EP0252782A1 - Contactor for control member operated by foot and its application in a brake pedal, in particular for cars - Google Patents

Contactor for control member operated by foot and its application in a brake pedal, in particular for cars Download PDF

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Publication number
EP0252782A1
EP0252782A1 EP87401275A EP87401275A EP0252782A1 EP 0252782 A1 EP0252782 A1 EP 0252782A1 EP 87401275 A EP87401275 A EP 87401275A EP 87401275 A EP87401275 A EP 87401275A EP 0252782 A1 EP0252782 A1 EP 0252782A1
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EP
European Patent Office
Prior art keywords
contactor
return means
base
support
pedal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87401275A
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German (de)
French (fr)
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EP0252782B1 (en
Inventor
Fabrice Hauguel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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Application filed by Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0252782A1 publication Critical patent/EP0252782A1/en
Application granted granted Critical
Publication of EP0252782B1 publication Critical patent/EP0252782B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/16—Operating parts, e.g. push-button adapted for operation by a part of the human body other than the hand, e.g. by foot

Definitions

  • the present invention relates to foot-operated control members and relates in particular to a switch for a pedal, in particular for a pedal, and its application to a brake pedal.
  • an automobile comprises various sub-assemblies, the implementation of which is ensured by means of a foot-operated control member.
  • This is the case in particular of the clutch accelerator and the brakes which are actuated by means of different pedals arranged at the lower front part of the passenger compartment, below the steering column which they frame.
  • the switching on and off of the "stop" lights are controlled by contactors which are placed on a fixed part of the vehicle, close to the brake pedal and, preferably, towards the articulation of the latter. It is therefore understandable that, usually, these contactors are not very accessible and that their adjustment is in these particularly delicate conditions.
  • the master cylinder actuated by the brake pedal is usually housed in the engine compartment and that the entire crankset. to which the brake pedal belongs, is housed in the passenger compartment, it is particularly delicate and almost impossible to ensure precise and reproducible adjustment so that the lighting of the "stops" is reproduced in exactly the same way for all vehicles , of the same type or not.
  • the invention provides '' associate a very special design switch to the pedal.
  • the invention tends to remedy this lack of reliability.
  • the contactor according to the invention for a pedal provided with a rigid sole covered with a cap intended to receive a force for its implementation comprises a first fixed contact pad integral with the sole and a second contact pad movable relative to the first pad between a rest position or it is distant from it and a second active position or it rests against the latter under the force exerted on the cover.
  • This contactor is characterized according to the invention, in that it comprises, articulated together near an edge of the sole, on the one hand, a base which is fixed to the sole and which receives the first contact pad and return means of the second contact pad and, on the other hand, a cover support which is movable between a rest position or it is kept apart from the base by the return means and by a stop and an active position where it is applied against the base by the force exerted on the cap.
  • a pedal switch according to the invention associated with an automobile pedal and, in particular. to a brake pedal for such a vehicle.
  • the pedal 10 comprises a body 11 which ends in a sole 12 which is covered with a cover 13.
  • the pedal is mounted in the body or the structure of the vehicle in any conventional known manner, so as to be able to tilt according to a horizontal axis, perpendicular to the plane of the design sheet, when pressure is exerted on the foot normal to the surface of the cap.
  • a contactor 20 As we can see, between the cap and the sole. is housed a contactor 20 according to the invention This contactor comprises a base or base 21, a cap support 22, contact pads or grains 231, 232 and connection wires 24 connecting the contactor to a source of electrical energy and to the bulbs of "stop" lights, the latter components not being represented.
  • the pedestal or base 21 made of an electrically insulating material, er this relatively substantive plane and approximately rectangular applied against the sole 12 and a top with a curved outer surface opposite the sole.
  • This base carries on its bottom, which rests on the sole, fixing means 212, for example elastic snap fingers or other solution such as rivets or screws or an appropriate adhesive.
  • fixing means 212 for example elastic snap fingers or other solution such as rivets or screws or an appropriate adhesive.
  • the opposite face or above, of approximately cylindrical configuration, forms a support 211 whose role will be explained below.
  • the cap support 22 is mounted movable relative to the base 21 by means of a hinge pin 221 so as to be able to tilt relative to the latter. This axis is perpendicular to the plane of the drawing sheet.
  • the cap support 22 is also equipped with a stop 222 which cooperates with the base 21 so as to limit the stroke of the cap support in the direction of an anti-clockwise tilting. As seen in Fig. 1, in this embodiment this stop 222 consists of a spout. integral with the cap support 22, which cooperates with a flat portion of the base 21.
  • the cap support 22 is also fitted with return means 223 which, normally, urge it counterclockwise, around its axis 221 of so that its maximum deployed position is fixed and limited by the stop 222.
  • the return means 223 tend to place the cap support 22 in the maximum projecting position.
  • the cap support 22 rocks, along its axis 221, and comes to rest against the support 211.
  • the contact pads are divided into a fixed stud 231 secured of the base 21 and a movable stud 232 secured to the return means 223. It is therefore understood that when you press your foot on the cap to depress the brake pedal, you first move the cap and the cap support which is articulated on the axis, so that you just apply one against the 'other the two contact pads: this closes the electrical circuit.
  • the cover support, the base, the return means, the stop and the contact pads form a whole, independent and removable, which constitutes a contactor having a small clean stroke independent of the stroke of the brake pedal.
  • the return means are configured in such a way that the stroke for applying the two contact pads against each other, is less than the stroke necessary for the cap support to come to rest on the support of the base.
  • the travel or travel c of the chosen cap support of the order of 1 mm is exaggerated for the clarity of the drawing.
  • the contact pads slide relatively to each other after they have started to touch, which has the effect of ensuring self-cleaning. t ravel and so prevent electrical conduction failure that would result, for example, oxidation of the contact pads.
  • the body 11 of the pedal is in the manner of a square beam whose two wings are bent.
  • the body thus delimits a rib in which the connection wires 2 4 can be housed.
  • Fig. 3 is a view, similar to that of Fig.1, a variant reslisation of the pedal switch according to the invention.
  • the elements which perform the same function are identified by the same reference numbers as above, but assigned the sign "prime”.
  • the return means are in the form of a capsule, parallelepipedic or cylindrical, made for example of plastic.
  • This capsule is presented in the manner of a closed box whose opposite faces are relatively rigid and whose lateral faces are elastically deformable, at least locally.
  • This capsule is made for example of plastic, one-piece, molded with the contact pads in the form of prisoners, or else, it is made of parts joined together for example by gluing, by ultrasonic welding or using solvent or by interlocking and snapping.
  • the capsule has, if necessary, at least one vent hole which allows it to compress when an effort is exerted on it if it is not to play, then, the role of a pneumatic spring.
  • the choice of material and geometrical configuration is made so that the capsule can return, resume its normal initial configuration, not overwritten, while recalling the cap and the cap support in the deployed position.
  • the structure of the axis of articulation of the cap support on the base has also been simplified.
  • the contact between the cover support and the return means is provided by a protuberance 224 or 224 ′ which is either secured to the cover support or secured to the return means, respectively.
  • This protuberance is presented in one of the cases as a projection obtained by stamping of the cap support and in the other of the cases as coming from molding with the return means.
  • a screw which makes it possible to adjust the relative strokes between the cover support and its support, on the one hand, and between the contact pads on the other hand. After possible adjustment of such a screw, the latter can be immobilized, for example by gluing.
  • the pedal switch according to the invention can be used for other applications than those of a brake pedal.
  • a contactor can be associated with a declutching pedal when the use of a contactor is compulsory for the speed regulation or cut-off of infection in deceleration function, as is the case, for example, when a vehicle is equipped with an automatic gearbox.
  • the contactor according to the invention can be fitted to all the braking devices including the so-called "no-stroke" hydraulic braking systems where the brake pedal does not act via a linkage on the piston of the master cylinder of the braking system but on the contrary on a valve of the hydraulic circuit.
  • the stroke of the brake pedal is pra nically zero to trigger the operation of the braking system.
  • the return means are adjusted so that the sensitivity of the contactor is such that it reacts to a force of 0.4 daN.
  • the sensitivity of this contactor can be modified by changing the shape of the return means.
  • a contactor according to the invention of the type called "contact-work” was used, but it is clear that it can also be of the type called “contact-rest”. The choice depends on the operating mode of the electrical circuit with which it is associated.
  • the contactor according to the invention significantly increases safety, because unlike the "stop" light switches currently existing, or the ignition lights may occur only after crossing the stroke corresponding to the start of braking, this switch closes and therefore triggers the lighting of the "stop” lights before the race activates, effectively causing the system to operate. braking, happen.

