WO2018096256A1 - Headrest for a motor vehicle seat - Google Patents

Headrest for a motor vehicle seat Download PDF

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Publication number
WO2018096256A1
WO2018096256A1 PCT/FR2017/053196 FR2017053196W WO2018096256A1 WO 2018096256 A1 WO2018096256 A1 WO 2018096256A1 FR 2017053196 W FR2017053196 W FR 2017053196W WO 2018096256 A1 WO2018096256 A1 WO 2018096256A1
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WO
WIPO (PCT)
Prior art keywords
bar
locking
configuration
headrest
rods
Prior art date
Application number
PCT/FR2017/053196
Other languages
French (fr)
Inventor
Laurent Georges
Grégory HERVE
Original Assignee
Cera Tsc
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 Cera Tsc filed Critical Cera Tsc
Priority to EP17811646.3A priority Critical patent/EP3544853A1/en
Publication of WO2018096256A1 publication Critical patent/WO2018096256A1/en

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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
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • B60N2/812—Head-rests movable or adjustable vertically slidable characterised by their locking devices
    • B60N2/818—Head-rests movable or adjustable vertically slidable characterised by their locking devices with stepwise positioning
    • 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
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/809—Head-rests movable or adjustable vertically slidable
    • B60N2/812—Head-rests movable or adjustable vertically slidable characterised by their locking devices
    • B60N2/815—Release mechanisms, e.g. buttons
    • 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
    • B60N2/80—Head-rests
    • B60N2/894—Head-rests with rods solidly attached to the back-rest
    • 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
    • B60N2/80—Head-rests
    • B60N2/897—Head-rests with sleeves located in the back-rest for guiding the rods of the head-rest
    • 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
    • B60N2/80—Head-rests
    • B60N2002/899—Head-rests characterised by structural or mechanical details not otherwise provided for

