JPS634891Y2 - - Google Patents

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、高周波発生装置の電源回路を簡略化
するとともに扉の開放時に人体及び通信等に悪影
響を及ぼす高周波エネルギーの外部漏洩を防止す
るスイツチ開閉機構を備えた電子レンジに関する
ものである。[Detailed description of the invention] [Field of industrial application] The present invention is a switch that simplifies the power supply circuit of a high-frequency generator and prevents external leakage of high-frequency energy that has a negative impact on the human body and communications when the door is opened. This invention relates to a microwave oven equipped with an opening/closing mechanism.

〔従来技術〕[Prior art]

第１図は従来の電子レンジの高周波発生装置の
電源回路の一例を示す要部結線図である。この電
源回路によれば、加熱室の扉が完全に閉成した状
態ではこの扉の開閉に応動するドアスイツチ１
と、扉と本体との間に設けらたラツチ機構の係脱
動作に応動するラツチスイツチ２がともに閉成し
ているので、常開形の押釦式調理スイツチ３を押
圧すると、リレー４が働きその主開閉器５，６が
閉成するとともにこのリレー４が自己保持される
ので、電源７より高周波発生装置８へ電力が供給
され、加熱室内に高周波エネルギーが供給され
る。そして、このような従来の高周波発生装置の
電源回路では、扉が完全に閉成した場合のみ、調
理スイツチ３で高周波発生装置８への電力を供給
できるようにしたり、またドアスイツチ１或いは
ラツチスイツチ２が開放すると前述の電力供給を
停止させ、この状態では調理スイツチ３を押圧し
ても電力供給が行なえないようにするために、第
１図で示したように、リレー４を含む複雑、高価
な回路構成を必要とした。 FIG. 1 is a main part wiring diagram showing an example of a power supply circuit of a conventional high frequency generator for a microwave oven. According to this power supply circuit, when the door of the heating chamber is completely closed, the door switch 1 responds to the opening and closing of this door.
The latch switch 2, which responds to the engagement/disengagement of the latch mechanism provided between the door and the main body, is both closed, so when the normally open push-button cooking switch 3 is pressed, the relay 4 is activated. Since the main switches 5 and 6 are closed and the relay 4 is self-held, power is supplied from the power source 7 to the high frequency generator 8, and high frequency energy is supplied into the heating chamber. In the power supply circuit of such a conventional high frequency generator, the cooking switch 3 can supply power to the high frequency generator 8 only when the door is completely closed, and the door switch 1 or the latch switch 2 is When the cooking switch 3 is opened, the aforementioned power supply is stopped, and in this state, even if the cooking switch 3 is pressed, power cannot be supplied.As shown in FIG. 1, a complicated and expensive circuit including a relay 4 is installed. required configuration.

〔考案が解決しようとする問題点〕[Problem that the invention attempts to solve]

そこで、本考案はこのような複雑、高価な回路
構成を排除し、調理スイツチが扉の閉成時のみ閉
成可能となる機械的構造を備えることにより高周
波発生装置の電源回路を簡略化するとともに、こ
の調理スイツチが扉の開放に伴ない開放され、誤
操作による高周波の外部漏洩すら皆無となるよう
にした電子レンジを提供するものである。 Therefore, the present invention eliminates such a complicated and expensive circuit configuration, and simplifies the power supply circuit of the high frequency generator by providing a mechanical structure in which the cooking switch can be closed only when the door is closed. To provide a microwave oven in which this cooking switch is opened when the door is opened, and there is no leakage of high frequency waves to the outside due to erroneous operation.

〔問題点を解決するための手段〕[Means for solving problems]

上記問題点を解決するために、本考案において
は、スイツチを支持したスイツチ支持体を、調理
釦の操作によつてスイツチを閉成可能な位置と、
調理釦を操作してもスイツチを閉成し得ない位置
とに移動可能にして、扉閉成時にのみスイツチ支
持体を閉成可能な位置（閉成準備位置）に移動配
置せしめるように構成している。 In order to solve the above problems, in the present invention, the switch support supporting the switch is moved to a position where the switch can be closed by operating the cooking button;
The switch is configured to be movable to a position where it cannot be closed even when the cooking button is operated, and to move the switch support to a position where it can be closed (closing preparation position) only when the door is closed. ing.

