WO2004039626A1 - Appui-tete actif pour siege de vehicule - Google Patents

Appui-tete actif pour siege de vehicule Download PDF

Info

Publication number
WO2004039626A1
WO2004039626A1 PCT/EP2003/011934 EP0311934W WO2004039626A1 WO 2004039626 A1 WO2004039626 A1 WO 2004039626A1 EP 0311934 W EP0311934 W EP 0311934W WO 2004039626 A1 WO2004039626 A1 WO 2004039626A1
Authority
WO
WIPO (PCT)
Prior art keywords
control device
headrest
linkage
support structure
actuator
Prior art date
Application number
PCT/EP2003/011934
Other languages
English (en)
Inventor
Dante Libanore
Original Assignee
Compas S.R.L.
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 Compas S.R.L. filed Critical Compas S.R.L.
Priority to AU2003283309A priority Critical patent/AU2003283309A1/en
Priority to EP03775241A priority patent/EP1578638A1/fr
Publication of WO2004039626A1 publication Critical patent/WO2004039626A1/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
    • B60N2/806—Head-rests movable or adjustable
    • 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 present invention relates to an active headrest for a vehicle seat, and more particularly to a control device for a headrest of this type.
  • the headrest comprises a frame structure adapted to be mounted on top of the backrest of the vehicle seat, a body supported by the frame structure and having a front surface for supporting the head of the occupant of the seat, and a control device arranged to move the headrest body, in the event of a collision of the vehicle, from a rest position to an active position which is advanced and/or raised towards the head of the occupant of the seat .
  • This control device includes a linkage operable by a pyrotechnic actuator and is entirely received inside the headrest body, whereby the headrest forms an absolutely separate component from the seat . Accordingly, the headrest can be manufactured independently of the seat and then mounted thereon.
  • the linkage of the control device comprises a pair of swivelling levers, articulated at a first end thereof to the frame structure of the headrest and at the opposite end to respective support members attached to an inner side of the shell of the headrest body, in such a manner as to form a quadrilateral linkage mechanism.
  • the frame structure which supports to rotation both the swivelling levers and the pyrotechnic actuator of the control device is formed by a set of metal tubular elements suitably bent and connected to each other.
  • Figure 1 is a perspective view of a control device for an active headrest of a vehicle seat according to a first embodiment of the invention
  • Figure 2 is a side elevation view of the control device of Figure 1;
  • FIG. 3 is another perspective view of the control device of Figure 1;
  • FIG 4 is a further perspective view of the control device of Figure 1, in which the plate for attachment of the inner shell of the headrest body has been removed;
  • Figure 5 is a back elevation view of the active headrest of Figure 1, in which there is shown in particular the arrangement for fastening the inner shell of the headrest body to the attachment plate of the control device;
  • Figure 6 is a perspective view of a control device according to a further embodiment of the present invention.
  • an active headrest 10 for a vehicle seat basically includes :
  • a body 11 adapted to be moved, in the event of a collision, from a rest position, in which it provides a surface for supporting the head of the occupant of the seat, to an active position which is advanced and/or raised with respect to the rest positio ;
  • control device for moving the body 11 from the rest position to the active position
  • the body 11 of the headrest is a hollow member having a generally bell-like shape which is open downwards.
  • the body basically consists of an inner shell 12 covered by a padding of a soft material .
  • the shell 12 comprises a front wall 12a intended to provide a surface for supporting the head of the occupant of the seat, a rear wall 12b intended to be connected with the control device of the headrest, and a bent upper portion 12c which connects the two front and rear walls, closing the shell 12 from above.
  • the control device 13 of the headrest comprises:
  • an actuator 17 ( Figure 4) , preferably a pyrotechnic actuator, for setting to rotation the quadrilateral linkage in order to move the body 11 to the active position in a very short time (advantageously less than 20 ms, whereby the operation of the headrest anticipates the inertial effects produced by the collision of the head of the occupant of the seat) ;
  • a support member 18 which is mounted on the pair of mounting bars 14 and to which the front ends of the swivelling levers 15, 16 and the lower end of the pyrotechnic actuator 17 are articulated;
  • an attachment plate 19 which is articulated to the rear ends of the swivelling levers 15, 16 and to which the rear wall 12b of the inner shell 12 of the headrest body is fastened.
  • the two lower swivelling levers 15 of the quadrilateral linkage are articulated at their front ends to the support member 18 by means of respective articulation pins 20 (Figure 1 and 2) which define a fixed axis of rotation orientated in a transverse horizontal direction, and at their rear ends to the attachment plate 19 by means of respective articulation pins 21 which engage respective lower projections 22 of the plate 19 ( Figure 4) .
  • the upper swivelling lever 16 of the quadrilateral linkage is articulated at its front end to the support member 18 by means of an articulation pin 23 which defines a fixed axis of rotation parallel to that of the articulation pins 20, and at its rear end to the attachment plate 19 by means of an articulation pin 24 which engages an upper projection 25' of the plate 19 ( Figures 1 and 4) .
