JP2003142234A - Heater adapter - Google Patents

Heater adapter

Info

Publication number
JP2003142234A
JP2003142234A JP2001341717A JP2001341717A JP2003142234A JP 2003142234 A JP2003142234 A JP 2003142234A JP 2001341717 A JP2001341717 A JP 2001341717A JP 2001341717 A JP2001341717 A JP 2001341717A JP 2003142234 A JP2003142234 A JP 2003142234A
Authority
JP
Japan
Prior art keywords
terminal
heater
sheath
heating wire
exterior pipe
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
Application number
JP2001341717A
Other languages
Japanese (ja)
Other versions
JP3891826B2 (en
Inventor
Fukuji Nagamori
福治 永盛
Yukinobu Yamamoto
幸信 山本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sukegawa Electric Co Ltd
Original Assignee
Sukegawa Electric Co Ltd
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
Application filed by Sukegawa Electric Co Ltd filed Critical Sukegawa Electric Co Ltd
Priority to JP2001341717A priority Critical patent/JP3891826B2/en
Publication of JP2003142234A publication Critical patent/JP2003142234A/en
Application granted granted Critical
Publication of JP3891826B2 publication Critical patent/JP3891826B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Resistance Heating (AREA)

Abstract

PROBLEM TO BE SOLVED: To make it easy to seal an end of an exterior pipe 5, to make it easy and sure to join a heating wire 2 of a sheath heater 1 and a terminal 3, and to make it difficult to cause variation in filling density of an insulating material 7 into an inner part of the exterior pipe 5. SOLUTION: The heater adapter has a heating wire 2 led from an end part of a sheath heater 1 connected with a terminal 3, and an outer side of a joining part of the terminal 3 and the heating wire 2 is covered with an exterior pipe 5. An insulating material 7 are inserted between the exterior pipe 5 and the terminal 3, and a seal member 8 is closed to seal the insulating material 7 in the exterior pipe 5. The seal member 8 uses one made of an elastic material having heat resistance under heating temperature by the sheath heater 1.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、シースヒータのシ
ースの端部から導出した発熱線と棒状の導体からなる端
子とを接続し、この接続部分を絶縁材を介して金属製の
外装パイプで覆ったヒータアダプタに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a heating wire led out from an end of a sheath of a sheath heater and a terminal made of a rod-shaped conductor, and covers the connected portion with an outer pipe made of metal through an insulating material. Heater adapter.

【0002】[0002]

【従来の技術】従来のヒータアダプタは、発熱線を絶縁
状態でシースにより覆ったシースヒータと、このシース
ヒータの端部から導出した発熱線と接続された棒状の導
体からなる端子と、この端子と発熱線との接続部分の外
側を覆う金属製の外装パイプと、この外装パイプと前記
端子及び発熱線の間に挿入された絶縁材と、前記端子の
外側に嵌め込まれて、外装パイプの端子が挿入された端
部側に前記絶縁材を外装パイプの内部に封止するように
嵌合されたシール部材と、外装パイプのシースヒータが
挿入された端部側に前記絶縁材を外装パイプの内部に封
止するように嵌合された封止ブロックとを有する。
2. Description of the Related Art A conventional heater adapter has a sheath heater in which a heating wire is covered with a sheath in an insulating state, a terminal made of a rod-shaped conductor connected to the heating wire led out from the end of the sheath heater, and a heat generation with this terminal. A metal exterior pipe that covers the outside of the connecting portion with the wire, an insulating material inserted between the exterior pipe and the terminal and the heating wire, and a terminal of the exterior pipe inserted by being fitted to the outside of the terminal A sealing member fitted to the inside of the outer pipe to seal the insulating material inside the outer pipe, and the inside of the outer pipe to seal the insulating material at the end of the outer pipe where the sheath heater is inserted. And a sealing block fitted so as to stop.

【0003】このような従来のヒータアダプタでは、シ
ール部材としてエポキシ樹脂が用いられ、外装パイプの
内部にMgO等の絶縁材を充填した後、その外装パイプ
の端部にエポキシ樹脂を詰め込み、これを120℃で4
時間かけて硬化させて外装パイプの端部をシールしてい
た。
In such a conventional heater adapter, an epoxy resin is used as a sealing member, and after filling the inside of the exterior pipe with an insulating material such as MgO, the end portion of the exterior pipe is filled with the epoxy resin. 4 at 120 ° C
It was cured over time to seal the end of the exterior pipe.