Abstract

This contactor (20) for a pedal (10) provided with a rigid soleplate (12) covered by a cover (13) intended to receive a force in order to work it, comprises a first contact stud (231) solidly fixed to the soleplate and a second contact stud (232) which can move between a rest position in which it is away from the first stud and an active position in which it rests against the latter under the action of the force exerted on the cover. This contactor comprises, articulated one with the other near one edge of the soleplate, on the one hand a plinth (21) which is fixed to the soleplate and which receives the first stud and means (223) of returning the second stud and, on the other hand, a cover support (22) which can move between a rest position in which it is held separated from the plinth by return means and by a stop (222) and an active position in which it is applied against the plinth (21) through the force exerted on the cover. Application to automobile brake pedals. <IMAGE>

Description

La presente invention concerne les organes de commande actionnes au pied et est relative en particulier à un contacteur pour pedale notamment d'automobile et son application à une pedale de frein.The present invention relates to foot-operated control members and relates in particular to a switch for a pedal, in particular for a pedal, and its application to a brake pedal.

Comme on le sait, une automobile comprend divers sous-ensembles dont la mise en oeuvre est as- suree à l'aide d'un organe de commande actionne au pied. C'est le cas en particulier de l'accelerateur de l'embrayage et des freins qui sont actionnes à l'aide de differentes pedales disposees à la partie anterieure inferieure de l'habitacle, au-dessous de la colonne de direction qu'elles encadrent.As is known, an automobile comprises various sub-assemblies, the implementation of which is ensured by means of a foot-operated control member. This is the case in particular of the clutch accelerator and the brakes which are actuated by means of different pedals arranged at the lower front part of the passenger compartment, below the steering column which they frame.

