JP3036977B2 - Cooker weight detector - Google Patents
Cooker weight detectorInfo
- Publication number
- JP3036977B2 JP3036977B2 JP4199718A JP19971892A JP3036977B2 JP 3036977 B2 JP3036977 B2 JP 3036977B2 JP 4199718 A JP4199718 A JP 4199718A JP 19971892 A JP19971892 A JP 19971892A JP 3036977 B2 JP3036977 B2 JP 3036977B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- elastic body
- electrode
- resistance
- mounting table
- 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 - Fee Related
Links
- 230000007423 decrease Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010411 cooking Methods 0.000 description 3
- 241001061260 Emmelichthys struhsakeri Species 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
Landscapes
- Electric Ovens (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、被加熱物の重量を検出
し、その重量情報に応じて加熱を制御する調理器に用い
られる重量検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weight detecting device used in a cooker for detecting the weight of an object to be heated and controlling heating in accordance with the weight information.
【０００２】[0002]
【従来の技術】特開昭６３−２７３７３５号公報には、
載置台を支持するロバ−バル機構を備え、ロバ−バル機
構を構成するバネ板の歪みを検出して載置台上の食品重
量を検出する重量検出装置、及びロバ−バル機構の変位
を、対向する電極の静電容量の変化に基づく発振周波数
の変化で検出して、載置台上の食品重量を検出する重量
検出装置が開示されている。斯かる重量検出装置におい
ては、構造が複雑なロバ−バル機構が必要であり、且つ
重量を検出する歪みセンサ−、及び静電容量変化に伴う
発振周波数は、雰囲気温度変化の影響を受け易く、重量
検出装置の精度を維持するには温度補償回路を必要と
し、回路構成も複雑となっていた。2. Description of the Related Art JP-A-63-273735 discloses that
A weight detection device that includes a rover mechanism that supports the mounting table, detects a distortion of a spring plate that forms the rover mechanism, and detects a food weight on the mounting table; There is disclosed a weight detection device that detects the weight of food on a mounting table by detecting the change in the oscillation frequency based on the change in the capacitance of the electrode to be mounted. In such a weight detecting device, a roberval mechanism having a complicated structure is required, and a strain sensor for detecting weight, and an oscillation frequency accompanying a change in capacitance are easily affected by a change in ambient temperature. In order to maintain the accuracy of the weight detection device, a temperature compensation circuit was required, and the circuit configuration was complicated.
【０００３】[0003]
【発明が解決しようとする課題】雰囲気温度の変化に伴
う検知誤差が小さく、簡単な構造で安価な重量検知装置
を提供する。An object of the present invention is to provide an inexpensive weight detecting device having a simple structure, having a small detection error due to a change in ambient temperature, and having a simple structure.
【０００４】[0004]
【課題を解決するための手段】載置台に載置される物品
の重量を抵抗値の変化で検出する重量検出装置におい
て、載置台を弾性支持する弾性体と、この弾性体に対向
して配設された抵抗電極を有するプリント基板と、上記
弾性体の変位量に応じて上記抵抗電極の一部を短絡させ
る導電電極とからなり、該導電電極は上記抵抗電極との
接触面の幅が上記物品の重量に応じて増減することを特
徴とする。SUMMARY OF THE INVENTION In a weight detecting device for detecting the weight of an article placed on a mounting table by a change in resistance value, an elastic body for elastically supporting the mounting table and an elastic body opposed to the elastic body. A printed circuit board having a provided resistive electrode, and a conductive electrode for short-circuiting a part of the resistive electrode in accordance with the amount of displacement of the elastic body .
Note that the width of the contact surface increases or decreases according to the weight of the article.
Sign .
【０００５】[0005]
【作用】プリント基板上に形成された抵抗体の抵抗値の
変化で重量を検出するため、雰囲気温度の影響が小さ
い。Since the weight is detected by the change in the resistance value of the resistor formed on the printed circuit board, the influence of the ambient temperature is small.
