WO2019115497A1 - Mounting element for receiving a closed pneumatic tire, and mounted assembly comprising such an element with an inflation pressure monitoring system - Google Patents

Mounting element for receiving a closed pneumatic tire, and mounted assembly comprising such an element with an inflation pressure monitoring system Download PDF

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Publication number
WO2019115497A1
WO2019115497A1 PCT/EP2018/084283 EP2018084283W WO2019115497A1 WO 2019115497 A1 WO2019115497 A1 WO 2019115497A1 EP 2018084283 W EP2018084283 W EP 2018084283W WO 2019115497 A1 WO2019115497 A1 WO 2019115497A1
Authority
WO
WIPO (PCT)
Prior art keywords
mounting
tire
contact pressure
closed tire
closed
Prior art date
Application number
PCT/EP2018/084283
Other languages
French (fr)
Inventor
José Merino Lopez
Thomas Ledoux
Florian VILCOT
Original Assignee
Compagnie Generale Des Etablissements Michelin
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 Compagnie Generale Des Etablissements Michelin filed Critical Compagnie Generale Des Etablissements Michelin
Publication of WO2019115497A1 publication Critical patent/WO2019115497A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/12—Appurtenances, e.g. lining bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B21/00—Rims
    • B60B21/02—Rims characterised by transverse section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B25/00—Rims built-up of several main parts ; Locking means for the rim parts
    • B60B25/22—Other apurtenances, e.g. for sealing the component parts enabling the use of tubeless tyres
    • 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
    • B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
    • B60C23/064—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle comprising tyre mounted deformation sensors, e.g. to determine road contact area
    • 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
    • B60C3/00—Tyres characterised by the transverse section
    • B60C3/02—Closed, e.g. toroidal, tyres
    • 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
    • G01L17/005—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies using a sensor contacting the exterior surface, e.g. for measuring deformation
    • 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
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • B60C2019/004—Tyre sensors other than for detecting tyre pressure
    • 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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers

Definitions

  • the present invention relates to a mounted assembly comprising a closed tire and, more particularly, such a mounted assembly, the pressurization of the closed tire can be monitored.
  • European automotive standards require manufacturers to monitor the pressure of each tire. More generally, it is particularly useful for the user of a motor vehicle to be able to be notified in the event of a pressure decrease below a threshold and / or a rapid decrease in pressure in order to maintain optimal operation of the vehicle. motor vehicle (consumption, handling, etc.) and / or be warned of a potential damage to one or more tire (s) of the vehicle.
  • a mounted motor vehicle assembly comprising a mounting member, also called rim, on which is adjusted a closed tire in one (or more) piece (s).
  • a closed tire comprises an internal annular space arranged to be pressurized by an inflation gas.
  • the invention aims to propose a new mounted assembly of a motor vehicle comprising a monitoring system of the pressurization of the inner annular space of the closed tire easily integrable and inexpensive.
  • the invention relates to a mounting element intended to receive a closed tire and comprising a contact pressure detection device arranged to detect the stress exerted by the tire. closed on the mounting element, characterized in that the detection device comprises at least one capacitive-type contact pressure sensor able to measure a pressure applied in a continuous and constant manner.
  • the detection device comprises at least one capacitive-type contact pressure sensor able to measure a pressure applied in a continuous and constant manner.
  • the invention according to the first variant may comprise other optional features.
  • the contact pressure sensor may thus comprise a dielectric chamber for electrically isolating the sensor from the mounting element and in which is mounted a capacitive element.
  • the capacitive element may be formed by a successive stack of a first electrically conductive layer, an electrically insulating layer, a gap and a second electrically conductive layer so that the stress exerted on the second electrically conductive layer causes the signal of the contact pressure sensor to vary.
  • the invention relates to a mounting element intended to receive a closed tire and comprising a contact pressure detection device arranged to detect the stress exerted by the closed tire on the tire.
  • mounting element characterized in that the detection device comprises at least one piezoresistive type contact pressure sensor able to measure a pressure applied in a continuous and constant manner.
  • the closed tire when the closed tire is inflated, it will exert a stress of increasing importance on the contact pressure sensor by deforming it. This deformation will cause a variation of the electrical resistance of the contact pressure sensor able to monitor the pressure of the closed tire.
  • the invention according to the second variant may comprise other optional features.
  • the contact pressure sensor may thus comprise a resistive element formed by a successive stack of a first electrically conductive layer, a layer of piezoresistive material and a second electrically conductive layer so that the stress exerted on the layer of piezoresistive material causes the variation of the signal of the contact pressure sensor.
  • the adaptation of the contact pressure detection device on the mounting element is simple and inexpensive.
  • its advantageous location does not require the development of new dedicated closed pneumatic tires, that is to say adapted for interactions with the mounting element.
  • the implantation at the level of the mounting element also makes it possible to be able to measure the signals of the detection device in a wired manner or not, that is to say with an on-board power source and a wireless communication or not.
  • the invention may also include other optional features.
  • the mounting element comprises a substantially cylindrical peripheral surface on which is mounted the contact pressure detection device which allows to mount the detection device directly to the interface between the mounting member and the closed tire.
  • Each contact pressure sensor is preferably housed in a recess in the periphery of the mounting element which allows each flush or protruding pressure sensor to be mounted on the mounting element and that it does not move. little or no relation to the mounting element.
  • the invention relates to a mounted vehicle assembly comprising a mounting element on which is fitted a closed tire, said closed tire comprising:
  • a radially outer revolution structure provided with a tread
  • a radially inner revolution structure coaxial with the radially outer revolution structure
  • the mounting member is as set forth above, and in that the mounted assembly includes a system for monitoring the pressurization of the inner annular space of the closed tire having the pressure sensing device of the contact to determine the pressurization of the inner annulus according to the stress exerted by the closed tire on the mounting member.
  • the contact pressure measured by the detection device is substantially proportional to the inflation pressure of the inner annular space. It is therefore understood that the monitoring system according to the invention is simple and inexpensive.
  • any closed tire can be used.
  • the pressure in the inner annulus can thus be accurately determined without intervene on the structure of the closed tire and without restriction as to the dimensions of the internal annular space.
  • the invention may also include other optional features.
  • the closed tire is held on the mounting member by the forces resulting from the pressurization of the inner annular space of the closed tire and / or by gluing.
  • a maintenance of the closed tire can be achieved for example by clamping, that is to say a stretching of the closed tire material, during assembly on the mounting element (for example by a section larger external of the mounting element relative to that internal of the closed tire) and / or when inflating the closed tire.
  • the closed tire may be held by an adhesive material against the mounting member.
  • the closed tire is formed in one piece or in several pieces such as for example in EP 0 894 614 and WO 2015/158472.
  • Each sidewall and the tread further comprise a reinforcing reinforcement which can better guarantee the mechanical characteristics of the closed tire during the movements of the motor vehicle.
  • the contact pressure detection device is in contact with the outer face of the radially inner revolution structure of the closed tire which makes it possible to follow all the inflation and deflation of the closed tire.
  • Figure 1 is a schematic side view of the front of a motor vehicle
  • Figure 2 is a schematic cutaway view of an assembly mounted according to the invention
  • Figure 3 is a partial schematic sectional view of an assembly mounted according to the invention centered on a portion of the interface between the closed tire and the mounting element;
  • Figure 4 is a sectional view of a capacitive contact sensor according to the invention.
  • FIG. 5 is a sectional view of a piezoresistive contact sensor according to the invention
  • FIG. 6 is a diagram showing the signal of a contact sensor according to the invention as a function of the inflation pressure of a closed tire and according to its location at the interface between the closed tire and the tire element. mounting or depending on the type of adjustment of the closed tire on the mounting element.
  • orientation terms refer to the orthogonal reference taken with reference to the normal direction of movement of a motor vehicle 2, shown in Figure 2 and in which there are:
  • tire is meant all types of elastic bandages subjected to internal pressure.
  • the invention applies to any type of pneumatic tire, in particular those intended to equip motor vehicles of tourism type, SUV ("Sport Utility Vehicles"), two wheels (in particular motorcycles), planes, industrial vehicles chosen among vans, "Heavy goods vehicles” - that is, metros, buses, road transport vehicles (trucks, tractors, trailers), off-the-road vehicles such as agricultural or civil engineering vehicles - or other vehicles transportation or handling.
  • the invention also applies to non-motorized vehicles such as a trailer, a semi-trailer or a caravan.
  • the invention relates to a mounted assembly 1 of vehicle 2, for example automobile, allowing the monitoring of its good inflation.
  • the mounted assembly 1 comprises a mounting element 3 on which is fitted a closed tire 5.
  • the mounting element 3 also called a mounting wheel or a rim, is a member intended to be attached to the system. suspension (not shown) of the vehicle 2 to make, by its rotation, to advance the latter.
  • the assembly 3 according to the invention may optionally comprise a substantially cylindrical peripheral surface which is adapted to the adjustment of a closed pneumatic tire 5.
  • the closed tire 5 preferably comprises:
  • each flank 10, 11 and / or the rolling strip 8 and / or the radially outer revolution structure 7 and / or the radially inner rotation structure 9 may comprise a reinforcing reinforcement intended to guarantee the mechanical characteristics of the tire. closed tire 5 during the movements of the vehicle 2.
  • the closed tire 5 is held on the mounting element 3 by the forces resulting from the pressurization of the inner annular space 12 of the closed tire 5 and / or by gluing. More precisely, the radially inner rotation structure 9 of the closed tire 5 is fitted on the peripheral surface of the mounting element 3.
  • the mounted assembly 1 comprises a system 13 for monitoring the pressurization of the internal annular space 12 which is not integral with the closed tire 5.
  • a system 13 for monitoring the pressurization of the internal annular space 12 which is not integral with the closed tire 5.
  • it has been chosen to allow an implantation that does not require the development of new dedicated closed pneumatic tires, that is to say modified to receive the surveillance system 13.
  • any closed tire may be fitted to the mounting member 3.
  • the pressure P prevailing in the inner annular space 12 can thus advantageously be determined accurately without affecting the structure of the closed tire 5 and without restriction as to the dimensions of its inner annular space 12.
  • the monitoring system 13 preferably comprises a device 15 for detecting contact pressure mounted on the mounting element 3. More specifically, the detection device 15 is mounted at an interface between the closed tire 5 and the mounting element 3 to determine the pressurization of the inner annular space 12 as a function of the stress C of the closed tire 5 exerted on the mounting element 3.
  • the contact pressure measured by the detection device 15 is substantially proportional to the pressure P of inflation of the space 12 Inner annular of the closed pneumatic tire 5. It is thus clear that the monitoring system 13 according to the invention is simple and inexpensive.
  • the detection device 15 comprises at least one contact pressure sensor 17, for example of the capacitive or piezoresistive type.
  • Each contact pressure sensor 17 may for example be housed in a recess in the peripheral surface of the mounting element 3 as illustrated in FIG. 3.
  • the detection device 15 comprises an acquisition element 16 of each contact pressure sensor 17 intended to collect the signals in a continuous manner or not.
  • FIG. 6 is a diagram representing the signal S of a contact sensor 17 according to the invention as a function of the inflation pressure P of a closed tire and according to its location at the interface between the closed tire and the tire. mounting element or according to the type of adjustment of the closed tire 5.
  • the curve D1 corresponds to the signal of a contact sensor 17 which is placed at an interface (not shown) at which the closed pneumatic tire 5 is clamped on the mounting element 3 and where there is an armature of enhancement. It can be seen that the tightening and the great longitudinal rigidity, at the interface where the sensor 17 is placed, give a signal S which is high even in the absence of pressure P in the internal annular space 12 and then increases at as the pressure P increases in the inner annular space 12.
  • the curve D2 corresponds to the signal of a contact sensor 17 placed at an interface (shown in Figure 3) at which the closed tire. 5 is tightened on the mounting element 3 but does not face any armature of the closed tire 5. It can be seen that the tightening and the lowest longitudinal rigidity, at the interface where the sensor 17 is placed, give a signal S which is low in the absence of pressure P in the inner annular space 12 and then increases, along a slope greater than the curve D1, as the pressure P increases in space 12 annular internal.
  • the curve D3 corresponds to the signal of a contact sensor 17 which is placed at an interface (not shown) at which the closed tire 5 is secured without interference to the mounting element 3 but does not face no armature of the closed tire 5. It can be seen that the absence of clamping and the lower longitudinal stiffness, at the interface where the sensor 17 is placed, give a signal S is zero in the absence of pressure P in the internal annular space 12 up to a certain pressure P and then increases as the pressure P increases in the internal annular space 12. This detection defect at the lower pressures corresponds in fact to a detection offset which begins only when the inflation begins to induce a clamping of the tire 5 against the mounting element 3.
  • the location and mounting are features to be considered in order to optimize the operation of the monitoring system 13.
  • a curve of the D2 type is desired because it makes it possible to detect all the pressure variations P and according to a better precision (more pronounced slope) with respect to that D1 or D3.
  • several sensors 17 may be distributed on the peripheral surface of the mounting element 3 in order to correlate their signal in order to make the monitoring device 13 more reliable.
  • the monitoring system 13 further comprises a module 19 for determining the pressure P for processing the signals collected by the acquisition element 16.
  • the determination module 19 comprises in particular an element 20 for calculating the pressure P cooperating with a support 21 comprising a calibrated database.
  • the calibrated database previously established corresponds to the relationship between the signals measured by each sensor 17 according to different inflation pressures P imposed according to the architecture element 3 of assembly - closed pneumatic tire 5 chosen.
  • the element 20 for calculating the pressure P is therefore capable, for example by successive iterations, of determining, from the calibrated database, a pressure value P in the inner annular space 12 of the closed tire 5.
  • the module 19 for determining the pressure P may also optionally include a pressure recording element 22 P calculated as a function of time to display the time drift of the pressure P of each closed tire 5.
  • the monitoring system 13 could also include a temperature sensor whose signal would also be used by the element 20 for calculating the pressure P from the calibrated database also including different temperatures.
  • the sensors 17 are, preferably, able to measure a pressure applied in a continuous and constant manner. Indeed, they must be able to provide a signal during inflation and deflation of the closed tire 5.
  • the sensors 17 may be of the capacitive and / or piezoresistive type, that is to say only capacitive, only piezoresistive or a mixture of the two.
  • FIG. 4 is a sectional view of a first variant of a capacitive type contact sensor 17 according to the invention.
  • the sensor 17 is integrated in a housing adapted to the mounting element 3. It comprises a dielectric enclosure 23 formed for example of a solid electrically insulating material for electrically isolating the sensor 17 from the mounting element 3.
  • the chamber 23 is provided with a recess 24 in which a capacitive element 25 is mounted.
  • the capacitive element 25 is formed by a successive stack of an electrically conductive layer 26, an electrically insulating layer 27, a gap 28 (for example a space filled with of air) and again of an electrically conductive layer 29.
  • the electrically insulating layer 27 has a relative dielectric permittivity e r ("epsilon") high, for example greater than 1, 5.
  • the deformation zone centered on the surface in contact with the closed tire 5 fills a portion of the gap 28 until touching a portion of the electrically conductive layer 29 with the layer 27 electrically insulating.
  • a contact and stack surface geometry of the capacitive element 25 will be chosen so as to avoid saturation of the sensor 17 at a pressure P lower than the inflation pressure recommended for the closed tire 5.
  • the capacity obtained will be proportional to the contact area of the electrically conductive layer 29 with the electrically insulating layer 27.
  • This capacitance can be, for example, measured simply by positioning it inside a simple LC resonant circuit well known to those skilled in the art included in the acquisition element 16. Indeed, it is known that this type of circuit resonates at a frequency equal to 1 / (2 * PI * root (L * C)). Thus, if the capacity varies, the resonance frequency will vary accordingly. It is therefore possible to evaluate the value of the capacitive element by simply measuring the frequency obtained and then to carry out the pressure measurement using the pressure-determining module 19.
  • a module 19 provided with a microcontroller capable of determining at regular intervals the pressure P rather than continuously to advantageously save the necessary energy.
  • FIG. 5 is a sectional view of a second variant of a piezoresistive type contact sensor 17 according to the invention.
  • the sensor 17 is integrated in a housing adapted to the mounting element 3. It comprises a resistive element 31 formed by a successive stack of an electrically conductive layer 32, a layer 33 of piezoresistive material and again an electrically conductive layer 34.
  • a piezoresistive material such as VELOSTAT® or LINQSTAT® from Adafruit® can be used.
  • the closed tire 5 When the closed tire 5 is inflated, it will exert a constraint C increasingly important on the electrically conductive layer 34 of the sensor 17 by deforming it. This deformation crushes the layer 33 of piezoresistive material between the two electrically conductive layers 32, 34 of the resistive element 31 causing a variation of the signal S of the sensor 17.
  • the resistance obtained will be proportional to the hydrostatic pressure exerted on the layer 33 of piezoresistive material.
  • This resistance can for example, measured simply by positioning it inside a Wheatstone bridge well known to those skilled in the art included in the acquisition element 16.
  • the calculation interval of the determination module 19 is not regular but modifiable depending on the circumstances. For example, in the case where a pressure variation P would be detected, it could be planned to increase the measurement frequency in order to raise reliable and more frequent alerts able in particular to warn as soon as possible of the rapid deflation of the bandage. Closed tire 5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The invention relates to a vehicle mounted assembly (1) comprising a mounting element (3) on which a closed pneumatic tire (5) is fitted. According to the invention, the mounted assembly (1) comprises a system (13) for monitoring the inflation pressure (P) in the closed pneumatic tire (5), said system (13) comprising a device (15) for detecting contact pressure at the interface between the mounting element (3) and the closed pneumatic tire (5) in order to determine the inflation pressure (P) of the closed pneumatic tire (5) as a function of the stress (C) exerted by the closed pneumatic tire (5) on the mounting element (3).

Description

ÉLÉMENT DE MONTAGE DESTINÉ À RECEVOIR UN BANDAGE PNEUMATIQUE FERMÉ ET ENSEMBLE MONTÉ COMPORTANT UN TEL ÉLÉMENT AVEC UN SYSTÈME DE SURVEILLANCE DE PRESSION DE GONFLAGE  MOUNTING ELEMENT FOR RECEIVING CLOSED PNEUMATIC BANDAGE AND MOUNTED ASSEMBLY COMPRISING SUCH ELEMENT WITH INFLATION PRESSURE MONITORING SYSTEM
DOMAINE TECHNIQUE DE L’INVENTION TECHNICAL FIELD OF THE INVENTION
[0001] La présente invention se rapporte à un ensemble monté comportant un bandage pneumatique fermé et, plus particulièrement, un tel ensemble monté dont la pressurisation du bandage pneumatique fermé peut être surveillée.  The present invention relates to a mounted assembly comprising a closed tire and, more particularly, such a mounted assembly, the pressurization of the closed tire can be monitored.
