KR910009024Y1 - Door of electronic range - Google Patents

Door of electronic range Download PDF

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Publication number
KR910009024Y1
KR910009024Y1 KR2019870014003U KR870014003U KR910009024Y1 KR 910009024 Y1 KR910009024 Y1 KR 910009024Y1 KR 2019870014003 U KR2019870014003 U KR 2019870014003U KR 870014003 U KR870014003 U KR 870014003U KR 910009024 Y1 KR910009024 Y1 KR 910009024Y1
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South Korea
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door
ptr
transistor
terminal
output
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KR2019870014003U
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Korean (ko)
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KR890005200U (en
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황덕수
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금성일렉트론 주식회사
문정환
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Priority to KR2019870014003U priority Critical patent/KR910009024Y1/en
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    • 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

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

내용 없음.No content.

Description

전자레인지의 도어개폐장치Microwave Door Opener

제1도 및 제2도는 본 고안 도어개폐장치의 구성을 보인 설명도로서, 제1도는 도어개폐장치의 사시도.1 and 2 are explanatory views showing the configuration of the door opening and closing device of the present invention, Figure 1 is a perspective view of the door opening and closing device.

제2도는 도어개폐장치의 도어오픈 어셈블리를 보인 요부 확대사시도.Figure 2 is an enlarged perspective view of the main part showing the door open assembly of the door opening and closing device.

제3도는 본 고안 도어개폐장치의 블록도.3 is a block diagram of the door opening and closing device of the present invention.

제4도는 본 고안 도어개폐장치의 상세회로도.4 is a detailed circuit diagram of the door opening and closing device of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

1 : 전원부 2 : 로직회로1: power supply 2: logic circuit

2a : 리세트회로 3 : 모타구동회로2a: reset circuit 3: motor drive circuit

4 : 도어오픈어셈블리 4a : 원호상으로된 랙4: door open assembly 4a: arc-shaped rack

4b : 피니언 4c : 차단판4b: Pinion 4c: Blocking Board

4d : 도어 4e : 요입부4d: door 4e: recess

SW1: 도어개폐스위치 PC1, PC2:포로카플러SW 1 : Door open / close switch PC 1 , PC 2 : Poro coupler

PD1, PD2: 발광다이오드 PTR1, PTR2: 수광트랜지스터PD 1 , PD 2 : light emitting diodes PTR 1 , PTR 2 : light receiving transistor

FF1: 플립플롭 ExOR1: 익스클루시브오아게이트FF 1 : Flip-Flop ExOR 1 : Exclusive Oagate

AD1, AD2: 앤드게이트 TR1-TR4: 트랜지스터AD 1 , AD 2 : AND gate TR 1 -TR 4 : transistor

R1-R4: 저항 C1, C2: 콘덴서R 1 -R 4 : Resistor C 1 , C 2 : Capacitor

본 고안은 모터를 이용하여 전자레인지의 도어를 열수 있게한 전자레인지의 도어개폐장치에 관한 것으로, 특히 도어개폐스위치의 조작에 따라 모타가 구동되어 도어를 자동으로 열수있게 한 전자레인의 도어개폐장치에 관한 것이다.The present invention relates to a door opening and closing device of the microwave oven that can open the door of the microwave oven using a motor, in particular, the door opening and closing device of the electronic lane that the motor is driven by the operation of the door opening and closing switch to open the door automatically. It is about.

종래의 전자레인지는 버튼을 눌러 도어를 열거나 또는 손감이를 당겨 도어를 열게 구성하였으므로 도어를 열 경우에 많은 힘을 가해야 됨은 물론 대개의 경우에 사용자가 음식물을 양손으로 들고 있으므로 전자레인지의 문을 열때 음식물을 내려놓고 문을 열어야 되는 번거로움이 뒤따르는 결함이 있었다.In the conventional microwave oven, the door is opened by pressing a button or the handle is pulled to open the door. Therefore, when the door is opened, much force is required, and in most cases, the user holds food with both hands. There was a flaw that was followed by the hassle of putting food down and opening the door.

본 고안은 이와같은 종래의 결함을 감안하여 간단한 도어개폐스위치의 조작으로 전자레인지의 도어를 간편히 열수 있게 안출한 것으로 이를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.The present invention has been conceived in order to easily open the door of the microwave oven by a simple operation of the door opening and closing switch in view of such a conventional defect described in detail by the accompanying drawings as follows.

