CN209912745U - Welding pin type aluminum electrolytic capacitor with enhanced air tightness - Google Patents
Welding pin type aluminum electrolytic capacitor with enhanced air tightness Download PDFInfo
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- CN209912745U CN209912745U CN201920902380.6U CN201920902380U CN209912745U CN 209912745 U CN209912745 U CN 209912745U CN 201920902380 U CN201920902380 U CN 201920902380U CN 209912745 U CN209912745 U CN 209912745U
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- cover plate
- electrolytic capacitor
- aluminum shell
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Abstract
The utility model relates to a welding pin type aluminum electrolytic capacitor of gas tightness reinforcing solves the not good problem of current aluminum electrolytic capacitor leakproofness. Comprises an aluminum shell, a core arranged in the aluminum shell, a cover plate covering the aluminum shell, and a thermoplastic rubber tube sleeved outside the aluminum shell and the cover plate; the aluminum shell below the cover plate is packaged with the waist of the cover plate, and the sharp corner of the aluminum shell is bent and inserted into the butyl rubber layer. The utility model discloses a bonding has the butyl rubber layer on the apron of the welding needle type aluminium electrolytic capacitor of gas tightness reinforcing, and the top of aluminum hull is equipped with the closed angle structure, and the aluminum hull is restrainted the waist with the apron and is encapsulated the back, and the closed angle of aluminum hull is buckled and is inserted in the butyl rubber in situ to the leakproofness of aluminum hull and apron is good, prevents the vaporization of electrolyte and dissipates.
Description
Technical Field
The utility model relates to an electron device field especially relates to a welding pin type aluminum electrolytic capacitor of gas tightness reinforcing.
Background
The existing aluminum electrolytic capacitor cover plate mainly comprises a bakelite cover and ethylene propylene diene monomer, wherein the bakelite cover plays a supporting role, and the ethylene propylene diene monomer on the upper layer of the bakelite cover mainly plays a sealing role; the ethylene propylene diene monomer rubber has poor stability, is easy to age and harden at high temperature, and has reduced air tightness. The electrolyte of the common aluminum electrolytic capacitor using the cover plate is gradually vaporized and dissipated in the service life, so that the capacity is attenuated and even the aluminum electrolytic capacitor fails.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the existing aluminum electrolytic capacitor has poor sealing performance.
For solving the utility model provides a technical scheme that technical problem adopted does: the utility model discloses a welding pin type aluminum electrolytic capacitor with enhanced air tightness, which comprises an aluminum shell, a core arranged in the aluminum shell, a cover plate covered on the aluminum shell, and a thermoplastic rubber tube sleeved outside the aluminum shell and the cover plate; the aluminum shell below the cover plate is packaged with the waist of the cover plate, and the sharp corner of the aluminum shell is bent and inserted into the butyl rubber layer.
Right the utility model discloses do further limited technical scheme and include:
the cover plate and the butyl rubber layer are bonded through a strong adhesive mainly comprising alpha-cyanoacrylate.
The core is formed by winding positive foil, negative foil, electrolytic paper, electronic adhesive tape and aluminum guide strip.
Through the technical scheme, the beneficial effects of the utility model are that: the utility model discloses a bonding has the butyl rubber layer on the apron of the welding needle type aluminium electrolytic capacitor of gas tightness reinforcing, and the top of aluminum hull is equipped with the closed angle structure, and the aluminum hull is restrainted the waist with the apron and is encapsulated the back, and the closed angle of aluminum hull is buckled and is inserted in the butyl rubber in situ to the leakproofness of aluminum hull and apron is good, prevents the vaporization of electrolyte and dissipates.
Drawings
FIG. 1 is a schematic view of a sectional structure of a pin-welded aluminum electrolytic capacitor with enhanced gas tightness according to the present invention.
Fig. 2 is a schematic structural diagram of the aluminum case of the pin-welded aluminum electrolytic capacitor with enhanced air tightness and the aluminum case before the cover plate is packaged.
Detailed Description
The structure of the present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 and 2, a welding pin type aluminum electrolytic capacitor with enhanced gas tightness comprises an aluminum case 1, a core 2 arranged in the aluminum case, a cover plate 3 covering the aluminum case, and a thermoplastic rubber tube 4 sleeved outside the aluminum case and the cover plate; in this example, the core was made by winding a positive foil, a negative foil, electrolytic paper, an electronic tape, and an aluminum lead strip. A butyl rubber layer 5 is bonded on the cover plate 3, a sharp-angled structure 11 is arranged at the top end of the aluminum shell 1, and after the aluminum shell 12 below the cover plate and the waist of the cover plate are packaged, the sharp-angled bend of the aluminum shell is easily inserted into the butyl rubber layer. The butyl rubber has good chemical stability and thermal stability, and most prominently has good air tightness and water tightness, so that the aluminum shell and the cover plate have good tightness, and the evaporation and the dissipation of the electrolyte are prevented. In this example, the cover plate and the butyl rubber layer were bonded to each other with a strong adhesive mainly composed of ethyl α -cyanoacrylate. Thereby preventing the cover plate and the butyl rubber layer from falling off.
While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be understood as limited by the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive work within the scope of the present invention as described in the claims.
Claims (3)
1. A welding pin type aluminum electrolytic capacitor with enhanced air tightness comprises an aluminum shell, a core arranged in the aluminum shell, a cover plate covering the aluminum shell, and a thermoplastic rubber tube sleeved outside the aluminum shell and the cover plate; the method is characterized in that: the aluminum shell below the cover plate is packaged with the waist of the cover plate, and the sharp corner of the aluminum shell is bent and inserted into the butyl rubber layer.
2. The welded pin type aluminum electrolytic capacitor with enhanced gas tightness as claimed in claim 1, wherein: the cover plate and the butyl rubber layer are bonded through a strong adhesive mainly comprising alpha-cyanoacrylate.
3. The welded pin type aluminum electrolytic capacitor with enhanced gas tightness as claimed in claim 1, wherein: the core is formed by winding positive foil, negative foil, electrolytic paper, electronic adhesive tape and aluminum guide strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920902380.6U CN209912745U (en) | 2019-06-17 | 2019-06-17 | Welding pin type aluminum electrolytic capacitor with enhanced air tightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920902380.6U CN209912745U (en) | 2019-06-17 | 2019-06-17 | Welding pin type aluminum electrolytic capacitor with enhanced air tightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209912745U true CN209912745U (en) | 2020-01-07 |
Family
ID=69050070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920902380.6U Active CN209912745U (en) | 2019-06-17 | 2019-06-17 | Welding pin type aluminum electrolytic capacitor with enhanced air tightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209912745U (en) |
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2019
- 2019-06-17 CN CN201920902380.6U patent/CN209912745U/en active Active
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Legal Events
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| CP01 | Change in the name or title of a patent holder |
Address after: No.302, 3rd floor, No.32, Xinhe Road, shangmugu community, Pinghu street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen xinzhongyuan Electronic Co., Ltd Address before: No.302, 3rd floor, No.32, Xinhe Road, shangmugu community, Pinghu street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN ZHONGYUAN JIKANG ELECTRONIC Co.,Ltd. |