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公开(公告)号：US10240699B2
公开(公告)日：2019-03-26
申请号：US15323603
申请日：2015-09-17
发明人： Makoto Fujii , Masaki Miyamoto , Toshihide Iida , Tomoyuki Koike , Atsushi Nakano , Daisuke Urata
摘要： A resin-made pipe joint with enhanced sealing property between a joint body and sleeve. A sealing portion which seals between an inner circumferential surface of an inserting portion of a sleeve and an outer circumferential surface of an inner cylinder portion is formed by press-inserting an inserting portion into a groove portion of the joint body. When the inserting portion is press-inserted into the groove portion, a space is formed between a body cylinder portion located opposite to an opening portion of the groove portion in the axial direction, and the projection end of the inserting portion. After completing press insertion of the inserting portion into the groove portion, in a section including axis of the inner cylinder portion, a region in the outer circumferential surface of the inner cylinder portion facing the space forms an angle of 5° to 15° to the axis of the inner cylinder portion.
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公开(公告)号：US10132431B2
公开(公告)日：2018-11-20
申请号：US14888140
申请日：2014-03-24
发明人： Makoto Fujii , Toshihide Iida
IPC分类号： F16L47/04 , F16L13/14 , F16L19/028 , F16L33/22 , F16L15/08
摘要： A pipe-connecting device includes: an inner ring having: an outer circumferential portion having a tip-contracted outer-circumferential flared surface that is to be press-inserted into an end portion of a tube to flare the tube, and an inner circumferential portion constituting a fluid transfer path; a pipe joint body that has a tubular screwing portion having an external thread; and a union nut having an internal thread that is screwed with the external thread. The inner ring including the tube is inserted into the tubular screwing portion, and the tip-contracted outer-circumferential flared surface is pressed through the tube by a pressing portion of the union nut. The pressing portion of the union nut is formed into an inclined inner circumferential surface that is inclined in the same direction as the tip-contracted outer-circumferential flared surface with respect to the axis of the tubular screwing portion.
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公开(公告)号：US10571060B2
公开(公告)日：2020-02-25
申请号：US15509891
申请日：2016-01-20
发明人： Makoto Fujii , Kazukiyo Teshima , Tatsuya Fujii , Toshihide Iida , Tomoyuki Koike , Shintaro Makihata
摘要： A structure of a resin-made pipe joint includes a sleeve which is press-insertable from one axial side into one longitudinal end portion of a flexible tube to flare the one longitudinal end portion to hold the flared state, a joint body which is couplable to the sleeve, and a union nut which is fastenable to the joint body to hold a state where the sleeve press-inserted into the one longitudinal end portion is coupled to the joint body. The sleeve has a taper-like first outer circumferential surface, a second outer circumferential surface having an outer diameter that is smaller than a maximum outer diameter of the first outer circumferential surface, and an annular step portion which is an annular step portion that is disposed between the first outer circumferential surface and the second outer circumferential surface and comprises an edge portion on a side of the first outer circumferential surface.
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公开(公告)号：US20160076686A1
公开(公告)日：2016-03-17
申请号：US14888146
申请日：2014-03-24
发明人： Makoto Fujii , Toshihide Iida
IPC分类号： F16L33/22 , F16L19/025
CPC分类号： F16L33/223 , F16L19/025 , F16L19/028 , F16L19/041 , F16L47/04
摘要： In a pipe-connecting device having a pipe joint body, a union nut, and an inner ring that is to be press-inserted into an end of a tube, a seal element portion is formed in a basal end portion of the inner ring, and a seal forming portion of the pipe joint body is formed. The pipe-connecting device has a configuration where, in an assembled state, the seal element portion and the seal forming portion are pressed against each other, and a diameter-contracted tube portion, which is in a tube end portion, and which is fitted onto a base-contracted diameter-contracted outer circumferential surface, and a tubular screwing portion are pressed against each other by a contact pressure that is lower than a contact pressure between the seal element portion and the seal forming portion, or separated from each other.
摘要翻译： 在具有管接头本体，联管螺母和被压入管的端部的内环的管连接装置中，在内圈的基端部形成有密封元件部， 并且形成管接头体的密封形成部。 管连接装置具有以下结构：在组装状态下，密封元件部分和密封件形成部分彼此挤压，并且在管端部中的直径收缩的管部分被安装 并且通过低于密封元件部分和密封件形成部分之间的接触压力或彼此分离的接触压力将管状螺纹连接部彼此压靠在基底收缩的直径缩小的外圆周表面上。
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公开(公告)号：US11441717B2
公开(公告)日：2022-09-13
申请号：US16330966
申请日：2017-06-15
发明人： Makoto Fujii , Masaki Miyamoto , Tatsuya Fujii , Toshihide Iida , Tomoyuki Koike , Shintaro Makihata
IPC分类号： F16L47/04 , F16L19/028 , F16L19/04 , F16L19/06
摘要： A resin tube fitting has a body with a sleeve allowing the longitudinal end of the tube to be put therein, an inner ring with a press-in portion configured to be pressed in the longitudinal end of the tube, and a union nut with a connector configured to be screwed to an outer periphery of the body to allow the longitudinal end of the tube to be put radially between the connector and the press-in portion. The inner ring and the union nut are made of resin, which has a property of contracting in response to change in ambient temperature. The radial contraction rate of the connector is higher by 0.05% or more than that of the press-in portion of the inner ring.
