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    • 4. 发明授权
    • Sealing device and rotation detector
    • 密封装置和旋转检测器
    • US07318589B2
    • 2008-01-15
    • US10945429
    • 2004-09-21
    • Takeshi KageyamaKatsura KoyagiMasahiro Inoue
    • Takeshi KageyamaKatsura KoyagiMasahiro Inoue
    • F16J15/32
    • F16C41/007F16C33/78F16C2326/02F16J15/326G01P3/443G01P3/487
    • A pulser ring and a second seal ring are separately formed. When a multipolar magnetic rotor of the pulser ring is bonded to an outer circumferential face of an outer cylindrical portion of an annular core portion, the multipolar magnetic rotor is opposed to a magnetic sensor in the radial direction. Due to the above structure, the multipolar magnetic rotor can be strongly supported by an outer cylindrical portion of the annular core portion. Therefore, even when a rotary centrifugal force is given to the multipolar magnetic rotor, it can not be swung in the radial direction. Accordingly, an interval of the multipolar magnetic rotor and the magnetic sensor in the radial direction, which are opposed to each other, can be maintained constant irrespective of an intensity of the centrifugal force.
    • 分别形成脉冲发生器环和第二密封环。 当脉冲发生器环的多极磁转子结合到环形芯部的外圆筒部的外周面时,多极磁转子与径向的磁传感器相对。 由于上述结构,多极磁转子可以被环形芯部的外圆筒部牢固地支撑。 因此,即使向多极磁性转子施加旋转离心力,也不能向径向摆动。 因此,不管离心力如何,多极磁转子和磁传感器在径向方向上彼此相对的间隔可以保持恒定。