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FR2907390A1 - Tubular spindle for mounting headrest on motor vehicle's seat back, has zone presenting section of longitudinal dimension higher than its transversal dimension to present bending strength to force applied according to direction on headrest - Google Patents

Tubular spindle for mounting headrest on motor vehicle's seat back, has zone presenting section of longitudinal dimension higher than its transversal dimension to present bending strength to force applied according to direction on headrest Download PDF

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Publication number
FR2907390A1
FR2907390A1 FR0609155A FR0609155A FR2907390A1 FR 2907390 A1 FR2907390 A1 FR 2907390A1 FR 0609155 A FR0609155 A FR 0609155A FR 0609155 A FR0609155 A FR 0609155A FR 2907390 A1 FR2907390 A1 FR 2907390A1
Authority
FR
France
Prior art keywords
headrest
rod
zone
seat back
intermediate zone
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Withdrawn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
FR0609155A
Other languages
French (fr)
Inventor
Fernand Dauchez
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.)
Centre dEtude et de Recherche pour lAutomobile CERA
Original Assignee
Centre dEtude et de Recherche pour lAutomobile CERA
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 Centre dEtude et de Recherche pour lAutomobile CERA filed Critical Centre dEtude et de Recherche pour lAutomobile CERA
Priority to FR0609155A priority Critical patent/FR2907390A1/en
Publication of FR2907390A1 publication Critical patent/FR2907390A1/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Withdrawn legal-status Critical Current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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/4249—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats fixed structures, i.e. where neither the seat nor a part thereof are displaced during a crash
    • 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

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

Abstract

The spindle (2) has an intermediate zone (13) presenting an elliptic shaped reinforced section of longitudinal dimension higher than its transversal dimension to present increased bending strength to a force applied according to a longitudinal direction (L) on a headrest (1) when the spindle is mounted on the seat back. The intermediate zone occupies all the space between an end zone (11) associated to the headrest and an end zone (12) associated to the seat back, where the rod is obtained from a U shaped tube. An independent claim is also included for an air duct for receiving end zones of a tubular spindle in a sliding manner.

Description

1 L'invention concerne une tige de montage d'un appui-tête sur un dossierThe invention relates to a mounting rod of a headrest on a backrest

de siège de véhicule automobile, un élément de siège comprenant au moins une telle tige, et une gaine destinée à recevoir en coulissement une telle tige.  motor vehicle seat, a seat member comprising at least one such rod, and a sheath for receiving sliding such a rod.

Il est connu de réaliser une tige tubulaire de montage d'un appui-tête sur un dossier de siège de véhicule automobile, ladite tige présentant une zone extrême d'association à l'appui-tête, une zone extrême d'association au dossier et une zone intermédiaire, ladite zone intermédiaire présentant une section circulaire.  It is known to produce a tubular rod for mounting a headrest on a motor vehicle seat back, said rod having an extreme zone of association with the headrest, an extreme zone of association with the backrest and an intermediate zone, said intermediate zone having a circular section.

Une telle section n'est pas optimisée pour assurer une résistance optimale en cas de choc de la tête du passager sur l'appui tête, selon une direction longitudinale.  Such a section is not optimized to ensure optimum resistance in case of impact of the head of the passenger on the headrest, in a longitudinal direction.

II en résulte notamment la nécessité de prévoir des tiges de zone intermédiaire de diamètre et d'épaisseur importants. L'invention a pour but de pallier cet inconvénient.  This results in particular the need to provide intermediate zone rods of large diameter and thickness. The invention aims to overcome this disadvantage.

