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    Method-for producing a spark plug, and spark plug
    21.
    发明申请
    Method-for producing a spark plug, and spark plug 有权
    用于制造火花塞和火花塞的方法

    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。

    Spark plug
    22.
    发明申请
    Spark plug 有权
    火花塞

    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。

    Spark plug having an oil film on an intermediate portion of the insulator or intermediate portion of the metallic shell
    23.
    发明授权
    Spark plug having an oil film on an intermediate portion of the insulator or intermediate portion of the metallic shell 有权
    火花塞在金属壳的绝缘体或中间部分的中间部分上具有油膜

    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。

    Spark plug and producing method therefor
    25.
    发明授权
    Spark plug and producing method therefor 失效
    火花塞及其制作方法

    公开(公告)号：US06768249B1

    公开(公告)日：2004-07-27

    申请号：US09645599

    申请日：2000-08-25

    申请人： Hiroaki Nasu ,  Wataru Matsutani

    发明人： Hiroaki Nasu ,  Wataru Matsutani

    IPC分类号： H01J1320

    CPC分类号： C23C22/36 ,  C23C2222/10 ,  H01T13/39 ,  H01T21/02

    摘要： In a spark plug, a complex chromate coat 42 that contains a chromium component and a phosphorus component as cationic components, at least 90 wt % of the chromium component being trivalent chromium and the phosphorus component being present in an amount of 1 to 15 wt % as calculated for PO4, is formed on the surface of the galvanized main metal shell 1 of a spark plug. If a silicon component is substituted for the phosphorus component, it may be present in an amount of 5 to 75 wt % as calculated for SiO2.

    摘要翻译： 在火花塞中，含有铬成分和磷成分作为阳离子成分的复合铬酸盐皮42，铬成分为三价铬的至少90重量％，磷成分的含量为1〜15重量％ 按照PO4计算，形成在火花塞的镀锌主金属壳1的表面上。 如果将硅组分代替磷组分，则其可以按SiO 2计算为5至75重量％的量存在。

    Spark plug for internal combustion engine
    26.
    发明授权
    Spark plug for internal combustion engine 失效
    内燃机火花塞

    公开(公告)号：US06597089B2

    公开(公告)日：2003-07-22

    申请号：US09742384

    申请日：2000-12-22

    申请人： Wataru Matsutani

    发明人： Wataru Matsutani

    IPC分类号： H01T1320

    CPC分类号： H01T13/39

    摘要： A spark plug including a center electrode which extends in the axial direction and is composed of a body and an electrode whose root end is joined to the end face of the body. The distance between a joined portion of the body and the electrode tip and the face of a free end of the electrode tip is at least 0.15 mm, particularly at least 0.2 mm. A diametral dimension of the electrode tip measured at a position located at the interface between the electrode tip and the joined portion and nearest to the free end of the electrode tip is at least 0.2 mm, particularly at least 0.25 mm, greater than a diametral dimension of the electrode tip measured at the free end. The spark plug suppresses lateral consumption of the electrode tip arising in the vicinity of a joined portion formed through welding.

    摘要翻译： 一种火花塞，其包括沿轴向延伸并由主体构成的中心电极和其端部与主体的端面接合的电极。 本体的接合部与电极头的距离与电极头的自由端面的距离为0.15mm以上，特别优选为0.2mm以上。 在位于电极末端和接合部分之间并且最靠近电极末端自由端的位置的位置处测量的电极尖端的直径尺寸至少为0.2mm，特别是至少0.25mm，大于直径尺寸 的电极尖端在自由端测量。 火花塞抑制由焊接形成的接合部附近产生的电极头的横向消耗。

    Method of manufacturing spark plug and spark plug
    27.
    发明授权
    Method of manufacturing spark plug and spark plug 有权
    制造火花塞和火花塞的方法

    公开(公告)号：US06533628B1

    公开(公告)日：2003-03-18

    申请号：US09546206

    申请日：2000-04-10

    申请人： Wataru Matsutani

    发明人： Wataru Matsutani

    IPC分类号： H01T2102

    CPC分类号： H01T21/02

    摘要： A noble metal chip 31′ is superimposed on a surface of a central electrode 3 made of a heat resisting alloy, the main component of which is Ni or Fe, to which the chip is secured so that a superimposed assembly 70 is constituted. A perimeter laser weld portion 10 across the noble metal chip 31′ and a chip securing surface forming portion is formed around the outer surface of the chip of the superimposed assembly 70. Thus, the noble metal chip 31′ is secured to the chip securing surface so that a noble-metal igniting portion 31 is constituted. To form the perimeter laser weld portion 10 which has a maximum outer dimension dmax which is smaller than 2.0 mm and which does not reach the discharging surface 31a in a direction of the thickness of the noble metal chip 31′, a laser beam source 50 is, as a light source of laser beams for use in a welding operation, employed-which is arranged such that energy per pulse is 2 J to 6 J, the length of the pulse is 1 millisecond to 10 milliseconds and the pulse generating frequency is 2 pulse/second to 20 pulse/second.

