EP0919903B1 - Assisting device for actuating a lever - Google Patents

Assisting device for actuating a lever Download PDF

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Publication number
EP0919903B1
EP0919903B1 EP19980402664 EP98402664A EP0919903B1 EP 0919903 B1 EP0919903 B1 EP 0919903B1 EP 19980402664 EP19980402664 EP 19980402664 EP 98402664 A EP98402664 A EP 98402664A EP 0919903 B1 EP0919903 B1 EP 0919903B1
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EP
European Patent Office
Prior art keywords
axis
lever
profile
pivoting
constituted
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.)
Expired - Lifetime
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EP19980402664
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German (de)
French (fr)
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EP0919903A1 (en
Inventor
Fabrice Goly
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Automobiles Peugeot SA
Automobiles Citroen SA
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Automobiles Peugeot SA
Automobiles Citroen SA
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Publication of EP0919903A1 publication Critical patent/EP0919903A1/en
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Publication of EP0919903B1 publication Critical patent/EP0919903B1/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/03—Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position; Providing feel, e.g. means for creating a counterforce
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • G05G1/44—Controlling members actuated by foot pivoting

Definitions

  • the present invention relates to an assistance device for actuating a pivoting lever on a fixed axis.
  • It relates, more particularly, to a device assistance for actuating a control lever at least one mechanical member of a motor vehicle, suitable to pivot on a fixed axis between a rest position and a active position so as to control, via in particular a cable, sliding in a sheath, one of which of the ends of the cable is connected to the lever and the other end being connected to the mechanical organ, the displacement of this latest.
  • Assistance devices are already known (see, for example, FR-A-379 873, corresponding to the preamble of the independent claim), in particular for clutch pedals, which consist of a tension spring, one of its ends connected to the pedal -or lever- and the other end is connected to a fixed point so that said spring exerts a force complementary to the maneuver or actuation effort of the the sink.
  • Such devices only improve a specific range of the force exerted by the user on the lever to control the movement of the mechanical organs. So that the assistance curve does not does not correspond to the control force curve of the mechanical organs.
  • the purpose of the present invention is to provide a assistance device for actuating a lever command that provides assistance on all points of the effort / displacement curve of the control lever, and which is simple to carry out.
  • the present invention as defined in claim 1 relates to a device assistance for actuating a lever pivoting around a fixed axis, under the action of a maneuvering force exerted by the user, between a rest position and a position active so as to transmit, notably through a cable, sliding in a sheath, one of the ends of the cable is connected to the lever and the other end is connected to at least one mechanical organ, an effort of control of said member, characterized in that the device is consisting of a profile integral with the lever and delimited by a angular sector centered on the axis which cooperates with a means of rolling able to move in a direction substantially perpendicular to the axis under the action of a means elastic when the lever is actuated, thus exerting a push on said lever to obtain an effort additional to the maneuvering effort.
  • Pedal 1 is connected to the clutch or to the braking via a cable 3 sliding in a sheath 4, one end of which is located towards pedal 1 is in support on a stop 5 fixed on the floor 6 of the vehicle automobile.
  • This cable 3 is conventionally connected to the upper part 1c of pedal 1, considering figure 1, by one of its ends, which is provided with a tip 3b in order to secure the latter to pedal 1, in particular by jamming the nozzle 3b between two side walls 1d of the pedal 1 separated by a longitudinal groove to allow the cable passage 3.
  • the fixed axis 2 is integral with two side walls 7 and 8 protruding from the floor 6 in the direction of the pedal 1 forming thus a yoke for the support of the latter.
  • the pedal 1 is provided with an assistance device, according to the present invention, for the actuation of this last.
  • This assistance device consists of a profile 10 integral with pedal 1 and delimited by an angular sector ⁇ centered on the axis 2 which cooperates with a rolling means 11 able to move in a direction X-X 'substantially perpendicular to the pivot axis 2 under the action -or stress- of an elastic means 12.