A cet effet, et selon un premier aspect, l'invention propose une tige tubulaire de montage d'un appui-tête sur un dossier de siège de véhicule automobile, ladite tige présentant une zone extrême d'association à l'appui-tête, une zone extrême d'association au dossier et une zone intermédiaire, au moins ladite zone intermédiaire présentant une section renforcée de dimension longitudinale supérieure à sa dimension transversale, de sorte à présenter une résistance en flexion accrue face à un effort appliqué selon une direction longitudinale sur ledit appui-tête une fois monté sur ledit dossier. Dans cette description, les termes de positionnement dans l'espace (latéral, 30 vertical, longitudinal,...) sont pris en référence au véhicule dans lequel est monté l'appui-tête.  For this purpose, and according to a first aspect, the invention proposes a tubular rod for mounting a headrest on a motor vehicle seat back, said rod having an extreme zone of association with the headrest, an end association zone at the back and an intermediate zone, at least said intermediate zone having a reinforced section of longitudinal dimension greater than its transverse dimension, so as to have an increased flexural strength against a force applied in a longitudinal direction on said headrest once mounted on said folder. In this description, the positioning terms in the space (lateral, vertical, longitudinal, ...) are taken in reference to the vehicle in which the headrest is mounted.

2907390 2 La tige selon l'invention présente une amélioration de sa résistance en flexion dans le sens longitudinal, ce qui permet d'utiliser une tige de zone intermédiaire de diamètre et d'épaisseur moindres que lorsque la section est circulaire, et donc de gagner du poids et de réaliser des économies de matière. Selon un deuxième aspect, l'invention propose un élément de siège comprenant au moins une telle tige. Selon un troisième aspect, l'invention propose une gaine destinée à recevoir en 10 coulissement une telle tige. D'autres particularités et avantages de l'invention apparaîtront dans la description qui suit, faite en référence aux figures jointes dans lesquelles : • La figure 1 est une représentation schématique en perspective d'un 15 appui-tête, selon un mode de réalisation, disposé en regard d'une gaine, • La figure 2 est une vue schématique en coupe d'une tige selon un mode de réalisation. En référence aux figures, on décrit à présent une tige 2 tubulaire de montage 20 d'un appui-tête 1 sur un dossier de siège de véhicule automobile, ladite tige présentant une zone extrême d'association à l'appui-tête 11, une zone extrême d'association au dossier 12 et une zone intermédiaire 13, au moins ladite zone intermédiaire présentant une section renforcée de dimension longitudinale supérieure à sa dimension transversale, de sorte à présenter une résistance en 25 flexion accrue face à un effort appliqué selon une direction longitudinale L sur ledit appui-tête une fois monté sur ledit dossier. Selon la réalisation de la figure 2, la section de la zone intermédiaire 13 présente au moins un plan de symétrie 3, et notamment deux plans de symétrie perpendiculaires. La figure 2 représente en outre, en hachuré, un cran réalisé dans la zone d'association 12, ladite zone d'association présentant une section générale identique à celle de la zone intermédiaire 13.The rod according to the invention has an improvement in its flexural strength in the longitudinal direction, which makes it possible to use an intermediate zone rod of lesser diameter and thickness than when the section is circular, and therefore to gain weight and save material. According to a second aspect, the invention proposes a seat element comprising at least one such rod. According to a third aspect, the invention provides a sheath for slidingly receiving such a rod. Other features and advantages of the invention will appear in the description which follows, with reference to the appended figures in which: FIG. 1 is a diagrammatic representation in perspective of a headrest, according to one embodiment, disposed opposite a sheath, • Figure 2 is a schematic sectional view of a rod according to one embodiment. Referring to the figures, there is now described a tubular rod 2 for mounting a headrest 1 on a motor vehicle seat back, said rod having an extreme zone of association with the headrest 11, a end association zone 12 and an intermediate zone 13, at least said intermediate zone having a reinforced section of longitudinal dimension greater than its transverse dimension, so as to have an increased flexural strength against a force applied in one direction longitudinal L on said headrest once mounted on said folder. According to the embodiment of FIG. 2, the section of the intermediate zone 13 has at least one plane of symmetry 3, and in particular two perpendicular planes of symmetry. FIG. 2 further shows, hatched, a notch made in the association zone 12, said association zone having a general section identical to that of the intermediate zone 13.

5 2907390 3 Selon la réalisation représentée, la section de la zone intermédiaire 13 est sensiblement elliptique.According to the embodiment shown, the section of the intermediate zone 13 is substantially elliptical.

