EP1883881B1 - Pedal arrangement for motor vehicle and associated motor vehicle - Google Patents

Pedal arrangement for motor vehicle and associated motor vehicle Download PDF

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Publication number
EP1883881B1
EP1883881B1 EP06794418A EP06794418A EP1883881B1 EP 1883881 B1 EP1883881 B1 EP 1883881B1 EP 06794418 A EP06794418 A EP 06794418A EP 06794418 A EP06794418 A EP 06794418A EP 1883881 B1 EP1883881 B1 EP 1883881B1
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EP
European Patent Office
Prior art keywords
pedal
assistance
support
correction
arrangement
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.)
Not-in-force
Application number
EP06794418A
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German (de)
French (fr)
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EP1883881A2 (en
Inventor
Cédric DAUTRY
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1883881A2 publication Critical patent/EP1883881A2/en
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Publication of EP1883881B1 publication Critical patent/EP1883881B1/en
Not-in-force legal-status Critical Current
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    • 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
    • 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

Definitions

  • FR-A-2,458,433 a clutch pedal arrangement of the aforementioned type, which comprises a pedal assisting spring.
  • This spring is mounted in support between a sleeve articulated on the pedal, and a piston rod sliding in the sleeve and articulated on the support.
  • the assistance spring exerts a restoring force on the pedal to ensure its maintenance in its rest position.
  • the assistance spring exerts a force on this pedal to facilitate disengagement.
  • the arrangement further includes an auxiliary assist correction spring for reducing the assist force of the assisting spring.
  • This spring is mounted in the sleeve, opposite the piston rod relative to the assistance spring.
  • this auxiliary spring exerts, at the end of travel of the pedal, a force directed towards the rest position.
  • An object of the invention is to provide a control pedal arrangement of a motor vehicle, provided with means for assisting the actuation of the pedal which apply to the pedal an easily controllable force along its stroke according to claim 1 .
  • the invention also relates to a motor vehicle, characterized in that it comprises an arrangement as defined above.
  • orientations are the usual orientations of a motor vehicle.
  • the terms “higher”, “lower”, “Forward”, “rear”, “left” and “right” mean the normal direction of traffic of a motor vehicle and the position of a driver.
  • the Figure 1 represents a first clutch pedal arrangement 11, connected to a clutch 13 by a control rod 15.
  • the arrangement 11 comprises a pedal support 17, a clutch pedal 19, pivotally mounted on the support 17 around a transverse axis A-A ', means 21 for assisting the actuation of the pedal 19, and additional pedal assistance correction means 23 which oppose the assistance means 21.
  • the pedal support 17 comprises a base 25 substantially vertical on the Figure 1 , a clevis 27 of pedal articulation secured to the base 25, and a pivot pin 29 connecting the clevis 27 to the pedal 19.
  • the yoke 27 comprises two vertical plates 31A, 31B facing one another and interconnected by a rear stop 33 and a front stop 35.
  • the right plate 31A comprises a lower rear tongue 37 of articulation to the assistance means 21 which extends the lower edge of the plate 31A rearwards, on the left in the drawing.
  • the left plate 31 B comprises a lower front tongue 39 which extends the plate downwards from a lower edge of this plate 31A.
  • the lower end of the tongue 37 is located substantially in the same vertical plane as the lower end of the tongue 39, behind this tongue 39.
  • the pivot 29 is mounted transversely between the upper rear corners of the plates 31A, 31B.
  • the pedal 19 comprises, near its upper end 41, a lever arm 43 and at its lower end 44, a terminal actuating pad 45.
  • the pedal 19 is rotatably mounted about the axis A-A 'on the pivot 29 between a rest position bearing against the rear stop 33 and an active disengaging position bearing on the front stop 35.
  • the lever arm 43 is articulated to the control rod 15, so that the control rod 15 forms, with the clutch 13, biasing means permanent pedal 19 to its rest position.
  • the rod 15 passes through the base 25 through an opening.
  • the assistance means 21 comprise a sleeve 47, a piston 49 slidably mounted in the sleeve 47 and an assistance spring 51 interposed between the sleeve 47 and the piston 49.
  • the sleeve 47 is articulated on the pedal 19 at a first point 53. It comprises a low annular seat 54 for receiving the spring 51.
  • the piston 49 is articulated at a second point 55 located at the lower end of the rear tongue 37. It comprises a high annular seat 59 located opposite the low seat 54.
  • the assist spring 51 is compression mounted between the up and down annular seats 59 and 54.
  • the assistance spring 51 exerts a restoring force on the pedal 19 which requests the pedal 19 to its rest position.
  • the assistance spring 51 exerts an assisting force which urges the pedal 19 towards the active disengaging position.
  • An intermediate position of the pedal 19 is defined when the first point 53 is located on the axis B-B '.
  • the additional assistance correction means 23 comprise a helical spring 61, a spring guide 63 articulated on a third point 64 of the support located at the lower end of the lower front tongue 39, and means 65 for soliciting the articulated spring. on the pedal 19 in a fourth point 66 located below the first point 53.
  • the guide 63 comprises an upper clevis 69 of articulation to the lower tongue 39, a guide sleeve 71 fixed in the yoke 69, and a sleeve 73 slidably mounted on the sleeve 71.
  • the upper yoke 69 defines, moving from the third point 64 to the fourth point 66, an annular shoulder 75 facing the pedal 19 and a stop 77 of movement of the sleeve 73 also facing the pedal 19.
  • the sleeve 71 delimits, internally, a guide channel 79 of axis C-C 'parallel to the axis connecting the points 64 and 66. It delimits externally an annular locking stop 81 of the sleeve 73 located under the abutment 77.
  • the sheath 73 comprises, at its upper left end on the Figure 2 , an inner bead 83 resting on the sleeve 71 and, at its lower free end on the right on the Figure 2 , a lower flange 85 which protrudes radially outwards facing the shoulder 75.
  • the sheath 73 is slidably movable on the sleeve 71 between an upper position in which the bead 83 bears against the upper stop 77 and a lower position in which the bead 83 is blocked by the lower stop 81.
  • the return spring 61 is mounted to compression between the lower flange 85 and the shoulder 75. It biases the sleeve 73 to its lower position.
  • the means 65 for biasing the spring comprise a lower clevis 87 and a guide rod 91 of axis C-C 'slidably mounted in the channel 79 of the sleeve 71.
  • the lower yoke 87 is thus movable between a rest position located away from the collar 85 and a biasing position of the spring 61 in which the lower yoke 87 abuts against the flange 85.
  • the assistance means 21 and the additional assistance correction means 23 form two sides facing a hinge quadrilateral 95 connecting the pedal 19 to the support 17 and delimited by the first, second, third and fourth articulation 53, 55, 64, 66.
  • the articulation quadrilateral 95 is substantially in the vertical plane of rotation of the pedal 19 around the axis A-A '.
  • the pedal 19 bears against the rear stop 33. Furthermore, the first pivot point 53 is located behind the axis B-B ', so that the assistance spring 51 exerts a biasing force complementary to the pedal 19 towards the rest position as shown by the curve 101 on the Figure 3 .
  • the assistance correction spring 61 pushes the sheath 73 downwards and keeps the bead 83 in abutment against the stop 81.
  • the lower yoke 87 is disposed away from the flange 85, so that the spring 61 exerts no force on the pedal 19 (curve 103 on the Figure 3 ).
  • the assistance spring 51 exerts a decreasing force for biasing the pedal 19 towards the rest position.
  • the first pivot point 53 passes in front of the axis B-B '.
  • the spring 51 then exerts on the pedal 19 a force comprising a component directed towards the front. This force opposes the return force exerted by the rod 15 on the lever arm 43 and assists the driver to move the pedal to the active declutching position.
  • the CC axis assist correction force generated by the additional assist correction means 23 opposes the DD axis assist force passing through the first point 53 and the second generated point 55. by means of assistance 21.
  • the additional assistance correction means 23 and the assistance means 21 thus exert, from the assistance correction position, distinct axis and direction forces on the pedal 19.
  • This adjustment is made in particular by changing the length of the sleeve 71 and the sleeve 73.
  • the intensity of the additional assistance correction force can be adjusted by changing the characteristics. of the assistance correction spring 61, independently of the characteristics of the assistance spring 51.
  • the arrangement thus makes it possible, by simple and inexpensive means, to have an arrangement 11 provided with clutch assistance means of intensity that is easily adjustable along the travel of the clutch pedal.
  • the assistance correction spring 61 creates a restoring force of the pedal 19 to the rest position which, associated with the assistance effort, has a substantially constant intensity, which allows a good dosage of the movement of the pedal 19 to the rest position and a clean lift of the clutch pedal.
  • the additional assistance correction means 23 have the same structure as the assistance means 21.
  • the assistance correction spring 61 is a spring having a first lower region 121 of substantially zero stiffness and a second upper region 123 of non-zero stiffness.
  • substantially zero stiffness means a stiffness at least 10 times less than the stiffness of the assistance spring 51 and capable of generating an elastic force intensity at least 10 times less than the maximum force generated by the rod 15 of controlling the clutch 13 on the pedal 19.
  • the two ends of the spring 61 rest on yokes hinged respectively on the third hinge point 64 and on the fourth hinge point 66.
  • the turns of region 121 are fully compressed. Beyond this position, the region 123 of non-zero stiffness is biased so that it creates a rearward non-zero assist correction force against the assist force generated by the assistance spring 51.

