FR2926266A1 - Metallic ring threaded shank blocking device for seat of motor vehicle, has reinforcement piece uncovering part of vertical zone of edge such that shank is in support against part, where piece is realized in same material of return unit - Google Patents

Metallic ring threaded shank blocking device for seat of motor vehicle, has reinforcement piece uncovering part of vertical zone of edge such that shank is in support against part, where piece is realized in same material of return unit Download PDF

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Publication number
FR2926266A1
FR2926266A1 FR0800239A FR0800239A FR2926266A1 FR 2926266 A1 FR2926266 A1 FR 2926266A1 FR 0800239 A FR0800239 A FR 0800239A FR 0800239 A FR0800239 A FR 0800239A FR 2926266 A1 FR2926266 A1 FR 2926266A1
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FR
France
Prior art keywords
edge
piece
rod
motor vehicle
shank
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.)
Granted
Application number
FR0800239A
Other languages
French (fr)
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FR2926266B1 (en
Inventor
Xavier Zapata
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 FR0800239A priority Critical patent/FR2926266B1/en
Priority to PCT/FR2009/000011 priority patent/WO2009112665A2/en
Publication of FR2926266A1 publication Critical patent/FR2926266A1/en
Application granted granted Critical
Publication of FR2926266B1 publication Critical patent/FR2926266B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B60N2/897—Head-rests with sleeves located in the back-rest for guiding the rods of the head-rest

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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 device (1) has a box (4) including a blocking edge (5) cooperating with a notch (6) of a shank (2) to block the shank in a sliding manner. The box is restrained in translation towards a reception sleeve (3) by an elastic return unit (9) i.e. spring, to enable cooperation between the edge and the notch when the edge and the notch are against each other. A reinforcement piece (11) i.e. profile, is arranged for uncovering a part (12) of a vertical zone (7) of the edge such that the shank mounted in the device is in support against the part. The piece is realized in same material of the unit.

Description

L'invention concerne un dispositif de blocage en coulissement d'une tige crantée d'association d'un appui-tête à un dossier de siège de véhicule automobile et un siège comprenant un tel dispositif. The invention relates to a slidably locking device for a toothed stem for associating a headrest with a motor vehicle seat back and a seat comprising such a device.

Il est connu de réaliser un dispositif de blocage en coulissement d'une tige métallique crantée d'association d'un appui-tête à un dossier de siège de véhicule automobile, ledit dispositif comprenant un manchon de réception de ladite tige en coulissement et, solidaire dudit manchon, un tiroir monté en translation radiale, 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, ceci en vue d'un réglage en hauteur de l'appui-tête ou d'un blocage de sécurité, pour éviter notamment une projection et/ou un affaissement de l'appui-tête en cas de choc. Le bord comprend une zone latérale, sensiblement verticale, et au moins une zone sensiblement horizontale de réception des efforts de blocage de ladite tige, ledit tiroir étant contraint en translation vers ledit manchon par un moyen de rappel élastique, par exemple sous forme de ressort, de sorte à permettre la coopération entre ledit bord et ledit cran lorsqu'ils sont en vis à vis, ledit bord étant recouvert, au moins sur ladite zone horizontale, d'une pièce de renfort associée audit tiroir, ladite pièce étant agencée pour laisser découverte au moins une partie de ladite zone latérale, de sorte que ladite tige une fois montée dans ledit dispositif soit en appui contre ladite partie découverte. It is known to provide a sliding locking device of a toothed metal rod association of a headrest to a motor vehicle seat back, said device comprising a sleeve for receiving said sliding rod and, solidarity said sleeve, a slide mounted in radial translation, said slide comprising a locking edge intended to cooperate with at least one notch of said rod so as to lock it in sliding, this for a height adjustment of the support- head or a safety lock, to avoid including a projection and / or collapse of the headrest in case of shock. The edge comprises a lateral zone, substantially vertical, and at least one substantially horizontal zone for receiving the locking forces of said rod, said slide being constrained in translation towards said sleeve by an elastic return means, for example in the form of a spring, so as to allow the cooperation between said edge and said notch when facing each other, said edge being covered, at least on said horizontal zone, with a reinforcement piece associated with said drawer, said part being arranged to reveal at least a portion of said lateral zone, so that said rod once mounted in said device bears against said uncovered portion.

