Mix door structure
A mix door structure has drive force for opening and closing a slide door part of a middle slide door unit among multiple slide door units arranged side by side transmitted by an input shaft. The input shaft includes an inner input shaft part (input gear and inner input shaft) which is rotationally supported on two sides at both end portions thereof on bearings provided to a pair of door attachment wall parts of the middle slide door unit and an outer input shaft part (outer input shaft and rotary member) which is rotationally supported on one side on a first shaft hole provided in an outer door attachment wall part of an outermost slide door unit. The inner and outer input shaft parts are coupled to each other through a coupling hole in the inner input shaft part.
1. A mix door structure, comprising:
a first outer slide door unit;
a second outer slide door unit; and
a middle slide door unit disposed between the first outer slide door unit and the second outer slide door unit;
wherein each of the first outer slide door unit and the second outer slide door unit includes:
a pair of openings to blow air;
a door to adjust the amount of opening of the pair of openings;
an output gear;
an output shaft supporting the output gear and configured for connection to an external rotation device;
a rack part to drive the door by meshing with the output gear;
wherein the middle slide door unit includes:
a pair of openings to blow air;
a door to adjust the amount of opening of the pair of openings of the middle slide door unit;
an input gear;
an inner input shaft supporting the input gear; and
a rack part to drive the door by meshing with the input gear;
wherein the inner input shaft has at opposite ends thereof coupling holes provided to face the first outer slide door unit and the second outer slide door unit, respectively,
wherein the first outer slide door unit and the second outer slide door unit are configured such that one outer input shaft is detachably attached to either the first outer slide door unit or the second outer slide door unit, the outer input shaft having at one end thereof a rotary member rotatably supported on the first outer slide door unit or the second outer slide door unit and at another end thereof an engagement part engageable with the coupling holes of the inner input shaft of the middle slide door unit,
wherein, when the outer input shaft is attached to the first outer slide door unit, the rotary member of the outer input shaft is directly rotatably supported on the first outer slide door unit and the engagement part is engaged in the coupling hole of the inner input shaft facing the first outer slide door unit, and the external rotation device is disposed at a side of the first outer slide door unit and connected to the rotary member,
wherein, when the outer input shaft is attached to the second outer slide door unit, the rotary member of the outer input shaft is directly rotatably supported on the second outer slide door unit and the engagement part is engaged in the coupling hole of the inner input shaft facing the second outer slide door unit, and the external rotation device is disposed at a side of the second outer slide door unit and connected to the rotary member.
2. The mixed door structure of claim 1 , wherein;
when the outer input shaft is attached to the first outer slide door unit, the rotary member of the outer input shaft is directly rotatably supported on the first outer slide door unit by a first shaft support on the first outer slide door unit, and
when the outer input shaft is attached to the second outer slide door unit, the rotary member of the outer input shaft is directly rotatably supported on the second outer slide door unit by a second shaft support on the second outer slide door unit.