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11. 发明专利

JP2004087464A Spark plug for internal combustion engine 有权
公开(公告)号：JP2004087464A
公开(公告)日：2004-03-18
申请号：JP2003170687
申请日：2003-06-16
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： YUMINO JIRO , SUZUKI AKIRA , YAMAGUCHI MAKOTO
IPC分类号： H01T13/20 , H01T13/32 , H01T13/39
摘要： PROBLEM TO BE SOLVED: To provide a spark plug for an internal combustion engine that is effective for preventing a flying spark, generates normal spark discharge, and has a good ignition characteristic of air-fuel mixture.
SOLUTION: In the spark plug 100 for a internal combustion engine, the end diameter D of a main fitting 130 is less than 11.9 mm. Assuming that the shortest distance between the end face 121 of a central electrode 120 and a corner 112 of an outer electrode 110 at a central electrode side is G (mm), and the shortest distance between a virtual line L and the inner face 111 of an outer electrode 110 is A (mm), where the line L is created by crossing a virtual plane F including an end face 141 at the tip side of an insulator 140 with a virtual side face S that is the extension of the side face 142 of the insulator 140 to the tip side in the plane F, a relation of 0.5G ≤ A ≤ 1.5G is satisfied. The corner 112 is included in a virtual cylindrical area T that is the extension of a portion projected from the end face 141 of the insulator 140 to the tip side in the electrode 120. In the area T, a distance between the tip face 121 and the opposite face 112 of the outer electrode 110 decreases with approaching the tip side of the electrode 110.
COPYRIGHT: (C)2004,JPO

12. 发明专利

JP2011210699A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2011210699A
公开(公告)日：2011-10-20
申请号：JP2010282862
申请日：2010-12-20
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： YUMINO JIRO , MUSASA MAMORU , SUZUKI AKIRA
IPC分类号： H01T13/36
摘要： PROBLEM TO BE SOLVED: To prevent breakage of an insulator by improving strength of the insulator.SOLUTION: A spark plug is equipped with the insulator 2 and the main metal fitting 3. The insulator 2 has a large diameter part 11, a contracted diameter part 15, and the rear-end side trunk part 10, and the main metal fitting 3 has a tool engaging part 20, a caulking part 21, and a seat part 17. The caulking part 21 is locked to the large diameter part 11 via a ring member 24 and talc 26. In the spark plug in which the outer diameter of the rear-end trunk part 10 is 7.0 mm or more and 8.0 mm or less, opposite side size of the tool engaging part 20 is 12 mm or less, or the outer diameter of the rear-end side trunk part 10 is 9.0 mm or more and 10.5 mm or less. The distance from the seat part 17 along an axial line CL1 to the rear end of the insulator 2 is 42 mm or more and 54 mm or less, 1/2 of diameter difference between the outer diameter of the rear-end side trunk part 10 and the inner diameter of the ring member 24 is 0.15 mm or more, and the diameter of the ring member 24 in a cross-sectional face to include the axial line CL1 is 0.4 mm or more.
摘要翻译：要解决的问题：通过提高绝缘体的强度来防止绝缘体的破裂。解决方案：火花塞配备有绝缘体2和主金属配件3.绝缘体2具有大直径部分11，收缩直径部分 15，后端侧主体部10以及主金属配件3具有工具接合部20，铆接部21和座部17。铆接部21经由环状构件24和滑石26.在后端主体部10的外径为7.0mm以上且8.0mm以下的火花塞中，工具接合部20的相对侧尺寸为12mm以下，或者后端侧主体部10的外径为9.0mm以上且10.5mm以下。从座部17沿着轴线CL1到绝缘子2的后端的距离为42mm以上且54mm以下，后端侧主体部10的外径之间的直径差的1/2 并且环状构件24的内径为0.15mm以上，环状构件24在包含轴线CL1的截面中的直径为0.4mm以上。

13. 发明专利

JP2011181213A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2011181213A
公开(公告)日：2011-09-15
申请号：JP2010041755
申请日：2010-02-26
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： YUMINO JIRO , SUZUKI AKIRA
IPC分类号： H01T13/20 , H01T13/36
CPC分类号： H01T13/36 , H01T21/02
摘要： PROBLEM TO BE SOLVED: To provide a technology capable of downsizing a spark plug while securing the strength of a groove in a main metal fitting. SOLUTION: In the main metal fitting 30 of the spark plug 100, a section modulus Z1 at a first groove end 353 of the groove 35 and a section modulus Z2 at a second groove end 357 of the groove 35 satisfy a relation of: Z1≤Z2. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够在确保主金属配件中的槽的强度的同时小型化火花塞的技术。
解决方案：在火花塞100的主金属配件30中，槽35的第一槽端353处的截面模数Z1和槽35的第二槽端357处的截面模数Z2满足关系：Z1≤Z2。版权所有（C）2011，JPO＆INPIT

