EP3490841A1 - Headrest for a motor vehicle seat - Google Patents

Headrest for a motor vehicle seat

Info

Publication number
EP3490841A1
EP3490841A1 EP17754759.3A EP17754759A EP3490841A1 EP 3490841 A1 EP3490841 A1 EP 3490841A1 EP 17754759 A EP17754759 A EP 17754759A EP 3490841 A1 EP3490841 A1 EP 3490841A1
Authority
EP
European Patent Office
Prior art keywords
bar
headrest
rods
bearings
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17754759.3A
Other languages
German (de)
French (fr)
Inventor
Laurent Georges
Grégory HERVE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tesca France SAS
Original Assignee
Tesca France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tesca France SAS filed Critical Tesca France SAS
Publication of EP3490841A1 publication Critical patent/EP3490841A1/en
Withdrawn legal-status Critical Current

Links

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

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 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 a height adjustment of said housing said device comprising a transverse bar slidably mounted in said housing, said bar being provided with two lateral lugs; locking, said bar being operable between a locking position, wherein said lugs each fit into a notch of a respective rod, and an unlocking position, wherein said lugs disengage laterally from said notches, said bar being biased towards its locking position by a spring means.
  • 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 casing with respect to said rods in a plurality of vertical positions, so as to allow height adjustment of said casing said device comprising a transverse bar slidably mounted in said casing, said bar being provided with two lateral lugs locking, said bar being operable between a locking position, wherein said lugs each fit into a notch of a respective rod, and an unlocking position, wherein said lugs disengage laterally from said notches, said bar being biased towards its locking position by a spring means,
  • Said bar is slidably mounted on said housing by means of two lateral bearings, said bearings being mounted on said housing so as to be able to debate longitudinally,
  • Said bearings are constrained by two respective springs actuating them so as to push said bar towards said rods to force the insertion of said lugs into the corresponding notches when said bar is in the locking position.
  • 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 . With the proposed arrangement, it ensures a perfect insertion of the lugs in the locking notches.
  • the dimensional dispersions of the various components and / or the dimensional variations that they may present as a result of temperature variations, leading to a retraction or expansion of their constituent materials, are rendered inoperative because the bearings are constrained by two respective springs actuating them so as to push the bar towards the rods, which has the effect of forcing the insertion of the lugs in the corresponding notches when the bar is in the locking position.
  • FIG. 1 is a partial perspective view of a headrest according to one embodiment
  • FIG. 2 is a partial horizontal sectional view of the headrest of the preceding figure
  • FIG. 3 is a partial vertical sectional view of the headrest of the preceding figures
  • Figure 4 is a perspective view of the locking device of the headrest of the preceding figures.
  • 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 energy absorption in the event of a head being hit by a passenger on said headrest, said rods being slidably mounted in said casing, said casing being covered by a cushion of headrest, not shown,
  • a device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow a height adjustment of said housing said device comprising a transverse rod slidably mounted in said housing, said bar being provided with two lugs lateral locking, said bar being operable between a locking position, wherein said lugs each fit into a notch 3 of a respective rod 2, and an unlocking position, wherein said lugs are released laterally from said notches, said bar being recalled to its locking position by spring means 8,
  • Said bar is slidably mounted on said housing by means of two lateral bearings 9, said bearings being mounted on said housing so as to be able to debate longitudinally,
  • Said bearings are constrained by two respective springs 10 actuating them so as to push said bar towards said rods to force the insertion of said lugs into the corresponding notches 3 when said bar is in the locking position.
  • the lugs 6 are derived from metal plates 1 1 overmolded by the bar 5, said bar being based on molded plastic material.
  • the lugs 6 seen from above have a convex shape to facilitate their insertion into the notches 3 by sliding effect.
  • the housing 4 is provided with front and rear internal stops 12 delimiting a sliding space of the bar 5 between the bearings 9 so as to allow longitudinal retention of said bar.
  • the stops 12 are in the form of ribs.
  • stops 12 ensures a general longitudinal retention of the bar 5 in substantially nominal position, knowing that they could not be sufficient to ensure, for the reasons explained above, a perfect insertion of the lugs 6 in the notches 3 locking.
  • the bearings 9 are in the form of blocks 13 comprising an orifice 14 for receiving the bar 5.
  • the bearings 6 have a top view of a general U shape between the branches 15 of which the rods 2 are inserted.
  • the bearings 9 are arranged facing the rods 2, which allows, insofar as the springs 10 are, therefore, also arranged opposite said rods, to optimize the force applied to the pins 6 to insert them into the notches 3.
  • 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 promoting the insertion of the lugs 6 in the locking notches 3.
  • the bar 5 is actuated in unlocking by a push button 7.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