  • This profile 10 is produced by the edge of a cam 13, protruding from the pedal 1 on the floor side 6.
  • This cam 13, as visible in figure 1, has a profile 10 with spokes any with respect to the center of axis 2, in the direction of actuation of the pedal 1 in the active position 1b.
  • the rolling means 11 consists of a roller -or caster- 14 which is arranged in a yoke 15 consisting of two parallel branches 15a and 15b secured to a stud guide 16 and is fixed to the latter by means of an axis 17, parallel to the pivot axis 2, which passes right through and on the other, the roller 14 and the branches 15a, 15b of the yoke 15.
  • This axis 17 also crosses on both sides the side walls 7 and 8 of the pedal support clevis engaging a light -or oblong hole- 7a, 8a, as visible in FIG. 2, made longitudinally, respectively in each of said walls, so as to guide the rolling means 11 secured to the stud 16 along a direction substantially perpendicular to the pivot axis 2.
  • this axis 17 is held axially by via circlips 18, as visible in FIG. 2.
  • the guide pad 16 consists of a part cylindrical 16b projecting from a vertical face 16a from the side opposite pedal 1 on which one of the ends of the elastic means 12, the other end taking support on a face 19 of the floor which is parallel to the face 16a of stud 16.
  • This elastic means 12 consists of a spring with spirals which is compressed when mounting the guide pin 16, so that the rolling means 11 exerts a permanent contact with profile 10 -or slice-of the cam 13.
  • this elastic means 12 is guided axially on the one hand, by a cylindrical part 20 projecting from the face 19 of the floor 6 on the side of the pedal 1, and other part, by the cylindrical part 16b of the guide pad 16.
  • the profile 10 of the cam 13 will therefore be determined according to the additional effort or amount of assistance that we want to create so that it can have any shape.
  • This additional effort is determined by the inclination of the tangent to the profile of the cam 13 at the point of contact between the roller and the cam moving the roller 14.
  • the assistance device of the present invention can also be applied to a hand brake lever 21, as shown in Figure 3, pivoting on an axis 22 perpendicular to the longitudinal direction of the vehicle, between a rest position 21a and an active position 21b of way to transmit to braking devices, not shown, associated with the front or rear wheels of the vehicle, by means of a cable 23 sliding in a sheath 24, a clamping force when the lever 21 is in the active position 21b.
  • One of the ends 23a of the cable 23 is connected, in known manner, using lever 21.
  • the assistance device consists of a cam 13 secured to lever 21 which is delimited by a sector angular ce 'centered on the pivot axis 22.
  • This cam 13 is provided with a slice or profile 10 which cooperates in permanently with a rolling means 11 able to move in a direction Y-Y 'substantially perpendicular to the axis 22 under the action of an elastic means 12 during actuation of the lever 21.
  • This assistance device is housed in a recess 25 made in the floor 26, as visible in FIG. 3.
  • the rolling means 11 consists of a roller -or caster- 14 which is arranged in a yoke 15 consisting of two parallel branches 15a and 15b secured to a stud guide 16 and is fixed to the latter by means of an axis 17, parallel to the pivot axis 22, which passes right through and on the other, the roller 14 and the branches 15a, 15b of the yoke 15.
  • This axis 17 also crosses on both sides the side walls of the recess 25 by engaging in a light -or oblong hole- made in the direction Y-Y '.
  • the guide pad 16 consists of a part cylindrical 16b projecting from a vertical face 16a from the side opposite lever 21 on which one of the ends of the elastic means 12, the other end taking support on a face 28 of the floor 26 which is parallel to the face 16a of the pad 16.
  • This elastic means 12 consists of a spring with spirals which is compressed when mounting the guide pin 16, so that the rolling means 11 exerts a permanent contact with profile 10 -or slice-of the cam 13.
  • this elastic means is guided axially on the one hand, by a cylindrical part 29 projecting from the face 28 of the floor 26 on the side of the lever 21, and on the other hand, by the cylindrical part 16b of the guide pad 16.
  • the assistive device of the present invention is particularly simple to make and that it allows to have a assistance, i.e. an additional effort defined according to a desired objective curve over the entire pivoting stroke of the the sink.
  • such a device also allows a user to have less effort to provide when actuation of the lever.
  • this assistance device can be applied to all control levers, by cable, by rod, hydraulic or other, mechanical parts.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Rehabilitation Tools (AREA)

Description

La présente invention concerne un dispositif d'assistance pour l'actionnement d'un levier pivotant sur un axe fixe.The present invention relates to an assistance device for actuating a pivoting lever on a fixed axis.