Pour des raisons de securite, lorsqu'un conducteur enfonce la pedale de frein pour ralentir et/ou arreter son vehicule, cette action se manifeste a l'extérieur du vehicule par l'allumage de feux dits de "stop" places à l'arriere. Ces feux, lorsqu ils s'allument. permettent d'alerter les conducteurs des ve- hicules qui suivent d'une action tendant au ralentissement et/ou a l'arret du vehicule circulant devant eux. Cette signalisation permet, en principe, d'eviter les heurts qui resulteraient d'une absence d'indication de l'action de ralentissement ou de freinage.For safety reasons, when a driver presses the brake pedal to slow down and / or stop his vehicle, this action is manifested outside the vehicle by the lighting of so-called "stop" lights in the rear. . These lights, when they light up. used to alert drivers of vehicles following an action tending to slow down and / or stop the vehicle traveling in front of them. This signaling makes it possible, in principle, to avoid impacts which would result from an absence of indication of the deceleration or braking action.

Habituellement, l'allumage et l'extinction des feux de "stop" sont commandes par des contacteurs qui sont places sur une partie fixe du véhicule, à proximité de la pedale de frein et, de preference, vers l'articulation de cette derniere. On conçoit donc, qu'habituellement, ces contacteurs sont peu accessibles et que leur reglage est dans ces conditions particulierement délicat.Usually, the switching on and off of the "stop" lights are controlled by contactors which are placed on a fixed part of the vehicle, close to the brake pedal and, preferably, towards the articulation of the latter. It is therefore understandable that, usually, these contactors are not very accessible and that their adjustment is in these particularly delicate conditions.

Comme tout conducteur de vehicule automobile a pu le constater, lorsqu'il enfonce la pédale de frein, que ce soit pour ralentir ou pour immobiliser le véhicule, l'allumage des feux de "stop" ne se produit qu'apres une course initiale ou course morte; pendant cette course morte, le systeme de freinage peut etre deJa mis en action, commençant a ralentir le vehicule sans que cela soit signale par un allumage des feux de "stop". Cette course morte est fonction du reglage du vehicule; elle est variable d'un type de véhicule à un autre, et pour un type donne, d'un vehicule a un autre. Cette course morte est habituellement de l'ordre de deux a cinq millimetres environ, qui correspond, du fait de la timonerie de la pedale de frein, a une course notablement redulte pour le contacteur comprise entre 0,5 et 1 mm environ.As any driver of a motor vehicle has seen, when he applies the brake pedal, whether to slow down or to stop the vehicle, the ignition of the "stop" lights occurs only after an initial race or dead race; during this dead race, the braking system can be put into action already, starting to slow down the vehicle without this being signaled by the lighting of the "stop" lights. This dead travel is a function of the vehicle setting; it varies from one type of vehicle to another, and for a given type, from one vehicle to another. This dead travel is usually of the order of two to five millimeters approximately, which corresponds, due to the linkage of the brake pedal, to a significantly reduced travel for the contactor of between 0.5 and 1 mm approximately.

Etant donne que le maitre-cylindre actionné par la pedale de frein est habituellement loge dans le compartiment moteur et que l'ensemble du pédalier. auquel appartient la pedale de frein, est lui loge dans l'habitacle, il est particulierement delicat et presque impossible d'assurer un reglage precis et reproductible pour que l'allumage des "stops" se reproduise exactement de la meme manière pour tous les véhicules, d'un meme type ou non.Given that the master cylinder actuated by the brake pedal is usually housed in the engine compartment and that the entire crankset. to which the brake pedal belongs, is housed in the passenger compartment, it is particularly delicate and almost impossible to ensure precise and reproducible adjustment so that the lighting of the "stops" is reproduced in exactly the same way for all vehicles , of the same type or not.

Pour remedier à cette disparite de reglage et afin de faire en sorte que l'on puisse executer les réglages non plus lors du montage du vehicule sur la chaîne de production mais indépendamment, preala- blement à cette operation, on propose selon l'invention d'associer à la pedale un contacteur de conception bien particuliere.In order to remedy this disparity in adjustment and in order to make it possible to carry out the adjustments no longer during assembly of the vehicle on the production line but independently, prior to this operation, the invention provides '' associate a very special design switch to the pedal.

Pour tenter de resoudre cette difficulte on a deJa propose d'incorporer à une pedale de frein un contacteur. Un tel contacteur est place entre la semelle de la pedale et une coiffe elastique qui recouvre cette derniere. Une telle solution manque de fiabilité du fait que la force exercee par le pied sur la pédale ecrase les elements de contact électrique du contacteur et risque ainsi de les detériorer rapidement.In an attempt to resolve this difficulty, we have already proposed incorporating a contactor into a brake pedal. Such a contactor is placed between the sole of the pedal and an elastic cap which covers the latter. Such a solution lacks reliability due to the fact that the force exerted by the foot on the pedal crushes the electrical contact elements of the contactor and thus risks damaging them quickly.

L'invention tend à remédier à ce manque de fiabilite.The invention tends to remedy this lack of reliability.

