WO2009000221A1 - Siège de véhicule avec un appui-tête actif - Google Patents

Siège de véhicule avec un appui-tête actif Download PDF

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Publication number
WO2009000221A1
WO2009000221A1 PCT/DE2008/000312 DE2008000312W WO2009000221A1 WO 2009000221 A1 WO2009000221 A1 WO 2009000221A1 DE 2008000312 W DE2008000312 W DE 2008000312W WO 2009000221 A1 WO2009000221 A1 WO 2009000221A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle seat
headrest
seat according
linkage
rod
Prior art date
Application number
PCT/DE2008/000312
Other languages
German (de)
English (en)
Inventor
Sven Bartels
Original Assignee
Faurecia Autositze Gmbh
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 Faurecia Autositze Gmbh filed Critical Faurecia Autositze Gmbh
Publication of WO2009000221A1 publication Critical patent/WO2009000221A1/fr

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
    • B60N2/888—Head-rests with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest

Definitions

  • the invention relates to a vehicle seat with active headrest according to the preamble of claim 1.
  • EP 0 826 553 A2 discloses a vehicle seat with a headrest that can be adjusted on the backrest, which, in the event of a rear impact of the vehicle, can be moved from a normal starting position into a restraining position which approximates a head of the occupant.
  • the headrest is moved from the starting position to the restraint position by a vehicle-sensitively activatable adjusting device, which is connected to the headrest by a flexible pulling means and is arranged in the backrest or the vehicle.
  • the flexible traction device is provided by a Bowden cable formed, which forms a loop inside the backrest of the vehicle.
  • DE 10 2005 004 684 A1 discloses a headrest of a motor vehicle seat with a carrying structure which has at least one spar and with a supporting body which is normally in a use position and which leaves the use position in the event of an accident of the motor vehicle and one Accident position occupies, in which the support body is in the direction of travel before the use position.
  • the spar is connected to at least one crosspiece which extends substantially horizontally and is located above the upper edge of a backrest of the motor vehicle seat.
  • the support body has an obliquely extending guide region, which is adapted to the crosspiece and which is movable relative to the crosspiece. It is provided a spring which elastically biased the support body against the crosspiece and strives to move the support body in the accident position.
  • a releasable locking device is provided which is associated with the elastic means and which normally blocks the elastic means but releases in the event of an accident of the motor vehicle so that the elastic means can move the support body from the use position to the accident position.
  • a headrest of a motor vehicle seat is known with a support structure having at least one spar and is connected to a support body.
  • the support structure with the support body is movable over at least one guide region and the support body relative to the support structure from a normal position of use along a linear feed path in an accident position in which the support body is both in the direction of travel and in the direction perpendicular thereto in front of the use position.
  • a drive unit is provided which has a tension spring and a blocking device comprising a first blocking part and a release device.
  • the first blocking part points an elongated opening through which engages a driver of the support structure. In the use position, the blocking part supports the tensile force of the tension spring. After pressing the release device, the blocking part releases the tension spring.
  • DE 197 31 059 A1 discloses an active head restraint for a motor vehicle seat which can be moved by a drive device which can be triggered in the event of a frontal or rear impact into a support position which is further forward than the normal support position, the head restraint at least one supporting surface for the head of an occupant forming cushion part as well as a cushion part of the respective support position holding
  • the carrying device is rotatably mounted by means of an adjusting device arranged on the backrest near its upper edge about a pivot axis aligned horizontally and transversely to the direction of travel.
  • an adjusting device arranged on the backrest near its upper edge about a pivot axis aligned horizontally and transversely to the direction of travel.
  • the headrest or the upholstered part is designed to be height-adjustable as a carrying device, wherein the height adjustment takes place in the event of a frontal or rear impact by the drive device.
  • DE 10 2005 052 766 B3 and DE 199 61 617 C2 each disclose an actively split headrest in which a front headrest part can be moved from a position retracted into a rear headrest part into a linearly extended position in the event of a crash.
  • the two headrest parts are hinged together.
  • the object of the present invention is to provide a vehicle seat with active headrest of the type mentioned, in which the number of components required for crash-related activation of the headrest components is minimized, the headrest remains unchanged after release in shape and in the event of a crash an effective and fast Actuation of the headrest is achieved.
  • FIG. 1 is a side view of a vehicle seat with headrest in a schematic representation
  • FIG. 2 shows schematically a side of a first embodiment of a headrest according to the invention in the basic position
  • 3 shows schematically the headrest according to FIG. 2 after release in a first movement phase
  • FIG. 4 shows schematically the headrest according to FIG. 2 after being triggered in a middle movement phase
  • FIG. 5 shows schematically the headrest according to FIG. 2 after release in a final movement phase
  • Fig. 6 shows schematically the headrest of FIG. 2 in a basic position and a triggered functional position - shown in a figure - and
  • Fig. 7 shows schematically a side of a second embodiment of an inventive headrest in the normal position and the triggered functional position.
  • FIG. 1 shows a vehicle seat 2 with a seat part 3, a backrest 4 and an adjustable on the backrest 4 arranged active headrest 6 near a head and neck area 5 of a vehicle occupant 7.
  • the headrest 6 can be from a normal working Position (shown in solid) are moved in a crash in a forward and upward position displaced (dash-dotted lines in Fig. 1 shown).
  • the headrest 6 comprises a pair of rods 8 (only one rod is shown in the drawing) and a headrest linkage 12 having the crossbar 10 connecting the rod (s) and a rigid, hollow molding. body 14 as a support structure and for receiving a one-piece formed cushion body 16 and a cover 18 of the cushion body 16 (see Fig. 2-7).
  • the headrest linkage 12 can be introduced from below into the padding body 16, which is at least partially translationally movable relative to the headrest linkage, with a horizontal and a vertical movement component.
