Air conditioning register

An air conditioning register, comprising:

• a retainer which is formed with an air passage having a blowout port at a downstream end in a flowing direction of air conditioning air;
• a plurality of fins arranged in a direction intersecting with the flowing direction in the air passage, tiltably supported in the retainer respectively by fin shafts, and having connecting pins respectively at positions deviated from the fin shafts;
• a connecting plate configured to connect the plurality of fins at the connecting pins;
• a drive mechanism configured to change a position of the connecting plate in the flowing direction, wherein:
• the connecting pins of the fins are engaged with cam grooves provided in the connecting plate so that all the fins are connected to the connecting plate;
• each of the cam grooves has a parallel blowing zone for bring adjacent fins into a parallel blowing mode in which the adjacent fins are parallel to each other, and has a diffusion blowing zone for bringing adjacent fins into a diffusion blowing mode in which the interval between upstream ends of the adjacent fins is narrower than the interval between downstream ends;
• and
• the drive mechanism is provided with an allowing part which allows the connecting plate to move in the arrangement direction of the fins when an operation of tilting the fins is performed with the fin shafts as a fulcrum, while maintaining where each connecting pin is positioned in each of the cam grooves in the parallel blowing zone when each connecting pin is in the parallel blowing zone,
• the drive mechanism includes:
• an operation knob configured to change a blowing mode of the plurality of fins between the parallel blowing mode and the diffusion blowing mode by changing a position of the connecting plate in the flowing direction;
• and a pair of gears arranged along the arrangement direction of the fins, meshing with each other and rotating in opposite directions in accordance with the operation of the operation knob,
• the allowing part includes:
• a pair of guiding holes respectively extending in the arrangement direction of the fins in the connecting plate;
• and a pair of guiding projections provided at positions deviated from rotation centers of the gears and engaged with the guiding holes, and
• the allowing part regulates the connecting plate from moving in the arranging direction of the fins, only when the plurality of fins are brought into the diffusion blowing mode by the operation knob, by positioning both the guiding projections in the position most distant from the other guiding hole in the guiding holes.