〔実施例〕〔Example〕

以下に本考案を具体化した一実施例を第２図乃
至第４図を参照して説明する。 An embodiment embodying the present invention will be described below with reference to FIGS. 2 to 4.

第２図は本考案に係る電子レンジの扉開放状態
を示す斜視図、第３図はその扉閉成時の要部断面
図であり、図中９は本体１０内に設けられた加熱
室１１の前面開口部を開閉する扉、１２はこの扉
９の前面右寄りに設けれた把手、１２ａはこの把
手の中央部に把手１２を貫通するように設けられ
た操作釦で扉開放時に押圧操作されるものであ
る。１３はこの扉９の本体１０側に設けられた突
出片で、扉閉成時には加熱室１１の前面周縁部に
形成された透孔１１ａより本体１０内へ挿入され
るものである。１４は同じく扉９の内部で軸１４
ａに枢支され、その先端部が本体１０側に突出し
て設けられたフツク片で、扉９の閉成時には加熱
室１１の前面周縁部に形成された透孔１１ｂより
本体内へ挿入され、本体１０内部に取り付けられ
た係止部１５に係合し扉９の閉成状態を保持する
ためのものである。１６はこの係止状態を保持す
るための弾性力をフツク片１４に付勢するばね、
１７は扉９内で軸１７ａにより枢支され前記把手
１２の操作釦１２ａの押圧操作をフツク片１４に
伝達するための連杆であり、操作釦１２ａを押圧
するとフツク片１４がばね１６の張力に抗して係
止部１５より離脱せしめられ、扉９が開放可能と
なる。１８は本体１０内の係止部１５近傍に配置
されたラツチスイツチで、フツク片１４が係止部
１５に係脱されるのに伴ないこのフツク片１４の
先端部に押圧、若しくは押圧解除されることによ
り開閉制御される。１９は本体１０前面上部の操
作パネル１０ａ右寄りに設けられた調理開始用の
調理釦である。２０は本体１０内にに設けられた
第１の回動杆で、軸２０ａに枢支されるとともに
ばね２１の弾性力により常にその一端２０ｂが扉
９方向に付勢され、扉９の閉成時には前記突出片
１３に当接、押圧され回動するようになつてお
り、その他端２０ｃは常にばね２２の弾性力が付
勢されている係止杆２３の先端と当接し、これを
ばね２２の弾性力に抗して支持している。２４は
スイツチ２５を支持するスイツチ支持体で、この
第１の回動杆２０の一端２０ｂ近傍に軸２４ａに
より枢支され、常にはばね２６により回動杆２０
の一端２０ｂと当接するように付勢され、更に、
その一部に設けられた長孔２４ｂ内には本体１０
に固定された固定軸２７が遊嵌するように構成さ
れている。２５ａはスイツチ２５を開閉するため
の開閉用アクチユエータで、スイツチ２５の扉９
の反対側に取付けられ、常にはスイツチ２５を開
放する方向の弾性力が付勢されている。２８は軸
２８ａに枢支されたスイツチ作動体としての第２
の回動杆で、その一端２８ｂを前記スイツチ２５
の開閉用アクチユエータ２５ａに対向させるとと
もに常にはばね２９の張力によりその他端２８ｃ
を前記調理釦１９の押圧操作を伝達する伝達杆３
０の端部に当接させている。尚、伝達杆３０につ
いて詳述すると、この伝達杆３０はその略中央に
設けられた第１の突部３０ａを本体１０内に固定
された支枠３１の内部に伝達杆３０を包囲するよ
うに形成された傾斜孔３１ａ内に嵌合させること
により、前記調理釦１９が押圧操作されたとき矢
印方向に回転しながら本体１０の奥部へ移動せし
められるようになつており、この時、同じく本体
１０前面より見て伝達杆３０上のその後方部に設
けられた第２の突部３０ｂが前記係止杆２３の先
端鉤状部に係止されるようになつている。 FIG. 2 is a perspective view showing the microwave oven according to the present invention with the door open, and FIG. 3 is a sectional view of the main part when the door is closed. 12 is a handle provided on the front right side of the door 9, and 12a is an operation button provided in the center of the handle so as to pass through the handle 12, and is pressed when the door is opened. It is something that Reference numeral 13 denotes a projecting piece provided on the main body 10 side of the door 9, which is inserted into the main body 10 through a through hole 11a formed at the front peripheral edge of the heating chamber 11 when the door is closed. 14 is also the shaft 14 inside the door 9.
It is a hook piece that is pivotally supported by a and whose tip part protrudes toward the main body 10 side, and when the door 9 is closed, it is inserted into the main body through a through hole 11b formed in the front peripheral part of the heating chamber 11, It engages with a locking portion 15 installed inside the main body 10 to maintain the closed state of the door 9. 16 is a spring that applies elastic force to the hook piece 14 to maintain this locked state;
Reference numeral 17 denotes a link that is pivotally supported by a shaft 17a inside the door 9 and transmits the pressing operation of the operation button 12a of the handle 12 to the hook piece 14. When the operation button 12a is pressed, the hook piece 14 is moved by the tension of the spring 16. The door 9 is disengaged from the locking portion 15 against the pressure, and the door 9 can be opened. Reference numeral 18 denotes a latch switch disposed near the locking part 15 in the main body 10, and as the hook piece 14 is engaged and disengaged from the locking part 15, the latch switch 18 is pressed against or released from the tip of the hook piece 14. Opening/closing is controlled by this. Reference numeral 19 denotes a cooking button for starting cooking provided on the upper right side of the operation panel 10a on the front surface of the main body 10. Reference numeral 20 denotes a first rotating rod provided in the main body 10, which is pivotally supported by a shaft 20a, and whose one end 20b is always urged in the direction of the door 9 by the elastic force of a spring 21, so that the door 9 can be closed. At times, the protruding piece 13 contacts and presses the protruding piece 13 to rotate, and the other end 20c always contacts the tip of the locking rod 23, which is biased by the elastic force of the spring 22. It supports against the elastic force of. Reference numeral 24 denotes a switch support for supporting the switch 25, which is pivotally supported near one end 20b of the first rotating rod 20 by a shaft 24a, and is always supported by a spring 26.
is urged to come into contact with one end 20b of the
The main body 10 is located in the elongated hole 24b provided in a part of the elongated hole 24b.
A fixed shaft 27 fixed thereto is configured to loosely fit therein. 25a is an opening/closing actuator for opening/closing the switch 25;
It is attached to the opposite side of the switch 25, and is normally biased with an elastic force in the direction of opening the switch 25. 28 is a second switch actuating body pivotally supported on the shaft 28a.
With the rotating rod, one end 28b is connected to the switch 25.
The other end 28c is opposed to the opening/closing actuator 25a and is always held under the tension of the spring 29.
a transmission rod 3 that transmits the pressing operation of the cooking button 19;
It is brought into contact with the end of 0. In addition, to explain the transmission rod 30 in detail, this transmission rod 30 has a first protrusion 30a provided approximately in the center inside a support frame 31 fixed in the main body 10 so as to surround the transmission rod 30. By fitting into the formed inclined hole 31a, when the cooking button 19 is pressed, it can be moved to the inner part of the main body 10 while rotating in the direction of the arrow. A second protrusion 30b provided on the rear portion of the transmission rod 30 when viewed from the front side of the transmission rod 10 is adapted to be locked to a hook-shaped portion at the distal end of the locking rod 23.