Elle se rapporte, plus particulièrement, à un dispositif d'assistance pour l'actionnement d'un levier de commande d'au moins un organe mécanique de véhicule automobile, apte à pivoter sur un axe fixe entre une position de repos et une position active de manière à commander, par l'intermédiaire notamment d'un câble, coulissant dans une gaine, dont l'une des extrémités du câble est reliée au levier et l'autre extrémité étant reliée à l'organe mécanique, le déplacement de ce dernier.It relates, more particularly, to a device assistance for actuating a control lever at least one mechanical member of a motor vehicle, suitable to pivot on a fixed axis between a rest position and a active position so as to control, via in particular a cable, sliding in a sheath, one of which of the ends of the cable is connected to the lever and the other end being connected to the mechanical organ, the displacement of this latest.

On connaít déjà des dispositifs d'assistance (voir, par exemple, FR-A-379 873, correspondant au préambule de la revendication indépendante), notamment pour les pédales d'embrayages, qui sont constitués d'un ressort de traction dont l'une de ses extrémités est reliée à la pédale -ou levier- et l'autre extrémité est reliée à un point fixe de manière à ce que ledit ressort exerce un effort complémentaire à l'effort de manoeuvre ou d'actionnement du levier.Assistance devices are already known (see, for example, FR-A-379 873, corresponding to the preamble of the independent claim), in particular for clutch pedals, which consist of a tension spring, one of its ends connected to the pedal -or lever- and the other end is connected to a fixed point so that said spring exerts a force complementary to the maneuver or actuation effort of the the sink.

De tels dispositifs permettent uniquement d'améliorer une plage particulière de la courbe d'effort exercé par l'utilisateur sur le levier afin de commander le déplacement du ou des organes mécaniques. De sorte que la courbe d'assistance ne correspond pas à la courbe d'effort de commande du ou des organes mécaniques.Such devices only improve a specific range of the force exerted by the user on the lever to control the movement of the mechanical organs. So that the assistance curve does not does not correspond to the control force curve of the mechanical organs.

Le but de la présente invention est de proposer un dispositif d'assistance pour l'actionnement d'un levier de commande qui permet de procurer une assistance sur tous les points de la courbe effort/déplacement du levier de commande, et qui soit simple à réaliser.The purpose of the present invention is to provide a assistance device for actuating a lever command that provides assistance on all points of the effort / displacement curve of the control lever, and which is simple to carry out.

A cet effet, la présente invention telle que définie dans la revendication 1 a pour objet un dispositif d'assistance pour l'actionnement d'un levier pivotant autour d'un axe fixe, sous l'action d'un effort de manoeuvre exercé par l'utilisateur, entre une position de repos et une position active de manière à transmettre, par l'intermédiaire notamment d'un câble, coulissant dans une gaine, dont l'une des extrémités du câble est reliée au levier et l'autre extrémité est reliée à au moins un organe mécanique, un effort de commande dudit organe, caractérisé en ce que le dispositif est constitué d'un profil solidaire du levier et délimité par un secteur angulaire centré sur l'axe qui coopère avec un moyen de roulage apte à se déplacer suivant une direction sensiblement perpendiculaire à l'axe sous l'action d'un moyen élastique lors de l'actionnement du levier, exerçant ainsi une poussée sur ledit levier permettant d'obtenir un effort additionnel à l'effort de manoeuvre.To this end, the present invention as defined in claim 1 relates to a device assistance for actuating a lever pivoting around a fixed axis, under the action of a maneuvering force exerted by the user, between a rest position and a position active so as to transmit, notably through a cable, sliding in a sheath, one of the ends of the cable is connected to the lever and the other end is connected to at least one mechanical organ, an effort of control of said member, characterized in that the device is consisting of a profile integral with the lever and delimited by a angular sector centered on the axis which cooperates with a means of rolling able to move in a direction substantially perpendicular to the axis under the action of a means elastic when the lever is actuated, thus exerting a push on said lever to obtain an effort additional to the maneuvering effort.

Le dispositif d'assistance suivant l'invention peut également comporter une ou plusieurs des caractéristiques suivantes:

  • le profil est réalisé par la tranche d'une came,
  • la came possède un profil à rayons variables,
  • le moyen de roulage est constitué d'un galet qui est disposé dans une chape constituée de deux branches parallèles solidaire d'un plot de guidage et est fixé à ce dernier par l'intermédiaire d'un axe, parallèle à l'axe de pivotement qui traverse de part et d'autre le galet et les branches de la chape,
  • le moyen de roulage solidaire du plot de guidage est guidé suivant une direction sensiblement perpendiculaire à l'axe de pivotement par l'intermédiaire de l'axe qui s'engage dans des lumières réalisées longitudinalement dans des parois latérales parallèles aux branches de la chape,
  • le moyen élastique est constitué d'un ressort à spirales qui est comprimé permettant au moyen de roulage d'exercer un contact permanent avec le profil.
The assistance device according to the invention may also include one or more of the following characteristics:
  • the profile is produced by the edge of a cam,
  • the cam has a variable radius profile,
  • the rolling means consists of a roller which is arranged in a yoke consisting of two parallel branches integral with a guide stud and is fixed to the latter by means of an axis, parallel to the pivot axis which crosses on both sides the pebble and the branches of the yoke,
  • the rolling means secured to the guide stud is guided in a direction substantially perpendicular to the pivot axis via the axis which engages in slots made longitudinally in side walls parallel to the branches of the yoke,
  • the elastic means consists of a spiral spring which is compressed allowing the rolling means to exert permanent contact with the profile.

Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaítront plus clairement à la lecture de la description suivante d'un exemple de réalisation, en se référant au dessins annexés sur lesquels :

  • la figure 1 est une représentation schématique, en coupe longitudinale, d'une pédale d'embrayage ou de freins pourvue d'un dispositif d'assistance selon la présente invention,
  • la figure 1a est une représentation schématique de l'effort d'assistance réalisé par le dispositif de la présente invention,
  • la figure 2 est une vue en coupe, à plus grande échelle, suivant la ligne II-II de la figure 1, et
  • la figure 3 est une représentation schématique, en coupe longitudinale, d'un frein à main pourvu d'un dispositif d'assistance selon la présente l'invention.
The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, with reference to the accompanying drawings in which:
  • FIG. 1 is a schematic representation, in longitudinal section, of a clutch pedal or of brakes provided with an assistance device according to the present invention,
  • FIG. 1a is a schematic representation of the assistance effort made by the device of the present invention,
  • FIG. 2 is a sectional view, on a larger scale, along the line II-II of FIG. 1, and
  • Figure 3 is a schematic representation, in longitudinal section, of a hand brake provided with an assistance device according to the present invention.

On a représenté à la figure 1, une pédale d'embrayage ou de freins 1 apte à pivoter autour d'un axe fixe 2 entre une position de repos 1a et une position active 1b pour la commande d'un embrayage ou des organes de freinage, non représentés.There is shown in Figure 1, a clutch pedal or brake 1 able to pivot about a fixed axis 2 between a rest position 1a and an active position 1b for the control of a clutch or braking devices, not represented.

La pédale 1 est reliée à l'embrayage ou aux organes de freinage par l'intermédiaire d'un câble 3 coulissant dans une gaine 4 dont une extrémité située vers la pédale 1 est en appui sur une butée 5 fixée sur le plancher 6 du véhicule automobile.Pedal 1 is connected to the clutch or to the braking via a cable 3 sliding in a sheath 4, one end of which is located towards pedal 1 is in support on a stop 5 fixed on the floor 6 of the vehicle automobile.

Ce câble 3 est relié, classiquement, à la partie supérieure 1c de la pédale 1, en considérant la figure 1, par l'une de ses extrémités, qui est pourvue d'un embout 3b afin de solidariser ce dernier à la pédale 1, notamment par coincement de l'embout 3b entre deux parois latérales 1d de la pédale 1 séparées par une rainure longitudinale afin de permettre le passage du câble 3. This cable 3 is conventionally connected to the upper part 1c of pedal 1, considering figure 1, by one of its ends, which is provided with a tip 3b in order to secure the latter to pedal 1, in particular by jamming the nozzle 3b between two side walls 1d of the pedal 1 separated by a longitudinal groove to allow the cable passage 3.

L'axe fixe 2 est solidaire de deux parois latérales 7 et 8 qui saillent du plancher 6 en direction de la pédale 1 formant ainsi une chape pour le support de cette dernière.The fixed axis 2 is integral with two side walls 7 and 8 protruding from the floor 6 in the direction of the pedal 1 forming thus a yoke for the support of the latter.

La pédale 1 est pourvue d'un dispositif d'assistance, selon la présente invention, pour l'actionnement de cette dernière.The pedal 1 is provided with an assistance device, according to the present invention, for the actuation of this last.

Ce dispositif d'assistance est constitué d'un profil 10 solidaire de la pédale 1 et délimité par un secteur angulaire ∝ centré sur l'axe 2 qui coopère avec un moyen de roulage 11 apte à se déplacer suivant une direction X-X' sensiblement perpendiculaire à l'axe de pivotement 2 sous l'action -ou sollicitation- d'un moyen élastique 12.This assistance device consists of a profile 10 integral with pedal 1 and delimited by an angular sector ∝ centered on the axis 2 which cooperates with a rolling means 11 able to move in a direction X-X 'substantially perpendicular to the pivot axis 2 under the action -or stress- of an elastic means 12.

Ce profil 10 est réalisé par la tranche d'une came 13, saillant de la pédale 1 du côté du plancher 6. Cette came 13, comme visible à la figure 1, possède un profil 10 à rayons quelconques par rapport au centre de l'axe 2, dans le sens de l'actionnement en position active 1b de la pédale 1.This profile 10 is produced by the edge of a cam 13, protruding from the pedal 1 on the floor side 6. This cam 13, as visible in figure 1, has a profile 10 with spokes any with respect to the center of axis 2, in the direction of actuation of the pedal 1 in the active position 1b.

Le moyen de roulage 11 est constitué d'un galet -ou roulette- 14 qui est disposé dans une chape 15 constituée de deux branches parallèles 15a et 15b solidaire d'un plot de guidage 16 et est fixé à ce dernier par l'intermédiaire d'un axe 17, parallèle à l'axe de pivotement 2, qui traverse de part et d'autre le galet 14 et les branches 15a, 15b de la chape 15.The rolling means 11 consists of a roller -or caster- 14 which is arranged in a yoke 15 consisting of two parallel branches 15a and 15b secured to a stud guide 16 and is fixed to the latter by means of an axis 17, parallel to the pivot axis 2, which passes right through and on the other, the roller 14 and the branches 15a, 15b of the yoke 15.

Cet axe 17 traverse également de part et d'autre les parois latérales 7 et 8 de la chape support de pédale en s'engageant dans une lumière -ou trou oblong- 7a, 8a, comme visible à la figure 2, réalisée longitudinalement, respectivement dans chacune de cesdites parois, de manière à guider le moyen de roulage 11 solidaire du plot 16 suivant une direction sensiblement perpendiculaire à l'axe de pivotement 2.This axis 17 also crosses on both sides the side walls 7 and 8 of the pedal support clevis engaging a light -or oblong hole- 7a, 8a, as visible in FIG. 2, made longitudinally, respectively in each of said walls, so as to guide the rolling means 11 secured to the stud 16 along a direction substantially perpendicular to the pivot axis 2.

On notera que cet axe 17 est maintenu axialement par l'intermédiaire de circlips 18, comme visible sur la figure 2. It will be noted that this axis 17 is held axially by via circlips 18, as visible in FIG. 2.

Le plot de guidage 16 est constitué d'une partie cylindrique 16b saillant d'une face verticale 16a du côté opposé à la pédale 1 sur laquelle vient s'appuyer l'une des extrémités du moyen élastique 12, l'autre extrémité prenant appui sur une face 19 du plancher qui est parallèle à la face 16a du plot 16.The guide pad 16 consists of a part cylindrical 16b projecting from a vertical face 16a from the side opposite pedal 1 on which one of the ends of the elastic means 12, the other end taking support on a face 19 of the floor which is parallel to the face 16a of stud 16.

Ce moyen élastique 12 est constitué d'un ressort à spirales qui est comprimé lors du montage du plot de guidage 16, de manière à ce que le moyen de roulage 11 exerce un contact permanent avec le profil 10 -ou tranche- de la came 13.This elastic means 12 consists of a spring with spirals which is compressed when mounting the guide pin 16, so that the rolling means 11 exerts a permanent contact with profile 10 -or slice-of the cam 13.

On notera que ce moyen élastique 12 est guidé axialement d'une part, par une partie cylindrique 20 saillant de la face 19 du plancher 6 du côté de la pédale 1, et d'autre part, par la partie cylindrique 16b du plot de guidage 16.It will be noted that this elastic means 12 is guided axially on the one hand, by a cylindrical part 20 projecting from the face 19 of the floor 6 on the side of the pedal 1, and other part, by the cylindrical part 16b of the guide pad 16.

