WO2020049023A1 - Hinged measurement sensor - Google Patents

Hinged measurement sensor Download PDF

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Publication number
WO2020049023A1
WO2020049023A1 PCT/EP2019/073539 EP2019073539W WO2020049023A1 WO 2020049023 A1 WO2020049023 A1 WO 2020049023A1 EP 2019073539 W EP2019073539 W EP 2019073539W WO 2020049023 A1 WO2020049023 A1 WO 2020049023A1
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WO
WIPO (PCT)
Prior art keywords
rim
measurement sensor
electronic unit
axis
wheel
Prior art date
Application number
PCT/EP2019/073539
Other languages
French (fr)
Inventor
Frédéric GAUGAIN
Jérémy MIEYAN
Gilles Capdepon
Original Assignee
Continental Automotive France
Continental Automotive Gmbh
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 Continental Automotive France, Continental Automotive Gmbh filed Critical Continental Automotive France
Publication of WO2020049023A1 publication Critical patent/WO2020049023A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0491—Constructional details of means for attaching the control device
    • B60C23/0494—Valve stem attachments positioned inside the tyre chamber

Definitions

  • the invention relates to the field of vehicle tires and relates more particularly to a measurement sensor integrated in a tire.
  • the invention aims in particular to prevent the reversal of such a sensor when the vehicle is moving and the wheel is turning.
  • TPMS sensor for "Tire Pressure Monitoring System” in English, meaning “Tire pressure monitoring system”.
  • TPMS sensor for "Tire Pressure Monitoring System” in English, meaning “Tire pressure monitoring system”.
  • Such a sensor the data of which is transmitted to a computer on board the vehicle, makes it possible for example to measure the pressure of the gases present inside the tire as well as their temperature.
  • the measurement sensor 103 comprises an electronic unit 131, making it possible to take the data and transmit them to the on-board computer, and an inflation valve 132 extending along an axis A, crossing the rim projecting towards the outside of the wheel and which is able to cooperate with an inflation pump.
  • a wheel comprises a tire 1 mounted coaxially on a rim 2.
  • the wheel is described with reference to an orthogonal reference (X, Y, Z) linked to the wheel in which the X axis corresponds to the axis of rotation of the wheel and the Y and Z axes define a plane called "transverse" to the X axis.
  • axial is meant an object extending along the X axis and “Radial” an object extending in the transverse plane (Y, Z).
  • the X axis extends from the inside to the outside in the wheel mounted position on the vehicle.
  • the rim 2 has a cylindrical shape comprising a lateral surface called “bottom 20” of the rim 2 from which extend on either side of the rim 2 two shoulders 21, 22, on which the tire 1 rests, and two walls 23, 24 constituting the lateral faces of the rim 2.
  • the shoulder 22 and the lateral wall 24 are intended to be positioned outside the wheel and have an orifice allowing the inflation valve 132 to pass, so that it crosses the rim 2 and protrudes outward from the wheel.
  • Such a passage orifice is positioned in a standard manner on the rim 2, in order to harmonize the location of the inflation valve 132 whatever the type or dimensions of the rim 2.
  • Such a predetermined location is thus at a radial distance from the predetermined and known rim bottom 20 2.
  • the electronic unit 131 is configured to be positioned on the rim base 20 behind the shoulder 22 so as not to exceed the height of said shoulder 22 and thus avoid the tearing or damage of the measurement sensor 103 during a change of tire 1, in particular by means of a mechanical arm. Indeed, such a mechanical arm rotates along each shoulder 21, 22 so as to fully insert the tire 1 behind the side wall 23, 24. Also, during such an operation, the mechanical arm could catch the measurement sensor 103 and damage it if it exceeded the height of the shoulder 22.
  • the positioning of the inflation valve 132 opposite screw of the passage orifice and the positioning of the electronic unit 131 on the bottom 20 of the rim 2 causes a radial offset of the electronic unit 131 relative to the inflation valve 132 in order to maintain the electronic unit 131 under the shoulder 22 .
  • the center of gravity G of the measurement sensor 103 is found offset between the axis A of the inflation valve 132, which extends along an axis B, parallel to the axis X and the bottom 20 of rim 2, which has a drawback in the event of rotation of the wheel.
  • the gyratory effect when the wheel turns, the gyratory effect generates a centrifugal force F, that is to say a radial force, which drives the center of gravity P of the electronic unit 131 towards the periphery of the wheel, thus causing the electronic unit 131 rotating around the axis B, as shown in FIG. 4.
  • a centrifugal force F can cause the measurement sensor 103 to turn over, which has the drawback of generating a significant drop in performance electronic sensors 103 or even malfunctions, such as reading or data transmission errors.
  • the measurement sensor 103 comprises a heavier inflation valve 132 so as to offset the center of gravity P of the assembly of the measurement sensor 103 on the inflation valve 132, towards the outside of the wheel.
  • the inflation valve 132 is driven under the centrifugal force of rotation of the wheel, the electronic unit 131 is thus pressed against the bottom 20 of the rim 2, preventing its overturning.
  • the increase in the mass of the inflation valve 132 leads to the appearance of stresses in particular at the junction between the inflation valve 132 and the rim 2, which can cause rapid deterioration of the measurement sensor 103.
  • the weighing down of the measurement sensor 103 presents a major drawback, since current technologies are moving more and more towards a reduction in all of the equipment installed. in a vehicle in order to improve its performance while limiting the energy consumption of the traction chain.
  • stops (not shown) on either side of the electronic unit 131, which come into contact with the rim base 2 when the electronic unit 131 is rotated, preventing thus its reversal.
  • an electronic unit 131 needs to be adapted to different types of vehicle and in particular to different types of wheel, in which the distance between the orifice for passage of the inflation valve 132 and the rim tape can vary.
  • the measurement sensor 131 requires for example an adaptation of the length of the stops for each type of wheel, which is not optimal.
  • stops are fragile in the event of a fall in the measurement sensor 131 before mounting, or during the mounting of the tire 1 which can break them by rubbing against the measurement sensor 103, the stops being protruding.
  • a measurement sensor 103 comprising an electronic unit 131 having a more elongated shape (along the axis Y of FIG. 1) so as to extend over a larger surface of the bottom 20 of rim 2 and thus avoid its overturning when a centrifugal force is applied to the measurement sensor 103.
  • an electronic unit 131 is also heavier, which has the abovementioned drawbacks.
  • the prior art also includes the document WO 2018/083424 describing a measurement sensor mounted on a rim having an articulation between the electronic unit and the valve of the measurement sensor, the articulation being produced by an elastic spring-effect means having for purpose of holding the electronic unit against the rim tape, document EP 1 449 683 describing a measurement sensor mounted on a rim having a joint between the electronic unit and the valve of the measurement sensor, the joint being produced by a spring flat reminder intended to hold the electronic unit against the rim tape, and document FR 2 909 039 describing a measurement sensor mounted on a rim having a connection element between the electronic unit and the valve of the measurement sensor allowing adjusting the angle between the electronic unit and the valve of the measurement sensor when mounting the sensor measurement on the rim.
  • the contact of the electronic unit of the measurement sensor with the rim tape is sought.
  • the invention therefore aims to remedy these drawbacks at least in part by proposing a simple, reliable and effective solution allowing a sensor mounted in a wheel to measure the data related to the tire, whatever the driving conditions of the vehicle.
  • the invention relates in particular to a light measurement sensor making it possible to lower the stresses in the various parts of the sensor while limiting the risks of overturning of the electronic unit.
  • the invention firstly relates to a measurement sensor, intended to be mounted on a rim of a vehicle wheel, in particular an automobile wheel, said measurement sensor comprising an electronic unit, capable of measuring at least a pressure value of the gases present inside a tire mounted on said rim, and an inflation valve, adapted to allow the introduction of said gas inside said tire and extending longitudinally along an axis I and laterally along an axis J, said measurement sensor being remarkable in that it comprises at least one connecting member, connecting the electronic unit and the inflation valve, configured to allow the articulation of said electronic unit with respect to said valve inflation in order to move the center of gravity of the electronic unit above the plane formed by the axes I and J when said measurement sensor is mounted in a rotating rim.
  • Such a connecting member advantageously makes it possible to limit or even eliminate the risks of the measurement sensor overturning under the effect of a centrifugal force, advantageously making it possible to ensure good measurement as well as good data transmission to an onboard computer in the vehicle.
  • the connecting member is configured to allow a pivot connection, so as to allow relative movement between the electronic unit and the inflation valve around a common axis making it possible in particular to limit the transmission of force between the electronic unit and inflation valve.
  • the connecting member is configured to allow a ball joint connection, thus making it possible to release the relative rotation of the electronic unit relative to the inflation valve along the three axes of a definition mark of the measurement sensor.
  • the measurement sensor comprises at least one return spring configured to place the electronic unit in a predetermined position relative to the inflation valve. This advantageously makes it possible to ensure the positioning of the electronic unit when the vehicle is stationary, in particular after driving. Such a return spring also makes it possible to ensure that the measurement sensor does not risk being damaged, for example during the dismantling of the tire.
  • the connecting member comprises at least one stop in order to ensure that the electronic unit does not offset little or no.
  • the subject of the invention is also a rim for a vehicle wheel, in particular a motor vehicle wheel, comprising a measurement sensor as described above, whose inflation valve is mounted in an orifice formed in said rim, the measurement sensor being configured to move the center of gravity of the electronic unit radially beyond the longitudinal axis of the inflation valve under the effect of the centrifugal force when the rim is rotating. This allows the electronic unit to be moved radially outward from the wheel in a stable position, thus preventing it from overturning.
