CN103134091B - The interlock of microwave oven - Google Patents
The interlock of microwave oven Download PDFInfo
- Publication number
- CN103134091B CN103134091B CN201110397991.8A CN201110397991A CN103134091B CN 103134091 B CN103134091 B CN 103134091B CN 201110397991 A CN201110397991 A CN 201110397991A CN 103134091 B CN103134091 B CN 103134091B
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- Prior art keywords
- door bolt
- lever
- interlock
- microwave oven
- pressure surface
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Abstract
The invention discloses the interlock of a kind of microwave oven, including door bolt, door bolt groove and the door bolt plate being fixedly installed on door bolt groove rear portion, respectively rotatably it is fixedly installed interior lever and outer lever inside and outside described door bolt plate, is respectively arranged with reset tension spring between described interior outer lever and door bolt plate and be respectively formed with can with the stress surface of door bolt effect in its upper end；Wherein, the lower end of described interior lever is formed can with the lower pressure surface of interlocking switch effect；The lower end of described outer lever is formed can with the lower pressure surface of the interlocking switch effect of show circuit.The interlock of the present invention adopts lever rotating type trigger architecture, and the pressing making microswitch is more direct, reliably；And pressing and release process are easily stable, lever stress is little avoids switch gate difficulty, noise bad；On microwave oven cavity front panel, design has a long and narrow hole and installs bib, it is to avoid door bolt plate promotes pressing microswitch under non-normal condition, it is prevented that security incident occurs.
Description
Technical field
The present invention relates to a kind of microwave oven, particularly to the interlocking switch structure of a kind of open and-shut mode that can accurately detect fire door.
Background technology
There is cooking room the inside of the cavity constituting the framework of microwave oven, and cooking room is for cooking cooking object.It is provided with front panel before cavity, front panel has door bolt groove, the door bolt of door in door bolt groove, can be made to come in and go out.The door bolt groove of front panel is provided with door bolt plate, door bolt plate is provided with detect the miniature interlocking switch of an open and-shut mode.
Chinese patent 03104680.0 discloses a kind of interlock, and as shown in Figure 1, 2, door 6, for the cooking room of opening and closing inside cavity, is provided with door bolt 7 at the back side of door 6.Door bolt 7 is supported typically via elastomeric element, it is possible to lift along direction as shown in Figure 1.The top and bottom of door bolt 7 are prominent towards the rear of door 6 respectively to be formed, and the front end of the door bolt 7 that downward distal process goes out is respectively formed with the first pressing face 54 and the second pressing face 56.First pressing face 54 and the second pressing face 56 are respectively provided with certain area, it is possible to by button 81 below.The angle that the elongated surfaces of the first pressing face 54 and the second pressing face 56 intersects is more a little bit smaller than right angle.It addition, there is blocking surface 57 on door bolt 7, blocking surface 57 is positioned on the position contrary with the first pressing face 54.Blocking surface 57 tilts towards the forward lower part of door bolt 7.Having door bolt groove 5 on the side of the front panel 4 before cavity, door bolt groove 5 comes in and goes out for door bolt 7.Door bolt groove 5 is formed in the position corresponding to door bolt 7, and the number of door bolt groove 5 is corresponding to the number of door bolt 7.The back side of front panel 4 is provided with door bolt plate 20.
As it is shown in figure 1, door bolt plate 20 is along extending formation up and down, the back side of plate 4 forward-mounted.Position corresponding to the door bolt plate 20 of door bolt groove 5 has guide pass 72, the inside front ends of guide pass 72 is provided with stop holder 74, stop that holder 74 is for being stuck in the blocking surface 57 of door bolt 7.Additionally the inner side of the guide pass 72 of door bolt plate 20 lower end is provided with monitor switch 32.Wherein the button 81 of monitor switch 32 is positioned on the position of distance guide rail face 72 direction of advance certain distance.It is to say, when being arranged on door bolt plate 20 by monitor switch 32, button 81 will towards guide pass 72.The top and bottom of door bolt plate 20 are respectively arranged with interlocking switch 30.Wherein, the button 81 being arranged on the interlocking switch 30 of lower end is positioned at the position of distance stop holder 74 specific ranges, say, that button 81 is positioned at the position that distance is generally perpendicular to advance side's specific range of guide pass 72.Wherein, it is slightly less than 90 degree towards the extended line of button 81 projected direction of monitor switch 32 and the angle formed towards the direction extended line that the button 81 of interlocking switch 30 is prominent.When door bolt 7 is inserted in door bolt groove 5 time, each extended line is preferably respectively perpendicular to the first pressing face 54 and the second pressing face 56 respectively.
But, prior art construction form is complicated, pressing poor reliability, it is easy to occur pressing bad；During switch gate, door bolt must slip over the inclined plane of door bolt plate, and contact position has frictional dissipation, and additionally switch gate strength is big, often has bad generation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of interlock, and it has brand-new door bolt plate and lever construction, and microswitch pressing is more directly reliable, and pressing and release process are easily stable, it is to avoid switch gate difficulty, and noise etc. is bad.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of interlock of microwave oven, including door bolt, door bolt groove and the door bolt plate being fixedly installed on door bolt groove rear portion, respectively rotatably it is fixedly installed interior lever and outer lever inside and outside described door bolt plate, is respectively arranged with reset tension spring between described interior outer lever and door bolt plate and be respectively formed with can with the stress surface of door bolt effect in its upper end；Wherein, the lower end of described interior lever is formed with lower pressure surface, interior lever side is formed with the second pressure surface outwardlyly, and the interlocking switch in primary and secondary loop can be interfered with described lower pressure surface and the second pressure surface interval respectively and is configured to be fixedly installed on door bolt plate；The lower end of described outer lever is formed and lower pressure surface, and secondary interlocking switch and described lower pressure surface interval are configured to be fixedly installed on door bolt plate.
Preferably, being respectively arranged with at least one locating dowel inside and outside described door bolt plate, described locating dowel coordinates, with the spacing hole on described interior lever or outer lever accordingly, the maximum displacement that can limit interior lever or outer lever.
Preferably, described interior regulations and parameters or the outer lever left and right sides be respectively formed with its rotating shaft be the center of circle left circular arc and right circular arc, be fixedly installed respectively inside and outside on described door bolt plate can by embedding to described left circular arc, right circular arc outer rim containing left limit hook therein and right limit hook, described left limit hook, right limit chimoto towards the rotating shaft of inside and outside lever and its hook part by spacing for arc sections and allow its generation freely rotatable.
Preferably, because outer lever small volume, described outer lever offers spacing hole and right limit hook is confined in described spacing hole, the right circular arc of described outer lever forms the top edge at spacing hole, the energy supply of locating dowel Yu positive stop hook is gathered together, do not increase volume while ensureing energy supply effect, effectively control cost simultaneously yet.
The interlock of the present invention adopts lever rotating type trigger architecture, and the pressing making microswitch is more direct, reliably；And pressing and release process are easily stable, lever stress is little avoids switch gate difficulty, noise etc. bad；On microwave oven cavity front panel, design has a long and narrow hole and installs bib, it is to avoid door bolt plate promotes pressing microswitch under non-normal condition, it is prevented that security incident occurs.
Accompanying drawing explanation
Fig. 1 is the example structure plane graph of the interlock of prior art door for microwave oven；
Fig. 2 is the working state figure of prior art interlock work process；
Fig. 3 is the door bolt portion structural representation of the door for microwave oven of the present invention；
Fig. 4 is the door bolt groove place structural representation of the micro-wave oven furnace chamber of the present invention；
Fig. 5 is the interlock front schematic view of the present invention；
Fig. 6 is the interlock rearview of the present invention.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with drawings and embodiments, the present invention is described in further detail.
As seen in figures 3-6, door 100 is for the cooking room of opening and closing inside cavity, it is provided with at the back side of door 100 and is fixedly connected with door bolt 110 and lower door bolt 120, the described upper-lower door latch platy structure that extend back vertical with described door 100 also forms rounding in its outer end so that inserting, wherein go up door bolt 110 length length more than lower door bolt 120, adopt the door bolt length that length is different, it is possible to achieve the pressing order of microswitch.The switch of upper door bolt pressing is primary switch and pilot switch, the words that under door opening state, child's false touch is touched, it does not have safety problem；The switch of lower door bolt pressing is secondary switch, and under door opening state, false touch all simultaneously is touched only up and down, and all pressings of all switches just have safety problem, ensure safety problem as much as possible.
The side of the front panel 200 before microwave oven cavity has upper door bolt groove 210 corresponding with described upper-lower door latch respectively and lower door bolt groove 220, described upper-lower door latch groove comes in and goes out for upper-lower door latch, it is wherein a long and narrow hole at described lower door bolt groove 220, bib 230 can be movably provided with by trace inside described lower door bolt groove, bib 230 intermediate formation has long and narrow through hole, long and narrow through hole both sides are domatic guide surface, its entire widths can be reduced under it can effectively guide ensureing under the premise inserted smoothly of door bolt, reduce its situation about be touched as far as possible.
Be fixedly installed door bolt plate 300 at described upper-lower door latch groove rear portion, as shown in Figure 5,6, door bolt plate 300 along extending formation up and down, the back side of plate 200 forward-mounted.Interior lever 310 and outer lever 320 respectively rotatably it is fixedly installed inside and outside described door bolt plate 300.Cylindrical inner rotary shaft 311 it has been arranged around at described door bolt plate 300 medial center place, described interior lever 310 is rotatably set in inner rotary shaft 311, described interior lever 310 upper end is formed and the stress surface 312 of described upper door bolt 210 effect, described interior lever is formed for 310 times and lower pressure surface 313, it is fixedly installed interlocking switch (microswitch) 400 in described interior lever 310 bottom spacedly, the button of described interlocking switch is towards pressure surface under the bottom of interior lever, when the upper end stress surface of interior lever is touched pressing by upper door bolt, interior lever rotates around inner rotary shaft, lower pressure surface 313 is by the button of pressing interlocking switch 400, make its place circuit closed.For guaranteeing that described lower contact surface can steadily press the button of interlock switch when rotated, described lower contact surface 313 is provided with arc angling with interlocking switch sides adjacent.
It is formed with the second pressure surface 314 inside described interior lever outwardlyly, on described door bolt plate 300 with the second described pressure surface below and with it compartment of terrain be fixedly installed interlocking switch 410, the button of described interlocking switch 410 is towards the second pressure surface 314, when the upper end of interior lever is touched pressing, interior lever rotates around inner rotary shaft, and the second pressure surface 314 is rotated down the button of pressing interlocking switch and makes its place circuit closed.
For ensureing described interior lever smooth rotation and resetting in time, described door bolt plate is provided with two locating dowels 301, the spacing hole 315 corresponding with described locating dowel is formed accordingly on described interior lever, described spacing hole coordinates the maximum displacement namely limiting interior lever with locating dowel, being provided with extension spring 330 between described interior lever and door bolt plate 300, described extension spring 330 is opened door bolt at door and is released the button to discharge two interlocking switches that can be resetted by interior lever in time when pressing in internal lever stress face simultaneously.
Simultaneously for preventing described interior lever from upset or the movement of front and back occurring when rotated, be respectively formed with inside and outside described interior regulations and parameters with inner rotary shaft be the center of circle left circular arc 316 and right circular arc 317, be formed with on described door bolt plate can be embedding containing left limit hook 306 therein and right limit hook 307 by described left circular arc outer rim simultaneously, described positive stop hook end towards the hook part of the circular arc of interior lever and protrusion by spacing for the arc sections of interior lever and allow its generation freely rotatable, the location utilizing positive stop hook can rotate spacing for interior lever in its design plane, ensure the steady and accuracy pressing interlock switch rotated.
It has been arranged around outer rotary shaft 321 at described door bolt plate 300 medial center place, described outer lever 320 is rotatably set in outer rotary shaft 321, described outer lever 320 upper end is formed and the stress surface 322 of described lower door bolt 220 effect, and described stress surface is vertical to be extended with described outer lever to keep corresponding up and down with the stress surface of interior lever to the inside.The lower end of described outer lever 320 is formed and lower pressure surface 323, it is fixedly installed interlocking switch 420 in described outer lever 320 bottom spacedly, the button of described interlocking switch is towards pressure surface under the bottom of outer lever 323, when the upper end stress surface of outer lever is touched pressing, outer lever rotates around outer rotary shaft, and bottom is by the button of pressing interlocking switch.For guaranteeing that described lower contact surface can steadily press the button of interlock switch when rotated, described lower contact surface 323 is provided with arc angling with interlocking switch sides adjacent.
Resetting in time for ensureing that described outer lever is flat, be provided with extension spring 340 between described outer lever and door bolt plate 300, outer lever can be departed from the button of release two interlocking switches that reset when door bolt presses by described extension spring 340 in time.
For preventing described outer lever from upset or the movement of front and back occurring when rotating, be respectively formed with in the left and right sides of described interior regulations and parameters with outer rotary shaft be the center of circle left circular arc 326 and right circular arc 327, be formed with on described door bolt plate can by embedding for described left circular arc outer rim containing left limit hook 308 therein and right limit hook 309 simultaneously, and hook part is protruded by spacing for the arc sections of outer lever and allow its generation freely rotatable towards the circular arc of interior lever in described positive stop hook end.Wherein, for to described outer lever rotary stopper, described outer lever offers spacing hole 329, right limit hook 309 is arranged in spacing hole 329, described right circular arc 327 forms the top edge at spacing hole 329, right limit hook 309 right circular arc outer rim is spacing and while allowing it to rotate freely, right limit hook coupler body itself by with the coordinating and the rotating distance of outer lever be construed as limiting of spacing hole 329, it is prevented that its excessive deflection.
Below the effect of the interlock of the door for microwave oven of the present invention with said structure is illustrated.In microwave oven, door can optionally covering outer and cooking room, in the cooking, it is prevented that the microwave within cooking room is to External leakage.For this, in time closing door, door will be combined closely on front panel, and the upper and lower side highlighting the door bolt at the door back side inserts towards the rear of front panel respectively through door bolt groove.Upper door bolt presses the stress surface of interior lever makes it rotate, interior lever first-selection is touched interlocking switch 410 and is then touched interlocking switch 400, two interlocking switches complete primary and secondary loop switch and ensure that the time delay of about 10ms, make operation more stable, lower door bolt touches outer lever and makes it rotate, outer lever can press described display interlocking switch 420, shows controlling microwave oven.When the door is opened, interior outer lever resets under the effect of reset tension spring, and each interlocking switch button is upspring.
In sum, the interlock of the present invention adopts lever rotating type trigger architecture, adopts direct pressing mode, it does not have lock hook structure, makes the pressing of microswitch more directly, reliably；And pressing and release process are easily stable, lever stress is little avoids switch gate difficulty, noise etc. bad；Adopt and interlocking switch is designed as monolithic construction, reducing mismachining tolerance, pressing is relatively reliable, and on microwave oven cavity front panel, design has a long and narrow hole and installs bib simultaneously, door bolt plate is avoided to promote pressing microswitch under non-normal condition, it is prevented that security incident occurs.
It it is only the preferred embodiment of the present invention by the above; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
1. the interlock of a microwave oven, including door bolt, door bolt groove and the door bolt plate being fixedly installed on door bolt groove rear portion, it is characterized in that: inside and outside described door bolt plate, be respectively rotatably fixedly installed interior lever and outer lever, be respectively arranged with reset tension spring between described interior outer lever and door bolt plate and be respectively formed with can with the stress surface of door bolt effect in its upper end；Wherein, the lower end of described interior lever is formed with lower pressure surface (313), interior lever side is formed with the second pressure surface (314) outwardlyly, and the interlocking switch of major loop and minor loop can be fixedly installed on door bolt plate interferingly with described lower pressure surface and the second pressure surface interval respectively；The lower end of described outer lever is formed with lower pressure surface (323), and interlocking switch and described lower pressure surface (323) interval of show circuit are configured to be fixedly installed on door bolt plate.
2. the interlock of microwave oven as claimed in claim 1, it is characterised in that: described door bolt includes door bolt and lower door bolt in tabular, and described lower door bolt is shorter than described upper door bolt.
3. the interlock of microwave oven as claimed in claim 2, it is characterized in that: the side of the front panel (200) before microwave oven cavity is provided with upper door bolt groove (210) corresponding with described upper-lower door latch respectively and lower door bolt groove (220), wherein said lower door bolt groove (220) is a long and narrow hole, is fixedly installed bib (230) thereon.
4. the interlock of the microwave oven as described in any one of claim 1-3, it is characterized in that: being respectively arranged with at least one locating dowel inside and outside described door bolt plate, described locating dowel coordinates, with the spacing hole on described interior lever or outer lever accordingly, the maximum displacement that can limit interior lever or outer lever.
5. the interlock of microwave oven as claimed in claim 4, it is characterized in that: described interior lever or the outer lever left and right sides be respectively formed with its rotating shaft be the center of circle left circular arc and right circular arc, be fixedly installed respectively inside and outside on described door bolt plate can by embedding to described left circular arc, right circular arc outer rim containing left limit hook therein and right limit hook, described left limit hook, right limit chimoto towards the rotating shaft of inside and outside lever and its hook part by spacing for arc sections and allow its generation freely rotatable.
6. the interlock of microwave oven as claimed in claim 5, it is characterised in that: offering spacing hole on described outer lever and be confined in described spacing hole by right limit hook, the right circular arc of described outer lever forms the top edge at spacing hole.
7. the interlock of microwave oven as claimed in claim 1, it is characterised in that: the sides adjacent of the lower pressure surface (313) of described interior lever and the lower pressure surface (323) of outer lever and each self-corresponding interlocking switch is respectively arranged with arc angling structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110397991.8A CN103134091B (en) | 2011-12-05 | 2011-12-05 | The interlock of microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110397991.8A CN103134091B (en) | 2011-12-05 | 2011-12-05 | The interlock of microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103134091A CN103134091A (en) | 2013-06-05 |
| CN103134091B true CN103134091B (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110397991.8A Expired - Fee Related CN103134091B (en) | 2011-12-05 | 2011-12-05 | The interlock of microwave oven |
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| Country | Link |
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| CN (1) | CN103134091B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104406207B (en) * | 2014-10-28 | 2016-12-07 | 惠而浦（中国）股份有限公司 | A kind of protection device of side-pull type enabling microwave oven |
| CN104879799B (en) * | 2015-05-26 | 2017-06-16 | 宁波方太厨具有限公司 | A kind of safety door latch mechanism for preventing steam and microwave leakage |
| CN105042649A (en) * | 2015-07-08 | 2015-11-11 | 广东美的厨房电器制造有限公司 | Microwave cooking utensil |
| CN105889995B (en) * | 2016-06-12 | 2017-12-29 | 广东美的厨房电器制造有限公司 | Interlocking switch structure and micro-wave oven |
| CN111035235B (en) * | 2019-12-31 | 2022-07-01 | 广东美的厨房电器制造有限公司 | Cooking kitchen ware door body, control box, cooking kitchen ware body and cooking kitchen ware |
| WO2023232107A1 (en) * | 2022-06-01 | 2023-12-07 | 广东美的厨房电器制造有限公司 | Interlock device for microwave oven, and microwave oven |
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| CN1428538A (en) * | 2001-12-25 | 2003-07-09 | 乐金电子(天津)电器有限公司 | Microwave oven |
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| CN1532459A (en) * | 2003-03-19 | 2004-09-29 | Lg电子株式会社 | Door assembly of microwave oven |
| CN1882809A (en) * | 2003-10-16 | 2006-12-20 | Lg电子株式会社 | Microwave oven and latch board in the microwave oven |
| CN101071018A (en) * | 2006-05-12 | 2007-11-14 | 泰州乐金电子冷机有限公司 | Refrigerator with mortise lock drink cabinet door |
| KR20080066274A (en) * | 2007-01-11 | 2008-07-16 | 주식회사 엘지화학 | Assistance locking apparatus of door |
| CN101298821A (en) * | 2007-04-30 | 2008-11-05 | 李京岐 | Multi-functional window structure |
| KR20110058025A (en) * | 2009-11-25 | 2011-06-01 | (주)엘지하우시스 | Apparatus and method of window locking unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10143640C5 (en) * | 2001-09-06 | 2007-02-08 | Rational Ag | Safety device for walk-in interiors, in particular of cooking appliances |
| JP2003260244A (en) * | 2002-03-12 | 2003-09-16 | Nk Parts Kogyo:Kk | Locking device for game machine |
| JP2005097866A (en) * | 2003-09-22 | 2005-04-14 | Sanritsu Giken Kogyo Kk | Locking device by handle operation |
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- 2011-12-05 CN CN201110397991.8A patent/CN103134091B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1428538A (en) * | 2001-12-25 | 2003-07-09 | 乐金电子(天津)电器有限公司 | Microwave oven |
| CN2565932Y (en) * | 2002-08-26 | 2003-08-13 | 李正军 | Sliding, horizontal opening and rotary multifunctional combined window |
| CN1532459A (en) * | 2003-03-19 | 2004-09-29 | Lg电子株式会社 | Door assembly of microwave oven |
| CN1882809A (en) * | 2003-10-16 | 2006-12-20 | Lg电子株式会社 | Microwave oven and latch board in the microwave oven |
| CN101071018A (en) * | 2006-05-12 | 2007-11-14 | 泰州乐金电子冷机有限公司 | Refrigerator with mortise lock drink cabinet door |
| KR20080066274A (en) * | 2007-01-11 | 2008-07-16 | 주식회사 엘지화학 | Assistance locking apparatus of door |
| CN101298821A (en) * | 2007-04-30 | 2008-11-05 | 李京岐 | Multi-functional window structure |
| KR20110058025A (en) * | 2009-11-25 | 2011-06-01 | (주)엘지하우시스 | Apparatus and method of window locking unit |
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| Publication number | Publication date |
|---|---|
| CN103134091A (en) | 2013-06-05 |
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Granted publication date: 20160629 Termination date: 20161205 |