Patent ID: 6031226
Filing Date: 2000-02-29
Classification: B60H,G05G

Abstract:
An integrated ventilation mode and temperature control apparatus for use with a passenger compartment climate control system of a motor vehicle, the apparatus comprising:a housing;a movable temperature output control member at said housing for driving a temperature blend door that controls the output temperature of a blended air stream in the climate control system;a movable ventilation mode output control member at said housing for driving a ventilation mode damper that controls the source and routing of said blended air stream in the climate control system;a temperature input control member at said housing movable in response to motion of an operatively associated manually operable temperature control knob spaced apart from said housing;a ventilation mode input control member at said housing movable in response to motion of an operatively associated manually operable ventilation mode control knob spaced apart from said housing;a first drive unit in said housing providing a first drive connection between the ventilation mode input control member and the ventilation mode output control member for producing movement of said ventilation mode output control member in response to movement of said ventilation mode input control member; and,a second drive unit in said housing providing a second drive connection between the temperature input control member and the temperature output control member for producing a predetermined generally non-linear relationship between movement of the temperature input control member and movement of the temperature output control member to produce a generally linear relationship between the movement of the manually operable temperature control knob and the temperature of the air stream throughout a major portion of the movement of the temperature control knob.