5 Selon la réalisation représentée, les tiges 2 sont issues d'un tube conformé selon une section sensiblement elliptique, ledit tube étant recourbé en U, dont la partie centrale est incorporée à l'appui-tête 1. Les tiges 2, correspondant aux branches du U présentent donc, sur toute sa longueur, une section analogue à celle de la zone intermédiaire 13.According to the embodiment shown, the rods 2 come from a tube shaped according to a substantially elliptical section, said tube being curved in a U, whose central portion is incorporated in the headrest 1. The rods 2, corresponding to the branches U have, along its length, a section similar to that of the intermediate zone 13.

10 Selon la réalisation représentée, la zone intermédiaire 13 occupe tout l'espace compris entre les zones d'association 11,12. Selon la réalisation représentée, la tige 2 est pourvue, sur sa zone d'association 15 12, de crans 4 latéraux de blocage de la hauteur de l'appui-tête 1. En variante non représenté, les crans 4 peuvent être prévus sur la zone d'association 11. On décrit à présent un élément 10 de siège comprenant au moins une tige 2.According to the embodiment shown, the intermediate zone 13 occupies all the space between the association zones 11, 12. According to the embodiment shown, the rod 2 is provided, on its zone of association 12 12, notches 4 lateral blocking the height of the headrest 1. Alternatively not shown, the notches 4 can be provided on the zone of association 11. A seat element 10 comprising at least one rod 2 is now described.

20 Selon la réalisation représentée, l'élément 10 est formé de l'appui tête 1. Selon une variante non représentée, l'élément peut être formé du dossier de siège, l'appui-tête 1 recevant en coulissement la tige 2, de sorte à former un appui-tête à réglage intégré. Selon la réalisation représentée, l'appui-tête 1 comprend deux tiges 2 disposées de part et d'autre de son plan de symétrie vertical longitudinal, ceci de sorte à empêcher toute rotation dudit appui-tête en cas de choc.According to the embodiment shown, the element 10 is formed of the head support 1. According to a variant not shown, the element can be formed of the seat back, the headrest 1 slidably receiving the rod 2, so as to form a headrest with integrated adjustment. According to the embodiment shown, the headrest 1 comprises two rods 2 disposed on either side of its longitudinal vertical symmetry plane, so as to prevent any rotation of said headrest in case of impact.

30 En variante non représentée, le dossier de siège peut comprendre deux tiges 2 issues de sa partie supérieure pour recevoir l'appui-tête 1, lesdites tiges pouvant être soudées en haut d'armature de dossier.In a variant not shown, the seat back can comprise two rods 2 coming from its upper part to receive the headrest 1, said rods being welded to the top of the backrest frame.

25 2907390 4 On décrit à présent une gaine 5 destinée à recevoir en coulissement une zone d'association 11,12 d'une tige dont au moins la section externe de ladite zone d'association est analogue à celle de la zone intermédiaire 13. En particulier, la gaine 5 est destinée à recevoir une tige présentant une section analogue sur 5 toute sa longueur. La gaine 5 présente une section interne de dimension longitudinale supérieure à sa dimension transversale. La gaine 5 peut comprendre un moyen de blocage, non représenté, pouvant être inséré dans un cran 4 de sorte à permettre un blocage de la position de la 10 tige 2 dans ladite gaine. De façon non représentée, lorsque la tige 2 ne comprend pas de crans 4, la gaine 5 peut comprendre un moyen de blocage par friction du coulissement de ladite tige. 15A sheath 5 is now described for slidably receiving an association zone 11, 12 of a shaft of which at least the outer section of said association zone is similar to that of the intermediate zone 13. In particular, the sheath 5 is intended to receive a rod having a similar section over its entire length. The sheath 5 has an internal section of longitudinal dimension greater than its transverse dimension. The sheath 5 may comprise a locking means, not shown, that can be inserted into a notch 4 so as to allow the position of the rod 2 to be locked in said sheath. In a manner not shown, when the rod 2 does not include notches 4, the sheath 5 may comprise a friction locking means of the sliding of said rod. 15

Claims (10)