  • the molded body 14 is eccentrically and rotatably connected to the transverse part 10 of the headrest linkage 12 at a first location 17 located in the upper region of the headrest 6.
  • first location 17 located in the upper region of the headrest 6.
  • Headrest linkage 12 a rotatably and eccentrically mounted with the mold body 14 in operative connection rotary body 19.
  • connection of the molded body 14 with the transverse part 10 of the Kopfstütz zengestlindes 12 and the rods 8 of the headrest linkage 12 is carried out such that by rotation of the molded body 14 on the cross member 10 of the headrest linkage 12 of the molded body 14 and thus the entire cushion body 16 relative to the rods 8 of the headrest linkage 12 is displaced forward and upward. This will be explained in more detail below.
  • the molded body 14 is provided with a guide means 20 operatively connected to a part 22 of at least one rod 8 of the headrest linkage 12, with which the molded body 14 and thus the cushion body 16 move relative to the rods 8 of the headrest linkage 12 is displaceable forward and upward.
  • the guide means 20 comprises a longitudinally extending in the direction of travel and forward slot 24 into which the part 22 of the headrest rod 12 stiffened.
  • the part 22 is preferably formed by a bolt or pin arranged on at least one rod 8 of the headrest linkage 12.
  • the rotary body 19 is partially enclosed by a part 23 of the molded body 14.
  • the rotational body 19 is displaced by an in the event of a crash can be released or released drive means 28 in an eccentric rotational movement about the cross member 10 of the headrest linkage 12.
  • the drive device 28 is connected via traction means 34 with the rotary body 19 in operative connection.
  • the rotary body 19 has a rotatably mounted on the transverse part 10 of the headrest linkage 12, with the rotary body 19 rotationally fixed rotational member 30 which is arranged eccentrically in the rotary body 19.
  • the traction element 34 On the rotation element 30, the traction element 34, which is at least partially deflected about the rotation element 30, engages at one point 31 with one end 33.
  • the other end 35 of the traction means 34 is connected to a drive means 28 causing a change in length or elongation of the traction means 34.
  • the drive device 28 is formed by an energy store which can be triggered or released in the event of a crash, for example spring storage 32 (cf., FIGS. 2-7) or by pyrotechnic crash-sensitive means.
  • the change in length or elongation of the traction means 34 can also be effected by occupant-induced deformation of structural parts of the vehicle seat.
  • the Drive device 28 can be designed to be releasable or triggerable in the vehicle and / or vehicle.
  • the spring store (s) 32 may be disposed in the hollowed rod (s) 8 of the headrest linkage 12, in the back frame or backrest structure 4, or below the vehicle seat part 3.
  • the rotary body 19 is formed at one or both ends of a shaped body 42, preferably in the central region between the bodies of revolution 19 has a minimized, shown in Fig.2 dashed diameter D, whereby in the contact area of the head of the occupant optimal comfort by maximum cushion body strength and optimum lateral support is obtained.
  • the traction means 34 is a traction cable, preferably a Bowden cable.
  • Traction means 34 and the traction cable, or the Bowden cable is preferably guided in the hollow trained / n rod / n of the headrest linkage 12 up to the drive means 28 arranged therein and is actuated from there by the triggerable in a crash drive means 28 for rotation of the rotary body 19 for the purpose of shifting the cushion body 16 of the head rest 6 forward and upward.
  • the traction means 34 can also be guided through the hollow rod / rods 8 of the headrest 6 into the backrest structure 4 or up to below the vehicle seat part 3 and from there through the drive unit 28 which can be triggered in the event of a crash.
  • a modified embodiment of the headrest 6 according to the invention is shown, which differs from the embodiment according to Figures 2-6 in that at least one of the rods 8 of the headrest linkage 12 at the second lower joint 21 with a forward and top-facing bend 44 is provided at the Shaped body 14 is guided displaceably guided with its lower end 46 and along which the molded body 14 and thus the entire cushion body 16 in the direction of travel forward and upward is displaceable.
  • the traction means 34 and the drive means 28 are not shown.
  • the molded body 14 encloses the rotary body 19 in the upper part of the headrest 6 and is slidably connected in the lower part of the headrest with the / the headrest rod / n 8.
  • rotational body 19 is in connection with the lower displaceable by the arrangement "guide means or slot or gate 24 in the molding 14 / guide member or guide pin or pin 22 at the / the head support bar / n 8 or bender 44 / end 46 of the investor 14 "formed fixing point 21 of the molded body 14 of the moldings and thus the entire cushion body 16 relative to the / the headrest bar / n 8 forward and upward
  • the rotation of the rotary body 19 is thereby preferably generated by the unwinding of the traction cable or Bowden cable 34 which is deflected about the rotary element 30 and connected to the rotary element.
  • the drive device 28 is preferably normally blocked by a blocking device (50) whose blocking effect can be canceled by a crash-sensitive means, for example an acceleration sensor (52) which responds to a crash and sends a blocking release signal to the blocking device when a predefinable acceleration threshold value is exceeded is for release or release of the drive device, cf. 1, in which the blocking device and the acceleration sensor are schematically shown.
  • a blocking device 50
  • an acceleration sensor which responds to a crash and sends a blocking release signal to the blocking device when a predefinable acceleration threshold value is exceeded is for release or release of the drive device, cf. 1, in which the blocking device and the acceleration sensor are schematically shown.
  • the headrest 6, or the cushion body 16 remains unchanged even after being triggered in its / its outer shape. All moving parts are completely enclosed by the molded body 14.
  • the / mainly formed at the ends of the shaped body 42 / n rotary body 19 allows in the contact area of the head 5 of the vehicle occupant 7 optimal comfort
  • the inventive active headrest 6 requires only a few mechanical components, so that the weight can be kept low with the advantage that only very small repercussions can occur on mass accelerations.
  • the transmission of the rotational movement over the rotary body 19 can be done on both sides of the headrest 6 but also on one side of the headrest.
  • the direction of movement and expansion of the cushion body 16 of the headrest 6 in the event of a crash is essentially the formation and the interaction of slot 24 of the molding 14 and pin or pin 22 of the headrest rod / n 8 (Fig 2-6), or angling 44 and the abutting end 46 of the shaped body 14 (FIG. 7).

