公开(公告)号：US08395307B2

公开(公告)日：2013-03-12

申请号：US13142893

申请日：2009-12-07

申请人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa ,  Toshitaka Honda

发明人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa ,  Toshitaka Honda

IPC分类号： H01T13/20

CPC分类号： H01T13/14

摘要： A spark plug which provides reliable prevention of adhesion and accumulation of carbon on an insulator, includes a center electrode extending in the direction of an axis CL1, a ceramic insulator having an axial hole which extends in the direction of the axis CL1 and in which the center electrode is provided, a cylindrical metallic shell provided externally of the outer circumference of the insulator and having a support portion formed on the inner circumferential surface thereof, and a ground electrode extending from a front end portion of the metallic shell. The insulator has a stepped portion supported by the support portion of the metallic shell, and a leg portion formed forward of the stepped portion. A space SP formed between the leg portion of the insulator and the inner circumferential surface of the metallic shell has a volume of 100 mm3 to 300 mm3 inclusive.

摘要翻译： 提供可靠地防止绝缘体上的碳的粘附和积聚的火花塞包括沿轴线CL1的方向延伸的中心电极，具有沿轴线CL1的方向延伸的轴向孔的陶瓷绝缘体，其中， 中心电极，设置在绝缘体的外周外侧的具有形成在其内周面上的支撑部分的圆筒形金属壳体和从金属壳体的前端部延伸的接地电极。 绝缘体具有由金属壳的支撑部分支撑的阶梯部分和在阶梯部分的前方形成的脚部。 在绝缘体的腿部和金属壳的内周面之间形成的空间SP的体积为100mm 3〜300mm 3（以下）。

公开(公告)号：US20110266940A1

公开(公告)日：2011-11-03

申请号：US13142893

申请日：2009-12-07

申请人： Akira Suzuki ,  Tomoaki Kate ,  Mamoru Musasa ,  Toshitaka Honda

发明人： Akira Suzuki ,  Tomoaki Kate ,  Mamoru Musasa ,  Toshitaka Honda

IPC分类号： H01T13/20

CPC分类号： H01T13/14

摘要： A spark plug which provides reliable prevention of adhesion and accumulation of carbon on an insulator, includes a center electrode extending in the direction of an axis CL1, a ceramic insulator having an axial hole which extends in the direction of the axis CL1 and in which the center electrode is provided, a cylindrical metallic shell provided externally of the outer circumference of the insulator and having a support portion formed on the inner circumferential surface thereof, and a ground electrode extending from a front end portion of the metallic shell. The insulator has a stepped portion supported by the support portion of the metallic shell, and a leg portion formed forward of the stepped portion. A space SP formed between the leg portion of the insulator and the inner circumferential surface of the metallic shell has a volume of 100 mm3 to 300 mm3 inclusive.

摘要翻译： 提供可靠地防止绝缘体上的碳的粘附和积聚的火花塞包括沿轴线CL1的方向延伸的中心电极，具有沿轴线CL1的方向延伸的轴向孔的陶瓷绝缘体，其中， 中心电极，设置在绝缘体的外周外侧的具有形成在其内周面上的支撑部分的圆筒形金属壳体和从金属壳体的前端部延伸的接地电极。 绝缘体具有由金属壳的支撑部分支撑的阶梯部分和在阶梯部分的前方形成的脚部。 在绝缘体的腿部和金属壳的内周面之间形成的空间SP的体积为100mm 3〜300mm 3（以下）。

公开(公告)号：US20110018422A1

公开(公告)日：2011-01-27

申请号：US12933192

申请日：2009-03-17

申请人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa

发明人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa

IPC分类号： H01T13/02

CPC分类号： H01T13/38

摘要： When an insulator of a spark plug receives an external force in a bending direction perpendicular to an axis at a rear end side body portion, a position C where the insulator is supported by a crimping portion via a packing acts as a fulcrum, and a stress is applied between the position C and a position B where the insulator is supported by a ledge portion via a packing. When an insulator is designed in which the balance of size and modulus of section is adjusted so that τA which denotes a proof strength against bending between a rear end position A of the insulator and the position C and τB which denotes a proof strength against bending between the position B and the position C satisfy 0.71≦τA/τB≦1.27, cracks can be prevented.