제1도 및 제2도는 본 고안 도어개폐장치의 구성을 보인 사시도로서 이에 도시한 바와같이 원호상으로된 랙(4a)의 일단의 상부를 절곡하여 도어(4d)의 내면 일측에 고정하고, 그 랙(4a)의 타단은 전자레인지의 본체(4f)하부의 요입부(4e)를 통해 내부에 삽입하여 모타(M1)의 측에 고정된 피니언(4b)과 치합하고, 상기 랙(4a)의 타단에는 차단판(4c)이 부착되어 구성되어 있다.1 and 2 are perspective views showing the structure of the door opening and closing device of the present invention, as shown in the figure, bending an upper portion of one end of an arced rack 4a and fixing it to one side of the inner surface of the door 4d. The other end of the rack 4a is inserted through the indentation 4e of the lower part of the main body 4f of the microwave oven and engaged with the pinion 4b fixed to the side of the motor M 1 , and the rack 4a The other end of the blocking plate 4c is attached.

그리고, 제3도는 도어개폐장치의 블록도로서 이에 도시한 바와같이 전원플러그에 접속되어 각 부위에 동작전원을 공급하는 전원부(1)와, 도어개폐스위치(SW1)의 조작에 따라 도어를 열고 닫는 신호를 감지하는 포토카플러(PC1), (PC2)와, 상기 포토카플러(PC1), (PC2)의 출력신호에 따라 제어신호를 출력하는 로직회로(2)와, 상기로직회로(2)의 제어신호에 따라 모타(M1)를 구동 및 정지시키는 모타구동회로(3)와, 상기 모타구동회로(3)의 구동방향에 따라 도어를 개폐하는 상기 도어오픈어셈블리(4)로 구성한 것이고, 제4도는 본 고안의 상세회로도로서, 전원단자(Vcc1)가 포토카플러(PC1), (PC2)의 발광다이오드(PD1), (PD2)를 통해 접속함과 아울러 상기 전윈단자(Vcc1)는 저항(R1), (R2)을 통해 수광트랜지스터(PTR1), (PTR2)의 콜렉터 및 로직회로(2)의 익스클루시브오아게이트(ExOR1)의 입력단자에 접속히여 그의 출력단자를 플립플롭(FF1)의 입력단자(J), (K)에 공통접속하고, 플립플롭(FF1)의 클럭단자(CK)는 도이개폐스위치(SW1)를 접속하여 플립플롭(FF1)의 리세트단자(RS)를 저항(R3), (R4) 및 콘덴서(C1), (C2)로된 리세토회로(2a)를 접속하고, 플립플롭(FF1)의 출력단자(Q), (Q)는 상기 수광트랜지스터(PTR1), (PTR2)의 콜랙터측과 함께 앤드게이트(AD1), (AD2)를 각기 통해 모타구동회로(3)의 트랜지스터(TR1), (TR2)의 베이스에 접속하여 그 접속점을 트랜지스터(TR4), (TR3)의 베이스에 접속하고, 상기 트랜지스터(TR1), (TR3), (TR2), (TR4)의 에미터 및 클렉터를 모타(M1)에 접속하여 구성한 것으로 미설명부호Vcc2는 전원단자이다.3 is a block diagram of the door opening and closing device, as shown therein, which is connected to the power plug to open the door according to the operation of the power supply unit 1 and the door opening / closing switch SW 1 for supplying operation power to each part. and a photo coupler (PC 1), (PC 2) for detecting a closing signal, and a logic circuit (2) for outputting a control signal according to an output signal of the photo coupler (PC 1), (PC 2), the logic circuit To the motor driving circuit 3 for driving and stopping the motor M 1 according to the control signal of (2), and to the door opening assembly 4 for opening and closing the door in accordance with the driving direction of the motor driving circuit 3. 4 is a detailed circuit diagram of the present invention, in which the power supply terminal Vcc 1 is connected through the light emitting diodes PD 1 and PD 2 of the photocoupler PC 1 and PC 2 . ripening of Power terminal (Vcc 1) is a resistance (R 1), the light-receiving transistor through a (R 2) (PTR 1), (PTR 2) a collector and a logic circuit (2) Inclusive Iowa gate clock terminal of the (ExOR 1) connected in common, and a flip-flop (FF 1) a connection hiyeo its output terminal to an input terminal to an input terminal (J), (K) of the flip-flop (FF 1) of the (CK ) Is connected to the opening / closing switch SW 1 to connect the reset terminal RS of the flip-flop FF 1 to resistors R 3 , R 4 , and capacitors C 1 , C 2 . The seto circuit 2a is connected, and the output terminals Q and Q of the flip-flop FF 1 together with the collector side of the light receiving transistors PTR 1 and PTR 2 are connected to the AND gate AD 1 , (AD 2 ) are connected to the bases of the transistors TR 1 and TR 2 of the motor driving circuit 3 respectively, and the connection points thereof are connected to the bases of the transistors TR 4 and TR 3, respectively. The emitters and selectors of (TR 1 ), (TR 3 ), (TR 2 ) and (TR 4 ) are connected to the motor (M 1 ). Unexplained symbol Vcc 2 is a power supply terminal.

