FR2924993A1 - Notched metallic rod receiving sheath for motor vehicle, has locking edge with vertical end wall of three millimeter height so as to take support against rod in non-notched zone on support zone of similar height - Google Patents

Notched metallic rod receiving sheath for motor vehicle, has locking edge with vertical end wall of three millimeter height so as to take support against rod in non-notched zone on support zone of similar height Download PDF

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Publication number
FR2924993A1
FR2924993A1 FR0708760A FR0708760A FR2924993A1 FR 2924993 A1 FR2924993 A1 FR 2924993A1 FR 0708760 A FR0708760 A FR 0708760A FR 0708760 A FR0708760 A FR 0708760A FR 2924993 A1 FR2924993 A1 FR 2924993A1
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France
Prior art keywords
rod
zone
notched
sheath
sleeve
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Granted
Application number
FR0708760A
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French (fr)
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FR2924993B1 (en
Inventor
Xavier Bonfils
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Cera TSC
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Centre dEtude et de Recherche pour lAutomobile CERA
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Priority to FR0708760A priority Critical patent/FR2924993B1/en
Publication of FR2924993A1 publication Critical patent/FR2924993A1/en
Application granted granted Critical
Publication of FR2924993B1 publication Critical patent/FR2924993B1/en
Expired - Fee Related legal-status Critical Current
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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

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

Abstract

The sheath (1) has a reception sleeve for receiving a notched metallic rod (2) in a sliding manner. A slide (3), made of plastic material, is mounted movably and radially, and includes a locking edge (4) that cooperates with a notch of the rod so as to lock the rod in sliding. The slide is constraint towards the sleeve by elastic constraint unit (6) so as to constraint the sleeve in support against the rod in non-notched zone. The edge includes a vertical end wall (7) of 3 millimeter height so as to take support against the rod in a non-notched zone on a support zone (8) of similar height. Independent claims are also included for the following: (1) a mounting rod for mounting a head rest on a backrest of a seat of motor vehicle (2) a seat having a mounting assembly.

Description

1 L'invention concerne une gaine de réception en coulissement d'une tige d'association d'un appui-tête à un dossier de siège de véhicule automobile, une tige destinée à être reçue par une telle gaine, un ensemble de montage d'un appui-tête comprenant une telle gaine et une telle tige ainsi qu'un siège comprenant un tel ensemble. The invention relates to a sliding receiving sheath of a connecting rod of a headrest to a motor vehicle seat back, a rod intended to be received by such a sheath, a mounting assembly of a a headrest comprising such a sheath and such a rod and a seat comprising such an assembly.

II est connu de réaliser une gaine de réception en coulissement d'une tige métallique crantée, d'association d'un appui-tête à un dossier de siège de véhicule automobile, ladite gaine comprenant un manchon de réception de ladite tige en coulissement et, solidaire dudit manchon, un tiroir à base de matière plastique monté mobile radialement, ledit tiroir comprenant un bord de blocage destiné à coopérer avec au moins un cran de ladite tige de sorte à la bloquer en coulissement, ledit tiroir étant contraint vers ledit manchon par un moyen de contrainte élastique de sorte à le contraindre en appui contre ladite tige en zone non crantée et à permettre la coopération entre ledit bord et ledit cran lorsqu'ils sont en vis à vis. It is known to produce a sliding receiving sheath of a toothed metal rod, a combination of a headrest to a motor vehicle seatback, said sheath comprising a sleeve for receiving said sliding rod and, integral with said sleeve, a drawer made of a plastic material mounted radially movable, said drawer comprising a locking edge intended to cooperate with at least one notch of said rod so as to lock it in sliding, said drawer being forced towards said sleeve by a means of elastic stress so as to constrain bearing against said rod in non-notched area and to allow cooperation between said edge and said notch when they are opposite.

