CN212411843U - Aluminum electrolytic capacitor with novel surface-mounted lead structure - Google Patents
Aluminum electrolytic capacitor with novel surface-mounted lead structure Download PDFInfo
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- CN212411843U CN212411843U CN202020877358.3U CN202020877358U CN212411843U CN 212411843 U CN212411843 U CN 212411843U CN 202020877358 U CN202020877358 U CN 202020877358U CN 212411843 U CN212411843 U CN 212411843U
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Abstract
An aluminum electrolytic capacitor with a novel surface-mounted lead structure comprises an aluminum shell, a core package and a rubber plug, wherein the core package is arranged in the aluminum shell in a sealing mode through the rubber plug, the core package comprises anode foil, electrolytic paper and cathode foil, and the anode foil, the electrolytic paper and the cathode foil are wound to form the core package; the anode foil and the cathode foil are respectively connected with an anode guide pin and a cathode guide pin, and the anode guide pin and the cathode guide pin extend out of the rubber plug; the anode guide pin and the cathode guide pin both comprise a connecting portion and an external connecting portion, the connecting portion and the external connecting portion are L-shaped, the external connecting portion is provided with a protrusion, the height of the protrusion is larger than or equal to 1mm, and the horizontal distance between the protrusion and the aluminum shell is larger than or equal to 1 mm. The utility model discloses in bellied setting make install on aluminium base board paster aluminum electrolytic capacitor's positive pole guide pin and negative pole guide pin and aluminium base board on the edge of through-hole have sufficient electric clearance and creepage distance. Meanwhile, after the aluminum electrolytic capacitor is installed on the aluminum substrate, a sufficient electrical distance and creepage distance are kept between the edge of the through hole in the aluminum substrate and the aluminum shell.
Description
Technical Field
The utility model relates to an aluminum electrolytic capacitor especially relates to an aluminum electrolytic capacitor who has novel subsides dress lead structure after welding on aluminium base board.
Background
Currently in some lighting devices, such as LEDs; in order to reduce the volume of equipment and the convenience of production, the capacitor is directly connected to a substrate of a luminous bead, and all elements can be welded directly by one-time reflow soldering; the substrate is generally made of an aluminum substrate, and the middle layer of the aluminum substrate is made of aluminum, so that the capacitor cannot be connected to the reverse sides of the aluminum substrate and the LED lamp beads like a common circuit board, and the aluminum substrate is not easy to be used as a through hole of the common circuit board. If the capacitors are connected to the same surface, the capacitors inevitably block light emitted from the light-emitting beads to form black spots. At present, a large through hole is formed in an aluminum substrate, a lead terminal of an aluminum electrolytic capacitor penetrates through the through hole to be inserted into a wiring terminal of a lamp bead surface, however, in the process of actual use, the cost of the terminal and the cost of later-stage manual plug-in components can be found to be increased, the aluminum electrolytic capacitor can be directly placed on the circuit board through a chip mounter, and all components are welded through one-time reflow soldering.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a novel subsides dress pin configuration's that has enough electrical clearance and creepage distance after installing on aluminium base board aluminum electrolytic capacitor.
In order to solve the technical problem, the utility model provides a technical scheme does: an aluminum electrolytic capacitor with a novel surface-mounted lead structure comprises an aluminum shell, a core package and a rubber plug, wherein the core package is arranged in the aluminum shell in a sealing mode through the rubber plug, the core package comprises anode foil, electrolytic paper and cathode foil, and the anode foil, the electrolytic paper and the cathode foil are wound to form the core package; the anode foil and the cathode foil are respectively connected with an anode guide pin and a cathode guide pin, and the anode guide pin and the cathode guide pin extend out of the rubber plug; the positive pole guide pin all includes connecting portion and external portion with the negative pole guide pin, connecting portion are L shape setting with external portion, be provided with the arch in the external portion, bellied highly be greater than or equal to 1mm, bellied intermediate distance aluminium shell's horizontal distance is greater than or equal to 1 mm.
Preferably, the distance between the external part and the shell of the aluminum electrolytic capacitor is greater than or equal to 1 mm.
In the above aluminum electrolytic capacitor with the novel mounting lead structure, preferably, the protrusion is disposed at a joint portion between the connecting portion and the external connection portion, and a horizontal distance from the middle of the protrusion to the aluminum case is greater than or equal to 1 mm; the height of the protrusion is greater than or equal to 1 mm.
Preferably, the protrusion is U-shaped, V-shaped or arc-shaped.
Preferably, the connection part of the external connection part and the aluminum substrate is flattened or is directly flat.
Preferably, the distance between the flattened part of the external connection part and the bulge is greater than or equal to 1 mm.
Compared with the prior art, the utility model has the advantages of: the utility model discloses well bellied setting makes the edge of installing the aluminium electrolytic capacitor's on aluminium base board positive pole guide pin and negative pole guide pin and aluminium base board upper through-hole have sufficient electric clearance and creepage distance. Meanwhile, after the aluminum electrolytic capacitor is installed on the aluminum substrate, a sufficient electrical gap and creepage distance are kept between the edge of the through hole on the aluminum substrate and the aluminum shell.
Drawings
Fig. 1 is a schematic structural diagram of an aluminum electrolytic capacitor having a novel mounting lead structure in example 1.
Fig. 2 is a schematic structural diagram of an aluminum electrolytic capacitor having a novel mounting lead structure in example 2.
Fig. 3 is a schematic structural diagram of an aluminum electrolytic capacitor with a novel mounting lead structure in example 3.
Description of the figures
1. An aluminum shell; 2. a connecting portion; 3. an external connection part; 4. a protrusion; 5. an aluminum substrate.
Detailed Description
To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
It should be particularly noted that when an element is referred to as being "fixed to, connected to or communicated with" another element, it can be directly fixed to, connected to or communicated with the other element or indirectly fixed to, connected to or communicated with the other element through other intermediate connecting components.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1, the aluminum electrolytic capacitor with the novel surface-mount lead structure comprises an aluminum case 1, a core package and a rubber plug, wherein the core package is hermetically arranged in the aluminum case 1 through the rubber plug, the core package comprises anode foil, electrolytic paper and cathode foil, and the anode foil, the electrolytic paper and the cathode foil are wound to form the core package; the anode foil and the cathode foil are respectively connected with an anode guide pin and a cathode guide pin, and the anode guide pin and the cathode guide pin extend out of the rubber plug; the positive pole guide pin and negative pole guide pin all include connecting portion 2 and external portion 3, and connecting portion 2 is L shape setting with external portion 3. The connecting part 2 of the anode guide pin is riveted on the anode foil, and the connecting part 2 of the cathode guide pin is riveted on the cathode foil. Be provided with arch 4 on the external portion 3, arch 4's height is more than or equal to 1mm, and arch 4's middle horizontal distance apart from 1 of aluminium shell is more than or equal to 1 mm. The distance between the external connecting part 3 and the shell of the aluminum electrolytic capacitor is more than or equal to 1 mm. After the aluminum base plate is installed on the aluminum base plate, the distance between the edge of the through hole on the aluminum base plate and the aluminum shell and the distance between the edge of the through hole on the aluminum base plate and the external connection part are both larger than or equal to 1 mm.
In the present embodiment, the welding portion between the external connection portion 3 and the aluminum substrate 5 is flattened. The horizontal distance between the flattened part of the external connecting part 3 and the middle of the bulge 4 is more than or equal to 1 mm. In general, the soldering portion between the external portion 3 and the aluminum substrate 5 is far from the bump 4, so that the soldering portion and the edge of the through hole in the aluminum substrate 5 will not generate creepage. The welding part is flattened, so that the welding area between the external connecting part 3 and the aluminum substrate 5 is increased, the welding is easier, and the welding is firmer.
In this embodiment, the aluminum substrate 5 is provided with a through hole for mounting an aluminum electrolytic capacitor, the lead terminal of the aluminum electrolytic capacitor is passed through the through hole, and the anode guide pin and the cathode guide pin are mounted on the surface of the aluminum substrate 5 where the circuit is provided. The main body of the aluminum electrolytic capacitor is directly suspended in the through hole on the aluminum substrate 5.