ARRIÈRE-PLAN TECHNIQUE DE L’INVENTION  TECHNICAL BACKGROUND OF THE INVENTION
[0002] Les normes automobiles européennes imposent aux constructeurs un système de surveillance de la pression de chaque bandage pneumatique. Plus généralement, il est particulièrement utile pour l'utilisateur d’un véhicule automobile de pouvoir être averti en cas de diminution de pression en dessous d’un seuil et/ou d’une diminution rapide de la pression afin de maintenir le fonctionnement optimal du véhicule automobile (consommation, tenue de route, etc.) et/ou être averti d’une potentielle avarie sur un (ou plusieurs) bandage(s) pneumatique(s) du véhicule.  [0002] European automotive standards require manufacturers to monitor the pressure of each tire. More generally, it is particularly useful for the user of a motor vehicle to be able to be notified in the event of a pressure decrease below a threshold and / or a rapid decrease in pressure in order to maintain optimal operation of the vehicle. motor vehicle (consumption, handling, etc.) and / or be warned of a potential damage to one or more tire (s) of the vehicle.
[0003] Il est déjà connu, comme par exemple par les documents EP 0 894 614 et WO 2015/158472, un ensemble monté de véhicule automobile comportant un élément de montage, également appelé jante, sur lequel est ajusté un bandage pneumatique fermé en une (ou plusieurs) pièce(s). Un tel bandage pneumatique fermé comporte un espace annulaire interne agencé pour être pressurisée par un gaz de gonflage.  It is already known, for example by the documents EP 0 894 614 and WO 2015/158472, a mounted motor vehicle assembly comprising a mounting member, also called rim, on which is adjusted a closed tire in one (or more) piece (s). Such a closed tire comprises an internal annular space arranged to be pressurized by an inflation gas.
[0004] Dans un tel bandage pneumatique fermé, il est difficile d’intégrer un système de surveillance de la pression de chaque bandage pneumatique. En effet, contrairement au bandage pneumatique classique, l’accès à l’espace annulaire interne peut être réduit et le placement des capteurs à l’intérieur de cet espace annulaire interne peut être difficile. RÉSUMÉ DE L’INVENTION  In such a closed tire, it is difficult to integrate a pressure monitoring system of each tire. Indeed, unlike the conventional tire, access to the inner annulus can be reduced and the placement of the sensors within this inner annulus can be difficult. SUMMARY OF THE INVENTION
[0005] L'invention a pour but de proposer un nouvel ensemble monté de véhicule automobile comportant un système de surveillance de la pressurisation de l’espace annulaire interne du bandage pneumatique fermé facilement intégrable et peu coûteux.  The invention aims to propose a new mounted assembly of a motor vehicle comprising a monitoring system of the pressurization of the inner annular space of the closed tire easily integrable and inexpensive.
[0006] À cet effet, selon une première variante, l’invention se rapporte à un élément de montage destiné à recevoir un bandage pneumatique fermé et comportant un dispositif de détection de pression de contact agencé pour détecter de la contrainte exercée par le bandage pneumatique fermé sur l’élément de montage, caractérisé en ce que le dispositif de détection comporte au moins un capteur de pression de contact du type capacitif apte à mesurer une pression appliquée de façon continue et constante. [0007] Avantageusement selon l'invention, lorsque le bandage pneumatique fermé est gonflé, il va exercer une contrainte de plus en plus importante sur le capteur de pression de contact en le déformant. Cette déformation va entraîner une variation de la capacité du signal du capteur de pression de contact apte à surveiller la pression du bandage pneumatique fermé. For this purpose, according to a first variant, the invention relates to a mounting element intended to receive a closed tire and comprising a contact pressure detection device arranged to detect the stress exerted by the tire. closed on the mounting element, characterized in that the detection device comprises at least one capacitive-type contact pressure sensor able to measure a pressure applied in a continuous and constant manner. Advantageously according to the invention, when the closed tire is inflated, it will exert a stress of increasing importance on the contact pressure sensor by deforming it. This deformation will cause a variation of the signal capacity of the contact pressure sensor capable of monitoring the pressure of the closed tire.
[0008] L’invention selon la première variante peut comporter d’autres caractéristiques optionnelles.  The invention according to the first variant may comprise other optional features.
[0009] Le capteur de pression de contact peut ainsi comporter une enceinte diélectrique destinée à isoler électriquement le capteur de l’élément de montage et dans laquelle est monté un élément capacitif.  The contact pressure sensor may thus comprise a dielectric chamber for electrically isolating the sensor from the mounting element and in which is mounted a capacitive element.
[0010] De plus, l’élément capacitif peut être formé par un empilement successif d’une première couche électriquement conductrice, d’une couche électriquement isolante, d’un interstice puis d’une deuxième couche électriquement conductrice afin que la contrainte exercée sur la deuxième couche électriquement conductrice entraîne la variation du signal du capteur de pression de contact.  In addition, the capacitive element may be formed by a successive stack of a first electrically conductive layer, an electrically insulating layer, a gap and a second electrically conductive layer so that the stress exerted on the second electrically conductive layer causes the signal of the contact pressure sensor to vary.
[0011] Selon une deuxième variante, l’invention se rapporte à un élément de montage destiné à recevoir un bandage pneumatique fermé et comportant un dispositif de détection de pression de contact agencé pour détecter de la contrainte exercée par le bandage pneumatique fermé sur l’élément de montage, caractérisé en ce que le dispositif de détection comporte au moins un capteur de pression de contact du type piézorésistif apte à mesurer une pression appliquée de façon continue et constante.  According to a second variant, the invention relates to a mounting element intended to receive a closed tire and comprising a contact pressure detection device arranged to detect the stress exerted by the closed tire on the tire. mounting element, characterized in that the detection device comprises at least one piezoresistive type contact pressure sensor able to measure a pressure applied in a continuous and constant manner.
[0012] Avantageusement selon l'invention, lorsque le bandage pneumatique fermé est gonflé, il va exercer une contrainte de plus en plus importante sur le capteur de pression de contact en le déformant. Cette déformation va entraîner une variation de la résistance électrique du capteur de pression de contact apte à surveiller la pression du bandage pneumatique fermé. Advantageously according to the invention, when the closed tire is inflated, it will exert a stress of increasing importance on the contact pressure sensor by deforming it. This deformation will cause a variation of the electrical resistance of the contact pressure sensor able to monitor the pressure of the closed tire.
[0013] L’invention selon la deuxième variante peut comporter d’autres caractéristiques optionnelles.  The invention according to the second variant may comprise other optional features.
[0014] Le capteur de pression de contact peut ainsi comporter un élément résistif formé par un empilement successif d’une première couche électriquement conductrice, d’une couche de matériau piézorésistif puis d’une deuxième couche électriquement conductrice afin que la contrainte exercée sur la couche de matériau piézorésistif entraîne la variation du signal du capteur de pression de contact.  The contact pressure sensor may thus comprise a resistive element formed by a successive stack of a first electrically conductive layer, a layer of piezoresistive material and a second electrically conductive layer so that the stress exerted on the layer of piezoresistive material causes the variation of the signal of the contact pressure sensor.
[0015] Avantageusement selon l'invention, quelle que soit la variante, l’adaptation du dispositif de détection de pression de contact sur l’élément de montage est simple et peu coûteuse. De plus, son implantation avantageuse ne nécessite pas de développer de nouveaux bandages pneumatiques fermés dédiés, c'est-à-dire adaptés quant aux interactions avec l’élément de montage. L’implantation au niveau de l’élément de montage permet également de pouvoir mesurer les signaux du dispositif de détection de manière filaire ou non, c'est-à-dire avec une source d’énergie embarquée et une communication sans fil ou non. Advantageously according to the invention, whatever the variant, the adaptation of the contact pressure detection device on the mounting element is simple and inexpensive. In addition, its advantageous location does not require the development of new dedicated closed pneumatic tires, that is to say adapted for interactions with the mounting element. The implantation at the level of the mounting element also makes it possible to be able to measure the signals of the detection device in a wired manner or not, that is to say with an on-board power source and a wireless communication or not.
[0016] L’invention peut également comporter d’autres caractéristiques optionnelles.  The invention may also include other optional features.
[0017] Ainsi, l’élément de montage comporte une surface périphérique sensiblement cylindrique sur laquelle est montée le dispositif de détection de pression de contact ce qui permet de monter le dispositif de détection directement à l’interface entre l’élément de montage et le bandage pneumatique fermé. Thus, the mounting element comprises a substantially cylindrical peripheral surface on which is mounted the contact pressure detection device which allows to mount the detection device directly to the interface between the mounting member and the closed tire.
[0018] Chaque capteur de pression de contact est préférentiellement logé dans un évidement de la périphérie de l’élément de montage ce qui permet de monter chaque capteur de pression affleurant ou en saillie de l’élément de montage et qu’il ne se déplace pas ou peu par rapport à l’élément de montage.  Each contact pressure sensor is preferably housed in a recess in the periphery of the mounting element which allows each flush or protruding pressure sensor to be mounted on the mounting element and that it does not move. little or no relation to the mounting element.
