WO1996023145A1 - Drum brake lining wear and temperature indicating system - Google Patents
Drum brake lining wear and temperature indicating system Download PDFInfo
- Publication number
- WO1996023145A1 WO1996023145A1 PCT/FR1995/000073 FR9500073W WO9623145A1 WO 1996023145 A1 WO1996023145 A1 WO 1996023145A1 FR 9500073 W FR9500073 W FR 9500073W WO 9623145 A1 WO9623145 A1 WO 9623145A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wear
- rivet
- detection
- temperature
- trailers
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
- F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
- F16D66/024—Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D2066/001—Temperature
Definitions
- the present invention is a simple and reliable system intended on the one hand to inform that the still acceptable limit of wear of the drum brake linings for any type of vehicle has been reached, and on the other hand to indicate in constant time the temperature level of these same linings.
- This system is more particularly intended for industrial vehicles, and can therefore of course be used on any motor vehicle, tractor, heavy goods vehicle, vans, bus and passenger car, equipped with drum brakes.
- the existing means intended to warn the driver of the vehicle of the rise in temperature of the brake linings are natural, that is to say; that the first warning is given by the odor, and that the second warning is given by the release of smoke at the level of the brakes, in the case where these are with drums.
- These existing natural means can no longer be taken fully into account due to the increasingly sophisticated insulation of driving cabs (air conditioning), atmospheric conditions, rain, wind, fog, and driving at night.
- natural means upon detection, the braking performance is already reduced, for example, after the odor is released and before the smoke appears, the brake is approximately 300 ° C, at this temperature the braking efficiency has already been reduced by 25%.
- the present system in its wear detection function of the drum brake linings, informs the user when the brake linings have reached a thickness still acceptable for a short journey, thus indicating to him that the overhaul, and possibly the replacement of the fittings, are to be provided as soon as possible, before the drums come into contact with the standard rivets intended for fixing the fittings.
- the information is read via a light source such as an LED located on a display unit.
- SUBSTITUTE SHEET (RULE 26) In the case of use on trailers, this case is waterproof, and fixed on the side thereof, the LED is on when there is contact between a detection rivet added in place of a standard rivet, and the brake drum.
- This information is active even when the towed vehicle is off the tractor and parked, because the power source of the display unit is obtained by means of batteries recharged automatically when the trailer is attached to the tractor.
- the display unit will preferably be equipped with three light sources, such as LEDs allowing the wear of the linings to be checked for trailers fitted with one to three axles. mounting this system does not require modification of the existing parts to the standard brakes and it is also sufficient to use only one detection rivet per wheel.
- the display unit can be brought back to the dashboard of the vehicle, in this version the power supply will be done by connecting the unit to the + of the vehicle, thereby eliminating the use of batteries.
- the permanent detection of the temperature level of the brakes either using light sources, or using graduated dials with needle, indicating the temperature and by the same the loss. braking efficiency per wheel.
- the temperature is detected using a thermal probe fixed to the lining support by means of the wear detection rivet thereof and by an electric wire bringing 1 • information to the display unit.
- FIGURE 1 The mounting of the detection rivet on the brake linings.
- FIGURE 2 The electrical connection diagram of the system on trailers.
- FIGURE 3 The electrical connection diagram of the display unit in the driver's cabin.
- the device consists (fig 1) of a rivet (1), insulated from the lining support (6), using a sheath (2), and a washer insulating (3). After riveting the packing (7), the electrical contact is made using a copper washer (4), on which is welded an electric wire (5) intended to convey the wear information to the case. display (9), via connector (8) (fig 2).
- the thermal probe (17), in contact with the support (6) and located under the washer (3), is connected to the display unit (19) (fig 3) via an electric wire (18) and a connector (20) (fig 3).
- FIG. 2 represents the electrical connection diagram in the case of a towed vehicle with three axles (14).
- the housing (9) is equipped with three red LEDs (10) which, when lit, inform the user of the advanced wear of the brake linings (7).
- the box (9) is connected to the constant + using an electric wire (12), and to the ground (13), thanks to the proper fixing of the box (9) to the chassis of the trailer.
- a charge control system consists of a push button (15), which being activated allows to light an LED type indicator lamp (11), green in color.
