WO2016116674A1 - Disengageable hinge assembly for the seat of a motor vehicle. - Google Patents
Disengageable hinge assembly for the seat of a motor vehicle. Download PDFInfo
- Publication number
- WO2016116674A1 WO2016116674A1 PCT/FR2015/053680 FR2015053680W WO2016116674A1 WO 2016116674 A1 WO2016116674 A1 WO 2016116674A1 FR 2015053680 W FR2015053680 W FR 2015053680W WO 2016116674 A1 WO2016116674 A1 WO 2016116674A1
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- WO
- WIPO (PCT)
- Prior art keywords
- flange
- hinge assembly
- rotation
- assembly according
- ring
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/20—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being tiltable, e.g. to permit easy access
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/2236—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable with a transversal pin displaced by a slot or a cam along a predetermined path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/225—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/225—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms
- B60N2/2252—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms in which the central axis of the gearing lies inside the periphery of an orbital gear, e.g. one gear without sun gear
Definitions
- the present invention generally relates to articulation assemblies for adjusting the inclination between the backrest and the seat of a motor vehicle seat, and aims in particular those of "continuous" type allowing a fine adjustment of this inclination.
- Such a "continuous" articulation assembly which is described, for example, in the French application FR 2743032, conventionally comprises:
- a second flange connected in rotation with an internal toothing having a second axis parallel and remote from said first axis, said first and second flanges being provided to be respectively fixed to the seat and back of the seat;
- first and second flanges being provided to be respectively fixed to the seat and back of the seat or vice versa;
- an eccentric mechanism connecting said external toothing to an internal toothing having a second axis parallel and slightly spaced from said first axis, and having a number of teeth greater than at least one tooth to that of said external toothing
- Disengagement means comprising a disengagement member actuatable in rotation via a control lug and release claws provided with teeth and mounted to slide radially along corresponding impressions provided on the second flange.
- the rotation of said disengaging member causes said disengagement grains in radial translation along said indentations and passes said articulation assembly of a locked configuration in which teeth located on the disengagement grains bite the peripheral notched strip of a cup housing the inner toothing to rotate said inner toothing and said second flange to an unlocked configuration wherein said teeth are away from the toothed belt so that said toothing and said second flange are disengaged in rotation.
- this type of articulation assembly can thus easily pass from an operating mode of the type "Continuous” in which the user can fine-tune the angle of inclination between the seat and the back of the seat, to a “discontinuous" type of operating mode in which the two flanges can rotate freely around each other so that the user can do vary this angle of inclination rapidly, in particular to allow access to the rear seats (APA) or to put a tablet (MET) of this folder.
- APA rear seats
- MET tablet
- the hinge assembly ironing in its locked configuration as soon as the control tab is released, the user is therefore forced to maintain the actuated control tab until the file reaches the desired inclination.
- the present invention therefore aims to provide a more functional disengageable joint assembly ensuring both a fine adjustment of the angle of inclination between the seat and the seat back, and a quick adjustment to a tilt allowing access in the rear seats of the vehicle or a shelf tablet.
- a detachable joint assembly for a motor vehicle seat comprising:
- first and second flanges being provided to be respectively fixed to the seat and back of the seat or vice versa;
- an eccentric mechanism connecting said external toothing to an internal toothing having a second axis parallel and slightly spaced from said first axis, and having a number of teeth greater than at least one tooth to that of said external toothing
- Disengagement means comprising a release member operable in rotation and at least one disengagement grain radially sliding, the rotation of said disengaging member driving the at least said clutch release in radial translation to pass said hinge assembly of a locked configuration in which the at least said disengagement grain rotates said inner toothing and said second flange, at least a first unlocked configuration in which said internal toothing and said second flange are disengaged in rotation;
- each at least one clutching grain comprises a nipple able to circulate, in said first unlocked configuration, along a corresponding semi-closed first guide track provided on said second flange and extending over an angular sector. predetermined.
- the guide track extends only over a predetermined angular sector also makes it possible to limit the rotation of the second flange with respect to the first flange in the unlocked configuration (the grain abutting against the closed end of the track) and therefore to prevent further pivoting of the seat backrest when the latter reaches a predetermined inclination corresponding for example to a position of access to the rear seats (APA) or tabling (MET).
- Such automatic locking of the backrest allows APA position to provide a fulcrum assisting the user when accessing the rear seats, while it allows the MET position to prevent the folder from compressing the padding of the seat.
- hinge assembly taken alone or in combination:
- said first guide track extends over an angular sector comprised between 30 and 45 °; said articulation assembly has a second unlocked configuration in which the stud of each at least said release seed is able to circulate along a second corresponding guide track provided on said second flange and extending over an angular sector. predetermined different from that of said first track;
- said second guide track extends over an angular sector between 75 and 90 °;
- said clutch member operable in rotation is constituted by a ring on the outer edge of which the said at least one clutching grain rests, said ring comprising at least one angular portion whose outer diameter is smaller than the nominal outside diameter of this ring and on which rests the at least said disengagement grain in said first unlocked configuration;
- said ring comprises at least one other angular portion whose outside diameter is smaller than that of said angular portion and on which the at least said release grain rests in said second unlocked configuration;
- Said disengagement means comprise resilient biasing means continuously urging the at least said clutch slidable to the axis of said ring;
- Said disengagement means further comprise an intermediate disk disposed between said flanges and comprising an axial sleeve carrying said internal toothing, said at least one disengaging grain being slidably mounted along at least one corresponding indentation formed on said intermediate disk;
- Said disengagement means comprises two disengagement grains slidably mounted along two symmetrical cavities with respect to the axis of said intermediate disk; and or
- the at least one disengagement bead comprises teeth capable of cooperating in said locked configuration with a notched annular rim carried by said second flange, so as to link in rotation said internal toothing and said second flange.
- FIG. 1 shows a cross sectional view of the hinge assembly according to the invention occupying its locking configuration
- FIG. 2 is a front view of the hinge assembly of Figure 1 in its locking configuration, on which some elements have been omitted to facilitate understanding of the invention;
- Figures 3 and 4 are similar to Figures 1 and 2 but illustrate the hinge assembly according to the invention in its tablet configuration;
- Figures 5 and 6 are similar to Figures 1 and 2 but illustrate the hinge assembly according to the invention in its rear access configuration
- FIG. 7 is a front view of the tablet control member that comprises the hinge assembly according to the invention.
- FIGS. 8A, 8B and 8C are respectively views of the inner face, the edge and the outer face of the second flange of the hinge assembly according to the invention.
- the hinge assembly 1 shown in the figures is integrated into a motor vehicle seat (not shown) and allows to adjust the relative inclination between the backrest and the seat of this seat.
- This hinge assembly 1 comprises a first flange 2 and a second flange 3 respectively fixed to the backrest D and seat A of the seat or vice versa, preferably by welding.
- the peripheral flanges 2A, 3A of the two flanges 2 and 3 are held contiguous to each other by means of an annular retaining ring not shown in the figures.
- the flange 2 has a central circular opening 21 delimited by an annular wafer fixed by welding on the side wall 41 of a cylindrical sheath 4 passing through this opening 21.
- This sleeve 4 has at its outer end protruding from the flange 2, a bottom wall 42 in which is formed an opening 43 centered on the axis of the flange 3.
- the sleeve 4 also comprises a flange 44 extending radially from the inner end of the side wall 41, and bearing an external toothing 45.
- the flange 3 which is shown alone in FIGS. 8A to 8C, has an axis parallel and slightly distant from that of the flange 2.
- This annular ring 32 is provided on its inner periphery with a notched band 33 extending over its entire circumference.
- the latter also has on its inner face two pairs of two guiding tracks 35, 36 in an arc of circle, the two pairs of tracks being disposed symmetrically to each other with respect to the axis of the flange 3.
- Each guide track 35 extends near the annular ring 32 about 90 °. It is delimited by two joined ribs 35A, 35B at one of their ends.
- Each guide track 36 is contiguous to the track 35 but extends over a smaller angular sector of about 45 °.
- the flange 3 finally comprises an abutment pin 39 extending from its inner face 3C and in an axial direction.
- the hinge assembly 1 comprises an intermediate disc 5, a clutch ring 6, two parallelepiped release claws 7, and an eccentric control member 8.
- the intermediate disk 5 comprises a peripheral annular ring 51 extending from its oriented face toward the flange 3.
