Patent · US Active

Drive unit with an electromotive power unit and a transmission

US10247294B2 · kind B2 · utility

1Cited by

5References

19Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Thorsten Biermann · Wachenroth, DE
Philipp Storner · Baiersdorf, DE
Robert Schieck · Nuremberg, DE

Key dates

Filing date	Mar 31, 2017
Grant date	Apr 2, 2019
Priority date	—
Expiry date	Jul 25, 2037

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2057/02034
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A drive unit includes a housing having first and second chambers. An electromotive drive is disposed in the first chamber and including a hollow rotor shaft. A transmission is disposed in the second chamber and includes an output shaft extending through the rotor shaft such that a gap is formed. The transmission further includes a gearing arrangement that operably couples the output shaft to the rotor shaft and reduces a speed ratio between the rotor shaft and the output shaft so that the output shaft rotates slower than the rotor shaft when operating. The gearing arrangement includes a first element fixed to the rotor shaft and a second element that rotates slower than the first element when operating. An annular clearance is defined between the first and second elements. An annular seal has a first portion engaging with the first element and a second portion engaging with the second element.

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