公开(公告)号：US08636555B2

公开(公告)日：2014-01-28

申请号：US13256855

申请日：2010-06-07

申请人： Keisuke Kure ,  Jiro Kyuno

发明人： Keisuke Kure ,  Jiro Kyuno

IPC分类号： H01T21/02

CPC分类号： H01T21/02 ,  H01T21/06

摘要： Provided is a technique for limiting the radial displacement between a metal shell and an insulator in a spark plug. At the time of manufacturing a spark plug with a metal shell and an insulator, the metal shell and the insulator are assembled together by, while allowing relative positional displacement between the metal shell and the insulator in an axial direction (O-O), limiting relative positional displacement between the metal shell and the insulator in a radial direction intersecting with the axial direction in such a manner that the amount of deviation between an axis of the metal shell and an axis of the insulator becomes less than or equal to a predetermined level.

摘要翻译： 提供了一种用于限制火花塞中的金属壳和绝缘体之间的径向位移的技术。 在制造具有金属壳和绝缘体的火花塞时，金属壳和绝缘子通过在轴向方向（OO）允许金属壳和绝缘体之间的相对位置偏移而组装在一起，限制了相对位置 金属壳与绝缘体之间沿与轴向交叉的径向方向的位移使得金属壳的轴线与绝缘体的轴线之间的偏离量变得小于或等于预定水平。

公开(公告)号：US20130225029A1

公开(公告)日：2013-08-29

申请号：US13880088

申请日：2011-11-11

申请人： Jiro Kyuno ,  Keiji Ozeki ,  Tomoaki Kato ,  Akiko Maruno

发明人： Jiro Kyuno ,  Keiji Ozeki ,  Tomoaki Kato ,  Akiko Maruno

IPC分类号： H01T21/02

CPC分类号： H01T21/02 ,  H01T13/36

摘要： A spark plug includes a ceramic insulator extending in the direction of an axis (CL1) and a metallic shell provided around the ceramic insulator. Talc is pressed charged between the ceramic insulator and the metallic shell and a crimp portion is formed for fixing the metallic shell and the ceramic insulator while the metallic shell having the ceramic insulator inserted thereinto is supported by a tubular receiving member. The receiving member is made movable in relation to a pressing jig in its radial direction. Thus, at the time of pressing of the talc, etc., the eccentricity between the center axis (CL2), (CL3) of the pressing jig and the axis (CL1) in the radial direction can be reduced, whereby the misalignment between the axis (CL1) and the center axis of the metallic shell or the like assembly error can be suppressed.

摘要翻译： 火花塞包括沿轴线（CL1）延伸的陶瓷绝缘体和设置在陶瓷绝缘体周围的金属壳。 在陶瓷绝缘体和金属壳之间压制滑石，并且形成用于固定金属壳和陶瓷绝缘体的卷曲部分，而具有插入陶瓷绝缘体的金属壳由管状接收构件支撑。 接收构件相对于按压夹具在其径向方向上可移动。 因此，在挤压滑石等时，可以减小按压夹具的中心轴线（CL2），（CL3）与径向轴线（CL1）之间的偏心率，由此， 轴（CL1）和金属壳等的中心轴的组装误差可以被抑制。

公开(公告)号：US08253311B2

公开(公告)日：2012-08-28

申请号：US12737331

申请日：2009-08-31

申请人： Kenji Ban ,  Akira Suzuki ,  Jiro Kyuno

发明人： Kenji Ban ,  Akira Suzuki ,  Jiro Kyuno

IPC分类号： H01T13/20

CPC分类号： H01T13/32 ,  H01T13/16 ,  H01T13/39

摘要： A spark plug capable of preventing breakage of a ground electrode. The spark plug is comprised of a ground electrode having a base end portion fixed to a metal shell, a bend portion integrally formed with the base end portion and being bent and a front end portion integrally formed with the bend portion and forming a spark discharge gap “g” with a center electrode. The ground electrode is comprised of a core extending from the base end portion towards the front end portion through the bend portion; and an outer layer disposed outside the core and extending from the base end portion up to the front end portion through the bend portion. The core is made of Hastelloy C serving as a first metal, and the outer layer is made of Inconel 601 serving as a second metal. Hardness of Hastelloy C is higher than that of Inconel 601.

