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2. 发明申请

US20120020740A1 CONNECTION STRUCTURE FOR A MANHOLE PIPE AND A SEWER MAIN PIPE 审中-公开
标题翻译：管道管和主管的连接结构
公开(公告)号：US20120020740A1
公开(公告)日：2012-01-26
申请号：US12840924
申请日：2010-07-21
申请人： Norio Otsuga
发明人： Norio Otsuga
IPC分类号： F16L55/18
CPC分类号： F16L41/088 , E03F5/021 , F16L25/14
摘要： In a connection structure (A) for a manhole pipe (1) and sewer main pipe (2) in which the sewer main pipe (2) places one end at a circular opening (12) of the manhole pipe (1) through a flexible coupler (F), the flexible coupler (F) has a rubber coupler body (3). Around an inner surface of the rubber coupler body (3), there is provided a water-sealing ridge (32) with a butylene rubber layer (33) placed around an outer surface of the rubber coupler body (3). On a rear end surface of the rubber coupler body (3), has an outer flange (31) which is brought into engagement with an outer periphery of the circular opening (12) upon inserting the rubber coupler body (3) to the circular opening (12) of the manhole pipe (1). A rubber coupler cylinder (5) is provided to have a diameter-increased cylinder portion (51), a diameter-reduced cylinder portion (52) and a transitionary portion (53) connecting the diameter-increased cylinder portion (51) to the diameter-reduced cylinder portion (52). The diameter-increased cylinder portion (51) has one end firmly fit to an outer surface of one end of a rigid circular pipe (4). The diameter-reduced cylinder portion (52) has one end firmly fit to an outer surface of one end of the sewer main pipe (1).
摘要翻译：在用于人孔管（1）和下水道主管（2）的连接结构（A）中，其中下水道主管（2）将一端放置在人孔管（1）的圆形开口（12）处，通过柔性耦合器（F），柔性耦合器（F）具有橡胶耦合器主体（3）。在橡胶联接器主体（3）的内表面附近，设置有一个在橡胶耦合器体（3）的外表面周围放置有丁烯橡胶层（33）的水封脊（32）。在橡胶联接器主体（3）的后端表面上具有外部凸缘（31），该外部凸缘（31）在将橡胶联接器体（3）插入到圆形开口（3）中时与圆形开口（12）的外周接合（1）的管道（12）。橡胶联轴器筒体（5）设置成具有直径增大的圆筒部分（51），直径减小的圆筒部分（52）和将直径增加圆柱部分（51）连接到直径减少的气缸部分（52）。直径增大的气缸部分（51）的一端牢固地配合到刚性圆形管道（4）的一端的外表面。直径减小的缸部（52）的一端牢固地配合到下水道主管（1）的一端的外表面。

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