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公开(公告)号：US06672137B1
公开(公告)日：2004-01-06
申请号：US09869263
申请日：2001-09-27
IPC分类号： G01N900
CPC分类号： G01N27/4077 , G01N33/0039 , Y02A50/247
摘要： The oxygen sensor of the present invention has excellent durability capable of effectively preventing contamination with lead or the like for a detection electrode even in low temperature exhaust gases, and having stable response over a long period of time. The contamination preventive layer provided in the sensor device comprises composite powders having coarse powders covered therearound with fine powders, and hollows not filled with fine powders are scattered in gaps among the composite powders. Both the coarse and fine powders comprise ceramic powders. Further, it is particularly preferred that the ceramic powders are powders of a titania powder having a peak at 1 &mgr;m or less and a composite ceramic powder containing alumina such as spinel having a peak at 10 &mgr;m or more. The contamination preventive layer can be formed by coating a slurry containing ceramic powders of different specific surface areas, an organic binder and a solvent such as methanol on the surface of the electrode protection layer followed by drying.
摘要翻译： 本发明的氧传感器具有优异的耐久性，即使在低温废气中也能够有效地防止铅等检测电极的污染，并且长期稳定的响应。 设置在传感器装置中的防污染层包括具有细粉末的粗粉末的复合粉末，并且未填充有细粉末的中空部分散布在复合粉末之间的间隙中。 粗粉末和细粉末都包括陶瓷粉末。 此外，特别优选的是，陶瓷粉末是具有1mum以下的峰值的二氧化钛粉末的粉末，以及含有10个以上的峰值的尖晶石等的氧化铝的复合陶瓷粉末。 防污层可以通过在电极保护层的表面上涂布含有不同比表面积的陶瓷粉末，有机粘合剂和溶剂如甲醇的浆料，然后干燥而形成。
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公开(公告)号：US06544586B1
公开(公告)日：2003-04-08
申请号：US09249370
申请日：1999-02-12
申请人： Takayoshi Atsumi , Koji Shiono
发明人： Takayoshi Atsumi , Koji Shiono
IPC分类号： B05D512
CPC分类号： G01N27/4077
摘要： A gas sensor element includes a solid electrolyte layer having a plurality of projections formed on its outer surface, an inner electrode formed on the inner surface of the solid electrolyte layer, an outer electrode formed on the outer surface of the solid electrolyte layer, an outer electrode formed on the outer surface of the solid electrolyte layer and a spinel protection layer formed on the outer electrode for protection. The projections are formed on the outer surface of the solid electrolyte layer such that they are formed in a single layer; an area occupied by the projections accounts for 10% to 85% of the outer surface of the solid electrolyte layer and the distance between the neighboring projections is 5 &mgr;m to 300 &mgr;m. Thus, the outer electrode is formed on the solid electrolyte layer in such a manner as to penetrate into pits formed between neighboring projections and is thus strongly bonded to the solid electrolyte layer, thereby improving thermal durability. Also, since pores are hardly formed or are not formed at all between projections, a strong bond is established among the solid electrolyte layer, the outer electrode, and the protection layer, thereby improving durability against high temperature and high humidity.
