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    • 3. 发明申请
    • Method of making an armature
    • 制作电枢的方法
    • US20060254046A1
    • 2006-11-16
    • US11483322
    • 2006-07-07
    • Hung DuBrandon VerbruggeJoshua WestMichael SellRichard WalterDavid SmithEarl OrttJohn StoneHoward White
    • Hung DuBrandon VerbruggeJoshua WestMichael SellRichard WalterDavid SmithEarl OrttJohn StoneHoward White
    • H01R43/10H01F7/06
    • H02K1/30H01R43/10H02K1/32H02K3/12H02K3/30H02K3/345H02K3/46H02K3/48H02K3/487H02K3/50H02K3/51H02K7/04H02K9/06H02K9/20H02K9/22H02K13/006H02K13/04H02K15/0056H02K15/02H02K15/12H02K15/165Y10T29/49Y10T29/49009Y10T29/49011Y10T29/49012Y10T29/49071Y10T29/49073Y10T29/53148
    • An armature for an electric motor has a lamination stack on a shaft with a commutator mounted on one end of the shaft. Magnet wires wound in slots in the lamination stack, the commutator and armature shaft are at least partially encapsulated in a first plastic, such as by insert molding. The commutator has a commutator ring divided into a plurality of segments with slots between the segments that are filled with a second plastic when the commutator is made by molding a core of the second plastic, such as phenolic, in the commutator ring before the commutator ring is mounted on the armature shaft. Where the commutator is a tang type commutator, the commutator ring has notches at axial ends of the slots which is filled with the second plastic when the second plastic is molded. The mold used to mold the first plastic includes projections that extend between the tangs of the commutator and against the notches at axial ends of the slots of the commuter. The notches filled with the second plastic and the projections of the mold prevent plastic flash from getting into the slots of the commutator ring. In a stuffer type commutator, the commutator has inserts of insulative material extending part way into the slots of the commutator from an inner end of the commutator. The mold used to mold the first plastic has a portion that seals around the inner end of the commutator ring above the inserts to prevent plastic flash from getting into the slots between the segments of the commutator ring.
    • 用于电动机的电枢在轴上具有叠片,其上安装有在轴的一端上的换向器。 缠绕在叠片堆叠槽中的磁线,换向器和电枢轴至少部分地封装在第一塑料中,例如通过嵌入成型。 换向器具有一个换向器环,当换向器通过在换向器环之前在换向器环中模制第二塑料(例如酚醛树脂)的芯而制成换向器 安装在电枢轴上。 在换向器是脚式换向器的情况下,当第二塑料被模制时,换向器环在槽的轴向端部处有凹槽,当第二塑料被填充时,填充有第二塑料。 用于模制第一塑料的模具包括在换向器的脚之间延伸并且在通勤槽的轴向端部处的凹口之间延伸的突起。 填充有第二塑料的凹口和模具的突起防止塑料闪光进入换向器环的槽中。 在填充型换向器中,换向器具有从换向器的内端部分地延伸到换向器的槽中的绝缘材料的插入件。 用于模制第一塑料的模具具有围绕插入件上方的换向器环的内端密封的部分,以防止塑料闪光进入换向器环的段之间的槽中。