Title:
SLIDING CONTACT MATERIAL FOR MOTOR BRUSH, MOTOR BRUSH, AND DIRECT CURRENT MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/120635
Kind Code:
A1
Abstract:
The present invention is a sliding contact material for a motor brush, the sliding contact material being obtained by using pure Ag as a matrix and dispersing ZnO particles and Ta2O5 particles in the matrix, wherein the content of the ZnO particles is 0.1-12 mass%, and the content of the Ta2O5 particles is 0.1-6.0 mass%. A sliding contact material according to the present invention is suitable as a constituent material of a motor brush of a small-sized direct current motor, has favorable mechanical wear resistance and spark resistance, and also has excellent low noise properties. Moreover, the present invention is a sliding contact material that can be substituted for a Ag-Pd-based alloy of which the cost is high due to a recent surge in palladium prices.
Inventors:
HASHIMOTO YASUHIRO (JP)
UZAWA HIDEYUKI (JP)
NAKAMURA KEIJI (JP)
YOSHIMURA KAZUTOSHI (JP)
KAKIUCHI SHUNPEI (JP)
SATO KENTARO (JP)
HORIUCHI YOSHINORI (JP)
IDO RYUTA (JP)
ASADA TAKAO (JP)
TAKAHASHI MASAHIRO (JP)
UZAWA HIDEYUKI (JP)
NAKAMURA KEIJI (JP)
YOSHIMURA KAZUTOSHI (JP)
KAKIUCHI SHUNPEI (JP)
SATO KENTARO (JP)
HORIUCHI YOSHINORI (JP)
IDO RYUTA (JP)
ASADA TAKAO (JP)
TAKAHASHI MASAHIRO (JP)
Application Number:
PCT/JP2022/047317
Publication Date:
June 29, 2023
Filing Date:
December 22, 2022
Export Citation:
Assignee:
MABUCHI MOTOR CO (JP)
TANAKA PRECIOUS METAL IND (JP)
TANAKA PRECIOUS METAL IND (JP)
International Classes:
H02K13/00; B22F1/00; B22F7/00; C22C5/06; H01R39/20
Foreign References:
| JP2010280971A | 2010-12-16 | |||
| JP2005154838A | 2005-06-16 | |||
| JPH09171735A | 1997-06-30 |
Attorney, Agent or Firm:
ORIGINATE IP (JP)
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