- the inner face of this annular ring 51 is pivotally fitted on the outer face of the annular ring 32 of the flange 3, so that that the intermediate disc 5 and the flange 3 are coaxial and can freely rotate relative to each other.
- This intermediate disc 5 has a central circular opening 53 through which the side wall 41 of the cylindrical sleeve 4 and whose diameter is slightly greater than that of this side wall 41.
- the disc 5 is furthermore interposed between the flange 2 and the flange 44 the sheath 4 which prevent it from translating axially.
- the face oriented in the direction of the flange 3, also has two rectangular guiding cavities 56, symmetrical to each other with respect to the axis of the intermediate disc 5, and extending between the annular peripheral ring 51 and the sleeve axial 54.
- the disengaging ring 6 has a central circular opening 61 pivotally fitted on the outer face of the axial sleeve 54 of the intermediate disc 5.
- It comprises two angular portions 62 running about 30 °, symmetrical to each other with respect to its axis, and having an outside diameter D 2 smaller than the nominal outside diameter Di.
- the clutch ring 6 also comprises two other angular portions 63, symmetrical to one another with respect to its axis, and extending in the extension of the angular portions 62 by about 30 °. These two angular portions 63 have an outside diameter D 3 still smaller than the outside diameter D 2 of the angular portions 62.
- the clutch ring 6 further comprises two pins 64, 65 arcuate section and extending symmetrically from one another relative to its axis.
- the first pin 64 passes through the flange 3 at the control light 37, while the second 65 passes through the same flange 2 at the control light 38.
- Each of the parallelepiped release claws 7 is disposed between the intermediate disk 5 and the flange 3, being partially received inside a rectangular cavity 56, so that it can slide radially along this cavity.
- Elastic return means constantly urge the grains 7 to slide towards the center of the clutch ring 6.
- Each grain 7, which rests by its inner face on the outer edge of this clutch ring 6, has a guide pin 71 adapted to flow along a guide track 35 or 36.
- the outer faces of these grains 7 have teeth 72 capable of cooperating with the peripheral notched strip 33 of the annular ring 32.
- the eccentric control member 8 comprises a cylindrical hub 81, centered on the axis of the first flange 2, which passes through the central circular opening 31 of the flange 3 and is housed partially in the sleeve 4.
- notched disc 83 housing an eccentric mechanism which extends radially from the outer end of the hub 81. Centered on the axis of the second flange 3, this notched disc 83 is further housed in the bore 34 flange 3.
- the eccentric control member 8 also has a recess 85 passing through the hub 81 and the disc 83, and provided for receiving a drive rod 86 connected to a control wheel 88.
- the hinge assembly 1 according to the invention also comprises two control members, respectively tablet (MET) 9 and access to the rear seats (APA).
- the control unit MET 9 shown frontally in FIG. 7 has a circular opening 92 through which it is pivotally mounted on the drive rod 86 between the flange 3 and the wheel 88. It also comprises an arcuate light. of circle 93 concentric with the opening 92 and traversed by the first pin 64 of the clutch ring 6.
- This control member MET 9 further comprises an arm 94 extending radially and connected to a tablet making handle not shown in the figures,
- control member APA (not visible in the figures) is secured to the second pin 65 of the clutch ring 6.
- This articulation assembly has a first locking configuration in which the flange 3 and the intermediate disk 5 are integral in rotation.
- the hinge assembly 1 is then in a first unlocked configuration of tablet in which the flange 2 connected to the seat back can freely pivot backwards relative to the flange 3 connected to the seat on an angular sector approximately 90 ° corresponding to that of the guide tracks 35 (the pins 71 which circulate along these guide tracks 35 then abut against their closed ends, which prevents the further pivoting of the flange 2).
- the hinge assembly 1 is then in a second unlocked configuration of access to the rear seats in which the flange 2 connected to the seat back can freely pivot backwards by compared to the flange 3 bonded to the seat on an angular sector of approximately 45 ° corresponding to that of the guide tracks 36 (the pins 71 sliding along these guide tracks 36 then abut against their closed ends, which prevents continued flange 2).
- some elements of the hinge assembly according to the invention can be shaped differently. This is particularly the case of clutch grains whose shape, number and layout can be modified without departing from the scope of the invention.
- the number of guide tracks and / or their angular extent can vary.
- the first guide track extends over an angular sector between 30 and 45 °, while the second extends over an angular sector between 75 and 90 °.
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention relates to a disengageable hinge assembly comprising a first end plate (2) rotatably connected with outer teeth (45), a second end plate (3), a control unit (8) for rotating a cam mechanism and rotating said outer teeth (45) in said inner teeth (55), a rotatably actuatable disengagement member (6) and at least one radially slidably mounted disengagement bush (7), the rotation of said disengagement member (6) radially translating the bush (7) to shift the hinge assembly from a locked configuration wherein the bush (7) rotatably connects said inner teeth (55) and said second end plate (3), to a first unlocked configuration wherein said inner teeth (55) and said second end plate (3) are disconnected, each bush (7) comprising a lug (71) capable of moving in said first unlocked configuration along a first semi-closed guide track provided on said second end plate (3) and extending across a predetermined angular sector.
Description
ENSEMBLE D'ARTICULATION DEBRAYABLE POUR SIEGE DE VEHICULE AUTOMOBILE. DEBRAYABLE JOINT ASSEMBLY FOR MOTOR VEHICLE SEAT.
Domaine de l'invention Field of the invention
La présente invention concerne d'une manière générale les ensembles d'articulation permettant de régler l'inclinaison entre le dossier et l'assise d'un siège de véhicule automobile, et vise en particulier ceux de type « continu » autorisant un réglage fin de cette inclinaison. The present invention generally relates to articulation assemblies for adjusting the inclination between the backrest and the seat of a motor vehicle seat, and aims in particular those of "continuous" type allowing a fine adjustment of this inclination.
Arrière-plan de l'invention Background of the invention
Un tel ensemble d'articulation « continu » qui est décrit par exemple dans la demande française FR 2743032, comporte classiquement : Such a "continuous" articulation assembly which is described, for example, in the French application FR 2743032, conventionally comprises:
- un premier flasque lié en rotation avec une denture extérieure présentant un premier axe ; a first flange bound in rotation with an external toothing having a first axis;
- un deuxième flasque lié en rotation avec une denture intérieure présentant un deuxième axe parallèle et distant dudit premier axe, lesdits premier et deuxième flasques étant prévus pour être fixés respectivement à l'assise et au dossier du siège ; - A second flange connected in rotation with an internal toothing having a second axis parallel and remote from said first axis, said first and second flanges being provided to be respectively fixed to the seat and back of the seat;
- un mécanisme à excentrique reliant lesdites dentures intérieure et extérieure, et an eccentric mechanism connecting said inner and outer teeth, and
- un organe de commande pour faire tourner le mécanisme à excentrique et entraîner la rotation de la denture extérieure dans la denture intérieure de sorte à faire varier la position angulaire relative entre ladite assise et ledit dossier. - A control member for rotating the eccentric mechanism and cause the rotation of the outer toothing in the internal toothing to vary the relative angular position between said seat and said backrest.
Ce type d'articulation qui autorise un réglage fin de l'angle d'inclinaison entre l'assise et le dossier du siège, présente toutefois l'inconvénient d'empêcher l'utilisateur de faire passer rapidement le dossier de sa position relevée vers une position partiellement rabattue permettant l'accès aux places arrière du véhicule ou vers une position de mise en tablette offrant un volume de chargement optimisé.
