EP0243254A1 - Derhpotentiometersensor für das Bestimmen der Position oder der Drehbewegung einer drehenden Welle - Google Patents

Derhpotentiometersensor für das Bestimmen der Position oder der Drehbewegung einer drehenden Welle Download PDF

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Publication number
EP0243254A1
EP0243254A1 EP87400885A EP87400885A EP0243254A1 EP 0243254 A1 EP0243254 A1 EP 0243254A1 EP 87400885 A EP87400885 A EP 87400885A EP 87400885 A EP87400885 A EP 87400885A EP 0243254 A1 EP0243254 A1 EP 0243254A1
Authority
EP
European Patent Office
Prior art keywords
rotating
shaft
sensor
housing
rotating part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87400885A
Other languages
English (en)
French (fr)
Other versions
EP0243254B1 (de
Inventor
Jean Fernand Simon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MCB SA
Original Assignee
MCB SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MCB SA filed Critical MCB SA
Priority to AT87400885T priority Critical patent/ATE47634T1/de
Publication of EP0243254A1 publication Critical patent/EP0243254A1/de
Application granted granted Critical
Publication of EP0243254B1 publication Critical patent/EP0243254B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/14—Adjustable resistors adjustable by auxiliary driving means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path

Definitions

  • the present invention relates to rotary potentiometer sensors for locating the position or angular displacement of a rotating shaft.
  • such sensors in order to determine the position or the displacement of a rotating shaft, in particular in order to copy this position or this displacement from a distance.
  • the accuracy of the indications provided by a potentiometric sensor on the position or the angular displacement of a rotating shaft is generally limited by the error of concentricity between this shaft and the sensor. Indeed, between the rotating part or rotor of the sensor and the shaft whose position or displacement we want to know, we must provide a constant velocity joint, which has the disadvantage of requiring space, complicating the mounting between the 'shaft and the sensor and to expose to dust and various projections this seal, especially in the case where the potentiometric sensor is placed under the hood of an automobile, hence premature wear; thought has been given to protecting the joint, but this requires additional parts which increase the cost and the bulk.
  • the invention aims to overcome the aforementioned drawbacks by arranging the seal between the shaft, the position or displacement of which is to be known, and the rotating part of the sensor, around the free end of said shaft, which reduces the bulk. , by accommodating said end of the shaft and the rotating joint itself inside the sensor housing, which ensures the pro tection of the joint at no additional cost.
  • the sensor according to the invention makes it possible, in particular in its application to automobiles, to obtain a very high angular precision, for example less than 1 ′, without precision machining and without requiring costly additional parts.
  • a sensor 1 intended to identify the position or movement of a rotating shaft 2, firstly comprises a housing 3 of generally cylindrical shape, one of the faces of which is closed by a cover 4 which is welded, crimped or glued to the body 3a of the housing, this cover 4 carrying the connector 5 of the sensor, and the other lateral face 6 of which is an integral part of the body 3a of the housing, carries a circular tube 7 which is surrounded by a flange circular 8 concentric with the tube 7 and disposed outside and at a distance therefrom, this flange 7 serving for centering the housing 3 in a bore 9 which is crossed by the shaft 2.
  • This rotating part 10 comprises a flat circular ring 11 and a tubular centering ring 12 which can rotate, with at least one play equal to the reasonably conceivable maximum concentricity error in the circular tube 7.
  • the rotation of the rotating part 10 by the shaft 2 is ensured for example by providing a portion inside the centering ring 12 plane 13 which cooperates with a corresponding flat portion 14 formed on the free end 2a of the shaft 2.
  • the rotating part 10 constitutes the first element of an Oldham seal which comprises two other rotating parts, namely an intermediate part 15 constituted by a flat circular crown and a second rotating part 16, which is a driven part, constitutes the rotor or rotating part of the sensor.
  • the part 16 comprises a flat circular crown 17 which carries, on the one hand, a tubular portion 18, which can rotate with gentle friction around the circular tube 7, and, on the other hand, a brush-carrying element 19, the brushes 20 of which rub against a conductive track 21 disposed on a part 22 of the internal lateral surface of the housing 3.
  • a helical return spring 26 is disposed, inside the housing 3, between the internal surface 27 of the side face 6 of the housing carrying the pipe 7 and the crown 17 of the second rotating part 16 to ensure the take-up of the play of rotation between the parts 2, 10, 15, 16 by exerting a return torque which ensures, when stopped or during the rotation of the shaft 2, the application of the planar portion 14 of the rotating shaft 2 on the internal flat portion 13 of the first rotating part 10, pins 24 on the notches 23a of the intermediate part 15, notches 23b on the pins 25 of the second rotating part 16.
  • the rotation of the shaft 2 causes, by the flat surfaces 13 and 14, the rotation of the first rotating part 10 whose pins 24, by cooperating with the notches 23a of the intermediate part 15, drive the latter in rotation, while that the cooperation of the pins 25 of the second rotating part 16 and the notches 23b ensures the rotational drive of the second rotating part 16. Therefore the rotation of the shaft 2 causes the rotation of the second in a constant velocity manner rotating part 16 and therefore of the brush holder 19 whose brushes 20 move on the fixed conductive track 21 carried by the housing 3.
  • the position of the brushes 20 on the conductive track 21 is processed in the connector 5 of the sensor and used as desired, in particular to ensure remote copying of the position or of the displacement of the rotating shaft 2.
EP87400885A 1986-04-25 1987-04-17 Derhpotentiometersensor für das Bestimmen der Position oder der Drehbewegung einer drehenden Welle Expired EP0243254B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87400885T ATE47634T1 (de) 1986-04-25 1987-04-17 Derhpotentiometersensor fuer das bestimmen der position oder der drehbewegung einer drehenden welle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8606049A FR2597970A1 (fr) 1986-04-25 1986-04-25 Capteur a potentiometre rotatif pour le reperage de la position ou du deplacement angulaire d'un arbre tournant
FR8606049 1986-04-25

Publications (2)

Publication Number Publication Date
EP0243254A1 true EP0243254A1 (de) 1987-10-28
EP0243254B1 EP0243254B1 (de) 1989-10-25

Family

ID=9334646

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400885A Expired EP0243254B1 (de) 1986-04-25 1987-04-17 Derhpotentiometersensor für das Bestimmen der Position oder der Drehbewegung einer drehenden Welle

Country Status (5)

Country Link
US (1) US4743882A (de)
EP (1) EP0243254B1 (de)
AT (1) ATE47634T1 (de)
DE (1) DE3760894D1 (de)
FR (1) FR2597970A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4870861A (en) * 1986-10-24 1989-10-03 Yazaki Corporation Liquid level indicator
CN113701622A (zh) * 2021-10-29 2021-11-26 成都宏明电子股份有限公司 一种用于测试角位移电位器回程差的同心定位装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5200747A (en) * 1990-12-13 1993-04-06 Bourns, Inc. Turn counting position sensor
US5460035A (en) * 1993-06-23 1995-10-24 Cts Corporation Bearing free spring free throttle position sensor
US5539373A (en) * 1993-11-08 1996-07-23 Cts Corporation Rotor structure for a position sensor
JP3724669B2 (ja) * 1996-08-30 2005-12-07 船井電機株式会社 位置検出スイッチ
US6691678B1 (en) * 2000-04-05 2004-02-17 Hitachi, Ltd. Throttle assembly for internal combustion engine, and throttle sensor
JP5692147B2 (ja) * 2012-04-18 2015-04-01 株式会社安川電機 回転電機

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042515A1 (de) * 1980-11-11 1982-05-19 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Elektronisches drehstellerelement
EP0185443A1 (de) * 1984-11-13 1986-06-25 General Motors Corporation Auf der Drehachse eines Ventils montierter Positionsfühler

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185443C (de) *
US4355293A (en) * 1979-10-22 1982-10-19 The Bendix Corporation Electrical resistance apparatus having integral shorting protection
US4430634A (en) * 1982-01-18 1984-02-07 Cts Corporation Rotary potentiometer with molded terminal package
US4616504A (en) * 1983-05-03 1986-10-14 Duncan Electronics Throttle position sensor
FR2560428B1 (fr) * 1984-02-28 1987-02-27 Renix Electronique Sa Potentiometre rotatif notamment de mesure de position angulaire

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042515A1 (de) * 1980-11-11 1982-05-19 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Elektronisches drehstellerelement
EP0185443A1 (de) * 1984-11-13 1986-06-25 General Motors Corporation Auf der Drehachse eines Ventils montierter Positionsfühler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4870861A (en) * 1986-10-24 1989-10-03 Yazaki Corporation Liquid level indicator
CN113701622A (zh) * 2021-10-29 2021-11-26 成都宏明电子股份有限公司 一种用于测试角位移电位器回程差的同心定位装置
CN113701622B (zh) * 2021-10-29 2022-03-18 成都宏明电子股份有限公司 一种用于测试角位移电位器回程差的同心定位装置

Also Published As

Publication number Publication date
FR2597970A1 (fr) 1987-10-30
DE3760894D1 (en) 1989-11-30
US4743882A (en) 1988-05-10
EP0243254B1 (de) 1989-10-25
ATE47634T1 (de) 1989-11-15

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