EP2734752A1 - Device for locking an automatic gearbox of a motor vehicle in the park position - Google Patents

Device for locking an automatic gearbox of a motor vehicle in the park position

Info

Publication number
EP2734752A1
EP2734752A1 EP12750435.5A EP12750435A EP2734752A1 EP 2734752 A1 EP2734752 A1 EP 2734752A1 EP 12750435 A EP12750435 A EP 12750435A EP 2734752 A1 EP2734752 A1 EP 2734752A1
Authority
EP
European Patent Office
Prior art keywords
control system
carriage
lever
levers
actuator
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.)
Withdrawn
Application number
EP12750435.5A
Other languages
German (de)
French (fr)
Inventor
Sébastien Maitre
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.)
Dura Automotive Systems SAS
Original Assignee
Dura Automotive Systems SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dura Automotive Systems SAS filed Critical Dura Automotive Systems SAS
Publication of EP2734752A1 publication Critical patent/EP2734752A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/12—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/005—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles by locking of wheel or transmission rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission

Definitions

  • the invention relates to the technical sector of gearboxes for motor vehicles and relates more particularly to automatic transmissions.
  • automatic transmission must be taken in its broad sense, being likely to affect all types of boxes, including robotized gearbox single or double clutch.
  • this type of box can operate either in automatic mode, the reports being changed automatically at the appropriate time, or in manual mode, the reports being changed by the driver by means of buttons, pallets, levers ....
  • automatic mode the lever or other control systems, can occupy generally different positions, namely a position P (Park), R (Reverse), N (Neutral), D (Drive) and possibly S (Sport).
  • this locking system is provided by a finger capable of cooperating with a gear that has a part of the gearbox.
  • This finger can be actuated by a carriage which has, at one of its ends, superposed rollers, one of which cooperates with a cam profile that has the finger, while the other cooperates with a rolling path plate that presents part of the gearbox.
  • the other end of the carriage is coupled to a rod mounted in combination with a spring being adapted to be controlled in a linear translational movement.
  • This rod has the function of absorbing the non-movement likely to result in position P of the gearbox control member, the non engagement of the finger in a notch of the toothed wheel.
  • This linear slide system capable of absorbing or not this movement difference resulting from the positioning of the finger with respect to a notch (locking of the box) or not (non-locking of the box) has a certain size.
  • the object of the invention is to remedy these disadvantages in a simple, safe, effective and rational manner.
  • the problem to be solved by the invention is to ensure the locking of the automatic transmission including P position, by a compact device of small size and particularly reliable in its operation.
  • a locking device park position of an automatic transmission for a motor vehicle comprising a carriage subject to a control system controlled by a part of the gearbox for to be displaced in translation relative to a locking finger adapted to cooperate with a ring gear that has said gearbox, said carriage being coupled to means actuated by an actuator to be moved, if necessary in a fixed position of the control system .
  • the object of the invention is therefore to replace the system with linear slide by an angular system.
  • the means are constituted by two superposed compact levers pivotally mounted with respect to an axis in contact with a spring, one of the levers being coupled to the carriage, while the other lever is coupled to the control system. ordered.
  • the spring is mounted on the pivot axis between the two levers to allow simultaneous angular displacement of said levers or one of the levers relative to the other lever in the stop position.
  • the control system lever has an indexing finger adapted to cooperate, according to a selected position of the control system, with complementary shapes that has a support plate in which are pivotally mounted said control system lever, and the trolley lever.
  • the carriage lever cooperates with a locking pin actuated by the actuator.
  • the device according to the invention is able to take into account the possible positions of the control system which are the neutral point, the 4th and the reverse.
  • the lever of the carriage has overflowing its base a shoulder engaged in an opening of the control system lever to create a direct contact area.
  • FIG. 1 is a perspective view of the locking device according to the invention.
  • FIG. 2 is a perspective view corresponding to Figure 1 considered from below the lever assembly and control system and carriage mounted on a pivot axis in combination with a torsion spring;
  • FIG. 3 is a perspective view of all the levers
  • FIG. 4 is a perspective view of the device in the neutral point position of the lever and in the neutral, 4th, reverse position of the control system;
