DAMPER AND HANDLING DEVICE

PROBLEM TO BE SOLVED: To perform a stable braking against an object to be braked by a load having a hysteresis characteristic while absorbing oscillation of the object to be braked that reciprocates and moves along a shaft center.SOLUTION: A damper 9 has a sliding member 4, rectangular column-like elastic bodies 3 and a cylindrical case 2 storing these elements. A push rod 7 of an object to be braked has side surfaces 740 inclined in respect to a shaft center O. The sliding member 4 slidably supports the side surfaces 740 of the object to be braked in a sliding area 42 and elastically deforms so as to cause the sliding area 42 to be displaced in a direction where it approaches the shaft center O of the object to be braked and its opposite direction. The elastic bodies 3 are compressed by a case inner wall surface 22 and the sliding member 4 at corner parts contacted to the case inner wall surface 22 for every equal angle so as to bias the sliding member 4 against the shaft center O of the object to be braked in such a way that the sliding area 42 is pressed against the side surfaces 740 of the object to be braked. A space 36B formed between any one side surface 35B of the elastic bodies 3 and the case inner wall surface 22 is positioned at a side where a spacing between the shaft center O of the object to be braked and the case inner wall surface 22 is held under oscillation of the object to be braked.SELECTED DRAWING: Figure 7 【課題】軸心に沿って往復移動する制動対象の揺動を吸収しつつ、ヒステリシス特性を有する負荷で制動対象を安定に制動する。【解決手段】ダンパ９は、摺動部材４、角柱状弾性体３及びこれらを収容する筒状ケース２を有し、制動対象のプッシュロッド７は、軸心Ｏに対して傾斜した側面７４０を有する。摺動部材４は、制動対象の側面７４０を摺動領域４２で摺動可能に支持し、制動対象の軸心Ｏに近づく方向及びその反対方向に摺動領域４２が変位するように弾性変形する。弾性体３は、ケース内壁面２２に略等角度おきに接触するコーナ部でケース内壁面２２と摺動部材４とにより圧縮され、制動対象の側面７４０に摺動領域４２を押圧するように摺動部材４を制動対象の軸心Ｏ側に付勢する。弾性体３のいずれか１つの側面３５Ｂとケース内壁面２２との間に形成される空間３６Ｂが、制動対象の軸心Ｏとケース内壁面２２との間隔が制動対象の揺動で狭まる側に位置する。【選択図】図７