公开(公告)号：US4035908A

公开(公告)日：1977-07-19

申请号：US717589

申请日：1976-08-25

Applicant: Hirohisa Ishi ,  Koichiro Hukui ,  Norikatsu Inoue

Inventor： Hirohisa Ishi ,  Koichiro Hukui ,  Norikatsu Inoue

IPC: H01R39/04 ,  H01R43/06 ,  H02K13/00 ,  H01R43/08

CPC classification number: H01R43/06 ,  H01R39/04 ,  Y10T29/49011 ,  Y10T29/49812

Abstract: In manufacturing an electric motor commutator which includes a cylindrical insulator having an axial bore for receiving the shaft of an electric motor, and a plurality of segments of commutator metal, such as, copper, extending about the outer circumferential surface of the insulator and being spaced apart by axially extending slots opening radially outward from the insulator between confronting surfaces of adjacent segments; the circumferential surfaces of the segments are shielded, as by plating the same with a metal other than the commutator metal, such as, silver, nickel, tin or zinc, or by coating such circumferential surfaces with a paint, whereupon, the resulting commutator assembly is oxidized so that only the confronting surfaces of the segments between which the slots are defined are covered with insulating layers of copper oxide, and then the shielding, along with any oxide that may have been formed thereon, is removed from the circumferential surfaces of the segments for exposing the copper or other commutator metal at such circumferential surfaces. Preferably, the commutator segments are formed by cutting the slots in a sleeve of the commutator metal which extends around the cylindrical insulator, with the cutting of the slots being effected after the outer circumferential surface of the sleeve has had the shielding, that is, the metal plating or paint, applied thereto.

Abstract translation: 在制造电动机换向器的过程中，该电动机换向器包括具有用于容纳电动机的轴的轴向孔的圆柱形绝缘体，以及围绕绝缘体的外周表面延伸并且间隔开的多个换向器金属（例如铜） 除了通过在相邻段的相对表面之间从绝缘体径向向外开口的轴向延伸的槽; 通过用除了换向器金属（例如银，镍，锡或锌）之外的金属电镀它们，或者通过用涂料涂覆这种圆周表面来对该段的圆周表面进行屏蔽，由此产生的换向器组件 被氧化，使得只有其间限定的区段的相对表面被氧化铜的绝缘层覆盖，然后将屏蔽物以及可能形成在其上的任何氧化物从其周边表面上移除 用于在这种圆周表面处露出铜或其它换向器金属的段。 优选地，换向器段通过切割在整流子金属的套筒内的槽形成，该套管围绕圆柱形绝缘体延伸，在套筒的外圆周表面已经具有屏蔽之后，槽的切割被实现，即， 金属电镀或涂料。