公开(公告)号：US5461276A

公开(公告)日：1995-10-24

申请号：US371577

申请日：1995-01-12

申请人： Wataru Matsutani ,  Junichi Kagawa

发明人： Wataru Matsutani ,  Junichi Kagawa

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

CPC分类号： H01T13/39 ,  H01T21/02

摘要： In an electrode for a spark plug, an elongated blank metal is made of a nickel-based alloy and including a front surface. A firing tip is provided from a slug made of a noble metal, the slug being concentrically placed on the front surface of the elongated blank metal and laser beam welded to thermally melt the entire slug and thereby produce a thermal weld, so that the front surface of the elongated blank metal is partly fused together with the slug to form a melted portion with the front surface and the slug so as to contain the front surface within the melted portion in the range of 0.5 wt % to 80.0 wt %.

摘要翻译： 在用于火花塞的电极中，细长的坯料由镍基合金制成并且包括前表面。 从由贵金属制成的芯块提供击发尖端，该芯块被同心地放置在细长的坯料金属的前表面上，焊接的激光束热熔融整个芯块，从而产生热焊接，从而使前表面 细长的空白金属部分地与块状地熔合在一起，以与前表面和块状物形成熔融部分，以便将熔融部分内的前表面包含在0.5重量％至80.0重量％的范围内。

公开(公告)号：US5461210A

公开(公告)日：1995-10-24

申请号：US265003

申请日：1994-06-24

申请人： Wataru Matsutani ,  Junichi Kagawa

发明人： Wataru Matsutani ,  Junichi Kagawa

IPC分类号： H01T13/20 ,  H01T13/39 ,  H01T21/02 ,  B23K26/00

CPC分类号： H01T13/39 ,  H01T21/02

摘要： A method of manufacturing a spark plug electrode, wherein a composite column is provided to have a heat-conductor core embedded in a metallic clad by means of extrusion. A firing tip is provided from a slug which is made of a noble metal. The slug is concentrically placed on an end surface of the metallic clad, and a laser beam welding is applied on the slug to thermally melt the entire the slug so that the end surface of the metallic clad is partly fused into the slug in the range of 0.5 wt % to 80.0 wt %.

摘要翻译： 一种制造火花塞电极的方法，其中复合柱被设置成通过挤出将热导体芯嵌入金属包层中。 从由贵金属制成的块状物提供点火尖。 将芯块同心地放置在金属包层的端面上，并且将激光束焊接施加到芯块上以使整个芯块热熔融，使得金属覆层的端表面部分地熔合到芯块的范围内 0.5重量％〜80.0重量％。

公开(公告)号：US08152979B2

公开(公告)日：2012-04-10

申请号：US12170824

申请日：2008-07-10

申请人： Satoshi Sugaya ,  Hiroyuki Nishiyama ,  Wataru Matsutani ,  Shiro Kakimoto

发明人： Satoshi Sugaya ,  Hiroyuki Nishiyama ,  Wataru Matsutani ,  Shiro Kakimoto

IPC分类号： G01N27/406

CPC分类号： G01N27/4075 ,  G01N33/0054 ,  Y02A50/246

摘要： An ammonia gas sensor including a reference electrode (320) is formed on the back surface of a solid electrolyte member (310), and a detection electrode (335) is formed on the front surface of the solid electrolyte member (310). A detection lead (350) is provided on the front surface of the solid electrolyte member (310) such that the detection lead (350) is connected to the detection electrode (335). An insulating layer (340), (380) is provided between the detection lead (350) and the solid electrolyte member (310), or on the detection lead (350).

