CN218525459U - Cylindrical direct-current filter capacitor upper cover - Google Patents
Cylindrical direct-current filter capacitor upper cover Download PDFInfo
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- CN218525459U CN218525459U CN202222652176.8U CN202222652176U CN218525459U CN 218525459 U CN218525459 U CN 218525459U CN 202222652176 U CN202222652176 U CN 202222652176U CN 218525459 U CN218525459 U CN 218525459U
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- circular
- step surface
- circular plate
- upper cover
- side wall
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Abstract
The utility model discloses a cylindrical DC filter capacitor upper cover, which comprises a circular plate and a circular side wall integrally connected with the edge of the circular plate, wherein two electrode mounting nuts are fixed on the circular plate, and a filler filling opening is arranged on the circular plate; the outer side surface of the circular side wall is provided with a first step surface and a second step surface, the first step surface is higher than the second step surface, the first step surface is connected with the edge of the circular plate, and the second step surface is connected with one end of the circular side wall, which is far away from the circular plate; one end of the circular side wall, which is far away from the circular plate, is provided with a notch groove which is parallel to the axial direction of the circular side wall. The cylindrical direct-current filter capacitor upper cover is easier to be arranged in the aluminum shell port, the second step surface enables the combination of the first step surface and the aluminum shell port to be extended, the first step surface is easier to be tightly combined with the aluminum shell, meanwhile, the gap groove enables the filler in the capacitor to flow more smoothly at the combination part of the upper cover and the aluminum shell, the flowability of the filler is improved, and the sealing performance of the product is further improved.
Description
Technical Field
The utility model relates to a filter capacitor technical field especially relates to a cylinder type direct current filter capacitor upper cover.
Background
The filter capacitor is an energy storage device, and is usually installed at two ends of a rectification circuit to reduce alternating current ripple coefficient so as to improve high-efficiency smooth direct current output, the filter capacitor has electric polarity, one end of an electrolytic capacitor is a positive electrode, the other end of the electrolytic capacitor is a negative electrode, the positive electrode end is connected to the positive end of a rectification output circuit, and the negative electrode is connected to the negative end of the circuit.
The upper cover of the existing direct current filter capacitor is combined with the inner wall of the port of the aluminum shell through the cylindrical side surface to be installed, in order to enable the upper cover and the aluminum shell to be combined tightly, the size of the side surface of the upper cover needs to be slightly larger, and therefore the problem that the upper cover and the aluminum shell are difficult to operate when being assembled is solved, in order to enable the upper cover and the aluminum shell to be assembled tightly, the side wall thickness of the upper cover is also designed to be thicker so as to improve the strength, but the phenomenon that the filler inside the capacitor is not completely filled in the capacitor flows is caused.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem who exists among the background art, the utility model provides a cylinder type direct current filter capacitor upper cover.
The utility model provides a cylinder type direct current filter capacitor upper cover, the upper cover includes the plectane and the annular lateral wall of integrative connection at the disc edge, is fixed with two electrode mounting nuts on the plectane, is equipped with the stopping filling opening on the plectane; the outer side surface of the circular side wall is provided with a first step surface and a second step surface, the first step surface is higher than the second step surface, the first step surface is jointed with the edge of the circular plate, and the second step surface is jointed with one end of the circular side wall, which is far away from the circular plate; one end of the circular side wall far away from the circular plate is provided with a gap groove which is parallel to the axial direction of the circular side wall.
Preferably, the notch grooves are distributed in a circumferential array around the circumference of the circular side wall.
Preferably, one end of the notch groove close to the circular plate is in a circular arc shape.
Preferably, the inner side surface of the circular side wall is provided with a reinforcing rib which is parallel to the axial direction of the circular side wall.
Preferably, the reinforcing ribs are distributed in a circumferential array around the circumference of the circular side wall.
Preferably, the filler pouring opening is oval in shape.
The utility model discloses a cylinder type direct current filter capacitor upper cover is equipped with first step face and second step face in the ring shape lateral wall outside, and the second step face has reduced the external diameter of ring shape lateral wall assembly end, and ring shape lateral wall assembly end still is equipped with the breach groove. The notch groove and the second step surface improve the toughness of the assembling end, so that the upper cover is more easily arranged in the port of the aluminum shell, the second step surface also enables the combination of the first step surface and the port of the aluminum shell to be extended, the first step surface is more easily and tightly combined with the aluminum shell, meanwhile, the notch groove enables filler in the capacitor to flow more smoothly at the combination part of the upper cover and the aluminum shell, the flowability of the filler is improved, and the sealing performance of a product is improved.
Drawings
Fig. 1 is a perspective view of an upper cap of a cylindrical dc filter capacitor proposed in the embodiment;
FIG. 2 is a front view of an upper cap of a cylindrical DC filter capacitor in an embodiment;
FIG. 3 isbase:Sub>A cross-sectional view taken along the line A-A in FIG. 2;
FIG. 4 is a side view of an upper cap of a cylindrical DC filter capacitor in an embodiment;
fig. 5 is a schematic diagram of the cylindrical dc filter capacitor upper cover in the embodiment when it is mounted on the housing.
