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公开(公告)号：US4346739A
公开(公告)日：1982-08-31
申请号：US199290
申请日：1980-10-21
Applicant: Kikuo Asada
Inventor： Kikuo Asada
CPC classification number: F02M55/02 , B23P15/16 , F16L9/04 , Y10T29/4994
Abstract: A composite metal tubing is provided which includes an inner tubular member press fitted into the bore of an outer tubular member. The inner tubular member is made of a steel having a tensile strength of at least 48 kg/mm.sup.2. Additionally, the wall of the inner tubular member has a thickness equal to 1.5 to 8.5% of the outer diameter of the outer tubular member. The resultant composite tubing has increased pressure resistance and resists cavitation.
Abstract translation: 提供了一种复合金属管，其包括装配到外部管状构件的孔中的内部管状构件压力。 内管状构件由抗拉强度至少为48kg / mm2的钢制成。 此外，内部管状构件的壁具有等于外部管状构件的外径的1.5至8.5％的厚度。 所得的复合管材具有增加的耐压性并抵抗空化。
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公开(公告)号：US08147623B2
公开(公告)日：2012-04-03
申请号：US12244641
申请日：2008-10-02
Applicant: Kikuo Asada , Osamu Endo , Katsunori Nagao , Keisuke Hitoshio
Inventor： Kikuo Asada , Osamu Endo , Katsunori Nagao , Keisuke Hitoshio
CPC classification number: C22C38/02 , C21D8/10 , C21D9/08 , C21D9/14 , C21D2211/004 , C22C38/04 , F02M55/02 , F02M61/166 , F02M2200/03 , F02M2200/9053 , Y10S148/909
Abstract: To provide a steel pipe as a fuel injection pipe with high material strength, high internal pressure limit free from fatigue failure, prolonged fatigue life, and high reliability. A steel pipe as a fuel injection pipe of 500 N/mm2 or higher tensile strength comprising, by mass, C: 0.12 to 0.27%, Si: 0.05 to 0.40%, and Mn: 0.8 to 2.0%, and the balance being Fe and impurities, the contents of Ca, P, and S in the impurities being Ca: 0.001% or less, P: 0.02% or less, and S: 0.01% or less, respectively, characterized in that the maximum diameter of nonmetallic inclusions present in at least in a region extending from the inner surface of the steel pipe to a depth of 20 μm is 20 μm or less. Further, this steel pipe may contain, in place of a portion of Fe, at least one selected from among Cr: 1% or less, Mo: 1% or less, Ti: 0.04% or less, Nb: 0.04% or less, and V: 0.1% or less.
Abstract translation: 提供具有高材料强度的钢管作为燃料喷射管，没有疲劳破坏的高内压极限，延长的疲劳寿命和高可靠性。 作为500N / mm 2以上的拉伸强度的燃料喷射管的钢管，以质量计C：0.12〜0.27％，Si：0.05〜0.40％，Mn：0.8〜2.0％，余量为Fe， 杂质中Ca，P，S的含量分别为Ca：0.001％以下，P：0.02％以下，S：0.01％以下，其特征在于，非金属夹杂物的最大直径存在于 至少在从钢管的内表面延伸到20μm的深度的区域中，为20μm以下。 此外，该钢管可以含有选自Cr：1％以下，Mo：1％以下，Ti：0.04％以下，Nb：0.04％以下的至少一种，代替Fe的一部分， V：0.1％以下。
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公开(公告)号：US07568736B2
公开(公告)日：2009-08-04
申请号：US11127896
申请日：2005-05-12
Applicant: Kikuo Asada
Inventor： Kikuo Asada
IPC: F16L19/00
CPC classification number: F02M55/005 , F02M55/025 , F16L41/08 , F16L41/14
Abstract: A joint structure of a branch connector for a common rail capable of securing axial force applied to a seal surface and a branch connector and increasing bending fatigue strength of the branch connector is provided. In the joint structure of the branch connector for the common rail which includes a screw sleeve concentric with a bearing surface of a main pipe rail and connects a branch connector to the main pipe rail via a sleeve washer which has been externally fixed to the branch connector in advance to be combined therewith as one piece, a clearance is provided between an inner surface of the sleeve washer at an external opening thereof and an outer surface of the branch connector.