Landscapes

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

Abstract

L'invention concerne un siège de véhicule (2) pourvu d'un appui-tête (6) actif disposé sur un dossier (4) de manière à pouvoir être ajusté et comportant une tringlerie d'appui-tête (12) présentant deux montants (8) et une partie transversale (10) reliant les montants (8), ainsi qu'un corps moulé (14) servant de structure de support pour recevoir un corps de rembourrage (16) et un revêtement de l'appui-tête (6). Le corps moulé (14) est relié en un premier endroit (17) situé dans la partie supérieure de l'appui-tête (6), de manière déplaçable de façon excentrique, à la partie transversale (10) de la tringlerie d'appui-tête (12) et en un deuxième endroit (21) espacé du premier endroit (17) et situé dans la partie inférieure de l'appui-tête (6), de manière déplaçable par rapport aux montants (8) de la tringlerie d'appui-tête (12), auxdits montants (8). Grâce à cette liaison, par rotation d'un corps rotatif sur la partie transversale (10), le corps moulé (14), et par conséquent l'ensemble du corps de rembourrage (16) de l'appui-tête (6), peuvent se déplacer vers l'avant et vers le haut par rapport aux montants (8) de la tringlerie d'appui-tête (12).
PCT/DE2008/000312 2007-06-27 2008-02-21 Siège de véhicule avec un appui-tête actif WO2009000221A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007029789.2 2007-06-27
DE102007029789A DE102007029789B3 (de) 2007-06-27 2007-06-27 Fahrzeugsitz mit aktiver Kopfstütze