摘要翻译： 一种能够防止接地电极断裂的火花塞。 所述火花塞由接地电极构成，所述接地电极具有固定在金属壳体上的基端部，与所述基端部一体形成并弯曲的弯曲部，以及与所述弯曲部一体形成的前端部，并形成火花放电间隙 “g”与中心电极。 接地电极由通过弯曲部从基端部向前端部延伸的芯部构成; 以及设置在所述芯部外侧并通过所述弯曲部从所述基端部延伸到所述前端部的外层。 芯由作为第一金属的哈氏合金C制成，外层由作为第二金属的铬镍铁合金601制成。 哈氏合金C的硬度高于铬镍铁合金601。

公开(公告)号：US20080098974A1

公开(公告)日：2008-05-01

申请号：US11926766

申请日：2007-10-29

申请人： Reimon FUKUZAWA ,  Jiro KYUNO

发明人： Reimon FUKUZAWA ,  Jiro KYUNO

IPC分类号： H01T13/02

CPC分类号： H01T13/08

摘要： A spark plug for an internal combustion engine includes: a cylindrical insulator as defined herein; a center electrode as defined herein; a cylindrical metal shell as defined herein; and a ground electrode as defined herein, an annular gasket receiving portion projecting radially outward being provided on a rear end side of the externally threaded portion of the metal shell, and a metallic gasket capable of abutting against the gasket receiving portion being provided on the outer periphery of the metal shell, wherein the gasket has a solid annular shape, an inside diameter of the gasket is smaller than an outside diameter of the externally threaded portion, and a groove portion whose depth coincides with the direction of the axis is provided over an entire circumference of the gasket.

摘要翻译： 一种用于内燃机的火花塞包括：如本文所定义的圆柱形绝缘体; 如本文所定义的中心电极; 如本文所定义的圆柱形金属壳; 和如本文所定义的接地电极，设置在金属外壳的外螺纹部分的后端侧上的径向向外突出的环形垫片接收部分和能够抵靠垫圈接收部分的金属垫圈设置在外部 金属外壳的周边，其中垫圈具有固体环形形状，垫圈的内径小于外螺纹部分的外径，并且其深度与轴线方向重合的槽部分设置在 整个圆周的垫圈。

公开(公告)号：US08633640B2

公开(公告)日：2014-01-21

申请号：US12998935

申请日：2009-12-22

申请人： Jiro Kyuno ,  Akira Suzuki ,  Mamoru Musasa

发明人： Jiro Kyuno ,  Akira Suzuki ,  Mamoru Musasa

IPC分类号： H01T13/04

CPC分类号： H01T13/36 ,  H01T13/16

摘要： [Objective] To provide a spark plug which is configured such that an insulation member, from which a center electrode projects, is pressed frontward and held in a metallic shell, and is fixed by means of crimping the rear end of the metallic shell, and which can prevent a drop in gas tightness between the metallic shell and the insulation member due to a difference in thermal expansion therebetween.[Means for Solution] In a spark plug in which a mating shaft portion (10) of an insulation member (1) is loose-fitted into a mating hole portion (30) of a metallic shell (21), a filler (41) for maintaining gas tightness is charged between the outer circumferential surface of the mating shaft portion (10) and the inner circumferential surface of the mating hole portion (30). Despite the thermal expansion difference, the gas tightness is maintained, because the filler (41) for maintaining gas tightness is charged between the inner and outer circumferential surfaces.

