Rotational angle detector
AssigneeKabushiki Kaisha Tokai Rika Denki Seisakusho
InventorsKazuhito Matsui, Masakata Kanbe
Life of this patent
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Abstract
A detector for detecting a rotational angle of a gearshift lever. The detector includes a magnet that forms a magnetic flux in a predetermined direction along its surface. A magnetic resistance sensor generates a detection signal corresponding to the direction of the magnetic flux. The detected object is connected to the magnet or the magnetic resistance sensor. The magnet and the magnetic resistance sensor are rotated relatively to each other to generate the detection signal and obtain the rotational angle of the detected object. The magnetic resistance sensor is separated from an axis of rotation of the sensor or the magnet.
Claims11
A detector for detecting a rotational angle of a detected object, the detector comprising:
- a magnet having a surface, wherein the magnet forms a magnetic flux in a predetermined direction along the surface;
- a magnetic resistance sensor for generating a detection signal corresponding to the direction of the magnetic flux, wherein the detected object is connected to one of the magnet and the magnetic resistance sensor, and the magnet and the magnetic resistance sensor are rotated relative to each other to generate the detection signal and obtain the rotational angle of the detected object, the magnetic resistance sensor being spaced from an axis of rotation of one of the sensor and the magnet.
A detector for detecting a rotational angle of a detected object, the detector comprising:
- an annular magnet for forming a magnetic flux parallel to a predetermined radial direction of the magnet;
- a magnetic resistance sensor for generating a detection signal corresponding to the direction of the magnetic flux,
- wherein the detected object is connected to one of the magnet and the magnetic resistance sensor, and the magnet and the magnetic resistance sensor are rotated relatively to each other to generate the detection signal and obtain the rotational angle of the detected object, the magnetic resistance sensor being separated from an axis of rotation of one of the sensor and the magnet.
A detector for detecting a rotational angle of a detected object, the detector comprising:
- an annular magnet for forming a magnetic flux parallel to a predetermined radial direction of the magnet, wherein the magnet includes a first magnetic pole portion and a second magnetic pole portion located on the outer side of the first magnetic portion, the first magnetic pole portion having a north pole and a south pole, and the second magnetic pole portion having a south pole located in correspondence with the north pole of the first magnetic pole portion and a north pole located in correspondence with the south pole of the first magnetic pole portion;
- a magnetic resistance sensor for generating a detection signal corresponding to the direction of the magnetic flux, wherein the detected object is connected to one of the magnet and the magnetic resistance sensor, and the magnet and the magnetic resistance sensor are rotated relatively to each other to generate the detection signal and obtain the rotational angle of the detected object, the magnetic resistance sensor being separated from an axis of rotation of one of the sensor and the magnet.
Dependencies are inferred from the claim text.