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 ▼

1. A door mechanism of an automotive air conditioning device including two upstream side air passages, a downstream side air passage, a door having a predetermined size and arranged to selectively lead the air flow from one of the two upstream side air passages to said downstream side air passage an

1. A door mechanism of an automotive air conditioning device including two upstream side air passages, a downstream side air passage, a door having a predetermined size and arranged to selectively lead the air flow from one of the two upstream side air passages to said downstream side air passage and movement limiting structures arranged at upstream and downstream sides of the door, a door mechanism of said automotive air conditioning device, said door mechanism being characterized in that said door comprises a door proper which is arranged between the movement limiting structures and extends in a direction to shut the air flow from said upstream side air passages and a seal member which is bonded to one surface of said door proper, said door proper being capable of sliding in a direction to shut 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, 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 sliding mechanism comprising cam grooves which are formed on both side surfaces of said case which has said air passages defined therein and a 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 said seal member being pressed against said contacting member when said door proper comes to said terminal end portion.