Le contacteur selon l'invention pour pedale munie d'une semelle rigide recouverte d'une coiffe destinee a recevoir un effort pour sa mise en oeuvre comprend un premier plot de contact fixe solidaire de la semelle et un second plot de contact mobile relativement au premier plot entre une position de repos ou il est distant de celui-ci et une seconde position active ou il repose contre ce dernier sous l'effort exerce sur la coiffe. Ce contacteur est caracterise selon l'invention, en ce qu il comprend, articulés entre eux a proximité d'un bord de la semelle, d'une part, un socle qui est fixe a la semelle et qui reçoit le premier plot de contact et des moyens de rappel du second plot de contact et, d'autre part, un support de coiffe qui est mobile entre une position de repos ou il est maintenu ecarte du socle par les moyens de rappel et par une butee et une position active ou il est applique contre le socle par l'effort exerce sur la coiffe.The contactor according to the invention for a pedal provided with a rigid sole covered with a cap intended to receive a force for its implementation comprises a first fixed contact pad integral with the sole and a second contact pad movable relative to the first pad between a rest position or it is distant from it and a second active position or it rests against the latter under the force exerted on the cover. This contactor is characterized according to the invention, in that it comprises, articulated together near an edge of the sole, on the one hand, a base which is fixed to the sole and which receives the first contact pad and return means of the second contact pad and, on the other hand, a cover support which is movable between a rest position or it is kept apart from the base by the return means and by a stop and an active position where it is applied against the base by the force exerted on the cap.

D'autres caractéristiques de l'invention apparaitront a la lecture de la description qui suit et à l'examen du dessin annexe, donne seulement à titre d'exemple, où :

  • - la Fig. 1 est une coupe longitudinale partielle schematique d'un mode de realisation d'un contacteur pour pedale suivant l'invention;
  • - la Fig. 2 est une section suivant la ligne A-A de la Fig. 1; et,
  • - la Fig. 3 est une coupe longitudinale, analogue a celle de la Fig. 1, d'une variante de realisation.
Other characteristics of the invention will appear on reading the following description and on examining the appended drawing, given only by way of example, where:
  • - Fig. 1 is a schematic partial longitudinal section of an embodiment of a pedal contactor according to the invention;
  • - Fig. 2 is a section along the line AA in FIG. 1; and,
  • - Fig. 3 is a longitudinal section, similar to that of FIG. 1, of an alternative embodiment.

Sur la Fig. 1, on a dessine un mode de realisation d'un contacteur pour pedale selon l'invention associe a une pédale d'automobile et, en particulier. à une pedale de frein pour un tel véhicule.In Fig. 1, we have drawn an embodiment of a pedal switch according to the invention associated with an automobile pedal and, in particular. to a brake pedal for such a vehicle.

Comme on le voit sur la coupe longitudinale schematique de la Fig. 1, la pedale 10 comprend un corps 11 qui se termine par une semelle 12 qui est revetue d'une coiffe 13. La pedale est montee dans la caisse ou la structure du véhicule de toute maniere connue classique, de maniere a pouvoir basculer suivant un axe horizontal, perpendiculaire au plan de la feuille du dessin, lorsqu'on exerce une pression du pied normale a la surface de la coiffe.As can be seen in the schematic longitudinal section in FIG. 1, the pedal 10 comprises a body 11 which ends in a sole 12 which is covered with a cover 13. The pedal is mounted in the body or the structure of the vehicle in any conventional known manner, so as to be able to tilt according to a horizontal axis, perpendicular to the plane of the design sheet, when pressure is exerted on the foot normal to the surface of the cap.

On ne s'attardera pas plus longtemps à de- crire ce qui est courant dans le secteur technique auquel appartient l'invention et dont l'homme du métier est familier.We will not dwell any longer on describing what is common in the technical sector to which the invention belongs and with which those skilled in the art are familiar.

Comme on le voit, entre coiffe et semelle. est loge un contacteur 20 selon l'invention Ce contacteur comprend un socle ou embase 21, un support de coiffe 22, des plots ou grains de contact 231, 232 et des fils de connection 24 reliant le contacteur a une source d'énergie électrique et aux ampoules des feux de "stop", ces derniers constituants n'étant pas representes.As we can see, between the cap and the sole. is housed a contactor 20 according to the invention This contactor comprises a base or base 21, a cap support 22, contact pads or grains 231, 232 and connection wires 24 connecting the contactor to a source of electrical energy and to the bulbs of "stop" lights, the latter components not being represented.

Pour la commodite de la description et pour faciliter la représentation, seul est décrit et re- presente ce qui contribue directement ou indirectement a l'invention.For the convenience of the description and to facilitate the representation, only that which directly or indirectly contributes to the invention is described and represented.

Le socle ou embase 21, fait en une matière électriquement isolante, presente un fond relativement plan et approximativement rectangulaire applique contre la semelle 12 et un dessus avec une surface extérieure courbe a l'oppose de la semelle. Cette embase porte sur son fond, qui repose sur la semelle, des moyens de fixation 212, par exemple des doigts elastiques d'encliquetage ou autre solution telle que des rivets ou des vis ou un adhesif approprie. La face opposee ou dessus, de configuration approximativement cylindrique, forme un appui 211 dont on expliquera par la suite le rôle.The pedestal or base 21, made of an electrically insulating material, er this relatively substantive plane and approximately rectangular applied against the sole 12 and a top with a curved outer surface opposite the sole. This base carries on its bottom, which rests on the sole, fixing means 212, for example elastic snap fingers or other solution such as rivets or screws or an appropriate adhesive. The opposite face or above, of approximately cylindrical configuration, forms a support 211 whose role will be explained below.

Le support de coiffe 22 est monté mobile relativement à l'embase 21 grace à un axe d'articulation 221 afin de pouvoir basculer par rapport à celle-ci. Cet axe est perpendiculaire au plan de la feuille du dessin. Le support de coiffe 22 est aussi équipe d'une butee 222 qui coopere avec l'embase 21 de maniere a limiter la course du support de coiffe dans le sens d'un basculement anti-horaire. Comme on le voit sur la Fig. 1, dans ce mode de realisation cette butee 222 se compose d'un bec. solidaire du support de coiffe 22, qui coopere avec un meplat de l'embase 21. Le support de coiffe 22 est encore equipe de moyens de rappel 223 qui, normalement, le sollicitent dans le sens anti-horaire, autour de son axe 221 de maniere que sa position deployee maximale soit fixee et limitée par la butee 222. En position de repos les moyens de rappel 223 tendent a placer le support de coiffe 22 en position saillante maximale. Au contraire, lorsqu'on presse sur la coiffe 13, le support de coiffe 22 bascule, suivant son axe 221, et vient reposer contre l'appui 211. Comme on le voit, les plots de contact se repartissent en un plot fixe 231 solidaire de l'embase 21 et un plot mobile 232 solidaire des moyens de rappel 223. On comprend donc que lorsqu'on appuie du pied sur la coiffe pour enfoncer la pedale de frein, on déplace d'abord la coiffe et le support de coiffe qui est articulé sur l'axe, si bien que l'on vient appliquer l'un contre l'autre les deux plots de contact : on ferme de la sorte le circuit électrique.The cap support 22 is mounted movable relative to the base 21 by means of a hinge pin 221 so as to be able to tilt relative to the latter. This axis is perpendicular to the plane of the drawing sheet. The cap support 22 is also equipped with a stop 222 which cooperates with the base 21 so as to limit the stroke of the cap support in the direction of an anti-clockwise tilting. As seen in Fig. 1, in this embodiment this stop 222 consists of a spout. integral with the cap support 22, which cooperates with a flat portion of the base 21. The cap support 22 is also fitted with return means 223 which, normally, urge it counterclockwise, around its axis 221 of so that its maximum deployed position is fixed and limited by the stop 222. In the rest position, the return means 223 tend to place the cap support 22 in the maximum projecting position. On the contrary, when the cap 13 is pressed, the cap support 22 rocks, along its axis 221, and comes to rest against the support 211. As can be seen, the contact pads are divided into a fixed stud 231 secured of the base 21 and a movable stud 232 secured to the return means 223. It is therefore understood that when you press your foot on the cap to depress the brake pedal, you first move the cap and the cap support which is articulated on the axis, so that you just apply one against the 'other the two contact pads: this closes the electrical circuit.

De ce qui precede il est clair que le support de coiffe, l'embase, les moyens de rappel, la butée et les plots de contact forment un tout, indépendant et amovible, qui constitue un contacteur pre- sentant une faible course propre independante de la course de la pedale de frein.From the foregoing, it is clear that the cover support, the base, the return means, the stop and the contact pads form a whole, independent and removable, which constitutes a contactor having a small clean stroke independent of the stroke of the brake pedal.

Les moyens de rappel sont configures de maniere que la course pour faire s'appliquer l'un contre l'autre les deux plots de contact, soit inferieure à la course necessaire pour que le support de coiffe vienne reposer sur l'appui de l'embase. Dans le mode de réalisation illustre sur la Fig. 1, la course ou debattement c du support de coiffe choisi de l'ordre de 1mm est exageré pour la clarte du dessin. De la sorte, du fait de la déformation des moyens de rappel, les plots de contact glissent relativement l'un a l'autre apres qu'ils aient commence à se toucher, ce qui a pour effet d'assurer un auto-net- toyage et ainsi de prevenir une défaillance de conduction électrique qui resulterait, par exemple, d'une oxydation des plots de contact.The return means are configured in such a way that the stroke for applying the two contact pads against each other, is less than the stroke necessary for the cap support to come to rest on the support of the base. In the embodiment illustrated in FIG. 1, the travel or travel c of the chosen cap support of the order of 1 mm is exaggerated for the clarity of the drawing. In this way, due to the deformation of the return means, the contact pads slide relatively to each other after they have started to touch, which has the effect of ensuring self-cleaning. t ravel and so prevent electrical conduction failure that would result, for example, oxidation of the contact pads.

