公开(公告)号：US08519606B2

公开(公告)日：2013-08-27

申请号：US13392351

申请日：2010-06-23

申请人： Akira Suzuki ,  Mai Nakamura ,  Mamoru Musasa

发明人： Akira Suzuki ,  Mai Nakamura ,  Mamoru Musasa

IPC分类号： H01T13/20 ,  H01T21/02

CPC分类号： H01T13/36 ,  F02P13/00 ,  H01T21/02

摘要： A spark plug (1) includes an insulator (2) and a metal shell (3), including a middle section (41) positioned between a collar section (16) and a tool engaging section (19). The middle section (41) has a bulged section (42), a first slender section (43) and a second slender section (44) that is the most slender at a portion positioned further to the leading end side than the bulged section (42). In a cross-section including the axis CL1, when the distance between both slender sections (43) and (44) along the axis CL1 is F (mm) and the bulged amount to the inside in diametrical direction of a most bulged section (42M) with respect to an imaginary line that connects a portion that is positioned furthest to the inside in diametrical direction of both slender sections 43 and 44 is G (mm), the relationship 0.00

摘要翻译： 火花塞（1）包括绝缘体（2）和金属壳（3），其包括位于套环部分（16）和工具接合部分（19）之间的中间部分（41）。 中间部分（41）具有凸出部分（42），第一细长部分（43）和第二细长部分（44），该第一细长部分（43）和第二细长部分（44）在位于鼓风部分（42）的前端侧的部分处最细 ）。 在包括轴线CL1的横截面中，当沿着CL1的两个细长部分（43）和（44）之间的距离为F（mm）时，并且在最隆起部分（42M）的直径方向上的内部的膨胀量 ）相对于连接两个细长部43和44的径向内侧的部分的虚拟线为G（mm），满足关系0.00

公开(公告)号：US20120146484A1

公开(公告)日：2012-06-14

申请号：US13392351

申请日：2010-06-23

申请人： Akira Suzuki ,  Mai Nakamura ,  Mamoru Musasa

发明人： Akira Suzuki ,  Mai Nakamura ,  Mamoru Musasa

IPC分类号： H01T13/20 ,  H01T21/02

CPC分类号： H01T13/36 ,  F02P13/00 ,  H01T21/02

摘要： A generation of a stress corrosion cracking is prevented in a middle section. The spark plug 1 includes an insulator 2 that extends along an axis CL1 direction and a metal shell 3. The metal shell 3 includes a middle section 41 that is positioned between a collar section 16 and a tool engaging section 19. The middle section 41 has a bulged section 42 that bulges towards both the inside and the outside in the diametrical direction, a first slender section 43 that is the most slender at a portion that is positioned further to the rear end side in the axis CL1 direction than the bulged section 42 and a second slender section 44 that is the most slender at a portion that is positioned further to the leading end side in the axis CL1 direction than the bulged section 42 and the bulged section 42 has the most bulged section 42M that bulges toward the most inside of diametrical direction. In a cross-section that includes the axis CL1, when the distance between both slender sections 43 and 44 along the axis CL1 is F (mm) and the bulged amount to the inside in diametrical direction of the most bulged section 42M with respect to an imaginary line that connects a portion that is positioned furthest to the inside in diametrical direction of both slender sections 43 and 44 is G (mm), 0.00

摘要翻译： 在中间部分防止产生应力腐蚀开裂。 火花塞1包括沿轴线CL1方向延伸的绝缘体2和金属壳3.金属壳3包括位于套环部分16和工具接合部分19之间的中间部分41.中间部分41具有 在直径方向上朝向内侧和外侧凸出的凸起部分42，在比沿凸出部分42更靠近轴线CL1方向的后端侧的部分处最细长的第一细长部分43 以及第二细长部分44，其在沿着CL1方向的前端侧比凸出部分42更远的部分处最细长，并且凸出部分42具有朝向最内侧凸出的最隆起部分42M 的直径方向。 在包括轴线CL1的横截面中，当沿着轴线CL1的两个细长部分43和44之间的距离为F（mm）时，并且最大凸起部分42M的直径方向内侧的凸出量相对于 连接两个细长部分43和44在径向方向上最远位置的部分的假想线是G（mm），0.00

