| 摘要 |
The present invention relates to a roller shutter in which a slat connection structure is very flexible so as to reduce manufacturing and maintenance costs. The roller shutter of the present invention comprises: a plurality of slats continuously connected in the vertical direction; a winding unit for winding or unwinding the plurality of slats in the vertical direction; a shutter box arranged above a door frame of a building; and a guide frame for guiding the edges of the plurality of slats. The winding unit is arranged inside the shutter box. The plurality of slats are connected in the vertical direction such that the slats can be pivoted. One end of each slat has a hook, and the hook is curved with a predetermined radius of curvature. The other end of each slat has an accommodation groove curved at a predetermined radius of curvature. The hook of one slat is accommodated in the accommodation groove of another slat adjacent to said slat such that the hook is movable in the circumferential direction, thus enabling said slat and the other slat adjacent thereto in the vertical direction to pivot relative to one another. The hook has an inner surface and an outer surface. The accommodation groove has a first inner surface, a second inner surface, a closed surface, and an opening. The radius of the second inner surface of the accommodation groove is larger than that of the first inner surface. The first inner surface extends in the circumferential direction so as to form a cylinder. The inner surface of the hook and the first inner surface of the accommodation groove have the same radius, and the outer surface of the hook and the second inner surface of the accommodation groove have the same radius. |
| 主权项 |
1. A roller shutter, comprising:
a plurality of slats which are continuously connected in upward and downward directions; a winding unit which is configured to wind or unwind the plurality of the slats in upward and downward directions; a shutter box which is disposed at the top of a door frame of a building; and a guide frame which is configured to guide the edges of the plurality of the slat, wherein the winding unit is installed inside of the shutter box, and the plurality of the slats are pivotally connected in upward and downward directions, and a hook part is formed at an end of each slat, and the hook part is curved with a predetermined curvature radius, and an accommodation groove part is curved with a predetermined curvature radius at the other end of each slat, and the hook part of the slat of one side is movably accommodated in a circumferential direction in the accommodation groove part of the slat of the other side which is adjacent to the hook part of the slat of one side, and the slat of one side and the slat of the other side which are neighboring in the upward and downward directions perform a relative pivoting operation, and the hook part includes an inner surface and an outer surface, and the accommodation groove part includes a first inner surface, a second inner surface, a closed surface and an opening, and the second inner surface of the accommodation groove part has a radius larger than the first inner surface, and the first inner surface extends in a circumferential direction to form a cylindrical part, and the inner surface of the hook part and the first inner surface of the accommodation groove part have same radiuses, and the outer surface of the accommodation groove part and the second inner surface of the accommodation groove part have same radiuses, and a hollow part having a circular cross section is formed inside of the cylindrical part, and the hollow part is formed at a portion eccentric from the center of the cylindrical part, so the cylindrical part has a thickness which is not uniform in a circumferential direction. |