Comme on le voit en se reportant a la section transversale de la Fig. 2, le corps 11 de la pédalé se présente à la manière d'une poutre en equerre dont les deux ailes sont contre-coudées. Le corps delimite ainsi une nervure dans laquelle peuvent etre loges les fils de connection 24.As can be seen by referring to the cross section of FIG. 2, the body 11 of the pedal is in the manner of a square beam whose two wings are bent. The body thus delimits a rib in which the connection wires 2 4 can be housed.

La Fig. 3 est une vue, analogue à celle de la Fig.1, d'une variante de reslisation du contacteur pour pedale selon l'invention. Les eléments qui assurent la méme fonction sont reperés par les memes numeros de référence que precedemment, mais affectés du signe "prime".Fig. 3 is a view, similar to that of Fig.1, a variant reslisation of the pedal switch according to the invention. The elements which perform the same function are identified by the same reference numbers as above, but assigned the sign "prime".

On remarque immediatement que la diffférence essentielle entre ces deux modes de realisation reside dans le changement de la configuration des moyens de rappel.We immediately notice that the essential difference between these two embodiments lies in the change in the configuration of the return means.

Dans ce mode de realisation, les moyens de rappel se presentent sous la forme d'une capsule, parallelepipedique ou cylindrique, faite par exemple en matiere plastique. Cette capsule se presente a la maniere d'une boite fermee dont les faces opposees sont relativement rigides et dont les faces latérales sont deformables elastiquement, au moins localement. Cette capsule est faite par exemple en matiere plastique, monobloc, venue de moulage avec les plots de contact sous forme de prisonniers, ou bien, elle est faite de parties reunies par exemple par collage, par soudage aux ultra-sons ou a l'aide de solvant ou par emboitement et encliquetage. Quelle que soit la solution retenue, la capsule presente si necessaire au moins un trou d'évent qui lui permet de se comprimer lorsqu'on exerce un effort sur elle si elle ne doit pas Jouer, ensuite, le rôle d'un ressort pneumatique. Le choix du matériau et de la configuration géometrique est fait de maniere que la capsule puisse revenir, reprendre sa configuration initiale normale, non ecrasee, tout en rappelant la coiffe et le support de coiffe en position deployee.In this embodiment, the return means are in the form of a capsule, parallelepipedic or cylindrical, made for example of plastic. This capsule is presented in the manner of a closed box whose opposite faces are relatively rigid and whose lateral faces are elastically deformable, at least locally. This capsule is made for example of plastic, one-piece, molded with the contact pads in the form of prisoners, or else, it is made of parts joined together for example by gluing, by ultrasonic welding or using solvent or by interlocking and snapping. Whatever solution is chosen, the capsule has, if necessary, at least one vent hole which allows it to compress when an effort is exerted on it if it is not to play, then, the role of a pneumatic spring. The choice of material and geometrical configuration is made so that the capsule can return, resume its normal initial configuration, not overwritten, while recalling the cap and the cap support in the deployed position.

Dans cette variante de réalisation on a aussi simplifié la structure de l'axe d'articulation du support de coiffe sur le socle.In this variant embodiment, the structure of the axis of articulation of the cap support on the base has also been simplified.

Comme on le voit sur les Fig. 1 et 3, le contact entre le support de coiffe et les moyens de rappel est assure par une protuberance 224 ou 224' qui est soit solidaire du support de coiffe soit solidaire des moyens de rappel, respectivement. Cette protuberance se presente dans l'un des cas comme une saillie obtenue par emboutissage du support de coiffe et dans l'autre des cas comme venue de moulage avec les moyens de rappel.Il est clair que l'on peut utiliser une autre solution telle que par exemple une vis, ce qui permet de regler les courses relatives entre le support de coiffe et son appui, d'une part, et entre les plots de contact d'autre part. Apres reglage eventuel d'une telle vis cette derniere peut être immobilisee par exemple par collage.As seen in Figs. 1 and 3, the contact between the cover support and the return means is provided by a protuberance 224 or 224 ′ which is either secured to the cover support or secured to the return means, respectively. This protuberance is presented in one of the cases as a projection obtained by stamping of the cap support and in the other of the cases as coming from molding with the return means. It is clear that one can use another solution such as for example a screw, which makes it possible to adjust the relative strokes between the cover support and its support, on the one hand, and between the contact pads on the other hand. After possible adjustment of such a screw, the latter can be immobilized, for example by gluing.

Il est clair que le contacteur pour pedale selon l'invention peut etre utilise pour d'autres applications que celles d'une pedale de frein. Par exemple, un tel contacteur peut etre associe a une pedale de débrayage lorsque l'utilisation d'un contacteur est obligatoire pour la fonction regulation de vitesse ou coupure d'infection en deceleration, comme c'est le cas, par exemple, lorsqu un vehicule est equipe d'une boite de vitesse automatique.It is clear that the pedal switch according to the invention can be used for other applications than those of a brake pedal. For example, such a contactor can be associated with a declutching pedal when the use of a contactor is compulsory for the speed regulation or cut-off of infection in deceleration function, as is the case, for example, when a vehicle is equipped with an automatic gearbox.