REVENDICATIONS 1. Tige (2) tubulaire de montage d'un appui-tête (1) sur un dossier de siège de véhicule automobile, ladite tige présentant une zone extrême d'association à l'appui-tête (11), une zone extrême d'association au dossier (12) et une zone intermédiaire (13), ladite tige étant caractérisée en ce que au moins ladite zone intermédiaire présente une section renforcée de dimension longitudinale supérieure à sa dimension transversale, de sorte à présenter une résistance en flexion accrue face à un effort appliqué selon une direction longitudinale (L) sur ledit appui-tête une fois monté sur ledit dossier.  1. stem (2) tubular mounting a headrest (1) on a motor vehicle seat back, said rod having an extreme zone of association with the headrest (11), an extreme zone d association with the backrest (12) and an intermediate zone (13), said rod being characterized in that at least said intermediate zone has a reinforced section of longitudinal dimension greater than its transverse dimension, so as to have an increased flexural strength in the face at a force applied in a longitudinal direction (L) on said headrest once mounted on said folder. 2. Tige selon la revendication 1, la section de la zone intermédiaire (13) présentant au moins un plan de symétrie.  2. Rod according to claim 1, the section of the intermediate zone (13) having at least one plane of symmetry. 3. Tige selon la revendication 1 ou 2, la section de la zone intermédiaire (13) étant sensiblement elliptique.  3. Rod according to claim 1 or 2, the section of the intermediate zone (13) being substantially elliptical. 4. Tige selon l'une quelconque des revendications 1 à 3, la zone intermédiaire 20 (13) occupant tout l'espace compris entre les zones d'association (11,12).  4. Rod according to any one of claims 1 to 3, the intermediate zone 20 (13) occupying the entire space between the association zones (11,12). 5. Tige selon l'une quelconque des revendications 1 à 4, ladite tige étant pourvue, sur une de ses zones d'association (11,12), de crans (4) latéraux de blocage de la hauteur de l'appui-tête (1).  5. Rod according to any one of claims 1 to 4, said rod being provided on one of its association zones (11,12), notches (4) lateral blocking the height of the headrest (1). 6. Tige selon l'une quelconque des revendications 1 à 5, ladite tige présentant, sur toute sa longueur, une section analogue à celle de la zone intermédiaire (13). 30  6. Rod according to any one of claims 1 to 5, said rod having, over its entire length, a section similar to that of the intermediate zone (13). 30 7. Elément (10) de siège comprenant au moins une tige (2) selon l'une quelconque des revendications 1 à 6, ledit élément étant formé de l'appui tête (1). 25 2907390 6  7. Element (10) of seat comprising at least one rod (2) according to any one of claims 1 to 6, said member being formed of the headrest (1). 25 2907390 6 8. Elément (10) comprenant au moins une tige (2) selon l'une quelconque des revendications 1 à 6, ledit élément étant formé du dossier de siège.  8. Element (10) comprising at least one rod (2) according to any one of claims 1 to 6, said member being formed of the seat back. 9. Elément (10) selon l'une des revendications 7 ou 8, comprenant deux tiges 5 (2) disposées de part et d'autre de son plan de symétrie vertical longitudinal.  9. Element (10) according to one of claims 7 or 8, comprising two rods 5 (2) disposed on either side of its longitudinal vertical plane of symmetry. 10. Gaine (5) destinée à recevoir en coulissement une zone d'association (11,12) d'une tige selon la revendication 6, ladite gaine présentant une section interne de dimension longitudinale supérieure à sa dimension transversale. 10  10. Sheath (5) for slidingly receiving a zone of association (11,12) of a rod according to claim 6, said sheath having an inner section of longitudinal dimension greater than its transverse dimension. 10
FR0609155A 2006-10-18 2006-10-18 Tubular spindle for mounting headrest on motor vehicle's seat back, has zone presenting section of longitudinal dimension higher than its transversal dimension to present bending strength to force applied according to direction on headrest Withdrawn FR2907390A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0609155A FR2907390A1 (en) 2006-10-18 2006-10-18 Tubular spindle for mounting headrest on motor vehicle's seat back, has zone presenting section of longitudinal dimension higher than its transversal dimension to present bending strength to force applied according to direction on headrest

