Title:
SHUTTER DEVICE
Document Type and Number:
Japanese Patent JP3964317
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a shutter device capable of making a winding diameter smaller in the case that a shutter curtain is wound on a winding shaft.
SOLUTION: The shutter curtain 3 wound on the winding shaft 6 by inside winding or outside winding is formed by continuously arranging a large number of slats 10 in the direction of the opening and closing movement of the curtain 3, there are a slat 20 having a large size W1 in the width in the direction of the opening and closing movement of the curtain 3 and a slat 30 having a small size W2 in the width in each slat 10, and the slat 30 forms a part of the curtain 3 nearer to the winding shaft 6 than the slat 20. Ends 30A and 30B of the slat 30 wound up on the winding shaft 6 in advance form a polygonal angular part to complete the winding, and since the slat 30 with a small size in the width is wound up so that it is in a state to almost adhere to the winding shaft 6, the winding diameter is getting small.
Inventors:
Ishikura, Norio
Nishiura, Masaaki
Ohashi, Toshiyuki
Nishiura, Masaaki
Ohashi, Toshiyuki
Application Number:
JP2002000364043
Publication Date:
June 01, 2007
Filing Date:
December 16, 2002
Export Citation:
Assignee:
BUNKA SHUTTER CO LTD
International Classes:
E06B9/15; E06B9/171; E06B9/11; E06B9/17; (IPC1-7): E06B9/15; E06B9/171
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