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：US08841826B2

公开(公告)日：2014-09-23

申请号：US13578175

申请日：2010-11-26

申请人： Yuji Kasuya ,  Kenji Ban

发明人： Yuji Kasuya ,  Kenji Ban

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

CPC分类号： H01T13/39 ,  F02P13/00

摘要： A spark plug includes a ceramic insulator, a center electrode, a metallic shell, and a ground electrode. The center electrode has a shoulder portion at a forward end portion, which tapers forward with respect to the axial direction. A noble metal tip is joined to the forward end portion of the center electrode through a fusion zone. A spark discharge gap is formed between the noble metal tip and the ground electrode. The shortest distance between the fusion zone and a forward end surface of the noble metal tip is 0.8-1.2 mm. The outside diameter of the fusion zone as measured at a forward end of the fusion zone is smaller than that as measured at a rear end of the fusion zone. An acute angle θ1 formed by a straight line L1 and a straight line L2 satisfies the relational expression θ1≦72°.

摘要翻译： 火花塞包括陶瓷绝缘体，中心电极，金属壳和接地电极。 中心电极在前端部具有相对于轴向向前变细的肩部。 贵金属端头通过熔接区域与中心电极的前端部接合。 在贵金属端头和接地电极之间形成火花放电间隙。 熔融区与贵金属端头的前端表面之间的最短距离为0.8-1.2mm。 在熔融区的前端处测量的熔融区的外径小于在熔融区的后端测量的外径。 由直线L1和直线L2形成的锐角和角度1满足关系式：1＆nlE; 72°。

公开(公告)号：US20130328476A1

公开(公告)日：2013-12-12

申请号：US14001197

申请日：2012-02-02

申请人： Kenji Ban ,  Akira Suzuki

发明人： Kenji Ban ,  Akira Suzuki

IPC分类号： H01T13/32

CPC分类号： H01T13/32

摘要： A spark plug including: a center electrode which extends in an axial direction; a cylindrical insulator which is disposed around an outer circumference of the center electrode; a cylindrical metal shell which is disposed around an outer circumference of the insulator; and a ground electrode having one end connected to the metal shell, and an end surface of the other end being positioned between the one end and the center electrode or on the center electrode, when viewed in the axial direction of the center electrode, wherein the end surface has a maximum width portion which is formed only at a position where a distance from a center position of the end surface is 12% to 88% of a distance from the center position to an outer side surface of the ground electrode.

摘要翻译： 一种火花塞，包括：沿轴向延伸的中心电极; 围绕中心电极的外周设置的圆柱形绝缘体; 圆柱形金属壳，其设置在所述绝缘体的外周周围; 以及接地电极，其一端连接到所述金属壳，并且当从所述中心电极的轴向方向观察时，所述另一端的端面位于所述一端与所述中心电极之间或所述中心电极上，其中， 端面具有仅在从端面的中心位置到距接地电极的中心位置到外侧面的距离为12〜88％的位置处形成的最大宽度部。

公开(公告)号：US08531095B2

公开(公告)日：2013-09-10

申请号：US13393718

申请日：2010-07-12

申请人： Kenji Ban ,  Akira Suzuki

发明人： Kenji Ban ,  Akira Suzuki

IPC分类号： H01T13/20

CPC分类号： H01T13/20 ,  F02P13/00 ,  H01T13/14 ,  H01T13/39

摘要： In a spark plug that has a small sized center electrode, enhancement of corruption-resisting property and heat-resisting property is promoted. The spark plug 1 includes a center electrode 5, an insulator 2 and a metal shell 3, and the insulator 2 includes a foot section 13, a tapered section 14 and a middle body section 12. The maximum outer diameter of a portion, which is arranged within the foot section 13, of the center electrode 5 becomes 3.0 mm or less. A step section 21 and a leading end side inner periphery section 51 are formed in the inner periphery of the metal shell 3 and the tapered section 14 is engaged to a step section 21. When A (mm3) is a volume of a portion of 2 mm of the insulator 2 from leading end of the insulator 2 toward the rear end side along the axis CL1 and B (mm3) is a volume of a portion of the insulator 2 from the rear end of the portion of the tapered section 14 which is engaged to the step section 21 to the leading end side and the portion is 1.5 mm or less of the diameter difference between the leading end side inner periphery section 51 and its outer periphery portion, 0.12≦A/B≦0.24 is satisfied.

