Provided is a relative position detection device that is able to easily and accurately detect the amount of relative displacement between a permanent magnet part and a magnetic sensor over a wide range, and also able to increase the resolution in the amount of relative displacement, with suppression of a size increase of the permanent magnet part. The relative position detection device includes a permanent magnet part and a magnetic sensor that are arranged so as to be displaceable relative to each other. The magnetic sensor has an upper limit value and a lower limit value of a detectable magnetic flux density. The permanent magnet part includes at least two magnetic pole parts. Each of the two magnetic pole parts is magnetized in a facing direction in which the permanent magnet part and the magnetic sensor face each other. The permanent magnet part has a middle portion including a boundary between the two magnetic pole parts and two non-middle portions adjacent to the respective sides of the middle portion in a relative displacement direction. The permanent magnet part is configured such that the middle portion and, of the two non-middle portions, at least the non-middle portion capable of facing the magnetic sensor satisfy at least one of a requirement concerning a cross-sectional area and a requirement concerning a distance to the magnetic sensor.
RELATIVE POSITION DETECTION DEVICE, ACCELERATOR POSITION SENSOR AND VEHICLE
VORRICHTUNG ZUR BESTIMMUNG DER RELATIVEN POSITION, GASPEDALPOSITIONSSENSOR UND FAHRZEUG
DISPOSITIF DE DÉTECTION DE POSITION RELATIVE, CAPTEUR DE POSITION D'ACCÉLÉRATEUR ET VÉHICULE
2020-01-29
Patent
Electronic Resource
English
RELATIVE POSITION DETECTION DEVICE, ACCELERATOR POSITION SENSOR AND VEHICLE
European Patent Office | 2017
|RELATIVE POSITION DETECTING DEVICE, ACCELERATOR POSITION SENSOR AND VEHICLE
European Patent Office | 2018
|