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公开(公告)号：US20150214697A1
公开(公告)日：2015-07-30
申请号：US14419590
申请日：2013-03-20
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Haruki Yoshida , Takamitsu Mizuno , Satoshi Yano
Abstract: A spark plug having a resistor containing SiO2 and B2O3. The glass is a phase-separated glass having aggregate phase and an intervening phase. In a cross section of the resistor, when a plurality of imaginary lines perpendicular to an axial line CL1 are drawn at intervals of 0.1 mm in the direction of the axial line CL1, the number of aggregate phase located on each of the imaginary lines is determined, and the average number of aggregate phase per imaginary line is determined for each of a plurality of line groups each comprised of five consecutive imaginary lines, there are three or more consecutive line groups which satisfy the condition that the average number of aggregate phase per imaginary line is larger, by 5 or more, than the minimum average number of aggregate phase per imaginary line among the plurality of line groups.
Abstract translation: 具有含有SiO 2和B 2 O 3的电阻器的火花塞。 玻璃是具有聚集相和中间相的相分离玻璃。 在电阻器的横截面中，当沿轴线CL1的方向以0.1mm的间隔绘制垂直于轴线CL1的多个假想线时，确定位于每个假想线上的聚集相位的数量 ，并且对于由五个连续虚线组成的多个线组中的每个线群，确定每个虚线的平均聚合相数，具有三个或更多个连续的线组，其满足以下条件：每个虚构的聚集相的平均数 线比多个线组中每个假想线的聚集相的最小平均数大5倍以上。
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公开(公告)号：US20150061485A1
公开(公告)日：2015-03-05
申请号：US14388092
申请日：2013-01-11
Applicant: NGK Spark Plug Co., Ltd.
Inventor： Haruki Yoshida , Takamitsu Mizuno
Abstract: A spark plug includes an insulator having an axial hole, a metal terminal member having an insert portion and a depression formation zone existing on the insert portion and having depressions, and a metallic shell. The spark plug satisfies the following conditions: (1) the insert portion has a length H of 35 mm or more; (2) the depression formation zone has a length F of 13 mm or more; (3) the insert portion has a smooth surface zone on its outer circumferential surface; (4) the ratio (A/B) between diameter A of a forward end of the insert portion and inside diameter B of the insulator measured at the forward end satisfies the relational expression 0.9≦A/B≦0.98; and (5) Vickers hardness of the insert portion measured at the center of a cross section of the insert portion is 150 Hv or more to 350 Hv or less.
Abstract translation: 火花塞包括具有轴向孔的绝缘体，具有插入部分的金属端子构件和存在于插入部分上并具有凹陷的凹陷形成区和金属壳。 火花塞满足以下条件：（1）插入部的长度H为35mm以上; （2）凹陷形成区域的长度F为13mm以上; （3）插入部在其外周面具有平滑的表面区域; （4）插入部前端的直径A与前端部测定的绝缘体的内径B之间的比（A / B）满足关系式0.9＆nlE; A / B＆nlE; 0.98; 和（5）在插入部分的横截面的中心测量的插入部分的维氏硬度为150Hv或更高至350Hv或更低。
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公开(公告)号：US09419415B2
公开(公告)日：2016-08-16
申请号：US14431358
申请日：2013-04-18
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takamitsu Mizuno , Satoshi Yano
Abstract: A spark plug includes an insulator with a through hole, a center electrode disposed at a tip end side of the through hole, a metal terminal nut disposed at a rear end side of the through hole, a resistor disposed in a position between the center electrode and the metal terminal nut inside of the through hole and apart from the center electrode, and a conductive seal that is disposed between the resistor and the center electrode inside of the through hole and contacts both the center electrode and the resistor. A contact surface between the resistor and the conductive seal includes at least one point where a distance in the central axis direction from a virtual plane that includes a rear end of the resistor and is vertical to the central axis is local maximum, and include at least one point where the distance is local minimum.
