JPH0460288B2 - - Google Patents
Info
- Publication number
- JPH0460288B2 JPH0460288B2 JP10666587A JP10666587A JPH0460288B2 JP H0460288 B2 JPH0460288 B2 JP H0460288B2 JP 10666587 A JP10666587 A JP 10666587A JP 10666587 A JP10666587 A JP 10666587A JP H0460288 B2 JPH0460288 B2 JP H0460288B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- contact plate
- temperature fuse
- thermostat
- operating
- 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
- 230000002265 prevention Effects 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 28
- 229910052742 iron Inorganic materials 0.000 description 14
- 230000007257 malfunction Effects 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Thermally Actuated Switches (AREA)
- Fuses (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は電気アイロンのようなヒーターを有す
る熱機器、あるいは、その他、熱を発生する機器
における温度過昇防止装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for preventing excessive temperature rise in a thermal appliance having a heater, such as an electric iron, or other appliances that generate heat.
従来の技術
一般に電気機器において、その温度を調節する
手段としてはバイメタルを作動要素とするサーモ
スタツトが用いられている。ところで前記サーモ
スタツトはメカニカルなものであることから、動
作不良、あるいは接点の焼付などの故障が生じる
ことがあり、温度過昇によつて機器を焼損するお
それがある。この温度過昇を防止する手段とし
て、温度ヒユーズが用いられ、温度過昇時に前記
温度ヒユーズが溶断し、たとえばヒータ回路を断
つて安全をはかるようにしている。2. Description of the Related Art Generally, in electrical equipment, a thermostat having a bimetal as an operating element is used as a means for regulating the temperature thereof. However, since the thermostat is mechanical, failures such as malfunction or seizure of contacts may occur, and there is a risk that the device may be burnt out due to excessive temperature rise. As a means for preventing this excessive temperature rise, a temperature fuse is used, and when the temperature rises excessively, the temperature fuse blows out, for example, to cut off the heater circuit to ensure safety.
第４図は電気機器としてアイロンを例にしたも
のであり、アルミニユウムなどの金属よりなるベ
ース１には、これを加熱するためのヒータ２が組
み込まれており、このヒータ２の通電回路中には
バイメタル３によつて作動させられるサーモスタ
ツト４を設け、このサーモスタツト４により前記
ベース１の表面温度を設定値に保つようにしてい
る。また、温度過昇防止手段として、前記ヒータ
２の通電回路中に温度ヒユーズ５を設けている。
なお、図中の６はサーモスタツト調節部材を示
す。また、第５図は電気回路を示す。 Figure 4 shows an iron as an example of an electric device.A base 1 made of metal such as aluminum has a heater 2 built in to heat it. A thermostat 4 actuated by a bimetal 3 is provided, which maintains the surface temperature of the base 1 at a set value. Further, a temperature fuse 5 is provided in the energizing circuit of the heater 2 as a means for preventing excessive temperature rise.
Note that 6 in the figure indicates a thermostat adjustment member. Moreover, FIG. 5 shows an electric circuit.
前記温度ヒユーズ５は管体の内部に結晶性有機
化合物または易融合金よりなる感温素子を封入
し、温度過昇時に前記感温素子が溶融して通電回
路を開く動作をする。 The temperature fuse 5 has a temperature sensing element made of a crystalline organic compound or an easily fusible metal sealed inside a tube body, and when the temperature rises excessively, the temperature sensing element melts and opens an energizing circuit.