  • the rim extending along an axis of rotation and comprising a lateral surface (rim tape) extending circumferentially from said axis of rotation, the connecting member allowing a pivot connection, said member connecting allows rotation of the electronic unit relative to the inflation valve about an axis parallel to an axis tangent to said lateral surface of the rim.
  • a pivot link thus makes it possible to allow the displacement of the center of gravity of the measurement sensor on either side of a plane tangential to the lateral surface of the rim and comprising the longitudinal axis of the inflation valve.
  • the connecting member comprising at least one stop
  • said stop is configured to limit the rotation of the electronic unit relative to the inflation valve at an angle of plus or minus 45 ° around said axis parallel to said axis tangent to said lateral surface.
  • Such a stop advantageously allows the relative pivoting of the electronic unit relative to the inflation valve while ensuring that the electronic unit does not overturn, which cannot be offset at an angle of plus or minus 45 °, at beyond which its proper functioning could not be guaranteed.
  • said rim extending along an axis of rotation and the connecting member allowing a ball joint connection
  • the connecting member comprises at least one stop configured to limit the rotation of the electronic unit to an angle of more or less 45 ° around an axis parallel to said axis of rotation of the rim, advantageously making it possible to limit the transmission of forces between the different parts of the measurement sensor.
  • the invention also relates to a wheel for a vehicle, in particular a motor vehicle, comprising a rim as described above.
  • the invention relates to a vehicle, in particular a motor vehicle, comprising at least one wheel as described above.
  • Figure 1 schematically illustrates a measurement sensor of the prior art.
  • FIG. 2 is a schematic representation of the positioning of the measurement sensor of FIG. 1 on a rim of a wheel of a vehicle.
  • FIG. 3 schematically illustrates the position of the centers of gravity of an electronic unit and of an inflation valve of the measurement sensor of FIG. 1.
  • FIG. 4 schematically illustrates a centrifugal force applied to the measurement sensor of FIG. 1 when the vehicle wheel turns, as well as the inversion effect of the electronic unit induced by such a centrifugal force.
  • FIG. 5 schematically represents the installation of a measurement sensor according to the invention on a rim of a wheel of a vehicle.
  • FIG. 6 is a schematic representation of an embodiment of a measurement sensor according to the invention.
  • FIG. 7 schematically illustrates the articulation between an electronic unit and an inflation valve of the measurement sensor of FIG. 6.
  • the sensor according to the invention is presented below for installation in a wheel of a motor vehicle.
  • any installation in a different context, in particular for any type of vehicle of which at least one wheel comprises a sensor capable of turning over due to centrifugal force is also covered by the present invention.
  • a motor vehicle generally comprises four wheels, each wheel comprising, with reference to FIG. 5, a tire 1 mounted coaxially on a rim 2.
  • a rim 2 has a cylindrical portion having an external lateral surface designated " bottom "20 of rim 2, from which extend, on either side, two shoulders 21, 22 on which the tire 1 rests, and two walls 23, 24 constituting the lateral faces of rim 2.
  • the measurement sensor 3 is configured to be mounted on the rim 2 of the wheel in a similar manner to the prior art.
  • the measurement sensor 3 is configured to be mounted on the bottom 20 of the rim 2 behind the shoulder 22, opposite a passage orifice 2A, as shown in FIG. 5.
  • the wheel is described with reference to an orthogonal coordinate system (X, Y, Z) linked to the wheel in which the X axis corresponds to the axis of rotation of the rim 2 and of the wheel and the Y axes and Z define a plane called "transverse" to the X axis.
  • axial we mean an object extending along the X axis and "radial” an object extending in the transverse plane ( Y, Z).
  • the X axis extends from the inside to the outside in the wheel mounted position on the vehicle.
  • Such a measurement sensor 3 is configured in particular to measure the pressure of the gases present inside the tire 1.
  • the measurement sensor 3 is in the form of a TPMS sensor known to man of the trade and configured to measure for example the pressure or the temperature of the gases inside the tire 1 and to send such measurements to a computer on board the vehicle.
  • TPMS TPMS sensor
  • This document presents the example of a TPMS sensor, however it goes without saying that the sensor measurement 3 could just as easily take the form of a different sensor configured to measure any other parameter of the wheel.
  • the measurement sensor 3 comprises an electronic unit 31 making it possible to take the data and transmit them to the on-board computer, an inflation valve 32, configured to pass through the rim 2 of the wheel by the passage orifice 2A so as to project outwardly from the rim 2, and a connecting member 33, configured to allow articulation of the electronic unit 31 relative to the inflation valve 32.
  • the measurement sensor 3 is described in an orthogonal coordinate system (I, J, K) linked to the sensor.
  • the inflation valve 32 extends longitudinally along an axis I, laterally along an axis J and vertically along an axis K.
  • the axes I, J and K of the definition mark (I, J, K) of the measurement sensor 3 are respectively parallel to the axes X, Y and Z of the definition mark (X, Y, Z) of the wheel.
  • the electronic unit 31 is configured to be mounted on the bottom 20 of the rim 2, so as not to exceed the height of the shoulder 22 and the inflation valve 32 is configured to pass through the orifice for passage of the rim 2.
  • the center of gravity P of the electronic unit 31 is offset radially with respect to the axis I along which the inflation valve 32 extends, by means of which the measurement sensor 3 is fixed to the wheel.
  • radially offset is meant that the center of gravity is offset along the vertical axis K of definition of the measurement sensor 3, and therefore offset along the axis Z of definition of the wheel.
  • the center of gravity P of the electronic unit 31 is located at a smaller distance from the axis X of rotation of the wheel, that is to say from the center of the wheel.
  • Such an offset causes a radial offset of the center of gravity G of the measurement sensor assembly 3.
  • the center of gravity G of the measurement sensor 3 is located a smaller distance from the axis X of rotation of the wheel, than the axis I along which the inflation valve 32 extends.
  • the center of gravity G of the measurement sensor 3 is positioned lower than the axis I along which s 'extends the inflation valve 32.
  • the connecting member 33 allows the articulation of the electronic unit 31 relative to the inflation valve 32, that is to say to allow angular displacement, along one or more axes of rotation, relative between the electronic unit 31 and the inflation valve 32.
  • the connecting member 33 is in the form of a pivot connection, that is to say a connection allowing a rotational movement around a single connection axis.
  • the connecting member 33 comprises a first module 33A fixed to the electronic unit 31 and a second module 33B fixed to the inflation valve 32, the first module 33A and the second module 33B being connected by a pin 33C allowing the relative movement of one relative to the other by rotation about said axis 33 C.
  • the inflation valve 32 being fixed to the rim 2 of the wheel, the electronic unit 31 is articulated so as to be able to pivot about the lateral axis J defining the measurement sensor 3.
  • the center of gravity P of the electronic unit 31 and therefore the center of gravity G of the measurement sensor 3 can thus, thanks to the connecting member 33, pass alternately below and above (according to the terms as defined above) of the plane formed by axes I and J.
  • Such a connecting member 33 advantageously makes it possible to limit the risks of reversal of the measurement sensor 3.
  • the present invention allows the displacement of the measurement sensor 3, and in particular of the electronic unit 31 in order to move the center of gravity G, when the rim 2 on which the measurement sensor 3 is mounted is in rotation.
  • the connecting member 33 allows the electronic unit 31 to pivot by an angle Q of between plus 45 ° and minus 45 °. More preferably, the angle Q is at most equal to plus or minus 45 ° relative to an axis I, making it possible both to limit the risks of reversing the measurement sensor 3 and of preserving the electronic performance of the electronic unit 31.
  • the connecting member 33 is in the form of a ball joint, allowing both the rotation of the electronic unit 3 around the three axes I, J and K of the definition reference of the sensor of measure 3.
  • a ball joint connection making it possible to limit the transmission of forces between the electronic unit
  • the inflation valve 32 also includes in this embodiment, a set of stops making it possible both to limit the rotation of the electronic unit 31 around the axis J by an angle Q equal to at most plus or minus 45 ° and the rotation around the axis I by an angle at most equal to plus or minus 45 ° so as to maintain the electronic performance of the sensor.
  • the measurement sensor 3 further comprises a return spring (not shown), configured to place the electronic unit 31 in a predetermined position called "return".
  • the return spring can be configured to place the electronic unit 31 against the bottom of the rim 2 when the vehicle is stopped and the wheel stops spinning.
  • a predetermined return position advantageously makes it possible to limit the risks of catching the measurement sensor 3 when changing a tire for example, in particular by means of a mechanical arm as described above.
  • the measurement sensor 3 advantageously allows the center of gravity G of the measurement sensor 3 to be left free, which is positioned naturally according to the centrifugal force applied, that is to say according to the speed of rotation of the wheels and therefore the vehicle speed.
  • the connecting member 33 makes it possible to release at least one degree of freedom, making it possible to limit the transmission of forces. Indeed, by way of example, there are in certain countries inflation pumps comprising a pole connected to the inflation valve 32 and allowing the user not to bend over the wheel. However, if the user manipulates the pole, the latter may unintentionally apply a force on the pole which will be transmitted to the inflation valve 32. The force received by the inflation valve
  • the articulation of the measurement sensor 3 at the level of the connecting member 33 makes it possible to limit the transmission of forces between the inflation valve 32 and the electronic unit 31 and thus the stresses on the measurement sensor 3.
  • the connecting member 33 also makes it possible to limit the risks of the measurement sensor 3 overturning while retaining a light mass, since the geometry of the electronic unit 31 is not modified and no additional mass is added on the inflation valve 32.

