KR960013116B1 - Auto opening and closing device of microwave oven - Google Patents

Auto opening and closing device of microwave oven Download PDF

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Publication number
KR960013116B1
KR960013116B1 KR1019940011655A KR19940011655A KR960013116B1 KR 960013116 B1 KR960013116 B1 KR 960013116B1 KR 1019940011655 A KR1019940011655 A KR 1019940011655A KR 19940011655 A KR19940011655 A KR 19940011655A KR 960013116 B1 KR960013116 B1 KR 960013116B1
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KR
South Korea
Prior art keywords
door
opening
closing
switch
motor
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KR1019940011655A
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Korean (ko)
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KR950033288A (en
Inventor
양경회
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대우전자 주식회사
배순훈
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Priority to KR1019940011655A priority Critical patent/KR960013116B1/en
Publication of KR950033288A publication Critical patent/KR950033288A/en
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Publication of KR960013116B1 publication Critical patent/KR960013116B1/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
    • 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
    • H05B6/66—Circuits
    • H05B6/666—Safety circuits
    • 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
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The device is designed to reduce impact and noise when closing a door through automatic opening/closing of the door using a motor. The device includes : a door hook (11) installed to a door (10) engaged with a monitor switch (73) and the second safety switch (72); a door opening/closing link (20) fixed to the door (10); a door motor (41) installed at the lower part of a cavity; and a door opening/closing button (80).

Description

전자렌지의 도어 자동 개폐장치Microwave Automatic Door Opener

제1도는 종래 전자렌지의 도어개폐장치 구성을 보인 사시도.1 is a perspective view showing the configuration of a door opening and closing device of a conventional microwave oven.

제2도는 본 발명에 의한 도어 자동 개폐장치가 설치된 전자렌지의 사시도.2 is a perspective view of a microwave oven equipped with an automatic door opening and closing device according to the present invention.

제3도는 제2도에 따른 도어 자동 개폐장치의 내부구성을 보인 절결사시도.3 is a cutaway perspective view showing the internal configuration of the automatic door opening and closing device according to FIG.

제4도는 본 발명에 따른 도어 자동개폐장치에 따른 후크연동부분을 보인 측면도.Figure 4 is a side view showing the hook interlocking portion according to the automatic door opening and closing device according to the present invention.

제5도는 본 발명에 따른 도어 자동개폐장치의 구동회로도.5 is a driving circuit diagram of an automatic door opening and closing device according to the present invention.

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

10 : 도어11 : 후크10 door 11 hook

20 : 개폐링크21 : 기어부20: opening and closing link 21: gear part

22 : 안내홈31 : 삽입공22: guide groove 31: insertion hole

41 : 도어모터42 : 모터기어41: door motor 42: motor gear

51,52,53 : 축60 : 개폐감지 스위치51, 52, 53: axis 60: open / close detection switch

71,72 : 1차,2차 안전스위치73 : 모니터 스위치71,72: 1st, 2nd safety switch 73: Monitor switch

80 : 도어개폐버튼90 : 제어부80: door opening and closing button 90: control unit

91 : 도어모터 제어용 릴레이91: door motor control relay

본 발명은 전자렌지의 도어 자동개폐장치에 관한 것으로, 특히, 모터를 이용하여 도어를 자동으로 개폐시킬 수 있도록 구성함으로써, 도어닫음 따른 충격 및 소음을 줄이고, 가볍게 버튼을 온시켜주어 도어를 열수 있게한 전자렌지의 도어 자동개폐장치를 제공하기 위한 것이다.The present invention relates to a door automatic opening and closing device of a microwave oven, and in particular, by configuring the door to be opened and closed automatically using a motor, to reduce the impact and noise caused by the door closing, to lightly turn on the button to open the door It is to provide a door automatic opening and closing device of a microwave oven.

일반적으로 종래 전자렌지의 도어개폐장치는 제1도에 도시된 바와같이 도어(1)에 상하 후크(2)를 설치하고, 전면판넬(3)에 후크삽입공을 형성하며, 그 후크 삽입공 내측에 후크(2)가 걸리는 걸림구 및 후크(2)에 의해 직접 및 연동되는 레버에 의해 1차, 2차안전스위치 및 모니터스위치가 설치되며, 도어오픈버튼(4)에 의해 연동되는 오픈레버에 의해 상기 걸림구에 걸려있는 후크(2)를 밀여올려 도어를 열도록 되어 있었다.In general, the door opening and closing device of the conventional microwave oven, as shown in FIG. 1, the upper and lower hooks 2 are installed on the door 1, and the hook insertion holes are formed on the front panel 3, and the inside of the hook insertion holes. The first and second safety switches and monitor switches are installed by the latches and the levers that are directly and interlocked by the hooks 2 and the open levers interlocked by the door open button 4. As a result, the hooks 2 hanging on the locking holes were pushed up to open the doors.

