CN210378767U - Capacitor for microwave oven - Google Patents
Capacitor for microwave oven Download PDFInfo
- Publication number
- CN210378767U CN210378767U CN201921487786.9U CN201921487786U CN210378767U CN 210378767 U CN210378767 U CN 210378767U CN 201921487786 U CN201921487786 U CN 201921487786U CN 210378767 U CN210378767 U CN 210378767U
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- China
- Prior art keywords
- capacitor
- sleeve
- metal shell
- plastic outer
- core
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- 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.)
- Expired - Fee Related
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- 239000003990 capacitor Substances 0.000 title claims abstract description 88
- 239000002184 metal Substances 0.000 claims abstract description 66
- 239000004033 plastic Substances 0.000 claims abstract description 42
- 229920003023 plastic Polymers 0.000 claims abstract description 42
- 238000001746 injection moulding Methods 0.000 claims abstract description 16
- 238000000605 extraction Methods 0.000 claims abstract description 14
- 239000003822 epoxy resin Substances 0.000 claims description 23
- 229920000647 polyepoxide Polymers 0.000 claims description 23
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000002991 molded plastic Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to a condenser for microwave oven, it includes metal casing, electric capacity core and extraction electrode, and metal casing's one end is equipped with opens the mouth, extraction electrode and electric capacity core electric connection, the outer parcel of electric capacity core has the plastics overcoat, and the plastics overcoat is moulded plastics with extraction electrode an organic whole, and electric capacity core and plastics overcoat set up in metal casing, and extraction electrode one end is passed plastics overcoat top and is stretched out outside metal casing's the opening mouth. The plastic outer sleeve wrapped outside the capacitor core of the capacitor for the microwave oven is an injection molding piece, the injection molding piece has good compactness, and the insulation performance of the injection molding piece is reliable, so that the insulation performance between the capacitor core and the metal shell can be improved.
Description
Technical Field
The utility model relates to a condenser technical field, especially a condenser that is used for microwave oven with metal casing.
Background
The existing microwave oven capacitor comprises a metal shell, a capacitor core, an insulating film and a lead-out electrode, wherein the metal shell is cylindrical, an open opening is formed in one end of the metal shell, the other end of the metal shell is closed, the capacitor core is arranged in the metal shell and is electrically connected with the lead-out electrode, the lead-out electrode extends out of the metal shell, the insulating film surrounds the periphery of the capacitor core, the open opening of the metal shell is packaged by epoxy resin, or the open opening is packaged by combining a cover plate and the epoxy resin; an electrode sleeve (insulating part) is arranged outside the extraction electrode, the electrode sleeve belongs to an independent component, and the lower end of the extraction electrode and the inner wall of the electrode sleeve are sealed through epoxy resin. The capacitor core and the metal shell of the microwave oven capacitor with the structure are encapsulated by epoxy resin, and air bubbles are easily formed in the epoxy resin, so that the insulativity between the capacitor core and the shell is influenced (the capacitor works under high pressure and has higher requirement on the insulativity); in addition, the use amount of the epoxy resin is large, the drying speed is slow, and the production efficiency is seriously influenced.
Disclosure of Invention
An object of the utility model is to provide a simple structure, reasonable, the electric capacity core and the metal casing between insulating nature good, production efficiency high be used for the condenser of microwave oven to overcome prior art not enough.
The purpose of the utility model is realized like this:
the utility model provides a condenser for microwave oven, includes metal casing, electric capacity core and extraction electrode, and metal casing's one end is equipped with opens the mouth, extraction electrode and electric capacity core electric connection, its characterized in that: the capacitor core is wrapped by a plastic outer sleeve, the plastic outer sleeve and the leading-out electrode are integrally molded, the capacitor core and the plastic outer sleeve are arranged in the metal shell, and one end of the leading-out electrode penetrates through the top of the plastic outer sleeve and extends out of the open opening of the metal shell.
The purpose of the utility model can also adopt the following technical measures to solve:
as a more specific scheme, an epoxy resin layer is poured in an opening of the metal shell, and the epoxy resin layer encapsulates the plastic outer sleeve and the capacitor core in the metal shell; the plastic outer sleeve comprises an upper fixed sleeve and a bottom cover, a sleeve cavity is formed in the bottom of the upper fixed sleeve, the capacitor core is located in the sleeve cavity, the capacitor core and the upper fixed sleeve are integrally formed in an injection molding mode, and the upper fixed sleeve extends to the bottom surface of the capacitor core; the bottom cover is sleeved outside the bottom of the upper fixing sleeve.
The periphery of the upper fixing sleeve is also wrapped with an insulating film (such as highland barley paper), and the lower end of the insulating film is inserted into the bottom cover.
