WO2008068372A1 - Appuie-tête pour sièges de véhicules automobiles - Google Patents

Appuie-tête pour sièges de véhicules automobiles Download PDF

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Publication number
WO2008068372A1
WO2008068372A1 PCT/ES2007/070188 ES2007070188W WO2008068372A1 WO 2008068372 A1 WO2008068372 A1 WO 2008068372A1 ES 2007070188 W ES2007070188 W ES 2007070188W WO 2008068372 A1 WO2008068372 A1 WO 2008068372A1
Authority
WO
WIPO (PCT)
Prior art keywords
headrest
mobile support
support
locking
fixed
Prior art date
Application number
PCT/ES2007/070188
Other languages
English (en)
Spanish (es)
Inventor
Alberto Cuadrado Gonzalez
Joseba Palacio Argüelles
Original Assignee
Batz, S.Coop.
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 Batz, S.Coop. filed Critical Batz, S.Coop.
Publication of WO2008068372A1 publication Critical patent/WO2008068372A1/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 present invention relates to head restraints for motor vehicle seats, adapted to reduce the risk of injury by the user to a possible collision.
  • Headrests which comprise two bodies, one anterior and the other posterior, the anterior body being movable between a resting position, in which the anterior body is attached to the posterior body, and another active for the case in which the vehicle receives a subsequent impact
  • the anterior body In said active position the anterior body is separated from the posterior body and moved towards the seat occupant, thus reducing the travel of the occupant's head until reaching its support in the headrest, and therefore also reducing the phenomenon known as "whiplash ".
  • the mechanisms for the displacement of the front body of the headrest are usually based on the action of a spring, of a hydraulic system etc.
  • ES-1052173-U describes an active headrest for automobile vehicle seats comprising a rear body attached to a fixed support, an anterior body attached to a movable mobile support with respect to said fixed support, and drive means for moving said mobile support from a resting position to an active position of the headrest.
  • Mobile support tilts with respect to an axis, to move from said rest position to said active position.
  • ES-1063006-U discloses a headrest comprising a rear body attached to a fixed support, an anterior body attached to a movable mobile support with respect to said fixed support, drive means for moving said mobile support from a rest position to a active position of the headrest, and at least one tilting arm attached at one end to the fixed support and attached at the other end to the mobile support, causing the actuating means that said tilting arm pivots when actuated and causing said pivoting the displacement of said mobile support from the rest position to the active position.
  • the object of the invention is to provide a headrest for motor vehicle seats, which reduces the risk of a user suffering from the phenomenon known as "whiplash" in the event of a vehicle collision.
  • the headrest of the invention comprises a fixed rear support, a movable anterior mobile support with respect to said fixed support, actuation means for moving said mobile support from a rest position to an active position of the headrest, and at least one attached swing arm at one end to the fixed support and attached at the other end to the mobile support, the actuating means causing said swing arm to pivot when they are actuated and causing said pivoting to move said mobile support from the rest position to the position active
  • the tilting arm comprises a toothed sector and the headrest comprises locking means comprising at least one locking arm that is attached at a first end to the mobile support with the possibility of rotation and which is supported at a second end on the toothed sector. Said second end cooperates with said toothed sector to prevent the backing of said mobile support towards the rest position when the actuating means causes said mobile support to move to the active position.
  • the head restraint drive means causes the front mobile support to move forward to move to the active position and stop the user's head recoil. It may happen that the head of the user hits the headrest before the previous mobile support reaches the end of its travel, thereby there is a risk that said mobile support moves back to its resting position.
  • this recoil is avoided by means of the blocking means, since said blocking means allow the movement of the mobile support in only one direction: from the rest position to the active position.
  • FIG. 1 shows a side view of an embodiment of the headrest of the invention in the rest position.
  • FIG. 2 is a side view of the embodiment of FIG. 1 in active position.
  • FIG. 3 is a first perspective view of the embodiment of FIG. 1 in active position.
  • FIG. 4 is a second perspective view of the embodiment of FIG. 1 in active position.
  • FIG. 5 is a partial perspective view of the embodiment of FIG. 1 in active position.
  • FIG. 6 is a partial perspective view of the embodiment of FIG. 1 in active position and with locking means engaged.
  • the headrest 1 of the invention comprises a fixed rear support 3, a movable front support 5 movable with respect to said fixed support 3, and actuation means for moving said movable support from a rest position, shown in figure 1, to an active position, shown in the other figures.