- the (fig 3), represents the diagram of electrical connection in the case of combined use of the wear and temperature detection systems of the linings.
- the housing (19) is equipped with a maximum of 12 LEDs (21), red in color intended for the wear information of the linings (7).
- the box (19) is connected to the vehicle + using an electric wire (23), protected by a fuse (24), and to the vehicle ground either using an electric wire ( 25), or directly at the attachment of the housing (19), in certain cases of use.
- a control means consists of a push button (26) which, when actuated, makes it possible to light all the LEDs (21) (22) of the housing (19). In certain cases of use, this control can be done when the vehicle is brought into contact via the starting system (ignition key).
- the invention relates to a system intended on the one hand for informing that the acceptable wear limit of the drum brake linings has been reached and on the other hand indicates in constant time the temperature level of these same linings, and this for any type of vehicle, for example trucks. etc., characterized in that it consists, on the one hand, of a rivet (1), electrically insulated (2) (3) installed in the standard housing (16) provided for riveting the drum brake linings (7), and in that, on the other hand, this rivet is connected by a copper washer (4) and an electric wire (5) to a receiving box (9) ( 19) provided with display means (10) (21).
- This system can thus be provided with a thermal probe (17) connected by an electric wire (18) to a reception box (19) provided with display means (22).
- the receiving box (9) comprises electrical supply means of the battery-cell type so as to be autonomous, and therefore be used on towed trailers even if these are detached from the tractor .
- the housing (9) comprises a push button (15) for controlling the charge by a lamp (11).
- the isolated rivet (1) (2) (3) is replaced by a standard rivet, housed in the first third of the compressed gasket (7), the head of which is at least 1 millimeter higher than the other rivets, this in order to ensure, as a preliminary, contact with the drum at the desired level of wear on the lining, the latter being made in the same way, of electrolytic copper.
- the detection rivet (1) is electrically insulated from the lining support (6) by a sheath (2) and a washer (3) disposed between the latter and the copper washer (4) under the part folded down as a rivet (1), this insulation accepting temperature rises due to braking.
- the display unit (9) intended to be mounted on trailers and fitted with battery cells; and is provided with an electric wire connected to the positive terminal thereof, intended to be connected to the constant + of the vehicle so as to replenish the rechargeable battery cells with current when the trailer is attached to the towing vehicle.
- the thermal probe (17) is in contact with the packing support (6) and immobilized after riveting under the insulating washer (3).
- the display unit (19) intended to be fixed to the vehicle dashboard is provided with indicator light (21) (22) indicating the state of wear of the linings (7) as well as the temperature level of the brakes, and this for each vehicle wheel.
- the box (19) combining detection, wear (21) and temperature (22) allows the driver to view the state of the brake system by wheel in constant time, and thus detect anomalies allowing him to modify his conduct if necessary.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
A system for indicating both that the acceptable wear limit of drum brake linings has been reached in any kind of vehicle, and what the lining temperature level is. The system is particularly useful in commercial vehicles such as lorries, buses, vans or trailers, and even in private cars. The system consists of a rivet (1) surrounded by electrical insulation (2, 3) and positioned in a standard bore (16) provided for riveting drum brake linings (7). The rivet is connected via a copper washer (4) and electric wires (18) to a receiving housing (19, 9) provided with display means (10, 21, 22). The system further consists of a temperature sensor (17) connected via electric wires (18) to said receiving housing (19, 9).
Description
SYSTEME D'INDICATION D'USURE ET DE TEMPERATURE DES GARNITURES DE FREINS A TAMBOUR.SYSTEM FOR INDICATING WEAR AND TEMPERATURE OF DRUM BRAKE LININGS.
La présente invention est un système fiable et simple destiné d'une part à informer qu'est atteinte la limite encore acceptable d'usure des garnitures de frein à tambour pour tout type de véhicule, et d'autre part à indiqué en temps constant le niveau de température de ces même garnitures.The present invention is a simple and reliable system intended on the one hand to inform that the still acceptable limit of wear of the drum brake linings for any type of vehicle has been reached, and on the other hand to indicate in constant time the temperature level of these same linings.
