WO2007074250A1 - Device for protecting a sensor - Google Patents

Device for protecting a sensor Download PDF

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Publication number
WO2007074250A1
WO2007074250A1 PCT/FR2006/051198 FR2006051198W WO2007074250A1 WO 2007074250 A1 WO2007074250 A1 WO 2007074250A1 FR 2006051198 W FR2006051198 W FR 2006051198W WO 2007074250 A1 WO2007074250 A1 WO 2007074250A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
zone
protection device
cable
gripping
Prior art date
Application number
PCT/FR2006/051198
Other languages
French (fr)
Inventor
Pierre Garnier
Original Assignee
Renault S.A.S
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 S.A.S filed Critical Renault S.A.S
Publication of WO2007074250A1 publication Critical patent/WO2007074250A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors

Definitions

  • the present invention relates to the field of wheel sensors for motor vehicles, and more particularly relates to devices for protecting these sensors against wear and pollution that can attack them.
  • these sensors can be worn by abrasion due to the infiltration of particles between the magnetic track of the bearing and the sensor.
  • This abrasion and degradation are, in particular, increased when the sensor is mounted on a sensor holder inserted in a groove of the knuckle, said groove then constituting a preferred passageway and retention of the abrasive particles (silica particles , in particular, in a non-exhaustive manner).
  • a known solution for limiting this type of drawback is to produce "pencil" type sensors intended to be directly inserted into the knuckle, by screwing or clipping, for example, without the use of a sensor holder: a passageway pollution and dust likely to degrade the performance of the sensor is thus removed. Other infiltration paths of any particles remain, however, especially at the connection interface of the sensor and the knuckle.
  • the object of the present invention is to propose a device making it possible to limit as far as possible the infiltration paths of particles and dust in the zone of connection of the sensor to the knuckle of the wheel.
  • the object of the invention is a protective device for a sensor of a motor vehicle intended to be directly placed on the stub axle of a wheel of the vehicle, said protective device being movable between a position of rest in which it is remote from the connection area of the sensor to the knuckle, and a working position in which, said sensor being mounted on said knuckle, it is placed at the vicinity of said connection zone, characterized in that it comprises, at least:
  • the senor comprises a gripping zone, and the receiving and locking zone of the protection device according to the invention is able to cooperate with said gripping zone.
  • the zone for receiving and blocking the protection device according to the invention further comprises, on one of its faces, an orifice through which the sensor cable is able to be threaded, as well as, on its face opposite to the face on which is formed said orifice, an opening whose inner shape is substantially complementary to the outer shape of the gripping area of the sensor: the protection device according to the invention forms more, between its face comprising said orifice and its face having said opening, a sleeve whose shapes and internal dimensions are substantially complementary to the shapes and external dimensions of said gripping area of the sensor.
  • the two tabs of the protective device according to the invention extend, substantially perpendicularly to one another, from the face of the receiving zone of said windshield on which is formed the opening mentioned above: they also extend on either side of said face, and, advantageously, a set of slots is provided at the intersection of said tabs with each other and with the receiving zone of the protection device according to the invention, of such so that said tongues can move independently of each other, on the one hand, and that the parts of said tongues located on either side of said receiving zone can also move independently of each other.
  • the gripping zone of the sensor is engaged in the receiving zone of the protection device according to the invention, and said at least two substantially flexible tongues are adapted to cooperate with the faces of the knuckle support situated in the vicinity of the zone of connection of the sensor on said knuckle, so as to define, around said sensor installed on said knuckle, a substantially closed volume .
  • the protection device is threaded on the cable of the sensor, before said sensor is mounted on said cable, and can slide along said cable between its rest position and its position. job .
  • the protection device according to the invention is threaded onto the sensor cable, and secured to said sensor.
  • the reception zone of the protection device according to the invention and the gripping zone of the sensor are combined.
  • the protection device according to the invention is provided with at least one slot allowing it to be placed around the sensor cable once said sensor is installed on the stub axle.
  • FIGS. 1 and 2 are diagrammatic perspective views, according to different angles of view, of a part of a stub axle equipped with a sensor and a protective device according to one embodiment of the invention, in the rest position of said protection device
  • FIGS. 3 and 4 are schematic views of perspective of a portion of a stub axle and a protective device according to the invention, in its working position, according to different angles of view.
  • a sensor 1 in order to optimize the driving of a motor vehicle, and in particular to limit the wheel lock phenomena, for example during an emergency braking, a sensor 1 can be placed on the knuckle 2 of a wheel of said vehicle: the sensor 1 is connected by a cable 3 to the control device of the various driving parameters of the vehicle.
  • the invention proposes placing, around said connection zone, a protection device 4 whose forms and mode of operation will now be described in more detail.
  • the protection device 4 is movable between a rest position, represented by FIGS. 1 and 2, in which it is remote from the connection zone of the sensor 1 to the door 2, and a working position, represented by FIGS. 3 and 4, in which it protects the connection zone of the sensor 1 to the stub axle 2.
  • the sensor 1, placed at one end of the cable 3, comprises a gripping zone 5 provided with at least one element 51 making it easier to grip manually or mechanically when it is connected to the rocket carrier 2: according to the method of embodiment shown in Figures 1 and 2, the gripping zone 5 extends from the end of the cable 3 on which the sensor 1 is mounted in the direction of said cable 3: it substantially envelops said end of said cable 3 , and is provided with two plates 51 and 51 'diametrically opposite with respect to said cable 3, substantially concave and oriented opposite the cable 3, intended to facilitate manual gripping of the sensor 1.
  • the gripping zone 5 is made in a substantially elastic plastic material.
  • the gripping zone 5 can also be reported, for example by overmolding, on the sensor 1 itself or on the end of the cable 3 on which it is mounted.