【０００６】[0006]
【実施例】図１及び図２は、本発明実施例の重量検出装
置を備えた調理器の断面図、及び要部断面図を示し、１
は調理器本体、２は調理器本体１内に形成された加熱
室、３はこの加熱室２内に高周波を供給する高周波発生
装置、４は上記加熱室２内底部に配設される受け皿５を
載置する載置台、６は該載置台４を駆動するモータ７の
出力軸で、軸方向に摺動自在に構成されている。８は該
モータ出力軸６の下端に配設され、受け皿に載置される
食品９の重量を検出する重量検出装置である。1 and 2 are a sectional view and a sectional view, respectively, of a cooking device provided with a weight detecting device according to an embodiment of the present invention.
Is a cooking chamber main body, 2 is a heating chamber formed in the cooking chamber main body 1, 3 is a high frequency generator for supplying high frequency into the heating chamber 2, and 4 is a tray 5 disposed at the bottom inside the heating chamber 2. And 6 is an output shaft of a motor 7 for driving the mounting table 4 and is configured to be slidable in the axial direction. Reference numeral 8 denotes a weight detecting device that is disposed at the lower end of the motor output shaft 6 and detects the weight of the food 9 placed on the tray.
【０００７】該重量検出装置８は、上記出力軸６の下端
に摺動当接し、出力軸６に加わる軸方向の荷重（スラス
ト荷重）を弾性支持する板バネ等からなる弾性体１０
と、カーボン印刷等で例えば図３に示す形状に印刷形成
された一対の抵抗電極１１、１１を有するプリント基板
１２と、下面が凸面状になるように湾曲され、その凸面
側で上記抵抗電極１１、１１間を短絡する導電ゴム製の
導電電極１３と、上記弾性体１０の変位を上記導電電極
１３の両端部に伝達する、コ字状のアクチエ−タ１４と
で構成されている。The weight detecting device 8 includes an elastic body 10 made of a leaf spring or the like which slidingly contacts the lower end of the output shaft 6 and elastically supports an axial load (thrust load) applied to the output shaft 6.
And a printed circuit board 12 having a pair of resistance electrodes 11, 11 formed by, for example, carbon printing or the like as shown in FIG. 3, and a lower surface curved so as to have a convex shape. , 11 and a conductive electrode 13 made of conductive rubber for short-circuiting between the elastic members 10 and a U-shaped actuator 14 for transmitting the displacement of the elastic body 10 to both ends of the conductive electrode 13.
【０００８】そして、受け皿上に食品９が置かれると、
食品重量は出力軸６を介して弾性体１０に伝達され、食
品重量に応じて弾性体１０が変位する。この弾性体１０
の変位に基ずいて、上記導電電極１３の両端部が、アク
チエ−タ１４でプリント基板側に押圧され、図３に示す
抵抗電極１１、１１の一部を短絡する導電電極１３の接
触面１３ａの幅Ｗが食品重量に応じて増大して、一対の
抵抗電極１１、１１間の抵抗値が減少する。従って、こ
の抵抗値の変化を電圧変化として検出することにより食
品重量を検出できる。When the food 9 is placed on the saucer,
The food weight is transmitted to the elastic body 10 via the output shaft 6, and the elastic body 10 is displaced according to the food weight. This elastic body 10
3, both ends of the conductive electrode 13 are pressed by the actuator 14 toward the printed circuit board, and the contact surface 13a of the conductive electrode 13 short-circuits a part of the resistance electrodes 11, 11 shown in FIG. Increases in accordance with the weight of the food, and the resistance value between the pair of resistance electrodes 11 decreases. Therefore, the weight of the food can be detected by detecting the change in the resistance value as a voltage change.
【０００９】即ち、重量検出装置は、食品重量により変
位する弾性体の変位量に基づいて、プリント基板に形成
された抵抗電極の一部を短絡する導電電極の、短絡接触
面積を増減させて、抵抗値が変化する抵抗電極形状、及
び導電電極形状の組み合わせであればよい。That is, the weight detecting device increases or decreases the short-circuit contact area of the conductive electrode that short-circuits a part of the resistive electrode formed on the printed circuit board based on the displacement of the elastic body that is displaced by the weight of the food. What is necessary is just a combination of the shape of the resistive electrode and the shape of the conductive electrode whose resistance value changes.