摘要翻译： 当火花塞的绝缘体在与后端侧主体部分的轴线垂直的弯曲方向上接收到外力时，绝缘体经由填料被压接部支撑的位置C用作支点，并且应力 施加在位置C和位置B之间，其中绝缘体通过包装被凸缘部分支撑。 当设计绝缘体时，其中调节截面尺寸和模量的平衡，使得表示绝缘体的后端位置A与位置C之间的弯曲的抵抗强度的τA和表示在绝缘体的后端位置A之间的弯曲的抗弯强度的τB 位置B和位置C满足0.71＆nlE;τA/τB＆nlE; 1.27，可以防止裂纹。

公开(公告)号：US08299694B2

公开(公告)日：2012-10-30

申请号：US12734534

申请日：2009-03-23

申请人： Akira Suzuki ,  Tomoaki Kato ,  Tsutomu Shibata ,  Mamoru Musasa

发明人： Akira Suzuki ,  Tomoaki Kato ,  Tsutomu Shibata ,  Mamoru Musasa

IPC分类号： H01T13/20

CPC分类号： H01T13/34

摘要： A spark plug with excellent vibration resistance performance and resistor load life-span characteristics, and a reduced diameter which is achieved by strengthening adhesion between a resistor and a conductive glass sealing layer.

摘要翻译： 具有优异的抗振性能和电阻器寿命特性的火花塞，以及通过增强电阻器和导电玻璃密封层之间的粘附力而实现的减小的直径。

公开(公告)号：US20110294369A1

公开(公告)日：2011-12-01

申请号：US13146816

申请日：2010-01-27

申请人： Naomichi Miyashita ,  Mamoru Musasa ,  Akira Suzuki ,  Kazuyoshi Torii ,  Tomoaki Kato

发明人： Naomichi Miyashita ,  Mamoru Musasa ,  Akira Suzuki ,  Kazuyoshi Torii ,  Tomoaki Kato

IPC分类号： H01R13/02

CPC分类号： H01T13/39 ,  H01T13/32

摘要： The present invention provides a spark plug which is capable of suppressing a occurrence of crack and separation by determining a structural configuration of a melting portion formed in a junction portion between a discharge portion and a pedestal portion which form an ignition portion that protrudes from a ground electrode. In a profile line shape of a cross section including a center axis P of an ignition portion 80, an exposure surface 88 of a melting portion 83 connects a side surface 82 of a discharge portion 81 and a side surface 85 of a pedestal portion 84. Further, an exterior angle θ formed between an imaginary line Q, which passes through a boundary position X1 between the melting portion 83 and the pedestal portion 84 and a boundary position X2 between the melting portion 83 and the discharge portion 81, and the center axis P at a node C, satisfies 135°≦θ≦175°. Furthermore, a proportion T/S of a forming depth T of the melting portion 83 to an outside diameter S of the discharge portion 81 satisfies T/S≧0.5.

摘要翻译： 本发明提供一种火花塞，其能够通过确定在形成从地面突出的点火部的排出部和基座部之间的接合部中形成的熔融部的结构构造来抑制裂纹和分离的发生 电极。 在包括点火部分80的中心轴线P的截面的轮廓线形状中，熔化部分83的暴露表面88连接排出部分81的侧表面82和基座部分84的侧表面85。 此外，外角＆thetas; 形成在通过熔融部83与基座部84之间的边界位置X1的虚拟线Q与熔融部83与排出部81之间的边界位置X2以及节点C的中心轴P之间， 满足135°＆nlE;＆thetas;＆nlE; 175°。 此外，熔融部83的成形深度T与排出部81的外径S的比例T / S满足T /S≥0.5。

公开(公告)号：US08143773B2

公开(公告)日：2012-03-27

申请号：US12933192

申请日：2009-03-17

申请人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa

发明人： Akira Suzuki ,  Tomoaki Kato ,  Mamoru Musasa

IPC分类号： H01T13/00

CPC分类号： H01T13/38

摘要： When an insulator of a spark plug receives an external force in a bending direction perpendicular to an axis at a rear end side body portion, a position C where the insulator is supported by a crimping portion via a packing acts as a fulcrum, and a stress is applied between the position C and a position B where the insulator is supported by a ledge portion via a packing. When an insulator is designed in which the balance of size and modulus of section is adjusted so that τA which denotes a proof strength against bending between a rear end position A of the insulator and the position C and τB which denotes a proof strength against bending between the position B and the position C satisfy 0.71≦τA/τB≦1.27, cracks can be prevented.

