Japan, July 14 -- TOYO ELECTRIC MFG CO LTD has got intellectual property rights for 'ROTOR OF ELECTRIC MOTOR.' Other related details are as follows:
Application Number: JP,2022-208948
Category (FI): H02K1/276,110,H02K1/276
Stage: PROBLEM TO BE SOLVED: To provide a rotor of an electric motor in which a plurality of slots is open in a portion close to an outer circumference, permanent magnets 3 are inserted in the respective slots, a sectional shape of each of the slots in a direction orthogonal to the axis direction has a radially outer side that has a circumferential direction length longer than the circumferential direction length of a radially inner side, and is a line symmetric rectangular having four R-shaped corners, and a sectional shape of each of the permanent magnets 3 in a radial direction has four R-shaped corners C5, C6, C7, and C8 such that stress applied onto the portion in which the slots are open and toward a radially outer side is reduced to obtain a magnetic characteristic and mechanical durability simultaneously.SOLUTION: A curvature radius of two R portions, of each slot, that are positioned on a radially outer side is larger than a curvature radius of two R portions, of a permanent magnet 3, that are positioned on a radially outer side. Each of the R portions, of the permanent magnet 3, that are positioned on the radially outer side is inscribed inside a part of the corresponding R portion, of the slot, that is positioned on the radially outer side.SELECTED DRAWING: Figure 3 (Grant)
Filing Date: Dec. 26, 2022
Publication Date: July 8, 2024
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
