JPH0225101B2 - - Google Patents
Info
- Publication number
- JPH0225101B2 JPH0225101B2 JP57137514A JP13751482A JPH0225101B2 JP H0225101 B2 JPH0225101 B2 JP H0225101B2 JP 57137514 A JP57137514 A JP 57137514A JP 13751482 A JP13751482 A JP 13751482A JP H0225101 B2 JPH0225101 B2 JP H0225101B2
- Authority
- JP
- Japan
- Prior art keywords
- switch
- lever
- door key
- door
- switch 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
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/6414—Aspects relating to the door of the microwave heating apparatus
- H05B6/6417—Door interlocks of the microwave heating apparatus and related circuits
Description
産業上の利用分野
本発明は高周波加熱装置の安全装置に関するも
のであり、安価でかつ耐久性に優れた量産性の高
い高周波加熱装置のドアスイツチ安全装置を提供
するものである。
従来例の構成とその問題点
従来は第１図に示すように、ドア１を閉じた時
にドア１に取付けられ、バネ２によつて下方に引
張られたドアキー３によつて、ドアキー受け部で
あるフツク４にレバー軸５で支持された金属製の
レバー６を下方に押すことにより、フレーム７に
小ネジ１０で固定されたマイクロスイツチ８のア
クチユエータ９を押してマイクロスイツチ８を動
作させる構造になつていた。従つて数点の部品で
構成される為、動作不良の問題が多かつた。又、
レバー６は板金製の剛体であり、緩衝性が少ない
為に直接マイクロスイツチ８にドア１閉じの衝撃
力が加わり、マイクロスイツチ８のアクチユエー
タ９、接点バネ等の破損や摩耗による動作力の著
しい変化をきたす等、マイクロスイツチ８の寿命
を損う問題があつた。
発明の目的
本発明は上記の従来の欠点を解消するもので、
安全装置を量産性の高い構成とするとともにその
耐久性を向上することを目的とする。
発明の構成
上記目的を達するため、本発明は加熱室の前記
開口部を開閉するドアに設けられたとドアキー
と、前記ドアキーによつて操作されるスイツチレ
バーと、前記ドアキーが出没するドアキー受部
と、前記スイツチレバーによつてオン・オフされ
るマイクロスイツチとを備え、支点を有して可動
しうる前記スイツチレバーとドアキー受部とマイ
クロスイツチを保持し固定する部位とを樹脂で一
体形成する構成であり、量産性が高く、耐久性・
信頼性にすぐれている。
実施例の説明
以下、本発明の一実施例について第２図及び第
３図に基づいて説明する。
第２図において、フツク４とレバー６及びマイ
クロスイツチ８を固定しているスイツチ固定部１
１を、樹脂で一体成形し、スイツチ８をはめ込む
ことによつて構成される。レバー６は支持部Ａを
支点とし、スイツチ操作部Ｂ部でマイクロスイツ
チ８のアクチユエータ９を押し、頭部Ｃ部をドア
キー３で押す形状とした。これにより、ドアキー
３はマイクロスイツチ８を動作させるに必要な荷
重の約７割の荷重ですみ、動作が容易になつてい
る。また、レバー６の支点の位置をマイクロスイ
ツチ８のアクチユエータ９からドアキー３で押す
点までの距離よりアクチユエータ９から支点まで
の距離を長くしている。
第３図は、ドア１を閉じドアキー３によつて、
レバー６を押しスイツチ８をオン（ON）状態に
している図である。レバー６の傾斜部Ｆ部を屈曲
さえ、第２薄肉部Ｅ部の肉厚を薄くしたことによ
り、レバー６の先端の動きに比べ、支点である支
持部Ａ部付近の動きをわずかにした。これによ
り、樹脂製のレバー６のドア１の開閉による繰り
返し屈曲耐久性を著しく向上させることができ
た。又レバー６の薄肉部Ｅ部を肉厚を薄くするこ
とにより、マイクロスイツチ８への衝撃力の緩衝
効果と、長期にドアキー３によつて下方に押さえ
つけられ、レバー６に反りを与えられた時の復元
性を良くした。レバー６の第１薄肉部Ｄ部の肉厚
を薄くしたことにより、レバー６のバネ力を小さ
くし、ドアキー３の動作力の負担を少なくしたこ
とと、クリープ特性を良くした。
ところで上記第１薄肉部Ｄ部の肉厚は1.0mmが
最適であり、レバー６にドアキー３で常時押圧力
が加わつた状態において温度変化（−10℃〜80
℃）をうけた場合、従来のものではレバー６が変
形した状態で回復せず、スイツチがオンする迄の
力及びオフする迄の戻り力が低下するが、本実施
例では肉厚を0.9〜1.0mmの範囲内とし、この変化
を少なくして、レバー６の復元性も良好にし、長
期の使用における支障を解消することができた。
なお、実験結果の一例を下記に示す。
肉厚1.0mmと1.3mmでのヒートサイクルテスト
（−10℃〜80℃）100回後のレバー６先端での動作
力の比較結果を示す。
INDUSTRIAL APPLICATION FIELD The present invention relates to a safety device for a high-frequency heating device, and provides a door switch safety device for a high-frequency heating device that is inexpensive, has excellent durability, and is highly mass-producible. Conventional structure and its problems Conventionally, as shown in Fig. 1, when the door 1 is closed, the door key 3, which is attached to the door 1 and pulled downward by the spring 2, locks the key in the door key receiving part. By pushing downward a metal lever 6 supported by a lever shaft 5 on a certain hook 4, an actuator 9 of a micro switch 8 fixed to a frame 7 with machine screws 10 is pushed, thereby operating the micro switch 8. was. Therefore, since it is composed of several parts, there are many problems of malfunction. or,
The lever 6 is a rigid body made of sheet metal, and because it has low cushioning properties, the impact force of closing the door 1 is directly applied to the micro switch 8, and the operating force may change significantly due to damage or wear to the actuator 9 of the micro switch 8, contact springs, etc. There were problems such as shortening the life of the micro switch 8. OBJECT OF THE INVENTION The present invention overcomes the above-mentioned conventional drawbacks.
