Air passage changeover device having film screen
AssigneeDenso Corporation
InventorsTakahiro Tokunaga, Koji Ito, Atsushi Kosaka
Life of this patent
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Abstract
An air passage in an air-conditioner such as an automotive air-conditioner is selectively opened or closed by moving a position of an opening formed on a film screen relative to the air passage. The film screen is coupled to a pair of rollers, forming a curved path between the pair of rollers guided by a guiding surface. The film screen is formed by laminating a first film made of resin and a second film made of woven fabric having a higher elongation rate for a temperature rise than the first film. The second film is positioned inside of the curved path to prevent a shape of the roller or the guiding surface from being easily transferred to the film screen.
Claims5
An air passage changeover device comprising:
- a pair of rollers rotatably supported in a casing that forms an air passage therein;
- a film screen coupled to the pair of rollers, forming a curved path between the pair of rollers, the film screen having an opening that selectively opens or closes the air passage by driving the film screen, wherein:
- the film screen comprises a first film and a second film, both laminated on each other, the second film having a higher elongation rate for a temperature rise than the first film;
- and
- the film screen is disposed so that the second film is positioned inside of the curved path.
Dependencies are inferred from the claim text.