The invention relates to a headrest (1) comprising two rods (2) provided with locking notches (3), a housing (4) in which the said rods are slidingly mounted and a locking device for locking the said housing with respect to the said rods, the said device comprising a transverse bar (5) slidingly mounted and provided with two lateral locking studs (6), the said bar being slidingly mounted on the said housing via two lateral bearings (9), the said bearings being mounted on the said housing in such a way as to be able to travel longitudinally, the said beariings being stressed by two respective springs (10) actuating them in such a way as to push the said bar towards the said rods in order to force the said studs to become inserted in the corresponding notches (3) when the said bar is in the locking position.

Description

Appui-tête de siège de véhicule automobile  Automotive headrest headrest
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,  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, ledit boîtier étant habillé par un coussin d'appui-tête,  A casing of molded plastic energy absorbing material in the event of impact of the head of a passenger on said headrest, said rods being slidably mounted in said casing, said casing being dressed by a support cushion -head,
• 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 une barre transversale montée en coulissement dans ledit boîtier, ladite barre étant pourvue de deux ergots latéraux de verrouillage, ladite barre étant actionnable entre une position de verrouillage, où lesdits ergots s'insèrent chacun dans un cran d'une tige respective, et une position de déverrouillage, où lesdits ergots se dégagent latéralement desdits crans, ladite barre étant rappelée vers sa position de verrouillage par un moyen ressort.  A device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow a height adjustment of said housing, said device comprising a transverse bar slidably mounted in said housing, said bar being provided with two lateral lugs; locking, said bar being operable between a locking position, wherein said lugs each fit into a notch of a respective rod, and an unlocking position, wherein said lugs disengage laterally from said notches, said bar being biased towards its locking position by a spring means.
Dans la mesure où le verrouillage se fait par des ergots s'insérant latéralement dans les crans de verrouillage, il est très difficile d'être assuré qu'ils sont parfaitement insérés et, de ce fait, de garantir un verrouillage efficace de la position de réglage en hauteur choisie pour le boîtier, ce qui peut présenter un danger pour l'occupant du siège. En effet, diverses causes peuvent contribuer à une insertion seulement partielle des ergots dans les crans, étant notamment liées aux dispersions dimensionnelles des différents composants de l'appui-tête, et aussi aux variations dimensionnelles qu'ils peuvent présenter suite à des variations de température conduisant à une rétraction ou à une dilatation de leurs matériaux constitutifs. Insofar as the locking is done by pins inserted laterally into the locking notches, it is very difficult to be sure that they are perfectly inserted and, thus, to ensure effective locking of the locking position. height adjustment chosen for the housing, which may present a danger for the occupant of the seat. Indeed, various causes can contribute to a only partial insertion of the lugs in the notches, being in particular related to the dimensional dispersions of the various components of the headrest, and also to the dimensional variations that they may present as a result of variations in temperature leading to retraction or expansion of their constituent materials.
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, ledit boîtier étant habillé par un coussin d'appui-tête,  A casing of molded plastic material for absorbing energy in the event of the impact of the head of a passenger on said headrest, said rods being slidably mounted in said casing, said casing being covered by a support cushion -head,
« 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 une barre transversale montée en coulissement dans ledit boîtier, ladite barre étant pourvue de deux ergots latéraux de verrouillage, ladite barre étant actionnable entre une position de verrouillage, où lesdits ergots s'insèrent chacun dans un cran d'une tige respective, et une position de déverrouillage, où lesdits ergots se dégagent latéralement desdits crans, ladite barre étant rappelée vers sa position de verrouillage par un moyen ressort,  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 a transverse bar slidably mounted in said casing, said bar being provided with two lateral lugs locking, said bar being operable between a locking position, wherein said lugs each fit into a notch of a respective rod, and an unlocking position, wherein said lugs disengage laterally from said notches, said bar being biased towards its locking position by a spring means,
