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1. 发明专利

JP2010048376A Bend pipe joint for drainage 审中-公开
标题翻译：弯管管接头排水
公开(公告)号：JP2010048376A
公开(公告)日：2010-03-04
申请号：JP2008214487
申请日：2008-08-22
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： OKIAYU TAKUJI , MIZUTANI MASAKAZU , NAKADA TSUMORU
IPC分类号： F16L21/04 , F16L43/00
摘要： PROBLEM TO BE SOLVED: To provide a pipe joint for drainage capable of maintaining a corrosion resistance on an inner peripheral surface of a bending joint section even in a cleaning method for a general drainpipe which uses a cleaning device.
SOLUTION: The pipe joint 1 for drainage has a joint body 10 having sockets 11 for inserting steel pipes 50 on both ends and a flow passage 13 connected with the socket 11 and bent at a designated angle, and a circular seal packing 20 inserted outward an outer peripheral surface of a pipe. An axial center 11a of the socket 11 is arranged to be offset outside in the bending direction of the flow passage against the axial center 13a of the flow passage 13 so that an imaginary line 40 for combining both inner R sections 13b of the flow passage 13 at pipe ends of the steel pipes 50 inserted into both sides of the socket 11 is not crossed with the joint body 10.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使在使用清洁装置的一般排水管的清洁方法中，也提供一种能够在弯曲接头部的内周面上保持耐腐蚀性的排水管接头。解决方案：用于排水的管接头1具有接头本体10，接头体10具有用于在两端插入钢管50的插座11和与插座11连接并以指定角度弯曲的流动通道13和圆形密封垫20 向外插入管的外周面。插座11的轴心11a配置成相对于流路13的轴心13a在流路的弯曲方向上向外侧偏移，从而将用于组合流路13的内部R部13b的假想线40 在插入插座11的两侧的钢管50的管端不与接头体10交叉。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2008089132A Pipe joint 审中-公开
标题翻译：管接头
公开(公告)号：JP2008089132A
公开(公告)日：2008-04-17
申请号：JP2006272666
申请日：2006-10-04
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： KATAYAMA YOSHIO , MIZUTANI MASAKAZU
IPC分类号： F16L21/04 , F16L21/02
摘要： PROBLEM TO BE SOLVED: To provide a pipe joint for preventing the leakage of fluid resulting from the permanent compression set of a seal member.
SOLUTION: The pipe joint comprises a joint body 2 having a female portion 21 at the end, and having a down-grade tapered face 22 formed from the terminal end thereof toward the corner side and an annular groove 23 formed in the corner thereof, a pressing ring 3 having a male portion 31 to be screwed into the female portion 21, and the metal seal member 4 having a tapered face 41 to be put in close contact with the tapered portion 22 and formed of a Cu alloy, e.g. When the pressing ring 3 is screwed into the joint body 2, the metal seal member 4 is put in close contact with the outer peripheral face of a connection pipe 10. The metal seal member 4 preferably has a protruded strip portion 43a on the tapered face 41.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于防止由密封构件的永久压缩永久变形而导致的流体泄漏的管接头。管接头包括在端部具有阴部21的接头本体2，并且具有从其端部朝向角侧形成的下坡度锥形面22和形成在拐角处的环形槽23 具有螺纹连接到阴部21中的阳部31的压环3和具有锥形面41的金属密封构件4与锥形部22紧密接触并由Cu合金形成，例如当按压环3旋入接头体2时，金属密封构件4与连接管10的外周面紧密接触。金属密封构件4优选在锥面上具有突出的带状部分43a （C）2008年，JPO＆INPIT

3. 发明专利

JP2006009884A Pipe joint 审中-公开
标题翻译：管接头
公开(公告)号：JP2006009884A
公开(公告)日：2006-01-12
申请号：JP2004185968
申请日：2004-06-24
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： KATO KAZUMI , MIZUTANI MASAKAZU , NAKADA TSUMORU
IPC分类号： F16L21/04
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive pipe joint capable of shortening piping work time.
SOLUTION: The pipe joint 1 is provided with a joint main body 2 in which a connection pipe 6 is inserted into at least one end side, a seal member 3 fitted into inside of the joint main body 2, a retainer member 4 abutting on the seal member 3 and a plurality of bolts 5 pressing the retainer member 4 in the pipe axis direction. At least in its one end part, the joint main body 2 has a flange part 21 with inner diameter into which the connection pipe 6 can be inserted. A bolt 5 is screwed into the flange part 21.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够缩短管道工作时间的便宜的管接头。解决方案：管接头1设置有接头主体2，连接管6插入至少一端侧，密封构件3装配在接头主体2的内部，保持构件4 与密封构件3抵接，多个螺栓5沿管轴方向按压保持构件4。至少在其一个端部，接头主体2具有内径可以插入连接管6的凸缘部21。螺栓5拧入凸缘部分21.版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2002005354A BITE TYPE PIPE COUPLING 失效
公开(公告)号：JP2002005354A
公开(公告)日：2002-01-09
申请号：JP2000190971
申请日：2000-06-26
申请人： HITACHI METALS LTD
发明人： OYA HIROSHI , MIZUTANI MASAKAZU
IPC分类号： F16L21/04 , F16L23/16
摘要： PROBLEM TO BE SOLVED: To provide a bite type pipe coupling for preventing a pipe from being pulled out by eliminating assembling mistakes of parts when performing a connecting work. SOLUTION: The pipe coupling has a packing, a collar and a bite ring between a coupling main body and a pressing ring and connects with a pipe mounted within the coupling main body by fastening the pressing ring. The bite ring is assembled with pins by superposing plural coned springs. The packing, the collar and the bite ring are integrally assembled with the pins. The outer diameter of the collar is formed larger than the inside diameter of a bite ring storing part of the pressing ring.