Abstract

The present invention relates to a measurement sensor (3) intended to be mounted within a wheel of a motor vehicle, said measurement sensor (3) comprising an electronics housing (31), suitable for measuring at least one pressure value for the gases present inside a tire mounted on said wheel, and an inflation valve (32), suitable for allowing the gas to be introduced into the interior of said tire. The measurement sensor (3) comprises at least one connecting member (33) configured to allow the electronics housing (31) to hinge in relation to the inflation valve (32).

Description

Capteur de mesure articulé  Articulated measurement sensor
L’invention se rapporte au domaine des pneus de véhicule et concerne plus particulièrement un capteur de mesure intégré dans un pneu. L’invention vise en particulier à empêcher le retournement d’un tel capteur lorsque le véhicule roule et que la roue tourne.  The invention relates to the field of vehicle tires and relates more particularly to a measurement sensor integrated in a tire. The invention aims in particular to prevent the reversal of such a sensor when the vehicle is moving and the wheel is turning.
De nos jours, il est connu de monter dans chaque roue d’un véhicule automobile un module de mesure permettant de contrôler certains paramètres de la roue. Un tel module de mesure est désigné communément capteur TPMS pour « Tyre Pressure Monitoring System » en langue anglaise, signifiant « Système de surveillance de pression d’un pneu ». Un tel capteur, dont les données sont transmises à un calculateur embarqué dans le véhicule, permet par exemple de mesurer la pression des gaz présents à l’intérieur du pneu ainsi que leur température.  Nowadays, it is known to mount in each wheel of a motor vehicle a measurement module making it possible to control certain parameters of the wheel. Such a measurement module is commonly designated TPMS sensor for "Tire Pressure Monitoring System" in English, meaning "Tire pressure monitoring system". Such a sensor, the data of which is transmitted to a computer on board the vehicle, makes it possible for example to measure the pressure of the gases present inside the tire as well as their temperature.
De manière connue, en référence aux figures 1 et 2, le capteur de mesure 103 comprend un boîtier électronique 131 , permettant de relever les données et de les transmettre au calculateur embarqué, et une valve de gonflage 132 s’étendant selon un axe A, traversant la jante en faisant saillie vers l’extérieur de la roue et qui est apte à coopérer avec une pompe de gonflage.  In known manner, with reference to FIGS. 1 and 2, the measurement sensor 103 comprises an electronic unit 131, making it possible to take the data and transmit them to the on-board computer, and an inflation valve 132 extending along an axis A, crossing the rim projecting towards the outside of the wheel and which is able to cooperate with an inflation pump.
Comme illustré sur la figure 2, une roue comprend un pneu 1 monté de manière coaxiale sur une jante 2. La roue est décrite en référence à un repère orthogonal (X, Y, Z) lié à la roue dans lequel l’axe X correspond à l’axe de rotation de la roue et les axes Y et Z définissent un plan dit « transversal » à l’axe X. Aussi, par le terme « axial », on entend un objet s’étendant suivant l’axe X et « radial » un objet s’étendant dans le plan transversal (Y, Z). L’axe X s’étend de l’intérieur vers l’extérieur en position montée de la roue sur le véhicule.  As illustrated in FIG. 2, a wheel comprises a tire 1 mounted coaxially on a rim 2. The wheel is described with reference to an orthogonal reference (X, Y, Z) linked to the wheel in which the X axis corresponds to the axis of rotation of the wheel and the Y and Z axes define a plane called "transverse" to the X axis. Also, by the term "axial" is meant an object extending along the X axis and "Radial" an object extending in the transverse plane (Y, Z). The X axis extends from the inside to the outside in the wheel mounted position on the vehicle.
La jante 2 présente une forme cylindrique comprenant une surface latérale appelée « fond 20 » de la jante 2 de laquelle s’étendent de part et d’autre de la jante 2 deux épaulements 21 , 22, sur lesquels reposent le pneu 1 , et deux parois 23, 24 constituant les faces latérales de la jante 2. L’épaulement 22 et la paroi 24 latérale sont destinés à être positionnés à l’extérieur de la roue et comporte un orifice permettant le passage de la valve de gonflage 132, de manière à ce que celle-ci traverse la jante 2 et fasse saillie vers l’extérieur de la roue. Un tel orifice de passage est positionné de manière standard sur la jante 2, afin d’harmoniser l’emplacement de la valve de gonflage 132 quels que soient le type ou les dimensions de la jante 2. Un tel emplacement prédéterminé se trouve ainsi à une distance radiale du fond 20 de jante 2 prédéterminée et connue. Le boîtier électronique 131 est configuré pour être positionné sur le fond 20 de jante 2 derrière l’épaulement 22 de sorte à ne pas dépasser la hauteur dudit épaulement 22 et éviter ainsi l’arrachage ou l’endommagement du capteur de mesure 103 lors d’un changement de pneu 1 , notamment au moyen d’un bras mécanique. En effet, un tel bras mécanique tourne le long de chaque épaulement 21 , 22 de manière à insérer entièrement le pneu 1 derrière la paroi 23, 24 latérale. Aussi, lors d’une telle opération, le bras mécanique pourrait accrocher le capteur de mesure 103 et l’endommager si celui-ci dépassait la hauteur de l’épaulement 22. The rim 2 has a cylindrical shape comprising a lateral surface called “bottom 20” of the rim 2 from which extend on either side of the rim 2 two shoulders 21, 22, on which the tire 1 rests, and two walls 23, 24 constituting the lateral faces of the rim 2. The shoulder 22 and the lateral wall 24 are intended to be positioned outside the wheel and have an orifice allowing the inflation valve 132 to pass, so that it crosses the rim 2 and protrudes outward from the wheel. Such a passage orifice is positioned in a standard manner on the rim 2, in order to harmonize the location of the inflation valve 132 whatever the type or dimensions of the rim 2. Such a predetermined location is thus at a radial distance from the predetermined and known rim bottom 20 2. The electronic unit 131 is configured to be positioned on the rim base 20 behind the shoulder 22 so as not to exceed the height of said shoulder 22 and thus avoid the tearing or damage of the measurement sensor 103 during a change of tire 1, in particular by means of a mechanical arm. Indeed, such a mechanical arm rotates along each shoulder 21, 22 so as to fully insert the tire 1 behind the side wall 23, 24. Also, during such an operation, the mechanical arm could catch the measurement sensor 103 and damage it if it exceeded the height of the shoulder 22.
Cependant, du fait de l’emplacement prédéterminé de l’orifice de passage de la valve de gonflage 132 sur la jante 2 et du positionnement du boîtier électronique 131 sous l’épaulement 22, le positionnement de la valve de gonflage 132 en vis-à-vis de l’orifice de passage et le positionnement du boîtier électronique 131 sur le fond 20 de jante 2 entraîne un décalage radial du boîtier électronique 131 par rapport à la valve de gonflage 132 afin de maintenir le boîtier électronique 131 sous l’épaulement 22.  However, due to the predetermined location of the opening for the inflation valve 132 on the rim 2 and the positioning of the electronic unit 131 under the shoulder 22, the positioning of the inflation valve 132 opposite screw of the passage orifice and the positioning of the electronic unit 131 on the bottom 20 of the rim 2 causes a radial offset of the electronic unit 131 relative to the inflation valve 132 in order to maintain the electronic unit 131 under the shoulder 22 .
Ce faisant, comme cela est représenté sur la figure 3, le centre de gravité G du capteur de mesure 103 se retrouve décalé entre l’axe A de la valve de gonflage 132, qui s’étend selon un axe B, parallèle à l’axe X et le fond 20 de jante 2, ce qui présente un inconvénient en cas de rotation de la roue.  In doing so, as shown in FIG. 3, the center of gravity G of the measurement sensor 103 is found offset between the axis A of the inflation valve 132, which extends along an axis B, parallel to the axis X and the bottom 20 of rim 2, which has a drawback in the event of rotation of the wheel.
En effet, quand la roue tourne, l’effet giratoire génère un effort F centrifuge, c’est-à-dire un effort radial, qui entraine le centre de gravité P du boîtier électronique 131 vers la périphérie de la roue, entraînant ainsi le boîtier électronique 131 en rotation autour de l’axe B, comme cela est représenté sur la figure 4. Un tel effort F centrifuge peut entraîner le retournement du capteur de mesure 103, ce qui présente l’inconvénient de générer des une baisse significative des performances électroniques du capteur de mesure 103 voire des disfonctionnements, comme par exemple des erreurs de lecture ou de transmission des données.  In fact, when the wheel turns, the gyratory effect generates a centrifugal force F, that is to say a radial force, which drives the center of gravity P of the electronic unit 131 towards the periphery of the wheel, thus causing the electronic unit 131 rotating around the axis B, as shown in FIG. 4. Such a centrifugal force F can cause the measurement sensor 103 to turn over, which has the drawback of generating a significant drop in performance electronic sensors 103 or even malfunctions, such as reading or data transmission errors.
