CN107484288A - Interlocking switch - Google Patents
Interlocking switch Download PDFInfo
- Publication number
- CN107484288A CN107484288A CN201710823065.XA CN201710823065A CN107484288A CN 107484288 A CN107484288 A CN 107484288A CN 201710823065 A CN201710823065 A CN 201710823065A CN 107484288 A CN107484288 A CN 107484288A
- Authority
- CN
- China
- Prior art keywords
- shell fragment
- switch base
- switch
- straight panel
- microswitch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012634 fragment Substances 0.000 claims abstract description 47
- 230000003068 static effect Effects 0.000 claims abstract description 31
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000005056 compaction Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/6414—Aspects relating to the door of the microwave heating apparatus
- H05B6/6417—Door interlocks of the microwave heating apparatus and related circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a kind of interlocking switch, including switch base, switch base is provided with primary microswitch, monitoring microswitch and secondary microswitch, primary microswitch, monitoring microswitch and secondary microswitch include switch base, COM terminals, connection sheet and shell fragment are equipped with each switch base, one end of COM terminals is arranged in switch base, and the other end passes switch base setting；One end of connection sheet is set with button connects, and the other end is connected setting with COM terminals；One end of shell fragment is set with the clamping of COM terminals, and static contact is equipped with above and below shell fragment, and the middle part of shell fragment is provided with extension spring, and one end and the connection sheet of extension spring are fixedly installed.The present invention, connection sheet and shell fragment are fixed on COM terminals by extension spring, in use, door of microwave oven can ensure that shell fragment is constantly in compaction with COM terminals during open and close, electric conductivity is stable, prevents the circuit brought by vibrations and connects unstable phenomenon generation.
Description
Technical field
The present invention relates to the stove door switch of micro-wave oven, and in particular to interlocking switch.
Background technology
Micro-wave oven is that kitchen range are cooked in a kind of modernization with microwave heating of food, because its heating is fast, easy to use, operation
Simply it is widely applied by people.
Door of microwave oven is a main building block of micro-wave oven, in order to ensure fire door normal switching-off, prevent microwave from leaking
The phenomenon of magnetic occurs, and three stove door switch are typically provided with door of microwave oven, and two of which is closed at when fire door is closed,
Be not closed completely above the fire door or below it is not tight when, just have a stove door switch and disconnect, the power supply of whole micro-wave oven
Disconnect, i.e., can not start working, it is therefore prevented that the phenomenon of microwave from leakage occurs.In the stove door switch of this couplet on the door, also one
The switch to shield, refer to close when blow-on door and connect, prevent upper and lower two stove door switch from damaging, such as when upper and lower
Stove door switch can also switch on power in the case of normality short circuit, during enabling, cause the leakage of microwave.
Circuit connection in stove door switch is mainly to be realized by the clamping of connection sheet and shell fragment, by shell fragment and often
Open haptic element and the break-make for carrying out control circuit is connected with normally closed haptic element, but this device is led in the switching process of fire door due to shaking
Cause contact of the connection sheet with shell fragment unstable, easily shake and cause the unstable of circuit connection, cause three fire doors to open
Close action sequence to change, and cause electrically bad.
As can be seen here, stove door switch of the prior art deposits the problem of internal circuit connection is unstable in use.
The content of the invention
The technical problems to be solved by the invention are that current stove door switch deposits internal circuit connection in use not
The problem of stable.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention there is provided a kind of interlocking switch, including
Switch base, bottom, middle part and the top of the switch base are respectively equipped with primary microswitch, monitoring microswitch and secondary fine motion
Switch, the primary microswitch, monitoring microswitch and secondary microswitch include switch base, each switch base
Inside it is equipped with：
COM terminals, one end are arranged in the switch base, and the other end passes the switch base and set, for electricity
Road connects；
Connection sheet, one end and button connects are set, and the other end is connected setting with the COM terminals, the button it is another
End passes the switch base；
Shell fragment, one end are set with the COM terminals clamping, and the both sides up and down of the other end are equipped with movable contact, the shell fragment
Above and below be equipped with static contact, two static contacts are equipped with stationary contact, the bullet close to the side of the shell fragment
The middle part of piece is provided with extension spring, and one end of the extension spring is fixedly installed through the COM terminals and with the connection sheet, and configures
For：
Button press, presses the connection sheet, and the connection sheet drives the bullet by the COM terminals and the extension spring
The direction of action of piece towards the button is moved.