公开(公告)号：US20110298353A1

公开(公告)日：2011-12-08

申请号：US13138392

申请日：2010-02-03

申请人： Mai Nakamura ,  Akira Suzuki

发明人： Mai Nakamura ,  Akira Suzuki

IPC分类号： H01T13/36

CPC分类号： H01T13/36

摘要： A spark plug comprised of an insulator having a stepped portion on an outer circumferential portion thereof, the stepped portion tapering frontward in the direction of the axis of the spark plug, an annular sheet packing and a metallic shell having a taper portion provided on an inner circumferential portion thereof and tapering frontward in the direction of the axis of the spark plug, the metallic shell holding the insulator through a rear end portion thereof being crimped, the stepped portion being seated on the taper portion via the sheet packing, and the taper portion having a groove therein.

摘要翻译： 1.一种火花塞，其特征在于，具有在外周部具有阶梯部的绝缘体，所述台阶部沿所述火花塞的轴线方向向前渐缩，环状片状密封和金属壳，所述锥形部设置在内侧 其周向部分沿着火花塞的轴线方向向前逐渐变细，通过其后端保持绝缘体的金属壳被压接，台阶部分通过片状填料安置在锥形部分上，锥形部分 在其中具有凹槽。

公开(公告)号：US20110181168A1

公开(公告)日：2011-07-28

申请号：US13120173

申请日：2009-09-18

申请人： Mai Nakamura ,  Akira Suzuki

发明人： Mai Nakamura ,  Akira Suzuki

IPC分类号： H01T13/36

CPC分类号： H01T13/20 ,  H01T13/36

摘要： A spark plug is provided which can ensure gastightness between a metal shell and an insulator while preventing the cracking of the insulator. There is provided a spark plug in which a ledge portion 30 is formed on the metal shell 11 whose inside diameter is reduced gradually towards a front end portion, a step portion 32 is formed on an insulator 12 whose outside diameter is reduced gradually towards the front end portion and which confronts the ledge portion 30, and packing 34 is disposed between the ledge portion 30 and the step portion 32, characterized in that a distance between the ledge portion 30 and the step portion 32 gets narrower as the ledge portion 30 and the step portion 32 extend radially inwards, and in that an angle θ formed by the ledge portion 30 and the step portion 32 is one degree or larger and 10 degrees or smaller.

摘要翻译： 提供一种火花塞，其可以确保金属壳和绝缘体之间的气密性，同时防止绝缘体的开裂。 提供了一种火花塞，其中在金属外壳11上形成有一个凸缘部分30，其内径逐渐朝前端部分逐渐减小，台阶部分32形成在绝缘体12上，该绝缘体12的外径朝向前方逐渐减小 顶部30与台阶部分30相对，并且垫片34设置在凸缘部分30和台阶部分32之间，其特征在于，凸缘部分30和台阶部分32之间的距离变窄，因为凸缘部分30和 台阶部分32径向向内延伸，并且角度和角度; 由凸缘部30和台阶部32形成为一度以上且10度以下。

公开(公告)号：US08492964B2

公开(公告)日：2013-07-23

申请号：US13158094

申请日：2011-06-10

申请人： Mai Nakamura ,  Akira Suzuki

发明人： Mai Nakamura ,  Akira Suzuki

IPC分类号： H01T13/20 ,  H01T13/00

CPC分类号： H01T13/06 ,  H01T21/02

摘要： A spark plug including a center electrode; an insulator; and a metal shell, the metal shell including: a tool engaging section; a body section; and a groove section formed between the tool engaging section and the body section, and having bulges which bulge in an outer peripheral direction and in an inner peripheral direction. When a portion of the groove section having a largest outer diameter is a first section, a thinnest portion from the first section to the body section is a second section, and a portion having a thickness that is the same as that of the first section is a third section, a relation between a thickness A of the second section and a radius of curvature R of an outer surface of the metal shell that continues from the second section to the third section satisfies R×A≧0.20 mm2.