    摘要翻译： 贵金属芯片31'重叠在由耐热合金制成的中心电极3的表面上，该耐热合金的主要成分是Ni或Fe，芯片被固定到其上，从而构成叠加的组件70。 在叠加组件70的芯片的外表面周围形成了跨越贵金属芯片31'的周边激光焊接部分10和芯片固定表面形成部分。因此，贵金属芯片31'固定到芯片固定表面 从而构成贵金属点火部31。 为了形成最大外形尺寸dmax小于2.0mm并且在贵金属芯片31'的厚度方向上不到达排出表面31a的周边激光焊接部分10，激光束源50 作为用于焊接操作的激光束的光源，其被布置为使得每脉冲的能量为2J至6J，脉冲的长度为1毫秒至10毫秒，脉冲产生频率为2 脉冲/秒至20脉冲/秒。

    Spark plug with iridium-based alloy chip
    28.
    发明授权
    Spark plug with iridium-based alloy chip 有权
    火花塞与铱基合金芯片

    公开(公告)号：US06528929B1

    公开(公告)日：2003-03-04

    申请号：US09437359

    申请日：1999-11-10

    申请人： Wataru Matsutani ,  Hiroaki Nasu

    发明人： Wataru Matsutani ,  Hiroaki Nasu

    IPC分类号： H01T1339

    CPC分类号： H01T13/39

    摘要： A spark plug includes a chip made of iridium. The distance E between the chip and a copper core of a core rod of the center electrode is not greater than 3.5 mm. The core rod has a diameter D1 of 1.4 mm to 2.6 mm. The ratio of a chip diameter D2 to the core rod diameter D1, or D2/D1, is not greater than 0.50.

    摘要翻译： 火花塞包括由铱制成的芯片。 芯片与中心电极芯棒的铜芯之间的距离E不大于3.5mm。 芯棒的直径D1为1.4mm至2.6mm。 芯片直径D2与芯棒直径D1或D2 / D1的比例不大于0.50。

    Captive spark plug gasket
    29.
    发明授权
    Captive spark plug gasket 有权
    俘虏火花塞垫片

    公开(公告)号：US06489709B1

    公开(公告)日：2002-12-03

    申请号：US09531602

    申请日：2000-03-20

    申请人： Hideki Teramura ,  Wataru Matsutani

    发明人： Hideki Teramura ,  Wataru Matsutani

    IPC分类号： H01T1304

    CPC分类号： H01T13/08

    摘要： A gasket for a threaded element such as a spark plug to be screwed into a threaded hole of a support such as a cylinder head is provided. The threaded element has a threaded portion and an annular seat portion. The gasket is installed on the threaded element and compressed between the seat portion and an outer surface of the support around a threaded hole, when the threaded element is screwed into the threaded hole, to provide a seal between the threaded portion and the threaded hole. The gasket is formed from an annular sheet metal and in the form of an annular strip of a cross section including a plurality of bent portions. The cross section is made by a plane including a center axis of the gasket and of a such a bent shape as to enable an imaginary reference line which is located on the above described plane and parallel with the center axis, to cross at least three portions of the cross section. The initial axial size of the gasket, i.e., the height of the gasket before the gasket is compressed, is at least 2.5 mm. When pressure within a proper pressure range is applied to the gasket, i.e., within a proper pressure range from 6 to 12 kgf/mm2, a variation &Dgr;&agr; of compressive deformation &agr; of the gasket corresponding to advance or axial movement of the threaded element by at least 0.5 pitch of the thread, i.e., corresponding to movement of the threaded element resulting from at least 0.5 turn is retained.

    摘要翻译： 提供用于螺纹元件的垫圈，例如火花塞被拧入诸如气缸盖的支撑件的螺纹孔中。 螺纹元件具有螺纹部分和环形座部分。 当螺纹元件旋入螺纹孔时，垫圈安装在螺纹元件上并且在座部与支撑件的外表面之间被压缩在螺纹孔周围，以在螺纹部分和螺纹孔之间提供密封。 垫圈由环形金属板形成，并且是包括多个弯曲部分的横截面的环形带的形式。 横截面由包括垫圈的中心轴线的平面和具有这样的弯曲形状的平面制成，以使得位于上述平面上并与中心轴线平行的虚拟参考线能够穿过至少三个部分 的横截面。 衬垫的初始轴向尺寸，即衬垫被压缩之前垫圈的高度至少为2.5mm。 当在适当的压力范围内的压力施加到垫圈时，即在6至12kgf / mm 2的适当压力范围内时，垫圈的压缩变形α的变化Δδ对应于螺纹元件的前进或轴向运动 螺纹的至少0.5间距，即对应于由至少0.5匝引起的螺纹元件的移动被保留。