Shaft-integrated angle sensing device
AssigneeInfineon Technologies AG
InventorsLeo Aichriedler, Peter Slama, Udo Ausserlechner
Life of this patent
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Abstract
A sensor arrangement having a rotatable driving shaft extending along a rotation axis and comprising a bore extending from a first end face of the shaft along the rotation axis; a magnet arranged at least partially within the bore and coupled to the driving shaft, the magnet configured to generate a magnetic field within the bore; a sensor element arranged at least partially within the bore, and configured to sense a rotation of the magnetic field in response to rotation of the driving shaft; and a magneto-static shield arranged to surround the magnet and the sensor element, wherein the magneto-static shield is stationary with respect to the driving shaft.
Claims20
A sensor arrangement, comprising:
- a rotatable driving shaft extending along a rotation axis and comprising a bore extending from a first end face of the driving shaft along the rotation axis;
- an annular magnet arranged at least partially within the bore and coupled to the driving shaft, the magnet configured to generate a magnetic field within the bore;
- a sensor element arranged at least partially within the bore, and configured to sense a rotation of the magnetic field in response to rotation of the driving shaft;
- a non-rotatable magneto-static shield of unitary construction and arranged to surround the magnet and the sensor element;
- and
- a component board, wherein the sensor element and the magneto-static shield are each mounted directly on the component board.
A sensor arrangement, comprising:
- a rotatable driving shaft extending along a rotation axis and comprising a bore extending from a first end face of the driving shaft along the rotation axis;
- a magnet arranged at least partially within the bore and coupled to the driving shaft, the magnet configured to generate a magnetic field within the bore;
- a sensor element arranged at least partially within the bore, and configured to sense a rotation of the magnetic field in response to rotation of the driving shaft;
- a non-rotatable magneto-static shield of unitary construction and arranged to surround the magnet and the sensor element;
- a component board, wherein the magneto-static shield is mounted on the component board;
- and
- a stator arranged to surround at least a portion of the driving shaft and to be mounted directly via a securing device on the component board,
- wherein free ends of the magneto-static shield are inserted in respective centering grooves formed within the stator.
A sensor arrangement, comprising:
- a rotatable driving shaft extending along a rotation axis and comprising a bore extending from a first end face of the driving shaft along the rotation axis;
- a magnet arranged at least partially within the bore and coupled to the driving shaft, the magnet configured to generate a magnetic field within the bore;
- a sensor element arranged at least partially within the bore, and configured to sense a rotation of the magnetic field in response to rotation of the driving shaft;
- a non-rotatable magneto-static shield of unitary construction and arranged to surround the magnet and the sensor element;
- a component board, wherein the magneto-static shield is mounted on the component board;
- and
- a stator arranged to surround at least a portion of the driving shaft,
- wherein the magneto-static shield is arranged to mount the stator to the component board.
A sensor arrangement, comprising:
- a rotatable driving shaft extending along a rotation axis, and comprising a bore extending from a first end face of the driving shaft along the rotation axis;
- an annular magnet arranged to surround the first end face of the rotatable driving shaft, and configured to generate a magnetic field;
- a sensor element configured to sense a rotation of the magnetic field in response to rotation of the driving shaft;
- and
- a magneto-static shield mounted to the magnet and arranged to surround the magnet and sensor element, and configured to rotate with the driving shaft.
Dependencies are inferred from the claim text.