Ce système est plus particulièrement destiné aux véhicules industriels, et peut donc bien entendu être utilisé sur tout véhicule moteur, tracteur, poids lourds, camionnettes, bus et voitures particulière, équipés de freins à tambour.This system is more particularly intended for industrial vehicles, and can therefore of course be used on any motor vehicle, tractor, heavy goods vehicle, vans, bus and passenger car, equipped with drum brakes.
Les systèmes existants basés sur l'installation d'un détecteur d'usure sur les garnitures de frein à tambour principalement destinés aux poids lourds nécessitent un montage coûteux, et ne peuvent être appliqués aux véhicules remorqués car ils nécessitent une alimentation électrique constante.Existing systems based on the installation of a wear detector on the drum brake linings mainly intended for heavy goods vehicles require an expensive assembly, and cannot be applied to towed vehicles because they require a constant electrical supply.
Concernant la température, les moyens existants destinés à avertir le conducteur du véhicule de la montée en température des garnitures de freins sont naturels, c'est à dire; que le premier avertissement est donné par l'odeur, et que le deuxième avertissement est donné par le dégagement de fumée au niveau des freins, dans la cas ou ceux-ci sont à tambour. Ces moyens naturels existants ne peuvent plus être pris totalement en compte du fait de l'isolation de plus en plus perfectionnée des cabines de conduite (air conditionné) , des conditions atmosphériques, pluie, vent, brouillard, et conduite de nuit De plus avec ces moyens naturels, lors de la détection, le rendement de freinage est déjà amoindri, pour l'exemple, après dégagement de l'odeur et avnt que n'apparaisse la fumée, le frein est environ à 300° C, à cette température l'efficacité de freinage à déjà été réduite de 25%. Le présent système dans sa fonction de détection d'usure des garnitures de freins à tambour, informe l'utilisateur lorsque les garnitures de frein ont atteint une épaisseur encore acceptable pour un court trajet, lui indiquant ainsi que la révision, et éventuellement le remplacement des garnitures, sont à prévoir dans les plus brefs délais, avant que les tambours ne viennent en contact avec les rivets standarts destinés à la fixation des garnitures. La lecture de l'information se fait par l'intermédiaire d'une source lumineuse telle que LED située sur un boitier de visualisation.Concerning the temperature, the existing means intended to warn the driver of the vehicle of the rise in temperature of the brake linings are natural, that is to say; that the first warning is given by the odor, and that the second warning is given by the release of smoke at the level of the brakes, in the case where these are with drums. These existing natural means can no longer be taken fully into account due to the increasingly sophisticated insulation of driving cabs (air conditioning), atmospheric conditions, rain, wind, fog, and driving at night. natural means, upon detection, the braking performance is already reduced, for example, after the odor is released and before the smoke appears, the brake is approximately 300 ° C, at this temperature the braking efficiency has already been reduced by 25%. The present system in its wear detection function of the drum brake linings, informs the user when the brake linings have reached a thickness still acceptable for a short journey, thus indicating to him that the overhaul, and possibly the replacement of the fittings, are to be provided as soon as possible, before the drums come into contact with the standard rivets intended for fixing the fittings. The information is read via a light source such as an LED located on a display unit.
FEUILLE DE REMPLACEMENT (RÈGLE 26)
Dans le cas d'utilisation sur remorques, ce boitier est étanche, et fixé sur le coté de celle-ci, le LED est allumé lorsqu'il y a contact entre un rivet de détection rapporté à la place d'un rivet standart, et le tambour de frein.SUBSTITUTE SHEET (RULE 26) In the case of use on trailers, this case is waterproof, and fixed on the side thereof, the LED is on when there is contact between a detection rivet added in place of a standard rivet, and the brake drum.
Cette information est active même lorsque le véhicule remorqué est décroché du tracteur et parqué, car la source d'énergie du boitier de visualisation est obtenue au moyen de piles-batteries rechargées automatiquement lorsque la remorque est rattachée au tracteur.This information is active even when the towed vehicle is off the tractor and parked, because the power source of the display unit is obtained by means of batteries recharged automatically when the trailer is attached to the tractor.
