Therefore, when the top of the floorboard is stepped on, the floorboard returns to the non-recurved state, by which one end of the clamp rubs against the holes of the board, and makes a noise.
そのため、床板の上端を踏むときは床板の反曲がもどるから、手違いかすがいの一端と板の穴の両側とが摩擦をおこし音を発するのである。