  • Figure 5 is a perspective view showing the position of the carriage lever and the control system lever as shown in Figure 4;
  • - Figure 6 is a perspective view of the device of all the levers and the control system, in the 4th position;
  • FIG. 7 is a perspective view showing the positioning of the levers according to the position of the control system as shown in Figure 6;
  • FIG. 8 is a perspective view showing the positioning of the levers, all the levers being in the reverse position and the control system also in the reverse position;
  • FIG. 9 is a perspective view of the device when all of the levers is in position P and the finger not engaged in a notch of the toothed wheel, while the control system is in the reverse position;
  • FIG. 10 is a perspective view of the device when the set of levers is in position P and in the case where the finger is engaged in a notch of the toothed wheel, the control system being in the reverse position;
  • FIG. 1 1 shows the positioning of the levers according to the configuration shown in Figure 10;
  • FIG. 12 is a partial perspective view showing the zone of direct contact between the carriage lever and the control system lever;
  • the locking device in the P position (Park) of the automatic transmission comprises, in a known manner, a carriage (1) subject to a control system (2) controlled by a part of the gearbox to be moved in translation as will be indicated in the following description, with respect to a locking finger (3).
  • One end of the carriage (1) has rollers, one of which co-operates with a cam profile (3a) of the finger and the other with a flat raceway (4) that has a portion of the gearbox.
  • the finger (3) has a boss (3b) for cooperating with a toothed wheel that has a portion of the gearbox.
  • the boss (3b) is engaged in one of the notches of the toothed wheel, the gearbox is blocked.
  • the control of the carriage (1) to absorb non-movement when the boss of the finger does not cooperate with a notch is provided by a set of two levers (5) and (6) of compact geometric shape.
  • the lever (5) constitutes the carriage lever
  • the lever (6) constitutes the control system lever.
  • Said levers (5) and (6) are pivotally mounted relative to an axis (7) against a torsion spring (8).
  • the carriage lever (5) is coupled to its free end of the carriage (1) considered opposite its end cooperating with the finger (3).
  • the control system lever (6) is coupled, for example by a rod (2), to a control system controlled by the gearbox.
  • the spring (8) is mounted on the pivot axis (7), between the two levers (5) and (6), to allow simultaneous angular displacement of said levers or a displacement of one of the levers relative to the other in abutment position as will be indicated in the following description.
  • the control system lever (6) has an indexing finger (9), able to cooperate according to the selected positions of the control system, with complementary shapes (10a) that a support plate (10) in which are pivoted the levers (5) and (6).
  • the carriage lever (5) cooperates with a locking pin (1 1) actuated for example by an actuator secured to the box control member.
  • the control system angularly drives all the levers (5) and (6) via the link (2), under the effect of the actuation of the actuator, in order to drive the carriage (1).
  • the device is maintained in the neutral position, 4th, and reverse by the indexing finger (9), despite the opposite force exerted by the torsion spring (8). Indexing becomes motor after approximately 60% of the control system stroke.
  • a clearance of approximately plus or minus two millimeters is provided at the connection of the rod with the lever of the control system (6) in the direction of movement of said lever to ensure the absence of parasitic forces on the control system.
  • the manual unlocking of the device can be performed by any known means, being able to be arranged to be controlled from the passenger compartment of the vehicle.
  • the device according to the invention is able to operate according to the possible positions of the control system namely neutral point, 4th, reverse. Referring to Figures 4 to 1 1.
  • levers (5) and (6) are in the neutral position, the control system being in position, neutral, 4th, reverse.
  • the actuator is not powered, a game of a few millimeters, of the order of 1mm, appears between the locking pin (1 1) and a carriage lever portion (5).
  • levers (5) and (6) and the control system are in the reverse position.
  • the actuator is not powered so that the carriage (1) is blocked by the locking pin (1 1).
  • the spring (8) absorbs relative movements between the control system lever (6) and the carriage lever (5).
  • the levers (5) and (6) are indexed in the reverse position by the finger (9) in the plate (10).
  • the device is shown when the finger (3) is not engaged in a notch of the toothed wheel.
  • the levers (5) and (6) are in position P.
  • the control system is in the reverse position. With the actuator powered, the control system lever (9) is always indexed in the reverse position.
  • the spring (8) absorbs the relative displacement between the control system lever (6) and the carriage lever (5) as previously indicated. In this case, the locking pin (1 1), controlled by the actuator, bears on the carriage lever (5).

