Invention Grant
- Patent Title: Ring element for a rotor of an electric motor
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Application No.: US14232872Application Date: 2012-06-26
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Publication No.: US09853515B2Publication Date: 2017-12-26
- Inventor: Josef Effler , Christoph Wagner , Joachim Schadow , Juergen Hein , Joerg Goehner
- Applicant: Josef Effler , Christoph Wagner , Joachim Schadow , Juergen Hein , Joerg Goehner
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Maginot, Moore & Beck LLP
- Priority: DE102011079332 20110718
- International Application: PCT/EP2012/062333 WO 20120626
- International Announcement: WO2013/010757 WO 20130124
- Main IPC: H02K3/30
- IPC: H02K3/30 ; H02K3/50 ; H02K7/14 ; H02K3/51 ; H02K3/38

Abstract:
A ring element includes a convex, in particular rounded, surface element for arrangement on at least one axial end region of a winding section of an electric motor rotor. The surface element provides a minimum radius curvature for supporting an inner layer of a rotor winding on the winding head. An insulating lamination element for an electric motor rotor onto which a rotor winding is intended to be wound includes the ring element. An electric motor, in particular a universal motor, includes a rotor with a rotor winding having the ring element. An electric machine tool, in particular a handheld electric machine tool such as an angle grinder, a drill, a saw or the like, includes the electric motor.
Public/Granted literature
- US20140139053A1 RING ELEMENT FOR A ROTOR OF AN ELECTRIC MOTOR Public/Granted day:2014-05-22
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