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公开(公告)号：US20190024836A1
公开(公告)日：2019-01-24
申请号：US16141488
申请日：2018-09-25
发明人： Makoto Fujii , Toshihide Iida
IPC分类号： F16L47/04 , F16L19/04 , F16L19/00 , F16L19/028
摘要： A pipe joint, made of synthetic resin, including: an inner ring; a joint body having an annular sealing groove and a male screw portion formed on an outer circumference; a union nut having a female screw portion formed on an inner circumference to be tightened onto the male screw portion of the joint body, such that a first opposing surface is formed in the joint body to be perpendicular to an axial direction, and a second opposing surface is formed in the union nut to oppose the first opposing surface. An engagement projection is provided in one of the first opposing surface and the second opposing surface. An engagement recess is provided in the other of the first opposing surface and the second opposing surface such that the engagement projection engages with the engagement recess when the union nut has been tightened up to an appropriate position.
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公开(公告)号：US09791084B2
公开(公告)日：2017-10-17
申请号：US14889695
申请日：2014-04-23
发明人： Makoto Fujii , Toshihide Iida
IPC分类号： F16L55/00 , F16L47/04 , F16L19/028 , F16L33/22
CPC分类号： F16L47/04 , F16L19/028 , F16L33/223
摘要： A pipe joint made of synthetic resin includes: a joint body including a male screw portion on an outer circumferential portion; and a union nut including a female screw portion formed on an inner circumferential portion such that the female screw portion is tightened onto the male screw portion of the joint body. An outer circumferential surface of the joint body has a projection portion that is integrated therewith and projects radially outward. An inner circumferential surface of the union nut has a convex or concave engagement portion that is integrated therewith and engages with the projection portion when the union nut is tightened up to an appropriate position.
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公开(公告)号：US20160116096A1
公开(公告)日：2016-04-28
申请号：US14889695
申请日：2014-04-23
发明人： Makoto Fujii , Toshihide Iida
CPC分类号： F16L47/04 , F16L19/028 , F16L33/223
摘要： A pipe joint made of synthetic resin includes: a joint body including a male screw portion on an outer circumferential portion; and a union nut including a female screw portion formed on an inner circumferential portion such that the female screw portion is tightened onto the male screw portion of the joint body. An outer circumferential surface of the joint body has a projection portion that is integrated therewith and projects radially outward. An inner circumferential surface of the union nut has a convex or concave engagement portion that is integrated therewith and engages with the projection portion when the union nut is tightened up to an appropriate position.
摘要翻译： 由合成树脂制成的管接头包括：在外周部分上具有外螺纹部分的接合体; 以及联接螺母，其包括形成在内周部分上的内螺纹部分，使得内螺纹部分被紧固到接头体的阳螺纹部分上。 接头主体的外周面具有与其一体形成的突出部，并且径向向外突出。 联管螺母的内圆周表面具有一个凸形或凹形的接合部分，该凸形或凹形的接合部分在联接螺母紧固到适当的位置时与凸出部分结合。
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公开(公告)号：US20160061361A1
公开(公告)日：2016-03-03
申请号：US14888151
申请日：2014-03-24
发明人： Makoto Fujii , Toshihide Iida
CPC分类号： F16L15/08 , F16L13/147 , F16L19/028 , F16L19/04 , F16L33/223 , F16L47/04
摘要： A pipe-connecting device includes: an inner ring having an outer circumferential portion having, at a tip end, a tip-contracted outer-circumferential flared surface that flares a tube end portion; a pipe joint body that has a tubular screwing portion having an external thread; and a union nut having an internal thread. The inner ring flares the tube end portion, and is inserted into the tubular screwing portion. The tip-contracted outer-circumferential flared surface is clamped and pressed through the tube by the union nut which is screw-advanced by screwing with the tubular screwing portion. A tube pressing portion which is in the union nut, and which presses the tube against the tip-contracted outer-circumferential flared surface is formed into an inclined inner circumferential surface which is inclined in the same direction as the outer-circumferential flared surface with respect to the axis of the tubular screwing portion.
摘要翻译： 管连接装置包括：具有外周部的内圈，所述外周部在末端具有使端部收缩的外周端部扩张面， 管接头体，其具有具有外螺纹的管状螺纹部; 和具有内螺纹的联管螺母。 内圈弹出管端部，插入管状螺纹部。 顶端收缩的外圆周扩张表面通过联接螺母被夹紧并压紧通过管子，螺母通过与管状螺纹部分的螺纹拧紧而前进。 管接合螺母中的管按压部，将管压靠在收缩外周侧的扩张面上的管按压部形成为倾斜的内周面，该内周面与外周侧的喇叭形面相同地倾斜， 相对于管状螺纹部的轴线。
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公开(公告)号：US10801650B2
公开(公告)日：2020-10-13
申请号：US16141488
申请日：2018-09-25
发明人： Makoto Fujii , Toshihide Iida
IPC分类号： F16L19/00 , F16L19/028 , F16L19/04 , F16L47/04
摘要： A pipe joint, made of synthetic resin, including: an inner ring; a joint body having an annular sealing groove and a male screw portion formed on an outer circumference; a union nut having a female screw portion formed on an inner circumference to be tightened onto the male screw portion of the joint body, such that a first opposing surface is formed in the joint body to be perpendicular to an axial direction, and a second opposing surface is formed in the union nut to oppose the first opposing surface. An engagement projection is provided in one of the first opposing surface and the second opposing surface. An engagement recess is provided in the other of the first opposing surface and the second opposing surface such that the engagement projection engages with the engagement recess when the union nut has been tightened up to an appropriate position.
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