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公开(公告)号：US09752609B2
公开(公告)日：2017-09-05
申请号：US14903553
申请日：2014-07-08
申请人： TOPURA CO., LTD.
发明人： Shigeto Mori , Hiroshi Nakano , Yosuke Okamura , Seiya Hoshino
CPC分类号： F16B35/048 , B21H3/02 , F16B39/30
摘要： A threaded fastener is provided in which a head bearing surface can be in full intimate contact with a counterpart. The threaded fastener is provided with a head (10), and a screw shank (20) extending from the head (10). The screw shank (20) is provided with a parallel thread portion (22) having a complete screw thread formed therein, a neck portion (24) having no screw thread, a transition thread portion (26) having an incomplete screw thread formed to extend from the parallel thread portion (22) toward the neck portion (24) with its root diameter being the same as that of the complete screw thread and with its thread height gradually becoming lower to reach the neck portion, and an underneck rounded portion (28) formed in a corner angle portion between the neck portion (24) and a head bearing surface (11), wherein the neck portion (24) is work hardened with its diameter being narrowed from a root diameter of the parallel thread portion (22).
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公开(公告)号：US20240247680A1
公开(公告)日：2024-07-25
申请号：US18566016
申请日：2021-09-16
申请人： TOPURA CO., LTD.
发明人： Youichi MATSUEDA
CPC分类号： F16B43/001 , F16J15/10
摘要： To provide a screwing fastener that is capable of preventing damage to a function adding member when tightening, and is capable of maintaining suitable functions of the function adding member and a suitable fastened state. A screwing fastener includes a fastener main body 10, a screw portion 13 for tightening the fastener main body 10 to a fastened member 200, a flange portion 14 provided to the fastener main body 10, and a seal function adding member 20 (function adding member) that is provided to the flange portion 14, in which the seal function adding member 20 comes into contact with the fastened member when tightening. The seal function adding member 20 has at least a two-layer structure of a sliding portion 22 (first adding portion) that is in contact with the flange portion 14, and a seal portion 21 (second adding portion) that comes into contact with the fastened member 200.
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公开(公告)号：US11953045B2
公开(公告)日：2024-04-09
申请号：US17430625
申请日：2020-02-03
申请人： TOPURA CO., LTD.
发明人： Shigeto Mori , Mayumi Matsuno , Naoki Horiuchi
IPC分类号： F16B33/02
CPC分类号： F16B33/02
摘要： To provide a screw thread which achieves a further reduction in screwing torque while securing removability of a coating film or the like and which is capable of stabilizing conductivity. In a screw thread in which a recessed portion (7) is partially provided on a flank surface (131) of a screw thread ridge provided on a screw thread shaft main body (5), a screw thread ridge (13) in a section where the recessed portion (7) is formed is smaller than a regular screw thread ridge (3), and a ridge height (H12) in a distal end portion in a screwing direction is lower than a ridge height (H11) in a rear end portion in the screwing direction W.
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公开(公告)号：US20220128082A1
公开(公告)日：2022-04-28
申请号：US17430625
申请日：2020-02-03
申请人： TOPURA CO., LTD.
发明人： Shigeto MORI , Mayumi MATSUNO , Naoki HORIUCHI
IPC分类号： F16B33/02
摘要： To provide a screw thread which achieves a further reduction in screwing torque while securing removability of a coating film or the like and which is capable of stabilizing conductivity. In a screw thread in which a recessed portion (7) is partially provided on a flank surface (131) of a screw thread ridge provided on a screw thread shaft main body (5), a screw thread ridge (13) in a section where the recessed portion (7) is formed is smaller than a regular screw thread ridge (3), and a ridge height (H12) in a distal end portion in a screwing direction is lower than a ridge height (H11) in a rear end portion in the screwing direction W.
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公开(公告)号：US09267528B2
公开(公告)日：2016-02-23
申请号：US14410823
申请日：2013-06-26
申请人： TOPURA CO., LTD.
发明人： Naoki Horiuchi
CPC分类号： F16B35/04 , F16B25/0021 , F16B25/0068 , F16B25/0084
摘要： A tapping screw provides sufficient tightening force even if used with a thin screwed member and tightening target member. The tapping screw (100) includes a first ridge (11) and a second ridge (12) configured to have incomplete threads that are 180° out of phase. The tapping screw (100) includes a first tightening force improvement ridge (13) and a second tightening force improvement ridge (14) that are set so as to be smaller than the outside diameters of complete thread sections of parallel threaded portions of the first ridge (11) and the second ridge (12) but larger than the inside diameter of the prepared hole are provided in each of areas which are 90° out of phase with the first ridge (11) and the second ridge (12), respectively, such that the tightening force improvement ridges bite into the prepared hole when the screw is fully screwed in.
