FRICTION DAMPER

摘要

PROBLEM TO BE SOLVED: To protect a slide material from weather and droppings without lowering workability in a maintenance inspection.SOLUTION: A friction damper 1 according to the present invention is interposed between a brace material 2a serving as one region extending from a column-beam junction (not shown) and a brace 2b serving as the other region extending from another column-beam junction located diagonally to the former column-beam junction, and comprises: a slide plate 3 formed on the brace material 2a; a friction plate 4 coupled to the brace material 2b; a sheet material 15; and a pressing member 16 pressing the sheet material 15 while guiding the sheet material 15 and preventing the sheet material 15 from floating. The sheet material 15 can cover an exposed region of the slide material 5 when the friction plate 4 is located at a home position by attaching one edge portion of the sheet material 15 to an end portion of the friction plate 4 and attaching the other edge portion thereof to a portion near an end portion of the slide material 5, and the sheet material 15 fractures near nut openings 30 in response to a motion of the friction plate 4 along an extension direction thereof.