Le boitier de visualisation sera équipé de préférence de trois souces lumineuses, telles que LED permettant de contrôler l'usure des garnitures pour les remorques équipées de un à trois essieux. le montage de ce système ne nécessite pas de modification des pièces existantes aux freins standarts et il est aussi suffisant de n'utiliser qu'un seul rivet de détection par roue.The display unit will preferably be equipped with three light sources, such as LEDs allowing the wear of the linings to be checked for trailers fitted with one to three axles. mounting this system does not require modification of the existing parts to the standard brakes and it is also sufficient to use only one detection rivet per wheel.
Dans le cas d'utilisation sur véhicule tracteur par exemple, camions, bus, camionnettes, voir voitures particulières, le boitier de visualisation peut-être ramené au tableau de bord du véhicule, dans cette version l'alimentation se fera par le branchement du boitier au + du véhicule, supprimant par la même l'utilisation des piles-batteries. II est prévu d'utiliser dans cette dernière version, la détection en permanence du niveau de température des freins soit à l'aide de sources lumineuses, soit à l'aide de cadrans gradués à aiguille, indiquant la température et par la même la perte d'efficacité de freinage par roue. La détection de température se fait à l'aide d'une sonde thermique fixée au support de garniture par l'intermédiaire du rivet de détection d'usure de celle-ci et par un fil électrique ramenant 1•information au boitier de visualisation. A titre d'illustration, des dessins sont joints qui représentent :In the case of use on a tractor vehicle for example, trucks, buses, vans, see passenger cars, the display unit can be brought back to the dashboard of the vehicle, in this version the power supply will be done by connecting the unit to the + of the vehicle, thereby eliminating the use of batteries. It is planned to use in this last version, the permanent detection of the temperature level of the brakes either using light sources, or using graduated dials with needle, indicating the temperature and by the same the loss. braking efficiency per wheel. The temperature is detected using a thermal probe fixed to the lining support by means of the wear detection rivet thereof and by an electric wire bringing 1 • information to the display unit. By way of illustration, drawings are attached which represent:
FIGURE 1 : Le montage du rivet de détection sur les garnitures de freins.FIGURE 1: The mounting of the detection rivet on the brake linings.
FIGURE 2 : Le schéma de raccordement électrique du système sur remorques.FIGURE 2: The electrical connection diagram of the system on trailers.
FIGURE 3 : Le schéma de raccordement électrique du boitier de visualisation en cabine de conduite.
En référence à ces dessins, le dispositif est constitué (fig 1) d'un rivet (1), isolé par rapport au support de garniture (6), à l'aide d'une gaine (2), et d'une rondelle isolante (3) . Après rivetage de la garniture (7) , le contact électrique s'opère à l'aide d'une rondelle de cuivre (4), sur laquelle est soudé un fil électrique (5) destiné à acheminer l'information d'usure au boitier de visualisation (9), par l'intermédiaire de connecteur (8) (fig 2).FIGURE 3: The electrical connection diagram of the display unit in the driver's cabin. With reference to these drawings, the device consists (fig 1) of a rivet (1), insulated from the lining support (6), using a sheath (2), and a washer insulating (3). After riveting the packing (7), the electrical contact is made using a copper washer (4), on which is welded an electric wire (5) intended to convey the wear information to the case. display (9), via connector (8) (fig 2).
La sonde thermique (17) , en contact avec le support (6) et située sous la rondelle (3) , est relié au boitier de visualisation (19) (fig 3) par l'intermédiaire d'un fil électrique (18) et d'un connecteur (20) (fig 3).The thermal probe (17), in contact with the support (6) and located under the washer (3), is connected to the display unit (19) (fig 3) via an electric wire (18) and a connector (20) (fig 3).
La figure 2 représente le schéma de raccordement électrique dans le cas d'un véhicule remorqué à trois essieux (14). Le boitier (9) , est équipé de trois LED (10) , de couleur rouge, lesquelles en s'allumant informe l'utilisateur de l'usure avancée des garnitures de frein (7).FIG. 2 represents the electrical connection diagram in the case of a towed vehicle with three axles (14). The housing (9) is equipped with three red LEDs (10) which, when lit, inform the user of the advanced wear of the brake linings (7).