以上のような構成よりなる本機構において、先
ず扉開放時では、突出片１３並びにフツク片１４
が本体内へ挿入されていないためラツチスイツチ
１８が解放されたままとなつているとともに、第
１の回動杆２０並びにスイツチ支持体２４は夫々
ばね２１，２６の弾性力により扉９方向に付勢さ
れており、また係止杆２３もばね２２により図示
する位置より幾分時計方向に回動せしめられてい
る。従つて、この時、仮りに操作者が不注意にも
本来不要な調理釦１９の押圧操作を行なつて第２
の回動杆２８を回動せしめても、この回動杆２８
の一端２８ｂがスイツチ２５の開閉用アクチユエ
ータ２５を押圧してスイツチ２５を閉成せしめる
ことは出来ず、また伝達杆３０の第２の突部３０
ｂが係止杆２３に係止されることもなく、操作者
が調理釦１９の押圧操作を中止すると第２の回動
杆２８並びに伝達杆３０はばね２９により速やか
に図示する位置に復帰する。 In this mechanism configured as described above, first, when the door is opened, the protruding piece 13 and the hook piece 14
Since the latch switch 18 is not inserted into the main body, the latch switch 18 remains released, and the first pivot rod 20 and the switch support 24 are urged in the direction of the door 9 by the elastic force of the springs 21 and 26, respectively. The locking rod 23 is also rotated slightly clockwise from the position shown in the figure by the spring 22. Therefore, at this time, if the operator inadvertently presses the cooking button 19 which is not necessary in the first place,
Even if the rotating rod 28 is rotated, this rotating rod 28
One end 28b cannot press the opening/closing actuator 25 of the switch 25 to close the switch 25, and the second protrusion 30 of the transmission rod 30
When the operator stops pressing the cooking button 19 without being locked by the locking rod 23, the second rotation rod 28 and the transmission rod 30 are quickly returned to the illustrated positions by the spring 29. .