発明が解決しようとする問題点
ところで、前記温度ヒユーズ５における感温素
子の融点は最大約220℃程度であり、直接ベース
１に受熱関係をもたせると通常使用時において余
裕度がなく、早切れをおこす問題がある。したが
つて誤動作を少なくするため、余裕度が大きく取
れる位置、すなわちベースカバー７の裏面また
は、ベース１の熱を直接に受けにくい空間に位置
せざるを得なかつた。このような温度ヒユーズ５
の配置は受熱感度が悪く、温度ヒユーズ５の作動
時のベース１の最大温度は異常な高温となり、ベ
ース１の溶融や、ヒータ２の絶縁破壊、火災、感
電等の重大事故につながるおそれがあつた。ま
た、アイロンの場合においてはその使用状態、す
なわち、水平した状態と立てて据え置く場合に内
部の温度上昇が異り、早切れ等の誤動作をおこし
やすいという問題がある。Problems to be Solved by the Invention By the way, the maximum melting point of the temperature sensing element in the temperature fuse 5 is about 220°C, and if the base 1 is directly connected to heat receiving, there will be no margin during normal use, and it will be difficult to blow it out prematurely. There is a problem that arises. Therefore, in order to reduce malfunctions, it has been necessary to locate it in a position where there is a large degree of margin, that is, on the back side of the base cover 7 or in a space where it is difficult to receive the heat of the base 1 directly. Such temperature fuse 5
This arrangement has poor heat receiving sensitivity, and the maximum temperature of the base 1 when the temperature fuse 5 is activated is abnormally high, which may lead to melting of the base 1, dielectric breakdown of the heater 2, fire, electric shock, and other serious accidents. Ta. Further, in the case of an iron, there is a problem in that the temperature rise inside the iron differs depending on its use condition, that is, when it is placed horizontally and when it is placed upright, and it is likely to cause malfunctions such as premature cutting.
また、前記サーモスタツトと、過昇防止用のス
イツチを個々に組立て、かつ、取付けることは組
立が面倒であり、部品点数も多くなるという問題
がある。 Furthermore, it is troublesome to assemble and attach the thermostat and overheat prevention switch individually, and there are problems in that the number of parts increases.
そこで、本発明は前記問題に留意し、機器の温
度過昇を速やかにキヤツチし、正確に作動して安
全性および信頼性を高めるとともに、組立性のよ
い温度過昇防止装置を提供することを目的とする
ものである。 Therefore, the present invention takes the above-mentioned problems into consideration, and aims to provide an overheat prevention device that quickly catches the overheating of equipment, operates accurately, improves safety and reliability, and is easy to assemble. This is the purpose.
問題点を解決するための手段
上記問題点を解決するため本発明は、一端に接
点を有し、かつ他端をターミナル台に固着した固
定接点板と一端に操作部を延設し、この操作部に
前記固定接点板と対応する位置に接点を有し、か
つ他端をターミナル台に固着した操作接点板を有
するサーモスタツトと、このサーモスタツトと電
気的に直列に接続した温度過昇防止用の温度ヒユ
ーズを備え、この温度ヒユーズの一端を操作接点
板に固着して、この操作接点板下方に位置するよ
う取付けた温度ヒユーズと前記サーモスタツトと
一体に形成したものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes a fixed contact plate having a contact at one end and fixed to a terminal block at the other end, and an operating section extending from one end. A thermostat having an operating contact plate having a contact at a position corresponding to the fixed contact plate and the other end fixed to a terminal block, and a temperature over-rise prevention thermostat electrically connected in series with the thermostat. One end of the temperature fuse is fixed to the operating contact plate, and the thermostat is integrally formed with the temperature fuse attached so as to be located below the operating contact plate.
作 用
この技術的手段による作用は次のようになる。
すなわち、ベースからの輻射熱を温度ヒユーズが
受けるとともに、操作接点板も輻射熱を受けその
一部は反射し、操作接点板下方にある温度ヒユー
ズに受熱される。このためベースと操作接点板間
に位置する温度ヒユーズの熱応答性が向上し、温
度抑制・温度過昇の防止ができるとともに、サー
モスタツトおよび温度ヒユーズの組立性がよくな
るものである。Effect The effect of this technical means is as follows.
That is, the temperature fuse receives radiant heat from the base, and the operating contact plate also receives radiant heat, a portion of which is reflected and is received by the temperature fuse located below the operating contact plate. This improves the thermal response of the temperature fuse located between the base and the operating contact plate, suppresses the temperature and prevents excessive temperature rise, and improves the ease of assembling the thermostat and the temperature fuse.
実施例
以下本発明の一実施例を第１図〜第３図にもと
づき説明する。Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
図において、８はアイロンのベースであり、ア
ルミダイカストよりなり、シーズ型のヒータ（図
示せず）を埋設してあり、前記ヒータにより所要
の温度に加熱されるようになつている。 In the figure, reference numeral 8 denotes the base of the iron, which is made of die-cast aluminum and has a sheath-type heater (not shown) embedded therein, and is heated to a desired temperature by the heater.
