| 摘要 |
PURPOSE: A guidance block for the blind is provided to guide the blind due to guide projections on the surface thereof and to prevent bonding agent from being released from an upper plate and a lower plate. CONSTITUTION: A guidance block for the blind comprises an upper plate(1), a lower plate, and a piece hole(105). The upper plate and the lower plate are molded of synthetic resin selected from polyurethanes or PVC. A guidance projection is formed on the surface of the upper plate. A hexagonal projection line(103) is formed on the bottom of the upper plate from a rim(102) to the entire inner surface. The piece hole is formed on the hexagonal projection line. An opening part is filled with bonding agent made of cement. |