  • the protection device 4 made of a flexible plastic material, preferably but in a non-limiting manner in a Elastomeric material, comprises mainly, as mentioned above, a receiving and blocking zone 6, and at least two substantially flexible tabs 7 and 8 whose forms and functions will be detailed later.
  • the receiving zone 6 forms a housing adapted to receive the gripping zone 5 of the sensor 1.
  • An orifice 61 whose diameter is slightly greater than the diameter of the cable 3, is formed on a portion 62 of the receiving zone 6, in such a way that the protective device 4 can be threaded through said orifice 61 onto said cable 3.
  • the receiving zone 6 of the protection device 4 comprises an opening 63 , whose inner dimensions are substantially equal to the outer dimensions of the gripping zone 5 of the sensor 1, by which the receiving zone 6 is able to be engaged around said gripping zone 5 of the sensor 1. Between the opening 63 and the portion 62 provided with the orifice 61, the receiving zone 6 of the protection device 4 substantially forms a sleeve 64 whose shapes and internal dimensions are substantially complementary to the shapes and external dimensions 1 of the gripping zone 5 of the sensor 1.
  • the receiving zone 6 is substantially in the shape of a rectangular parallelepiped, one face of which is pierced with the orifice 61, and whose face Opposite form the opening 63: according to other embodiments, the shape of the receiving zone 6 may be any, the only requirement being that it is able to cooperate with the outer forms of the gripping zone 5 of the sensor 1.
  • the tongue 7 extends, from the sleeve 64 of the receiving zone 6, substantially in the extension of the surface delimited by the opening 63, on either side of said opening 63.
  • the connection zone 9 of the tongues 7 and 8 between them and with the sleeve 64 has two slots 10 and 10 'allowing independent movements of said tabs 7 and 8 relative to each other and relative to the sleeve 64 of the receiving zone 6 of the protection device 4.
  • the side of the tongue 8 opposite to the connection zone 9 further comprises a cutout 11, whose role will be specified later, substantially curved towards the sleeve 64.
  • the protection device 4 is substantially symmetrical, the tongues 7 and 8 being, in particular, symmetrical with respect to the receiving zone 6: such an embodiment, if it simplifies the manufacture of the protection device 4,
  • the tabs 7 and 8 can, without inconvenience to the invention, not be symmetrical with respect to the reception zone 6.
  • said at least one element 51 of the gripping zone 5 of the sensor 1 allows, by its shape and its mechanical characteristics, a locking of the sensor 1 within said volume.
  • the external dimensions of the gripping zone 5 increased by the plates 51 and 51 ' are thus slightly greater than the internal dimensions of the sleeve 64: the receiving zone 6 of the protection device 4 thus deforms. slightly at the time of engagement of the gripping zone 5 of the sensor 1, to allow the passage of said plates 51 and 51 ', which then allow, by their shape, a locking of the sensor 1 in said receiving zone 6.
  • the protection device 4 being in its working position, the tongues 7 and 8 are then in contact with the neighboring surfaces of the knuckle carrier 2, as shown in FIGS. 3 and 4: their flexibility, as well as their aptitude, thanks to the slots 10 and 10 'previously described, to move independently of one another, then allow their deformation so as to match the shape of said surfaces.
  • the tongue 7 thus cooperates by plating with the surface 11 of the knuckle 2 to which is connected the sensor 1, on both sides of said sensor 1; and the tongue 8 cooperates by plating with the surface 12 of the knuckle 2 on an element of which is mounted the transmission bowl 13, the cutout 11 formed on said tongue 8 then allowing it to adapt to the shape said element on which is mounted said transmission bowl 13.
  • the sensor 1 is thus taken in a housing delimited by, on the one hand, the surface 11 of the knuckle carrier 2, and on the other hand, the tongue 8, the sleeve 64, and the surface 62 of the protection 4 according to the invention.
  • the material of the protection device 4 according to the invention will be chosen such that its hardness allows the tongues 7 and 8 of the protection device 4 to exert pressure on the surfaces 11 and 12 of the knuckle carrier 2, thus ensuring an optimal closure of said housing, and preventing any infiltration of particles or dust in the vicinity of the sensor 1.
  • the protection device 4 may, as just described, be threaded onto the cable 3 before mounting the sensor 1 at the end thereof, or put in place. place on said cable 3 once the sensor 1 mounted at the end thereof.
  • the protective device 4 may be slidably mounted on the cable 3, between its rest position and its working position, as just described.
  • the protective device 4 may be integral with the gripping zone 5 of the sensor 1, or, according to another alternative embodiment, be made in one piece with said sensor 1, the gripping zone 5 then being removed and replaced by the sleeve 64, the outer shapes and dimensions will then be adapted to allow easy manual gripping or mechanical assembly.
  • a slot 14 shown in broken lines in FIG.
  • the slot 14 may be formed according to a plane of symmetry of the protection device 4: according to other embodiments, the slot 14 may be placed in any way on the protection device 4 , the only imperative being that it delimits two parts whose separation will allow its insertion around the cable 3.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

Protecting device (4) for a sensor (1) of a motor vehicle intended to be positioned directly on the stub axle (2) of a wheel of the said vehicle, the protecting device (4) being able to be moved between a rest position in which it is distant from the region of connection of the sensor (1) to the stub axle (2) and a working position in which, with the sensor (1) mounted on the stub axle (2), it is positioned near the said region of connection, characterized in that it comprises at least: - a region (6) for accepting and immobilizing the said sensor (1), - two substantially flexible tabs (7), (8) intended, when the protecting device (4) is in the work position, to surround the region of connection of the sensor (1) to the stub axle (2).

Description

Dispositif de protection d' un capteur Protection device of a sensor
La présente invention se rapporte au domaine des capteurs de roues pour véhicules automobiles, et concerne plus particulièrement des dispositifs de protection de ces capteurs vis à vis de l'usure et de la pollution pouvant les agresser.The present invention relates to the field of wheel sensors for motor vehicles, and more particularly relates to devices for protecting these sensors against wear and pollution that can attack them.
