Mitsui High-tec Incorporated

Kazuhiko Umeda

Hirokazu Arakawa

Daisuke Komiya

Shuichi Nakamura

Kenichiro Iwata

A split-type laminated iron core is composed by laminating a plurality of metal plate materials having an annular shape. The metal plate material includes a first split piece and a second split piece arranged in a circumferential direction and divided by a predetermined cutting line. A shear surface formed on a first end surface of the first split piece and a shear surface formed on a second end surface of the second split piece abut on each other, and the first split piece and the second split piece are temporarily connected via the cutting line defined by a boundary between the first end surface and the second end surface so that the first end surface and the second end surface do not completely overlap.

Split-type laminated iron core and method for manufacturing split-type laminated iron core

A laminated stator coreand a manufacturing method thereof, the method including producing a plurality of core sheetsandfrom a strip, endsof the stripbeing a part of a product without being cut twice, and rotating and laminating the core sheets. A laminated stator core formed by core sheets blanked from a magnetic strip, both ends of the magnetic strip being one of the sides of the core sheets, wherein the identically shaped core sheets each have a rotor space in the center thereof, each rotor space having a center located off-center in one direction with respect to each center of the core sheets, and the core sheets are rotated by a predetermined angle before being laminated with the rotor spaces vertically aligned.

Growing community of inventors

Kitakyushu, Japan

Kazuhiko Umeda