公开(公告)号：US08523625B2

公开(公告)日：2013-09-03

申请号：US13606381

申请日：2012-09-07

申请人： Tomonori Kanemaru ,  Osamu Yoshimoto ,  Takaaki Kikai ,  Masahiro Inoue

发明人： Tomonori Kanemaru ,  Osamu Yoshimoto ,  Takaaki Kikai ,  Masahiro Inoue

IPC分类号： H01J9/00

CPC分类号： H01T21/02 ,  H01T13/39

摘要： A method of manufacturing a spark plug wherein a tip having a burr-free surface is more reliably welded to a ground electrode, to thereby realize an excellent joint strength. The spark plug includes a center electrode, a ground electrode, and a ground-electrode-side tip joined to the ground electrode through its joining surface. The method of manufacturing includes a tip forming step and a tip joining step of resistance-welding the ground-electrode-side tip to the ground electrode. A wire rod having a reference surface is formed, and the wire rod is cut by moving a cutting blade from one edge of the reference surface with respect to the width direction thereof toward the other edge of the reference surface with respect to the width direction, thereby obtaining the ground-electrode-side tip. At least a portion of the reference surface is joined to the ground electrode, whereby that portion becomes the joining surface.

摘要翻译： 一种制造火花塞的方法，其中具有无毛刺表面的尖端更可靠地焊接到接地电极，从而实现优异的接合强度。 火花塞包括中心电极，接地电极和通过其接合面接合到接地电极的接地电极侧尖端。 制造方法包括将接地电极侧端子电阻焊接到接地电极的端部形成工序和端子接合工序。 形成具有参考表面的线材，并且通过相对于其宽度方向将基准面的一个边缘相对于宽度方向相对于基准表面的另一边缘移动切割刀片来切割线材， 从而获得接地电极侧端头。 基准面的至少一部分与接地电极接合，由此该部分成为接合面。

公开(公告)号：US08164242B2

公开(公告)日：2012-04-24

申请号：US12167387

申请日：2008-07-03

申请人： Osamu Yoshimoto ,  Kenji Nunome ,  Yoshihiro Nakai ,  Taichiro Nishikawa ,  Toru Tanji ,  Kazuo Yamazaki

发明人： Osamu Yoshimoto ,  Kenji Nunome ,  Yoshihiro Nakai ,  Taichiro Nishikawa ,  Toru Tanji ,  Kazuo Yamazaki

IPC分类号： H01T13/39 ,  H01T13/00

CPC分类号： H01T13/39 ,  H01T13/20

摘要： A spark plug (100) includes: a center electrode (2); and a ground electrode (30) which is to be exposed in a combustion chamber of an internal combustion engine and which forms a spark discharge gap with the center electrode (2), wherein at least one of the center electrode (20) and the ground electrode (30) contains an electrode material whose principal component is Ni and in which an intermetallic compound is precipitated at least intergranularly and intragranularly.

摘要翻译： 火花塞（100）包括：中心电极（2）; 以及将暴露在内燃机的燃烧室中并与中心电极（2）形成火花放电间隙的接地电极（30），其中中心电极（20）和地面中的至少一个 电极（30）包含主要成分为Ni的电极材料，其中金属间化合物至少在晶间和晶间析出。

公开(公告)号：US07550906B2

公开(公告)日：2009-06-23

申请号：US11071202

申请日：2005-03-04

申请人： Osamu Yoshimoto ,  Wataru Matsutani

发明人： Osamu Yoshimoto ,  Wataru Matsutani

IPC分类号： H01T13/20 ,  H01T21/02

CPC分类号： H01T13/39 ,  H01T21/02

摘要： A noble-metal chip (30, 90) joined to at least either a center electrode or a ground electrode, the center and ground electrodes forming a spark discharge gap, and having a circumferential edge of its facing end surface (31, 91) removed so as to form an edge-removed portion (32, 92). The edge-removal length is 0.01 mm or more and a ratio of the edge-removal length to a radius of the noble-metal chip is less than 0.3. The noble-metal chip is made of iridium or an alloy that contains iridium man amount of 70% by weight or more, and crystal grains constituting the noble-metal chip (30, 90) extends in the axial direction. Also disclosed is a method for manufacturing the spark plug.