【0004】また、発熱線と端子との接合は、端子の端
面に穿った穴にシースの端部から引き出した発熱線を嵌
め込み、一方向において両側からカシメた後、溶接して
いた。さらに、外装パイプの内部には、絶縁材としてM
gOの円筒形のブロックとMgOの粉末とを充填してい
た。
Further, the heating wire and the terminal are joined by fitting the heating wire drawn out from the end of the sheath into a hole formed in the end face of the terminal, crimping from both sides in one direction, and then welding. Furthermore, M is used as an insulating material inside the exterior pipe.
It was filled with a cylindrical block of gO and powder of MgO.

【0005】[0005]

【発明が解決しようとしている課題】前述のように、従
来のヒータアダプタでは、シール部材としてエポキシ樹
脂が使用されており、シール工程において、温度管理と
硬化までの時間管理が必要であった。また、発熱線と端
子の接合には、一方向だけからのカシメではゆるみが生
じるため、カシメの後に溶接で接合をする必要があっ
た。さらに、外装パイプの内部に絶縁材としてMgOを
充填しているが、この絶縁材の充填密度が低いと、耐電
圧が低下する。絶縁材の充填には絶縁材のブロックと併
用して、絶縁材の粉末をバイブレーターを使用して充填
しているが、従来のヒータアダプタでは、シースヒータ
のシースの接合部がテ−パ形状を有しているため、その
テーパの狭くなっている部分への絶縁材の充填密度が低
くなることが多々あった。
As described above, in the conventional heater adapter, the epoxy resin is used as the seal member, and it is necessary to control the temperature and the time until curing in the sealing process. Further, since the loosening occurs in the joining of the heating wire and the terminal only by caulking from one direction, it is necessary to join by welding after caulking. Furthermore, although MgO is filled inside the exterior pipe as an insulating material, if the filling density of this insulating material is low, the withstand voltage decreases. Insulating material is filled with an insulating material by using a vibrator in combination with an insulating material block. In the conventional heater adapter, the sheath heater sheath has a taper joint. Therefore, the packing density of the insulating material in the portion where the taper is narrowed is often low.

【0006】本発明は、このような従来のヒータアダプ
タにおける課題に鑑み、外装パイプの端部のシールが容
易であり、シースヒータの発熱線と端子との接合も容易
で且つ確実であり、さらに外装パイプ内部への絶縁材の
充填密度のばらつきが生じにくいヒータアダプタを提供
することを目的とする。
In view of the above problems in the conventional heater adapter, the present invention facilitates the sealing of the end portion of the exterior pipe, and the joining of the heating wire of the sheath heater and the terminal is easy and reliable. An object of the present invention is to provide a heater adapter in which variations in the packing density of the insulating material inside the pipe do not easily occur.

【0007】[0007]

【課題を解決するための手段】図1に示した符号を引用
しながらヒータアダプタの構成を説明すると、このヒー
タアダプタは、発熱線2を絶縁状態でシース6により覆
ったシースヒータ1と、このシースヒータ1の端部から
導出した発熱線2と接続された棒状の導体からなる端子
3と、この端子3と発熱線2との接続部分の外側を覆う
外装パイプ5と、この外装パイプ5と前記端子3及び発
熱線2の間に挿入され、シースヒータ1による加熱温度
下で耐熱性を有する絶縁材7と、前記端子3の外側に嵌
め込まれて、外装パイプ5の端子3が挿入された端部側
に前記絶縁材7を外装パイプ5の内部に封止するように
嵌合されたシール部材8とを有する。
The structure of the heater adapter will be described with reference to the reference numerals shown in FIG. 1. In this heater adapter, a sheath heater 1 in which a heating wire 2 is covered with a sheath 6 in an insulating state, and a sheath heater 1. A terminal 3 made of a rod-shaped conductor connected to the heating wire 2 led out from the end portion 1, an exterior pipe 5 that covers the outside of the connecting portion between the terminal 3 and the heating wire 2, the exterior pipe 5 and the terminal. 3 and an exothermic wire 2, and an insulating material 7 having heat resistance under the heating temperature of the sheath heater 1, and an end portion of the exterior pipe 5 into which the terminal 3 is inserted, which is fitted to the outside of the terminal 3. And a seal member 8 fitted so as to seal the insulating material 7 inside the exterior pipe 5.

