CARBON BRUSH OF MOTOR AND METHOD FOR PRODUCING THE SAME

Title:

CARBON BRUSH OF MOTOR AND METHOD FOR PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2007/055164

Kind Code:

A1

Abstract:

A brush is formed to exhibit a good commutation state even when it is employed in a high voltage-compatible motor. The brush (B) is produced by press molding and sintering a material of natural graphite mixed with artificial graphite, wherein the quantity of artificial graphite mixed with natural graphite is at least 20-80 wt%, preferably 50 wt%. When that brush is built in a high voltage-compatible motor (1), friction speed of the brush (B) and a commutator (4) is suppressed under wide temperature conditions from normal temperature atmosphere to high temperature atmosphere and a good commutation state is ensured.

More Like This:

JPH0677472	[Name of invention] Holding structure of brush holder
JPH01259742	COMMUTATOR FOR SMALL-SIZED MOTOR

Inventors:

YANAGIZAWA IWAO (JP)

Application Number:

PCT/JP2006/322082

Publication Date:

May 18, 2007

Filing Date:

November 06, 2006

Export Citation:

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Assignee:

MITSUBA CORP (JP)
KUNIMITSU CARBON IND CO LTD (JP)
YANAGIZAWA IWAO (JP)

International Classes:

H02K13/00; H01R39/26; H01R43/12; H02K15/02

Foreign References:

JPH03103054A	1991-04-30
JP2005102491A	2005-04-14
JP2004014294A	2004-01-15

Attorney, Agent or Firm:

HIROSE, Tetsuo (2-5-6 Nishikanda, Chiyoda-k, Tokyo 65, JP)

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