Waterproof fan
US12176785B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2022 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Dec 26, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/225
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A waterproof fan includes: a rotating blade configured to be rotatable about a rotation axis; a rotor including a permanent magnet; a stator including a plurality of stator cores located on an inner diameter side relative to the rotating blade, the plurality of stator cores extending in a radial direction relative to the rotation axis, and windings each wound around a respective stator core; a circuit board electrically connected to the windings; a waterproof cover including a first resin, the waterproof cover covering the circuit board; and a molded portion including a second resin, the molded portion covering at least the stator, the waterproof cover includes: a partitioning portion separating the windings from the circuit board; and a protruding portion protruding from the partitioning portion into a space between the windings, and gaps between the windings, and the partitioning portion and the protruding portion are filled with the second resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.