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公开(公告)号：US08247740B2
公开(公告)日：2012-08-21
申请号：US12532849
申请日：2008-03-27
IPC分类号： H01T13/32
CPC分类号： H01T13/32 , H01T21/02 , Y10T29/49083
摘要： A spark plug of the present invention includes a cylindrical metal shell, a cylindrical ceramic insulator retained in the metal shell, a center electrode retained in the ceramic insulator and extending in an axial direction, and a ground electrode formed into a bent shape and having a rear end portion fixed to the metal shell and a front end portion facing a front end portion of the center electrode with a gap left therebetween. The ground electrode contains a large thickness region formed on a rear end side thereof with a large thickness, a small thickness region formed on a front end side thereof with a smaller thickness than that of the large thickness region, a protruding region formed on the small thickness region and facing the center electrode and a thickness changing region formed between the large thickness region and the small thickness region and located at a different position from a position of a minimum curvature radius region of the bent shape of the ground electrode.
摘要翻译： 本发明的火花塞包括圆柱形金属壳，保持在金属壳中的圆柱形陶瓷绝缘体，保持在陶瓷绝缘体中并沿轴向延伸的中心电极和形成为弯曲形状的接地电极，并具有 固定在金属壳体上的后端部分和面对中心电极的前端部分的前端部分，其间留有间隙。 接地电极在其后端侧形成有大厚度的厚度区域，厚度大的区域形成在其前端侧，厚度小于大厚度区域的厚度区域，形成在小型区域上的突出区域 厚度区域和面对中心电极的厚度变化区域和形成在大厚度区域和小厚度区域之间并且位于与接地电极的弯曲形状的最小曲率半径区域的位置不同的位置的厚度变化区域。
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2.发明授权Spark plug for internal combustion engine and method for producing the spark plug 有权用于内燃机的火花塞和产生火花塞的方法公开(公告)号：US08013504B2
公开(公告)日：2011-09-06
申请号：US12274828
申请日：2008-11-20
IPC分类号： H01T13/20
摘要： A spark plug including: a center electrode; a substantially cylindrical insulator; a cylindrical metal shell; a ground electrode having a base end joined to a leading end portion of the metal shell and a distal end bent toward the axis line. The ground electrode includes: a thick portion provided on a base end side, a thin portion provided on a distal end side, and a stepped portion provided on an inner peripheral surface between the thick portion and the thin portion. A noble metal tip is joined to and partially embedded in the inner peripheral surface of the thin portion and disposed to form a gap between the noble metal tip and the leading end portion of the center electrode.
摘要翻译： 一种火花塞，包括：中心电极; 一个基本上圆柱形的绝缘体; 圆柱形金属外壳; 接地电极，其具有接合到所述金属壳的前端部的基端和朝向所述轴线弯曲的远端。 接地电极包括：设置在基端侧的厚壁部，设置在前端侧的薄壁部和设置在厚壁部与薄壁部之间的内周面的台阶部。 贵金属端头接合并部分地嵌入薄壁的内周面，并且设置成在贵金属端头和中心电极的前端部之间形成间隙。
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3.发明授权Spark plug for internal combustion engine having ground electrode with thick, thin and stepped portion and method for producing the spark plug 有权用于内燃机的火花塞，其具有厚，薄和阶梯部分的接地电极以及用于产生火花塞的方法公开(公告)号：US08013503B2
公开(公告)日：2011-09-06
申请号：US12274423
申请日：2008-11-20
摘要： A spark plug including: a ground electrode including a thick portion provided on a base end side, a thin portion provided on a distal end side, and a stepped portion provided on an inner peripheral surface between the thick portion and the thin portion; a noble metal tip partially embedded in an inner peripheral surface of the thin portion; and a bulge portion provided on the inner peripheral surface of the thin portion between the stepped portion and the noble metal tip. When viewed from a side surface of the ground electrode, a relationship [a protruding height of the noble metal tip from the inner peripheral surface of the thin portion]≧[a protruding height of the bulge portion from the inner peripheral surface of the thin portion].
摘要翻译： 一种火花塞，包括：接地电极，其包括设置在基端侧的厚部，设置在前端侧的薄部，以及设置在所述厚部与所述薄部之间的内周面的台阶部; 部分地嵌入所述薄部的内周面的贵金属电极头; 以及设置在阶梯部和贵金属端之间的薄壁部的内周面的凸部。 当从接地电极的侧面观察时，贵金属电极头从薄壁部的内周面突出的高度相对于凸部的从薄壁部的内周面突出的高度 ]。
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公开(公告)号：US20100084391A1
公开(公告)日：2010-04-08
申请号：US12532849
申请日：2008-03-27
IPC分类号： F23Q7/22
CPC分类号： H01T13/32 , H01T21/02 , Y10T29/49083
摘要： A spark plug of the present invention includes a cylindrical metal shell, a cylindrical ceramic insulator retained in the metal shell, a center electrode retained in the ceramic insulator and extending in an axial direction, and a ground electrode formed into a bent shape and having a rear end portion fixed to the metal shell and a front end portion facing a front end portion of the center electrode with a gap left therebetween. The ground electrode contains a large thickness region formed on a rear end side thereof with a large thickness, a small thickness region formed on a front end side thereof with a smaller thickness than that of the large thickness region, a protruding region formed on the small thickness region and facing the center electrode and a thickness changing region formed between the large thickness region and the small thickness region and located at a different position from a position of a minimum curvature radius region of the bent shape of the ground electrode.
