JPH078253B2 - Safety device for heating cooker - Google Patents
Safety device for heating cookerInfo
- Publication number
- JPH078253B2 JPH078253B2 JP15176089A JP15176089A JPH078253B2 JP H078253 B2 JPH078253 B2 JP H078253B2 JP 15176089 A JP15176089 A JP 15176089A JP 15176089 A JP15176089 A JP 15176089A JP H078253 B2 JPH078253 B2 JP H078253B2
- Authority
- JP
- Japan
- Prior art keywords
- inner pot
- temperature detecting
- micro switch
- spring
- detecting device
- 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
- 238000010438 heat treatment Methods 0.000 title claims description 19
- 239000000758 substrate Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 description 17
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 7
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
Landscapes
- Cookers (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電気ジャー炊飯器等の内鍋を備えた加熱調理
器で、内鍋なし通電等の異常通電を防止する加熱調理器
の安全装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a heating cooker including an inner pot such as an electric jar rice cooker, and a safety device for the heating cooker that prevents abnormal energization such as energization without the inner pot. It is a thing.
従来の技術 近年、マイクロコンピューターにより加熱装置を制御す
る電気ジャー炊飯器等の加熱調理器が、普及している。2. Description of the Related Art In recent years, heating cookers such as electric jar rice cookers that control a heating device by a microcomputer have become widespread.
従来、この種の安全装置は第３図に示すような構成が一
般的であった。以下、その構成について図を参照しなが
ら説明する。第３図において、内鍋１の底面に熱を供給
する鋳込みヒーター２の略中央部には、内鍋１の温度を
検知する温度センサ−３を収納した温度検知装置４が装
着されており、この温度検知装置４は鋳込みヒーター２
の下方に配置した回路基板５に信号を送って鋳込みヒー
ター２の通電を制御している。Conventionally, this type of safety device has generally been configured as shown in FIG. The configuration will be described below with reference to the drawings. In FIG. 3, a temperature detecting device 4 accommodating a temperature sensor-3 for detecting the temperature of the inner pot 1 is attached to a substantially central portion of a casting heater 2 which supplies heat to the bottom of the inner pot 1. This temperature detecting device 4 is a casting heater 2
A signal is sent to the circuit board 5 arranged below the electric power source to control the energization of the casting heater 2.
温度検知装置４は、付勢ばね６によって絶えず上方へ付
勢されており、また、下部には摺動板７を備えている。
前記回路基板５は基板ケース８に収納され、かつ鋳込み
ヒーター２への通電を強制解除させるマイクロスイッチ
９が設けられている。前記基板ケース８には、回動自在
にスイッチレバー10が装着されており、このスイッチレ
バ−10の一端は、前記温度検知装置４の摺動板７の角穴
（図示せず）に挿入され、他端は、前記マイクロスイッ
チ９の押しボタン部に当接している。The temperature detecting device 4 is constantly biased upward by a biasing spring 6, and a sliding plate 7 is provided at the lower part.
The circuit board 5 is housed in a board case 8 and is provided with a micro switch 9 for forcibly canceling the energization of the casting heater 2. A switch lever 10 is rotatably mounted on the substrate case 8, and one end of the switch lever 10 is inserted into a square hole (not shown) of a slide plate 7 of the temperature detecting device 4. , The other end is in contact with the push button portion of the micro switch 9.
上記構成において、内鍋１を装着すると、温度検知装置
４は内鍋１の底面に付勢されながら押し下げられ、摺動
板７も降下する。この時、摺動板７の角穴に挿入された
スイッチレバ−10は、基板ケース８への装着部を中心と
して回動し、他端のマイクロスイッチ９の押しボタン部
への押圧を開放してマイクロスイッチ９を動作させ、内
鍋１の装着を回路上認識することとなる。In the above configuration, when the inner pot 1 is mounted, the temperature detecting device 4 is pushed down while being biased by the bottom surface of the inner pot 1, and the sliding plate 7 also descends. At this time, the switch lever 10 inserted in the square hole of the sliding plate 7 rotates around the mounting portion to the substrate case 8 to release the pressing of the micro switch 9 at the other end to the push button portion. Then, the micro switch 9 is operated to recognize the mounting of the inner pot 1 on the circuit.