[0019] Enfin, l’invention se rapporte à un ensemble monté de véhicule comportant un élément de montage sur lequel est ajusté un bandage pneumatique fermé, ledit bandage pneumatique fermé comportant :  Finally, the invention relates to a mounted vehicle assembly comprising a mounting element on which is fitted a closed tire, said closed tire comprising:
Une structure de révolution radialement extérieure munie d’une bande de roulement,  A radially outer revolution structure provided with a tread,
Une structure de révolution radialement intérieure coaxiale à la structure de révolution radialement extérieure, et  A radially inner revolution structure coaxial with the radially outer revolution structure, and
Deux flancs, reliant les extrémités axiales des structures de révolution respectivement radialement extérieure et radialement intérieure en délimitant un espace annulaire interne agencé pour être pressurisée par un gaz de gonflage,  Two flanks, connecting the axial ends of the respectively radially outer and radially inner revolution structures, delimiting an internal annular space designed to be pressurized by an inflation gas,
caractérisé en ce que l’élément de montage est tel que présenté plus haut et, en ce que l’ensemble monté comporte un système de surveillance de la pressurisation de l’espace annulaire interne du bandage pneumatique fermé comportant le dispositif de détection de pression de contact afin de déterminer la pressurisation de l’espace annulaire interne en fonction de la contrainte exercée par le bandage pneumatique fermé sur l’élément de montage. characterized in that the mounting member is as set forth above, and in that the mounted assembly includes a system for monitoring the pressurization of the inner annular space of the closed tire having the pressure sensing device of the contact to determine the pressurization of the inner annulus according to the stress exerted by the closed tire on the mounting member.
[0020] Avantageusement selon l'invention, il a été trouvé que, dans un tel ensemble monté, la pression de contact mesurée par le dispositif de détection est sensiblement proportionnelle à la pression de gonflage de l’espace annulaire interne. On comprend donc que le système de surveillance selon l'invention est simple et peu coûteux.  Advantageously according to the invention, it has been found that in such a mounted assembly, the contact pressure measured by the detection device is substantially proportional to the inflation pressure of the inner annular space. It is therefore understood that the monitoring system according to the invention is simple and inexpensive.
[0021] De plus, le système de surveillance étant solidaire préférentiellement de l’élément de montage, n’importe quel bandage pneumatique fermé peut être utilisé. La pression régnant dans l’espace annulaire interne peut ainsi être déterminée avec précision sans intervenir sur la structure du bandage pneumatique fermé et sans restriction quant aux dimensions de l’espace annulaire interne. In addition, the monitoring system is preferentially secured to the mounting member, any closed tire can be used. The pressure in the inner annulus can thus be accurately determined without intervene on the structure of the closed tire and without restriction as to the dimensions of the internal annular space.
[0022] L’invention peut également comporter d’autres caractéristiques optionnelles.  The invention may also include other optional features.
[0023] Le bandage pneumatique fermé est maintenu sur l’élément de montage par les forces résultant de la pressurisation de l’espace annulaire interne du bandage pneumatique fermé et/ou par collage. En effet, un maintien du bandage pneumatique fermé peut être réalisé par exemple par un serrage, c'est-à-dire un étirage de la matière du bandage pneumatique fermé, lors du montage sur l’élément de montage (par exemple par une section externe plus grande de l’élément de montage par rapport à celle interne du bandage pneumatique fermé) et/ou lors du gonflage du bandage pneumatique fermé. Toutefois, en variante ou de manière additionnelle, le bandage pneumatique fermé peut être maintenu par un matériau adhésif contre l’élément de montage. The closed tire is held on the mounting member by the forces resulting from the pressurization of the inner annular space of the closed tire and / or by gluing. Indeed, a maintenance of the closed tire can be achieved for example by clamping, that is to say a stretching of the closed tire material, during assembly on the mounting element (for example by a section larger external of the mounting element relative to that internal of the closed tire) and / or when inflating the closed tire. However, alternatively or additionally, the closed tire may be held by an adhesive material against the mounting member.
[0024] Le bandage pneumatique fermé est formé en une seule pièce ou en plusieurs pièces comme par exemple dans les documents EP 0 894 614 et WO 2015/158472.  The closed tire is formed in one piece or in several pieces such as for example in EP 0 894 614 and WO 2015/158472.
[0025] Chaque flanc et la bande de roulement comportent en outre une armature de renforcement ce qui peut permettre de mieux garantir les caractéristiques mécaniques du bandage pneumatique fermé lors des déplacements du véhicule automobile. Each sidewall and the tread further comprise a reinforcing reinforcement which can better guarantee the mechanical characteristics of the closed tire during the movements of the motor vehicle.
[0026] Le dispositif de détection de pression de contact est en contact avec la face externe de la structure de révolution radialement intérieure du bandage pneumatique fermé ce qui permet de suivre la totalité du gonflage et du dégonflage du bandage pneumatique fermé.  The contact pressure detection device is in contact with the outer face of the radially inner revolution structure of the closed tire which makes it possible to follow all the inflation and deflation of the closed tire.
BRÈVE DESCRIPTION DES DESSINS  BRIEF DESCRIPTION OF THE DRAWINGS
[0027] D’autres particularités et avantages ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :  Other features and advantages will become apparent from the description which is given below, for information only and in no way limitative, with reference to the accompanying drawings, in which:
La figure 1 est une vue schématique de côté de l’avant d’un véhicule automobile ; La figure 2 est une vue schématique en écorché d’un ensemble monté selon l'invention ;  Figure 1 is a schematic side view of the front of a motor vehicle; Figure 2 is a schematic cutaway view of an assembly mounted according to the invention;
La figure 3 est une vue schématique partielle en coupe d’un ensemble monté selon l'invention centrée sur une partie de l’interface entre le bandage pneumatique fermé et l’élément de montage ;  Figure 3 is a partial schematic sectional view of an assembly mounted according to the invention centered on a portion of the interface between the closed tire and the mounting element;
La figure 4 est une vue en coupe d’un capteur de contact capacitif selon l'invention ;  Figure 4 is a sectional view of a capacitive contact sensor according to the invention;
La figure 5 est une vue en coupe d’un capteur de contact piézorésistif selon l'invention ; La figure 6 est un diagramme représentant le signal d’un capteur de contact selon l'invention en fonction de la pression de gonflage d’un bandage pneumatique fermé et suivant sa localisation à l’interface entre le bandage pneumatique fermé et l’élément de montage ou suivant le type d’ajustage du bandage pneumatique fermé sur l’élément de montage. Figure 5 is a sectional view of a piezoresistive contact sensor according to the invention; FIG. 6 is a diagram showing the signal of a contact sensor according to the invention as a function of the inflation pressure of a closed tire and according to its location at the interface between the closed tire and the tire element. mounting or depending on the type of adjustment of the closed tire on the mounting element.
DESCRIPTION DÉTAILLÉE D’AU MOINS UN MODE DE RÉALISATION DE L’INVENTION  DETAILED DESCRIPTION OF AT LEAST ONE MODE OF CARRYING OUT THE INVENTION
[0028] Sur les différentes figures, les éléments identiques ou similaires portent les mêmes références, éventuellement additionné d’un indice. La description de leur structure et de leur fonction n’est donc pas systématiquement reprise.  In the different figures, the identical or similar elements bear the same references, optionally supplemented with an index. The description of their structure and function is therefore not systematically repeated.
[0029] Dans tout ce qui suit, les termes d’orientation s’entendent par rapport au repère orthogonal pris en référence au sens de déplacement normal d’un véhicule automobile 2, représenté sur la figure 2 et dans lequel on distingue :  In all that follows, the orientation terms refer to the orthogonal reference taken with reference to the normal direction of movement of a motor vehicle 2, shown in Figure 2 and in which there are:
Une orientation circonférentielle selon l’axe XX’ horizontal s’étendant de l’arrière vers l’avant ;  A circumferential orientation along the horizontal axis XX 'extending from the rear to the front;
Une orientation axiale selon l’axe YY’ horizontal s’étendant de la droite vers la gauche ; et  An axial orientation along the horizontal axis YY 'extending from right to left; and
Une orientation radiale selon l’axe ZZ’ vertical s’étendant du haut vers le bas.  A radial orientation along the vertical axis ZZ 'extending from top to bottom.
[0030] Le terme « horizontal » est défini par rapport au plan XX’-YY’, le terme « vertical » est défini par rapport au plan XX’-ZZ’ ou YY’-ZZ’. The term "horizontal" is defined with respect to the XX'-YY 'plane, the term "vertical" is defined with respect to the XX'-ZZ' plane or YY'-ZZ '.
[0031] Par « bandage pneumatique », on entend tous les types de bandages élastiques soumis à une pression interne. L'invention s'applique à tout type de bandage pneumatique, notamment ceux destinés à équiper des véhicules à moteur de type tourisme, SUV (« Sport Utility Vehicles »), deux roues (notamment motos), avions, véhicules industriels choisis parmi camionnettes, « Poids-lourds » - c'est-à-dire métro, bus, engins de transport routier (camions, tracteurs, remorques), véhicules hors-la-route tels qu'engins agricoles ou de génie civil -, ou autres véhicules de transport ou de manutention. L’invention s’applique également aux véhicules non motorisés comme notamment une remorque, une semi-remorque ou une caravane.  By "tire" is meant all types of elastic bandages subjected to internal pressure. The invention applies to any type of pneumatic tire, in particular those intended to equip motor vehicles of tourism type, SUV ("Sport Utility Vehicles"), two wheels (in particular motorcycles), planes, industrial vehicles chosen among vans, "Heavy goods vehicles" - that is, metros, buses, road transport vehicles (trucks, tractors, trailers), off-the-road vehicles such as agricultural or civil engineering vehicles - or other vehicles transportation or handling. The invention also applies to non-motorized vehicles such as a trailer, a semi-trailer or a caravan.