  • the fixed rear support 3 and the anterior mobile support 5 are coated respectively with a fluffy rear body and anterior body (not shown in the figures) comprising, for example, a viscoelastic foam.
  • the fixed support 3 is connected to two parallel columns 7 connected to the seat back (not shown in the figures).
  • the headrest 1 comprises two tilting arms 7 attached at one end to the fixed support 3 and attached at the other end to the mobile support 5.
  • the actuation means of the headrest 1 cause said tilting arms 7 to pivot when they are actuated, causing said pivoting to move said mobile support 5 from the rest position to the active position.
  • the actuation means which are fixed to the fixed support 3, comprise an electromagnet 6 with its corresponding permanent magnet and its corresponding coil, and a pusher 6a comprising a metallic element 6b and acting on the swinging arms 7.
  • the actuating means also comprise, on both sides of the electromagnet 6, two springs 30 housed in their corresponding support axes 31, said springs 30 exerting a determined force on the pusher 6a. Under normal conditions, said pusher 6a is in contact with said electromagnet 6, since the permanent magnet of the electromagnet 6 attracts the metallic element 6b and exceeds the force that the springs 30 exert on the pusher 6a.
  • the coil of the electromagnet 6 is fed and creates a magnetic field that counteracts the force of the permanent magnet and causes the pusher 6a to move.
  • the force exerted by the springs 30 is calculated so that the mobile support 3 moves quickly enough to reach the user's head before suffering any cervical injury, but also soft enough not to damage the user.
  • the tilting arms 7 are attached at one end to a transverse pivot axis 8 attached to the fixed support 3 and at the other end to a transverse joint axis 9 attached to the movable support 5. Said tilting arms 7 are also attached to an axis of transverse drive 10, at a point substantially close to pivot axis 8, said drive shaft 10 being attached to pusher 6a. Said pusher 6a comprises in this embodiment two parallel arms 6c that are crossed by said drive shaft 10. Thus, in the event of a collision, pusher 6a moves the drive shaft 10, pivoting the swing arms 7 with respect to its corresponding axis. pivot 8, thus moving the mobile support 5 from the rest position to the active position.
  • Said displacement of the mobile support 5 combines a tilting with a vertical displacement, whereby said headrest 1 is better adjusted to the position of the occupant's head than in the case that said displacement is solely of tilting.
  • the metallic element 6b is again placed in contact with the electromagnet 6.
  • the headrest 1 of the invention comprises two auxiliary arms 12 that provide rigidity to the headrest 1.
  • Each of said auxiliary arms 12 is attached at one end to a transverse auxiliary pivot axis 14 attached to the fixed support 3 and at the other end to a transverse auxiliary joint shaft 15 attached to the mobile support 5.
  • Said auxiliary arms 12 are arranged on one side of both fixed and mobile supports 3, 4, and aligned with the tilting arms 7.
  • the design of the tilting and auxiliary arms 7 of the headrest 1 can be varied, thus obtaining for each specific design a corresponding displacement of the movable support 5.
  • the swinging arms 7 comprise two non-aligned sections: a first straight section between the pivot axis 8 and the drive shaft 10, and a second section between the drive shaft 10 and the joint axis 9.
  • each tilting arm 7 comprises a toothed sector 18, and the headrest 1 comprises said locking means comprising in this embodiment two locking arms 19 which are connected at a first end to the mobile support 5 with possibility of rotation and that they are supported at a second end on the toothed sector 18, said second end cooperating with said toothed sector 18 to prevent the recoil of said mobile support 5 towards the rest position when the actuating means cause the displacement of said 5 mobile support to the active position.
  • Each locking arm 19 comprises, as seen in Figure 5, a torsion spring 33 which causes the locking arm 19 to press against the toothed sector 18 of its corresponding swing arm 7.
  • the blocking means comprise in this embodiment manual reset means comprising, two handles 23 for releasing the locking arms 19 from the corresponding toothed sector 18 when the mobile support 5 is in the active position, and elastic coupling means 24, shown in 5 to engage the blocking means in a projection 21 disposed in the mobile support 5 by moving said blocking means towards said mobile support 5. Said engagement means 24 are released from said projection 21 when the mobile support 5 It is moved to the resting position.
  • the locking means comprise, as also shown in Figure 5, a transverse axis 26 that joins both locking arms 19, the handles 23 being joined to the ends of the transverse axis 23.
  • the coupling means 24 are arranged in the space between the two locking arms 19 and fixed to said transverse axis 26.
  • the coupling means 24 comprise a projection 22 and two extensions 25.
  • Figure 6 shows the headrest 1 in active position and with the locking means engaged in the shoulder 21 of the fixed support 3. It is observed that it is the projection 22 of the hooking means 24 that engages in said shoulder 21.
  • the extensions 25 are pushed by the drive shaft 10, releasing said engaging means 24 from the shoulder 21 and causing the headrest 1 to return to its position of original rest.

