CN220653663U - Dust cover and dust cover structure - Google Patents
Dust cover and dust cover structure Download PDFInfo
- Publication number
- CN220653663U CN220653663U CN202321285960.8U CN202321285960U CN220653663U CN 220653663 U CN220653663 U CN 220653663U CN 202321285960 U CN202321285960 U CN 202321285960U CN 220653663 U CN220653663 U CN 220653663U
- Authority
- CN
- China
- Prior art keywords
- dust cover
- power module
- printed board
- module
- dust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000428 dust Substances 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical group N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000009825 accumulation Methods 0.000 abstract description 4
- 238000004026 adhesive bonding Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Casings For Electric Apparatus (AREA)
Abstract
The utility model discloses a dust cover and a dust cover structure, wherein the dust cover comprises a body, a clamping groove and a module pin hole, wherein the clamping groove and the module pin hole are formed in the body, the dust cover structure comprises a power module, a printed board and the dust cover, the power module is arranged at the bottom, the printed board is arranged at the top, the dust cover is arranged between the power module and the printed board, the dust cover is clamped on the power module through the clamping groove, the power module pin penetrates through the module pin hole and is welded on the printed board, and the power module is fixedly connected with the printed board through a screw. The utility model can prevent the module pins from causing short circuit after dust accumulation and moisture absorption, simultaneously reduce the tedious and unattractive phenomena of gluing the periphery after welding of the conventional production modules, simplify the processing technology, improve the production efficiency and improve the reliability of products.
Description
Technical Field
The present disclosure relates to power electronics, and particularly to a dust cover for a power module and a dust cover structure thereof.
Background
The power module is an advanced hybrid integrated power component which takes the IGBT as a core and integrates the power switch and the driving circuit, has the advantages of small volume, multiple functions, small power consumption, convenient use and the like, and is widely applied to a general frequency converter. In the actual working environment of the frequency converter, impurities such as dust are usually carried, and the impurities are attached to components after entering the frequency converter. The pin position of the power module serving as an important component is easy to adsorb deposited dust, and the deposited dust causes short circuit fault of the power module after long-term moisture absorption, so that potential safety hazard is brought to the whole frequency converter.
Disclosure of Invention
The utility model aims at solving the problems and provides a dust cover and a dust cover structure, which can prevent short circuit caused by dust accumulation and moisture absorption of pins of a power module and improve the reliability of products.
In order to achieve the above purpose, the utility model provides a dust cover, which comprises a body, a clamping groove arranged in the body and a module pin hole.
Preferably, the clamping grooves are distributed around the body, and the notch is downward.
Preferably, the module pin hole is a through hole, the position of the module pin hole corresponds to that of the module pin, and the aperture of the module pin hole is larger than the diameter of the module pin bonding pad.
Preferably, the dust cover is made of flame-retardant high-temperature-resistant silicon rubber material.
The utility model also provides a dust cover structure which comprises a power module, a printed board and the dust cover.
Preferably, the power module is disposed at the bottom, the printed board is disposed at the top, and the dust cover is disposed between the power module and the printed board.
Preferably, the dust cover is clamped on the power module through a clamping groove, and the inner surface of the clamping groove is attached to the surface of the power module.
Preferably, the power module pins pass through module pin holes of the dust cover and are welded on the printed board.
Preferably, the power module and the printed board are connected and fixed by a screw.
The dustproof cover and the dustproof cover structure provided by the utility model can prevent the module pins from being short-circuited after dust accumulation and moisture absorption, reduce tedious and unsightly phenomena of peripheral gluing after conventional production and welding, simplify the processing technology, improve the production efficiency and improve the reliability of products.
Drawings
FIG. 1 is a schematic perspective view of a dust cap according to the present utility model;
FIG. 2 is a schematic front view of a dust cap according to the present utility model;
fig. 3 is a schematic top view of a dust cover according to the present utility model.
Detailed Description
The utility model will be described in further detail below with reference to the drawings and the detailed description, but is not intended to limit the utility model.
Fig. 1 is a schematic perspective view of a dust cover according to the present utility model, as shown in fig. 1, the material of the dust cover provided by the present utility model is a flame-retardant and high-temperature-resistant silicone rubber material. The dust cover comprises a body 1, clamping grooves 2 arranged in the body 1, and module pin holes 3, wherein the clamping grooves 2 are distributed around the body 1, and the notch is downward. The module pin holes 3 are through holes, the positions of the module pin holes correspond to the positions of the module pins, and the aperture of the module pin holes is larger than the diameter of the module pin bonding pads.
Fig. 2 is a front view of a dust cover according to the present utility model, and fig. 3 is a top view of a dust cover according to the present utility model. As shown in fig. 2 to 3, the dust cover structure provided by the utility model comprises a power module 5, a printed board 6 and the dust cover 4. The power module 5 is arranged at the bottom, the printed board 6 is arranged at the top, and the dust cover 4 is arranged between the power module 5 and the printed board 6. The dust cover 4 is clamped on the power module 5 through the clamping groove 2, and the inner surface of the clamping groove 2 is attached to the module surface. Pins of the power module 5 pass through module pin holes 3 of the dust cover 4 and are welded on the printed board 6. The power module 5 and the printed board 6 are fixedly connected by adopting screws.
The dustproof cover and the dustproof cover structure disclosed by the utility model can prevent the module pins from being short-circuited after dust accumulation and moisture absorption, reduce tedious and unsightly phenomena of peripheral gluing after conventional production and welding, simplify the processing technology, improve the production efficiency and improve the reliability of products.
Although specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.
Claims (9)
1. A dust cover comprises a body, a clamping groove and a module pin hole, wherein the clamping groove and the module pin hole are formed in the body.
2. The dust cover of claim 1, wherein the clamping grooves are distributed around the body and the notches are downward.
3. The dust cap of claim 1, wherein the module pin holes are through holes having a position corresponding to the power module pin positions and a hole diameter greater than the power module pin pad diameter.
4. The dust cover of claim 1, wherein the dust cover is a flame retardant, high temperature resistant silicone rubber material.
5. A dust cover structure characterized by comprising a power module, a printed board, and the dust cover according to any one of claims 1 to 4.
6. The dust cover structure of claim 5, wherein the power module is disposed at a bottom portion, the printed board is disposed at a top portion, and the dust cover is disposed between the power module and the printed board.
7. The dust cover structure of claim 6, wherein the dust cover is engaged with the power module by a slot, and an inner surface of the slot is attached to a surface of the power module.
8. The dust cap structure of claim 6, wherein the power module pins pass through module pin holes of the dust cap and are soldered to the printed board.
9. The dust cover structure of claim 6, wherein the power module is fixed to the printed board by screw connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321285960.8U CN220653663U (en) | 2023-05-25 | 2023-05-25 | Dust cover and dust cover structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321285960.8U CN220653663U (en) | 2023-05-25 | 2023-05-25 | Dust cover and dust cover structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220653663U true CN220653663U (en) | 2024-03-22 |
Family
ID=90284469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321285960.8U Active CN220653663U (en) | 2023-05-25 | 2023-05-25 | Dust cover and dust cover structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220653663U (en) |
-
2023
- 2023-05-25 CN CN202321285960.8U patent/CN220653663U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |