发明名称 Sector of fan and its manufacturing method
摘要 The present invention relates to a sector of fan and its manufacturing method, including non-skeleton sector and skeleton sector. The non-skeleton sector of fan is molded by injecting polyurethane foam into a sector molding die; the skeleton sector of fan is comprised of a main body and a framework, wherein said main body and the framework are molded together in similar shape with solid casting resin or other similar material; said framework made of steel wire according the sector's shape and size is comprised of an outer shaped ring, reinforcing ribs and a core bar, if necessary inner shaped rings and crossing reinforcing ribs employed for enhancing the intensity of the sector, but it is always in grid structure. Said outer shaped ring, the reinforcing ribs and the core bar are fastened together, and then an assembling disk is fixed on the back end. Combined framework is placed into the inside of the sector molding die, and then inject resin into the molding die, under the normal temperature said resin is foamed and molded, and then open the molding die, take out the molded sector, after buffing treatment and spraying coating paint processes, a sector goods come out.
申请公布号 US2006034696(A1) 申请公布日期 2006.02.16
申请号 US20040915897 申请日期 2004.08.10
申请人 CHEN ZHAO-CHENG 发明人 CHEN ZHAO-CHENG
分类号 F04D29/38 主分类号 F04D29/38
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