摘要翻译： 在固体电解质构件（310）的背面形成有包括参考电极（320）的氨气传感器，在固体电解质构件（310）的前表面上形成有检测电极（335）。 检测引线（350）设置在固体电解质部件（310）的前表面上，使得检测引线（350）连接到检测电极（335）。 在检测引线（350）和固体电解质部件（310）之间或检测引线（350）上设置绝缘层（340）（380）。

公开(公告)号：US07859177B2

公开(公告)日：2010-12-28

申请号：US11600318

申请日：2006-11-16

申请人： Osamu Yoshimoto ,  Wataru Matsutani

发明人： Osamu Yoshimoto ,  Wataru Matsutani

IPC分类号： H01T13/20 ,  C22C19/05

CPC分类号： H01T13/39 ,  H01T13/20 ,  H01T13/32

摘要： A spark plug for an internal-combustion engine is provided wherein the central and ground electrodes exhibit a long service life and wherein the fatigue strength at high temperatures is improved. The ground electrode is made from an alloy comprised of nickel (Ni) as a primary component, chromium: 20-30% by weight, iron: 7-20% by weight, aluminum: 1-3% by weight, titanium: 0.05-0.5% by weight, manganese: not higher than 0.1% by weight, silicon: not higher than 0.1% by weight, and carbon: not higher than 0.5% by weight. The alloy further includes at least one specific element selected from zirconium, yttrium, neodymium, cerium, lanthanum and samarium. Further, the total content of the specific element group is 5% or more of the aluminum content and is not higher than 1% by weight.

摘要翻译： 提供一种用于内燃机的火花塞，其中中心和接地电极具有较长的使用寿命，并且其中提高了高温下的疲劳强度。 接地电极由以镍（Ni）为主要成分的合金制成，铬：20-30重量％，铁：7〜20重量％，铝：1-3重量％，钛：0.05〜 0.5重量％，锰：不高于0.1重量％，硅：不高于0.1重量％，碳：不高于0.5重量％。 合金还包括选自锆，钇，钕，铈，镧和钐中的至少一种特定元素。 此外，特定元素基团的总含量为铝含量的5％以上且不高于1重量％。

公开(公告)号：US07291961B2

公开(公告)日：2007-11-06

申请号：US10948465

申请日：2004-09-24

申请人： Akira Suzuki ,  Wataru Matsutani

发明人： Akira Suzuki ,  Wataru Matsutani

IPC分类号： H01T13/20

CPC分类号： H01T21/02 ,  H01T13/39

摘要： A method for producing a spark plug, the spark plug including: a center electrode; an insulator which holds the center electrode therein in a state where a tip end portion of the center electrode protrudes therefrom; a metal shell which holds the insulator therein; a ground electrode which is fixed to the metal shell, the ground electrode having an inner side face having a width that is smaller as it advances toward a tip end side, in a portion of the inner side face positioned between a pair of tapered faces; and a discharge portion which is bonded to the inner side face of the ground electrode by laser welding so as to attain a diameter of 0.8 mm or less and a height of 0.5 mm or more, a discharge gap being formed between the discharge portion and the tip end portion of said center electrode, the method including: forming the tapered faces before the discharge portion is laser-welded to the inner side face.

摘要翻译： 一种火花塞的制造方法，所述火花塞包括：中心电极; 在中心电极的前端部突出的状态下将中心电极保持在其中的绝缘体; 一个将绝缘体固定在其中的金属外壳; 所述接地电极固定在所述金属壳体上，所述接地电极具有内侧面，所述接地电极的内侧面位于一对锥面之间，所述内侧面的前端朝向前端侧具有较小的宽度; 以及通过激光焊接结合到接地电极的内侧面的排出部分，以获得0.8mm以下的直径和0.5mm以上的高度，在排出部和排出部之间形成有排出间隙 所述中心电极的前端部分的方法包括：在将排出部分激光焊接到内侧面之前形成锥形面。

