公开(公告)号：US12110577B2

公开(公告)日：2024-10-08

申请号：US17421201

申请日：2020-03-11

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Hiroshi Watanabe ,  Satoshi Mori ,  Manami Fujii ,  Katsuya Takaoka ,  Hiroki Takeuchi ,  Hisashi Kozuka

IPC: B22F1/00 ,  B22F1/05 ,  B22F1/052 ,  B22F1/105 ,  B22F1/16 ,  C22C38/02 ,  H01F1/20

CPC classification number: C22C38/02 ,  B22F1/00 ,  B22F1/05 ,  B22F1/052 ,  B22F1/105 ,  B22F1/16 ,  H01F1/20 ,  B22F2301/35 ,  B22F2302/253 ,  B22F2304/10 ,  B22F2998/10 ,  B22F1/142 ,  B22F1/16 ,  B22F3/02 ,  B22F2003/248

Abstract: The iron loss of a dust core is reduced. A dust core (1) includes soft magnetic metal particles (3) having an average particle size of 5 μm or more and 30 μm or less, and a particle boundary phase (6). The particle boundary phase (6) includes a polycrystalline compound containing Al (aluminum). When a sectional structure of the dust core (1) is observed, an area percentage of α-Al2O3 in the particle boundary phase (6) is 75% or less. An average thickness Ta of the particle boundary phase (6) is 10 nm or more and 300 nm or less. According to the present invention, the iron loss is reduced.

公开(公告)号：US09373940B2

公开(公告)日：2016-06-21

申请号：US14707344

申请日：2015-05-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Katsuya Takaoka ,  Kazuhiro Kurosawa ,  Kuniharu Tanaka ,  Haruki Yoshida ,  Hirokazu Kurono ,  Toshitaka Honda

IPC: H01T13/20 ,  H01T13/04 ,  H01T13/41 ,  H01T13/05

CPC classification number: H01T13/04 ,  H01T13/05 ,  H01T13/41

Abstract: A spark plug having an insulator with a through hole formed therein in a direction of an axis, a center electrode disposed in a front side of the through hole, a metal terminal disposed in a rear side of the through hole, an electrical connection part arranged in the through hole to establish electrical connection between the center electrode and the metal terminal and a metal shell holding therein the insulator. The electrical connection part has a conductor including a conductive material and at least one kind of Fe-containing oxide material. The Fe-containing oxide material contains at least FeO. The conductor satisfies a relationship of 0.06≦S1/(S1+S2)≦0.46 where, in a cross section taken along the axis, S1 is an area occupied by the conductive material and S2 is an area occupied by the Fe-containing oxide material.

Abstract translation: 一种火花塞，具有绝缘体，其沿着轴方向形成有贯通孔，设置在所述通孔的前侧的中心电极，设置在所述通孔的后侧的金属端子，布置在所述通孔的后侧的电连接部 在通孔中建立中心电极和金属端子之间的电连接以及保持绝缘体的金属壳。 电连接部分具有包括导电材料和至少一种含Fe氧化物材料的导体。 含Fe氧化物材料至少含有FeO。 导体满足0.06＆nlE; S1 /（S1 + S2）＆nlE; 0.46的关系，其中在沿着轴线截取的横截面中，S1是由导电材料占据的面积，S2是由含Fe 氧化物。

公开(公告)号：US09281662B2

公开(公告)日：2016-03-08

申请号：US14723506

申请日：2015-05-28

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Katsuya Takaoka ,  Kazuhiro Kurosawa ,  Kuniharu Tanaka ,  Haruki Yoshida ,  Hirokazu Kurono ,  Toshitaka Honda

IPC: H01T13/04

CPC classification number: H01T13/04 ,  H01T13/41

Abstract: A spark plug including an insulator having an axial hole, a center electrode held at one end side and a terminal electrode held at the other end side of the axial hole, an electrical connection portion electrically connecting the center electrode and the terminal electrode inside the axial hole, wherein the electrical connection portion includes a conductor including a ceramic phase and a metal wire having a spiral structure portion, wherein the metal wire has a wire diameter of 0.1 mm or greater and 0.5 mm or smaller, and wherein the spiral structure portion of the metal wire is configured such that an outer diameter thereof is 1.0 mm or greater and 3 mm or smaller, a pitch thereof is 0.3 mm or greater and 1 mm or smaller, and a height thereof is 8 mm or greater and 30 mm or smaller.

