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US 11,952,915 B2Granted
Fan
AssigneeDelta Electronics, Inc.
InventorsChing-Hsien Yeh, Chih-Wei Chan
Life of this patent
Estimating the term…
Abstract
A fan includes a hub and a plurality of fan blades. The hub has an axle center. The fan blades are disposed around the hub. Each of the fan blades has a bent portion, and the bent portions of the fan blades are extended along a surrounding direction surrounding the axle center. The hub is welded with the bent portion of each of the fan blades along the surrounding direction. As a result, the number of fan blades is maximized, the strength is simultaneously ensured to be enough, and the advantages of effectively enhancing the fan characteristics are achieved.
Claims12
A fan, comprising:
- a hub having an axle center;
- and
- a plurality of fan blades disposed around the hub, wherein each of the fan blades has a bent portion and a blade portion, and the bent portion of each of the fan blades is extended along a surrounding direction surrounding the axle center,
- wherein the bent portion of each of the fan blades is formed by bending a part of the blade portion of the respective fan blades, the blade portion of the respective fan blades has an opening formed adjacent to the bent portion of the respective fan blades, and the bent portion of each of the fan blades has an engaging portion, and
- wherein the hub is welded with the bent portion of each of the fan blades along the surrounding direction.
2 more elements
Dependencies are inferred from the claim text.