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1. 发明专利

JP2013179100A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2013179100A
公开(公告)日：2013-09-09
申请号：JP2013136141
申请日：2013-06-28
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 , H01T13/38 , H01T13/39 , H01T21/02
摘要： PROBLEM TO BE SOLVED: To provide technology for miniaturizing a spark plug while securing strength of a groove part in its main metal fittings.SOLUTION: In main metal fittings 30 of a spark plug 100, relation between a section modulus Z1 in a first groove end 353 of a groove part 35, and a section modulus Z2 in a second groove end 357 of the groove 35 satisfies Z1≤Z2.
摘要翻译：要解决的问题：提供在确保其主金属接头中的槽部的强度的同时确保火花塞小型化的技术。解决方案：在火花塞100的主金属配件30中，第一槽端部中的截面模数Z1 槽部35的353，槽35的第二槽端部357的截面模数Z2满足Z1≤Z2。

2. 发明专利

JP2013149623A Spark plug 审中-公开
标题翻译： SPARK插头
公开(公告)号：JP2013149623A
公开(公告)日：2013-08-01
申请号：JP2013047688
申请日：2013-03-11
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
摘要： PROBLEM TO BE SOLVED: To provide a technique capable of securing airtightness and suppressing a gasket from being loosened.SOLUTION: A spark plug includes cylindrical main-body metal fittings extending in an axial direction and an annular gasket provided to an outer periphery of the main-body metal fittings. The gasket is solid and made principally of copper, and contains nickel by 0.1 wt.% or more. The gasket has a maximum thickness of 0.4 mm or larger and a Vickers hardness of 30 to 150 HV.
摘要翻译：要解决的问题：提供一种能够确保气密性和抑制垫圈松动的技术。解决方案：火花塞包括沿轴向延伸的圆柱形主体金属配件和设置在主体的外周的环形垫圈 - 金属配件。垫片是固体，主要由铜制成，并含有0.1重量％以上的镍。垫片的最大厚度为0.4mm以上，维氏硬度为30〜150HV。

3. 发明专利

JP2012099403A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2012099403A
公开(公告)日：2012-05-24
申请号：JP2010247603
申请日：2010-11-04
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： NAGASAWA SATOSHI , SUZUKI AKIRA
IPC分类号： H01T13/20 , H01T13/32
CPC分类号： H01T13/16 , H01T13/32
摘要： PROBLEM TO BE SOLVED: To suitably secure joint strength between a ground electrode and a main metal fitting in a spark plug in which the ground electrode having a multilayered structure is resistance-welded to the main metal fitting.SOLUTION: A spark plug includes: a main electrode; an insulator; a main metal fitting; and a ground electrode which is welded to the main metal fitting at a base end portion. The ground electrode includes: a surface layer; and a core material being formed inside the surface layer and having heat conductivity higher than that of the surface layer. The thickness of the surface layer at a specific position is 0.2 mm or more and 0.4 mm or less, the specific position being placed 1 mm away from the base end portion in a direction toward a tip end side along an outer periphery of the ground electrode. The condition of W1≥W2×1.55-(W3+0.25) is satisfied, where W1 (mm) represents the width of the main metal fitting in a specific direction; W2 (mm) represents the thickness of the ground electrode in the specific direction at the specific position; and W3 (mm) represents the thickness of the surface layer in the specific direction. The specific direction is passing through the center axis of the ground electrode and perpendicular to the axial direction on a welding face of the main metal fitting and the base end portion.
摘要翻译：要解决的问题：为了适当地确保接地电极和火花塞中的主金属配件之间的接合强度，其中具有多层结构的接地电极被电阻焊接到主金属配件。火花塞包括：主电极; 绝缘体主要金属配件; 以及在基端部焊接到主金属配件的接地电极。接地电极包括：表面层; 并且在表面层内部形成芯材，并且具有高于表层的导热性。特定位置的表面层的厚度为0.2mm以上且0.4mm以下，特定位置沿着接地电极的外周沿着朝向前端侧的方向离开基端部1mm 。满足W1≥W2×1.55-（W3 + 0.25）的条件，其中W1（mm）表示主金属配件在特定方向上的宽度; W2（mm）表示接地电极在特定位置处的特定方向的厚度; W3（mm）表示特定方向的表面层的厚度。特定方向通过主金属配件和基端部的焊接面上的接地电极的中心轴线并且垂直于轴向。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2012018913A Spark plug and manufacturing method thereof 有权
标题翻译： SPARK插头及其制造方法
公开(公告)号：JP2012018913A
公开(公告)日：2012-01-26
申请号：JP2011093977
申请日：2011-04-20
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： NAKAMURA MAI , SUZUKI AKIRA
IPC分类号： H01T13/36 , H01T21/02
CPC分类号： H01T13/06 , H01T21/02
摘要： PROBLEM TO BE SOLVED: To provide a spark plug in which breaking strength of a main metal fitting is improved.SOLUTION: In a main metal fitting 30 of a spark plug 100, a relation of R×A≥0.20 mmis satisfied, where A is a thickness of an inflection part 353 in a radial direction and R is a curvature radius of an outer surface of the main metal fitting 30 extending from the inflection part 353 to a uniform thickness part 348.
摘要翻译：要解决的问题：提供一种提高主金属配件的断裂强度的火花塞。
解决方案：在火花塞100的主金属配件30中，满足R×A≥0.20mm 2 的关系，其中A是拐点的厚度部分353在径向方向上，R是从弯曲部分353延伸到均匀厚度部分348的主金属配件30的外表面的曲率半径。（C）2012，JPO＆INPIT

5. 发明专利

JP2011100575A Method of manufacturing central electrode for spark plug, and method of manufacturing spark plug 有权
标题翻译：火花塞制造中心电极的制造方法及制作火花塞的方法
公开(公告)号：JP2011100575A
公开(公告)日：2011-05-19
申请号：JP2009253181
申请日：2009-11-04
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： NAKANO YUICHI , SUZUKI AKIRA , NAKAMURA MAI , YUMINO JIRO , MUSASA MAMORU
IPC分类号： H01T13/20 , C22C19/05 , H01T13/39 , H01T21/02
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method which can improve weldability of a nobel metal chip welded at a tip of a central electrode for a spark plug. SOLUTION: The central electrode 5 includes a core 5A, a body 5B and an intermediate part 5C, wherein a nobel metal chip 31 is welded at a tip of the intermediate part 5C. In manufacturing the central electrode 5, after integrating a core precursor 5A', a body precursor 5B' and an intermediate part precursor 5C' as precursors of the central electrode 5 by plastic working, the nobel metal chip 31 is welded at a tip of the intermediate precursor 5C'. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种可以提高焊接在用于火花塞的中心电极的尖端处的诺贝尔金属芯片的焊接性的制造方法。解决方案：中心电极5包括芯5A，主体5B和中间部分5C，其中在中间部分5C的尖端处焊接有诺贝尔金属芯片31。在制造中心电极5时，通过塑性加工将核心前体5A'，体前体5B'和作为中心电极5的前体的中间部分前体5C'整合在一起，将诺贝尔金属片31焊接在中间体前体5C'。版权所有（C）2011，JPO＆INPIT

6. 发明专利

JP2009176525A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2009176525A
公开(公告)日：2009-08-06
申请号：JP2008012815
申请日：2008-01-23
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 , MORIBE MAI , NAKANO YUICHI , MUSASA MAMORU
IPC分类号： H01T13/36 , H01T13/20 , H01T13/34
摘要： PROBLEM TO BE SOLVED: To provide a spark plug in which anti-fouling property is improved by utilizing a cleaning effect by corona discharge. SOLUTION: When a distance between the outer side end part 68 of diameter direction in a fittings face 61 facing toward the rear end and a first edge angle part region 65 is L, the distance X between a ring-shaped packing 8 and the first edge corner part region 65 of the rear end side in a fittings reduced diameter part 60 of the body fittings 50 is arranged to be 0.05 L or more and 0.3 L or less. By this, since the angle of the first edge corner part region 65 becomes exposed without being covered by the packing 8, electric field intensity in the vicinity of the first edge corner part region 65 becomes intensified so that the corona discharge occurs. Since the carbon adhered to the surface of the insulating insulator 10 is cleaned by this corona discharge, the anti-fouling property of the spark plug is improved. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供通过利用电晕放电的清洁效果来提高防污性能的火花塞。解决方案：当面向后端的配件面61中的外径端部68的外侧端部68与第一边缘角部区域65之间的距离为L时，环形密封件8与主体配件50的配件缩径部60中的后端侧的第一边缘角部区域65被配置为0.05L以上且0.3L以下。由此，由于第一边缘角部区域65的角度暴露而不被封装8覆盖，所以第一边缘角部区域65附近的电场强度变强，发生电晕放电。由于通过该电晕放电来清洁粘附到绝缘绝缘体10的表面的碳，所以提高了火花塞的防污性。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2007258142A Spark plug 有权
标题翻译： SPARK插头
公开(公告)号：JP2007258142A
公开(公告)日：2007-10-04
申请号：JP2006187505
申请日：2006-07-07
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： MORIBE MAI , SUZUKI AKIRA
IPC分类号： H01T13/36
CPC分类号： H01T21/02 , H01T13/36 , Y10T29/49231
摘要： PROBLEM TO BE SOLVED: To provide a spark plug capable of suppressing occurrence of trouble such as breakage, coming-off or the like of an insulating insulator by regulating the positional relationship between a caulking cover and a shoulder part of the insulating insulator. SOLUTION: This spark plug provides a small diameter by reducing the clearance between a main fitting and the insulating insulator, wherein a diameter difference between the outside diameter of an intermediate body part of the insulating insulator and the outside diameter of a rear end-side body part thereof is not greater than 1.8 mm, and is structured such that an inner end point T in of the caulking cover 60 of the main fitting 50 abutting on the shoulder part 321 of the insulating insulator 30 is separated from the insulating insulator 30. A ratio of an abutting part 602 to a non-abutting part 603, and an angle formed by a space are restricted. The small-sized and small-diameter spark plug excelling in airtightness can be provided by minimizing possibility of breaking the insulating insulator by providing such a structure. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种能够通过调节绝缘绝缘体的铆接盖和胎肩部之间的位置关系而能够抑制绝缘绝缘体的断裂，脱落等问题的发生的火花塞。解决方案：该火花塞通过减小主配件和绝缘绝缘子之间的间隙而提供小直径，其中绝缘绝缘体的中间体部分的外径与后端的外径之间的直径差其主体部分不大于1.8mm，并且构造成使得邻接在绝缘绝缘体的肩部321上的主配件50的铆接盖60的中的内端点T 30与绝缘绝缘体30分离。抵接部602与非抵接部603的比例以及空间形成的角度受到限制。可以通过提供这种结构来最小化破坏绝缘绝缘体的可能性来提供优异的气密性的小型和小直径火花塞。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2005158323A Method of manufacturing spark plug 有权
标题翻译：制造火花塞的方法
公开(公告)号：JP2005158323A
公开(公告)日：2005-06-16
申请号：JP2003392042
申请日：2003-11-21
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 , TORII KAZUYOSHI
IPC分类号： B23K11/00 , B23K26/00 , B23K26/20 , H01T13/20 , H01T13/32 , H01T13/39 , H01T21/02
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a spark plug capable of maintaining durability of a chip without impairing the bonding strength of the chip bonded to a ground electrode. SOLUTION: A precious metal chip 70 is to be bonded to the ground electrode 60 of the spark plug, with its opposing surface 71 opposed to a center electrode, to thereby form a spark discharge gap. The chip 70 is temporarily bonded to an inner surface 63 of the ground electrode 60 by resistance welding. Since a pressing force is applied to the chip 70 during the resistance welding, flange portions are formed by expansion of the outer diameter of the chip 70 near a bottom surface 72 (bottom part) thereof. Laser welding is then performed by irradiation with laser light all around the chip 70 at an irradiation angle θ that falls within a range of 5 to 80 degrees. Even if shrinkage occurs after the laser welding, thinning of the outer diameter of the chip 70 will hardly occur because the flange portions have expanded to be greater than the outer diameter, and therefore the bonding strength of the chip 70 to the ground electrode 60 is not impaired. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种制造能够保持芯片的耐久性的火花塞的方法，而不损害与接地电极接合的芯片的接合强度。解决方案：贵金属芯片70将被接合到火花塞的接地电极60，其相对表面71与中心电极相对，从而形成火花放电间隙。芯片70通过电阻焊接临时接合到接地电极60的内表面63。由于在电阻焊接期间对芯片70施加按压力，所以通过在底面72（底部）附近扩大芯片70的外径而形成凸缘部。然后通过以落在芯片70周围的激光照射在5至80度的范围内的照射角度θ进行激光焊接。即使在激光焊接后发生收缩，因为凸缘部分膨胀到大于外径，因此芯片70的外径的变薄也很少，因此芯片70与接地电极60的接合强度为没有受损版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2005158322A Method of manufacturing spark plug 有权
标题翻译：制造火花塞的方法
公开(公告)号：JP2005158322A
公开(公告)日：2005-06-16
申请号：JP2003392039
申请日：2003-11-21
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 , TORII KAZUYOSHI , TAIDO AKIKAZU
IPC分类号： H01T21/02 , H01T13/20
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a spark plug capable of suppressing weakening of the welding strength of a precious metal chip and an electrode that are bonded to each other by laser welding. SOLUTION: The precious metal chip 90 to be bonded to a center electrode 2 or a ground electrode of a spark plug to form a spark discharge gap is resistance-welded to the electrodes containing no precious metal, and is subjected to laser welding. In the precious metal chip 90 exposed to a severe environment associated with a spark discharge, separation between a molten portion 80 in which a portion of the chip 90 and a portion of the electrode are molten by laser welding and a non-molten portion 95 on the side of the chip 90 is likely to occur at an interface 83 between the portions 80 and 95. To cope with this, flange portions are formed at the bottom of the chip 90 by applying a pressing force to the chip 90 during resistance welding, and the laser irradiation is applied to the flange portions. The percentage of precious metal content in the molten portion 80 is thereby increased, and it is thus possible to prevent the separation at the interface 83. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种能够抑制通过激光焊接彼此接合的贵金属芯片和电极的焊接强度的弱化的火花塞的制造方法。解决方案：与不含贵金属的电极电阻焊接到中心电极2或火花塞的接地电极以形成火花放电间隙的贵金属芯片90进行激光焊接。在暴露于与火花放电相关的恶劣环境的贵金属芯片90中，通过激光焊接使芯片90的一部分和电极的一部分熔融的熔融部分80与未熔融部分95之间的分离芯片90的一侧很可能在部分80和95之间的界面83处发生。为了应对这一点，在电阻焊接期间通过向芯片90施加压力而在芯片90的底部形成凸缘部分，并且激光照射被施加到凸缘部分。因此，熔融部分80中的贵金属含量的百分比增加，因此可以防止在界面83处的分离。版权所有（C）2005，JPO＆NCIPI

10. 发明专利

JP2005123182A Manufacturing method of spark plug, and the spark plug 有权
标题翻译：火花插头的制造方法和火花插头
公开(公告)号：JP2005123182A
公开(公告)日：2005-05-12
申请号：JP2004279705
申请日：2004-09-27
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： SUZUKI AKIRA , MATSUTANI WATARU
IPC分类号： H01T13/20 , H01T13/32 , H01T21/02
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of a spark plug, by which the reliability of welding part can be improved in which a precious metal alloy, having a small diameter is laser welded from the inside face of a ground electrode in a protruded state.
SOLUTION: The discharge part 52, which forms a discharge gap 6 between the tip face 51 of a center electrode 3, is formed, after a tapered surface 4b, of which width becomes narrower toward the tip side so that the diameter becomes 0.8 mm or smaller and the height 0.5 mm or larger, is formed at the ground electrode 4, and by jointing it by laser welding on the inside face 4a of the ground electrode 4.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种火花塞的制造方法，通过该火花塞可以提高焊接部的可靠性，其中从接地电极的内侧激光焊接具有小直径的贵金属合金处于突出状态。解决方案：在中心电极3的前端面51之间形成放电间隙6的排出部52形成在锥形表面4b之后，其宽度朝向尖端侧变窄，使得直径变为在接地电极4上形成0.8mm以下，高度为0.5mm以上，通过激光焊接在接地电极4的内面4a上。（C）2005，JPO＆NCIPI

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