[0032] L’invention se rapporte à un ensemble monté 1 de véhicule 2, par exemple automobile, autorisant la surveillance de son bon gonflage. Plus précisément, l’ensemble monté 1 comporte un élément 3 de montage sur lequel est ajusté un bandage pneumatique fermé 5. L’élément 3 de montage, encore appelé roue de montage ou une jante, est un organe destiné à être rapporté sur le système de suspension (non représenté) du véhicule 2 afin de faire, par sa rotation, avancer ce dernier. Par rapport à un élément de montage conventionnel pour bandage pneumatique ouvert, l’élément de montage 3 selon l'invention peut éventuellement comporter une surface périphérique sensiblement cylindrique qui est adaptée à l’ajustement d’un bandage pneumatique fermé 5. The invention relates to a mounted assembly 1 of vehicle 2, for example automobile, allowing the monitoring of its good inflation. More specifically, the mounted assembly 1 comprises a mounting element 3 on which is fitted a closed tire 5. The mounting element 3, also called a mounting wheel or a rim, is a member intended to be attached to the system. suspension (not shown) of the vehicle 2 to make, by its rotation, to advance the latter. Compared with a conventional open tire mounting element, the assembly 3 according to the invention may optionally comprise a substantially cylindrical peripheral surface which is adapted to the adjustment of a closed pneumatic tire 5.
[0033] Comme illustré à la figure 2, le bandage pneumatique fermé 5 selon l'invention comporte préférentiellement :  As illustrated in FIG. 2, the closed tire 5 according to the invention preferably comprises:
une structure 7 de révolution radialement extérieure munie d’une bande 8 de roulement,  a structure 7 of radially outer revolution provided with a strip 8 of rolling,
une structure 9 de révolution radialement intérieure coaxiale à la structure 7 de révolution radialement extérieure, et  a structure 9 of radially inner revolution coaxial with the structure 7 of radially outer revolution, and
deux flancs 10 et 11 , reliant les extrémités axiales des structures 7, 9 de révolution respectivement radialement extérieure et radialement intérieure en délimitant un espace 12 annulaire interne agencé pour être pressurisée par un gaz de gonflage, par exemple au moyen d’une valve de gonflage solidaire du bandage pneumatique fermé 5.  two flanks 10 and 11 connecting the axial ends of the respectively radially outer and radially inner structures 7, 9 delimiting an internal annular space 12 arranged to be pressurized by an inflation gas, for example by means of an inflation valve; secured to the closed tire 5.
[0034] Le bandage pneumatique fermé 5 illustré à la figure 2 est formé en une seule pièce. Toutefois, en variante, il pourrait être formé en plusieurs pièces, comme, par exemple, expliqué dans le document WO 2015/158472 incorporé par référence à la présente description. Bien entendu, chaque flanc 10, 11 et/ou la bande 8 de roulement et/ou la structure 7 de révolution radialement extérieure et/ou la structure 9 de révolution radialement intérieure peuvent comporter une armature de renforcement destinée à garantir les caractéristiques mécaniques du bandage pneumatique fermé 5 lors des déplacements du véhicule 2.  The closed tire 5 illustrated in Figure 2 is formed in one piece. However, alternatively, it could be formed in several pieces, as, for example, explained in WO 2015/158472 incorporated by reference in the present description. Of course, each flank 10, 11 and / or the rolling strip 8 and / or the radially outer revolution structure 7 and / or the radially inner rotation structure 9 may comprise a reinforcing reinforcement intended to guarantee the mechanical characteristics of the tire. closed tire 5 during the movements of the vehicle 2.
[0035] Préférentiellement, le bandage pneumatique fermé 5 est maintenu sur l’élément 3 de montage par les forces résultant de la pressurisation de l’espace 12 annulaire interne du bandage pneumatique fermé 5 et/ou par collage. Plus précisément, la structure 9 de révolution radialement intérieure du bandage pneumatique fermé 5 est ajustée sur la surface périphérique de l’élément 3 de montage.  Preferably, the closed tire 5 is held on the mounting element 3 by the forces resulting from the pressurization of the inner annular space 12 of the closed tire 5 and / or by gluing. More precisely, the radially inner rotation structure 9 of the closed tire 5 is fitted on the peripheral surface of the mounting element 3.
[0036] Préférentiellement selon l'invention, l’ensemble monté 1 comporte un système 13 de surveillance de la pressurisation de l’espace 12 annulaire interne qui n’est pas solidaire du bandage pneumatique fermé 5. En effet, il a été choisi de permettre une implantation ne nécessitant pas de développer de nouveaux bandages pneumatiques fermés 5 dédiés, c'est-à-dire modifiés pour recevoir le système 13 de surveillance. De fait, n’importe quel bandage pneumatique fermé peut être ajusté sur l’élément 3 de montage. Bien entendu, rien n’empêche le système 13 de surveillance de la pressurisation de l’espace 12 annulaire interne de l’ensemble monté 1 d’être alternativement solidaire du bandage pneumatique fermé 5. [0037] La pression P régnant dans l’espace 12 annulaire interne peut ainsi, de manière avantageuse, être déterminée avec précision sans intervenir sur la structure du bandage pneumatique fermé 5 et sans restriction quant aux dimensions de son espace 12 annulaire interne. Preferably according to the invention, the mounted assembly 1 comprises a system 13 for monitoring the pressurization of the internal annular space 12 which is not integral with the closed tire 5. In fact, it has been chosen to allow an implantation that does not require the development of new dedicated closed pneumatic tires, that is to say modified to receive the surveillance system 13. In fact, any closed tire may be fitted to the mounting member 3. Of course, nothing prevents the system 13 for monitoring the pressurization of the inner annular space 12 of the mounted assembly 1 to be alternately secured to the closed tire 5. The pressure P prevailing in the inner annular space 12 can thus advantageously be determined accurately without affecting the structure of the closed tire 5 and without restriction as to the dimensions of its inner annular space 12.
[0038] Le système 13 de surveillance comporte préférentiellement un dispositif 15 de détection de pression de contact monté sur l’élément 3 de montage. Plus précisément, le dispositif 15 de détection est monté à une interface entre le bandage pneumatique fermé 5 et l’élément 3 de montage afin de déterminer la pressurisation de l’espace 12 annulaire interne en fonction de la contrainte C du bandage pneumatique fermé 5 exercée sur l’élément 3 de montage.  The monitoring system 13 preferably comprises a device 15 for detecting contact pressure mounted on the mounting element 3. More specifically, the detection device 15 is mounted at an interface between the closed tire 5 and the mounting element 3 to determine the pressurization of the inner annular space 12 as a function of the stress C of the closed tire 5 exerted on the mounting element 3.
[0039] En effet, avantageusement selon l'invention, il a été trouvé que, dans un tel ensemble 1 monté, la pression de contact mesurée par le dispositif 15 de détection est sensiblement proportionnelle à la pression P de gonflage de l’espace 12 annulaire interne du bandage pneumatique fermé 5. On comprend donc que le système 13 de surveillance selon l'invention est simple et peu coûteux.  Indeed, advantageously according to the invention, it has been found that, in such assembly 1 mounted, the contact pressure measured by the detection device 15 is substantially proportional to the pressure P of inflation of the space 12 Inner annular of the closed pneumatic tire 5. It is thus clear that the monitoring system 13 according to the invention is simple and inexpensive.
[0040] Préférentiellement, le dispositif 15 de détection comporte au moins un capteur 17 de pression de contact, par exemple, du type capacitif ou piézorésistif. Chaque capteur 17 de pression de contact peut être par exemple logé dans un évidement de la surface périphérique de l’élément 3 de montage comme illustré à la figure 3. En outre, le dispositif 15 de détection comporte un élément 16 d’acquisition de chaque capteur 17 de pression de contact destiné à recueillir les signaux de manière continue ou non.  Preferably, the detection device 15 comprises at least one contact pressure sensor 17, for example of the capacitive or piezoresistive type. Each contact pressure sensor 17 may for example be housed in a recess in the peripheral surface of the mounting element 3 as illustrated in FIG. 3. In addition, the detection device 15 comprises an acquisition element 16 of each contact pressure sensor 17 intended to collect the signals in a continuous manner or not.
[0041] L’implantation du dispositif 15 de détection dans l’élément 3 de montage permet de pouvoir mesurer les signaux du dispositif 15 de détection de manière filaire (comme visible à la figure 3) ou non (communication sans fil utilisant une source d’énergie dédiée). La figure 6 est un diagramme représentant le signal S d’un capteur 17 de contact selon l'invention en fonction de la pression P de gonflage d’un bandage pneumatique fermé et suivant sa localisation à l’interface entre le bandage pneumatique fermé et l’élément de montage ou suivant le type d’ajustage du bandage pneumatique fermé 5.  The implantation of the detection device 15 in the mounting element 3 makes it possible to be able to measure the signals of the detection device 15 in a wired manner (as can be seen in FIG. 3) or not (wireless communication using a data source). dedicated energy). FIG. 6 is a diagram representing the signal S of a contact sensor 17 according to the invention as a function of the inflation pressure P of a closed tire and according to its location at the interface between the closed tire and the tire. mounting element or according to the type of adjustment of the closed tire 5.