Abstract

The control pedal assembly (11), comprising a support (17) with a pedal (19) pivoting about an axis (A-A') between rest and operating positions, has assistance (21) and correction (23) units that act in parallel as the pedal is moved between an intermediate and an operating position, applying forces along two distinct axes (C-C'; D-D') that form the sides of an articulated quadrilateral lying within the pedal's plane of rotation.

Description

La présente invention concerne un agencement de pédale de commande de véhicule automobile du type comprenant :

  • un support de pédale ;
  • une pédale d'actionnement montée pivotante sur le support autour d'un axe de pivotement entre une position de repos et une position d'activation, la pédale comprenant des moyens de liaison à des moyens de rappel permanent de la pédale vers sa position de repos ;
  • des moyens d'assistance à l'actionnement de la pédale, articulés sur la pédale et sur le support, les moyens d'assistance sollicitant la pédale vers la position d'activation au moins à partir d'une position intermédiaire de la pédale ; et
  • des moyens additionnels de correction d'assistance à la pédale, actifs à partir d'une position de correction de l'assistance située entre la position intermédiaire et la position d'activation.
The present invention relates to a motor vehicle control pedal arrangement of the type comprising:
  • a pedal support;
  • an operating pedal pivotally mounted on the support about a pivot axis between a rest position and an activation position, the pedal comprising means for connecting means for permanently returning the pedal to its rest position ;
  • means for assisting the actuation of the pedal, articulated on the pedal and on the support, the assisting means biasing the pedal to the activation position at least from an intermediate position of the pedal; and
  • additional pedal assist correction means active from an assist correction position between the intermediate position and the activation position.

