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公开(公告)号：US08624475B2
公开(公告)日：2014-01-07
申请号：US13518126
申请日：2011-08-08
申请人： Takuya Shimamura , Tomoaki Kato , Jiro Kyuno , Naomichi Miyashita
发明人： Takuya Shimamura , Tomoaki Kato , Jiro Kyuno , Naomichi Miyashita
IPC分类号： H01T13/00
CPC分类号： H01T13/36
摘要： Disclosed is a spark plug having an insulator with good breakage resistance. A spark plug 1 contains a ceramic insulator 2, a plate packing 22 and a metal shell 3. The ceramic insulator 2 has, on an outer circumferential surface thereof, a step portion 14, a leg portion 13 and a curved surface portion 31 between the step portion 14 and the leg portion 13. The metal shell 3 has, on an inner circumferential surface thereof, a taper portion 21. The ceramic insulator 2 is fixed in the metal shell 3 with the step portion 14 retained on the taper portion 21 via the plate packing 22. Herein, 50% or more of an inner circumferential edge portion IP of the plate packing 22 is in contact with a part of the ceramic insulator 2 located front of a middle region CP of the curved surface portion 31.
摘要翻译： 本发明公开了具有耐破坏性好的绝缘体的火花塞。 火花塞1包含陶瓷绝缘体2，板状填料22和金属壳3.陶瓷绝缘体2在其外周面上具有台阶部14，脚部13和弯曲面31 台阶部分14和腿部13.金属壳体3在其内圆周表面上具有锥形部分21.陶瓷绝缘体2固定在金属壳体3中，台阶部分14被保持在锥形部分21上，经由 这里，板状填料22的内周缘部IP的50％以上与位于曲面部31的中间区域CP的前方的陶瓷绝缘体2的一部分接触。
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公开(公告)号：US20120267995A1
公开(公告)日：2012-10-25
申请号：US13518126
申请日：2011-08-08
申请人： Takuya Shimamura , Tomoaki Kato , Jiro Kyuno , Naomichi Miyashita
发明人： Takuya Shimamura , Tomoaki Kato , Jiro Kyuno , Naomichi Miyashita
IPC分类号： H01T13/20
CPC分类号： H01T13/36
摘要： Disclosed is a spark plug having an insulator with good breakage resistance. A spark plug 1 contains a ceramic insulator 2, a plate packing 22 and a metal shell 3. The ceramic insulator 2 has, on an outer circumferential surface thereof, a step portion 14, a leg portion 13 and a curved surface portion 31 between the step portion 14 and the leg portion 13. The metal shell 3 has, on an inner circumferential surface thereof, a taper portion 21. The ceramic insulator 2 is fixed in the metal shell 3 with the step portion 14 retained on the taper portion 21 via the plate packing 22. Herein, 50% or more of an inner circumferential edge portion IP of the plate packing 22 is in contact with a part of the ceramic insulator 2 located front of a middle region CP of the curved surface portion 31.