Avec un tel agencement, la tige n'est pas en contact avec la pièce de renfort, généralement métallique, mais avec le tiroir. Ce dernier étant généralement à base de matière plastique, on crée un contact plastique/métal entre le tiroir et la tige, ce qui évite la rayure de la tige par la pièce de renfort lors de son coulissement. With such an arrangement, the rod is not in contact with the reinforcement piece, generally metallic, but with the drawer. Since the latter is generally based on a plastic material, a plastic / metal contact is created between the drawer and the rod, which prevents the rod from being scratched by the reinforcing piece during its sliding.

Cependant, la mise en place d'un moyen de rappel élastique entraîne une complexification de réalisation et des surcoûts associés. However, the introduction of a resilient biasing means leads to a complexification of implementation and associated additional costs.

L'invention a pour but de pallier cet inconvénient. The invention aims to overcome this disadvantage.

A cet effet, et selon un premier aspect, l'invention propose un dispositif de blocage en coulissement d'une tige métallique crantée d'association d'un appui-tête à un dossier de siège de véhicule automobile, ledit dispositif comprenant un manchon de réception de ladite tige en coulissement et, solidaire dudit manchon, un tiroir monté mobile en translation radiale, 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 bord comprenant une zone latérale, sensiblement verticale, et au moins une zone sensiblement horizontale de réception des efforts de blocage de ladite tige, ledit tiroir étant contraint en translation vers ledit manchon par un moyen de rappel élastique de sorte à permettre la coopération entre ledit bord et ledit cran lorsqu'ils sont en vis à vis, ledit bord étant recouvert, au moins sur ladite zone horizontale, d'une pièce de renfort associée audit tiroir, ladite pièce étant agencée pour laisser découverte 15 au moins une partie de ladite zone latérale, de sorte que ladite tige une fois montée dans ledit dispositif soit en appui contre ladite partie découverte, le moyen de rappel étant issu de matière de la pièce de renfort. For this purpose, and according to a first aspect, the invention provides a sliding locking device of a toothed metal rod of association of a headrest to a motor vehicle seat back, said device comprising a sleeve of receiving said sliding rod and, integral with said sleeve, a slide mounted movably in radial translation, said slide comprising a locking edge intended to cooperate with at least one notch of said rod so as to lock it in sliding, said edge comprising a lateral zone, substantially vertical, and at least one substantially horizontal zone for receiving the locking forces of said rod, said slide being constrained in translation towards said sleeve by an elastic return means so as to allow cooperation between said edge and said notch; when facing each other, said edge being covered, at least on said horizontal zone, with a reinforcement piece associated with said drawer, said ladit the piece being arranged to reveal at least a portion of said lateral zone, so that said rod once mounted in said device is in abutment against said uncovered portion, the biasing means being derived from material of the reinforcing piece.

Dans cette description, les termes de positionnement dans l'espace (horizontal, 20 vertical,...) sont pris en référence au dispositif disposé dans le véhicule. In this description, the positioning terms in the space (horizontal, vertical, ...) are taken in reference to the device disposed in the vehicle.

Avec un tel agencement, on évite un moyen de rappel rapporté et la complexité de montage et les surcoûts qui en résultent. With such an arrangement, it avoids a reported return means and mounting complexity and the additional costs that result.

25 Selon un deuxième aspect, l'invention propose un siège comprenant un tel dispositif. According to a second aspect, the invention proposes a seat comprising such a device.