Abstract

This device comprises a carriage (1) secured to a control system controlled by a part of the gearbox in order to be moved in translation in relation to a locking pin (3) capable of engaging with a crown gear of said gearbox, said carriage (1) being coupled to means actuated by an actuator in order to be moved, if necessary, to a fixed position of the control system, characterised in that the means are comprised of two compact superimposed levers (5) and (6) which are pivotally mounted in relation to a pin (7), counter to a spring (8), one of the levers (5) being coupled to the carriage, while the other lever (6) is coupled to the control system.

Description

DISPOSITIF DE VERROUILLAGE EN POSITION PARC D'UNE BOITE DE VITESSES AUTOMATIQUE POUR VEHICULE AUTOMOBILE. L'invention se rattache au secteur technique des boîtes de vitesses pour véhicules automobiles et concerne plus particulièrement les boîtes de vitesses automatiques.  LOCKING DEVICE IN THE PARK POSITION OF AN AUTOMATIC GEARBOX FOR A MOTOR VEHICLE. The invention relates to the technical sector of gearboxes for motor vehicles and relates more particularly to automatic transmissions.
Dans la suite la description, le terme boîte automatique doit être pris dans son acception large, en étant susceptible de concerner tous types de boîtes, notamment les boites de vitesses robotisées à simple ou double embrayage. In the following description, the term automatic transmission must be taken in its broad sense, being likely to affect all types of boxes, including robotized gearbox single or double clutch.
On rappelle que ce type de boîte peut fonctionner soit en mode automatique, les rapports étant changés automatiquement au moment opportun, soit en mode manuel, les rapports étant changés par le conducteur au moyen de boutons, palettes, leviers.... En mode automatique, le levier ou autres systèmes de commandes, peut occuper généralement différentes positions, à savoir une position P (Park), R (Reverse), N (Neutre), D (Drive) et éventuellement S (Sport). It is recalled that this type of box can operate either in automatic mode, the reports being changed automatically at the appropriate time, or in manual mode, the reports being changed by the driver by means of buttons, pallets, levers .... In automatic mode , the lever or other control systems, can occupy generally different positions, namely a position P (Park), R (Reverse), N (Neutral), D (Drive) and possibly S (Sport).
Quel que soit le type de boîtes de vitesses automatiques, ces dernières doivent comporter un système de blocage lorsque le véhicule est en position (P). Généralement, ce système de blocage est assuré par un doigt susceptible de coopérer avec une roue dentée que présente une partie de la boîte de vitesses. Ce doigt peut être actionné par un chariot qui présente, à l'une de ses extrémités, des rouleaux superposés dont l'un coopère avec un profil en came que présente le doigt, tandis que l'autre coopère avec un chemin de roulement plaque que présente une partie de la boîte de vitesses. L'autre extrémité du chariot est accouplée à une tige montée en combinaison avec un ressort en étant apte à être commandée selon un mouvement de translation linéaire. Cette tige a pour fonction d'absorber le non mouvement susceptible de résulter, en position P de l'organe de commande de la boite de vitesses, du non engagement du doigt dans une encoche de la roue dentée. Ce système de glissière linéaire apte à absorber ou non cette différence de mouvement résultant du positionnement du doigt par rapport à une encoche (verrouillage de la boîte) ou non (non verrouillage de la boîte) présente un certain encombrement. Whatever the type of automatic transmissions, the latter must have a locking system when the vehicle is in position (P). Generally, this locking system is provided by a finger capable of cooperating with a gear that has a part of the gearbox. This finger can be actuated by a carriage which has, at one of its ends, superposed rollers, one of which cooperates with a cam profile that has the finger, while the other cooperates with a rolling path plate that presents part of the gearbox. The other end of the carriage is coupled to a rod mounted in combination with a spring being adapted to be controlled in a linear translational movement. This rod has the function of absorbing the non-movement likely to result in position P of the gearbox control member, the non engagement of the finger in a notch of the toothed wheel. This linear slide system capable of absorbing or not this movement difference resulting from the positioning of the finger with respect to a notch (locking of the box) or not (non-locking of the box) has a certain size.
L'invention s'est fixée pour but de remédier à ces inconvénients de manière simple, sûre, efficace et rationnelle. The object of the invention is to remedy these disadvantages in a simple, safe, effective and rational manner.
Le problème que se propose de résoudre l'invention est de pouvoir assurer le blocage de la boîte de vitesses automatique notamment en position P, par un dispositif compact de faible encombrement et particulièrement fiable dans son fonctionnement. The problem to be solved by the invention is to ensure the locking of the automatic transmission including P position, by a compact device of small size and particularly reliable in its operation.
Pour résoudre un tel problème, il a été conçu et mis au point un dispositif de verrouillage en position parc d'une boîte de vitesses automatique pour véhicule automobile comprenant un chariot assujetti à un système de commande commandé par une partie de la boite de vitesses pour être déplacée en translation par rapport à un doigt de verrouillage apte à coopérer avec une couronne dentée que présente ladite boite de vitesses, ledit chariot étant accouplé à des moyens actionnés par un actionneur pour être déplacé, si nécessaire dans une position fixe du système de commande. L'objet de l'invention est donc de remplacer le système avec glissière linéaire par un système angulaire. Selon l'invention, les moyens sont constitués par deux leviers compacts superposés et montés pivotant par rapport à un axe à rencontre d'un ressort, l'un des leviers étant accouplé au chariot, tandis que l'autre levier est accouplé au système de commande. To solve such a problem, it has been designed and developed a locking device park position of an automatic transmission for a motor vehicle comprising a carriage subject to a control system controlled by a part of the gearbox for to be displaced in translation relative to a locking finger adapted to cooperate with a ring gear that has said gearbox, said carriage being coupled to means actuated by an actuator to be moved, if necessary in a fixed position of the control system . The object of the invention is therefore to replace the system with linear slide by an angular system. According to the invention, the means are constituted by two superposed compact levers pivotally mounted with respect to an axis in contact with a spring, one of the levers being coupled to the carriage, while the other lever is coupled to the control system. ordered.
Selon d'autres caractéristiques, le ressort est monté sur l'axe pivot entre les deux leviers pour permettre un déplacement angulaire simultané desdits leviers ou de l'un des leviers par rapport à l'autre levier en position de butée. According to other features, the spring is mounted on the pivot axis between the two levers to allow simultaneous angular displacement of said levers or one of the levers relative to the other lever in the stop position.