Dans une première solution proposée dans l’état de l’art, le capteur de mesure 103 comprend une valve de gonflage 132 plus lourde de manière à déporter le centre de gravité P de l’ensemble du capteur de mesure 103 sur la valve de gonflage 132, vers l’extérieur de la roue. Lorsque la valve de gonflage 132 est entraînée sous l’effort centrifuge de rotation de la roue, le boîtier électronique 131 est ainsi plaqué contre le fond 20 de jante 2, empêchant son retournement. Cependant, l’élévation de la masse de la valve de gonflage 132 entraîne l’apparition de contraintes notamment au niveau de la jonction entre la valve de gonflage 132 et la jante 2, ce qui peut entraîner une détérioration rapide du capteur de mesure 103. De plus, l’alourdissement du capteur de mesure 103 présenté un inconvénient majeur, puisque les technologies actuelles s’orientent de plus en plus vers un allègement de l’ensemble des équipements montés dans un véhicule afin d’améliorer les performances de ce dernier tout en limitant la consommation énergétique de la chaîne de traction. In a first solution proposed in the state of the art, the measurement sensor 103 comprises a heavier inflation valve 132 so as to offset the center of gravity P of the assembly of the measurement sensor 103 on the inflation valve 132, towards the outside of the wheel. When the inflation valve 132 is driven under the centrifugal force of rotation of the wheel, the electronic unit 131 is thus pressed against the bottom 20 of the rim 2, preventing its overturning. However, the increase in the mass of the inflation valve 132 leads to the appearance of stresses in particular at the junction between the inflation valve 132 and the rim 2, which can cause rapid deterioration of the measurement sensor 103. In addition, the weighing down of the measurement sensor 103 presents a major drawback, since current technologies are moving more and more towards a reduction in all of the equipment installed. in a vehicle in order to improve its performance while limiting the energy consumption of the traction chain.
Dans une deuxième solution, il est connu d’ajouter des butées (non représentées) de part et d’autre du boîtier électronique 131 , qui entrent en contact avec le fond 20 de jante 2 lorsque le boîtier électronique 131 est entraîné en rotation, empêchant ainsi son retournement. Cependant, un tel boîtier électronique 131 nécessite d’être adapté à différents types de véhicule et notamment à différents types de roue, dans lesquels la distance entre l’orifice de passage de la valve de gonflage 132 et le fond de jante peut varier. Aussi le capteur de mesure 131 nécessite par exemple une adaptation de la longueur des butées pour chaque type de roue, ce qui n’est pas optimal. De plus, de telles « butées » sont fragiles en cas de chute du capteur de mesure 131 avant son montage, ou lors du montage du pneu 1 qui peut les casser en frottant contre le capteur de mesure 103, les butées étant saillantes.  In a second solution, it is known to add stops (not shown) on either side of the electronic unit 131, which come into contact with the rim base 2 when the electronic unit 131 is rotated, preventing thus its reversal. However, such an electronic unit 131 needs to be adapted to different types of vehicle and in particular to different types of wheel, in which the distance between the orifice for passage of the inflation valve 132 and the rim tape can vary. Also the measurement sensor 131 requires for example an adaptation of the length of the stops for each type of wheel, which is not optimal. In addition, such "stops" are fragile in the event of a fall in the measurement sensor 131 before mounting, or during the mounting of the tire 1 which can break them by rubbing against the measurement sensor 103, the stops being protruding.
Dans une troisième solution, il est également connu un capteur de mesure 103 comprenant un boîtier électronique 131 présentant une forme plus allongée (suivant l’axe Y de la figure 1 ) de manière à s’étendre sur une surface plus importante du fond 20 de jante 2 et éviter ainsi son retournement lorsqu’un effort centrifuge s’applique sur le capteur de mesure 103. Cependant, un tel boîtier électronique 131 est également plus lourd, ce qui présente les inconvénients précités.  In a third solution, there is also known a measurement sensor 103 comprising an electronic unit 131 having a more elongated shape (along the axis Y of FIG. 1) so as to extend over a larger surface of the bottom 20 of rim 2 and thus avoid its overturning when a centrifugal force is applied to the measurement sensor 103. However, such an electronic unit 131 is also heavier, which has the abovementioned drawbacks.
L’art antérieur comprend encore le document WO 2018/083424 décrivant un capteur de mesure monté sur une jante présentant une articulation entre le boîtier électronique et la valve du capteur de mesure, l’articulation étant réalisée par un moyen élastique à effet ressort ayant pour but de maintenir le boîtier électronique contre le fond de jante, le document EP 1 449 683 décrivant un capteur de mesure monté sur une jante présentant une articulation entre le boîtier électronique et la valve du capteur de mesure, l’articulation étant réalisée par un ressort de rappel plat ayant pour but de maintenir le boîtier électronique contre le fond de jante, et le document FR 2 909 039 décrivant un capteur de mesure monté sur une jante présentant un élément de raccordement entre le boitier électronique et la valve du capteur de mesure permettant l’ajustement de l’angle entre le boitier électronique et la valve du capteur de mesure lors du montage du capteur de mesure sur la jante. Dans tous ces dispositifs, le contact du boitier électronique du capteur de mesure avec le fond de jante est recherché.  The prior art also includes the document WO 2018/083424 describing a measurement sensor mounted on a rim having an articulation between the electronic unit and the valve of the measurement sensor, the articulation being produced by an elastic spring-effect means having for purpose of holding the electronic unit against the rim tape, document EP 1 449 683 describing a measurement sensor mounted on a rim having a joint between the electronic unit and the valve of the measurement sensor, the joint being produced by a spring flat reminder intended to hold the electronic unit against the rim tape, and document FR 2 909 039 describing a measurement sensor mounted on a rim having a connection element between the electronic unit and the valve of the measurement sensor allowing adjusting the angle between the electronic unit and the valve of the measurement sensor when mounting the sensor measurement on the rim. In all these devices, the contact of the electronic unit of the measurement sensor with the rim tape is sought.
L’invention a donc pour but de remédier au moins en partie à ces inconvénients en proposant une solution simple, fiable et efficace permettant à un capteur monté dans une roue de mesurer les données liées au pneu qu’elles que soient les conditions de roulage du véhicule. L’invention vise en particulier un capteur de mesure léger permettant d’abaisser les contraintes dans les différentes pièces du capteur tout en limitant les risques de retournement du boîtier électronique. The invention therefore aims to remedy these drawbacks at least in part by proposing a simple, reliable and effective solution allowing a sensor mounted in a wheel to measure the data related to the tire, whatever the driving conditions of the vehicle. The invention relates in particular to a light measurement sensor making it possible to lower the stresses in the various parts of the sensor while limiting the risks of overturning of the electronic unit.
A cette fin, l’invention a tout d’abord pour objet un capteur de mesure, destiné à être monté sur une jante d’une roue de véhicule, notamment automobile, ledit capteur de mesure comprenant un boîtier électronique, apte à mesurer au moins une valeur de pression des gaz présents à l’intérieur d’un pneu monté sur ladite jante, et une valve de gonflage, adaptée pour permettre l’introduction dudit gaz à l’intérieur dudit pneu et s’étendant longitudinalement selon un axe I et latéralement selon un axe J, ledit capteur de mesure étant remarquable en ce qu’il comprend au moins un organe de liaison, reliant le boîtier électronique et la valve de gonflage, configuré pour permettre l’articulation dudit boîtier électronique par rapport à ladite valve de gonflage afin de déplacer le centre de gravité du boîtier électronique au-dessus du plan formé par les axes I et J lorsque ledit capteur de mesure est monté dans une jante en rotation.  To this end, the invention firstly relates to a measurement sensor, intended to be mounted on a rim of a vehicle wheel, in particular an automobile wheel, said measurement sensor comprising an electronic unit, capable of measuring at least a pressure value of the gases present inside a tire mounted on said rim, and an inflation valve, adapted to allow the introduction of said gas inside said tire and extending longitudinally along an axis I and laterally along an axis J, said measurement sensor being remarkable in that it comprises at least one connecting member, connecting the electronic unit and the inflation valve, configured to allow the articulation of said electronic unit with respect to said valve inflation in order to move the center of gravity of the electronic unit above the plane formed by the axes I and J when said measurement sensor is mounted in a rotating rim.
Un tel organe de liaison permet avantageusement de limiter voire de supprimer les risques de retournement du capteur de mesure sous l’effet d’un effort centrifuge, permettant avantageusement d’assurer une bonne mesure ainsi qu’une bonne transmission des données à un calculateur embarqué dans le véhicule.  Such a connecting member advantageously makes it possible to limit or even eliminate the risks of the measurement sensor overturning under the effect of a centrifugal force, advantageously making it possible to ensure good measurement as well as good data transmission to an onboard computer in the vehicle.
De manière préférée, l’organe de liaison est configuré pour permettre une liaison pivot, de manière à permettre un déplacement relatif entre le boîtier électronique et la valve de gonflage autour d’un axe commun permettant notamment de limiter la transmission d’effort entre le boîtier électronique et la valve de gonflage.  Preferably, the connecting member is configured to allow a pivot connection, so as to allow relative movement between the electronic unit and the inflation valve around a common axis making it possible in particular to limit the transmission of force between the electronic unit and inflation valve.