摘要翻译： 当火花塞的绝缘体在与后端侧主体部分的轴线垂直的弯曲方向上接收到外力时，绝缘体经由填料被压接部支撑的位置C用作支点，并且应力 施加在位置C和位置B之间，其中绝缘体通过包装被凸缘部分支撑。 当设计绝缘体时，其中调节截面尺寸和模量的平衡，使得表示绝缘体的后端位置A与位置C之间的弯曲的抵抗强度的τA和表示在绝缘体的位置C之间的抗弯强度的抗弯强度的τB 位置B和位置C满足0.71＆nlE;τA/τB＆nlE; 1.27，可以防止裂纹。

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：US08476817B2

公开(公告)日：2013-07-02

申请号：US13146816

申请日：2010-01-27

申请人： Naomichi Miyashita ,  Mamoru Musasa ,  Akira Suzuki ,  Kazuyoshi Torii ,  Tomoaki Kato

发明人： Naomichi Miyashita ,  Mamoru Musasa ,  Akira Suzuki ,  Kazuyoshi Torii ,  Tomoaki Kato

IPC分类号： H01T13/20

CPC分类号： H01T13/39 ,  H01T13/32

摘要： The present invention provides a spark plug which is capable of suppressing a occurrence of crack and separation by determining a structural configuration of a melting portion formed in a junction portion between a discharge portion and a pedestal portion which form an ignition portion that protrudes from a ground electrode. In a profile line shape of a cross section including a center axis P of an ignition portion 80, an exposure surface 88 of a melting portion 83 connects a side surface 82 of a discharge portion 81 and a side surface 85 of a pedestal portion 84. Further, an exterior angle θ formed between an imaginary line Q, which passes through a boundary position X1 between the melting portion 83 and the pedestal portion 84 and a boundary position X2 between the melting portion 83 and the discharge portion 81, and the center axis P at a node C, satisfies 135°≦θ≦175°. Furthermore, a proportion T/S of a forming depth T of the melting portion 83 to an outside diameter S of the discharge portion 81 satisfies T/S≧0.5.

摘要翻译： 本发明提供一种火花塞，其能够通过确定在形成从地面突出的点火部的排出部和基座部之间的接合部中形成的熔融部的结构构造来抑制裂纹和分离的发生 电极。 在包括点火部分80的中心轴线P的截面的轮廓线形状中，熔化部分83的暴露表面88连接排出部分81的侧表面82和基座部分84的侧表面85。 此外，在通过熔融部83和基座部84之间的边界位置X1的虚拟线Q与熔化部83与排出部81之间的边界位置X2之间形成的外角θ和中心轴 P在节点C处满足135°@ @ @ 175°。 此外，熔融部83的成形深度T与排出部81的外径S的比例T / S满足T /S≥0.5。

公开(公告)号：US20100264823A1

公开(公告)日：2010-10-21

申请号：US12734534

申请日：2009-03-23

申请人： Akira Suzuki ,  Tomoaki Kato ,  Tsutomu Shibata ,  Mamoru Musasa

发明人： Akira Suzuki ,  Tomoaki Kato ,  Tsutomu Shibata ,  Mamoru Musasa

IPC分类号： H01T13/08

CPC分类号： H01T13/34

摘要： A spark plug with excellent vibration resistance performance and resistor load life-span characteristics, and a reduced diameter which is achieved by strengthening adhesion between a resistor and a conductive glass sealing layer.

摘要翻译： 具有优异的抗振性能和电阻器寿命特性的火花塞，以及通过增强电阻器和导电玻璃密封层之间的粘附力而实现的减小的直径。