【0008】本発明では、このようなヒータアダプタに
おいて、シール部材8として、シースヒータ1による加
熱温度下で耐熱性を有する弾性部材からなるものを使用
する。特に、このようなシール部材8として、プロピレ
ン系フッ素ゴムからなるものが最適である。特に、プロ
ピレン系フッ素ゴムは、旭化成株式会社製が登録商標
「アフラス」の名称で市販しており、その中での「アフ
ラス150」が最適である。
In the present invention, in such a heater adapter, the seal member 8 is made of an elastic member having heat resistance under the heating temperature of the sheath heater 1. In particular, the seal member 8 made of propylene-based fluororubber is most suitable as the seal member 8. In particular, propylene-based fluororubber is commercially available from Asahi Kasei Corporation under the registered trademark "Aflas", of which "Aflas 150" is most suitable.

【0009】このように、従来のエポキシシールに替え
て弾性部材からなるシール部材8を使用することによ
り、その外装パイプ5の全体をプレスで加圧して減径す
ることにより、エポキシの硬化のような加熱や時間を必
要とすることなく、外装パイプ5のシールを完了する。
またプレスで外装パイプ5を径方向に加圧し、減径する
ことにより、弾性部材からなるシール部材8が中心軸方
向に延びて、外装パイプ5の中の絶縁材7の充填密度を
高めることができる。なおこのとき、シール部材8の外
周面のほぼ中央部分に、周方向にわたって凹状の窪み9
を設けることにより、シール部材8の径方向の圧縮によ
る変形が凹状の窪み11に吸収され、シール部材8の中
心軸方向への延びを小さくすることができる。これによ
り、絶縁材7の過度の充填を防止することができる。
As described above, by using the seal member 8 made of an elastic member in place of the conventional epoxy seal, the entire exterior pipe 5 is pressed by the press to reduce the diameter, so that the epoxy is cured. The sealing of the exterior pipe 5 is completed without requiring special heating or time.
Further, by pressing the outer pipe 5 in the radial direction with a press to reduce the diameter, the seal member 8 made of an elastic member extends in the central axis direction, and the packing density of the insulating material 7 in the outer pipe 5 can be increased. it can. At this time, in the central portion of the outer peripheral surface of the seal member 8, a concave recess 9 is formed in the circumferential direction.
By providing, the deformation due to the radial compression of the seal member 8 is absorbed by the concave recess 11 and the extension of the seal member 8 in the central axis direction can be reduced. As a result, excessive filling of the insulating material 7 can be prevented.

【0010】また、シースヒータ1の端部から導出した
発熱線2を端子3の端面に穿った穴に嵌合し、この端子
3の端部の発熱線2が嵌合された部分を、端子3の外周
の3方向においてそれぞれ両側から加圧し、断面六角形
にカシメる。これにより、カシメだけにより、安定した
接合が行えるので、溶接による接合が不要となり、発熱
線2と端子3との接合が簡単になる。
The heating wire 2 led out from the end of the sheath heater 1 is fitted into the hole formed in the end face of the terminal 3, and the end of the terminal 3 fitted with the heating wire 2 is fitted to the terminal 3 Pressurize from both sides in each of the 3 directions of the outer periphery of the, and crimp into a hexagonal cross section. As a result, since stable joining can be performed only by crimping, joining by welding becomes unnecessary, and joining between the heating wire 2 and the terminal 3 becomes easy.

【0011】さらに、シースヒータ1のシース6の端部
をストレートな直管状のものとすることにより、アダプ
タ全体をプレスでカシメた時にシース口元近傍の絶縁材
の充填密度を高くすることができる。そして、このシー
ス6の端部にセラミック製のリング状の封止ブロック9
を嵌め込んで外装パイプ5内に挿入することにより、耐
電圧性特性を向上させることができる。
Furthermore, by making the end portion of the sheath 6 of the sheath heater 1 straight and straight, it is possible to increase the packing density of the insulating material near the mouth of the sheath when the entire adapter is crimped by a press. Then, a ceramic ring-shaped sealing block 9 is attached to the end of the sheath 6.
By inserting and inserting into the exterior pipe 5, the withstand voltage characteristic can be improved.