次に、図示した扉９の閉成状態で調理釦１９を
押圧した場合を説明すると、今度は第１の回動杆
２０並びにスイツチ支持体２４が共に突出片１３
の本体１０内への挿入により回動せしめられ、ス
イツチ２５をその閉成準備位置へ移動せしめてい
るので、調理釦１９の押圧操作に伴なう第２の回
動杆２８の回動により開閉用アクチユエータ２５
ａが回動杆２８の一端２８ｂにより押圧されスイ
ツチ２５を閉成し得、また係止杆２３もまた伝達
杆３０の第２の突部３０ｂを係止し、伝達杆３０
をその位置に保持し得るため、その後調理釦１９
の押圧を解除しても、スイツチ２５は閉成状態を
持続する。尚、この時、ラツチスイツチ１８はフ
ツク片１４に閉成せしめられていることは勿論で
ある。 Next, the case where the cooking button 19 is pressed with the door 9 in the closed state shown in the figure will be explained. This time, both the first rotating rod 20 and the switch support 24
The switch 25 is rotated when inserted into the main body 10, and the switch 25 is moved to its closing preparation position. Actuator 25 for
a can be pressed by one end 28b of the rotating rod 28 to close the switch 25, and the locking rod 23 also locks the second protrusion 30b of the transmission rod 30, so that the transmission rod 30
The cooking button 19 can then be held in that position.
Even if the pressure on the switch 25 is released, the switch 25 remains closed. Of course, at this time, the latch switch 18 is closed by the hook piece 14.

そして、このようなスイツチ２５の閉成保持状
態はフツク片１４が係止部１５より離脱せしめら
れラツチスイツチ１８が解放し、その後扉９が解
放され、突出片１３が本体外へ抜け出る時、これ
に伴ない第１の回動杆２０並びにスイツチ支持体
２４が夫々ばね２１，２６により回動復帰するこ
とにより解かれ、スイツチ２５が解放するととも
に、係止杆２３の回動により伝達杆３０並びに第
２の回動杆２８も回動復帰する。 The closed and held state of the switch 25 is maintained when the hook piece 14 is released from the locking part 15, the latch switch 18 is released, and then the door 9 is released and the protruding piece 13 comes out of the main body. Accordingly, the first rotation rod 20 and the switch support 24 are released by being rotated back by the springs 21 and 26, respectively, and the switch 25 is released, and the rotation of the locking rod 23 causes the transmission rod 30 and the The rotation rod 28 of No. 2 also returns to rotation.

