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    • 2. 发明授权
    • Method for producing spark plug by projection welding and spark plug thereof
    • 通过突起焊接和火花塞生产火花塞的方法
    • US08052495B2
    • 2011-11-08
    • US12057242
    • 2008-03-27
    • Tomoaki KatoKazuyoshi ToriiMamoru Musasa
    • Tomoaki KatoKazuyoshi ToriiMamoru Musasa
    • H01T21/02
    • H01T13/32H01T21/02
    • A spark plug (100) including a center electrode (130) and a ground electrode (140), which is formed by joining a ground electrode chip (143) to a ground electrode base material (141) via an intermediate member (142). A method for producing the spark plug (100) includes providing a projecting portion (142p) on the intermediate member (142), and projection-welding the intermediate member (142) to the ground electrode base material (141) by means of the projecting portion (142p), to thereby join the intermediate member 142 to the ground electrode base material (141). Further, the intermediate member (142) of the spark plug (100) includes a cylindrical columnar portion (142e) which is joined to the ground electrode chip (143), and a flange portion (142d) which is joined to the ground electrode base material (141) and which flange portion (142d) has a diameter greater than that of the cylindrical columnar portion (142e).
    • 一种火花塞(100),包括通过中间构件(142)将接地电极芯片(143)接合到接地电极基材(141)而形成的中心电极(130)和接地电极(140)。 一种火花塞(100)的制造方法,其特征在于,在所述中间部件(142)上设置突出部(142p),通过所述突出部(142)将所述中间部件(142)投射到所述接地电极母材 (142p),从而将中间构件142接合到接地电极基材(141)。 此外,火花塞(100)的中间部件(142)包括与接地电极芯片(143)接合的圆筒状的柱状部(142e)和与接地电极基体接合的凸缘部(142d) 材料(141),并且所述凸缘部分(142d)的直径大于圆柱形柱状部分(142e)的直径。
    • 3. 发明授权
    • Spark plug
    • 火花塞
    • US08044562B2
    • 2011-10-25
    • US12741764
    • 2008-11-12
    • Mamoru MusasaNaomichi MiyashitaKazuyoshi Torii
    • Mamoru MusasaNaomichi MiyashitaKazuyoshi Torii
    • H01T13/20
    • H01T13/39
    • There is provided a spark section (80) of needle-like shape protruding from an inner surface (33) of a ground electrode (30) to define a spark gap between the spark section and an electrode tip on a center electrode. The spark section (80) has a noble metal member (81) and an intermediate member (86) joined to each other. The materials of the noble metal member (81) and the intermediate member (86) are selected in such a manner that the thermal conductivity of the intermediate member (86) is lower than that of the noble metal member (81). This limits heat radiation through the heat radiation passage from the noble metal member (81) through the intermediate member (86) to the ground electrode (30) so as to maintain the noble metal member (81) at a higher temperature than conventional types and reduce a quenching effect of the noble metal member (81) on a flame core generated in the spark gap for improvement in ignition performance.
    • 设置从接地电极(30)的内​​表面(33)突出的针状的火花部(80),以在火花部和中心电极上的电极尖之间限定火花隙。 火花部(80)具有彼此接合的贵金属部件(81)和中间部件(86)。 选择贵金属构件(81)和中间构件(86)的材料,使得中间构件(86)的导热率低于贵金属构件(81)的导热率。 这就限制了通过从贵金属构件(81)穿过中间构件(86)到接地电极(30)的散热通道的热辐射,以便将贵金属构件(81)保持在比常规类型更高的温度 降低贵金属构件(81)对火花隙中产生的火焰核心的淬火效果,以提高点火性能。
    • 4. 发明申请
    • METHOD FOR PRODUCING SPARK PLUG AND SPARK PLUG
    • 生产火花塞和火花塞的方法
    • US20080238282A1
    • 2008-10-02
    • US12057242
    • 2008-03-27
    • Tomoaki KatoKazuyoshi ToriiMamoru Musasa
    • Tomoaki KatoKazuyoshi ToriiMamoru Musasa
    • H01T13/20
    • H01T13/32H01T21/02
    • A spark plug (100) including a center electrode (130) and a ground electrode (140), which is formed by joining a ground electrode chip (143) to a ground electrode base material (141) via an intermediate member (142). A method for producing the spark plug (100) includes providing a projecting portion (142p) on the intermediate member (142), and projection-welding the intermediate member (142) to the ground electrode base material (141) by means of the projecting portion (142p), to thereby join the intermediate member 142 to the ground electrode base material (141). Further, the intermediate member (142) of the spark plug (100) includes a cylindrical columnar portion (142e) which is joined to the ground electrode chip (143), and a flange portion (142d) which is joined to the ground electrode base material (141) and which flange portion (142d) has a diameter greater than that of the cylindrical columnar portion (142e).
