Daikin Industries, Ltd.

Hiroki Shirasaka

Satoshi Tsukamoto

Keiji Aota

Hideki Fujii

Shoujirou Naka

Hidemi Tanji

Yoshinori Kagawa

Yoshihiro Igarashi

Seiichi Murakami

A stator includes a stator core in which an annular back yoke is integrated with a plurality of teeth circumferentially arranged on the back yoke at intervals, and an insulator that sandwiches the stator core from axial sides of the stator core. The insulator is molded integrally with the stator core using resin molding such that the insulator covers an inner surface of a slot portion of the stator core. A motor includes a rotor and the stator radially facing the rotor. A compressor includes a hermetic container, a compression mechanism disposed in the hermetic container, the motor disposed in the hermetic container to drive the compression mechanism.

Stator, motor, and compressor having an integrally molded insulator

A stator includes a core having inwardly extending teeth, an insulator placed on an end surface of the core, coil windings wound the teeth, outgoing lines extending from both ends of the coil windings, and a yarn securing the outgoing lines to the insulator. The insulator has an outer wall surrounding a central axis and erected to upwardly extend from the end surface, a plurality of teeth cover portions radially inwardly extending from the outer wall, and a plurality of inner walls erected at an end portions of the teeth cover portions. The coil windings are placed between the outer wall and corresponding inner walls. A passage portion radially extends and is formed in at least one of the teeth cover portions to pass the yarn, and the passage portion is spaced from the coil windings.

Stator having insulator with yarn passage portion, motor having the stator, and compressor

A stator includes a core having inwardly extending teeth, an insulator placed on an end surface of the core, coil windings wound the teeth, outgoing lines extending from both ends of the coil windings, and a yarn securing the outgoing lines to the insulator. The insulator has an outer wall surrounding a central axis and erected to upwardly extend from the end surface, a plurality of teeth cover portions radially inwardly extending from the outer wall, a plurality of inner walls erected at an end portions of the teeth cover portions, and at least one projection portion. The coil windings are placed between the outer wall and corresponding inner walls. At least one passage portion is formed in the outer wall to pass the yarn. The projection portion spaces the outgoing lines from the coil windings and secures the outgoing lines, and radially inwardly extends from the outer wall.

Stator, and motor and compressor having the stator

A stator includes a core and an insulator. The core has a plurality of annularly arranged tooth portions. The insulator is disposed on an end portion of the core, and has an annular wall portion extending in a direction departing from the core. A protrusion protrudes radially outward across an entire circumference of the wall portion, and the protrusion is provided on an outer circumferential surface of the wall portion.

Stator, motor, and compressor

A stator for a motor of a compressor includes a stator core, an insulator fitted on an axial end face of the stator core, and coils wound around the stator core and the insulator. The insulator has an annular portion, a plurality of circumferentially arranged tooth portions projecting radially inwardly from an inner peripheral surface of the annular portion, and a cylindrical-shaped wall section erected on an axial end face of the annular portion. The coils include crossover wires routed on an outer peripheral surface of the wall section of the insulator so as to extend obliquely relative to a plane orthogonal to an axis of the stator, as viewed in a direction orthogonal to the axis.

A motor for a compressor includes a rotor and a stator disposed radial outside of the rotor. The stator includes a stator core having oppositely facing axial end faces, insulators disposed so as to face the end faces, and coils wound on the stator core and the insulators. Each of the insulators has an annular part, a plurality of teeth protruding radially inwardly from an inner circumferential surface of the annular part at specified circumferential intervals, an outer circumferential wall having one end fixed to an end face of the annular part, and protrusions disposed on an outer circumferential surface of an outer circumferential wall of an insulator. At least one lead wire of the coils is drawn out to an outer circumferential side of the outer circumferential wall, guided along the outer circumferential wall, and passed on a side of the protrusions facing the stator core.

Growing community of inventors

Kusatsu, Japan

Hiroki Shirasaka