CN202275720U - Loosening-prevention riveting structure of aluminum electrolytic capacitor - Google Patents
Loosening-prevention riveting structure of aluminum electrolytic capacitor Download PDFInfo
- Publication number
- CN202275720U CN202275720U CN2011203121635U CN201120312163U CN202275720U CN 202275720 U CN202275720 U CN 202275720U CN 2011203121635 U CN2011203121635 U CN 2011203121635U CN 201120312163 U CN201120312163 U CN 201120312163U CN 202275720 U CN202275720 U CN 202275720U
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- leading
- hole
- rivet
- riveted
- lead
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Abstract
The utility model discloses a loosening-prevention riveting structure of an aluminum electrolytic capacitor. A leading-out bar is riveted on a leading-out rivet fixed on a sealing cover plate, an installation through hole on the end of the leading-out bar is riveted on the leading-out rivet by a gasket, the rivet head of the leading-out rivet before riveting and deforming, passes through the installation through hole on the end of the leading-out bar to be riveted with the inner hole of the gasket, characterized in that: the through hole of the leading-out bar is a through hole with a loosening-prevention structure, the loosening-prevention structure is formed by arranging at least three petal shaped flanged edges on the hole wall of the through hole, the petal shaped flanged edges extend outwards through the inner hole of the gasket and project on the outer surface of the gasket and are extruded and compacted by the rivet head of the leading-out rivet after riveting and deforming. An axial pressure and a radial pressure are formed among the leading-out bar, the leading-out rivet and the gasket, so as to ensure the stable and reliable riveting, effectively prevent the contact surface between the leading-out bar and the leading-out rivet from loosening to generate the clearance, avoid failure of the capacitor due to increased leading-out resistance and obviously increase the reliability of the aluminum electrolytic capacitor.
Description
Technical field
The utility model relates to capacitor, particularly relates to the loosening riveted structure of ending of a kind of aluminium electrolytic capacitor.
Background technology
When existing aluminium electrolytic capacitor is assembled; The installation through holes that the lead that connects anode foils, Cathode Foil respectively is terminal is riveted on through packing ring and is fixed in the drawing on the rivet of seal cover board; Said packing ring is arranged on said lead and said and draws between the die of rivet; Be that the said preceding die of riveted joint deformation of drawing rivet passes terminal installation through holes of said lead and the riveted joint of said packing ring endoporus successively, the internal diameter of the through hole of said lead is slightly larger than said external diameter of drawing rivet bar.The lead of this fixedly riveted structure only receives the axial compressive force of drawing Rivets & Washers; And lead and the contact-making surface of drawing rivet have only two surfaces of lead; Work long hours the back rivet shaft to pressure deficiency can appear; Cause the loosening gap that produces of lead and the contact-making surface of drawing rivet, electrolyte infiltrates the gap can make the lead surface form oxide-film, increases and draws resistance.Especially the lead logarithm of large-scale aluminum electrolysis capacitor is more, rivets axial insufficient pressure to compress the gap of all leads, and it is excessive that the aluminium electrolytic capacitor after the assembling is drawn resistance, possibly cause capacitor to lose efficacy.
Summary of the invention
The utility model technical problem to be solved is the defective that remedies above-mentioned prior art, provides ending of a kind of aluminium electrolytic capacitor loosening riveted structure.
The technical problem of the utility model solves through following technical scheme.
Riveted structure is become flexible in ending of this aluminium electrolytic capacitor; The installation through holes that the lead that connects anode foils, Cathode Foil respectively is terminal is riveted on through packing ring and is fixed in the drawing on the rivet of seal cover board; The through hole internal diameter of said lead is slightly larger than saidly draws the bar external diameter of rivet and is slightly less than said packing ring internal diameter; Promptly between said bar external diameter and said packing ring internal diameter of drawing rivet; Said packing ring is arranged on said lead and said and draws between the die of rivet, and the die before the promptly said riveted joint deformation of drawing rivet passes terminal installation through holes of said lead and the riveted joint of said packing ring endoporus successively.
The characteristics of ending loosening riveted structure of this aluminium electrolytic capacitor are:
The through hole of said lead is to be provided with the through hole that ends loosening structure.
The only loosening structure of said lead through hole is the petal-shaped flange that is provided with at least three lobes at the hole wall of said through hole; Said petal-shaped flange passes said packing ring endoporus and stretches laterally and give prominence in said bead outer surface, and is closely knit by the die extruding of drawing rivet after the riveted joint deformation.Said lead not only receives the axial compressive force of drawing Rivets & Washers; And the petal-shaped flange through the lead through hole receives and draws the radial pressure that the Rivets & Washers extruding forms; Be enough to guarantee that riveted joint is reliable and stable; Effective loosening and generation gap of lead and the contact-making surface of drawing rivet that stops is avoided increase to draw resistance and is caused capacitor to lose efficacy, and obviously improves the reliability of aluminium electrolytic capacitor.
The technical problem of the utility model solves through following further technical scheme.
Preferably, the said petal-shaped flange petal-shaped flange that is pintongs.
Said riveted joint is to adopt press forging to be riveted.