摘要翻译： 本发明的火花塞包括：圆柱形金属壳体，保持在金属壳体中的圆柱形陶瓷绝缘体，保持在陶瓷绝缘体中并沿轴向延伸的中心电极，以及形成为弯曲形状的接地电极， 固定在金属壳体上的后端部分和面对中心电极的前端部分的前端部分，其间留有间隙。 接地电极在其后端侧形成有大厚度的厚度大的区域，在其前端侧形成有比厚度大的区域的厚度小的小的厚度区域，形成在小型区域上的突出区域 厚度区域和面对中心电极的厚度变化区域和形成在大厚度区域和小厚度区域之间并且位于与接地电极的弯曲形状的最小曲率半径区域的位置不同的位置的厚度变化区域。
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公开(公告)号：US20100109502A1
公开(公告)日：2010-05-06
申请号：US12532850
申请日：2008-03-27
摘要： There is provided according to the present invention a manufacturing method of a spark plug that includes a cylindrical metal shell, a cylindrical ceramic insulator retained in the metal shell, a center electrode retained in the ceramic insulator and extending in an axial direction and a ground electrode having a rear end portion fixed to the metal shell and a front end portion formed with a protruding region facing a front end portion of the center electrode with a gap left therebetween and being of substantially uniform thickness except for an area where the protrusion is formed. The spark plug manufacturing method includes a press forming step for pressing the whole of a ground electrode material for constituting the ground electrode, so as to form a protruding region on a front end portion of the ground electrode material and a welding step for, after the press forming step, welding a rear end portion of the ground electrode material to the metal shell.
摘要翻译： 根据本发明，提供了一种火花塞的制造方法，该火花塞包括圆筒形金属壳，保持在金属壳中的圆柱形陶瓷绝缘体，保持在陶瓷绝缘体中并沿轴向延伸的中心电极和接地电极 具有固定到所述金属壳体的后端部分，以及形成有与所述中心电极的前端部分相对的突出区域的前端部分，其间具有间隙，并且除了形成所述突起的区域之外，其厚度基本均匀。 火花塞的制造方法包括：压制成形工序，用于按压用于构成接地电极的接地电极材料的整体，以在接地电极材料的前端部分上形成突出区域;以及焊接步骤， 冲压成形步骤，将接地电极材料的后端部焊接到金属壳。
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6.发明申请公开(公告)号：US20090140624A1
公开(公告)日：2009-06-04
申请号：US12274828
申请日：2008-11-20
摘要： A spark plug including: a center electrode; a substantially cylindrical insulator; a cylindrical metal shell; a ground electrode having a base end joined to a leading end portion of the metal shell and a distal end bent toward the axis line. The ground electrode includes: a thick portion provided on a base end side, a thin portion provided on a distal end side, and a stepped portion provided on an inner peripheral surface between the thick portion and the thin portion. A noble metal tip is joined to and partially embedded in the inner peripheral surface of the thin portion and disposed to form a gap between the noble metal tip and the leading end portion of the center electrode.
摘要翻译： 一种火花塞，包括：中心电极; 一个基本上圆柱形的绝缘体; 圆柱形金属外壳; 接地电极，其具有接合到所述金属壳的前端部的基端和朝向所述轴线弯曲的远端。 接地电极包括：设置在基端侧的厚壁部，设置在前端侧的薄壁部和设置在厚壁部与薄壁部之间的内周面的台阶部。 贵金属端头接合并部分地嵌入薄壁的内周面，并且设置成在贵金属端头和中心电极的前端部之间形成间隙。
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7.发明申请SPARK PLUG FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR PRODUCING THE SPARK PLUG 有权用于内燃机的火花塞和用于生产火花塞的方法公开(公告)号：US20090134764A1
公开(公告)日：2009-05-28
申请号：US12274423
申请日：2008-11-20
摘要： A spark plug including: a ground electrode including a thick portion provided on a base end side, a thin portion provided on a distal end side, and a stepped portion provided on an inner peripheral surface between the thick portion and the thin portion; a noble metal tip partially embedded in an inner peripheral surface of the thin portion; and a bulge portion provided on the inner peripheral surface of the thin portion between the stepped portion and the noble metal tip. When viewed from a side surface of the ground electrode, a relationship [a protruding height of the noble metal tip from the inner peripheral surface of the thin portion]≧[a protruding height of the bulge portion from the inner peripheral surface of the thin portion].