【0012】[0012]

【発明の実施の形態】次に、図面を参照しながら、本発
明の実施の形態について、具体的且つ詳細に説明する。
図1に本発明の一実施形態によるヒータアダプタを示し
ており、この図1に示すように、ヒータアダプタは、シ
ースヒータ1と端子3とを接続している。
BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described specifically and in detail with reference to the drawings.
FIG. 1 shows a heater adapter according to an embodiment of the present invention. As shown in FIG. 1, the heater adapter connects a sheath heater 1 and a terminal 3.

【0013】既知の通り、シースヒータ1は、ステンレ
スパイプ状のシース6の中に発熱線2を挿入し、シース
6の中にMgO等の無機絶縁粉末からなる絶縁材(シー
ス6の中に隠れているため図示せず)を充填し、シース
6と発熱線2とを絶縁したものである。このシースヒー
タ1の端部のシース6と絶縁材を除去し、発熱線2の端
部をシース6から導出する。
As is known, in the sheath heater 1, the heating wire 2 is inserted into a stainless pipe-shaped sheath 6, and an insulating material made of an inorganic insulating powder such as MgO (which is hidden in the sheath 6 is inserted into the sheath 6). Therefore, the sheath 6 and the exothermic wire 2 are insulated by being filled with (not shown). The sheath 6 at the end of the sheath heater 1 and the insulating material are removed, and the end of the heating wire 2 is led out from the sheath 6.

【0014】先端部の内径がシースヒータ1のシース6
の外径と等しく、他端部の外径が後に説明する外装パイ
プ5の内径と等しいカラー10を用意する。このカラー
10の径が太い側から発熱線2を導出したシース6の端
部に嵌め込み、カラー10の径が細い先端部分をシース
6の先端に嵌め込んで溶接する。
The inner diameter of the tip portion is the sheath 6 of the sheath heater 1.
A collar 10 having the same outer diameter as the outer diameter of the outer pipe 5 and the outer diameter of the other end equal to the inner diameter of the exterior pipe 5 described later is prepared. The collar 10 is fitted into the end of the sheath 6 where the heating wire 2 is drawn out from the thick diameter side, and the distal end portion of the collar 10 with the small diameter is fitted into the distal end of the sheath 6 and welded.

【0015】さらに、長さ約半分の部分の中心にシース
6の端部から導出した発熱線2と径が等しい通孔を有
し、その他の部分の内径がシース6に溶接したカラー1
0の先端部分の外径と等しい封止ブロック9を用意す
る。この封止ブロック9は窒化ホウ素等のセラミックか
らなり、その外径は、後に説明する外装パイプ5の内径
と等しい。この封止ブロック9をシース6に溶接したカ
ラー10の先端部分に嵌め込むと共に、シース6の端部
から導出した発熱線2を封止ブロック9の通孔に通し、
導出する。
Further, there is a through hole having a diameter equal to that of the heating wire 2 led out from the end of the sheath 6 at the center of the portion having a length of about half, and the inner diameter of the other portion is welded to the sheath 6 to the collar 1.
A sealing block 9 having an outer diameter of the tip portion of 0 is prepared. The sealing block 9 is made of ceramic such as boron nitride, and its outer diameter is equal to the inner diameter of the exterior pipe 5 described later. The sealing block 9 is fitted into the distal end portion of the collar 10 welded to the sheath 6, and the heating wire 2 led out from the end portion of the sheath 6 is passed through the through hole of the sealing block 9,
Derive.

【0016】一方、端子3は、先端にねじ4が切ってあ
るが、このねじ4が切られた先端と反対側の基端の端面
から中心に穴が穿たれている。この穴の径はシース6の
端部から導出した発熱線2の径よりやや大きく、その深
さは、封止ブロック9から導出された発熱線2の突出長
さに等しいかやや深い。
On the other hand, the terminal 3 is provided with a screw 4 at its tip, and a hole is formed at the center from the end face of the base end opposite to the tip where the screw 4 is cut. The diameter of this hole is slightly larger than the diameter of the heating wire 2 led out from the end of the sheath 6, and the depth thereof is equal to or slightly deeper than the protruding length of the heating wire 2 led out from the sealing block 9.

