WO2008006426A1 - Moyen d'actionnement pour l'appui-tête d'un siège de véhicule - Google Patents

Moyen d'actionnement pour l'appui-tête d'un siège de véhicule Download PDF

Info

Publication number
WO2008006426A1
WO2008006426A1 PCT/EP2007/005002 EP2007005002W WO2008006426A1 WO 2008006426 A1 WO2008006426 A1 WO 2008006426A1 EP 2007005002 W EP2007005002 W EP 2007005002W WO 2008006426 A1 WO2008006426 A1 WO 2008006426A1
Authority
WO
WIPO (PCT)
Prior art keywords
deflection
deflecting
headrest
vehicle seat
actuation
Prior art date
Application number
PCT/EP2007/005002
Other languages
German (de)
English (en)
Inventor
Ernst-Otto FRÖSE
Original Assignee
Johnson Controls 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 Johnson Controls Gmbh filed Critical Johnson Controls Gmbh
Publication of WO2008006426A1 publication Critical patent/WO2008006426A1/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
    • B60N2/24—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
    • B60N2/427—Seats or parts thereof displaced during a crash
    • B60N2/42772—Seats or parts thereof displaced during a crash characterised by the triggering system
    • B60N2/42781—Seats or parts thereof displaced during a crash characterised by the triggering system mechanical triggering
    • 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 an actuator for the headrest of a vehicle seat, which accidentally at least partially under the effect of inertia of the seat occupant from its position of use to the head of the seat occupant towards a safety position is displaced, wherein the Aktuianssstoff at least in sections on a flexible, accidentally between opposing diverters deformable transfer means is operatively connected to the headrest.
  • European Patent Application EP 1 609 666 A2 discloses an actuation device of the type mentioned at the beginning for a so-called crash-active headrest. It consists of a first deflection with two roller-like deflection and an opposite deflection with a roller-like deflection, between which the soul of a Bowden cable is guided in a straight line and which are connected to each other via two V-shaped articulated lever.
  • the single deflection is displaced under extension of the lever joint in the increasing distance between the two opposing deflection, wherein the soul of the Bowden cable is arcuately deformed and thereby pulled out of the shell of the Bowden cable. This movement is transmitted from the Bowden cable to a headrest supporting subframe which is pivotally mounted within the seat back structure.
  • the invention has for its object to provide a compact, low-friction and powerful Aktuianssstoff for a crash-active headrest.
  • each deflection device has an arrangement arranged to each other in invariable distance deflection, which are offset to the mutually arranged at an invariable distance deflection of the opposite deflection.
  • a zig-zag-shaped deformation of the transmission means is effected without the need for stretching between the deflecting means arranged joints must be stretched. Rather, the deflection devices are moved towards one another without changing the distance between the deflection means.
  • each deflection device is provided with at least two, preferably at least three deflection means in order to produce a sufficient path in the transmission means.
  • a deflection device has exactly one deflection means more than the opposite deflection device.
  • the transmission means is designed as a Bowden cable, which in the initial state in the region of the deflection preferably rectilinear soul between the deflection is deformable.
  • the deflection devices are advantageously arranged pivotably about one another about an axis of rotation which is aligned parallel to the transmission means running in the initial position between the deflection means. Despite a large number of deflection points (neglecting the friction in the deflection) in this arrangement, only the friction of a single joint to overcome.
  • other devices for guiding the first deflection relative to the second deflection conceivable, for example, a slotted guide.
  • the deflection devices are arranged in a structural unit, which can be installed in the preassembled state in the backrest of the vehicle seat and is operatively connected to the headrest.
  • the transmission means can be assigned in advance of this unit, the connection with the headrest takes place only in the course of installation in the backrest.
  • a division of the transmission means in a headrest side and a aktuator workedes segment is conceivable, which are connected to each other in the course of installation in the backrest.
  • a pre-assembly of the transmission means can be provided on the headrest, which only in the course of installation of the Actuator is passed in the backrest between the deflection.
  • the operative connection between actuator and headrest can be done immediately before or after its installation. Using suitable coupling means, even the creation of an active compound during the installation of the actuator is conceivable.
  • FIG. 1 shows a motor vehicle seat according to the invention with an accidentally displaceable headrest
  • Fig. 2 is an actuating means according to a first embodiment of
  • Fig. 3 shows another actuator according to the invention in one
  • FIG. 2 corresponding representation.
  • the motor vehicle seat 1 shown in Fig. 1 consists of a seat part 2 and a backrest 3 with a headrest 4.
  • the headrest 4 has a base 5 which is height adjustable by means of support rods 6 connected to the backrest 3.
  • a cushion part 7 is arranged, the accident conditionally by means of a drive device 8 in the direction of the head of the seat occupant forward (cushion part T) is displaced.
  • the drive device 8 is actuated by an actuation means 9 which is operatively connected to the drive device 8 by means of a Bowden cable 10 guided by at least one holding rod.
  • the actuation means 9 is arranged in the lower region (cymbal system) of the backrest 3 and is actuated by the body of the seat occupant pressed into the upholstery of the backrest 3 during a rear impact, absorbs the energy thus obtained and transmits it through the Bowden cable 10 into the drive device 8 Due to the forward displacement of the upholstery part T, the contact surface 11 of the
  • Headrest 4 moves closer to the head of the seat occupant (contact surface 11 ') and thereby prevents hyperextension of the neck vertebrae.
  • the actuation means 9 shown in FIG. 2 consists of a first deflection device 12, which is connected by means of a base plate 13 fixed to the side frame members 14, 14 'of the backrest 3. Before the first deflection 12, the soul 15 of the Bowden cable 10 between the frame beams 14, 14 'stretched. On the other side of the core 15, a second deflection device 16 is arranged, which in an accident by the pressure exerted by the seat occupant on the second deflection 16 pressure against the direction of travel to the first deflection device 12 to (arrow A) is displaced.
  • the second deflection device 16 is rotatably connected by means of a lever 17 via a hinge 18 with the frame beams 14, 14 'and can therefore be pivoted in the direction of the first deflection device 12. Due to the bias of the soul 15, the deflecting devices 12, 16 are kept at a distance and thus in the initial position.
  • Each block-like deflection device 12, 16 has on its soul side 15 facing surface side on a wave-like profile, wherein serving as deflection means 19, 20 for the soul 15 wave crests each deflection 12, 16 to each other have a predetermined distance D.
  • the deflecting means 20 of the first deflecting device 12 are offset from the deflecting means 19 of the second deflecting device 16 by a half distance (D / 2).
  • the wave crests (deflection means 19) of the second deflection device 16 dive into the associated wave troughs (between the deflection means 20) of the first deflection device 12 (and vice versa).
  • the core 15 of the Bowden cable 10 is thereby deformed zigzag or wavy and, because of the associated with the deformation extension of the path along the deflecting devices 12, 16, pulled out of the shell 21 of the Bowden cable 10. This movement is transmitted to the headrest 4 and transferred to its safety position.
  • the actuation device 9 with the deflecting devices 12, 16 is arranged as a preassembled structural unit in a cassette 22, wherein the first deflecting device 12 is connected to the cassette 22 in a non-displaceable manner and the second deflecting device 16 by means of a link guide located in the cassette 22 23 linearly to the first deflecting device 12 is displaceable.
  • Each deflection device 12, 16 consists of an arrangement of deflection means 19, 20 in the form of rollers 24, the alignment of which corresponds to the above-described wave crests and valleys.
  • the deflection means 12, 16 are held in this embodiment by compression springs 25 at a distance and thus in their initial position. Also, the soul 15 of the Bowden cable 10 is held biased in the cassette 22. The thus prepared structural unit is later pushed between the frame members 14, 14 'of the backrest 3 and fixed there by screws, rivets, welding or the like.

