HOSE

• Main Author: FUKUSHIMA YOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 14.10.2021
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a hose capable of increasing a filling rate of an intermediate rubber layer in a clearance between steel filaments of a reinforcement layer.SOLUTION: A hose of the present invention comprises an intermediate rubber layer 13, and a pair of reinforcement layers 12 adjacent to inner and outer peripheral sides of the intermediate rubber layer, respectively. At least one of the pair of reinforcement layers is made of a steel cord 120 in which a plurality of steel filaments 121 are twisted together. The inequality, (A/B)×C≥1.11 (mm), is satisfied when A (mm) represents a clearance width that is a distance between contact points of a circumscribed circle of the steel cord and the pair of steel filaments positioned on the outermost periphery side of the plurality of steel filaments and brought into contact with each other, B (mm) represents a clearance depth that is a distance from a common external tangent of the pair of steel filaments to a contact point between the pair of steel filaments, and C (mm) represents the thickness of the intermediate rubber layer.SELECTED DRAWING: Figure 3 【課題】補強層のスチールフィラメントどうしの間の隙間での中間ゴム層の充填率を向上できる、ホースを提供する。【解決手段】本発明のホースは、中間ゴム層１３と、中間ゴム層の内周側及び外周側にそれぞれ隣接する一対の補強層１２と、を備えたホースにおいて、一対の補強層のうち少なくとも一方は、複数のスチールフィラメント１２１を撚り合わせてなるスチールコード１２０から構成されており、複数のスチールフィラメントのうち最外周側に位置するとともに互いに接触する一対のスチールフィラメントと前記スチールコードの外接円との接点どうしの距離である隙間幅をＡ（ｍｍ）とし、一対のスチールフィラメントの共通外接線から当該一対のスチールフィラメントどうしの接触点までの距離である隙間深さをＢ（ｍｍ）とし、中間ゴム層の厚みをＣ（ｍｍ）としたとき、（Ａ／Ｂ）×Ｃ≧１．１１（ｍｍ）を満たす。【選択図】図３