Patent ID: 6756709
Filing Date: 2004-06-29
Classification: H02K

Abstract:
A stator structure of a variable reluctance resolver comprising:a stator core having a circular shape, in which a plurality of fixed magnetic-poles each having a fixed magnetic-pole tooth project toward the center of a circular yoke member, and a plurality of planar bodies are laminated; a first stator magnetic-pole assembly including coil winding sections having the same shape and number as the fixed magnetic poles each having the fixed magnetic-pole teeth of the stator core, and a part mounting section for extracting stator windings; and a second stator magnetic-pole assembly including coil winding sections having the same shape and number as the fixed magnetic poles each having the fixed magnetic-pole tooth of the stator core, and including no part mounting section, wherein the stator cores are sandwiched by the first stator magnetic-pole assembly and the second stator magnetic-pole assembly in a manner such that the fixed magnetic poles and the coil winding sections overlap to form a stator assembly; and wherein the stator assembly having the stator windings wound around the coil winding sections thereof is surrounded by a synthetic resin, characterized in that: said synthetic resin surrounds said first stator magnetic-pole assembly and said second stator magnetic-pole assembly at said stator winding sections in a manner such that a surface at which said fixed magnetic-pole teeth of said stator core face a rotor is exposed, and a surface of said synthetic resin forms the same circumferential surface as the surface at which said fixed magnetic-pole teeth of said stator core face said rotor, wherein said first stator magnetic-pole assembly and said second stator magnetic-pole assembly include uneven sections to provide an increased contact surface at a contact section for sealing with said synthetic resin.