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US 9,316,233 B2Granted
Propeller fan and manufacturing method thereof
AssigneeFujitsu General Limited
InventorShunzen Yoshida
Life of this patent
Estimating the term…
Abstract
A propeller fan molded by injection molding using a resin material containing a continuous fiber, includes a hub having an end surface wall and a peripheral wall; and a plurality of blades on an outer periphery of the hub, the propeller fan being molded by providing a plurality of injection positions for injecting the resin material containing the continuous fiber in a part of the end surface wall corresponding to a root portion of one of the blades of the hub.
Claims1
A method of manufacturing a propeller fan comprising:
- molding the propeller fan including a hub having an end surface wall and a peripheral wall, and a plurality of blades on an outer periphery of the hub, using a metal mold including a cavity and a runner connected to the cavity via a gate and serving as an injection passage of a molten resin containing a continuous fiber, by injecting the molten resin into the cavity through the runner,
- wherein the plurality of gates is set at a part of the end surface wall corresponding to a root portion of the blade of the propeller fan in the cavity, and
- wherein the plurality of injection positions is provided so that a flow direction of the resin material containing the continuous fiber in the root portion of the one blade of the hub is regulated by the flow of the resin material from the injection positions adjacent to each other, and is in a direction perpendicular to a width direction of the root portion of the blade.
Dependencies are inferred from the claim text.