Linear actuator for rear axle steering on a motor vehicle
AssigneeSchaeffler Technologies AG & Co. KG
InventorsBenjamin Kaiser, Mario Arnold
Life of this patent
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Abstract
The disclosure relates to a linear actuator, the housing of which encloses a pushrod which is guided displaceably along a longitudinal axis. The linear actuator includes a linear travel sensor intended for determining a position of the pushrod. A housing-side position receiver of the linear travel sensor includes a receiver section extending along the longitudinal axis, and a pushrod-side position transmitter that interacts contactlessly with the position receiver. The position transmitter is made from an electrically conductive material, and a transmitter contour of the linear travel sensor is curved about at least one dimensional axis.
Claims20
A linear actuator, comprising:
- a screw drive including a threaded spindle coupled to a pushrod,
- a nut arranged on the threaded spindle,
- an electric motor configured to rotate the nut so as to displace the threaded spindle and push rod together along a longitudinal axis,
- a housing enclosing, the pushrod,
- an inductive linear travel sensor configured for determining a position of the pushrod, the inductive linear travel sensor having:
- a housing-side position receiver comprising a receiver section extending along the longitudinal axis, and
- a pushrod-side position transmitter configured to interact contactlessly with the housing-side position receiver, the pushrod-side position transmitter constructed from an electrically conductive material and having a transmitter contour curved about at least one dimensional axis.
A linear actuator, comprising:
- a housing,
- a pushrod at least partially enclosed by the housing,
- a threaded spindle coupled to the pushrod,
- a nut arranged on the threaded spindle,
- an electric motor configured to rotate the nut such that rotary motion of the nut is converted to translational movement of the threaded spindle and pushrod along a longitudinal axis,
- an inductive linear travel sensor having:
- a position receiver comprising a receiver section extending along the longitudinal axis, and
- a position transmitter constructed from an electrically conductive material having a transmitter contour curved about at least one dimensional axis, the position transmitter configured to interact contactlessly with the position receiver via the transmitter contour to determine a longitudinal position of the linear actuator.
A linear actuator, comprising:
- a housing enclosing a pushrod, the pushrod guided displaceably along a longitudinal axis,
- an inductive linear travel sensor configured for determining a position of the pushrod, the inductive linear travel sensor having:
- a housing-side position receiver comprising a receiver section extending along the longitudinal axis, and
- a pushrod-side position transmitter:
- configured to interact contactlessly with the housing-side position receiver,
- constructed from an electrically conductive material, and
- having:
- a ring-shaped securing section fully circumscribing the pushrod, the ring-shaped securing section configured to fix the pushrod-side position transmitter to the pushrod, and
- a transmitter contour curved about at least one dimensional axis.
Dependencies are inferred from the claim text.