En effet, selon leur mode de fixation au porte-fusée de la roue du véhicule, ces capteurs peuvent être usés par abrasion due à l'infiltration de particules entre la piste magnétique du roulement et le capteur. Cette abrasion et ces dégradât ions sont , en particulier, augmentées lorsque le capteur est monté sur un porte-capteur inséré dans une gorge du porte-fusée, ladite gorge constituant alors une voie de passage et de rétention privilégiée des particules abrasives (particules de silice, notamment, de manière non exhaustive).Indeed, according to their method of attachment to the wheel carrier of the vehicle wheel, these sensors can be worn by abrasion due to the infiltration of particles between the magnetic track of the bearing and the sensor. This abrasion and degradation are, in particular, increased when the sensor is mounted on a sensor holder inserted in a groove of the knuckle, said groove then constituting a preferred passageway and retention of the abrasive particles (silica particles , in particular, in a non-exhaustive manner).
Une solution connue pour limiter ce type d'inconvénients est de réaliser des capteurs de type "crayon" destinés à être directement insérés dans le porte- fusée, par vissage ou clipsage, par exemple, sans utilisation de porte-capteur : une voie de passage des pollutions et poussières susceptibles de dégrader les performances du capteur est ainsi supprimée. D'autres voies d'infiltration d'éventuelles particules subsistent toutefois, en particulier au niveau de l'interface de raccordement du capteur et du porte-fusée.A known solution for limiting this type of drawback is to produce "pencil" type sensors intended to be directly inserted into the knuckle, by screwing or clipping, for example, without the use of a sensor holder: a passageway pollution and dust likely to degrade the performance of the sensor is thus removed. Other infiltration paths of any particles remain, however, especially at the connection interface of the sensor and the knuckle.
La présente invention a pour but de proposer un dispositif permettant de limiter au maximum les voies d'infiltration de particules et de poussières dans la zone de raccordement du capteur au porte-fusée de la roue.The object of the present invention is to propose a device making it possible to limit as far as possible the infiltration paths of particles and dust in the zone of connection of the sensor to the knuckle of the wheel.
Dans ce but, l'invention a pour obj et un dispositif de protection pour un capteur d'un véhicule automobile destiné à être directement placé sur le porte-fusée d' une roue du véhicule, ledit dispositif de protection étant déplaçable entre une position de repos dans laquelle elle est éloignée de la zone de raccordement du capteur au porte-fusée, et une position de travail dans laquelle, ledit capteur étant monté sur ledit porte-fusée, il est placé au voisinage de ladite zone de raccordement, caractérisée en ce qu'elle comporte, au moins :For this purpose, the object of the invention is a protective device for a sensor of a motor vehicle intended to be directly placed on the stub axle of a wheel of the vehicle, said protective device being movable between a position of rest in which it is remote from the connection area of the sensor to the knuckle, and a working position in which, said sensor being mounted on said knuckle, it is placed at the vicinity of said connection zone, characterized in that it comprises, at least:
- une zone de réception et de blocage dudit capteur,a zone for receiving and blocking said sensor,
- deux languettes sensiblement flexibles destinées, lorsque ledit dispositif de protection est en position de travail , à entourer la zone de raccordement dudit capteur audit porte-fusée.two substantially flexible tongues intended, when said protection device is in the working position, to surround the connection zone of said sensor to said knuckle.
Avantageusement, le capteur comprend une zone de préhension, et la zone de réception et de blocage du dispositif de protection selon l'invention est apte à coopérer avec ladite zone de préhension.Advantageously, the sensor comprises a gripping zone, and the receiving and locking zone of the protection device according to the invention is able to cooperate with said gripping zone.
La zone de réception et de blocage du dispositif de protection selon l'invention comporte en outre, sur l'une de ses faces, un orifice à travers lequel le câble du capteur est apte à être enfilé, ainsi que, sur sa face opposée à la face sur laquelle est ménagé ledit orifice, une ouverture dont la forme intérieure est sensiblement complémentaire de la forme extérieure de la zone de préhension du capteur : le dispositif de protection selon l'invention forme de plus, entre sa face comportant ledit orifice et sa face comportant ladite ouverture, un manchon dont les formes et dimensions intérieures sont sensiblement complémentaires des formes et dimensions extérieures de ladite zone de préhension du capteur.The zone for receiving and blocking the protection device according to the invention further comprises, on one of its faces, an orifice through which the sensor cable is able to be threaded, as well as, on its face opposite to the face on which is formed said orifice, an opening whose inner shape is substantially complementary to the outer shape of the gripping area of the sensor: the protection device according to the invention forms more, between its face comprising said orifice and its face having said opening, a sleeve whose shapes and internal dimensions are substantially complementary to the shapes and external dimensions of said gripping area of the sensor.
Les deux languettes du dispositif de protection selon l'invention s'étendent, sensiblement perpendiculairement l'une à l'autre, à partir de la face de la zone de réception de ladite bonnette sur laquelle est ménagée l'ouverture mentionnée ci-dessus : elles s'étendent également de part et d'autre de ladite face, et, avantageusement, un ensemble de fentes est ménagé à l'intersection desdites languettes entre elles et avec la zone de réception du dispositif de protection selon l'invention, de telle manière que lesdites languettes peuvent se mouvoir indépendamment l'une de l'autre, d'une part, et que les parties desdites languettes situées de part et d'autre de ladite zone de réception peuvent également se mouvoir indépendamment les unes des autres.The two tabs of the protective device according to the invention extend, substantially perpendicularly to one another, from the face of the receiving zone of said windshield on which is formed the opening mentioned above: they also extend on either side of said face, and, advantageously, a set of slots is provided at the intersection of said tabs with each other and with the receiving zone of the protection device according to the invention, of such so that said tongues can move independently of each other, on the one hand, and that the parts of said tongues located on either side of said receiving zone can also move independently of each other.
