Patent · US Active

Drive device with circulating airflow

US11201520B2 · kind B2 · utility

1Cited by

3References

17Claims

0Family size

Assignee

SEW-EURODRIVE GMBH & CO. KG · DE

Inventors

Waldemar Becker · Graben-Neudorf, DE
Domenik Hettel · Au am Rhein, DE
Thomas Rung · Flemlingen, DE
Jens Schillinger · Rastatt, DE

Key dates

Filing date	Apr 7, 2016
Grant date	Dec 14, 2021
Priority date	—
Expiry date	Aug 12, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH02K9/227
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A drive device includes an electric motor and a gear unit that is driven by the electric motor. The electric motor has a laminated stator core which includes stator windings and is accommodated in a stator housing. The stator housing has recesses that are axially uninterrupted, i.e. in particular in the direction of the rotor shaft axis, and the stator housing is surrounded, especially radially surrounded, by a housing of the drive device, in particular a tubular housing and/or a cup-shaped housing, and the housing is set apart from the stator housing, in particular such that an especially circulating airflow is able to be provided within the housing, the recesses in particular guiding the airflow through in the axial direction, and the airflow being returned in the opposite direction in the set-apart region between the stator housing part and the housing.

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