JPH0494027A - Connecting structure of electric heater - Google Patents
Connecting structure of electric heaterInfo
- Publication number
- JPH0494027A JPH0494027A JP21095990A JP21095990A JPH0494027A JP H0494027 A JPH0494027 A JP H0494027A JP 21095990 A JP21095990 A JP 21095990A JP 21095990 A JP21095990 A JP 21095990A JP H0494027 A JPH0494027 A JP H0494027A
- Authority
- JP
- Japan
- Prior art keywords
- electric heater
- connecting terminal
- temperature
- fuse
- connection
- 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
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 230000008018 melting Effects 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000012811 non-conductive material Substances 0.000 abstract 1
- 230000020169 heat generation Effects 0.000 description 5
- 239000000155 melt Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 229910001152 Bi alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Fuses (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明はシーズヒータ、ニクロム線ヒータ、セラミッ
クヒータ（正特性サーミスタヒータ）等の電気ヒータの
接続構造に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a connection structure for electric heaters such as sheathed heaters, nichrome wire heaters, and ceramic heaters (positive temperature coefficient thermistor heaters).
〈従来の技術と発明が解決しようとする課題〉従来より
、電気ストーブ等に用いられる電気ヒータは、電線に対
して接続端子を介して接続されているのが通例である。<Prior Art and Problems to be Solved by the Invention> Conventionally, electric heaters used in electric stoves and the like have typically been connected to electric wires via connection terminals.
このような接続端子を用いた接続構造によれば、電気ヒ
ータを長期間使用していると、接続端子のかしめ部ある
いは差込端子の接触状態が悪くなり、接触不良を起こす
ことがある。接続端子の接触不良は当該接続端子の抵抗
値を高め、発熱量を増大させる。よって、接触不良をそ
のままの状態で放置しておくと、電線被覆から発煙、発
火する危険性がある。According to a connection structure using such a connection terminal, if the electric heater is used for a long period of time, the contact condition of the caulked portion of the connection terminal or the plug-in terminal may deteriorate, resulting in poor contact. Poor contact between the connection terminals increases the resistance value of the connection terminals and increases the amount of heat generated. Therefore, if the poor contact is left as it is, there is a risk that the wire coating will emit smoke or catch fire.
そこで、本発明の電気ヒータ接続部の安全構造は、上述
のような問題を解消し、上記接触不良による異常発熱が
生じた場合には、電流をしゃ断し、電線被覆からの発煙
、発火を防止することのできる電気ヒータの接続構造を
提供することを目的としている。Therefore, the safety structure of the electric heater connection part of the present invention solves the above-mentioned problems, and when abnormal heat generation occurs due to the above-mentioned poor contact, the current is cut off and smoke and ignition from the wire coating are prevented. The purpose of the present invention is to provide a connection structure for an electric heater that can
く課題を解決するための手段シ
本発明の電気ヒータの接続構造は、電気ヒータを接続し
た第１の接続端子と、電気ヒータに対する通電用の電線
を接続した第２の接続端子との間に、前記第１の接続端
子と第２の接続端子との少なくとも一方からの熱伝導に
よって溶断する温度ヒユーズを接続したことを特徴とし
ている。Means for Solving the Problems The connection structure for an electric heater of the present invention has a connection structure between a first connection terminal to which an electric heater is connected and a second connection terminal to which an electric wire for energizing the electric heater is connected. , characterized in that a temperature fuse is connected that is blown by heat conduction from at least one of the first connection terminal and the second connection terminal.
く作用〉
本発明の電気ヒータの接続構造によれば、電気ヒータと
電線との間に温度ヒユーズを接続しであるので、通常の
温度では電流が温度ヒユーズを介して流れ□るが、第１
の接続端子と第２の接続端子とのどちらか一方の接続端
子が異常発熱した場合には、温度ヒユーズが溶融、溶断
して電流をしゃ断する。According to the electric heater connection structure of the present invention, since a temperature fuse is connected between the electric heater and the electric wire, current flows through the temperature fuse at normal temperatures.
If either one of the connecting terminal and the second connecting terminal generates abnormal heat, the temperature fuse melts and blows out, cutting off the current.
〈実施例〉
以下、第１図に基づいて本発明の実施例を詳細に説明す
る。<Example> Hereinafter, an example of the present invention will be described in detail based on FIG.
第１図は本発明の電気ヒータの接続構造の一実施例を示
す模式図である。FIG. 1 is a schematic diagram showing an embodiment of an electric heater connection structure of the present invention.