前記ベース８とカバー１０の間に形成される空
室１１には温度制御用のサーモスタツト１２と温
度ヒユーズ１３とが一体化された構成体が配設さ
れている。前記サーモスタツト１２はバイメタル
１４と、このバイメタル１４によつて開閉される
接点１５と、一つの接点１５を持つステンレス鋼
等よりなる固定接点板１６および、バイメタル１
４を結合したステンレス鋼等よりなる操作接点板
１７よりなり、一方の固定接点板１６をセラミツ
ク等の絶縁材よりなる取付台１８に取付けてい
る。前記操作接点板１７には一体に延設された操
作部１９が設けてあり、その長辺部１９ａの先端
には絶縁碍子２０を固着している。２１は絶縁碍
子２０に一端が嵌入された作動棒で、この作動棒
２１の他端には、つまみ（図示せず）等の手動操
作手段が取付けられており、このつまみの回動に
より作動棒２１を介して操作部１９を上下させる
ように構成している。また温度ヒユーズ１３は管
体の内部に結晶性有機化合物または易融合金より
なる感温素子を封入し、温度過昇時に感温素子が
溶融して通電回路を開く動作をするタイプ等であ
り、この温度ヒユーズ１３は前記操作接点板１７
の操作部１９の長辺部１９ａの下方で、前記絶縁
碍子２０に近接し、しかも長辺部１９ａの長手方
向に沿つて取り付けられている。この温度ヒユー
ズ１３の他端は、前記取付台１８に取り付けられ
たリード板２２に固着されている。したがつてサ
ーモスタツト１２と温度ヒユーズ１３が直列に接
続された構成となつている。 A structure in which a thermostat 12 for temperature control and a temperature fuse 13 are integrated is disposed in a cavity 11 formed between the base 8 and the cover 10. The thermostat 12 includes a bimetal 14, a contact 15 that is opened and closed by the bimetal 14, a fixed contact plate 16 made of stainless steel or the like having one contact 15, and a bimetal 1
One fixed contact plate 16 is attached to a mounting base 18 made of an insulating material such as ceramic. The operation contact plate 17 is provided with an integrally extending operation portion 19, and an insulator 20 is fixed to the tip of the long side portion 19a. Reference numeral 21 denotes an actuating rod with one end fitted into the insulator 20. A manual operating means such as a knob (not shown) is attached to the other end of the actuating rod 21. Rotation of this knob causes the actuating rod to move. The operating section 19 is configured to be moved up and down via the handle 21. The temperature fuse 13 is of a type in which a temperature sensing element made of a crystalline organic compound or an easily fusible metal is sealed inside the tube, and when the temperature rises, the temperature sensing element melts and opens a current-carrying circuit. This temperature fuse 13 is connected to the operating contact plate 17.
It is attached below the long side portion 19a of the operating portion 19, close to the insulator 20, and along the longitudinal direction of the long side portion 19a. The other end of the temperature fuse 13 is fixed to a lead plate 22 attached to the mounting base 18. Therefore, the thermostat 12 and the temperature fuse 13 are connected in series.
つぎに上記構成の温度過昇防止装置の動作につ
いて説明する。温度ヒユーズ１３は通常のアイロ
ンの使用温度では溶融しないようになつている。
したがつて通常のアイロンの使用状態では、温度
ヒユーズ１３は導通状態にあり、ヒータの通電回
路は閉じられている。そして温度調節はサーモス
タツト１２の開閉によつて行なう。 Next, the operation of the overtemperature rise prevention device having the above structure will be explained. The temperature fuse 13 is designed not to melt at normal iron operating temperatures.
Therefore, under normal ironing conditions, the temperature fuse 13 is in a conductive state and the heater's energizing circuit is closed. The temperature is adjusted by opening and closing the thermostat 12.