Detailed Description
Referring to fig. 1-5, according to the embodiment of the present invention, the cylindrical dc filter capacitor upper cover includes a circular plate 1 and a circular sidewall 2 integrally connected to the edge of the circular plate, two electrode mounting nuts 3 are fixed on the circular plate 1, a filler filling opening 11 is formed on the circular plate 1, the filler filling opening 11 is oval, and after the upper cover and the aluminum shell are assembled together, the filler can be injected into the aluminum shell through the filler filling opening 11 for sealing.
The outer side surface of the circular side wall 2 is provided with a first step surface 21 and a second step surface 22, the first step surface 21 is higher than the second step surface 22, the first step surface 21 is connected with the edge of the circular plate 1, and the second step surface 22 is connected with one end of the circular side wall 2, which is far away from the circular plate 1.
One end of the circular side wall 2 far away from the circular plate 1 is also provided with a gap groove 23 which is parallel to the axial direction of the circular side wall.
As shown in fig. 5, when the cylindrical dc filter capacitor upper cover is assembled with the aluminum case 5, the end of the circular sidewall 2 away from the circular plate 1 is an assembly end, and the second step surface 22 reduces the outer diameter of the circular sidewall 2, thereby reducing the wall thickness of the circular sidewall 2, and the notch groove 23 also makes the assembly end of the circular sidewall 2 have better flexibility, so that the assembly end can be inserted into the port of the aluminum case 5 more easily, and the cylindrical dc filter capacitor upper cover is more labor-saving. Then the upper cover is combined with the aluminum shell through the first step surface 21, the outer diameter and the strength of the first step surface 21 are larger, and the tight combination with the aluminum shell 5 can be ensured. Therefore, the upper cover is easy to install and can ensure better installation tightness.
It should be noted that the notch 23 also has the function of guiding the filler to flow, and when the filler is filled into the capacitor, the notch 23 can improve the fluidity of the filler at the joint of the upper cover and the aluminum shell, thereby improving the sealing effect of the filler on the capacitor.
Preferably, the notch grooves 23 are circumferentially distributed around the circular side wall 2 in a circumferential array, one end of the notch groove 23 close to the circular plate 1 is in a circular arc shape, and the inner end of the notch groove 23 is in a circular arc shape, so that the fluidity of the filler can be increased.
In the present embodiment, since the second step surface 22 weakens the wall thickness of the circular side wall 2 and improves the toughness thereof, in order to make the first step surface 21 of the circular side wall 2 have sufficient strength, the inner side surface of the circular side wall 2 of the upper cover is further provided with reinforcing ribs 24 parallel to the axial direction thereof, and the reinforcing ribs 24 are circumferentially distributed around the circular side wall 2 in a circumferential array.
The reinforcing ribs 24 can improve the toughness and the strength of the circular side wall 2 of the upper cover, so that the assembling tightness of the upper cover and the aluminum shell can be improved.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A cylindrical direct current filter capacitor upper cover is characterized by comprising a circular plate (1) and a circular side wall (2) integrally connected to the edge of the circular plate, wherein two electrode mounting nuts (3) are fixed on the circular plate (1), and a filler filling opening (11) is formed in the circular plate (1); a first step surface (21) and a second step surface (22) are arranged on the outer side surface of the circular side wall (2), the first step surface (21) is higher than the second step surface (22), the first step surface (21) is connected with the edge of the circular plate (1), and the second step surface (22) is connected with one end, far away from the circular plate (1), of the circular side wall (2); one end of the circular side wall (2) far away from the circular plate (1) is provided with a gap groove (23) which is parallel to the axial direction of the circular side wall.
2. The cylindrical dc filter capacitor upper cover according to claim 1, characterized in that the notch grooves (23) are distributed in a circumferential array around the circumference of the circular sidewall (2).
3. The cylindrical dc filter capacitor upper cover according to claim 2, wherein one end of the cutaway groove (23) near the circular plate (1) is arc-shaped.
4. A cylindrical dc filter capacitor top cover according to any of claims 1-3, characterized in that the inner side of the circular sidewall (2) is provided with ribs (24) parallel to its axial direction.
5. The cylindrical dc filter capacitor top cap according to claim 4, wherein the ribs (24) are circumferentially arranged in a circumferential array around the circular sidewall (2).
6. The cylindrical dc filter capacitor upper cover according to any one of claims 1-3, wherein the shape of the filling material filling opening (11) is elliptical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222652176.8U CN218525459U (en) | 2022-10-09 | 2022-10-09 | Cylindrical direct-current filter capacitor upper cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222652176.8U CN218525459U (en) | 2022-10-09 | 2022-10-09 | Cylindrical direct-current filter capacitor upper cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218525459U true CN218525459U (en) | 2023-02-24 |
Family
ID=85247598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222652176.8U Active CN218525459U (en) | 2022-10-09 | 2022-10-09 | Cylindrical direct-current filter capacitor upper cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218525459U (en) |
-
2022
- 2022-10-09 CN CN202222652176.8U patent/CN218525459U/en active Active
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