Le boitier (9), est raccordé au + constant à l'aide d'un fil électrique (12) , et à la masse (13) , grâce à la fixation propre du boitier (9) sur le châssis de la remorque. Afin de vérifier le bon état, ainsi que la charge des piles-batteries situées à l'intérieur du boitier (9), un système de contrôle de charge est constitué d'un bouton poussoir (15) , lequel étant actionné permet d'allumer une lampe témoin du type LED (11) , de couleur verte.The box (9) is connected to the constant + using an electric wire (12), and to the ground (13), thanks to the proper fixing of the box (9) to the chassis of the trailer. In order to check the good state, as well as the charge of the batteries located inside the case (9), a charge control system consists of a push button (15), which being activated allows to light an LED type indicator lamp (11), green in color.
La (fig 3) , représente le schéma de raccordement électrique dans le cas d'utilisation combinée des systèmes de détection d'usure et de température des garnitures. le boitier (19) , est équipé d'un maximum de 12 LED (21) , de couleur rouge destiné à l'information d'usure des garnitures (7) . Ainsi que d'un maximum de 12 voyants lumineux (22), destinés à l'information relative à la température des freins.The (fig 3), represents the diagram of electrical connection in the case of combined use of the wear and temperature detection systems of the linings. the housing (19) is equipped with a maximum of 12 LEDs (21), red in color intended for the wear information of the linings (7). As well as a maximum of 12 indicator lights (22), intended for information relating to the brake temperature.
Le boitier (19), est raccordé au + du véhicule à l'aide d'un fil électrique (23), protège par un fusible (24) , et à la masse du véhicule soit à l'aide d'un fil électrique (25) , soit directement au niveau de la fixation du boitier (19) , dans certain cas d'utilisation.
Afin de vérifier le bon état de fonctionnement des systèmes un moyen de contrôle est constitué d'un bouton poussoir (26) lequel étant actionné permet d'allumer tous les LED (21) (22) du boitier (19) . Dans certain cas d'utilisation ce contrôle pourra se faire lors de la mise en contact du véhicule par l'intermédiaire du système de mise en marche (clef de contact) .The box (19) is connected to the vehicle + using an electric wire (23), protected by a fuse (24), and to the vehicle ground either using an electric wire ( 25), or directly at the attachment of the housing (19), in certain cases of use. In order to check that the systems are in good working order, a control means consists of a push button (26) which, when actuated, makes it possible to light all the LEDs (21) (22) of the housing (19). In certain cases of use, this control can be done when the vehicle is brought into contact via the starting system (ignition key).
Ainsi l'invention vise un système destiné d'une part à informé qu'est atteint la limite acceptable d'usure des garnitures de frein à tambour et d'autre part indique en temps constant le niveau de température de ces mêmes garnitures, et ceci pour tout type de véhicule par exemple camions.etc, caractérisé en ce qu'il est constitué, d'une part, d'un rivet (1) , isolé électriquement (2) (3) implanté dans le logement standart (16) prévu pour le rivetage des garnitures de frein à tambour (7), et en ce que d'autre part, ce rivet est relié par une rondelle de cuivre (4) et un fil électrique (5) à un boitier de réception (9) (19) pourvu de moyen de visualisation (10) (21) . Ce système peut-être ainsi pourvu d'une sonde thermique (17) relié par un fil électrique (18) à un boitier de réception (19) pourvu de moyen de visualisation (22) .Thus the invention relates to a system intended on the one hand for informing that the acceptable wear limit of the drum brake linings has been reached and on the other hand indicates in constant time the temperature level of these same linings, and this for any type of vehicle, for example trucks. etc., characterized in that it consists, on the one hand, of a rivet (1), electrically insulated (2) (3) installed in the standard housing (16) provided for riveting the drum brake linings (7), and in that, on the other hand, this rivet is connected by a copper washer (4) and an electric wire (5) to a receiving box (9) ( 19) provided with display means (10) (21). This system can thus be provided with a thermal probe (17) connected by an electric wire (18) to a reception box (19) provided with display means (22).
Selon d'autres carctéristiques : le boitier de réception (9) comporte des moyens d'alimentation électrique du type pile-batteries de sorte à être autonome, et être de ce fait utilisé sur des remorques tractées même si celles-ci sont détachées du tracteur.According to other characteristics: the receiving box (9) comprises electrical supply means of the battery-cell type so as to be autonomous, and therefore be used on towed trailers even if these are detached from the tractor .