Afin de palier à cet inconvénient, la demande de brevet française FR 3003 818 propose un ensemble d'articulation débrayable pour siège de véhicule automobile comportant : This type of articulation which allows a fine adjustment of the angle of inclination between the seat and the seat back, however has the disadvantage of preventing the user to quickly move the folder from its raised position to a partially folded position allowing access to the rear seats of the vehicle or to a tablet position providing an optimized loading volume. In order to overcome this drawback, the French patent application FR 3003 818 proposes a disengageable joint assembly for a motor vehicle seat comprising:
- un premier flasque lié en rotation avec une denture extérieure présentant un premier axe ; a first flange bound in rotation with an external toothing having a first axis;
- un deuxième flasque, lesdits premier et deuxième flasques étant prévus pour être fixés respectivement à l'assise et au dossier du siège ou vice versa ; - A second flange, said first and second flanges being provided to be respectively fixed to the seat and back of the seat or vice versa;
- un mécanisme à excentrique reliant ladite denture extérieure à une denture intérieure présentant un deuxième axe parallèle et légèrement distant dudit premier axe, et comportant un nombre de dents supérieur d'au moins une dent à celui de ladite denture extérieure, an eccentric mechanism connecting said external toothing to an internal toothing having a second axis parallel and slightly spaced from said first axis, and having a number of teeth greater than at least one tooth to that of said external toothing,
- un organe de commande pour faire tourner ledit mécanisme à excentrique et entraîner la rotation de ladite denture extérieure dans ladite denture intérieure ; et a control member for rotating said eccentric mechanism and causing the rotation of said external toothing in said internal toothing; and
- des moyens de débrayage comportant un organe de débrayage actionnable en rotation via une patte de commande et des grains de débrayage munis de dents et montés coulissants radialement le long d'empreintes correspondantes prévues sur le deuxième flasque. - Disengagement means comprising a disengagement member actuatable in rotation via a control lug and release claws provided with teeth and mounted to slide radially along corresponding impressions provided on the second flange.
La rotation dudit organe de débrayage entraine lesdits grains de débrayage en translation radiale le long desdites empreintes et fait passer ledit ensemble d'articulation d'une configuration verrouillée dans laquelle des dents situées sur les grains de débrayage mordent la bande crantée périphérique d'une coupelle logeant la denture intérieure pour lier en rotation ladite denture intérieure et ledit deuxième flasque, à une configuration déverrouillée dans laquelle lesdites dents sont à l'écart de la bande crantée de sorte que ladite denture intérieure et ledit deuxième flasque sont désolidarisés en rotation. The rotation of said disengaging member causes said disengagement grains in radial translation along said indentations and passes said articulation assembly of a locked configuration in which teeth located on the disengagement grains bite the peripheral notched strip of a cup housing the inner toothing to rotate said inner toothing and said second flange to an unlocked configuration wherein said teeth are away from the toothed belt so that said toothing and said second flange are disengaged in rotation.
Grâce à la présence de ces moyens de débrayage qui permettent d'établir ou de supprimer la liaison en rotation entre la denture intérieure et le deuxième flasque, ce type d'ensemble d'articulation peut ainsi passer facilement d'un mode de fonctionnement de type « continu » dans lequel l'utilisateur peut effectuer un réglage fin de
l'angle d'inclinaison entre l'assise et le dossier du siège, à un mode de fonctionnement de type « discontinu » dans lequel les deux flasques peuvent tourner librement l'un autour de l'autre de sorte que l'utilisateur peut faire varier de façon rapide cet angle d'inclinaison, notamment pour autoriser l'accès aux places arrière (APA) ou pour réaliser une mise en tablette (MET) de ce dossier. Thanks to the presence of these disengaging means which make it possible to establish or eliminate the connection in rotation between the internal toothing and the second flange, this type of articulation assembly can thus easily pass from an operating mode of the type "Continuous" in which the user can fine-tune the angle of inclination between the seat and the back of the seat, to a "discontinuous" type of operating mode in which the two flanges can rotate freely around each other so that the user can do vary this angle of inclination rapidly, in particular to allow access to the rear seats (APA) or to put a tablet (MET) of this folder.
Toutefois, l'ensemble d'articulation repassant dans sa configuration verrouillée dès que la patte de commande est relâchée, l'utilisateur est donc contraint de maintenir cette patte de commande actionnée jusqu'à ce que le dossier parvienne à l'inclinaison souhaitée. However, the hinge assembly ironing in its locked configuration as soon as the control tab is released, the user is therefore forced to maintain the actuated control tab until the file reaches the desired inclination.
Objet et résumé de l'invention Object and summary of the invention
La présente invention vise donc à proposer un ensemble d'articulation débrayable plus fonctionnel assurant à la fois un réglage fin de l'angle d'inclinaison entre l'assise et le dossier du siège, et un réglage rapide vers une inclinaison permettant l'accès aux places arrière du véhicule ou une mise en tablette du dossier. The present invention therefore aims to provide a more functional disengageable joint assembly ensuring both a fine adjustment of the angle of inclination between the seat and the seat back, and a quick adjustment to a tilt allowing access in the rear seats of the vehicle or a shelf tablet.
Elle propose à cet effet, un ensemble d'articulation débrayable pour siège de véhicule automobile comportant : It proposes for this purpose, a detachable joint assembly for a motor vehicle seat comprising:
- un premier flasque lié en rotation avec une denture extérieure présentant un premier axe ; a first flange bound in rotation with an external toothing having a first axis;
- un deuxième flasque, lesdits premier et deuxième flasques étant prévus pour être fixés respectivement à l'assise et au dossier du siège ou vice versa ; - A second flange, said first and second flanges being provided to be respectively fixed to the seat and back of the seat or vice versa;
- un mécanisme à excentrique reliant ladite denture extérieure à une denture intérieure présentant un deuxième axe parallèle et légèrement distant dudit premier axe, et comportant un nombre de dents supérieur d'au moins une dent à celui de ladite denture extérieure, an eccentric mechanism connecting said external toothing to an internal toothing having a second axis parallel and slightly spaced from said first axis, and having a number of teeth greater than at least one tooth to that of said external toothing,
- un organe de commande pour faire tourner ledit mécanisme à excentrique et entrainer la rotation de ladite denture extérieure dans ladite denture intérieure a control member for rotating said eccentric mechanism and causing rotation of said external toothing in said internal toothing
- des moyens de débrayage comportant un organe de débrayage actionnable en rotation et au moins un grain de débrayage
monté coulissant radialement, la rotation dudit organe de débrayage entraînant le au moins dit grain de débrayage en translation radiale pour faire passer ledit ensemble d'articulation d'une configuration verrouillée dans laquelle le au moins dit grain de débrayage lie en rotation ladite denture intérieure et ledit deuxième flasque, à au moins une première configuration déverrouillée dans laquelle ladite denture intérieure et ledit deuxième flasque sont désolidarisés en rotation ; - Disengagement means comprising a release member operable in rotation and at least one disengagement grain radially sliding, the rotation of said disengaging member driving the at least said clutch release in radial translation to pass said hinge assembly of a locked configuration in which the at least said disengagement grain rotates said inner toothing and said second flange, at least a first unlocked configuration in which said internal toothing and said second flange are disengaged in rotation;
caractérisé en ce que chaque au moins dit grain de débrayage comporte un téton apte à circuler, dans ladite première configuration déverrouillée, le long d'une première piste de guidage correspondante semi-fermée prévue sur ledit deuxième flasque et s'étendant sur un secteur angulaire prédéterminé. characterized in that each at least one clutching grain comprises a nipple able to circulate, in said first unlocked configuration, along a corresponding semi-closed first guide track provided on said second flange and extending over an angular sector. predetermined.
La présence de la piste de guidage dans laquelle circule le téton du grain de débrayage permet de retenir radialement ce grain de sorte que l'utilisateur n'a plus besoin de maintenir actionné l'organe de commande entraînant la rotation de l'organe de débrayage pour que l'ensemble d'articulation demeure dans sa configuration de déverrouillage. The presence of the guide track in which the stud of the disengaging grain circulates makes it possible to retain this grain radially so that the user no longer needs to keep actuating the control member causing rotation of the disengagement member so that the hinge assembly remains in its unlocking configuration.
Le fait que la piste de guidage s'étende seulement sur un secteur angulaire prédéterminé permet en outre de limiter la rotation du deuxième flasque par rapport au premier flasque dans la configuration déverrouillée (le grain venant buter contre l'extrémité fermée de la piste) et donc d'empêcher la poursuite du pivotement du dossier du siège lorsque ce dernier atteint une inclinaison prédéterminée correspondant par exemple à une position d'accès aux places arrière (APA) ou de mise en tablette (MET). The fact that the guide track extends only over a predetermined angular sector also makes it possible to limit the rotation of the second flange with respect to the first flange in the unlocked configuration (the grain abutting against the closed end of the track) and therefore to prevent further pivoting of the seat backrest when the latter reaches a predetermined inclination corresponding for example to a position of access to the rear seats (APA) or tabling (MET).