摘要翻译： 一种火花塞，包括：接地电极，其包括设置在基端侧的厚部，设置在前端侧的薄部，以及设置在所述厚部与所述薄部之间的内周面的台阶部; 部分地嵌入所述薄部的内周面的贵金属电极头; 以及设置在阶梯部和贵金属端之间的薄壁部的内周面的凸部。 当从接地电极的侧面观察时，贵金属电极头从薄壁部的内周面的突出高度的关系为=凸出部从薄壁的内周面的突出高度 一部分]。
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公开(公告)号：US08298030B2
公开(公告)日：2012-10-30
申请号：US12532850
申请日：2008-03-27
摘要： There is provided according to the present invention a manufacturing method of a spark plug that includes a cylindrical metal shell, a cylindrical ceramic insulator retained in the metal shell, a center electrode retained in the ceramic insulator and extending in an axial direction and a ground electrode having a rear end portion fixed to the metal shell and a front end portion formed with a protruding region facing a front end portion of the center electrode with a gap left therebetween and being of substantially uniform thickness except for an area where the protrusion is formed. The spark plug manufacturing method includes a press forming step for pressing the whole of a ground electrode material for constituting the ground electrode, so as to form a protruding region on a front end portion of the ground electrode material and a welding step for, after the press forming step, welding a rear end portion of the ground electrode material to the metal shell.
摘要翻译： 根据本发明，提供了一种火花塞的制造方法，该火花塞包括圆筒形金属壳，保持在金属壳中的圆柱形陶瓷绝缘体，保持在陶瓷绝缘体中并沿轴向延伸的中心电极和接地电极 具有固定到所述金属壳体的后端部分，以及形成有与所述中心电极的前端部分相对的突出区域的前端部分，其间具有间隙，并且除了形成所述突起的区域之外，其厚度基本均匀。 火花塞的制造方法包括：压制成形工序，用于按压用于构成接地电极的接地电极材料的整体，以在接地电极材料的前端部分上形成突出区域;以及焊接步骤， 冲压成形步骤，将接地电极材料的后端部焊接到金属壳。
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公开(公告)号：US08188641B2
公开(公告)日：2012-05-29
申请号：US12743851
申请日：2008-11-20
IPC分类号： H01T13/20
摘要： A center electrode includes a tapered electrode base member mount and a noble metal tip joined to the electrode base member mount via a fused portion in which the component of the noble metal tip and the component of the electrode base member mount are fused. In this state, the cross section area S1 at a tip side boundary between the fused portion and the noble metal tip and the cross section area S2 at a base member side boundary between the fused portion and the electrode base member mount satisfy the relational expression of S1
摘要翻译： 中心电极包括锥形电极基体部件安装座和通过熔融部分接合到电极基体部件安装件的贵金属电极头，贵金属电极头部件和电极基体部件安装件的部件熔合在其中。 在这种状态下，熔融部分和贵金属电极头之间的尖端侧边界处的截面面积S1和熔融部分和电极基底部件安装座之间的基底部分边界处的截面面积S2满足关系式 S1
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10.发明授权Spark plug having specific configuration of center electrode with respect to outer electrode 有权具有相对于外部电极的中心电极的具体结构的火花塞公开(公告)号：US07821186B2
公开(公告)日：2010-10-26
申请号：US12339599
申请日：2008-12-19
IPC分类号： H01T13/20
摘要： A spark plug includes an outer electrode including an outer electrode tip of which a distal end surface is spaced from an outer peripheral surface of a leading end portion of a center electrode to define a spark discharge gap. A protruding insulator portion of a cylindrical insulator protrudes at least 1.0 mm from a leading end surface of a cylindrical metal shell. A protruding center electrode portion of the center electrode protrudes at least 3.5 mm from the leading end surface of the cylindrical metal shell. A relationship (θ1+θ2)/2≧75 degrees is satisfied where the angle θ1 is defined as a central angle (degrees) of a first circular sector having a point B1 as a center thereof, and the angle θ2 is an average value (degrees) of the central angles of two second circular sectors having the point B1 as a center thereof.
摘要翻译： 火花塞包括外电极，外电极端部的远端表面与中心电极的前端部分的外周表面间隔开以限定火花放电间隙。 圆柱形绝缘体的突出的绝缘体部分从圆柱形金属壳的前端表面突出至少1.0mm。 中心电极的突出的中心电极部分从圆柱形金属壳的前端表面突出至少3.5mm。 将角度和角度1定义为具有点B1为中心的第一圆形扇形的中心角度（度），并且角度（θ）与角度（θ）之间的关系（＆Thetas; 1 +＆thetas; 2）/2≥75度 ＆thetas; 2是以点B1为中心的两个第二圆形扇形体的中心角度的平均值（度）。
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