이와같이 구성된 본 고안의 작용효과를 상세히 설명하면 다음과 같다. 전원단자(Vcc1), (Vcc2)에 전원이 인가되고, 전원스위치를 온시키면, 초기에 저항(R3, R4), 콘덴 서(C1, C2)로된 리세트회로(2a)에서 저전위가 출력되므로 플립플롭(FF1)은 리세트되지 않아 출력단자(Q), ()로 저전위 및 고전위를 출력하고, 일정시간이후 리세트단자(RS)에는 고전위가 인가된다Referring to the effects of the present invention configured in this way in detail as follows. When power is applied to the power supply terminals Vcc 1 and Vcc 2 and the power switch is turned on, a reset circuit 2a consisting of resistors R 3 and R 4 and capacitors C 1 and C 2 is initially provided. Since the low potential is output from), the flip-flop (FF 1 ) is not reset, so the output terminals (Q), ( Low potential and high potential are outputted at), and high potential is applied to the reset terminal RS after a certain time.

이와같은 상태에서 전자레인지의 도어를 열려고 할 경우에 포토카플러(PC1)의 발광다이오드(PD1)에 점등된 빛이 수광트랜지스터(PTR1)에 입사되어 그가 온되므로 전원단자(Vcc1)의 전원이 저항(R1), 수광트랜지스터(PTR1)를 통해 접지되고, 포토카플러(PC2)의 발광다이오드(PD2)에 점등된 빛은 차단판(4c)에 의해 차단되므로 수광트랜지스터(PTR1)가 오프되어 그의 클렉터에는 고전위가 출력되어 상기 수광트랜지스터(PTR1)의 콜렉터의 저전위와 함께 익스클루시브오아게이트(ExOR1)를 통해 고전위를 출력하고, 그 출력된 고전위는 플립플롭(FF1)의 입력단자(J), (K)에 입력된다.In this state, when the door of the microwave oven is opened, the light that is turned on the light emitting diode PD 1 of the photocoupler PC 1 is incident on the light receiving transistor PTR 1 and turned on so that the power supply terminal Vcc 1 is turned on. Since the power is grounded through the resistor R 1 and the light receiving transistor PTR 1 , and the light that is turned on in the light emitting diode PD 2 of the photocoupler PC 2 is blocked by the blocking plate 4c, the light receiving transistor PTR 1 ) is turned off and a high potential is output to the collector thereof, and a high potential is output through an exclusive oar gate ExOR 1 together with the low potential of the collector of the light receiving transistor PTR 1 , and the output high potential is It is input to the input terminals J and K of the flip-flop FF 1 .