Un tel blocage automatique du dossier permet en position APA de fournir un point d'appui assistant l'utilisateur lors de l'accès aux places arrière, tandis qu'il permet en position MET d'éviter que le dossier ne vienne comprimer la matelassure de l'assise. Such automatic locking of the backrest allows APA position to provide a fulcrum assisting the user when accessing the rear seats, while it allows the MET position to prevent the folder from compressing the padding of the seat.
Selon des caractéristiques préférées de l'ensemble d'articulation, prises seules ou en combinaison : According to preferred features of the hinge assembly, taken alone or in combination:
- ladite première piste de guidage s'étend sur un secteur angulaire compris entre 30 et 45° ;
- ledit ensemble d'articulation présente une seconde configuration déverrouillée dans laquelle le téton de chaque au moins dit grain de débrayage est apte à circuler le long d'une seconde piste de guidage correspondante prévue sur ledit deuxième flasque et s'étendant sur un secteur angulaire prédéterminé différent de celui de la dite première piste ; said first guide track extends over an angular sector comprised between 30 and 45 °; said articulation assembly has a second unlocked configuration in which the stud of each at least said release seed is able to circulate along a second corresponding guide track provided on said second flange and extending over an angular sector. predetermined different from that of said first track;
- ladite seconde piste de guidage s'étend sur un secteur angulaire compris entre 75 et 90° ; said second guide track extends over an angular sector between 75 and 90 °;
- ledit organe de débrayage actionnable en rotation est constitué d'un anneau sur la tranche extérieure duquel repose le au moins dit grain de débrayage, ledit anneau comprenant au moins une portion angulaire dont le diamètre extérieur est inférieur au diamètre extérieur nominal de cet anneau et sur laquelle repose le au moins dit grain de débrayage dans ladite première configuration déverrouillée ; said clutch member operable in rotation is constituted by a ring on the outer edge of which the said at least one clutching grain rests, said ring comprising at least one angular portion whose outer diameter is smaller than the nominal outside diameter of this ring and on which rests the at least said disengagement grain in said first unlocked configuration;
- ledit anneau comprend au moins une autre portion angulaire dont le diamètre extérieur est inférieur à celui de ladite portion angulaire et sur laquelle repose le au moins dit grain de débrayage dans ladite seconde configuration déverrouillée ; said ring comprises at least one other angular portion whose outside diameter is smaller than that of said angular portion and on which the at least said release grain rests in said second unlocked configuration;
- lesdits moyens de débrayage comportent des moyens élastiques de rappel sollicitant en permanence le au moins dit grain de débrayage à coulissement vers l'axe dudit anneau ; - Said disengagement means comprise resilient biasing means continuously urging the at least said clutch slidable to the axis of said ring;
- lesdits moyens de débrayage comportent en outre un disque intermédiaire disposé entre lesdits flasques et comprenant un manchon axial portant ladite denture intérieure, ledit au moins un grain de débrayage étant monté coulissant le long d'au moins une empreinte correspondante ménagée sur ledit disque intermédiaire ; - Said disengagement means further comprise an intermediate disk disposed between said flanges and comprising an axial sleeve carrying said internal toothing, said at least one disengaging grain being slidably mounted along at least one corresponding indentation formed on said intermediate disk;
- lesdits moyens de débrayage comporte deux grains de débrayage montés coulissants le long de deux empreintes symétriques l'une de l'autre par rapport à l'axe dudit disque intermédiaire ; et/ou - Said disengagement means comprises two disengagement grains slidably mounted along two symmetrical cavities with respect to the axis of said intermediate disk; and or
- le au moins dit grain de débrayage comporte des dents apte à coopérer dans ladite configuration verrouillée avec une couronne annulaire crantée portée par ledit deuxième flasque, de sorte à lier en rotation ladite denture intérieure et ledit deuxième flasque.
Brève description des dessins the at least one disengagement bead comprises teeth capable of cooperating in said locked configuration with a notched annular rim carried by said second flange, so as to link in rotation said internal toothing and said second flange. Brief description of the drawings
L'exposé de l'invention sera maintenant poursuivi par la description détaillée d'un exemple de réalisation, donnée ci-après à titre illustratif mais non limitatif, en référence aux dessins annexés, sur lesquels : The description of the invention will now be continued by the detailed description of an exemplary embodiment, given below by way of illustration but without limitation, with reference to the appended drawings, in which:
- la figure 1 représente une vue en coupe transversale de l'ensemble d'articulation selon l'invention occupant sa configuration de verrouillage ; - Figure 1 shows a cross sectional view of the hinge assembly according to the invention occupying its locking configuration;
- la figure 2 est une vue de face de l'ensemble d'articulation de la figure 1 dans sa configuration de verrouillage, sur laquelle certains éléments ont été omis afin de faciliter la compréhension de l'invention ; - Figure 2 is a front view of the hinge assembly of Figure 1 in its locking configuration, on which some elements have been omitted to facilitate understanding of the invention;
- les figures 3 et 4 sont semblables aux figures 1 et 2 mais illustrent l'ensemble d'articulation selon l'invention dans sa configuration de mise en tablette ; - Figures 3 and 4 are similar to Figures 1 and 2 but illustrate the hinge assembly according to the invention in its tablet configuration;
- les figures 5 et 6 sont semblables aux figures 1 et 2 mais illustrent l'ensemble d'articulation selon l'invention dans sa configuration d'accès aux places arrière ; - Figures 5 and 6 are similar to Figures 1 and 2 but illustrate the hinge assembly according to the invention in its rear access configuration;
- la figure 7 est une vue de face de l'organe de commande de mise en tablette que comporte l'ensemble d'articulation selon l'invention ; et - Figure 7 is a front view of the tablet control member that comprises the hinge assembly according to the invention; and
- les figures 8A, 8B et 8C sont respectivement des vues de la face interne, de la tranche et de la face externe du second flasque de l'ensemble d'articulation selon l'invention. - Figures 8A, 8B and 8C are respectively views of the inner face, the edge and the outer face of the second flange of the hinge assembly according to the invention.
Description détaillée d'un mode de réalisation Detailed description of an embodiment
L'ensemble d'articulation 1 représenté sur les figures est intégré dans un siège de véhicule automobile (non illustré) et permet de régler l'inclinaison relative entre le dossier et l'assise de ce siège. The hinge assembly 1 shown in the figures is integrated into a motor vehicle seat (not shown) and allows to adjust the relative inclination between the backrest and the seat of this seat.
Cet ensemble d'articulation 1 comporte un premier flasque 2 et un deuxième flasque 3 fixés respectivement au dossier D et à l'assise A du siège ou vice versa, de préférence par soudage.
Les rebords périphériques 2A, 3A des deux flasques 2 et 3 sont maintenus accolés l'un à l'autre par l'intermédiaire d'une bague annulaire de maintien non représentée sur les figures. This hinge assembly 1 comprises a first flange 2 and a second flange 3 respectively fixed to the backrest D and seat A of the seat or vice versa, preferably by welding. The peripheral flanges 2A, 3A of the two flanges 2 and 3 are held contiguous to each other by means of an annular retaining ring not shown in the figures.
Le flasque 2 présente une ouverture circulaire centrale 21 délimitée par une tranche annulaire fixée par soudure sur la paroi latérale 41 d'un fourreau cylindrique 4 traversant cette ouverture 21. The flange 2 has a central circular opening 21 delimited by an annular wafer fixed by welding on the side wall 41 of a cylindrical sheath 4 passing through this opening 21.
Ce fourreau 4 comporte à son extrémité externe saillant du flasque 2, une paroi de fond 42 dans laquelle est ménagée une ouverture 43 centrée sur l'axe du flasque 3. This sleeve 4 has at its outer end protruding from the flange 2, a bottom wall 42 in which is formed an opening 43 centered on the axis of the flange 3.
Le fourreau 4 comprend également une collerette 44 s'étendant radialement depuis l'extrémité interne de la paroi latérale 41, et portant une denture extérieure 45. The sleeve 4 also comprises a flange 44 extending radially from the inner end of the side wall 41, and bearing an external toothing 45.
Le flasque 3 qui est représenté seul sur les figures 8A à 8C, présente un axe parallèle et légèrement distant de celui du flasque 2. The flange 3 which is shown alone in FIGS. 8A to 8C, has an axis parallel and slightly distant from that of the flange 2.