Abstract translation: 一种火花塞，其包括具有轴孔的绝缘体，一端保持的中心电极和保持在所述轴孔的另一端侧的端子电极，在所述轴向孔内电连接所述中心电极和所述端子电极的电连接部 其特征在于，所述电连接部包括具有陶瓷相的导体和具有螺旋结构部的金属线，所述金属线的线径为0.1mm以上且0.5mm以下，其特征在于， 金属线的外径为1.0mm以上且3mm以下，间距为0.3mm以上且1mm以下，高度为8mm以上且30mm以下 。

公开(公告)号：US12273965B2

公开(公告)日：2025-04-08

申请号：US16975527

申请日：2019-11-13

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Ryunosuke Sakamaki ,  Katsuya Takaoka ,  Hiroshi Watanabe

IPC: H05B3/12 ,  C04B35/581 ,  H01L21/67 ,  H01L21/683 ,  H01L21/687 ,  H05B3/03 ,  H05B3/06 ,  H05B3/20 ,  H05B3/28 ,  H05B3/74

Abstract: A holding device including a ceramic member formed of a sintered ceramic material containing aluminum nitride as a main component, a heating resistor element formed of a metal and disposed in the ceramic member, an electrically conductive electricity supply connection member in contact with the heating resistor element, and an electrically conductive electricity supply terminal electrically connected to the electricity supply connection member. The holding device holds an object on the surface of the ceramic member. In the holding device, at least a portion of the surface of the electricity supply connection member, excluding its contact surface for contact with the heating resistor element and its connection surface for connection with the electricity supply terminal, is covered with a coat layer formed of a nitride containing at least one of Al, Ti, Zr, V, Ta, and Nb. Also disclosed is a method of manufacturing the holding device.

公开(公告)号：US09997894B2

公开(公告)日：2018-06-12

申请号：US15465649

申请日：2017-03-22

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Hironori Uegaki ,  Kazuhiro Kurosawa ,  Katsuya Takaoka ,  Kuniharu Tanaka

IPC: H01T13/34 ,  H01T13/40

CPC classification number: H01T13/40 ,  H01T13/34 ,  H01T13/41

Abstract: A spark plug includes a cylindrical metallic shell having a ground electrode at a forward end of the cylindrical metallic shell, a cylindrical insulator held in the metallic shell, a center electrode disposed in the insulator, a resistor element disposed in the insulator and having a forward end located rearward of a rear end of the center electrode, a forward-end-side electrically conductive seal layer disposed in the insulator to be located between the center electrode and the resistor element, and a rear-end-side electrically conductive seal layer disposed in the insulator to be located rearward of the resistor element. The forward end of the resistor element is located forward of the rear end of the metallic shell, and the rear end of the resistor element is located rearward of the rear end of the metallic shell.

公开(公告)号：US09653888B2

公开(公告)日：2017-05-16

申请号：US15272807

申请日：2016-09-22

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yutaka Yokoyama ,  Kuniharu Tanaka ,  Katsuya Takaoka ,  Shun Kondo ,  Nobuyoshi Araki ,  Toshiki Kon ,  Haruki Yoshida ,  Jumpei Isasa ,  Hirokazu Kurono ,  Hironori Uegaki ,  Toshimasa Saji ,  Yusuke Nomura

IPC: H01T13/38

CPC classification number: H01T13/38 ,  H01T13/60

Abstract: A spark plug including an insulator containing not less than 92 mass % and not greater than 96 mass % of Al component in terms of oxide, wherein the insulator is formed from an alumina sintered body comprising alumina crystal and a grain boundary phase present between crystal grains of the alumina crystal. Assuming that mass contents of an Si component, an Mg component, a Ba component, and a Ca component in terms of oxide are represented by MSiO2, MMgO, MBaO, and MCaO, respectively, and a sum of MSiO2, MMgO, MBaO, and MCaO is represented by Mt, the grain boundary phase contains these components so as to satisfy conditions (1) to (4) as follows: (1) 0.17≦MSiO2/Mt≦0.47; (2) 0.005≦MMgO/Mt≦0.07; (3) 0.29≦MBaO/Mt≦0.77; (4) 0.03≦MCaO/Mt≦0.19.