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 appuie-tête pour sièges de véhicules automobiles comprenant un support fixe arrière (3), un support mobile avant (5) pouvant être déplacé par rapport audit support fixe (3) et des moyens d'actionnement permettant de déplacer ledit support mobile (5) d'une position de repos à une position active de l'appuie-tête (1). L'appuie-tête comprend, de plus, au moins un bras basculant (7) relié par une extrémité au support fixe (3) et par l'autre extrémité au support mobile (5), les moyens d'actionnement permettant au bras basculant (7) de pivoter lorsqu'ils sont actionnés, ce pivotement entraînant le déplacement dudit support mobile (5). L'appuie-tête (1) comprend également des moyens de blocage pour empêcher le retour dudit support mobile (5) vers la position de repos lorsque les moyens d'actionnement provoquent le déplacement dudit support mobile (5) sur la position active.
PCT/ES2007/070188 2006-12-05 2007-11-15 Appuie-tête pour sièges de véhicules automobiles WO2008068372A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESU200602636 2006-12-05
ES200602636U ES1064266Y (es) 2006-12-05 2006-12-05 Reposacabezas para asientos de vehiculos automoviles

Publications (1)

Publication Number Publication Date
WO2008068372A1 true WO2008068372A1 (fr) 2008-06-12

Family

ID=38291823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2007/070188 WO2008068372A1 (fr) 2006-12-05 2007-11-15 Appuie-tête pour sièges de véhicules automobiles

Country Status (2)

Country Link
ES (1) ES1064266Y (fr)
WO (1) WO2008068372A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2361801A1 (fr) * 2010-02-23 2011-08-31 Dymos Incorporated Appui-tête actif
CN102166973A (zh) * 2010-02-26 2011-08-31 大力摩世株式会社 活动头枕
CN106536273A (zh) * 2014-07-01 2017-03-22 现代岱摩斯 头枕倾角调节模块
DE102018106698A1 (de) * 2018-03-21 2019-09-26 Grammer Ag Kopfstütze
EP3590760A1 (fr) * 2018-07-05 2020-01-08 Grammer Ag Appuie-tête

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017104761B4 (de) 2017-03-07 2022-09-22 Faurecia Autositze Gmbh Verstellvorrichtung für eine Kopfstütze eines Fahrzeugsitzes und Fahrzeugsitz mit der Verstellvorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2973029A (en) * 1958-06-16 1961-02-28 Clifford F Schlosstein Passenger safety equipment for automobile
DE19951966A1 (de) * 1999-10-28 2001-05-03 Bayerische Motoren Werke Ag Fahrzeugsitz mit einer an der Rückenlehne oder am Fahrzeugaufbau vorgesehenen Kopfstütze
US20020043860A1 (en) * 2000-03-16 2002-04-18 Emil Dinkel Head restraint for a vehicle seat
US20030057758A1 (en) * 2000-09-26 2003-03-27 Karl-Heinz Baumann Head restraint
DE10224060C1 (de) * 2002-05-31 2003-07-24 Daimler Chrysler Ag Kopfstütze für einen Fahrzeugsitz
US20050127726A1 (en) * 2002-12-21 2005-06-16 Jurgen Schilling Crash-active headrest
US20060071518A1 (en) * 2003-06-05 2006-04-06 Keiper Gmbh & Co. Kg Crash-active headrest

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2973029A (en) * 1958-06-16 1961-02-28 Clifford F Schlosstein Passenger safety equipment for automobile
DE19951966A1 (de) * 1999-10-28 2001-05-03 Bayerische Motoren Werke Ag Fahrzeugsitz mit einer an der Rückenlehne oder am Fahrzeugaufbau vorgesehenen Kopfstütze
US20020043860A1 (en) * 2000-03-16 2002-04-18 Emil Dinkel Head restraint for a vehicle seat
US20030057758A1 (en) * 2000-09-26 2003-03-27 Karl-Heinz Baumann Head restraint
DE10224060C1 (de) * 2002-05-31 2003-07-24 Daimler Chrysler Ag Kopfstütze für einen Fahrzeugsitz
US20050127726A1 (en) * 2002-12-21 2005-06-16 Jurgen Schilling Crash-active headrest
US20060071518A1 (en) * 2003-06-05 2006-04-06 Keiper Gmbh & Co. Kg Crash-active headrest

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2361801A1 (fr) * 2010-02-23 2011-08-31 Dymos Incorporated Appui-tête actif
CN102166973A (zh) * 2010-02-26 2011-08-31 大力摩世株式会社 活动头枕
CN102166973B (zh) * 2010-02-26 2013-05-22 大力摩世株式会社 活动头枕
CN106536273A (zh) * 2014-07-01 2017-03-22 现代岱摩斯 头枕倾角调节模块
CN106536273B (zh) * 2014-07-01 2019-07-05 现代岱摩斯 头枕倾角调节模块
DE102018106698A1 (de) * 2018-03-21 2019-09-26 Grammer Ag Kopfstütze
CN110293889A (zh) * 2018-03-21 2019-10-01 格瑞玛股份公司 头枕
CN110293889B (zh) * 2018-03-21 2021-11-30 格瑞玛股份公司 头枕
EP3590760A1 (fr) * 2018-07-05 2020-01-08 Grammer Ag Appuie-tête
CN110682842A (zh) * 2018-07-05 2020-01-14 格瑞玛股份公司 头部支撑设备

Also Published As

Publication number Publication date
ES1064266U (es) 2007-02-16
ES1064266Y (es) 2007-05-16

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