Definitions

  • the invention relates to a headrest of a motor vehicle seat. It is known to make a headrest of a motor vehicle seat, said headrest comprising:
  • Two parallel lateral seat connection rods intended to be mounted at the top of the back of said seat, said rods being provided with locking notches emerging towards the front or towards the rear, "a casing made of molded plastic material for absorption of energy in case of impact of the head of a passenger on said headrest, said rods being slidably mounted in said housing,
  • a device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow height adjustment of said housing said device comprising two latches each provided with a locking pin, said latches being operable between a position locking, wherein each of said lugs engages in one of said respective notches, and an unlocking position, wherein said lugs are disengaged from said notches.
  • the headrest further comprises a transverse unlocking bar, said bar being transversely slidably mounted in said housing so as to be operable between a locking configuration and an unlocking configuration, the locks being integrated. at said bar.
  • the bar comprises two projections, generally molded one piece with it, said projections forming locking lugs.
  • the insertion of the lugs in the notches is by a transverse sliding of said lugs. It can then happen, if the casing is squeezed when it is actuated to adjust its height, that one of the lugs is well positioned opposite one notch while the other is slightly offset in height, which causes difficulties in achieving the expected lock.
  • the invention aims to overcome this disadvantage.
  • the invention proposes a motor vehicle seat headrest, said headrest comprising:
  • Two parallel lateral seat connection rods intended to be mounted at the top of the back of said seat, said rods being provided with locking notches opening towards the front or towards the rear,
  • a device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow height adjustment of said housing said device comprising two latches each provided with a locking pin, said latches being operable between a position locking, wherein each of said lugs engages in one of said respective notches, and an unlocking position, wherein said lugs are disengaged from said notches, said device further having the following characteristics:
  • Said locks are slidably mounted longitudinally in said housing to move from one position to the other by being actuated towards their locking position by two respective springs, each of said latches being provided with a receiving face,
  • transverse unlocking bar said bar: o being transversely slidably mounted in said housing so as to be operable between a locking configuration and an unlocking configuration
  • each of said receiving faces so as to slide on when actuated from one configuration to another
  • the insertion of the lugs into the corresponding notches, when locking the height of the housing is much easier than in a configuration where the notches are inserted laterally, and this even if the lugs are not not arranged strictly at the same height when locking.
  • the notches in lateral view usually have an enlargement at the level of their opening towards the outside, said enlargement helping to insert the lugs in said notches even if one of the lugs is slightly offset in height with respect to the 'other.
  • FIG. 1 is a schematic partial perspective view of a headrest according to a first embodiment
  • FIG. 2 is a schematic partial perspective view of a locking device of the headrest of FIG. 1;
  • FIG. 3 is a schematic view in partial vertical section of the headrest of the preceding figures, a lock being represented in the locking position,
  • FIG. 4 is a schematic view in partial horizontal section of the headrest of the preceding figures in a first plane, the locks being in the locked position
  • FIG. 5 is a view similar to that of FIG. 4, the section being made along a second plane parallel to the first,
  • FIG. 6 is a view similar to that of FIG. 5, the latches being in the unlocking position
  • FIG. 7 is a schematic partial perspective view of a locking device of a headrest according to a second embodiment
  • Figures 8a and 8b are views in principle in partial horizontal section of a headrest provided with the locking device of Figure 7, the latches being in the locking position (8a) and unlocking (8b).
  • a headrest 1 of a motor vehicle seat comprising:
  • Two lateral parallel link rods 2 connected to the seat intended to be mounted at the top of the back of said seat, said rods being provided with locking notches 3 opening towards the front or towards the rear,
  • a casing 4 made of molded plastic material for absorbing energy in the event of a head being hit by a passenger on said headrest, said rods being slidably mounted in said casing,
  • a device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow height adjustment of said housing said device comprising two latches each provided with a locking pin 6, said latches; being operable between a locking position, wherein each of said lugs engages in one of said respective notches, and an unlocking position, wherein said lugs are disengaged from said notches, said device further having the following characteristics:
  • Said locks are slidably mounted longitudinally in said housing to move from one position to the other by being actuated towards their locking position by two respective springs 8, each of said locks being provided with a reception face 7,
  • transverse unlocking bar 9 said bar:
  • each of said receiving faces in sliding manner when it is actuated from one configuration to the other, being provided with an actuating surface cooperating with minus a complementary surface January 1, said surfaces being arranged so that the passage of said bar from its locking configuration to its unlocking configuration performs an actuation of said locks from their locking position to their unlocking position.
  • the housing 4 is in particular covered with a support cushion.
  • the headrest 1 further comprises a spring 12 for returning the bar 9 to its locking configuration.
  • the headrest 1 further comprises a push button 13 mounted in transverse translation on the casing 4 at the end 19 of the bar 9 so as to allow actuation of said bar from its locking configuration to its configuration of unlocking.
  • the latches 5 are based on molded plastic material, said latches each incorporating a metal molded reinforcement plate 14 extending facing the lugs 6.
  • the notches 3 open towards the front, which makes it possible to guarantee, under the effect of a force applied towards the rear by the head of the occupant of the seat, the application of a constraint facilitating the insertion of the locking lugs 6 into the notches 3.
  • the bar 9 is further mounted so as to be able to debate longitudinally between the front and rear stops 16 provided in the casing 4,
  • the headrest comprises two complementary surfaces 1 1 formed by a portion of the outer face of each of the rods 2,
  • the operating surface 10 is, in a top view, in the form of a line 17 provided with two notches 18 arranged to: receive said rods when said bar is in a locking configuration
  • the receiving surfaces 7 have two complementary surfaces 1 1 forming two cam followers, the actuating surface 10 forming a cam having, in a top view, two portions inclined by 20 relative to a transverse direction, said parts being arranged so as to:
  • the parts 20 in high view are straight, knowing that, not shown, we can consider giving them a different geometry, including curved.
  • the bar 9 bears against the actuating surface 10 on the rods 2.
  • the bar 9 can in this case be supported on the housing 4 by means of a reinforcement piece, not shown, associated with said housing, said part being in particular based on a plastic material that is not very sensitive to expansion. when subjected to temperature differences, for example a polyoxymethylene or a polyamide.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)

Abstract

The invention concerns a headrest comprising two rods (2) provided with locking notches (3) that are mounted so as to be able to slide in a housing (4) with a locking device comprising two locks (5), said locks being mounted so as to be able to slide longitudinally, each of said locks being provided with a receiving face (7), the locking device further comprising a bar (9) mounted so as to slide transversely in said housing between a locked configuration and an unlocked configuration, said bar supporting each of said receiving faces in such a way as to slide thereon when it is actuated from one configuration to the other, and being provided with an actuation surface (10) cooperating with at least one complementary surface (11), said surfaces being arranged such that the shifting of said bar from the locked configuration of same to the unlocked configuration of same actuates said locks from the locked position of same to the unlocked position of same.