Le bord de blocage comprend usuellement une paroi extrême de hauteur maximale de 1,5 mm environ. En zone non crantée de la tige, le bord de blocage prend appui contre la tige sur une zone d'appui de hauteur inférieure - ou égale dans le cas où la paroi extrême est inscrite dans un plan vertical - à la hauteur de la paroi extrême. The locking edge usually comprises an end wall with a maximum height of about 1.5 mm. In the notched zone of the rod, the locking edge bears against the rod on a support zone of lower height - or equal in the case where the end wall is inscribed in a vertical plane - at the height of the extreme wall. .

25 Le bord de blocage peut notamment être sous la forme d'une épingle métallique intégrée au tiroir. The locking edge may in particular be in the form of a metal pin integrated in the drawer.

En zone non crantée de la tige, le bord de blocage est en appui sur la tige sur une zone d'appui de faible étendue, donc avec une pression importante. La 30 zone d'appui est quasiment ponctuelle dans le cas d'une épingle cylindrique en appui sur une tige cylindrique (appui d'un cylindre sur un autre, les cylindres étant disposés perpendiculairement l'un par rapport à l'autre).20 2 Il en résulte une abrasion importante de la tige lors de son coulissement et l'apparition d'une rayure de la tige au fil du temps. In non-notched area of the rod, the locking edge is supported on the rod on a support area of small extent, so with significant pressure. The bearing zone is almost punctual in the case of a cylindrical pin resting on a cylindrical rod (support of a cylinder on another, the cylinders being arranged perpendicularly relative to each other). 2 This results in significant abrasion of the rod during its sliding and the appearance of a scratch of the rod over time.

L'épingle peut être enrobée de matière plastique, de sorte à réaliser un appui de la tige contre ladite matière plastique et à limiter les phénomènes d'abrasion et de rayure de la tige par l'épingle lors de son coulissement au fil du temps. The pin can be coated with plastic material, so as to make a support of the rod against said plastic material and to limit the abrasion phenomena and scratch of the rod by the pin during its sliding over time.

II est connu de réaliser des tiges pourvues d'une peinture d'aspect, remplaçant le dépôt de revêtements métalliques tels que du chrome, qui sont très coûteux et néfastes d'un point de vue environnemental. It is known to produce rods provided with an appearance paint, replacing the deposition of metal coatings such as chromium, which are very expensive and environmentally harmful.

Avec une telle réalisation, on observe, malgré la présence de matière plastique enrobant l'épingle, une rayure de la tige se traduisant par un grattage de la peinture, qui présente une moindre dureté qu'un revêtement métallique, ceci étant dû à la faible étendue de la zone d'appui. With such an embodiment, it is observed, despite the presence of plastic material encapsulating the pin, a scratch of the rod resulting in a scraping of the paint, which has a less hardness than a metal coating, this being due to the low extent of the support area.

L'invention a pour but de proposer un agencement évitant la rayure de la tige. The object of the invention is to propose an arrangement that avoids scratching the rod.

A cet effet, et selon un premier aspect, l'invention propose une gaine de réception en coulissement d'une tige métallique crantée, d'association d'un appui-tête à un dossier de siège de véhicule automobile, ladite gaine comprenant un manchon de réception de ladite tige en coulissement et, solidaire dudit manchon, un tiroir à base de matière plastique monté mobile radialement, ledit tiroir comprenant un bord de blocage destiné à coopérer avec au moins un cran de ladite tige de sorte à la bloquer en coulissement, ledit tiroir étant contraint vers ledit manchon par un moyen de contrainte élastique, de sorte à le contraindre en appui contre ladite tige en zone non crantée et à permettre la coopération entre ledit bord et ledit cran lorsqu'ils sont en vis à vis, ledit bord de blocage comprenant une paroi extrême verticale de hauteur minimale de 3 mm, de sorte à pouvoir prendre appui contre ladite tige en zone non crantée sur une zone d'appui de hauteur similaire. 3 Dans cette description, les termes de positionnement dans l'espace (vertical, hauteur,...) sont pris en référence à la gaine disposée dans le véhicule. Les termes sont considérés de façon approchée, sachant par exemple que le terme vertical est à interpréter comme sensiblement vertical . L'agencement proposé permet de disposer d'une surface d'appui étendue permettant, par répartition de la force exercée par le moyen de contrainte, d'éviter la rayure observée dans les réalisations de l'art antérieur. For this purpose, and according to a first aspect, the invention provides a sliding receiving sheath of a toothed metal rod, of association of a headrest to a motor vehicle seat back, said sheath comprising a sleeve receiving said sliding rod and, integral with said sleeve, a radially movable plastic-based spool, said spool comprising a locking edge adapted to cooperate with at least one notch of said rod so as to lock it in sliding, said slide being constrained towards said sleeve by a means of elastic stress, so as to constrain it in abutment against said rod in a non-notched zone and to allow the cooperation between said edge and said notch when they are opposite, said edge blocking device comprising a vertical end wall with a minimum height of 3 mm, so that it can bear against said rod in a non-notched zone on a support zone of similar height. In this description, the terms of positioning in space (vertical, height, ...) are taken with reference to the sheath disposed in the vehicle. The terms are considered in an approximate way, knowing for example that the vertical term is to be interpreted as substantially vertical. The proposed arrangement makes it possible to have an extended bearing surface making it possible, by distribution of the force exerted by the stressing means, to avoid the scratching observed in the embodiments of the prior art.

10 En outre, la hauteur importante du bord de blocage lui confère une résistance mécanique qui peut permettre d'éviter l'utilisation d'une épingle ou d'un renfort. In addition, the large height of the locking edge gives it a mechanical strength that can avoid the use of a pin or a reinforcement.

Selon d'autres aspects, l'invention propose une tige destinée à être reçue par une telle gaine, un ensemble de montage d'un appui-tête comprenant une telle 15 gaine et une telle tige ainsi qu'un siège comprenant un tel ensemble. According to other aspects, the invention proposes a rod intended to be received by such a sheath, a mounting assembly of a headrest comprising such a sheath and such a rod and a seat comprising such an assembly.

D'autres particularités et avantages de l'invention apparaîtront dans la description qui suit, faite en référence à la figure jointe qui est une vue schématique en coupe partielle d'un ensemble comprenant une gaine et une 20 tige selon une réalisation, le bord de blocage étant en appui contre la tige en zone non crantée. Other features and advantages of the invention will appear in the description which follows, made with reference to the attached figure which is a schematic partial sectional view of an assembly comprising a sheath and a rod according to one embodiment, the edge of blocking being in abutment against the rod in a non-notched zone.

En référence à la figure, on décrit une gaine 1 de réception en coulissement d'une tige 2 métallique crantée, d'association d'un appui-tête à un dossier de 25 siège de véhicule automobile, ladite gaine comprenant un manchon de réception de ladite tige en coulissement et, solidaire dudit manchon, un tiroir 3 à base de matière plastique monté mobile radialement, ici par translation, ledit tiroir comprenant un bord de blocage 4 destiné à coopérer avec au moins un cran 5 de ladite tige de sorte à la bloquer en coulissement, ledit tiroir étant 30 contraint vers ledit manchon par un moyen de contrainte élastique 6, ici sous forme d'un ressort, de sorte à le contraindre en appui contre ladite tige en zone non crantée et à permettre la coopération entre ledit bord et ledit cran lorsqu'ils sont en vis à vis, ledit bord de blocage comprenant une paroi extrême verticale5 7 de hauteur minimale de 3 mm, de sorte à pouvoir prendre appui contre ladite tige en zone non crantée sur une zone d'appui 8 de hauteur similaire. Referring to the figure, there is disclosed a sheath 1 slidably receiving a notched metal rod 2, a combination of a headrest to a motor vehicle seat back, said sheath comprising a receiving sleeve of said sliding rod and, secured to said sleeve, a slide 3 made of plastics material movable radially, here by translation, said slide comprising a locking edge 4 intended to cooperate with at least one notch 5 of said rod so as to slidably blocking, said spool being constrained towards said sleeve by an elastic constraint means 6, here in the form of a spring, so as to constrain it to bear against said rod in a non-notched zone and to allow the co-operation between said edge and said notch when facing each other, said locking edge comprising a vertical end wall 5 7 of minimum height of 3 mm, so as to be able to bear against said rod in a non-detent zone on a support zone 8 of similar height.