摘要翻译： 本发明公开了具有耐破坏性好的绝缘体的火花塞。 火花塞1包含陶瓷绝缘体2，板状填料22和金属壳3.陶瓷绝缘体2在其外周面上具有台阶部14，脚部13和弯曲面31 台阶部分14和腿部13.金属壳体3在其内圆周表面上具有锥形部分21.陶瓷绝缘体2固定在金属壳体3中，台阶部分14被保持在锥形部分21上，经由 这里，板状填料22的内周缘部IP的50％以上与位于曲面部31的中间区域CP的前方的陶瓷绝缘体2的一部分接触。
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公开(公告)号：US20130015756A1
公开(公告)日：2013-01-17
申请号：US13638703
申请日：2011-03-28
申请人： Yuichi Yamada , Hiroaki Kuki , Naomichi Miyashita , Jiro Kyuno
发明人： Yuichi Yamada , Hiroaki Kuki , Naomichi Miyashita , Jiro Kyuno
IPC分类号： H01T13/20
CPC分类号： H01T13/36
摘要： A spark plug having an insulator with improved breakage resistance. The spark plug has a cross-section that satisfies the following relationship: 0.6 mm
摘要翻译： 具有绝缘体的火花塞具有改善的耐断裂性。 火花塞具有满足以下关系的截面：0.6mm <= L，其中A表示绝缘体的支撑部分与形成在前端侧的绝缘体主体部分之间的连接点相对于支撑部分 其中B表示在支撑部分和填料彼此接触的接触部分的最内部位置（a）的位置之间更靠近外周侧的位置，以及（b）支撑部分和 平行于火花塞的轴线并从金属壳的阶梯部分的最内圆周端延伸的虚拟直线，其中L表示从点A到点B的路径的长度 绝缘体。
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公开(公告)号：US08664843B2
公开(公告)日：2014-03-04
申请号：US13638703
申请日：2011-03-28
申请人： Yuichi Yamada , Hiroaki Kuki , Naomichi Miyashita , Jiro Kyuno
发明人： Yuichi Yamada , Hiroaki Kuki , Naomichi Miyashita , Jiro Kyuno
IPC分类号： H01T13/20
CPC分类号： H01T13/36
摘要： A spark plug having an insulator with improved breakage resistance. The spark plug has a cross-section that satisfies the following relationship: 0.6 mm
摘要翻译： 具有绝缘体的火花塞具有改善的耐断裂性。 火花塞具有满足以下关系的横截面：0.6mm <= L，其中“A”表示绝缘体的支撑部分与形成在前端侧的绝缘体主体部分之间的连接点相对于 支撑部分，其中“B”表示在支撑部分和填料彼此接触的接触部分的最内部位置（a）的位置之间更靠近外周侧的位置，以及（b） 支撑部分和虚拟直线，其平行于火花塞的轴线并从金属壳的台阶部分的最内圆周端延伸，并且其中“L”表示从“A”的路径的长度 “沿着绝缘体的表面指向”B“。
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公开(公告)号：US20110294369A1
公开(公告)日：2011-12-01
申请号：US13146816
申请日：2010-01-27
IPC分类号： H01R13/02
摘要： The present invention provides a spark plug which is capable of suppressing a occurrence of crack and separation by determining a structural configuration of a melting portion formed in a junction portion between a discharge portion and a pedestal portion which form an ignition portion that protrudes from a ground electrode. In a profile line shape of a cross section including a center axis P of an ignition portion 80, an exposure surface 88 of a melting portion 83 connects a side surface 82 of a discharge portion 81 and a side surface 85 of a pedestal portion 84. Further, an exterior angle θ formed between an imaginary line Q, which passes through a boundary position X1 between the melting portion 83 and the pedestal portion 84 and a boundary position X2 between the melting portion 83 and the discharge portion 81, and the center axis P at a node C, satisfies 135°≦θ≦175°. Furthermore, a proportion T/S of a forming depth T of the melting portion 83 to an outside diameter S of the discharge portion 81 satisfies T/S≧0.5.
摘要翻译： 本发明提供一种火花塞，其能够通过确定在形成从地面突出的点火部的排出部和基座部之间的接合部中形成的熔融部的结构构造来抑制裂纹和分离的发生 电极。 在包括点火部分80的中心轴线P的截面的轮廓线形状中，熔化部分83的暴露表面88连接排出部分81的侧表面82和基座部分84的侧表面85。 此外，外角＆thetas; 形成在通过熔融部83与基座部84之间的边界位置X1的虚拟线Q与熔融部83与排出部81之间的边界位置X2以及节点C的中心轴P之间， 满足135°＆nlE;＆thetas;＆nlE; 175°。 此外，熔融部83的成形深度T与排出部81的外径S的比例T / S满足T /S≥0.5。
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公开(公告)号：US08476817B2
公开(公告)日：2013-07-02
申请号：US13146816
申请日：2010-01-27
IPC分类号： H01T13/20
摘要： The present invention provides a spark plug which is capable of suppressing a occurrence of crack and separation by determining a structural configuration of a melting portion formed in a junction portion between a discharge portion and a pedestal portion which form an ignition portion that protrudes from a ground electrode. In a profile line shape of a cross section including a center axis P of an ignition portion 80, an exposure surface 88 of a melting portion 83 connects a side surface 82 of a discharge portion 81 and a side surface 85 of a pedestal portion 84. Further, an exterior angle θ formed between an imaginary line Q, which passes through a boundary position X1 between the melting portion 83 and the pedestal portion 84 and a boundary position X2 between the melting portion 83 and the discharge portion 81, and the center axis P at a node C, satisfies 135°≦θ≦175°. Furthermore, a proportion T/S of a forming depth T of the melting portion 83 to an outside diameter S of the discharge portion 81 satisfies T/S≧0.5.
