Air blowing structure for vehicle air conditioning

Abstract

An air blowing structure for vehicle air conditioning is provided in a cylindrical body having an inlet opening in a cabin. The air blowing structure includes a rotary member and fins. The rotary member is rotatably supported on an inner surface of the cylindrical body. Each fin has two flat surfaces facing in a rotating direction of the rotary member. Each fin has a base end connected to an outer peripheral portion of the rotary member. The fins radially extend toward the inlet. The fins are connected to the outer peripheral portion of the rotary member in a tiltable manner in the rotating direction of the rotary member. Slide shafts project from leading ends of side portions of the fins. Slide shafts are slidably engaged with slide grooves extending in the inner surface of the cylindrical body along the side portions of the fins.

1 . An air blowing structure for vehicle air conditioning provided in a cylindrical body that has an inlet opening in a cabin of a vehicle and that communicates with a duct extending from an air conditioning unit of the vehicle, the air blowing structure comprising:
 a rotary member rotatably supported on an inner surface of the cylindrical body; and   a plurality of fins each having two flat surfaces facing in a rotating direction of the rotary member and having a base end connected to an outer peripheral portion of the rotary member,   wherein the plurality of fins radially extend toward the inlet,   wherein the plurality of fins are connected to the outer peripheral portion of the rotary member in a manner such as to be tiltable in the rotating direction of the rotary member, and   wherein slide shafts project from leading ends of side portions of the plurality of fins, and are slidably engaged with slide grooves extending in the inner surface of the cylindrical body along the side portions of the plurality of fins.   
     
     
         2 . The air blowing structure for vehicle air conditioning according to  claim 1 , wherein an angle at which the plurality of fins tilt to one side or another side in the rotating direction of the rotary member is less than 90 degrees. 
     
     
         3 . The air blowing structure for vehicle air conditioning according to  claim 1 , wherein two contact portions spaced in the rotating direction of the rotary member are provided in the outer peripheral portion of the rotary member, and a stopper attached to the inner surface of the cylindrical body is provided between the contact portions. 
     
     
         4 . The air blowing structure for vehicle air conditioning according to  claim 1 ,
 wherein each of the flat surfaces of the plurality of fins comprises a projecting portion, and   wherein, when adjacent fins among the plurality of fins overlap with each other, the base end and the projecting portion of one of the adjacent fins come into contact with either of the flat surfaces of another fin of the adjacent fins.   
     
     
         5 . The air blowing structure for vehicle air conditioning according to  claim 2 , wherein two contact portions spaced in the rotating direction of the rotary member are provided in the outer peripheral portion of the rotary member, and a stopper attached to the inner surface of the cylindrical body is provided between the contact portions. 
     
     
         6 . The air blowing structure for vehicle air conditioning according to  claim 2 ,
 wherein each of the flat surfaces of the plurality of fins comprises a projecting portion, and   wherein, when adjacent fins among the plurality of fins overlap with each other, the base end and the projecting portion of one of the adjacent fins come into contact with either of the flat surfaces of another fin of the adjacent fins.   
     
     
         7 . The air blowing structure for vehicle air conditioning according to  claim 3 ,
 wherein each of the flat surfaces of the plurality of fins comprises a projecting portion, and   wherein, when adjacent fins among the plurality of fins overlap with each other, the base end and the projecting portion of one of the adjacent fins come into contact with either of the flat surfaces of another fin of the adjacent fins.   
     
     
         8 . The air blowing structure for vehicle air conditioning according to  claim 5 ,
 wherein each of the flat surfaces of the plurality of fins comprises a projecting portion, and   wherein, when adjacent fins among the plurality of fins overlap with each other, the base end and the projecting portion of one of the adjacent fins come into contact with either of the flat surfaces of another fin of the adjacent fins.