Description

APPUI-TETE DE SIEGE DE VEHICULE AUTOMOBILE  HEADREST FOR THE SEAT OF A MOTOR VEHICLE
L'invention concerne un appui-tête de siège de véhicule automobile. II est connu de réaliser un appui-tête de siège de véhicule automobile, ledit appui- tête comprenant : The invention relates to a headrest of a motor vehicle seat. It is known to make a headrest of a motor vehicle seat, said headrest comprising:
• deux tiges parallèles latérales de liaison au siège destinées à être montées en haut de dossier dudit siège, lesdites tiges étant pourvues de crans de verrouillage débouchant vers l'avant ou vers l'arrière, « un boîtier en matériau plastique moulé d'absorption d'énergie en cas de choc de la tête d'un passager sur ledit appui-tête, lesdites tiges étant montées en coulissement dans ledit boîtier,  Two parallel lateral seat connection rods intended to be mounted at the top of the back of said seat, said rods being provided with locking notches emerging towards the front or towards the rear, "a casing made of molded plastic material for absorption of energy in case of impact of the head of a passenger on said headrest, said rods being slidably mounted in said housing,
• un dispositif de verrouillage dudit boîtier par rapport auxdites tiges selon une pluralité de positions verticales, de manière à permettre un réglage en hauteur dudit boîtier, ledit dispositif comprenant deux verrous pourvus chacun d'un ergot de verrouillage, lesdits verrous étant actionnables entre une position de verrouillage, où chacun desdits ergots s'engage dans un desdits crans respectif, et une position de déverrouillage, où lesdits ergots se dégagent desdits crans.  A device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow height adjustment of said housing, said device comprising two latches each provided with a locking pin, said latches being operable between a position locking, wherein each of said lugs engages in one of said respective notches, and an unlocking position, wherein said lugs are disengaged from said notches.
Selon une réalisation connue, l'appui-tête comprend en outre une barre transversale de déverrouillage, ladite barre étant montée en coulissement transversal dans ledit boîtier de manière à pouvoir être actionnée entre une configuration de verrouillage et une configuration de déverrouillage, les verrous étant intégrés à ladite barre. According to a known embodiment, the headrest further comprises a transverse unlocking bar, said bar being transversely slidably mounted in said housing so as to be operable between a locking configuration and an unlocking configuration, the locks being integrated. at said bar.
Concrètement, la barre comprend deux saillies, généralement moulées d'une pièce avec elle, lesdites saillies formant ergots de verrouillage. Avec un tel agencement, l'insertion des ergots dans les crans se fait par un coulissement transversal desdits ergots. Il peut alors arriver, en cas de mise en travers du boîtier lors de son actionnement pour régler sa hauteur, que l'un des ergots soit bien positionné en regard d'un cran alors que l'autre est légèrement décalé en hauteur, ce qui occasionne des difficultés pour réaliser le verrouillage attendu. Specifically, the bar comprises two projections, generally molded one piece with it, said projections forming locking lugs. With such an arrangement, the insertion of the lugs in the notches is by a transverse sliding of said lugs. It can then happen, if the casing is squeezed when it is actuated to adjust its height, that one of the lugs is well positioned opposite one notch while the other is slightly offset in height, which causes difficulties in achieving the expected lock.
L'invention a pour but de pallier cet inconvénient. The invention aims to overcome this disadvantage.
A cet effet, l'invention propose un appui-tête de siège de véhicule automobile, ledit appui-tête comprenant : For this purpose, the invention proposes a motor vehicle seat headrest, said headrest comprising:
• deux tiges parallèles latérales de liaison au siège destinées à être montées en haut de dossier dudit siège, lesdites tiges étant pourvues de crans de verrouillage débouchant vers l'avant ou vers l'arrière, Two parallel lateral seat connection rods intended to be mounted at the top of the back of said seat, said rods being provided with locking notches opening towards the front or towards the rear,
• un boîtier en matériau plastique moulé d'absorption d'énergie en cas de choc de la tête d'un passager sur ledit appui-tête, lesdites tiges étant montées en coulissement dans ledit boîtier, A casing of molded plastic material for absorbing energy in the event of an impact of the head of a passenger on said headrest, said rods being slidably mounted in said casing,
• un dispositif de verrouillage dudit boîtier par rapport auxdites tiges selon une pluralité de positions verticales, de manière à permettre un réglage en hauteur dudit boîtier, ledit dispositif comprenant deux verrous pourvus chacun d'un ergot de verrouillage, lesdits verrous étant actionnables entre une position de verrouillage, où chacun desdits ergots s'engage dans un desdits crans respectif, et une position de déverrouillage, où lesdits ergots se dégagent desdits crans, ledit dispositif présentant en outre les caractéristiques suivantes :  A device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow height adjustment of said housing, said device comprising two latches each provided with a locking pin, said latches being operable between a position locking, wherein each of said lugs engages in one of said respective notches, and an unlocking position, wherein said lugs are disengaged from said notches, said device further having the following characteristics:
• lesdits verrous sont montés en coulissement longitudinal dans ledit boîtier pour passer d'une position à l'autre en étant actionnés vers leur position de verrouillage par deux ressorts respectifs, chacun desdits verrous étant pourvu d'une face de réception,  Said locks are slidably mounted longitudinally in said housing to move from one position to the other by being actuated towards their locking position by two respective springs, each of said latches being provided with a receiving face,
• il comprend en outre une barre transversale de déverrouillage, ladite barre : o étant montée en coulissement transversal dans ledit boîtier de manière à pouvoir être actionnée entre une configuration de verrouillage et une configuration de déverrouillage, It further comprises a transverse unlocking bar, said bar: o being transversely slidably mounted in said housing so as to be operable between a locking configuration and an unlocking configuration,
o recevant en appui, sous l'effet desdits ressorts, chacune desdites faces de réception de manière à glisser dessus lorsqu'elle est actionnée d'une configuration à l'autre,  o receiving in support, under the effect of said springs, each of said receiving faces so as to slide on when actuated from one configuration to another,
o étant pourvue d'une surface d'actionnement coopérant avec au moins une surface complémentaire, lesdites surfaces étant agencées de sorte que le passage de ladite barre depuis sa configuration de verrouillage vers sa configuration de déverrouillage réalise un actionnement desdits verrous de leur position de verrouillage à leur position de déverrouillage.  o being provided with an actuating surface cooperating with at least one complementary surface, said surfaces being arranged so that the passage of said bar from its locking configuration to its unlocking configuration actuates said locks from their locking position to their unlocking position.
Dans cette description, les termes de positionnement dans l'espace (haut, longitudinal, transversal, latéral, avant, arrière, vertical,...) sont pris en référence à l'appui-tête disposé en situation d'utilisation dans le véhicule. In this description, the terms of positioning in the space (high, longitudinal, transverse, lateral, front, rear, vertical, ...) are taken with reference to the headrest disposed in use situation in the vehicle .
Avec l'agencement proposé, l'insertion des ergots dans les crans correspondant, lorsqu'on réalise le verrouillage en hauteur du boîtier, est beaucoup plus aisée que dans une configuration où les crans sont insérés latéralement, et ceci même si les ergots ne sont pas disposés strictement à la même hauteur lors du verrouillage. With the proposed arrangement, the insertion of the lugs into the corresponding notches, when locking the height of the housing is much easier than in a configuration where the notches are inserted laterally, and this even if the lugs are not not arranged strictly at the same height when locking.
En effet, les crans en vue latérale présentent usuellement un élargissement au niveau de leur ouverture vers l'extérieur, ledit élargissement aidant à l'insertion des ergots dans lesdits crans même si l'un des ergots est légèrement décalé en hauteur par rapport à l'autre. Indeed, the notches in lateral view usually have an enlargement at the level of their opening towards the outside, said enlargement helping to insert the lugs in said notches even if one of the lugs is slightly offset in height with respect to the 'other.
D'autres particularités et avantages de l'invention apparaîtront dans la description qui suit, faite en référence aux figures jointes, dans lesquelles : Other features and advantages of the invention will appear in the description which follows, made with reference to the appended figures, in which:
• la figure 1 est une vue schématique en perspective partielle d'un appui- tête selon une première réalisation, • la figure 2 est une vue schématique en perspective partielle d'un dispositif de verrouillage de l'appui-tête de la figure 1 , FIG. 1 is a schematic partial perspective view of a headrest according to a first embodiment, FIG. 2 is a schematic partial perspective view of a locking device of the headrest of FIG. 1;
• la figure 3 est une vue schématique en coupe verticale partielle de l'appui-tête des figures précédentes, un verrou étant représenté en position de verrouillage,  FIG. 3 is a schematic view in partial vertical section of the headrest of the preceding figures, a lock being represented in the locking position,
• la figure 4 est une vue schématique en coupe horizontale partielle de l'appui-tête des figures précédentes selon un premier plan, les verrous étant en position de verrouillage,  FIG. 4 is a schematic view in partial horizontal section of the headrest of the preceding figures in a first plane, the locks being in the locked position,
• la figure 5 est une vue analogue à celle de la figure 4, la coupe étant réalisée selon un deuxième plan parallèle au premier,  FIG. 5 is a view similar to that of FIG. 4, the section being made along a second plane parallel to the first,
• la figure 6 est une vue analogue à celle de la figure 5, les verrous étant en position de déverrouillage,  FIG. 6 is a view similar to that of FIG. 5, the latches being in the unlocking position,
• la figure 7 est une vue schématique en perspective partielle d'un dispositif de verrouillage d'un appui-tête selon une deuxième réalisation,  FIG. 7 is a schematic partial perspective view of a locking device of a headrest according to a second embodiment,
