Throttle device
AssigneeToyo Denso Kabushiki Kaisha
InventorsShoji Kishi, Toshiya Yoshida
Life of this patent
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Abstract
A grip, a magnet 140, and a substrate 150 are included. The grip is rotatable between positions where a throttle is fully closed and a position where the throttle is fully open with a rotating shaft as a center. The magnet 140 rotates integrally with the grip. The substrate 150 includes a plurality of Hall elements 165 and 175, and is fixed to face the magnet 140. The plurality of Hall elements 165 and 175 are disposed in such a way that magnetic flux densities different from each other are respectively applied to the plurality of Hall elements 165 and 175 when an external magnetic field acts in a state where the grip is located in the position where the throttle is fully closed.
Claims9
A throttle device comprising:
- a rotating body that is rotatable between a first position and a second position with a rotating shaft as a center;
- a magnet that rotates integrally with the rotating body;
- and
- a substrate that includes a plurality of magnetic sensors and that is fixed to face the magnet,
- wherein:
- the plurality of magnetic sensors are offset in a first direction intersecting with a second direction of a line of magnetic force of a magnetic field of the magnet in such a way that magnetic flux densities different from each other are respectively applied to the plurality of magnetic sensors when an external magnetic field acts in a state in which the rotating body is located in the first position;
- disposing the plurality of magnetic sensors in such a way that magnetic flux densities different from each other are respectively applied to the plurality of magnetic sensors is mutually offsetting the plurality of magnetic sensors in two directions in such a way that magnetic fields having magnitudes different from each other are applied from the magnet to the plurality of magnetic sensors, the two directions being a first direction of a line of magnetic force of a magnetic field and a second direction intersecting the first direction;
- and
- offsetting the plurality of magnetic sensors in the first direction is disposing the plurality of magnetic sensors in positions different from each other on a plane of the substrate, and offsetting the plurality of magnetic sensors in the second direction is separately disposing the plurality of magnetic sensors on a front surface and a reverse surface of the substrate so that disposing the plurality of magnetic sensors in positions different from each other includes separating the plurality of magnetic sensors by using a thickness of the substrate.
Dependencies are inferred from the claim text.