【0017】シース6の端部から導出され、さらに封止
ブロック9から突出した発熱線2の端部を前記端子3の
基端の穴に挿入する。そして、この端子3の発熱線2の
端部が穴に挿入された部分の外周側を120゜間隔の3
方向において両側から加圧し、カシメる。これにより、
図2に示すように、端子3のカシメた部分の断面はほぼ
6角形となり、6つの方向から端子3が挟圧されるた
め、発熱線2と端子3との接合が完全となり、このカシ
メだけで発熱線2と端子3との接合が完了する。
The end of the heating wire 2 which is led out from the end of the sheath 6 and protrudes from the sealing block 9 is inserted into the hole at the base end of the terminal 3. Then, the outer peripheral side of the portion where the end of the heating wire 2 of the terminal 3 is inserted into the hole is separated by 3 at 120 ° intervals.
Press from both sides in the direction and crimp. This allows
As shown in FIG. 2, the crimped portion of the terminal 3 has a substantially hexagonal cross section, and the terminal 3 is pinched from six directions, so that the heating wire 2 and the terminal 3 are completely joined together. Then, the joining of the heating wire 2 and the terminal 3 is completed.

【0018】次に、外径がこの後で説明する外装パイプ
5の内径と等しいか僅かに小さく、また内径が前記端子
3の径と等しいかやや大きなMgO等からなる円筒ブロ
ック状の絶縁材7を端子3及び外装パイプ5の長さに応
じた必要な個数だけ端子3の外側に嵌め込む。最も先の
絶縁材7は、前記封止ブロック9の端面に突き当てる。
必要があるときは、このブロック状の絶縁材7に加え
て、外装パイプ5の中にMgO粉末等からなる粉末状の
絶縁材を充填し、ブロック状の絶縁材7の隙間を埋め
る。
Next, a cylindrical block-shaped insulating material 7 made of MgO or the like having an outer diameter equal to or slightly smaller than the inner diameter of the exterior pipe 5 described later, and an inner diameter equal to or slightly larger than the diameter of the terminal 3. Are fitted to the outside of the terminal 3 by a necessary number according to the lengths of the terminal 3 and the exterior pipe 5. The earliest insulating material 7 abuts on the end surface of the sealing block 9.
When necessary, in addition to the block-shaped insulating material 7, the exterior pipe 5 is filled with a powder-shaped insulating material such as MgO powder to fill the gaps in the block-shaped insulating material 7.

【0019】さらに、この絶縁材7の外側にステンレス
パイプ等からなる外装パイプ5を嵌め込む。この外装パ
イプ5を嵌め込んだ状態で、同外装パイプ5の一端は、
カラー10の端部近くに達しており、そのカラーに溶接
される。また、この外装パイプ5の他端は、端子3の端
部には至らず、この外装パイプ5の他端から端子3のね
じ4の部分が突出している。
Further, the exterior pipe 5 made of a stainless pipe or the like is fitted on the outside of the insulating material 7. With the exterior pipe 5 fitted, one end of the exterior pipe 5 is
It reaches near the end of the collar 10 and is welded to it. The other end of the exterior pipe 5 does not reach the end of the terminal 3, and the screw 4 portion of the terminal 3 projects from the other end of the exterior pipe 5.

【0020】図3に示すような弾性部材からなるシール
部材8を用意する。このシール部材は、シースヒータ1
による加熱温度下で耐熱性を有する弾性部材からなるも
のを使用する。特に、このようなシール部材8として、
プロピレン系フッ素ゴムからなるものが最適である。特
に、プロピレン系フッ素ゴムは、旭化成株式会社製が登
録商標「アフラス」の名称で市販しており、その中での
「アフラス150」が最適である。このプロピレン系フ
ッ素ゴムは、次の化1に示すようなポリマー構造を有し
ている。
A seal member 8 made of an elastic member as shown in FIG. 3 is prepared. This seal member is a sheath heater 1.
An elastic member having heat resistance under heating temperature is used. In particular, as such a seal member 8,
The one made of propylene-based fluororubber is most suitable. In particular, propylene-based fluororubber is commercially available from Asahi Kasei Corporation under the registered trademark "Aflas", of which "Aflas 150" is most suitable. This propylene-based fluororubber has a polymer structure as shown in the following chemical formula 1.