In this embodiment, after the aluminum electrolytic capacitor is welded on the aluminum substrate 5, the edge of the through hole on the aluminum substrate 5 is located below the protrusion 4, and the distance from the edge of the through hole on the aluminum substrate 5 to the external connection part 3 is greater than or equal to 1 mm. Meanwhile, the distance between the edge of the through hole on the aluminum substrate 5 and the aluminum shell 1 is greater than or equal to 1 mm. In this embodiment, by the arrangement of the protrusion 4, after the aluminum substrate 5 is mounted, the edge of the through hole for mounting the aluminum electrolytic capacitor on the aluminum substrate 5 and the external connection part 3 of the anode guide pin and the cathode guide pin keep a sufficient creepage distance, so that the creepage phenomenon does not occur. Meanwhile, the distance between the edge of the through hole for installing the aluminum electrolytic capacitor on the aluminum substrate 5 and the aluminum shell 1 is ensured, so that the creepage distance between the aluminum substrate 5 and the aluminum shell 1 cannot occur
The utility model discloses well protruding 4 setting makes the edge of installing the aluminium electrolytic capacitor's on aluminium base board 5 positive pole guide pin and negative pole guide pin and aluminium base board 5 on through-hole have sufficient electric clearance and creepage distance. Meanwhile, after the aluminum electrolytic capacitor is mounted on the aluminum substrate 5, a sufficient electrical gap and creepage distance are also kept between the edge of the through hole on the aluminum substrate 5 and the aluminum case 1.
Example 2
As shown in fig. 2, in the present embodiment, the protrusion 4 is provided at the joint portion between the connection portion 2 and the external connection portion 3, and the horizontal distance from the middle of the protrusion 4 to the aluminum case 1 is greater than or equal to 1 mm; the height of the projections 4 is greater than or equal to 1 mm. As shown in fig. 2, the projection 4 is U-shaped.
The rest of the present embodiment is the same as embodiment 1.
Example 3
As shown in fig. 3, in the present embodiment, the protrusion 4 is disposed in an arc shape. The other parts of this example are the same as example 2.
Claims (6)
1. An aluminum electrolytic capacitor with a novel surface-mounted lead structure is characterized in that: the core package comprises an aluminum shell, a core package and a rubber plug, wherein the core package is arranged in the aluminum shell in a sealing mode through the rubber plug, the core package comprises anode foil, electrolytic paper and cathode foil, and the anode foil, the electrolytic paper and the cathode foil are wound to form the core package; the anode foil and the cathode foil are respectively connected with an anode guide pin and a cathode guide pin, and the anode guide pin and the cathode guide pin extend out of the rubber plug; the positive pole guide pin all includes connecting portion and external portion with the negative pole guide pin, connecting portion are L shape setting with external portion, be provided with the arch in the external portion, bellied highly be greater than or equal to 1mm, bellied intermediate distance aluminium shell's horizontal distance is greater than or equal to 1 mm.
2. The aluminum electrolytic capacitor with a novel mounting lead structure as claimed in claim 1, wherein: the distance between the external part and the shell of the aluminum electrolytic capacitor is greater than or equal to 1 mm.
3. The aluminum electrolytic capacitor with a novel mounting lead structure as claimed in claim 1, wherein: the bulge is arranged at the joint part between the connecting part and the external connecting part.
4. The aluminum electrolytic capacitor with a novel mounting lead structure as set forth in any one of claims 1 to 3, wherein: the bulge is U-shaped, V-shaped or arc-shaped.
5. The aluminum electrolytic capacitor with a novel mounting lead structure as set forth in any one of claims 1 to 3, wherein: the connecting part of the external connecting part and the aluminum substrate is flattened or is directly flat.
6. The aluminum electrolytic capacitor with a novel mounting lead structure as claimed in claim 5, wherein: the distance between the flattened part on the external connecting part and the bulge is more than or equal to 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020877358.3U CN212411843U (en) | 2020-05-22 | 2020-05-22 | Aluminum electrolytic capacitor with novel surface-mounted lead structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020877358.3U CN212411843U (en) | 2020-05-22 | 2020-05-22 | Aluminum electrolytic capacitor with novel surface-mounted lead structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212411843U true CN212411843U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020877358.3U Active CN212411843U (en) | 2020-05-22 | 2020-05-22 | Aluminum electrolytic capacitor with novel surface-mounted lead structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212411843U (en) |
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2020
- 2020-05-22 CN CN202020877358.3U patent/CN212411843U/en active Active
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