Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Masaya Motohashi

Akira Hashimoto

Yasuyuki Nakanishi

Yuji Nakahara

Nobuaki Miyake

Hiroyuki Akita

Toshio Arai

Daisuke Shijo

To provide a spool for a coil winding device capable of preventing poor insulation caused by a leakage of coil wires without initially inserted coil wires staying at the vicinity of slot openings. A spool for a coil winding device of this invention includes a plurality of coil winding surfaces increased stepwise in diameter from the bottom upward in a state where the spool is disposed on the coil winding device. The spool includes a front spool part and a rear spool part, which are placed at a distance from each other so that each turn of coil has a length corresponding to arbitrary lamination thickness of the stator core. The plurality of coil winding surfaces includes a coil winding surface corresponding to the outermost coil that is formed so that a portion in a radial pattern from the vicinity of a portion corresponding to a central axis of the stator core towards an opening of the slot in which each coil is loaded is extended at least to a position corresponding to a core back where the roots of the teeth outside the slot of the stator core are connected.

Spool for a coil winding device and method of loading coils

The present invention relates to a structure of a stacked stator core formed when rotary motors are manufactured and to a method of manufacturing the stacked stator core. It is possible to improve the workability in the winding process and the productivity of the stator and the rotary motor because the stacked stator core includes a plurality of stator cores, each of which is made up of a prescribed number of stacked sheet magnetic materials, a plurality of yoke membersforming each stator core, a bendable bent portionprovided between the yoke members, and an interconnecting portionfor connecting the plurality of stator coresone another while providing a difference in level, by connecting the top end of one stator core with the bottom end of the other stator core.

Stacked stator core and method of manufacturing thereof, and rotary motor and method of manufacturing thereof

The present invention relates to a structure of a stacked stator core formed when rotary motors are manufactured and to a method of manufacturing the stacked stator core. It is possible to improve the workability in the winding process and the productivity of the stator and the rotary motor because the stacked stator core includes a plurality of stator cores , each of which is made up of a prescribed number of stacked sheet magnetic materials, a plurality of yoke members forming each stator core, a bendable bent portion provided between the yoke members, and an interconnecting portion for connecting the plurality of stator cores one another while providing a difference in level, by connecting the top end of one stator core with the bottom end of the other stator core.

Growing community of inventors

Tokyo, Japan

Masaya Motohashi