Patent ID: 8480462
Filing Date: 2013-07-09
Classification: B60H,F24F

Abstract:
1. A blowing-mode door applied to a vehicle air-conditioning apparatus in which an air channel is partitioned into a plurality of channels by a partition plate and temperature adjustment can be performed independently for each of the air channels, the blowing-mode door comprising: a rotating shaft having a predetermined length; and a pair of left and right plate-like doors that are molded integrally with the rotating shaft, with a gap for preventing interference with the partition plate therebetween, wherein the rotating shaft is formed in a cross sectional form having ribs around the shaft, the ribs extending in the direction parallel to or perpendicular to the plate surfaces of the plate-like doors or in both directions; a plurality of circular ribs each of which connects the ribs together are provided on the rotating shaft having the cross sectional form, at a plurality of locations with a predetermined pitch; and the plurality of circular ribs comprise: a first circular rib which is located entirely within an area corresponding to the gap in the axial direction of the rotating shaft, and a pair of second circular ribs wherein one of said pair is disposed at each side of the first circular rib in the axial direction of the rotating shaft, and joined with the left and right plate-like doors respectively the partition plate has a semicircular notch at the periphery thereof, the semicircular notch has a T-shaped cross-sectional rib along a semicircular periphery thereof, and the axial thickness of the circular ribs are larger than the thickness of the entire partition plate except for the T-shaped cross-sectional rib.