The COM terminals include being used for the first straight panel of the clip clamping and for the with the connection sheet clamping
Two straight panels, first straight panel, the second straight panel are connected by the 3rd straight panel, the 3rd straight panel and first straight panel, second
Straight panel is vertically arranged, and the other end of first straight panel, which stretches out the switch base and vertically extended to side, to be used for and electricity
4th straight panel of road connection.
First straight panel, the second straight panel, the first opening, the second opening are respectively equipped with the middle part of the 3rd straight panel, the 3rd is opened
Mouthful, first opening, the second opening, the 3rd opening communicate, and one end of the connection sheet extends outward into the first lug boss, institute
The first lug boss is stated by being arranged on the long struts at the middle part on the top of the connection sheet and being symmetricly set on the long struts both sides
Sprag composition, the tops of two sprags is in the trapezoidal shape drawn close towards side, and first straight panel is close to the company
The side of contact pin is provided with the first neck being adapted with two sprags, and the long struts are set through the described first opening
Put.
The connection sheet is provided with two the first dog holes, and the shell fragment is provided with the second dog hole, and one end of the extension spring is set
Put on second dog hole, the other end of the extension spring through the described second opening and is arranged on two first dog holes
On, the shell fragment is provided with and is available for the mounting groove that the extension spring is put.
The shell fragment is by a connecting plate and be symmetrically extended by the connecting plate towards the second straight panel direction two
First pillar is formed, and second dog hole is arranged on the connecting plate, and the installation is formed between two first pillars
Groove, the both sides of two first pillars extend outward into the second pillar, and the top of two second pillars is in be leaned on towards side
The trapezoidal shape held together, the both sides of two second straight panels are provided with the second neck being adapted with second pillar.
The center of first opening is provided with fore-set, and the long struts are arranged on the top of the fore-set.
The inwall of the switch base is provided with and is available for the guide groove that second straight panel is moved in vertical direction.
Each switch base is equipped with the switch cover being adapted to it, and each switch base and the switch cover engage
Set.
The static contact is normally opened by be arranged in the switch base of the primary microswitch, secondary microswitch first
Static contact and the normally closed static contact being arranged in the switch base of the monitoring microswitch, the second normally opened static contact composition, institute
The one end for stating the first normally opened static contact is arranged on the side of the shell fragment, and the other end stretches out the switch base and is used for and circuit
Connection, the inwall of the switch base are provided with contact plate along the extension of its horizontal direction, the contact plate towards the shell fragment one
Side is provided with normally-closed contact, and the normally closed static contact, one end of the second normally opened static contact are separately positioned on the both sides of the shell fragment, institute
State normally closed static contact, the other end of the second normally opened static contact passes the switch base and set.
The present invention, connection sheet and shell fragment are fixed on COM terminals by extension spring, in use, door of microwave oven is in open and close
During can ensure that shell fragment and COM terminals are constantly in compaction, electric conductivity is stable, prevents what is brought by vibrations
Circuit connects unstable phenomenon and occurred.
Brief description of the drawings
Fig. 1 is the exploded view of the present invention；
Fig. 2 is the assembling figure of the present invention；
Fig. 3 is the structural representation of the inside of the switch base of the present invention；
Fig. 4 is the front view of the present invention；
Fig. 5 is the right view of the present invention；
Fig. 6 is the structural representation of the COM terminals of the present invention；
Fig. 7 is the structural representation of the connection sheet of the present invention；
Fig. 8 is the structural representation of the shell fragment of the present invention；
Fig. 9 is the structural representation at A in Fig. 4 of the invention；
Figure 10 is the structural representation at B in Fig. 5 of the invention.
Embodiment
The present invention is described in detail with reference to specific embodiment and Figure of description.
As shown in Figure 1, Figure 2 and Figure 3, the invention provides a kind of interlocking switch, including switch base, the bottom of switch base,
Middle part and top are respectively equipped with primary microswitch, monitoring microswitch and secondary microswitch, and primary microswitch, monitoring are micro-
Dynamic switch and secondary microswitch include switch base 100, and COM terminals 200 are equipped with each switch base 100 i.e. with public affairs
Contact chip, connection sheet 300 and the shell fragment 400 of contact altogether.
The one end of COM terminals 200 is arranged in switch base 100, and the other end passes switch base 100 and set, for electricity
Road connects.
The one end of connection sheet 300 is connected setting with button 600, and the other end is connected setting with COM terminals 200, button 600 it is another
One end passes switch base 100.
The one end of shell fragment 400 is set with the clamping of COM terminals 200, and the both sides up and down of the other end are equipped with movable contact, shell fragment 400
Above and below be equipped with static contact, two static contacts are equipped with stationary contact close to the side of shell fragment 400, in shell fragment 400
Portion is provided with extension spring 500, and one end of extension spring 500 is fixedly installed through COM terminals 200 and with connection sheet 300.
The present invention operation principle be：
When door opened, in switch base in the presence of back-moving spring, primary microswitch and secondary microswitch stop
Only work, prevent in the case of oven door opening, continue energization work in micro-wave oven, the phenomenon for causing magnetic to reveal occurs, now
Monitoring microswitch circuit is disconnected, prevent because the circuit connection failure of primary microswitch and secondary microswitch from without
The phenomenon for playing disconnecting circuit occurs, and plays secondary protective effect；
When the fire door of micro-wave oven is closed, the inwall of micro-wave oven presses button 600, presses connection sheet 300, connection sheet 300
Moved by direction of action of the COM terminals 200 with spring plate 400 towards button 600, drive primary microswitch, monitoring fine motion
Pass connects with the circuit in secondary microswitch, makes whole power on circuitry, micro-wave oven normal use, when fire door visit or Xiamen
There is one when being not completely turned off, primary microswitch or secondary microswitch will not work, and micro-wave oven will be unable to be heated,
In whole process, extension spring 500 can ensure that shell fragment 400 is constantly in compaction with COM terminals 200, and electric conductivity is stable, prevents
Only occur because the circuit that vibrations caused by switch gate are brought connects unstable phenomenon.
As shown in fig. 6, COM terminals 200 include being used for and the first straight panel 210 of the clamping of shell fragment 400 and are used for and connection sheet
Second straight panel 220 of 300 clampings, the first straight panel 210, the second straight panel 220 are connected by the 3rd straight panel 230, the 3rd straight panel 230 with
First straight panel 210, the second straight panel 220 are vertically arranged, and the other end of the first straight panel 210 stretches out switch base 100 and to side
Vertically extend the 4th straight panel 240 for being connected with circuit.
First straight panel 210, the second straight panel 220, the middle part of the 3rd straight panel 230 are respectively equipped with the first opening 211, second opening
221st, the 3rd opening 231, the opening of first the 211, second opening of opening the 221, the 3rd 231 communicate, and one end of connection sheet 300 is to extension
The first lug boss is stretched into, the first lug boss is by being arranged on the long struts 310 at the middle part on the top of connection sheet 300 and being symmetricly set on
The sprag 320 of the both sides of long struts 310 forms, and the top of two sprags 320 is in the trapezoidal shape drawn close towards side, the first straight panel
210 are provided with the first neck 212 for being adapted with two sprags 320 close to the side of connection sheet 300, and long struts 310 are through the
One opening 211 is set, and connected mode is simple, occupies little space, and saves manufacturing cost.
As shown in fig. 7, connection sheet 300 is provided with two the first dog holes 301, shell fragment 400 is provided with the second dog hole 411, draws
One end of spring 500 is arranged on the second dog hole 411, and the other end of extension spring 500 is through the second opening 221 and is arranged on two first
On dog hole 301, shell fragment 400 is provided with and is available for the mounting groove 430 that extension spring 500 is put, and is easy to the installation of extension spring 500.
As shown in figure 8, shell fragment 400 is symmetrical towards the direction of the second straight panel 220 by a connecting plate 410 and by connecting plate 410
Two the first pillars 420 of extension are formed, and the second dog hole 411 is arranged on connecting plate 410, group between two the first pillars 420
Into mounting groove 430, the both sides of two the first pillars 420 extend outward into the second pillar 421, the top of two the second pillars 421
In the trapezoidal shape drawn close towards side, the both sides of two the second straight panels 220 are provided with the second neck being adapted with the second pillar 421
222。
As shown in fig. 6, the center of the first opening 211 is provided with fore-set 213, long struts 310 are arranged on the upper of fore-set 213
Side, it is simple in construction, realize the motion of COM terminals 200 in vertical direction.
The inwall of switch base 100 is provided with and is available for the guide groove that the second straight panel 220 is moved in vertical direction, prevents it
The square movement of occurred level, make whole device more stable.
As shown in Fig. 2 each switch base 100 is equipped with the switch cover 700 being adapted to it, each switch base 100 and switch
Lid 700 engages setting, prevents the impurity such as dust from entering the inside of switch base 100, ensures the safety of circuit, and increase uses
Life-span.
As shown in Fig. 4, Fig. 5, Fig. 9 and Figure 10, static contact is by being arranged on the switch of primary microswitch, secondary microswitch
The first normally opened static contact 810 in pedestal 100 and the normally closed static contact being arranged in the switch base 100 of monitoring microswitch
900th, the second normally opened static contact 910 forms, and one end of the first normally opened static contact 810 is arranged on the side of shell fragment 400, and the other end is stretched
Go out switch base 100 and be provided with contact plate 800 along the extension of its horizontal direction for the connection with circuit, the inwall of switch base 100,
Contact plate 800 is provided with normally-closed contact, normally closed static contact 900, one end difference of the second normally opened static contact 910 towards the side of shell fragment
The both sides of shell fragment 400 are arranged on, normally closed static contact 900, the other end of the second normally opened static contact 910 pass switch base 100
Set, for the connection with circuit, by normally opened, normally-closed contact conversion come the connection of control circuit.
The present invention, connection sheet and shell fragment are fixed on COM terminals by extension spring, in use, door of microwave oven is in open and close
During can ensure that shell fragment and COM terminals are constantly in compaction, electric conductivity is stable, prevents what is brought by vibrations
Circuit connects unstable phenomenon and occurred.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn that the knot made under the enlightenment of the present invention
Structure changes, and the technical schemes that are same or similar to the present invention, each falls within protection scope of the present invention.
Claims (9)
1. interlocking switch, including switch base, bottom, middle part and the top of the switch base are respectively equipped with primary microswitch, prison
Microswitch and secondary microswitch are controlled, the primary microswitch, monitoring microswitch and secondary microswitch include opening
Close pedestal, it is characterised in that be equipped with each switch base：
COM terminals, one end are arranged in the switch base, and the other end passes the switch base and set, for connecting with circuit
Connect；
Connection sheet, one end are set with button connects, and the other end is connected setting with the COM terminals, and the other end of the button is worn
Go out the switch base；
Shell fragment, one end and the COM terminals clamping are set, and the both sides up and down of the other end are equipped with movable contact, the shell fragment it is upper
Side and lower section are equipped with static contact, and two static contacts are equipped with stationary contact close to the side of the shell fragment, the shell fragment
Middle part is provided with extension spring, and one end of the extension spring is fixedly installed through the COM terminals and with the connection sheet, and is configured to：
Button press, presses the connection sheet, and the connection sheet drives the shell fragment court by the COM terminals and the extension spring
Moved to the direction of action of the button.
2. interlocking switch as claimed in claim 1, it is characterised in that the COM terminals include being used for and the clip clamping
The first straight panel and pass through the 3rd straight panel for the second straight panel with the connection sheet clamping, first straight panel, the second straight panel
Connection, the 3rd straight panel are vertically arranged with first straight panel, the second straight panel, and the other end of first straight panel stretches out institute
State switch base and vertically extend the 4th straight panel for being connected with circuit to side.
3. interlocking switch as claimed in claim 2, it is characterised in that in first straight panel, the second straight panel, the 3rd straight panel
Portion is respectively equipped with the first opening, the second opening, the 3rd opening, and first opening, the second opening, the 3rd opening communicate, described
One end of connection sheet extends outward into the first lug boss, and first lug boss is by being arranged on the middle part on the top of the connection sheet
Long struts and be symmetricly set on the sprag compositions of the long struts both sides, the tops of two sprags towards side in leaning on
The trapezoidal shape held together, first straight panel are provided with the first card being adapted with two sprags close to the side of the connection sheet
Groove, the long struts are set through the described first opening.
4. interlocking switch as claimed in claim 3, it is characterised in that the connection sheet is provided with two the first dog holes, described
Shell fragment is provided with the second dog hole, and one end of the extension spring is arranged on second dog hole, and the other end of the extension spring passes through institute
State the second opening and be arranged on two first dog holes, the shell fragment is provided with and is available for the mounting groove that the extension spring is put.
5. interlocking switch as claimed in claim 4, it is characterised in that the shell fragment is by a connecting plate and by the connecting plate
Two the first pillars composition being symmetrically extended towards the second straight panel direction, second dog hole are arranged on the connecting plate
On, the mounting groove is formed between two first pillars, the both sides of two first pillars extend outward into second
Post, the top of two second pillars are in the trapezoidal shape drawn close towards side, and the both sides of second straight panel are provided with and two institutes
State the second neck that the second pillar is adapted.