14. 发明专利

JP2010086951A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2010086951A
公开(公告)日：2010-04-15
申请号：JP2009194021
申请日：2009-08-25
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： BAN KENJI , YUMINO JIRO , SUZUKI AKIRA
IPC分类号： H01T13/32 , H01T13/39
CPC分类号： H01T13/32 , H01T13/16 , H01T13/39
摘要： PROBLEM TO BE SOLVED: To provide a spark plug in which rising of a ground electrode can be more reliably restrained.
SOLUTION: In the spark plug 100, a ground electrode 4 is configured to have a core part 41 extending from a base end part 4A toward a tip part 4C via a bent part 4B, a heat transfer part 42 extending from the base end part 4A toward the tip part 4C via the bent part 4B, and an outer layer 43 located externally of the core part 41 and the heat transfer part 42 and extending from the base end part 4A toward the tip part 4C via the bent part 4B. The outer layer 43 is formed of a nickel-based alloy, which serves as a first metal excellent in heat resistance and corrosion resistance. The heat transfer part 42 is formed of copper, which serves as a second metal higher in thermal conductivity than the first metal. The core part 41 is formed of pure nickel, which serves as a third metal higher in hardness than the second metal. The second metal is higher in a linear thermal expansion coefficient than the first and the 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 part 41 is positioned toward a center electrode 3 side from the center of the heat transfer part 42.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种可以更可靠地抑制接地电极的上升的火花塞。解决方案：在火花塞100中，接地电极4被配置为具有从基端部4A经由弯曲部4B延伸到顶端部4C的芯部41，从基部延伸的传热部42 端部4A经由弯曲部4B朝向前端部4C，外侧层43位于芯部41和传热部42的外侧，经由弯曲部4B从基端部4A朝向前端部4C延伸。外层43由耐热性和耐腐蚀性优异的作为第一金属的镍基合金形成。传热部分42由铜形成，其作为比第一金属更高的导热性的第二金属。芯部41由纯镍形成，其用作比第二金属硬度更高的第三金属。第二金属的线性热膨胀系数高于第一和第三金属。在接地电极4的与接地电极4所延伸的方向正交的截面上，至少在弯曲部4B相对于该方向的中间位置，芯部41的中心朝向从传热部分42的中心的中心电极3一侧。（C）2010，JPO＆INPIT

15. 发明专利

JP2010062160A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2010062160A
公开(公告)日：2010-03-18
申请号：JP2009280625
申请日：2009-12-10
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： SUZUKI AKIRA , KATO TOMOAKI , MUSASA MAMORU , YUMINO JIRO
IPC分类号： H01T13/20 , F02P13/00 , H01T13/39
CPC分类号： H01T13/14 , H01T13/34
摘要： PROBLEM TO BE SOLVED: To provide a spark plug capable of more quickly burning off carbon adhered to an insulator by quickly raising temperature of the insulator.
SOLUTION: In enhancing temperature-raising performance at a tip side of the insulator 10 in the spark plug, a protrusion volume H of the insulator 10, a tip-side volume Vc from a tip to a position 2 mm from the tip, a thermal resistance value Ra of a cross section of an assembly at a position 2 mm from the tip of the insulator are specified as follows. H≥1 mm, Vc≤17 mm
3 , Ra≥1.0×10
-3 (m K/W). Tip-end temperature of the insulator 10 can be quickly raised with this arrangement, so that carbon adhered to the tip-side of the insulator 10 can be quickly burnt out. Such an effect is especially valid for a small-diameter spark plug of which an outer diameter of a mounting screw 52 of main metal fittings 50 are ≤M10 in a nominal diameter.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种火花塞，其能够通过快速提高绝缘体的温度来更快地燃烧附着在绝缘体上的碳。解决方案：为了提高火花塞绝缘子10的前端侧的升温性能，绝缘体10的突出体积H，从前端至尖端2mm的位置的前端侧容积Vc 在距离绝缘体的前端2mm的位置处的组件的横截面的热阻值Ra被规定如下。 H≥1mm，Vc≤17mm 3 ，Ra≥1.0×10 -3 （m K / W）。可以通过这种布置快速地提高绝缘体10的顶端温度，从而能够快速地烧结附着在绝缘体10的前端侧的碳。这种效果对于主要金属配件50的安装螺钉52的外径以公称直径≤M10的小直径火花塞是特别有效的。版权所有（C）2010，JPO＆INPIT

16. 发明专利

JP2009245716A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2009245716A
公开(公告)日：2009-10-22
申请号：JP2008090118
申请日：2008-03-31
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： SUZUKI AKIRA , KATO TOMOAKI , SHIBATA TSUTOMU , MUSASA MAMORU
IPC分类号： H01T13/20
CPC分类号： H01T13/34
摘要： PROBLEM TO BE SOLVED: To provide a miniaturized spark plug excelling in vibration resisting performance and resistor load life characteristics by enhancing adhesiveness between a resistor and a conductive glass seal layer.
SOLUTION: A center electrode 13 and the resistor 18 arranged in a through-hole 16 of an insulator 12 are joined by the conductive glass seal layer 19 provided between them. The diameter D of the conductive glass seal layer 19 joined to the resistor 18 is 1.9-3.3 mm (1.9 mm≤D≤3.3 mm). A joint surface 23 of the conductive glass seal layer 19 joined to the resistor 18 is formed in bowl shape, and Sa/S1 obtained based on a surface area Sa of the joint surface 23 and a cross-sectional area S1 of the conductive glass seal layer 19 is 1.1 or more (Sa/S≥1.1).
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过提高电阻器和导电玻璃密封层之间的粘合性，提供优异的抗振性能和电阻器寿命特性的小型火花塞。解决方案：布置在绝缘体12的通孔16中的中心电极13和电阻器18由设置在它们之间的导电玻璃密封层19接合。接合到电阻器18的导电玻璃密封层19的直径D为1.9-3.3mm（1.9mm≤D≤3.3mm）。接合到电阻器18的导电玻璃密封层19的接合表面23形成为碗形，并且基于接合表面23的表面积Sa获得的Sa / S1和导电玻璃密封件的横截面积S1 层19为1.1以上（Sa /S≥1.1）。版权所有（C）2010，JPO＆INPIT

17. 发明专利

JP2009230946A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2009230946A
公开(公告)日：2009-10-08
申请号：JP2008072731
申请日：2008-03-21
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： SUZUKI AKIRA , KATO TOMOAKI
IPC分类号： H01T13/20
CPC分类号： H01T13/14
摘要： PROBLEM TO BE SOLVED: To provide a spark plug capable of quickly burning out a carbon stuck to an insulator.
SOLUTION: In order to improve temperature rise performance at the tip side of an insulator 10 of the spark plug, a projection amount H (mm) of the insulator 10, a tip side volume Vi (mm
3 ) of the insulator 10, and a tip side volume Vc (mm
3 ) of a central electrode 20 are each specified. Thus, recovery performance on carbon contamination is improved while voltage resistance of the insulator 10 and durability of the central electrode 20 are maintained. Since recovery performance on carbon contamination is improved, the occurrence of lateral spark leap to a main bracket 50 from the central electrode 20 through the insulator 10 is suppressed, thereby stably assuring normal ignition of a mixture gas.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供能够快速燃烧粘附到绝缘体上的碳的火花塞。解决方案：为了提高火花塞的绝缘子10的顶端的温度上升性能，绝缘体10的突出量H（mm），尖端侧体积Vi（mm 3 < SP>）和中心电极20的尖端侧容积Vc（mm 3 ）。因此，提高了碳污染的恢复性能，同时保持了绝缘体10的耐电压性和中心电极20的耐久性。由于碳污染的恢复性能得到改善，因此抑制了从中心电极20通过绝缘体10向主支架50发生横向火花的发生，从而稳定地确保混合气体的正常点燃。版权所有（C）2010，JPO＆INPIT

18. 发明专利

JP2013235856A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2013235856A
公开(公告)日：2013-11-21
申请号：JP2013162569
申请日：2013-08-05
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： SUZUKI AKIRA
IPC分类号： H01T13/20 , F02P13/00
CPC分类号： H01T13/20 , H01T13/32 , H01T21/02
摘要： PROBLEM TO BE SOLVED: To provide a spark plug which sufficiently achieves abrasion resistance improving effects due to providing a noble metal chip and effectively inhibits the peeling of the noble metal chip.SOLUTION: A noble metal chip 32 provided at a target portion of at least one of a center electrode 5 and a ground electrode 27 includes: a first fusing part 351 where one end surface side thereof is joined to the target portion through a fusing part 35, the fusing part 35 formed by a laser beam etc. being radiated to a border portion between one end surface of the noble metal chip 32 and the target portion along a circumferential direction of the noble metal chip 32; and a second fusing part 352 formed by a laser beam etc. being radiated from the side where the laser beam etc. is radiated when the first fusing part 351 is formed and intersecting with the first fusing part 351.
摘要翻译：要解决的问题：提供一种由于提供贵金属芯片而充分实现耐磨性改善效果的火花塞，并且有效地抑制了贵金属芯片的剥离。解决方案：设置在至少一个目标部分的贵金属芯片32 中心电极5和接地电极27中的一个包括：第一定影部351，其一个端面侧通过定影部35与目标部接合，由激光束等形成的定影部35照射到贵金属芯片32的一个端面与贵金属芯片32的圆周方向的目标部分之间的边界部分; 以及由激光束等形成的第二定影部分352，当第一定影部分351形成并且与第一定影部分351相交时，从激光束等被辐射的一侧辐射。

19. 发明专利

JP2013206789A Spark plug manufacturing method 有权
标题翻译： SPARK PLUG制造方法
公开(公告)号：JP2013206789A
公开(公告)日：2013-10-07
申请号：JP2012076069
申请日：2012-03-29
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： MORIYA KENJI , SUZUKI AKIRA
IPC分类号： H01T13/20 , H01T13/32
摘要： PROBLEM TO BE SOLVED: To drastically improve bondability of a chip to a ground electrode, set an application load in a wide range, and stably realize excellent bondability.SOLUTION: A spark plug 1 comprises a ground electrode 27, and a ground electrode side chip 32 jointed to the ground electrode 27. In a jointing step, the ground electrode side chip 32 is jointed to the ground electrode 27 by resistance welding. In the jointing step, electricity is conducted between a chip-side member 41 contacting the ground electrode side chip 32 while a load directed toward the ground electrode 27 is applied to the ground electrode side chip 32, and a ground electrode-side member 42 contacting the ground electrode 27 while a load is applied to the ground electrode 27, so as to joint the ground electrode side chip 32 to the ground electrode 27. In the jointing step, the load applied to the ground electrode side chip 32 from the chip-side member 41 is made smaller than the load applied to the ground electrode 27 from the ground electrode-side member 42.
摘要翻译：要解决的问题：为了大幅度提高芯片与接地电极的接合性，将施加载荷设定在宽范围内，稳定地实现优良的粘合性。火花塞1包括接地电极27和接地电极侧芯片 32接合到接地电极27.在接合步骤中，接地电极侧芯片32通过电阻焊接接合到接地电极27。在接合步骤中，在与接地电极侧芯片32接触的芯片侧部件41之间进行电力的同时向接地电极侧芯片32施加朝向接地电极27的负荷，接地电极侧部件42接触接地电极27，同时向接地电极27施加负载，以将接地电极侧芯片32接地到接地电极27.在接合步骤中，从芯片接地电极侧施加到接地电极侧芯片32的负载，使侧面构件41比从接地电极侧构件42施加到接地电极27的负载小。

20. 发明专利

JP2013020790A Spark plug 审中-公开
标题翻译： SPARK插头
公开(公告)号：JP2013020790A
公开(公告)日：2013-01-31
申请号：JP2011152782
申请日：2011-07-11
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： SUZUKI AKIRA
IPC分类号： H01T13/08 , F02P13/00
CPC分类号： F16J15/061 , F16J15/0881 , H01L2224/32245 , H01L2224/48091 , H01L2224/48227 , H01L2224/48247 , H01L2224/49107 , H01L2224/73265 , H01L2224/8592 , H01T13/08 , H01L2924/00014 , H01L2924/00
摘要： PROBLEM TO BE SOLVED: To provide a technique capable of securing airtightness and restraining looseness of a gasket.SOLUTION: A spark plug comprises a cylindrical main metal fitting extending in an axial line, and an annular gasket provided on an outer periphery of the main metal fitting. The gasket is solid, and contains copper as a main component, and 0.1 weight% or more of nickel. Maximum thickness of the gasket in the axial direction is 0.4 mm or more, and Vickers hardness of the gasket is 30 HV or more and 150 HV or less.

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