発明が解決しようとする課題 このような従来の構成では、スイッチレバ−10は、合成
樹脂等で成形されたものが一般的であり、ほぼ剛体であ
るために、温度検知装置４の摺動距離を大きくする必要
があった。すなわち、組立後の寸法バラツキ等により、
マイクロスイッチ９の動作が不確実になったり、マイク
ロスイッチ９への異常な荷重による回路基板５の破壊を
防止するために、マイクロスイッチ９の押しボタン部の
動作ストロークを大きくし、それにともない、温度検知
装置４の摺動距離を大きくする必要があった。また、こ
れによって、マイクロスイッチ９も大型となり、回路基
板５のスペースや、温度検知装置４の摺動スペースも大
きくなるものであった。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In such a conventional configuration, the switch lever 10 is generally made of synthetic resin or the like, and since it is a substantially rigid body, the sliding distance of the temperature detecting device 4 is small. Had to be larger. That is, due to dimensional variations after assembly,
In order to prevent the operation of the micro switch 9 from becoming uncertain and to prevent the circuit board 5 from being damaged by an abnormal load on the micro switch 9, the operation stroke of the push button portion of the micro switch 9 is increased, and accordingly, the temperature It was necessary to increase the sliding distance of the detection device 4. Further, this also makes the microswitch 9 large, and the space for the circuit board 5 and the sliding space for the temperature detection device 4 also become large.
また、温度検知装置４の上下摺動をスイッチレバー10の
回転運転にかえるために、摺動板７の角穴とスイッチレ
バー10との寸法関係は、若干のガタが必要であり、この
ガタによるスキ間に米粒等の異物がはまり込み、マイク
ロスイッチ９の動作が不確実になる危険性があった。Further, in order to change the vertical movement of the temperature detecting device 4 to the rotational operation of the switch lever 10, the dimensional relationship between the square hole of the sliding plate 7 and the switch lever 10 needs to be slightly loose. There is a risk that foreign matter such as rice grains may get caught in the gap and the operation of the microswitch 9 may become uncertain.
さらに、前述のごとく、スイッチレバー10は合成樹脂等
の成形品が一般的であり、高温となる温度検知装置４の
摺動板７と接触しているため、例えば鋳込みヒーター２
と内鍋１との間に米粒等の異物がはさみ込まれた場合等
の通電時には、鋳込みヒーター２の温度が急上昇するた
め、摺動板７も相当高温となり、スイッチレバー10の熱
変形や熱劣化等で、マイクロスイッチ９が正常に動作し
ない危険性があった。Further, as described above, the switch lever 10 is generally a molded product made of synthetic resin or the like, and is in contact with the sliding plate 7 of the temperature detecting device 4 which becomes a high temperature.
When foreign matter such as rice grains is sandwiched between the inner pot 1 and the inner pot 1, the temperature of the casting heater 2 rises sharply during energization, so that the sliding plate 7 also becomes considerably hot and the switch lever 10 undergoes thermal deformation or heat. There is a risk that the micro switch 9 may not operate normally due to deterioration or the like.
また、スイッチレバー10は摺動板７の角穴に挿入し、な
おかつ、基板ケース８に装着しなければならず、組立性
が非常に悪いものであった。Further, the switch lever 10 has to be inserted into the square hole of the sliding plate 7 and mounted on the substrate case 8, so that the assembling property is very poor.
本発明は、上記課題を解決するもので、組立て作業性が
よく、簡便かつ省スペースで、確実性を高めた加熱調理
器の安全装置を提供することを目的としている。An object of the present invention is to solve the above problems, and to provide a safety device for a heating cooker which has good assembly workability, is simple and space-saving, and has improved reliability.
課題を解決するための手段 本発明は上記目的を達成するために、内鍋と、内鍋に熱
を供給する加熱装置と、前記内鍋に付勢ばねにより当接
する温度検知装置と、前記加熱装置の通電を制御し、か
つこの加熱装置の通電を強制解除するマイクロスイッチ
を備えた制御基板と、この制御基板を収納する基板ケー
スと、この基板ケースに回動自在に装着されるレバーば
ねとを備え、前記レバーばねの一端は、前記温度検知装
置の底部に伸長当接する押圧部を形成し、他端には基板
ケースに当接するばね部と、前記マイクロスイッチの押
しボタンを動作させる動作部とを形成して、前記温度検
知装置とマイクロスイッチとを連結してなるものであ
る。Means for Solving the Problems In order to achieve the above object, the present invention provides an inner pot, a heating device that supplies heat to the inner pot, a temperature detection device that contacts the inner pot by a biasing spring, and the heating device. A control board provided with a micro switch for controlling the energization of the device and forcibly releasing the energization of the heating device, a board case accommodating the control board, and a lever spring rotatably attached to the board case. One end of the lever spring forms a pressing part that extends and contacts the bottom of the temperature detecting device, and the other end of the lever spring contacts the substrate case and an operating part that operates the push button of the microswitch. And the temperature detection device and the microswitch are connected to each other.
