초록 ▼

A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded

A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded to the door proper 12 is pressed against a contacting member 13 only when the door proper 12 assumes its close position. Smoothed operation of the door proper 12 is achieved with a compact construction of a unit, and sealing and temperature controlling performance is increased.

대표청구항 ▼

[ What is claimed is:] [1.]1. A door mechanism of an automotive air conditioning device including one upstream air passage, two downstream air passages branched from said upstream side passage,a door having a predetermined size and arranged to select one of the two downstream air passages for feedin

[ What is claimed is:] [1.]1. A door mechanism of an automotive air conditioning device including one upstream air passage, two downstream air passages branched from said upstream side passage,a door having a predetermined size and arranged to select one of the two downstream air passages for feeding an air flow from said upstream air passage to a selected downstream air passage or arranged to distribute the air flow to both the downstream air passages at a given distribution ratio,movement limiting structures arranged at upstream and downstream sides of the door near the door, and a door mechanism comprising:a door proper which forms part of said door, said door proper being arranged between the movement limiting structures and to extend in a direction to shut off the air flow from the upstream air passage, anda seal member which is bonded to one surface of said door proper, said door proper being capable of sliding in a direction to shut off the air flow with the aid of a sliding mechanism, said sliding mechanism having:a gear meshed with a toothed portion formed on said door proper, so that when, upon operation of a driving device, the gear is driven, said door proper is slid in the sliding direction and when the door proper comes to a terminal end of the sliding path, said door proper is moved in a direction angled to said sliding direction, so that said seal member is contacted to and pressed against a contacting member formed on a case which has said air passages defined therein, said seal having a flat surface which is contactable with the contacting member; and wherein said sliding mechanism comprises:cam grooves which are formed on both side surfaces of said case which has said air passages defined therein, anda plurality of guide members provided on end portions of said door proper and slidably received in said cam grooves, each of said cam grooves having at a terminal end portion thereof a portion by which an associated guide member is guided in a direction angled to the sliding direction of the door proper, and whereinsaid seal member is pressed against said contacting member when said door proper comes to said terminal end portion.