Le levier de système de commande présente un doigt d'indexation apte à coopérer, en fonction d'une position sélectionnée du système de commande, avec des formes complémentaires que présente une platine support dans laquelle sont montés pivotant ledit levier de système de commande, et le levier de chariot.  The control system lever has an indexing finger adapted to cooperate, according to a selected position of the control system, with complementary shapes that has a support plate in which are pivotally mounted said control system lever, and the trolley lever.
Le levier de chariot coopère avec un axe de blocage actionné par l'actionneur.  The carriage lever cooperates with a locking pin actuated by the actuator.
Il ressort donc de ces caractéristiques, que le déplacement du doigt de verrouillage pour absorber ou non la différence de mouvement ne résulte plus, selon l'état antérieur de la technique, d'un système de glissière linéaire mais, selon l'invention, d'un système commandé en rotation permettant de réduire de manière significative son encombrement. It therefore follows from these characteristics that the displacement of the locking pin to absorb or not the difference in motion no longer results, according to the prior art, from a linear slide system but, according to the invention, a system controlled in rotation to significantly reduce its size.
De manière importante, le dispositif selon l'invention est apte à prendre en compte les positions possibles du système de commande qui sont le point neutre, la 4ème et la marche arrière. Importantly, the device according to the invention is able to take into account the possible positions of the control system which are the neutral point, the 4th and the reverse.
Il en résulte les caractéristiques techniques fonctionnelles suivantes : lorsque l'ensemble des leviers de système de commande et de chariot est positionné en position point neutre, le système de commande en position point neutre/4ème. /marche arrière, et l'actionneur non alimenté, un jeu de quelques millimètres apparaît entre l'axe de blocage et le levier de chariot, The result is the following functional characteristics: when all the control system and carriage levers are positioned in neutral position, the control system in neutral / 4th position. / reverse, and the actuator not powered, a game of a few millimeters appears between the locking pin and the carriage lever,
lorsque l'ensemble des leviers de système de commande et de chariot est en position 4ème, le système de commande en position 4ème et l'actionneur non alimenté, le chariot recule par rapport au doigt de verrouillage, le levier de chariot étant entraîné angulairement directement par le levier de système de commande par l'intermédiaire du ressort, lesdits leviers étant indexés en position 4ème dans la platine support. when all the levers of the control system and the carriage are in the 4th position, the control system in the 4th position and the actuator not powered, the carriage moves back with respect to the locking pin, the carriage lever being angularly driven directly by the control system lever via the spring, said levers being indexed in the 4th position in the support plate.
lorsque l'ensemble des leviers de système de commande et de chariot est en position marche arrière, le système de commande en position marche arrière, et l'actionneur non alimenté, le levier de chariot est bloqué par l'axe de blocage, tandis que le levier de système de commande est déplacé angulairement à rencontre du ressort, pour être indexé en position marche arrière dans la platine. when all of the control system and carriage levers are in the reverse position, the control system in the reverse position, and the non-powered actuator, the carriage lever is blocked by the locking pin, while the control system lever is moved angularly against the spring, to be indexed in the reverse position in the plate.
lorsque l'ensemble des leviers de système de commande et de chariot est en position P, le doigt de verrouillage non engagé dans une encoche de la roue dentée, le système de commande en position marche arrière et l'actionneur alimenté, le ressort absorbe le déplacement relatif entre le levier de système de commande indexé en position marche arrière dans la platine, et le levier de chariot en appui sur l'axe de blocage déplacé par ledit actionneur. lorsque l'ensemble des leviers de système de commande et de chariot est engagé en position P, le doigt de verrouillage engagé dans une encoche de la couronne dentée, le système de commande en position marche arrière, et l'actionneur alimenté, le levier de système de commande est indexé en position marche arrière dans la platine et le chariot est ramené en avant sur le doigt de verrouillage sous l'effet de déplacement du levier de chariot en appui avec l'axe de blocage lors de l'arrêt de l'alimentation de l'actionneur. when all the control system and carriage levers are in position P, the locking pin not engaged in a notch of the gear wheel, the control system in the reverse position and the actuator supplied, the spring absorbs the relative movement between the lever control system indexed in the reverse position in the plate, and the carriage lever resting on the locking pin moved by said actuator. when all the levers of the control system and the carriage are engaged in position P, the locking finger engaged in a notch in the ring gear, the control system in the reverse position, and the actuator powered, the control system lever is indexed in the reverse position in the plate and the carriage is brought forward on the locking finger under the effect of moving the carriage lever in support with the locking pin when stopping the power supply of the actuator.
Selon une autre caractéristique, pour résoudre le problème posé de déverrouiller le dispositif dans des conditions extrêmes, le levier du chariot présente en débordement de sa base un épaulement engagé dans une ouverture du levier de système de commande pour créer une zone de contact direct. According to another characteristic, to solve the problem of unlocking the device under extreme conditions, the lever of the carriage has overflowing its base a shoulder engaged in an opening of the control system lever to create a direct contact area.
L'invention est exposée ci-après plus en détail à l'aide des figures des dessins annexés dans lesquels : The invention is described below in more detail with reference to the figures of the accompanying drawings, in which:
- la figure 1 est une vue en perspective du dispositif de verrouillage selon l'invention ;  - Figure 1 is a perspective view of the locking device according to the invention;
- la figure 2 est une vue en perspective correspondant à la figure 1 considéré par le dessous de l'ensemble de levier et de système de commande et de chariot monté sur un axe pivot en combinaison avec un ressort de torsion ;  - Figure 2 is a perspective view corresponding to Figure 1 considered from below the lever assembly and control system and carriage mounted on a pivot axis in combination with a torsion spring;
- la figure 3 est une vue en perspective de l'ensemble des leviers ; FIG. 3 is a perspective view of all the levers;