- Le boitier (9) comporte un bouton poussoir (15) de contrôle de la charge par une lampe (11) . - Le rivet (1) isolé (2) (3), est mis à la place d'un rivet standart, logé dans le premier tiers de la garniture (7) compressée, et dont la tête est au moins de 1 millimètre plus haute que les autres rivets, ceci afin d'assurer en préliminaire le contact avec le tambour au nivaeu d'usure de garniture désiré, celui-ci étant réalisé de la même manière, en cuivre électrolytique.- The housing (9) comprises a push button (15) for controlling the charge by a lamp (11). - The isolated rivet (1) (2) (3) is replaced by a standard rivet, housed in the first third of the compressed gasket (7), the head of which is at least 1 millimeter higher than the other rivets, this in order to ensure, as a preliminary, contact with the drum at the desired level of wear on the lining, the latter being made in the same way, of electrolytic copper.
- Le rivet (1) de détection est isolé électriquement par rapport au support de garniture (6) par une gaine (2) et une rondelle (3) disposé entre celui-ci et la rondelle cuivre (4) sous le partie rabattue en rivet (1) , cette isolation acceptant les montées en température dues au freinage.
- Le boitier de visualisation (9) destiné à être monté sur des remorques et équipé de piles-batteries; et est pourvu d'un fil électrique relié à la borne positive de celle-ci, destiné à être connecté au + constant du véhicule de sorte à réalimenter les piles-batteries rechargeables en courant lorsque le remorque est rattachée au véhicule tracteur.- The detection rivet (1) is electrically insulated from the lining support (6) by a sheath (2) and a washer (3) disposed between the latter and the copper washer (4) under the part folded down as a rivet (1), this insulation accepting temperature rises due to braking. - The display unit (9) intended to be mounted on trailers and fitted with battery cells; and is provided with an electric wire connected to the positive terminal thereof, intended to be connected to the constant + of the vehicle so as to replenish the rechargeable battery cells with current when the trailer is attached to the towing vehicle.
- La sonde thermique (17) est en contact avec le support de garniture (6) et immobilisée après rivetage sous la rondelle isolante (3) . - Le boitier de visualisation (19) destiné à être fixé au tableau de bord de véhicule est pourvu de voyant lumineux (21) (22) indiquant l'état d'usure des garnitures (7) ainsi que le niveau de température des freins, et ceci pour chaque roue de véhicule. - Le boitier (19) combinant la détection, l'usure (21) et la température (22) permet au condusteur de visualiser en temps constant l'état du système de freinage par roue, et ainsi de détecter les anomalies lui permettant de modifier sa conduite si nécessaire.- The thermal probe (17) is in contact with the packing support (6) and immobilized after riveting under the insulating washer (3). - The display unit (19) intended to be fixed to the vehicle dashboard is provided with indicator light (21) (22) indicating the state of wear of the linings (7) as well as the temperature level of the brakes, and this for each vehicle wheel. - The box (19) combining detection, wear (21) and temperature (22) allows the driver to view the state of the brake system by wheel in constant time, and thus detect anomalies allowing him to modify his conduct if necessary.