  • the upper lever 16 also forms an intermediate portion 16a which projects downwards and engages a pin 26 ( Figure 3 and 4) for articulation of the upper end of the actuator 17.
  • the swivelling levers 15, 16 are manufactured by plastics moulding so as to reduce the overall weight of the headrest and the inertia of the control device, thereby enabling to speed up the response of the headrest upon actuation.
  • the pyrotechnic actuator 17 is of per-se-known type and therefore will not be illustrated in detail in the present description. It suffices to note, referring to Figure 4, that the cylinder of the actuator is secured at its bottom onto a base portion 27 supported to rotation by the support member 18 by means of a pair of articulation pins 28 which define an axis of rotation parallel to those of the swivelling levers 15, 16. At its top, the actuator 17 is articulated with its rod (not visible in the figures) to the downward-projecting portion 16a of the upper swivelling lever 16, as already explained above.
  • the burst of the pyrotechnic charge contained in the actuator 17 is primed by a control signal provided by an electronic control unit (per se known and not illustrated) which receives the information coming from at least one crash sensor (also not illustrated) , such as for example a longitudinal accelerometer, and evaluates the direction and intensity of the collision in order to determine whether the headrest must be actuated or not.
  • an electronic control unit per se known and not illustrated
  • the information coming from at least one crash sensor also not illustrated
  • a longitudinal accelerometer such as for example a longitudinal accelerometer
  • the support member 18 serves to provide the points of articulation of the levers 15, 16 of the quadrilateral linkage and of the cylinder of the pyrotechnic actuator 17.
  • the support member 18 is advantageously formed as a single shaped body, which is manufactured by plastics moulding. This shaped body forms a central portion 18a on which the above-listed components are articulated, and a pair of side portions 18b provided with seats for installation of the body 18 at the top of the mounting bars 14.
  • the attachment plate 19 is advantageously manufactured by plastics moulding.
  • the plate 19 comprises ( Figure 3 and 5) a central portion 19a forming on its front side the upper projection 25 to which the swivelling lever 16 is articulated, and a pair of side portions 19b preferably integral with the central portion 19a and forming on their front faces the lower projections 22 to which the swivelling levers 15 are articulated.
  • each side portion 19b of the plate forms on its rear side a seat 29 for releasably restraining a corresponding engagement member 30 formed by the rear wall 12b of the shell 12.
  • the seats 29 are formed as vertical guides into which the engagement member 30 of the shell 12 is inserted from above sliding downwards. Moreover, the seats 29 are each provided with a plurality of pairs of elastic latching devices 31 (also, preferably integral with the plate 19) adapted to lock the respective engagement member 30 against the bottom of the guides 29.
  • each engagement member 30 is formed integrally with the shell 12 as a vertical channel-like element which projects from the rear wall 12b of the shell towards the centre of the headrest body.
  • Each engagement member forms also a pair of vertical openings 32 adjacent to its side edges, into which openings the latching devices 31 associated to the guides 29 can be inserted.
  • an attachment plate interposed between the swivelling levers and the shell of the headrest offers the advantage of enabling the same control device to be used together with different bodies of different and the headrest body to be disassembled (by means of an appropriate tool, not illustrated) from the device, even after the headrest has been installed of the vehicle seat, in order to allow the inspection of the mechanism and the replacement of the pyrotechnic charge after the operation of the system.
  • control device can be installed also inside headrest bodies of small size, such as those normally used in motor vehicles of medium and low category.
  • the device fully meets the current actual requirements of the automotive industry for a reduction in the weight of the components installed on board of the vehicles.
  • FIG. 6 A second embodiment of an active headrest according to the present invention is illustrated in Figure 6, where parts and elements identical or similar to those of the previous figures have been given the same reference numerals.
  • This variant of construction differs from the first embodiment purely in that the support member 18 is articulated, instead of securely fixed, to the mounting bars 14, by means of a pair of articulation pins 33 which define a transverse, horizontal axis of rotation, in order to enable the adjustment also of the inclination of the headrest, beyond the adjustment of the height which is normally provided for.
  • the principle of the invention remaining unchanged, embodiments and manufacturing details may vary widely from those described and illustrated purely by way of non-limiting example.
  • the present invention has been illustrated with reference to a preferred embodiment thereof which provides for a specific arrangement of the driving mechanism (that is, of the linkage and of the associated actuator)
  • the two lower swivelling levers 15 may be replaced by one swivelling lever only, as well as the upper swivelling lever 16 may be replaced by a pair of levers both connected to the rod of the pyrotechnic actuator.
  • the actuator 17 may be of any suitable type, not necessarily a pyrotechnic actuator.

