| 摘要 |
A method for manufacturing a resin molded stator may include: preparing a straight winding core in which neighboring partial core backs are coupled by a joint; bending the core at joints and causing distal ends of teeth to face an outer peripheral surface of a core metal to obtain a core metal assembly including a stator mounted on the core metal, arranging the core metal assembly in a mold; injecting resin into the mold, covering windings with resin, curing the resin; and removing the stator from the mold and the core metal. The core metal may include a plurality of ribs projecting outward from the outer peripheral surface, the number of the ribs being between three and the number of the teeth. Each rib may extend parallel to a center axis, and each rib may be located in a gap between the distal ends of adjacent teeth. |
| 主权项 |
1. A method for manufacturing a resin molded stator, the method comprising:
a) preparing a straight winding core comprising a plurality of core elements, a plurality of joints, and a plurality of windings, wherein the plurality of core elements are linearly arranged, the core elements each comprise a partial core back and a tooth, neighboring partial core backs of the partial core backs are coupled together by one of the joints, and the windings are wound around the respective teeth; b) bending the straight winding core at the plurality of joints into an annular shape in which the plurality of teeth are directed radially inward and causing distal ends of the plurality of teeth to face an outer peripheral surface of a columnar core metal to thereby obtain a core metal assembly in which a stator is mounted on the core metal, and arranging the core metal assembly in a mold, or causing distal ends of the plurality of teeth to face an outer peripheral surface of a columnar core metal in a mold provided with the core metal to thereby obtain a core metal assembly in which a stator is mounted on the core metal, and locating the core metal assembly in the mold; c) injecting a resin into the mold, covering at least the windings of the respective teeth with the resin, and curing the resin; and d) removing the stator molded with the resin from the mold and the core metal, wherein the core metal comprises a plurality of ribs that project radially outward from the outer peripheral surface, the number of the ribs being three or more and less than the number of the teeth, each of the plurality of ribs extends parallel to a center axis, and in the core metal assembly, each of the plurality of ribs is located in a gap between the distal ends of the teeth adjacent to each other. |
