An air conditioner ECU transmits a communication message in a format for controlling a stepper motor. Since a stepper motor and a DC motor are controlled by a communication message in respective predetermined formats, the DC motor cannot be controlled with the communication message transmitted by the air conditioner ECU. Therefore, the sub ECU relays the communication message transmitted by the air conditioner ECU and drives the actuator. The sub ECU converts the communication message transmitted by the air conditioner ECU into control information corresponding to a predetermined format of each actuator and drives each actuator based on the converted control information.

The present invention relates to an air conditioner for a vehicle, which can improve a gear ratio of a power transmission means in order to operate a sliding door with more torque. The air conditioner for a vehicle includes: an air-conditioning case having a heat exchanger; a first door and a second door disposed inside the air-conditioning case to adjust the degree of opening of an air passageway; a first driving part for operating the first door; a power transmission part connected to the first driving part; a second driving part for operating the second door; and a third driving part for connecting the power transmission part with the second driving part.

A heating, ventilation, and air conditioning (HVAC) system including an HVAC assembly, a set of pins, mode doors, a mode plate, an actuator, and an HVAC control module. The mode doors control airflow from the HVAC assembly. A position of each mode door is controlled by a corresponding pin of the set of pins. The mode plate includes (i) a set of grooves, (ii) a first adjustment path and (iii) a second adjustment path. The first adjustment path causes a first pin of the set of pins to move toward a center. The second adjustment path causes the first pin to move away from the center of the mode plate. An HVAC module selectively actuates the actuator to causes the mode plate to rotate in at least one of a passive direction and the active direction in response to receiving a mode request.

A vehicular air conditioning system and a control method thereof are provided. The vehicular air conditioning system includes: a plurality of mode doors configured to switch an air discharge mode in a passenger compartment, the mode doors including a defogging door, a vent door and a floor door; and a mode door air pressure reduction part configured to temporarily reduce an air pressure acting on at least one of the mode doors when the air discharge mode is switched.

An air handling system for a heating, ventilation, and air conditioning system of a motor vehicle having a passenger compartment, includes a main housing having a first mode door rotatably disposed therein and a second mode door rotatably disposed therein. An actuator drives the first mode door. A control mechanism is disposed within the housing and is configured to control a simultaneous rotational position of each of the first mode door and the second mode door.

A ventilation module for a vehicle having a housing including a flap hingedly secured along an inner edge to the housing to extend across its open interior. The flap includes side edges and an interconnecting outer edge which contact, in a closed flap condition, support locations configured along the housing to define its open interior. One or more fingers extend from at least one of the side and outer edges of the flap so that the fingers abut standoff locations of the housing located in proximity to the support locations. Upon a sufficient positive air pressure condition created within the passenger compartment which overcomes a holding force exerted by the fingers against said stand-offs, the flap is allowed to open in a controlled fashion to vent to the exterior the excess air pressure, until reclosing upon achieving an air equilibrium condition.

An air-handling system includes a housing having a passageway formed therethrough. A diverter is rotatably coupled to the housing, and includes a door disposed in the passageway for selectively opening and closing the passageway. A shaft of the door extends through a first opening of the housing, and extends outwardly therefrom, defining a first axis. A lever is coupled to the shaft of the diverter. A flexible tab is disposed axially outwardly of the lever and is positionable in a first position and a second position. In the first position, a distal end of the tab is positioned radially inwardly of an outer circumferential surface of the lever, and in the second position the distal end of the tab is positioned radially outwardly of the outer circumferential surface of the lever. The distal end is moveable about a second axis, parallel to the first axis.

A vehicle air handling system includes a user input interface, air duct housing, first and second panel duct doors, at least one air blower, and a first panel actuation assembly. The air duct housing has an air inlet, and first and second panel ducts. The first and second panel duct doors are disposed to selectively open and close the first and second panel ducts, respectively. Air is drawn into the air duct housing via the air inlet and conveyed toward the panel ducts. The first panel actuation assembly is operatively coupled to the first and second panel duct doors to simultaneously control positions in response to operation of the user input interface between a plurality of settings. The positions of the first and second panel duct doors include at least one setting in which different airflow volumes are passed by the first and second panel duct doors.

A kinematics assembly may include a control lever configured to drive a plurality of air flaps, a cam disc, and a bearing plate. The cam disc may include a bearing pin and the bearing plate may have a bearing opening in which the cam disc is mounted via the bearing pin. At least one groove may be disposed at the bearing opening. The bearing pin may include a tongue structured in a complementary manner to the at least one groove. The cam disc may be rotationally fixed to the bearing plate in a predefined mounting position in which the tongue is engaged in the at least one groove. The cam disc may be rotatably mounted on the bearing plate in an operating position in which the cam disc is displaced in an axial direction such that the tongue is not engaged in the at least one groove.

Provided is a vehicle air-conditioning device in which a lever (7) for turning a damper is rotatably fitted and supported on a unit casing (2), wherein one of a support part (13) on the unit casing (2) side and a fitting part (8) on the lever side is provided with an elastically deformable fitting claw (27), while the other of the support part (13) and the fitting part (8) is provided with a fitting hole (24), into which the fitting claw (27) is fitted and engaged, and a bearing boss part (23) and a fitting shaft part (25), which are rotatably fitted together with a bearing clearance between them, are provided on the outer periphery of the fitting claw (27) and the fitting hole (24).