D'autres particularités et avantages de l'invention apparaîtront dans la description qui suit, faite en référence aux figures jointes dans lesquelles : 30 • la figure 1 est une vue en coupe partielle d'un dispositif selon un mode de réalisation, une tige crantée étant disposée dedans en coulissement, le bord de blocage coopérant avec un cran de la tige, • la figure 2 est une vue en perspective partielle du dispositif de la figure 1. Other features and advantages of the invention will become apparent from the description which follows, with reference to the appended figures in which: FIG. 1 is a partial sectional view of a device according to one embodiment, a notched pin; being slidably disposed therein, the locking edge cooperating with a notch of the shank; • Figure 2 is a partial perspective view of the device of Figure 1.

En référence aux figures, on décrit à présent un dispositif 1 de blocage en coulissement d'une tige 2 métallique crantée d'association d'un appui-tête à un dossier de siège de véhicule automobile, non représentés, ledit dispositif comprenant un manchon 3 de réception de ladite tige en coulissement et, solidaire dudit manchon, un tiroir 4 monté mobile en translation radiale, ledit tiroir comprenant un bord 5 de blocage destiné à coopérer avec au moins un cran 6 de ladite tige de sorte à la bloquer en coulissement, ledit bord comprenant une zone latérale 7, sensiblement verticale, et au moins une zone sensiblement horizontale 8 de réception des efforts de blocage de ladite tige, ledit tiroir étant contraint en translation vers ledit manchon par un moyen de rappel 9 élastique, notamment sous forme de ressort, de sorte à permettre la coopération entre ledit bord et ledit cran lorsqu'ils sont en vis à vis, ledit bord étant recouvert, au moins sur ladite zone horizontale, d'une pièce de renfort 11 associée audit tiroir, ladite pièce étant agencée pour laisser découverte au moins une partie 12 de ladite zone latérale, de sorte que ladite tige une fois montée dans ledit dispositif soit en appui contre ladite partie découverte, le moyen de rappel 9 étant issu de matière de la pièce de renfort 11. Referring to the figures, there is now described a device 1 for locking a sliding rod 2 metal notched combination of a headrest to a motor vehicle seatback, not shown, said device comprising a sleeve 3 receiving said sliding rod and, integral with said sleeve, a slide 4 mounted to be movable in radial translation, said slide comprising a locking edge 5 intended to cooperate with at least one notch 6 of said rod so as to lock it in sliding, said edge comprising a lateral zone 7, substantially vertical, and at least one substantially horizontal zone 8 for receiving the locking forces of said rod, said slide being constrained in translation towards said sleeve by an elastic return means 9, in particular in the form of spring, so as to allow the cooperation between said edge and said notch when they are opposite, said edge being covered, at least on said horizon zone ontale, a reinforcing member 11 associated with said drawer, said part being arranged to reveal at least a portion 12 of said lateral zone, so that said rod once mounted in said device bears against said exposed part, the return means 9 being derived from material of the reinforcement piece 11.

On combine ainsi deux fonctions sur un même composant, avec les avantages qui en résultent en termes de simplification de montage et de baisse des coûts de fabrication. It combines two functions on the same component, with the resulting advantages in terms of simplification of assembly and lower manufacturing costs.

Selon la réalisation représentée, la pièce de renfort 11 est sous forme d'un profilé en U, ledit profilé étant disposé en regard de deux zones horizontales 8 situées de part et d'autre de la zone latérale 7, la partie centrale du U étant située à l'opposé 13 du bord de blocage de sorte à libérer ladite zone latérale pour qu'elle forme partie découverte 12. According to the embodiment shown, the reinforcing piece 11 is in the form of a U-shaped profile, said profile being disposed opposite two horizontal zones 8 located on either side of the lateral zone 7, the central part of the U being located on the opposite side 13 of the locking edge so as to release said lateral zone so that it forms an uncovered portion 12.

