CN210668103U - Capacitor with a capacitor element - Google Patents
Capacitor with a capacitor element Download PDFInfo
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- CN210668103U CN210668103U CN201920964413.XU CN201920964413U CN210668103U CN 210668103 U CN210668103 U CN 210668103U CN 201920964413 U CN201920964413 U CN 201920964413U CN 210668103 U CN210668103 U CN 210668103U
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- capacitor
- insulating
- outer cover
- metal outer
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Abstract
The utility model relates to a capacitor, which comprises a metal outer cover and a capacitor core, wherein the metal outer cover is provided with an inner cavity, one side of the inner cavity is provided with an opening, the inner wall of the inner cavity is provided with an insulating film, the capacitor core is put into the inner cavity through the opening, the opening of the metal outer cover is provided with an insulating cover, the periphery of the insulating cover is provided with an anti-creepage surrounding edge with a certain height, and the anti-creepage surrounding edge extends to the periphery of the metal outer cover; the capacitor core is provided with pins which extend out of the insulating cover, and an insulating heat-conducting filling layer is arranged between the capacitor core and the inner cavity wall. The opening of the metal outer cover of the structure is covered by the insulating cover, so that the mounting end face of the capacitor is not conductive; moreover, the creepage preventing surrounding edge is arranged, so that the distance from the metal outer cover to the metal outer cover is increased, namely, the creepage distance is longer and is safer.
Description
Technical Field
The utility model relates to a capacitor.
Background
Chinese patent No. CN201820847886.7 discloses in 2018, 12.4.2018, a special film capacitor for a fire-proof safety electromagnetic oven, which comprises a film capacitor mounted on a circuit board, wherein a housing is arranged outside the film capacitor, the housing is a metal body, an insulating layer is arranged on the inner wall of the metal body, an opening is arranged on the housing, a flange is bent on the opening, and the insulating layer extends to the flange. The thickness of the insulating layer in the structure is less than or equal to 0.1mm, and when the insulating layer and the metal body shell are bent and flanged together, the insulating layer is broken, the metal body shell is exposed, and a circuit short circuit is easily caused.
Disclosure of Invention
An object of the utility model is to provide a rational in infrastructure, safe and reliable's condenser.
The purpose of the utility model is realized like this:
the utility model provides a capacitor, includes metal dustcoat and electric capacity core, and the metal dustcoat is equipped with the inner chamber, and inner chamber one side is equipped with the opening, and inner chamber inner wall is equipped with the insulating film, and electric capacity core is put into the inner chamber through the opening, its characterized in that: an insulating cover is arranged on the opening of the metal outer cover, an anti-creeping surrounding edge with a certain height is arranged on the periphery of the insulating cover, and the anti-creeping surrounding edge extends to the periphery of the metal outer cover; the capacitor core is provided with pins which extend out of the insulating cover, and an insulating heat-conducting filling layer is arranged between the capacitor core and the inner cavity wall. The opening of the metal outer cover of the structure is covered by the insulating cover, so that the mounting end face of the capacitor is not conductive; moreover, the creepage preventing surrounding edge is arranged, so that the distance from the metal outer cover to the metal outer cover is increased, namely, the creepage distance is longer and is safer.
The purpose of the utility model can also adopt the following technical measures to solve:
more specifically, the insulating and heat-conducting filling layer is an epoxy resin layer.
As a further scheme, the insulating and heat-conducting filling layer is a modified resin injection layer, and the modified resin injection layer is formed by mixing and injecting at least a resin material and microcrystalline paraffin. The modified resin injection layer belongs to a low-temperature melting material, and the curing time is short (the modified resin can be cured by properly cooling), so that the injection molding processing can be realized, the processing time is short, and in addition, the injection molding processing under certain pressure avoids forming air gaps so as to avoid influencing the insulating property of the modified resin injection layer.
As a further alternative, the pins protrude through the top surface of the insulating cover. The capacitor in this manner can be plugged onto a circuit board.
According to a further scheme, the pins are sheet-shaped, grooves are formed in the edges of the top surface of the insulating cover corresponding to the pins, the pins are bent towards the direction of the grooves, and the pins extend to the periphery of the insulating cover through the grooves. Through the design, the capacitor forms a patch type structure and can be fixed on a circuit board through reflow soldering.
The utility model has the advantages as follows:
(1) the opening of the metal outer cover of the capacitor is covered by the insulating cover, so that the mounting end face of the capacitor is not conductive; moreover, the creepage preventing surrounding edge is arranged, so that the distance from the metal outer cover to the metal outer cover is increased, namely, the creepage distance is longer and is safer.
(2) The capacitor is mainly applied to the fields of electric power, electronics, household appliances and the like, can be arranged on a PCB (printed circuit board) and a metal circuit board, cannot cause short circuit even if an insulating cover of the capacitor is in contact with a circuit, and is safe and reliable to use.