公开(公告)号：US09595814B2

公开(公告)日：2017-03-14

申请号：US15108115

申请日：2014-12-25

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takashi Kasashima ,  Katsuya Takaoka ,  Kazuhiro Kurosawa ,  Kuniharu Tanaka ,  Toshitaka Honda ,  Hirokazu Kurono ,  Haruki Yoshida ,  Hironori Uegaki

IPC: H01T13/05 ,  H01T13/41 ,  F02P11/00

CPC classification number: H01T13/05 ,  F02P11/00 ,  H01T13/41

Abstract: A connection portion connecting a center electrode and a terminal metal fixture together in a through hole of the insulator includes a resistor and a magnetic substance structure including a magnetic substance and a conductor and being disposed on a leading end side or a rear end side of the resistor while being positioned away from the resistor. The connection portion further includes a first conductive sealing portion, a second conductive sealing portion and a third conductive sealing portion. The first conductive sealing portion is disposed on a leading end side of a first member and is in contact therewith. The second conductive sealing portion is disposed between the first member and a second member and is in contact with the first and second members. The third conductive sealing portion is disposed on a rear end side of the second member and is in contact therewith.

Abstract translation: 在绝缘体的通孔中连接中心电极和端子金属固定器的连接部分包括电阻器和包括磁性物质和导体的磁性物质结构，并且设置在所述绝缘体的前端侧或后端侧 电阻器，同时远离电阻器定位。 连接部分还包括第一导电密封部分，第二导电密封部分和第三导电密封部分。 第一导电密封部分设置在第一构件的前端侧并与其接触。 第二导电密封部分设置在第一构件和第二构件之间并且与第一构件和第二构件接触。 第三导电密封部分设置在第二构件的后端侧并与其接触。

公开(公告)号：US09466951B2

公开(公告)日：2016-10-11

申请号：US14441315

申请日：2013-06-13

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Katsuya Takaoka ,  Hironori Uegaki ,  Hirokazu Kurono ,  Toshitaka Honda

IPC: H01T13/20 ,  H01T13/38 ,  H01B3/12 ,  H01B7/28 ,  C04B35/111

CPC classification number: H01T13/38 ,  C04B35/111 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3418 ,  C04B2235/3463 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/85 ,  C04B2235/96 ,  H01B3/12 ,  H01B7/2806

Abstract: A spark plug having an insulator formed of an alumina-based sintered material which contains an Si component and a rare earth element component that satisfy the following conditions (1) and (2): (1) an oxide-reduced amount of the Si component (mass %) is greater than or equal to 0.05 and less than or equal to 0.45; and (2) a ratio of an oxide-reduced amount of the rare earth element component to an oxide-reduced amount of the Si component is greater than or equal to 2.5 and less than or equal to 4.5, and which has alumina grains and an alumina grain boundary phase including a complex oxide crystal phase satisfying the following condition (3): (3) the complex oxide crystal phase contains at least two components selected from among an Al component, an Si component, a Group 2 element component, and a rare earth element component.