Abstract translation: 提供了一种用于共轨的分支连接器的连接结构，其能够确保施加到密封表面的轴向力和分支连接器，并且提高了分支连接器的弯曲疲劳强度。 在用于共轨的分支连接器的接头结构中，其包括与主管轨的轴承表面同心的螺旋套筒，并且通过套筒垫圈将分支连接器连接到主管轨道，套筒垫圈已经被外部固定到分支连接器 预先将其组合为一体，在套筒垫圈的外部开口的内表面和分支连接器的外表面之间设置间隙。
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14.发明授权公开(公告)号：US07275521B2
公开(公告)日：2007-10-02
申请号：US11153166
申请日：2005-06-15
Applicant: Masayoshi Usui , Kikuo Asada , Yasuaki Hashimoto , Hiroyuki Nishizawa , Iichiro Seino
Inventor： Masayoshi Usui , Kikuo Asada , Yasuaki Hashimoto , Hiroyuki Nishizawa , Iichiro Seino
CPC classification number: F02M55/005 , F02M55/02 , F02M55/025 , F16L41/14
Abstract: A joint structure connects a diverging branch pipe to a fuel rail for an internal combustion engine. The fuel rail is stainless steel or steel with rust prevention processing on at least the inner face. The diverging branch pipe is a double pipe with inner and outer pipes. The inner pipe has excellent rust preventing ability with respect to fuel on its inner face in comparison with the outer face of the outer pipe. The inner and outer pipes are connected by a nut for fastening through a joint fitting. A connecting seal portion of the diverging branch pipe and the joint fitting has rust preventing ability equal to that of the inner circumferential face of the diverging branch pipe. An entire liquid contact portion, including a seal face of the diverging branch pipe with respect to the fuel is covered with the inner pipe.
Abstract translation: 连接结构将发散支管连接到用于内燃机的燃料轨。 燃油轨至少在内表面上是不锈钢或防锈处理的钢。 分支管是具有内管和外管的双管。 内管与外管的外表面相比，内管上的燃料具有优异的防锈能力。 内管和外管通过螺母连接，用于通过接头配件紧固。 发散支管和接头配件的连接密封部分具有与发散分支管的内周面相同的防锈能力。 包括发散支管相对于燃料的密封面的整个液体接触部分被内管覆盖。
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公开(公告)号：US06918378B2
公开(公告)日：2005-07-19
申请号：US10616841
申请日：2003-07-10
Applicant: Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
Inventor： Masayoshi Usui , Kikuo Asada , Teruhisa Takahashi
IPC: F02M55/02
CPC classification number: F02M55/02 , F02M2200/8046 , F02M2200/8053 , F02M2200/9053 , F02M2200/9061 , Y10T29/49432
Abstract: In a high pressure fuel injection pipe, pipe extension and heat treatment are repeated by using a header manufactured by transformation induced plastic type strength steel. A process for depositing residual austenite is then performed, after which a final pipe extension process is performed, and the joint portion is molded and bending processing is performed without performing perfect annealing at the size of a product.
Abstract translation: 在高压燃油喷射管中，通过使用由转化诱导塑料型强度钢制成的集管重复管延伸和热处理。 然后进行用于沉积残余奥氏体的方法，然后进行最终的延伸过程，并且对接头部分进行成型，并且在不进行产品尺寸的完全退火的情况下执行弯曲加工。
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Patent Agency Ranking
公开(公告)号：US06213095B1
公开(公告)日：2001-04-10
申请号：US09033816
申请日：1998-03-03
Applicant: Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa
Inventor： Kikuo Asada , Masayoshi Usui , Eiji Watanabe , Kazunori Takikawa
IPC: F02M4100
CPC classification number: B21C37/29 , F02M55/025
Abstract: A common rail is provided for promoting inner pressure fatigue strength at location in proximity to a branch pipe. The common rail includes a main pipe rail with a main flow path. At least one boss in provided on the peripheral wall and includes a branch hole communicating the main flow path. The branch pipe is provided with a connecting head that has a pressing face at and end of the branch pipe. The pressing face of the branch pipe is urged into a pressure receiving seat of the boss. A compressive residual stress is provided at location in the peripheral wall where the main flow path of the main pipe rail communicates with the branch hole. The compressive residual stress increases the pressure fatigue strength by substantially canceling tensile stress.
Abstract translation: 提供了一种用于在分支管附近的位置处提高内部压力疲劳强度的共轨。 共轨包括具有主流路的主管道。 至少一个凸台设置在周壁上并且包括连通主流路的分支孔。 分支管设置有连接头，该连接头在分支管的端部和末端具有按压面。 分支管的按压面被推入凸台的受压座。 在主管道的主流路与分支孔连通的周壁的位置设有压缩残余应力。 通过基本上消除拉伸应力，压缩残余应力增加了压力疲劳强度。
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公开(公告)号：US5957507A
公开(公告)日：1999-09-28
申请号：US972883
申请日：1997-11-18
Applicant: Kikuo Asada
Inventor： Kikuo Asada
CPC classification number: F02M55/025 , F02M55/005 , F16L41/084 , F16L41/14 , Y10S285/906
Abstract: A joint structure for a branch connector in a common rail, comprising: a main pipe rail having a conduit therein on its axis and a plurality of through holes formed in its circumferential wall at an axial spacing, each of the through holes having a pressure receiving seat formed on the circumferential face thereof and opened to the outside; a branch connector having a conduit to communicate with the conduit of the main pipe rail and including a joint head formed at the end thereof and forming a pressure seat so that the branch connector is engaged with the main pipe rail by bringing the pressure seat thereof into abutment against the pressure receiving seat of the main pipe rail; a joint fitting mounted on the main pipe rail; and a nut assembled in advance in the branch connector and fastened into the joint fitting against the pressure of the joint head thereby to joint the branch connector to the main pipe. The joint fitting is made of a cylindrical sleeve nipple having a threaded face so that the branch connector is jointed to the main pipe rail by jointing the base end of the sleeve nipple to the outer circumference of the main pipe rail in the vicinity of the pressure receiving face.
