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    • 51. 发明授权
    • Electromagnetic coupling with permanent magnets
    • 与永磁电磁耦合
    • US3730317A
    • 1973-05-01
    • US3730317D
    • 1971-07-21
    • EATON CORP
    • JAESCHKE R
    • F16D27/06F16D48/06
    • F16D27/06F16D48/064F16D2027/002F16D2027/008F16D2500/5114F16D2500/70418
    • A magnetic coupling comprises an armature assembly having an armature plate formed of a material which is readily magnetizable to a first polarity and a second polarity opposite from the first polarity, a pole assembly, a coil energizable to magnetize the armature plate to its first polarity and to its second polarity, a power supply for energizing the coil and means for energizing the coil to a first polarity upon deenergization of the power supply. Energization of the coil to the first polarity effects magnetization of the armature plate to its first polarity to effect engagement of the armature plate and friction material disposed on the pole assembly. Energization of the coil to a second polarity is operable to effect demagnetization of the armature plate to its second polarity to effect disengagement of the armature plate and the friction material of the pole assembly. The means for energizing the coil to its first polarity upon deenergization of the power supply includes an energy storage means which provides a fail-safe mode of operation to insure that the armature plate engages with the friction material of the pole assembly upon deenergization of the coil by the power supply.
    • 磁耦合器包括电枢组件,该电枢组件具有由容易磁化成第一极性和与第一极性相反的第二极性的材料形成的电枢板,极组件,可激励以将衔铁板磁化成其第一极性的线圈, 到其第二极性,用于激励线圈的电源和用于在电源断电时将线圈激励到第一极性的装置。 将线圈通电为第一极性,从而使衔铁板的磁化强度达到其第一极性,从而实现电枢板和设置在极组件上的摩擦材料的接合。 将线圈通电为第二极性可操作地实现衔铁板到其第二极性的退磁,以实现电枢板和极组件的摩擦材料的分离。 用于在电源断电时将线圈激励到其第一极性的装置包括能量存储装置,其提供故障安全操作模式,以确保当线圈断电时电枢板与极组件的摩擦材料接合 由电源供应。