Drive unit with a first and a second motor
AssigneeSchaeffler Technologies AG & Co. KG
InventorsDaniel Neufeld, Guenter Schmid, Ralf Schueler
Life of this patent
Estimating the term…
Abstract
A drive unit, which has a first motor and a second motor, for rotationally and linearly moving a working element with respect to a first housing element In order to permit a design and a mounting and to reduce the required axial installation space and cost, the drive unit has bearing arrangement which, in the case of a linear movement of the working element with respect to the first housing element, permits a primary part and a secondary part of the first motor and/or of the second motor to be arranged in an axially non-displaceable fashion.
Claims17
A drive unit for rotationally and linearly moving a working element with respect to a first housing element, the drive unit comprising:
- a threaded spindle arranged within the first housing element, the threaded spindle including a threaded nut rotatably mounted in the first housing element, the threaded spindle fixed to the working element;
- a first motor secured within the first housing element and having a primary part and a secondary part;
- a second motor secured proximate the first housing element and having a primary part and a secondary part;
- and,
- bearing means secured proximate the first housing element and which, in the case of the first and/or the second motor, is operatively arranged to allow for the primary part and the secondary part of the motors to be arranged in an axially non-displaceable manner with respect to one another when the working element is moved linearly in relation to the first housing elements;
- wherein the working element is moveable linearly in a first direction by the first motor driving the threaded nut and the second motor providing a first counter-torque to the working element;
- and
- wherein the working element is moveable linearly in a second direction opposite the first direction by the first motor driving the threaded nut, the second motor driving the working element, and the first motor providing a second counter-torque to the working element.
A drive unit for rotationally and linearly moving a working element with respect to a first housing element, comprising:
- a threaded spindle arranged within the first housing element, the threaded spindle including a threaded nut rotatably mounted in the first housing element, the threaded spindle fixed to the working element;
- a first motor secured within the first housing element and operatively arranged to engage the working element;
- and,
- a second motor secured proximate the first housing element and operatively arranged to engage the working element, the first and second motors rotatable in a same direction;
- wherein the working element is moveable linearly in a first direction by the first motor driving the threaded nut and the second motor providing a first counter-torque to the working element;
- and,
- wherein the working element is moveable linearly in a second direction opposite the first direction by the first motor driving the threaded nut, the second motor driving the working element, and the first motor providing a second counter-torque to the working element.
A drive unit for rotationally and linearly moving a working element with respect to a first housing element, comprising:
- a first assembly within the first housing element, the first assembly operatively arranged to engage the working element and comprising:
- a first threaded spindle arranged coaxially with and fixedly secured to the working element, a first thread of the first threaded spindle arranged in a first direction;
- a threaded nut rotatably mounted to the first housing element and engageable with the first threaded spindle;
- and
- a first motor secured to the housing element and arranged to engage the threaded nut;
- and,
- a second assembly formed within the first housing element, the second assembly including:
- a second threaded spindle arranged coaxially with and rotationally fixed and axially non-displaceable with respect to the working element, the second threaded spindle having a second thread arranged in a second direction different than the first direction;
- a second threaded nut rotatably mounted to the first housing element and engageable with the second threaded spindle;
- and,
- a second motor operatively arranged to engage the working element.
Dependencies are inferred from the claim text.