Publications (1)

Publication Number Publication Date
WO2009000221A1 true WO2009000221A1 (fr) 2008-12-31

Family

ID=39468803

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000312 WO2009000221A1 (fr) 2007-06-27 2008-02-21 Siège de véhicule avec un appui-tête actif

Country Status (2)

Country Link
DE (1) DE102007029789B3 (fr)
WO (1) WO2009000221A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0826553A2 (fr) 1996-08-28 1998-03-04 TRW Occupant Restraint Systems GmbH Siège de véhicule à appui-tête, monté réglable sur le dossier
DE19731059A1 (de) 1997-07-19 1999-01-21 Opel Adam Ag Aktive Kopfstütze, insbesondere für einen Kraftfahrzeugsitz
JP2000342379A (ja) * 1999-06-01 2000-12-12 Delta Kogyo Co Ltd ヘッドレストの頭部衝撃吸収装置
DE19946404A1 (de) * 1999-09-28 2001-04-05 Siemens Restraint System Gmbh System zur schlagartigen Reduzierung des Abstandes zwischen Kopfstütze und Kopf eines Fahrzeuginsassen
DE19961617A1 (de) 1999-12-21 2001-07-12 Daimler Chrysler Ag Rückenlehne für einen Fahrzeugsitz
DE102005004684A1 (de) 2004-03-09 2005-09-29 C. Rob. Hammerstein Gmbh & Co. Kg Kopfstütze eines Fahrzeugsitzes mit einem Stützkörper
DE102004059237B3 (de) * 2004-12-08 2006-02-23 Grammer Ag Kopfstütze für Fahrzeugsitze
FR2880308A1 (fr) * 2005-01-04 2006-07-07 Hammerstein Gmbh C Rob Appui-tete d'un siege de vehicule automobile
DE102005050971A1 (de) 2005-03-23 2006-09-28 C. Rob. Hammerstein Gmbh & Co. Kg Kopfstütze mit Tragstruktur und Stützkörper
DE102005059693A1 (de) * 2005-04-27 2006-11-02 C. Rob. Hammerstein Gmbh & Co. Kg Kopfstütze eines Kfz-Sitzes mit einer Tragstruktur
DE102005052766B3 (de) 2005-11-04 2007-03-08 Lear Corp., Southfield Linear verstellbare, aktive Kopfstütze

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19548339C2 (de) * 1995-12-22 1998-05-28 Daimler Benz Ag Kopfstütze für einen Fahrzeugsitz

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0826553A2 (fr) 1996-08-28 1998-03-04 TRW Occupant Restraint Systems GmbH Siège de véhicule à appui-tête, monté réglable sur le dossier
DE19731059A1 (de) 1997-07-19 1999-01-21 Opel Adam Ag Aktive Kopfstütze, insbesondere für einen Kraftfahrzeugsitz
JP2000342379A (ja) * 1999-06-01 2000-12-12 Delta Kogyo Co Ltd ヘッドレストの頭部衝撃吸収装置
DE19946404A1 (de) * 1999-09-28 2001-04-05 Siemens Restraint System Gmbh System zur schlagartigen Reduzierung des Abstandes zwischen Kopfstütze und Kopf eines Fahrzeuginsassen
DE19961617A1 (de) 1999-12-21 2001-07-12 Daimler Chrysler Ag Rückenlehne für einen Fahrzeugsitz
DE102005004684A1 (de) 2004-03-09 2005-09-29 C. Rob. Hammerstein Gmbh & Co. Kg Kopfstütze eines Fahrzeugsitzes mit einem Stützkörper
DE102004059237B3 (de) * 2004-12-08 2006-02-23 Grammer Ag Kopfstütze für Fahrzeugsitze
FR2880308A1 (fr) * 2005-01-04 2006-07-07 Hammerstein Gmbh C Rob Appui-tete d'un siege de vehicule automobile
DE102005050971A1 (de) 2005-03-23 2006-09-28 C. Rob. Hammerstein Gmbh & Co. Kg Kopfstütze mit Tragstruktur und Stützkörper
DE102005059693A1 (de) * 2005-04-27 2006-11-02 C. Rob. Hammerstein Gmbh & Co. Kg Kopfstütze eines Kfz-Sitzes mit einer Tragstruktur
DE102005052766B3 (de) 2005-11-04 2007-03-08 Lear Corp., Southfield Linear verstellbare, aktive Kopfstütze

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