【００１０】[0010]
【発明の効果】食品重量に基づきプリント基板に形成さ
れた抵抗電極の一部を導電電極で短絡させて、食品重量
を抵抗電極の抵抗値の変化で検出するから、構造が簡単
で雰囲気温度の変化に伴う検知誤差の影響が小さい重量
検知装置が提供できる。According to the present invention, a part of the resistance electrode formed on the printed circuit board is short-circuited by the conductive electrode based on the weight of the food, and the weight of the food is detected by a change in the resistance value of the resistance electrode. It is possible to provide a weight detection device that is less affected by a detection error caused by the change.
【図１】本発明実施例の重量検出装置を備えた調理器の
断面図である。FIG. 1 is a sectional view of a cooker provided with a weight detection device according to an embodiment of the present invention.
【図２】本発明の要部断面図である。FIG. 2 is a sectional view of a main part of the present invention.
【図３】プリント基板の抵抗電極の平面図である。FIG. 3 is a plan view of a resistance electrode of the printed circuit board.
４ 載置台 ８ 重量検出装置 １２ プリント基板 １１ 抵抗電極 １３ 導電電極 Reference Signs List 4 mounting table 8 weight detector 12 printed circuit board 11 resistance electrode 13 conductive electrode
Claims (1)
の変化で検出する重量検出装置において、載置台を弾性
支持する弾性体と、この弾性体に対向して配設された抵
抗電極を有するプリント基板と、上記弾性体の変位量に
応じて上記抵抗電極の一部を短絡させる導電電極とから
なり、該導電電極は上記抵抗電極との接触面の幅が上記
物品の重量に応じて増減することを特徴とする調理器の
重量検出装置。In a weight detecting device for detecting the weight of an article placed on a mounting table by a change in resistance value, an elastic body elastically supporting the mounting table, and a resistance disposed opposite to the elastic body. A printed circuit board having electrodes, and a conductive electrode for short-circuiting a part of the resistance electrode according to the displacement of the elastic body.
The conductive electrode has a width of the contact surface with the resistive electrode as described above.
A weight detecting device for a cooker, which increases or decreases according to the weight of an article .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4199718A JP3036977B2 (en) | 1992-07-27 | 1992-07-27 | Cooker weight detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4199718A JP3036977B2 (en) | 1992-07-27 | 1992-07-27 | Cooker weight detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0642752A JPH0642752A (en) | 1994-02-18 |
| JP3036977B2 true JP3036977B2 (en) | 2000-04-24 |
Family
ID=16412461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4199718A Expired - Fee Related JP3036977B2 (en) | 1992-07-27 | 1992-07-27 | Cooker weight detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3036977B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8031361B2 (en) | 2006-09-19 | 2011-10-04 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
| US8089662B2 (en) | 2006-09-25 | 2012-01-03 | Brother Kyogo Kabushiki Kaisha | Image forming apparatus |
| US8125670B2 (en) | 2006-09-28 | 2012-02-28 | Brother Kogyo Kabushiki Kaisha | Data processing apparatus and recording medium |
| US8179557B2 (en) | 2006-09-28 | 2012-05-15 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus for reading information from and writing information to a non-contact medium |
-
1992
- 1992-07-27 JP JP4199718A patent/JP3036977B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8031361B2 (en) | 2006-09-19 | 2011-10-04 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
| US8089662B2 (en) | 2006-09-25 | 2012-01-03 | Brother Kyogo Kabushiki Kaisha | Image forming apparatus |
| US8125670B2 (en) | 2006-09-28 | 2012-02-28 | Brother Kogyo Kabushiki Kaisha | Data processing apparatus and recording medium |
| US8179557B2 (en) | 2006-09-28 | 2012-05-15 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus for reading information from and writing information to a non-contact medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0642752A (en) | 1994-02-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |