| 摘要 |
PROBLEM TO BE SOLVED: To provide a louver lattice allowing louver blades to be easily and positively opened/closed by handle rotating operation from the indoor side. SOLUTION: The lattice is structured to transmit pressing force to a rotating shaft 8 through a crank arm 10, a rotating cam 9, and the like to open/close the louver blade 7. The crank arm is fitted with springs 14 to energize in a direction of opening the louver blades. An operating mechanism is provided with a rotating handle, a worm gear comprising a receiving gear and a working gear rotated interlocked with the handle, and a wire drum rotated in a direction of pulling or returning an inner wire 13, interlocked with the gear. Further, guide rollers 16 for guiding the inner wire are rotatably journaled to the rotating shafts of one or more rotating cams near the crank arm to which one end of the inner wire is connected, and the upper part of the guide roller is covered with a fall preventing cover 17 to prevent the inner wire from coming off the guide roller. COPYRIGHT: (C)2005,JPO&NCIPI
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