公开(公告)号：US09768588B2

公开(公告)日：2017-09-19

申请号：US13877352

申请日：2011-10-06

申请人： Takaaki Kikai ,  Tomoo Tanaka ,  Tsutomu Shibata ,  Kaori Suzuki ,  Takehito Kuno

发明人： Takaaki Kikai ,  Tomoo Tanaka ,  Tsutomu Shibata ,  Kaori Suzuki ,  Takehito Kuno

IPC分类号： H01T13/39 ,  H01T13/32 ,  H01T21/02

CPC分类号： H01T13/39 ,  H01T13/32 ,  H01T21/02

摘要： A spark plug includes a ceramic insulator having an axial hole formed in an axis direction of the spark plug, a center electrode inserted in a front side of the axial hole, a metal shell disposed around the ceramic insulator and a ground electrode joined to a front end portion of the metal shell, wherein the ground electrode has a cross-sectional area of 2.0 mm2 or smaller in any arbitrary cross section thereof taken in a direction perpendicular to a center line of the ground electrode; the ground electrode is made of a metal material containing 93 mass % or more of nickel; and the ground electrode has a Vickers hardness of 130 to 260 Hv.

公开(公告)号：US20130200774A1

公开(公告)日：2013-08-08

申请号：US13877352

申请日：2011-10-06

申请人： Takaaki Kikai ,  Tomoo Tanaka ,  Tsutomu Shibata ,  Kaori Suzuki ,  Takehito Kuno

发明人： Takaaki Kikai ,  Tomoo Tanaka ,  Tsutomu Shibata ,  Kaori Suzuki ,  Takehito Kuno

IPC分类号： H01T13/39 ,  H01T21/02

CPC分类号： H01T13/39 ,  H01T13/32 ,  H01T21/02

摘要： A spark plug includes a ceramic insulator having an axial hole formed in an axis direction of the spark plug, a center electrode inserted in a front side of the axial hole, a metal shell disposed around the ceramic insulator and a ground electrode joined to a front end portion of the metal shell, wherein the ground electrode has a cross-sectional area of 2.0 mm2 or smaller in any arbitrary cross section thereof taken in a direction perpendicular to a center line of the ground electrode; the ground electrode is made of a metal material containing 93 mass % or more of nickel; and the ground electrode has a Vickers hardness of 130 to 260 Hv.

摘要翻译： 火花塞包括陶瓷绝缘体，其具有形成在火花塞的轴线方向的轴向孔，插入在轴向孔的前侧的中心电极，设置在陶瓷绝缘体周围的金属壳和接合到前面的接地电极 所述金属壳的端部，其中所述接地电极在与所述接地电极的中心线垂直的方向上的任意截面中的截面面积为2.0mm 2以下; 接地电极由含有93质量％以上的镍的金属材料制成; 接地电极的维氏硬度为130〜260Hv。

公开(公告)号：US08664842B2

公开(公告)日：2014-03-04

申请号：US13515627

申请日：2011-01-11

申请人： Tomoo Tanaka ,  Tsutomu Shibata ,  Osamu Yoshimoto ,  Takaaki Kikai ,  Takehito Kuno ,  Kenji Nunome

发明人： Tomoo Tanaka ,  Tsutomu Shibata ,  Osamu Yoshimoto ,  Takaaki Kikai ,  Takehito Kuno ,  Kenji Nunome

IPC分类号： H01T13/20 ,  H01T13/32 ,  H01T13/39 ,  H01T1/22

CPC分类号： H01T13/39 ,  H01T13/32

摘要： A spark plug including a center electrode and a ground electrode having a gap between the center electrode and the ground electrode, the ground electrode has an outer layer which is formed from an Ni-based alloy and a core portion which is covered by the outer layer and formed from a material having a thermal conductivity higher than that of the outer layer. Further, the melting point of the Ni-based alloy forming the outer layer is 1150° C. or more and 1350° C. or less.

