-
公开(公告)号：EP2950406B1
公开(公告)日：2017-07-12
申请号：EP15169602.8
申请日：2015-05-28
发明人： Takaoka, Katsuya , Kurosawa, Kazuhiro , Tanaka, Kuniharu , Yoshida, Haruki , Kurono, Hirokazu , Honda, Toshitaka
IPC分类号： H01T13/41
-
2.发明公开Spark plug for use in an internal-combustion engine and a method for manufacturing the same 有权一种火花塞，用于内燃发动机及其制造方法
公开(公告)号：EP1835579A3
公开(公告)日：2012-05-30
申请号：EP07251109.0
申请日：2007-03-15
摘要： The present invention provides a highly reliable spark plug used for an internal-combustion engine and including an insulator with a high withstand voltage, and a method for manufacturing the same. Namely, it provides a spark plug containing a cylindrical metal shell having an insulator holding hole, a cylindrical insulator including an axial hole therein which extends in an axial direction, and engaging with said insulator holding hole of said metal shell, and a center electrode held in said axial hole of said insulator, wherein said insulator has a texture in which one or more pores exposed in a judgment area with 50µm in diameter occupy 40% or less of said judgment area at any locations in an observation area, in the case where a predetermined mirror-finishing section of an enclosed portion surrounded by said metal shell is used as said observation area to observe pores exposed in said observation.
-
3.发明公开Insulating member for spark plug and method of manufacturing the same, and spark plug for internal combustion engine 有权绝缘构件用于火花塞，以及它们的制备方法，以及火花塞用于内燃发动机
公开(公告)号：EP2224560A2
公开(公告)日：2010-09-01
申请号：EP10154924.4
申请日：2010-02-26
发明人： Kuroni, Hirokazu , Honda, Toshitaka
摘要： A method of manufacturing an insulating member 2 for a spark plug, the insulating member 2 including an axial hole 4 extending in an axial direction, in which a center electrode 5 is held at a front end side of the axial hole and a terminal 6, e.g. a metal terminal, is held at a rear end side of the axial hole. The method includes: a pressurized forming step of compressing raw powder PM to form a molding CP1 having a hole portion HL, of which a rear end side is opened and a front end side is closed; a support pin inserting step of inserting a rod-shaped support pin 61 into the hole portion 112 from the rear end side of the molding; and a grinding step of grinding an outer circumferential surface of the molding CP1 inserted with the support pin 61 to form an unfired insulating member IP having a shape of the insulating member 2, wherein after the pressurized forming step and before the grinding step, a front end removing step of cutting a front end portion of the molding or grinding the front end portion in an axial direction to penetrate the hole portion is included.
摘要翻译： 制造绝缘部件2所述的火花塞的制造方法中，绝缘构件2包括在轴向孔4在其中中心电极5在轴向和终端6的前端侧保持轴向方向，孔延伸在， EC 的金属端子，是在轴孔的后端侧保持。 该方法包括：压缩原料粉末的PM的加压成形工序，形成具有孔部HL，其中的后端侧开口和前端侧闭合的成型CP1; 的支撑销插入插入棒状的支撑销61到从成型体的后端侧的孔部112的步骤; 和研磨，以插入与支撑销61的成型CP1的外周面的研磨步骤以形成在未烧成的绝缘构件IP具有加压形成步骤和研磨步骤之前，前后的形状的绝缘部件2的，worin 端移除切割成形的前端部或在轴向方向磨削前端部穿透孔部分的步骤是包括在内。
-
4.发明公开Spark plug for use in an internal-combustion engine and a method for manufacturing the same 有权Zündkerzefüreinen Verbrennungsmotor und Verfahren zu dessen Herstellung
公开(公告)号：EP1835579A2
公开(公告)日：2007-09-19
申请号：EP07251109.0
申请日：2007-03-15
摘要： The present invention provides a highly reliable spark plug used for an internal-combustion engine and including an insulator with a high withstand voltage, and a method for manufacturing the same. Namely, it provides a spark plug containing a cylindrical metal shell having an insulator holding hole, a cylindrical insulator including an axial hole therein which extends in an axial direction, and engaging with said insulator holding hole of said metal shell, and a center electrode held in said axial hole of said insulator, wherein said insulator has a texture in which one or more pores exposed in a judgment area with 50µm in diameter occupy 40% or less of said judgment area at any locations in an observation area, in the case where a predetermined mirror-finishing section of an enclosed portion surrounded by said metal shell is used as said observation area to observe pores exposed in said observation.
摘要翻译： 本发明提供一种用于内燃机并且具有高耐压的绝缘体的高可靠性火花塞及其制造方法。 也就是说，它提供了一种火花塞，它包括具有绝缘体保持孔的圆柱形金属壳，一个在轴向方向上延伸的轴向孔的圆柱形绝缘体，并与所述金属壳的所述绝缘体保持孔接合， 在所述绝缘体的所述轴向孔中，其中所述绝缘体具有如下结构：在观察区域的任何位置处，在直径为50μm的判断区域露出的一个或多个孔占据所述判断区域的40％以下的情况， 使用由所述金属壳包围的封闭部分的预定镜面精加工部作为所述观察区域，以观察在所述观察中暴露的孔。
-
公开(公告)号：EP1434326A3
公开(公告)日：2005-03-30
申请号：EP04008340.4
申请日：1999-01-28
发明人： Honda, Toshitaka , Tanaka, Yutaka
IPC分类号： H01T13/41
CPC分类号： H01T13/41
摘要： A spark plug 100 with a built-in resistor comprises an insulator 2 having an axially extending passing-through-hole 6, a terminal metal fitting 13 fixed within the passing-through-hole 6 at an end thereof, a center electrode 3 fixed within the same passing-through-hole at the other end thereof and a resistor 15 provided between the terminal metal fitting 13 and the center electrode 3 within the passing-through-hole 6. The resistor 15 comprises a mixture of a glass material portion with an electrically conductive material portion, said resistor 15 being directly in contact with at least one of said terminal metal fitting 13 and said center electrode 3, wherein said resistor composition comprises at least one auxiliary elemental component selected from the group consisting of Zn, Sb, Sn, Ag and Ni in a total amount of 0.02 to 2wt%.
-
公开(公告)号：EP1274157A1
公开(公告)日：2003-01-08
申请号：EP02254727.7
申请日：2002-07-05
发明人： Honda, Toshitaka
摘要： A spark plug 100 is configured such that an insulator 2 is formed of alumina ceramic, and the diameter of a through-hole 6 is not greater than 4 mm as measured at a position where conductive seal materials 16 and 17 are disposed. The coefficient of linear expansion of the conductive seal materials 16 and 17 is adjusted to not greater than 6.5×10 -6 /°C.
摘要翻译： 火花塞100构造成使得绝缘体2由氧化铝陶瓷形成，并且在设置有导电密封材料16和17的位置处测量的通孔6的直径不大于4mm。 导电密封材料16和17的线性膨胀系数被调节到不大于6.5×10 -6 /℃。
-
公开(公告)号：EP2854243A1
公开(公告)日：2015-04-01
申请号：EP14186862.0
申请日：2014-09-29
摘要： An ignition plug (1) includes an insulator (2) having an axial hole (4) extending therethrough in the direction of an axial line (CL1), a center electrode (5) inserted into a forward end portion of the axial hole (4), and a metallic shell (3) disposed externally of the insulator (2). The insulator (2) includes a step portion (14) engaged with an inner circumferential portion of the metallic shell (3) and a leg portion (13) extending forward from the forward end of the step portion (14). The porosity of the leg portion (13) is 3.0% or less. Of three regions of the leg portion (13) obtained by radially trisecting it in a cross section perpendicular to the axial line (CL1), the outermost region is defined as a first region (AR1) and the innermost region is defined as a second region (AR2). The porosity of the first region (AR1) is equal to or more than 1.20 times the porosity of the second region (AR2).
摘要翻译： 火花塞（1）包括具有沿轴线方向（CL1）延伸穿过其中的轴向孔（4）的绝缘体（2），插入轴向孔（4）的前端部分中的中心电极（5） ）以及布置在绝缘体（2）外部的金属壳（3）。 绝缘体2包括与金属壳3的内圆周部分接合的台阶部分14和从台阶部分14的前端向前延伸的腿部部分13。 腿部（13）的气孔率为3.0％以下。 在与轴线（CL1）垂直的截面中将其径向三等分的腿部（13）的三个区域中，最外侧的区域定义为第一区域（AR1），最内侧的区域定义为第二区域 （AR2）。 第一区域（AR1）的孔隙率等于或大于第二区域（AR2）的孔隙率的1.20倍。
-
公开(公告)号：EP2770511A1
公开(公告)日：2014-08-27
申请号：EP14155744.7
申请日：2014-02-19
IPC分类号： H01B3/12
CPC分类号： H01T13/38 , C04B35/111 , C04B35/6263 , C04B2235/3206 , C04B2235/3208 , C04B2235/3215 , C04B2235/3217 , C04B2235/3227 , C04B2235/3418 , C04B2235/5436 , C04B2235/5463 , C04B2235/77 , C04B2235/96 , H01B3/12
摘要： [Objective] To improve strength and dielectric strength performance of an insulator used in a spark plug
[Means for Solution] In an insulator used in a spark plug and comprising a sintered compact whose main constituent is alumina, in the sintered compact, a content ratio of a rare earth element (R. E.) and a group 2 element (2A) satisfies 0.1 ≤ R. E./2A ≤ 1.4, and the content ratio of the R. E. and barium oxide (BaO) satisfies 0.2 ≤ BaO/R. E. ≤ 0.8. At least one virtual rectangular frame of 7.5 µm × 50 µm surrounding crystals containing the rare earth element lies within a region of 630 µm × 480 µm in any cross section of the sintered compact. An occupancy rate of an area of the crystal containing the rare earth element to an area of the rectangular frame is greater than or equal to 5% and, in each of the divided regions when the rectangular frame is equally divided into three in a direction of a long side, a ratio of the maximum area occupancy rate and the minimum area occupancy rate of the area occupancy rates of the crystal containing the rare earth element is less than or equal to 5.5%.摘要翻译： [目的]提高火花塞中使用的绝缘体的强度和介电强度性能[解决方案的方案]在火花塞中使用的绝缘子中，主要成分为氧化铝的烧结体中，在烧结体中，含有比例 稀土元素（RE）和第2族元素（2A）均满足0.1‰RE / 2A‰1.4，RE和氧化钡（BaO）的含量比满足0.2‰BaO / R。 E.‰¤0.8。 包含稀土元素的围绕晶体的7.5μm×50μm的至少一个虚拟矩形框架位于烧结体的任何横截面中的630μm×480μm的区域内。 包含稀土元素的晶体的面积占矩形框的面积的占有率大于或等于5％，并且在每个分割区域中，当矩形框架在 长边，含有稀土元素的晶体的面积占有率的最大面积占有率和最小面积占有率的比例小于或等于5.5％。
-
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).
-
-
-
-
-
-
-
-
搜索结果
40 条记录 (耗时 0.015 秒)