ledit appui-tête présentant en outre les caractéristiques suivantes : said headrest further having the following characteristics:
· ladite barre est montée coulissante sur ledit boîtier par l'intermédiaire de deux paliers latéraux, lesdits paliers étant montés sur ledit boîtier de manière à pouvoir débattre longitudinalement,  Said bar is slidably mounted on said housing by means of two lateral bearings, said bearings being mounted on said housing so as to be able to debate longitudinally,
• lesdits paliers sont mis en contrainte par deux ressorts respectifs les actionnant de manière à pousser ladite barre vers lesdites tiges pour forcer l'insertion desdits ergots dans les crans correspondants quand ladite barre est en position de verrouillage. 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. Avec l'agencement proposé, on garantit une parfaite insertion des ergots dans les crans de verrouillage. Said bearings are constrained by two respective springs actuating them so as to push said bar towards said rods to force the insertion of said lugs into the corresponding notches when said bar is in the locking position. 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 . With the proposed arrangement, it ensures a perfect insertion of the lugs in the locking notches.
En effet, les dispersions dimensionnelles des différents composants et/ou les variations dimensionnelles qu'ils peuvent présenter suite à des variations de température, conduisant à une rétraction ou à une dilatation de leurs matériaux constitutifs, sont rendues inopérantes du fait que les paliers sont mis en contrainte par deux ressorts respectifs les actionnant de manière à pousser la barre vers les tiges, ce qui a pour effet de forcer l'insertion des ergots dans les crans correspondants quand la barre est en position de verrouillage. Indeed, the dimensional dispersions of the various components and / or the dimensional variations that they may present as a result of temperature variations, leading to a retraction or expansion of their constituent materials, are rendered inoperative because the bearings are constrained by two respective springs actuating them so as to push the bar towards the rods, which has the effect of forcing the insertion of the lugs in the corresponding notches when the bar is in the locking position.
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 en perspective partielle d'un appui-tête selon une réalisation,  FIG. 1 is a partial perspective view of a headrest according to one embodiment,
· la figure 2 est une vue en coupe horizontale partielle de l'appui-tête de la figure précédente,  FIG. 2 is a partial horizontal sectional view of the headrest of the preceding figure,
• la figure 3 est une vue en coupe verticale partielle de l'appui-tête des figures précédentes,  FIG. 3 is a partial vertical sectional view of the headrest of the preceding figures,
• la figure 4 est une vue en perspective du dispositif de verrouillage de l'appui-tête des figures précédentes.  • Figure 4 is a perspective view of the locking device of the headrest of the preceding figures.
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, • 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, ledit boîtier étant habillé par un coussin d'appui-tête, non représenté, 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 energy absorption in the event of a head being hit by a passenger on said headrest, said rods being slidably mounted in said casing, said casing being covered by a cushion of headrest, not shown,
« 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 une barre 5 transversale montée en coulissement dans ledit boîtier, ladite barre étant pourvue de deux ergots latéraux de verrouillage, ladite barre étant actionnable entre une position de verrouillage, où lesdits ergots s'insèrent chacun dans un cran 3 d'une tige 2 respective, et une position de déverrouillage, où lesdits ergots se dégagent latéralement desdits crans, ladite barre étant rappelée vers sa position de verrouillage par un moyen ressort 8,  A device for locking said housing relative to said rods in a plurality of vertical positions, so as to allow a height adjustment of said housing, said device comprising a transverse rod slidably mounted in said housing, said bar being provided with two lugs lateral locking, said bar being operable between a locking position, wherein said lugs each fit into a notch 3 of a respective rod 2, and an unlocking position, wherein said lugs are released laterally from said notches, said bar being recalled to its locking position by spring means 8,