図において、符号２は、電気ヒータ１を接続した第１の
接続端子であり、符号４は、電気ヒータ１に対する通電
用の電線３を接続した第２の接続端子である。In the figure, reference numeral 2 is a first connection terminal to which the electric heater 1 is connected, and reference numeral 4 is a second connection terminal to which an electric wire 3 for supplying electricity to the electric heater 1 is connected.
第１の接続端子２と第２の接続端子４との間には、温度
ヒユーズ５が接続されている。A temperature fuse 5 is connected between the first connection terminal 2 and the second connection terminal 4.
前記温度ヒユーズ５は、ある一定温度以上に温度が上昇
すると、低融点金属等からなる感温部５ｃ（第２図およ
び第３図参照）が溶断することによって回路をしゃ断す
るものであり、非導電性材料からなる耐熱性カバ一部材
５ｄの上面両端部に、導電性材料からなる接続部５ａ、
５ｂが配置され、さらにその上に感温部５ｃか各接続部
５ａ。The temperature fuse 5 is a device that cuts off the circuit by melting the temperature sensing portion 5c (see FIGS. 2 and 3) made of a low melting point metal or the like when the temperature rises above a certain temperature, and is a non-conducting device. At both ends of the upper surface of the heat-resistant cover member 5d made of a conductive material, connection parts 5a made of a conductive material,
5b is arranged, and furthermore, a temperature sensing part 5c or each connection part 5a is arranged thereon.
５ｂと接触する状態で配置され、感温部５ｃと接続部５
ａ ｓおよび感温部５ｃと接続部５ｂ、が各々ねじ５
ｅ、５ｅでカバ一部材５ｄに固定された構成となってい
る。5b, and the temperature sensing part 5c and the connecting part 5
a s, the temperature sensing part 5c, and the connecting part 5b are each screwed 5.
e and 5e are fixed to the cover member 5d.
このような構成の温度ヒユーズ５においては、第１の接
続端子２または第２の接続端子４が過熱した場合に、そ
の熱が接続部５ａもしくは５ｂを介して感温部５ｃに伝
わり、感温部５ｃが溶融、溶断する。In the temperature fuse 5 having such a configuration, when the first connection terminal 2 or the second connection terminal 4 overheats, the heat is transmitted to the temperature sensing portion 5c via the connection portion 5a or 5b, and the temperature sensing portion 5c is heated. The portion 5c is melted and cut.
前記感温部５ｃを構成する低融点金属としては、すず、
鉛、ビスマスの三元合金、あるいはカドミウム、インジ
ウム、亜鉛等を添加したものがあり、溶融温度が８０℃
以下のものから３００℃以上のものまで様々なものか用
いられ、使用目的等に応して適宜選択される。例えば、
ヒータ側接続端子２の温度を１８０℃以下に保ちたい場
合には、温度ヒユーズ５には２００〜２５０”Ｃて感温
部が溶断するものを用いるのが好ましい。The low melting point metal constituting the temperature sensing portion 5c includes tin,
There are ternary alloys of lead and bismuth, or those with additions of cadmium, indium, zinc, etc., and the melting temperature is 80℃.
A variety of materials are used, ranging from those below to temperatures of 300°C or higher, and are appropriately selected depending on the purpose of use. for example,
If it is desired to maintain the temperature of the heater-side connection terminal 2 at 180° C. or lower, it is preferable to use a temperature fuse 5 whose temperature sensing portion melts at 200 to 250”C.
前記接続部５ａは、例えば銅等の熱伝導性の良好な金属
からなり、その形状は差し込みプラグ状となっている。The connecting portion 5a is made of a metal with good thermal conductivity, such as copper, and has a plug-like shape.
前記第１の接続端子２は、第３図に示すように、一端側
が花弁状に分割された筒状をしており、筒状部２ａに温
度ヒユーズ５の接続部５ａを挿入して、筒状部２ａの弾
性力で当該接続部５ａとの接続状態を維持している。As shown in FIG. 3, the first connecting terminal 2 has a cylindrical shape with one end divided into petal shapes, and the connecting portion 5a of the temperature fuse 5 is inserted into the cylindrical portion 2a to open the tube. The state of connection with the connecting portion 5a is maintained by the elastic force of the shaped portion 2a.
他方、第１の接続端子２の他端側には、電気ヒータ１の
接続線１ａがロウ付けされている。On the other hand, the connection wire 1a of the electric heater 1 is brazed to the other end of the first connection terminal 2.
電気ヒータ１としては、例えば、シーズヒータ、ニクロ
ム線ヒータ、セラミックヒータ（正特性サーミスタヒー
タ）等があげられる。Examples of the electric heater 1 include a sheathed heater, a nichrome wire heater, a ceramic heater (positive temperature coefficient thermistor heater), and the like.