De manière alternative, l’organe de liaison est configuré pour permettre une liaison rotule, permettant ainsi de libérer la rotation relative du boîtier électronique par rapport à la valve de gonflage suivant les trois axes d’un repère de définition du capteur de mesure.  Alternatively, the connecting member is configured to allow a ball joint connection, thus making it possible to release the relative rotation of the electronic unit relative to the inflation valve along the three axes of a definition mark of the measurement sensor.
Selon un aspect préféré de l’invention, le capteur de mesure comprend au moins un ressort de rappel configuré pour placer le boîtier électronique dans une position prédéterminée par rapport à la valve de gonflage. Ceci permet avantageusement de s’assurer du positionnement du boîtier électronique lorsque le véhicule est à l’arrêt, notamment après avoir roulé. Un tel ressort de rappel permet en outre de s’assurer que le capteur de mesure ne risque pas d’être endommagé par exemple lors du démontage du pneu.  According to a preferred aspect of the invention, the measurement sensor comprises at least one return spring configured to place the electronic unit in a predetermined position relative to the inflation valve. This advantageously makes it possible to ensure the positioning of the electronic unit when the vehicle is stationary, in particular after driving. Such a return spring also makes it possible to ensure that the measurement sensor does not risk being damaged, for example during the dismantling of the tire.
Avantageusement, l’organe de liaison comprend au moins une butée afin de s’assurer que le boîtier électronique ne se désaxe pas ou peu.  Advantageously, the connecting member comprises at least one stop in order to ensure that the electronic unit does not offset little or no.
L’invention a également pour objet une jante pour roue de véhicule, notamment automobile, comprenant un capteur de mesure tel que décrit précédemment, dont la valve de gonflage est montée dans un orifice formé dans ladite jante, le capteur de mesure étant configuré pour déplacer le centre de gravité du boitier électronique radialement au-delà de l’axe longitudinal de la valve de gonflage sous l’effet de la force centrifuge lorsque la jante est en rotation. Cela permet de déplacer le boîtier électronique radialement vers l’extérieur de la roue dans une position stable, évitant ainsi son retournement. The subject of the invention is also a rim for a vehicle wheel, in particular a motor vehicle wheel, comprising a measurement sensor as described above, whose inflation valve is mounted in an orifice formed in said rim, the measurement sensor being configured to move the center of gravity of the electronic unit radially beyond the longitudinal axis of the inflation valve under the effect of the centrifugal force when the rim is rotating. This allows the electronic unit to be moved radially outward from the wheel in a stable position, thus preventing it from overturning.
Selon un aspect de l’invention, la jante s’étendant selon un axe de rotation et comprenant une surface latérale (fond de jante) s’étendant circonférentiellement depuis ledit axe de rotation, l’organe de liaison permettant une liaison pivot, ledit organe de liaison permet une rotation du boîtier électronique par rapport à la valve de gonflage autour d’un axe parallèle à un axe tangent à ladite surface latérale de la jante. Une telle liaison pivot permet ainsi d’autoriser le déplacement du centre de gravité du capteur de mesure de part et d’autre d’un plan tangentielle à la surface latérale de la jante et comprenant l’axe longitudinal de la valve de gonflage.  According to one aspect of the invention, the rim extending along an axis of rotation and comprising a lateral surface (rim tape) extending circumferentially from said axis of rotation, the connecting member allowing a pivot connection, said member connecting allows rotation of the electronic unit relative to the inflation valve about an axis parallel to an axis tangent to said lateral surface of the rim. Such a pivot link thus makes it possible to allow the displacement of the center of gravity of the measurement sensor on either side of a plane tangential to the lateral surface of the rim and comprising the longitudinal axis of the inflation valve.
De manière préférée, l’organe de liaison comprenant au moins une butée, ladite butée est configurée pour limiter la rotation du boîtier électronique par rapport à la valve de gonflage à un angle de plus ou moins 45° autour dudit axe parallèle audit axe tangent à ladite surface latérale. Une telle butée permet avantageusement d’autoriser le pivotement relatif du boîtier électronique par rapport à la valve de gonflage tout en s’assurant du non retournement du boîtier électronique, qui ne peut se retrouver désaxé suivant un angle de plus ou moins 45°, au-delà duquel son bon fonctionnement ne pourrait être assuré.  Preferably, the connecting member comprising at least one stop, said stop is configured to limit the rotation of the electronic unit relative to the inflation valve at an angle of plus or minus 45 ° around said axis parallel to said axis tangent to said lateral surface. Such a stop advantageously allows the relative pivoting of the electronic unit relative to the inflation valve while ensuring that the electronic unit does not overturn, which cannot be offset at an angle of plus or minus 45 °, at beyond which its proper functioning could not be guaranteed.
Selon une forme de réalisation, ladite jante s’étendant selon un axe de rotation et l’organe de liaison permettant une liaison rotule, l’organe de liaison comprend au moins une butée configurée pour limiter la rotation du boîtier électronique à un angle de plus ou moins 45° autour d’un axe parallèle audit axe de rotation de la jante, permettant avantageusement de limiter la transmission des efforts entre les différentes pièces du capteur de mesure.  According to one embodiment, said rim extending along an axis of rotation and the connecting member allowing a ball joint connection, the connecting member comprises at least one stop configured to limit the rotation of the electronic unit to an angle of more or less 45 ° around an axis parallel to said axis of rotation of the rim, advantageously making it possible to limit the transmission of forces between the different parts of the measurement sensor.
L’invention se rapporte également à une roue pour véhicule, notamment automobile, comprenant une jante telle que décrite ci-avant.  The invention also relates to a wheel for a vehicle, in particular a motor vehicle, comprising a rim as described above.
Enfin, l’invention concerne un véhicule, notamment automobile, comprenant au moins une roue telle que décrite ci-avant.  Finally, the invention relates to a vehicle, in particular a motor vehicle, comprising at least one wheel as described above.
La figure 1 illustre schématiquement un capteur de mesure de l’art antérieur. Figure 1 schematically illustrates a measurement sensor of the prior art.
La figure 2 est une représentation schématique du positionnement du capteur de mesure de la figure 1 sur une jante d’une roue d’un véhicule. FIG. 2 is a schematic representation of the positioning of the measurement sensor of FIG. 1 on a rim of a wheel of a vehicle.
La figure 3 illustre schématiquement la position des centres de gravité d’un boîtier électronique et d’une valve de gonflage du capteur de mesure de la figure 1. La figure 4 illustre schématiquement un effort centrifuge appliqué sur le capteur de mesure de la figure 1 lorsque la roue du véhicule tourne, ainsi que l’effet de retournement du boîtier électronique induit par un tel effort centrifuge. FIG. 3 schematically illustrates the position of the centers of gravity of an electronic unit and of an inflation valve of the measurement sensor of FIG. 1. FIG. 4 schematically illustrates a centrifugal force applied to the measurement sensor of FIG. 1 when the vehicle wheel turns, as well as the inversion effect of the electronic unit induced by such a centrifugal force.
La figure 5 représente schématiquement l’installation d’un capteur de mesure selon l’invention sur une jante d’une roue d’un véhicule.  FIG. 5 schematically represents the installation of a measurement sensor according to the invention on a rim of a wheel of a vehicle.
La figure 6 est une représentation schématique d’une forme de réalisation d’un capteur de mesure selon l’invention.  FIG. 6 is a schematic representation of an embodiment of a measurement sensor according to the invention.
La figure 7 illustre schématiquement l’articulation entre un boîtier électronique et une valve de gonflage du capteur de mesure de la figure 6.  FIG. 7 schematically illustrates the articulation between an electronic unit and an inflation valve of the measurement sensor of FIG. 6.
Le capteur selon l’invention est présenté ci-après en vue d’une installation dans une roue d’un véhicule automobile. Cependant, toute installation dans un contexte différent, en particulier pour tout type de véhicule dont au moins une roue comprend un capteur susceptible de se retourner du fait d’un effort centrifuge est également visé par la présente invention.  The sensor according to the invention is presented below for installation in a wheel of a motor vehicle. However, any installation in a different context, in particular for any type of vehicle of which at least one wheel comprises a sensor capable of turning over due to centrifugal force is also covered by the present invention.
Comme décrit précédemment, un véhicule automobile comprend généralement quatre roues, chaque roue comprenant, en référence à la figure 5, un pneu 1 monté de manière coaxiale sur une jante 2. Une telle jante 2 présente une portion cylindrique présentant une surface latérale externe désignée « fond » 20 de jante 2, de laquelle s’étendent, de part et d’autre, deux épaulements 21 , 22 sur lesquels repose le pneu 1 , et deux parois 23, 24 constituant les faces latérales de la jante 2.  As described above, a motor vehicle generally comprises four wheels, each wheel comprising, with reference to FIG. 5, a tire 1 mounted coaxially on a rim 2. Such a rim 2 has a cylindrical portion having an external lateral surface designated " bottom "20 of rim 2, from which extend, on either side, two shoulders 21, 22 on which the tire 1 rests, and two walls 23, 24 constituting the lateral faces of rim 2.