그러나, 이와같은 종래 전자렌지의 도어개폐장치는 도어(1)를 손으로 밀어서 닫아야 하며, 이때 후크(2)의 탄성을 유지시키기 위한 도어스프링등에 의해 후크가 하향으로 당겨진 상태이므로, 닫을때에는 후크(2)가 걸림구에 걸려 잠길 수 있는 힘으로 닫아주어야 하고, 이로인해 충격이 발생됨과 아울러 소음이 발생되는 문제점이 있었다.However, the door opening and closing device of the conventional microwave oven should be closed by pushing the door (1) by hand, the hook is pulled downward by the door spring for maintaining the elasticity of the hook (2), so when closing the hook ( 2) should be closed by the force to be locked to the locking hole, due to this there was a problem that the impact and noise is generated.

또한, 도어를 열경우에는 도어 오픈버튼(4)을 눌러주어야 하며, 이 경우에 도어오픈버픈(4)에 의해 연동되는 레버가 후크를 밀어올리도록 되어있으므로, 도어스프링의 탄성을 이길 수 있는 힘으로 눌러주어야 하기 때문에 힘이 많이드는 단점이 있었다.In addition, when the door is opened, the door open button (4) must be pressed, and in this case, the lever interlocked by the door open opener (4) pushes up the hook, thus the force that can overcome the elasticity of the door spring. Because it has to press a lot of power was a disadvantage.

이와같이 종래 전자렌지에서는 도어를 수동으로 여닫도록 되어있으므로, 매우 불편하고, 충격 및 충격에 따른 소음이 발생되는 등의 문제점이 있었다.As described above, in the conventional microwave oven, the door is opened and closed manually, which is very inconvenient, and there are problems such as noise and noise caused by the impact.

본 발명은 이와같은 종래 문제점을 개선하기 위해서 자동으로 도어를 열고닫을 수 있도록 함으로써, 부드럽게 도어를 열고 닫아 충격 및 소음을 방지하고 사용상에 편리함을 도모하기 위한 전자렌지의 도어 자동개폐장치를 제공하기 위한 것이다.The present invention is to provide a door automatic opening and closing device of the microwave oven to automatically open and close the door in order to improve such a conventional problem, to prevent the impact and noise by opening and closing the door smoothly. will be.

이와같은 본 발명의 목적은, 도어에 하나의 도어후크를 설치하고, 그 도어후크가 전면판넬의 삽입공을 통해 삽입되어 모니터스위치 및 2차안전스위치를 연동시킬 수 있도록 이어지고, 도어의 하단부에 도어개폐용 반월형의 개폐링크가 설치되며, 그 개폐링크의 내주연에 기어가 형성되고, 개비티 하부에 설치된 도어개폐모터의 모터기어가 상기 개폐링크의 기어와 맞물려 설치되고, 도어가 완전히 닫혔을때 개폐링크의 단부에 의해 눌려서 연동되는 1차안전스위치를 설치하며, 도어가 최대로 열림과 최대로 닫힘을 감지하여 도어모터를 제어하는 열림한계 감지수단과, 상기 개폐링크의 슬라이드를 안내함과 아울러 최대열림을 제한하는 안내수단 및 도어개폐수버튼의 눌림에 따라 도어모터의 구동 시작신호를 인가시키기 위한 제어수단을 포함시켜 구성함으로써, 달성되는 것으로, 이와같은 본 발명에 의하면, 도어개폐버튼을 눌러서 자동으로 도어를 개폐시킬 수 있게 되고, 이로인해 도어가 부드럽게 열리고 닫힐 수 있어서, 충격 및 소음을 방지할 수 있고, 도어를 여닫는데 매우 편리하고 힘들이지 않고서도 도어를 여닫을 수 있게 된다.The object of the present invention is to install a door hook on the door, and the door hook is inserted through the insertion hole of the front panel so that the monitor switch and the secondary safety switch can be interlocked, and the door at the bottom of the door. When opening / closing link of opening / closing type is installed, the gear is formed on the inner circumference of the opening / closing link, and the motor gear of the door opening / closing motor installed in the lower part of the cavity is engaged with the gear of the opening / closing link, It installs the primary safety switch that is interlocked by the end of the opening and closing link, the opening limit detection means for controlling the door motor by detecting the maximum opening and closing of the door, and guides the slide of the opening and closing link, Including a guide means for limiting the maximum opening and a control means for applying the drive start signal of the door motor in response to the pressing of the door opening and closing button In this way, according to the present invention, it is possible to automatically open and close the door by pressing the door opening and closing button, the door can be opened and closed smoothly, thereby preventing the impact and noise, It is very convenient to open and close, and you can open and close the door without effort.