Le moyen de rappel 9 est sous forme d'une patte élastique saillant de manière inclinée par rapport à la pièce de renfort 11 qui est réalisée notamment à base d'acier à ressort, ladite patte étant montée en contrainte de compression dans le dispositif 1, de sorte à contraindre le tiroir 4 en translation vers le manchon 3 et permettre la coopération entre le bord 5 et le cran 6 lorsqu'ils sont en vis à vis. The biasing means 9 is in the form of an elastic lug projecting in an inclined manner with respect to the reinforcement piece 11 which is made in particular from spring steel, said lug being mounted in compressive stress in the device 1, so as to constrain the slide 4 in translation to the sleeve 3 and allow the cooperation between the edge 5 and the notch 6 when facing.

La pièce de renfort 11 peut être associée au tiroir 4 par emboîtement ou par surmoulage, ce qui présente une grande simplicité d'assemblage. The reinforcing piece 11 can be associated with the drawer 4 by interlocking or overmolding, which has a great simplicity of assembly.

Un siège de véhicule automobile comprenant un tel dispositif 1 peut comprendre un appui-tête ù respectivement un dossier ù pourvu d'au moins une tige 2 crantée, et un dossier ù respectivement un appui-tête associé audit ~o dispositif. A motor vehicle seat comprising such a device 1 may comprise a headrest respectively a backrest provided with at least one notched rod 2, and a backrest respectively with a headrest associated with said device.

Claims (4)

REVENDICATIONS 1. Dispositif (1) de blocage en coulissement d'une tige (2) métallique crantée d'association d'un appui-tête à un dossier de siège de véhicule automobile, ledit dispositif comprenant un manchon (3) de réception de ladite tige en coulissement et, solidaire dudit manchon, un tiroir (4) monté mobile en translation radiale, ledit tiroir comprenant un bord (5) de blocage destiné à coopérer avec au moins un cran (6) de ladite tige de sorte à la bloquer en coulissement, ledit bord comprenant une zone latérale (7), sensiblement verticale, et au moins une zone sensiblement horizontale (8) de réception des efforts de blocage de ladite tige, ledit tiroir étant contraint en translation vers ledit manchon par un moyen de rappel (9) élastique de sorte à permettre la coopération entre ledit bord et ledit cran lorsqu'ils sont en vis à vis, ledit bord étant recouvert, au moins sur ladite zone horizontale, d'une pièce de renfort (11) associée audit tiroir, ladite pièce étant agencée pour laisser découverte au moins une partie (12) de ladite zone latérale, de sorte que ladite tige une fois montée dans ledit dispositif soit en appui contre ladite partie découverte, ledit dispositif étant caractérisé en ce que le moyen de rappel (9) est issu de matière de la pièce de renfort (11). 1. Device (1) slidably locking a rod (2) metal notched association of a headrest to a motor vehicle seat back, said device comprising a sleeve (3) for receiving said rod in sliding and, secured to said sleeve, a slide (4) mounted to move in radial translation, said slide comprising a locking edge (5) intended to cooperate with at least one notch (6) of said rod so as to lock it in sliding , said edge comprising a lateral zone (7), substantially vertical, and at least one substantially horizontal zone (8) for receiving the locking forces of said rod, said slide being forced in translation towards said sleeve by a return means (9 ) elastic so as to allow cooperation between said edge and said notch when they are facing each other, said edge being covered, at least on said horizontal zone, with a reinforcement piece (11) associated with said drawer, said piece being agen to reveal at least a portion (12) of said lateral area, such that said rod once mounted in said device bears against said uncovered portion, said device being characterized in that the biasing means (9) is derived from material of the reinforcement piece (11). 2. Dispositif selon la revendication 1, la pièce de renfort (Il) étant sous forme d'un profilé en U, ledit profilé étant disposé en regard de deux zones horizontales (8) situées de part et d'autre de la zone latérale (7), la partie centrale du U étant située à l'opposé (13) du bord de blocage de sorte à libérer ladite zone latérale pour qu'elle forme partie découverte (12), le moyen de rappel (9) étant sous forme d'une patte élastique saillant de manière inclinée par rapport à la pièce de renfort (11). 2. Device according to claim 1, the reinforcing piece (II) being in the form of a U-shaped profile, said profile being arranged facing two horizontal zones (8) located on either side of the lateral zone ( 7), the central portion of the U being located opposite (13) of the locking edge so as to release said lateral zone so that it forms an uncovered portion (12), the return means (9) being in the form of an elastic tab projecting inclined with respect to the reinforcement piece (11). 3. Siège de véhicule automobile comprenant un appui-tête, pourvu d'au moins une tige (2) crantée, et un dossier associé à un dispositif selon l'une quelconque des revendications 1 ou 2. 3. Motor vehicle seat comprising a headrest, provided with at least one rod (2) toothed, and a backrest associated with a device according to any one of claims 1 or 2. 4. Siège de véhicule automobile comprenant un dossier, pourvu d'au moins une tige (2) crantée, et un appui-tête associé à un dispositif selon l'une quelconque des revendications 1 ou 2. 4. Motor vehicle seat comprising a backrest provided with at least one notched pin (2) and a headrest associated with a device according to any one of claims 1 or 2.
FR0800239A 2008-01-16 2008-01-16 SLIDING LOCKING DEVICE FOR A HEADREST ROD COMPRISING A REINFORCED DRAWER WITH A PART INCORPORATING A RECALL MEANS Expired - Fee Related FR2926266B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0800239A FR2926266B1 (en) 2008-01-16 2008-01-16 SLIDING LOCKING DEVICE FOR A HEADREST ROD COMPRISING A REINFORCED DRAWER WITH A PART INCORPORATING A RECALL MEANS
PCT/FR2009/000011 WO2009112665A2 (en) 2008-01-16 2009-01-07 Device for slide-blocking a headrest rod including a slider reinforced by a part including a return means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0800239A FR2926266B1 (en) 2008-01-16 2008-01-16 SLIDING LOCKING DEVICE FOR A HEADREST ROD COMPRISING A REINFORCED DRAWER WITH A PART INCORPORATING A RECALL MEANS

