Molded motor, electric motor vehicle and method of manufacturing molded motor
AssigneeSanyo Electric Co., Ltd.
InventorsTakeshi Nagao, Kenji Taguchi, Hiroaki Sagara, Tetsuji Ueta, Takashi Uchino
Life of this patent
Estimating the term…
Abstract
In a molded motor, a driving shaft is protruded from a motor case. A stator includes a molded portion forming the end face of the stator. The molded portion includes a groove portion provided in the end face of the stator. The motor case includes a protruding portion protruded toward the end face of the stator. The protruding portion, fitted into the groove portion, is made of a material having a heat conductivity higher than the molded portion.
Claims8
A molded motor comprising:
- a stator of columnar shape;
- a motor case provided on an end face of the stator;
- and
- a drive shaft rotatably supported by the motor case and configured to give a driving force to a load, wherein
- the drive shaft is protruded from the motor case,
- the stator includes a molded portion forming the end face of the stator,
- the molded portion includes a groove portion provided in the end face of the stator,
- the motor case includes a protruding portion protruded toward the end face of the stator, and
- the protruding portion, fitted into the groove portion, is made of a material having a heat conductivity higher than the molded portion.
A method of manufacturing a molded motor including a stator of columnar shape, a motor case provided on an end face of the stator, and a drive shaft rotatably supported by the motor case and configured to give a driving force to a load, the method comprising:
- a step A of forming the stator including a molded portion forming the end face by molding a plurality of teeth arranged annularly with a resin material;
- and
- a step B of placing the motor case on the end face of the stator so that the drive shaft is protruded from the motor case, wherein
- in the step A, a groove portion is formed in the end face of the stator, and
- in the step B, a protruding portion formed on the motor case is fitted into the groove portion, the protruding portion being protruded toward the end face of the stator and being made of a material having a heat conductivity higher than the molded portion.
Dependencies are inferred from the claim text.