- la figure 4 est une vue en perspective du dispositif en position point neutre du levier et en position point neutre, 4ème, marche arrière, du système de commande ; FIG. 4 is a perspective view of the device in the neutral point position of the lever and in the neutral, 4th, reverse position of the control system;
- la figure 5 est une vue en perspective montrant la position du levier de chariot et du levier de système de commande tel qu'indiqué à la figure 4 ; - la figure 6 est une vue en perspective du dispositif de l'ensemble des leviers et du système de commande, en position 4ème ; Figure 5 is a perspective view showing the position of the carriage lever and the control system lever as shown in Figure 4; - Figure 6 is a perspective view of the device of all the levers and the control system, in the 4th position;
- la figure 7 est une vue en perspective montrant le positionnement des leviers selon la position du système de commande comme indiqué à la figure 6 ;  - Figure 7 is a perspective view showing the positioning of the levers according to the position of the control system as shown in Figure 6;
- la figure 8 est une vue en perspective montrant le positionnement des leviers, l'ensemble des leviers étant en position marche arrière et le système de commande également en position marche arrière ; - Figure 8 is a perspective view showing the positioning of the levers, all the levers being in the reverse position and the control system also in the reverse position;
- la figure 9 est une vue en perspective du dispositif lorsque l'ensemble des leviers est en position P et le doigt non engagé dans une encoche de la roue dentée, tandis que le système de commande est en position marche arrière ; - Figure 9 is a perspective view of the device when all of the levers is in position P and the finger not engaged in a notch of the toothed wheel, while the control system is in the reverse position;
- la figure 10 est une vue en perspective du dispositif lorsque l'ensemble de leviers est en position P et dans le cas où le doigt est engagé dans une encoche de la roue dentée, le système de commande étant en position marche arrière ;  - Figure 10 is a perspective view of the device when the set of levers is in position P and in the case where the finger is engaged in a notch of the toothed wheel, the control system being in the reverse position;
- la figure 1 1 montre le positionnement des leviers selon la configuration illustrée figure 10 ;  - Figure 1 1 shows the positioning of the levers according to the configuration shown in Figure 10;
- la figure 12 est une vue partielle et en perspective montrant la zone de contact direct entre le levier de chariot et le levier de système de commande ;  FIG. 12 is a partial perspective view showing the zone of direct contact between the carriage lever and the control system lever;
Comme indiqué, le dispositif de verrouillage en position P (Park) de la boîte de vitesses automatique comprend, d'une manière connue, un chariot (1) assujetti à un système de commande (2) commandée par une partie de la boite de vitesses pour être déplacé en translation comme il sera indiqué dans la suite de la description, par rapport à un doigt de verrouillage (3). L'une des extrémités du chariot (1) présente des rouleaux dont l'un coopère avec un profil en came (3a) du doigt et l'autre avec un chemin de roulement plat (4) que présente une partie de la boite de vitesses. As indicated, the locking device in the P position (Park) of the automatic transmission comprises, in a known manner, a carriage (1) subject to a control system (2) controlled by a part of the gearbox to be moved in translation as will be indicated in the following description, with respect to a locking finger (3). One end of the carriage (1) has rollers, one of which co-operates with a cam profile (3a) of the finger and the other with a flat raceway (4) that has a portion of the gearbox.
D'une manière connue, le doigt (3) présente un bossage (3b) destiné à coopérer avec une roue dentée que présente une partie de la boite de vitesses. Lorsque le bossage (3b) est engagé dans une des encoches de la roue dentée, la boîte de vitesses est bloquée.  In a known manner, the finger (3) has a boss (3b) for cooperating with a toothed wheel that has a portion of the gearbox. When the boss (3b) is engaged in one of the notches of the toothed wheel, the gearbox is blocked.
Selon l'invention, la commande du chariot (1) pour absorber le non mouvement lorsque le bossage du doigt ne coopère pas avec une encoche, est assuré par un ensemble de deux leviers (5) et (6) de forme géométrique compacte. Le levier (5) constitue le levier de chariot, tandis que le levier (6) constitue le levier de système de commande. Lesdits leviers (5) et (6) sont montés pivotants par rapport à un axe (7) à l'encontre d'un ressort de torsion (8). Le levier de chariot (5) est accouplé à son extrémité libre du chariot (1) considéré à l'opposé de son extrémité coopérant avec le doigt (3). Le levier de système de commande (6) est accouplé, par exemple par une biellette (2), à un système de commande commandé par la boîte de vitesses. According to the invention, the control of the carriage (1) to absorb non-movement when the boss of the finger does not cooperate with a notch, is provided by a set of two levers (5) and (6) of compact geometric shape. The lever (5) constitutes the carriage lever, while the lever (6) constitutes the control system lever. Said levers (5) and (6) are pivotally mounted relative to an axis (7) against a torsion spring (8). The carriage lever (5) is coupled to its free end of the carriage (1) considered opposite its end cooperating with the finger (3). The control system lever (6) is coupled, for example by a rod (2), to a control system controlled by the gearbox.
Le ressort (8) est monté sur l'axe pivot (7), entre les deux leviers (5) et (6), pour permettre un déplacement angulaire simultané desdits leviers ou un déplacement de l'un des leviers par rapport à l'autre en position de butée comme il sera indiqué dans la suite de la description. Le levier de système de commande (6) présente un doigt d'indexation (9), apte à coopérer en fonction des positions sélectionnées du système de commande, avec des formes complémentaires (10a) que présente une platine support (10) dans laquelle sont montés pivotants les leviers (5) et (6). Le levier de chariot (5) coopère avec un axe de blocage (1 1) actionné par exemple par un actioneur assujetti à l'organe de commande de boîte. Le système de commande entraine angulairement l'ensemble des leviers (5) et (6) par l'intermédiaire de la biellette (2), sous l'effet de l'actionnement de l'actionneur, afin d'entraîner le chariot (1) sur le profil en came (3a) du doigt (3) pour engager le bossage (3b) dans une encoche de la roue dentée correspondant au verrouillage. Comme indiqué, le dispositif est maintenu en position point mort, 4ème, et marche arrière par le doigt d'indexation (9), malgré l'effort contraire exercé par le ressort de torsion (8). L'indexage devient moteur après environ 60 % de la course du système de commande. The spring (8) is mounted on the pivot axis (7), between the two levers (5) and (6), to allow simultaneous angular displacement of said levers or a displacement of one of the levers relative to the other in abutment position as will be indicated in the following description. The control system lever (6) has an indexing finger (9), able to cooperate according to the selected positions of the control system, with complementary shapes (10a) that a support plate (10) in which are pivoted the levers (5) and (6). The carriage lever (5) cooperates with a locking pin (1 1) actuated for example by an actuator secured to the box control member. The control system angularly drives all the levers (5) and (6) via the link (2), under the effect of the actuation of the actuator, in order to drive the carriage (1). ) on the cam profile (3a) of the finger (3) to engage the boss (3b) in a notch of the toothed wheel corresponding to the locking. As indicated, the device is maintained in the neutral position, 4th, and reverse by the indexing finger (9), despite the opposite force exerted by the torsion spring (8). Indexing becomes motor after approximately 60% of the control system stroke.
