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公开(公告)号：US20230175621A1
公开(公告)日：2023-06-08
申请号：US17924215
申请日：2021-03-31
发明人： Ayumi KUROSAKI , Shingo HIGUCHI , Kazukiyo TESHIMA
IPC分类号： F16L33/22
CPC分类号： F16L33/222 , F16L33/223 , F16L19/07
摘要： An inner ring 4 of a pipe joint 1 includes a bulge portion 6 formed at an axially outer end portion thereof so as to project toward a radially outer side, and to be press-fitted into an end portion of a tube 8, and has a fluid flow passage 4a formed on a radially inner side of the bulge portion 6. The bulge portion 6 is formed so as to be tapered from an axially inner side toward an axially outer end thereof in an axial cross-sectional view, and has a flat surface 6e formed at the axially outer end thereof and extending in a radial direction.
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公开(公告)号：US20230045298A1
公开(公告)日：2023-02-09
申请号：US17791499
申请日：2020-10-13
摘要： A resin joint includes a joint body having a flow path, sleeves, and union nuts that fix tubes to the joint body. The joint body has a body portion with a curved inner peripheral surface and a straight portion protruding from an end portion of the body portion. The straight portion has outer and inner cylindrical portions radially arranged inside the outer cylindrical portion. An end portion of the inner cylindrical portion is positioned closer to the body portion than is an end portion of the outer cylindrical portion. A groove portion extending parallel with the outer and inner cylindrical portions in an axial direction is formed between an inner peripheral surface of the outer cylindrical portion and an outer peripheral surface of the inner cylindrical portion. The tube is fixed to the joint body such that a press-fit portion of the sleeve is press-fitted in the groove portion.
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公开(公告)号：US20230349492A1
公开(公告)日：2023-11-02
申请号：US18041746
申请日：2021-06-04
IPC分类号： F16L17/067
CPC分类号： F16L17/067
摘要： A tapered surface 14 is formed at each axially outer end portion of an inner circumferential surface 3a of a gasket 3 such that a diameter thereof gradually increases from an axially inner side toward an axially outer end thereof in a state before an annular primary sealing portion 11 of the gasket 3 is press-fitted into an annular primary sealing groove 2b of a fluid device 2. A diameter increase starting point P1 of the tapered surface 14 is located in a range R from a deformation starting point position P2 serving as a starting point from which the inner circumferential surface 3a is deformed due to the primary sealing portion 11 receiving external force form the fluid device 2 when the primary sealing portion 11 is press-fitted into the primary sealing groove 2b, to a center position P3 in an axial direction of the inner circumferential surface 3a.
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公开(公告)号：US20230151911A1
公开(公告)日：2023-05-18
申请号：US17916306
申请日：2021-03-09
发明人： Ayumi KUROSAKI , Shingo HIGUCHI , Kazukiyo TESHIMA
摘要： An inner ring of a pipe joint includes a first tapered surface formed at one axial end portion of an inner circumferential surface such that a diameter thereof gradually increases from another axial side toward one axial end thereof in a state before a bulge portion is press-fitted into an end portion of a tube. A diameter increase starting point of the first tapered surface is located in a range from a deformation starting point, which serves as a starting point from which an inner circumferential surface is deformed due to the bulge portion receiving external force from the tube when the bulge portion is press-fitted into the end portion of the tube, to a position, on the inner circumferential surface, corresponding to one axial end of an outer circumferential surface of a body portion.
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公开(公告)号：US20230039578A1
公开(公告)日：2023-02-09
申请号：US17792748
申请日：2021-01-14
摘要： An inner ring 4 of a pipe joint 1 includes a cylindrical body portion 5 having a communication hole 5a for providing communication between flow passage holes 2c and 8a of a joint body 2 and a tube 8, and an annular primary sealing portion 11 projecting from a radially inner side of an axially outer end portion of the body portion 5 toward an axially outer side and to be press-fitted into an annular primary sealing groove 2d formed on the joint body 2. The primary sealing portion 11 is formed so as to be tapered from an axially inner end thereof toward an axially outer end thereof in an axial cross-sectional view, and has a flat surface 11c extending from a radially outer end 11b of the axially outer end thereof toward the radially inner side.
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公开(公告)号：US20220213882A1
公开(公告)日：2022-07-07
申请号：US17605265
申请日：2020-02-07
发明人： Kazukiyo TESHIMA , Yu NOTOJI , Shingo HIGUCHI
摘要： A rolling diaphragm 5 of a rolling diaphragm pump 1 has a movable portion 31 reciprocatable together with a piston 3, a fixed portion 32 fixed to a housing 2, and a thin film portion 33 connecting the movable portion 31 and the fixed portion 32 and bending due to reciprocation of the piston 3. A rubber layer 6 is overlaid on the thin film portion 33 without being adhered to the thin film portion 33, an end portion 6a on the movable portion 31 side of the rubber layer 6 is fixed to the piston 3, and an end portion 6b on the fixed portion 32 side of the rubber layer 6 is fixed to the housing 2.
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