公开(公告)号：US20180183293A1

公开(公告)日：2018-06-28

申请号：US15400501

申请日：2017-01-06

Applicant: BorgWarner Inc.

Inventor： Kirk E. Neet ,  George Chen ,  Mark Teng ,  Yijun Wang

IPC: H02K5/10 ,  H02K9/02 ,  H02K5/20 ,  H02K5/14 ,  H02K7/08 ,  H02K11/00

Abstract: An alternator includes an external ignition protection system including a shaft rotatable about an axis. The shaft includes a slip ring end. A slip ring support is mounted at the slip ring end of the shaft. A slip ring cover is mounted to the shaft. The slip ring cover defines a slip ring cavity. A first slip ring end housing supports the slip ring cover. The first slip ring end housing includes a first plurality of openings. A second slip ring end housing is arranged axially outwardly of the slip ring end. The second slip ring end housing includes a second plurality of openings. The first slip ring end housing, slip ring cover and the second slip ring end housing define a labyrinth flow path that provides an air flow through the slip ring cavity and prevents passage of ignition inducing elements from the alternator.

公开(公告)号：US10541581B2

公开(公告)日：2020-01-21

申请号：US15400501

申请日：2017-01-06

Applicant: BorgWarner Inc.

Inventor： Kirk E. Neet ,  George Chen ,  Mark Teng ,  Yijun Wang

IPC: H02K5/10 ,  H02K9/02 ,  H02K5/20 ,  H02K5/14 ,  H02K7/108 ,  H02K11/00 ,  H01R39/36 ,  H02K13/00 ,  H01R39/08 ,  H02K13/02 ,  H01R43/10

Abstract: An alternator includes an external ignition protection system including a shaft rotatable about an axis. The shaft includes a slip ring end. A slip ring support is mounted at the slip ring end of the shaft. A slip ring cover is mounted to the shaft. The slip ring cover defines a slip ring cavity. A first slip ring end housing supports the slip ring cover. The first slip ring end housing includes a first plurality of openings. A second slip ring end housing is arranged axially outwardly of the slip ring end. The second slip ring end housing includes a second plurality of openings. The first slip ring end housing, slip ring cover and the second slip ring end housing define a labyrinth flow path that provides an air flow through the slip ring cavity and prevents passage of ignition inducing elements from the alternator.