Abstract translation: 火花塞包括具有通孔的绝缘体，设置在通孔的前端侧的中心电极，设置在通孔的后端侧的金属端子螺母，设置在中心电极 并且金属端子螺母在通孔内部并且与中心电极分开，并且导电密封件设置在通孔内部的电阻器和中心电极之间，并与中心电极和电阻器接触。 电阻器和导电密封件之间的接触表面包括至少一个点，其中包括电阻器的后端并且垂直于中心轴线的虚拟平面在中心轴线方向上的距离是局部最大值，并且至少包括 一点距离是局部最小值。
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Patent Agency Ranking
公开(公告)号：US09035541B2
公开(公告)日：2015-05-19
申请号：US14388092
申请日：2013-01-11
Applicant: NGK Spark Plug Co., Ltd.
Inventor： Haruki Yoshida , Takamitsu Mizuno
Abstract: A spark plug includes an insulator having an axial hole, a metal terminal member having an insert portion and a depression formation zone existing on the insert portion and having depressions, and a metallic shell. The spark plug satisfies the following conditions: (1) the insert portion has a length H of 35 mm or more; (2) the depression formation zone has a length F of 13 mm or more; (3) the insert portion has a smooth surface zone on its outer circumferential surface; (4) the ratio (A/B) between diameter A of a forward end of the insert portion and inside diameter B of the insulator measured at the forward end satisfies the relational expression 0.9≦A/B≦0.98; and (5) Vickers hardness of the insert portion measured at the center of a cross section of the insert portion is 150 Hv or more to 350 Hv or less.
Abstract translation: 火花塞包括具有轴向孔的绝缘体，具有插入部分的金属端子构件和存在于插入部分上并具有凹陷的凹陷形成区和金属壳。 火花塞满足以下条件：（1）插入部的长度H为35mm以上; （2）凹陷形成区域的长度F为13mm以上; （3）插入部在其外周面具有平滑的表面区域; （4）插入部前端的直径A与前端部测定的绝缘体的内径B之间的比（A / B）满足关系式0.9＆nlE; A / B＆nlE; 0.98; 和（5）在插入部分的横截面的中心测量的插入部分的维氏硬度为150Hv或更高至350Hv或更低。
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公开(公告)号：US08987980B1
公开(公告)日：2015-03-24
申请号：US14478651
申请日：2014-09-05
Applicant: NGK Spark Plug Co., Ltd.
Inventor： Jumpei Kita , Haruki Yoshida , Takamitsu Mizuno
Abstract: A spark plug includes an insulator, a terminal electrode, a center electrode, a resistor, and a glass seal layer. The terminal electrode has: a recess part opened to the front end side and having a depth in a center axis direction of the terminal electrode; and a flat part neighboring the recess part at its outer circumference side. The relationship 0.52≦B/A≦0.91 is satisfied, wherein A (mm2) represents an area of a region surrounded by an outline of an outer circumference surface of the terminal electrode, and B (mm2) which represents an area of a region of the terminal electrode surrounded by an outline of an inner surface of the recess part, in a cross section orthogonal to the center axis and located 0.1 mm away from a front end along the center axis to the rear end side.
Abstract translation: 火花塞包括绝缘体，端子电极，中心电极，电阻器和玻璃密封层。 端子电极具有：开口到前端侧并具有端子电极的中心轴方向的深度的凹部; 以及在其外周侧与凹部相邻的平坦部。 满足0.52＆nlE; B / A＆nlE; 0.91的关系，其中A（mm2）表示由端子电极的外周面的轮廓包围的区域的面积，B（mm2）表示区域的面积 在垂直于中心轴线的截面中沿着中心轴线至后端侧位于距离前端0.1mm的位置上，由凹部的内表面的轮廓包围的端子电极。
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公开(公告)号：US09484718B2
公开(公告)日：2016-11-01
申请号：US14912753
申请日：2014-08-08
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Haruki Yoshida , Takamitsu Mizuno , Masaaki Kumagai , Jumpei Kita , Yoshitomo Iwasaki , Toshitaka Honda
Abstract: A spark plug includes an insulator having an axial hole, a center electrode inserted into a forward portion of the axial hole, a terminal electrode inserted into a rear portion of the axial hole, and an interelectrode insert which contains glass and electrically conductive carbon and is disposed in the axial hole between the center electrode and the terminal electrode. The interelectrode insert has a resistance of 1.0 kΩ to 3.0 kΩ, and the interelectrode insert has a carbon content of 1.5% by mass to 4.0% by mass at a forward portion located forward of a center point between the rear end of the center electrode and the forward end of the terminal electrode. Furthermore, the forward portion is lower in resistance than a rear portion of the interelectrode insert located rearward of the center point.