Un jeu, d'environ plus ou moins deux millimètres, est assuré au niveau de la liaison de la biellette avec le levier du système de commande (6) dans le sens de déplacement dudit levier afin de garantir l'absence d'efforts parasites sur le système de commande. A noter que le déverrouillage manuel du dispositif peut être effectué par tous moyens connus, en étant susceptibles d'être agencés pour être commandés depuis l'habitacle du véhicule.  A clearance of approximately plus or minus two millimeters is provided at the connection of the rod with the lever of the control system (6) in the direction of movement of said lever to ensure the absence of parasitic forces on the control system. Note that the manual unlocking of the device can be performed by any known means, being able to be arranged to be controlled from the passenger compartment of the vehicle.
Le dispositif selon l'invention est apte à fonctionner selon les positions possibles du système de commande à savoir point neutre, 4ème, marche arrière. On renvoie aux figures 4 à 1 1.  The device according to the invention is able to operate according to the possible positions of the control system namely neutral point, 4th, reverse. Referring to Figures 4 to 1 1.
Aux figures 4 et 5, les leviers (5) et (6) sont en position point neutre, le système de commande étant en position, point mort, 4ème, marche arrière. L'actionneur n'étant pas alimenté, un jeu de quelques millimètres, de l'ordre de 1mm, apparaît entre l'axe de blocage (1 1) et une partie de levier de chariot (5). In Figures 4 and 5, the levers (5) and (6) are in the neutral position, the control system being in position, neutral, 4th, reverse. The actuator is not powered, a game of a few millimeters, of the order of 1mm, appears between the locking pin (1 1) and a carriage lever portion (5).
Aux figures 6 et 7, les leviers (5) et (6) et le système de commande sont en position 4ème, l'actionneur n'est pas alimenté. Dans ce cas, et comme le montre la figure 6, le chariot (1) est reculé sur la piste (3a) du doigt de verrouillage (3). Le levier de chariot (6) est entraîné directement par le levier de système de commande (6). Le levier de système de commande (6), par l'intermédiaire du doigt (9) est indexé en position 4ème. Il en est par conséquent de même du levier de chariot (5) figure 7. In Figures 6 and 7, the levers (5) and (6) and the control system are in the 4th position, the actuator is not powered. In this case, and as shown in Figure 6, the carriage (1) is moved back on the track (3a) of the locking finger (3). The carriage lever (6) is driven directly by the control system lever (6). The control system lever (6), via the finger (9) is indexed in the 4th position. It is therefore the same with the carriage lever (5) Figure 7.
A la figure 8, les leviers (5) et (6) et le système de commande sont en position marche arrière. L'actionneur n'est pas alimenté de sorte que le chariot (1) est bloqué par l'axe de blocage (1 1). Le ressort (8) absorbe les déplacements relatifs entre le levier de système de commande (6) et le levier de chariot (5). Les leviers (5) et (6) sont indexés en position marche arrière par le doigt (9) dans la platine (10). In Figure 8, the levers (5) and (6) and the control system are in the reverse position. The actuator is not powered so that the carriage (1) is blocked by the locking pin (1 1). The spring (8) absorbs relative movements between the control system lever (6) and the carriage lever (5). The levers (5) and (6) are indexed in the reverse position by the finger (9) in the plate (10).
A la figure 9, le dispositif est représenté lorsque le doigt (3) n'est pas engagé dans une encoche de la roue dentée. Les leviers (5) et (6) sont en position P. Le système de commande est en position marche arrière. L'actionneur étant alimenté, le levier de système de commande (9) est toujours indexé en position marche arrière. Le ressort (8) absorbe le déplacement relatif entre le levier de système de commande (6) et le levier de chariot (5) comme indiqué précédemment. Dans ce cas, l'axe de blocage (1 1), commandé par l'actionneur, vient en appui sur le levier de chariot (5). In Figure 9, the device is shown when the finger (3) is not engaged in a notch of the toothed wheel. The levers (5) and (6) are in position P. The control system is in the reverse position. With the actuator powered, the control system lever (9) is always indexed in the reverse position. The spring (8) absorbs the relative displacement between the control system lever (6) and the carriage lever (5) as previously indicated. In this case, the locking pin (1 1), controlled by the actuator, bears on the carriage lever (5).
Aux figures 10 et 1 1 , le doigt (3) est engagé dans une des encoches de la roue dentée, les leviers (5) et (6) et le système de commande étant dans les positions indiquées précédemment pour la figure 9. Comme précédemment, l'actionneur étant alimenté, le levier de système de commande (6) est indexé en position marche arrière. Par contre, le doigt (3) étant engagé dans une encoche de la roue comme indiqué, l'axe de blocage (1 1) vient en appui sur le levier de chariot (5) lorsque l'alimentation de l'actionneur sera accouplé. Comme le montre la figure 12, pour le déverrouillage du dispositif en position (P) le levier de système de commande (6) est en contact direct avec une partie du levier de chariot (5). Dans ce but, le levier de chariot (5) présente, en débordement de sa base, un épaulement (5a) apte à être engagé dans une ouverture (6a) du levier de système de commande (6) pour créer une zone de contact direct (6b). In Figures 10 and 1 1, the finger (3) is engaged in one of the notches of the toothed wheel, the levers (5) and (6) and the control system being in the positions indicated above for Figure 9. As above the actuator being energized, the control system lever (6) is indexed in the reverse position. By against the finger (3) being engaged in a notch of the wheel as shown, the locking pin (1 1) bears on the carriage lever (5) when the supply of the actuator will be coupled. As shown in Figure 12, for unlocking the device in position (P) the control system lever (6) is in direct contact with a portion of the carriage lever (5). For this purpose, the carriage lever (5) has, in overflow of its base, a shoulder (5a) adapted to be engaged in an opening (6a) of the control system lever (6) to create a direct contact area (6b).
Les avantages ressortent bien de la description. The advantages are apparent from the description.