FEUILLE DE REMPLACEMENT (RÈGLE 26)
SUBSTITUTE SHEET (RULE 26)
Claims
REVENDICATIONS
1) Sytème destiné d'une part à informé qu'est atteint la limite acceptable d'usure des garnitures de frein à tambour pour tout type de véhicule, et d'autre part à indiqué en temps constant le niveau de température de ces mêmes garnitures, système plus particulièrement destiné aux véhicules industriels tels que, camions, bus, camionnettes, remorques et même voitures particulières, caractérisé en ce qu'il est constitué, d'une part d'un rivet (1) isolé électriquement (2) (3) implantédans le logement standart (16) prévu pour le rivetage des garnitures (7) de frein à tambour, et en ce que d'autre part, ce rivet est relié par une rondelle de cuivre (4) , une sonde thermique (17) , et deux fils électriques (5) (18) , reliés à un boitier de réception (19) (9) , pourvu de moyen de visualisation (10) (21) (22) . 2) Système selon revendication 1, caractérisé en ce que le rivet (1) isolé (2) (3) est mis à la place d'un rivet standart, logé dans le premier tiers de la garniture (7) compressée, et dont la tête est au moins de 1 millimètre plus haute que les autres rivets, ceci afin d'assurer en préliminaire le contact avec le tambour au niveau d'usure désiré, celui-ci étant réalisé de la même manière en cuivre électrolytique.1) System intended on the one hand to inform that the acceptable limit of wear of the brake linings for all types of vehicle has been reached, and on the other hand to indicate in constant time the temperature level of these same linings , system more particularly intended for industrial vehicles such as, trucks, buses, vans, trailers and even passenger cars, characterized in that it consists, on the one hand of an electrically insulated rivet (1) (2) (3 ) implanted in the standard housing (16) provided for the riveting of the drum brake linings (7), and in that, on the other hand, this rivet is connected by a copper washer (4), a thermal probe (17) , and two electric wires (5) (18), connected to a reception box (19) (9), provided with display means (10) (21) (22). 2) System according to claim 1, characterized in that the isolated rivet (1) (2) (3) is replaced by a standard rivet, housed in the first third of the gasket (7) compressed, and the head is at least 1 millimeter higher than the other rivets, this in order to ensure in preliminary contact with the drum at the desired level of wear, this one being realized in the same way in electrolytic copper.
3) Système selon les revendications 1 et 4, caractérisé en ce que le rivet de détection d'usure (1), est isolé électriquement par rapport aux supports des garnitures par une gaine (2), et une rondelle (3), solidaire de la rondelle cuivre (4) , disposée entre celle-ci et le support de garniture (6) , sous la partie rabattue du rivet (1) , cette isolation acceptant des montées en température dues au freinage.3) System according to claims 1 and 4, characterized in that the wear detection rivet (1) is electrically isolated from the lining supports by a sheath (2), and a washer (3), integral with the copper washer (4), disposed between the latter and the lining support (6), under the folded back portion of the rivet (1), this insulation accepting temperature rises due to braking.
4) Système selon revendication 1, caractérisé en ce que dans le cas de détection seule d'usure des garnitures de frein, le boitier de réception (9) , fixé sur remorques, comporte des moyens d'alimentation électrique du type, piles-batteries, de sorte à être autonome et peut de ce fait être uilisé sur des remorques tractées même si celles-ci sont détachées du tracteur.4) System according to claim 1, characterized in that in the case of only detection of wear of the brake linings, the receiving unit (9), fixed on trailers, comprises means of electrical supply of the type, battery-batteries , so as to be autonomous and can therefore be used on towed trailers even if these are detached from the tractor.
5) Système selon les revendications 1 et 4 caractérisé en ce que le boitier de visualisation (9) , destiné à ne détecter que l'usure des garnitures de frein et à être fixé sur des remorques, et équipé de piles-batteries, et est pourvu d'un fil électrique relié aux bornes positives de celles-ci au + constant du véhicule de sorte à réalimenter les piles- batteries, rechargeables en courant, lorque la remorque est rattachée au véhicule tracteur.
6) Système selon les revendications 1, 4 et 5 caractérisé en ce que le boitier autonome destiné à la détection d'usure des garnitures de frein sur remorques (9) comporte un bouton poussoir (15) de contrôle de la charge par une lampe (11) de couleur verte.5) System according to claims 1 and 4 characterized in that the display unit (9), intended to detect only the wear of the brake linings and to be fixed on trailers, and fitted with battery cells, and is provided with an electric wire connected to the positive terminals of these + constant of the vehicle so as to replenish the batteries, rechargeable with current, when the trailer is attached to the towing vehicle. 6) System according to claims 1, 4 and 5 characterized in that the autonomous housing intended for the detection of wear of the brake linings on trailers (9) comprises a push button (15) for controlling the load by a lamp ( 11) green in color.
7) Sytème selon revendication 1, caractérisé en ce que la détection de température d'effectué sur le support (6) à l'aide d'une sonde (17) et est fixée par l'intermédiaire du rivet de détection d'usure (1) et immobilisée sous la rondelle isolante (3) .7) System according to claim 1, characterized in that the temperature detection carried out on the support (6) using a probe (17) and is fixed by means of the wear detection rivet ( 1) and immobilized under the insulating washer (3).