Le capteur de mesure 3 selon l’invention est configuré pour être monté sur la jante 2 de la roue de manière analogue à l’art antérieur. Autrement dit, le capteur de mesure 3 est configuré pour être monté sur le fond 20 de jante 2 derrière l’épaulement 22, en face d’un orifice de passage 2A, comme cela est représenté sur la figure 5.  The measurement sensor 3 according to the invention is configured to be mounted on the rim 2 of the wheel in a similar manner to the prior art. In other words, the measurement sensor 3 is configured to be mounted on the bottom 20 of the rim 2 behind the shoulder 22, opposite a passage orifice 2A, as shown in FIG. 5.
Dans cet exemple, la roue est décrite en référence à un repère orthogonal (X, Y, Z) lié à la roue dans lequel l’axe X correspond à l’axe de rotation de la jante 2 et de la roue et les axes Y et Z définissent un plan dit « transversal » à l’axe X. Aussi, par le terme « axial », on entend un objet s’étendant suivant l’axe X et « radial » un objet s’étendant dans le plan transversal (Y, Z). L’axe X s’étend de l’intérieur vers l’extérieur en position montée de la roue sur le véhicule.  In this example, the wheel is described with reference to an orthogonal coordinate system (X, Y, Z) linked to the wheel in which the X axis corresponds to the axis of rotation of the rim 2 and of the wheel and the Y axes and Z define a plane called "transverse" to the X axis. Also, by the term "axial", we mean an object extending along the X axis and "radial" an object extending in the transverse plane ( Y, Z). The X axis extends from the inside to the outside in the wheel mounted position on the vehicle.
Un tel capteur de mesure 3 est configuré notamment pour mesurer la pression des gaz présents à l’intérieur du pneu 1. Dans un exemple de réalisation, le capteur de mesure 3 se présente sous la forme d’un capteur TPMS connu de l’homme du métier et configuré pour mesurer par exemple la pression ou la température des gaz à l’intérieur du pneu 1 et pour envoyer de telles mesures à un calculateur embarqué dans le véhicule. Ce document présente l’exemple d’un capteur TPMS, cependant il va de soi que le capteur de mesure 3 pourrait tout aussi bien se présenter sous la forme d’un capteur différent configuré pour mesurer tout autre paramètre de la roue. Such a measurement sensor 3 is configured in particular to measure the pressure of the gases present inside the tire 1. In an exemplary embodiment, the measurement sensor 3 is in the form of a TPMS sensor known to man of the trade and configured to measure for example the pressure or the temperature of the gases inside the tire 1 and to send such measurements to a computer on board the vehicle. This document presents the example of a TPMS sensor, however it goes without saying that the sensor measurement 3 could just as easily take the form of a different sensor configured to measure any other parameter of the wheel.
En référence aux figures 6 et 7, le capteur de mesure 3 selon l’invention comprend un boîtier électronique 31 permettant de relever les données et de les transmettre au calculateur embarqué, une valve de gonflage 32, configurée pour traverser la jante 2 de la roue par l’orifice de passage 2A de manière à s’étendre en saillie vers l’extérieur de la jante 2, et un organe de liaison 33, configuré pour permettre l’articulation du boîtier électronique 31 par rapport à la valve de gonflage 32.  With reference to FIGS. 6 and 7, the measurement sensor 3 according to the invention comprises an electronic unit 31 making it possible to take the data and transmit them to the on-board computer, an inflation valve 32, configured to pass through the rim 2 of the wheel by the passage orifice 2A so as to project outwardly from the rim 2, and a connecting member 33, configured to allow articulation of the electronic unit 31 relative to the inflation valve 32.
Comme cela est présenté sur les figures 6 et 7, le capteur de mesure 3 est décrit dans un repère orthogonal (I, J, K) lié au capteur. Dans un tel repère, la valve de gonflage 32 s’étend longitudinalement selon un axe I, latéralement selon un axe J et verticalement selon un axe K. Aussi, lorsque le capteur de mesure 3 est monté sur la roue, les axes I, J et K du repère de définition (I, J, K) du capteur de mesure 3 sont respectivement parallèles aux axes X, Y et Z du repère de définition (X, Y, Z) de la roue.  As presented in FIGS. 6 and 7, the measurement sensor 3 is described in an orthogonal coordinate system (I, J, K) linked to the sensor. In such a reference, the inflation valve 32 extends longitudinally along an axis I, laterally along an axis J and vertically along an axis K. Also, when the measurement sensor 3 is mounted on the wheel, the axes I, J and K of the definition mark (I, J, K) of the measurement sensor 3 are respectively parallel to the axes X, Y and Z of the definition mark (X, Y, Z) of the wheel.
Dans cet exemple, le boîtier électronique 31 est configuré pour être monté sur le fond 20 de jante 2, de manière à ne pas dépasser la hauteur de l’épaulement 22 et la valve de gonflage 32 est configurée pour traverser l’orifice de passage de la jante 2. Aussi, comme cela est représenté sur la figure 6, le centre de gravité P du boîtier électronique 31 est décalé radialement par rapport à l’axe I suivant lequel s’étend la valve de gonflage 32, par l’intermédiaire de laquelle le capteur de mesure 3 est fixé à la roue. Par l’expression « décalé radialement », on entend que le centre de gravité se trouve décalé suivant l’axe K vertical de définition du capteur de mesure 3, et donc décalé suivant l’axe Z de définition de la roue. Lorsque le capteur de mesure 3 est monté sur la roue, le centre de gravité P du boîtier électronique 31 se trouve à une distance plus faible de l’axe X de rotation de la roue, c’est à dire du centre de la roue.  In this example, the electronic unit 31 is configured to be mounted on the bottom 20 of the rim 2, so as not to exceed the height of the shoulder 22 and the inflation valve 32 is configured to pass through the orifice for passage of the rim 2. Also, as shown in FIG. 6, the center of gravity P of the electronic unit 31 is offset radially with respect to the axis I along which the inflation valve 32 extends, by means of which the measurement sensor 3 is fixed to the wheel. By the expression "radially offset" is meant that the center of gravity is offset along the vertical axis K of definition of the measurement sensor 3, and therefore offset along the axis Z of definition of the wheel. When the measurement sensor 3 is mounted on the wheel, the center of gravity P of the electronic unit 31 is located at a smaller distance from the axis X of rotation of the wheel, that is to say from the center of the wheel.
Un tel décalage entraîne un décalage radial du centre de gravité G de l’ensemble de capteur de mesure 3. Autrement dit, lorsque le capteur de mesure 3 est monté sur la roue, le centre de gravité G du capteur de mesure 3 se trouve à une distance plus faible de l’axe X de rotation de la roue, que l’axe I suivant lequel s’étend la valve de gonflage 32. Lorsque la roue est à l’arrêt de sorte que le capteur de mesure 3 se trouve positionné sur le dessus de la roue (lorsque la roue est montée sur le véhicule automobile), comme cela est représenté sur la figure 5, le centre de gravité G du capteur de mesure 3 se trouve positionné plus bas que l’axe I selon lequel s’étend la valve de gonflage 32. Autrement dit, on parlera dans ce document du centre de gravité positionné « en dessous » du plan formé par les axes I et J.  Such an offset causes a radial offset of the center of gravity G of the measurement sensor assembly 3. In other words, when the measurement sensor 3 is mounted on the wheel, the center of gravity G of the measurement sensor 3 is located a smaller distance from the axis X of rotation of the wheel, than the axis I along which the inflation valve 32 extends. When the wheel is stopped so that the measurement sensor 3 is positioned on the top of the wheel (when the wheel is mounted on the motor vehicle), as shown in FIG. 5, the center of gravity G of the measurement sensor 3 is positioned lower than the axis I along which s 'extends the inflation valve 32. In other words, we will speak in this document of the center of gravity positioned "below" the plane formed by the axes I and J.
L’organe de liaison 33 permet l’articulation du boîtier électronique 31 par rapport à la valve de gonflage 32, c’est-à-dire pour autoriser un déplacement angulaire, selon un ou plusieurs axes de rotation, relatif entre le boîtier électronique 31 et la valve de gonflage 32. The connecting member 33 allows the articulation of the electronic unit 31 relative to the inflation valve 32, that is to say to allow angular displacement, along one or more axes of rotation, relative between the electronic unit 31 and the inflation valve 32.
De préférence, l’organe de liaison 33 se présente sous la forme d’une liaison pivot, c’est-à-dire une liaison autorisant un mouvement de rotation autour d’un unique axe de liaison. Selon un exemple de réalisation, l’organe de liaison 33 comprend un premier module 33A fixé au boîtier électronique 31 et un deuxième module 33B fixé à la valve de gonflage 32, le premier module 33A et le deuxième module 33B étant reliés par un axe 33C autorisant le déplacement relatif de l’un par rapport à l’autre par rotation autour dudit axe 33 C.  Preferably, the connecting member 33 is in the form of a pivot connection, that is to say a connection allowing a rotational movement around a single connection axis. According to an exemplary embodiment, the connecting member 33 comprises a first module 33A fixed to the electronic unit 31 and a second module 33B fixed to the inflation valve 32, the first module 33A and the second module 33B being connected by a pin 33C allowing the relative movement of one relative to the other by rotation about said axis 33 C.