Claims

R E V E N D I C A T I O N S R E V E N D I C A T IO N S
-1- Dispositif de verrouillage en position parc d'une boîte de vitesses automatique pour véhicule automobile comprenant un chariot (1) assujetti à un système de commande commandée par une partie de la boite de vitesses pour être déplacé en translation par rapport à un doigt de verrouillage (3) apte à coopérer avec une couronne dentée que présente ladite boite de vitesses, ledit chariot (1) étant accouplé à des moyens actionnés par un actionneur pour être déplacé, si nécessaire, dans une position fixe du système de commande, caractérisé en ce que les moyens sont constitués par deux leviers compacts superposés (5) et (6) et montés pivotant par rapport à un même axe (7) à rencontre d'un ressort (8) de torsion monté sur ledit axe (9), l'un des leviers (5) étant accouplé au chariot, tandis que l'autre levier (6) est accouplé au système de commande. -1- Locking device park position of an automatic transmission for a motor vehicle comprising a carriage (1) subject to a control system controlled by a part of the gearbox to be moved in translation relative to a finger locking device (3) capable of cooperating with a ring gear provided by said gearbox, said carriage (1) being coupled to means actuated by an actuator to be moved, if necessary, in a fixed position of the control system, characterized in that the means consist of two superimposed compact levers (5) and (6) and pivotally mounted relative to the same axis (7) against a torsion spring (8) mounted on said axis (9), one of the levers (5) being coupled to the carriage, while the other lever (6) is coupled to the control system.
-2- Dispositif selon la revendication 1 , caractérisé en ce que le ressort (8) est monté sur l'axe pivot (7) entre les deux leviers (5) et (6) pour permettre un déplacement angulaire simultané desdits leviers ou de l'un des leviers par rapport à l'autre levier en position de butée. -2- Device according to claim 1, characterized in that the spring (8) is mounted on the pivot axis (7) between the two levers (5) and (6) to allow simultaneous angular displacement of said levers or the one of the levers relative to the other lever in abutment position.
-3- Dispositif selon l'une quelconque des revendications 1-2, caractérisé en ce que le levier de système de commande (6) présente un doigt d'indexation apte à coopérer, en fonction d'une position sélectionnée du système de commande, avec des formes complémentaires que présente une platine support (10) dans laquelle sont montés pivotant ledit levier de système de commande (6), et le levier de chariot (5). -4- Dispositif selon l'une quelconque des revendications 1-3, caractérisé en ce que le levier de chariot (5) coopère avec un axe de blocage (1 1) actionné par l'actionneur. -5- Dispositif selon l'une quelconque des revendications 1-4, caractérisé en ce que les fonctions sélectionnés du système de commande sont le point neutre, la 4ème, la marche arrière. -3- Device according to any one of claims 1-2, characterized in that the lever control system (6) has an indexing finger adapted to cooperate, depending on a selected position of the control system, with complementary shapes that has a support plate (10) in which are pivotally mounted said control system lever (6), and the carriage lever (5). -4- Device according to any one of claims 1-3, characterized in that the carriage lever (5) cooperates with a locking pin (1 1) actuated by the actuator. -5- Device according to any one of claims 1-4, characterized in that the selected functions of the control system are the neutral point, the 4th, the reverse.
-6- Dispositif selon l'une quelconque des revendications 1-5, caractérisé en ce que lorsque l'ensemble des leviers de système de commande (6) et de chariot (5) est positionné en position point neutre, le système de commande en position point neutre/4ème. /marche arrière, et l'actionneur non alimenté, un jeu de quelques millimètres apparaît entre l'axe de blocage (1 1) et le levier de chariot (5). -6- Device according to any one of claims 1-5, characterized in that when all the levers of control system (6) and carriage (5) is positioned in neutral position, the control system in neutral / 4th point position. / reverse, and the actuator not powered, a game of a few millimeters appears between the locking pin (1 1) and the carriage lever (5).
-7- Dispositif selon l'une quelconque des revendications 1-5, caractérisé en ce que lorsque l'ensemble des leviers de système de commande (6) et de chariot (5) est en position 4ème, le système de commande en position 4ème et l'actionneur non alimenté, le chariot (1) recule par rapport au doigt de verrouillage (3), le levier de chariot (5) étant entraîné angulairement directement par le levier de système de commande (6) par l'intermédiaire du ressort (8), lesdits leviers (5) et (6) étant indexés en position 4ème dans la platine support (10). -8- Dispositif selon l'une quelconque des revendications 1-5, caractérisé en ce que lorsque l'ensemble des leviers de système de commande (6) et de chariot (5) est en position marche arrière, le système de commande en position marche arrière, et l'actionneur non alimenté, le levier de chariot (5) est bloqué par l'axe de blocage (1 1) , tandis que le levier de système de commande (6) est déplacé angulairement à rencontre du ressort (8) pour être indexé en position marche arrière dans la platine. -7- Device according to any one of claims 1-5, characterized in that when all the levers of control system (6) and carriage (5) is in the 4th position, the control system in the 4th position and the actuator not powered, the carriage (1) moves back relative to the locking finger (3), the carriage lever (5) being driven angularly directly by the control system lever (6) via the spring (8), said levers (5) and (6) being indexed in the 4th position in the support plate (10). -8- Device according to any one of claims 1-5, characterized in that when all the levers of control system (6) and carriage (5) is in the reverse position, the control system in position reversing, and the actuator not powered, the carriage lever (5) is blocked by the locking pin (1 1), while the system lever of control (6) is moved angularly against the spring (8) to be indexed in the reverse position in the plate.
-9- Dispositif selon l'une quelconque des revendications 1-5, caractérisé en ce que lorsque l'ensemble des leviers de système de commande (6) et de chariot (5) est en position P, le doigt de verrouillage non engagé dans une encoche de la roue dentée, le système de commande en position Marche Arrière et l'actionneur alimenté, le ressort (8) absorbe le déplacement entre le levier de système de commande (6) indexé en position marche arrière dans la platine (10), et le levier de chariot (5) en appui sur l'axe de blocage (1 1) déplacé par ledit actionneur. -9- Device according to any one of claims 1-5, characterized in that when all the levers of control system (6) and carriage (5) is in position P, the locking pin not engaged in a notch of the toothed wheel, the control system in the Reverse position and the powered actuator, the spring (8) absorbs the movement between the control lever (6) indexed in the reverse position in the plate (10) , and the carriage lever (5) bearing on the locking pin (1 1) moved by said actuator.
-10- Dispositif selon l'une quelconque des revendications 1-5, caractérisé en ce que lorsque l'ensemble des leviers de système de commande (6) et le chariot (5) est en position P, le doigt de verrouillage engagé dans une encoche de la couronne dentée, le système de commande en position marche arrière, et l'actionneur alimenté, le levier de système de commande (6) est indexé en position marche arrière dans la platine (10) et le chariot (1) est ramené en avant sur le doigt de verrouillage (3) sous l'effet de déplacement du levier de chariot (5) en appui avec l'axe de blocage (1 1) lors de l'arrêt de l'alimentation de l'actionneur. -10- Device according to any one of claims 1-5, characterized in that when all of the control system levers (6) and the carriage (5) is in position P, the locking finger engaged in a notch of the ring gear, the control system in the reverse position, and the actuator powered, the control system lever (6) is indexed in the reverse position in the plate (10) and the carriage (1) is brought back forward on the locking finger (3) under the effect of movement of the carriage lever (5) in abutment with the locking pin (1 1) when stopping the supply of the actuator.
-1 1- Dispositif selon l'une quelconque des revendications 1-10, caractérisé en ce que le levier du chariot (5) présente en débordement de sa base un épaulement engagé dans une ouverture du levier de système de commande (6) pour créer une zone de contact direct. -1- Device according to any one of claims 1-10, characterized in that the lever of the carriage (5) has an overflow of its base a shoulder engaged in an opening of the control system lever (6) to create a zone of direct contact.
EP12750435.5A 2011-07-22 2012-07-20 Device for locking an automatic gearbox of a motor vehicle in the park position Withdrawn EP2734752A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1156677A FR2978223B1 (en) 2011-07-22 2011-07-22 LOCKING DEVICE IN THE PARC POSITION OF AN AUTOMATIC GEARBOX FOR A MOTOR VEHICLE
PCT/FR2012/051728 WO2013014377A1 (en) 2011-07-22 2012-07-20 Device for locking an automatic gearbox of a motor vehicle in the park position