5. 发明专利

JPH09178066A MECHANICAL TUBE JOINT 失效
公开(公告)号：JPH09178066A
公开(公告)日：1997-07-11
申请号：JP34202195
申请日：1995-12-28
申请人： HITACHI METALS LTD
发明人： MIYASA AKIRA , MIZUTANI MASAKAZU , ICHIHASHI KENJI
IPC分类号： F16L19/04
摘要： PROBLEM TO BE SOLVED: To prevent the associative rotation of a tube by protruding a sliding member from a tapered inner surface to an inner side and bringing the member into contact with the expanded part outer peripheral surface of the tube during fastening of a nut and bringing the tapered inner peripheral surface of the nut into contact with the expanded part outer peripheral surface of the tube after the completion of fastening. SOLUTION: A bag nut 20 is provided with an inner diameter 21 slightly larger than the outer diameter of a stainless tube 40 to be connected and a tapered inner surface 22 having an angle roughly equal to the tapered outer surface 12 of a joint main body inside and in this center part, an annular groove 23 is provided and an annular sliding member 50 is fixed. The sliding member 50 is brought into contact with the outer surface of the expanded part 41 of the tube so as to reduce friction when the bag nut 20 is fastened to the joint main body and after the completion of fastening, the member 50 is contained in the annular groove 23 of the bag nut 23 and the outer surface of the expanded part 41 of the tube is pressed by the tapered inner surface 22. Thus, the associative rotation of the tube when connected to the tube is prevented and the twisting of a gasket is also prevented.

6. 发明专利

JPH09242949A PIPE JOINT FOR STAINLESS STEEL PIPE 失效
公开(公告)号：JPH09242949A
公开(公告)日：1997-09-16
申请号：JP4708596
申请日：1996-03-05
申请人： HITACHI METALS LTD
发明人： MIYASA AKIRA , MIZUTANI MASAKAZU , ICHIHASHI KENJI
IPC分类号： F16L19/02 , F16L19/04
摘要： PROBLEM TO BE SOLVED: To provide a pipe joint for stainless steel pipe which mounts a stainless steel pipe on a joint main body correctly at the time of connection to prevent the damage of a rubber packing, prevents simultaneous turn of the pipe when a cap nut is tightened, and makes it possible to confirm the completion of tightening the cap nut accurately from the outside. SOLUTION: It is a pipe joint for stainless steel pipe which has an enlarged open part like flare at an end of a pipe. It consists of a joint main body 10 having a tapered outer peripheral face and a male screw at the end thereof and a cap nut 20 having a tapered inner peripheral face. An inner face of the enlarged open part of the pipe is brought into pressure-contact with the tapered outer peripheral face 12 of the joint main body 10 by tightening the cap nut 20 on the joint main body 10 for connection. A packing mounting part is provided in the middle part of the tapered outer peripheral face where the tapered outer peripheral face of the joint main body 10 is brought into pressure-contact with the inner face of the enlarged open part of the pipe to mount an annular rubber packing 30 consisting of a part having a circular arc cross section and a beltlike part, and an annular projection part which has extremely small width and protects an end face of the rubber packing 30 is provided in a tip part on a small diameter side of the rubber packing mounting part.

7. 发明专利

JPH09100969A FLARED TYPE PIPE JOINT 失效
公开(公告)号：JPH09100969A
公开(公告)日：1997-04-15
申请号：JP25963695
申请日：1995-10-06
申请人： HITACHI METALS LTD
发明人： MIYASA AKIRA , MIZUTANI MASAKAZU , ICHIHASHI KENJI
IPC分类号： F16L19/02 , F16L19/04
摘要： PROBLEM TO BE SOLVED: To provide a flared type pipe joint having sufficient pull-out impeding force and stable sealing performance. SOLUTION: A flared type pipe joint is formed of a joint body 1 having the tapered peripheral surface 12 and packing 3, and a box nut 2 having the tapered inner peripheral surface 22. A flare part of a pipe to be jointed is clamped between the tapered peripheral surface 12 and the tapered inner peripheral surface 22 to connect the pipe. A pipe enlargement ratio D1 /D0 ×100, a ratio between the pipe outer diameter D0 of the pipe to be connected and the pipe outer diameter D1 of a flare end part after pipe enlargement, is to be 110-115%, and a taper angle of the flare part is to be 30-40 deg..

