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1. 发明专利

DE4130390A1 未知
公开(公告)号：DE4130390A1
公开(公告)日：1992-03-19
申请号：DE4130390
申请日：1991-09-12
申请人： NGK INSULATORS LTD , KOA CORP
发明人： KITABYASHI MOTOI , MIYAJIMA SOYA , YAJIMA YASUHITO , OGASAWARA TAKAYUKI
IPC分类号： H01C1/14 , H01C1/146 , H01C7/00 , H01C7/02 , H01C17/06
摘要： A resistor element including a cylindrical ceramic support having two openings open on longitudinally opposite end faces thereof, an electrically resistive layer formed on an outer circumferential surface, a pair of electrical conductors for connecting the electrically resistive layer to an external circuit, each of which has an end portion inserted into a corresponding one of the openings of the ceramic support, and an electrically conductive adhesive filling each opening of the ceramic support, for securing the end portion of the corresponding conductor to the ceramic support. The electrically resistive layer has two integrally formed extensions for covering the opposite end faces of the ceramic support, respectively, and respective inner wall surfaces of the openings of the ceramic support. The conductors are electrically connected to the extensions of the resistive layer by the electrically conductive adhesive filling each opening of the ceramic support.

2. 发明专利

DE4130390C2 未知
公开(公告)号：DE4130390C2
公开(公告)日：1995-03-16
申请号：DE4130390
申请日：1991-09-12
申请人： NGK INSULATORS LTD , KOA CORP
发明人： KITABAYASHI MOTOI , MIYAJIMA SOYA , YAJIMA YASUHITO , OGASAWARA TAKAYUKI
IPC分类号： H01C1/14 , H01C1/146 , H01C7/00 , H01C7/02 , H01C17/06
摘要： A resistor element including a cylindrical ceramic support having two openings open on longitudinally opposite end faces thereof, an electrically resistive layer formed on an outer circumferential surface, a pair of electrical conductors for connecting the electrically resistive layer to an external circuit, each of which has an end portion inserted into a corresponding one of the openings of the ceramic support, and an electrically conductive adhesive filling each opening of the ceramic support, for securing the end portion of the corresponding conductor to the ceramic support. The electrically resistive layer has two integrally formed extensions for covering the opposite end faces of the ceramic support, respectively, and respective inner wall surfaces of the openings of the ceramic support. The conductors are electrically connected to the extensions of the resistive layer by the electrically conductive adhesive filling each opening of the ceramic support.

3. 发明专利

JPH04123402A THIN FILM RESISTANCE BODY 失效
公开(公告)号：JPH04123402A
公开(公告)日：1992-04-23
申请号：JP24567690
申请日：1990-09-13
申请人： KOA CORP , NGK INSULATORS LTD
发明人： KITABAYASHI MOTOI , MIYAJIMA TAKAYA , YAJIMA YASUHITO , OGASAWARA TAKAYUKI
IPC分类号： H01C1/14 , H01C1/146 , H01C7/00 , H01C7/02 , H01C17/06
摘要： PURPOSE:To prevent generation of cracks at the conductive bonding agent area by integrally forming a metal thin film under the condition that the film enters the internal surface of an aperture from the external surface of ceramic substrate and fixing the end portion of metal lead wire to the base material with the conductive bonding agent filling the aperture. CONSTITUTION:Under the condition of being inserted for the predetermined length into an aperture 14a of a bobbin 14, a part of a lead wire 18 inserted into the aperture 14a of bobbin 14 is bonded to the bobbin 14 with predetermined conductive bonding agent 20 and is subjected to heat treatment for the purpose of fixing to the bobbin 14. A thin film resistance body 12 allows the lead wire 18 to be fixed to the bobbin 14 within the aperture 14a of bobbin 14. Therefore, a small amount of bonding agent is required for connection of a resistance body thin film 16 and the lead wire 18 and moreover since the conductive agent 20 is reinforced at the edge of aperture of bobbin 14, crack or deformation is never generated therein.

4. 发明专利

DE3839515C2 未知
公开(公告)号：DE3839515C2
公开(公告)日：1995-03-16
申请号：DE3839515
申请日：1988-11-23
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , WATANABE YASUSHI , SHIBATA KAZUYOSHI
IPC分类号： G01L23/12 , G01L9/00 , G01L19/06 , G01L23/18 , G01L23/22 , G01L9/02 , G01L7/08 , G01L9/12

5. 发明专利

DE69201177D1 未知
公开(公告)号：DE69201177D1
公开(公告)日：1995-02-23
申请号：DE69201177
申请日：1992-08-19
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： A resistor element for determining a parameter, including a ceramic support (12), an electrically resistive body (18) formed on the ceramic support, at least one lead wire (14) electrically connected to the electrically resistive body (18), and an adhesive (16) containing platinum for securing the lead wire(s) to the ceramic support. Each lead wire (14) includes a wire rod (22) having a lower thermal conductivity than platinum, and a covering layer (24) which covers the wire rod and is formed of an alloy including platinum as a major component. This provides low thermal conductivity of the wire (14) and good adhesion of the wire (14) to the adhesive (16).