摘要翻译： 一种火花塞，其包括中心电极和接地电极，所述接地电极在所述中心电极和所述接地电极之间具有间隙，所述接地电极具有由Ni基合金形成的外层和被所述外层覆盖的芯部分 并且由具有高于外层的热导率的材料形成。 此外，形成外层的Ni系合金的熔点为1150℃以上且1350℃以下。

公开(公告)号：US20120293061A1

公开(公告)日：2012-11-22

申请号：US13515627

申请日：2011-01-11

申请人： Tomoo Tanaka ,  Tsutomu Shibata ,  Osamu Yoshimoto ,  Takaaki Kikai ,  Takehito Kuno ,  Kenji Nunome

发明人： Tomoo Tanaka ,  Tsutomu Shibata ,  Osamu Yoshimoto ,  Takaaki Kikai ,  Takehito Kuno ,  Kenji Nunome

IPC分类号： H01T13/39

CPC分类号： H01T13/39 ,  H01T13/32

摘要： A spark plug including a center electrode and a ground electrode having a gap between the center electrode and the ground electrode, the ground electrode has an outer layer which is formed from an Ni-based alloy and a core portion which is covered by the outer layer and formed from a material having a thermal conductivity higher than that of the outer layer. Further, the melting point of the Ni-based alloy forming the outer layer is 1150° C. or more and 1350° C. or less.

摘要翻译： 一种火花塞，其包括中心电极和接地电极，所述接地电极在所述中心电极和所述接地电极之间具有间隙，所述接地电极具有由Ni基合金形成的外层和被所述外层覆盖的芯部分 并且由具有高于外层的热导率的材料形成。 此外，形成外层的Ni系合金的熔点为1150℃以上且1350℃以下。

公开(公告)号：US08283846B2

公开(公告)日：2012-10-09

申请号：US13259219

申请日：2010-10-15

申请人： Tsutomu Shibata ,  Takehito Kuno ,  Tomoo Tanaka ,  Kenji Nunome ,  Shoichiro Nagatomo

发明人： Tsutomu Shibata ,  Takehito Kuno ,  Tomoo Tanaka ,  Kenji Nunome ,  Shoichiro Nagatomo

IPC分类号： H01T13/20 ,  F02P13/00

CPC分类号： H01T13/39 ,  C22C19/058

摘要： The object of the invention is to provide a spark plug including a central electrode and/or a ground electrode with a gap, which can suppress generation of corrosion-like generated foreign substances while maintaining high thermal conductivity and high strength. The gap between the central electrode and the ground electrode with at least one of the central electrode and the ground electrode formed from an electrode material including 96% by mass or more of Ni, in which the electrode material includes a total content of from 0.05% by mass to 0.45% by mass of at least one selected from a group consisting of Y and rare earth elements, 0.05% by mass or more of Mn, and a total content of 0.01% by mass or more of at least one selected from a group consisting of Ti, V, and Nb, and the ratio (a/b) of the total content (a) of Ti, V, and Nb to the content (b) of Mn is from 0.02 to 0.40.

摘要翻译： 本发明的目的是提供一种火花塞，其包括具有间隙的中心电极和/或接地电极，其可以在保持高导热性和高强度的同时抑制腐蚀状产生的异物的产生。 中心电极和接地电极之间的间隙由中心电极和接地电极中的至少一个由包含96质量％以上的Ni的电极材料形成，其中电极材料的总含量为0.05％ 以质量计至0.45质量％的选自Y和稀土元素中的至少一种，Mn为0.05质量％以上，总含量为0.01质量％以上的至少一种选自 由Ti，V和Nb组成的组中，Ti，V和Nb的总含量（a）与Mn的含量（b）的比（a / b）为0.02〜0.40。

公开(公告)号：US20120013241A1

公开(公告)日：2012-01-19

申请号：US13259219

申请日：2010-10-15

申请人： Tsutomu Shibata ,  Takehito Kuno ,  Tomoo Tanaka ,  Kenji Nunome ,  Shoichiro Nagatomo

发明人： Tsutomu Shibata ,  Takehito Kuno ,  Tomoo Tanaka ,  Kenji Nunome ,  Shoichiro Nagatomo