On connaît de FR-A-2 458 433 un agencement de pédale d'embrayage du type précité, qui comprend un ressort d'assistance à l'actionnement de la pédale. Ce ressort est monté en appui entre un manchon articulé sur la pédale, et une tige de piston coulissant dans le manchon et articulée sur le support.We know FR-A-2,458,433 a clutch pedal arrangement of the aforementioned type, which comprises a pedal assisting spring. This spring is mounted in support between a sleeve articulated on the pedal, and a piston rod sliding in the sleeve and articulated on the support.

Entre la position de repos et une position intermédiaire de la pédale autour de son axe, le ressort d'assistance exerce une force de rappel sur cette pédale pour assurer son maintien dans sa position de repos.Between the rest position and an intermediate position of the pedal about its axis, the assistance spring exerts a restoring force on the pedal to ensure its maintenance in its rest position.

Au-delà d'une position intermédiaire de la pédale autour de son axe, le ressort d'assistance exerce une force sur cette pédale pour faciliter le débrayage.Beyond an intermediate position of the pedal about its axis, the assistance spring exerts a force on this pedal to facilitate disengagement.

L'agencement comprend en outre un ressort auxiliaire de correction de l'assistance permettant de réduire la force d'assistance du ressort d'assistance. Ce ressort est monté dans le manchon, à l'opposé de la tige de piston par rapport au ressort d'assistance. Lorsque l'embrayage est débrayé, ce ressort auxiliaire exerce, en fin de course de la pédale, une force dirigée vers la position de repos. Ainsi, après le débrayage, la force exercée sur le pied du conducteur reste suffisamment élevée pour éviter que le conducteur ne ressente un « vide » dans l'actionnement de la pédale.The arrangement further includes an auxiliary assist correction spring for reducing the assist force of the assisting spring. This spring is mounted in the sleeve, opposite the piston rod relative to the assistance spring. When the clutch is disengaged, this auxiliary spring exerts, at the end of travel of the pedal, a force directed towards the rest position. Thus, after the clutch, the force exerted on the driver's foot remains high enough to prevent the driver feels a "vacuum" in the actuation of the pedal.

Un tel agencement ne donne pas entière satisfaction. En effet, le ressort d'assistance et le ressort auxiliaire agissent à la suite l'un de l'autre, et la force résultante exercée sur la pédale par ces ressorts est difficile à contrôler le long de la course de la pédale. Le document DE 10 258 938 montre un agencement de pédale de commande selon le preambule de la revendication 1.Such an arrangement does not give complete satisfaction. Indeed, the assistance spring and the auxiliary spring act in succession from one another, and the resulting force exerted on the pedal by these springs is difficult to control along the pedal stroke. The document DE 10 258 938 shows a pedal arrangement according to the preamble of claim 1.

Un but de l'invention est de fournir un agencement de pédale de commande de véhicule automobile, muni de moyens d'assistance à l'actionnement de la pédale qui appliquent sur la pédale une force facilement contrôlable le long de sa course selon la revendication 1.An object of the invention is to provide a control pedal arrangement of a motor vehicle, provided with means for assisting the actuation of the pedal which apply to the pedal an easily controllable force along its stroke according to claim 1 .

L'agencement selon l'invention peut comprendre l'une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou suivant toutes combinaisons techniquement possibles.

  • le quadrilatère d'articulation est sensiblement compris dans le plan de rotation de la pédale autour de son axe de pivotement ;
  • les moyens d'assistance sollicitent la pédale vers la position de repos lorsque la pédale se trouve entre la position de repos et la position intermédiaire ;
  • l'organe de sollicitation élastique est porté par l'un du support et de la pédale, les moyens additionnels de correction d'assistance comprenant une butée portée par l'autre du support et de la pédale, et la butée est située à l'écart d'une extrémité libre de l'organe de sollicitation élastique lorsque la pédale se trouve entre la position de repos et la position de correction de l'assistance, la butée s'appuyant sur l'extrémité libre lorsque la pédale se trouve au-delà de la position de correction de l'assistance ;
  • les moyens additionnels de correction d'assistance comprennent un manchon de support de l'organe de sollicitation articulé sur l'un du support et de la pédale, et une tige de guidage articulée sur l'autre du support et de la pédale, la tige de guidage étant montée coulissante dans le manchon ; et
  • les moyens de liaison sont destinés à être raccordés à un embrayage de véhicule automobile.
The arrangement according to the invention may comprise one or more of the following characteristics, taken separately or in any technically possible combination.
  • the hinge quadrilateral is substantially included in the plane of rotation of the pedal about its pivot axis;
  • the assistance means urge the pedal to the rest position when the pedal is between the rest position and the intermediate position;
  • the elastic biasing member is carried by one of the support and the pedal, the additional assistance correction means comprising an abutment carried by the other of the support and the pedal, and the stop is located at the gap a free end of the elastic biasing member when the pedal is between the rest position and the assistance correction position, the stop resting on the free end when the pedal is beyond the correction position of the audience;
  • the additional assistance correction means comprise a support sleeve of the biasing member articulated on one of the support and the pedal, and a guide rod hinged to the other of the support and the pedal, the rod guide being slidably mounted in the sleeve; and
  • the connecting means are intended to be connected to a motor vehicle clutch.