    • 一种火花塞(100),包括通过中间构件(142)将接地电极芯片(143)接合到接地电极基材(141)而形成的中心电极(130)和接地电极(140)。 一种火花塞(100)的制造方法,其特征在于,在所述中间部件(142)上设置突出部(142p),通过所述中间部件(142)将所述中间部件(142)投射到所述接地电极母材 突起部分(142p),从而将中间构件142接合到接地电极基材(141)。 此外,火花塞(100)的中间构件(142)包括接合到接地电极芯片(143)的圆柱形柱状部分(142e)和接合到地面的凸缘部分(142d) 电极基体材料(141),并且所述凸缘部分(142d)的直径大于圆柱形部分(142e)的直径。
    • 5. 发明申请
    • Spark plug manufacturing method
    • 火花塞制造方法
    • US20060276097A1
    • 2006-12-07
    • US10565902
    • 2004-11-18
    • Akira SuzukiTomoaki KatoKazuyoshi ToriiAkikazu Taido
    • Akira SuzukiTomoaki KatoKazuyoshi ToriiAkikazu Taido
    • H01T13/20
    • H01T21/02H01T13/20H01T13/39
    • There is provided a method for producing a spark plug in which welding strength between a noble metal tip and an electrode joined by laser welding can be restrained from becoming weak. A noble metal tip (90) to be joined to a center electrode (2) or ground electrode of a spark plug to form a spark discharge gap is resistance-welded to each electrode containing no noble metal and then laser-welded. In the noble metal tip (90) exposed under a severe environment involving spark discharge, a molten portion (80) formed in such a manner that a portion of the noble metal tip (90) and a portion of the electrode are melted by laser welding and a non-molten portion (95) on the noble metal tip (90) side are apt to be peeled from each other in a boundary surface (83) between the molten portion (80) and the non-molten portion (95). The noble metal content in the molten portion (80) however becomes higher because a flange portion is formed in a bottom portion by pressing force applied on the noble metal tip (90) at the time of resistance welding and then irradiated with a laser beam. Accordingly, peeling can be prevented from occurring in the boundary surface (83).
    • 提供一种用于制造火花塞的方法,其中可以抑制贵金属电极头和通过激光焊接接合的电极之间的焊接强度变弱。 要连接到火花塞的中心电极(2)或接地电极以形成火花放电间隙的贵金属端头(90)被电阻焊接到不含贵金属的每个电极上,然后被激光焊接。 在涉及火花放电的恶劣环境下露出的贵金属电极头(90)中,以使得贵金属电极头(90)的一部分和电极的一部分通过激光焊接而熔化的方式形成的熔融部(80) 并且在熔融部分(80)和非熔融部分(95)之间的边界表面(83)中,在贵金属端头(90)侧上的非熔融部分(95)易于彼此剥离。 然而,熔融部分(80)中的贵金属含量变高,因为通过在电阻焊接时施加在贵金属电极头(90)上的压力而在底部形成凸缘部分,然后用激光束照射。 因此,能够防止在边界面(83)发生剥离。