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公开(公告)号：US09234870B2
公开(公告)日：2016-01-12
申请号：US14355457
申请日：2012-11-20
Applicant: NGK SPARK PLUG CO. LTD.
Inventor： Shigehiro Otsuka , Masaki Onkawa , Toru Iwano , Satoshi Teramoto , Kuniharu Tanaka , Takeshi Mitsuoka
IPC: G01N27/407 , G01N27/411
CPC classification number: G01N27/4077 , G01N27/4118
Abstract: A gas sensor element (100) including a detection portion (150) including a solid electrolyte body (105) and a pair of electrodes (104) and (106) disposed on the solid electrolyte body; and a porous protection layer (20) covering the detection portion. The porous protection layer includes an inner porous layer (21) and an outer porous layer (23); the inner porous layer is higher in porosity than the outer porous layer; the inner porous layer contains, as main components, ceramic particles (21a), and ceramic fiber filaments (21b) which are mainly formed of a ceramic material and which have a mean fiber length of 70 to 200 μm; and the amount of the ceramic fiber filaments is 25 to 75 vol % on the basis of the total amount of the ceramic particles and the ceramic fiber filaments, the total amount being taken as 100 vol %.
Abstract translation: 一种气体传感器元件（100），包括：检测部（150），其包括固体电解质体（105）和设置在所述固体电解质体上的一对电极（104）和（106） 以及覆盖所述检测部的多孔保护层（20）。 多孔保护层包括内部多孔层（21）和外部多孔层（23）; 内多孔层的孔隙率高于外多孔层; 内部多孔层含有主要由陶瓷材料形成且平均纤维长度为70〜200μm的陶瓷粒子（21a）和陶瓷纤维丝（21b）， 以陶瓷粒子和陶瓷纤维丝的总量计，陶瓷纤维长丝的量为25〜75体积％，总量为100体积％。
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公开(公告)号：US10348061B2
公开(公告)日：2019-07-09
申请号：US16018949
申请日：2018-06-26
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hideto Yamada , Haruki Yoshida , Kuniharu Tanaka , Michitaka Yamada , Yusuke Nomura
IPC: H01T13/38 , H01T13/60 , B82Y30/00 , C04B35/64 , C04B35/111 , C04B35/117 , C04B35/626
Abstract: The spark plug includes an insulator formed of an alumina-based sintered body, and the insulator contains Si, Ba, and a rare earth element. In an analysis of the insulator by using a scanning transmission electron microscope having an electron-probe diameter of 1 nm, Si and a rare earth element are detected at a crystal grain boundary having a thickness of 15 nm or less, a content of an alkaline earth metal is less than a detection limit at the crystal grain boundary, and a diffraction spot is present in an electron diffraction pattern of a portion where Ba is detected.
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公开(公告)号：US20170326765A1
公开(公告)日：2017-11-16
申请号：US15534529
申请日：2015-09-23
Applicant: NGK Spark Plug Co., Ltd.
Inventor： Hirokazu Kurono , Hironori Uegaki , Toshitaka Honda , Hiroyuki Hazama , Kuniharu Tanaka , Hiroyuki Kawaji
CPC classification number: B29C45/14655 , B28B1/24 , B28B7/0038 , B28B7/18 , B28B7/346 , B28B13/06 , H01T13/20 , H01T13/34 , H01T13/39 , H01T21/02
Abstract: An employed rear mold is comprised of a plurality of mold pieces. The plurality of mold pieces include a first mold piece which forms a first partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface, and a second mold piece which is located axially forward of the first mold piece and forms a second partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface. Releasing the molded body includes starting to move the first mold piece rearward in relation to a rear molded portion, and, subsequently to starting to move the first mold piece, starting to move the second mold piece rearward in relation to the rear molded portion, thereby disassembling the rear mold into the plurality of mold pieces.
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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
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。
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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
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 。
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Patent Agency Ranking
公开(公告)号：US20140291150A1
公开(公告)日：2014-10-02
申请号：US14355457
申请日：2012-11-20
Applicant: NGK SPARK PLUG CO. LTD.
Inventor： Shigehiro Otsuka , Masaki Onkawa , Toru Iwano , Satoshi Teramoto , Kuniharu Tanaka , Takeshi Mitsuoka
IPC: G01N27/407
CPC classification number: G01N27/4077 , G01N27/4118
Abstract: A gas sensor element (100) including a detection portion (150) including a solid electrolyte body (105) and a pair of electrodes (104) and (106) disposed on the solid electrolyte body; and a porous protection layer (20) covering the detection portion. The porous protection layer includes an inner porous layer (21) and an outer porous layer (23); the inner porous layer is higher in porosity than the outer porous layer; the inner porous layer contains, as main components, ceramic particles (21a), and ceramic fiber filaments (21b) which are mainly formed of a ceramic material and which have a mean fiber length of 70 to 200 μm; and the amount of the ceramic fiber filaments is 25 to 75 vol % on the basis of the total amount of the ceramic particles and the ceramic fiber filaments, the total amount being taken as 100 vol %.