L'invention a également pour objet un véhicule automobile, caractérisé en ce qu'il comprend un agencement tel que défini ci-dessus.The invention also relates to a motor vehicle, characterized in that it comprises an arrangement as defined above.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés sur lesquels :

  • la Figure 1 est une vue en perspective de côté d'un agencement de pédale d'embrayage ;
  • la Figure 2 est une vue en coupe suivant le plan incliné II-II de la Figure 1 des moyens additionnels de correction d'assistance de l'agencement de pédale de la Figure 1 ;
  • la Figure 3 est un graphe représentant la force générée par les moyens d'assistance et par les moyens additionnels de correction d'assistance de l'agencement de la Figure 1, le long de la course de la pédale ;
  • la Figure 4 est vue partielle en perspective des moyens de correction d'assistance additionnels d'une variante de l'agencement de la Figure 1 selon l'invention.
The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which:
  • the Figure 1 is a side perspective view of a clutch pedal arrangement;
  • the Figure 2 is a sectional view along the inclined plane II-II of Figure 1 additional means of assistance correction of the pedal arrangement of the Figure 1 ;
  • the Figure 3 is a graph representing the force generated by the assistance means and by the additional assistance correction means of the arrangement of the Figure 1 along the pedal stroke;
  • the Figure 4 is partial perspective view of the additional assistance correction means of a variant of the arrangement of the Figure 1 according to the invention.

Dans tout ce qui suit, les orientations choisies sont les orientations habituelles d'un véhicule automobile. Ainsi, les termes « supérieur », « inférieur », « avant », « arrière », « gauche », « droite » s'entendent par rapport au sens de circulation normal d'un véhicule automobile, et à la position d'un conducteur.In all that follows, the chosen orientations are the usual orientations of a motor vehicle. Thus, the terms "higher", "lower", "Forward", "rear", "left" and "right" mean the normal direction of traffic of a motor vehicle and the position of a driver.

La Figure 1 représente un premier agencement 11 de pédale d'embrayage, relié à un embrayage 13 par une tige de commande 15. L'agencement 11 comprend un support de pédale 17, une pédale d'embrayage 19, montée pivotante sur le support 17 autour d'un axe transversal A-A', des moyens 21 d'assistance à l'actionnement de la pédale 19, et des moyens additionnels 23 de correction d'assistance à la pédale 19 qui s'opposent aux moyens d'assistance 21.The Figure 1 represents a first clutch pedal arrangement 11, connected to a clutch 13 by a control rod 15. The arrangement 11 comprises a pedal support 17, a clutch pedal 19, pivotally mounted on the support 17 around a transverse axis A-A ', means 21 for assisting the actuation of the pedal 19, and additional pedal assistance correction means 23 which oppose the assistance means 21.

Le support de pédale 17 comprend un socle 25 sensiblement vertical sur la Figure 1, une chape 27 d'articulation de pédale solidaire du socle 25, et un pivot d'articulation 29 reliant la chape 27 à la pédale 19.The pedal support 17 comprises a base 25 substantially vertical on the Figure 1 , a clevis 27 of pedal articulation secured to the base 25, and a pivot pin 29 connecting the clevis 27 to the pedal 19.

La chape 27 comprend deux plaques verticales 31A, 31B situées en regard l'une de l'autre et reliées entre elles par une butée arrière 33 et une butée avant 35.The yoke 27 comprises two vertical plates 31A, 31B facing one another and interconnected by a rear stop 33 and a front stop 35.

La plaque droite 31A comprend une languette inférieure arrière 37 d'articulation aux moyens d'assistance 21 qui prolonge le bord inférieur de la plaque 31A vers l'arrière, à gauche sur le dessin.The right plate 31A comprises a lower rear tongue 37 of articulation to the assistance means 21 which extends the lower edge of the plate 31A rearwards, on the left in the drawing.

La plaque gauche 31 B comprend une languette inférieure avant 39 qui prolonge la plaque vers le bas à partir d'un bord inférieur de cette plaque 31A. L'extrémité basse de la languette 37 est située sensiblement dans le même plan vertical que l'extrémité basse de la languette 39, derrière cette languette 39.The left plate 31 B comprises a lower front tongue 39 which extends the plate downwards from a lower edge of this plate 31A. The lower end of the tongue 37 is located substantially in the same vertical plane as the lower end of the tongue 39, behind this tongue 39.

Le pivot 29 est monté transversalement entre les coins arrière supérieurs des plaques 31 A, 31B.The pivot 29 is mounted transversely between the upper rear corners of the plates 31A, 31B.

La pédale 19 comprend, au voisinage de son extrémité haute 41, un bras de levier 43 et à son extrémité basse 44, un patin terminal d'actionnement 45.The pedal 19 comprises, near its upper end 41, a lever arm 43 and at its lower end 44, a terminal actuating pad 45.

La pédale 19 est montée rotative autour de l'axe A-A' sur le pivot 29 entre une position de repos en appui contre la butée arrière 33 et une position active de débrayage en appui sur la butée avant 35.The pedal 19 is rotatably mounted about the axis A-A 'on the pivot 29 between a rest position bearing against the rear stop 33 and an active disengaging position bearing on the front stop 35.

Le bras de levier 43 est articulé à la tige de commande 15, de sorte que la tige de commande 15 forme, avec l'embrayage 13, des moyens de rappel permanent de la pédale 19 vers sa position de repos. La tige 15 traverse le socle 25 par une ouverture.The lever arm 43 is articulated to the control rod 15, so that the control rod 15 forms, with the clutch 13, biasing means permanent pedal 19 to its rest position. The rod 15 passes through the base 25 through an opening.

Les moyens d'assistance 21 comprennent un fourreau 47, un piston 49 monté coulissant dans le fourreau 47 et un ressort d'assistance 51 interposé entre le fourreau 47 et le piston 49.The assistance means 21 comprise a sleeve 47, a piston 49 slidably mounted in the sleeve 47 and an assistance spring 51 interposed between the sleeve 47 and the piston 49.