Dans cet exemple, la valve de gonflage 32 étant fixée à la jante 2 de la roue, le boîtier électronique 31 est articulé de manière à pouvoir pivoter autour de l’axe J latéral de définition du capteur de mesure 3. Autrement dit, le centre de gravité P du boîtier électronique 31 et donc le centre de gravité G du capteur de mesure 3 peuvent ainsi, grâce à l’organe de liaison 33, passés alternativement en dessous et au-dessus (suivant les termes tels que définis précédemment) du plan formé par les axes I et J. Un tel organe de liaison 33 permet avantageusement de limiter les risques de retournement du capteur de mesure 3. Ainsi, contrairement aux dispositifs de l’art antérieur qui tendent à plaquer le ce pteur de mesure sur le fond de jante, la présente invention permet le déplacement du capteur de mesure 3, et notamment du boîtier électronique 31 afin de déplacer le centre de gravité G, lorsque la jante 2 sur laquelle le capteur de mesure 3 est monté est en rotation.  In this example, the inflation valve 32 being fixed to the rim 2 of the wheel, the electronic unit 31 is articulated so as to be able to pivot about the lateral axis J defining the measurement sensor 3. In other words, the center of gravity P of the electronic unit 31 and therefore the center of gravity G of the measurement sensor 3 can thus, thanks to the connecting member 33, pass alternately below and above (according to the terms as defined above) of the plane formed by axes I and J. Such a connecting member 33 advantageously makes it possible to limit the risks of reversal of the measurement sensor 3. Thus, unlike the devices of the prior art which tend to press this measurement probe on the bottom rim, the present invention allows the displacement of the measurement sensor 3, and in particular of the electronic unit 31 in order to move the center of gravity G, when the rim 2 on which the measurement sensor 3 is mounted is in rotation.
En fonctionnement du véhicule, c’est-à-dire lorsque la roue tourne, en référence à la figure 7, l’effet de l’effort F centrifuge dû au mouvement de rotation de la roue entraîne naturellement le centre de gravité G du capteur de mesure 3 et donc le boîtier électronique 31 radialement vers la périphérie de la roue. Aussi, grâce à l’organe de liaison 33 suivant l’invention, lorsque la roue tourne, le boîtier électronique 31 est soulevé du fond 20 de jante 2 et éloigné du centre de la roue. Le centre de gravité P du boîtier électronique 31 et donc le centre de gravité G du capteur de mesure 3 sont déplacés radialement au-dessus du plan formé par les axes I et J. Un tel organe de liaison 33 selon l’invention permet ainsi avantageusement de limiter les contraintes dues à l’effort F centrifuge appliqué sur le capteur de mesure 3, permettant ainsi de limiter la détérioration de ce dernier, par exemple au niveau de la jonction de la valve de gonflage 32 avec la jante 2.  In operation of the vehicle, that is to say when the wheel turns, with reference to FIG. 7, the effect of the centrifugal force F due to the rotational movement of the wheel naturally causes the center of gravity G of the sensor 3 and therefore the electronic unit 31 radially towards the periphery of the wheel. Also, thanks to the connecting member 33 according to the invention, when the wheel turns, the electronic unit 31 is lifted from the bottom 20 of the rim 2 and away from the center of the wheel. The center of gravity P of the electronic unit 31 and therefore the center of gravity G of the measurement sensor 3 are displaced radially above the plane formed by the axes I and J. Such a connecting member 33 according to the invention thus advantageously allows limiting the stresses due to the centrifugal force F applied to the measurement sensor 3, thus making it possible to limit the deterioration of the latter, for example at the junction of the inflation valve 32 with the rim 2.
Selon un aspect préféré de l’invention, toujours en référence à la figure 7, l’organe de liaison 33 permet un pivotement du boîtier électronique 31 d’un angle Q compris entre plus 45° et moins 45°. De préférence encore, l’angle Q est égal au maximum à plus ou moins 45 ° par rapport à un l’axe I, permettant à la fois de limiter les risques de retournement du capteur de mesure 3 et de conserver les performances électroniques du boîtier électronique 31. According to a preferred aspect of the invention, still with reference to FIG. 7, the connecting member 33 allows the electronic unit 31 to pivot by an angle Q of between plus 45 ° and minus 45 °. More preferably, the angle Q is at most equal to plus or minus 45 ° relative to an axis I, making it possible both to limit the risks of reversing the measurement sensor 3 and of preserving the electronic performance of the electronic unit 31.
Dans une deuxième forme de réalisation, l’organe de liaison 33 se présente sous la forme d’une liaison rotule, autorisant à la fois la rotation du boîtier électronique 3 autour des trois axes I, J et K du repère de définition du capteur de mesure 3. Une telle liaison rotule, permettant de limiter la transmission des efforts entre le boîtier électronique In a second embodiment, the connecting member 33 is in the form of a ball joint, allowing both the rotation of the electronic unit 3 around the three axes I, J and K of the definition reference of the sensor of measure 3. Such a ball joint connection, making it possible to limit the transmission of forces between the electronic unit
31 et la valve de gonflage 32, comprend également dans cette forme de réalisation, un ensemble de butées permettant à la fois de limiter la rotation du boîtier électronique 31 autour de l’axe J d’un angle Q égal au maximum à plus ou moins 45° et la rotation autour de l’axe I d’un angle au maximum égal à plus ou moins 45° de manière à conserver les performances électroniques du capteur. 31 and the inflation valve 32, also includes in this embodiment, a set of stops making it possible both to limit the rotation of the electronic unit 31 around the axis J by an angle Q equal to at most plus or minus 45 ° and the rotation around the axis I by an angle at most equal to plus or minus 45 ° so as to maintain the electronic performance of the sensor.
De manière optionnelle, le capteur de mesure 3 comprend en outre un ressort de rappel (non représenté), configuré pour placer le boîtier électronique 31 dans une position prédéterminée dite « de rappel ». A titre d’exemple, le ressort de rappel peut être configuré pour placer le boîtier électronique 31 contre le fond 20 de jante 2 lorsque le véhicule est à l’arrêt et que la roue cesse de tourner. Une telle position prédéterminée de rappel, permet avantageusement de limiter les risques d’accrochage du capteur de mesure 3 lors du changement d’un pneu par exemple, notamment au moyen d’un bras mécanique comme décrit précédemment.  Optionally, the measurement sensor 3 further comprises a return spring (not shown), configured to place the electronic unit 31 in a predetermined position called "return". For example, the return spring can be configured to place the electronic unit 31 against the bottom of the rim 2 when the vehicle is stopped and the wheel stops spinning. Such a predetermined return position advantageously makes it possible to limit the risks of catching the measurement sensor 3 when changing a tire for example, in particular by means of a mechanical arm as described above.
Le capteur de mesure 3 selon l’invention permet avantageusement de laisser libre le centre de gravité G du capteur de mesure 3 qui se positionne naturellement selon l’effort centrifuge appliqué, c’est à dire selon la vitesse de rotation des roues et donc la vitesse du véhicule. L’organe de liaison 33 permet de libérer au moins un degré de liberté, permettant de limiter la transmission d’efforts. En effet, à titre d’exemple, il existe dans certains pays des pompes de gonflage comprenant une perche reliée à la valve de gonflage 32 et permettant à l’utilisateur de ne pas se pencher sur la roue. Cependant si l’utilisateur manipule la perche, ce dernier peut involontairement appliquer une force sur la perche qui sera transmise à la valve de gonflage 32. L’effort reçu par la valve de gonflage The measurement sensor 3 according to the invention advantageously allows the center of gravity G of the measurement sensor 3 to be left free, which is positioned naturally according to the centrifugal force applied, that is to say according to the speed of rotation of the wheels and therefore the vehicle speed. The connecting member 33 makes it possible to release at least one degree of freedom, making it possible to limit the transmission of forces. Indeed, by way of example, there are in certain countries inflation pumps comprising a pole connected to the inflation valve 32 and allowing the user not to bend over the wheel. However, if the user manipulates the pole, the latter may unintentionally apply a force on the pole which will be transmitted to the inflation valve 32. The force received by the inflation valve
32 sera d’autant plus important que la perche est longue du fait d’un important bras de levier. Aussi, l’articulation du capteur de mesure 3 au niveau de l’organe de liaison 33 permet de limiter la transmission des efforts entre la valve de gonflage 32 et le boîtier électronique 31 et ainsi les contraintes sur le capteur de mesure 3. 32 will be all the more important as the pole is long because of an important lever arm. Also, the articulation of the measurement sensor 3 at the level of the connecting member 33 makes it possible to limit the transmission of forces between the inflation valve 32 and the electronic unit 31 and thus the stresses on the measurement sensor 3.
L’organe de liaison 33 permet en outre de limiter les risques de retournement du capteur de mesure 3 tout en conservant une masse légère, puisque la géométrie du boîtier électronique 31 n’est pas modifiée et qu’aucune masse supplémentaire n’est ajoutée sur la valve de gonflage 32.  The connecting member 33 also makes it possible to limit the risks of the measurement sensor 3 overturning while retaining a light mass, since the geometry of the electronic unit 31 is not modified and no additional mass is added on the inflation valve 32.