作用 本発明は上記した構成により、ばね性を有するレバーば
ねで温度検知装置とマイクロスイッチとを連結してお
り、また、基板ケースにレバーばねのばね部を当接させ
ることで絶えず温度検知装置とレバーばねを当接させて
いるため、組立後の寸法バラツキを吸収しやすく、マイ
クロスイッチの押しボタンのストロークも最少限にする
ことができまた、異物の浸入も防止できる。よって、内
鍋の装着による温度検知装置の摺動距離も小さくするこ
とができるものである。The present invention has the above-described configuration, in which the temperature detecting device and the micro switch are connected by a lever spring having springiness, and the temperature detecting device is constantly connected by bringing the spring portion of the lever spring into contact with the substrate case. Since the lever springs are brought into contact with each other, it is easy to absorb dimensional variations after assembly, the stroke of the push button of the micro switch can be minimized, and foreign matter can be prevented from entering. Therefore, it is possible to reduce the sliding distance of the temperature detecting device by mounting the inner pot.
また、レバーばねは金属製で耐熱性が強く、さらに温度
検知装置に対して当接させるだけであり、組立性も良く
できるものである。Further, the lever spring is made of metal and has a high heat resistance, and further, the lever spring is merely brought into contact with the temperature detecting device, and the assembling property can be improved.
実 施 例 以下、本発明の一実施例について第１図および第２図を
参照しながら説明する。Example An example of the present invention will be described below with reference to FIGS. 1 and 2.
図に示すように、アルミニウム板等で絞り加工された内
鍋21の底部には、シーズヒーター22を埋設したアルミ製
の鋳込みヒーター23が配置され、内鍋21に熱を供給す
る。前記鋳込みヒーター23の略中央部には、内部に温度
センサー24を備えた温度検知装置25が装着され、鋳込み
ヒーター23の下方に配した制御基板26に信号を送っで鋳
込みヒーター23への通電を制御している。前記温度検知
装置25は、付勢ばね27により絶えず上方へ付勢されてお
り、また底部には下部を略Ｌ字形に形成した摺動板28を
設けている。前記制御基板26は、合成樹脂で形成した基
板ケース29に収納され、この基板ケース29は板金等で形
成されたフレーム30に取付けられて鋳込みヒーター23の
下方に配置した遮熱板31に取付けられている。また、前
記制御基板26には、鋳込みヒーター23への通電を強制解
除するマイクロスイッチ32が備えられている。As shown in the figure, an aluminum casting heater 23 having a sheathed heater 22 embedded therein is arranged at the bottom of the inner pot 21 drawn by an aluminum plate or the like to supply heat to the inner pot 21. At a substantially central portion of the casting heater 23, a temperature detecting device 25 having a temperature sensor 24 therein is attached, and a signal is sent to a control board 26 arranged below the casting heater 23 to energize the casting heater 23. Have control. The temperature detecting device 25 is constantly urged upward by an urging spring 27, and a bottom portion is provided with a sliding plate 28 having a substantially L-shaped lower portion. The control board 26 is housed in a board case 29 made of synthetic resin, and the board case 29 is attached to a frame 30 made of sheet metal or the like and is attached to a heat shield plate 31 arranged below the casting heater 23. ing. Further, the control board 26 is provided with a micro switch 32 for forcibly canceling the energization of the casting heater 23.
前記基板ケース29の先端突出部33の回転軸33aには、バ
ネ材で曲げ加工されたレバーばね34が回動自在に装着さ
れており、このレバーばね34の一端は、前記温度検知装
置25の下方へ伸長して押圧部35を形成して、この押圧部
35に設けたリブ押し部36を介して摺動板28のＬ字曲げ部
に当接している。レバーばね34の他端は、ばね部37と動
作部38を形成しており、ばね部37は基板ケース29の前壁
部39に付勢して、この反ぱつ力で押圧部35を絶えず摺動
板28に押圧させている。動作部38は、前記マイクロスイ
ッチ32の押しボタン部40に伸長し、押しボタン部40を動
作させる。A lever spring 34 bent by a spring material is rotatably mounted on the rotary shaft 33a of the distal end protruding portion 33 of the substrate case 29, and one end of the lever spring 34 is connected to the temperature detecting device 25. The pressing portion 35 is formed by extending downward and the pressing portion 35 is formed.