摘要翻译： 本发明提供一种火花塞，其能够通过确定在形成从地面突出的点火部的排出部和基座部之间的接合部中形成的熔融部的结构构造来抑制裂纹和分离的发生 电极。 在包括点火部分80的中心轴线P的截面的轮廓线形状中，熔化部分83的暴露表面88连接排出部分81的侧表面82和基座部分84的侧表面85。 此外，在通过熔融部83和基座部84之间的边界位置X1的虚拟线Q与熔化部83与排出部81之间的边界位置X2之间形成的外角θ和中心轴 P在节点C处满足135°@ @ @ 175°。 此外，熔融部83的成形深度T与排出部81的外径S的比例T / S满足T /S≥0.5。
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公开(公告)号：US08044562B2
公开(公告)日：2011-10-25
申请号：US12741764
申请日：2008-11-12
IPC分类号： H01T13/20
CPC分类号： H01T13/39
摘要： There is provided a spark section (80) of needle-like shape protruding from an inner surface (33) of a ground electrode (30) to define a spark gap between the spark section and an electrode tip on a center electrode. The spark section (80) has a noble metal member (81) and an intermediate member (86) joined to each other. The materials of the noble metal member (81) and the intermediate member (86) are selected in such a manner that the thermal conductivity of the intermediate member (86) is lower than that of the noble metal member (81). This limits heat radiation through the heat radiation passage from the noble metal member (81) through the intermediate member (86) to the ground electrode (30) so as to maintain the noble metal member (81) at a higher temperature than conventional types and reduce a quenching effect of the noble metal member (81) on a flame core generated in the spark gap for improvement in ignition performance.
摘要翻译： 设置从接地电极（30）的内表面（33）突出的针状的火花部（80），以在火花部和中心电极上的电极尖之间限定火花隙。 火花部（80）具有彼此接合的贵金属部件（81）和中间部件（86）。 选择贵金属构件（81）和中间构件（86）的材料，使得中间构件（86）的导热率低于贵金属构件（81）的导热率。 这就限制了通过从贵金属构件（81）穿过中间构件（86）到接地电极（30）的散热通道的热辐射，以便将贵金属构件（81）保持在比常规类型更高的温度 降低贵金属构件（81）对火花隙中产生的火焰核心的淬火效果，以提高点火性能。
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公开(公告)号：US08344604B2
公开(公告)日：2013-01-01
申请号：US12743092
申请日：2008-11-13
申请人： Kazuyoshi Torii , Naomichi Miyashita , Mamoru Musasa , Akira Suzuki , Tomoo Tanaka , Osamu Yoshimoto
发明人： Kazuyoshi Torii , Naomichi Miyashita , Mamoru Musasa , Akira Suzuki , Tomoo Tanaka , Osamu Yoshimoto
CPC分类号： H01T13/39
摘要： A precious metal tip on the side of a ground electrode is indirectly joined to the front end portion of the ground electrode via a mounting part interposed therebetween. The mounting part includes a base part and a protruding part. First, in the state where the precious metal tip is in contact with the protruding part, laser welding or the like is performed thereon to form a fused part and obtain a complex, and the base part is joined to a flat surface of the ground electrode by resistance welding. The grain size of grains of the mounting part in the vicinity of the of the fused part is greater than the grain size of the grain size of the grains thereof in the vicinity of the ground electrode, and the grain size of the grains of the flange part of the mounting part is smaller than the grain size of the grains of the protruding part.