Avantageusement, lorsque le dispositif de protection selon l'invention est en position de travail, la zone de préhension du capteur est engagée dans la zone de réception du dispositif de protection selon l'invention, et lesdites au moins deux languettes sensiblement flexibles sont aptes à coopérer avec les faces du porte-fusée situées au voisinage de la zone de raccordement du capteur sur ledit porte-fusée, de manière à définir, autour dudit capteur installé sur ledit porte-fusée, un volume sensiblement fermé. Selon un mode de réalisation particulier de l'invention, le dispositif de protection est enfilé sur le câble du capteur, avant que ledit capteur ne soit monté sur ledit câble, et peut coulisser le long dudit câble entre sa position de repos et sa position de travail .Advantageously, when the protection device according to the invention is in the working position, the gripping zone of the sensor is engaged in the receiving zone of the protection device according to the invention, and said at least two substantially flexible tongues are adapted to cooperate with the faces of the knuckle support situated in the vicinity of the zone of connection of the sensor on said knuckle, so as to define, around said sensor installed on said knuckle, a substantially closed volume . According to a particular embodiment of the invention, the protection device is threaded on the cable of the sensor, before said sensor is mounted on said cable, and can slide along said cable between its rest position and its position. job .
Selon un premier mode de réalisation alternatif , le dispositif de protection selon l'invention est enfilé sur le câble du capteur, et solidaire dudit capteur.According to a first alternative embodiment, the protection device according to the invention is threaded onto the sensor cable, and secured to said sensor.
Selon une variante de ce mode de réalisation, la zone de réception du dispositif de protection selon l'invention et la zone de préhension du capteur sont confondues.According to a variant of this embodiment, the reception zone of the protection device according to the invention and the gripping zone of the sensor are combined.
Selon un deuxième mode de réalisation alternatif , le dispositif de protection selon l'invention est pourvu d'au moins une fente permettant sa mise en place autour du câble du capteur, une fois ledit capteur installé sur le porte-fusée.According to a second alternative embodiment, the protection device according to the invention is provided with at least one slot allowing it to be placed around the sensor cable once said sensor is installed on the stub axle.
D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit , en référence aux figures annexées dans lesquelles : - les figures 1 et 2 sont des vues schématiques en perspective, selon différents angles de vue, d'une partie d'un porte-fusée équipé d'un capteur et d'un dispositif de protection selon un mode de réalisation de l'invention, dans la position de repos dudit dispositif de protection, - les figures 3 et 4 sont des vues schématiques en perspective d'une partie d'un porte-fusée et d'un dispositif de protection selon l'invention, dans sa position de travail, selon différents angles de vue.Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the appended figures in which: FIGS. 1 and 2 are diagrammatic perspective views, according to different angles of view, of a part of a stub axle equipped with a sensor and a protective device according to one embodiment of the invention, in the rest position of said protection device, - Figures 3 and 4 are schematic views of perspective of a portion of a stub axle and a protective device according to the invention, in its working position, according to different angles of view.
Ainsi que le montrent plus particulièrement les figures 1 et 2, afin d'optimiser la conduite d'un véhicule automobile, et, en particulier, de limiter les phénomènes de blocage de roue, par exemple lors d'un freinage d'urgence, un capteur 1 peut être placé sur le porte-fusée 2 d' une roue dudit véhicule : le capteur 1 est relié par un câble 3 au dispositif de contrôle des différents paramètres de conduite du véhicule. Ainsi qu'il a été évoqué précédemment, afin de protéger la zone de connexion du capteur 1 au porte-fusée 2 contre l'infiltration éventuelle de particules ou poussières susceptibles d'endommager ledit capteur 1 et de dégrader ses performances, l'invention propose de placer, autour de ladite zone de connexion, un dispositif de protection 4 dont les formes et mode d'opération vont maintenant être décrits de manière pi us détaillée. Selon le mode de réalisation représenté par les figures, le dispositif de protection 4 selon l'invention est mobile entre une position de repos, représentée par les figures 1 et 2, dans laquelle il est éloigné de la zone de connexion du capteur 1 au porte-fusée 2, et une position de travail , représentée par les figures 3 et 4, dans laquelle il protège la zone de connexion du capteur 1 au porte-fusée 2.As shown more particularly in FIGS. 1 and 2, in order to optimize the driving of a motor vehicle, and in particular to limit the wheel lock phenomena, for example during an emergency braking, a sensor 1 can be placed on the knuckle 2 of a wheel of said vehicle: the sensor 1 is connected by a cable 3 to the control device of the various driving parameters of the vehicle. As mentioned above, in order to protect the connection area of the sensor 1 to the knuckle 2 against the possible infiltration of particles or dusts likely to damage said sensor 1 and degrade its performance, the invention proposes placing, around said connection zone, a protection device 4 whose forms and mode of operation will now be described in more detail. According to the embodiment represented by the figures, the protection device 4 according to the invention is movable between a rest position, represented by FIGS. 1 and 2, in which it is remote from the connection zone of the sensor 1 to the door 2, and a working position, represented by FIGS. 3 and 4, in which it protects the connection zone of the sensor 1 to the stub axle 2.
Dans ce qui suit, l'invention sera tout d'abord décrite pour un mode de réalisation selon lequel le dispositif de protection 4 est enfilé autour du câble 3 avant montage du capteur 1 à l'extrémité dudit câble 3 : d'autres modes de réalisation seront ensuite évoqués.In what follows, the invention will first be described for an embodiment according to which the protection device 4 is threaded around the cable 3 before mounting the sensor 1 at the end of said cable 3: other modes of realization will then be mentioned.