摘要翻译： 气体传感器元件包括：固体电解质层，其外表面上形成有多个突起，形成在固体电解质层的内表面上的内电极，形成在固体电解质层的外表面上的外电极， 形成在固体电解质层的外表面上的电极和形成在外部电极上用于保护的尖晶石保护层。 突起形成在固体电解质层的外表面上，使得它们形成为单层; 突起所占的面积占固体电解质层外表面的10％〜85％，相邻突起之间的距离为5〜300μm。 因此，外部电极以固体电解质层形成为贯穿形成在相邻突起之间的凹坑的方式形成，因此牢固地结合到固体电解质层，从而提高热耐久性。 此外，由于孔几乎不形成，也不会形成在突起之间，所以在固体电解质层，外部电极和保护层之间形成牢固的结合，从而提高耐高温和高湿度的耐久性。
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公开(公告)号：US07254985B2
公开(公告)日：2007-08-14
申请号：US10609553
申请日：2003-07-01
CPC分类号： G01N27/4077 , G01N33/0039 , Y02A50/247
摘要： The oxygen sensor of the present invention has excellent durability capable of effectively preventing contamination with lead or the like for a detection electrode even in low temperature exhaust gases, and having stable response over a long period of time. The contamination preventive layer provided in the sensor device comprises composite powders having coarse powders covered therearound with fine powders, and hollows not filled with fine powders are scattered in gaps among the composite powders. Both the coarse and fine powders comprise ceramic powders. Further, it is particularly preferred that the ceramic powders are powders of a titania powder having a peak at 1 μm or less and a composite ceramic powder containing alumina such as spinel having a peak at 10 μm or more. The contamination preventive layer can be formed by coating a slurry containing ceramic powders of different specific surface areas, an organic binder and a solvent such as methanol on the surface of the electrode protection layer followed by drying.
摘要翻译： 本发明的氧传感器具有优异的耐久性，即使在低温废气中也能够有效地防止铅等检测电极的污染，长时间稳定的响应。 设置在传感器装置中的防污染层包括具有细粉末的粗粉末的复合粉末，并且未填充有细粉末的中空部分散布在复合粉末之间的间隙中。 粗粉末和细粉末都包括陶瓷粉末。 此外，特别优选的是，陶瓷粉末是具有1mum以下的峰值的二氧化钛粉末的粉末，以及含有10个以上的峰值的尖晶石等的氧化铝的复合陶瓷粉末。 防污层可以通过在电极保护层的表面上涂布含有不同比表面积的陶瓷粉末，有机粘合剂和溶剂如甲醇的浆料，然后干燥而形成。
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公开(公告)号：US20110239739A1
公开(公告)日：2011-10-06
申请号：US13133281
申请日：2010-02-22
CPC分类号： G01N27/4078
摘要： The present invention relates to improvement in the corrosion resistance of a weld joint between a metal shell and an outer casing. As a solution to this object, a metal shell 11 and an outer metal casing 16 are laser welded to each other via a weld joint 100 by irradiating a laser beam onto the entire circumference of a crimped area 90 in a circumferential direction of the outer metal casing 16. This laser welding operation is performed at a plurality of positions (two positions) displaced from each other in the direction of an axis O so that the weld joint 100 is formed with a front weld zone 110 and a rear weld zone 120.
摘要翻译： 本发明涉及金属壳与外壳之间的焊接接头的耐腐蚀性的提高。 作为该目的的解决方案，金属外壳11和外金属外壳16通过焊接接头100通过在外部金属的圆周方向上将激光束照射到卷曲区域90的整个圆周上而彼此激光焊接 该激光焊接操作在沿轴线O的方向彼此移位的多个位置（两个位置）处进行，使得焊接接头100形成有前焊接区域110和后焊接区域120。
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公开(公告)号：US06726819B2
公开(公告)日：2004-04-27
申请号：US09769393
申请日：2001-01-26
申请人： Takayoshi Atsumi , Satoshi Ishikawa
发明人： Takayoshi Atsumi , Satoshi Ishikawa
IPC分类号： G01N27407
CPC分类号： G01N27/4077
摘要： A gas sensor is provided which comprises a sensor element for detecting a component of a gas and a cup-shaped protector for covering a detecting section of the sensor element. The protector is dual-walled and have cup-shaped inner and outer protector members. The inner and outer protector members are constructed and arranged so that g1>g2 where g1 is the distance between an inner surface of a circumferential wall of the outer protector member and an outer surface of a circumferential wall of the inner protector member and g2 is the distance between an inner surface of a bottom wall of the outer protector member and an outer surface of a bottom wall of the inner protector member. The outer protector member has at the circumferential wall thereof a plurality of first gas holes. The inner protector member has at the circumferential wall thereof a plurality of second gas holes.