On comprend à la lecture de la description ci-dessus, que lors de l'actionnement par l'utilisateur de la pédale 1, suivant la flèche F, le moyen de roulage exerce une poussée sur le profil 10 de la came 13 créant ainsi un effort additionnel F' qui permet d'assister l'effort de manoeuvre de l'utilisateur tout au long de l'actionnement de la pédale 1.It is understood from reading the description above, that upon actuation by the user of pedal 1, according to arrow F, the rolling means pushes on the profile 10 of the cam 13 thus creating an additional force F 'which helps to assist the user's maneuvering effort while along pressing the pedal 1.

Le profil 10 de la came 13 sera donc déterminé suivant l'effort additionnel ou quantité d'assistance que l'on veut créer de sorte que celui-ci peut avoir une forme quelconque. Cet effort additionnel est déterminé par l'inclinaison de la tangente au profil de la came 13 au point de contact galet/came de déplacement du galet 14.The profile 10 of the cam 13 will therefore be determined according to the additional effort or amount of assistance that we want to create so that it can have any shape. This additional effort is determined by the inclination of the tangent to the profile of the cam 13 at the point of contact between the roller and the cam moving the roller 14.

On notera que l'effort F' se décompose en deux efforts d'une part un effort moteur d'assistance F1 qui est perpendiculaire à la tangente au profil de la came et d'autre part un effort F2 de l'axe du galet dans les lumières qui est dans un plan perpendiculaire à l'effort F', comme visible à la figure 1a. Note that the effort F 'breaks down into two efforts on the one hand an F1 assist motor effort which is perpendicular to the tangent to the profile of the cam and other share an effort F2 of the axis of the roller in the lights which is in a plane perpendicular to the force F ', as visible at the Figure 1a.

Le dispositif d'assistance de la présente invention, peut également être appliqué à un levier 21 de frein à main, comme représenté à la figure 3, pivotant sur un axe 22 perpendiculaire à la direction longitudinale du véhicule, entre une position de repos 21a et une position active 21b de manière à transmettre à des organes de freinage, non représentés, associés aux roues avant ou arrière du véhicule, par l'intermédiaire d'un câble 23 coulissant dans une gaine 24, un effort de serrage quand le levier 21 est en position active 21b. L'une des extrémités 23a du câble 23 est reliée, de manière connue, au levier 21.The assistance device of the present invention can also be applied to a hand brake lever 21, as shown in Figure 3, pivoting on an axis 22 perpendicular to the longitudinal direction of the vehicle, between a rest position 21a and an active position 21b of way to transmit to braking devices, not shown, associated with the front or rear wheels of the vehicle, by means of a cable 23 sliding in a sheath 24, a clamping force when the lever 21 is in the active position 21b. One of the ends 23a of the cable 23 is connected, in known manner, using lever 21.

Dans un souci de simplification de la description, les éléments identiques au dispositif d'assistance décrit ci-dessus comportent les mêmes références.In order to simplify the description, the elements identical to the assistance device described above have the same references.

Le dispositif d'assistance est constitué d'une came 13 solidaire du levier 21 qui est délimitée par un secteur angulaire ce' centré sur l'axe de pivotement 22. Cette came 13 est pourvue d'une tranche ou profil 10 qui coopère en permanence avec un moyen de roulage 11 apte à se déplacer suivant une direction Y-Y' sensiblement perpendiculaire à l'axe 22 sous l'action d'un moyen élastique 12 lors de l'actionnement du levier 21.The assistance device consists of a cam 13 secured to lever 21 which is delimited by a sector angular ce 'centered on the pivot axis 22. This cam 13 is provided with a slice or profile 10 which cooperates in permanently with a rolling means 11 able to move in a direction Y-Y 'substantially perpendicular to the axis 22 under the action of an elastic means 12 during actuation of the lever 21.

Ce dispositif d'assistance est logé dans un évidement 25 réalisé dans le plancher 26, comme visible sur la figure 3.This assistance device is housed in a recess 25 made in the floor 26, as visible in FIG. 3.

Le moyen de roulage 11 est constitué d'un galet -ou roulette- 14 qui est disposé dans une chape 15 constituée de deux branches parallèles 15a et 15b solidaire d'un plot de guidage 16 et est fixé à ce dernier par l'intermédiaire d'un axe 17, parallèle à l'axe de pivotement 22, qui traverse de part et d'autre le galet 14 et les branches 15a, 15b de la chape 15.The rolling means 11 consists of a roller -or caster- 14 which is arranged in a yoke 15 consisting of two parallel branches 15a and 15b secured to a stud guide 16 and is fixed to the latter by means of an axis 17, parallel to the pivot axis 22, which passes right through and on the other, the roller 14 and the branches 15a, 15b of the yoke 15.