Le capteur 1 , placé à une extrémité du câble 3, comporte une zone de préhension 5 munie d'au moins un élément 51 permettant de faciliter sa préhension manuelle ou mécanique au moment de sa connexion sur le porte- fusée 2 : selon le mode de réalisation présenté par les figures 1 et 2, la zone de préhension 5 s'étend, à partir de l'extrémité du câble 3 sur laquelle le capteur 1 est monté, dans la direction dudit câble 3 : elle enveloppe sensiblement ladite extrémité dudit câble 3, et est munie de deux plaquettes 51 et 51' diamétralement opposées par rapport audit câble 3, sensiblement concaves et orientées à l'opposé du câble 3, destinées à faciliter la prise manuelle du capteur 1. Avantageusement, la zone de préhension 5 est réalisée dans un matériau plastique sensiblement élastique. La zone de préhension 5 peut également être rapportée, par exemple par surmoulage, sur le capteur 1 proprement dit ou sur l'extrémité du câble 3 sur laquelle il est monté.The sensor 1, placed at one end of the cable 3, comprises a gripping zone 5 provided with at least one element 51 making it easier to grip manually or mechanically when it is connected to the rocket carrier 2: according to the method of embodiment shown in Figures 1 and 2, the gripping zone 5 extends from the end of the cable 3 on which the sensor 1 is mounted in the direction of said cable 3: it substantially envelops said end of said cable 3 , and is provided with two plates 51 and 51 'diametrically opposite with respect to said cable 3, substantially concave and oriented opposite the cable 3, intended to facilitate manual gripping of the sensor 1. Advantageously, the gripping zone 5 is made in a substantially elastic plastic material. The gripping zone 5 can also be reported, for example by overmolding, on the sensor 1 itself or on the end of the cable 3 on which it is mounted.
Le dispositif de protection 4 selon l'invention, réalisé dans un matériau plastique souple, préférentiellement mais de manière non limitative dans un matériau élastomère, comporte principalement , ainsi qu'il a été mentionné plus haut, une zone de réception et de blocage 6, et au moins deux languettes 7 et 8 sensiblement flexibles dont les formes et fonctions seront détaillées ultérieurement. La zone de réception 6 forme un logement apte à recevoir la zone de préhension 5 du capteur 1. Un orifice 61 , dont le diamètre est légèrement supérieur au diamètre du câble 3, est ménagé sur une partie 62 de la zone de réception 6, de telle manière que le dispositif de protection 4 puisse être enfilé, par ledit orifice 61 , sur ledit câble 3. A l'opposé de l'orifice 61 , la zone de réception 6 du dispositif de protection 4 selon l'invention comporte une ouverture 63, dont les dimensions intérieures sont sensiblement égales aux dimensions extérieures de la zone de préhension 5 du capteur 1 , par laquelle la zone de réception 6 est apte à être engagée autour de ladite zone de préhension 5 du capteur 1. Entre l'ouverture 63 et la partie 62 munie de l'orifice 61 , la zone de réception 6 du dispositif de protection 4 forme sensiblement un manchon 64 dont les formes et les dimensions intérieures sont sensiblement complémentaires des formes et dimensions extérieures de la zone de préhension 5 du capteur 1. Sfelon Ie mode de réalisation représenté par les figures, la zone de réception 6 a sensiblement la forme d'un parallélépipède rectangle dont une face est percée de l'orifice 61 , et dont la face opposée forme l'ouverture 63 : selon d'autres modes de réalisation, la forme de la zone de réception 6 pourra être quelconque, le seul impératif étant qu'elle soit apte à coopérer avec les formes extérieures de la zone de préhension 5 du capteur 1. La languette 7 s'étend, à partir du manchon 64 de la zone de réception 6, sensiblement dans le prolongement de la surface délimitée par l'ouverture 63, de part et d'autre de ladite ouverture 63.The protection device 4 according to the invention, made of a flexible plastic material, preferably but in a non-limiting manner in a Elastomeric material, comprises mainly, as mentioned above, a receiving and blocking zone 6, and at least two substantially flexible tabs 7 and 8 whose forms and functions will be detailed later. The receiving zone 6 forms a housing adapted to receive the gripping zone 5 of the sensor 1. An orifice 61, whose diameter is slightly greater than the diameter of the cable 3, is formed on a portion 62 of the receiving zone 6, in such a way that the protective device 4 can be threaded through said orifice 61 onto said cable 3. Opposite the orifice 61, the receiving zone 6 of the protection device 4 according to the invention comprises an opening 63 , whose inner dimensions are substantially equal to the outer dimensions of the gripping zone 5 of the sensor 1, by which the receiving zone 6 is able to be engaged around said gripping zone 5 of the sensor 1. Between the opening 63 and the portion 62 provided with the orifice 61, the receiving zone 6 of the protection device 4 substantially forms a sleeve 64 whose shapes and internal dimensions are substantially complementary to the shapes and external dimensions 1 of the gripping zone 5 of the sensor 1. According to the embodiment shown in the figures, the receiving zone 6 is substantially in the shape of a rectangular parallelepiped, one face of which is pierced with the orifice 61, and whose face Opposite form the opening 63: according to other embodiments, the shape of the receiving zone 6 may be any, the only requirement being that it is able to cooperate with the outer forms of the gripping zone 5 of the sensor 1. The tongue 7 extends, from the sleeve 64 of the receiving zone 6, substantially in the extension of the surface delimited by the opening 63, on either side of said opening 63.