摘要翻译： 自攻螺丝提供足够的紧固力，即使与细螺纹部件和紧固目标部件一起使用。 自攻螺钉（100）包括第一脊（11）和第二脊（12），其构造成具有相位相差180°的不完全螺纹。 自攻螺钉（100）包括第一紧固力改进脊（13）和第二紧固力改进脊（14），其被设定为小于第一脊的平行螺纹部分的完整螺纹部分的外径 （11）和第二脊部（12）但大于所制备的孔的内径分别设置在与第一脊部（11）和第二脊部（12）相差90°的区域中， 使得当螺钉被完全拧入时，紧固力改进脊咬入准备好的孔中。
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公开(公告)号：US11795986B2
公开(公告)日：2023-10-24
申请号：US17160151
申请日：2021-01-27
申请人： TOPURA CO., LTD.
发明人： Minoru Sugiyama , Shigeto Mori , Mayumi Matsuno , Naoki Horiuchi
CPC分类号： F16B5/0052
摘要： An external screw member includes a parallel screw portion and a tapered screw portion provided on a side further toward a tip end than the parallel screw portion, and a plurality of sets of step portion and a transition screw thread portion are provided on at least one of the parallel screw portion and the tapered screw portion, the step portion having a reduced thread height in a radial direction and the transition screw thread portion gradually increasing in diameter from the step portion in an anti-driving rotation direction so as to reach a thread height of a normal screw thread portion. A top portion of the transition screw thread portion is positioned at an offset toward a pressure side relative to a position of a regular screw pitch in a minimum diameter portion of the step portion, and transitions to the regular screw pitch in the anti-driving rotation direction.
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公开(公告)号：US11279990B2
公开(公告)日：2022-03-22
申请号：US15999785
申请日：2017-02-16
IPC分类号： C22C21/14 , C22C21/16 , C22C21/18 , C22C21/08 , C22C21/02 , C22C21/00 , C22F1/043 , C22F1/057 , F16B19/06 , F16B35/00 , F16B37/00
摘要： An aluminum alloy contains 0.7% to 1.8% of silicon, 0.5% to 2.1% of copper, 0.4% to 1.8% of manganese, 0.6% to 1.6% of magnesium, and 0.1% to 0.7% of zinc in terms of mass ratio and the balance aluminum with inevitable impurities.
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公开(公告)号：US11162525B2
公开(公告)日：2021-11-02
申请号：US16470972
申请日：2017-11-20
申请人： TOPURA CO., LTD.
发明人： Kuninori Matsumoto , Mayumi Matsuno
摘要： An external thread member capable of performing a fastening operation efficiently without increasing the number of parts by assembling a collar into the external thread member. The external thread member 1 includes a shaft portion 5 inserted into a mounting hole 105 of a mounting member 101 through a collar 7, and the mounting member 101 is fastened to a fastening member 102. The shaft portion 5 includes a threaded portion 51 and a neck portion 52. The collar 7 is mounted on the neck portion 52 so as to be rotatable relative to each other and is engaged with the threaded portion 51 whereby retention is achieved. A counterbore hole 106 is formed in an opening close to the mounting hole 105 of an internal thread hole 104 with a tubular portion 71 inserted into the mounting hole 105 of the collar 7.
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公开(公告)号：US20210231157A1
公开(公告)日：2021-07-29
申请号：US17160151
申请日：2021-01-27
申请人： TOPURA CO., LTD.
发明人： Minoru SUGIYAMA , Shigeto MORI , Mayumi MATSUNO , Naoki HORIUCHI
IPC分类号： F16B25/00
摘要： An external screw member includes a parallel screw portion and a tapered screw portion provided on a side further toward a tip end than the parallel screw portion, and a plurality of sets of step portion and a transition screw thread portion are provided on at least one of the parallel screw portion and the tapered screw portion, the step portion having a reduced thread height in a radial direction and the transition screw thread portion gradually increasing in diameter from the step portion in an anti-driving rotation direction so as to reach a thread height of a normal screw thread portion. A top portion of the transition screw thread portion is positioned at an offset toward a pressure side relative to a position of a regular screw pitch in a minimum diameter portion of the step portion, and transitions to the regular screw pitch in the anti-driving rotation direction.
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公开(公告)号：US20210301861A1
公开(公告)日：2021-09-30
申请号：US17217056
申请日：2021-03-30
申请人： TOPURA CO., LTD.
发明人： Youichi MATSUEDA
摘要： A threaded fastener includes a bolt and a washer. The washer has a washer main body and a seal member provided at an outer peripheral side of the washer main body. The washer is caulked and fixed to a shank portion of the bolt in a water stop state, and the seal member is in contact with a fastened member in a water stop state, with a bearing surface of the washer main body held in contact with the fastened member. The seal member is provided on its outer periphery with a protrusion portion that protrudes outward beyond a radially outer end of a contact portion of the seal member with the washer in a no-load state. A back surface of the protrusion portion on the opposite side of the fastened member is an inclined surface.
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