Le fourreau 47 est articulé sur la pédale 19 en un premier point 53. Il comprend un siège annulaire bas 54 de réception du ressort 51.The sleeve 47 is articulated on the pedal 19 at a first point 53. It comprises a low annular seat 54 for receiving the spring 51.

Le piston 49 est articulé en un deuxième point 55 situé à l'extrémité basse de la languette arrière 37. Il comprend un siège annulaire haut 59 situé en regard du siège bas 54.The piston 49 is articulated at a second point 55 located at the lower end of the rear tongue 37. It comprises a high annular seat 59 located opposite the low seat 54.

Le ressort d'assistance 51 est monté à compression entre les sièges annulaires haut et bas 59 et 54.The assist spring 51 is compression mounted between the up and down annular seats 59 and 54.

Comme on le verra plus bas, lorsque le premier point 53 est situé derrière l'axe B-B' reliant le deuxième point d'articulation 55 et le pivot 29, le ressort d'assistance 51 exerce une force de rappel sur la pédale 19 qui sollicite la pédale 19 vers sa position de repos. Au contraire, lorsque le premier point 53 est situé devant l'axe B-B', le ressort d'assistance 51 exerce une force d'assistance qui sollicite la pédale 19 vers la position active de débrayage. Une position intermédiaire de la pédale 19 est définie lorsque le premier point 53 est situé sur l'axe B-B'.As will be seen below, when the first point 53 is located behind the axis BB 'connecting the second articulation point 55 and the pivot 29, the assistance spring 51 exerts a restoring force on the pedal 19 which requests the pedal 19 to its rest position. On the contrary, when the first point 53 is located in front of the axis B-B ', the assistance spring 51 exerts an assisting force which urges the pedal 19 towards the active disengaging position. An intermediate position of the pedal 19 is defined when the first point 53 is located on the axis B-B '.

Les moyens additionnels de correction d'assistance 23 comprennent un ressort hélicoïdal 61, un guide de ressort 63 articulé sur un troisième point 64 du support situé à l'extrémité basse de la languette inférieure avant 39, et des moyens 65 de sollicitation du ressort articulés sur la pédale 19 en un quatrième point 66 situé en dessous du premier point 53.The additional assistance correction means 23 comprise a helical spring 61, a spring guide 63 articulated on a third point 64 of the support located at the lower end of the lower front tongue 39, and means 65 for soliciting the articulated spring. on the pedal 19 in a fourth point 66 located below the first point 53.

Comme illustré par la Figure 2, le guide 63 comprend une chape supérieure 69 d'articulation à la languette inférieure 39, un manchon de guidage 71 fixé dans la chape 69, et un fourreau 73 monté coulissant sur le manchon 71.As illustrated by Figure 2 , the guide 63 comprises an upper clevis 69 of articulation to the lower tongue 39, a guide sleeve 71 fixed in the yoke 69, and a sleeve 73 slidably mounted on the sleeve 71.

La chape supérieure 69 délimite, en se déplaçant depuis le troisième point 64 vers le quatrième point 66, un épaulement annulaire 75 orienté vers la pédale 19 et une butée 77 de déplacement du fourreau 73 également orientée vers la pédale 19.The upper yoke 69 defines, moving from the third point 64 to the fourth point 66, an annular shoulder 75 facing the pedal 19 and a stop 77 of movement of the sleeve 73 also facing the pedal 19.

Le manchon 71 délimite, intérieurement un canal de guidage 79 d'axe C-C' parallèle à l'axe reliant les points 64 et 66. Il délimite extérieurement une butée 81 annulaire de blocage du fourreau 73 située sous la butée 77.The sleeve 71 delimits, internally, a guide channel 79 of axis C-C 'parallel to the axis connecting the points 64 and 66. It delimits externally an annular locking stop 81 of the sleeve 73 located under the abutment 77.

Le fourreau 73 comprend, à son extrémité supérieure à gauche sur la Figure 2, un bourrelet intérieur 83 en appui sur le manchon 71 et, à son extrémité libre inférieure à droite sur la Figure 2, une collerette inférieure 85 qui fait saillie radialement vers l'extérieur en regard de l'épaulement 75.The sheath 73 comprises, at its upper left end on the Figure 2 , an inner bead 83 resting on the sleeve 71 and, at its lower free end on the right on the Figure 2 , a lower flange 85 which protrudes radially outwards facing the shoulder 75.

Le fourreau 73 est mobile à coulissement sur le manchon 71 entre une position supérieure dans laquelle le bourrelet 83 est en appui contre la butée supérieure 77 et une position inférieure dans laquelle le bourrelet 83 est bloqué par la butée inférieure 81.The sheath 73 is slidably movable on the sleeve 71 between an upper position in which the bead 83 bears against the upper stop 77 and a lower position in which the bead 83 is blocked by the lower stop 81.

Le ressort de rappel 61 est monté à compression entre la collerette inférieure 85 et l'épaulement 75. Il sollicite le fourreau 73 vers sa position inférieure.The return spring 61 is mounted to compression between the lower flange 85 and the shoulder 75. It biases the sleeve 73 to its lower position.

Les moyens 65 de sollicitation du ressort comprennent une chape inférieure 87 et une tige de guidage 91 d'axe C-C' montée coulissante dans le canal 79 du manchon 71.The means 65 for biasing the spring comprise a lower clevis 87 and a guide rod 91 of axis C-C 'slidably mounted in the channel 79 of the sleeve 71.

