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1. 发明申请

US20160285242A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20160285242A1
公开(公告)日：2016-09-29
申请号：US15071728
申请日：2016-03-16
申请人： NGK SPARK PLUG CO., LTD.
发明人： Yoshitomo IWASAKI , Haruki YOSHIDA , Toshitaka HONDA
IPC分类号： H01T13/40 , H01T13/36 , H01T13/08
CPC分类号： H01T13/40 , H01T13/08 , H01T13/34 , H01T13/36 , H01T13/41
摘要： A spark plug having a resistor disposed within a through hole of an insulator and between a center electrode and a metal terminal so as to be spaced apart from the center electrode in a direction of an axial line; and a conductive glass seal layer provided between the resistor and the center electrode and electrically connecting the resistor and the center electrode to each other, the conductive glass seal layer has a diameter of 3.9 mm or less, and a joined surface of the conductive glass seal layer and the resistor has a convex shape toward the center electrode side. A length α from a rear end to a front end of the joined surface and a maximum length β of the conductive glass seal layer in the direction of the axial line meets a relation of α/β≧0.4.
摘要翻译：一种火花塞，其具有设置在绝缘体的通孔内并且在中心电极和金属端子之间的电阻器，以沿着轴线方向与中心电极间隔开; 以及设置在电阻器和中心电极之间并将电阻器和中心电极彼此电连接的导电玻璃密封层，导电玻璃密封层的直径为3.9mm以下，导电玻璃密封件的接合面并且电阻器朝向中心电极侧具有凸形形状。接合面的后端到前端的长度α和导电性玻璃密封层的轴线方向的最大长度β满足α/β≥0.4的关系。

2. 发明申请

US20150318672A1 SPARK PLUG 审中-公开
标题翻译： SPARK插头
公开(公告)号：US20150318672A1
公开(公告)日：2015-11-05
申请号：US14700508
申请日：2015-04-30
申请人： NGK SPARK PLUG CO., LTD.
发明人： Yoshitomo IWASAKI , Haruki YOSHIDA
IPC分类号： H01T13/41
CPC分类号： H01T13/41 , H01T13/05
摘要： A spark plug includes an insulator with an axial through hole, a center electrode disposed in a front side of the through hole and a metal terminal disposed in a rear side of the through hole. The spark plug further includes a front conductive glass seal layer, a first resistor, a rear conductive glass seal layer, a seal contact member, a second resistor and a conductive elastic material arranged, in this order from the front to the rear, between the center electrode and the metal terminal within the through hole. The first resistor is formed containing at least a conductive material and a glass material. The second resistor is formed as a wire wound resistor having 30 or more turns of wire.
摘要翻译：火花塞包括具有轴向通孔的绝缘体，设置在通孔前侧的中心电极和设置在通孔后侧的金属端子。火花塞还包括前导电玻璃密封层，第一电阻器，后导电玻璃密封层，密封接触构件，第二电阻器和导电弹性材料，从前到后依次布置在中心电极和通孔内的金属端子。形成至少包含导电材料和玻璃材料的第一电阻器。第二电阻器形成为具有30匝或更多匝线的绕线电阻器。

3. 发明申请

US20190305523A1 SPARK PLUG 审中-公开
公开(公告)号：US20190305523A1
公开(公告)日：2019-10-03
申请号：US16365933
申请日：2019-03-27
申请人： NGK SPARK PLUG CO., LTD.
发明人： Yoshitomo IWASAKI , Hironori UEGAKI
IPC分类号： H01T13/34 , H01T13/41
摘要： Disclosed is a spark plug including: an insulator having an axial through hole formed with a first hole region and a second hole region larger in inner diameter than the first hole region; a center electrode having a collar portion disposed in the second hole region; a resistor disposed in the second hole region, with a front end of the resistor being located apart from a rear end of the center electrode; and a conductive seal material arranged at least between the center electrode and the resistor within the second hole region, wherein the center electrode has a recess recessed from the rear end thereof toward the front, wherein the recess is provided at least at a location of a maximum outer diameter section of the collar portion, and wherein the conductive seal material is filled into the recess from the rear end of the center electrode.

4. 发明申请

US20160204580A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20160204580A1
公开(公告)日：2016-07-14
申请号：US14912753
申请日：2014-08-08
申请人： NGK SPARK PLUG CO., LTD.
发明人： Haruki YOSHIDA , Takamitsu MIZUNO , Masaaki KUMAGAI , Jumpei KITA , Yoshitomo IWASAKI , Toshitaka HONDA
IPC分类号： H01T13/39 , H01T13/41
CPC分类号： H01T13/39 , H01T13/05 , H01T13/34 , H01T13/41
摘要： 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.
摘要翻译：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。电极间插入物的电阻为1.0 k＆OHgr; 至3.0kΩ，并且电极间插入物在位于中心电极的后端和端子电极的前端之间的中心点的前部的碳含量为1.5质量％至4.0质量％。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。

5. 发明申请

US20160204579A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20160204579A1
公开(公告)日：2016-07-14
申请号：US14913772
申请日：2014-06-02
申请人： NGK SPARK PLUG CO., LTD.
发明人： Haruki YOSHIDA , Jumpei KITA , Yoshitomo IWASAKI , Toshitaka HONDA
IPC分类号： H01T13/05 , H01T13/20
CPC分类号： H01T13/41 , H01T13/05 , H01T13/20
摘要： A resistor element of a spark plug containing ZrO2, wherein a target region is defined by a rectangular region where the size in the direction perpendicular to an axial line is 1800 μm and the size in the direction of the axial line is 2400 μm. In the case where the target region is divided into a plurality of square regions having lengths of 200 μm on a side, a transverse line-shaped region is defined by a region in a line shape that is constituted of nine square regions arranged in the direction perpendicular to the axial line. A first type region is defined by the square region where a proportion of an area of ZrO2 is 25% or more, and a second type region is defined by the square region where a proportion of an area of ZrO2 is less than 25%.
摘要翻译：包含ZrO 2的火花塞的电阻元件，其中，目标区域由与轴线垂直的方向的尺寸为1800μm，轴线方向的尺寸为2400μm的矩形区域限定。在目标区域被分成多个长度为200μm的方形区域的情况下，横向线状区域由线状形状的区域限定，该区域由方向上排列的9个正方形区域垂直于轴线。第一类型区域由ZrO 2面积的比例为25％以上的正方形区域限定，第二类型区域由ZrO 2的面积比例小于25％的正方形区域构成。

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