이하, 본 발명에 의한 실시예를 첨부된 도면을 참조해서 상세히 설명하면 다음과 같다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제2도는 본 발명에 의한 도어 자동 개폐장치가 설치된 전자렌지의 사시도이고, 제3도는 제2도에 따른 도어 자동 개폐장치의 내부구성을 보인 절결 사시도이며, 제4도는 본 발명에 따른 도어 자동개폐장치에 따른 후크연동부분을 보인 측면도로서, 이에도시된 바와같이 도어(10)에 하나의 도어후크(11)를 설치하고, 그 도어후크(11)가 전면판넬의 삽입공(12)을 통해 삽입되어 걸림과 아울러 모니터스위치(73) 및 2차안전스위치(72)를 연동시킬 수 있도록 이루어지며, 그 도어후크(11)의 단부는 종래에 비해 비교적 완만한 경사를 가지고, 아울러 후크를 탄력적으로 지지하는 도어스프링도 종래에 비해 스프링력에 낮은 스프링으로 설치하며, 전면 판넬내측의 걸림구(12a)도 종래이 비해 경사각도를 줄인다. 즉, 모터의 힘에 의해 열고 닫힐 수 있되, 약간의 걸림에 의해 닫힘 상태가 유지되게 하면된다.Figure 2 is a perspective view of a microwave oven is installed automatic door opening and closing device according to the present invention, Figure 3 is a cutaway perspective view showing the internal configuration of the automatic door opening and closing device according to Figure 2, Figure 4 is a door automatic opening and closing according to the present invention Side view showing the hook interlocking portion according to the device, as shown in this one door hook 11 is installed on the door 10, the door hook 11 is inserted through the insertion hole 12 of the front panel It is made so as to interlock with the monitor switch 73 and the secondary safety switch 72, the end of the door hook 11 has a relatively gentle inclination compared to the conventional, and also supports the hook elastically The door spring is also installed in the spring force lower than the conventional spring, and the locking hole (12a) inside the front panel also reduces the angle of inclination compared with the prior art. In other words, it can be opened and closed by the power of the motor, but the closed state is maintained by a slight locking.

또한, 도어(10)의 하단부에 도어 개폐용 반월형의 개폐링크(20)가 설치되며, 그 개폐링크(20)의 내주연에 기어(21)가 형성되고, 중앙에 길게 안내홈(22)이 형성되고, 캐비티 하부에 설치된 도어개폐모터(41)의 모터기어(42)가 상기 개폐링크(20)의 기어(21)와 맞물려 설치되고, 도어(20)가 완전히 닫혔을때 개폐링크(20)의 단부에 의해 눌려서 연동되는 1차안전스위치(71)를 설치한다.In addition, a door opening and closing half-opening opening and closing link 20 is installed at the lower end of the door 10, the gear 21 is formed on the inner circumference of the opening and closing link 20, the guide groove 22 is long in the center It is formed, the motor gear 42 of the door opening and closing motor 41 installed in the lower cavity is engaged with the gear 21 of the opening and closing link 20, the opening and closing link 20 when the door 20 is completely closed Install the primary safety switch 71 is pressed by the end of the interlock.