摘要翻译： 在具有小型中心电极的火花塞中，促进了耐腐蚀性和耐热性的提高。 火花塞1包括中心电极5，绝缘体2和金属壳3，绝缘体2包括脚部13，锥形部14和中间本体部12.一部分的最大外径 布置在中心电极5的脚部13内的距离变为3.0mm以下。 在金属壳3的内周形成台阶部21和前端侧内周部51，锥形部14与台阶部21接合。当A（mm3）为2的部分的体积时 绝缘体2的从绝缘体2的前端朝向CL1和B（mm3）的后端侧的mm为从锥形部1​​4的后端的后端的绝缘体2的一部分的体积 与台阶部分21接合到前端侧，并且部分的前端侧内周部分51和其外周部分之间的直径差为1.5mm以下，满足0.12 @ A / B @ 0.24。

公开(公告)号：US20100314987A1

公开(公告)日：2010-12-16

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 is such that a front end portion of an insulating member projects 2 mm or larger from a front end face of a metal shell and a volume of a portion 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 from the front end is 11 mm3 or smaller. When assuming that a corner portion where a front end face of the insulating member intersects a side surface of an axial hole is referred to as a position PA, a position on a center electrode where a straight-line distance from the position PA to the center electrode within the axial hole is referred to as a position PB, a position where the insulating member first contacts the metal shell from the front end face of the insulating element along a surface of the insulating element is referred to as a position PC, and a position on the insulating element where a straight line BC which connects the position PB with the position PC contacts the surface of the insulating member when the straight line BC is displaced parallel towards an outside of an axis is referred to as a position PD, a parallel displacement amount E by which the straight line BC is displaced parallel until it contacts the position PD is 0.75 mm or larger. According to the spark plug configured in this way, even though the spark plug is shaped small, the occurrence of lateral spark and inside spark can be suppressed effectively.

摘要翻译： 火花塞使得绝缘构件的前端部从金属壳的前端面突出2mm以上，绝缘构件的一部分的体积位于绝缘构件的前端的范围内 构件到从前端朝向后端侧1mm的位置为11mm 3或更小。 当假设绝缘构件的前端面与轴向孔的侧面相交的角部被称为位置PA时，中心电极上的位置与从位置PA到中心的直线距离 轴向孔内的电极被称为位置PB，绝缘构件首先沿着绝缘元件的表面从绝缘元件的前端面接触金属壳体的位置称为位置PC，并且 将直线BC平行于轴的外侧位移时，连接位置PB与位置PC的直线BC与绝缘构件的表面接触的绝缘元件的位置被称为位置PD，平行 直线BC平行移动到其接触位置PD的位移量E为0.75mm以上。 根据以这种方式构成的火花塞，即使火花塞的形状较小，也能够有效地抑制侧面火花和内部火花的发生。

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：US08912714B2

公开(公告)日：2014-12-16

申请号：US14001197

申请日：2012-02-02

申请人： Kenji Ban ,  Akira Suzuki

发明人： Kenji Ban ,  Akira Suzuki

IPC分类号： H01T13/20 ,  H01T13/32

CPC分类号： H01T13/32

摘要： A spark plug including: a center electrode which extends in an axial direction; a cylindrical insulator which is disposed around an outer circumference of the center electrode; a cylindrical metal shell which is disposed around an outer circumference of the insulator; and a ground electrode having one end connected to the metal shell, and an end surface of the other end being positioned between the one end and the center electrode or on the center electrode, when viewed in the axial direction of the center electrode, wherein the end surface has a maximum width portion which is formed only at a position where a distance from a center position of the end surface is 12% to 88% of a distance from the center position to an outer side surface of the ground electrode.

摘要翻译： 一种火花塞，包括：沿轴向延伸的中心电极; 围绕中心电极的外周设置的圆柱形绝缘体; 圆柱形金属壳，其设置在所述绝缘体的外周周围; 以及接地电极，其一端连接到所述金属壳，并且当从所述中心电极的轴向方向观察时，所述另一端的端面位于所述一端与所述中心电极之间或所述中心电极上，其中， 端面具有仅在从端面的中心位置到距接地电极的中心位置到外侧面的距离为12〜88％的位置处形成的最大宽度部。

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。

公开(公告)号：US20100096968A1

公开(公告)日：2010-04-22

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。