An epoxy resin layer is poured into the opening of the metal shell, and the plastic outer sleeve and the capacitor core are encapsulated in the metal shell through the epoxy resin layer; the plastic outer sleeve comprises an upper fixing sleeve and a lower fixing sleeve, an upper sleeve cavity is formed in the bottom of the upper fixing sleeve, the upper portion of the capacitor core is inserted into the upper sleeve cavity, a lower sleeve cavity is formed in the top of the lower fixing sleeve, the lower portion of the capacitor core is inserted into the lower sleeve cavity, and the bottom surface of the upper fixing sleeve is in concave-convex insertion fit with the top surface of the lower fixing sleeve (the sealing degree of the joint of the upper fixing sleeve and the lower fixing sleeve is improved); the upper fixing sleeve or the lower fixing sleeve and the capacitor core are integrally formed by injection molding.
The plastic outer sleeve is an integral body and is integrally injection-molded with the capacitor core and the leading-out electrode; the plastic outer sleeve is injected and molded in the metal shell, or the plastic outer sleeve, the capacitor core and the leading-out electrode are placed in the metal shell after injection molding, an epoxy resin layer is poured in an opening of the metal shell, and the plastic outer sleeve and the capacitor core are packaged in the metal shell through the epoxy resin layer.
The extraction electrode comprises an insert electrode, and a sheath is arranged on the top surface of the plastic outer sleeve corresponding to the periphery of the insert electrode.
The capacitor cores comprise two capacitor cores which are connected in series, a discharge resistor is connected in parallel between the two capacitor cores after being connected in series, and the discharge resistor and the upper fixed sleeve are integrally molded by injection; the lead-out electrode also comprises a lead electrode, one end of the lead electrode is electrically connected with one end of the two capacitor cores which are connected in series, the other end of the lead electrode extends out of the top of the upper fixed sleeve, one group of the insert electrodes is arranged, and the insert electrodes are electrically connected with the other ends of the two capacitor cores which are connected in series; or, the two groups of the inserting sheet electrodes are respectively and electrically connected with one ends of the two capacitor cores which are connected in series.
The diode is provided with two pins, one pin is electrically connected with any end of the two capacitor cores which are connected in series, and the other pin extends out of the metal shell or is in contact with the metal shell. When the other pin extends out of the metal shell, the other pin and the outer surface of the metal shell are hooped together through the hoop body and the metal shell is grounded when the capacitor is installed, and therefore electric leakage of the metal shell can be avoided.
The inner wall of metal casing is equipped with the insulating layer to promote its insulating effect, moreover, on the basis of this structure, set up outer turn-up with metal casing's open mouthful edge, can increase the creepage distance between inserted sheet electrode and the metal casing surface.
The metal shell is composed of a bottom plate and a surrounding plate, the bottom plate is in a waist-round shape, the lower end of the surrounding plate is connected with the periphery of the bottom plate into a whole, and the upper end of the surrounding plate is a straight edge or is provided with an external curled edge.
The utility model has the advantages as follows:
(1) the plastic outer sleeve wrapped outside the capacitor core of the capacitor for the microwave oven is an injection molding piece, the injection molding piece has good compactness, and the insulation performance of the injection molding piece is reliable, so that the insulation performance between the capacitor core and the metal shell can be improved.
(2) The plastic outer sleeve of the capacitor for the microwave oven occupies more space between the capacitor core and the metal shell, so that the using amount of packaging layer (epoxy resin layer) materials is reduced, and the production efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is an exploded schematic view of the first embodiment of the present invention.
Fig. 3 is another angle structure diagram of fig. 2.
Fig. 4 is a schematic top view of the first embodiment of the present invention.
FIG. 5 is a schematic sectional view A-A of FIG. 4.
Fig. 6 is a circuit diagram of the first embodiment of the present invention.
Fig. 7 is a circuit diagram of a second embodiment of the present invention.
Fig. 8 is an exploded view of the second embodiment of the present invention.
Fig. 9 is a schematic perspective view of a second embodiment of the present invention.
Fig. 10 is a schematic cross-sectional structure view of a third embodiment of the present invention.
Fig. 11 is an enlarged schematic view of E in fig. 10.
Fig. 12 is a schematic cross-sectional structure diagram of a fourth embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
In the first embodiment, referring to fig. 1 to 6, a capacitor for a microwave oven includes a metal housing 1, a capacitor core 8 and a lead-out electrode, wherein an open hole is formed at one end of the metal housing 1, the lead-out electrode is electrically connected with the capacitor core 8, a plastic casing 2 wraps the capacitor core 8, the plastic casing 2 and the lead-out electrode are integrally molded, the capacitor core 8 and the plastic casing 2 are disposed in the metal housing 1, one end of the lead-out electrode penetrates through the top of the plastic casing 2 and extends out of the open hole of the metal housing 1, an epoxy resin layer 5 is filled in the open hole, and the plastic casing 2 and the capacitor core 8 are encapsulated in the metal housing 1 by the epoxy resin layer 5.
