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Invention Patent
JP2021191319A 内視鏡 审中-公开

内視鏡
Abstract:
【課題】線膨張負荷環境下において、外装部材に内部部材よりも大きな線膨張が発生しても、内部部材への負荷を低減させることができる構成を具備する内視鏡を提供する。 【解決手段】複数の外装部材51〜53と、一部が外装部材53に固定され、外装部材52,53と異なる線膨張係数を有する材料から構成された内部部材60と、外装部材51内側に突出する突起部51tと、突起部51tに対向する対向部位62dと、突起部51tと対向部位62dとの間に介挿され、外装部材51〜53及び内部部材60への熱の付与により内部部材60に対する外装部材51〜53の長手方向Nへの相対的な伸びまたは相対的な縮みによって長手方向Nに生じる力により変形する弾性部材80と、を具備する。 【選択図】図2
Abstract(English):

To provide an endoscope having a configuration that can reduce load on an inner member even when linear expansion larger than the inner member occurs in an exterior member under a linear expansion load environment.SOLUTION: An endoscope includes: a plurality of exterior members 51-53; an inner member 60 partially fixed to the exterior member 53, and made of a material having a linear expansion coefficient different from that of the outer members 52 and 53; a projection part 51t projecting to the inside of the exterior member 51; an opposite portion 62d opposing to the projection part 51t; and an elastic member 80 inserted between the projection part 51t and the opposite portion 62d, and deformed by force generated in a longitudinal direction N due to relative elongation or relative shrinkage in the longitudinal direction N of the exterior members 51-53 to the inner member 60 by applying heat to the exterior members 51-53 and the inner member 60.SELECTED DRAWING: Figure 2

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