Patent · US Active

Connection of a rotor shaft to a laminated core

US12316162B2 · kind B2 · utility

0Cited by

4References

15Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Konrad Artmann · Schondorf am Ammersee, DE
Lothar Dietl · Aalen, DE
Tobias Schmid · Canton, US
Helmut Burger · Waiblingen, DE

Key dates

Filing date	Nov 24, 2020
Grant date	May 27, 2025
Priority date	—
Expiry date	May 7, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/003
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Rotor for an electric motor, having a rotor shaft and, mounted on the rotor shaft, a rotor core having a number of core laminations arranged along an axis of the rotor core. Each core lamination includes a central contoured aperture which is traversed by the rotor shaft and which includes at least two radially extending elevations and at least two cutouts positioned between the elevations, wherein, to form a press fit of the core laminations on the rotor shaft, a distance between the free ends of the elevations is less than a diameter of the rotor shaft, and wherein a duct extending peripherally on the rotor shaft is formed by the respective cutout in the successively arranged core laminations.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.