이와같은 상태에서 스위치(SW1)를 단락시키면, 전원단자(Vcc1)의 전원이 스위치(SW1)를 통해 클럭단자(CK1)에 인가되고, 이때 플립플롭(FF1)은 입력단자(J), (K)에 상기와 같이 모두 고전위가 인가되어 있으므로 플립플롭(FF1)은 토글되어 출력단자(Q), (Q)로 고전위 및 저전위를 출력하고, 그 출력단자(Q), (Q)에서 출력된 고전위 및 저전위는 상기 수광트랜지스터(PTR2), (PTR1)의 톨렉터 전위인 고전위 및 저전위와 함께 각기 앤드게이트(AD1), (AD2)의 입력단자에 입력되므로, 앤드게이트(AD1), (AD2)는 고전위 및 저전귀를 출력하고, 앤드게이트(AD1)에서 출력된 고전위는 모타 구동회로(3)의 트랜지스터(TR1), (TR4)의 베이스에 인가되므로 그가 온되고, 앤드게이트(AD2)에서 출력되는 저전위는 모타구동회로(3)의 트랜지스터(TR2), (TR3)의 베이스에 인가되어 그가 오프되므로 전원단자(Vcc2)의 전원이 트랜지스터(TR1)를 통해 모타(M1)에 인가되고 이에따라 모타(M1)는 시계방향으로 회전하게 되어 전자레인지의 도어가 열리게 된다.When the switch SW 1 is shorted in this state, the power of the power supply terminal Vcc 1 is applied to the clock terminal CK 1 through the switch SW 1 , and the flip-flop FF 1 is input terminal ( Since the high potential is applied to both J and K as described above, the flip-flop FF 1 is toggled to output the high potential and the low potential to the output terminals Q and Q, and the output terminal Q ) And (Q), the high potential and the low potential, together with the high potential and the low potential of the tollor potential of the light receiving transistors (PTR 2 ) and (PTR 1 ), respectively, of the AND gates (AD 1 ) and (AD 2 ) Since the input gate is input to the input terminal, the AND gates AD 1 and AD 2 output the high potential and the low tail, and the high potential output from the AND gate AD 1 is the transistor TR 1 of the motor driving circuit 3. ), therefore applied to the base of (TR 4) he is on, the aND gate (AD 2) low potential is output from being applied to the base of the transistor (TR 2), (TR 3) to the motor drive circuit (3) Since he is off the power supply of the power supply terminal (Vcc 2) is applied to the motor (M 1) via a transistor (TR 1) yiettara motor (M 1) is rotated in a clockwise direction and open the door of the microwave oven.

이와같은 상태 즉, 도어가 완전히 열리게 되면 상기와 반대로 포토카플러(PC1)의 발광다이오드(PD1)에 점등된 빛이 차단단(4c)에 의해 차단되므로 수광트랜지스터(PTR1)의 클렉터에 고전위가 출력되고, 상기 포토카플러(PC2)의 수광트랜지스러(PTR2)의 콜렉터에는 저전위가 출력되어 앤드게이트(AD1), (AD2)의 각기 한입력단자에는 저전위가 입력되어 있으므로 앤드게이트(AD1), (AD2)는 모두 저전위를 출력하고, 그 출력된 저전위는 트랜지스터(TR1-TR4)를 오프시키게 되어 모타(M1)와 구동을 정지하게 된다.When the above state, that is, the door is fully opened, so the the contrary photo coupler (PC1) is blocked by the light-emitting diode (PD 1) a single light barrier (4c) light up in the classic large collector of the light-receiving transistor (PTR 1) The upper side is output, and the low potential is output to the collector of the light receiving transistor PTR 2 of the photocoupler PC 2 , and the low potential is input to each of the input terminals of the AND gates AD 1 and AD 2 . Since the AND gates AD 1 and AD 2 both output low potentials, the output low potentials turn off the transistors TR 1- TR 4 to stop driving with the motor M 1 . .

그리고, 전자레인지의 도어를 닫고자할 경우에는 도어가 열린상태 즉, 상기와 같이 포토카플러(PC1), (PC2)의 수광트랜지스터(PTR1), (PTR2)의 콜렉터에 각기 고전위 및 저전위가 출력되어 있으므로 그 출력된 고전위와 저전위는 익스클루시브오아케이트(ExOR1)를 통해 고전위를 출력하고, 그 고전위는 플립플롭(FF1)의 입력단자(J), (K)에 입력된다.When the door of the microwave oven is to be closed, the door is open, that is, as described above, the high potential is applied to the collectors of the light receiving transistors PTR 1 and PTR 2 of the photocouplers PC 1 and PC 2 , respectively. And since the low potential is output, the output high potential and the low potential is output high potential through the exclusive occlude (ExOR 1 ), the high potential is input terminal (J), (of flip-flop (FF 1 ), ( K) is entered.