摘要翻译： 提供了一种气体传感器，其包括用于检测气体成分的传感器元件和用于覆盖传感器元件的检测部分的杯形保护器。 保护器是双壁的，并具有杯形内外保护件。 内保护构件和外保护构件被构造和布置成使得g1> g2，其中g1是外保护构件的周壁的内表面与内保护构件的周壁的外表面之间的距离，而g2是 外保护构件的底壁的内表面与内保护构件的底壁的外表面之间的距离。 外保护构件在其周向壁上具有多个第一气孔。 内部保护构件在其周向壁上具有多个第二气体孔。
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公开(公告)号：US20120036929A1
公开(公告)日：2012-02-16
申请号：US13205920
申请日：2011-08-09
申请人： Yasuhiro Fujita , Takayoshi Atsumi
发明人： Yasuhiro Fujita , Takayoshi Atsumi
IPC分类号： G01D11/24
CPC分类号： G01D11/245 , G01N27/4078
摘要： A gas sensor suppresses the deterioration of gas tightness caused by failure of a sealing material. The gas sensor includes: a housing; a sensor element arranged inside the housing; a sealing material filling a gap between the sensor element and the housing; an insulation member arranged on a proximal end side of the sealing material; and an annular metal ring arranged on a proximal end side of the insulation member. The sealing material, the insulation member and the metal ring are fixed under pressure by caulking from a proximal end side to a distal. A proximal-end facing surface of an inner peripheral portion of the metal ring is spaced apart from the caulking portion in an opposing region where an inner end of the caulking portion and the metal ring face each other in an opposed manner.
摘要翻译： 气体传感器抑制由密封材料的故障引起的气密性的劣化。 气体传感器包括：壳体; 布置在所述壳体内的传感器元件; 填充传感器元件和壳体之间的间隙的密封材料; 绝缘构件，设置在所述密封材料的基端侧; 以及布置在所述绝缘构件的近端侧的环形金属环。 密封材料，绝缘构件和金属环通过从近端侧到远端的铆接而在压力下固定。 金属环的内周部的近端面相对于铆接部在铆接部的内端与金属环相对的面相对的区域间隔开。
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公开(公告)号：US20090071231A1
公开(公告)日：2009-03-19
申请号：US12208473
申请日：2008-09-11
IPC分类号： G01N7/00
CPC分类号： G01N27/4077
摘要： A gas sensor has a sensor element, extending axially, that detects a particular gas component in a gas under measurement, a metal housing causing the end of the sensor element to protrude farther than the end thereof to expose it to the gas under measurement and that surrounds the periphery of the sensor element and an outer tube disposed at the rear end inside the metal housing and a seal member that is disposed farther to the rear than the detection element and also inside the rear end of the outer tube, and that has formed therein a atmosphere-introduction hole passing therethrough in the axial direction, the gas sensor further having a crimped part, formed in the outer tube, for the purpose of holding the seal member a hollow-cylindrical member in contact with the inner peripheral surface of the atmosphere-introduction hole so as to oppose the crimped part, and a metal filter that joins to the hollow-cylindrical member at the rear end of the hollow-cylindrical member and also farther to the rear than the crimped part.
摘要翻译： 气体传感器具有轴向延伸的传感器元件，其检测待测气体中的特定气体成分，金属壳体，使得传感器元件的端部比其末端更远地露出，以将其暴露于被测气体，并且 围绕传感器元件的周边和设置在金属壳体内的后端的外管和设置在比检测元件更靠后的位置并且还设置在外管的后端内的密封构件，并且形成 其中沿轴向通过的气氛导入孔，气体传感器还具有形成在外管中的压接部，用于将密封构件保持在与中空圆筒构件的内周面接触的位置 大气引入孔以与卷曲部分相对的金属过滤器，以及连接到中空圆柱形构件的后端处的中空圆柱形构件的金属过滤器，以及farth 呃到后面比卷曲部分。
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公开(公告)号：US09140585B2
公开(公告)日：2015-09-22
申请号：US13205920
申请日：2011-08-09
申请人： Yasuhiro Fujita , Takayoshi Atsumi
发明人： Yasuhiro Fujita , Takayoshi Atsumi
IPC分类号： G01D11/24 , G01N27/407
CPC分类号： G01D11/245 , G01N27/4078
摘要： A gas sensor suppresses the deterioration of gas tightness caused by failure of a sealing material. The gas sensor includes: a housing; a sensor element arranged inside the housing; a sealing material filling a gap between the sensor element and the housing; an insulation member arranged on a proximal end side of the sealing material; and an annular metal ring arranged on a proximal end side of the insulation member. The sealing material, the insulation member and the metal ring are fixed under pressure by caulking from a proximal end side to a distal. A proximal-end facing surface of an inner peripheral portion of the metal ring is spaced apart from the caulking portion in an opposing region where an inner end of the caulking portion and the metal ring face each other in an opposed manner.