【0021】[0021]

【化1】 [Chemical 1]

【0022】このシール部材8は、その中心軸に沿って
貫通する通孔があり、基本的に円筒形である。その内径
は端子3の径とほぼ等しく、外径は外装パイプ5の内径
とほぼ同じである。外周面の中間部には、その全周にわ
たって部分円筒面からなる凹状の窪み11が設けられて
いる。
The seal member 8 has a through hole penetrating along its central axis and is basically cylindrical. The inner diameter is substantially the same as the diameter of the terminal 3, and the outer diameter is substantially the same as the inner diameter of the exterior pipe 5. In the middle of the outer peripheral surface, a concave recess 11 formed of a partial cylindrical surface is provided over the entire circumference.

【0023】このシール部材8を前記端子3のねじ4を
有する端部側から嵌め込み、さらに外装パイプ5の端部
に嵌め込み、外装パイプ5の端部を閉じる。その後、外
装パイプ5の全体を径方向に加圧し、減径する。これに
より、シール部材8も径方向に圧縮されるため、その分
だけ中心軸方向に寸法を拡大する。このため、シール部
材8が外装パイプ5の内部の絶縁材7を圧縮し、その充
填密度が高められる。但し、シール部材8の径方向の圧
縮による変形が、その凹状の窪み11に吸収され、シー
ル部材8が中心軸方向の延びを小さくすることができ
る。これにより、絶縁材7の過度の充填を防止すること
ができる。
The seal member 8 is fitted into the terminal 3 from the end portion side having the screw 4, and further fitted into the end portion of the exterior pipe 5 to close the end portion of the exterior pipe 5. After that, the entire outer pipe 5 is radially pressed to reduce the diameter. As a result, the seal member 8 is also compressed in the radial direction, so that the size thereof is expanded in the central axis direction. Therefore, the seal member 8 compresses the insulating material 7 inside the exterior pipe 5, and the packing density thereof is increased. However, the deformation due to the radial compression of the seal member 8 is absorbed by the concave recess 11 and the extension of the seal member 8 in the central axis direction can be reduced. As a result, excessive filling of the insulating material 7 can be prevented.

【0024】[0024]

【発明の効果】以上説明した通り、本発明によるヒータ
アダプタでは、従来のエポキシシールに替えて弾性部材
からなるシール部材8を使用することにより、エポキシ
の硬化のような加熱や時間を必要とすることなく、外装
パイプ5のシールを完了する。またプレスで外装パイプ
5を径方向に加圧して減径することにより、弾性部材か
らなるシール部材8が外装パイプ5の中の絶縁材7の充
填密度を高めることができる。なおこのとき、シール部
材8の外周面の凹状の窪み11により、絶縁材7の過度
の充填を防止することができる。
As described above, in the heater adapter according to the present invention, the seal member 8 made of an elastic member is used instead of the conventional epoxy seal, so that heating and time for curing the epoxy are required. Without completing the sealing of the exterior pipe 5. Further, by pressing the outer pipe 5 in the radial direction with a press to reduce the diameter, the sealing member 8 made of an elastic member can increase the packing density of the insulating material 7 in the outer pipe 5. At this time, excessive filling of the insulating material 7 can be prevented by the concave recess 11 on the outer peripheral surface of the seal member 8.

【0025】また、シースヒータ1の端部から導出した
発熱線2を端子3の端面に穿った穴に嵌合した部分で、
端子3の外周の3方向においてそれぞれ両側から加圧
し、断面六角形にカシメることにより、溶接による接合
が不要となり、発熱線2と端子3との接合が簡単にな
る。
Further, at the portion where the heating wire 2 led out from the end of the sheath heater 1 is fitted into the hole formed in the end face of the terminal 3,
By applying pressure from both sides in each of the three directions of the outer periphery of the terminal 3 and crimping to a hexagonal cross section, welding by welding is unnecessary, and the heating wire 2 and the terminal 3 can be easily joined.