以上のように本機構では、扉の閉成により本体
内へ挿入されスイツチ支持体をスイツチの閉成準
備位置に移動せしめるような突出片を扉に設ける
ことにより、扉の閉成時のみスイツチの閉成操作
を可能とするとともに、そのスイツチの閉成保持
状態を扉解放操作に連動して解除せしめるように
したものであり、このスイツチ開閉機構を備えた
電子レンジの電源回路を簡略化して示すと、第４
図のようになる。即ち、同図は第１図の従来例と
対比して、７が電源、８が高周波発生装置、１８
がラツチスイツチ、２５が調理用のスイツチであ
り、これは従来例と比べてドアスイツチ、調理開
始用のスイツチ、リレー式主開閉器を一個のスイ
ツチに置換えた極めた簡素なものであり、しか
も、電子レンジの安全基準にも十分合致するもの
である。 As described above, in this mechanism, by providing a protruding piece on the door that is inserted into the main body when the door is closed and moves the switch support to the switch closing preparation position, the switch is activated only when the door is closed. In addition to enabling the closing operation, the closed state of the switch is released in conjunction with the door opening operation. The power circuit of a microwave oven equipped with this switch opening/closing mechanism is shown in a simplified form. and the fourth
It will look like the figure. That is, in contrast to the conventional example shown in FIG. 1, this figure shows a power source 7, a high frequency generator 8, and
is a latch switch, and 25 is a cooking switch.This is an extremely simple switch compared to the conventional example, replacing the door switch, cooking start switch, and relay type main switch with one switch. It fully meets safety standards for microwave ovens.

尚、本実施例では扉に設けられ、扉閉成時に本
体内へ挿入されスイツチを閉成準備位置へ移動せ
しめる突出片をフツク片と独立して設けた構成を
説明したが、本考案はこのようなものに限定され
ず、フツク片に突出片の作用をも兼備する構成に
してもよく、その場合には扉解放に先立つフツク
片の係止部からの離脱によりラツチスイツチが解
放され、継いでフツク片の本体外への移動により
調理スイツチが解放されることになる。 In this embodiment, a configuration was described in which a protruding piece that is provided on the door and is inserted into the main body when the door is closed to move the switch to the closing preparation position is provided independently of the hook piece. However, the hook piece may also have the function of a protruding piece. In that case, the latch switch is released when the hook piece is released from the locking part prior to opening the door, and then the latch switch is released. The cooking switch is released by moving the hook piece out of the main body.

〔考案の効果〕[Effect of idea]

以上詳述したように本考案は、スイツチをスイ
ツチ支持体とともに閉成可能な閉成準備位置と閉
成し得ない不作用位置とに選択的に移動可能とし
て、扉閉成時にのみスイツチを閉成可能な閉成準
備位置に移動配置せしめる構成であるから、扉が
解放した状態で誤つて調理釦を操作してもスイツ
チが閉成される虞れは全くなく、極めて安全であ
る。しかも、スイツチ閉成状態において扉を開い
た場合においては、その扉の解放に伴つてスイツ
チ作動体をスイツチから離隔する位置に移動させ
ると同時に、スイツチ支持体をもスイツチもろと
もスイツチが解放する位置に直ちに移動退避させ
る構成であるから、仮にスイツチ作動体を保持す
る機構の解除動作が多少遅れた場合であつても、
直ちにスイツチを開放することができ、極めて安
全である。 As described in detail above, the present invention enables the switch to be selectively moved together with the switch support between the closing preparation position where it can be closed and the inactive position where it cannot be closed, so that the switch is closed only when the door is closed. Since the cooking button is moved to the closing preparation position where it can be opened, there is no risk of the switch being closed even if the cooking button is accidentally operated with the door open, making it extremely safe. Moreover, when the door is opened while the switch is closed, the switch actuating body is moved to a position away from the switch as the door is opened, and at the same time, the switch supporting body is also moved to the position where the switch is released together with the switch. Since the structure is such that the switch is immediately moved and retracted, even if there is a slight delay in the release operation of the mechanism that holds the switch operating body,
The switch can be opened immediately and is extremely safe.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の電子レンジの電源回路例を示す
要部結線図、第２図は本考案に係る電子レンジの
扉開放状態を示す斜視図、第３図はその要部断面
図、第４図はその電源回路図である。 図中、８は高周波発生装置、９は扉、１０は本
体、１３は突出片、１９は調理釦、２４はスイツ
チ支持体、２５はスイツチ、２８はスイツチ作動
体としての第２の回動杆、２３と３０ｂは保持機
構を構成する係止杆と伝達杆上の突部である。 Fig. 1 is a wiring diagram of main parts showing an example of the power supply circuit of a conventional microwave oven, Fig. 2 is a perspective view showing the microwave oven according to the present invention with the door open, Fig. 3 is a sectional view of its main parts, and Fig. 4 The figure shows the power supply circuit diagram. In the figure, 8 is a high frequency generator, 9 is a door, 10 is a main body, 13 is a protruding piece, 19 is a cooking button, 24 is a switch support, 25 is a switch, and 28 is a second rotating rod as a switch operating body. , 23 and 30b are protrusions on the locking rod and the transmission rod that constitute the holding mechanism.

Claims (1)

【実用新案登録請求の範囲】 内部に加熱室を備えた本体１０と、この本体１
０に装着され前記加熱室の前面開口部を開閉する
扉９と、前記本体１０内に設けられ、前記加熱室
内に高周波を供給する高周波発生装置８と、この
高周波発生装置８の作動を制御するためその電源
回路に接続されたスイツチ２５と、このスイツチ
２５を開閉するため本体前面に設けられた調理釦
１９とを備えた電子レンジにおいて、 前記スイツチ２５を支持するとともに本体内で
移動可能に設けられ、常には一方向の弾性力が付
勢されているスイツチ支持体２４と、 扉９の一部に設けられ、扉閉成時には本体内へ
挿入され前記弾性力に抗してスイツチ支持体２４
をスイツチ２５の閉成準備位置に移動せしめる突
出片１３と、 本体内に前記調理釦１９の操作によつて移動可
能に設けられ、かつ扉閉成時に閉成準備位置にあ
るスイツチ支持体２４上のスイツチ２５を閉成可
能なスイツチ作動体２８と、 扉閉成時には調理釦１９の押圧操作により移動
せしめられたスイツチ作動体２８をスイツチ２５
の閉成位置に保持し、その保持動作が扉開放に伴
なう突出片１３の移動により解除される保持機構
２３，３０ｂとを有し、 扉閉成時のみ閉成準備位置にあるスイツチ支持
体２４上のスイツチ２５が調理釦１９の押圧操作
に伴なうスイツチ作動体２８の移動により閉成、
保持されるとともに、扉９の開放動作に連動して
スイツチ２５が開放されるようにしたことを特徴
とする電子レンジ。[Claims for Utility Model Registration] A main body 10 equipped with a heating chamber inside, and this main body 1
0, which opens and closes the front opening of the heating chamber; a high-frequency generator 8, which is provided in the main body 10 and supplies high-frequency waves into the heating chamber; and a high-frequency generator 8, which controls the operation of the high-frequency generator 8. Therefore, in a microwave oven equipped with a switch 25 connected to the power supply circuit and a cooking button 19 provided on the front of the main body for opening and closing the switch 25, a cooking button 19 is provided that supports the switch 25 and is movable within the main body. The switch support 24 is provided in a part of the door 9 and inserted into the main body when the door is closed, and the switch support 24 resists the elastic force.
a protruding piece 13 that moves the switch 25 to the closing preparation position; and a switch support 24 that is movably provided in the main body by the operation of the cooking button 19 and is in the closing preparation position when the door is closed. a switch operating body 28 that can close the switch 25; and a switch operating body 28 that can close the switch 25, which is moved by pressing the cooking button 19 when the door is closed.
The switch support has a holding mechanism 23, 30b which is held in the closed position and whose holding operation is released by the movement of the protruding piece 13 as the door is opened, and which is in the closing preparation position only when the door is closed. The switch 25 on the body 24 is closed by the movement of the switch operating body 28 as the cooking button 19 is pressed;
A microwave oven characterized in that a switch 25 is opened in conjunction with the opening operation of a door 9.