| 摘要 |
PROBLEM TO BE SOLVED: To provide a sliding door threshold displaying such an effect that dust is not accumulated. SOLUTION: The upper surface 20a fixes a plate-like sponge member 20 having flexibility flush with the upper surface 1b of a groove-like rail 1 along a groove and is provided in the inside of the groove provided in the groove-like rail 1 mounted on a sliding door threshold. A sash sheave mounted on the lower surface of a sliding door 2 remains upward of the sponge member 20, and a part applying load of the sliding door 2 through the sash sheave thereto is curved downward along the lower surface of the sash sheave. The sash sheave does not remain upward of the sponge member 20 by movement of the sash sheave, and when the load of the sliding door 2 is not applied thereto, the upper surface 20a is so set that it is restored to a state flush with the upper surface 1b of the groove-like rail 1 from a state curved downward.
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