• les figures 8a et 8b sont des vues de principe en coupe horizontale partielle d'un appui-tête pourvu du dispositif de verrouillage de la figure 7, les verrous étant en position de verrouillage (8a) et de déverrouillage (8b).  • Figures 8a and 8b are views in principle in partial horizontal section of a headrest provided with the locking device of Figure 7, the latches being in the locking position (8a) and unlocking (8b).
En référence aux figures, on décrit un appui-tête 1 de siège de véhicule automobile, ledit appui-tête comprenant : With reference to the figures, a headrest 1 of a motor vehicle seat is described, said headrest comprising:
• deux tiges 2 parallèles latérales de liaison au siège destinées à être montées en haut de dossier dudit siège, lesdites tiges étant pourvues de crans 3 de verrouillage débouchant vers l'avant ou vers l'arrière, Two lateral parallel link rods 2 connected to the seat intended to be mounted at the top of the back of said seat, said rods being provided with locking notches 3 opening towards the front or towards the rear,
• un boîtier 4 en matériau plastique moulé d'absorption d'énergie en cas de choc de la tête d'un passager sur ledit appui-tête, lesdites tiges étant montées en coulissement dans ledit boîtier, A casing 4 made of molded plastic material for absorbing energy in the event of a head being hit by a passenger on said headrest, said rods being slidably mounted in said casing,
• un dispositif de verrouillage dudit boîtier par rapport auxdites tiges selon une pluralité de positions verticales, de manière à permettre un réglage en hauteur dudit boîtier, ledit dispositif comprenant deux verrous 5 pourvus chacun d'un ergot 6 de verrouillage, lesdits verrous étant actionnables entre une position de verrouillage, où chacun desdits ergots s'engage dans un desdits crans respectif, et une position de déverrouillage, où lesdits ergots se dégagent desdits crans, ledit dispositif présentant en outre les caractéristiques suivantes : A device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow height adjustment of said housing, said device comprising two latches each provided with a locking pin 6, said latches; being operable between a locking position, wherein each of said lugs engages in one of said respective notches, and an unlocking position, wherein said lugs are disengaged from said notches, said device further having the following characteristics:
· lesdits verrous sont montés en coulissement longitudinal dans ledit boîtier pour passer d'une position à l'autre en étant actionnés vers leur position de verrouillage par deux ressorts 8 respectifs, chacun desdits verrous étant pourvu d'une face de réception 7,  Said locks are slidably mounted longitudinally in said housing to move from one position to the other by being actuated towards their locking position by two respective springs 8, each of said locks being provided with a reception face 7,
• il comprend en outre une barre 9 transversale de déverrouillage, ladite barre :  It further comprises a transverse unlocking bar 9, said bar:
o étant montée en coulissement transversal dans ledit boîtier de manière à pouvoir être actionnée entre une configuration de verrouillage et une configuration de déverrouillage,  o being transversely slidably mounted in said housing so as to be operable between a locking configuration and an unlocking configuration,
o recevant en appui, sous l'effet desdits ressorts, chacune desdites faces de réception de manière à glisser dessus lorsqu'elle est actionnée d'une configuration à l'autre, o étant pourvue d'une surface d'actionnement 10 coopérant avec au moins une surface complémentaire 1 1 , lesdites surfaces étant agencées de sorte que le passage de ladite barre depuis sa configuration de verrouillage vers sa configuration de déverrouillage réalise un actionnement desdits verrous de leur position de verrouillage à leur position de déverrouillage.  receiving, under the effect of said springs, each of said receiving faces in sliding manner when it is actuated from one configuration to the other, being provided with an actuating surface cooperating with minus a complementary surface January 1, said surfaces being arranged so that the passage of said bar from its locking configuration to its unlocking configuration performs an actuation of said locks from their locking position to their unlocking position.
De façon non représentée, le boîtier 4 est notamment revêtu d'un coussin d'appui. In a manner not shown, the housing 4 is in particular covered with a support cushion.
Selon la réalisation représentée, l'appui-tête 1 comprend en outre un ressort 12 de rappel de la barre 9 vers sa configuration de verrouillage. Selon une réalisation, l'appui-tête 1 comprend en outre un bouton poussoir 13 monté en translation transversale sur le boîtier 4 en extrémité 19 de la barre 9 de manière à permettre un actionnement de ladite barre depuis sa configuration de verrouillage vers sa configuration de déverrouillage. Selon une réalisation représentée, les verrous 5 sont à base de matériau plastique moulé, lesdits verrous intégrant chacun une plaque 14 métallique de renfort surmoulée s'étendant en regard des ergots 6. According to the embodiment shown, the headrest 1 further comprises a spring 12 for returning the bar 9 to its locking configuration. According to one embodiment, the headrest 1 further comprises a push button 13 mounted in transverse translation on the casing 4 at the end 19 of the bar 9 so as to allow actuation of said bar from its locking configuration to its configuration of unlocking. According to one embodiment shown, the latches 5 are based on molded plastic material, said latches each incorporating a metal molded reinforcement plate 14 extending facing the lugs 6.