The purpose is to create a safety device with a configuration that is highly suitable for mass production and to improve its durability. Structure of the Invention In order to achieve the above object, the present invention includes a door key provided on a door for opening and closing the opening of a heating chamber, a switch lever operated by the door key, and a door key receiving part from which the door key appears. , a micro switch that is turned on and off by the switch lever, and a configuration in which the switch lever movable with a fulcrum, a door key receiving part, and a part for holding and fixing the micro switch are integrally formed of resin. It is highly mass-producible, durable and
Excellent reliability. DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In FIG. 2, the switch fixing part 1 fixes the hook 4, lever 6, and micro switch 8.
1 is integrally molded with resin, and the switch 8 is fitted into it. The lever 6 has a support part A as a fulcrum, a switch operating part B to push the actuator 9 of the micro switch 8, and a head part C to be pushed by the door key 3. As a result, the door key 3 only requires about 70% of the load required to operate the micro switch 8, making operation easier. Furthermore, the distance from the actuator 9 to the fulcrum of the lever 6 is set longer than the distance from the actuator 9 of the micro switch 8 to the point pressed by the door key 3. FIG. 3 shows that door 1 is closed and door key 3 is used to close door 1.
It is a diagram in which the lever 6 is pressed and the switch 8 is turned on. By bending the inclined part F of the lever 6 and reducing the thickness of the second thin part E, the movement near the support part A, which is the fulcrum, is made slight compared to the movement of the tip of the lever 6. As a result, the durability of the resin lever 6 against repeated bending due to opening and closing of the door 1 could be significantly improved. In addition, by reducing the thickness of the thin wall portion E of the lever 6, it is possible to reduce the impact force on the micro switch 8, and when the lever 6 is pressed downward by the door key 3 for a long period of time and the lever 6 is warped. improved the resiliency. By reducing the thickness of the first thin wall portion D of the lever 6, the spring force of the lever 6 is reduced, the burden of operating force on the door key 3 is reduced, and creep characteristics are improved. By the way, the optimal thickness of the first thin wall portion D is 1.0 mm, and when the lever 6 is constantly pressed with the door key 3, the temperature changes (-10°C to 80°C).
℃), in the conventional lever 6, the lever 6 is deformed and does not recover, and the force required to turn the switch on and the return force required to turn it off are reduced.However, in this embodiment, the wall thickness is 0.9~ By setting the change within the range of 1.0 mm, we were able to reduce this change, improve the restorability of the lever 6, and solve problems in long-term use. An example of the experimental results is shown below. The comparison results of the operating force at the tip of the lever 6 after 100 heat cycle tests (-10°C to 80°C) with wall thicknesses of 1.0 mm and 1.3 mm are shown.
【表】
上記のように、フツク４とレバー５及びスイツ
チ固定部１１を、樹脂で一体成形し、スイツチ８
を嵌込む構成によつて、単純な構造と確実な動作
で安価な耐久性の良い安全装置が可能となつた。
発明の効果
以上のように本発明によれば次の効果を得るこ
とができる。
(1) レバーの緩衝効果が極めて良く、スイツチに
ドア閉時の衝撃力が直接加わらない為、スイツ
チのアクチユエータや接点バネ等の破損が防止
でき、これらの摩耗も著しく少なくなる為、動
作力の変化も少なく耐久性が向上する。
(2) 樹脂一体としたことにより、二重絶縁構造と
なる。
(3) 構成部品点数が、スイツチを含む２点となる
為、作業性が極めて良くなり、安価に製作でき
る。[Table] As mentioned above, the hook 4, lever 5, and switch fixing part 11 are integrally molded with resin, and the switch 8
The configuration in which the safety device is fitted allows for an inexpensive, durable safety device with a simple structure and reliable operation. Effects of the Invention As described above, according to the present invention, the following effects can be obtained. (1) The lever has an extremely good buffering effect, and since the impact force when closing the door is not directly applied to the switch, damage to the switch's actuator and contact springs can be prevented, and wear on these parts is significantly reduced, reducing operating force. There is less change and durability is improved. (2) By integrating the resin, it has a double insulation structure. (3) Since the number of component parts is 2 including the switch, workability is extremely improved and manufacturing can be done at low cost.
