| 摘要 |
A profile assembly is disclosed for the wedge-sealing of a sheet of flexible material, especially a window shade. It comprises a set of male and female extruded plastic profiles. The female profile is U-shaped and defines an open housing, one of its legs has, at its free end, a resilient sealing lip turned into the housing while the other leg has, also at its free end, a first wedging lip. The male profile is L-shaped and has a wedging branch and a base branch, the two making between them an inner angle of less than 90 DEG . Furthermore, the base branch includes, at the end away from the wedging branch, an upright arm having a second wedging lip on its face that looks toward the first wedging lip. The sealing lip, when unstressed, and the first wedging lip are spaced apart a predetermined distance, this length and this distance being selected to allow, in use, with the wedging branch inserted into the housing and with an edge of the window shade slid between the sealing lip and the wedging branch, the second lip to be brought first against the first lip, then to be moved over the first lip thereby causing the shade to be sealed pressed against the sealing lip by the wedging branch, and thereafter the second lip to fall behind the first lip and be snapped into interlocking engagement therewith within the housing while the shade remains sealed pressed against the sealing lip by the wedging branch.
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