Il comprend une ouverture circulaire centrale 31 et porte à proximité de sa périphérie interne une couronne annulaire 32 centrée sur son axe. Cette couronne annulaire 32 est munie sur sa périphérie intérieure d'une bande crantée 33 s'étendant sur l'ensemble de sa circonférence. It comprises a central circular opening 31 and carries near its inner periphery an annular ring 32 centered on its axis. This annular ring 32 is provided on its inner periphery with a notched band 33 extending over its entire circumference.
Un alésage 34, centré sur l'axe de l'ouverture 31, est ménagé sur la face externe de ce flasque 3. A bore 34, centered on the axis of the opening 31, is formed on the outer face of this flange 3.
Ce dernier présente également sur sa face interne deux couples de deux pistes de guidage 35, 36 en arc de cercle, les deux couples de pistes étant disposés symétriquement l'un l'autre par rapport à l'axe du flasque 3. The latter also has on its inner face two pairs of two guiding tracks 35, 36 in an arc of circle, the two pairs of tracks being disposed symmetrically to each other with respect to the axis of the flange 3.
Chaque piste de guidage 35, de plus grand diamètre, s'étend à proximité de la couronne annulaire 32 sur environ 90°. Elle est délimitée par deux nervures jointes 35A, 35B à l'une de leurs extrémités. Each guide track 35, of larger diameter, extends near the annular ring 32 about 90 °. It is delimited by two joined ribs 35A, 35B at one of their ends.
Chaque piste de guidage 36, de plus petit diamètre, est contigue à la piste 35 mais s'étend sur un secteur angulaire plus réduit d'environ 45°. Each guide track 36, of smaller diameter, is contiguous to the track 35 but extends over a smaller angular sector of about 45 °.
Elle est délimitée par la nervure 35B et une troisième nervure 36A plus courte dont l'une des extrémités vient rejoindre cette nervure 35B.
Deux lumières de commande en arc de cercle 37, 38 sont par ailleurs ménagées en partie centrale de ce flasque 3, ces dernières s'étendant symétriquement par rapport à son axe. It is delimited by the rib 35B and a third shorter rib 36A, one of whose ends joins this rib 35B. Two control lights arc 37, 38 are also provided in the central portion of the flange 3, the latter extending symmetrically with respect to its axis.
Le flasque 3 comprend enfin un pion de butée 39 s'étendant depuis sa face interne 3C et selon une direction axiale. The flange 3 finally comprises an abutment pin 39 extending from its inner face 3C and in an axial direction.
Entre les deux flasques 2 et 3, l'ensemble d'articulation 1 comporte un disque intermédiaire 5, un anneau de débrayage 6, deux grains de débrayage parallélépipédiques 7, ainsi qu'un organe de commande excentrique 8. Between the two flanges 2 and 3, the hinge assembly 1 comprises an intermediate disc 5, a clutch ring 6, two parallelepiped release claws 7, and an eccentric control member 8.
Le disque intermédiaire 5 comprend une couronne annulaire périphérique 51 s'étendant depuis sa face orientée en direction du flasque 3. La face intérieure de cette couronne annulaire 51 est emmanchée à pivotement sur la face extérieure de la couronne annulaire 32 du flasque 3, de sorte que le disque intermédiaire 5 et le flasque 3 sont coaxiaux et peuvent librement pivoter l'un par rapport à l'autre. The intermediate disk 5 comprises a peripheral annular ring 51 extending from its oriented face toward the flange 3. The inner face of this annular ring 51 is pivotally fitted on the outer face of the annular ring 32 of the flange 3, so that that the intermediate disc 5 and the flange 3 are coaxial and can freely rotate relative to each other.
Ce disque intermédiaire 5 présente une ouverture circulaire centrale 53 traversée par la paroi latérale 41 du fourreau cylindrique 4 et dont le diamètre est légèrement supérieur à celui de cette paroi latérale 41. Le disque 5 est en outre intercalé entre le flasque 2 et la collerette 44 du fourreau 4 qui l'empêchent de translater axialement. This intermediate disc 5 has a central circular opening 53 through which the side wall 41 of the cylindrical sleeve 4 and whose diameter is slightly greater than that of this side wall 41. The disc 5 is furthermore interposed between the flange 2 and the flange 44 the sheath 4 which prevent it from translating axially.
Sa face orientée en direction du flasque 3, présente un manchon axial 54 portant une denture intérieure 55 engrainée avec la denture extérieure 45 du fourreau 4 qui comporte un nombre de dents supérieur d'au moins une dent à celui de cette denture intérieure 55. Its face oriented in the direction of the flange 3, has an axial sleeve 54 bearing an internal toothing 55 engrained with the external toothing 45 of the sleeve 4 which has a number of teeth greater than at least one tooth to that of the internal toothing 55.
Les deux dentures 45, 55 centrées respectivement sur l'axe du flasque 2 et sur celui du flasque 3, sont donc légèrement décalées axialement. The two sets of teeth 45, 55 respectively centered on the axis of the flange 2 and on that of the flange 3, are therefore slightly axially offset.
La face orientée en direction du flasque 3, présente également deux empreintes rectangulaires de guidage 56, symétriques l'une de l'autre par rapport à l'axe de disque intermédiaire 5, et s'étendant entre la couronne annulaire périphérique 51 et le manchon axial 54.
L'anneau de débrayage 6 présente une ouverture circulaire centrale 61 emmanchée à pivotement sur la face extérieure du manchon axial 54 du disque intermédiaire 5. The face oriented in the direction of the flange 3, also has two rectangular guiding cavities 56, symmetrical to each other with respect to the axis of the intermediate disc 5, and extending between the annular peripheral ring 51 and the sleeve axial 54. The disengaging ring 6 has a central circular opening 61 pivotally fitted on the outer face of the axial sleeve 54 of the intermediate disc 5.
Il comprend deux portions angulaires 62 courant sur environ 30°, symétriques l'une de l'autre par rapport à son axe, et présentant un diamètre extérieur D2 inférieur au diamètre extérieur nominal Di. It comprises two angular portions 62 running about 30 °, symmetrical to each other with respect to its axis, and having an outside diameter D 2 smaller than the nominal outside diameter Di.
L'anneau de débrayage 6 comprend également deux autres portions angulaires 63, symétriques l'une de l'autre par rapport à son axe, et s'étendant dans le prolongement des portions angulaires 62 sur environ 30°. Ces deux portions angulaires 63 présentent un diamètre extérieur D3 encore inférieur au diamètre extérieur D2 des portions angulaires 62. The clutch ring 6 also comprises two other angular portions 63, symmetrical to one another with respect to its axis, and extending in the extension of the angular portions 62 by about 30 °. These two angular portions 63 have an outside diameter D 3 still smaller than the outside diameter D 2 of the angular portions 62.
L'anneau de débrayage 6 comporte en outre deux tenons 64, 65 à section en arc de cercle et s'étendant symétriquement l'un de l'autre par rapport à son axe. The clutch ring 6 further comprises two pins 64, 65 arcuate section and extending symmetrically from one another relative to its axis.
Le premier tenon 64 traverse le flasque 3 au niveau de la lumière de commande 37, tandis que le second 65 traverse ce même flasque 2 au niveau de la lumière de commande 38. The first pin 64 passes through the flange 3 at the control light 37, while the second 65 passes through the same flange 2 at the control light 38.
Chacun des grains de débrayage parallélépipédique 7 est disposé entre le disque intermédiaire 5 et le flasque 3, en étant reçu partiellement à l'intérieur d'une empreinte rectangulaire 56, de sorte qu'il puisse coulisser radialement le long de cette empreinte. Each of the parallelepiped release claws 7 is disposed between the intermediate disk 5 and the flange 3, being partially received inside a rectangular cavity 56, so that it can slide radially along this cavity.
Des moyens élastiques de rappel, non représentés sur les figures, sollicitent en permanence les grains 7 à coulissement vers le centre de l'anneau de débrayage 6. Elastic return means, not shown in the figures, constantly urge the grains 7 to slide towards the center of the clutch ring 6.
Chaque grain 7, qui repose par sa face intérieure sur la tranche extérieure de cet anneau de débrayage 6, comporte un téton de guidage 71 apte à circuler le long d'une piste de guidage 35 ou 36. Each grain 7, which rests by its inner face on the outer edge of this clutch ring 6, has a guide pin 71 adapted to flow along a guide track 35 or 36.