第１図は従来の高周波加熱装置の安全装置を示
す一部断面側面図、第２図および第３図は本発明
の一実施例による高周波加熱装置の安全装置を示
す一部断面側面図、第４図は同装置の要部外観斜
視図、第５図は同装置のスイツチレバ６の外観斜
視図である。
１……ドア、２……バネ、３……ドアキー、４
……フツク、６……レバー（スイツチレバー）、
８……マイクロスイツチ、９……スイツチのアク
チユエータ、Ａ……支持部、Ｂ……スイツチ操作
部、Ｃ……頭部、Ｄ……第１薄肉部、Ｅ……第２
薄肉部、Ｆ……傾斜部。
FIG. 1 is a partially sectional side view showing a safety device of a conventional high-frequency heating device, and FIGS. 2 and 3 are partially sectional side views showing a safety device of a high-frequency heating device according to an embodiment of the present invention. 4 is a perspective view of the main part of the device, and FIG. 5 is a perspective view of the switch lever 6 of the device. 1...Door, 2...Spring, 3...Door key, 4
...Futsuku, 6...Lever (switch lever),
8...Micro switch, 9...Switch actuator, A...Support part, B...Switch operation part, C...Head, D...First thin part, E...Second
Thin part, F...slanted part.
Claims (1)
ーを設け、前記加熱室側には前記ドアの閉時に前
記ドアキーが係止するドアキー受部と、このドア
キー受部に前記ドアキーが係止した時にこのドア
キーにより操作されるスイツチレバーと、このス
イツチレバーによつてオン・オフされるスイツチ
とを備え、前記スイツチレバーと、前記スイツチ
レバーの支持部と、前記ドアキー受部と、前記ス
イツチを保持し固定する固定部とを樹脂で一体形
成し、前記スイツチレバーは前記支持部を支点と
して樹脂の弾性にて可動する構成とした高周波加
熱装置の安全装置。1. A door key is provided on the door that opens and closes the front opening of the heating chamber, and the heating chamber side includes a door key receiving portion where the door key locks when the door is closed, and a door key receiving portion when the door key locks with the door key receiving portion. The switch includes a switch lever operated by the door key and a switch turned on and off by the switch lever, the switch lever, a support part for the switch lever, the door key receiving part, and a switch holding the switch. A safety device for a high-frequency heating device, wherein a fixing part to be fixed is integrally formed with resin, and the switch lever is movable by the elasticity of the resin with the support part as a fulcrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13751482A JPS5927134A (en) | 1982-08-07 | 1982-08-07 | Safety device for high-frequency heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13751482A JPS5927134A (en) | 1982-08-07 | 1982-08-07 | Safety device for high-frequency heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5927134A JPS5927134A (en) | 1984-02-13 |
| JPH0225101B2 true JPH0225101B2 (en) | 1990-05-31 |
Family
ID=15200444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13751482A Granted JPS5927134A (en) | 1982-08-07 | 1982-08-07 | Safety device for high-frequency heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5927134A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083922Y2 (en) * | 1990-04-27 | 1996-01-31 | 株式会社小糸製作所 | Lens drive mechanism for variable light distribution headlights |
| WO2022131191A1 (en) | 2020-12-16 | 2022-06-23 | 富士フイルム株式会社 | Composition, membrane, optical filter, solid image pickup element, image display apparatus, and infrared ray sensor |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60245936A (en) * | 1984-05-21 | 1985-12-05 | Matsushita Electric Ind Co Ltd | High-frequency heating equipment |
| JPS60263038A (en) * | 1984-06-11 | 1985-12-26 | Matsushita Electric Ind Co Ltd | High-frequency heating device |
| JPS60263037A (en) * | 1984-06-11 | 1985-12-26 | Matsushita Electric Ind Co Ltd | High-frequency heating device |
| JPS62223710A (en) * | 1986-03-26 | 1987-10-01 | Ocean Cable Co Ltd | Rotary connector for optical fiber cable |
| JPS62245029A (en) * | 1986-04-18 | 1987-10-26 | Matsushita Electric Ind Co Ltd | High frequency heating device |
| JPS63124009A (en) * | 1986-11-13 | 1988-05-27 | Tatsuta Electric Wire & Cable Co Ltd | Multicore optical rotary connector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5817098Y2 (en) * | 1978-04-04 | 1983-04-06 | 三洋電機株式会社 | Microwave oven latch mechanism |
-
1982
- 1982-08-07 JP JP13751482A patent/JPS5927134A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH083922Y2 (en) * | 1990-04-27 | 1996-01-31 | 株式会社小糸製作所 | Lens drive mechanism for variable light distribution headlights |
| WO2022131191A1 (en) | 2020-12-16 | 2022-06-23 | 富士フイルム株式会社 | Composition, membrane, optical filter, solid image pickup element, image display apparatus, and infrared ray sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5927134A (en) | 1984-02-13 |
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