The plastic outer sleeve 2 comprises an upper fixing sleeve 22 and a bottom cover 9, a sleeve cavity 23 is formed in the bottom of the upper fixing sleeve 22, the capacitor core 8 is located in the sleeve cavity 23, the capacitor core 8 and the upper fixing sleeve 22 are integrally formed in an injection molding mode, and the upper fixing sleeve 22 extends to the bottom surface of the capacitor core 8; the bottom cover 9 is sleeved outside the bottom of the upper fixing sleeve 22.
The periphery of the upper fixing sleeve 22 is also wrapped with an insulating film 10, and the lower end of the insulating film 10 is inserted into the bottom cover 9. Of course, if the insulation requirement can be achieved without the insulating film 10, the insulating film may be eliminated.
The extraction electrode comprises an insert electrode 6 (corresponding to the position B in fig. 6), and a sheath 21 is arranged on the top surface of the upper fixing sleeve 22 corresponding to the periphery of the insert electrode 6.
The capacitor core 8 comprises two capacitor cores 8 which are connected in series, a discharge resistor 7 is connected between the two capacitor cores 8 which are connected in series in parallel, and the discharge resistor 7 and the upper fixing sleeve 22 are integrally formed in an injection molding mode.
The lead-out electrode further comprises a lead electrode 4 (the lead electrode is a lead with an insulating sheath in essence), one end of the lead electrode 4 is electrically connected with one end of the two capacitor cores 8 which are connected in series (corresponding to the position C in fig. 6), the other end of the lead electrode 4 extends out of the top of the upper fixing sleeve 22 and is connected with a plug 41, a group of the insert electrodes 6 is arranged, and the insert electrodes 6 are electrically connected with the other ends of the two capacitor cores 8 which are connected in series.
The diode 3 is positioned outside the metal shell 1, the diode 3 is provided with two pins, one pin 31 penetrates through the epoxy resin layer 5 and the top of the upper fixing sleeve 22 and then is electrically connected with any end of the two capacitor cores 8 after being connected in series, and the other pin 32 (corresponding to the position D in fig. 6) extends out of the metal shell 1. The diode 3 is also located outside the metal housing 1.
The metal shell 1 is composed of a bottom plate and a surrounding plate, the bottom plate is in a waist circle shape, the lower end of the surrounding plate is connected with the periphery of the bottom plate into a whole, and the upper end of the surrounding plate is provided with an external turned edge 11.
As a further proposal, the inner wall of the metal shell 1 can be provided with an insulating layer.
The second embodiment is different from the first embodiment in that: referring to fig. 7 to 9, the tab electrodes 6 are provided in two groups, the two groups of tab electrodes 6 are electrically connected to one ends of the two capacitor cores 8 connected in series, respectively, and each group of tab electrodes 6 includes two tabs. Each group of the insert electrodes 6 is respectively provided with a sheath 21, and the two sheaths 21 are separated.
In addition, the diode is not provided in this embodiment.
The third embodiment is different from the first embodiment in that: referring to fig. 10 and 11, the plastic outer sleeve 2 includes an upper fixing sleeve 22 and a lower fixing sleeve 24, an upper sleeve cavity 23 is formed at the bottom of the upper fixing sleeve 22, the upper portion of the capacitor core 8 is inserted into the upper sleeve cavity 23, a lower sleeve cavity 23 is formed at the top of the lower fixing sleeve 24, the lower portion of the capacitor core 8 is inserted into the lower sleeve cavity 23, and the bottom surface of the upper fixing sleeve 22 is in concave-convex insertion fit with the top surface of the lower fixing sleeve 24; the upper fixing sleeve 22 and the capacitor core 8 are integrally formed by injection molding.
The fourth embodiment is different from the first embodiment in that: referring to fig. 12, the plastic casing 2 is a whole body, and is integrally injection-molded with the capacitor core 8 and the extraction electrode; the plastic outer sleeve 2 is formed by injection molding in the metal shell 1 (namely, an epoxy resin layer can be eliminated).
Claims (10)
1. The utility model provides a condenser for microwave oven, includes metal casing, electric capacity core and extraction electrode, and metal casing's one end is equipped with opens the mouth, extraction electrode and electric capacity core electric connection, its characterized in that: the capacitor core is wrapped by a plastic outer sleeve, the plastic outer sleeve and the leading-out electrode are integrally molded, the capacitor core and the plastic outer sleeve are arranged in the metal shell, and one end of the leading-out electrode penetrates through the top of the plastic outer sleeve and extends out of the open opening of the metal shell.