En outre, les faces extérieures de ces grains 7 présentent des dents 72 aptes à coopérer avec la bande crantée périphérique 33 de la couronne annulaire 32. In addition, the outer faces of these grains 7 have teeth 72 capable of cooperating with the peripheral notched strip 33 of the annular ring 32.
L'organe de commande excentrique 8 comprend un moyeu cylindrique 81, centré sur l'axe du premier flasque 2, qui traverse
l'ouverture circulaire centrale 31 du flasque 3 et vient se loger partiellement dans le fourreau 4. The eccentric control member 8 comprises a cylindrical hub 81, centered on the axis of the first flange 2, which passes through the central circular opening 31 of the flange 3 and is housed partially in the sleeve 4.
Il comporte également un disque échancré 83 logeant un mécanisme à excentrique qui s'étend radialement depuis l'extrémité externe du moyeu 81. Centré sur l'axe du second flasque 3, ce disque échancré 83, est en outre logé dans l'alésage 34 du flasque 3. It also comprises a notched disc 83 housing an eccentric mechanism which extends radially from the outer end of the hub 81. Centered on the axis of the second flange 3, this notched disc 83 is further housed in the bore 34 flange 3.
L'organe de commande excentrique 8 présente également un évidement 85 traversant le moyeu 81 ainsi que le disque 83, et prévu pour la réception d'une tige d'entraînement 86 reliée à une molette de commande 88. The eccentric control member 8 also has a recess 85 passing through the hub 81 and the disc 83, and provided for receiving a drive rod 86 connected to a control wheel 88.
L'actionnement en rotation de cette molette 88 entraine la transmission d'un couple à l'organe de commande excentrique 8 qui va faire tourner le mécanisme à excentrique et provoquer un mouvement excentré de la denture extérieure 45 du fourreau 4 (lié mécaniquement au flasque 2) par rapport à la denture intérieure 55 du disque intermédiaire 5. The actuation in rotation of this wheel 88 causes the transmission of a torque to the eccentric control member 8 which will rotate the eccentric mechanism and cause an eccentric movement of the external toothing 45 of the sleeve 4 (mechanically linked to the flange 2) relative to the internal toothing 55 of the intermediate disk 5.
L'ensemble d'articulation 1 selon l'invention comporte également deux organes de commande, respectivement de mise en tablette (MET) 9 et d'accès aux places arrière (APA). The hinge assembly 1 according to the invention also comprises two control members, respectively tablet (MET) 9 and access to the rear seats (APA).
L'organe de commande MET 9 représenté de face sur la figure 7, présente une ouverture circulaire 92 par laquelle il est monté à pivotement sur la tige d'entraînement 86 entre le flasque 3 et la molette 88. Il comprend également une lumière en arc de cercle 93 concentrique avec l'ouverture 92 et traversée par le premier tenon 64 de l'anneau de débrayage 6. The control unit MET 9 shown frontally in FIG. 7 has a circular opening 92 through which it is pivotally mounted on the drive rod 86 between the flange 3 and the wheel 88. It also comprises an arcuate light. of circle 93 concentric with the opening 92 and traversed by the first pin 64 of the clutch ring 6.
Cet organe de commande MET 9 comporte en outre un bras 94 s'étendant radialement et relié à une poignée de mise en tablette non représentée sur les figures, This control member MET 9 further comprises an arm 94 extending radially and connected to a tablet making handle not shown in the figures,
L'organe de commande APA (non visible sur les figures) est quant à lui solidaire du second tenon 65 de l'anneau de débrayage 6. The control member APA (not visible in the figures) is secured to the second pin 65 of the clutch ring 6.
On va maintenant décrire rapidement le fonctionnement de l'ensemble d'articulation 1 selon l'invention.
Cet ensemble d'articulation présente une première configuration de verrouillage dans laquelle le flasque 3 et le disque intermédiaire 5 sont solidaires en rotation. We will now briefly describe the operation of the hinge assembly 1 according to the invention. This articulation assembly has a first locking configuration in which the flange 3 and the intermediate disk 5 are integral in rotation.
Dans cette configuration, les faces intérieures des deux grains de débrayage 7 reposent sur deux portions symétriques de la tranche de l'anneau de débrayage 6 où le diamètre extérieur de cet anneau est maximal (égal à Di), tandis que les dents de ces mêmes grains de débrayage 7 mordent sur la bande crantée périphérique 33 du flasque 3 (figures 1 et 2). In this configuration, the inner faces of the two release races 7 rest on two symmetrical portions of the edge of the release ring 6 where the outside diameter of this ring is maximal (equal to Di), while the teeth of these same release beads 7 bite on the peripheral notched strip 33 of the flange 3 (Figures 1 and 2).
Ce dernier est alors lié mécaniquement en rotation au disque intermédiaire 5 par le biais des grains 7, des empreintes de guidage 56 et de la bande crantée 33. The latter is then mechanically connected in rotation to the intermediate disc 5 through the grains 7, guiding cavities 56 and the toothed belt 33.
Dans cette configuration de verrouillage, lorsqu'un couple de rotation est transmis à l'organe de commande excentrique 8 via la molette de commande 88, les deux flasques 2 et 3 pivotent l'un par rapport à l'autre de manière continue, ce qui permet de régler précisément l'inclinaison du dossier D par rapport à l'assise A du siège. In this locking configuration, when a rotational torque is transmitted to the eccentric control member 8 via the control knob 88, the two flanges 2 and 3 pivot relative to each other in a continuous manner. which makes it possible to precisely adjust the inclination of the backrest D relative to the seat A of the seat.
Depuis la configuration de verrouillage, l'actionnement en rotation de l'organe de commande MET 9 via la poignée de mise en tablette provoque dans un premier temps le seul déplacement relatif du premier tenon 64 le long de la lumière en arc de cercle 93. Lorsque ce premier tenon 64 vient en butée contre une extrémité de cette lumière 93, la poursuite de la rotation de l'organe de commande MET 9 entraine celle de l'anneau de débrayage 6. Since the locking configuration, the actuation in rotation of the control member MET 9 via the tablet handling handle firstly causes the only relative displacement of the first pin 64 along the arcuate light 93. When this first stud 64 abuts against one end of this slot 93, the further rotation of the control member MET 9 causes that of the release ring 6.
Pour pourvoir effectuer la mise en tablette du siège, la rotation de cet organe de commande MET 9 doit être poursuivie jusqu'à ce que son bras radial 94 vienne buter contre le pion 39 du flasque 3. To be able to carry out the setting tablet seat, the rotation of the control member MET 9 must be continued until its radial arm 94 abuts against the pin 39 of the flange 3.
Du fait de la rotation de l'anneau 6 et de la sollicitation radiale exercée par les moyens de rappel élastiques sur les grains de débrayage 7, les faces intérieures de ces grains 7 reposent désormais sur les tranches des deux portions angulaires symétriques 62 de l'anneau de débrayage 6, dont le diamètre extérieur D2 est inférieur au diamètre extérieur Di sur lequel elles reposaient précédemment (figure 4), de sorte que les dents de ces mêmes grains de débrayage 7 ne mordent
plus sur la bande crantée périphérique 33 du flasque 3 ce qui a pour conséquence de désolidariser en rotation le flasque 3 du flasque 2 (figure 3). En outre, les tétons de guidages 71 des grains de débrayage 7 sont désormais en regard des entrées des pistes de guidage 35 du flasque 3. Due to the rotation of the ring 6 and the radial bias exerted by the elastic return means on the release beads 7, the inner faces of these grains 7 now rest on the edges of the two symmetrical angular portions 62 of the clutch ring 6, whose outer diameter D 2 is smaller than the outside diameter Di on which they previously rested (Figure 4), so that the teeth of these same clutch grains 7 do not bite more on the peripheral notched strip 33 of the flange 3 which has the effect of separating in rotation the flange 3 of the flange 2 (Figure 3). In addition, the guide pins 71 of the release beads 7 are now opposite the inputs of the guide tracks 35 of the flange 3.
