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公开(公告)号：US10302505B2
公开(公告)日：2019-05-28
申请号：US15284047
申请日：2016-10-03
Applicant: NGK Spark Plug Co., LTD.
Inventor： Toshiya Oya , Seiji Oya
Abstract: A temperature sensor includes: a temperature sensing element including a temperature sensing portion, electrical characteristics of which vary depending on temperature, and an electrode wire for outputting an electric signal from the temperature sensing portion to the outside; and a sheath core wire (signal wire) electrically connected to the electrode wire. The electrode wire is made of a platinum-rhodium alloy. The platinum-rhodium alloy is composed of 0.1 to 1.5 mol % of Sr, 22 to 40 mol % of Rh, and a remainder composed of Pt and unavoidable impurities. The platinum-rhodium alloy has a second-phase mainly composed of Sr and Pt whose precipitated grains are dispersed in a matrix phase. An area ratio of the second phase at a cross section is not greater than 25%.
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公开(公告)号：US10247695B2
公开(公告)日：2019-04-02
申请号：US15702129
申请日：2017-09-12
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Seiji Oya , Yuta Oishi
IPC: G01N27/26 , G01N27/00 , G01N7/00 , G01N27/407 , G01N27/41
Abstract: Provided are: an electrode for a gas sensor formed as a porous electrode so as to stably allow reduction in electrode resistance for excellent low-temperature activity; and a gas sensor. The electrode (108, 110) for the gas sensor is adapted for use on a surface of a solid electrolyte body (109), which is predominantly formed of zirconia, and contains particles (2) of a noble metal or an alloy thereof, first ceramic particles (4) of stabilized zirconia or partially stabilized zirconia and second ceramic particles (6) of one or more selected from the group consisting of Al2O3, MgO, La2O3, spinel, zircon, mullite and cordierite, wherein the second ceramic particles are contained in an amount smaller than that of the first ceramic particles.
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公开(公告)号：US09766134B2
公开(公告)日：2017-09-19
申请号：US14640637
申请日：2015-03-06
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Seiji Oya , Toshiya Oya
CPC classification number: G01K7/18 , G01K1/12 , G01K2205/04
Abstract: In a temperature sensitive element, a covering member containing a glass as a main component and having a thermal expansion coefficient smaller than that of output lines is provided on pads to cover at least portions of output lines located on the pads. The pads are formed of a glass-based material which contains, as main components, a metal and a glass having a thermal expansion coefficient smaller than that of a ceramic substrate, and the thermal expansion coefficient of the pads is set to be smaller than that of the output lines. Accordingly, in the case where the temperature sensitive element is exposed to a temperature change between a high temperature and ordinary temperature, compressive stress can be applied to the output lines by the covering member and the pads. Thus, the fixing force between the output lines and the pads can be increased.
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公开(公告)号：US20170108385A1
公开(公告)日：2017-04-20
申请号：US15284047
申请日：2016-10-03
Applicant: NGK Spark Plug Co., LTD.
Inventor： Toshiya Oya , Seiji Oya
IPC: G01K7/18
CPC classification number: G01K7/18 , G01K1/08 , G01K2205/04
Abstract: A temperature sensor includes: a temperature sensing element including a temperature sensing portion, electrical characteristics of which vary depending on temperature, and an electrode wire for outputting an electric signal from the temperature sensing portion to the outside; and a sheath core wire (signal wire) electrically connected to the electrode wire. The electrode wire is made of a platinum-rhodium alloy. The platinum-rhodium alloy is composed of 0.1 to 1.5 mol % of Sr, 22 to 40 mol % of Rh, and a remainder composed of Pt and unavoidable impurities. The platinum-rhodium alloy has a second-phase mainly composed of Sr and Pt whose precipitated grains are dispersed in a matrix phase. An area ratio of the second phase at a cross section is not greater than 25%.
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公开(公告)号：US09528960B2
公开(公告)日：2016-12-27
申请号：US14271904
申请日：2014-05-07
Applicant: NGK Spark Plug Co., LTD.
Inventor： Seiji Oya
IPC: G01N27/406 , G01N27/407
CPC classification number: G01N27/4071
Abstract: A cross-sectional shape of a gap of a gas sensor element has an end point A which is one of contact points at which the cross-sectional shape is in single-point contact with a virtual straight line parallel to a lamination direction, the one contact point being closest to one side of the laminated structure, an end point B which is one of the contact points closest to another side of the laminated structure, an end point C having the greatest separation from a straight line AB toward a solid electrolyte ceramic layer, and an end point D having the greatest separation from the straight line AB toward another ceramic layer. The distance H1 between the straight line AB and the end point C and the distance H2 between the straight line AB and the end point D satisfy 0.25≦H1/H2
Abstract translation: 气体传感器元件的间隙的截面形状具有终点A，该端点是横截面形状与平行于层叠方向的虚拟直线单点接触的接触点之一， 接触点最靠近层叠结构的一侧，端点B是最接近层叠结构的另一侧的接触点之一，与直线AB相对于固体电解质陶瓷具有最大分离的端点C 以及与直线AB相对于另一陶瓷层具有最大分离的终点D. 直线AB和终点C之间的距离H1以及直线AB与终点D之间的距离H2满足0.25≤H1/ H2 <1.00或1.00
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Patent Agency Ranking
公开(公告)号：US20140311906A1
公开(公告)日：2014-10-23
申请号：US14360030
申请日：2012-12-04
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Seiji Oya , Yuta Oishi
IPC: G01N27/407 , G01N27/41
CPC classification number: G01N27/4075 , G01N27/41
Abstract: Provided are: an electrode for a gas sensor formed as a porous electrode so as to stably allow reduction in electrode resistance for excellent low-temperature activity; and a gas sensor. The electrode (108, 110) for the gas sensor is adapted for use on a surface of a solid electrolyte body (109), which is predominantly formed of zirconia, and contains particles (2) of a noble metal or an alloy thereof, first ceramic particles (4) of stabilized zirconia or partially stabilized zirconia and second ceramic particles (6) of one or more selected from the group consisting of Al2O3, MgO, La2O3, spinel, zircon, mullite and cordierite, wherein the second ceramic particles are contained in an amount smaller than that of the first ceramic particles.