8. 发明专利

JPH11210951A PACKING TYPE COUPLING 失效
公开(公告)号：JPH11210951A
公开(公告)日：1999-08-06
申请号：JP1469298
申请日：1998-01-27
申请人： HITACHI METALS LTD
发明人： KATO KAZUMI , MIZUTANI MASAKAZU
IPC分类号： F16L21/04
摘要： PROBLEM TO BE SOLVED: To provide a packing type coupling of a compact form through the reduction of the number of part items without damaging sealing ability of a packing even when a pull-off force is exerted on a pipe and have excellent workability. SOLUTION: A coupling comprises a coupling body 1 to interconnect in an airtight manner pipes by fitting it in externally of the end part of a pipe to be connected; a packing 3; and a nut member 2. The coupling body 1 comprises a through-hole 15 through which a connection pipe is inserted, in order, from the inner surface of a central part; a small annual part 14 on which a packing 3 is mounted; a stepped part 13; a large annular part 12; and a female screw 11 with which a nut part 2 is threadedly joined. The packing 3 comprises an annular seal part 31 mounted on the small annular part 4 of the coupling body 1; an annular compression part 32 mounted on the large annular part 12 and pressed against the nut member 2; and a retainer 33 held between the seal part 31 and the compression part 32 and locked at the stepped part 13. A collar 5 is mounted on the end part 1 of the packing 3 and by fastening the nut member 2, connection is executed.

9. 发明专利

JPH09178063A TUBE JOINT WITH FASTENING CONFIRMATION 失效
公开(公告)号：JPH09178063A
公开(公告)日：1997-07-11
申请号：JP33503795
申请日：1995-12-22
申请人： HITACHI METALS LTD
发明人： MIYASA AKIRA , MIZUTANI MASAKAZU , ICHIHASHI KENJI
IPC分类号： F16L19/03
摘要： PROBLEM TO BE SOLVED: To absorb variance in the fastening amounts of a bag nut so as to perform sure execution confirmation by sliding an outer ring to the outer surface side of an inner ring while a bag nut is really fastened so as to cover the outer surface of the inner ring and making sealing connection with a tube. SOLUTION: When the flair part 81 of a tube 8 is engaged with a bag nut 4 and with joint main body by manual fastening, the rotation of the bag nut 4 is regulated and when real fastening is performed by using a pipe wrench or the like, an outer ring 2 is placed over the outer surface of an inner ring 5 so as to be slid. While the flair part 81 of the tube 8 is completely fastened, the outer surface of the inner ring 5 is invisible. Thus, since the completion of the fastening of the bag nut 4 is easily conformed from outside and the flair part 81 of the tube 8 is held between the tapered inner surface of the bag nut 4 and the tapered outer surface 71 of the main body in this condition, the sealing and pulling-out preventing actions of the tube 8 are exerted and thereby normal connection is made.

10. 发明专利

JPH07174269A FLARE JOINT 失效
公开(公告)号：JPH07174269A
公开(公告)日：1995-07-11
申请号：JP32407893
申请日：1993-12-22
申请人： HITACHI METALS LTD
发明人： MIYASA AKIRA , MIZUTANI MASAKAZU
IPC分类号： F16L19/04 , F16L23/024 , F16L23/026 , F16L23/028
摘要： PURPOSE:To provide a flare joint easy to connect, allowing a nut to be easily engaged with a pipe even after flare machining and enabling to connect without giving a twisting action on the pipe. CONSTITUTION:A flare tube 40 with a horn-shape flare part 41 formed by opening an end connection part is pressed by a pressure ring 20 so as to be connected to the tapered outer face 12 of a joint body 10. An annular retainer 30 having the pressing face to be engaged with the outer face of the flare part on one end side and also having the spline like uneven outer peripheral surface on the outer face is mounted between the pressure ring 20 and the flare part 41 of the tube 40. The annular pressure ring 20 has an inner diameter fittable by insertion to the periphery of the flare end part of the flare tube 40, and the uneven inner peripheral surface fittable by insertion to the uneven outer peripheral surface of the retainer. This annular pressure ring 20 is fitted by insertion to the periphery of the annular retainer 30 and engaged with the retainer 30, and the flare tube 40 is pressed to the tapered outer face 12 of the joint body 10 through this retainer 30.

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