【0026】さらに、シースヒータ1のシースの端部を
ストレートな直管状のものとすることにより、絶縁材の
充填密度を高くすることができる。そして、このシース
の端部に嵌め込んだセラミック製のリング状の封止ブロ
ック9により、耐電圧性特性も向上させることができ
る。
Further, by making the end portion of the sheath of the sheath heater 1 straight and straight, the packing density of the insulating material can be increased. The withstand voltage characteristic can also be improved by the ceramic ring-shaped sealing block 9 fitted in the end portion of the sheath.

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

【図1】本発明の一実施形態による端子を一部断面した
ヒータアダプタの縦断側面図である。
FIG. 1 is a vertical sectional side view of a heater adapter with a terminal partially sectioned according to an embodiment of the present invention.

【図2】図1のA−A線拡大断面図である。FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.

【図3】前記実施形態によるヒータアダプタに使用する
シール部材の外装パイプに嵌め込む前の形状の例を示す
縦断側面図である。
FIG. 3 is a vertical cross-sectional side view showing an example of a shape of a seal member used in the heater adapter according to the embodiment before being fitted into an exterior pipe.

【符号の説明】[Explanation of symbols]

1 シースヒータ 2 発熱線 3 端子 5 外装パイプ 6 シース 7 絶縁材 8 シール部材 9 封止ブロック 1 sheath heater 2 exothermic line 3 terminals 5 Exterior pipe 6 sheath 7 insulation 8 Seal member 9 Sealing block

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 発熱線(2)を絶縁状態でシース(6)
により覆ったシースヒータ(1)と、このシースヒータ
(1)の端部から導出した発熱線(2)と接続された棒
状の導体からなる端子(3)と、この端子(3)と発熱
線(2)との接続部分の外側を覆う外装パイプ(5)
と、この外装パイプ(5)と前記端子(3)及び発熱線
(2)の間に挿入され、シースヒータ(1)による加熱
温度下で耐熱性を有する絶縁材(7)と、前記端子
(3)の外側に嵌め込まれて、外装パイプ(5)の端子
(3)が挿入された端部側に前記絶縁材(7)を外装パ
イプ(5)の内部に封止するように嵌合されたシール部
材(8)とを有するヒータアダプタにおいて、シール部
材(8)がシースヒータ(1)による加熱温度下で耐熱
性を有する弾性部材からなることを特徴とするヒータア
ダプタ。
1. A sheath (6) in which the heating wire (2) is insulated.
A sheathed heater (1) covered with a sheathed heater, a terminal (3) made of a rod-shaped conductor connected to the heating wire (2) led out from the end of the sheathed heater (1), the terminal (3) and the heating wire (2). ) Exterior pipe (5) covering the outside of the connection with
An insulating material (7) which is inserted between the exterior pipe (5) and the terminal (3) and the heating wire (2) and has heat resistance under the heating temperature of the sheath heater (1); and the terminal (3). ), The insulating pipe (5) is fitted to the end of the exterior pipe (5) into which the terminal (3) is inserted so as to seal the inside of the exterior pipe (5). A heater adapter having a seal member (8), wherein the seal member (8) is made of an elastic member having heat resistance under a heating temperature of the sheath heater (1).
【請求項2】 シール部材(8)は、外周面のほぼ中央
部分に、周方向にわたって凹状の窪み(11)を有する
ことを特徴とする請求項1に記載のヒータアダプタ。
2. The heater adapter according to claim 1, wherein the seal member (8) has a concave recess (11) in the circumferential direction at a substantially central portion of the outer peripheral surface.
【請求項3】 シースヒータ(1)のシース(6)の端
部から導出した発熱線(2)を端子(3)の端面に穿っ
た穴に嵌合し、この端子(3)の端部の発熱線(2)が
嵌合された部分を、端子(3)の外周の3方向において
それぞれ両側から加圧し、断面ほぼ六角形状にカシメた
ことを特徴とする請求項1または2に記載のヒータアダ
プタ。
3. A heating wire (2) led out from the end of the sheath (6) of the sheath heater (1) is fitted into a hole formed in the end face of the terminal (3), and the end of the terminal (3) is The heater according to claim 1 or 2, wherein the portion fitted with the heating wire (2) is pressed from both sides in the three directions of the outer periphery of the terminal (3) and caulked into a substantially hexagonal cross section. adapter.
【請求項4】 シースヒータ(1)のシース(6)の端
部をストレートな直管状のものとし、このシース(6)
の端部にセラミック製のリング状の封止ブロック(9)
を嵌め込んで外装パイプ(5)内に挿入したことを特徴
とする請求項1〜3の何れかに記載のヒータアダプタ。
4. The sheath (6) of the sheath heater (1) has a straight straight tubular end, and the sheath (6) has a straight tubular shape.
Ceramic ring-shaped sealing block at the end of the (9)
The heater adapter according to any one of claims 1 to 3, wherein the heater adapter is inserted and inserted into the exterior pipe (5).
【請求項5】 シール部材(8)は、プロピレン系フッ
素ゴムからなることを特徴とする請求項1〜4の何れか
に記載のヒータアダプタ。
5. The heater adapter according to claim 1, wherein the seal member (8) is made of propylene fluororubber.
JP2001341717A 2001-11-07 2001-11-07 Heater adapter Expired - Lifetime JP3891826B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001341717A JP3891826B2 (en) 2001-11-07 2001-11-07 Heater adapter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001341717A JP3891826B2 (en) 2001-11-07 2001-11-07 Heater adapter