[0042] La courbe D1 correspond au signal d’un capteur 17 de contact qui placé à une interface (non représentée) au niveau de laquelle le bandage pneumatique fermé 5 est serré sur l’élément 3 de montage et où se trouve une armature de renforcement. On peut voir que le serrage et la grande rigidité longitudinale, au niveau de l’interface où est placée le capteur 17, donnent un signal S qui est élevé même en l’absence de pression P dans l’espace 12 annulaire interne puis augmente au fur et à mesure de l’augmentation de la pression P dans l’espace 12 annulaire interne.  The curve D1 corresponds to the signal of a contact sensor 17 which is placed at an interface (not shown) at which the closed pneumatic tire 5 is clamped on the mounting element 3 and where there is an armature of enhancement. It can be seen that the tightening and the great longitudinal rigidity, at the interface where the sensor 17 is placed, give a signal S which is high even in the absence of pressure P in the internal annular space 12 and then increases at as the pressure P increases in the inner annular space 12.
[0043] La courbe D2 correspond au signal d’un capteur 17 de contact placé à une interface (représentée à la figure 3) au niveau de laquelle le bandage pneumatique fermé 5 est serré sur l’élément 3 de montage mais ne faisant face à aucune armature du bandage pneumatique fermé 5. On peut voir que le serrage et la plus faible rigidité longitudinale, au niveau de l’interface où est placée le capteur 17, donnent un signal S qui est peu élevé en l’absence de pression P dans l’espace 12 annulaire interne puis augmente, selon une pente supérieure à la courbe D1 , au fur et à mesure de l’augmentation de la pression P dans l’espace 12 annulaire interne. The curve D2 corresponds to the signal of a contact sensor 17 placed at an interface (shown in Figure 3) at which the closed tire. 5 is tightened on the mounting element 3 but does not face any armature of the closed tire 5. It can be seen that the tightening and the lowest longitudinal rigidity, at the interface where the sensor 17 is placed, give a signal S which is low in the absence of pressure P in the inner annular space 12 and then increases, along a slope greater than the curve D1, as the pressure P increases in space 12 annular internal.
[0044] La courbe D3 correspond au signal d’un capteur 17 de contact qui placé à une interface (non représentée) au niveau de laquelle le bandage pneumatique fermé 5 est solidarisé sans serrage sur l’élément 3 de montage mais ne faisant face à aucune armature du bandage pneumatique fermé 5. On peut voir que l’absence de serrage et la plus faible rigidité longitudinale, au niveau de l’interface où est placée le capteur 17, donnent un signal S est nul en l’absence de pression P dans l’espace 12 annulaire interne jusqu’à une certaine pression P puis augmente au fur et à mesure de l’augmentation de la pression P dans l’espace 12 annulaire interne. Ce défaut de détection aux plus faibles pressions correspond en fait à un décalage de détection qui ne commence que lorsque le gonflage commence à induire un serrage du bandage pneumatique 5 contre l’élément 3 de montage.  The curve D3 corresponds to the signal of a contact sensor 17 which is placed at an interface (not shown) at which the closed tire 5 is secured without interference to the mounting element 3 but does not face no armature of the closed tire 5. It can be seen that the absence of clamping and the lower longitudinal stiffness, at the interface where the sensor 17 is placed, give a signal S is zero in the absence of pressure P in the internal annular space 12 up to a certain pressure P and then increases as the pressure P increases in the internal annular space 12. This detection defect at the lower pressures corresponds in fact to a detection offset which begins only when the inflation begins to induce a clamping of the tire 5 against the mounting element 3.
[0045] Par conséquent, la localisation et le montage sont des caractéristiques à prendre en compte afin d’optimiser le fonctionnement du système 13 de surveillance. Préférentiellement, une courbe du type D2 est souhaitée car elle permet de détecter toutes les variations de pression P et selon une meilleure précision (pente plus prononcée) par rapport à celle D1 ou D3. On comprend également qu’il est préféré d’étalonner préalablement les signaux des capteurs 17 en fonction de l’architecture élément 3 de montage - bandage pneumatique fermé 5 choisie comme expliqué ci- dessous. Bien entendu, plusieurs capteurs 17 peuvent être répartis sur la surface périphérique de l’élément 3 de montage afin de corréler leur signal dans le but de rendre plus fiable le dispositif 13 de surveillance.  Therefore, the location and mounting are features to be considered in order to optimize the operation of the monitoring system 13. Preferably, a curve of the D2 type is desired because it makes it possible to detect all the pressure variations P and according to a better precision (more pronounced slope) with respect to that D1 or D3. It is also understood that it is preferred to calibrate the signals of the sensors 17 in advance according to the architecture element 3 of assembly - closed pneumatic tire 5 chosen as explained below. Of course, several sensors 17 may be distributed on the peripheral surface of the mounting element 3 in order to correlate their signal in order to make the monitoring device 13 more reliable.
[0046] Le système 13 de surveillance comporte en outre un module 19 de détermination de la pression P destiné à traiter les signaux recueillis par l’élément 16 d’acquisition. Le module 19 de détermination comporte notamment un élément 20 de calcul de la pression P coopérant avec un support 21 comprenant une base de données étalonnées.  The monitoring system 13 further comprises a module 19 for determining the pressure P for processing the signals collected by the acquisition element 16. The determination module 19 comprises in particular an element 20 for calculating the pressure P cooperating with a support 21 comprising a calibrated database.
[0047] Comme suggéré ci-dessus, la base de données étalonnées préalablement établie correspond à la relation entre les signaux mesurés par chaque capteur 17 suivant différentes pressions P de gonflage imposées en fonction de l’architecture élément 3 de montage - bandage pneumatique fermé 5 choisie. L’élément 20 de calcul de la pression P est donc capable, par exemple par itérations successives, de déterminer, à partir de la base de données étalonnées, une valeur de pression P dans l’espace 12 annulaire interne du bandage pneumatique fermé 5. As suggested above, the calibrated database previously established corresponds to the relationship between the signals measured by each sensor 17 according to different inflation pressures P imposed according to the architecture element 3 of assembly - closed pneumatic tire 5 chosen. The element 20 for calculating the pressure P is therefore capable, for example by successive iterations, of determining, from the calibrated database, a pressure value P in the inner annular space 12 of the closed tire 5.
[0048] Pour des considérations statistiques (données massives) et/ou de maintenance (vérification lors de l’entretien) du véhicule 2, le module 19 de détermination de la pression P peut également comporter optionnellement un élément 22 d’enregistrement des pressions P calculées en fonction du temps permettant d’afficher la dérive temporelle de la pression P de chaque bandage pneumatique fermé 5. Bien évidemment, d’autres facteurs et/ou capteurs peuvent être utilisés par le module 19 de détermination de la pression P. À titre d’exemple, le système 13 de surveillance pourrait également comporter un capteur de température dont le signal serait utilisé également par l’élément 20 de calcul de la pression P à partir de la base de données étalonnées incluant également différentes températures.  For statistical considerations (massive data) and / or maintenance (verification during maintenance) of the vehicle 2, the module 19 for determining the pressure P may also optionally include a pressure recording element 22 P calculated as a function of time to display the time drift of the pressure P of each closed tire 5. Of course, other factors and / or sensors may be used by the module 19 for determining the pressure P. for example, the monitoring system 13 could also include a temperature sensor whose signal would also be used by the element 20 for calculating the pressure P from the calibrated database also including different temperatures.
[0049] Les capteurs 17 sont, de manière préférée, aptes à mesurer une pression appliquée de façon continue et constante. En effet, il faut qu’ils soient capables de fournir un signal lors du gonflage et du dégonflage du bandage pneumatique fermé 5.  The sensors 17 are, preferably, able to measure a pressure applied in a continuous and constant manner. Indeed, they must be able to provide a signal during inflation and deflation of the closed tire 5.
[0050] Préférentiellement, les capteurs 17 peuvent être du type capacitif et/ou piézorésistif, c'est-à-dire uniquement capacitif, uniquement piézorésistif ou un mélange des deux.  Preferably, the sensors 17 may be of the capacitive and / or piezoresistive type, that is to say only capacitive, only piezoresistive or a mixture of the two.
[0051] La figure 4 est une vue en coupe d’une première variante de capteur 17 de contact du type capacitif selon l'invention. Dans cet exemple, le capteur 17 est intégré dans un logement adapté de l’élément 3 de montage. Il comporte une enceinte 23 diélectrique formée par exemple d’un matériau électriquement isolant massif destinée à isoler électriquement le capteur 17 de l’élément 3 de montage. L’enceinte 23 est munie d’un évidement 24 dans laquelle est monté un élément capacitif 25.  FIG. 4 is a sectional view of a first variant of a capacitive type contact sensor 17 according to the invention. In this example, the sensor 17 is integrated in a housing adapted to the mounting element 3. It comprises a dielectric enclosure 23 formed for example of a solid electrically insulating material for electrically isolating the sensor 17 from the mounting element 3. The chamber 23 is provided with a recess 24 in which a capacitive element 25 is mounted.