또한, 도어(10)가 최대로 열림과 최대로 닫힘을 감지하여 도어모터(41)를 제어하기 위한 개폐감지스위치(60)를 상기 개폐링크(20)의 단부상면에 설치하고, 상기 개폐링크(20)의 안내홈(22)에 끼워져서 개폐링크(20)의 슬라이드를 안내함과 아울러 최대열림을 제한하는 안내측(51)과, 상기 감지스위치(60)가 최대열림을 감지하게 하는 열림감지축(52) 및 상기 감지스위치(60)가 닫힘을 감지케하는 닫힘 감지축(53)이 설치되고, 도어개폐버튼(80)의 눌림여부에 따라 도어모터(41)의 구동 시작신호를 인가시키기 위한 제어부(90)를 포함시켜 구성한다.In addition, the opening and closing detection switch 60 for controlling the door motor 41 by detecting the maximum opening and closing of the door 10 is installed on the end surface of the opening and closing link 20, the opening and closing link ( The guide side 51 which is inserted into the guide groove 22 of the guide 20 to guide the slide of the opening and closing link 20 and limits the maximum opening, and the opening detection for allowing the detection switch 60 to detect the maximum opening. A closing detection shaft 53 for detecting the closing of the shaft 52 and the detection switch 60 is installed, and applying a driving start signal of the door motor 41 according to whether the door opening / closing button 80 is pressed. It is configured to include a control unit 90 for.

또한, 제5도는 본 발명에 따른 도어 자동개폐장치의 구동회로도로서, 이에 도시된 바와같이 전원입력 라인의 휴즈(F) 후단에 도어모터(41)를 연결하고, 그 도어모터(41)는 개폐감지스위치(60)와, 도어개폐구동용 릴레이(91)에 의해 병렬제어되게 구성하며, 그 도어개폐 구동용 릴레이(91)는 도어개폐 버튼(80)의 키신호를 의거하여 일정시간 동안 그 릴레이(91)을 온시키는 제어부(90)의 제어를 받도록 구성된다.In addition, Figure 5 is a drive circuit diagram of the automatic door opening and closing device according to the present invention, the door motor 41 is connected to the rear end of the fuse (F) of the power input line, as shown therein, the door motor 41 is opened and closed It is configured to be controlled in parallel by the detection switch 60, the door opening and closing drive relay 91, the door opening and closing drive relay 91 based on the key signal of the door opening and closing button 80 for a predetermined time. It is configured to be controlled by the control unit 90 that turns on 91.

그리고, 상기 휴즈(F)의 후단에 1차,2차 안전스위치(71)(72)를 연결함과 아울러 양단간에 사이에 모니터 스위치(73)를 연결하고, 1차 안전스위치(71)의 후단에 타이머스위치(T-S/W)를 연결하고, 그 타이머 스위치(T-S/W)의 후단에 팬모터(FM) 타이머모터(TM) 및 기어드모터(GM)를 연결하고, 타이머스위치(T-S/W)의 후단에 가변파워콘트롤스위치(V.P.C)를 통해서 마그네트론(M/W)구동용 고압트랜스를 연결하여 구성된다.The first and second safety switches 71 and 72 are connected to the rear end of the fuse F, and the monitor switch 73 is connected between both ends, and the rear end of the primary safety switch 71 is connected. Connect the timer switch (TS / W) to the rear end of the timer switch (TS / W), and connect the fan motor (FM) timer motor (TM) and geared motor (GM) to the timer switch (TS / W). It is composed by connecting high-voltage transformer for driving magnetron (M / W) through variable power control switch (VPC) at the rear of.

이와 같이 구성된 본 발명에 의한 전자렌지의 도어 자동 개폐장치의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effect of the automatic door opening and closing device of the microwave oven according to the present invention configured as described above are as follows.

먼저, 도어가 열려있는 상태에서 도어개폐버튼(80)을 누르게 되면, 제어부(90)에서 소정시간동안 도어개폐 구동용 릴레이(91)를 온시키게 된다. 이에따라 도어모터(41)가 구동되어 모터기어(42)가 회전되고, 그 모터기어(42)에 맞물려 있는 개폐링크(20)가 내측으로 이동되며, 이로인해 도어(10)가 닫히는 방향으로 회동된다.First, when the door opening and closing button 80 is pressed while the door is open, the control unit 90 turns on the door opening and closing driving relay 91 for a predetermined time. Accordingly, the door motor 41 is driven to rotate the motor gear 42, and the opening / closing link 20 engaged with the motor gear 42 is moved inward, thereby rotating in the direction in which the door 10 is closed. .

