JPH029290Y2

JPH029290Y2 -

Info

Publication number: JPH029290Y2
Application number: JP8912885U
Authority: JP
Priority date: 1985-06-13
Filing date: 1985-06-13
Publication date: 1990-03-07
Also published as: JPS61205314U

Description

[Detailed explanation of the idea]

〔産業上の利用分野〕本考案は矢倉ゴタツ等の電気コタツの温度設定
をコントロールする強度切換回路に関するもので
ある。〔従来の技術〕矢倉コタツのような電気コタツでは一般に電源
コードの途中に中間スイツチが設けられているが
最近の新らしい電気コタツでは該中間スイツチの
位置で電源のオン・オフだけでなく設定温度の調
節ができるようにして操作性を改善している。そ
の場合従来ではトライアツクまたはサイリスタ等
の交流電源制御素子よりなる所謂電子コントロー
ラを設け無段階調節を可能としたものがあるが、
その場合コストが高い欠点がある。また、「切」
と「弱」と「中」と「強」の有段階の設定ができ
るようにするものでは第２図に例示したような強
度切換回路が周知であつた。この回路について簡
単に説明すると、図中、１は交流電源の差込プラ
グ、２は第１スイツチ２Ａ、第２スイツチ２Ｂ、
第３スイツチ２Ｃよりなる強度設定用の切換スイ
ツチ、４はコタツ本体と該切換スイツチとを着脱
自在に継ぐ４Ａ，４Ｂ，４Ｃの３端子よりなる連
結プラグである。連結プラグ４の端子４Ａは差込
プラグ１と常時導通している。また差込プラグ１
の他方は切換スイツチ２の各スイツチ２Ａ，２
Ｂ，２Ｃの一端にコモンに接続され、該第１スイ
ツチ２Ａの二次側は連結プラグ４の端子４Ｂに、
第２スイツチ２Ｂの二次側は連結プラグ４の端子
４Ｃに夫々接続されている。また、第３スイツチ
２Ｃの二次側はダイオード３を介在させて端子２
Ｂの二次側に接続してある。コタツ本体中には温
度ヒユーズ５と、フアンモータ６と、二系統の赤
外線ヒータ７，８と、サーモスタツト９と、セメ
ント型抵抗器１０とが次のように配線されてい
る。即ち、フアンモータ６と赤外線ヒータ７を並
列に接続しその一端に温度ヒユーズ５を直列に継
いで端子４Ａに連結すると共に他端は端子４Ｂに
連結し、赤外線ヒータ８にサーモスタツト９を直
列に継いだものを前記赤外線ヒータ７と並列に継
ぐ一方、抵抗器１０を温度ヒユーズ５と端子４Ｃ
間に配設してなるもので、切換スイツチ２の各接
点を次表のように動作させることにより「切」、
「弱」、「中」、「強」の各切換ができるものである。 [Industrial Application Field] The present invention relates to an intensity switching circuit for controlling the temperature setting of electric kotatsu such as Yagura Gotatsu. [Conventional technology] Electric kotatsu such as the Yagura kotatsu generally have an intermediate switch in the middle of the power cord, but in recent new electric kotatsu, the position of the intermediate switch not only turns the power on and off, but also controls the temperature. This improves operability by making it possible to adjust the In this case, conventionally, a so-called electronic controller consisting of an AC power control element such as a triax or thyristor has been installed to enable stepless adjustment.
In that case, there is a drawback that the cost is high. Also, "cut"
An intensity switching circuit such as the one illustrated in FIG. 2 is well known as a device that allows stepwise setting of "weak,""medium," and "strong." To briefly explain this circuit, in the figure, 1 is an AC power plug, 2 is a first switch 2A, a second switch 2B,
A third switch 2C is a changeover switch for setting strength, and 4 is a connection plug having three terminals 4A, 4B, and 4C that detachably connects the kotatsu body to the changeover switch. The terminal 4A of the connection plug 4 is always electrically connected to the insertion plug 1. Also, plug 1
The other side is each switch 2A, 2 of the changeover switch 2.
B, 2C are commonly connected to one end, and the secondary side of the first switch 2A is connected to the terminal 4B of the connecting plug 4.
The secondary side of the second switch 2B is connected to the terminal 4C of the connection plug 4, respectively. Further, the secondary side of the third switch 2C is connected to the terminal 2 with the diode 3 interposed.
It is connected to the secondary side of B. A temperature fuse 5, a fan motor 6, two systems of infrared heaters 7 and 8, a thermostat 9, and a cement type resistor 10 are wired in the kotatsu body as follows. That is, a fan motor 6 and an infrared heater 7 are connected in parallel, a temperature fuse 5 is connected in series to one end thereof, and the other end is connected to a terminal 4B, and a thermostat 9 is connected in series to the infrared heater 8. The connected part is connected in parallel with the infrared heater 7, while the resistor 10 is connected to the temperature fuse 5 and the terminal 4C.
By operating each contact of the changeover switch 2 as shown in the table below, it can be turned off and
It can be switched between "weak", "medium" and "strong".

