Buffer structure for heat dissipating fan

Details Buffer structure for heat dissipating fan Buffer structure for heat dissipating fan

2007-08-21

2009-10-06

Le, Dang D (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S090000

Reexamination Certificate

active

07598644

ABSTRACT:
A heat dissipating fan includes a housing (201), a stator (21), a rotor (27) and a buffer structure. The housing defines an accommodating space (202) and includes a hollow tube (201b). The tube encloses first and second bearings (22, 23) therein. The stator is arranged in the accommodating space and around the tube. The rotor has a shaft rotatably disposed in the first and the second bearings. The buffer structure includes at least a pair of magnets (25, 26) received in the tube and located between the first and second bearings. Repellent force is generated between the magnets, thereby preventing at least one of the first and the second bearing from being damaged by an accidental force acting thereon.

REFERENCES:
patent: 4655616 (1987-04-01), Ducan
patent: 5982066 (1999-11-01), Marracino et al.
patent: 5997183 (1999-12-01), Horng
patent: 6023113 (2000-02-01), Otsuka
patent: 6420810 (2002-07-01), Jeong
patent: 7105967 (2006-09-01), Huang et al.
patent: 7462950 (2008-12-01), Hu
patent: 2006/0267435 (2006-11-01), Lin et al.

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