External rotor motor

Details External rotor motor External rotor motor

2006-08-15

2006-08-15

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S091000

Reexamination Certificate

active

07091639

ABSTRACT:
An external rotor motor, suitable for driving a cooling fan, has a structure which facilitates automated assembly with proper angular registration. The rotor has a central shaft which is rotatably supported inside a bearing support tube having a tapered outer surface formed with a circumferential stop and longitudinal guide grooves. An inner stator structure is located radially between the bearing support tube and the rotor. The stator has an internal recess containing a securing ring or disk with inwardly extending tabs. During assembly of the inner stator onto the bearing support tube, the tabs slide in the guide grooves, then bend to form barbs which engage into the outer surface of the bearing support tube, thereby securing the stator on the bearing support tube in a predefined angular orientation. The circumferential stop assures insertion of the bearing support tube to the correct depth.

REFERENCES:
patent: 2522941 (1950-09-01), Gillen
patent: 4128778 (1978-12-01), Merkle et al.
patent: 4377762 (1983-03-01), Tatsumi et al.
patent: 4585967 (1986-04-01), Mayer et al.
patent: 4682065 (1987-07-01), English et al.
patent: 5013957 (1991-05-01), Wrobel
patent: 5170086 (1992-12-01), Wrobel et al.
patent: 5343104 (1994-08-01), Takahashi et al.
patent: 5363003 (1994-11-01), Harada et al.
patent: 5436519 (1995-07-01), Takahashi et al.
patent: 5831359 (1998-11-01), Jeske
patent: 6265802 (2001-07-01), Getschmann
patent: 6507135 (2003-01-01), Winkler
patent: 92 05 930.9 (1992-12-01), None
Ebm-Papst Automotive and Drives (UK) Ltd., “Welcome,” sales literature describing Series 250, Series 400F and Series 400 (3 pages), downloaded Nov. 21, 2003 from WWW.PAPSTPLC.COM.

Affiliated with

Also associated with

Rating

External rotor motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with External rotor motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and External rotor motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3622280