| 摘要 |
PROBLEM TO BE SOLVED: To smoothen the opening and closing of a glass door without using any rail by fitting an L-shaped aluminum angle to a key-shaped part provided on an aluminum sash frame base to form a reverse groove. SOLUTION: Key-shaped worked parts 6, 7 are provided on the inside and outside of a frame base 1 for aluminum sash door. Curved parts 11, 12 are provided on the part of sash rollers 8, 9 of an aluminum sash door so that the aluminum sash door is never slipped out from aluminum angles 2-5. Further, projections to be caught by the key-shaped parts 6, 7 of the frame base for aluminum sash door 1 are provided on the four L-shaped aluminum angles 2-5. The aluminum angles 2-5 are fitted to the key-shaped parts and fixed to the frame base 1 by small screws to form one reverse groove, which is substituted for a rail. According to this, lateral glass doors can be smoothly opened and closed without using any rail.
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