Abstract translation: 一种用于共轨中的分支连接器的接头结构，包括：主管道，其主轴在其轴线上具有导管，多个通孔以轴向间隔形成在其周壁上，每个通孔具有压力接收 在其圆周面上形成并且向外部开口的座; 分支连接器，其具有与主管轨道的导管连通的导管，并且包括形成在其端部的接头，并形成压力座，使得分支连接器通过将其压力座进入主管轨道 抵靠主导轨的受压座; 安装在主管道上的接头配件; 以及螺母预先组装在分支连接器中并克服接头头部的压力紧固到接头配件中，从而将分支连接器接合到主管。 接头配件由具有螺纹面的圆柱形套筒接头制成，使得分支连接器通过将套筒接头的基端部接合到主管道的外周而在主管道上接合 接受面。
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18.发明申请公开(公告)号：US20050284447A1
公开(公告)日：2005-12-29
申请号：US11153166
申请日：2005-06-15
Applicant: Masayoshi Usui , Kikuo Asada , Yasuaki Hashimoto , Hiroyuki Nishizawa , Iichiro Seino
Inventor： Masayoshi Usui , Kikuo Asada , Yasuaki Hashimoto , Hiroyuki Nishizawa , Iichiro Seino
CPC classification number: F02M55/005 , F02M55/02 , F02M55/025 , F16L41/14
Abstract: A joint structure connects a diverging branch pipe to a fuel rail for an internal combustion engine. The fuel rail is stainless steel or steel with rust prevention processing on at least the inner face. The diverging branch pipe is a double pipe with inner and outer pipes. The inner pipe has excellent rust preventing ability with respect to fuel on its inner face in comparison with the outer face of the outer pipe. The inner and outer pipes are connected by a nut for fastening through a joint fitting. A connecting seal portion of the diverging branch pipe and the joint fitting has rust preventing ability equal to that of the inner circumferential face of the diverging branch pipe. An entire liquid contact portion, including a seal face of the diverging branch pipe with respect to the fuel is covered with the inner pipe.
Abstract translation: 连接结构将发散支管连接到用于内燃机的燃料轨。 燃油轨至少在内表面上是不锈钢或防锈处理的钢。 分支管是具有内管和外管的双管。 内管与外管的外表面相比，内管上的燃料具有优异的防锈能力。 内管和外管通过螺母连接，用于通过接头配件紧固。 发散支管和接头配件的连接密封部分具有与发散分支管的内周面相同的防锈能力。 包括发散支管相对于燃料的密封面的整个液体接触部分被内管覆盖。
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公开(公告)号：US20050275218A1
公开(公告)日：2005-12-15
申请号：US11127896
申请日：2005-05-12
Applicant: Kikuo Asada
Inventor： Kikuo Asada
CPC classification number: F02M55/005 , F02M55/025 , F16L41/08 , F16L41/14
Abstract: A joint structure of a branch connector for a common rail capable of securing axial force applied to a seal surface and a branch connector and increasing bending fatigue strength of the branch connector is provided. In the joint structure of the branch connector for the common rail which includes a screw sleeve concentric with a bearing surface of a main pipe rail and connects a branch connector to the main pipe rail via a sleeve washer which has been externally fixed to the branch connector in advance to be combined therewith as one piece, a clearance is provided between an inner surface of the sleeve washer at an external opening thereof and an outer surface of the branch connector.
Abstract translation: 提供了一种用于共轨的分支连接器的连接结构，其能够确保施加到密封表面的轴向力和分支连接器，并且提高了分支连接器的弯曲疲劳强度。 在用于共轨的分支连接器的接头结构中，其包括与主管轨的轴承表面同心的螺旋套筒，并且通过套筒垫圈将分支连接器连接到主管轨道，套筒垫圈已经被外部固定到分支连接器 预先将其组合为一体，在套筒垫圈的外部开口的内表面和分支连接器的外表面之间设置间隙。
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20.发明授权公开(公告)号：US06562484B2
公开(公告)日：2003-05-13
申请号：US09761901
申请日：2001-01-17
Applicant: Masayoshi Usui , Kikuo Asada
Inventor： Masayoshi Usui , Kikuo Asada
IPC: B32B1518
CPC classification number: B32B15/015 , Y10T428/12944 , Y10T428/12972
Abstract: A hot worked steel material, such as a bar, or tube, has a surface layer improving its fatigue strength despite the non-metallic inclusions which it may contain, or the cracks which it may have. The surface layer is formed by heating a nickel layer on the steel surface to cause the diffusion of nickel therethrough.
Abstract translation: 热处理钢材料如棒材或管材具有表面层，尽管其中可能含有非金属夹杂物，也可能具有裂纹，但其疲劳强度提高。 表面层是通过加热钢表面上的镍层而形成的，以使镍通过其扩散。
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