2. The capacitor for a microwave oven as claimed in claim 1, wherein: an epoxy resin layer is poured into the opening of the metal shell, and the plastic outer sleeve and the capacitor core are encapsulated in the metal shell through the epoxy resin layer; the plastic outer sleeve comprises an upper fixed sleeve and a bottom cover, a sleeve cavity is formed in the bottom of the upper fixed sleeve, the capacitor core is located in the sleeve cavity, the capacitor core and the upper fixed sleeve are integrally formed in an injection molding mode, and the upper fixed sleeve extends to the bottom surface of the capacitor core; the bottom cover is sleeved outside the bottom of the upper fixing sleeve.
3. The capacitor for a microwave oven as claimed in claim 2, wherein: the periphery of the upper fixing sleeve is further wrapped with an insulating film, and the lower end of the insulating film is inserted into the bottom cover.
4. The capacitor for a microwave oven as claimed in claim 1, wherein: an epoxy resin layer is poured into the opening of the metal shell, and the plastic outer sleeve and the capacitor core are encapsulated in the metal shell through the epoxy resin layer; the plastic outer sleeve comprises an upper fixing sleeve and a lower fixing sleeve, an upper sleeve cavity is formed in the bottom of the upper fixing sleeve, the upper portion of the capacitor core is inserted into the upper sleeve cavity, a lower sleeve cavity is formed in the top of the lower fixing sleeve, the lower portion of the capacitor core is inserted into the lower sleeve cavity, and the bottom surface of the upper fixing sleeve is in concave-convex insertion fit with the top surface of the lower fixing sleeve; the upper fixing sleeve or the lower fixing sleeve and the capacitor core are integrally formed by injection molding.
5. The capacitor for a microwave oven as claimed in claim 1, wherein: the plastic outer sleeve is an integral body and is integrally injection-molded with the capacitor core and the leading-out electrode; the plastic outer sleeve is injected and molded in the metal shell, or the plastic outer sleeve, the capacitor core and the leading-out electrode are placed in the metal shell after injection molding, an epoxy resin layer is poured in an opening of the metal shell, and the plastic outer sleeve and the capacitor core are packaged in the metal shell through the epoxy resin layer.
6. The capacitor for a microwave oven as claimed in claim 1, wherein: the extraction electrode comprises an insert electrode, and a sheath is arranged on the top surface of the plastic outer sleeve corresponding to the periphery of the insert electrode.
7. The capacitor for a microwave oven as claimed in claim 6, wherein: the capacitor cores comprise two capacitor cores which are connected in series, a discharge resistor is connected in parallel between the two capacitor cores after being connected in series, and the discharge resistor and the upper fixed sleeve are integrally molded by injection;
the lead-out electrode also comprises a lead electrode, one end of the lead electrode is electrically connected with one end of the two capacitor cores which are connected in series, the other end of the lead electrode extends out of the top of the upper fixed sleeve, one group of the insert electrodes is arranged, and the insert electrodes are electrically connected with the other ends of the two capacitor cores which are connected in series; or, the two groups of the inserting sheet electrodes are respectively and electrically connected with one ends of the two capacitor cores which are connected in series.
8. The capacitor for a microwave oven as claimed in claim 7, wherein: the diode is provided with two pins, one pin is electrically connected with any end of the two capacitor cores which are connected in series, and the other pin extends out of the metal shell or is in contact with the metal shell.
9. The capacitor for a microwave oven as claimed in claim 1, wherein: and an insulating layer is arranged on the inner wall of the metal shell.
10. The capacitor for a microwave oven as claimed in claim 1, wherein: the metal shell is composed of a bottom plate and a surrounding plate, the bottom plate is in a waist-round shape, the lower end of the surrounding plate is connected with the periphery of the bottom plate into a whole, and the upper end of the surrounding plate is a straight edge or is provided with an external curled edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487786.9U CN210378767U (en) | 2019-09-06 | 2019-09-06 | Capacitor for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487786.9U CN210378767U (en) | 2019-09-06 | 2019-09-06 | Capacitor for microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210378767U true CN210378767U (en) | 2020-04-21 |
Family
ID=70254447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921487786.9U Expired - Fee Related CN210378767U (en) | 2019-09-06 | 2019-09-06 | Capacitor for microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210378767U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114724860A (en) * | 2021-01-06 | 2022-07-08 | 丰宾电子（深圳）有限公司 | Integrated capacitor |
-
2019
- 2019-09-06 CN CN201921487786.9U patent/CN210378767U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114724860A (en) * | 2021-01-06 | 2022-07-08 | 丰宾电子（深圳）有限公司 | Integrated capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |