FR2475228A1 - Target for rotational speed detector - comprises U=section ring attached to wheel circumference passing electromagnetic detector - Google Patents

Target for rotational speed detector - comprises U=section ring attached to wheel circumference passing electromagnetic detector Download PDF

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Publication number
FR2475228A1
FR2475228A1 FR8002099A FR8002099A FR2475228A1 FR 2475228 A1 FR2475228 A1 FR 2475228A1 FR 8002099 A FR8002099 A FR 8002099A FR 8002099 A FR8002099 A FR 8002099A FR 2475228 A1 FR2475228 A1 FR 2475228A1
Authority
FR
France
Prior art keywords
target
wheel
detector
monobloc
speed sensor
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
FR8002099A
Other languages
French (fr)
Other versions
FR2475228B1 (en
Inventor
Jacques Sire
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR8002099A priority Critical patent/FR2475228A1/en
Priority to ES1981271558U priority patent/ES271558Y/en
Publication of FR2475228A1 publication Critical patent/FR2475228A1/en
Application granted granted Critical
Publication of FR2475228B1 publication Critical patent/FR2475228B1/fr
Granted legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors

Abstract

The speed detector electromagnetically senses the movement of an apertured metal ring past a pickup coil. The metal ring is normally a part of the wheel, but this may be replaced by a profiled ring attached to the circumference of the wheel. The ring then has a U-section with one arm of the U being welded to the outer surface of the wheel. The base of the U lies in the plane of the wheel and the second arm forms the detected surface. This surface has a flared edge and also has a series of holes at regular intervals around the circumference. The detector is directed along a line perpendicular to the tangent of this surface. In an alternative arrangement the ring has an L-section, and has one limb of the L welded or screwed to one face of the wheel.

Description

Dispositif de cible pour capteur de vitesse
La présente invention due à la collaboration de Monsieur Jacques SIRE se rapporte à un dispositif de cible pour capteur de vitesse servant notamment à détecter une vitesse de rotation, le capteur de vitesse étant, par exemple, du type électromagnétique.Target device for speed sensor
The present invention due to the collaboration of Mr. Jacques SIRE relates to a target device for a speed sensor used in particular for detecting a rotational speed, the speed sensor being, for example, of the electromagnetic type.

Les cibles usuelles pour capteur de vitesse sont soit en tôle plane découpée, soit obtenues par taillage de pièces massives, suivant le profil nécessaire au fonctionnement du capteur. Ces types de réalisation sont croûteux et ne donnent pas toujours, en fabrication de serie, une qualité continue.The usual targets for speed sensors are either in cut sheet metal, or obtained by cutting solid parts, according to the profile necessary for the operation of the sensor. These types of realization are crusty and do not always give, in series production, continuous quality.

Le but de la présente invention est donc de réaliser un dispositif de cible pour capteur de vitesse comportant une cible monobloc montée directement sur l'élément tournant en face d'un capteur de vitesse disposé radialement.The object of the present invention is therefore to produce a target device for a speed sensor comprising a monobloc target mounted directly on the rotating element opposite a speed sensor arranged radially.

A cet effet, l'invention a pour objet un dispositif de cible pour capteur de vitesse comportant un capteur qui est disposé radialement en face d'une cible monobloc en tôle emboutie, cette cible possédant les perforations radiales voulues sur l'aile extérieure et entant solidaire d'un ensemble tournant.To this end, the subject of the invention is a target device for a speed sensor comprising a sensor which is arranged radially opposite a monobloc target made of stamped sheet metal, this target having the desired radial perforations on the outer wing and entering secured to a rotating assembly.

Suivant un mode de réalisation preféré de l'invention, la cible monobloc a une forme en L et elle est rendue solidaire de l'ensemble tournant à l'aide de vis ou par soudure.According to a preferred embodiment of the invention, the monobloc target has an L shape and it is made integral with the rotating assembly by means of screws or by welding.

Suivant un autre mode de réalisation préféré de l'invention, la cible monobloc a une forme en U et elle est rendue solidaire de l'ensemble tournant par soudure.According to another preferred embodiment of the invention, the monobloc target has a U shape and it is made integral with the rotating assembly by welding.

La cible monobloc peut avoir une nervure de raidissement extérieure ou intérieure,
Un tel dispositif suivant l'invention présente l'avantage de pouvoir être mont facilement sur une pièce tournante quelconque, telle qu'un volant moteur ou un convertisseur de couple. De plus, ce dispositif prévoyant de placer le capteur de vitesse radialement permet d'avoir une mesure satisfaisante qui est indépendante des déplacements axiaux de la cible.The monoblock target can have an external or internal stiffening rib,
Such a device according to the invention has the advantage of being able to be easily mounted on any rotating part, such as a flywheel or a torque converter. In addition, this device providing for placing the speed sensor radially makes it possible to have a satisfactory measurement which is independent of the axial displacements of the target.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description qui suit de modes de réalisation donnés à titre d'exemple, en référence aux dessins annexés sur lesquels - la figure 1 représente en coupe le dispositif de la cible pour capteur
selon l'invention dans le cas d'une cible en forme de U soudée ; - la figure 2 représente en coupe le dispositif de la cible pour capteur
selon l'invention dans le cas d'une cible en forme de L fixée par
vis ; - la figure 3 est une vue de la cible suivant la flèche III de la
figure 1 montrant les perforations radiales.Other characteristics and advantages of the present invention will emerge from the following description of embodiments given by way of example, with reference to the appended drawings in which - FIG. 1 represents in section the device of the target for sensor
according to the invention in the case of a welded U-shaped target; - Figure 2 shows in section the target device for sensor
according to the invention in the case of an L-shaped target fixed by
screws; - Figure 3 is a view of the target along arrow III of the
Figure 1 showing the radial perforations.

Le dispositif de cible pour capteur selon l'invention comprend un capteur (1) disposé radialement en face d'une cible monobloc qui est emboutie selon un premier mode de réalisation représenté sur la figure 1, une cible (2) monobloc emboutie présente une section très rigide en forme de U avec un bord retombé (3) à la périphérie qui est une nervure de raidissement extérieure. Cette cible (2).est fixée par soudure (4) sur la pièce tournante qui, dans le cas de la figure, est un convertisseur de couple (5).The target device for a sensor according to the invention comprises a sensor (1) arranged radially opposite a monoblock target which is stamped according to a first embodiment shown in FIG. 1, a monobloc stamped target (2) has a section very rigid U-shaped with a dropped edge (3) at the periphery which is an external stiffening rib. This target (2) is fixed by welding (4) on the rotating part which, in the case of the figure, is a torque converter (5).

Selon un second mode de réalisation représenté sur la figure 2, une cible (6) monobloc emboutie présente une section très rigide en forme de L avec un bord retombé (7) à la périphérie qui est une nervure de raidissement intérieure. Cette cible (6) est fixée par pincement entre un volant (8) et un mécanisme d'embrayage (9) à l'aide des vis de fixation (10) qui peuvent être celles du mécanisme d'embrayage (9). Cette cible en L pourrait aussi être soudée sur l'élément tournant. Dans tous les cas, la disposition radiale du capteur de vitesse permet d'avoir une mesure de cette vitesse qui est insensible aux déplacements axiaux de la partie tournante. According to a second embodiment shown in FIG. 2, a stamped monobloc target (6) has a very rigid L-shaped section with a dropped edge (7) at the periphery which is an internal stiffening rib. This target (6) is fixed by pinching between a steering wheel (8) and a clutch mechanism (9) using the fixing screws (10) which may be those of the clutch mechanism (9). This L-shaped target could also be welded to the rotating element. In all cases, the radial arrangement of the speed sensor makes it possible to have a measurement of this speed which is insensitive to the axial displacements of the rotating part.

Des perforations radiales (11) régulières ou non sont pratiquées sur le profil extérieur de la cible. Radial perforations (11), regular or not, are made on the external profile of the target.

L'invention n'est pas limitée aux exemples de réalisation décrits et représentés mais englobe également les variantes de réalisation et les équivalents techniques simples. The invention is not limited to the exemplary embodiments described and shown but also encompasses the variant embodiments and the simple technical equivalents.

Claims (6)

REVENDICATIONS 1. Dispositif de cible pour capteur de vitesse caractérisé en ce que le capteur (l) est disposé radialement en face d'une cible monobloc en tôle emboutie possédant les perforations radiales voulues sur l'aile extérieure, ladite cible étant solidaire d'un ensemble tournant.1. Target device for speed sensor characterized in that the sensor (l) is arranged radially opposite a monobloc target in pressed sheet metal having the desired radial perforations on the outer wing, said target being integral with an assembly turning. 2. Dispositif de cible pour capteur de vitesse selon la revendication 1 caractérisé en ce que la cible monobloc (6) a une forme en t rendue solidaire de l'ensemble tournant à l'aide de vis (10).2. Target device for speed sensor according to claim 1 characterized in that the monobloc target (6) has a T shape made integral with the rotating assembly by means of screws (10). 3. Dispositif de cible pour capteur de vitesse selon la revendication 1 caractérisé en ce que la cible monobloc (2) a une forme en U rendue solidaire de l'ensemble tournant par soudure (4). 3. Target device for speed sensor according to claim 1 characterized in that the monobloc target (2) has a U-shape made integral with the rotating assembly by welding (4). 4. Dispositif de cible pour capteur de vitesse selon l'une quelconque des revendications précédentes caractérisé en ce que la cible monobloc a une nervure de raidissement extérieure (3).4. Target device for speed sensor according to any one of the preceding claims, characterized in that the monobloc target has an external stiffening rib (3). 5. Dispositif de cible pour capteur de vitesse selon la revendication 2 caractérisé en ce que la cible monobloc (6) a une nervure de raidissement intérieure (7).5. Target device for speed sensor according to claim 2 characterized in that the monobloc target (6) has an internal stiffening rib (7). 6. Dispositif de cible pour capteur de vitesse selon la revendication 2 caractérIsé en ce que la cible monobloc est rendue solidaire de l'ensemble tournant par soudure. 6. Target device for speed sensor according to claim 2 characterized in that the monobloc target is made integral with the rotating assembly by welding.
FR8002099A 1980-01-31 1980-01-31 Target for rotational speed detector - comprises U=section ring attached to wheel circumference passing electromagnetic detector Granted FR2475228A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8002099A FR2475228A1 (en) 1980-01-31 1980-01-31 Target for rotational speed detector - comprises U=section ring attached to wheel circumference passing electromagnetic detector
ES1981271558U ES271558Y (en) 1980-01-31 1981-01-30 TARGET DEVICE FOR SPEED SENSOR.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8002099A FR2475228A1 (en) 1980-01-31 1980-01-31 Target for rotational speed detector - comprises U=section ring attached to wheel circumference passing electromagnetic detector

Publications (2)

Publication Number Publication Date
FR2475228A1 true FR2475228A1 (en) 1981-08-07
FR2475228B1 FR2475228B1 (en) 1983-07-18

Family

ID=9238064

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8002099A Granted FR2475228A1 (en) 1980-01-31 1980-01-31 Target for rotational speed detector - comprises U=section ring attached to wheel circumference passing electromagnetic detector

Country Status (2)

Country Link
ES (1) ES271558Y (en)
FR (1) FR2475228A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3416316A1 (en) * 1983-05-04 1987-05-07 Luk Lamellen & Kupplungsbau FRICTION CLUTCH
DE19533671A1 (en) * 1995-09-13 1997-03-20 Fichtel & Sachs Ag Friction clutch with a pulse generator
GB2385107A (en) * 1998-11-05 2003-08-13 Luk Lamellen & Kupplungsbau Folded element with ignition timing markings
DE4340175B4 (en) * 1992-12-07 2013-02-21 Schaeffler Technologies AG & Co. KG Device for compensating torsional impacts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2093932A1 (en) * 1970-06-01 1972-02-04 Bendix Corp
FR2144684A1 (en) * 1971-07-02 1973-02-16 Bendix Corp
US3946482A (en) * 1973-11-23 1976-03-30 Kelsey-Hayes Company Method of manufacturing a wheel speed sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2093932A1 (en) * 1970-06-01 1972-02-04 Bendix Corp
FR2144684A1 (en) * 1971-07-02 1973-02-16 Bendix Corp
US3946482A (en) * 1973-11-23 1976-03-30 Kelsey-Hayes Company Method of manufacturing a wheel speed sensor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3416316A1 (en) * 1983-05-04 1987-05-07 Luk Lamellen & Kupplungsbau FRICTION CLUTCH
DE4340175B4 (en) * 1992-12-07 2013-02-21 Schaeffler Technologies AG & Co. KG Device for compensating torsional impacts
DE19533671A1 (en) * 1995-09-13 1997-03-20 Fichtel & Sachs Ag Friction clutch with a pulse generator
DE19533671C2 (en) * 1995-09-13 1998-09-24 Mannesmann Sachs Ag Friction clutch with a pulse generator
GB2385107A (en) * 1998-11-05 2003-08-13 Luk Lamellen & Kupplungsbau Folded element with ignition timing markings
GB2385107B (en) * 1998-11-05 2003-12-24 Luk Lamellen & Kupplungsbau Component for connection to a crankshaft

Also Published As

Publication number Publication date
FR2475228B1 (en) 1983-07-18
ES271558U (en) 1983-10-01
ES271558Y (en) 1984-04-01

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