La languette 8, pour sa part, s'étend, depuis le manchon 64 de la zone de réception 6, sensiblement perpendiculairement à la languette 7, dans une direction opposée à celle du manchon 64. La zone de raccordement 9 des languettes 7 et 8 entre elles et avec le manchon 64 comporte deux fentes 10 et 10' permettant des mouvements indépendants desdites languettes 7 et 8 l'une par rapport à l'autre et par rapport au manchon 64 de la zone de réception 6 du dispositif de protection 4. Le côté de la languette 8 opposé à la zone de raccordement 9 comporte en outre une découpe 11 , dont le rôle sera précisé ultérieurement, sensiblement incurvée vers le manchon 64. Selon le mode de réalisation représenté par les figures, le dispositif de protection 4 selon l'invention est sensiblement symétrique, les languettes 7 et 8 étant, en particulier, symétriques par rapport à la zone de réception 6 : un tel mode de réalisation, s'il simplifie la fabrication du dispositif de protection 4, n'est toutefois pas limitatif , et les languettes 7 et 8 peuvent, sans inconvénient pour l'invention, ne pas être symétriques par rapport à la zone de réception 6.The tongue 8, for its part, extends, from the sleeve 64 of the receiving zone 6, substantially perpendicular to the tongue 7, in a direction opposite to that of the sleeve 64. The connection zone 9 of the tongues 7 and 8 between them and with the sleeve 64 has two slots 10 and 10 'allowing independent movements of said tabs 7 and 8 relative to each other and relative to the sleeve 64 of the receiving zone 6 of the protection device 4. The side of the tongue 8 opposite to the connection zone 9 further comprises a cutout 11, whose role will be specified later, substantially curved towards the sleeve 64. According to the embodiment represented by the figures, the protection device 4 according to the invention is substantially symmetrical, the tongues 7 and 8 being, in particular, symmetrical with respect to the receiving zone 6: such an embodiment, if it simplifies the manufacture of the protection device 4, However, the tabs 7 and 8 can, without inconvenience to the invention, not be symmetrical with respect to the reception zone 6.
Lorsque le capteur 1 est fixé sur le porte-fusée 2, il suffit, pour amener le dispositif de protection 4 selon l'invention en position de travail, de le faire coulisser le long du câble 3 autour duquel il est enfilé. La zone de préhension 5 du capteur 1 est alors, successivement, engagée dans l'ouverture 63 de la zone de réception 6 du dispositif de protection 4, puis insérée dans le volume délimité par le manchon 64 et la face 62 de la zone de réception 6. Avantageusement, ledit au moins un élément 51 de la zone de préhension 5 du capteur 1 permet, par sa forme et ses caractéristiques mécaniques, un blocage du capteur 1 au sein dudit volume. Salon le mode de réalisation présenté par les figures, les dimensions extérieures de la zone de préhension 5 augmentée des plaquettes 51 et 51' sont ainsi légèrement supérieures aux dimensions intérieures du manchon 64 : la zone de réception 6 du dispositif de protection 4 se déforme ainsi légèrement au moment de l'engagement de la zone de préhension 5 du capteur 1 , afin de permettre le passage desdites plaquettes 51 et 51', qui permettent alors, par leur forme, un blocage du capteur 1 dans ladite zone de réception 6.When the sensor 1 is fixed on the knuckle 2, it is sufficient, to bring the protection device 4 according to the invention in the working position, to slide along the cable 3 around which it is threaded. The gripping zone 5 of the sensor 1 is then, successively, engaged in the opening 63 of the receiving zone 6 of the protection device 4, then inserted into the volume delimited by the sleeve 64 and the face 62 of the receiving zone. 6. Advantageously, said at least one element 51 of the gripping zone 5 of the sensor 1 allows, by its shape and its mechanical characteristics, a locking of the sensor 1 within said volume. According to the embodiment shown in the figures, the external dimensions of the gripping zone 5 increased by the plates 51 and 51 'are thus slightly greater than the internal dimensions of the sleeve 64: the receiving zone 6 of the protection device 4 thus deforms. slightly at the time of engagement of the gripping zone 5 of the sensor 1, to allow the passage of said plates 51 and 51 ', which then allow, by their shape, a locking of the sensor 1 in said receiving zone 6.
Le dispositif de protection 4 étant dans sa position de travail, les languettes 7 et 8 sont alors au contact des surfaces voisines du porte-fusée 2, ainsi que le présentent les figures 3 et 4 : leur flexibilité, ainsi que leur aptitude, grâce aux fentes 10 et 10' précédemment décrites, à se mouvoir indépendamment l'une de l'autre, permettent alors leur déformation de manière à épouser la forme desdites surfaces. La languette 7 coopère ainsi par plaquage avec la surface 11 du porte-fusée 2 à laquelle est connecté le capteur 1 , de part et d'autre dudit capteur 1 ; et la languette 8 coopère par plaquage avec la surface 12 du porte- fusée 2 sur un élément de laquelle est monté le bol de transmission 13, la découpe 11 ménagée sur ladite languette 8 permettant alors à celle-ci de s'adapter à la forme dudit élément sur lequel est monté ledit bol de transmission 13.The protection device 4 being in its working position, the tongues 7 and 8 are then in contact with the neighboring surfaces of the knuckle carrier 2, as shown in FIGS. 3 and 4: their flexibility, as well as their aptitude, thanks to the slots 10 and 10 'previously described, to move independently of one another, then allow their deformation so as to match the shape of said surfaces. The tongue 7 thus cooperates by plating with the surface 11 of the knuckle 2 to which is connected the sensor 1, on both sides of said sensor 1; and the tongue 8 cooperates by plating with the surface 12 of the knuckle 2 on an element of which is mounted the transmission bowl 13, the cutout 11 formed on said tongue 8 then allowing it to adapt to the shape said element on which is mounted said transmission bowl 13.