公开(公告)号：US20070216275A1

公开(公告)日：2007-09-20

申请号：US11687828

申请日：2007-03-19

申请人： Kazuyoshi Torii ,  Kazumasa Yoshida ,  Wataru Matsutani

发明人： Kazuyoshi Torii ,  Kazumasa Yoshida ,  Wataru Matsutani

IPC分类号： H01T13/20

CPC分类号： H01T21/02 ,  H01T13/20 ,  H01T13/36 ,  H01T13/39

摘要： A spark plug 100 comprised of a metal shell 1, an insulator 2, a center electrode 3 and a ground electrode 4. A rear-end face of the ground electrode 4 is welded to a front-end face of the metal shell 1, and a bent portion 5 located at the intermediated position in the longitudinal direction is bent toward the center of the spark plug 100. The ground electrode 4 assumes a circular-shape with a diameter of 2 mm or less whereby an inflow of an air-fuel mixture is not disturbed even when the air-fuel mixture directly flows into a back face of the ground electrode 4. The ground electrode 4 is comprised of an outer layer 4A made of a nickel alloy and an inner layer 4B made of pure copper with an excellent thermal conductivity, in which a ratio of a cross-sectional area of the inner layer 4B to the entire cross-sectional area of the ground electrode 4 is 10% or more to 35% or less. Thus, the spark plug 100 which is excellent in heat sinking ability and can prevent a spring back phenomenon due to a difference in a coefficient of thermal expansion.

摘要翻译： 由金属壳1，绝缘体2，中心电极3和接地电极4构成的火花塞100.接地电极4的后端面焊接在金属壳1的前端面上， 位于中间位置的弯曲部分5朝向火花塞100的中心弯曲。接地电极4呈直径为2mm或更小的圆形，由此空气 - 燃料混合物 即使当空气 - 燃料混合物直接流入接地电极4的背面时也不会受到干扰。接地电极4包括由镍合金制成的外层4A和由纯铜制成的内层4B， 内层4B的截面积与接地电极4的整个横截面积的比率为10％以上35％以下的良好的导热性。 因此，具有散热能力优异且能够防止由于热膨胀系数的差异引起的弹回现象的火花塞100。

公开(公告)号：US20050242695A9

公开(公告)日：2005-11-03

申请号：US10948465

申请日：2004-09-24

申请人： Akira Suzuki ,  Wataru Matsutani

发明人： Akira Suzuki ,  Wataru Matsutani

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

CPC分类号： H01T21/02 ,  H01T13/39

摘要： A method for producing a spark plug, the spark plug including: a center electrode; an insulator which holds the center electrode therein in a state where a tip end portion of the center electrode protrudes therefrom; a metal shell which holds the insulator therein; a ground electrode which is fixed to the metal shell, the ground electrode having an inner side face having a width that is smaller as it advances toward a tip end side, in a portion of the inner side face positioned between a pair of tapered faces; and a discharge portion which is bonded to the inner side face of the ground electrode by laser welding so as to attain a diameter of 0.8 mm or less and a height of 0.5 mm or more, a discharge gap being formed between the discharge portion and the tip end portion of said center electrode, the method including: forming the tapered faces before the discharge portion is laser-welded to the inner side face.

摘要翻译： 一种火花塞的制造方法，所述火花塞包括：中心电极; 在中心电极的前端部突出的状态下将中心电极保持在其中的绝缘体; 一个将绝缘体固定在其中的金属外壳; 所述接地电极固定在所述金属壳体上，所述接地电极具有内侧面，所述接地电极的内侧面位于一对锥面之间，所述内侧面的前端朝向前端侧具有较小的宽度; 以及通过激光焊接结合到接地电极的内侧面的排出部分，以获得0.8mm以下的直径和0.5mm以上的高度，在排出部和排出部之间形成有排出间隙 所述中心电极的前端部分的方法包括：在将排出部分激光焊接到内侧面之前形成锥形面。

公开(公告)号：US20050057135A1

公开(公告)日：2005-03-17

申请号：US10937432

申请日：2004-09-10

申请人： Osamu Yoshimoto ,  Wataru Matsutani

发明人： Osamu Yoshimoto ,  Wataru Matsutani

IPC分类号： H01T13/39 ,  H01T13/20

CPC分类号： H01T13/39

摘要： A spark plug including an insulator having an axial hole in an axial direction; and a center electrode disposed in a tip end side of the axial hole of the insulator so as to project a tip end of the center electrode from the tip end side of the insulator. The center electrode includes an electrode base member made of pure Ni or an Ni alloy containing 85 wt % or more of Ni; and a noble metal chip fixed to a tip end of the electrode base. The spark plug further includes a metal shell surrounding the insulator; and a ground electrode in which one end is joined to the metal shell, and another end portion opposes the noble metal chip to form a spark discharge gap between the ground electrode and noble metal chip, wherein M, D1, and D2 as defined herein satisfy M≦10.1 mm, 0.5 mm≦D2