Selon une réalisation représentée, les crans 3 débouchent vers l'avant, ce qui permet de garantir, sous l'effet d'une force appliquée vers l'arrière par la tête de l'occupant du siège, l'application d'une contrainte favorisant l'insertion des ergots 6 de verrouillage dans les crans 3. According to an embodiment shown, the notches 3 open towards the front, which makes it possible to guarantee, under the effect of a force applied towards the rear by the head of the occupant of the seat, the application of a constraint facilitating the insertion of the locking lugs 6 into the notches 3.
Selon la première réalisation représentée : According to the first embodiment represented:
• la barre 9 est en outre montée de manière à pouvoir débattre longitudinalement entre des butées avant 15 et arrière 16 prévues dans le boîtier 4,  The bar 9 is further mounted so as to be able to debate longitudinally between the front and rear stops 16 provided in the casing 4,
· l'appui-tête comprend deux surfaces complémentaires 1 1 formées par une partie de la face externe de chacune des tiges 2,  · The headrest comprises two complementary surfaces 1 1 formed by a portion of the outer face of each of the rods 2,
• la surface d'actionnement 10 se présente, en vue de haut, sous forme d'une ligne 17 pourvue de deux encoches 18 agencées de manière à : o recevoir lesdites tiges lorsque ladite barre est en configuration de verrouillage,  The operating surface 10 is, in a top view, in the form of a line 17 provided with two notches 18 arranged to: receive said rods when said bar is in a locking configuration,
o s'écarter latéralement et longitudinalement desdites tiges lorsque ladite barre est actionnée en configuration de déverrouillage, de sorte que ladite barre effectue en outre un débattement longitudinal réalisant, du fait de l'appui entre ladite barre et les faces de réception 7, un déplacement longitudinal des verrous 5 permettant leur mise en position de déverrouillage.  o deviate laterally and longitudinally from said rods when said bar is actuated in the unlocking configuration, so that said rod also performs a longitudinal displacement resulting, because of the support between said bar and the receiving faces 7, a displacement longitudinal locks 5 allowing their setting unlocking position.
Comme visualisé en figures 5 et 6 un coulissement longitudinal se produit entre le bouton 13 et l'extrémité 19 de la barre 9 quand un appui est appliqué sur ledit bouton. Selon la deuxième réalisation, représentée en figures 7 et 8, les faces de réception 7 présentent deux surfaces complémentaires 1 1 formant deux suiveurs de came, la surface d'actionnement 10 formant une came présentant, en vue de haut, deux parties inclinées 20 par rapport à une direction transversale, lesdites parties étant agencées de manière à : As shown in Figures 5 and 6 longitudinal sliding occurs between the button 13 and the end 19 of the bar 9 when a support is applied to said button. According to the second embodiment, represented in FIGS. 7 and 8, the receiving surfaces 7 have two complementary surfaces 1 1 forming two cam followers, the actuating surface 10 forming a cam having, in a top view, two portions inclined by 20 relative to a transverse direction, said parts being arranged so as to:
• disposer les verrous 5 en position de verrouillage lorsque la barre 9 est en configuration de verrouillage,  • set the locks 5 in the locking position when the bar 9 is in the locking configuration,
• amener lesdits verrous en position de déverrouiliage lorsque ladite barre est amenée en configuration de déverrouillage.  • bring said latches in the unlock position when said bar is brought into unlocking configuration.
Selon la réalisation représentée, les parties 20 en vue de haut sont rectilignes, sachant que, de façon non représentée, on peut envisager de leur conférer une géométrie différente, notamment incurvée. Selon la réalisation représentée, sous l'effet des ressorts 8 d'actionnement des verrous 5, la barre 9 prend appui à l'opposé de la surface d'actionnement 10 sur les tiges 2. According to the embodiment shown, the parts 20 in high view are straight, knowing that, not shown, we can consider giving them a different geometry, including curved. According to the embodiment shown, under the effect of the springs 8 for actuating the locks 5, the bar 9 bears against the actuating surface 10 on the rods 2.
En variante non représentée, sous l'effet des ressorts 8 d'actionnement des verrous 5, la barre 9 prend appui à l'opposé de la surface d'actionnement 10 sur le boîtier 4. In a variant not shown, under the effect of the springs 8 for actuating the locks 5, the bar 9 bears against the actuating surface 10 on the housing 4.
En particulier, la barre 9 peut dans ce cas prendre appui sur le boîtier 4 par l'intermédiaire d'une pièce de renfort, non représentée, associée audit boîtier, ladite pièce étant notamment à base d'un matériau plastique peu sensible à la dilatation lorsqu'il est soumis à des écarts de température, par exemple un polyoxyméthylène ou un polyamide. In particular, the bar 9 can in this case be supported on the housing 4 by means of a reinforcement piece, not shown, associated with said housing, said part being in particular based on a plastic material that is not very sensitive to expansion. when subjected to temperature differences, for example a polyoxymethylene or a polyamide.