ledit appui-tête présentant en outre les caractéristiques suivantes : said headrest further having the following characteristics:
· ladite barre est montée coulissante sur ledit boîtier par l'intermédiaire de deux paliers 9 latéraux, lesdits paliers étant montés sur ledit boîtier de manière à pouvoir débattre longitudinalement,  Said bar is slidably mounted on said housing by means of two lateral bearings 9, said bearings being mounted on said housing so as to be able to debate longitudinally,
• lesdits paliers sont mis en contrainte par deux ressorts 10 respectifs les actionnant de manière à pousser ladite barre vers lesdites tiges pour forcer l'insertion desdits ergots dans les crans 3 correspondants quand ladite barre est en position de verrouillage.  Said bearings are constrained by two respective springs 10 actuating them so as to push said bar towards said rods to force the insertion of said lugs into the corresponding notches 3 when said bar is in the locking position.
Selon la réalisation représentée, les ergots 6 sont issus de plaques 1 1 métalliques surmoulées par la barre 5, ladite barre étant à base de matériau plastique moulé. According to the embodiment shown, the lugs 6 are derived from metal plates 1 1 overmolded by the bar 5, said bar being based on molded plastic material.
Selon la réalisation représentée, les ergots 6 vus de haut présentent une forme convexe afin de de faciliter leur insertion dans les crans 3 par effet de coulisseau. Selon la réalisation représentée, le boîtier 4 est pourvu de butées 12 internes avant et arrière délimitant un espace de coulissement de la barre 5 entre les paliers 9 de manière à permettre un maintien longitudinal de ladite barre. Selon la réalisation représentée, les butées 12 sont sous forme de nervures. According to the embodiment shown, the lugs 6 seen from above have a convex shape to facilitate their insertion into the notches 3 by sliding effect. According to the embodiment shown, the housing 4 is provided with front and rear internal stops 12 delimiting a sliding space of the bar 5 between the bearings 9 so as to allow longitudinal retention of said bar. According to the embodiment shown, the stops 12 are in the form of ribs.
La présence de telles butées 12 permet d'assurer un maintien général longitudinal de la barre 5 en position sensiblement nominale, sachant qu'elles ne pourraient suffire à garantir, pour les raisons exposées plus haut, une parfaite insertion des ergots 6 dans les crans 3 de verrouillage. The presence of such stops 12 ensures a general longitudinal retention of the bar 5 in substantially nominal position, knowing that they could not be sufficient to ensure, for the reasons explained above, a perfect insertion of the lugs 6 in the notches 3 locking.
Selon la réalisation représentée, les paliers 9 sont sous forme de blocs 13 comprenant un orifice 14 de réception de la barre 5. According to the embodiment shown, the bearings 9 are in the form of blocks 13 comprising an orifice 14 for receiving the bar 5.
Selon la réalisation représentée, les paliers 6 présentent en vue de haut une forme générale de U entre les branches 15 duquel s'insèrent les tiges 2. According to the embodiment shown, the bearings 6 have a top view of a general U shape between the branches 15 of which the rods 2 are inserted.
Selon la réalisation représentée, les paliers 9 sont disposés en regard des tiges 2, ce qui permet, dans la mesure où les ressorts 10 se trouvent, de ce fait, disposés eux aussi en regard desdites tiges, d'optimiser la force appliquée aux ergots 6 pour les insérer dans les crans 3. According to the embodiment shown, the bearings 9 are arranged facing the rods 2, which allows, insofar as the springs 10 are, therefore, also arranged opposite said rods, to optimize the force applied to the pins 6 to insert them into the notches 3.
Selon la 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 dans les crans 3 de verrouillage. According to the 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 promoting the insertion of the lugs 6 in the locking notches 3.
On notera par ailleurs que, dans le cas où la tête d'un passager arrière viendrait percuter l'arrière du boîtier 4, le verrouillage subsisterait dans la mesure où les paliers 9 sont montés sur ressorts 10. Note also that, in the case where the head of a rear passenger would strike the rear of the housing 4, the lock would remain insofar as the bearings 9 are mounted on springs 10.
Selon la réalisation représentée, la barre 5 est actionnée en déverrouillage par un bouton poussoir 7. According to the embodiment shown, the bar 5 is actuated in unlocking by a push button 7.

