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1. 发明授权

US08674592B2 Spark plug having a crimp portion in the metal shell to firmly engage with the ceramic insulator 有权
标题翻译：火花塞具有在金属壳体中的压接部分以与陶瓷绝缘体牢固地接合
公开(公告)号：US08674592B2
公开(公告)日：2014-03-18
申请号：US13821150
申请日：2011-08-18
申请人： Mai Nakamura , Jiro Kyuno , Tomoaki Kato
发明人： Mai Nakamura , Jiro Kyuno , Tomoaki Kato
IPC分类号： H01T13/20
CPC分类号： H01T13/36
摘要： A spark plug includes a ceramic insulator having a tapered rear end stepped portion whose diameter decreases from front to rear and a metal shell having a crimp portion which crimps the rear end stepped portion from the rear end. An area defined by an outer edge of the rear end stepped portion and an inner edge of the crimp portion is 5-25 mm2 when the spark plug is projected on a plane perpendicular to an axial line. An angle formed by a tapered surface of the rear end stepped portion and a plane perpendicular to the axial line is 20-60 degrees. A distance along the axial line from a front end of a proximal portion of the crimp portion to a frontmost position of a contact portion between an inner surface of the crimp and the rear end stepped portion is 0.4-1.8 mm.
摘要翻译：火花塞包括陶瓷绝缘体，其具有从前到后直径减小的锥形后端阶梯部，以及具有从后端卷曲后端阶梯部的压接部的金属壳。当火花塞投影在与轴线垂直的平面上时，由后端台阶部分的外边缘和压接部分的内边缘限定的区域为5-25mm 2。由后端台阶部的锥形面和垂直于轴线的平面形成的角度为20-60度。从压接部的近端部的前端到压接部的内表面与后端台阶部之间的接触部的最前端的轴线的距离为0.4〜1.8mm。

2. 发明申请

US20130162135A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20130162135A1
公开(公告)日：2013-06-27
申请号：US13821150
申请日：2011-08-18
申请人： Mai Nakamura , Jiro Kyuno , Tomoaki Kato
发明人： Mai Nakamura , Jiro Kyuno , Tomoaki Kato
IPC分类号： H01T13/20
CPC分类号： H01T13/36
摘要： A spark plug includes a ceramic insulator having a tapered rear end stepped portion whose diameter decreases from front to rear and a metal shell having a crimp portion which crimps the rear end stepped portion from the rear end. An area defined by an outer edge of the rear end stepped portion and an inner edge of the crimp portion is 5-25 mm2 when the spark plug is projected on a plane perpendicular to an axial line. An angle formed by a tapered surface of the rear end stepped portion and a plane perpendicular to the axial line is 20-60 degrees. A distance along the axial line from a front end of a proximal portion of the crimp portion to a frontmost position of a contact portion between an inner surface of the crimp and the rear end stepped portion is 0.4-1.8 mm.
摘要翻译：火花塞包括陶瓷绝缘体，其具有从前到后直径减小的锥形后端阶梯部，以及具有从后端卷曲后端阶梯部的压接部的金属壳。当火花塞投影在与轴线垂直的平面上时，由后端台阶部分的外边缘和压接部分的内边缘限定的区域为5-25mm 2。由后端台阶部的锥形面和垂直于轴线的平面形成的角度为20-60度。从压接部的近端部的前端到压接部的内表面与后端台阶部之间的接触部的最前端的轴线的距离为0.4〜1.8mm。

3. 发明授权

US08536771B2 Surface for supporting a sheet packing in a spark plug 有权
标题翻译：用于支撑火花塞中的片材包装的表面
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。

4. 发明授权

US08492964B2 Spark plug and manufacturing method thereof 有权
标题翻译：火花塞及其制造方法
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。

5. 发明授权

US07923910B2 Spark plug having a metallic shell with defined relationship between its outer and inner surfaces 有权
标题翻译：火花塞具有在其外表面和内表面之间具有确定关系的金属壳
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。

6. 发明授权

US08519606B2 Spark plug for internal combustion engine and method of manufacturing spark plug 有权
标题翻译：用于内燃机的火花塞和制造火花塞的方法
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

7. 发明申请

US20120146484A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE AND METHOD OF MANUFACTURING SPARK PLUG 有权
标题翻译：用于内燃机的火花塞和制造火花塞的方法
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

8. 发明申请

US20110298353A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：火花塞用于内燃机
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。

9. 发明申请

US20110181168A1 SPARK PLUG 有权
标题翻译： SPARK插头
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。

10. 发明授权

US08294347B2 Spark plug having specific configuration of packing area 有权
标题翻译：火花塞具有特定的包装区域配置
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。

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