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0609155A FR2907390A1 (en) 2006-10-18 2006-10-18 Tubular spindle for mounting headrest on motor vehicle's seat back, has zone presenting section of longitudinal dimension higher than its transversal dimension to present bending strength to force applied according to direction on headrest

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FR2907390A1 true FR2907390A1 (en) 2008-04-25

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FR0609155A Withdrawn FR2907390A1 (en) 2006-10-18 2006-10-18 Tubular spindle for mounting headrest on motor vehicle's seat back, has zone presenting section of longitudinal dimension higher than its transversal dimension to present bending strength to force applied according to direction on headrest

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008026815A1 (en) * 2008-06-05 2009-12-10 GM Global Technology Operations, Inc., Detroit Vehicle seat has headrest, and headrest pipe, which is adjusted in minimum breaking resistance and minimum buckling resistance during collision force
FR3028813A1 (en) * 2014-11-25 2016-05-27 Centre D'etude Et De Rech Pour L'automobile (Cera) ASSEMBLY SYSTEM FOR A HEADREST FOR A MOTOR VEHICLE SEAT
FR3031703A1 (en) * 2015-01-20 2016-07-22 Cera Tsc HEADREST FOR THE SEAT OF A MOTOR VEHICLE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327591A1 (en) * 1983-07-30 1985-02-07 Eugen Otto 4010 Hilden Butz Headrest for motor vehicle seats
DE3636932C1 (en) * 1986-10-30 1988-03-10 Butz Eugen Otto Headrests for motor vehicle seats
DE4443527A1 (en) * 1994-12-07 1996-06-13 Daimler Benz Ag Head support for headrest of vehicle seat
DE19856981A1 (en) * 1998-12-10 2000-06-15 Bayerische Motoren Werke Ag Headrest for seat of motor vehicle has cross sectional thickening, diametrally extending crosspiece, or insert with longitudinal ribs provided in cavity of support tube, extending from free end at least as far as centre section
DE10013817A1 (en) * 2000-03-21 2001-09-27 Lear Corp Headrest for motor vehicle has guide rods with wall thickness which at least over part of length with headrest mounted is greater in direction of motion than wall thickness at right angles to direction of motion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327591A1 (en) * 1983-07-30 1985-02-07 Eugen Otto 4010 Hilden Butz Headrest for motor vehicle seats
DE3636932C1 (en) * 1986-10-30 1988-03-10 Butz Eugen Otto Headrests for motor vehicle seats
DE4443527A1 (en) * 1994-12-07 1996-06-13 Daimler Benz Ag Head support for headrest of vehicle seat
DE19856981A1 (en) * 1998-12-10 2000-06-15 Bayerische Motoren Werke Ag Headrest for seat of motor vehicle has cross sectional thickening, diametrally extending crosspiece, or insert with longitudinal ribs provided in cavity of support tube, extending from free end at least as far as centre section
DE10013817A1 (en) * 2000-03-21 2001-09-27 Lear Corp Headrest for motor vehicle has guide rods with wall thickness which at least over part of length with headrest mounted is greater in direction of motion than wall thickness at right angles to direction of motion

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008026815A1 (en) * 2008-06-05 2009-12-10 GM Global Technology Operations, Inc., Detroit Vehicle seat has headrest, and headrest pipe, which is adjusted in minimum breaking resistance and minimum buckling resistance during collision force
FR3028813A1 (en) * 2014-11-25 2016-05-27 Centre D'etude Et De Rech Pour L'automobile (Cera) ASSEMBLY SYSTEM FOR A HEADREST FOR A MOTOR VEHICLE SEAT
EP3025905A1 (en) * 2014-11-25 2016-06-01 Cera TSC Headrest mounting system for a motor vehicle seat
FR3031703A1 (en) * 2015-01-20 2016-07-22 Cera Tsc HEADREST FOR THE SEAT OF A MOTOR VEHICLE
EP3048006A1 (en) 2015-01-20 2016-07-27 Cera TSC Headrest for a motor vehicle seat

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