摘要翻译： [目的]提供一种火花塞，其构造成使得中心电极突出的绝缘构件被向前压入并保持在金属壳中，并且通过压接金属壳的后端而被固定，以及 这可以防止由于它们之间的热膨胀差而在金属壳和绝缘构件之间的气密性降低。 [解决方案]在绝缘构件（1）的配合轴部分（10）松配合到金属壳（21）的配合孔部分（30）中的火花塞中，填充物（41） 为了保持气密性，在配合轴部（10）的外周面与配合孔部（30）的内​​周面之间进行充填。 尽管存在热膨胀差异，但是由于用于保持气密性的填料（41）被填充在内圆周表面和外圆周表面之间，因此保持气密性。

公开(公告)号：US08531094B2

公开(公告)日：2013-09-10

申请号：US12595732

申请日：2008-09-10

申请人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa ,  Jiro Kyuno

发明人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa ,  Jiro Kyuno

IPC分类号： H01T13/20 ,  H01T13/14

CPC分类号： H01T13/20 ,  H01T13/14 ,  H01T13/34 ,  H01T13/39

摘要： The present invention provides a spark plug that includes a center electrode extending in an axial direction, a ceramic insulator having an axial hole formed in the axial direction to retain the center electrode in a front side of the axial hole and thereby form an assembly unit of the center electrode and the ceramic insulator, a metal shell surrounding an outer circumference of the ceramic insulator to retain therein the assembly unit, and a ground electrode having one end portion joined to a front end face of the metal shell and the other end portion facing the center electrode to define a spark gap therebetween, wherein the spark plug satisfies the following conditions: H≧1 mm, Vc≦17 mm3 and Ra≧1.0×103 K/(m·W) where H is a length by which the ceramic insulator protrudes toward the front from the front end face of the metal shell in the axial direction; Vc is a volume of part of the ceramic insulator extending within a range of 2 mm from a front end of the ceramic insulator toward the rear in the axial direction; and Ra is a thermal resistance per unit length, excluding air space, at 20° C. at a cross section of the assembly unit taken perpendicular to the axial direction at a position 2 mm away from the front end of the ceramic insulator.

摘要翻译： 本发明提供一种火花塞，其包括沿轴向延伸的中心电极，具有沿轴向形成的轴向孔的陶瓷绝缘体，以将中心电极保持在轴向孔的前侧，从而形成组装单元 所述中心电极和所述陶瓷绝缘体，围绕所述陶瓷绝缘体的外周的金属壳，以将所述组装单元保持在其中;以及接地电极，所述接地电极具有接合到所述金属壳的前端面的一个端部， 所述中心电极在其间限定火花隙，其中所述火花塞满足以下条件：H> = 1mm，Vc @ 17mm 3，Ra> = 1.0×103K /（m·W）其中H是长度， 陶瓷绝缘体从金属壳的前端面沿轴向向前突出; Vc是陶瓷绝缘体的一部分的体积，其距离陶瓷绝缘体的前端在轴向方向的后端2mm的范围内延伸; 并且Ra在距离陶瓷绝缘体的前端2mm的位置垂直于轴向的组装单元的截面处，在20℃下，每单位长度的热阻，不包括空气空间。

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。

公开(公告)号：US08115371B2

公开(公告)日：2012-02-14

申请号：US12744783

申请日：2008-11-25

申请人： Jiro Kyuno ,  Akira Suzuki ,  Kenji Ban

发明人： Jiro Kyuno ,  Akira Suzuki ,  Kenji Ban

IPC分类号： H01T13/20

CPC分类号： H01T13/20 ,  H01T13/38

摘要： A spark plug having a front end of an insulating member which projects 2 mm or more from a front end face of a metal shell and a volume of the insulating member which lies within a range from a front end of the insulating member to a position lying 1 mm towards a rear end side is 11 mm3 or smaller. When the positions PA, PB, PC and PD are as defined herein, a parallel displacement amount E by which the straight line BC is displaced parallel until it contacts PD is 0.75 mm or larger. In this manner, the occurrence of lateral spark and inside spark can be suppressed effectively.