[Purpose of invention]

そこで本考案は短絡抵抗を用いることなく
「弱」、「中」、「強」の切換ができ、「弱」、「中」
の
設定によつて節電できる電気コタツの強度切換回
路を提供しようとするものである。〔目的を達成するための手段〕その目的を達成するため、本考案の強度切換回
路は、赤外線ヒータの電源回路に第１サーモスタ
ツトと「弱」設定用の第１スイツチとを連結プラ
グを介して直列に接続してなる第１電源供給路を
設けると共に、第２サーモスタツトと「強」設定
用の第２スイツチとを連結プラグを介して直列に
接続してなる第２電源供給路を前記第１電源供給
路と並列に形成し、第２サーモスタツトの作動温
度は第１サーモスタツトの作動温度より高く設定
し、ダイオードを直列に接続した「中」設定用の
第３スイツチを前記第２スイツチに対し並列とな
るように接続してなることを特徴とするものであ
る。〔実施例〕第１図では前述した第２図の従来の回路と同じ
配線がされた同一部分は同一符号で示した。即
ち、差込プラグ１、切換スイツチ２、ダイオード
３、連結プラグ４の各配線は第２図の従来例と同
様で、該ダイオード３は第３スイツチ２Ｃの二次
側に直列に接続しこれを第２スイツチ２Ｂに対し
並列となるように接続している。しかして、本考案ではコタツ本体中の赤外線ラ
ンプ１１と赤外線ランプ１２とは並列に接続し、
その一端は温度ヒユーズ１３を直列に介在させて
端子４Ａに接続すると共に、他端は端子４Ｂに接
続された第１サーモスタツト１４と端子４Ｃに接
続された第２サーモスタツト１５とに分岐接続す
る。またフアンモータ１６は端子４Ｂと温度ヒユ
ーズ１３の二次側に接続する。第１サーモスタツ
ト１４は作動温度が60℃に設定され、第２サーモ
スタツト１５は作動温度が85℃に設定され、それ
ぞれその作動温度を超すと接点が開き作動温度以
下にてその接点が閉じられる。かくして第１サー
モスタツト１４と第１スイツチ２Ａとは赤外線ヒ
ータ１１，１２の電源回路に連結プラグ端子４Ｂ
を介して直列に接続され第１電源供給路１７を形
成する。また、第２サーモスタツト１５と第２ス
イツチ２Ｂとは連結プラグ端子４Ｃを介して直列
に接続してなる第２電源供給路１８を前記第１電
源供給路１７と並列に形成する。このように構成された電気コタツの強度切換回
路では、切換スイツチ２の第１〜第３スイツチ２
Ａ，２Ｂ，２Ｃを各々次表のように動作させるこ
とにより強度設定ができる。 Therefore, the present invention can switch between "weak", "medium" and "strong" without using a short-circuit resistor.
The purpose is to provide an intensity switching circuit for an electric kotatsu that can save power by changing the settings. [Means for achieving the object] In order to achieve the object, the intensity switching circuit of the present invention connects the first thermostat and the first switch for "weak" setting to the power circuit of the infrared heater through a plug. A first power supply path is provided in which a second thermostat and a second switch for "strong" setting are connected in series through a connecting plug. The second thermostat is formed in parallel with the first power supply path, and the operating temperature of the second thermostat is set higher than the operating temperature of the first thermostat. It is characterized by being connected in parallel to the switch. [Embodiment] In FIG. 1, the same parts with the same wiring as in the conventional circuit shown in FIG. 2 described above are indicated by the same reference numerals. That is, the wiring of the plug 1, changeover switch 2, diode 3, and connection plug 4 is the same as the conventional example shown in FIG. 2, and the diode 3 is connected in series to the secondary side of the third switch 2C. It is connected in parallel to the second switch 2B. Therefore, in the present invention, the infrared lamp 11 and the infrared lamp 12 in the kotatsu body are connected in parallel,
One end thereof is connected to the terminal 4A with a temperature fuse 13 interposed in series, and the other end is branch-connected to a first thermostat 14 connected to the terminal 4B and a second thermostat 15 connected to the terminal 4C. . Further, the fan motor 16 is connected to the terminal 4B and the secondary side of the temperature fuse 13. The operating temperature of the first thermostat 14 is set to 60°C, and the operating temperature of the second thermostat 15 is set to 85°C, and when the operating temperature is exceeded, the contact opens and when the operating temperature is below, the contact is closed. . Thus, the first thermostat 14 and the first switch 2A are connected to the power circuit of the infrared heaters 11 and 12 through the plug terminal 4B.
The first power supply path 17 is formed by connecting the first power supply path 17 in series. Further, the second thermostat 15 and the second switch 2B are connected in series via the connection plug terminal 4C, forming a second power supply path 18 in parallel with the first power supply path 17. In the electric kotatsu intensity switching circuit configured in this way, the first to third switches 2 of the changeover switches 2
The intensity can be set by operating A, 2B, and 2C as shown in the following table.

