公开(公告)号：US07944134B2

公开(公告)日：2011-05-17

申请号：US12275259

申请日：2008-11-21

申请人： Jiro Kyuno ,  Akira Suzuki ,  Mai Moribe ,  Yuichi Nakano ,  Mamoru Musasa

发明人： Jiro Kyuno ,  Akira Suzuki ,  Mai Moribe ,  Yuichi Nakano ,  Mamoru Musasa

IPC分类号： H01T13/16 ,  H01T13/20 ,  H01T13/39

CPC分类号： H01T13/39

摘要： A spark plug including: a center electrode including an electrode base member and a core member; an electrode tip joined to the center electrode via a molten bond; an insulator holding the center electrode; a metal shell holding the insulator; and a ground electrode joined to the metal shell. Relationships d≦2.1 [mm] and −0.09×d+0.33

摘要翻译： 一种火花塞，包括：中心电极，包括电极基体和芯部; 通过熔融接合连接到中心电极的电极头; 保持中心电极的绝缘体; 保持绝缘体的金属外壳; 以及与金属壳接合的接地电极。 关系d＆nlE; 2.1 [mm]和-0.09×d + 0.33

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：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。

公开(公告)号：US20110254428A1

公开(公告)日：2011-10-20

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：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：US20120306346A1

公开(公告)日：2012-12-06

申请号：US13580170

申请日：2010-09-28

申请人： Jiro Kyuno ,  Akira Suzuki

发明人： Jiro Kyuno ,  Akira Suzuki

IPC分类号： H01T13/20

CPC分类号： H01T13/36 ,  H01T21/02

摘要： A spark plug having a metal shell, the metal shell having a tool engagement portion, a trunk portion and a cylindrical groove disposed between the tool engagement portion and the trunk portion, wherein the following relationship is satisfied: Z1

摘要翻译： 一种具有金属壳的火花塞，金属壳具有工具接合部，主体部和设置在工具接合部和主体部之间的圆筒状槽，其中满足以下关系：Z1 <= Z2，其中Z1表示 槽的第一槽端的截面模数，Z2表示槽的第二槽端的截面模数。

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：US08102105B2

公开(公告)日：2012-01-24

申请号：US12548504

申请日：2009-08-27

申请人： Kenji Ban ,  Jiro Kyuno ,  Akira Suzuki

发明人： Kenji Ban ,  Jiro Kyuno ,  Akira Suzuki

IPC分类号： H01T13/20

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

摘要： A spark plug in which the rising of a ground electrode is more reliably restrained. The spark plug includes a ground electrode having a core portion extending from a proximal end section toward a distal end section via a bent section, a heat transfer portion extending from the proximal end section toward the distal end section via the bent section, and an external layer located externally of the core portion and the heat transfer portion and extending from the proximal end section to the distal end section via the bent section. As viewed on a section of the ground electrode taken orthogonally to a direction along which the ground electrode extends, at least at an intermediate position of the bent section with respect to the direction, the center of the core portion is offset toward a center electrode from the center of the heat transfer portion.

摘要翻译： 能够更可靠地抑制接地电极的上升的火花塞。 火花塞包括：接地电极，其具有通过弯曲部从近端部向远端部延伸的芯部;经由弯曲部从基端部向远端部延伸的传热部， 所述层位于所述芯部和所述传热部的外部，并且经由所述弯曲部从所述近端部延伸到所述远端部。 在与接地电极延伸的方向正交的接地电极的截面上，至少在弯曲部分相对于该方向的中间位置处，芯部的中心偏离中心电极 传热部分的中心。