Publications (1)

Publication Number Publication Date
EP2734752A1 true EP2734752A1 (en) 2014-05-28

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EP12750435.5A Withdrawn EP2734752A1 (en) 2011-07-22 2012-07-20 Device for locking an automatic gearbox of a motor vehicle in the park position

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US (1) US9428158B2 (en)
EP (1) EP2734752A1 (en)
BR (1) BR112014001578A2 (en)
FR (1) FR2978223B1 (en)
WO (1) WO2013014377A1 (en)

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CA2841064C (en) 2011-07-06 2016-07-12 Nippon Steel & Sumitomo Metal Corporation Hot-dip galvanized cold-rolled steel sheet and process for producing same

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Publication number Priority date Publication date Assignee Title
US2839941A (en) * 1956-08-13 1958-06-24 Deere Mfg Co Transmission and control therefor
US2974752A (en) * 1957-09-03 1961-03-14 Gen Motors Corp Positive parking brake
KR970075502A (en) * 1996-05-15 1997-12-10 박병재 Parking gear for automatic transmission
US6125983A (en) * 1997-12-01 2000-10-03 Chrysler Corporation Electric parking sprag
JP3053384B2 (en) * 1998-09-09 2000-06-19 本田技研工業株式会社 Electric parking lock device
FR2799710B1 (en) * 1999-10-19 2001-12-21 Renault PARKING BRAKE DEVICE FOR A MOTOR VEHICLE EQUIPPED WITH AN AUTOMATIC GEARBOX, AND MOTOR VEHICLE EQUIPPED WITH SUCH A DEVICE
FR2910416B1 (en) * 2006-12-22 2009-01-23 Renault Sas SECTOR OF A PARKING BRAKE DEVICE.
DE102008006398A1 (en) * 2008-01-28 2009-07-30 Zf Friedrichshafen Ag Emergency unlocking device for parking brake
JP2011084187A (en) * 2009-10-16 2011-04-28 Suzuki Motor Corp Parking lock device of automatic transmission
FR2956180A1 (en) * 2010-02-05 2011-08-12 Renault Sas Internal control lever for park braking device of e.g. automated, robotized, automatic or manual gearbox, has position element with notched zones cooperating with hardness test units to define positions of parking finger

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Title
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See also references of WO2013014377A1 *

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US9428158B2 (en) 2016-08-30
FR2978223B1 (en) 2014-01-24
FR2978223A1 (en) 2013-01-25
US20140197005A1 (en) 2014-07-17
WO2013014377A1 (en) 2013-01-31
BR112014001578A2 (en) 2017-02-21

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