Abstract translation: 提供：形成为多孔电极的气体传感器电极，以便稳定地降低电极电阻以获得优异的低温活性; 和气体传感器。 用于气体传感器的电极（108,110）适于在主要由氧化锆形成的固体电解质体（109）的表面上使用，并且包含贵金属或其合金的颗粒（2），首先 稳定的氧化锆或部分稳定化的氧化锆的陶瓷颗粒（4）和选自Al2O3，MgO，La2O3，尖晶石，锆石，莫来石和堇青石的一种或多种的第二陶瓷颗粒（6），其中第二陶瓷颗粒包含 其量小于第一陶瓷颗粒的量。
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公开(公告)号：US10302503B2
公开(公告)日：2019-05-28
申请号：US15432419
申请日：2017-02-14
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Toshiya Oya , Seiji Oya
Abstract: A temperature sensor (1) including: a temperature sensing element (3) including a temperature sensing portion (4) having an electrical characteristic which varies depending on temperature, and an electrode wire (5) for outputting an electrical signal from the temperature sensing portion (4); and a sheath core wire (signal wire) (15) electrically connected to the electrode wire (5). The electrode wire (5) is formed from a platinum-palladium-rhodium alloy containing Pt, Pd and Rh. The alloy contains a total of 0.1 to 1.2 mol % of at least one alkaline-earth metal selected from the group consisting of Ca, Sr and Ba; 0.1 to 43.0 mol % of Pd; and 1.0 to 43.0 mol % of Rh, and the balance is Pt and incidental impurities. In the platinum-palladium-rhodium alloy, second-phase precipitated grains mainly containing Pt, Pd and the alkaline-earth metal are dispersed in a matrix phase.
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公开(公告)号：US09752936B2
公开(公告)日：2017-09-05
申请号：US14748423
申请日：2015-06-24
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hiroaki Nakanishi , Seiji Oya
CPC classification number: G01K1/08 , G01K2205/04
Abstract: In a temperature sensor, two seal members seal the open opposite ends of a cladding member (a forward end and a rear end), so that water absorption by an insulator of a sheath member can be restrained. The seal members are formed to have an insulation resistance equal to that of a conductor-fixing material. Therefore, even when the temperature sensor is used in a high-temperature environment, the insulation performance of the seal members does not become lower than the insulation performance of the conductor-fixing material, so that the formation of a leakage current path can be suppressed. According to the temperature sensor, the electrical property of a temperature sensitive element can be sensed accurately, and a reduction in the accuracy of temperature sensing can be restrained.
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公开(公告)号：US20150001077A1
公开(公告)日：2015-01-01
申请号：US14289685
申请日：2014-05-29
Applicant: NGK Spark Plug Co., Ltd.
Inventor： Seiji Oya , Yuta Oishi
IPC: G01N27/406 , H05B3/26 , H05B3/16
CPC classification number: G01N27/4067 , H05B3/265
Abstract: A heater which realizes both reduction of power consumption and improvement of durability against thermal shock. The heater includes a ceramic substrate formed of a ceramic material containing alumina as a main component; and a heat-generating resistor provided on the ceramic substrate and having a heat-generating portion and a lead portion, the heat-generating resistor containing, as a main component, one or more metals selected from the group consisting of platinum (Pt), palladium (Pd), and rhodium (Rh), or an alloy of any of these, and a ceramic material which is the same as the ceramic material of the ceramic substrate. In the heater, the ratio of the resistance of the heat-generating portion to the sum of the resistances of the heat-generating portion and the lead portion is 76 to 95%, and the heat-generating portion has a thickness of 1 to 6 μm.
Abstract translation: 一种实现功耗降低和耐热冲击耐久性提高的加热器。 加热器包括由含有氧化铝作为主要成分的陶瓷材料形成的陶瓷基板; 以及设在所述陶瓷基板上并具有发热部和引线部的发热电阻体，所述发热电阻体含有选自铂（Pt）， 钯（Pd）和铑（Rh），或这些中的任何一种的合金以及与陶瓷基板的陶瓷材料相同的陶瓷材料。 在加热器中，发热部的电阻与发热部与引线部的电阻之比为76〜95％，发热部的厚度为1〜6 μm。
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公开(公告)号：US10186355B2
公开(公告)日：2019-01-22
申请号：US15485355
申请日：2017-04-12
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Tomoki Yamaguchi , Shinji Ban , Hiroshi Watanabe , Yasuyuki Okimura , Hiroaki Nakanishi , Seiji Oya , Seiya Matsuda
Abstract: In a manufacturing method for a thermistor element (3) including: a thermistor portion (49) which is a sintered body formed from a thermistor material; and a pair of electrode wires (25) which are embedded in the thermistor portion (49) and at least one end portion of each of the electrode wires projects at an outer side of the thermistor portion (49), the resistance value of the thermistor element (3) is adjusted by performing a removal processing of removing a part of the thermistor portion (49).
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