L'ensemble d'articulation 1 se trouve alors dans une première configuration déverrouillée de mise en tablette dans laquelle le flasque 2 lié au dossier du siège peut librement pivoter vers l'arrière par rapport au flasque 3 lié à l'assise sur un secteur angulaire d'environ 90° correspondant à celui des pistes de guidage 35 (les tétons 71 qui circulent le long de ces pistes de guidage 35 venant alors buter contre leurs extrémités fermées, ce qui empêche la poursuite du pivotement du flasque 2). The hinge assembly 1 is then in a first unlocked configuration of tablet in which the flange 2 connected to the seat back can freely pivot backwards relative to the flange 3 connected to the seat on an angular sector approximately 90 ° corresponding to that of the guide tracks 35 (the pins 71 which circulate along these guide tracks 35 then abut against their closed ends, which prevents the further pivoting of the flange 2).
On notera que lors du pivotement du flasque 2, les tenons 64, 65 de l'anneau de débrayage 6 coulissent le long des lumières 37, 38 du flasque 3. It will be noted that during the pivoting of the flange 2, the tenons 64, 65 of the clutch ring 6 slide along the slots 37, 38 of the flange 3.
Depuis la configuration de verrouillage, l'actionnement de l'organe de commande APA solidaire du second tenon 64 provoque la rotation de l'anneau de débrayage 6 sur un secteur angulaire plus important que pour la mise en tablette. Since the locking configuration, the actuation of the APA control member secured to the second pin 64 causes the rotation of the clutch ring 6 on a larger angular sector than for setting tablet.
Du fait de cette rotation de l'anneau 6 et de la sollicitation radiale exercée par les moyens de rappel élastiques sur les grains de débrayage 7, Les faces intérieures de ces grains 7 reposent désormais sur les tranches des deux portions angulaires symétriques 63 de l'anneau de débrayage 6, dont le diamètre extérieur D3 est inférieur au diamètre extérieur Di sur lequel elles reposaient précédemment (figure 6), de sorte que les dents de ces mêmes grains de débrayage 7 ne mordent plus sur la bande crantée périphérique 33 du flasque 3 ce qui a pour conséquence de désolidariser en rotation le flasque 3 du flasque 2. Due to this rotation of the ring 6 and the radial stress exerted by the elastic return means on the release beads 7, the inner faces of these grains 7 now rest on the edges of the two symmetrical angular portions 63 of the clutch ring 6, whose outer diameter D 3 is smaller than the outside diameter Di on which they previously rested (Figure 6), so that the teeth of these same clutch beads 7 no longer bite on the peripheral notched strip 33 of the flange 3 which has the effect of separating in rotation the flange 3 of the flange 2.
En outre, les tétons de guidage 71 des grains de débrayage 7 sont désormais en regard des entrées des pistes de guidage 36 du flasque 3. In addition, the guide nipples 71 of the release beads 7 are now opposite the entries of the guide tracks 36 of the flange 3.
L'ensemble d'articulation 1 se trouve alors dans une seconde configuration déverrouillée d'accès aux places arrière dans laquelle le flasque 2 lié au dossier du siège peut librement pivoter vers l'arrière par
rapport au flasque 3 lié à l'assise sur un secteur angulaire d'environ 45° correspondant à celui des pistes de guidage 36 (les tétons s 71 coulissant le long de ces pistes de guidage 36 venant alors buter contre leurs extrémités fermées, ce qui empêche la poursuite du pivotement du flasque 2). The hinge assembly 1 is then in a second unlocked configuration of access to the rear seats in which the flange 2 connected to the seat back can freely pivot backwards by compared to the flange 3 bonded to the seat on an angular sector of approximately 45 ° corresponding to that of the guide tracks 36 (the pins 71 sliding along these guide tracks 36 then abut against their closed ends, which prevents continued flange 2).
Selon des variantes de réalisation non représentées, certains éléments de l'ensemble d'articulation selon l'invention peuvent être conformés différemment. Tel est notamment le cas des grains de débrayage dont la forme, le nombre et la disposition peuvent être modifiés sans que l'on sorte du cadre de l'invention. According to alternative embodiments not shown, some elements of the hinge assembly according to the invention can be shaped differently. This is particularly the case of clutch grains whose shape, number and layout can be modified without departing from the scope of the invention.
De la même manière, le nombre de pistes de guidage et/ou leur étendue angulaire peuvent varier. De préférence, la première piste de guidage s'étend sur un secteur angulaire compris entre 30 et 45°, tandis que la seconde s'étend sur un secteur angulaire compris entre 75 et 90°. In the same way, the number of guide tracks and / or their angular extent can vary. Preferably, the first guide track extends over an angular sector between 30 and 45 °, while the second extends over an angular sector between 75 and 90 °.
D'une manière générale, on rappelle que la présente invention ne se limite pas aux formes de réalisation décrites et représentées, mais qu'elle englobe toute variante d'exécution à la portée de l'homme du métier.
In general, it is recalled that the present invention is not limited to the embodiments described and shown, but encompasses any embodiment within the scope of those skilled in the art.
Claims
1. Ensemble d'articulation débrayable pour siège de véhicule automobile comportant : 1. Disengageable hinge assembly for a motor vehicle seat comprising:
- un premier flasque (2) lié en rotation avec une denture extérieure (45) présentant un premier axe ; - a first flange (2) rotatably connected with an external toothing (45) having a first axis;
- un deuxième flasque (3), lesdits premier et deuxième flasques (2, 3) étant prévus pour être fixés respectivement à l'assise et au dossier du siège ou vice versa ; - A second flange (3), said first and second flanges (2, 3) being provided to be respectively fixed to the seat and back of the seat or vice versa;
- un mécanisme à excentrique reliant ladite denture extérieure (45) à une denture intérieure (55) présentant un deuxième axe parallèle et légèrement distant dudit premier axe, et comportant un nombre de dents supérieur d'au moins une dent à celui de ladite denture extérieure (45), an eccentric mechanism connecting said external toothing (45) to an internal toothing (55) having a second axis parallel and slightly remote from said first axis, and comprising a number of teeth greater than at least one tooth to that of said external toothing; (45)
- un organe de commande (8) pour faire tourner ledit mécanisme à excentrique et entraîner la rotation de ladite denture extérieure (45) dans ladite denture intérieure (55) ; - a control member (8) for rotating said eccentric mechanism and causing rotation of said external toothing (45) in said internal toothing (55);
- des moyens de débrayage comportant un organe de débrayage (6) actionnable en rotation et au moins un grain de débrayage (7) monté coulissant radialement, la rotation dudit organe de débrayage (6) entraînant le au moins dit grain de débrayage (7) en translation radiale pour faire passer ledit ensemble d'articulation d'une configuration verrouillée dans laquelle le au moins dit grain de débrayage (7) lie en rotation ladite denture intérieure (55) et ledit deuxième flasque (3), à au moins une première configuration déverrouillée dans laquelle ladite denture intérieure (55) et ledit deuxième flasque (3) sont désolidarisés en rotation ; - Disengagement means comprising a disengaging member (6) operable in rotation and at least one disengaging pin (7) mounted radially sliding, the rotation of said disengaging member (6) driving the at least said disengagement grain (7) in radial translation for passing said articulation assembly of a locked configuration in which the at least said clutching grain (7) rotates said inner toothing (55) and said second flange (3), to at least a first unlocked configuration in which said internal toothing (55) and said second flange (3) are disengaged in rotation;
caractérisé en ce que chaque au moins dit grain de débrayage (7) comporte un téton (71) apte à circuler, dans ladite première configuration déverrouillée, le long d'une première piste de guidage semi-fermée correspondante (35) prévue sur ledit deuxième flasque (3) et s'étendant sur un secteur angulaire prédéterminé.
characterized in that each at least one clutching grain (7) comprises a pin (71) able to circulate, in said first unlocked configuration, along a first corresponding semi-closed guide track (35) provided on said second flange (3) and extending over a predetermined angular sector.
2. Ensemble d'articulation selon la revendication 1, caractérisé en ce que ladite première piste de guidage (35) s'étend sur un secteur angulaire compris entre 30 et 45°. 2. hinge assembly according to claim 1, characterized in that said first guide track (35) extends over an angular sector between 30 and 45 °.
3. Ensemble d'articulation selon l'une des revendications 1 à 2, caractérisé en ce qu'il présente une seconde configuration déverrouillée dans laquelle le téton (71) de chaque au moins dit grain de débrayage (7) est apte à circuler le long d'une seconde piste de guidage correspondante (36) prévue sur ledit deuxième flasque (3) et s'étendant sur un secteur angulaire prédéterminé différent de celui de la dite première piste (35). 3. hinge assembly according to one of claims 1 to 2, characterized in that it has a second unlocked configuration in which the stud (71) of each at least said clutch release (7) is able to circulate the along a second corresponding guide track (36) provided on said second flange (3) and extending over a predetermined angular sector different from that of said first track (35).