摘要翻译： 一种包括中心电极的火花塞; 绝缘体 和金属壳，所述金属壳包括：工具接合部; 身体部位 以及形成在工具接合部和主体部之间的槽部，并且具有在外周方向和内周方向上凸出的凸出部。 当具有最大外径的槽部的一部分是第一部分时，从第一部分到主体部分的最薄部分是第二部分，并且具有与第一部分相同的厚度的部分是 第三部分，第二部分的厚度A和从第二部分延续到第三部分的金属壳体的外表面的曲率半径R之间的关系满足R×A> = 0.20mm2。

公开(公告)号：US07923910B2

公开(公告)日：2011-04-12

申请号：US12631301

申请日：2009-12-04

申请人： Mai Nakamura ,  Akira Suzuki

发明人： Mai Nakamura ,  Akira Suzuki

IPC分类号： H01T13/00 ,  H01T13/02

CPC分类号： H01T13/20 ,  H01T13/36

摘要： A spark plug including an insulator and a metallic shell having an outer surface and an inner surface. The outer surface has a taper portion which comes into contact with a peripheral region around a mounting hole of an internal combustion engine, a tool engagement portion, and a trunk portion formed between the tool engagement portion and the taper portion. The inner surface has an annular step portion projecting toward the insulator and an internal trunk portion extending from the base of the step portion toward the rear end of the metallic shell. When the insulator and the metallic shell are fixed to each other by one of either cold and hot crimping, the projected area of the taper portion is at least two times or at least 1.5 times that of the step portion, respectively.

摘要翻译： 一种火花塞，其包括具有外表面和内表面的绝缘体和金属壳。 外表面具有锥形部，该锥形部与围绕内燃机的安装孔，工具接合部和形成在工具接合部和锥形部之间的主体部分的周边区域接触。 内表面具有朝向绝缘体突出的环状台阶部分和从台阶部分的底部朝向金属壳体的后端延伸的内部主干部分。 当绝缘体和金属壳体通过冷和热压接之一彼此固定时，锥形部分的投影面积分别是台阶部分的至少两倍或至少1.5倍。

公开(公告)号：US20100141110A1

公开(公告)日：2010-06-10

申请号：US12631301

申请日：2009-12-04

申请人： Mai NAKAMURA ,  Akira Suzuki

发明人： Mai NAKAMURA ,  Akira Suzuki

IPC分类号： H01T13/20

CPC分类号： H01T13/20 ,  H01T13/36

摘要： A spark plug including an insulator and a metallic shell having an outer surface and an inner surface. The outer surface has a taper portion which comes into contact with a peripheral region around a mounting hole of an internal combustion engine, a tool engagement portion, and a trunk portion formed between the tool engagement portion and the taper portion. The inner surface has an annular step portion projecting toward the insulator and an internal trunk portion extending from the base of the step portion toward the rear end of the metallic shell. When the insulator and the metallic shell are fixed to each other by one of either cold and hot crimping, the projected area of the taper portion is at least two times or at least 1.5 times that of the step portion, respectively.

摘要翻译： 一种火花塞，其包括具有外表面和内表面的绝缘体和金属壳。 外表面具有锥形部，该锥形部与围绕内燃机的安装孔，工具接合部以及形成在工具接合部和锥形部之间的主体部分的周边区域接触。 内表面具有朝向绝缘体突出的环状台阶部分和从台阶部分的底部朝向金属壳体的后端延伸的内部主干部分。 当绝缘体和金属壳体通过冷和热压接之一彼此固定时，锥形部分的投影面积分别是台阶部分的至少两倍或至少1.5倍。

公开(公告)号：US08294347B2

公开(公告)日：2012-10-23

申请号：US13120173

申请日：2009-09-18

申请人： Mai Nakamura ,  Akira Suzuki

发明人： Mai Nakamura ,  Akira Suzuki

IPC分类号： H01T13/36 ,  H01T13/02

CPC分类号： H01T13/20 ,  H01T13/36

摘要： A spark plug is provided which can ensure gastightness between a metal shell and an insulator while preventing the cracking of the insulator. There is provided a spark plug in which a ledge portion 30 is formed on the metal shell 11 whose inside diameter is reduced gradually towards a front end portion, a step portion 32 is formed on an insulator 12 whose outside diameter is reduced gradually towards the front end portion and which confronts the ledge portion 30, and packing 34 is disposed between the ledge portion 30 and the step portion 32, characterized in that a distance between the ledge portion 30 and the step portion 32 gets narrower as the ledge portion 30 and the step portion 32 extend radially inwards, and in that an angle θ formed by the ledge portion 30 and the step portion 32 is one degree or larger and 10 degrees or smaller.

摘要翻译： 提供一种火花塞，其可以确保金属壳和绝缘体之间的气密性，同时防止绝缘体的开裂。 提供了一种火花塞，其中在金属外壳11上形成有一个凸缘部分30，其内径逐渐朝前端部分逐渐减小，台阶部分32形成在绝缘体12上，该绝缘体12的外径朝向前方逐渐减小 顶部30与台阶部分30相对，并且垫片34设置在凸缘部分30和台阶部分32之间，其特征在于，凸缘部分30和台阶部分32之间的距离变窄，因为凸缘部分30和 台阶部分32径向向内延伸，并且角度和角度; 由凸缘部30和台阶部32形成为一度以上且10度以下。

公开(公告)号：US08033880B2

公开(公告)日：2011-10-11

申请号：US12702642

申请日：2010-02-09

申请人： Akira Suzuki ,  Mai Nakamura ,  Mamoru Musasa

发明人： Akira Suzuki ,  Mai Nakamura ,  Mamoru Musasa

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： 一种用于制造火花塞的方法，包括：（a）制备金属壳; （b）制备绝缘体; （c）将绝缘体插入金属壳的插入孔中; （d）将金属壳的预期压接部分形成到压接部分中; 和（e）将金属壳体的下侧部分压靠在比预期的压缩变形部分更靠近的位置处，并且沿轴向按压金属壳体的压接部分以使金属壳体的预期压缩变形部分压缩变形 并且因此密封金属壳的阶梯部分和绝缘体的阶梯部分之间的空间，其中步骤（e）控制从压缩变形开始到其结束的恒定值的冲压量。

公开(公告)号：US08536771B2

公开(公告)日：2013-09-17

申请号：US13138392

申请日：2010-02-03

申请人： Mai Nakamura ,  Akira Suzuki

发明人： Mai Nakamura ,  Akira Suzuki

IPC分类号： H01T13/36

CPC分类号： H01T13/36

摘要： A spark plug comprised of an insulator having a stepped portion on an outer circumferential portion thereof, the stepped portion tapering frontward in the direction of the axis of the spark plug, an annular sheet packing and a metallic shell having a taper portion provided on an inner circumferential portion thereof and tapering frontward in the direction of the axis of the spark plug, the metallic shell holding the insulator through a rear end portion thereof being crimped, the stepped portion being seated on the taper portion via the sheet packing, and the taper portion having a groove therein.

摘要翻译： 1.一种火花塞，其特征在于，具有在外周部具有阶梯部的绝缘体，所述台阶部沿所述火花塞的轴线方向向前渐缩，环状片状密封和金属壳，所述锥形部设置在内侧 其周向部分沿着火花塞的轴线方向向前逐渐变细，通过其后端保持绝缘体的金属壳被压接，台阶部分通过片状填料安置在锥形部分上，锥形部分 在其中具有凹槽。