En variante non représentée, le tiroir 3 peut être monté mobile en rotation. Selon la réalisation représentée, la paroi extrême 7 s'inscrit dans un plan vertical, la zone d'appui 8 correspondant à une ligne verticale de faible épaisseur lorsque la tige 2 est cylindrique. In variant not shown, the slide 3 can be rotatably mounted. According to the embodiment shown, the end wall 7 is in a vertical plane, the bearing zone 8 corresponding to a vertical line of small thickness when the rod 2 is cylindrical.

10 Une tige 2 de montage d'un appui-tête sur un dossier de siège de véhicule automobile, destinée à être reçue en coulissement par une gaine 1, comprend au moins un cran 5 de hauteur minimale de 3 mm, de sorte à pouvoir coopérer avec le bord de blocage 4. A rod 2 for mounting a headrest on a motor vehicle seat back, intended to be slidably received by a sheath 1, comprises at least one notch 5 with a height of at least 3 mm, so that it can cooperate with the locking edge 4.

15 Selon une réalisation, la tige 2 comprend une couche d'aspect de dureté inférieure à 4 H selon la norme ISO15184. According to one embodiment, the rod 2 comprises an appearance layer of hardness less than 4 H according to the ISO15184 standard.

Selon une réalisation, la couche d'aspect est à base de peinture, notamment hydrosoluble, afin de minimiser les nuisances environnementales. Selon une réalisation, la tige 2 présente une section sensiblement circulaire, ou ovale, de sorte que la zone d'appui 8 soit sensiblement une ligne verticale. In one embodiment, the appearance layer is based on paint, especially water-soluble, to minimize environmental nuisance. According to one embodiment, the rod 2 has a substantially circular section, or oval, so that the support zone 8 is substantially a vertical line.

On décrit à présent un ensemble de montage d'un appui-tête à un dossier de 25 siège de véhicule automobile ledit ensemble comprenant une gaine 1 et une tige 2, le bord de blocage 4 prenant appui contre ladite tige en zone non crantée sur une zone d'appui 8 de hauteur minimale de 3 mm. We now describe a mounting assembly of a headrest to a motor vehicle seatback said assembly comprising a sheath 1 and a rod 2, the locking edge 4 bearing against said rod in a non-notched area on a support zone 8 with a minimum height of 3 mm.

On décrit à présent un siège comprenant un tel ensemble, la tige 2 étant issue 30 d'un coussin d'appui-tête, la gaine 1 étant incorporée au dossier dudit siège.We now describe a seat comprising such an assembly, the rod 2 being derived from a headrest cushion, the sheath 1 being incorporated in the backrest of said seat.

20 En variante, le siège comprend un tel ensemble, la tige 2 étant issue du dossier dudit siège, la gaine 1 étant incorporée à un coussin d'appui-tête, de sorte à disposer d'un appui-tête à réglage intégré . Alternatively, the seat comprises such an assembly, the rod 2 being derived from the backrest of said seat, the sheath 1 being incorporated in a headrest cushion, so as to have a headrest with integrated adjustment.