Cet axe 17 traverse également de part et d'autre les parois latérales de l'évidement 25 en s'engageant dans une lumière -ou trou oblong- 27 réalisée suivant la direction Y-Y'. This axis 17 also crosses on both sides the side walls of the recess 25 by engaging in a light -or oblong hole- made in the direction Y-Y '.

Le plot de guidage 16 est constitué d'une partie cylindrique 16b saillant d'une face verticale 16a du côté opposé au levier 21 sur laquelle vient s'appuyer l'une des extrémités du moyen élastique 12, l'autre extrémité prenant appui sur une face 28 du plancher 26 qui est parallèle à la face 16a du plot 16.The guide pad 16 consists of a part cylindrical 16b projecting from a vertical face 16a from the side opposite lever 21 on which one of the ends of the elastic means 12, the other end taking support on a face 28 of the floor 26 which is parallel to the face 16a of the pad 16.

Ce moyen élastique 12 est constitué d'un ressort à spirales qui est comprimé lors du montage du plot de guidage 16, de manière à ce que le moyen de roulage 11 exerce un contact permanent avec le profil 10 -ou tranche- de la came 13.This elastic means 12 consists of a spring with spirals which is compressed when mounting the guide pin 16, so that the rolling means 11 exerts a permanent contact with profile 10 -or slice-of the cam 13.

On notera que ce moyen élastique est guidé axialement d'une part, par une partie cylindrique 29 saillant de la face 28 du plancher 26 du côté du levier 21, et d'autre part, par la partie cylindrique 16b du plot de guidage 16.It will be noted that this elastic means is guided axially on the one hand, by a cylindrical part 29 projecting from the face 28 of the floor 26 on the side of the lever 21, and on the other hand, by the cylindrical part 16b of the guide pad 16.

On comprend à la lecture de la description ci-dessus que le dispositif d'assistance de la présente invention est particulièrement simple à réaliser et qu'il permet d'avoir une assistance, c'est-à-dire un effort additionnel défini selon une courbe objectif désirée sur toute la course de pivotement du levier.It is understood from reading the description above that the assistive device of the present invention is particularly simple to make and that it allows to have a assistance, i.e. an additional effort defined according to a desired objective curve over the entire pivoting stroke of the the sink.

Avantageusement, un tel dispositif permet également à un utilisateur d'avoir moins d'effort à fournir lors de l'actionnement du levier.Advantageously, such a device also allows a user to have less effort to provide when actuation of the lever.

Bien entendu, ce dispositif d'assistance peut s'appliquer à tous les leviers de commande, par câble, par biellette, hydraulique ou autres, des organes mécaniques.Of course, this assistance device can be applied to all control levers, by cable, by rod, hydraulic or other, mechanical parts.

Claims (8)

  1. Assistance device for the actuation of a lever (1; 21) pivoting about a fixed axis, known as an axis of pivoting (2; 22), under the action of a manoeuvring force exerted by the user, between a rest position (1a; 21a) and an active position (1b; 21b) so as to transmit, by an intermediary means (3; 23), in particular a cable (3; 23) sliding within a sheath (4; 24), in which one of the ends of the cable (3a; 23a) is connected to the lever (1; 21) and the other end is connected to at least one mechanical body, a force to control said body, characterised in that the device is constituted by a profile (10) integral with the lever (1; 21) and delimited by an angular sector (∝; ∝') centred on the axis (2; 22), which co-operates with a rolling means (11) capable of being displaced in a direction (X-X'; Y-Y') substantially perpendicular to the axis (2; 22) under the action of an elastic means (12), when the lever is actuated, thus exerting a thrust on said lever making it possible to obtain a force (F') additional to the manoeuvring force (F) over the entire pivoting movement of the lever (1; 21).
  2. Device according to Claim 1, characterised in that the profile (10) is produced by the section of a cam (13).
  3. Device according to Claim 2, characterised in that the cam (13) has a profile (10) with variable radii.
  4. Device according to one of Claims 1 to 3, characterised in that the rolling means (11) is constituted by a roller (14) that is arranged in a fork joint (15) constituted by two parallel branches (15a and 15b) integral with a guide stud (16) and is fixed to the latter by the intermediary of an axis (17), parallel to the axis of pivoting (2; 22), that passes right through the roller (14) and the branches (15a and 15b) of the fork joint (15).
  5. Device according to Claim 4, characterised in that the rolling means (11) integral with the guide stud (16) is guided in a direction substantially perpendicular to the axis of pivoting (2; 22) via the axis (17), which is engaged in slots (7a, 8a; 27) made longitudinally in side walls parallel to the branches (15, 15b) of the fork joint (15).
  6. Device according to one of the preceding claims, characterised in that the elastic means (12) is constituted by a spiral spring that is compressed allowing the rolling means (11) to exert a permanent contact with the profile (10).
  7. Hand brake for a motor vehicle, characterised in that it comprises an assistance device in accordance with Claims 1 to 4.
  8. Control pedal for a clutch or for braking bodies characterised in that it comprises an assistance device in accordance with Claims 1 to 6.
EP19980402664 1997-11-27 1998-10-27 Assisting device for actuating a lever Expired - Lifetime EP0919903B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9714931A FR2771523B1 (en) 1997-11-27 1997-11-27 ASSISTANCE DEVICE FOR ACTUATING A PIVOTING LEVER ON A FIXED AXIS
FR9714931 1997-11-27