It is in contact with the L-shaped bent portion of the sliding plate 28 via the rib pushing portion 36 provided on the 35. The other end of the lever spring 34 forms a spring portion 37 and an operating portion 38. The spring portion 37 urges the front wall portion 39 of the substrate case 29, and this pressing force constantly slides the pressing portion 35. The moving plate 28 is pressed. The operating unit 38 extends to the push button unit 40 of the micro switch 32 and operates the push button unit 40.
上記構成において動作を説明すると、内鍋21を装着する
と、底面部が鋳込みヒーター23に当接するが、鋳込みヒ
ーター23より突出していた温度検知装置25は内鍋21に押
し下げられる。この時、温度検知装置25は付勢ばね27に
より内鍋21の底面部に密着した状態で下降する。温度検
知装置25の下降にともない、摺動板28が下降し、レバー
ばね34の押圧部35を押し下げるが、ばね部37の基板ケー
ス29の前壁部39への押圧により押圧部35は摺動板28に絶
えず当接しているためこの動作は確実に連動して行なわ
れる。レバーばね34は基板ケース29に回動自在に装着さ
れているため、回転軸33aを回転中心として押圧部35の
下方向への摺動を動作部38の上方向への摺動に変換して
マイクロスイッチ37の押しボタン部40と動作させ、内鍋
21の装着を検知して、鋳込みヒーター23への通電が可能
となる。The operation in the above configuration will be described. When the inner pot 21 is mounted, the bottom surface portion abuts the casting heater 23, but the temperature detecting device 25 protruding from the casting heater 23 is pushed down by the inner pot 21. At this time, the temperature detecting device 25 is lowered by the biasing spring 27 while being in close contact with the bottom surface of the inner pot 21. As the temperature detecting device 25 descends, the sliding plate 28 descends and depresses the pressing portion 35 of the lever spring 34, but the pressing portion 35 slides due to the spring portion 37 pressing the front wall portion 39 of the substrate case 29. Since the plate 28 is constantly in contact with the plate 28, this operation is surely performed in conjunction with each other. Since the lever spring 34 is rotatably attached to the substrate case 29, the downward movement of the pressing portion 35 about the rotation shaft 33a is converted into the upward movement of the operating portion 38. Operates with the push button section 40 of the micro switch 37,
When the mounting of the casting heater 23 is detected, it is possible to energize the casting heater 23.
このように、本発明の実施例の加熱調理器の安全装置に
よれば、レバーばね34をバネ材を用いて形成し、ばね部
37を基板ケース29に当接押圧して、押圧部35を摺動板28
に付勢しているため、組立後の寸法ばらつきを吸収しや
すく、制御基板26にも過大荷重をかけることもなく、ま
たマイクロスイッチ32の押しボタン部40の動作ストロー
クも最少限にすることができ、異物の侵入も防止でき
る。よって内鍋21の装着による温度検知装置25の摺動距
離も小さくすることができ、省スペースとなるものであ
る。As described above, according to the safety device of the heating cooker of the embodiment of the present invention, the lever spring 34 is formed using the spring material, and the spring portion is formed.
37 is pressed against the substrate case 29, and the pressing portion 35 is moved to the sliding plate 28.
Since it is biased to, it is easy to absorb the dimensional variation after assembly, do not apply an excessive load to the control board 26, and minimize the operation stroke of the push button portion 40 of the micro switch 32. In addition, foreign matter can be prevented from entering. Therefore, the sliding distance of the temperature detecting device 25 by mounting the inner pot 21 can be shortened, and the space can be saved.
また、レバーばね34は金属製で耐熱性・耐久性が良好で
あり、さらに温度検知装置25に対して当接させるだけで
あり、組立性も良好となるものである。Further, the lever spring 34 is made of metal and has good heat resistance and durability. Further, the lever spring 34 is simply brought into contact with the temperature detecting device 25, and the assembling property is also improved.
なお、本実施例において、加熱装置を鋳込みヒーター23
としたが、特に限定するものではなく、電磁誘導加熱等
においても同様の効果が生まれることは明白である。In this embodiment, the heating device is a casting heater 23.
