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1. 发明授权

US08410673B2 Spark plug having a ground electrode of specific alloy composition to which a noble metal tip is joined 有权
标题翻译：具有接合有贵金属电极头的特定合金组成的接地电极的火花塞
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。

2. 发明申请

US20100242888A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：火花塞用于内燃机
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。

3. 发明授权

US08344604B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
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
IPC分类号： H01T13/20 , H01T21/02
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。

4. 发明申请

US20110163653A1 SPARK PLUG 有权
标题翻译： SPARK插头
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。

5. 发明授权

US09027524B2 Spark plug for internal combustion engine and method of manufacturing the same 有权
标题翻译：用于内燃机的火花塞及其制造方法
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。

6. 发明申请

US20100275869A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE AND METHOD OF MANUFACTURING THE SAME 有权
标题翻译：用于内燃机的火花塞及其制造方法
公开(公告)号：US20100275869A1
公开(公告)日：2010-11-04
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： H01T13/20 , H01S4/00
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。

7. 发明授权

US09343876B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US09343876B2
公开(公告)日：2016-05-17
申请号：US13984561
申请日：2012-02-13
申请人： Osamu Yoshimoto , Takehito Kuno , Tomoo Tanaka , Tomonori Kanemaru
发明人： Osamu Yoshimoto , Takehito Kuno , Tomoo Tanaka , Tomonori Kanemaru
IPC分类号： H01T13/06 , C22C19/05 , H01T13/20 , H01T13/39
CPC分类号： H01T13/06 , C22C19/05 , H01T13/20 , H01T13/39
摘要： A spark plug including a center electrode; an insulator; a metallic shell; and a ground electrode, wherein at least one of the center electrode and the ground electrode has thereon an intermediate member which connects the center electrode or the ground electrode to a noble metal tip. The intermediate member has a tip-bonding portion to which the noble metal tip is bonded, and an electrode-bonding portion which has a diameter greater than that of the tip-bonding portion, and which is bonded to the center electrode or the ground electrode. The intermediate member contains nickel (Ni) as a main component, and also contains chromium (Cr) in an amount of 15 to 25 wt. %. The intermediate member contains, in a surface portion thereof, silicon (Si) in an amount per unit volume of 0.04 mg/mm3 to 0.12 mg/mm3, and aluminum (Al) in an amount per unit volume of 0.03 mg/mm3 to 0.10 mg/mm3.
摘要翻译：一种包括中心电极的火花塞; 绝缘体金属壳; 和接地电极，其中中心电极和接地电极中的至少一个具有将中心电极或接地电极连接到贵金属电极头的中间部件。中间构件具有接合贵金属电极头的尖端接合部分和直径大于尖端接合部分直径的电极接合部分，并且接合到中心电极或接地电极。中间构件含有镍（Ni）作为主要成分，并且还含有15〜25重量％的铬（Cr）。％。中间部件的表面部分含有每单位体积的量为0.04mg / mm 3〜0.12mg / mm 3的硅（Si），每单位体积的铝（Al）为0.03mg / mm 3〜0.10 mg / mm3。

8. 发明授权

US08664842B2 Spark plug 有权
标题翻译：火花塞
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。

9. 发明授权

US08952601B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US08952601B2
公开(公告)日：2015-02-10
申请号：US13994778
申请日：2011-12-22
申请人： Takehito Kuno , Osamu Yoshimoto , Tomoo Tanaka
发明人： Takehito Kuno , Osamu Yoshimoto , Tomoo Tanaka
IPC分类号： H01T13/02 , C22C19/03 , H01T13/32 , H01T21/02 , C22C19/00 , H01T13/39
CPC分类号： H01T13/02 , B32B15/01 , B32B15/018 , C22C19/005 , C22C19/007 , C22C19/03 , H01T13/32 , H01T13/39 , H01T21/02
摘要： It is an object of the present invention to provide a spark plug having a ground electrode joined securely by electric resistance welding. The spark plug includes a cylindrical metal shell and a ground electrode joined by electric resistance welding to an end portion of the metal shell. The metal shell has a high hardness region formed with a Vickers hardness of 3×102 to 5×102 Hv in the end portion thereof in such a manner that the high hardness region, when viewed in cross section along a plane including an axis of the spark plug and an axis of the ground electrode, has a length d of 0.3 to 0.8 mm from a ground electrode side welding boundary to a metal shell side welding boundary in a direction of load applied during the electric resistance welding.
摘要翻译：本发明的目的是提供一种具有通过电阻焊接牢固地接合的接地电极的火花塞。火花塞包括圆柱形金属壳和通过电阻焊接到金属壳的端部的接地电极。该金属壳的高端硬度部分的硬度为维氏硬度3×102〜5×102Hv，其端部为高硬度区域，沿着包含轴线的平面的横截面火花塞和接地电极的轴线，在电阻焊接期间施加的负载方向上，距接地电极侧焊接边界至金属壳侧焊接边界的长度d为0.3〜0.8mm。

10. 发明申请

US20130293088A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20130293088A1
公开(公告)日：2013-11-07
申请号：US13994778
申请日：2011-12-22
申请人： Takehito Kuno , Osamu Yoshimoto , Tomoo Tanaka
发明人： Takehito Kuno , Osamu Yoshimoto , Tomoo Tanaka
IPC分类号： H01T13/02
CPC分类号： H01T13/02 , B32B15/01 , B32B15/018 , C22C19/005 , C22C19/007 , C22C19/03 , H01T13/32 , H01T13/39 , H01T21/02
摘要： It is an object of the present invention to provide a spark plug having a ground electrode joined securely by electric resistance welding. The spark plug includes a cylindrical metal shell and a ground electrode joined by electric resistance welding to an end portion of the metal shell. The metal shell has a high hardness region formed with a Vickers hardness of 3×102 to 5×102 Hv in the end portion thereof in such a manner that the high hardness region, when viewed in cross section along a plane including an axis of the spark plug and an axis of the ground electrode, has a length d of 0.3 to 0.8 mm from a ground electrode side welding boundary to a metal shell side welding boundary in a direction of load applied during the electric resistance welding.
摘要翻译：本发明的目的是提供一种具有通过电阻焊接牢固地接合的接地电极的火花塞。火花塞包括圆柱形金属壳和通过电阻焊接到金属壳的端部的接地电极。该金属壳的高端硬度部分的硬度为维氏硬度3×102〜5×102Hv，其端部为高硬度区域，沿着包含轴线的平面的横截面火花塞和接地电极的轴线，在电阻焊接期间施加的负载方向上，距接地电极侧焊接边界至金属壳侧焊接边界的长度d为0.3〜0.8mm。

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