4. Ensemble d'articulation selon la revendication 3, caractérisé en ce que ladite seconde piste de guidage (36) s'étend sur un secteur angulaire compris entre 75 et 90°. 4. hinge assembly according to claim 3, characterized in that said second guide track (36) extends over an angular sector between 75 and 90 °.
5. Ensemble d'articulation selon l'une des revendications 1 à 4, caractérisé en ce que ledit organe de débrayage (6) actionnable en rotation est constitué d'un anneau (6) sur la tranche extérieure duquel repose le au moins dit grain de débrayage (7), ledit anneau (6) comprenant au moins une portion angulaire dont le diamètre extérieur (D2) est inférieur au diamètre extérieur nominal (D de cet anneau (6) et sur laquelle repose le au moins dit grain de débrayage (7) dans ladite première configuration déverrouillée. 5. hinge assembly according to one of claims 1 to 4, characterized in that said release member (6) operable in rotation consists of a ring (6) on the outer edge of which rests the at least said grain disengaging device (7), said ring (6) comprising at least one angular portion whose outer diameter (D 2 ) is smaller than the nominal outside diameter (D of this ring (6) and on which the at least said disengagement grain rests (7) in said first unlocked configuration.
6. Ensemble d'articulation selon les revendications 3 et 5, caractérisé en ce que ledit anneau comprend au moins une autre portion angulaire dont le diamètre extérieur (D3) est inférieur à celui (D2) de ladite portion angulaire et sur laquelle repose le au moins dit grain de débrayage (7) dans ladite seconde configuration déverrouillée. 6. hinge assembly according to claims 3 and 5, characterized in that said ring comprises at least one other angular portion whose outer diameter (D 3 ) is smaller than (D 2 ) of said angular portion and on which rests the at least said clutch seed (7) in said second unlocked configuration.
7. Ensemble d'articulation selon l'une des revendications 5 ou 6, caractérisé en ce que lesdits moyens de débrayage comportent des moyens élastiques de rappel sollicitant en permanence le au moins dit grain de débrayage (7) à coulissement vers l'axe dudit anneau (6). 7. Articulation assembly according to one of claims 5 or 6, characterized in that said disengaging means comprise resilient biasing means continuously urging the at least said clutch release (7) slidable towards the axis of said ring (6).
8. Ensemble d'articulation selon l'une des revendications 1 à 7, caractérisé en ce que lesdits moyens de débrayage comportent en outre un disque intermédiaire (5) disposé entre lesdits flasques (2, 3) et comprenant un manchon axial (54) portant ladite denture intérieure
(55), ledit au moins un grain de débrayage (7) étant monté coulissant le long d'au moins une empreinte correspondante (56) ménagée sur ledit disque intermédiaire (5). 8. hinge assembly according to one of claims 1 to 7, characterized in that said disengaging means further comprise an intermediate disk (5) disposed between said flanges (2, 3) and comprising an axial sleeve (54) bearing said internal toothing (55), said at least one disengaging seed (7) being slidably mounted along at least one corresponding indentation (56) formed on said intermediate disk (5).
9. Ensemble d'articulation selon la revendication 8, caractérisé en ce que lesdits moyens de débrayage comporte deux grains de débrayage (7) montés coulissants le long de deux empreintes (56) symétriques l'une de l'autre par rapport à l'axe dudit disque intermédiaire (5). 9. Articulation assembly according to claim 8, characterized in that said disengaging means comprises two release beads (7) slidably mounted along two recesses (56) symmetrical to each other relative to the axis of said intermediate disk (5).
10. Ensemble d'articulation selon l'une des revendications 8 ou 9, caractérisé en ce que le au moins dit grain de débrayage (7) comporte des dents (72) apte à coopérer dans ladite configuration verrouillée avec une couronne annulaire crantée (33) portée par ledit deuxième flasque (3), de sorte à lier en rotation ladite denture intérieure (55) et ledit deuxième flasque (3).
10. hinge assembly according to one of claims 8 or 9, characterized in that the at least said clutch release (7) comprises teeth (72) adapted to cooperate in said locked configuration with a notched annular ring (33). ) carried by said second flange (3), so as to link in rotation said inner toothing (55) and said second flange (3).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15830816.3A EP3247583A1 (en) | 2015-01-22 | 2015-12-21 | Disengageable hinge assembly for the seat of a motor vehicle. |
CN201580074250.2A CN107428266A (en) | 2015-01-22 | 2015-12-21 | Separable hinge component for automobile seat |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1550516A FR3031942B1 (en) | 2015-01-22 | 2015-01-22 | DEBRAYABLE JOINT ASSEMBLY FOR MOTOR VEHICLE SEAT. |
FR1550516 | 2015-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016116674A1 true WO2016116674A1 (en) | 2016-07-28 |
Family
ID=53008660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2015/053680 WO2016116674A1 (en) | 2015-01-22 | 2015-12-21 | Disengageable hinge assembly for the seat of a motor vehicle. |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3247583A1 (en) |
CN (1) | CN107428266A (en) |
FR (1) | FR3031942B1 (en) |
WO (1) | WO2016116674A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3519441A1 (en) * | 1984-05-31 | 1985-12-05 | Aisin Seiki K.K., Kariya, Aichi | SEAT CONTROL MECHANISM FOR VEHICLES |
FR2743032A1 (en) | 1995-12-27 | 1997-07-04 | Keiper Recaro Gmbh Co | ADJUSTING AND LOCKING DEVICE FOR SEATS OF MOTOR VEHICLES, ESPECIALLY FOR FILE ADJUSTMENT |
FR3003818A1 (en) | 2013-03-26 | 2014-10-03 | Peugeot Citroen Automobiles Sa | DEBRAYABLE JOINT ASSEMBLY FOR MOTOR VEHICLE SEAT |
FR3006255A1 (en) * | 2013-05-30 | 2014-12-05 | Peugeot Citroen Automobiles Sa | DEBRAYABLE JOINT ASSEMBLY FOR MOTOR VEHICLE SEAT. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL120108C (en) * | 1960-12-27 | |||
DE2328022C3 (en) * | 1973-06-01 | 1981-08-13 | Keiper Automobiltechnik Gmbh & Co Kg, 5630 Remscheid | Articulated fittings for seats, in particular vehicle seats |
DE102010038795A1 (en) * | 2010-08-02 | 2012-02-02 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Pivot fitting for swingable adjustment of backrest and sitting part of seat of vehicle to each other, has eccentric cam element comprising radially inwardly pointing recesses at contact surface for formation of lubrication slots |
-
2015
- 2015-01-22 FR FR1550516A patent/FR3031942B1/en not_active Expired - Fee Related
- 2015-12-21 WO PCT/FR2015/053680 patent/WO2016116674A1/en active Application Filing
- 2015-12-21 EP EP15830816.3A patent/EP3247583A1/en not_active Withdrawn
- 2015-12-21 CN CN201580074250.2A patent/CN107428266A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3519441A1 (en) * | 1984-05-31 | 1985-12-05 | Aisin Seiki K.K., Kariya, Aichi | SEAT CONTROL MECHANISM FOR VEHICLES |
FR2743032A1 (en) | 1995-12-27 | 1997-07-04 | Keiper Recaro Gmbh Co | ADJUSTING AND LOCKING DEVICE FOR SEATS OF MOTOR VEHICLES, ESPECIALLY FOR FILE ADJUSTMENT |
FR3003818A1 (en) | 2013-03-26 | 2014-10-03 | Peugeot Citroen Automobiles Sa | DEBRAYABLE JOINT ASSEMBLY FOR MOTOR VEHICLE SEAT |
FR3006255A1 (en) * | 2013-05-30 | 2014-12-05 | Peugeot Citroen Automobiles Sa | DEBRAYABLE JOINT ASSEMBLY FOR MOTOR VEHICLE SEAT. |
Also Published As
Publication number | Publication date |
---|---|
EP3247583A1 (en) | 2017-11-29 |
FR3031942A1 (en) | 2016-07-29 |
FR3031942B1 (en) | 2017-01-20 |
CN107428266A (en) | 2017-12-01 |
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