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公开(公告)号：EP1976079A3
公开(公告)日：2012-07-18
申请号：EP08005047.9
申请日：2008-03-18
发明人： Moribe, Mai , Suzuki, Akira , Honda, Toshitaka
IPC分类号： H01T13/38
CPC分类号： H01T13/38
摘要： There is provided a spark plug of an internal combustion engine, including a cylindrical metal shell, an insulator retained in the metal shell and having a through hole in an axial direction of the spark plug and a center electrode fitted in the through hole of the insulator. The insulator includes a rear body portion, a middle body portion and a large-diameter portion located between and protruded radially outwardly from the rear and middle body portions to define a rear shoulder section connected to the rear body portion and a front shoulder section connected to the middle body portion. For strength improvements, the insulator has a first glaze layer extending over the rear body portion and the rear shoulder section of the large-diameter portion and a second glaze layer extending over at least part of the middle body portion from some point on the front shoulder section of the large-diameter portion.
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公开(公告)号：EP1760852B1
公开(公告)日：2009-10-14
申请号：EP06018020.5
申请日：2006-08-29
发明人： Moribe, Mai , Suzuki, Akira
CPC分类号： H01T21/02 , H01T13/36 , Y10T29/49231
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公开(公告)号：EP1976079A2
公开(公告)日：2008-10-01
申请号：EP08005047.9
申请日：2008-03-18
发明人： Moribe, Mai , Suzuki, Akira , Honda, Toshitaka
IPC分类号： H01T13/38
CPC分类号： H01T13/38
摘要： There is provided a spark plug of an internal combustion engine, including a cylindrical metal shell, an insulator retained in the metal shell and having a through hole in an axial direction of the spark plug and a center electrode fitted in the through hole of the insulator. The insulator includes a rear body portion, a middle body portion and a large-diameter portion located between and protruded radially outwardly from the rear and middle body portions to define a rear shoulder section connected to the rear body portion and a front shoulder section connected to the middle body portion. For strength improvements, the insulator has a first glaze layer extending over the rear body portion and the rear shoulder section of the large-diameter portion and a second glaze layer extending over at least part of the middle body portion from some point on the front shoulder section of the large-diameter portion.
摘要翻译： 提供了一种内燃机的火花塞，其包括圆柱形金属壳体，保持在金属壳体中并且沿火花塞的轴向方向具有通孔的绝缘体以及装配在绝缘体的通孔中的中心电极 。 绝缘体包括后体部分，中体部分和位于后体部分和中间体部分之间并从其径向向外突出的大直径部分，以限定连接到后体部分的后肩部分和与肩部分连接的前肩部分 中间身体部分。 为了提高强度，绝缘体具有在大直径部分的后主体部分和后肩部分上延伸的第一釉层和在前肩部上的某点从中间主体部分的至少一部分延伸的第二釉层 大直径部分的截面。
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公开(公告)号：EP2216863A3
公开(公告)日：2014-07-23
申请号：EP10153039.2
申请日：2010-02-09
发明人： Suzuki, Akira , Nakamura, Mai , Musasa, Mamoru
IPC分类号： H01T21/02
CPC分类号： H01T21/02
摘要： A method for manufacturing a spark plug which includes: (a) preparing a metal shell; (b) preparing an insulator; (c) inserting the insulator in an insertion hole of the metal shell; (d) forming an intended crimping portion of the metal shell into a crimping portion; and (e) pressing a lower side portion of the metal shell closer to a position lower than the intended compressive deformation portion, and pressing the crimping portion of the metal shell in an axial direction to compressively deform the intended compressive deformation portion of the metal shell and thus seal a space between a stepped portion of the metal shell and a stepped portion of the insulator, wherein step (e) controls a pressing amount of a press in a constant value from the start of compressive deformation to the end thereof.
摘要翻译： 一种制造火花塞的方法，其包括：（a）制备金属壳; （b）制备绝缘体; （c）将绝缘体插入金属壳体的插入孔中; （d）将金属壳体的预期卷曲部分形成卷曲部分; （e）将所述金属壳的下侧部分压向比所述预定压缩变形部低的位置，并且将所述金属壳的所述压接部沿轴向压入，以使所述金属壳的所述预定压缩变形部压缩变形 并且因此密封所述金属壳的台阶部分和所述绝缘体的台阶部分之间的空间，其中步骤（e）将压机的压制量控制在从压缩变形开始到其末端的恒定值。
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公开(公告)号：EP2161802A3
公开(公告)日：2010-11-03
申请号：EP09169182.4
申请日：2009-09-01
发明人： Ban, Kenji , Kyuno, Jiro , Suzuki, Akira
摘要： [Objective] To provide a spark plug in which the rising of a ground electrode can be more reliably restrained.
[Means for Solution] In a spark plug 100, a ground electrode 4 is configured to have a core portion 41 extending from a proximal end section 4A toward a distal end section 4C via a bent section 4B, a heat transfer portion 42 extending from the proximal end section 4A toward the distal end section 4C via the bent section 4B, and an external layer 43 located externally of the core portion 41 and the heat transfer portion 42 and extending from the proximal end section 4A to the distal end section 4C via the bent section 4B. The external layer 43 is formed from a nickel-based alloy, which serves as a first metal being excellent in heat resistance and corrosion resistance. The heat transfer portion 42 is formed from copper, which serves as a second metal higher in thermal conductivity than the first metal. The core portion 41 is formed from pure nickel, which serves as a third metal higher in hardness than the second metal. The second metal is higher in linear thermal expansion coefficient than the first and third metals. As viewed on a section of the ground electrode 4 taken orthogonally to a direction along which the ground electrode 4 extends, at least at an intermediate position of the bent section 4B with respect to the direction, the center of the core portion 41 is offset toward a center electrode 3 from the center of the heat transfer portion 42.-
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公开(公告)号：EP2063509A2
公开(公告)日：2009-05-27
申请号：EP08020344.1
申请日：2008-11-21
发明人： Kyuno, Jiro , Suzuki, Akira , Moribe, Mai , Nakano, Yuichi , Musasa, Mamoru
IPC分类号： 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，其包括电极基体和芯部，经由熔融接合到所述中心电极的电极头; 保持中心电极的绝缘体; 保持绝缘体的金属壳和与金属壳接合的接地电极。 满足关系d‰¤2.1[mm]和-0.09×d + 0.33
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公开(公告)号：EP2216863B1
公开(公告)日：2019-08-28
申请号：EP10153039.2
申请日：2010-02-09
发明人： Suzuki, Akira , Nakamura, Mai , Musasa, Mamoru
IPC分类号： H01T21/02
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公开(公告)号：EP2395614B1
公开(公告)日：2017-08-09
申请号：EP11169323.0
申请日：2011-06-09
发明人： Nakamura, Mai , Suzuki, Akira
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公开(公告)号：EP2194622B1
公开(公告)日：2014-03-05
申请号：EP09178082.5
申请日：2009-12-04
发明人： Nakamura, Mai , Suzuki, Akira
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