Le capteur 1 se trouve ainsi pris dans un logement délimité par, d'une part, la surface 11 du porte-fusée 2, et par, d'autre part, la languette 8, le manchon 64, et la surface 62 du dispositif de protection 4 selon l'invention. Avantageusement, le matériau du dispositif de protection 4 selon l'invention sera choisi de telle manière que sa dureté permette que les languettes 7 et 8 du dispositif de protection 4 exercent une pression sur les surfaces 11 et 12 du porte-fusée 2, assurant ainsi une fermeture optimale dudit logement, et empêchant toute infiltration de particules ou de poussières au voisinage du capteur 1.The sensor 1 is thus taken in a housing delimited by, on the one hand, the surface 11 of the knuckle carrier 2, and on the other hand, the tongue 8, the sleeve 64, and the surface 62 of the protection 4 according to the invention. Advantageously, the material of the protection device 4 according to the invention will be chosen such that its hardness allows the tongues 7 and 8 of the protection device 4 to exert pressure on the surfaces 11 and 12 of the knuckle carrier 2, thus ensuring an optimal closure of said housing, and preventing any infiltration of particles or dust in the vicinity of the sensor 1.
Selon différents modes de réalisation, le dispositif de protection 4 selon l'invention pourra, ainsi qu'il vient d'être décrit, être enfilé sur le câble 3 avant montage du capteur 1 à l'extrémité de celui-ci, ou mis en place sur ledit câble 3 une fois le capteur 1 monté à l'extrémité de celui-ci. Dans le premier cas, le dispositif de protection 4 pourra être monté coulissant sur le câble 3, entre sa position de repos et sa position de travail, ainsi qu'il vient d'être décrit. Alternativement , le dispositif de protection 4 pourra être solidaire de la zone de préhension 5 du capteur 1 , ou, selon un autre mode de réalisation alternatif , être réalisé en une seule pièce avec ledit capteur 1 , la zone de préhension 5 étant alors supprimée et remplacée par le manchon 64, dont les formes et dimensions extérieures seront alors adaptées pour permettre une préhension manuelle ou mécanique facile de l'ensemble. Dans le second cas, une fente 14, représentée en traits discontinus sur la figure 4, sera ménagée sur le dispositif de protection 4, de telle sorte qu'il soit possible d'écarter les deux parties de celle-ci séparées par ladite fente 14, de manière à insérer, grâce à l'élasticité et à la souplesse du matériau constituant le dispositif de protection 4, ledit dispositif de protection 4 autour du câble 3, après montage et mise en place du capteur 1 sur le porte-fusée 2. Selon le mode de réalisation présenté par les figures, la fente 14 pourra être ménagée selon un plan de symétrie du dispositif de protection 4 : selon d'autres modes de réalisation, la fente 14 pourra être placée de manière quelconque sur le dispositif de protection 4, le seul impératif étant qu'elle délimite deux parties dont la séparation permettra son insertion autour du câble 3. According to various embodiments, the protection device 4 according to the invention may, as just described, be threaded onto the cable 3 before mounting the sensor 1 at the end thereof, or put in place. place on said cable 3 once the sensor 1 mounted at the end thereof. In the first case, the protective device 4 may be slidably mounted on the cable 3, between its rest position and its working position, as just described. Alternatively, the protective device 4 may be integral with the gripping zone 5 of the sensor 1, or, according to another alternative embodiment, be made in one piece with said sensor 1, the gripping zone 5 then being removed and replaced by the sleeve 64, the outer shapes and dimensions will then be adapted to allow easy manual gripping or mechanical assembly. In the second case, a slot 14, shown in broken lines in FIG. 4, will be provided on the protection device 4, so that it is possible to separate the two parts thereof separated by said slot 14. , so as to insert, thanks to the elasticity and flexibility of the material constituting the protection device 4, said protection device 4 around the cable 3, after mounting and placing the sensor 1 on the knuckle carrier 2. According to the embodiment shown in the figures, the slot 14 may be formed according to a plane of symmetry of the protection device 4: according to other embodiments, the slot 14 may be placed in any way on the protection device 4 , the only imperative being that it delimits two parts whose separation will allow its insertion around the cable 3.

Claims

Revendications claims
1. Dispositif de protection (4) pour un capteur (1) d'un véhicule automobile destiné à être directement placé sur le porte-fusée (2) d' une roue dudit véhicule, le dispositif de protection (4) étant déplaçable entre une position de repos dans laquelle il est éloigné de la zone de raccordement du capteur (1) au porte-fusée (2), et une position de travail dans laquelle, le capteur (1) étant monté sur le porte-fusée (2), il est placé au voisinage de ladite zone de raccordement, caractérisé en ce qu'il comporte, au moins :Protective device (4) for a sensor (1) of a motor vehicle intended to be directly placed on the stub axle (2) of a wheel of said vehicle, the protection device (4) being movable between a position of rest in which it is remote from the connection area of the sensor (1) to the knuckle (2), and a working position in which, the sensor (1) being mounted on the knuckle (2), it is placed in the vicinity of said connection zone, characterized in that it comprises, at least:
- une zone de réception et de blocage (6) dudit capteur (1),a receiving and blocking zone (6) of said sensor (1),
- deux languettes (7), (8) sensiblement flexibles destinées, lorsque le dispositif de protection (4) est en position de travail , à entourer la zone de raccordement du capteur (1) au porte-fusée (2).- Two substantially flexible tongues (7), (8) intended, when the protective device (4) is in the working position, to surround the connection area of the sensor (1) to the knuckle (2).
2. Dispositif de protection (4) selon la revendication 1 , caractérisé en ce que la zone de réception (6) est apte à recevoir une zone de préhension (5) du capteur (1).2. Protection device (4) according to claim 1, characterized in that the receiving area (6) is adapted to receive a gripping area (5) of the sensor (1).