이와같은 상태에서 스위치(SW1)를 단락시키면, 전원단자(Vcc1)의 전원이 스위치(SW1)를 통해 클럭단자(CK1)에 인가되고, 이때 플립플롭(FF1)의 입력단자(J), (K)에는 상기에서와 같이 모두 고전위가 인가되어 있으므로 플립플롭(FF1)은 토클되어 상기와 반대로 출력단자(Q), ()에서 저전위 및 고전위를 출력하고 그 출력단자(Q), ()에서 출력된 저전위 및 고전위는 상기 수광트렌지스터(PTR2), (PTR1)의 클렉러 전위인 거전위 및 고전위와 함께 각기 앤드게이트(AD1), (AD2)의 입력단자에 입력되므로 앤드게이트(AD1), (AD2)은 저전위 및 고전위를 출력하고, 따라서 앤드게이트(AD1)에서 출력된 저전위는 모타구동회로(3)의 트랜지스터(TR1), (TR4)의 베이스에 인가되므로 그가 오프되고, 앤드게이토(AD2)에서 출력되는 고전위는 모타구동회로(3)의 트랜지스터(TR2), (TR3)의 베이스에 인가되어 그가 온되므로 전원단자(Vcc2)의 전원이 트랜지스터(TR3)를 통해 모타(M1)에 인가되고 이에따라 모타(M1)는 시계반대방향으로 회전하게 되어 전자레인지의 도어를 닫게된다.In this state, when the switch SW 1 is shorted, the power of the power supply terminal Vcc 1 is applied to the clock terminal CK 1 through the switch SW 1 , and at this time, the input terminal of the flip-flop FF 1 ( Since the high potential is applied to J) and (K) as described above, the flip-flop FF 1 is toggled so that the output terminals Q, and ( Output low potential and high potential and output terminal (Q), ( The low and high potentials output from) are input to the input terminals of the end gates AD 1 and AD 2 together with the coarse potentials and the high potentials, which are the clock potentials of the light receiving transistors PTR 2 and PTR 1 . Therefore, the AND gates AD 1 and AD 2 output low potentials and high potentials, and thus the low potentials output from the AND gate AD 1 are the transistors TR 1 and TR of the motor driving circuit 3. It is applied to the base of 4 ) so that it is turned off, and the high potential output from the AND gate (AD 2 ) is applied to the bases of the transistors TR 2 and TR 3 of the motor driving circuit 3 so that it is turned on. the power supply of the terminal (Vcc 2) is applied to the motor (M 1) via a transistor (TR 3) yiettara motor (M 1) is rotated in the counterclockwise direction and closes the door of the microwave oven.

이와같은 상태 즉, 도어가 완전히 닫히면 상기와 반대로 포토카플러(PC1)의 발광다이오드(PD1)에 점등된 빛이 수광트랜지스터(PTR1)에 입사되어 그가 온되므로 그의 콜렉터에 저전위가 출력되고, 수광트랜지스터(PTR2)의 클랙터에는 고전위가 출력되어 앤드게이트(AD1), (AD2)의 입력단자중 한 입력단자에 저전위가 입력되어 있으므로 앤드게이트(AD1), (AD2)는 모두 저전위를 출력하고, 그 출력된 저전위는 트랜지스터(TR1-TR4)를 오프시키게 되어 모타(M1)의 구동을 정지시키게 된다.In this state, that is, when the door is completely closed, the light that is turned on the light emitting diode PD 1 of the photocoupler PC 1 is incident on the light receiving transistor PTR 1 and is turned on so that the low potential is output to its collector. and a light receiving transistor (PTR 2) is larger varactor has been output is the high potential AND gate (AD 1), (AD 2) since the low potential is inputted to one input terminal of the input terminal AND gate (AD 1), the (AD of 2 ) outputs a low potential, and the output low potential turns off the transistors TR 1- TR 4 to stop the driving of the motor M 1 .