摘要翻译： 已经连接到中心电极或接地电极中的至少一个的贵金属芯片（30,90），形成火花放电间隙的中心接地电极和接地电极，并且具有其相对端面（31,91）的周向边缘被去除 以形成边缘去除部分（32,92）。 边缘去除长度为0.01mm以上，边缘去除长度与贵金属芯片的半径的比例小于0.3。 贵金属片由铱或含有铱人数为70重量％以上的合金构成，构成贵金属片（30,90）的晶粒沿轴向延伸。 还公开了一种用于制造火花塞的方法。

公开(公告)号：US08866370B2

公开(公告)日：2014-10-21

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 ,  H01T13/32

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：US20140159564A1

公开(公告)日：2014-06-12

申请号：US14232639

申请日：2012-04-17

申请人： Daisuke Sumoyama ,  Osamu Yoshimoto

发明人： Daisuke Sumoyama ,  Osamu Yoshimoto

IPC分类号： H01T13/20

CPC分类号： H01T13/20 ,  F02P13/00 ,  H01T13/39

摘要： A spark plug having a center electrode; a ground electrode provided so as to form a gap between the ground electrode and the center electrode; and a tip provided on at least one of a distal end portion of the ground electrode and a front end portion of the center electrode, the end portions facing each other, characterized in that the tip contains an element group M (M consists of at least one species of Pt and Rh) in an amount of 3 mass % to 35 mass %, and an element group L (L consists of at least one species of Ir, Ru, and Pd) in an amount of 0 mass % to 15 mass %; the total amount of the element group M and the element group L is at most 35 mass %; and the total amount of Ni, the element group M, and the element group L is at least 94 mass %.

摘要翻译： 具有中心电极的火花塞; 接地电极，设置成在接地电极和中心电极之间形成间隙; 以及设置在所述接地电极的前端部和所述中心电极的前端部中的至少一个上的端部，所述端部彼此面对，其特征在于，所述端部包含元件组M（M至少包括 1质量％〜35质量％的Pt和Rh），元素组L（L由至少一种Ir，Ru和Pd组成）为0质量％〜15质量％ ％; 元素基团M和元素基团L的总量最多为35质量％。 Ni，元素基团M和元素基团L的总量为94质量％以上。

公开(公告)号：US08410673B2

公开(公告)日：2013-04-02

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： H01T13/28

CPC分类号： H01T13/39 ,  B23K35/322 ,  C22C5/04 ,  C22C19/058

摘要： A spark plug having a center electrode and a ground electrode including a ground electrode main body part having an end thereof facing the center electrode and a noble metal tip joined to the ground electrode main body part at a position facing a leading end of the center electrode, 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 an Ni alloy containing 12 to 45 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： 一种火花塞，其具有中心电极和接地电极，该火花塞具有接地电极主体部分，该接地电极主体部分的端部面向中心电极;以及贵金属电极头，其在面向中心电极前端的位置处接合到接地电极主体部分 在中心电极的前端和贵金属电极头之间形成有火花放电间隙，其中与贵金属电极头接合的接地电极主体部分的至少一部分由含有 12〜45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％以上的余量，其中，接合部和贵金属 尖端通过激光焊接或电子束焊接连接。

公开(公告)号：US20100242888A1

公开(公告)日：2010-09-30

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

IPC分类号： H01T13/20

CPC分类号： H01T13/39

摘要： In a spark plug having a precious metal tip joined to the front end portion of a ground electrode, the stable junction state of the precious metal tip is guaranteed for a long time. A precious metal tip 32 on the side of a ground electrode 27 is not directly joined to the front end portion of the ground electrode 27 but indirectly joined with a mounting part 51 interposed therebetween. The mounting part 51 includes a base part 53 which has a disc shape and is provided with a flange part 52 on its outer periphery and a protruding part 54 which protrudes from the base part 53 and has a columnar shape. First, in the state where the precious metal tip 32 is in contact with the protruding part 54 of the mounting part 51, laser welding or the like is performed thereon to form a fused part 42 and obtain a complex, and the base part 53 of the mounting part 51 is joined to a flat surface of the ground electrode 27 by resistance welding. The grain size of the grains of the mounting part 51 in the vicinity of the fused part 42 is smaller than the grain size of the grains thereof in the vicinity of the ground electrode 27, and the grain size of the grains of the flange part 52 of the mounting part 51 is smaller than the grain size of the grains of the protruding part 54.

摘要翻译： 在具有与接地电极的前端部连接的贵金属端头的火花塞中，能够长时间保证贵金属电极头的稳定连接状态。 接地电极27一侧的贵金属电极头32不直接接合到接地电极27的前端部，而是与插入其间的安装部51间接接合。 安装部51包括具有圆盘形状的基部53，并且在其外周上设置有凸缘部52，以及从基部53突出并具有柱状的突出部54。 首先，在贵金属端头32与安装部51的突出部54接触的状态下，进行激光焊接等来形成熔融部42并获得复合体，并且将基部53 安装部51通过电阻焊接与接地电极27的平坦面接合。 在熔接部42附近，安装部51的晶粒的粒径小于接地电极27附近的晶粒的粒径，凸缘部52的晶粒的粒径 的尺寸小于突出部54的晶粒的粒径。

