JPH0442927B2 - - Google Patents
Info
- Publication number
- JPH0442927B2 JPH0442927B2 JP61142020A JP14202086A JPH0442927B2 JP H0442927 B2 JPH0442927 B2 JP H0442927B2 JP 61142020 A JP61142020 A JP 61142020A JP 14202086 A JP14202086 A JP 14202086A JP H0442927 B2 JPH0442927 B2 JP H0442927B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- safety switch
- sensitive device
- pot
- lever
- 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 - Lifetime
Links
Landscapes
- Cookers (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は炊飯器等の電気調理器に関し、特に鍋
の有無を感知する保安スイツチ機構に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to electric cooking appliances such as rice cookers, and more particularly to a safety switch mechanism that detects the presence or absence of a pot.
従来の技術
従来のこの種の保安スイツチ機構は、例えば実
開昭57−169214号公報に示されているように、第
４図のような構造になつていた。すなわち、保安
スイツチ１は保安スイツチホルダー２にネジ３に
て固着され、かつ保安スイツチ１は感熱装置４と
連動するレバー５を装備し、このレバー５の移動
により、電気接点部を可動させるようにしてい
た。BACKGROUND ART A conventional safety switch mechanism of this type has a structure as shown in FIG. 4, as shown in, for example, Japanese Utility Model Application No. 57-169214. That is, the safety switch 1 is fixed to a safety switch holder 2 with a screw 3, and the safety switch 1 is equipped with a lever 5 that interlocks with a heat sensitive device 4, and the movement of this lever 5 moves the electric contact part. was.
発明が解決しようとする問題点
しかしながら、このような従来の構成では、保
安スイツチ１を固着する保安スイツチホルダー２
や、保安スイツチの電気信号を受けて、通電を
ON−OFF制御する制御回路基板に伝える電線や
それに付随するネジ、端子などが必要であつた。Problems to be Solved by the Invention However, in such a conventional configuration, the safety switch holder 2 that secures the safety switch 1 is
energizes in response to an electrical signal from a safety switch.
Electric wires and accompanying screws, terminals, etc. were required to transmit the ON-OFF control to the control circuit board.
本発明はこのような問題点を解決するもので、
簡単な構成の保安スイツチ機構を有する電気調理
器を提供することを目的とするものである。 The present invention solves these problems,
It is an object of the present invention to provide an electric cooker having a safety switch mechanism with a simple configuration.
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に本発明は、発熱体
上に載置される鍋と、前記発熱体を貫通して鍋底
中央部の温度を感知し、前記鍋の有無に連動して
上下方向に移動する感熱装置と、感熱装置下端に
固着した連動板と、感熱装置下方部付近に位置さ
せて、その端部に支点を有し、他方の端部を連動
板に当接する回動自在のレバーと、前記レバーの
支点付近に感熱装置の移動方向と直角に設けた制
御用プリント基板と、前記制御用プリント基板上
に設け、押釦の動作方向が制御用プリント基板と
平行である保安スイツチを備え、この保安スイツ
チの押釦を前記レバーの支点付近に当接させるこ
とにより作動させるようにしたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes a pot placed on a heating element, a temperature sensor that penetrates the heating element to sense the temperature at the center of the bottom of the pot, and A heat-sensitive device that moves up and down in conjunction with the presence or absence of the heat-sensitive device, an interlocking plate fixed to the bottom end of the heat-sensing device, and a linking plate located near the bottom of the heat-sensing device and having a fulcrum at its end and the other end of the interlocking plate. a control printed circuit board provided near the fulcrum of the lever at right angles to the moving direction of the heat-sensitive device; and a control printed circuit board provided on the control printed circuit board so that the operating direction of the push button is The lever is provided with a safety switch that is parallel to the lever, and is actuated by bringing the push button of the safety switch into contact with the vicinity of the fulcrum of the lever.
作 用
上記構成とすることにより、保安スイツチを取
付ける保安スイツチホルダーや、保安スイツチの
電気的信号を基板へ伝える電線、およびそれに付
随するネジ、接続端子などが不用となるため、信
頼性の高い保安スイツチ機構を提供することがで
きる。Function The above configuration eliminates the need for a safety switch holder for attaching the safety switch, electric wires for transmitting the electrical signals of the safety switch to the board, and accompanying screws and connection terminals, resulting in highly reliable security. A switch mechanism can be provided.
実施例
以下、本発明の一実施例を第１図〜第３図にも
とづいて説明する。図において、２１はボデイ
で、このボデイ２１内には保護枠２２を配置し、
かつこの保護枠２２の底部中央部に貫通孔２２ａ
を設けている。２３は保護枠２２内に固着され、
かつヒータ２３ａを鋳込んだ発熱体で、この発熱
体２３は中央部に貫通孔２３ｂを設けている。２
４は発熱体２３上に着脱自在に載置される鍋であ
る。Embodiment Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 3. In the figure, 21 is a body, and a protective frame 22 is arranged inside this body 21.
A through hole 22a is provided in the center of the bottom of this protective frame 22.
has been established. 23 is fixed within the protective frame 22,
The heating element 23 has a heater 23a cast therein, and a through hole 23b is provided in the center of the heating element 23. 2
4 is a pot that is removably placed on the heating element 23.
２５は鍋２４の底面と密接して鍋２４内の温度
を感知する感熱装置で、この感熱装置２５は下部
に連動板２５ａを有し、かつ発熱体２３の中央部
の貫通孔２３ｂに固着された感熱ケース２６内に
収納されている。 Reference numeral 25 denotes a heat-sensitive device that is in close contact with the bottom surface of the pot 24 to sense the temperature inside the pot 24. This heat-sensitive device 25 has an interlocking plate 25a at the bottom and is fixed to a through hole 23b in the center of the heating element 23. It is housed in a heat-sensitive case 26.
２７は感熱装置２５と感熱ケース２６の間に介
在されたコイルバネで、このコイルバネ２７は第
２図のように鍋２４を発熱体２３に載置すると下
がり、一方、第１図のように鍋２４を除去すると
上がるという動作を感熱装置２５に付勢してい
る。 27 is a coil spring interposed between the heat sensitive device 25 and the heat sensitive case 26. This coil spring 27 lowers when the pot 24 is placed on the heating element 23 as shown in FIG. The heat-sensitive device 25 is energized to move up when it is removed.
２８は制御用プリント基板で、この基板２８は
ボデイ２１の下方部に固着した下枠２９にネジ２
８′にて固着されている。また前記基板２８上に
は保安スイツチ３０が設けられ、かつ保安スイツ
チ３０の押釦３０ａはコイルバネ３１で付勢され
ており、押釦３０ａの移動により電気接点部を可
動させるものである。 28 is a control printed circuit board, and this board 28 is attached to a lower frame 29 fixed to the lower part of the body 21 with screws 2.
It is fixed at 8'. Further, a safety switch 30 is provided on the board 28, and a push button 30a of the safety switch 30 is biased by a coil spring 31, and the movement of the push button 30a moves the electric contact portion.
３２は下枠２９に回動軸部３３により回動自在
に取り付けられたレバーで、このレバー３２の先
端３２ａは感熱装置２５の連動板２５ａに当接し
ており、この連動板２５ａの移動に伴つて回動軸
部３３を支点として回動し、そしてレバー３２の
作動部３２ｂが前記保安スイツチ３０の押釦３１
を移動させるものである。 Reference numeral 32 denotes a lever rotatably attached to the lower frame 29 by a rotation shaft 33. The tip 32a of this lever 32 is in contact with the interlocking plate 25a of the heat-sensitive device 25, and as the interlocking plate 25a moves, The lever 32 rotates around the rotation shaft 33 as a fulcrum, and the operating portion 32b of the lever 32 presses the push button 31 of the safety switch 30.
It moves the .
次に、上記一実施例の構成における作用を説明
する。 Next, the operation of the configuration of the above embodiment will be explained.
第１図に示すように発熱体２３上に鍋２４が載
置されていない場合は、感熱装置２５はコイルバ
ネ２７によつて付勢されて上方へ移動する。これ
に伴つて連動板２５ａに当接するレバー３２の先
端部３２ａは回動軸部３３を支点として反時計方
向に回動し、作動部３２ｂが保安スイツチ３０の
押釦３０ａを押圧して保安スイツチ３０をOFF
状態にしている。 As shown in FIG. 1, when the pot 24 is not placed on the heating element 23, the heat sensitive device 25 is urged by the coil spring 27 and moves upward. Along with this, the tip 32a of the lever 32 that contacts the interlocking plate 25a rotates counterclockwise about the rotation shaft 33, and the actuator 32b presses the push button 30a of the safety switch 30, causing the safety switch 30 to be turned off. OFF
I am in a state.
また第２図に示すように、発熱体２３上に鍋２
４を載置すると、感熱装置２５は下方に移動す
る。これに伴つて連動板２５ａに当接するレバー
３２の先端部３２ａはコイルバネ３１のバネ力に
よつて回動軸部３３を支点として時計方向に回動
するため、保安スイツチ３０の押釦３０ａはレバ
ー３２の作動部３２ｂによる押圧が解除されてコ
イルバネ３１のバネ力によつて外方に突出する。
これにより保安スイツチ３０はON状態となる。 In addition, as shown in FIG.
4, the heat sensitive device 25 moves downward. Along with this, the tip end 32a of the lever 32 that comes into contact with the interlocking plate 25a rotates clockwise about the rotation shaft 33 by the spring force of the coil spring 31, so that the push button 30a of the safety switch 30 is pressed against the lever 32. The pressure by the operating portion 32b is released and the spring force of the coil spring 31 causes the coil spring 31 to protrude outward.
As a result, the safety switch 30 is turned on.
この場合、第２図において、回動軸部３３とレ
バー３２の先端部３２ａと連動板２５ａの当接点
との距離をL1とし、回動軸部３３とレバー３２
の作動部３２ｂと押釦３０ａ部の当接点との距離
をL2とすると、モーメントの関係は
L1×（コイルバネ２７の力）＞L2×（コイルバネ
３１の力）を満たしている。 In this case, in FIG. 2, the distance between the rotating shaft 33, the tip 32a of the lever 32, and the contact point of the interlocking plate 25a is L1 , and the distance between the rotating shaft 33 and the lever 32 is L1.
When the distance between the actuating portion 32b and the contact point of the push button 30a is L2 , the moment relationship satisfies L1 ×(force of coil spring 27)> L2 ×(force of coil spring 31).
発明の効果
以上のように本発明によれば、保安スイツチを
直接制御用プリント基板に備えた簡単な構成の保
安スイツチ機構を提供することができるととも
に、保安スイツチへの押圧方向は前記基板と平行
であるため、基板の板厚方向へ力が加わることは
なく、その結果、保安スイツチの動作により、基
板が撓むということもなく、またレバーの支点か
ら保安スイツチの押釦当接点までの距離＜レバー
の支点から連動板の当接点までの距離という関係
を有しているので、連動板の力が小さくても押釦
を確実に動作せることができ、信頼性の高い保安
スイツチ機構を提供することができるものであ
る。Effects of the Invention As described above, according to the present invention, it is possible to provide a safety switch mechanism with a simple structure in which a safety switch is directly provided on a control printed circuit board, and the direction in which the safety switch is pressed is parallel to the board. Therefore, no force is applied in the thickness direction of the board, and as a result, the board does not bend due to the operation of the safety switch, and the distance from the fulcrum of the lever to the contact point of the push button of the safety switch is To provide a highly reliable safety switch mechanism in which a push button can be operated reliably even when the force of an interlocking plate is small because of the relationship between the fulcrum of a lever and the contact point of an interlocking plate. It is something that can be done.
第１図は本発明の一実施例における炊飯器の鍋
を除去したときの状態を示す要部拡大断面図、第
２図は同炊飯器の鍋を熱板上に載置したときの状
態を示す要部拡大断面図、第３図は炊飯器の断面
図、第４図は従来の保安スイツチ機構を備えた圧
力調理器の断面図である。
２３…発熱体、２４…鍋、２５…感熱装置、２
８…制御用プリント基板、３０…保安スイツチ、
３０ａ…押釦、３２…レバー。
Fig. 1 is an enlarged cross-sectional view of the main parts of a rice cooker according to an embodiment of the present invention, showing the state when the pot is removed, and Fig. 2 shows the state when the pot of the rice cooker is placed on a hot plate. 3 is a sectional view of a rice cooker, and FIG. 4 is a sectional view of a pressure cooker equipped with a conventional safety switch mechanism. 23... Heating element, 24... Pot, 25... Heat sensitive device, 2
8... Control printed circuit board, 30... Safety switch,
30a...push button, 32...lever.
Claims (1)
通して鍋底中央部の温度を感知し、前記鍋の有無
に連動して上下方向に移動する感熱装置と、感熱
装置下端に固着した連動板と、感熱装置下方部付
近に位置させて、その端部に支点を有し、他方の
端部を連動板に当接する回動自在のレバーと、前
記レバーの支点付近に感熱装置の移動方向と直角
に設けた制御用のプリント基板と、前記制御用プ
リント基板上に設け、押釦の動作方向が制御用プ
リント基板と平行である保安スイツチを備え、こ
の保安スイツチの押釦を前記レバーの支点付近に
当接させることにより作動させることを特徴とす
る電気調理器。1. A pot placed on a heating element, a heat-sensitive device that penetrates the heat-generating element to sense the temperature at the center of the bottom of the pot, and moves up and down in conjunction with the presence or absence of the pot, and a heat-sensitive device fixed to the lower end of the heat-sensitive device. a rotatable lever located near the lower part of the heat-sensitive device and having a fulcrum at one end and whose other end abuts the interlocking plate; A control printed circuit board is provided perpendicular to the direction of movement, and a safety switch is provided on the control printed circuit board and the operating direction of the push button is parallel to the control printed circuit board. An electric cooker characterized in that it is activated by contacting the vicinity of a fulcrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61142020A JPS62298315A (en) | 1986-06-18 | 1986-06-18 | electric cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61142020A JPS62298315A (en) | 1986-06-18 | 1986-06-18 | electric cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62298315A JPS62298315A (en) | 1987-12-25 |
| JPH0442927B2 true JPH0442927B2 (en) | 1992-07-15 |
Family
ID=15305500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61142020A Granted JPS62298315A (en) | 1986-06-18 | 1986-06-18 | electric cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62298315A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62295619A (en) * | 1986-06-16 | 1987-12-23 | 松下電器産業株式会社 | electric cooker |
-
1986
- 1986-06-18 JP JP61142020A patent/JPS62298315A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62298315A (en) | 1987-12-25 |
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