이상에서 설명한 바와같이 본 고안은 도어개폐스위치의 조작에 따라 전자레인지의 도어를 자동으로 간편히 열 수 있으므로 사용이 편리함은 물론 도어에 별도의 버튼 및 손잡이들을 설치할 필요가 없어 제품의 외관이 미려해지는 효과도 있다.As described above, the present invention can easily open the door of the microwave oven according to the operation of the door open / close switch, which is convenient to use and does not require the installation of a separate button and handle on the door, which makes the appearance of the product beautiful. There is also.

Claims (2)

전자레인지의 도어개폐를 감지하는 포토카플러(PC1), (PC2)의 수광트랜지스터(PTR1), (PTR2)의 콜렉러측을 로직회로(2)의 입력측인 익스클루시브오아게이트(ExOR1)의 입력단자에 접속하여 그의 출력단자를 플립플롭(FF1)의 입력단자(J), (K)에 공동접속하는 한편 플립플롭(FF1)의 클럭단자(CK1)는 도어개폐스위치(SW1)를 접속하고, 플립플릅(FF1)의 레세트단자(RS)에는 저항(R3), (R4) 및 콘덴서(C1), (C2)로된 리세트회로(2a)를 점속하며, 그의 출력단자(Q), ()는 상기 수광트랜지스터(PT21), (PTR1)의 콜렉터측과 함께 각기 앤드게이트(AD1), (AD2)를 각기 통해 모타구동회로(3)의 입력측인 트렌지스터(TR1), (TR2)의 베이스에 각기 접속함과 동시에 트랜지스터(TR1), (TR2)의 베이스에 접속하고, 상기 트랜지스터(TR1), (TR3)의 콜렉터를 각기 공통 접속하고, 모타구동회로(3)의 모타(M1)는 도어오픈어셈블리(4)에 접속하여 구성함을 특징으로 하는 전자레인지의 도어개폐장치.The input side of the electronic photo coupler for detecting the door open and close the oven (PC 1), the light-receiving transistor of the (PC 2) (PTR 1), the collector reocheuk of (PTR 2) a logic circuit (2) exclusive Iowa gate (ExOR 1) connected to the input terminal of the other hand for common connection to its output terminal in the flip-flop (input terminal (J), (K) of the FF 1) flip-flops (clock terminal (CK 1) of the FF 1) is a door opening and closing switch (SW 1 ) is connected, and a reset circuit (2a) consisting of resistors (R 3 ), (R 4 ) and capacitors (C 1 ), (C 2 ) is provided to the reset terminal (RS) of the flip-flop (FF 1 ). ) And its output terminals (Q), ( ) Is a transistor (TR 1 ), (which is an input side of the motor driving circuit 3 through the AND gates (AD 1 ) and (AD 2 ), respectively, together with the collector side of the light receiving transistors PT 21 and PTR 1 . in each connection and at the same time connected to the base of the transistor (TR 1), (TR 2 ) , and each connected in common to the collector of said transistor (TR 1), (TR 3 ), and the motor driving circuit to the base of TR 2) ( 3) The motor (M 1 ) of the door opening and closing device of the microwave oven, characterized in that configured to be connected to the door open assembly (4). 제l항에 있어서, 도어오픈어셈블리(4) 원호상으로된 랙(4a)의 일단의 상부를 절곡하여 도어(4d)의 내면 일측에 고정하고, 차단판(4c)이 부착된 상기 랙(4a)의 타단은 전자레인지의 본체(4f) 하부의 요입부(4e)를 통해 내부에 삽입한후 상기 모타(M1)의 측에 고정된 피니언(4b)과 치합하여 구성함을 특징으로 하는 전자레인지의 도어개폐장치.The rack (4a) according to claim 1, wherein the upper part of one end of the rack (4a) having an arc shape of the door open assembly (4) is bent and fixed to one side of the inner surface of the door (4d), and the rack (4c) is provided with a blocking plate (4c). The other end of the) is inserted into the inside through the inlet 4e of the lower portion of the main body 4f of the microwave oven, and is configured to engage with the pinion (4b) fixed to the side of the motor (M 1 ) Range opening and closing device.
KR2019870014003U 1987-08-21 1987-08-21 Door of electronic range KR910009024Y1 (en)

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KR100272367B1 (en) * 1997-11-15 2000-11-15 구자홍 Structure of openning and locking door of microwave
KR100273874B1 (en) * 1997-11-15 2000-12-15 구자홍 Structure for opening and closing of microwave oven

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