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, ledit boîtier étant habillé par un coussin d'appui-tête, 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, said casing being covered by a cushion headrest,
• 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 une barre (5) transversale montée en coulissement dans ledit boîtier, ladite barre étant pourvue de deux ergots (6) latéraux de verrouillage, ladite barre étant actionnable entre une position de verrouillage, où lesdits ergots s'insèrent chacun dans un cran (3) d'une tige (2) respective, et une position de déverrouillage, où lesdits ergots se dégagent latéralement desdits crans, ladite barre étant rappelée vers sa position de verrouillage par un moyen ressort (8),  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 a transverse bar (5) slidably mounted in said housing, said bar being provided with two locking latches (6), said bar being operable between a locking position, wherein said lugs each fit into a notch (3) of a respective rod (2), and an unlocking position, wherein said lugs are released laterally from said notches, said bar being biased towards its locking position by a spring means (8),
ledit appui-tête étant caractérisé en ce que : said headrest being characterized in that:
• ladite barre est montée coulissante sur ledit boîtier par l'intermédiaire de deux paliers (9) latéraux, lesdits paliers étant montés sur ledit boîtier de manière à pouvoir débattre longitudinalement,  Said bar is slidably mounted on said housing by means of two lateral bearings (9), said bearings being mounted on said housing so as to be able to debug longitudinally,
• lesdits paliers sont mis en contrainte par deux ressorts (10) respectifs les actionnant de manière à pousser ladite barre vers lesdites tiges pour forcer l'insertion desdits ergots dans les crans (3) correspondants quand ladite barre est en position de verrouillage. Said bearings are constrained by two respective springs (10) actuating them so as to push said bar towards said rods to force the insertion of said lugs into the corresponding notches (3) when said bar is in the locking position.
2. Appui-tête selon la revendication 1 , caractérisé en ce que les ergots (6) sont issus de plaques (1 1 ) métalliques surmoulées par la barre (5), ladite barre étant à base de matériau plastique moulé. 2. Headrest according to claim 1, characterized in that the lugs (6) are derived from plates (1 1) overmolded metal by the bar (5), said bar being based on molded plastic material.
3. Appui-tête selon l'une des revendications 1 ou 2, caractérisé en ce que les ergots (6) vus de haut présentent une forme convexe afin de faciliter leur insertion dans les crans (3) par effet de coulisseau. 3. Headrest according to one of claims 1 or 2, characterized in that the lugs (6) seen from above have a convex shape to facilitate their insertion into the notches (3) by sliding effect.
4. Appui-tête selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le boîtier (4) est pourvu de butées (12) internes avant et arrière délimitant un espace de coulissement de la barre (5) entre les paliers (9) de manière à permettre un maintien longitudinal de ladite barre. 4. Headrest according to any one of claims 1 to 3, characterized in that the housing (4) is provided with stops (12) internal front and rear defining a sliding space of the bar (5) between the bearings (9) so as to allow longitudinal retention of said bar.
5. Appui-tête selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les paliers (9) sont sous forme de blocs (13) comprenant un orifice (14) de réception de la barre (5). 5. Headrest according to any one of claims 1 to 4, characterized in that the bearings (9) are in the form of blocks (13) comprising a hole (14) for receiving the bar (5).
6. Appui-tête selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les paliers (6) présentent en vue de haut une forme générale de U entre les branches (15) duquel s'insèrent les tiges (2). 6. Headrest according to any one of claims 1 to 5, characterized in that the bearings (6) have a top view of a general U shape between the legs (15) which are inserted in the rods (2). .
7. Appui-tête selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les paliers (9) sont disposés en regard des tiges (2). 7. Headrest according to any one of claims 1 to 6, characterized in that the bearings (9) are arranged opposite the rods (2).
8. Appui-tête selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les crans (3) débouchent vers l'avant. 8. Headrest according to any one of claims 1 to 7, characterized in that the notches (3) open towards the front.
9. Appui-tête selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la barre (5) est actionnée en déverrouillage par un bouton poussoir (7). 9. Headrest according to any one of claims 1 to 8, characterized in that the bar (5) is actuated in unlocking by a push button (7).
EP17754759.3A 2016-07-28 2017-07-27 Headrest for a motor vehicle seat Withdrawn EP3490841A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1657306A FR3054502B1 (en) 2016-07-28 2016-07-28 HEADREST FOR THE SEAT OF A MOTOR VEHICLE
PCT/FR2017/052122 WO2018020179A1 (en) 2016-07-28 2017-07-27 Headrest for a motor vehicle seat

Publications (1)

Publication Number Publication Date
EP3490841A1 true EP3490841A1 (en) 2019-06-05

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ID=57583190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17754759.3A Withdrawn EP3490841A1 (en) 2016-07-28 2017-07-27 Headrest for a motor vehicle seat

Country Status (3)

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EP (1) EP3490841A1 (en)
FR (1) FR3054502B1 (en)
WO (1) WO2018020179A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0970846A1 (en) * 1998-07-09 2000-01-12 Gestind M.B. Manifattura Di Bruzolo S.P.A A headrest for motor-vehicle
DE102010041878B4 (en) * 2010-10-01 2023-09-14 Adient Us Llc Headrest for motor vehicle seats
DE102013007633B4 (en) * 2013-05-06 2022-01-05 Grammer Aktiengesellschaft Headrest with locking device

Also Published As

Publication number Publication date
FR3054502B1 (en) 2018-08-31
WO2018020179A1 (en) 2018-02-01
FR3054502A1 (en) 2018-02-02

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