[0052] Dans l’exemple de la figure 4, l’élément capacitif 25 est formé par un empilement successif d’une couche 26 électriquement conductrice, d’une couche 27 électriquement isolante, d’un interstice 28 (par exemple un espace rempli d’air) puis à nouveau d’une couche 29 électriquement conductrice. Préférentiellement, la couche 27 électriquement isolante comporte une permittivité diélectrique relative er (« epsilon ») élevée comme par exemple supérieure à 1 ,5. In the example of Figure 4, the capacitive element 25 is formed by a successive stack of an electrically conductive layer 26, an electrically insulating layer 27, a gap 28 (for example a space filled with of air) and again of an electrically conductive layer 29. Preferably, the electrically insulating layer 27 has a relative dielectric permittivity e r ("epsilon") high, for example greater than 1, 5.
[0053] Lorsque le bandage pneumatique fermé 5 est gonflé, il va exercer une contrainte C de plus en plus importante sur la couche 29 électriquement conductrice du capteur 17 en la déformant. Cette déformation rapproche les deux couches 26, 29 électriquement conductrices de l’élément capacitif 25 entraînant une variation du signal S du capteur 17.  When the closed tire 5 is inflated, it will exert a constraint C increasingly important on the electrically conductive layer 29 of the sensor 17 by deforming it. This deformation brings the two electrically conductive layers 26, 29 closer to the capacitive element 25 causing a variation of the signal S of the sensor 17.
[0054] La zone de déformation centrée sur la surface en contact avec le bandage pneumatique fermé 5 comble une partie de l’interstice 28 jusqu’à faire toucher une partie de la couche 29 électriquement conductrice avec la couche 27 électriquement isolante. Préférentiellement, on choisira une géométrie de surface de contact et d’empilement de l’élément capacitif 25 de façon à éviter une saturation du capteur 17 à une pression P inférieure à la pression de gonflage préconisé pour le bandage pneumatique fermé 5. The deformation zone centered on the surface in contact with the closed tire 5 fills a portion of the gap 28 until touching a portion of the electrically conductive layer 29 with the layer 27 electrically insulating. Preferably, a contact and stack surface geometry of the capacitive element 25 will be chosen so as to avoid saturation of the sensor 17 at a pressure P lower than the inflation pressure recommended for the closed tire 5.
[0055] À titre d’exemple, dans le cas d’un bandage pneumatique fermé 5 à pression P de gonflage élevée, tel un bandage pneumatique fermé 5 du type poids lourd, on aura par exemple une dimension transversale du capteur 17 plus élevée, que dans le cas d’un bandage pneumatique du type tourisme. For example, in the case of a closed pneumatic tire 5 with high inflation pressure P such as a closed pneumatic tire 5 of the heavy weight type, there will be for example a transverse dimension of the sensor 17 which is higher, only in the case of a pneumatic tire of the tourism type.
[0056] Dans la pratique, la capacité obtenue sera proportionnelle à la surface de contact de la couche 29 électriquement conductrice avec la couche 27 électriquement isolante. Cette capacité peut être par exemple, mesurée simplement en la positionnant à l’intérieur d’un simple circuit résonnant LC bien connu de l’homme du métier compris dans l’élément 16 d’acquisition. En effet, il est connu que ce type de circuit résonne à une fréquence égale à 1/(2*PI*racine(L*C)). Ainsi, si la capacité varie, la fréquence de résonnance variera d’autant. Il est donc possible d’évaluer la valeur de l’élément 25 capacitif en mesurant simplement la fréquence obtenue puis de réaliser la mesure de pression à l’aide du module 19 de détermination de la pression P. Préférentiellement, on utilisera un module 19 muni d’un microcontrôleur apte à déterminer à intervalle régulier la pression P plutôt qu’en continu afin d’économiser avantageusement l’énergie nécessaire. In practice, the capacity obtained will be proportional to the contact area of the electrically conductive layer 29 with the electrically insulating layer 27. This capacitance can be, for example, measured simply by positioning it inside a simple LC resonant circuit well known to those skilled in the art included in the acquisition element 16. Indeed, it is known that this type of circuit resonates at a frequency equal to 1 / (2 * PI * root (L * C)). Thus, if the capacity varies, the resonance frequency will vary accordingly. It is therefore possible to evaluate the value of the capacitive element by simply measuring the frequency obtained and then to carry out the pressure measurement using the pressure-determining module 19. Preferably, a module 19 provided with a microcontroller capable of determining at regular intervals the pressure P rather than continuously to advantageously save the necessary energy.
[0057] La figure 5 est une vue en coupe d’une deuxième variante de capteur 17 de contact du type piézorésistif selon l'invention. Dans cet exemple, le capteur 17 est intégré dans un logement adapté de l’élément 3 de montage. Il comporte un élément résistif 31 formé par un empilement successif d’une couche 32 électriquement conductrice, d’une couche 33 de matériau piézorésistif puis à nouveau d’une couche 34 électriquement conductrice. À titre informatif, un matériau piézorésistif du type VELOSTAT® ou LINQSTAT® de la société Adafruit® peut être utilisé.  FIG. 5 is a sectional view of a second variant of a piezoresistive type contact sensor 17 according to the invention. In this example, the sensor 17 is integrated in a housing adapted to the mounting element 3. It comprises a resistive element 31 formed by a successive stack of an electrically conductive layer 32, a layer 33 of piezoresistive material and again an electrically conductive layer 34. For information, a piezoresistive material such as VELOSTAT® or LINQSTAT® from Adafruit® can be used.
[0058] Lorsque le bandage pneumatique fermé 5 est gonflé, il va exercer une contrainte C de plus en plus importante sur la couche 34 électriquement conductrice du capteur 17 en la déformant. Cette déformation écrase la couche 33 de matériau piézorésistif entre les deux couches 32, 34 électriquement conductrices de l’élément résistif 31 entraînant une variation du signal S du capteur 17.  When the closed tire 5 is inflated, it will exert a constraint C increasingly important on the electrically conductive layer 34 of the sensor 17 by deforming it. This deformation crushes the layer 33 of piezoresistive material between the two electrically conductive layers 32, 34 of the resistive element 31 causing a variation of the signal S of the sensor 17.
[0059] Préférentiellement, on choisira une géométrie de surface de contact et d’empilement de l’élément résistif 31 de façon à éviter une saturation du capteur 17 à une pression P inférieure à la pression de gonflage préconisé pour le bandage pneumatique fermé 5.  Preferably, one will choose a contact surface geometry and stack of the resistive element 31 so as to avoid saturation of the sensor 17 at a pressure P less than the recommended inflation pressure for the closed tire 5.
[0060] Dans la pratique, la résistance obtenue sera proportionnelle à la pression hydrostatique exercée sur la couche 33 de matériau piézorésistif. Cette résistance peut être par exemple, mesurée simplement en la positionnant à l’intérieur d’un pont de Wheatstone bien connu de l’homme du métier compris dans l’élément 16 d’acquisition. Préférentiellement, on utilisera un module 19 muni d’un microcontrôleur apte à déterminer à intervalle régulier la pression P plutôt qu’en continu afin d’économiser avantageusement l’énergie nécessaire. In practice, the resistance obtained will be proportional to the hydrostatic pressure exerted on the layer 33 of piezoresistive material. This resistance can for example, measured simply by positioning it inside a Wheatstone bridge well known to those skilled in the art included in the acquisition element 16. Preferably, a module 19 equipped with a microcontroller capable of determining the pressure P at regular intervals rather than continuously to advantageously save the necessary energy.
[0061] L'invention n'est pas limitée aux modes de réalisation et variantes présentés et d'autres modes de réalisation et variantes apparaîtront clairement à l'homme du métier. Ainsi, L’invention ne saurait se limiter à des capteurs 17 présentés ci-dessus. Il pourrait être ainsi envisagé d’autres types de capteurs 17 de pression de contact.  The invention is not limited to the embodiments and variants presented and other embodiments and variants will become apparent to those skilled in the art. Thus, the invention can not be limited to sensors 17 presented above. It could thus be envisaged other types of contact pressure sensors 17.
[0062] Il est également possible que l’intervalle de calcul du module 19 de détermination ne soit pas régulier mais modifiable en fonction des circonstances. À titre d’exemple, dans le cas où une variation de pression P serait détectée, il pourrait être prévu d’augmenter la fréquence de mesure afin de remonter des alertes fiables et plus fréquentes aptes notamment à avertir au plus tôt du dégonflage rapide du bandage pneumatique fermé 5. It is also possible that the calculation interval of the determination module 19 is not regular but modifiable depending on the circumstances. For example, in the case where a pressure variation P would be detected, it could be planned to increase the measurement frequency in order to raise reliable and more frequent alerts able in particular to warn as soon as possible of the rapid deflation of the bandage. Closed tire 5.

Claims

REVENDICATIONS
1. Élément (3) de montage destiné à recevoir un bandage pneumatique fermé (5) et comportant un dispositif (15) de détection de pression de contact agencé pour détecter de la contrainte (C) exercée par le bandage pneumatique fermé (5) sur l’élément (3) de montage, caractérisé en ce que le dispositif (15) de détection comporte au moins un capteur (17) de pression de contact du type capacitif apte à mesurer une pression appliquée de façon continue et constante. A mounting member (3) for receiving a closed tire (5) and having a contact pressure detecting device (15) arranged to detect stress (C) exerted by the closed tire (5) on the mounting element (3), characterized in that the detection device (15) comprises at least one capacitive-type contact pressure sensor (17) capable of measuring a pressure applied in a continuous and constant manner.