이때, 개폐링크(20)가 내측으로 약간만 이동되어도 개폐감지스위치(60)가 열림 감지축(52)의 제동으로부터 해제되어 턴온되고, 개폐링크(20)는 그 중앙부에 길게 형성된 안내홈(22)에 끼워진 안내측(51)의 안내를 받아 원호를 그리면서 흔들리지 않고 안정되게 슬라이드 이동된다.At this time, even if the opening and closing link 20 is moved only slightly inward, the opening and closing detection switch 60 is released from the braking of the opening detection shaft 52 is turned on, the opening and closing link 20 is a guide groove 22 formed long in the center thereof Receives the guide of the guide side 51 fitted in the slide is moved stably without drawing an arc.

이어서, 제어부(90)에서 릴레이(19)를 소정시간 경과후 오프시키게 되면, 이미 상기 개폐 감지스위치(60)가 온되어 있으므로, 도어모터(41)는 계속해서 구동되고, 도어(10)가 거의 닫히면, 도어후크(11)가 삽입공(12)내로 삽입되며, 도어(10)가 완전히 잠김상태로 닫히게 되면, 후크(11)가 걸림부(12a)에 걸리면서 모니터 스위치(73)부터 오프시키고 2차안전스위치(72)를 온시키며, 그 2차 안전스위치(72)가 온됨과 동시에 개폐레버(20)의 단부가 1차 안전스위치(71)의 제어레버를 눌러 그 1차 안전스위치(71)를 온시키게 되고, 개폐감지스위치(60)의 레버가 닫힘감지축(53)걸려서 도어모터(41)에 공급되는 전원을 차단시킴으로써, 도어의 닫힘이 완료된다.Subsequently, when the control unit 90 turns off the relay 19 after a predetermined time elapses, since the open / close detection switch 60 is already turned on, the door motor 41 continues to be driven, and the door 10 is almost closed. When closed, the door hook 11 is inserted into the insertion hole 12, and when the door 10 is completely closed, the hook 11 is caught by the locking portion 12a and turned off from the monitor switch 73. The primary safety switch 72 is turned on, and the secondary safety switch 72 is turned on, and at the same time, the end of the opening / closing lever 20 presses the control lever of the primary safety switch 71 to make the primary safety switch 71. The door is closed by closing the power supplied to the door motor 41 by the lever of the opening / closing detection switch 60 being closed by the detection shaft 53.

이와같이 도어(10)가 닫힘 상태에서 1차 2차 안전스위치(71)(72)를 통하여 각 부하구동부에 전원이 공급되어 조리동작을 수행시킬 수 있게 된다.In this way, power is supplied to each load driving unit through the primary secondary safety switches 71 and 72 in the closed state of the door 10 to perform a cooking operation.

그리고, 도어 닫힌 상태에서는 도어모터(41)가 오프되어 모터기어(42)가 회전되지 못하기 때문에 잠김상태가 유지됨과 아울러 도어후크(11)가 걸림구(12a)에 걸려있어서 잠김상태가 확실하게 유지된다.In the closed state, the door motor 41 is turned off so that the motor gear 42 cannot be rotated so that the locked state is maintained and the door hook 11 is locked to the locking hole 12a. maintain.

한편, 도어가 닫힘 상태에서 도어를 열고자 도어개폐버튼(80)은 누르면, 제어부(90)의 제어에 의해 릴레이(91)가 온되어 도어모터(41)가 구동되기 시작하고, 그 도어모터(41)가 구동되어 개폐링크(20)가 뒤로 밀려나오면 도어가 열리면서 후크(11)에 의해 제어되던 모니터 스위치(73)가 온됨과 아울러 2차 안전스위치(72)가 오프되고, 이와 동시에 개폐링크(20)에 의해 제어레버가 눌렸던 1차 안전스위치(71)가 오프되고, 또한 개폐감지스위치(60)의 레버가 닫힘 감지축(53)의 제동으로부터 벗어나면서 그 개폐감지스위치(60)가 온된다.On the other hand, when the door opening and closing button 80 is pressed to open the door in the closed state, the relay 91 is turned on by the control of the controller 90 and the door motor 41 starts to be driven, and the door motor ( 41 is driven and the opening / closing link 20 is pushed back, the door is opened and the monitor switch 73 controlled by the hook 11 is turned on and the secondary safety switch 72 is turned off. 20, the primary safety switch 71 in which the control lever is pressed is turned off, and the opening and closing detection switch 60 is turned on while the lever of the opening and closing detection switch 60 is released from the braking of the closing detection shaft 53. .