Abstract translation: 一种火花塞，其具有由含有Si成分和满足以下条件（1）和（2））的Si成分和稀土元素成分的氧化铝类烧结体形成的绝缘体：（1）氧化物还原量的Si成分 （质量％）大于或等于0.05且小于或等于0.45; 和（2）稀土元素成分的氧化物还原量与Si成分的氧化物还原量的比例大于或等于2.5且小于或等于4.5，并且具有氧化铝颗粒和 氧化铝晶界相包含满足以下条件（3）的复合氧化物晶相：（3）复合氧化物晶相含有选自Al成分，Si成分，2族元素成分和 稀土元素成分。

公开(公告)号：US09160145B2

公开(公告)日：2015-10-13

申请号：US14273026

申请日：2014-05-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Katsuya Takaoka ,  Yutaka Yokoyama ,  Kengo Fujimura ,  Hironori Uegaki ,  Hiroki Takeuchi ,  Hirokazu Kurono ,  Toshitaka Honda ,  Kuniharu Tanaka ,  Takeshi Mitsuoka

IPC: H01T13/38 ,  C04B35/50 ,  C04B35/505 ,  C04B35/111

CPC classification number: H01T13/38 ,  C04B35/111 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3232 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3418 ,  C04B2235/786 ,  C04B2235/85

Abstract: An insulator for spark plug with a main constituent of alumina and containing silicon includes a grain boundary phase positioned between alumina particles. The grain boundary phase contains: a group 2A element; a rare earth element; and at least one kind of zirconium, titanium, chrome, niobium, manganese, and iron (a first element). Assuming that a total amount of the rare earth element is X (mass %), a total amount of the group 2A element is Y (mass %), and a total amount of the first element is Z (mass %), the following are met: 0.40≦Y/X≦2.00 0.10≦Z/X≦0.40.

Abstract translation: 具有主要成分为氧化铝和含硅的火花塞的绝缘体包括位于氧化铝颗粒之间的晶界相。 晶界相包含：2A族元素; 稀土元素; 和至少一种锆，钛，铬，铌，锰和铁（第一元素）。 假设稀土元素的总量为X（质量％），则2A族元素的总量为Y（质量％），第一元素的总量为Z（质量％），以下为 满足：0.40＆nlE; Y / X＆nlE; 2.00 0.10＆nlE; Z / X＆lt;

公开(公告)号：US20150047880A1

公开(公告)日：2015-02-19

申请号：US14377306

申请日：2012-11-29

Applicant: NGK Spark Plug Co., LTD.

Inventor： Katsuya Takaoka ,  Hirokazu Kurono ,  Toshitaka Honda ,  Syuuichiro Wakizoe ,  Mitsushiro Kondo

IPC: H01T13/38

CPC classification number: H01T13/38 ,  B82Y30/00 ,  C04B35/117 ,  C04B35/62655 ,  C04B35/62695 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3418 ,  C04B2235/781 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/788 ,  C04B2235/80 ,  F02P13/00

Abstract: A spark plug exhibiting excellent withstand voltage characteristics and mechanical strength at high temperature, which are comparable to those at ambient temperature. The spark plug having an insulator formed of an alumina-based sintered material containing: an Al component, an Si component, a Group 2 element component, and a rare earth element component. The amounts of such components satisfy a condition (1): 0.25≦ oxide-reduced amount (mass %) of the Si component ≦1.25, and a condition (2): 1.35≦[(oxide-reduced amount of the Si component)/((oxide-reduced amount of the Group 2 element component)/(oxide-reduced amount of the rare earth element component))]≦7.5. The alumina-based sintered material includes alumina grains, and a glass phase including a crystal phase that satisfies a condition (3) that the crystal phase includes at least one of an aluminate crystal phase and a silicate crystal phase, each having a grain size of 20 to 350 nm.

Abstract translation: 具有优异的耐高压特性和高温下的机械强度的火花塞，与环境温度相当。 所述火花塞具有绝缘体，所述绝缘体由包含Al组分，Si组分，第2族元素组分和稀土元素组分的氧化铝基烧结材料形成。 这些组分的量满足条件（1）：0.25＆nlE; Si成分的氧化物还原量（质量％）：1.25，条件（2）：1.35＆nlE; [（Si成分的氧化物还原量）/（（第2族元素成分的氧化物还原量 ）/（氧化物还原量的稀土元素成分））]＆nlE; 7.5。 所述氧化铝系烧结体包含氧化铝粒子，以及含有结晶相的玻璃相，所述结晶相满足以下条件（3）：所述结晶相包含铝酸盐结晶相和硅酸盐结晶相中的至少一种， 20〜350nm。