ここでサーモスタツト１２が故障してその接点
が閉じた状態が続き、ベース８の温度が異常に高
くなると、ベース８からの放熱が直接温度ヒユー
ズ１３に与えられるとともに、操作接点板１７の
反射熱が温度ヒユーズ１３に与えられさらに、電
流は操作接点板１７を流れて温度ヒユーズ１３に
流れるがこの時、操作接点板１７はステンレス鋼
等であるため電流により発熱しこの熱も温度ヒユ
ーズ１３に与えられる。そしてついには温度ヒユ
ーズ１３の溶融温度に達つし感温素子が溶融して
通電回路を開き、ヒータへの通電を断ち、その安
全をはかる。 If the thermostat 12 fails and its contacts remain closed and the temperature of the base 8 becomes abnormally high, the heat radiated from the base 8 will be directly applied to the temperature fuse 13, and the heat reflected from the operation contact plate 17 will be is applied to the temperature fuse 13, and the current flows through the operating contact plate 17 to the temperature fuse 13. At this time, since the operating contact plate 17 is made of stainless steel or the like, the current generates heat, and this heat is also applied to the temperature fuse 13. It will be done. Finally, the melting temperature of the temperature fuse 13 is reached and the temperature sensing element melts, opening the energizing circuit and cutting off the energization to the heater to ensure its safety.
温度制御はサーモスタツト１２で行ない、温度
過昇防止は温度ヒユーズ１３で行なうものであ
り、上記実施例の温度過昇防止装置は温度ヒユー
ズ１３へは、ベース８から放熱、操作接点板１７
の反射熱及び自己発熱による輻射熱が与えられる
ため、確実な動作が得られ、その安全性が向上す
る。 Temperature control is carried out by a thermostat 12, and temperature overrise prevention is carried out by a temperature fuse 13.
Since reflected heat and radiant heat generated by self-heating are provided, reliable operation is obtained and safety is improved.
特に、前記温度過昇防止用の温度ヒユーズ１３
が、操作接点板１７の下方長手方向に沿つて、取
りつけられ、前記サーモスタツト１２と一体に組
み合わされている。したがつて組立が容易になる
とともに、取付も簡単になり、サーモスタツト１
２の取付けおよび可動範囲内で形成され電気的絶
縁距離を確保しつつスペースも小さくすることが
できる。 In particular, the temperature fuse 13 for preventing excessive temperature rise
is attached along the lower longitudinal direction of the operation contact plate 17 and is combined integrally with the thermostat 12. Therefore, it is easy to assemble and install, and the thermostat 1
2 within the mounting and movable range, the space can be reduced while ensuring electrical insulation distance.
また一般的なアイロンにおいては、アイロンの
後部には電気配線を、前部には操作部及びスチー
ム発生装置が設けてあり本発明のように温度ヒユ
ーズ１３を操作部に近接させることにより、連続
スチーム発生時のようにヒータに連続的に通電さ
れても、アイロンの前部にあるスチーム発生装置
付近は、あまり温度が上昇しないこのため温度ヒ
ユーズ１３の余裕温度を十分に取ることが可能で
ある。 Further, in a general iron, electric wiring is provided at the rear of the iron, and an operating section and a steam generator are provided at the front.By placing the temperature fuse 13 close to the operating section as in the present invention, continuous steam is Even if the heater is continuously energized as at the time of occurrence, the temperature near the steam generator at the front of the iron does not rise much, so it is possible to maintain a sufficient temperature margin for the temperature fuse 13.
なお前記実施例において、機器としてアイロン
を挙げたが、前記機器はアイロン以外に電熱調理
器、電気ストーブなど、電熱機器としてもよい。
また、ベース８は金属以外にカバー等の電気絶縁
物であつてもよい。 In the above embodiments, an iron is used as the device, but the device may be an electric heating device other than the iron, such as an electric cooker or an electric stove.
Further, the base 8 may be made of an electrically insulating material such as a cover other than metal.
