초록 ▼

In switching of opening and closing air passage opening portions of an automotive air conditioning apparatus, a circumference one end of the film member is secured to one end in a circumferential direction of the rotary door by a pin member, and the other end in a circumferential direction of the fi

In switching of opening and closing air passage opening portions of an automotive air conditioning apparatus, a circumference one end of the film member is secured to one end in a circumferential direction of the rotary door by a pin member, and the other end in a circumferential direction of the film member is set to be a free end which is movable with reference to a slide wall portion of the rotary door. The variation in dimension of the film member or the case side is absorbed by movement of the free end.

대표청구항 ▼

[ What is claimed is:] [1.] An air passage switching device comprising:a case for forming an air passage having an air passage opening portion;a rotary door rotatably disposed within said case and having a circular circumferential wall to which a door vent opening is opened; anda film member dispose

[ What is claimed is:] [1.] An air passage switching device comprising:a case for forming an air passage having an air passage opening portion;a rotary door rotatably disposed within said case and having a circular circumferential wall to which a door vent opening is opened; anda film member disposed on an outer peripheral side of said circumference wall of said rotary door, said film member having a flexibility for being rotated with said rotary door, said film member having a film opening portion which always communicates with said door vent opening; wherein,said rotary door is rotated so as to selectively communicate or interrupt between said film opening portion and said air passage opening portion,at least one end of both ends in a peripheral direction of said film member is a free end movable in a peripheral direction against said rotary door.