Description of the Related Art A rod-shaped resistor of this type is conventionally manufactured by the following process. First, as shown in FIG. 3 (A), a resistive film 11 is formed on the entire outer surface of a rod-shaped resistor 10 made of an insulator such as ceramics by an appropriate means such as sputtering or vacuum deposition.
A trimming groove 12 for adjusting the resistance value is formed in a spiral shape on the resistance film 11 on the outer periphery of the resistor 10.
【０００３】そして、図３（Ｂ）に示すように、抵抗
体１０の両端部に、表面に銅メッキまたは錫メッキ等の
メッキを施した鉄製等の端子キャップ１３を嵌着する。Then, as shown in FIG. 3B, terminal caps 13 made of iron or the like having a surface plated with copper or tin are fitted on both ends of the resistor 10.
【０００４】次に、図３（Ｃ）に示すように、端子キ
ャップ１３の外端面にクランプ体１４にて掴持した銅製
等のリード線１５の一端を押圧し、その状態で、リード
線１５と端子キャップ１３との間に電流を印加すること
により、リード線１５の一端を端子キャップ１３に溶着
する。Next, as shown in FIG. 3C, one end of a lead wire 15 made of copper or the like held by the clamp body 14 is pressed against the outer end surface of the terminal cap 13, and in that state, the lead wire 15 is pressed. By applying a current between the terminal cap 13 and the terminal cap 13, one end of the lead wire 15 is welded to the terminal cap 13.
【０００５】さらに、図３（Ｄ）に示すように、抵抗
体１０の外面と端子キャップ１３の外周面とを覆うよう
に保護膜１６を形成して棒状抵抗器を製造していた。 上記のプロセスにて、例えば、０．２ｗの電気抵抗値の
棒状抵抗器を製造する時に、端子キャップは０．２ｍｍ
程度の板厚の材料を用い、抵抗体に対する端子キャップ
の嵌合力で棒状抵抗器の端子の固定強度を確保してい
た。Further, as shown in FIG. 3D, a protective film 16 is formed so as to cover the outer surface of the resistor 10 and the outer peripheral surface of the terminal cap 13 to manufacture a rod-shaped resistor. In the above process, for example, when manufacturing a rod-shaped resistor having an electric resistance value of 0.2 w, the terminal cap is 0.2 mm.
A material having a plate thickness of about a certain degree was used to secure the fixing strength of the terminal of the rod-shaped resistor by the fitting force of the terminal cap with respect to the resistor.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記の従来の
製造プロセスにて製造された棒状抵抗器の構造には、次
のような問題点があった。棒状抵抗器の端子キャップと
抵抗体との外周に段差があるため、それらの表面に保護
膜を被覆した場合も段差が残ってしまう。そのため図４
に示すように、棒状抵抗器を基板に実装したときに押圧
されることにより応力が加わり、保護膜が欠損したり、
抵抗体に亀裂が生じてしまうという問題があった。However, the structure of the rod-shaped resistor manufactured by the above conventional manufacturing process has the following problems. Since there is a step on the outer circumference of the terminal cap of the rod-shaped resistor and the resistor, the step remains even when the surface thereof is covered with a protective film. Therefore,
As shown in, stress is applied by being pressed when the rod-shaped resistor is mounted on the substrate, the protective film is damaged,
There was a problem that the resistor would crack.
【０００７】一方、上記の抵抗体の実装時の応力を回避
するために、端子キャップの厚みを薄くし、端子キャッ
プと抵抗体との段差を小さくすると、端子キャップの抵
抗体に対する掴持力が不足し、端子キャップが抵抗体か
ら外れてしまったり、棒状抵抗器を基板に実装するとき
に押圧されることから生じる応力により端子キャップに
亀裂等が生じ、充分な端子強度が得られないという問題
があった。On the other hand, in order to avoid the stress at the time of mounting the resistor, if the thickness of the terminal cap is reduced and the step between the terminal cap and the resistor is reduced, the gripping force of the terminal cap on the resistor is increased. There is a shortage, the terminal cap will come off from the resistor, or the stress caused by being pressed when mounting the rod-shaped resistor on the board will cause cracks etc. on the terminal cap, and sufficient terminal strength cannot be obtained was there.
【０００８】さらに、端子キャップと抵抗体の部分に大
きな段差があるために、実装時のショートを防止するた
め、特に端子キャップの部分の保護膜の厚みを厚くする
と、抵抗体の部分の保護膜が厚くなりすぎ、棒状抵抗器
の形状が樽状の形状不良になってしまうために充分な絶
縁耐圧性を確保しにくいという問題があった。本発明
は、上記の問題を解消するようにした棒状抵抗器を提供
することを目的とする。Further, since there is a large step between the terminal cap and the resistor, in order to prevent a short circuit during mounting, particularly when the thickness of the protective film of the terminal cap is increased, the protective film of the resistor is protected. Is too thick, and the shape of the rod-shaped resistor becomes a barrel-shaped defect, so that there is a problem that it is difficult to secure sufficient withstand voltage. An object of the present invention is to provide a rod-shaped resistor that solves the above problems.
【０００９】[0009]
【課題を解決するための手段】上記の問題点を解決する
ために本発明は、棒状に形成した絶縁体の表面に抵抗膜
を被覆することにより抵抗体を形成し、該抵抗体の両対
向端部に端子キャップを嵌着し、該端子キャップにそれ
ぞれリード線を溶着してなる棒状抵抗器において、該リ
ード線を該端子キャップの端面に押圧させて、該抵抗体
と溶着したことを特徴とする。In order to solve the above problems, the present invention forms a resistor by covering the surface of a rod-shaped insulator with a resistive film, and the resistor is opposed to each other. In a rod-shaped resistor in which a terminal cap is fitted to an end portion and a lead wire is welded to the terminal cap, the lead wire is pressed against an end surface of the terminal cap to be welded to the resistor. And
【００１０】[0010]
【作用及び効果】リード線を端子キャップの端面に押圧
させてリード線と端子キャップの間に電流を印加する
と、リード線と端子キャップとの押圧箇所に発生する抵
抗熱によってリード線の一端と端子キャップの直径方向
の中心部とが溶ける。そして、抵抗体を被覆している抵
抗膜は、炭素やニッケル、クローム等の金属から成って
いるので、図２に示すように、リード線と端子キャップ
が溶けた部分が抵抗体の抵抗膜に溶着することにより、
リード線と端子キャップとが溶着されるのみならず、リ
ード線と抵抗体の間も溶着されるので、端子キャップの
板厚を薄くしても端子キャップの掴持力やリード線の溶
着力が低下することがなく、充分な端子強度を得ること
ができる。[Operation and effect] When the lead wire is pressed against the end surface of the terminal cap and an electric current is applied between the lead wire and the terminal cap, one end of the lead wire and the terminal are generated due to resistance heat generated at the pressed portion between the lead wire and the terminal cap. The diametrical center of the cap melts. Since the resistance film covering the resistor is made of a metal such as carbon, nickel, or chrome, the portion where the lead wire and the terminal cap are melted becomes the resistance film of the resistor as shown in FIG. By welding,
Not only the lead wire and the terminal cap are welded, but also the lead wire and the resistor are welded, so even if the thickness of the terminal cap is thin, the gripping force of the terminal cap and the welding force of the lead wire are It is possible to obtain sufficient terminal strength without lowering.
【００１１】このため、端子キャップと抵抗体の段差が
小さくでき、実装時に棒状抵抗器にかかる応力が少なく
なり、保護膜の欠けや抵抗体に亀裂が生じるのを防止す
ることができる。Therefore, the step between the terminal cap and the resistor can be made small, the stress applied to the rod-shaped resistor at the time of mounting can be reduced, and the chipping of the protective film and the cracking of the resistor can be prevented.
【００１２】また、端子キャップと抵抗体の段差が小さ
くなるので、棒状抵抗器の形状にとらわれることなく、
端子キャップの部分の保護膜を従来のものに較べて厚く
被覆でき、基板に実装した棒状抵抗器の絶縁耐圧性を向
上させることができる。Further, since the step difference between the terminal cap and the resistor becomes small, the shape of the rod-shaped resistor is not restricted.
The protective film on the terminal cap portion can be covered thicker than the conventional one, and the withstand voltage of the rod-shaped resistor mounted on the substrate can be improved.
【００１３】さらに、端子キャップに用いる板材の板厚
を薄くできるので、棒状抵抗器の製造に要するコストを
削減できる。Further, since the plate material used for the terminal cap can be made thin, the cost required for manufacturing the rod-shaped resistor can be reduced.
【００１４】[0014]
【実施例】本発明の実施例を図面をもとに、０．２ｗの
電気的抵抗値を有する棒状抵抗器について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings on a rod-shaped resistor having an electrical resistance value of 0.2 w.
【００１５】先ず、図１（Ａ）に示すように、セラミ
ック等の絶縁体からなる棒状の抵抗体１の外表面の全体
にスパッタリングや真空蒸着により炭素またはニクロム
等の金属薄膜を抵抗膜２として形成し、抵抗体１の外周
における抵抗膜２に抵抗値を調整するためのトリミング
溝３を螺旋状に形成する。First, as shown in FIG. 1A, a metal thin film such as carbon or nichrome is used as a resistance film 2 on the entire outer surface of a rod-shaped resistor 1 made of an insulator such as ceramic by sputtering or vacuum deposition. The trimming groove 3 for adjusting the resistance value is spirally formed in the resistance film 2 on the outer periphery of the resistor 1.
【００１６】そして、図１（Ｂ）に示すように、抵抗
体１の両端部に、表面に銅メッキまたは錫メッキ等のメ
ッキを施した鉄製の端子キャップ４を嵌着する。このと
きの端子キャップは厚みが０．０７〜０．１ｍｍの板厚
の材料から作られており、抵抗体１に嵌着される。Then, as shown in FIG. 1B, terminal caps 4 made of iron, the surface of which is plated with copper or tin, are fitted to both ends of the resistor 1. The terminal cap at this time is made of a material having a plate thickness of 0.07 to 0.1 mm, and is fitted to the resistor 1.
【００１７】次に、図１（Ｃ）、図２に示すように、
キャップ４の外端面にクランプ体５により掴持した銅等
からなるリード線６の一端を押圧し、その状態で、リー
ド線６とキャップ４との間に電流を印加することによ
り、リード線６と端子キャップ４との接当箇所に発生す
る抵抗熱によってリード線６と端子キャップ４との接当
箇所を溶融させ、リード線６と端子キャップ４を抵抗体
１の抵抗膜２に溶着する。このときのリード線の押圧お
よび印加の条件は、押圧力が６〜７ｋｇ、２次電源のピ
ーク電圧が１．５〜２．０Ｖ、ピーク電流が７０〜９０
Ａの範囲で行われる。Next, as shown in FIG. 1 (C) and FIG.
By pressing one end of the lead wire 6 made of copper or the like held by the clamp body 5 against the outer end surface of the cap 4, and applying a current between the lead wire 6 and the cap 4 in this state, the lead wire 6 The contact point between the lead wire 6 and the terminal cap 4 is melted by resistance heat generated at the contact point between the lead wire 6 and the terminal cap 4, and the lead wire 6 and the terminal cap 4 are welded to the resistance film 2 of the resistor 1. At this time, the lead wire is pressed and applied with a pressing force of 6 to 7 kg, a peak voltage of the secondary power supply of 1.5 to 2.0 V, and a peak current of 70 to 90.
It is performed in the range of A.
【００１８】さらに、図１（Ｄ）に示すように、抵抗
体１の外面と端子キャップ４の外周面を被覆するように
保護膜７を形成して棒状抵抗器を製造し、本発明の棒状
抵抗器を得る。このときの保護膜の材料は従来から用い
られている、エポキシ系等の熱付着性の粉末塗料を使用
して、抵抗体１を加熱した状態で塗料槽内で転動させる
ことにて、塗料粉末を抵抗体１の外周面に塗布して形成
される。Further, as shown in FIG. 1 (D), a protective film 7 is formed so as to cover the outer surface of the resistor 1 and the outer peripheral surface of the terminal cap 4, to manufacture a rod-shaped resistor. Get a resistor. The material of the protective film at this time is a conventionally used heat-adhesive powder coating such as epoxy, and the resistor 1 is rolled in the coating tank in a heated state. It is formed by applying powder to the outer peripheral surface of the resistor 1.
【００１９】本発明は以上のように、その製造プロセス
において、リード線の溶着時の押圧力と印加条件を変更
するだけで、製造装置等を大幅に変更する必要がなく簡
単に、しかも棒状抵抗器の端子の固定強度を充分に確保
しながら、棒状抵抗器の端子キャップの板厚を薄くする
ことができ、基板実装時の絶縁耐圧特性を向上させるこ
とができるのみならず、同時に製造時に要するコストも
削減することが可能である。As described above, according to the present invention, in the manufacturing process, by simply changing the pressing force and the application conditions at the time of welding of the lead wire, it is not necessary to drastically change the manufacturing apparatus or the like, and the rod-shaped resistance is simple. The thickness of the terminal cap of the rod-shaped resistor can be reduced while securing sufficient fixing strength for the terminals of the resistor, and it is possible to improve the dielectric strength characteristics when mounting on the board, and at the same time, it is necessary during manufacturing. Costs can also be reduced.
【００２０】さらに、リード線と端子キャップとが抵抗
体に溶着されるので、端子キャップの固定強度が低下す
ることなく、端子キャップの板厚を薄くするだけでな
く、端子キャップの深さを浅くすることができるので、
抵抗体の大きさを変更することなく抵抗膜のトリミング
した部位の長さを長くすることができるから、抵抗器の
大きさが従来と同じであっても、熱の放散を促進して耐
久性を向上できると共に電流雑音を少なくできるのであ
り、抵抗器を大型化することなく品質を向上することが
できる。Further, since the lead wire and the terminal cap are welded to the resistor, the fixing strength of the terminal cap is not lowered, and not only the plate thickness of the terminal cap is reduced but also the depth of the terminal cap is reduced. Because you can
Since the length of the trimmed part of the resistance film can be increased without changing the size of the resistor, even if the size of the resistor is the same as before, it promotes heat dissipation and improves durability. And the current noise can be reduced, and the quality can be improved without enlarging the resistor.
【図１】本発明の棒状抵抗器の製造プロセスを説明する
ための図FIG. 1 is a diagram for explaining a manufacturing process of a rod-shaped resistor of the present invention.
【図２】本発明の棒状抵抗器の構造を示す要部断面図FIG. 2 is a sectional view of an essential part showing the structure of a rod-shaped resistor of the present invention.
【図３】従来の棒状抵抗器の製造プロセスを説明するた
めの図FIG. 3 is a diagram for explaining a manufacturing process of a conventional rod-shaped resistor.
【図４】棒状抵抗器の実装時の状態を示す概略図FIG. 4 is a schematic diagram showing a state in which a rod-shaped resistor is mounted.
１・・・・抵抗体 ２・・・・抵抗膜 ３・・・・トリミング溝 ４・・・・端子キャップ ５・・・・クランプ体 ６・・・・リード線 ７・・・・保護膜 １０・・・抵抗体 １１・・・抵抗膜 １２・・・トリミング溝 １３・・・端子キャップ １４・・・クランプ体 １５・・・リード線 １６・・・保護膜 １７・・・基板 1 ... Resistor 2 ... Resistive film 3 ... Trimming groove 4 ... Terminal cap 5 ... Clamping body 6 ... Lead wire 7 ... Protective film 10 ... resistor 11 ... resistive film 12 ... trimming groove 13 ... terminal cap 14 ... clamping body 15 ... lead wire 16 ... protective film 17 ... substrate
Claims (1)
覆することにより抵抗体を形成し、前記抵抗体の両対向
端部に端子キャップを嵌着し、前記端子キャップにそれ
ぞれリード線を溶着してなる棒状抵抗器において、 前記リード線を前記端子キャップの端面に押圧させて、
前記抵抗体と溶着したことを特徴とする棒状抵抗器。1. A resistor is formed by covering a surface of a rod-shaped insulator with a resistance film, and terminal caps are fitted to both ends of the resistor, and lead wires are respectively attached to the terminal caps. In a rod-shaped resistor formed by welding, by pressing the lead wire against the end surface of the terminal cap,
A rod-shaped resistor, which is welded to the resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5172660A JPH076910A (en) | 1993-06-18 | 1993-06-18 | Rod type resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5172660A JPH076910A (en) | 1993-06-18 | 1993-06-18 | Rod type resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH076910A true JPH076910A (en) | 1995-01-10 |
Family
ID=15946020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5172660A Pending JPH076910A (en) | 1993-06-18 | 1993-06-18 | Rod type resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH076910A (en) |
-
1993
- 1993-06-18 JP JP5172660A patent/JPH076910A/en active Pending
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