摘要翻译： 接地电极侧的贵金属端头经由插入其间的安装部分间接地接合到接地电极的前端部。 安装部分包括基部和突出部。 首先，在贵金属端头与突出部接触的状态下，进行激光焊接等，形成熔融部，得到复合体，基部与接地电极的平坦面接合 通过电阻焊接。 熔融部附近的安装部的晶粒尺寸大于接地电极附近的晶粒的晶粒尺寸，凸缘的晶粒的粒径 安装部的一部分小于突出部的晶粒的粒径。
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公开(公告)号：US20110163653A1
公开(公告)日：2011-07-07
申请号：US13062571
申请日：2009-09-09
申请人： Kazuyoshi Torii , Tomoo Tanaka , Akira Suzuki , Mamoru Musasa , Naomichi Miyashita , Osamu Yoshimoto
发明人： Kazuyoshi Torii , Tomoo Tanaka , Akira Suzuki , Mamoru Musasa , Naomichi Miyashita , Osamu Yoshimoto
IPC分类号： H01T13/20
CPC分类号： H01T13/39 , B23K35/322 , C22C5/04 , C22C19/058
摘要： A spark plug includes a cylindrical metal shell; a cylindrical insulator that is held in the metal shell; a center electrode; and a ground electrode that comprises a ground electrode main body part and a noble metal tip, a spark discharge gap being formed between the leading end of the center electrode and the noble metal tip wherein at least a portion of the ground electrode main body part, to which the noble metal tip is joined, is made of Ni alloy containing 12 to 35 mass % of Cr, 7 mass % or less of Fe, 0.5 to 5 mass % of Al, 0.3 to 5 mass % of Si and 50 mass % or more of the balance, and wherein the joined portion and the noble metal tip are joined by laser welding or electron beam welding.
摘要翻译： 火花塞包括圆柱形金属壳; 保持在金属外壳中的圆柱形绝缘体; 中心电极; 以及接地电极，其包括接地电极主体部分和贵金属电极头，在所述中心电极的前端与所述贵金属电极头之间形成火花放电间隙，其中所述接地电极主体部分的至少一部分， 贵金属电极头接合的Ni合金由含有12〜35质量％的Cr，7质量％以下的Fe，0.5〜5质量％的Al，0.3〜5质量％的Si和50质量％的Ni合金构成， 或更多的平衡，并且其中通过激光焊接或电子束焊接将接合部分和贵金属电极头接合。
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公开(公告)号：US20130169141A1
公开(公告)日：2013-07-04
申请号：US13813774
申请日：2011-07-29
IPC分类号： H01T13/08
CPC分类号： H01T13/08 , F16J15/0881 , F16J15/0887 , F16J15/0893
摘要： In process of threadably fitting a metal shell having a surface formed with an Ni plated layer into a mounting hole, in a state where a gasket made of stainless steel is uncompressed while being interposed between a protrusion part and an opening periphery, a surface of the gasket is out of contact with another surface thereof. When the gasket is viewed on a cross section in a direction of an axial line O, the gasket contacts with the protrusion part at one point of a point X, the gasket contacts with the opening periphery at one point of a point Y, and the point Y is located outside of the point X in a radial direction. Further, the point Y is located inside of a maximum outer diameter Dz of a seating surface of the protrusion part in the radial direction.
摘要翻译： 在将具有形成有Ni镀层的表面的金属壳螺纹连接到安装孔中的过程中，在由不锈钢制成的垫圈未被压缩同时插入在突出部和开口周边之间的状态下， 垫圈与其另一表面脱离接触。 当在轴线O的方向上的横截面上观察垫圈时，垫圈在点X的一个点处与突出部接触，垫圈在点Y的一个点处与开口周边接触，并且 点Y位于点X的径向外侧。 此外，点Y位于突出部的径向的座面的最大外径Dz的内侧。
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