摘要翻译： 一种火花塞，其具有绝缘构件的前端，其从金属壳的前端面突出2mm以上，绝缘构件的体积位于从所述绝缘构件的前端到位于所述绝缘构件的前端的位置的位置 朝后端侧1mm为11mm3以下。 当位置PA，PB，PC和PD如本文所定义时，直线BC平行移动直到其接触PD的平行位移量E为0.75mm或更大。 以这种方式，可以有效地抑制侧向火花和内部火花的发生。

公开(公告)号：US20110095672A1

公开(公告)日：2011-04-28

申请号：US12737331

申请日：2009-08-31

申请人： Kenji Ban ,  Akira Suzuki ,  Jiro Kyuno

发明人： Kenji Ban ,  Akira Suzuki ,  Jiro Kyuno

IPC分类号： H01T13/20

CPC分类号： H01T13/32 ,  H01T13/16 ,  H01T13/39

摘要： A spark plug capable of preventing breakage of a ground electrode. The spark plug is comprised of a ground electrode having a base end portion fixed to a metal shell, a bend portion integrally formed with the base end portion and being bent and a front end portion integrally formed with the bend portion and forming a spark discharge gap “g” with a center electrode. The ground electrode is comprised of a core extending from the base end portion towards the front end portion through the bend portion; and an outer layer disposed outside the core and extending from the base end portion up to the front end portion through the bend portion. The core is made of Hastelloy C serving as a first metal, and the outer layer is made of Inconel 601 serving as a second metal. Hardness of Hastelloy C is higher than that of Inconel 601.

摘要翻译： 一种能够防止接地电极断裂的火花塞。 所述火花塞由接地电极构成，所述接地电极具有固定在金属壳体上的基端部，与所述基端部一体形成并弯曲的弯曲部，以及与所述弯曲部一体形成的前端部，并形成火花放电间隙 “g”与中心电极。 接地电极由通过弯曲部从基端部向前端部延伸的芯部构成; 以及设置在所述芯部外侧并通过所述弯曲部从所述基端部延伸到所述前端部的外层。 芯由作为第一金属的哈氏合金C制成，外层由作为第二金属的铬镍铁合金601制成。 哈氏合金C的硬度高于铬镍铁合金601。

公开(公告)号：US20100117507A1

公开(公告)日：2010-05-13

申请号：US12595732

申请日：2008-09-10

申请人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa ,  Jiro Kyuno

发明人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa ,  Jiro Kyuno

IPC分类号： H01T13/20

CPC分类号： H01T13/20 ,  H01T13/14 ,  H01T13/34 ,  H01T13/39

摘要： The present invention provides a spark plug that includes a center electrode extending in an axial direction, a ceramic insulator having an axial hole formed in the axial direction to retain the center electrode in a front side of the axial hole and thereby form an assembly unit of the center electrode and the ceramic insulator, a metal shell surrounding an outer circumference of the ceramic insulator to retain therein the assembly unit, and a ground electrode having one end portion joined to a front end face of the metal shell and the other end portion facing the center electrode to define a spark gap therebetween, wherein the spark plug satisfies the following conditions: H≧1 mm, Vc≦17 mm3 and Ra≧1.0×10−3 m·K/W where H is a length by which the ceramic insulator protrudes toward the front from the front end face of the metal shell in the axial direction; Vc is a volume of part of the ceramic insulator extending within a range of 2 mm from a front end of the ceramic insulator toward the rear in the axial direction; and Ra is a thermal resistance per unit length, excluding air space, at 20° C. at a cross section of the assembly unit taken perpendicular to the axial direction at a position 2 mm away from the front end of the ceramic insulator.

摘要翻译： 本发明提供一种火花塞，其包括沿轴向延伸的中心电极，具有沿轴向形成的轴向孔的陶瓷绝缘体，以将中心电极保持在轴向孔的前侧，从而形成组装单元 所述中心电极和所述陶瓷绝缘体，围绕所述陶瓷绝缘体的外周的金属壳，以将所述组装单元保持在其中;以及接地电极，所述接地电极具有接合到所述金属壳的前端面的一个端部， 所述中心电极在其间形成火花隙，其中，所述火花塞满足以下条件：H≥1mm，Vc＆nlE; 17mm3，Ra≥1.0×10-3m·K / W其中，H是陶瓷 绝缘体从金属壳体的前端面沿轴向向前突出; Vc是陶瓷绝缘体的一部分的体积，其距离陶瓷绝缘体的前端在轴向方向的后端2mm的范围内延伸; 并且Ra在距离陶瓷绝缘体的前端2mm的位置垂直于轴向的组装单元的截面处，在20℃下，每单位长度的热阻，不包括空气空间。