Publications (2)

Publication Number Publication Date
JP2003142234A true JP2003142234A (en) 2003-05-16
JP3891826B2 JP3891826B2 (en) 2007-03-14

Family

ID=19155697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001341717A Expired - Lifetime JP3891826B2 (en) 2001-11-07 2001-11-07 Heater adapter

Country Status (1)

Country Link
JP (1) JP3891826B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101261995B1 (en) * 2006-02-14 2013-05-08 야마리산교오 가부시기가이샤 Method for connecting micro-heaters and method for manufacturing the micro-heater
JP2014529177A (en) * 2011-10-07 2014-10-30 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイShell Internationale Research Maatschappij Beslotenvennootshap Formation of insulated conductors using a final rolling step after heat treatment
CN108668388A (en) * 2018-06-07 2018-10-16 成都韩力暖通设备有限公司 Connection structure based on PTC carbon heating cables

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53138531A (en) * 1977-05-09 1978-12-04 Hitachi Heating Appliance Co Ltd Preparation of cartridge heater
JPS60117590A (en) * 1983-11-29 1985-06-25 株式会社河合電器製作所 Method of sealing sheathed heater
JPS60150577A (en) * 1984-01-18 1985-08-08 株式会社日立製作所 Microheater
JPS6247985A (en) * 1985-08-26 1987-03-02 株式会社 河合電器製作所 Cartridge heater and manufacture thereof
JPH09148063A (en) * 1995-11-22 1997-06-06 Sharp Corp Heater mounting structure of microwave oven

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53138531A (en) * 1977-05-09 1978-12-04 Hitachi Heating Appliance Co Ltd Preparation of cartridge heater
JPS60117590A (en) * 1983-11-29 1985-06-25 株式会社河合電器製作所 Method of sealing sheathed heater
JPS60150577A (en) * 1984-01-18 1985-08-08 株式会社日立製作所 Microheater
JPS6247985A (en) * 1985-08-26 1987-03-02 株式会社 河合電器製作所 Cartridge heater and manufacture thereof
JPH09148063A (en) * 1995-11-22 1997-06-06 Sharp Corp Heater mounting structure of microwave oven

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101261995B1 (en) * 2006-02-14 2013-05-08 야마리산교오 가부시기가이샤 Method for connecting micro-heaters and method for manufacturing the micro-heater
JP2014529177A (en) * 2011-10-07 2014-10-30 シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイShell Internationale Research Maatschappij Beslotenvennootshap Formation of insulated conductors using a final rolling step after heat treatment
CN108668388A (en) * 2018-06-07 2018-10-16 成都韩力暖通设备有限公司 Connection structure based on PTC carbon heating cables

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