Vehicle HVAC door with enclosed motor

Details Vehicle HVAC door with enclosed motor Vehicle HVAC door with enclosed motor

2006-02-21

2006-02-21

Duda, Rina (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

C318S696000, C318S449000, C062S278000

Reexamination Certificate

active

07002316

ABSTRACT:
A drive for a vehicle HVAC vent door includes a drive transmission mounted within the shaft for the vent door. The drive transmission is of the sort commonly known as a wave drive transmission, wherein a lobed member is driven by an oblong drive shaft. The lobed member selectively drives an externally threaded flex ring that in turn engages an internally toothed drive transmission member. The internally toothed drive transmission member drives the shaft for the vent door. In this fashion, a relatively small motor is provided which has sufficient power to drive the vent door. Further, an electrical connection for supplying control signals is mounted at one end of the shaft and has a non-symmetrical configuration such that the motor and vent door will be properly orientated and relative to the vehicle.

REFERENCES:
patent: 3404835 (1968-10-01), Rodgers
patent: 4815658 (1989-03-01), Hidemitsu et al.
patent: 5284025 (1994-02-01), Kajitani et al.
patent: 5517101 (1996-05-01), Sakai et al.
patent: 5529112 (1996-06-01), King et al.
patent: 6048263 (2000-04-01), Uchida et al.
patent: 6230795 (2001-05-01), Tsunooka et al.
“Product Briefs,” aei May, 2003.
Article: “Miniature Servo Drive System for Air Condition Controls and Test Rig for Dynamic Testing of Small Torques”, AM AA2003 Artikel.

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