Claims (9)

REVENDICATIONS 1. Gaine (1) de réception en coulissement d'une tige (2) métallique crantée, d'association d'un appui-tête à un dossier de siège de véhicule automobile, ladite gaine comprenant un manchon de réception de ladite tige en coulissement et, solidaire dudit manchon, un tiroir (3) à base de matière plastique monté mobile radialement, ledit tiroir comprenant un bord de blocage (4) destiné à coopérer avec au moins un cran (5) de ladite tige de sorte à la bloquer en coulissement, ledit tiroir étant contraint vers ledit manchon par un moyen de contrainte élastique (6) de sorte à le contraindre en appui contre ladite tige en zone non crantée et à permettre la coopération entre ledit bord et ledit cran lorsqu'ils sont en vis à vis, ladite gaine étant caractérisée en ce que ledit bord de blocage comprend une paroi extrême verticale (7) de hauteur minimale de 3 mm, de sorte à pouvoir prendre appui contre ladite tige en zone non crantée sur une zone d'appui (8) de hauteur similaire. 1. Sleeve (1) slidably receiving a rod (2) toothed metal, a combination of a headrest to a motor vehicle seat back, said sleeve comprising a sleeve for receiving said sliding rod and, integral with said sleeve, a drawer (3) made of plastics material mounted radially, said drawer comprising a locking edge (4) intended to cooperate with at least one notch (5) of said rod so as to block it in sliding, said slide being constrained towards said sleeve by an elastic constraint means (6) so as to constrain it in abutment against said rod in a non-notched zone and to allow the cooperation between said edge and said notch when they are screwed to screw, said sheath being characterized in that said locking edge comprises a vertical end wall (7) with a minimum height of 3 mm, so as to be able to bear against said rod in a non-notched zone on a support zone (8) of height imilaire. 2. Gaine selon la revendication 1, caractérisée en ce que la paroi extrême (7) s'inscrit dans un plan vertical. 2. Sheath according to claim 1, characterized in that the end wall (7) is in a vertical plane. 3. Tige (2) de montage d'un appui-tête sur un dossier de siège de véhicule automobile, destinée à être reçue en coulissement par une gaine selon la revendication 1 ou 2, caractérisée en ce qu'elle comprend au moins un cran (5) de hauteur minimale de 3 mm, de sorte à pouvoir coopérer avec le bord de blocage (4). 3. Rod (2) for mounting a headrest on a motor vehicle seat back, intended to be slidably received by a sheath according to claim 1 or 2, characterized in that it comprises at least one notch (5) minimum height of 3 mm, so as to cooperate with the locking edge (4). 4. Tige selon la revendication 3, caractérisée en ce qu'elle comprend une couche d'aspect de dureté inférieure à 4H. 4. Rod according to claim 3, characterized in that it comprises an appearance layer of hardness less than 4H. 5. Tige selon la revendication 4, caractérisée en ce que la couche d'aspect est à base de peinture. 7 5. Rod according to claim 4, characterized in that the appearance layer is based on paint. 7 6. Tige selon l'une quelconque des revendications 3 à 5, caractérisée en ce qu'elle présente une section sensiblement circulaire. 6. Rod according to any one of claims 3 to 5, characterized in that it has a substantially circular section. 7. Ensemble de montage d'un appui-tête à un dossier de siège de véhicule automobile, ledit ensemble comprenant une gaine selon la revendication 1 ou 2 et une tige selon l'une quelconque des revendications 3 à 6, ledit ensemble étant caractérisé le bord de blocage (4) prend appui contre ladite tige en zone non crantée sur une zone d'appui (8) de hauteur minimale de 3 mm. 7. An assembly for mounting a headrest to a motor vehicle seat back, said assembly comprising a sheath according to claim 1 or 2 and a rod according to any one of claims 3 to 6, said assembly being characterized locking edge (4) bears against said rod in a non-notched zone on a support zone (8) with a minimum height of 3 mm. 8. Siège comprenant un ensemble la revendication 7, caractérisé en ce que la tige (2) est issue d'un coussin d'appui-tête, la gaine (1) étant incorporée au dossier dudit siège. 8. Seat comprising an assembly claim 7, characterized in that the rod (2) is derived from a headrest cushion, the sheath (1) being incorporated in the backrest of said seat. 9. Siège comprenant un ensemble selon la revendication 7, caractérisé en ce que la tige (2) est issue du dossier dudit siège, la gaine (1) étant incorporée à un coussin d'appui-tête. 9. Seat comprising an assembly according to claim 7, characterized in that the rod (2) is derived from the backrest of said seat, the sheath (1) being incorporated in a headrest cushion.
FR0708760A 2007-12-14 2007-12-14 RECEPTION SHEATH IN SLIDING A CRANTED METAL ROD Expired - Fee Related FR2924993B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0708760A FR2924993B1 (en) 2007-12-14 2007-12-14 RECEPTION SHEATH IN SLIDING A CRANTED METAL ROD