Claims

REVENDICATIONS
1 . Appui-tête (1 ) de siège de véhicule automobile, ledit appui-tête comprenant :1. Headrest (1) of a motor vehicle seat, said headrest comprising:
• deux tiges (2) parallèles latérales de liaison au siège destinées à être montées en haut de dossier dudit siège, lesdites tiges étant pourvues de crans (3) de verrouillage débouchant vers l'avant ou vers l'arrière,Two parallel lateral rods (2) for connection to the seat intended to be mounted at the top of the backrest of said seat, said rods being provided with locking catches (3) opening towards the front or towards the rear,
• un boîtier (4) en matériau plastique moulé d'absorption d'énergie en cas de choc de la tête d'un passager sur ledit appui-tête, lesdites tiges étant montées en coulissement dans ledit boîtier, A casing (4) of molded plastic material for absorbing energy in the event of the head of a passenger striking said headrest, said rods being slidably mounted in said casing,
• un dispositif de verrouillage dudit boîtier par rapport auxdites tiges selon une pluralité de positions verticales, de manière à permettre un réglage en hauteur dudit boîtier, ledit dispositif comprenant deux verrous (5) pourvus chacun d'un ergot (6) de verrouillage, lesdits verrous étant actionnables entre une position de verrouillage, où chacun desdits ergots s'engage dans un desdits crans respectif, et une position de déverrouillage, où lesdits ergots se dégagent desdits crans, ledit appui-tête étant caractérisé en ce que ledit dispositif présente en outre les caractéristiques suivantes :  A device for locking said casing with respect to said rods in a plurality of vertical positions, so as to allow height adjustment of said casing, said device comprising two bolts (5) each provided with a locking lug (6), said locks being operable between a locking position, wherein each of said lugs engages in one of said respective notches, and an unlocking position, wherein said lugs are disengaged from said notches, said headrest being characterized in that said device further comprises the following characteristics:
• lesdits verrous sont montés en coulissement longitudinal dans ledit boîtier pour passer d'une position à l'autre en étant actionnés vers leur position de verrouillage par deux ressorts (8) respectifs, chacun desdits verrous étant pourvu d'une face de réception (7), Said locks are slidably mounted longitudinally in said housing to move from one position to the other by being actuated towards their locking position by two respective springs (8), each of said locks being provided with a receiving face (7). )
• il comprend en outre une barre (9) transversale de déverrouillage, ladite barre : It further comprises a transverse unlocking bar (9), said bar:
o étant montée en coulissement transversal dans ledit boîtier de manière à pouvoir être actionnée entre une configuration de verrouillage et une configuration de déverrouillage,  o being transversely slidably mounted in said housing so as to be operable between a locking configuration and an unlocking configuration,
o recevant en appui, sous l'effet desdits ressorts, chacune desdites faces de réception de manière à glisser dessus lorsqu'elle est actionnée d'une configuration à l'autre,  o receiving in support, under the effect of said springs, each of said receiving faces so as to slide on when actuated from one configuration to another,
o étant pourvue d'une surface d'actionnement (10) coopérant avec au moins une surface complémentaire (1 1 ), lesdites surfaces étant agencées de sorte que le passage de ladite barre depuis sa configuration de verrouillage vers sa configuration de déverrouillage réalise un actionnement desdits verrous de leur position de verrouillage à leur position de déverrouillage. o being provided with an actuating surface (10) cooperating with at least one complementary surface (1 1), said surfaces being arranged so that the passage of said bar from its locking configuration to its unlocking configuration performs an actuation of said locks from their locking position to their unlocking position.
5  5
2. Appui-tête selon la revendication 1 , caractérisé en ce qu'il comprend en outre un ressort (12) de rappel de la barre (9) vers sa configuration de verrouillage.  2. Headrest according to claim 1, characterized in that it further comprises a spring (12) for returning the bar (9) to its locking configuration.
3. Appui-tête selon l'une des revendications 1 ou 2, caractérisé en ce qu'il o comprend en outre un bouton poussoir (13) monté en translation transversale sur le boîtier 3. headrest according to one of claims 1 or 2, characterized in that o further comprises a push button (13) mounted in transverse translation on the housing
(4) en extrémité (19) de la barre (9) de manière à permettre un actionnement de ladite barre depuis sa configuration de verrouillage vers sa configuration de déverrouillage. (4) at the end (19) of the bar (9) so as to allow actuation of said bar from its locking configuration to its unlocking configuration.
5 4. Appui-tête selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les verrous (5) sont à base de matériau plastique moulé, lesdits verrous intégrant chacun une plaque (14) métallique de renfort surmoulée s'étendant en regard des ergots (6). 0 5. Appui-tête selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les crans (3) débouchent vers l'avant. 4. Headrest according to any one of claims 1 to 3, characterized in that the locks (5) are based on molded plastic material, said latches each incorporating a metal plate (14) overmolded reinforcing extending facing the lugs (6). 5. Headrest according to any one of claims 1 to 4, characterized in that the notches (3) open towards the front.
6. Appui-tête selon l'une quelconque des revendications 1 à 5, caractérisé en ce que :Headrest according to one of Claims 1 to 5, characterized in that:
5 · la barre (9) est en outre montée de manière à pouvoir débattre longitudinalement entre des butées avant (15) et arrière (16) prévues dans le boîtier (4), The bar (9) is further mounted so that it can be longitudinally debated between front (15) and rear (16) stops provided in the housing (4),
® il comprend deux surfaces complémentaires (1 1 ) formées par une partie de la face externe de chacune des tiges (2), It comprises two complementary surfaces (1 1) formed by a part of the outer face of each of the rods (2),
0 · la surface d'actionnement (10) se présente, en vue de haut, sous forme d'une ligne (17) pourvue de deux encoches (18) agencées de manière à : o recevoir lesdites tiges lorsque ladite barre est en configuration de verrouillage, 0 · the actuating surface (10) is, in top view, in the form of a line (17) provided with two notches (18) arranged so as to: o receiving said rods when said bar is in locking configuration,
o s'écarter latéralement et longitudinalement desdites tiges lorsque ladite barre est actionnée en configuration de déverrouillage, de sorte que ladite barre effectue en outre un débattement longitudinal réalisant, du fait de l'appui entre ladite barre et les faces de réception (7), un déplacement longitudinal des verrous (5) permettant leur mise en position de déverrouillage.  o deviate laterally and longitudinally from said rods when said bar is actuated in the unlocking configuration, so that said bar also performs a longitudinal displacement resulting, because of the support between said bar and the receiving faces (7), a longitudinal displacement of the locks (5) allowing them to be placed in the unlocking position.
7. Appui-tête selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les faces de réception (7) présentent deux surfaces complémentaires (1 1 ) formant deux suiveurs de came, la surface d'actionnement (10) formant une came présentant, en vue de haut, deux parties inclinées (20) par rapport à une direction transversale, lesdites parties étant agencées de manière à : Headrest according to one of claims 1 to 5, characterized in that the receiving faces (7) have two complementary surfaces (1 1) forming two cam followers, the actuating surface (10) forming a cam having, in plan view, two inclined portions (20) with respect to a transverse direction, said portions being arranged to:
• disposer les verrous (5) en position de verrouillage lorsque la barre (9) est en configuration de verrouillage,  • arrange the latches (5) in the locking position when the bar (9) is in the locking configuration,
• amener lesdits verrous en position de déverrouiliage lorsque ladite barre est amenée en configuration de déverrouillage.  • bring said latches in the unlock position when said bar is brought into unlocking configuration.
8. Appui-tête selon la revendication 7, caractérisé en ce que, sous l'effet des ressorts (8) d'actionnement des verrous (5), la barre (9) prend appui à l'opposé de la surface d'actionnement (10) sur les tiges (2). 8. headrest according to claim 7, characterized in that, under the effect of the springs (8) for actuating the latches (5), the bar (9) bears against the opposite of the actuating surface (10) on the rods (2).
9. Appui-tête selon la revendication 7, caractérisé en ce que, sous l'effet des ressorts (8) d'actionnement des verrous (5), la barre (9) prend appui à l'opposé de la surface d'actionnement (10) sur le boîtier (4). 9. Headrest according to claim 7, characterized in that, under the effect of the springs (8) for actuating the latches (5), the bar (9) is supported opposite the actuating surface (10) on the housing (4).
10. Appui-tête selon la revendication 9, caractérisé en ce que la barre (9) prend appui sur le boîtier (4) par l'intermédiaire d'une pièce de renfort associée audit boîtier. 10. Headrest according to claim 9, characterized in that the bar (9) bears on the housing (4) via a reinforcing member associated with said housing.
PCT/FR2017/053196 2016-11-22 2017-11-21 Headrest for a motor vehicle seat WO2018096256A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17811646.3A EP3544853A1 (en) 2016-11-22 2017-11-21 Headrest for a motor vehicle seat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1661361A FR3058957B1 (en) 2016-11-22 2016-11-22 MOTOR VEHICLE SEAT SUPPORT
FR1661361 2016-11-22