第２の接続端子４の一端部には、温度ヒユーズ５の接続
部５ｂがかしめにより接続されていると共に、他端部に
は電線３の被覆部および銅線部がかしめにより接続され
ている。A connecting portion 5b of a temperature fuse 5 is connected to one end of the second connecting terminal 4 by caulking, and a covering portion and a copper wire portion of the electric wire 3 are connected to the other end by caulking.
上述のような構成の電気ヒータの接続構造によれば、第
１の接続端子２あるいは第２の接続端子４に接続不良が
生し、異常発熱を起こした場合には、各接続端子２，４
で生じた熱か温度ヒユーズ５に伝わり、温度ヒユーズ５
の感温部５Ｃが溶解、溶断して電流をしゃ断する。よっ
て、第１の接続端子２および第２の接続端子４か異常発
熱を起こしたとしても、電流が流れなくなるので、電線
被覆が異常発熱によって発煙、発火するおそれがなくな
る。According to the electric heater connection structure configured as described above, if a connection failure occurs in the first connection terminal 2 or the second connection terminal 4 and abnormal heat generation occurs, each connection terminal 2, 4
The heat generated in the temperature fuse 5 is transferred to the temperature fuse 5.
The temperature sensing part 5C melts and cuts off the current. Therefore, even if abnormal heat generation occurs in the first connection terminal 2 and the second connection terminal 4, current will not flow, so there is no risk that the wire coating will smoke or catch fire due to abnormal heat generation.
なお、第２の接続端子４は、上記第１の接続端子２と同
様のものを用いてもよい。Note that the second connection terminal 4 may be the same as the first connection terminal 2 described above.
〈発明の効果〉
以上のように、本発明の電気ヒータの接続構造によれば
、接続端子に接触不良等による異常発熱が生じた場合、
温度ヒユーズが溶解、溶断し、電流をしゃ断するので、
電線被覆から発煙、発火等が発生するのを防止でき、安
全性か向上する。<Effects of the Invention> As described above, according to the electric heater connection structure of the present invention, when abnormal heat generation occurs at the connection terminal due to poor contact, etc.
The temperature fuse melts and blows out, cutting off the current.
It can prevent smoke, ignition, etc. from occurring from the wire sheathing, improving safety.
第１図は本発明の電気ヒータの接続構造の一実施例を示
す模式図、
第２図は温度ヒユーズを示す平面図、
第３図は第１の接続端子と温度ヒータの接続状態をを示
す断面図である。
１・・・電気ヒータ、２・・・第１の側接続端子、４・
・・第２の接続端子、３・・・電線、５・・・温度ヒユ
ーズ
特
許Fig. 1 is a schematic diagram showing an embodiment of the electric heater connection structure of the present invention, Fig. 2 is a plan view showing a temperature fuse, and Fig. 3 shows a connection state between the first connection terminal and the temperature heater. FIG. DESCRIPTION OF SYMBOLS 1... Electric heater, 2... First side connection terminal, 4...
...Second connection terminal, 3...Electric wire, 5...Temperature fuse patent
Claims (1)
と、電気ヒータ（１）に対する通電用の電線（３）を接
続した第２の接続端子（４）との間に、前記第１の接続
端子（２）と第２の接続端子（４）との少なくとも一方
からの熱伝導によつて溶断する温度ヒューズ（５）を接
続したことを特徴とする電気ヒータの接続構造。1. First connection terminal (2) connected to electric heater (1)
and a second connecting terminal (4) to which a current-carrying wire (3) for the electric heater (1) is connected, the first connecting terminal (2) and the second connecting terminal (4) A connection structure for an electric heater, characterized in that a thermal fuse (5) which is blown by heat conduction from at least one of the above is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21095990A JPH0494027A (en) | 1990-08-08 | 1990-08-08 | Connecting structure of electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21095990A JPH0494027A (en) | 1990-08-08 | 1990-08-08 | Connecting structure of electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0494027A true JPH0494027A (en) | 1992-03-26 |
Family
ID=16597947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21095990A Pending JPH0494027A (en) | 1990-08-08 | 1990-08-08 | Connecting structure of electric heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0494027A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445277B1 (en) * | 1999-06-22 | 2002-09-03 | Yazaki Corporation | Safety device of electric circuit and process for producing the same |
-
1990
- 1990-08-08 JP JP21095990A patent/JPH0494027A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445277B1 (en) * | 1999-06-22 | 2002-09-03 | Yazaki Corporation | Safety device of electric circuit and process for producing the same |
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