Landscapes

  • 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

L'invention concerne un moyen d'actionnement (9) pour l'appui-tête (4) d'un siège de véhicule (1), qui peut être déplacé en cas d'accident au moins en partie, sous l'effet de la force d'inertie de l'occupant du siège, de sa position d'utilisation vers la tête de l'occupant du siège dans une position de sécurité. Le moyen d'actionnement est connecté fonctionnellement à l'appui-tête au moins sur une partie par le biais d'un moyen de transmission flexible déformable en cas d'accident entre des dispositifs de déflection opposés (12, 16). Conformément à l'invention, chaque dispositif de déflection (12, 16) présente un agencement de moyens de déflection (20, 19) disposés à distance fixe l'un par rapport à l'autre, qui sont décalés par rapport aux moyens de déflection (19, 20), à distance fixe l'un par rapport à l'autre, des dispositifs de déflection opposés (16, 12).
PCT/EP2007/005002 2006-07-13 2007-06-06 Moyen d'actionnement pour l'appui-tête d'un siège de véhicule WO2008006426A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006032639.3 2006-07-13
DE102006032639A DE102006032639B3 (de) 2006-07-13 2006-07-13 Aktuierungsmittel für die Kopfstütze eines Fahrzeugsitzes

Publications (1)

Publication Number Publication Date
WO2008006426A1 true WO2008006426A1 (fr) 2008-01-17

Family

ID=38436761

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/005002 WO2008006426A1 (fr) 2006-07-13 2007-06-06 Moyen d'actionnement pour l'appui-tête d'un siège de véhicule

Country Status (2)

Country Link
DE (1) DE102006032639B3 (fr)
WO (1) WO2008006426A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2106962B1 (fr) 2008-04-01 2012-02-22 L & P Swiss Holding Company Mécanisme de déclenchement pour système d'appuie-tête actif et siège de véhicule
DE102013010705B4 (de) * 2013-03-26 2017-09-14 Adient Luxembourg Holding S.à.r.l. Kopfstütze, die in x-richtung in eine sicherheitsstellung und eine komfortstellung überführbar ist
DE102019206828A1 (de) * 2019-05-10 2020-11-12 Volkswagen Aktiengesellschaft Kopfstütze und Fahrzeugsitz

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1625970A1 (fr) * 2004-06-22 2006-02-15 Toyota Jidosha Kabushiki Kaisha Siège de véhicule.
WO2006019189A1 (fr) * 2004-08-19 2006-02-23 Nhk Spring Co., Ltd. Siège de véhicule

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004016474B3 (de) * 2004-03-31 2005-08-11 Johnson Controls Gmbh Kopfstütze, insbesondere für ein Kraftfahrzeug
JP4102779B2 (ja) * 2004-06-22 2008-06-18 トヨタ自動車株式会社 車両用シート
DE102004048910B4 (de) * 2004-10-06 2009-09-17 Johnson Controls Gmbh Aktuierungsmittel für eine crash-aktive Kopfstütze

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1625970A1 (fr) * 2004-06-22 2006-02-15 Toyota Jidosha Kabushiki Kaisha Siège de véhicule.
WO2006019189A1 (fr) * 2004-08-19 2006-02-23 Nhk Spring Co., Ltd. Siège de véhicule

Also Published As

Publication number Publication date
DE102006032639B3 (de) 2007-10-11

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