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    • 88. 发明公开
    • Electric motor and hermetic compressor
    • Elektromotor und hermetischer Kompressor
    • EP1384893A3
    • 2007-02-21
    • EP03016419.8
    • 2003-07-21
    • KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    • Kimura, KazuyaGennami, HiroyukiKuroki, KazuhiroSuitou, KenFukutani, Yoshikazu
    • F04C23/00F04C18/02F04C29/04H02K1/18
    • F04C28/28F04C18/0215F04C23/008F04C29/045H02K1/146H02K1/185H02K5/04H02K7/14
    • An electric motor includes a housing (11a) and a circular stator (12). The housing has an inner circumferential surface (25a). The housing also has a first predetermined thermal expansion coefficient. The housing further has an elastic part (25d). The stator core (16) is pressed to an inside of the housing by tight fit, The stator core has an outer circumferential surface (16c). The stator core also has a second predetermined thermal expansion coefficient that is different from the first predetermined thermal expansion coefficient. A void (32) is defined between the inner circumferential surface and the outer circumferential surface so as to prevent the inner and the outer circumferential surfaces from contacting each other in a circular region. When the housing and the stator core expand or shrink so as to tightly fit each other due to a differential between the first and second predetermined thermal expansion coefficients, the elastic part (25d) corresponding to the void (32) is elastically deformed.
    • 电动机包括壳体(11a)和圆形定子(12)。 壳体具有内周面(25a)。 壳体还具有第一预定的热膨胀系数。 壳体还具有弹性部分(25d)。 定子铁心(16)通过紧密配合被压到壳体的内部。定子铁芯具有外圆周表面(16c)。 定子芯还具有与第一预定热膨胀系数不同的第二预定热膨胀系数。 在内周面和外周面之间形成有空隙(32),以防止内周面和外周面在圆形区域中彼此接触。 当壳体和定子芯由于第一和第二预定热膨胀系数之间的差异而膨胀或收缩以彼此紧密配合时,对应于空隙(32)的弹性部分(25d)弹性变形。