Publications (2)

Publication Number Publication Date
EP0919903A1 EP0919903A1 (en) 1999-06-02
EP0919903B1 true EP0919903B1 (en) 2003-09-24

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Application Number Title Priority Date Filing Date
EP19980402664 Expired - Lifetime EP0919903B1 (en) 1997-11-27 1998-10-27 Assisting device for actuating a lever

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EP (1) EP0919903B1 (en)
DE (1) DE69818400T2 (en)
ES (1) ES2205415T3 (en)
FR (1) FR2771523B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4313219B2 (en) 2004-02-09 2009-08-12 豊田鉄工株式会社 Pedal reaction force device
CA2507660C (en) * 2004-05-14 2013-05-21 Intier Automotive Closures Inc. Pedal assembly
ATE523833T1 (en) * 2005-04-28 2011-09-15 Schaeffler Technologies Gmbh ARRANGEMENT FOR ACTUATING A CLUTCH OF A VEHICLE
US20110041647A1 (en) * 2009-08-18 2011-02-24 Jarek Soltys Brake pedal assembly having non-contacting sensor
FR2967270A1 (en) * 2010-11-08 2012-05-11 Peugeot Citroen Automobiles Sa Device for actuating lever i.e. clutch pedal, pivoting between initial position and active positions in motor vehicle, has cam attached to lever, and roller forming part of support and moving along profile of cam to exert force on cam
FR2967224A1 (en) * 2010-11-08 2012-05-11 Peugeot Citroen Automobiles Sa Pedal for controlling clutch of car, has assistance mechanism comprising rod supporting pressure roller, where rod receives compressive force within spring, and applies force to pressure roller resting against cam
ES2415004B1 (en) * 2012-01-18 2014-09-02 Batz, S.Coop. Assistance device for actuating a pedal of a motor vehicle and pedal comprising the assistance device
DE102012005777A1 (en) * 2012-03-21 2013-09-26 Gm Global Technology Operations, Llc Pedal device for actuating clutch of motor vehicle, has an adjusting device for splitting the spring force into different force components whose ratio is variable with respect to each other in dependence on operation stroke of pedal
CN104613100A (en) * 2015-01-18 2015-05-13 王楠 Clutch manipulation damping mechanism and clutch inhaul cable assembly adopting same
KR102644374B1 (en) * 2019-02-12 2024-03-07 현대자동차주식회사 Clutch Pedal Reduction Structure Using Detent

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR379873A (en) * 1907-07-12 1907-11-21 Amedee Bollee Fils Progressive control system of friction clutches also applicable to brake control
US2112607A (en) * 1935-09-12 1938-03-29 Frederick W Pooley Lever mechanism
DE3810591A1 (en) * 1988-03-29 1989-10-12 Audi Ag Device for the actuation of a control element of a vehicle internal combustion engine

Also Published As

Publication number Publication date
ES2205415T3 (en) 2004-05-01
DE69818400T2 (en) 2004-06-24
DE69818400D1 (en) 2003-10-30
FR2771523A1 (en) 1999-05-28
FR2771523B1 (en) 1999-12-31
EP0919903A1 (en) 1999-06-02

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