La chape inférieure 87 est ainsi mobile entre une position de repos située à l'écart de la collerette 85 et une position de sollicitation du ressort 61 dans laquelle la chape inférieure 87 bute contre la collerette 85.The lower yoke 87 is thus movable between a rest position located away from the collar 85 and a biasing position of the spring 61 in which the lower yoke 87 abuts against the flange 85.

En référence à la Figure 1, les moyens d'assistance 21 et les moyens additionnels de correction d'assistance 23 forment deux côtés en regard d'un quadrilatère d'articulation 95 reliant la pédale 19 au support 17 et délimité par les premier, deuxième, troisième et quatrième points d'articulation 53, 55, 64, 66. Le quadrilatère d'articulation 95 est sensiblement compris dans le plan vertical de rotation de la pédale 19 autour de l'axe A-A'.With reference to the Figure 1 the assistance means 21 and the additional assistance correction means 23 form two sides facing a hinge quadrilateral 95 connecting the pedal 19 to the support 17 and delimited by the first, second, third and fourth articulation 53, 55, 64, 66. The articulation quadrilateral 95 is substantially in the vertical plane of rotation of the pedal 19 around the axis A-A '.

Le fonctionnement de l'agencement de pédale d'embrayage 11 selon l'invention lors du débrayage de l'embrayage 13 va maintenant être décrit.The operation of the clutch pedal arrangement 11 according to the invention when the clutch 13 is disengaged will now be described.

Initialement, la pédale 19 est maintenue dans sa position de repos sous l'action de la tige de commande 15 qui pousse le bras de levier 43 vers l'arrière.Initially, the pedal 19 is held in its rest position under the action of the control rod 15 which pushes the lever arm 43 rearwardly.

Dans cette position, la pédale 19 est en appui contre la butée arrière 33. Par ailleurs, le premier point d'articulation 53 est situé à l'arrière de l'axe B-B', de sorte que le ressort d'assistance 51 exerce une force de sollicitation complémentaire de la pédale 19 vers la position de repos comme le montre la courbe 101 sur la Figure 3.In this position, the pedal 19 bears against the rear stop 33. Furthermore, the first pivot point 53 is located behind the axis B-B ', so that the assistance spring 51 exerts a biasing force complementary to the pedal 19 towards the rest position as shown by the curve 101 on the Figure 3 .

Par ailleurs, le ressort de correction d'assistance 61 pousse le fourreau 73 vers le bas et maintient le bourrelet 83 en appui contre la butée 81.Moreover, the assistance correction spring 61 pushes the sheath 73 downwards and keeps the bead 83 in abutment against the stop 81.

Cependant, la chape inférieure 87 est disposée à l'écart de la collerette 85, de sorte que le ressort 61 n'exerce pas de force sur la pédale 19 (courbe 103 sur la Figure 3).However, the lower yoke 87 is disposed away from the flange 85, so that the spring 61 exerts no force on the pedal 19 (curve 103 on the Figure 3 ).

Lorsque le conducteur souhaite débrayer, il pousse la pédale d'embrayage 19 vers l'avant, et exerce une force sur le bras de levier 43 pour déplacer la tige 15 vers l'avant à l'encontre de la force de rappel de l'embrayage 13.When the driver wishes to disengage, he pushes the clutch pedal 19 forward, and exerts a force on the lever arm 43 to move the rod 15 forward against the restoring force of the clutch 13.

Entre la position de repos marquée 105 sur la Figure 3 et la position intermédiaire marquée 107 sur la Figure 3, le ressort d'assistance 51 exerce une force décroissante de sollicitation de la pédale 19 vers la position de repos.Between the marked rest position 105 on the Figure 3 and the intermediate position marked 107 on the Figure 3 , the assistance spring 51 exerts a decreasing force for biasing the pedal 19 towards the rest position.

Entre ces positions, la tige 91 coulisse librement dans le canal 79 et les moyens de correction d'assistance additionnels 23 exercent une force sensiblement nulle sur la pédale 19.Between these positions, the rod 91 slides freely in the channel 79 and the additional assistance correction means 23 exert a substantially zero force on the pedal 19.

A partir de la position intermédiaire, le premier point d'articulation 53 passe devant l'axe B-B'. Le ressort 51 exerce alors sur la pédale 19 une force comprenant une composante dirigée vers l'avant. Cette force s'oppose à la force de rappel exercée par la tige 15 sur le bras de levier 43 et assiste le conducteur pour déplacer la pédale vers la position active de débrayage.From the intermediate position, the first pivot point 53 passes in front of the axis B-B '. The spring 51 then exerts on the pedal 19 a force comprising a component directed towards the front. This force opposes the return force exerted by the rod 15 on the lever arm 43 and assists the driver to move the pedal to the active declutching position.

Une fois le débrayage effectué (point 109 sur la Figure 3), la force de rappel exercée par la tige 15 diminue notablement. La pédale 19 atteint alors une position de correction de l'assistance, marquée 111 sur la Figure 3 et située au-delà de la position intermédiaire. Dans cette position, la chape inférieure 87 entre en contact avec la collerette 85 située sur l'extrémité libre du ressort de correction d'assistance 61.Once the disengagement has been completed (point 109 on the Figure 3 ), the restoring force exerted by the rod 15 decreases significantly. The pedal 19 then reaches a position of correction of the assistance, marked 111 on the Figure 3 and located beyond the intermediate position. In this position, the lower clevis 87 comes into contact with the flange 85 located on the free end of the assistance correction spring 61.