On observera aussi que le contacteur selon l'invention peut équiper tous les dispositifs de freinage y compris les systemes de freinage hydraulique dits "sans course" où la pédale de frein n'agit pas par l'intermediaire d'une timonerie sur le piston du maitre-cylindre du système de freinage mais au contraire sur une vanne du circuit hydraulique. Dans de tels dispositifs de freinage hydraulique on sait que, contrairement aux systèmes classiques a maitre cylindre, la course de la pédale de frein est pratiquement nulle pour déclencher le fonctionnement du systeme de freinage.It will also be observed that the contactor according to the invention can be fitted to all the braking devices including the so-called "no-stroke" hydraulic braking systems where the brake pedal does not act via a linkage on the piston of the master cylinder of the braking system but on the contrary on a valve of the hydraulic circuit. In such hydraulic braking devices, it is known that, unlike conventional master cylinder systems, the stroke of the brake pedal is pra nically zero to trigger the operation of the braking system.

De préférence, on règle les moyens de rappel de manière que la sensibilité du contacteur soit telle qu'il reagisse a une force de 0,4 daN. On peut modifier la sensibilite de ce contacteur en changeant la forme des moyens de rappel. Dans les modes de real- isations décrits et representés, on a utilisé un contacteur selon l'invention du type dit "contact- travail" mais il est clair qu'il peut étre aussi du type dit "contact-repos". Le choix est fonction du mode de fonctionnement du circuit électrique auquel il est associe.Preferably, the return means are adjusted so that the sensitivity of the contactor is such that it reacts to a force of 0.4 daN. The sensitivity of this contactor can be modified by changing the shape of the return means. In the embodiments described and shown, a contactor according to the invention of the type called "contact-work" was used, but it is clear that it can also be of the type called "contact-rest". The choice depends on the operating mode of the electrical circuit with which it is associated.

Outre les avantages precèdemment indiques de facilite de montage et de réglage en atelier, avant la pose sur le véhicule, le contacteur selon l'invention augmente notablement la securite, car contrairement aux contacteurs de feux de "stop" existants actuellement, ou l'allumage des feux risque de n'intervenir qu'après le franchissement de la course correspondant au début du freinage, ce contacteur se ferme et donc declenche l'allumage des feux de "stop" avant que la course active, provoquant effectivement le fonctionnement du systeme de freinage, se produise.In addition to the previously indicated advantages of ease of assembly and adjustment in the workshop, before installation on the vehicle, the contactor according to the invention significantly increases safety, because unlike the "stop" light switches currently existing, or the ignition lights may occur only after crossing the stroke corresponding to the start of braking, this switch closes and therefore triggers the lighting of the "stop" lights before the race activates, effectively causing the system to operate. braking, happen.

L'invention a éte decrite a propos de modes de réalisations concernant une pedale de frein pour automobile mais il est clair que le contacteur pour pédale selon l'invention peut servir dans d'autres domaines.The invention has been described in connection with embodiments relating to a brake pedal for an automobile, but it is clear that the pedal contactor according to the invention can be used in other fields.

Claims (5)

1. Contacteur (20) pour pédale (10) munie d'une semelle rigide (12) recouverte d'une coiffe (13) destinée à recevoir un effort pour la mise en oeuvre de la pédale, comportant un premier plot de contact (231), solidaire d'un socle (21) fixé à la semelle (12) et un second plot de contact (232) mobile entre une position active où il repose contre le premier plot sous l'action de l'effort exercé sur la coiffe, et une position de repos où il est écarté du premier plot par des moyens de rappel (223) qui tendent à écarter du socle le support, caractérisé en ce que le second plot (232) est solidaire des moyens de rappel (223) et en ce que le socle (21) et le support (22) sont articulés l'un à l'autre à proximité d'un bord de la semelle et sont mobiles entre une position active où ils sont appliqués l'un contre l'autre par l'effort exercé sur la coiffe, et une position de repos où ils sont maintenus écartes par les moyens de rappel (223) et par une butée (222) entre le support et le socle.1. Contactor (20) for pedal (10) provided with a rigid sole (12) covered with a cap (13) intended to receive a force for the implementation of the pedal, comprising a first contact pad (231 ), secured to a base (21) fixed to the sole (12) and a second contact pad (232) movable between an active position where it rests against the first pad under the action of the force exerted on the cover , and a rest position where it is separated from the first stud by return means (223) which tend to move the support away from the base, characterized in that the second stud (232) is integral with the return means (223) and in that the base (21) and the support (22) are articulated to each other near an edge of the sole and are movable between an active position where they are applied one against the other by the force exerted on the cap, and a rest position where they are kept apart by the return means (223) and by a stop (222) between the support and the base. 2. Contacteur conforme a la revendication 1, caracterise en ce que le support de coiffe (22) coopere avec une partie des moyens de rappel suffisament éloignée des plots de contact pour que ces moyens se déforment sous l'effort de mise en oeuvre non seulement avant mais aussi apres la mise en contact des plots, jusqu'à ce que le support de coiffe repose sur le socle en position active.2. Contactor according to claim 1, characterized in that the cover support (22) cooperates with a part of the return means sufficiently distant from the contact pads so that these means are deformed under the effort of implementation not only before but also after contacting the studs, until the cap support rests on the base in the active position. 3. Contacteur conforme a la revendication 1 ou 2, caractérisé en ce que les moyens de rappel sont constitués par une lame élastique (223) dont une extrémité est fixée au socle et dont l'autre extrémité mobile porte sur une de ses faces le second plot de contact mobile (232) et coopere par son autre face avec une protubérance (224) du support de coiffe.3. Contactor according to claim 1 or 2, characterized in that the return means consist of an elastic blade (223) one end of which is fixed to the base and the other movable end of which carries the second on one of its faces mobile contact pad (232) and cooperates by its other face with a protrusion (224) of the cap support. 4. Contacteur conforme a l'une quelconque des revendications qui précédent, caractérisé en ce que les moyens de rappel sont constitués par une capsule (223) par exemple en matière plastique dont deux parois opposées portent chacune l'un des deux plots de contact.4. Contactor according to any one of the preceding claims, characterized in that the return means consist of a capsule (223) for example of plastic material, two opposite walls each carrying one of the two contact pads. 5. Application d'un contacteur pour pédale conforme a l'une quelconque des revendications qui précédent a la pédale de frein d'un véhicule.5. Application of a pedal switch according to any one of the preceding claims to the brake pedal of a vehicle.
EP19870401275 1986-06-12 1987-06-05 Contactor for control member operated by foot and its application in a brake pedal, in particular for cars Expired - Lifetime EP0252782B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8608483 1986-06-12
FR8608483A FR2600208B1 (en) 1986-06-12 1986-06-12 CONTACTOR FOR A FOOT-OPERATED CONTROL UNIT AND ITS APPLICATION TO A BRAKE PEDAL, ESPECIALLY A MOTOR VEHICLE