IPC分类号： H01T13/39

CPC分类号： H01T13/39 ,  C22C19/058

摘要： The object of the invention is to provide a spark plug including a central electrode and/or a ground electrode, which can suppress generation of corrosion-like generated foreign substances while maintaining high thermal conductivity and high strength.The spark plug according to the invention is a spark plug including a central electrode and a ground electrode provided to have a gap between the central electrode and the ground electrode with at least one of the central electrode and the ground electrode formed from an electrode material including 96% by mass or more of Ni, in which the electrode material includes a total content of from 0.05% by mass to 0.45% by mass of at least one selected from a group consisting of Y and rare earth elements, 0.05% by mass or more of Mn, and a total content of 0.01% by mass or more of at least one selected from a group consisting of Ti, V, and Nb, and the ratio (a/b) of the total content (a) of Ti, V, and Nb to the content (b) of Mn is from 0.02 to 0.40.

摘要翻译： 本发明的目的是提供一种包括中心电极和/或接地电极的火花塞，其能够在保持高导热性和高强度的同时抑制腐蚀状产生的异物的产生。 根据本发明的火花塞是火花塞，其包括中心电极和接地电极，设置成在中心电极和接地电极之间具有间隙，中心电极和接地电极中的至少一个由电极材料形成，包括 96质量％以上的Ni，其中电极材料的总含量为0.05质量％至0.45质量％的选自Y和稀土元素中的至少一种，0.05质量％或 更多的Mn，以及选自Ti，V和Nb中的至少一种的0.01质量％以上的总含量，Ti的总含量（a）的比（a / b） V和Nb相对于Mn的含量（b）为0.02〜0.40。

公开(公告)号：US20120256530A1

公开(公告)日：2012-10-11

申请号：US13516874

申请日：2011-01-19

申请人： Tsutomu Shibata ,  Takaaki Kikai ,  Kenji Nunome ,  Osamu Yoshimoto

发明人： Tsutomu Shibata ,  Takaaki Kikai ,  Kenji Nunome ,  Osamu Yoshimoto

IPC分类号： H01T13/39

CPC分类号： H01T13/39 ,  H01T13/32

摘要： A spark plug including a center electrode and a ground electrode having a core portion and an outer layer covering the core portion, the core portion being formed from a material having a thermal conductivity higher than that of the outer layer. At least a portion in which thickness of the outer layer is 0.5 mm or less is present at a cross-section perpendicular to a direction in which the ground electrode is extended. Further, the composition of the electrode material forming the outer layer is as follows: Ni is 96 mass % or more, total of at least one kind selected from Y and rare earth elements is 0.05 mass % or more, Al is 0.5 mass % or less, and Si is 0.5 mass % or more and 1.5 mass % or less, where the total of Ni, Y, rare earth elements, Al, Si does not exceed 100 mass %.

摘要翻译： 一种火花塞，其包括中心电极和接地电极，所述接地电极具有芯部和覆盖所述芯部的外层，所述芯部由导热率高于外层的材料形成。 在与接地电极延伸的方向垂直的截面上存在至少一部分外层的厚度为0.5mm以下的部分。 此外，形成外层的电极材料的组成如下：Ni为96质量％以上，选自Y和稀土元素中的至少一种的总和为0.05质量％以上，Al为0.5质量％以上 较少，Si为0.5质量％以上且1.5质量％以下，其中，Ni，Y，稀土类元素Al，Si的合计量不超过100质量％。

公开(公告)号：US08853928B2

公开(公告)日：2014-10-07

申请号：US13824058

申请日：2011-08-24

申请人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

发明人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

IPC分类号： H01T13/39 ,  C22C19/03 ,  C22C49/08 ,  H01T13/16 ,  H01T21/02 ,  C22C26/00 ,  C22C32/00 ,  C22C19/05

CPC分类号： H01T13/39 ,  C22C19/03 ,  C22C19/058 ,  C22C26/00 ,  C22C32/0084 ,  C22C49/08 ,  C22C2026/002 ,  H01T13/16 ,  H01T21/02

摘要： A spark plug includes at least one of a center electrode or a ground electrode that is produced by the steps of: mixing a matrix metal with carbon so that the carbon content of the resultant mixture is adjusted to 80 vol. % or less; subjecting the mixture to powder compacting or sintering, to thereby form a core; placing the core in a cup formed of nickel or a metal containing nickel as a main component; and subjecting the cup to cold working. The thus-produced electrode exhibits favorable thermal conductivity and good heat dissipation, by virtue of the small difference in thermal expansion coefficient between the core and an outer shell. The spark plug including the above electrode exhibits excellent durability.

