To improve an accuracy of surface treatment on an inner peripheral surface of an end portion of a washer tube.SOLUTION: There is provided a washer tube that is obtained by performing extrusion molding in which a tube structure 20 is obtained by integrally molding three tubular members 41, and after extrusion molding, the obtained tube structure 20 is divided. In the tube structure 20, straight lines connecting radial centers of the three tubular members 41 constituting the tube structure 20 provide each side of an equilateral triangle. The washer tube consists of the tubular members 41, and on an outer peripheral surface of the tubular member 41, two linear peeling marks extending along the central axis of the tubular member 41 are present at intervals in the circumferential direction. In the cross section of the tubular member 41 orthogonal to the central axis of the tubular member 41, an angle obtained by the two straight lines connecting the radial center of the tubular member 41 and each of the peeling marks is less than 180°, preferably 60°.SELECTED DRAWING: Figure 3

    【課題】ウォッシャチューブにおいて端部の内周面への表面処理の精度を向上させる。【解決手段】3つの筒状部材41が一体に成形されてなるチューブ構造体20を押出成形し、押出成形後、チューブ構造体20を分離して形成されるウォッシャチューブである。チューブ構造体20においては、チューブ構造体20を構成する3つの筒状部材41の各々の径方向の中心同士を結ぶ直線が正三角形の各辺となる。上記ウォッシャチューブは、筒状部材41からなり、筒状部材41の外周面上に、筒状部材41の中心軸に沿って延びる直線状の2つの剥離痕が周方向に間隔を空けて存在している。筒状部材41の中心軸と直交する筒状部材41の断面内において、筒状部材41の径方向の中心と各々の上記剥離痕とを結ぶ2本の直線が成す角度は、180°未満、好ましくは、60°である。【選択図】図3


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    Titel :

    WASHER TUBE AND METHOD OF MANUFACTURING THE SAME, AND TUBE STRUCTURE


    Weitere Titelangaben:

    ウォッシャチューブ及びその製造方法、チューブ構造体


    Beteiligte:
    MAKABE TAKESHI (Autor:in) / KOBORI YUYA (Autor:in)

    Erscheinungsdatum :

    2021-02-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen / C08J Verarbeitung , WORKING-UP



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