8) Système selon les revendications 1 et 7, caractérisé en ce que la lecture des niveaux de température est visualisée au tableau de bord du véhicule à l'aide de voyants lumineux ou à aiguille permettant la détection en temps constant de la température des garnitures de frein.8) System according to claims 1 and 7, characterized in that the reading of the temperature levels is displayed on the dashboard of the vehicle using indicator lights or needle allowing the detection in constant time of the temperature of the linings of brake.
9) Système selon les revendications 1, 2, 7 et 8 caractérisé en ce que le boitier de visualisation (19) (fig 3) , permet l'indication combinée d'usure (21) e de température (22), et de ce fait peut amener le conducteur à modifier sa conduite si nécessaire.
9) System according to claims 1, 2, 7 and 8 characterized in that the display unit (19) (fig 3), allows the combined indication of wear (21) and temperature (22), and this fact may cause the driver to change his driving if necessary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR1995/000073 WO1996023145A1 (en) | 1995-01-24 | 1995-01-24 | Drum brake lining wear and temperature indicating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/FR1995/000073 WO1996023145A1 (en) | 1995-01-24 | 1995-01-24 | Drum brake lining wear and temperature indicating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996023145A1 true WO1996023145A1 (en) | 1996-08-01 |
Family
ID=9474883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1995/000073 WO1996023145A1 (en) | 1995-01-24 | 1995-01-24 | Drum brake lining wear and temperature indicating system |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO1996023145A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004106766A1 (en) * | 2003-06-03 | 2004-12-09 | Federal-Mogul Friction Products Gmbh | Bake lining wear indicator |
| CN116215683A (en) * | 2023-03-22 | 2023-06-06 | 河北中拟科技有限公司 | Battlefield inducer capable of being repaired for many times |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3689880A (en) * | 1970-09-16 | 1972-09-05 | Robert G Mckee | Vehicle brake warning device |
| FR2260723A1 (en) * | 1974-02-13 | 1975-09-05 | Ferodo Sa | Brake shoe wear indicator system - uses two embedded electrodes which are shorted when wear limit is reached |
| US4649370A (en) * | 1984-06-15 | 1987-03-10 | Thomason Linda R | Brake condition indicator |
| GB2200699A (en) * | 1987-02-05 | 1988-08-10 | Rudkin Wiley Corp | A brake condition monitoring system |
| EP0297429A1 (en) * | 1987-07-03 | 1989-01-04 | Mannesmann Kienzle GmbH | Sensor for the working condition of brakes |
| FR2708319A1 (en) * | 1993-05-10 | 1995-02-03 | Mahon Jean | System intended on the one hand to indicate that the limit of wear of drum brake linings has been reached for any vehicle, and to indicate the temperature of the linings |
-
1995
- 1995-01-24 WO PCT/FR1995/000073 patent/WO1996023145A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3689880A (en) * | 1970-09-16 | 1972-09-05 | Robert G Mckee | Vehicle brake warning device |
| FR2260723A1 (en) * | 1974-02-13 | 1975-09-05 | Ferodo Sa | Brake shoe wear indicator system - uses two embedded electrodes which are shorted when wear limit is reached |
| US4649370A (en) * | 1984-06-15 | 1987-03-10 | Thomason Linda R | Brake condition indicator |
| GB2200699A (en) * | 1987-02-05 | 1988-08-10 | Rudkin Wiley Corp | A brake condition monitoring system |
| EP0297429A1 (en) * | 1987-07-03 | 1989-01-04 | Mannesmann Kienzle GmbH | Sensor for the working condition of brakes |
| FR2708319A1 (en) * | 1993-05-10 | 1995-02-03 | Mahon Jean | System intended on the one hand to indicate that the limit of wear of drum brake linings has been reached for any vehicle, and to indicate the temperature of the linings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004106766A1 (en) * | 2003-06-03 | 2004-12-09 | Federal-Mogul Friction Products Gmbh | Bake lining wear indicator |
| CN116215683A (en) * | 2023-03-22 | 2023-06-06 | 河北中拟科技有限公司 | Battlefield inducer capable of being repaired for many times |
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