6. 发明专利

DE4207188C2 未知
公开(公告)号：DE4207188C2
公开(公告)日：1996-09-12
申请号：DE4207188
申请日：1992-03-06
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO
IPC分类号： G01F1/68 , G01F1/692 , G01F15/04 , G01P5/12 , G01K13/00
摘要： A thermal type of flow rate sensor includes heat-generating and temperature-compensating resistors RH and RC which are located within a fluid passage to measure the flow rate of the fluid. The linear term coefficient, alpha , of the temperature coefficient of resistance of RC is made smaller than that of RH, whereby any temperature-compensating electric circuit and circuit control can all be dispensed with and the flow rate of a fluid can be precisely detected over a wide temperature range.

7. 发明专利

DE4207188A1 Air intake sensor for IC engine - has platinum@ heat generating resistor and platinum@ temp. compensating resistor in same flow channel 未知
公开(公告)号：DE4207188A1
公开(公告)日：1992-10-08
申请号：DE4207188
申请日：1992-03-06
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： When the resistance value (rH in ohms) of the heat generating resistor (RH) satisfies the following function of the temp. (T is deg.C): rH=rHO(1+alphaT+beta T squared), where rHO is the resistance value in ohms of the resistor (RH) at 0 deg.C, and when the resistance value (RC in ohms) of the compensation resistor (RC) satisfies the following function of the temp. (T in deg.C).: rC= rCO(1+alphaT+beta T squared), where rCO is the resistance value of the resistor (RC) in ohms at 0 deg.C, the linear expression coefft. (alpha) of the temp. coefft. of the effective resistance of the compensation resistor is below that of the heat generating resistor. ADVANTAGE - Requires no temp.-compensating electrical circuit or circuit regulation and air flow can be accurately registered over wide temp. range by thermal type sensor.

8. 发明专利

DE3817695A1 未知
公开(公告)号：DE3817695A1
公开(公告)日：1988-12-08
申请号：DE3817695
申请日：1988-05-25
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO
IPC分类号： G01L9/04 , B28B1/00 , B28B7/34 , G01L9/00 , G01L9/02
摘要： A pressure sensor including a ceramic diaphragm which is deformable in response to a pressure applied thereto, a ceramic base associated with a periphery of the ceramic diaphragm, for supporting the ceramic diaphragm, and at least one resistor formed on the ceramic diaphragm. Resistance value of the resistor are adapted to vary depending upon a magnitude of deformation of the ceramic diaphragm, and thereby represent the pressure applied to the ceramic diaphragm. The ceramic diaphragm and the ceramic base consist of a co-fired body obtained by co-firing an unfired diaphragm member and an unfired base member.

9. 发明专利

DE69327482T2 未知
公开(公告)号：DE69327482T2
公开(公告)日：2000-06-15
申请号：DE69327482
申请日：1993-03-16
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , ISHIGURO FUJIO , NAKAJIMA HIROSHI
IPC分类号： G01F1/68 , G01F1/692 , H01C7/02
摘要： A resistor for a thermal type of flowmeter includes a ceramic substrate (21), a thin platinum film (22) formed on the surface of the ceramic substrate, and lead wires (20) for connecting the thin platinum film with an external circuit, and is located in a fluid to detect its flow rate. When the resistance value, R ( OMEGA ), of the resistor for a thermal type of flowmeter is expressed in terms of a function of temperature, T ( DEG C): where R0 is the resistance value in OMEGA of the resistor for a thermal type of flowmeter at 0 DEG C, alpha is the first-order term coefficient of the temperature coefficient of resistance, and beta is the second-order term coefficient of the temperature coefficient of resistance, the value of the first-order term coefficient, alpha , of the temperature coefficient of resistance is at least 3,650 ppm/ DEG C. A deviation in the temperature coefficient of resistance can be effectively reduced or eliminated, making circuit regulation easier.

10. 发明专利

DE69327482D1 未知
公开(公告)号：DE69327482D1
公开(公告)日：2000-02-10
申请号：DE69327482
申请日：1993-03-16
申请人： NGK INSULATORS LTD
发明人： YAJIMA YASUHITO , ISHIGURO FUJIO , NAKAJIMA HIROSHI
IPC分类号： G01F1/68 , G01F1/692 , H01C7/02
摘要： A resistor for a thermal type of flowmeter includes a ceramic substrate (21), a thin platinum film (22) formed on the surface of the ceramic substrate, and lead wires (20) for connecting the thin platinum film with an external circuit, and is located in a fluid to detect its flow rate. When the resistance value, R ( OMEGA ), of the resistor for a thermal type of flowmeter is expressed in terms of a function of temperature, T ( DEG C): where R0 is the resistance value in OMEGA of the resistor for a thermal type of flowmeter at 0 DEG C, alpha is the first-order term coefficient of the temperature coefficient of resistance, and beta is the second-order term coefficient of the temperature coefficient of resistance, the value of the first-order term coefficient, alpha , of the temperature coefficient of resistance is at least 3,650 ppm/ DEG C. A deviation in the temperature coefficient of resistance can be effectively reduced or eliminated, making circuit regulation easier.

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