Landscapes

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

Abstract

Le dispositif de commande selon l'invention comprend une structure de support (18) conçue pour être montée sur la partie supérieure du dossier d'un siège de véhicule et un élément de liaison quadrilatéral (15, 16), intercalé entre la structure de support (18) et un corps d'appui-tête (11) et pouvant être actionné par un actionneur pyrotechnique (17), permettant de déplacer le corps (11), en cas de collision, d'une position de repos à une position active avancée et/ou relevée vers la tête de l'occupant du siège. La structure de support (18), l'élément de liaison (15, 16) et l'actionneur (17) sont conçus de manière à être reçus à l'intérieur du corps d'appui-tête (11). Le dispositif de commande comprend également un élément de fixation de type plaque (19) relié à l'élément de liaison (15, 16) et équipé de moyens d'attache (29, 31) permettant la fixation au corps d'appui-tête (11), le corps (11) pouvant ainsi être relié à l'élément de liaison (15, 16) au moyen de l'élément de fixation (19). La structure de support (18), l'élément de liaison (15, 16) et l'élément de fixation de type plaque (19) sont fabriqués par moulage de matières plastiques. La structure de support (18) se présente sous la forme d'un corps unique (18) possédant une partie centrale (18a) sur laquelle les leviers orientables (15, 16) et l'actionneur (17) sont articulés ainsi qu'une paire de parties latérales (18b) conçues pour être montées sur une paire de barres de montage (14) qui peuvent être insérées dans des trous respectifs dans le dossier de siège.
PCT/EP2003/011934 2002-10-29 2003-10-28 Appui-tete actif pour siege de vehicule WO2004039626A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003283309A AU2003283309A1 (en) 2002-10-29 2003-10-28 Active headrest for a vehicle seat
EP03775241A EP1578638A1 (fr) 2002-10-29 2003-10-28 Appui-tete actif pour siege de vehicule

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2002U000190 2002-10-29
IT000190U ITTO20020190U1 (it) 2002-10-29 2002-10-29 Dispositivo di azionamento per un poggiatesta attivo di un sedile di un veicolo

Publications (1)

Publication Number Publication Date
WO2004039626A1 true WO2004039626A1 (fr) 2004-05-13

Family

ID=32211414

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/011934 WO2004039626A1 (fr) 2002-10-29 2003-10-28 Appui-tete actif pour siege de vehicule

Country Status (4)

Country Link
EP (1) EP1578638A1 (fr)
AU (1) AU2003283309A1 (fr)
IT (1) ITTO20020190U1 (fr)
WO (1) WO2004039626A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102442229A (zh) * 2010-10-04 2012-05-09 福特环球技术公司 具有头枕的靠背
US8205941B2 (en) 2008-07-30 2012-06-26 Trw Vehicle Safety Systems Inc. Active head restraint for a vehicle seat
CN102826027A (zh) * 2011-06-17 2012-12-19 焦登科 可自动调整角度和前后位置的车载座椅、沙发靠背头枕
US8833851B2 (en) 2011-05-23 2014-09-16 S Coop Batz Headrest for motor vehicle seats
US8936311B2 (en) 2012-03-28 2015-01-20 Batz S.Coop Headrest for motor vehicle seats