Abstract translation: 一种气体传感器元件（100），包括：检测部（150），其包括固体电解质体（105）和设置在所述固体电解质体上的一对电极（104）和（106） 以及覆盖所述检测部的多孔保护层（20）。 多孔保护层包括内部多孔层（21）和外部多孔层（23）; 内多孔层的孔隙率高于外多孔层; 内部多孔层含有主要由陶瓷材料形成且平均纤维长度为70〜200μm的陶瓷粒子（21a）和陶瓷纤维丝（21b）， 以陶瓷粒子和陶瓷纤维丝的总量计，陶瓷纤维长丝的量为25〜75体积％，总量为100体积％。
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公开(公告)号：US11183819B2
公开(公告)日：2021-11-23
申请号：US16574170
申请日：2019-09-18
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Yutaka Yokoyama , Nobuyoshi Araki , Kuniharu Tanaka , Haruki Yoshida , Hironori Uegaki , Toshiki Kon , Yusuke Nomura
IPC: H01T13/38 , H01B3/12 , C04B35/111
Abstract: A spark plug according to one embodiment of the present invention includes an insulator formed of an alumina-based sintered body, wherein the insulator contains 90 wt % or more of an aluminum component in terms of oxide, and wherein crystal grains of the insulator has an average grain size of 1.5 mm or smaller and a grain size standard deviation of 1.2 μm or smaller.
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公开(公告)号：US10751923B2
公开(公告)日：2020-08-25
申请号：US15534529
申请日：2015-09-23
Applicant: NGK Spark Plug Co., Ltd.
Inventor： Hirokazu Kurono , Hironori Uegaki , Toshitaka Honda , Hiroyuki Hazama , Kuniharu Tanaka , Hiroyuki Kawaji
IPC: B29C45/14 , H01T21/02 , H01T13/20 , B28B7/34 , B28B13/06 , B28B7/18 , B28B7/00 , B28B1/24 , H01T13/34 , H01T13/39
Abstract: An employed rear mold is comprised of a plurality of mold pieces. The plurality of mold pieces include a first mold piece which forms a first partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface, and a second mold piece which is located axially forward of the first mold piece and forms a second partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface. Releasing the molded body includes starting to move the first mold piece rearward in relation to a rear molded portion, and, subsequently to starting to move the first mold piece, starting to move the second mold piece rearward in relation to the rear molded portion, thereby disassembling the rear mold into the plurality of mold pieces.
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公开(公告)号：US10340667B2
公开(公告)日：2019-07-02
申请号：US16156337
申请日：2018-10-10
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Toshinori Takeichi , Kuniharu Tanaka , Hirokazu Kurono , Haruki Yoshida , Hironori Uegaki
Abstract: A spark plug having a resistor disposed between a metal terminal and a center electrode so as to be electrically connected to the metal terminal and the center electrode, wherein the resistor is in contact with an inner circumferential surface of the insulator. On a cross section taken along the axial line so as to include the axial line, in a case where a plurality of points are plotted at predetermined intervals in a direction of the axial line so as to be present on a partial boundary line, within an arbitrary range in the direction of the axial line, of a boundary line between the insulator and the resistor, and a regression line is drawn by a least-squares method with use of the plurality of points, an average value of distances in a direction perpendicular to the regression line between the regression line and the partial boundary line is 0.1 to 0.3 μm.
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20.发明授权公开(公告)号：US10305260B2
公开(公告)日：2019-05-28
申请号：US16033661
申请日：2018-07-12
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Haruki Yoshida , Kuniharu Tanaka , Toshinori Takeichi , Michitaka Yamada , Yusuke Nomura
Abstract: Disclosed is a spark plug including: an insulator having an axial hole formed along an axis of the spark plug; a center electrode disposed in a front end side of the axial hole; and a metal shell fixed around an outer circumference of the insulator, with a front end portion of the insulator protruding frontward from a front end of the metal shell. The front end portion of the insulator consists only of a first section and a second section located adjacent to and frontward of the first section and having an inner diameter larger than that of the first section. The second section has a chamfered area formed on an inner circumferential surface thereof so as to continue to a front end of the insulator.
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