| 摘要 |
A louvre, for use in a louvre shutter and having a generally hollow elongated aerofoil shape, defined by upper and under exterior walls, intermediate support walls between the upper and under exterior walls, for holding the shape of the upper and under exterior walls, an end closure member for each end having a body with a profile generally corresponding to the aerofoil shape defined by the upper and under exterior louvre walls, and a pivot axle extending from an outside surface for mounting the louvre rotatably, a plurality of frictional fingers formed on the inside surface formed of the body and located so as to inter-engage with portions of the support walls of the louvre. Also disclosed is a shutter comprised of such louvres, and having side frames between which such louvres are mounted in parallel spaced apart location. Also disclosed is a frictional braking system engaging at least one of the louvres and mounted in one of the side frames, to control movement of the louvres and hold them in a preset position.
|