2. Élément (3) de montage selon la revendication précédente, dans lequel le capteur (17) de pression de contact comporte une enceinte (23) diélectrique destinée à isoler électriquement le capteur (17) de l’élément (3) de montage et dans laquelle est monté un élément (25) capacitif.  2. Element (3) mounting according to the preceding claim, wherein the sensor (17) of contact pressure comprises a housing (23) dielectric for electrically isolating the sensor (17) of the element (3) mounting and in which is mounted a capacitive element (25).
3. Élément (3) de montage selon la revendication précédente, dans lequel l’élément (25) capacitif est formé par un empilement successif d’une première couche (26) électriquement conductrice, d’une couche (27) électriquement isolante, d’un interstice (28) puis d’une deuxième couche (29) électriquement conductrice afin que la contrainte (C) exercée sur la deuxième couche (29) électriquement conductrice entraîne la variation du signal du capteur (17) de pression de contact. 3. Element (3) assembly according to the preceding claim, wherein the capacitive element (25) is formed by a successive stack of a first layer (26) electrically conductive, a layer (27) electrically insulating, d a gap (28) then a second electrically conductive layer (29) so that the stress (C) exerted on the second electrically conductive layer (29) causes the signal of the contact pressure sensor (17) to vary.
4. Élément (3) de montage destiné à recevoir un bandage pneumatique fermé (5) et comportant un dispositif (15) de détection de pression de contact agencé pour détecter de la contrainte (C) exercée par le bandage pneumatique fermé (5) sur l’élément (3) de montage, caractérisé en ce que le dispositif (15) de détection comporte au moins un capteur (17) de pression de contact du type piézorésistif apte à mesurer une pression appliquée de façon continue et constante. 4. A mounting element (3) for receiving a closed tire (5) and having a contact pressure sensing device (15) arranged to detect the stress (C) exerted by the closed tire (5) on the mounting element (3), characterized in that the detection device (15) comprises at least one piezoresistive type contact pressure sensor (17) able to measure a pressure applied in a continuous and constant manner.
5. Élément (3) de montage selon la revendication précédente, dans lequel le capteur (17) de pression de contact comporte un élément (31 ) résistif formé par un empilement successif d’une première couche (32) électriquement conductrice, d’une couche (33) de matériau piézorésistif puis d’une deuxième couche (34) électriquement conductrice afin que la contrainte (C) exercée sur la couche (33) de matériau piézorésistif entraîne la variation du signal du capteur (17) de pression de contact.  5. element (3) mounting assembly according to the preceding claim, wherein the sensor (17) of contact pressure comprises a member (31) resistive formed by a successive stack of a first layer (32) electrically conductive, a layer (33) of piezoresistive material and then a second electrically conductive layer (34) so that the stress (C) exerted on the layer (33) of piezoresistive material causes the variation of the signal of the contact pressure sensor (17).
6. Élément (3) de montage selon l’une des revendications précédentes, comportant une surface périphérique sensiblement cylindrique sur laquelle est montée le dispositif (15) de détection de pression de contact.  6. Element (3) mounting according to one of the preceding claims, comprising a substantially cylindrical peripheral surface on which is mounted the device (15) for detecting contact pressure.
7. Élément (3) de montage selon la revendication précédente, dans lequel chaque capteur (17) de pression de contact étant logé dans un évidement de la périphérie de l’élément (3) de montage. 7. element (3) mounting according to the preceding claim, wherein each sensor (17) of contact pressure being housed in a recess of the periphery of the element (3) mounting.
8. Ensemble monté (1 ) de véhicule comportant un élément (3) de montage sur lequel est ajusté un bandage pneumatique fermé (5), ledit bandage pneumatique fermé comportant : A vehicle mounted assembly (1) having a mounting member (3) on which a closed tire (5) is fitted, said closed tire comprising:
une structure (7) de révolution radialement extérieure munie d’une bande (8) de roulement,  a structure (7) of radially outer revolution provided with a strip (8) rolling,
une structure (9) de révolution radialement intérieure coaxiale à la structure (7) de révolution radialement extérieure, et  a radially inner revolution structure (9) coaxial with the radially outer revolution structure (7), and
deux flancs (10, 11 ), reliant les extrémités axiales des structures (7, 9) de révolution respectivement radialement extérieure et radialement intérieure en délimitant un espace (12) annulaire interne agencé pour être pressurisée par un gaz de gonflage,  two flanks (10, 11), connecting the axial ends of the respectively radially outer and radially inner revolution structures (7, 9) delimiting an internal annular space (12) arranged to be pressurized by an inflation gas,
caractérisé en ce que l’élément (3) de montage est selon l'une quelconque des revendications précédentes, et en ce que l’ensemble monté (1 ) comporte un système (13) de surveillance de la pressurisation (P) de l’espace (12) annulaire interne du bandage pneumatique fermé (5) comportant le dispositif (13) de détection de pression de contact afin de déterminer la pressurisation (P) de l’espace (12) annulaire interne en fonction de la contrainte (C) exercée par le bandage pneumatique fermé (5) sur l’élément (3) de montage.  characterized in that the mounting element (3) is according to any one of the preceding claims, and in that the mounted assembly (1) comprises a system (13) for monitoring the pressurization (P) of the internal annular space (12) of the closed tire (5) having the contact pressure detecting device (13) for determining the pressurization (P) of the inner annulus (12) as a function of the stress (C) exerted by the closed tire (5) on the mounting element (3).
9. Ensemble monté (1 ) selon la revendication précédente, dans lequel le bandage pneumatique fermé (5) est maintenu sur l’élément (3) de montage par les forces résultant de la pressurisation (P) de l’espace (12) annulaire interne du bandage pneumatique fermé (5) et/ou par collage.  9. mounted assembly (1) according to the preceding claim, wherein the closed tire (5) is held on the element (3) mounting by the forces resulting from the pressurization (P) of the space (12) annular inside the closed tire (5) and / or by gluing.
10. Ensemble monté (1 ) selon la revendication 8 ou 9, dans lequel le bandage pneumatique fermé (5) est formé en une seule pièce.  10. Mounted assembly (1) according to claim 8 or 9, wherein the closed tire (5) is formed in one piece.
1 1 . Ensemble monté (1 ) selon la revendication précédente, dans lequel chaque flanc (10, 11 ) et la bande (8) de roulement comportent en outre une armature de renforcement.  1 1. Mounted assembly (1) according to the preceding claim, wherein each flank (10, 11) and the strip (8) of rolling further comprise a reinforcing armature.
12. Ensemble monté (1 ) selon l'une quelconque des revendications 8 à 11 , dans lequel le dispositif (15) de détection de pression de contact est en contact avec la face externe de la structure (9) de révolution radialement intérieure du bandage pneumatique fermé (5).  12. Mounted assembly (1) according to any one of claims 8 to 11, wherein the device (15) for detecting contact pressure is in contact with the outer face of the structure (9) of radially inner revolution of the tire. closed tire (5).
PCT/EP2018/084283 2017-12-15 2018-12-11 Mounting element for receiving a closed pneumatic tire, and mounted assembly comprising such an element with an inflation pressure monitoring system WO2019115497A1 (en)

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FR1762201 2017-12-15
FR17/62201 2017-12-15

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618347A1 (en) * 1986-05-30 1987-12-03 Continental Gummi Werke Ag Tube tyre, in particular for bicycles
EP0894614A1 (en) 1997-07-31 1999-02-03 PIRELLI COORDINAMENTO PNEUMATICI S.p.A. A method for making a tyre for vehicle wheels
EP1737682A1 (en) * 2004-04-09 2007-01-03 Societe de Technologie Michelin Tyre comprising a deformation sensor and tyre deflection evaluation method
EP2085253A1 (en) * 2006-11-14 2009-08-05 Kabushiki Kaisha Bridgestone Tire with sensor and method for measuring tire distortion level
EP2829857A1 (en) * 2013-07-24 2015-01-28 Ecole Polytechnique Piezoresistive material exhibiting an optimal gauge factor
WO2015158472A1 (en) 2014-04-16 2015-10-22 Compagnie Generale Des Etablissements Michelin Adapter for rolling assembly and rolling assembly comprising same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3618347A1 (en) * 1986-05-30 1987-12-03 Continental Gummi Werke Ag Tube tyre, in particular for bicycles
EP0894614A1 (en) 1997-07-31 1999-02-03 PIRELLI COORDINAMENTO PNEUMATICI S.p.A. A method for making a tyre for vehicle wheels
EP1737682A1 (en) * 2004-04-09 2007-01-03 Societe de Technologie Michelin Tyre comprising a deformation sensor and tyre deflection evaluation method
EP2085253A1 (en) * 2006-11-14 2009-08-05 Kabushiki Kaisha Bridgestone Tire with sensor and method for measuring tire distortion level
EP2829857A1 (en) * 2013-07-24 2015-01-28 Ecole Polytechnique Piezoresistive material exhibiting an optimal gauge factor
WO2015158472A1 (en) 2014-04-16 2015-10-22 Compagnie Generale Des Etablissements Michelin Adapter for rolling assembly and rolling assembly comprising same

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