6. interlocking switch as claimed in claim 3, it is characterised in that the center of first opening is provided with fore-set, institute
State the top that long struts are arranged on the fore-set.
7. interlocking switch as claimed in claim 2, it is characterised in that the inwall of the switch base, which is provided with, is available for described the
The guide groove that two straight panels are moved in vertical direction.
8. interlocking switch as claimed in claim 1, it is characterised in that each switch base is equipped with the switch being adapted to it
Lid, each switch base and the switch cover engage setting.
9. interlocking switch as claimed in claim 1, it is characterised in that the static contact is opened by being arranged on the primary fine motion
Close, the first normally opened static contact in the switch base of secondary microswitch and the switch base for being arranged on the monitoring microswitch
Interior normally closed static contact, the second normally opened static contact composition, one end of the first normally opened static contact is arranged on the one of the shell fragment
Side, the other end stretch out the switch base and extended for the connection with circuit, the inwall of the switch base along its horizontal direction
Provided with contact plate, the contact plate is provided with normally-closed contact towards the side of the shell fragment, the normally closed static contact, second normally opened quiet
One end of contact is separately positioned on the both sides of the shell fragment, and the other end passes the switch base and set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823065.XA CN107484288B (en) | 2017-09-13 | 2017-09-13 | Interlocking switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823065.XA CN107484288B (en) | 2017-09-13 | 2017-09-13 | Interlocking switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107484288A true CN107484288A (en) | 2017-12-15 |
| CN107484288B CN107484288B (en) | 2024-03-26 |
Family
ID=60585296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710823065.XA Active CN107484288B (en) | 2017-09-13 | 2017-09-13 | Interlocking switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107484288B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001381A (en) * | 2021-10-12 | 2022-02-01 | 安徽省宁国市天成电机有限公司 | Heater for microwave oven |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321445A (en) * | 1980-01-28 | 1982-03-23 | Whirlpool Corporation | Door latch interlock system for microwave oven |
| JP2004039460A (en) * | 2002-07-04 | 2004-02-05 | Omron Corp | Switch unit and door switch for microwave oven |
| CN2857181Y (en) * | 2006-01-23 | 2007-01-10 | 陈伟培 | Microswitch |
| CN2901100Y (en) * | 2006-05-27 | 2007-05-16 | 广东格兰仕集团有限公司 | Interlocking mechanism for microwave oven door |
| JP2009048783A (en) * | 2007-08-13 | 2009-03-05 | Sobo Yu | Automatic disconnecting structure of switch |
| CN204045416U (en) * | 2014-07-09 | 2014-12-24 | 东莞市华精电子有限公司 | A kind of spring plate microswitch |
| CN204407223U (en) * | 2015-02-04 | 2015-06-17 | 浙江宇洋科技有限公司 | Sensitive switch |
| CN207251953U (en) * | 2017-09-13 | 2018-04-17 | 浙江宇洋科技有限公司 | Interlocking switch |
-
2017
- 2017-09-13 CN CN201710823065.XA patent/CN107484288B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321445A (en) * | 1980-01-28 | 1982-03-23 | Whirlpool Corporation | Door latch interlock system for microwave oven |
| JP2004039460A (en) * | 2002-07-04 | 2004-02-05 | Omron Corp | Switch unit and door switch for microwave oven |
| CN2857181Y (en) * | 2006-01-23 | 2007-01-10 | 陈伟培 | Microswitch |
| CN2901100Y (en) * | 2006-05-27 | 2007-05-16 | 广东格兰仕集团有限公司 | Interlocking mechanism for microwave oven door |
| JP2009048783A (en) * | 2007-08-13 | 2009-03-05 | Sobo Yu | Automatic disconnecting structure of switch |
| CN204045416U (en) * | 2014-07-09 | 2014-12-24 | 东莞市华精电子有限公司 | A kind of spring plate microswitch |
| CN204407223U (en) * | 2015-02-04 | 2015-06-17 | 浙江宇洋科技有限公司 | Sensitive switch |
| CN207251953U (en) * | 2017-09-13 | 2018-04-17 | 浙江宇洋科技有限公司 | Interlocking switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001381A (en) * | 2021-10-12 | 2022-02-01 | 安徽省宁国市天成电机有限公司 | Heater for microwave oven |
| CN114001381B (en) * | 2021-10-12 | 2024-05-03 | 安徽省宁国市天成电机有限公司 | Microwave oven |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107484288B (en) | 2024-03-26 |
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