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    • 27. 发明申请
    • CARBON COMMUTATOR
    • 碳交换机
    • WO9957797A8
    • 2000-01-27
    • PCT/US9909579
    • 1999-04-30
    • MCCORD WINN TEXTRON INC
    • ZIEGLER WILLIAM EBAUER WILLIAM A
    • H01R39/04H01R39/06H01R39/16H01R43/06H02K13/00H02K15/02H02K39/08H02K15/00H02K15/12
    • H01R39/06H01R39/045Y10S29/012Y10S29/029Y10S228/903Y10T29/49011Y10T29/49144
    • A barrel or face-type carbon-segment commutator assembly (12c) for an electric motor includes a segmented commutating surface (22c) defined by an annular array of commutator sector (14c, 18c), each sector including a carbon segment (18c) connected to a respective conductor section (14c). To form the assembly, an annular carbon cylinder (20c) is overmolded onto a copper blank (70c) and radial grooves (54c) are formed in an inside surface of the carbon cylinder opposite the communicating surface. An insulator hub (24c) is overmolded onto the carbon cylinder and into the radial grooves. Slots (56c) are then machined inward from the communicating surface to the insulator-filled grooves to isolate the commutator sectors. The remaining insulator material mechanically interlocks the sectors. In other embodiments, the commutator assembly (100) is formed by soldering a carbon cylinder (142) to conductor sections (102) before overmolding a hub (112) and cutting slots (108) to isolate commutator sectors (106).
    • 一种用于电动机的桶形或面型碳分段换向器组件(12c)包括由换向器扇形(14c,18c)的环形阵列限定的分段换向表面(22c),每个扇区包括连接的碳段(18c) 到相应的导体部分(14c)。 为了形成组件,将环形碳筒(20c)包覆成型到铜坯(70c)上,并且在与连通表面相对的碳瓶的内表面上形成径向槽(54c)。 绝缘体轮毂(24c)被包覆成型到碳筒上并进入径向槽。 然后将槽(56c)从连通表面向内加工到绝缘体填充的沟槽以隔离换向器扇区。 剩余的绝缘体材料机械地互锁扇区。 在其他实施例中,换向器组件(100)通过在包覆模制轮毂(112)和切割槽(108)之前将碳圆柱体(142)焊接到导体部分(102)而形成,以隔离换向器扇区(106)。