Lorsque le conducteur poursuit le déplacement de la pédale vers la position active, la chape inférieure 87 pousse la collerette 85 vers le haut. Le ressort 61 exerce alors une force de correction d'assistance additionnelle sur la pédale 19 qui sollicite la pédale 19 vers sa position de repos. Cette force est orientée vers l'arrière suivant l'axe C-C'.When the driver continues to move the pedal to the active position, the lower yoke 87 pushes the flange 85 upwards. The spring 61 then exerts an additional assist correction force on the pedal 19 which urges the pedal 19 towards its rest position. This force is oriented rearward along the axis C-C '.

La force de correction d'assistance d'axe C-C' générée par les moyens additionnels de correction d'assistance 23 s'oppose à la force d'assistance d'axe D-D' passant par le premier point 53 et le deuxième point 55, générée par les moyens d'assistance 21.The CC axis assist correction force generated by the additional assist correction means 23 opposes the DD axis assist force passing through the first point 53 and the second generated point 55. by means of assistance 21.

Les moyens additionnels de correction d'assistance 23 et les moyens d'assistance 21 exercent donc, à partir de la position de correction de l'assistance, des forces d'axes et de sens distincts sur la pédale 19.The additional assistance correction means 23 and the assistance means 21 thus exert, from the assistance correction position, distinct axis and direction forces on the pedal 19.

La disposition en parallèle des moyens additionnels de correction d'assistance 23 et des moyens d'assistance 21, qui forment ainsi un quadrilatère d'articulation 95, permet de régler facilement la position de la pédale 19 à partir de laquelle la force de correction d'assistance additionnelle s'applique sur cette pédale 19. Ce réglage est effectué notamment en changeant la longueur du manchon 71 et du fourreau 73. Par ailleurs, l'intensité de la force de correction d'assistance additionnelle peut être réglée en modifiant les caractéristiques du ressort de correction d'assistance 61, indépendamment des caractéristiques du ressort d'assistance 51.The parallel arrangement of the additional assistance correction means 23 and the assistance means 21, which thus form a hinge quadrilateral 95, makes it possible to easily adjust the position of the pedal 19 from which the correction force of additional assistance applies to this pedal 19. This adjustment is made in particular by changing the length of the sleeve 71 and the sleeve 73. Moreover, the intensity of the additional assistance correction force can be adjusted by changing the characteristics. of the assistance correction spring 61, independently of the characteristics of the assistance spring 51.

L'agencement permet donc, par des moyens simples et peu coûteux, de disposer d'un agencement 11 muni de moyens d'assistance à l'embrayage d'intensité facilement réglable le long de la course de la pédale d'embrayage.The arrangement thus makes it possible, by simple and inexpensive means, to have an arrangement 11 provided with clutch assistance means of intensity that is easily adjustable along the travel of the clutch pedal.

Par ailleurs, lorsque le conducteur souhaite ré-embrayer, le ressort de correction d'assistance 61 crée une force de rappel de la pédale 19 vers la position de repos qui, associé à l'effort d'assistance, présente une intensité sensiblement constante, ce qui permet un bon dosage du déplacement de la pédale 19 vers la position de repos et une remontée franche de la pédale d'embrayage.Furthermore, when the driver wishes to re-engage, the assistance correction spring 61 creates a restoring force of the pedal 19 to the rest position which, associated with the assistance effort, has a substantially constant intensity, which allows a good dosage of the movement of the pedal 19 to the rest position and a clean lift of the clutch pedal.

Selon l'invention illustrée partiellement par la Figure 4, les moyens additionnels de correction d'assistance 23 présentent la même structure que les moyens d'assistance 21. Toutefois, le ressort de correction d'assistance 61 est un ressort présentant une première région inférieure 121 de raideur sensiblement nulle et une deuxième région supérieure 123 de raideur non nulle.According to the invention partially illustrated by the Figure 4 , the additional assistance correction means 23 have the same structure as the assistance means 21. However, the assistance correction spring 61 is a spring having a first lower region 121 of substantially zero stiffness and a second upper region 123 of non-zero stiffness.

Par "raideur sensiblement nulle", on entend une raideur au moins 10 fois inférieure à la raideur du ressort d'assistance 51 et susceptible de générer une force élastique d'intensité au moins 10 fois inférieure à la force maximale générée par la tige 15 de commande de l'embrayage 13 sur la pédale 19.By "substantially zero stiffness" means a stiffness at least 10 times less than the stiffness of the assistance spring 51 and capable of generating an elastic force intensity at least 10 times less than the maximum force generated by the rod 15 of controlling the clutch 13 on the pedal 19.

Les deux extrémités du ressort 61 s'appuient sur des chapes articulées respectivement sur le troisième point d'articulation 64 et sur le quatrième point d'articulation 66.The two ends of the spring 61 rest on yokes hinged respectively on the third hinge point 64 and on the fourth hinge point 66.

Initialement, entre la position de repos et la position de correction de l'assistance, seule la région 121 de raideur sensiblement nulle est sollicitée. La force exercée sur la pédale 19 par le ressort 61 est donc sensiblement nulle.Initially, between the rest position and the assistance correction position, only the region 121 of substantially zero stiffness is solicited. The force exerted on the pedal 19 by the spring 61 is therefore substantially zero.

Dans la position de correction de l'assistance, les spires de la région 121 sont totalement comprimées. Au-delà de cette position, la région 123 de raideur non nulle est sollicitée de sorte qu'elle crée une force de correction d'assistance non-nulle dirigée vers l'arrière à l'encontre de la force d'assistance générée par le ressort d'assistance 51.In the assist correction position, the turns of region 121 are fully compressed. Beyond this position, the region 123 of non-zero stiffness is biased so that it creates a rearward non-zero assist correction force against the assist force generated by the assistance spring 51.

