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41. 发明专利

JPH0552626A RESISTANCE ELEMENT 失效
公开(公告)号：JPH0552626A
公开(公告)日：1993-03-02
申请号：JP23396591
申请日：1991-08-21
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , ISHIGURO FUJIO , ISHIKAWA ZENJI
IPC分类号： G01F1/68 , G01F1/692 , G01P5/12 , H01C1/14
摘要： PURPOSE:To prevent falling-off or defective connection of a lead by heightening an adhesive property of platinic adhesive to the lead as well as to heighten detection accuracy or responsiveness of an element by diminishing heat conductivity in the lead, and preventing heat from fleeing outside through the lead. CONSTITUTION:A resistance element is formed of a bobbin 12 as a ceramic base body, a resistance thin film 18 arranged on its peripheral surface and platinic adhesive 16, and the resistance thin film 18 is stuck and fixed to the bobbin 12 by means of the platinic adhesive 16, and the resistance element contains also a lead 14 to be continued electrically to the resistance thin film 18. The lead 14 is constituted in such a way that a coating layer 24 consisting of alloy mainly composed of platinum is formed on the outer surface of a core wire 22 consisting of a material having heat conductivity lower than the platinum.

42. 发明专利

JPH04285818A THERMAL TYPE FLOW SENSOR 失效
公开(公告)号：JPH04285818A
公开(公告)日：1992-10-09
申请号：JP7405291
申请日：1991-03-13
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO
IPC分类号： G01F1/68 , G01F1/692 , G01F15/04 , G01P5/12
摘要： PURPOSE:To enable accurate detection of a flow rate being little dependent on temperature even when the temperature of a fluid changes, by selecting a temperature-compensating resistor and a heating resistor so that a resistance temperature coefficient value of the former resistor is made to be a lower value in a prescribed range than a resistance temperature coefficient of the latter. CONSTITUTION:In regard to a sensor which is provided in a fluid passage and has a heating resistor RH of platinum detecting the flow rate of a fluid and a temperature-compensating resistor RC of platinum detecting the temperature of the fluid, a resistance value of the resistor RH at 0 deg.C is made to be rHo (OMEGA) and a resistance value rH (OMEGA) of the resistor RC is expressed by a function of a temperature T( deg.C), rH=rHo(1+alphaT+betaT ). Besides, the resistance value of the resistor RC at 0 deg.C is made to be rCo (OMEGA) and the resistance value rC (OMEGA) of the resistor RC is expressed by a function of the temperature T( deg.C), rC= rCo(1+alphaT+betaT ). The value of a first-degree term coefficient alpha of the resistance temperature coefficient of the resistor RC is made to be lower than the value of the first-degree term coefficient alpha of the resistance temperature coefficient of the resistor RH.

43. 发明专利

JPH0437002A THIN FILM RESISTOR ELEMENT 失效
公开(公告)号：JPH0437002A
公开(公告)日：1992-02-07
申请号：JP14421490
申请日：1990-05-31
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , NAKAJIMA YUTAKA
IPC分类号： G01K7/18 , H01C7/00 , H01C7/02
摘要： PURPOSE:To obtain a thin film resistor having high durability and high reliability by forming a hole of a thin metal film from its surface to the surface of a ceramic carrier in size of 1 mum or more in terms of circular shape at an interval of 5 mum or less. CONSTITUTION:The air existing between a ceramic carrier 10 and a thin metal film 12 is discharged through the hole 20 of the film 12 by heating at the time of forming a glass coating layer 18, the film is advantageously sintered for the carrier, and adhering strength of the film to the carrier is effectively improved. The layer 18 is filled in the hole 20 of the film 12. The layer is brought into direct contact with the carrier having high affinity at a plurality of positions to be secured to effectively prevent repelling of the layer on the film, coating of the film is effectively performed, and the adhering strength of such a coating layer can be advantageously improved.

44. 发明专利

JPH01147331A PRESSURE DETECTOR 失效
公开(公告)号：JPH01147331A
公开(公告)日：1989-06-09
申请号：JP30610087
申请日：1987-12-03
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , MASE SHUNZO
IPC分类号： G01L9/04 , G01L9/00 , G01L19/06 , G12B17/02
摘要： PURPOSE:To prevent measurement accuracy from deteriorating owing to an electromagnetic wave by providing a shielding member which shields a resistance body electromagnetically from the outside space in the opening part of a housing closer to the outside space than the resistance body. CONSTITUTION:A ceramic-made diaphragm 20 which deforms corresponding with working pressure is supported by a cylindrical support 22. The resistance body 24 which constitutes a bridge circuit such as a Wheatstone bridge bridge is formed on one side of the diaphragm 20 and a thin-film type shield layer 26 is formed integrally on the other side. The metallic housing 28 is open in the cylinder of an internal combustion engine and the pressure in the cylinder is applied to the diaphragm 20 through the opening 36.

45. 发明专利

JPH01141329A PRESSURE SENSOR 失效
公开(公告)号：JPH01141329A
公开(公告)日：1989-06-02
申请号：JP30114787
申请日：1987-11-27
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , WATANABE HIROSHI , SHIBATA KAZUYOSHI
IPC分类号： G01L23/12 , G01L9/00 , G01L19/06 , G01L23/18 , G01L23/22
摘要： PURPOSE:To suppress a deformation caused by thermal stress of a diaphragm by evading direct exposure of the diaphragm against an external space in which a fluid to be measured exists, by a shielding member. CONSTITUTION:A diaphragm 10 and a supporting body 12 are contained in an inner hole 18 of a cylindrical metallic housing 16. An exposed surface 22 of the diaphragm 10 is covered with a bottom plate part 20, a cylinder wall part 24 and a plate metallic fixture 26 of a metallic housing 16, and between the exposed surface 22 of the diaphragm 10 and the plate metallic fixture 26, and between the bottom plate part 20 in the metallic housing 16 and the plate metallic fixture 26, a first interposed space 30 and a second interposed space 32 are formed, respectively. In this regard, a shielding member is constituted of the bottom plate part 20, the cylinder wall part 24 and the plate metallic fixture 26.

46. 发明专利

JPS63293432A STRAIN DETECTOR 失效
公开(公告)号：JPS63293432A
公开(公告)日：1988-11-30
申请号：JP13087887
申请日：1987-05-27
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , SHIBATA KAZUYOSHI , MASE SHUNZO
IPC分类号： G01L9/04 , G01B7/16 , G01L9/00
摘要： PURPOSE:To detect strain in a higher temperature atmosphere by using a material consisting of an excellent basic conductor component with specific high temperature resistance temperature characteristics and a specific dielectric material for a resistance body formed on a ceramic base. CONSTITUTION:A circuit pattern 4 is provided on the ceramic base 2 to form a pattern forming body 6. Then a filmy resistance body part 4a constituted by including the specific base conductor component in the specific dielectric material and a circuit pattern 4 consisting of a conductor part 4b made of a normal conductor material are formed on the calcined or uncalcined base 2. Namely, the resistance body part 4a which constitutes the pattern 4 contains one kind of compound powder selected in a group of Ti, Zr, etc. as basic components in the dielectric material made of specific glass, etc. Further, the resistance body part 4a is connected to external equipment, etc., from the base 2 by a conductor part 4b which does not vary in resistance value owing to the deformation of the base body 2. Thus, strain is detected in a higher temperature atmosphere.

47. 发明专利

JPS63292032A PRESSURE DETECTOR 失效
公开(公告)号：JPS63292032A
公开(公告)日：1988-11-29
申请号：JP12936087
申请日：1987-05-26
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO
IPC分类号： G01L9/04 , B28B1/00 , B28B7/34 , G01L9/00
摘要： PURPOSE:To improve breakdown strength and detecting accuracy, by baking a ceramic diaphragm, which is deformed in correspondence with pressure, and a ceramic fixing table, which fixes the periphery of the diaphragm as a unitary body. CONSTITUTION:All of the following parts comprise ceramic molded bodies: a plate shaped or film shaped molded ceramic member 2; a space forming member 4, in which a specified circular space 6 is formed at the central part; a plate shaped or block shaped, fixing-table forming member 8 having a through hole 10 at the central part. When these parts are laminated so as to form a unitary body, the space 6 and the through hole 10 are tightly filled with inserting bodies 12 and 14, which have the approximately same sizes as the respective space and holes and comprise sublimating material. The unitary laminated body is baked in accordance with an ordinary baking method. Thus a unitary baked body 20 is obtained. A bridge circuit is formed on one surface of a diaphragm part 16 of the baked body 20. The diaphragm part 16 is deformed in correspondence with pressure, which is applied on the part 16. Then, pressure to be measured can be detected based on the change in resistance value of a resistor due to the deformation.

48. 发明专利

JPS62262385A HEATING RESISTANCE UNIT 失效
公开(公告)号：JPS62262385A
公开(公告)日：1987-11-14
申请号：JP10317886
申请日：1986-05-07
申请人： NGK INSULATORS LTD
发明人： KIKUCHI TORU , YAJIMA YASUHITO
IPC分类号： H05B3/42 , G01F1/68 , G01F1/692 , H01C7/02 , H01C17/24 , H01C17/26 , H05B3/20

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