Abstract translation: 火花塞包括具有轴向孔的绝缘体，插入到轴向孔的前部的中心电极，插入到轴向孔的后部的端子电极和包含玻璃和导电性碳的电极间插入件 设置在中心电极和端子电极之间的轴向孔中。 电极间插入件具有1.0kΩ至3.0kΩ的电阻，并且电极间插入件在位于中心电极的后端和中间电极的后端之间的中间点的前部处的碳含量为1.5质量％至4.0质量％ 端子电极的前端。 此外，前部的电阻低于位于中心点后方的电极间插入件的后部。
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公开(公告)号：US09312664B2
公开(公告)日：2016-04-12
申请号：US14419590
申请日：2013-03-20
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Haruki Yoshida , Takamitsu Mizuno , Satoshi Yano
Abstract: A spark plug having a resistor containing SiO2 and B2O3. The glass is a phase-separated glass having aggregate phase and an intervening phase. In a cross section of the resistor, when a plurality of imaginary lines perpendicular to an axial line CL1 are drawn at intervals of 0.1 mm in the direction of the axial line CL1, the number of aggregate phase located on each of the imaginary lines is determined, and the average number of aggregate phase per imaginary line is determined for each of a plurality of line groups each comprised of five consecutive imaginary lines, there are three or more consecutive line groups which satisfy the condition that the average number of aggregate phase per imaginary line is larger, by 5 or more, than the minimum average number of aggregate phase per imaginary line among the plurality of line groups.
Abstract translation: 具有含有SiO 2和B 2 O 3的电阻器的火花塞。 玻璃是具有聚集相和中间相的相分离玻璃。 在电阻器的横截面中，当沿轴线CL1的方向以0.1mm的间隔绘制垂直于轴线CL1的多个假想线时，确定位于每个假想线上的聚集相位的数量 ，并且对于由五个连续虚线组成的多个线组中的每个线群，确定每个虚线的平均聚合相数，具有三个或更多个连续的线组，其满足以下条件：每个虚构的聚集相的平均数 线比多个线组中每个假想线的聚集相的最小平均数大5倍以上。
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公开(公告)号：US20150263490A1
公开(公告)日：2015-09-17
申请号：US14431358
申请日：2013-04-18
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Takamitsu Mizuno , Satoshi Yano
IPC: H01T13/40
Abstract: A spark plug includes an insulator with a through hole, a center electrode disposed at a tip end side of the through hole, a metal terminal nut disposed at a rear end side of the through hole, a resistor disposed in a position between the center electrode and the metal terminal nut inside of the through hole and apart from the center electrode, and a conductive seal that is disposed between the resistor and the center electrode inside of the through hole and contacts both the center electrode and the resistor. A contact surface between the resistor and the conductive seal includes at least one point where a distance in the central axis direction from a virtual plane that includes a rear end of the resistor and is vertical to the central axis is local maximum, and include at least one point where the distance is local minimum.
Abstract translation: 火花塞包括具有通孔的绝缘体，设置在通孔的前端侧的中心电极，设置在通孔的后端侧的金属端子螺母，设置在中心电极 并且金属端子螺母在通孔内部并且与中心电极分开，并且导电密封件设置在通孔内部的电阻器和中心电极之间，并与中心电极和电阻器接触。 电阻器和导电密封件之间的接触表面包括至少一个点，其中包括电阻器的后端并且垂直于中心轴线的虚拟平面在中心轴线方向上的距离是局部最大值，并且至少包括 一点距离是局部最小值。
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