[Effect of idea]

「弱」および「中」に設定したとき余計な電流
を流すことなく所期の温度コントロールができる
ので節電になると共に、故障がなく、強度切換回
路を安価に提供できるなど顕著な効果がある。 When set to ``weak'' and ``medium'', the temperature can be controlled as desired without passing any unnecessary current, resulting in power savings, as well as being trouble-free and providing a strength switching circuit at a low cost.

[Brief explanation of the drawing]

第１図は本考案に係る電気コタツの強度切換回
路の回路図である。第２図は従来の回路図であ
る。２……切換スイツチ、２Ａ……第１スイツチ、
２Ｂ……第２スイツチ、２Ｃ……第３スイツチ、
３……ダイオード、４……連結プラグ、１１，１
２……赤外線ランプ、１４……第１サーモスタツ
ト、１５……第２サーモスタツト、１７……第１
電源供給路、１８……第２電源供給路。 FIG. 1 is a circuit diagram of an electric kotatsu intensity switching circuit according to the present invention. FIG. 2 is a conventional circuit diagram. 2... Selector switch, 2A... First switch,
2B...Second switch, 2C...Third switch,
3...Diode, 4...Connection plug, 11,1
2... Infrared lamp, 14... First thermostat, 15... Second thermostat, 17... First
Power supply path, 18...second power supply path.

Claims

[Scope of utility model registration request]

A first power supply path is provided in the power supply circuit of the infrared heater by connecting the first thermostat and a first switch for "weak" setting in series via a connection plug, and a first power supply path is provided in which the first thermostat and a first switch for "weak" setting are connected in series. A second power supply path is formed in parallel with the first power supply path by connecting a second switch for setting in series via a connecting plug, and the operating temperature of the second thermostat is set to be the same as that of the first thermostat. Set higher than the operating temperature,
A third one for the “medium” setting with diodes connected in series.
An intensity switching circuit for an electric kotatsu, characterized in that a switch is connected in parallel to the second switch.