Claims (7)

  1. A control pedal arrangement (11) of an automobile vehicle, of the type comprising:
    - a pedal support (17);
    - an actuating pedal (19) mounted pivotally on the support (17) about a pivoting axis (A-A') between a rest position and an activation position, the pedal (19) comprising means (43) for connecting to permanent return means (13, 15) of the pedal (19) towards its rest position;
    - means (21) for assisting the actuation of the pedal (19), articulated on the pedal (19) and on the support (17), the assistance means biasing the pedal (19) towards the activation position at least from an intermediate position of the pedal (19); and
    - additional assistance correction means (23) of the pedal (19), which are active from an assistance correction position situated between the intermediate position and the activation position;
    - the assistance means (21) and the additional assistance correction means (23) being mounted in parallel between the pedal (19) and the support (17), the additional assistance correction means (23) and the assistance means (21) exerting forces of distinct axes on the pedal (19), in at least a given position of the pedal around its pivoting axis (A-A'),
    characterized in that the additional assistance correction means (23) are articulated around the pedal (19) and on the support (17) and form, with the assistance means (21), an articulation quadrilateral (95) connecting the pedal (19) to the support (17); the additional assistance correction means (23) comprising an elastic biasing means (61) comprising a region (121) of substantially zero rigidity, biased when the pedal is situated between the rest position and the assistance correction position, and a region (123) of non-zero rigidity, biased when the pedal is situated beyond the assistance correction position.
  2. The arrangement (11) according to Claim 1, characterized in that the articulation quadrilateral (95) is substantially comprised in the plane of rotation of the pedal (19) around its pivoting axis (A-A').
  3. The arrangement (11) according to any one of the preceding claims, characterized in that the assistance means (21) bias the pedal (19) towards the rest position when the pedal is situated between the rest position and the intermediate position.
  4. The arrangement (11) according to one of the preceding claims, characterized in that the elastic biasing member is carried by one of the support (17) and pedal (19), the additional assistance correction means (23) comprising a stop (87) carried by the other of the support (17) and pedal (19), and in that the stop (87) is situated at a distance from a free end (85) of the elastic biasing means (61) when the pedal is situated between the rest position and the assistance correction position, with the stop (87) bearing on the free end (85) when the pedal is situated beyond the assistance correction position.
  5. The arrangement (11) according to any one of the preceding claims, characterized in that the additional assistance correction means (23) comprise a sleeve (71) for supporting the biasing member (61) articulated on one of the support (17) and pedal (19), and a guide pin (91) articulated on the other of the support (17) and pedal (19), the guide pin (91) being mounted in a sliding manner in the sleeve (71).
  6. The arrangement (11) according to any one of the preceding claims, characterized in that the connecting means (43) are intended to be connected to a clutch (13) of an automobile vehicle.
  7. An automobile vehicle, characterized in that it comprises an arrangement (11) according to any one of the preceding claims.
EP06794418A 2005-05-24 2006-05-12 Pedal arrangement for motor vehicle and associated motor vehicle Not-in-force EP1883881B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0505206A FR2886421B1 (en) 2005-05-24 2005-05-24 MOTOR VEHICLE PEDAL ARRANGEMENT AND ASSOCIATED MOTOR VEHICLE
PCT/FR2006/050433 WO2007003810A2 (en) 2005-05-24 2006-05-12 Pedal arrangement for motor vehicle and associated motor vehicle

Publications (2)

Publication Number Publication Date
EP1883881A2 EP1883881A2 (en) 2008-02-06
EP1883881B1 true EP1883881B1 (en) 2010-10-20

Family

ID=35447240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06794418A Not-in-force EP1883881B1 (en) 2005-05-24 2006-05-12 Pedal arrangement for motor vehicle and associated motor vehicle

Country Status (5)

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EP (1) EP1883881B1 (en)
AT (1) ATE485549T1 (en)
DE (1) DE602006017686D1 (en)
FR (1) FR2886421B1 (en)
WO (1) WO2007003810A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE545796T1 (en) * 2008-12-01 2012-03-15 Gm Global Tech Operations Inc CLUTCH SYSTEM
US8418828B2 (en) 2010-04-20 2013-04-16 GM Global Technology Operations LLC Unpowered pedal assist device and vehicular clutch assembly including the same
ITUB20156277A1 (en) * 2015-12-03 2017-06-03 Plastic Components And Modules Automotive S P A Electronic clutch pedal for vehicle.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2923027C2 (en) 1979-06-07 1985-02-14 Volkswagenwerk Ag, 3180 Wolfsburg Device for actuating a multi-plate spring clutch of a motor vehicle
JPS62196733U (en) * 1986-02-27 1987-12-14
FR2848518B1 (en) * 2002-12-13 2006-01-13 Renault Sa PASSIVE SYSTEM FOR REINSTALLING EFFORT ON A PEDAL, IN PARTICULAR A CLUTCH PEDAL FOR A MOTOR VEHICLE
DE10258938B4 (en) * 2002-12-17 2016-07-14 Volkswagen Ag Actuating device for a motor vehicle clutch

Also Published As

Publication number Publication date
WO2007003810A2 (en) 2007-01-11
ATE485549T1 (en) 2010-11-15
WO2007003810A3 (en) 2007-03-08
EP1883881A2 (en) 2008-02-06
FR2886421B1 (en) 2009-01-23
FR2886421A1 (en) 2006-12-01
DE602006017686D1 (en) 2010-12-02

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