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082817A (en) * 1997-02-27 2000-07-04 Inova Gmbh Technische Entwicklungen Motor vehicle seat
DE19961019C1 (de) * 1999-12-17 2001-02-22 Grammer Ag Antriebseinrichtung für eine Fahrzeugkomponente
US20010040396A1 (en) * 2000-02-03 2001-11-15 Olaf Kreuels Head rest for a vehicle seat
EP1193114A1 (fr) * 2000-09-26 2002-04-03 DaimlerChrysler AG Appui-tête
US20020043858A1 (en) * 2000-06-15 2002-04-18 Anders Svantesson Head-rest
DE10138248C1 (de) * 2001-08-03 2002-12-05 Autoliv Dev Aktive Kopfstütze mit Verriegelungseinrichtung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20020837A1 (it) 2002-09-24 2004-03-25 Gestind Spa Dispositivo per la movimentazione di un cuscino di un appoggiatesta, particolarmente per sedili di veicoli.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6082817A (en) * 1997-02-27 2000-07-04 Inova Gmbh Technische Entwicklungen Motor vehicle seat
DE19961019C1 (de) * 1999-12-17 2001-02-22 Grammer Ag Antriebseinrichtung für eine Fahrzeugkomponente
US20010040396A1 (en) * 2000-02-03 2001-11-15 Olaf Kreuels Head rest for a vehicle seat
US20020043858A1 (en) * 2000-06-15 2002-04-18 Anders Svantesson Head-rest
EP1193114A1 (fr) * 2000-09-26 2002-04-03 DaimlerChrysler AG Appui-tête
DE10138248C1 (de) * 2001-08-03 2002-12-05 Autoliv Dev Aktive Kopfstütze mit Verriegelungseinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1578638A1 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8205941B2 (en) 2008-07-30 2012-06-26 Trw Vehicle Safety Systems Inc. Active head restraint for a vehicle seat
CN102442229A (zh) * 2010-10-04 2012-05-09 福特环球技术公司 具有头枕的靠背
CN102442229B (zh) * 2010-10-04 2016-06-01 福特环球技术公司 具有头枕的靠背
US8833851B2 (en) 2011-05-23 2014-09-16 S Coop Batz Headrest for motor vehicle seats
CN102826027A (zh) * 2011-06-17 2012-12-19 焦登科 可自动调整角度和前后位置的车载座椅、沙发靠背头枕
US8936311B2 (en) 2012-03-28 2015-01-20 Batz S.Coop Headrest for motor vehicle seats

Also Published As

Publication number Publication date
ITTO20020190U1 (it) 2004-04-30
AU2003283309A1 (en) 2004-05-25
EP1578638A1 (fr) 2005-09-28

Similar Documents

Publication Publication Date Title
JP7106988B2 (ja) ヘッドレスト及び車両用シート
US6749256B1 (en) Vehicle seat having a movable head restraint
EP1924465B1 (fr) Systeme d'appui-tete actif
US8851574B2 (en) Folding vehicle head restraint assembly
US7992933B2 (en) Integrated vehicle seat with active head restraint system
EP1744931B1 (fr) Support lombaire et systeme d'appui-tete actif integres
US20090234544A1 (en) Vehicle active head restraint system with a locking linkage
US20060273636A1 (en) Vehicle seat and method of supporting driver/passenger using the same
WO1999012764A1 (fr) Siege de vehicule
US20100127540A1 (en) Active Headrest Apparatus for Vehicle and Actuator Thereof
US7237838B2 (en) Active headrest with decoupled lumbar frame
JPH10138814A (ja) 乗物用ヘッドレスト装置
EP0508964B1 (fr) Siège de véhicules, en particulier pour voitures
EP1578638A1 (fr) Appui-tete actif pour siege de vehicule
JPH10181402A (ja) 車両用シート
EP1526982B1 (fr) Repose-tete actif pour un siege de vehicule
CN113619460B (zh) 车辆座椅的扶手
CN115123032A (zh) 儿童安全座椅
CN114174112A (zh) 用于车辆座椅的头枕
JPH09202167A (ja) サスペンションシート
JPH0632165A (ja) ３人掛けの座席
JP2003312340A (ja) 自動車用シート
JP4164886B2 (ja) 車両の車体構造及びシート装置
JPH10278648A (ja) 自動車用鞭打ち症防止機構付ヘッドレスト
EP1970248B1 (fr) Siège de véhicule motorisé doté d'un moyen pour désactiver son réglage longitudinal

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2003775241

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2003775241

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP