Vehicle HVAC door with enclosed motor
AssigneeAir International (US) Inc.
InventorRichard Hoyle
Life of this patent
Estimating the term…
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.
Claims22
A vehicle HVAC system comprising:
- a first flow line selectively communicating with a pair of branched flow lines;
- a vent door pivoting to selectively communicate said first flow line with said pair of branched flow lines, said vent door having a pivoting shaft in a door body;
- and
- a motor for driving said vent door to pivot to selectively communicate said branch flow lines to said one flow line, said motor being housed within said shaft.
A vehicle HVAC system comprising:
- a door pivoting to selectively communicate a first flow line with a pair of branched flow lines, said door having a pivoting shaft in a door body;
- a motor housed within said shaft for driving said door to pivot,
- a control attached to said motor for sending control signals to said motor;
- and
- at least one sensor mounted within said shaft for providing feedback of a position of said shaft to said control.
Dependencies are inferred from the claim text.