Claims

REVENDICATIONS
1. Capteur de mesure (3), destiné à être monté sur une jante (2) d’une roue de véhicule, notamment automobile, ledit capteur de mesure (3) comprenant un boîtier électronique (31 ), apte à mesurer au moins une valeur de pression des gaz présents à l’intérieur d’un pneu (1 ) monté sur ladite jante (2), et une valve de gonflage (32), adaptée pour permettre l’introduction dudit gaz à l’intérieur dudit pneu (1 ) et s’étendant longitudinalement selon un axe I et latéralement selon un axe J, ledit capteur de mesure (3) étant caractérisé en ce qu’il comprend au moins un organe de liaison (33), reliant le boîtier électronique (31 ) et la valve de gonflage (32), configuré pour permettre l’articulation dudit boîtier électronique (31 ) par rapport à ladite valve de gonflage (32) afin de déplacer le centre de gravité du boîtier électronique (31 ) au-dessus du plan formé par les axes I et J lorsque ledit capteur de mesure (3) est monté dans une jante (2) en rotation. 1. Measurement sensor (3), intended to be mounted on a rim (2) of a vehicle wheel, in particular an automobile wheel, said measurement sensor (3) comprising an electronic unit (31), capable of measuring at least one pressure value of the gases present inside a tire (1) mounted on said rim (2), and an inflation valve (32), adapted to allow the introduction of said gas inside said tire (1 ) and extending longitudinally along an axis I and laterally along an axis J, said measurement sensor (3) being characterized in that it comprises at least one connecting member (33), connecting the electronic unit (31) and the inflation valve (32), configured to allow articulation of said electronic unit (31) relative to said inflation valve (32) in order to move the center of gravity of the electronic unit (31) above the plane formed by axes I and J when said measurement sensor (3) is mounted in a rim ( 2) in rotation.
2. Capteur de mesure (3) selon la revendication 1 , dans lequel l’organe de liaison (33) est configuré pour permettre une liaison pivot. 2. Measuring sensor (3) according to claim 1, wherein the connecting member (33) is configured to allow a pivot connection.
3. Capteur de mesure (3) selon la revendication 1 , dans lequel l’organe de liaison (33) est configuré pour permettre une liaison rotule. 3. Measurement sensor (3) according to claim 1, in which the connecting member (33) is configured to allow a ball joint connection.
4. Capteur de mesure (3) selon l’une des revendications précédentes, ledit capteur de mesure (3) comprenant un ressort de rappel configuré pour placer le boîtier électronique (31 ) dans une position prédéterminée par rapport à la valve de gonflage (32). 4. Measurement sensor (3) according to one of the preceding claims, said measurement sensor (3) comprising a return spring configured to place the electronic unit (31) in a predetermined position relative to the inflation valve (32 ).
5. Capteur de mesure (3) selon l’une des revendications précédentes, dans lequel l’organe de liaison (33) comprend au moins une butée. 5. Measurement sensor (3) according to one of the preceding claims, in which the connecting member (33) comprises at least one stop.
6. Jante (2) pour roue de véhicule, notamment automobile, comprenant un capteur de mesure (3) selon l’une des revendications précédentes, dont la valve de gonflage (32) est montée dans un orifice (2A) formé dans ladite jante (2), le capteur de mesure (3) étant configuré pour déplacer le centre de gravité (P) du boitier électronique (31 ) radialement au-delà de l’axe longitudinal de la valve de gonflage (32) sous l’effet de la force centrifuge lorsque la jante est en rotation. 6. Rim (2) for a vehicle wheel, in particular a motor vehicle wheel, comprising a measurement sensor (3) according to one of the preceding claims, the inflation valve (32) of which is mounted in an orifice (2A) formed in said rim (2), the measurement sensor (3) being configured to move the center of gravity (P) of the electronic unit (31) radially beyond the longitudinal axis of the inflation valve (32) under the effect of centrifugal force when the rim is rotating.
7. Jante (2) selon la revendication précédente, dans lequel, la jante (2) s’étendant selon un axe (X) de rotation et comprenant une surface latérale (20) s’étendant circonférentiellement depuis ledit axe (X) de rotation et l’organe de liaison (33) permettant une liaison pivot, ledit organe de liaison (33) permet une rotation du boîtier électronique (31 ) par rapport à la valve de gonflage (32) autour d’un axe parallèle à un axe tangent à ladite surface latérale (20). 7. Rim (2) according to the preceding claim, in which the rim (2) extending along an axis (X) of rotation and comprising a lateral surface (20) extending circumferentially from said axis (X) of rotation and the connecting member (33) allowing a pivot connection, said connecting member (33) allows a rotation of the electronic unit (31) relative to the inflation valve (32) about an axis parallel to a tangent axis to said side surface (20).
8. Jante (2) selon la revendication 6, dans lequel, ladite jante (2) s’étendant selon un axe (X) de rotation et l’organe de liaison (33) permettant une liaison rotule, l’organe de liaison (33) comprend au moins une butée configurée pour limiter la rotation du boîtier électronique (31 ) à un angle de plus ou moins 45° autour d’un axe parallèle audit axe (X) de rotation de la jante (2). 8. Rim (2) according to claim 6, wherein, said rim (2) extending along an axis (X) of rotation and the connecting member (33) allowing a ball joint connection, the connecting member ( 33) comprises at least one stop configured to limit the rotation of the electronic unit (31) to an angle of plus or minus 45 ° around an axis parallel to said axis (X) of rotation of the rim (2).
9. Roue pour véhicule automobile comprenant une jante (2) selon l’une des revendications 6 à 8. 9. Wheel for a motor vehicle comprising a rim (2) according to one of claims 6 to 8.
10. Véhicule, notamment automobile, comprenant au moins une roue selon la revendication 9. 10. Vehicle, in particular automobile, comprising at least one wheel according to claim 9.
PCT/EP2019/073539 2018-09-04 2019-09-04 Hinged measurement sensor WO2020049023A1 (en)

Applications Claiming Priority (2)

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FR1857922 2018-09-04
FR1857922A FR3085478B1 (en) 2018-09-04 2018-09-04 ARTICULATED MEASUREMENT SENSOR

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1449683A2 (en) 2003-02-24 2004-08-25 Pacific Industrial Co., Ltd. Transmitter mounting structure for tire condition monitoring apparatus
FR2909039A1 (en) 2006-11-29 2008-05-30 Shanghai Baolong Ind Corp SENSOR HOUSING ASSEMBLY FOR TIRE PRESSURE OF A MOTOR VEHICLE.
WO2018083424A1 (en) 2016-11-04 2018-05-11 Continental Automotive France Electronic unit for measuring operating parameters of a vehicle wheel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1449683A2 (en) 2003-02-24 2004-08-25 Pacific Industrial Co., Ltd. Transmitter mounting structure for tire condition monitoring apparatus
FR2909039A1 (en) 2006-11-29 2008-05-30 Shanghai Baolong Ind Corp SENSOR HOUSING ASSEMBLY FOR TIRE PRESSURE OF A MOTOR VEHICLE.
WO2018083424A1 (en) 2016-11-04 2018-05-11 Continental Automotive France Electronic unit for measuring operating parameters of a vehicle wheel

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FR3085478A1 (en) 2020-03-06

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