(3) The metal outer cover of the capacitor has certain explosion-proof capacity.
(4) The shell-free capacitor can be used as a resonance capacitor, an absorption capacitor, a direct current support capacitor and an alternating current filter capacitor in power electronic equipment; high and low voltage compensation capacitors and filter capacitors are used in the power equipment; the capacitor is used as a capacitor for resonance, absorption and anti-conduction interference in household appliances and PCB boards, and an AC motor is used for starting and operating.
Drawings
Fig. 1 is a schematic top view of an embodiment of the present invention.
3 FIG. 3 2 3 is 3 a 3 schematic 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3. 3
Fig. 3 is a schematic top view of another embodiment of the present invention.
FIG. 4 is a schematic sectional view of the structure of FIG. 3B-B.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
In a first embodiment, referring to fig. 1 and fig. 2, a capacitor comprises a metal outer cover 5 and a capacitor core 3, wherein the metal outer cover 5 is provided with an inner cavity, one side of the inner cavity is provided with an opening, the inner wall of the inner cavity is provided with an insulating film 51, the capacitor core 3 is placed into the inner cavity through the opening, an insulating cover 1 is arranged on the opening of the metal outer cover 5, the periphery of the insulating cover 1 is provided with an anti-creeping surrounding edge 11 with a certain height, and the anti-creeping surrounding edge 11 extends to the periphery of the metal outer cover 5; the capacitor core 3 is provided with pins 2, the pins 2 extend out of the insulating cover 1, and an insulating heat-conducting filling layer 4 is arranged between the capacitor core 3 and the inner cavity wall.
The insulating heat-conducting filling layer 4 is an epoxy resin layer or a modified resin injection layer, and the modified resin injection layer is formed by mixing and injecting at least a resin material and microcrystalline paraffin. The resin material is polybutylene resin and/or polypropylene resin, and the content of microcrystalline paraffin is below 30%. Because the temperature resistance degree of the capacitor core is low, the melting point of the modified resin injection layer is controlled below the temperature which can be received by the capacitor core by selecting the resin material and combining with the microcrystalline paraffin with a certain proportion, so that the capacitor core is prevented from being damaged in the injection molding process.
The pins 2 protrude through the top surface of the insulating cover 1. The pin 2 is needle-shaped.
The insulating cover 1 is a plastic cover, and the metal outer cover 5 is an aluminum outer cover or a copper outer cover.
The second embodiment is different from the first embodiment in that: referring to fig. 3 and 4, the pin 2 is sheet-shaped, a groove 12 is formed in the edge of the top surface of the insulating cover 1 corresponding to the pin 2, the pin 2 is bent towards the groove 12, and the pin 2 extends to the periphery of the insulating cover 1 through the groove 12.
Claims (4)
1. The utility model provides a capacitor, includes metal dustcoat and electric capacity core, and the metal dustcoat is equipped with the inner chamber, and inner chamber one side is equipped with the opening, and inner chamber inner wall is equipped with the insulating film, and electric capacity core is put into the inner chamber through the opening, its characterized in that: an insulating cover is arranged on the opening of the metal outer cover, an anti-creeping surrounding edge with a certain height is arranged on the periphery of the insulating cover, and the anti-creeping surrounding edge extends to the periphery of the metal outer cover; the capacitor core is provided with pins which extend out of the insulating cover, and an insulating heat-conducting filling layer is arranged between the capacitor core and the inner cavity wall.
2. The capacitor of claim 1, wherein: the insulating heat-conducting filling layer is an epoxy resin layer.
3. The capacitor of claim 1, wherein: the pins extend through the top surface of the insulating cover.
4. A capacitor according to claim 3, wherein: the pins are in a sheet shape, grooves are formed in the edges of the top surface of the insulating cover corresponding to the pins, the pins are bent towards the direction of the grooves, and the pins extend to the periphery of the insulating cover through the grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964413.XU CN210668103U (en) | 2019-06-25 | 2019-06-25 | Capacitor with a capacitor element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964413.XU CN210668103U (en) | 2019-06-25 | 2019-06-25 | Capacitor with a capacitor element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210668103U true CN210668103U (en) | 2020-06-02 |
Family
ID=70820119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920964413.XU Active CN210668103U (en) | 2019-06-25 | 2019-06-25 | Capacitor with a capacitor element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210668103U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394019A (en) * | 2021-07-13 | 2021-09-14 | 广东丰明电子科技有限公司 | Metal square-shell capacitor with embedded insulating support |
-
2019
- 2019-06-25 CN CN201920964413.XU patent/CN210668103U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113394019A (en) * | 2021-07-13 | 2021-09-14 | 广东丰明电子科技有限公司 | Metal square-shell capacitor with embedded insulating support |
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