JPS5841752Y2 - Sheath heater terminal bar - Google Patents
Sheath heater terminal barInfo
- Publication number
- JPS5841752Y2 JPS5841752Y2 JP1978085033U JP8503378U JPS5841752Y2 JP S5841752 Y2 JPS5841752 Y2 JP S5841752Y2 JP 1978085033 U JP1978085033 U JP 1978085033U JP 8503378 U JP8503378 U JP 8503378U JP S5841752 Y2 JPS5841752 Y2 JP S5841752Y2
- Authority
- JP
- Japan
- Prior art keywords
- sheath
- terminal bar
- sheath heater
- diameter
- heater terminal
- 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
Description
【考案の詳細な説明】
本案はシースヒーターにおける電極用端子棒に関する考
案である。[Detailed Description of the Invention] This invention is an invention related to an electrode terminal bar in a sheath heater.
シースヒーターは電熱線の両端をシースの両端に固定し
た端子棒に接続し、シース内に絶縁剤を充填してなるも
のであり、絶縁剤の充填密度を高めるためシース内に予
め粉末状或は固形の絶縁剤を装入し、このシースをスェ
ージングマシン或はドローベンチ等の減径機械にかけて
シースの外径を減径して目的を達成している。A sheathed heater is made by connecting both ends of a heating wire to terminal rods fixed to both ends of the sheath, and filling the sheath with an insulating agent.In order to increase the filling density of the insulating agent, powdered or A solid insulating material is charged and the sheath is passed through a diameter reducing machine such as a swaging machine or a draw bench to reduce the outer diameter of the sheath to achieve the purpose.
しかるにシースヒーターの両端には電極用の端子棒（金
属質）が存在し、中間部は電熱線と絶縁剤だけであるた
め、両端と中間とでは減径のためシースに加えられる圧
力に対する抵抗が異る、即ち端子棒の存在する両端では
抵抗が大きく中間では少い、このため減径加工したシー
スヒーターを見るとき端子棒の内側端に相当する部分で
シース外径に段差が生じたり、端子棒の内側端が変形す
る等の欠陥があった。However, since there are terminal rods (metallic) for the electrodes at both ends of the sheath heater, and the middle part is just the heating wire and insulating material, there is resistance to the pressure applied to the sheath due to the diameter reduction at both ends and the middle. In other words, the resistance is high at both ends where the terminal bar is present, and low at the middle.For this reason, when looking at a sheath heater whose diameter has been reduced, there is a step in the outer diameter of the sheath at the part corresponding to the inner end of the terminal bar, and the resistance is low at the ends where the terminal bar is located. There were defects such as deformation of the inner end of the rod.
本案はこれらの欠陥を解消せんとするもので端子棒の内
側部に軸線方向の穴を設けたことを特徴とする。The present invention aims to eliminate these defects and is characterized by providing an axial hole in the inner side of the terminal bar.
以下実施例を図示して説明する、図はシースヒーターの
端部の一部拡大断面図でシース１の端部中心に電極用の
端子棒２が配設され、その内側部中心に、シースの軸線
と平行に穴３が穿設されている、電熱線４はその一端を
端子棒２に溶接され、螺旋状をなしてシース１内を他端
の端子棒まで延びている、シース１内には絶縁剤５が均
一に充填されている、尚穴３内にも絶縁剤５を均一に充
填することが望ましい。An example will be described below with reference to the drawings. The figure is a partially enlarged sectional view of the end of a sheath heater, in which a terminal rod 2 for an electrode is arranged at the center of the end of the sheath 1, and a terminal rod 2 for an electrode is arranged at the center of the inner side of the sheath. A heating wire 4 has one end welded to the terminal bar 2 and extends inside the sheath 1 in a spiral to the terminal bar at the other end, in which a hole 3 is bored parallel to the axis. The insulating material 5 is uniformly filled in the hole 3, and it is desirable that the insulating material 5 is evenly filled in the hole 3 as well.
以上の組合体を減径機械にかけて、減径すると端子棒２
の内側部には軸線方向の穴３が穿設されており、シース
外部に加えられた圧力に対し穴３の径を縮少することに
より前記外圧に対する抵抗は弱められるため、抵抗の弱
いａ部分と抵抗の強いｂ部分の中間にあって両部会ａが
らｂへの抵抗の急激な変化をさけることができ穴３の深
さに相当する長さに於て順次抵抗が変化するので同−強
さの加圧力でシース外部を減径加工しても、その結果シ
ース外部に急激な変化はなく、従来品の如くシース外部
に段差が出来たり、端子棒の一部が変形する様なことは
な〈従来品の欠陥は解消するのである。The above assembly is put through a diameter reducing machine, and when the diameter is reduced, the terminal bar 2
A hole 3 in the axial direction is bored in the inner part of the sheath, and by reducing the diameter of the hole 3 against the pressure applied to the outside of the sheath, the resistance to the external pressure is weakened, so that the part a has weak resistance. Since the resistance changes sequentially in the length corresponding to the depth of hole 3, it is possible to avoid a sudden change in the resistance between the two sections A and B, which have strong resistance. Even if the outside of the sheath is reduced in diameter with the pressure of (The defects of conventional products will be resolved.
添附図面は本考案実施例品の要部の拡大断面図。
符号の説明 １・・・・・・シース、２・・・・・・端
子棒、３・・・・・・穴、４・・・・・・電熱線、５・
・・・・・絶縁剤。The attached drawing is an enlarged sectional view of the main parts of the product according to the present invention. Explanation of symbols 1... Sheath, 2... Terminal bar, 3... Hole, 4... Heating wire, 5...
...Insulating agent.
Claims (1)
側部に軸線方向の穴を穿設したことによリシースの減径
が均一になることを特徴とするシースヒーターの端子棒
。A terminal rod for a sheath heater, characterized in that the diameter of the sheath is uniformly reduced by boring an axial hole in the inner side of the electrode terminal rod attached to the end of the sheath heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978085033U JPS5841752Y2 (en) | 1978-06-20 | 1978-06-20 | Sheath heater terminal bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978085033U JPS5841752Y2 (en) | 1978-06-20 | 1978-06-20 | Sheath heater terminal bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS552055U JPS552055U (en) | 1980-01-08 |
| JPS5841752Y2 true JPS5841752Y2 (en) | 1983-09-20 |
Family
ID=29008275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978085033U Expired JPS5841752Y2 (en) | 1978-06-20 | 1978-06-20 | Sheath heater terminal bar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5841752Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5449639U (en) * | 1977-09-13 | 1979-04-06 |
-
1978
- 1978-06-20 JP JP1978085033U patent/JPS5841752Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS552055U (en) | 1980-01-08 |
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