Title:
直流小型モータ用整流子材料及び刷子材料、クラッド複合材並びにそれを使用した直流小型モータ
Document Type and Number:
Japanese Patent JP4252582
Kind Code:
B2
Abstract:
An object of the present invention is to provide a commutator or brush material for a small electric DC motor which enables a lengthened operating life of a spindle motor for a DVD controlled using a pulse current. A commutator material for a small electric DC motor in accordance with the present invention is characterized by being composed of 6.0 to 10.0 wt % of Cu, 1.0 to 5.0 wt % of ZnO, and a balance of Ag and in that Cu metal particles and ZnO particles are dispersed in an AgCu matrix. A brush material for a small electric DC motor in accordance with the present invention is characterized by being composed of 0.1 to 5.0 wt % of MgO and a balance of Ag and in that MgO particles are dispersed in an Ag matrix, or is characterized by being composed of 5.0 to 15.0 wt % of Ni and a balance of Pt and in that Ni is dissolved in a Pt matrix.
Inventors:
Keiji Nakamura
Takahata Makoto
Masahiro Takahashi
Shuichi Kubota
Norio Asada
Toshiya Yamamoto
Takahata Makoto
Masahiro Takahashi
Shuichi Kubota
Norio Asada
Toshiya Yamamoto
Application Number:
JP2006108533A
Publication Date:
April 08, 2009
Filing Date:
April 11, 2006
Export Citation:
Assignee:
Mabuchi Motor Co., Ltd.
Tanaka Kikinzoku Kogyo Co., Ltd.
Tanaka Kikinzoku Kogyo Co., Ltd.
International Classes:
C22C5/06; C22C5/04; C22C32/00; H01R39/04; H01R39/20; H02K13/00
Attorney, Agent or Firm:
Patent business corporation Tanaka, Okazaki and Associates