Publications (2)

Publication Number Publication Date
FR2926266A1 true FR2926266A1 (en) 2009-07-17
FR2926266B1 FR2926266B1 (en) 2010-11-12

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FR0800239A Expired - Fee Related FR2926266B1 (en) 2008-01-16 2008-01-16 SLIDING LOCKING DEVICE FOR A HEADREST ROD COMPRISING A REINFORCED DRAWER WITH A PART INCORPORATING A RECALL MEANS

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FR (1) FR2926266B1 (en)
WO (1) WO2009112665A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989329A1 (en) * 2012-04-11 2013-10-18 Cera Slidable locking rod mounting device for automobile seat headrest, has elastically deformable part molded integrally with spool and projecting toward interior zone, where deformable part is arranged to be in support against rod

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6355439B2 (en) * 2014-06-06 2018-07-11 株式会社パイオラックス Headrest support

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050077772A1 (en) * 2003-10-14 2005-04-14 Nihon Technica Co., Ltd. Headrest support structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2908357B1 (en) * 2006-11-15 2009-02-06 Cera LOCKING DEVICE FOR SLIDING A ROD OF A HEADREST COMPRISING A REINFORCED DRAWER

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050077772A1 (en) * 2003-10-14 2005-04-14 Nihon Technica Co., Ltd. Headrest support structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989329A1 (en) * 2012-04-11 2013-10-18 Cera Slidable locking rod mounting device for automobile seat headrest, has elastically deformable part molded integrally with spool and projecting toward interior zone, where deformable part is arranged to be in support against rod

Also Published As

Publication number Publication date
WO2009112665A3 (en) 2010-06-17
FR2926266B1 (en) 2010-11-12
WO2009112665A2 (en) 2009-09-17

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