Publications (1)

Publication Number Publication Date
WO2018096256A1 true WO2018096256A1 (en) 2018-05-31

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ID=58054252

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PCT/FR2017/053196 WO2018096256A1 (en) 2016-11-22 2017-11-21 Headrest for a motor vehicle seat

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EP (1) EP3544853A1 (en)
FR (1) FR3058957B1 (en)
WO (1) WO2018096256A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004082987A1 (en) * 2003-03-20 2004-09-30 Johnson Controls Gmbh Locking device and headrest
US20120161490A1 (en) * 2010-12-23 2012-06-28 Poehlmann Christian Motor-vehicle headrest
WO2014111645A1 (en) * 2013-01-17 2014-07-24 Centre D'etude Et De Recherche Pour L'automobile (Cera) Headrest for motor vehicle seat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004082987A1 (en) * 2003-03-20 2004-09-30 Johnson Controls Gmbh Locking device and headrest
US20120161490A1 (en) * 2010-12-23 2012-06-28 Poehlmann Christian Motor-vehicle headrest
WO2014111645A1 (en) * 2013-01-17 2014-07-24 Centre D'etude Et De Recherche Pour L'automobile (Cera) Headrest for motor vehicle seat

Also Published As

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FR3058957B1 (en) 2020-01-03
EP3544853A1 (en) 2019-10-02
FR3058957A1 (en) 2018-05-25

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