摘要翻译： 一种火花塞，其包括在轴向上具有轴向孔的绝缘体; 以及设置在所述绝缘体的轴向孔的前端侧的中心电极，以使所述中心电极的前端从所述绝缘体的前端侧突出。 中心电极包括由纯Ni或含有85重量％以上的Ni的Ni合金制成的电极基体; 以及固定在电极基体的前端的贵金属芯片。 火花塞还包括围绕绝缘体的金属壳; 以及接地电极，其一端接合到金属壳体，另一端部与贵金属芯片相对，以在接地电极和贵金属芯片之间形成火花放电间隙，其中如本文所定义的M，D1和D2满足 M <= 10.1mm，0.5mm <= D2 <1.4MM，AND D1 / D2> = 3.5。

公开(公告)号：US06858975B1

公开(公告)日：2005-02-22

申请号：US09237623

申请日：1999-01-26

申请人： Wataru Matsutani

发明人： Wataru Matsutani

IPC分类号： H01T13/36 ,  H01T21/02 ,  H01T13/20 ,  F02P1/00

CPC分类号： H01T13/36

摘要： In a spark plug for an internal combustion engine oil is applied onto at least either the surface of an intermediate body portion of an insulator or the surface of an intermediate hole portion of a metallic shell, thereby forming an oil film. Since the oil film has a dielectric constant falling between those of the insulator and an ambient air layer, a great change in dielectric constant between the insulator and the ambient air layer is eased. Also, since the oil film is of liquid, the oil film smoothes a dent or protrusion or a fine defect such as crack present on the surface of the intermediate body portion of the insulator. Thus, electric field concentration is suppressed, thereby preventing dielectric breakdown caused by such a dent, protrusion or fine defect.

摘要翻译： 在用于内燃机的火花塞中，油被施加到绝缘体的中间体部分的表面或金属壳的中间孔部分的表面中，从而形成油膜。 由于油膜具有介于绝缘体和周围空气层之间的介电常数，绝缘体与环境空气层之间介电常数的变化很大。 此外，由于油膜为液体，所以油膜平滑了绝缘体的中间体部分的表面上存在的凹痕或凸起或细小的缺陷，如裂纹。 因此，电场集中被抑制，从而防止由于凹陷，突起或细小缺陷引起的电介质击穿。

公开(公告)号：US06664719B2

公开(公告)日：2003-12-16

申请号：US10106249

申请日：2002-03-27

申请人： Wataru Matsutani ,  Masayuki Segawa ,  Satoko Ito

发明人： Wataru Matsutani ,  Masayuki Segawa ,  Satoko Ito

IPC分类号： H01T1320

CPC分类号： H01T13/39

摘要： A spark plug having a discharge portion formed of a noble-metal chip, the spark plug being capable of restraining wear observed on a slenderized discharge portion in particular. Discharge portion (31) includes noble-metal chip (31′). Dimension D is 0.3-0.8 mm; and H is 0.4-2 mm, where D (mm) is a diameter representing the outside diameter of the noble-metal chip, and H (mm) is a discharge portion thickness representing the shortest distance between the periphery of a discharge face (31t) and a corresponding end edge of a weld zone W where a center electrode (3) and the noble-metal chip (31′) are welded. Further, the noble-metal chip (31′) contains a predominant amount of Ir and 0.5-8% by weight Ni.

摘要翻译： 一种具有由贵金属芯片形成的放电部分的火花塞，该火花塞特别能够抑制在细长的放电部分上观察到的磨损。 放电部（31）包括贵金属芯片（31'）。 尺寸D为0.3-0.8mm; H为0.4-2mm，其中D（mm）为代表贵金属芯片外径的直径，H（mm）为排出面（31t）的周边之间的最短距离的排出部分厚度 ）和焊接区域W的对应的端部边缘，其中中心电极（3）和贵金属芯片（31'）被焊接。 此外，贵金属片（31'）含有主要量的Ir和0.5-8重量％的Ni。