Mitsubishi Electric Corporation

Hiroki Asou

Mineo Yamamoto

Mamoru Kawakubo

Hiroyuki Ishii

Tougo Yamazaki

Noriaki Matsunaga

A manufacturing method of a water circulating pump including a shaft, a pump part having a first casing in which a first concavity is formed for receiving one end portion of the shaft to restrain rotation of the shaft. A stator part has a second casing in which a second concavity is formed for receiving another end portion of the shaft to restrain rotation of the shaft and a stator for rotating a rotor by electromagnetic interaction. The method includes inserting the another end portion of the shaft into a position corresponding to the second concavity of a mold for molding the second casing, and molding the second casing by injecting a thermoplastic resin into the mold for molding the second casing into which the another end portion of the shaft has been inserted.

Water circulating pump, manufacturing method thereof, and heat pump apparatus

An electric motor in which the cost of parts and the cost of processing are reduced by installing a fan cover, a capacitor installation box, and a foot plate on a molded stator without addition of installation parts. In the electric motor (), the stator () is molded using a thermosetting resin. The stator () after the molding has a foot plate installation section () to which the foot plate () is installed, and prepared holes for screws for fixing the foot plate () are exposed on the foot plate installation section ().

Motor, pump, and method of manufacturing the motor

An object is to provide a motor that is designed to reduce the parts costs and the processing costs, without additional parts for fixing, by incorporating a fan cover, a condenser assembly box, and a foot plate into a molded stator. A motoraccording to this invention has a stator, which is molded of a thermosetting resin as a molded stator. The motoris characterized in that the molded statorincludes a foot plate mounting portionwhere a foot plateis mounted, and in that prepared holes for screw fixing of the foot plateare exposed from a mold surface at the foot plate mounting portion

An objective is to provide a motor stator that may achieve: a reduction in parts costs by shaping coil ends so that length thereof is reduced, thereby reducing the amount of use of copper, and minimizing the amount of use of binding strings for securing the coil ends in place; a reduction in manufacturing process costs by a structure which allows a protector and a wire lead outlet part to be easily assembled; and then an improvement in quality of a stator by firmly holding the coil ends and the protector. The motor stator may include a stator coreincluding slots; a plurality of cut surfaces forming flat surfaces on the outer surface of the stator core; end surface insulating platesformed in an approximately same shape as the shape of magnetic steel plates punched out, and assembled into the stator coreon both axial end surfaces thereof; projections formed in a vicinity of a peripheral portion of an end surface insulating plate, and engaged with the cut surfaces on the stator core; slot-like cutouts, a little larger in size than the slots, formed on an inner peripheral side of the each end surface insulating plate; and coil ends. The coil ends are shaped by pressure against the end surface insulating plates

Motor stator with improved end surface insulating plate, motor including the motor stator, pump including the motor stator, and manufacturing the motor stator

Growing community of inventors

Tokyo, Japan

Hiroki Asou