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公开(公告)号：EP1950856B1
公开(公告)日：2014-01-15
申请号：EP07738327.1
申请日：2007-03-12
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公开(公告)号：EP2683041A1
公开(公告)日：2014-01-08
申请号：EP12754851.9
申请日：2012-01-12
摘要： An object is to provide a spark plug manufacturing method capable of providing a spark plug equipped with an insulator having dielectric strength by means of judging whether or not the insulator has a defect. The spark plug manufacturing method of the present invention is characterized by including a defect judgment step of judging whether or not the insulator has a defect, by means of generation of an electric potential difference between the center electrode and the metallic shell under conditions such that an assembly of the center electrode, the metallic shell, and the insulator is disposed within a pressure vessel, a high-pressure atmosphere higher in pressure than the atmospheric pressure is established within the pressure vessel, a space which allows the presence of insulating oil is a space surrounded by the packing, the metallic shell, the insulator, and an imaginary plane containing a forward end surface of the metallic shell, and the insulating oil is present at least in a region of the space where the distance between the ledge and the insulator becomes shortest.
摘要翻译： 本发明的目的在于提供一种火花塞的制造方法，该火花塞的制造方法能够通过判断绝缘体是否存在缺陷来提供具备绝缘体强度的绝缘体的火花塞。 本发明的火花塞制造方法的特征在于，包括缺陷判断步骤，通过在中心电极和金属壳之间产生电势差的条件下判断绝缘体是否具有缺陷， 中心电极，主体配件和绝缘体的组装配置在压力容器内，在压力容器内形成高于大气压的高压气氛，因此存在绝缘油的空间为 由所述填充物，所述金属壳，所述绝缘体和包含所述金属壳的前端面的假想平面包围的空间，并且所述绝缘油至少存在于所述壁架和所述绝缘体之间的距离 变得最短。
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公开(公告)号：EP2482396A4
公开(公告)日：2013-12-25
申请号：EP10818513
申请日：2010-06-23
申请人： NGK SPARK PLUG CO
发明人： KURONO HIROKAZU , HONDA TOSHITAKA , TAKAOKA KATSUYA , TAKEUCHI HIROKI , TANAKA KUNIHARU , MITSUOKA TAKESHI
CPC分类号： H01T13/36 , C04B35/117 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3222 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3418 , C04B2235/5436 , C04B2235/5445 , C04B2235/604 , C04B2235/77 , C04B2235/963 , H01T13/38 , H01T21/02
摘要： To provide a small-sized spark plug equipped with stain resistance and withstand voltage characteristics for a long term, and a process for producing this spark plug. A spark plug 100 that is equipped with an insulator 2 that has a stem portion 30 on a front end side, a center electrode 3, and a main metal member 1 that retains the insulator 2 at an engaging projection portion 56, wherein an inner diameter D IN of the engaging projection portion 56, the maximum outer diameter d OUT of the stem portion 30, which faces an inner circumferential surface 59 of the engaging projection portion 56, its inner diameter dIN, and dielectric constant µ of the insulator 2 satisfy the following condition. A process for producing the spark plug 100 containing a step of producing the insulator 2 by pressing and then sintering a raw material powder containing Al compound powder, Si compound powder, a powder, of a compound of an element of group 2, of at least two kinds containing Mg compound powder and Ba compound powder, and 0.5-4.0 mass % of a rare-earth compound powder. Condition: "(D IN - d OUT )/2 ‰¤ 0.40 (mm)", "(d OUT - d IN )/2 ‰¤ 1.65 (mm)", and "µ ‰¥ 9.4 (F/m)".
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公开(公告)号：EP2096726B1
公开(公告)日：2013-12-25
申请号：EP09153987.4
申请日：2009-02-27
发明人： Honda, Toshitaka , Kurono, Hirokazu
摘要： A method for manufacturing an insulator includes: preparing a press pin (50) and a forming die (80) having a cavity (83), the press pin (50) including a pin-side spiral portion (54) formed on a first position; filling a raw powder (GP) into the cavity (80); arranging the press pin (50) within the cavity (83); pressing the raw powder (GP) within the cavity (83) along with the press pin (50), and obtaining a green body (PC1) formed with a green body-side spiral portion; releasing the green body (PC1) along with the press pin (50) from the cavity (83); retreating the press pin (50) with respect to the green body (PC1) while rotating the press pin (50) relative to the green body (PC1) around an axis, and extracting the press pin (50) from the green body (PC1) ; and removing an unnecessary portion from the green body (PC1). The first position is positioned such that the green body-side spiral portion is located in the unnecessary portion of the green body (PC1).
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公开(公告)号：EP2667465A1
公开(公告)日：2013-11-27
申请号：EP12736871.0
申请日：2012-01-20
发明人： TANAKA, Tomoyuki , OKAZAKI, Kouji
摘要： A method of manufacturing a spark plug includes a joining step of joining a first member and a second member which constitute the spark plug. In the joining step, a first welding electrode in contact with the first member and a second welding electrode which has an elastically deformable intermediate portion and which is in contact with the second member are electrically connected through the first member and the second member, whereby the first member and the second member are joined together by resistance welding.
摘要翻译： 制造火花塞的方法包括连接构成火花塞的第一构件和第二构件的连接步骤。 在接合工序中，与第一部件接触的第一焊接电极和具有可弹性变形的中间部并与第二部件接触的第二焊接电极通过第一部件和第二部件电连接， 第一部件和第二部件通过电阻焊接结合在一起。
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67.发明公开IGNITION DEVICE HAVING AN INDUCTION WELDED AND LASER WELD REINFORCED FIRING TIP AND METHOD OF CONSTRUCTION 有权ZNDNDINIICITIC MIT EINER INDUKTIONSGESCHWEISSTEN UND LASERGESCHWEISSTENVERSTÄRKTENZÜNDSPITZEUND KONSTRUKTIONSVERFAHREN
公开(公告)号：EP2193582A4
公开(公告)日：2013-11-27
申请号：EP08834621
申请日：2008-09-23
发明人： KOWALSKI KEVIN JAY , TINWELL PAUL
摘要： An ignition device for an internal combustion engine and method of construction therefore includes a housing with an insulator secured therein. A center electrode is mounted within the insulator. A ground electrode extends from the housing with a portion of the ground electrode defining a spark gap across from the center electrode. The center electrode has a firing tip, wherein a resistance weld joint initially bonds the firing tip to the center electrode and a continuous bead of overlapping first weld pools formed substantially from the material of the firing tip further bonds the firing tip to the electrode. A continuous bead of overlapping second weld pools formed radially outwardly from the first weld pools forms a rounded shoulder surface extending from the first weld pools to an outer surface of the center electrode.
摘要翻译： 因此，用于内燃机的点火装置和结构的方法包括其中固定有绝缘体的壳体。 中心电极安装在绝缘体内。 接地电极从外壳延伸，接地电极的一部分在中心电极上形成火花隙。 中心电极具有点火尖端，其中电阻焊接接头首先将烧制尖端结合到中心电极，并且基本上由烧制尖端材料形成的重叠的第一焊接池的连续焊道进一步将烧制尖端结合到电极。 从第一焊接池径向向外形成的重叠的第二焊池的连续焊道形成从第一焊池延伸到中心电极的外表面的圆形的肩部表面。
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公开(公告)号：EP2472683A3
公开(公告)日：2013-10-30
申请号：EP11194863.4
申请日：2011-12-21
摘要： A device for diverting energy away from an electrical arc flash is provided. The device comprises an arc source configured to create a second arc flash, a plasma gun configured to inject plasma in proximity of the arc source in response to the arc flash, an arc containment device to house the arc source and the plasma gun, an exhaust port configured to route exhaust gases out of the device in a first direction, and an exhaust duct coupled in flow communication with the exhaust port, the exhaust duct comprising a substantially hollow tube including a first tube portion and a second tube portion, the first tube portion coupled in flow communication with the exhaust port, the second tube portion defining an exhaust vent and coupled in flow communication with the first tube portion to route the exhaust gases out of the device in a second direction.
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69.发明公开
公开(公告)号：EP2652846A2
公开(公告)日：2013-10-23
申请号：EP11873786.5
申请日：2011-12-15
CPC分类号： H01T13/50 , F02P23/04 , H01F27/321 , H01F27/327 , H01F38/12 , H01F2038/122 , H01F2038/125 , H01T21/02
摘要： A corona igniter (20) includes an ignition coil (26) providing a high voltage energy to an electrode. The coil (26) is disposed in a housing (34) and electrically isolated by a coil filler (36) and a capacitance reducing component (38) which together improve energy efficiency of the system. The coil filler (36) includes an insulating resin permeating the coil (26). The capacitance reducing component (38) has a permittivity not greater than 6, for example ambient air, pressurized gas, insulating oil, or a low permittivity solid. The capacitance reducing compound (38) surrounds the coil (26) and other components and fills the remaining housing volume. The coil filler (36) has a filler volume and the capacitance reducing component (38) has a component volume greater than the filler volume.
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70.发明公开METHOD OF MANUFACTURING ELECTRODE COMPLEX FOR FORMING ELECTRODE OF SPARK-PLUG, AND METHOD OF MANUFACTURING SPARK PLUG 有权方法作为电极的制造复杂，形成了火花电极和方法产生火花
公开(公告)号：EP2621034A1
公开(公告)日：2013-07-31
申请号：EP11826826.7
申请日：2011-09-20
发明人： ICHIHARA Hiroshi , EMOTO Ryuji
摘要： [Objective] To efficiently weld a second tip, which is a noble metal tip, to a first tip with high accuracy.
[Means for Solution] A manufacturing apparatus has a plurality of chuck units (110), each including a chuck (81) for holding a first tip (11), a chuck position adjustment means (90) capable of adjusting the position of a reference center axis (C1) of the chuck (81), and a base (120) which supports the chuck position adjustment means (90). Each of the bases (120) has a shaft (92) coaxial with the reference center axis (C1) of the chuck (81). The bases (120) are rotatably disposed at equal intervals on an imaginary circle of a rotary circular table (101) via the respective shafts (92). The chuck (81) is caused to hold the first tip (11); the position of an actual center axis (C2) of the first tip (11) is measured by image processing, thereby detecting an eccentric error relative to the shaft (92); the chuck position adjustment means (90) is driven for correcting the position of the center axis (C2) of the first tip (11) so as to align the position of the center axis (C2) with the position of the shaft (92), and then a second tip is disposed; and while the chuck unit (110) is rotated about the shaft (92), the outer circumferential edges of the joining end surfaces of the first and second tips are laser-welded.
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