公开(公告)号：US20060043855A1

公开(公告)日：2006-03-02

申请号：US10519075

申请日：2004-03-22

申请人： Kenji Nunome ,  Osamu Yoshimoto ,  Wataru Matsutani ,  Yoshihiro Matsubara

发明人： Kenji Nunome ,  Osamu Yoshimoto ,  Wataru Matsutani ,  Yoshihiro Matsubara

IPC分类号： H01T13/02

CPC分类号： H01T13/39 ,  B22F2998/10 ,  C22C1/0466 ,  B22F3/02 ,  B22F3/15

摘要： An object of the invention is to provide a higher-durability spark plug provided with a center electrode and a side electrode to form a spark discharge gap between the center electrode and the side electrode, at least one of the center electrode and the side electrode including a precious metal member facing the spark discharge gap, in which a sweating phenomenon of the precious metal member can be suppressed while spark abrasion, oxidation abrasion and abnormal abrasion of the precious metal member can be suppressed. In the invention, the spark plug (100) comprises a center electrode (3), and a side electrode (4) located on one side of the center electrode (3) so that a spark discharge gap (G) is formed between the center electrode (3) and the side electrode (4). The center electrode (3) and the side electrode (4) include first and second precious metal tips (33) and (43) respectively. The first and second precious metal tips (33) and (43) face the spark discharge gap (G) so that the spark discharge gap (G) is formed. The precious metal tips (33) and so on contain Ir as a main component, 0.3 mass % to 43 mass % of Rh, 5.2 mass % to 41 mass % of Ru, and 0.4 mass % to 19 mass % of Ni.

摘要翻译： 本发明的目的是提供一种具有中心电极和侧电极的高耐久性火花塞，以在中心电极和侧电极之间形成火花放电间隙，至少一个中心电极和侧电极包括 面对火花放电间隙的贵金属构件可以抑制贵金属构件的出汗现象，同时可以抑制贵金属构件的火花磨损，氧化磨损和异常磨损。 在本发明中，火花塞（100）包括中心电极（3）和位于中心电极（3）一侧的侧电极（4），使得在中心电极（3）之间形成火花放电间隙（G） 电极（3）和侧电极（4）。 中心电极（3）和侧电极（4）分别包括第一和第二贵金属尖端（33）和（43）。 第一和第二贵金属端头（33）和（43）面对火花放电间隙（G），从而形成火花放电间隙（G）。 贵金属制头（33）等含有Ir为主成分，Rh为0.3质量％〜43质量％，Ru为5.2质量％〜41质量％，Ni为0.4质量％〜19质量％。

公开(公告)号：US20050200255A1

公开(公告)日：2005-09-15

申请号：US11071202

申请日：2005-03-04

申请人： Osamu Yoshimoto ,  Wataru Matsutani

发明人： Osamu Yoshimoto ,  Wataru Matsutani

IPC分类号： C22C5/04 ,  H01T13/20 ,  H01T13/39 ,  H01T21/02

CPC分类号： H01T13/39 ,  H01T21/02

摘要： A noble-metal chip 30, 90 joined to at least either a center electrode or a ground electrode, the center and ground electrodes forming a spark discharge gap, and having a circumferential edge of its facing end surface 31, 91 removed so as to form an edge-removed portion 32, 92. The edge-removal length is 0.01 mm or more and a ratio of the edge-removal length to a radius of the noble-metal chip is less than 0.3. The noble-metal chip is made of iridium or an alloy that contains iridium in an amount of 70% by weight or more, and crystal grains constituting the noble-metal chip 30, 90 extends in the axial direction. Also disclosed is a method for manufacturing the spark plug.

摘要翻译： 接合到中心电极或接地电极中的至少一个的贵金属芯片30,90，形成火花放电间隙的中心电极和接地电极，并且具有其相对的端面31,91的周缘以便形成 边缘去除部分32,92。 边缘去除长度为0.01mm以上，边缘去除长度与贵金属芯片的半径的比例小于0.3。 贵金属片由铱或含有70重量％以上的铱的合金构成，构成贵金属片30,90的晶粒沿轴向延伸。 还公开了一种用于制造火花塞的方法。

公开(公告)号：US09027524B2

公开(公告)日：2015-05-12

申请号：US12735343

申请日：2008-12-24

申请人： Mamoru Musasa ,  Akira Suzuki ,  Osamu Yoshimoto

发明人： Mamoru Musasa ,  Akira Suzuki ,  Osamu Yoshimoto

IPC分类号： H01T13/39 ,  C22C1/04 ,  C22C5/04 ,  C22C9/00 ,  C22C19/03 ,  C22C32/00 ,  H01T13/32 ,  H01T21/02

CPC分类号： H01T13/39 ,  C22C1/0466 ,  C22C5/04 ,  C22C9/00 ,  C22C19/03 ,  C22C32/0021 ,  H01T13/32 ,  H01T21/02 ,  Y10T29/49002

摘要： A spark plug capable of preventing a separation of a noble metal tip and capable of extending a service-life of the spark plug.

摘要翻译： 一种能够防止贵金属电极头分离并能够延长火花塞使用寿命的火花塞。