However, the present invention is not particularly limited, and it is obvious that the same effect can be obtained in electromagnetic induction heating and the like.
発明の効果 以上の実施例から明らかなように、本発明によれば、ば
ね性を有するレバーばねで温度検知装置とマイクロスイ
ッチの動作を連結し、レバーばねのばね部を基板ケース
に付勢させることで、絶えずレバーばねの押圧部と温度
検知装置とを当接させているため、制御基板に過荷重を
加えることなく寸法ばらつきを吸収でき、マイクロスイ
ッチの押しボタンのストロークや温度検知装置の摺動ス
トロークを小さくすることができるものであり、省スペ
ースで耐熱耐久性が良好で簡単な構成で組立性も良好で
確実に動作できる加熱調理器の安全装置を提供できる。EFFECTS OF THE INVENTION As is apparent from the above embodiments, according to the present invention, the operation of the temperature detecting device and the micro switch is connected by the lever spring having the spring property, and the spring portion of the lever spring is biased to the substrate case. With this, the pressing part of the lever spring and the temperature detection device are constantly in contact with each other, so that it is possible to absorb the dimensional variation without applying an overload to the control board, and the stroke of the push button of the microswitch or the sliding of the temperature detection device. It is possible to provide a safety device for a heating cooker that can reduce the dynamic stroke, has a small space, has good heat resistance and durability, has a simple structure, has good assembly properties, and can operate reliably.
第１図は本発明の一実施例における加熱調理器の安全装
置の内部構成を示す縦断面図、第２図は同平面図、第３
図は従来の加熱調理器の安全装置の内部構成を示す縦断
面図である。 21……内鍋、23……鋳込みヒーター（加熱装置）、25…
…温度検知装置、26……制御基板、27……付勢ばね、29
……基板ケース、32……マイクロスイッチ、34……レバ
ーばね、35……押圧部、37……ばね部、38……動作部、
40……押しボタン部。FIG. 1 is a longitudinal sectional view showing the internal structure of a safety device for a heating cooker according to an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG.
FIG. 1 is a vertical cross-sectional view showing the internal structure of a safety device for a conventional cooking device. 21 …… Inner pot, 23 …… Casting heater (heating device), 25…
… Temperature detector, 26 …… Control board, 27 …… Biasing spring, 29
...... Substrate case, 32 ...... Micro switch, 34 ...... Lever spring, 35 ...... Pressing part, 37 ...... Spring part, 38 ...... Operating part,
40: Push button part.
Claims (1)
する加熱装置と、前記内鍋に付勢ばねにより当接する温
度検知装置と、前記加熱装置の通電を制御し、かつこの
加熱装置の通電を強制解除するマイクロスイッチを備え
た制御基板と、この制御基板を収納する基板ケースと、
この基板ケースに回動自在に装着されるレバーばねとを
備え、前記レバーばねの一端は前記温度検知装置の底部
に伸長当接する押圧部を形成し、他端には、基板ケース
に当接するばね部と、前記マイクロスイッチの押しボタ
ンを動作させる動作部とを形成して、前記温度検知装置
とマイクロスイッチとを連結してなる加熱調理器の安全
装置。1. An inner pot for storing food, a heating device for supplying heat to the inner pot, a temperature detecting device for contacting the inner pot with an urging spring, and an energization of the heating device, and A control board provided with a micro switch for forcibly releasing the energization of the heating device; and a board case for housing the control board,
A lever spring rotatably mounted on the substrate case; one end of the lever spring forms a pressing portion that extends and contacts the bottom portion of the temperature detecting device, and the other end of the lever spring contacts the substrate case. A safety device for a heating cooker, which comprises a section and an operation section for operating a push button of the micro switch, and connects the temperature detection device and the micro switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15176089A JPH078253B2 (en) | 1989-06-14 | 1989-06-14 | Safety device for heating cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15176089A JPH078253B2 (en) | 1989-06-14 | 1989-06-14 | Safety device for heating cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0316529A JPH0316529A (en) | 1991-01-24 |
| JPH078253B2 true JPH078253B2 (en) | 1995-02-01 |
Family
ID=15525697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15176089A Expired - Lifetime JPH078253B2 (en) | 1989-06-14 | 1989-06-14 | Safety device for heating cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH078253B2 (en) |
-
1989
- 1989-06-14 JP JP15176089A patent/JPH078253B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0316529A (en) | 1991-01-24 |
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