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    • 4. 发明申请
    • ELECTRIC COMPRESSOR AND ASSEMBLY METHOD THEREOF
    • 电动压缩机及其装配方法
    • US20120282123A1
    • 2012-11-08
    • US13519926
    • 2010-08-26
    • Yuki IchiseTakayuki HagitaMasayuki IshikawaTakeshi HiranoTakayuki Watanabe
    • Yuki IchiseTakayuki HagitaMasayuki IshikawaTakeshi HiranoTakayuki Watanabe
    • F04D25/06B23P15/00
    • F04B39/14F04C18/0215F04C23/008F04C29/0078F04C2230/60H02K1/28H02K5/1732H02K7/083H02K15/0012Y10T29/49245
    • A main-bearing outer diameter of an electric motor is made smaller than a rotor outer diameter without causing a drop in production efficiency, and the ease of performing a shrink-fitting step is also enhanced by making it possible to mount a rotor to a main shaft in an early stage. A bearing journal portion (14b) of a main shaft (14) of an electric motor is formed in a shape into which an inner race (18b) of a main bearing (18) can be press-fitted from both sides in the axial direction thereof, and, in addition, an outer diameter of the bearing journal portion (14b) is made larger than an outer diameter of a rotor press-fitting portion (14a), whereas a bearing bore portion (5a) of a partition member (5) is formed in a shape into which an outer race (18a) can be press-fitted from both sides in the axial direction thereof. It is preferable that a space (S) into which a press-fitting tool for press-fitting the main bearing (18) can be inserted be provided between the rotor press-fitting portion (14a) of the main shaft (14) and the bearing journal portion (14b) thereof.
    • 电动机的主轴承外径小于转子外径而不会导致生产效率下降,并且通过使转子能够安装到主体上也可以提高进行收缩装配步骤的容易性 轴早期阶段。 电动机的主轴(14)的轴承轴颈部(14b)形成为主轴承(18)的内圈(18b)能够沿轴向从两侧压配合成的形状 并且另外,使轴承轴颈部(14b)的外径大于转子压配部(14a)的外径,而分隔部件(5)的轴承孔部(5a) )形成为能够沿其轴向方向从两侧压配合外圈(18a)的形状。 优选的是,可以插入用于压配主轴承(18)的压配工具的空间(S),该​​主体轴(14)的转子压配合部(14a)和 轴承轴颈部分(14b)。