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    • 9. 发明公开
    • CONNECTION STRUCTURE FOR DIFFERENT KINDS OF METAL TUBES
    • VERBINDUNGSSTRUKTURFÜRVERSCHIEDENE METALLROHRARTEN
    • EP1903269A1
    • 2008-03-26
    • EP06781290.9
    • 2006-07-13
    • Nichirin Co., Ltd.
    • NAKANO, Yoshio, Himeji Kojyo in Nichirin Co. Ltd.KATAYAMA, T., Himeji Kojyo in Nichirin Co., Ltd.YAGI, Takashi, Himeji Kojyo in Nichirin Co., Ltd.MATSUI, M., Himeji Kojyo in Nichirin Co.Ltd.
    • F16L13/10F16L33/26
    • F16L13/103F16L25/0072F16L33/34F16L47/24
    • A connection structure for connecting dissimilar metal tubes includes a metal bellows tube (A) having a reinforcement portion (3) disposed on the outer surface of the bellows (5), and a metal tube (B) composed of a material different from that of the bellows tube, the metal bellows tube (A) being integrally connected to the metal tube (B). A connection section on the bellows tube side includes a straight tube portion (1) of the bellows tube (A), a nipple (2), the reinforcement portion (3), and a fastening collar (4), being fitted and secured to each other in that order from the inside of the tube. The nipple (2) has a base (2-1) joined to the reinforcement portion (3) and a connection end (2-2) extending to the metal tube (B) side farther than an end face of the fastening collar (4). The fastening collar (4) has a small-diameter portion (4-1) located on the metal tube (B) side and a large-diameter portion (4-2) located on the bellows side of the metal bellows tube, the small-diameter portion (4-1) being continuous with the large-diameter portion (4-2). A connection section on the metal tube (B) side includes a connection end (6) of the metal tube (B) and a sleeve (7) secured to the outer side of the connection end (6). The sleeve (7) has a base (7-1) joined to the connection end (6) and a fitting end (7-2) extending to the metal bellows tube (A) side. The fitting end (7-2) of the sleeve (7) on the metal tube (B) side is fitted on the small-diameter portion (4-1) of the fastening collar (4) on the metal bellows tube (A) side. The outer surface of the connection end (2-2) of the nipple (2) is bonded and fixed to the inner surface of the connection end (6) of the metal tube (B) with a thermosetting resin while an end face of the reinforcement portion (3) of the metal bellows tube (A) and the end face of the fastening collar (4) are in contact with or close to the end face of the connection end (6) of the metal tube (B).
    • 用于连接异种金属管的连接结构包括:金属波纹管(A),其具有设置在波纹管(5)的外表面上的加强部分(3),以及金属管(B),其由与 波纹管,金属波纹管(A)与金属管(B)整体连接。 波纹管侧的连接部分包括波纹管(A)的直管部分(1),接头(2),加强部分(3)和紧固环(4),其被安装并固定到 相互依次从管子的内部开始。 接头(2)具有连接到加强部分(3)的基部(2-1)和延伸到金属管(B)侧的连接端(2-2)比紧固轴环(4)的端面更远 )。 紧固环(4)具有位于金属管(B)侧的小直径部分(4-1)和位于金属波纹管的波纹管侧的大直径部分(4-2),小直径部分 直径部分(4-1)与大直径部分(4-2)连续。 金属管(B)侧的连接部分包括金属管(B)的连接端(6)和固定在连接端(6)的外侧的套筒(7)。 套筒(7)具有连接到连接端(6)的底座(7-1)和延伸到金属波纹管(A)侧的装配端(7-2)。 金属管(B)侧的套筒(7)的装配端(7-2)装配在金属波纹管(A)上的紧固环(4)的小直径部分(4-1)上, 侧。 乳头(2)的连接端(2-2)的外表面用热固性树脂粘合并固定到金属管(B)的连接端(6)的内表面,同时 金属波纹管(A)的加强部分(3)和紧固环(4)的端面与金属管(B)的连接端(6)的端面接触或接近。