発明の効果
前記実施例の説明より明らかなように、本発明
の温度過昇防止装置は、サーモスタツトで温度制
御をするとともに、所定の異常温度に達つしたと
き温度ヒユーズが溶融し、通電回路を開く構成で
あることから、温度過昇防止装置として誤動作な
く動作し、安全性信頼性の高い機器を提供できる
ものである。また、温度ヒユーズはベースの輻射
熱、操作接点板の反射熱と自己発熱を受けるため
受熱関係が良好であり、温度ヒユーズはサーモス
タツトと一体化され、その組立・取付が容易にな
り、部品点数も少くなり、その取付スペースも小
さくてすむなどの利点を有する。Effects of the Invention As is clear from the description of the embodiments described above, the overtemperature rise prevention device of the present invention uses a thermostat to control the temperature, and when a predetermined abnormal temperature is reached, the temperature fuse melts and the current-carrying circuit is shut off. Since it has an open configuration, it operates without malfunction as an overtemperature rise prevention device, and can provide a highly safe and reliable device. In addition, the temperature fuse receives radiant heat from the base, reflected heat from the operation contact plate, and self-heating, so it has a good heat receiving relationship.The temperature fuse is integrated with the thermostat, making assembly and installation easier, and reducing the number of parts. It has the advantage that the installation space is small.
第１図は本発明の一実施例の温度過昇防止装置
を備えたアイロンの要部断面図、第２図はサーモ
スタツトおよび温度ヒユーズの平面図、第３図は
同側面図、第４図は従来の温度過昇防止装置アイ
ロンの断面図、第５図はその電気回路図である。
８……アイロンのベース、１２……サーモスタ
ツト、１３……温度ヒユーズ、１６……固定接点
板、１７……操作接点板、１８……取付台。
Fig. 1 is a sectional view of essential parts of an iron equipped with an overtemperature rise prevention device according to an embodiment of the present invention, Fig. 2 is a plan view of a thermostat and temperature fuse, Fig. 3 is a side view of the same, and Fig. 4 5 is a sectional view of a conventional overtemperature rise prevention iron, and FIG. 5 is an electric circuit diagram thereof. 8...Base of iron, 12...Thermostat, 13...Temperature fuse, 16...Fixed contact plate, 17...Operation contact plate, 18...Mounting stand.
Claims (1)
に固着した固定接点板と、一端に操作部を延設
し、この操作部に前記固定接点板と対応する位置
に接点を有し、かつ他端をターミナル台に固着し
た操作接点板を有するサーモスタツトと、このサ
ーモスタツトと電気的に直列に接続した温度過昇
防止用の温度ヒユーズを備え、この温度ヒユーズ
の一端を操作接点板に固着して、この操作接点板
下方に位置するよう取付けた温度ヒユーズと前記
サーモスタツトと一体に形成した温度過昇防止装
置。 ２ 温度ヒユーズは操作接点板の操作部に近接す
る位置とした特許請求の範囲第１項記載の温度過
昇防止装置。 ３ 温度ヒユーズは操作接点板の長手方向に沿つ
て取付けられた特許請求の範囲第１項記載の温度
過昇防止装置。[Scope of Claims] 1. A fixed contact plate having a contact at one end and fixed to a terminal block at the other end, an operating section extending from one end, and a position corresponding to the fixed contact plate on the operating section. A thermostat having an operation contact plate having contacts and the other end fixed to a terminal block, and a temperature fuse for preventing excessive temperature rise electrically connected in series with this thermostat, one end of this temperature fuse. An overtemperature rise prevention device is formed integrally with the thermostat and a temperature fuse which is fixed to the operating contact plate and positioned below the operating contact plate. 2. The overtemperature rise prevention device according to claim 1, wherein the temperature fuse is located close to the operating portion of the operating contact plate. 3. The overtemperature rise prevention device according to claim 1, wherein the temperature fuse is installed along the longitudinal direction of the operation contact plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10666587A JPS63271840A (en) | 1987-04-30 | 1987-04-30 | Overheat preventive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10666587A JPS63271840A (en) | 1987-04-30 | 1987-04-30 | Overheat preventive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63271840A JPS63271840A (en) | 1988-11-09 |
| JPH0460288B2 true JPH0460288B2 (en) | 1992-09-25 |
Family
ID=14439374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10666587A Granted JPS63271840A (en) | 1987-04-30 | 1987-04-30 | Overheat preventive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63271840A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04239910A (en) * | 1991-01-23 | 1992-08-27 | Nec Corp | Method and device for multi-input maximum value arithmetic operation |
| JPH04111138U (en) * | 1991-03-14 | 1992-09-28 | 繁孝 三谷 | thermostat |
-
1987
- 1987-04-30 JP JP10666587A patent/JPS63271840A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63271840A (en) | 1988-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 15 Free format text: PAYMENT UNTIL: 20070925 |