Publications (2)

Publication Number Publication Date
EP0252782A1 true EP0252782A1 (en) 1988-01-13
EP0252782B1 EP0252782B1 (en) 1991-08-21

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EP19870401275 Expired - Lifetime EP0252782B1 (en) 1986-06-12 1987-06-05 Contactor for control member operated by foot and its application in a brake pedal, in particular for cars

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EP (1) EP0252782B1 (en)
DE (1) DE3772285D1 (en)
FR (1) FR2600208B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057477A (en) * 1988-12-07 1991-10-15 Bromine Compounds Ltd. Cyanohydrination catalyst and process
WO2000048214A2 (en) * 1999-02-12 2000-08-17 Trw Automotive Electronics & Components Gmbh & Co. Kg Switch, especially an automobile stop light switch
EP1413482A1 (en) * 2002-10-25 2004-04-28 FIAT AUTO S.p.A. Device for signalling the operation of the brake or clutch of a vehicle
WO2007093835A1 (en) * 2006-02-17 2007-08-23 Drazen Rzounek Device for sound signalization in a vehicle with dual control pedals

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR625577A (en) * 1926-12-02 1927-08-13 Automatic control for slowing down and stopping a vehicle
FR32413E (en) * 1926-06-11 1927-11-29 Luminous signaling device for cars by front mobile lanterns, with repetition of the maneuver by rear lantern
GB732540A (en) * 1951-12-15 1955-06-29 Clive Leedam Improvements relating to the switching of an electric indicator lamp by a pedal operated braking system of a road vehicle
FR1139406A (en) * 1955-11-21 1957-07-01 Improvement in signaling of motor vehicles
GB2102923A (en) * 1981-07-29 1983-02-09 John Donald Leighton Pedal operated signal mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR32413E (en) * 1926-06-11 1927-11-29 Luminous signaling device for cars by front mobile lanterns, with repetition of the maneuver by rear lantern
FR625577A (en) * 1926-12-02 1927-08-13 Automatic control for slowing down and stopping a vehicle
GB732540A (en) * 1951-12-15 1955-06-29 Clive Leedam Improvements relating to the switching of an electric indicator lamp by a pedal operated braking system of a road vehicle
FR1139406A (en) * 1955-11-21 1957-07-01 Improvement in signaling of motor vehicles
GB2102923A (en) * 1981-07-29 1983-02-09 John Donald Leighton Pedal operated signal mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057477A (en) * 1988-12-07 1991-10-15 Bromine Compounds Ltd. Cyanohydrination catalyst and process
WO2000048214A2 (en) * 1999-02-12 2000-08-17 Trw Automotive Electronics & Components Gmbh & Co. Kg Switch, especially an automobile stop light switch
DE19906037A1 (en) * 1999-02-12 2000-08-31 Trw Automotive Electron & Comp Switches, in particular motor vehicle brake light switches
WO2000048214A3 (en) * 1999-02-12 2000-12-28 Trw Automotive Electron & Comp Switch, especially an automobile stop light switch
EP1413482A1 (en) * 2002-10-25 2004-04-28 FIAT AUTO S.p.A. Device for signalling the operation of the brake or clutch of a vehicle
WO2007093835A1 (en) * 2006-02-17 2007-08-23 Drazen Rzounek Device for sound signalization in a vehicle with dual control pedals

Also Published As

Publication number Publication date
FR2600208A1 (en) 1987-12-18
DE3772285D1 (en) 1991-09-26
EP0252782B1 (en) 1991-08-21
FR2600208B1 (en) 1992-07-03

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