摘要翻译： 火花塞包括通过以下步骤制造的中心电极或接地电极中的至少一个：将基质金属与碳混合，使得所得混合物的碳含量调节至80体积％。 ％ 或更少; 使混合物进行粉末压实或烧结，从而形成芯; 将芯放置在由镍或以镍为主要成分的金属形成的杯中; 并对杯子进行冷加工。 由于芯和外壳之间的热膨胀系数差小，所以这样制作的电极表现出良好的导热性和良好的散热性。 包括上述电极的火花塞具有优异的耐久性。

公开(公告)号：US08729783B2

公开(公告)日：2014-05-20

申请号：US13824205

申请日：2011-08-24

申请人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

发明人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

IPC分类号： H01T13/20

CPC分类号： H01T13/39 ,  C22C1/02 ,  C22C9/00 ,  C22C19/05 ,  C22C32/0021 ,  C22C32/0084 ,  C22C49/02 ,  C22C49/14 ,  H01T13/20 ,  H01T21/02

摘要： A spark plug is provided having at least one of a center electrode or a ground electrode. The electrode comprises: a core formed of a composite material containing a matrix metal, the matrix metal being copper or a metal containing copper as a main component, and carbon dispersed in the matrix metal in an amount of 10 to 80 vol. %, the carbon having a thermal conductivity higher than that of the matrix metal. The electrode also contains an outer shell which surrounds the core and which is formed of nickel or a metal containing nickel as a main component. The thus-produced electrode exhibits favorable thermal conductivity and good heat dissipation, by virtue of the small difference in thermal expansion coefficient between the core and an outer shell. The spark plug including the above electrode exhibits excellent durability.

摘要翻译： 提供具有中心电极或接地电极中的至少一个的火花塞。 电极包括：由包含基质金属，基质金属为铜或以铜为主要成分的金属的复合材料形成的芯和分散在基体金属中的碳，其量为10至80体积％。 ％，导热率高于基体金属的导热率。 电极还包含围绕芯的外壳，其由镍或以镍为主要成分的金属形成。 由于芯和外壳之间的热膨胀系数差小，所以这样制作的电极表现出良好的导热性和良好的散热性。 包括上述电极的火花塞具有优异的耐久性。

公开(公告)号：US20130181596A1

公开(公告)日：2013-07-18

申请号：US13824058

申请日：2011-08-24

申请人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

发明人： Tomo-o Tanaka ,  Tsutomu Shibata ,  Takaaki Kikai

IPC分类号： H01T13/39 ,  H01T21/02

CPC分类号： H01T13/39 ,  C22C19/03 ,  C22C19/058 ,  C22C26/00 ,  C22C32/0084 ,  C22C49/08 ,  C22C2026/002 ,  H01T13/16 ,  H01T21/02

摘要： A spark plug includes at least one of a center electrode or a ground electrode that is produced by the steps of: mixing a matrix metal with carbon so that the carbon content of the resultant mixture is adjusted to 80 vol. % or less; subjecting the mixture to powder compacting or sintering, to thereby form a core; placing the core in a cup formed of nickel or a metal containing nickel as a main component; and subjecting the cup to cold working. The thus-produced electrode exhibits favorable thermal conductivity and good heat dissipation, by virtue of the small difference in thermal expansion coefficient between the core and an outer shell. The spark plug including the above electrode exhibits excellent durability.

摘要翻译： 火花塞包括通过以下步骤制造的中心电极或接地电极中的至少一个：将基质金属与碳混合，使得所得混合物的碳含量调节至80体积％。 ％ 或更少; 使混合物进行粉末压实或烧结，从而形成芯; 将芯放置在由镍或以镍为主要成分的金属形成的杯中; 并对杯子进行冷加工。 由于芯和外壳之间的热膨胀系数差小，所以这样制作的电极表现出良好的导热性和良好的散热性。 包括上述电极的火花塞具有优异的耐久性。