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Patent Searching and Data


Title:
ADJUSTING DEVICE FOR AN ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2010/083814
Kind Code:
A3
Abstract:
The invention relates to a device for reversing the direction of rotation and/or adjusting the carbon brushes (7) for a reversible electric motor, in particular for an electric hand tool, having a socket (5) and having a carrier (6) pivotally supported at the socket (5), on which brush holders (9) for the carbon brushes (7) slipping on the collector of the electric motor are optionally disposed. The electric motor can be actuated by means of power electronics (10), such as a pulse-width controller, a phase controlled modulator, a phase segment modulator, or the like. The power electronics (10) are disposed at the socket (5) and/or at the carrier (6). The device further has fixed contacts and switching contacts operating in alternating contact for reversing the direction of rotation of the electric motor when the carrier is pivoted. The fixed contact can be designed as a U-shaped bent contact arm and two mating contacts can be disposed as switching contacts, such that the fixed contact exerts a force against the mating contacts on both sides.

Inventors:
FUCHS ANDREAS (CH)
FIEDERER KLAUS (DE)
GIRSBERGER LARS (CH)
VILLANOVA EMILIANO (CH)
Application Number:
DE2010/000060
Publication Date:
December 23, 2010
Filing Date:
January 22, 2010
Export Citation:
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Assignee:
MARQUARDT GMBH (DE)
FUCHS ANDREAS (CH)
FIEDERER KLAUS (DE)
GIRSBERGER LARS (CH)
VILLANOVA EMILIANO (CH)
International Classes:
H02K5/14; H01R39/38; H02K11/00; H02K23/18; H02K23/66
Domestic Patent References:
WO2005078907A12005-08-25
Foreign References:
EP0271714A21988-06-22
EP1447900A22004-08-18
EP0235735A11987-09-09
DE19736300A11998-04-02
EP1742332A22007-01-10
DE19938342A12000-02-17
US6124652A2000-09-26
US3440465A1969-04-22
Attorney, Agent or Firm:
OTTEN, Herbert et al. (Ravensburg/Berg, DE)
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