Patent · US Active

Chassis actuator

US8943916B2 · kind B2 · utility

14Cited by

15References

14Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Juergen Osterlaenger · Emskirchen, DE
Mark Lauger · Pretzfeld, DE
Thomas Mehlis · Kleinsendelbach, DE

Key dates

Filing date	Sep 21, 2011
Grant date	Feb 3, 2015
Priority date	—
Expiry date	Oct 14, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/18704
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A chassis actuator adjusting a movably mounted component of a chassis, which has a first actuator component connected to the movably mounted component and a second actuator component connected to a fixed chassis component. The actuator components are adjustable axially by a ball screw that has a threaded spindle and a nut which runs on spindle. The nut is driveable by a drive motor that has a rotor coupled to the nut and a fixed stator arranged axially symmetrically with respect to the nut. The rotor is coupled to the nut by a wrap spring which radially surrounds the nut and via which the nut is rotated during rotation of the rotor and which forms a brake device. The brake device can be actuated by an external chassis force which acts on and rotates the nut and builds up a friction moment that counteracts the rotation of the nut.

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