이후, 제어부(90)에서 릴레이(91)를 오프시키게 되고, 그 릴레이(91)가 오프되어도 상기 개폐감지 스위치(60)가 온상태로 도어모터(41)에 계속으로 구동전원을 공급해준다.Thereafter, the control unit 90 turns off the relay 91, and even when the relay 91 is turned off, the open / close detection switch 60 continues to supply driving power to the door motor 41.

도어가 완전히 열리게되면, 개폐감지스위치(60)의 레버가 열림감지축(52)의 제동을 받아 그 개폐감지스위치(60)가 오프되면서 도어모터(41)의 전원을 차단시켜 오프시키고, 이때, 개폐링크(20)의 안내홈(22)이 끝나면서 안내측(51)이 걸리기 때문에 파손되지 않는한 도어를 손으로 당겨도 더이상 열리지 않기 되며, 그 안내측(51)의 지지력만으로 도어가 더이상 열리지 않도록 스토퍼 역할을 하기에 부족할 수 있으므로, 개폐링크(20)의 단부에 걸림턱을 형성하고, 그 걸림턱이 걸리도록 전자렌지 바닥판이나 전면판 하단에 걸림부를 돌출시켜 구성할 수도 있으며, 이와같이 보조적으로 스토퍼를 설치하면 도어가 열린상태에서 움직이는 사람에 의해 걸리거나 어린이등이 강제로 도어를 열어젖힌다 할지라도 최대 열림 한계에서 안정되게 지지될 수 있다.When the door is completely opened, the lever of the open / close detection switch 60 receives the braking of the open detection shaft 52, and the open / close detection switch 60 is turned off to cut off the power of the door motor 41. Since the guide groove 51 of the opening / closing link 20 is finished, the guide side 51 is caught so that the door is no longer opened even when the door is pulled by hand, so that the door can no longer be opened by the support force of the guide side 51. Since it may be insufficient to serve as a stopper, a locking step may be formed at an end of the opening / closing link 20, and a protrusion may be formed at the bottom of the microwave bottom plate or the front plate so that the locking step is caught. When the stopper is installed, it can be stably supported at the maximum opening limit even if it is caught by a moving person or the child is forced to open the door.

또한, 개폐링크(20)의 슬라이드됨을 안내하기 위해 안내홈(22)과 안내축(51)을 형성하여 수평이동에 대해서 안정되게 안내하며, 상하 요동에 대해서는 개폐링크(20)의 단부가 도어(10)에 고정됨과 아울러 전면 판넬의 삽입공(31)에 의해 제어되도록 되어있으나, 삽입공(31)의 상단을 내측으로 절곡시켜 두면 상하 요동에 대해서도 요동없이 슬라이드시킬 수 있게 된다.In addition, the guide groove 22 and the guide shaft 51 is formed to guide the sliding of the opening and closing link 20 to guide stably with respect to the horizontal movement, and for the up and down swing, the end of the opening and closing link 20 is the door ( 10) and is controlled to be controlled by the insertion hole 31 of the front panel, but if the upper end of the insertion hole 31 is bent inward, it is possible to slide without swinging up and down.

이상에서 상세히 설명한 바와같이 본 발명에 의하면, 도어가 닫힌 상태이거나, 열린상태에서 도어개폐버튼을 누르면, 도어가 모터에 의해 자동으로 개폐되므로, 열고 닫는데에 힘들이지 않아도 편리하게 도어를 개폐시킬 수 있으며, 도어의 닫힘에 따른 충격이 방지됨과 아울러 소음이 방지되는 효과가 있다.As described in detail above, according to the present invention, since the door is automatically opened and closed by a motor when the door is closed or the door is opened or closed, the door can be opened and closed conveniently without opening and closing the door. In addition, the impact of the door is closed and the noise is also prevented.

Claims (4)

전면판넬 내측에서 모니터스위치(73) 및 2차안전스위치(72)를 연동시킬 수 있도록 도어(10)에 하나의 도어후크(11)를 설치하고, 도어(10)의 하단부에 일단부가 고정된 도어 개폐용 개폐링크(20)를 기어물림에 의해 슬라이드 시킬 수 있도록 캐비티 하부에 도어모터(41)를 설치하며, 상기 개폐링크(20)의 단부에 의해 눌려서 연동되는 1차안전스위치(71)를 설치하고, 도어가 열림과 닫힘을 감지하여 상기 도어모터(41)를 제어하기 위한 개폐감지수단과, 상기 개폐링크(20)의 슬라이드를 안내함과 아울러 최대열림을 제한하는 안내수단 및 도어개폐버튼(80)에 의해 도어모터(41)의 구동 시작신호를 인가시키기 위한 제어수단을 포함시켜 구성한 것을 특징으로 하는 전자렌지의 도어 자동개폐장치.One door hook 11 is installed on the door 10 so that the monitor switch 73 and the secondary safety switch 72 can be interlocked inside the front panel, and one end is fixed to the lower end of the door 10. The door motor 41 is installed in the lower part of the cavity so as to slide the opening / closing link 20 for opening / closing by the gear bit, and the primary safety switch 71 is pressed to be interlocked by the end of the opening / closing link 20. In addition, the opening and closing detection means for controlling the door motor 41 by detecting the opening and closing of the door, the guide and the door opening and closing button to guide the slide of the opening and closing link 20 and limit the maximum opening ( And a control means for applying a driving start signal of the door motor (41) by the door (80). 제1항에 있어서, 상기 개폐 감지수단은, 도어(10)가 최대로 열림과 최대로 닫힘을 감지하여 도어모터(41)를 제어하기 위한 개폐감지스위치(60)를 상기 개폐링크(20)의 단부 상면에 설치하고, 상기 감지스위치(60)가 최대열림을 감지하게 하는 열림감지축(52) 및 상기 감지스위치(60)가 닫힘을 감지케하는 닫힘 감지축(53)이 각각 소정위치에 돌설하여 구성한 것을 특징으로 하는 전자렌지의 도어 자동개폐장치.The method of claim 1, wherein the opening and closing detection means, the opening and closing detection switch 60 for controlling the door motor 41 by detecting the maximum opening and closing the door 10 to the maximum of the opening and closing link 20 It is installed on the upper end, the opening detection axis 52 for detecting the maximum opening of the detection switch 60 and the closing detection axis 53 for detecting the closing of the detection switch 60 protrudes in a predetermined position, respectively. Microwave door automatic opening and closing device characterized in that configured. 제1항에 있어서, 상기 안내수단은, 상기 개폐링크(20)의 중앙부에 길게 안내홈(22)을 형성하고, 상기 안내홈(22)에 끼워져서 슬라이드 이동을 안내함과 아울러 안내홈(22)의 끝단부가 걸려서 최대열림을 제동시키는 안내측(51)을 바닥판에 돌설하여 구성한 것을 특징으로 하는 전자렌지의 도어 자동개폐장치.According to claim 1, The guide means, the guide groove 22 is formed long in the central portion of the opening and closing link 20, is inserted into the guide groove 22 to guide the slide movement and guide groove 22 The door automatic opening and closing device of the microwave oven, characterized in that the guide side 51 to stop the maximum opening by hanging on the bottom plate. 제1항에 있어서, 상기 제어수단은, 상기 개폐 감지수단에 의해 제어되는 스위치와 릴레이(91) 스위치를 상기 도어모터(41)의 일측 전원라인에 병렬연결하고, 상기 도어개폐버튼(80)이 눌렸을때, 상기 릴레이(91)를 소정시간동안만 온시키도록 제어하는 제어부(90)로 구성한 것을 특징으로 하는 전자렌지의 도어 자동개폐장치.According to claim 1, The control means, the switch controlled by the opening and closing detection means and the relay 91 switch is connected in parallel to one power line of the door motor 41, the door opening and closing button 80 When pressed, the automatic door opening and closing device for a microwave oven, characterized in that configured as a control unit 90 to control the relay 91 to turn on only for a predetermined time.
KR1019940011655A 1994-05-27 1994-05-27 Auto opening and closing device of microwave oven KR960013116B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US8710409B2 (en) 2010-12-17 2014-04-29 Bsh Home Appliances Corporation Motorized home appliance door

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100734360B1 (en) * 2005-11-22 2007-07-03 엘지전자 주식회사 electric oven range

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US8710409B2 (en) 2010-12-17 2014-04-29 Bsh Home Appliances Corporation Motorized home appliance door

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KR950033288A (en) 1995-12-22

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