The beneficial effect of the utility model and prior art contrast is:
The only loosening riveted structure of the utility model is at lead and draw formation axial compressive force and radial pressure between the Rivets & Washers; Be enough to guarantee that riveted joint is reliable and stable; Effectively stop lead and the contact-making surface of drawing rivet to become flexible and the generation gap; Avoid increase to draw resistance and cause capacitor to lose efficacy, obviously improve the reliability of aluminium electrolytic capacitor.
Description of drawings
Fig. 1 is the disintegration structural representation of the utility model embodiment;
Fig. 2 is the loosening riveted structure profile of ending of Fig. 1.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described.
A kind of like the loosening riveted structure of ending of Fig. 1, the aluminium electrolytic capacitor shown in 2; The installation through holes that the lead that connects anode foils, Cathode Foil respectively 2 is terminal is riveted on through packing ring 1 and is fixed in the drawing on the rivet 3 of seal cover board 4; The through hole internal diameter of lead 1 is slightly larger than the bar external diameter of drawing rivet 3 and is slightly less than packing ring 2 internal diameters; Packing ring 1 is arranged on lead 2 and draws between the die of rivet 3, and the preceding die of riveted joint deformation of promptly drawing rivet 3 passes lead 2 terminal installation through holes and packing ring 1 endoporus successively and rivets.
The through hole of lead 2 is to be provided with the through hole that ends loosening structure.The hole wall that ends loosening structure and be at through hole is provided with quatrefoil flap flange, and the petal-shaped flange passes packing ring 1 endoporus and stretches laterally and give prominence at packing ring 1 outer surface, and is closely knit by the die extruding of drawing rivet 3 of adopting press forging to be riveted after the deformation.Lead 2 not only receives the axial compressive force of drawing rivet 3 and packing ring 1; And the petal-shaped flange through lead 2 through holes receives and draws rivet 3 radial pressure that 1 extruding forms with packing ring; Be enough to guarantee that riveted joint is reliable and stable; Effective loosening and generation gap of lead 2 and the contact-making surface of drawing rivet 3 that stops is avoided increase to draw resistance and is caused capacitor to lose efficacy, and obviously improves the reliability of aluminium electrolytic capacitor.
Above content is the further explain that combines concrete preferred implementation that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.Those of ordinary skill for technical field under the utility model; Under the prerequisite that does not break away from the utility model design, make some alternative or obvious modification that are equal to; And performance or purposes are identical, all should be regarded as belonging to the scope of patent protection that the utility model is confirmed by claims of being submitted to.
Claims (3)
1. ending of an aluminium electrolytic capacitor become flexible riveted structure; The installation through holes that the lead that connects anode foils, Cathode Foil respectively is terminal is riveted on through packing ring and is fixed in the drawing on the rivet of seal cover board; The through hole internal diameter of said lead is between said bar external diameter and said packing ring internal diameter of drawing rivet; Said packing ring is arranged on said lead and said and draws between the die of rivet; Be that the said preceding die of riveted joint deformation of drawing rivet passes terminal installation through holes of said lead and the riveted joint of said packing ring endoporus successively, it is characterized in that:
The through hole of said lead is to be provided with the through hole that ends loosening structure;
The only loosening structure of said lead through hole is the petal-shaped flange that is provided with at least three lobes at the hole wall of said through hole; Said petal-shaped flange passes said packing ring endoporus and stretches laterally and give prominence in said bead outer surface, and is closely knit by the die extruding of drawing rivet after the riveted joint deformation.
2. ending of aluminium electrolytic capacitor as claimed in claim 1 become flexible riveted structure, it is characterized in that:
The petal-shaped flange that said petal-shaped flange is a pintongs.
According to claim 1 or claim 2 aluminium electrolytic capacitor end loosening riveted structure, it is characterized in that:
Said riveted joint is to adopt press forging to be riveted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203121635U CN202275720U (en) | 2011-08-25 | 2011-08-25 | Loosening-prevention riveting structure of aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203121635U CN202275720U (en) | 2011-08-25 | 2011-08-25 | Loosening-prevention riveting structure of aluminum electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275720U true CN202275720U (en) | 2012-06-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203121635U Expired - Fee Related CN202275720U (en) | 2011-08-25 | 2011-08-25 | Loosening-prevention riveting structure of aluminum electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202275720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680812A (en) * | 2017-11-09 | 2018-02-09 | 益阳市万京源电子有限公司 | A kind of small size solid-state aluminum electrolytic capacitor nail volume structure |
| CN111937108A (en) * | 2018-04-06 | 2020-11-13 | Tdk电子股份有限公司 | Electrolytic capacitor with improved connection |
-
2011
- 2011-08-25 CN CN2011203121635U patent/CN202275720U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680812A (en) * | 2017-11-09 | 2018-02-09 | 益阳市万京源电子有限公司 | A kind of small size solid-state aluminum electrolytic capacitor nail volume structure |
| CN111937108A (en) * | 2018-04-06 | 2020-11-13 | Tdk电子股份有限公司 | Electrolytic capacitor with improved connection |
| US11456119B2 (en) | 2018-04-06 | 2022-09-27 | Tdk Electronics Ag | Electrolytic capacitor with improved connection part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20170825 |