3. Dispositif de protection (4) selon la revendication 2, caractérisé en ce qu'une face (62) de la zone de réception (6) comporte un orifice (61) à travers lequel le câble (3) du capteur (1) peut être enfilé, et en ce que ladite zone de réception comporte, sur sa face opposée à ladite face (62), une ouverture (63) dont la forme est complémentaire de celle de la zone de préhension (5) du capteur (1), ladite zone de réception (6) formant, entre sa face (62) et sa face comportant l'ouverture (63), un manchon (64) dont les formes et dimensions intérieures sont sensiblement complémentaires des formes et dimensions extérieures de ladite zone de préhension (5).3. Protective device (4) according to claim 2, characterized in that a face (62) of the receiving zone (6) comprises an orifice (61) through which the cable (3) of the sensor (1) may be threaded, and in that said receiving zone comprises, on its face opposite to said face (62), an opening (63) whose shape is complementary to that of the gripping zone (5) of the sensor (1) said receiving zone (6) forming, between its face (62) and its face having the opening (63), a sleeve (64) whose inner shapes and dimensions are substantially complementary to the shapes and external dimensions of said zone of gripping (5).
4. Dispositif de protection (4) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que lesdites au moins deux languettes (7), (8) s'étendent, sensiblement perpendiculairement l'une à l'autre, à partir de la face de la zone de réception (6) sur laquelle est ménagée l'ouverture (63). 4. Protective device (4) according to any one of claims 1 to 3, characterized in that said at least two tabs (7), (8) extend substantially perpendicular to each other, to from the face of the receiving zone (6) on which is formed the opening (63).
5. Dispositif de protection (4) selon la revendication 4, caractérisé en ce qu'un ensemble de fentes (10), (10') est ménagé à l'intersection des languettes (7), (8).5. Protection device (4) according to claim 4, characterized in that a set of slots (10), (10 ') is provided at the intersection of the tabs (7), (8).
6. Dispositif de protection (4) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que, en position de travail , la zone de préhension (5) du capteur (1) et ledit capteur (1) sont engagés dans la zone de réception (6), et que lesdites languettes (7), (8), sont respectivement plaquées contre les surfaces (11), (12) du porte-fusée (2) voisines de la zone de raccordement dudit capteur (1) audit porte-fusée (2).6. Protection device (4) according to any one of claims 1 to 5, characterized in that, in the working position, the gripping zone (5) of the sensor (1) and said sensor (1) are engaged in the reception zone (6), and that said tongues (7), (8) are respectively pressed against the surfaces (11), (12) of the knuckle (2) adjacent to the connection zone of said sensor (1 ) to said rocket carrier (2).
7. Dispositif de protection (4) selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il est enfilé autour du câble (3) du capteur (1) avant montage dudit capteur (1) sur ledit câble (3) et qu'il est apte à coulisser le long dudit câble entre sa position de repos et sa position de travail.7. Protection device (4) according to any one of claims 1 to 6, characterized in that it is threaded around the cable (3) of the sensor (1) before mounting said sensor (1) on said cable (3). ) and that it is slidable along said cable between its rest position and its working position.
8. Dispositif de protection (4) selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il est solidaire de la zone de préhension (5) dudit capteur ( 1 ) .8. Protection device (4) according to any one of claims 1 to 6, characterized in that it is integral with the gripping area (5) of said sensor (1).
9. Dispositif de protection (4) selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il comporte une fente (14) s'étendant, à partir de l'orifice (61), sur toute la largeur de l'une de ses faces, et en ce que les deux parties de ladite bonnette (4) séparées par ladite fente (14) peuvent être écartées l'une de l'autre pour permettre l'insertion de ladite bonnette (4) autour du câble (3) du capteur (1).9. Protection device (4) according to any one of claims 1 to 6, characterized in that it comprises a slot (14) extending from the orifice (61) over the entire width of one of its faces, and in that the two parts of said windscreen (4) separated by said slot (14) can be spaced from each other to allow the insertion of said windscreen (4) around the cable (3) of the sensor (1).
10. Véhicule automobile équipé d'au moins un capteur (1) muni d'un dispositif de protection selon l'une quelconque des revendications 1 à 9. Motor vehicle equipped with at least one sensor (1) provided with a protective device according to any one of claims 1 to 9.
PCT/FR2006/051198 2005-12-22 2006-11-20 Device for protecting a sensor WO2007074250A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0554048A FR2895504A1 (en) 2005-12-22 2005-12-22 Protective device for a stub-axle mounted, motor vehicle wheel sensor, has a sensor receiving zone, a lock element for the sensor and two flexible strips which surround the sensor connection to the stub axle
FR0554048 2005-12-22

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WO2007074250A1 true WO2007074250A1 (en) 2007-07-05

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PCT/FR2006/051198 WO2007074250A1 (en) 2005-12-22 2006-11-20 Device for protecting a sensor

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Publication number Priority date Publication date Assignee Title
FR3107356B1 (en) 2020-02-17 2024-03-22 Renault Sas ASSEMBLY COMPRISING A KNUCKLE AND A SENSOR OF THE ROTATIONAL SPEED OF A MOTOR VEHICLE WHEEL
FR3121209B1 (en) 2021-03-26 2023-05-26 Renault Sas ASSEMBLY COMPRISING BRACKET AND SENSOR MOUNTED IN BRACKET HOUSING

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4960333A (en) * 1989-10-16 1990-10-02 The Torrington Company Antifriction bearing assembly speed sensor
EP0446440A2 (en) * 1990-02-07 1991-09-18 W. Günther GmbH Modular housing for electromechanical or electronic sensor
EP0631139A1 (en) * 1993-06-24 1994-12-28 Firma Carl Freudenberg Sealing device with sensor
US20020125881A1 (en) * 2001-03-08 2002-09-12 Stroeters Kurt H. Sensor positive latch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4960333A (en) * 1989-10-16 1990-10-02 The Torrington Company Antifriction bearing assembly speed sensor
EP0446440A2 (en) * 1990-02-07 1991-09-18 W. Günther GmbH Modular housing for electromechanical or electronic sensor
EP0631139A1 (en) * 1993-06-24 1994-12-28 Firma Carl Freudenberg Sealing device with sensor
US20020125881A1 (en) * 2001-03-08 2002-09-12 Stroeters Kurt H. Sensor positive latch

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