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    • 5. 发明授权
    • Linear synchronous motor
    • 线性同步电机
    • US07915767B2
    • 2011-03-29
    • US12635981
    • 2009-12-11
    • Yuqi TangTakashi MatsushitaSatoshi Sugita
    • Yuqi TangTakashi MatsushitaSatoshi Sugita
    • H02K41/02
    • H02K41/03
    • A linear synchronous motor, in which one or more intermediate annular magnetic pole portions and yoke assemblies can be connected easily while positioning the intermediate annular magnetic pole portions. A fitting concave portion that is opened in an axial direction and a direction away from a direct drive shaft is formed in each connected portion of the intermediate annular magnetic pole portions. A plurality of fitting grooves are formed on an outer peripheral surface of a pair of magnetic cylindrical members at a plurality of portions facing the plurality of intermediate annular magnetic pole portions. The intermediate annular magnetic pole portions are fixedly positioned between the pair of magnetic cylindrical members by fitting a peripheral portion defining the fitting concave portion of the intermediate annular magnetic pole portion into the corresponding fitting groove of the magnetic cylindrical member.
    • 一种线性同步电动机,其中一个或多个中间环形磁极部分和轭组件可以容易地连接,同时定位中间环形磁极部分。 在中间环形磁极部分的每个连接部分中形成有在轴向上开放并且远离直接驱动轴的方向的嵌合凹部。 在面对多个中间环形磁极部的多个部分的一对磁性圆柱形部件的外周面上形成有多个嵌合槽。 通过将限定中间环形磁极部分的嵌合凹部的周边部分嵌合到磁性圆柱形部件的相应的装配槽中,中间环形磁极部分固定地位于一对磁性圆柱形部件之间。
    • 10. 发明授权
    • Apparatus for preventing heat damage in an electromagnetic clutch
    • 用于防止电磁离合器中的热损伤的装置
    • US4896756A
    • 1990-01-30
    • US242307
    • 1988-09-09
    • Takashi Matsushita
    • Takashi Matsushita
    • F16D27/112F16D27/10
    • F16D27/112
    • An electromagnetic clutch according to the invention includes a first rotatable member having an axial end plate of magnetic material and a second rotatable member. The second rotatable member includes a drive shaft, and a hub mounted on an end of the shaft. An annular armature plate is disposed on an outer peripheral portion of the hub facing the axial end plate of the first rotatable member with an axial air gap therebetween. An electromagnetic device is disposed within the first rotatable member for attracting the armature plate to the axial end surface of the first rotatable member. The armature plate is elastically connected with the hub by a plurality of leaf springs and is made of materials with a low Curie point. Meltable elements are disposed on the armature plate to define the axial air gap between the first rotatable member and the armature plate. When the elements are heated sufficiently due to frictional heat, they melt and the air gap between the first rotatable member and the armature plate increases to a point where the clutch cannot be engaged. If the temperature exceeds the Curie point, the magnetic property of the armature decreases rapidly and the armature separates from the rotor and remains separated until the meltable elements are replaced.