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Application Number Priority Date Filing Date Title
FR0708760A FR2924993B1 (en) 2007-12-14 2007-12-14 RECEPTION SHEATH IN SLIDING A CRANTED METAL ROD

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FR2924993A1 true FR2924993A1 (en) 2009-06-19
FR2924993B1 FR2924993B1 (en) 2010-10-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2951414A1 (en) * 2009-10-21 2011-04-22 Cera Device for slidably receiving and locking assembling rod of head-rest of seat of motor vehicle, has end face connected with horizontal lower and upper faces of lug along sharp and chamfered edges, respectively

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545618A (en) * 1984-02-22 1985-10-08 Tachikawa Spring Co., Ltd. Head-rest device
FR2671587A1 (en) * 1991-01-10 1992-07-17 Itw De France Mechanism for locking a notched rod
DE19621270A1 (en) * 1996-05-25 1997-11-27 Grammer Ag Headrest locking device
EP0875417A1 (en) * 1997-04-29 1998-11-04 PETER BUTZ GmbH & Co Verwaltungs-KG Head rest for vehicle seat
FR2849813A1 (en) * 2003-01-15 2004-07-16 Faurecia Sieges Automobile Head-rest device for vehicle seat, has mobile screw-locking device moving a head-rest to retracted position and resetting head-rest from retracted position to stopping position when in unobtrusive and active positions, respectively
JP2005287738A (en) * 2004-03-31 2005-10-20 T S Tec Kk Sliding component for vehicle and headrest for vehicle seat
FR2888794A1 (en) * 2005-07-20 2007-01-26 Renault Sas SYSTEM FOR ADJUSTING AND BLOCKING IN TRANSLATION OF A ROD, IN PARTICULAR FOR A HEADREST FOR A MOTOR VEHICLE

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545618A (en) * 1984-02-22 1985-10-08 Tachikawa Spring Co., Ltd. Head-rest device
FR2671587A1 (en) * 1991-01-10 1992-07-17 Itw De France Mechanism for locking a notched rod
DE19621270A1 (en) * 1996-05-25 1997-11-27 Grammer Ag Headrest locking device
EP0875417A1 (en) * 1997-04-29 1998-11-04 PETER BUTZ GmbH & Co Verwaltungs-KG Head rest for vehicle seat
FR2849813A1 (en) * 2003-01-15 2004-07-16 Faurecia Sieges Automobile Head-rest device for vehicle seat, has mobile screw-locking device moving a head-rest to retracted position and resetting head-rest from retracted position to stopping position when in unobtrusive and active positions, respectively
JP2005287738A (en) * 2004-03-31 2005-10-20 T S Tec Kk Sliding component for vehicle and headrest for vehicle seat
FR2888794A1 (en) * 2005-07-20 2007-01-26 Renault Sas SYSTEM FOR ADJUSTING AND BLOCKING IN TRANSLATION OF A ROD, IN PARTICULAR FOR A HEADREST FOR A MOTOR VEHICLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2951414A1 (en) * 2009-10-21 2011-04-22 Cera Device for slidably receiving and locking assembling rod of head-rest of seat of motor vehicle, has end face connected with horizontal lower and upper faces of lug along sharp and chamfered edges, respectively

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