摘要翻译： 气体传感器抑制由密封材料的故障引起的气密性的劣化。 气体传感器包括：壳体; 布置在所述壳体内的传感器元件; 填充传感器元件和壳体之间的间隙的密封材料; 绝缘构件，设置在所述密封材料的基端侧; 以及布置在所述绝缘构件的近端侧的环形金属环。 密封材料，绝缘构件和金属环通过从近端侧到远端的铆接而在压力下固定。 金属环的内周部的近端面相对于铆接部在铆接部的内端与金属环相对的面相对的区域间隔开。
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公开(公告)号：US08567231B2
公开(公告)日：2013-10-29
申请号：US13582952
申请日：2011-05-19
申请人： Hiroshi Isomura , Aya Sato , Takayoshi Atsumi
发明人： Hiroshi Isomura , Aya Sato , Takayoshi Atsumi
IPC分类号： G01N7/00
CPC分类号： G01N27/4067
摘要： A gas sensor includes an inner electrode formed on an inner surface of a base body. The inner electrode has an inner sensing portion formed in a gas contact inner region such that the inner sensing portion is located on the whole of a heat-facing area of the gas contact inner region facing a heating portion in a radial direction of the base body, a terminal contact portion formed in a rear end region such that the terminal contact portion is located in at least a part of the rear end region in a circumferential direction of the base body and a lead portion formed only on a part of the inner surface of the base body in the circumferential direction of the base body so as to connect the inner sensing portion and the terminal contact portion to each other.
摘要翻译： 气体传感器包括形成在基体的内表面上的内电极。 内部电极具有形成在气体接触内部区域中的内部感测部分，使得内部感测部分位于与基体的径向方向上的加热部分相对的气体接触内部区域的整个面向热的区域的整体上 形成在后端区域中的端子接触部分，使得端子接触部分位于沿着基体的圆周方向的后端区域的至少一部分中，以及仅形成在内表面的一部分上的引线部分 在基体的圆周方向上形成基体，以将内部感测部和端子接触部彼此连接。
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公开(公告)号：US07713393B2
公开(公告)日：2010-05-11
申请号：US11185681
申请日：2005-07-21
IPC分类号： G01N27/407
CPC分类号： G01N27/4075
摘要： A gas sensor having a gas sensor element which includes: a reference electrode; a solid electrolyte layer having oxygen ion conductivity; a detection electrode; and an electrode-protecting layer covering the detection electrode. The electrode-protecting layer is a porous body carrying catalytic metal, and includes: a detection electrode side portion having a catalytic metal loading ratio of more than 0% by weight and not more than 0.005% by weight; and a surface side portion provided closer to the outer surface of the electrode-protecting layer than the detection electrode side portion, the surface side portion having a catalytic metal loading ratio of 0.01% by weight or more.
摘要翻译： 一种具有气体传感器元件的气体传感器，包括：参考电极; 具有氧离子传导性的固体电解质层; 检测电极; 以及覆盖检测电极的电极保护层。 所述电极保护层是承载催化剂金属的多孔体，其特征在于，具有催化剂金属负载比大于0重量％且为0.005重量％以下的检测电极侧部分。 以及比所述检测电极侧部分更靠近所述电极保护层的外表面的表面侧部分，所述表面侧部分的催化金属负载比为0.01重量％以上。
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