WO2002022399A2 - Energy dissipating vehicle seat - Google Patents

Energy dissipating vehicle seat Download PDF

Info

Publication number
WO2002022399A2
WO2002022399A2 PCT/US2001/029058 US0129058W WO0222399A2 WO 2002022399 A2 WO2002022399 A2 WO 2002022399A2 US 0129058 W US0129058 W US 0129058W WO 0222399 A2 WO0222399 A2 WO 0222399A2
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle seat
attachment bracket
seat
seat frame
members
Prior art date
Application number
PCT/US2001/029058
Other languages
English (en)
Other versions
WO2002022399A3 (fr
WO2002022399A9 (fr
Inventor
Pascal Emanuel Garrido
Original Assignee
Dura Global Technologies, Inc.
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 Dura Global Technologies, Inc. filed Critical Dura Global Technologies, Inc.
Publication of WO2002022399A2 publication Critical patent/WO2002022399A2/fr
Publication of WO2002022399A3 publication Critical patent/WO2002022399A3/fr
Publication of WO2002022399A9 publication Critical patent/WO2002022399A9/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
    • B60N2/4207—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 characterised by the direction of the g-forces
    • B60N2/4214—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 characterised by the direction of the g-forces longitudinal
    • B60N2/4228—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 characterised by the direction of the g-forces longitudinal due to impact coming from the rear
    • 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
    • B60N2/42709—Seats or parts thereof displaced during a crash involving residual deformation or fracture of the structure

Definitions

  • the present invention generally relates to a reclining vehicle seat assembly and, . more particularly, to such a seat assembly having a bracket dissipating energy of a seat back with respect to the lower seat frame in a collision having a high energy impact.
  • the present invention overcomes at least some of the problems of the related art by providing a vehicle seat assembly comprising, in combination, a lower seat frame, a seat back pivotally connected with respect to the lower seat frame, and a recliner mechanism secured between the seat back and the lower seat frame for adjusting the angle of the seat back relative to the lower seat frame.
  • An attachment bracket is secured between lower seat frame and the recliner mechanism.
  • the attachment bracket is adapted to behave as a four- bar linkage in a vehicle collision when a force is applied to the seat back.
  • the attachment bracket can be adapted to move the seat back rearwardly and downwardly in a collision without pivoting the seat back relative o the recliner mechanism.
  • FIG. 1 is schematic view of a vehicle seat assembly according to the present invention
  • FIG. 2 is a schematic view showing collapse of a prior art vehicle seat assembly during a crash situation having a high energy impact
  • FIG. 3 is a schematic view, similar to FIG. 2, but showing collapse of the vehicle seat assembly of FIG. 1 during a crash situation having a high energy impact
  • FIG. 4 is an enlarged, fragmented view of the prior art vehicle seat assembly of FIG. 2 showing the recliner attachment bracket
  • FIG. 5 is an enlarged, fragmented view, similar to FIG.
  • FIG. 4 is an enlarged, fragmented view, similar to FIGS. 5, but showing a one-piece, stamped, recliner attachment bracket according to the present invention which behaves like the bracket of FIG. 5 having four-bar linkage configuration under a crash situation with a high energy impact.
  • FIG. 6 is an enlarged, fragmented view, similar to FIGS. 5, but showing a one-piece, stamped, recliner attachment bracket according to the present invention which behaves like the bracket of FIG. 5 having four-bar linkage configuration under a crash situation with a high energy impact.
  • FIG. 1 schematically illustrates a vehicle seat assembly 10 according to the present invention.
  • the vehicle seat assembly 10 includes a seat bottom or lower seat frame 12, and a seat back 14 pivotally attached to the lower seat frame 12 by a recliner mechanism 16.
  • the recliner mechanism 16 forms a horizontally and transversely extending pivot axis for the seat back 14 so that the angular position of the seat back 14 relative to the lower seat frame 12 can be adjusted by the occupant.
  • the recliner mechanism 16 is secured to the lower seat frame 12 by a recliner attachment bracket 18.
  • a lower end of the recliner attachment bracket 18 is rigidly secured to the lower seat frame 12.
  • An upper end of the attachment bracket 18 is rigidly secured to the recliner mechanism 16.
  • the seat back 14 is secured to the recliner mechanism 16 so that the recliner mechanism 16 connects the seat back 14 to the attachment bracket 18 and the attachment bracket 18 connects the reclining mechanism 16 to the lower seat framel2.
  • the attachment bracket 18 is in the configuration of a four-bar linkage such that it collapses in a desired manner during a collision as described in more detail hereinafter.
  • the illustrated attachment bracket has generally horizontal top and bottom bar members 18a, 18b which are connected at their ends by substantially vertical front and back bar members, each of the bar members are connected by a joint 19 which is pivotable upon predetermined loading indicating a vehicle crash.
  • the joint 19 can be of any suitable type such as, for example, a pivot or a deformation zone.
  • the seat back 14 is generally rigidly connected to the top bar member 18a and the bottom bar member 18b is generally rigidly connected to the seat frame 12.
  • FIG. 2 schematically illustrates the behavior of a prior art vehicle seat assembly 100 during a rear end collision having a high energy impact.
  • the prior art seat assembly 100 is generally the same as the vehicle seat assembly 10 described hereinabove with regard to FIG. 1 except that a generally rigid attachment bracket 20 secures the recliner mechanism 16 to the lower seat frame 12.
  • a rearward force 22 is applied to the seat back 14 due to the high energy impact, the seat frame collapses in a pure bending fashion. That is, the seat back 14 pivots in a rearward direction about the pivot axis and relative to the attachment bracket 20 and seat frame 12.
  • FIG. 3 schematically illustrates the behavior of the vehicle seat assembly 10 of FIG. 1 during a rear end collision having a high energy impact.
  • the recliner attachment bracket 18 fails in a controlled manner.
  • the illustrated recliner attachment bracket 18 behaves as a four-bar linkage such that the seat back 14 pivots such that it moves in a rearward and downward direction wherein it remains generally in the same angular orientation relative to the lower seat frame 12, that is, the seat back does not pivot about the pivot axis of the recliner mechanism.
  • the connection between the top bar 18a and the seat back 14 remains rigid to generally prevent movement therebetween and the connection between the bottom bar member 18b remains generally rigid to generally prevent movement therebetween.
  • the controlled movement of the four-bar linkage is provided by the pivoting movement of the front and back bar members 18c, 18d relative to the top and bottom bar members 18a, 18b.
  • the pivoting movement being provided at the pivoting j oints 19. It is noted that while FIG.
  • FIG. 3 illustrates behavior during a rear end collision
  • the attachment bracket 18 can be adapted for similar advantageous behavior in front end collisions when the occupant seat belt is secured to the seat back 14, head rest, or other seat assembly component such that a forward force is applied to the seat back 14 from the occupant through the seat belt.
  • FIG. 4 is an enlarged view of the generally rigid attachment bracket 20 of the vehicle seat assembly 100 of FIG. 2.
  • FIG. 5 is an enlarged view of the recliner attachment bracket 18 of the vehicle seat assembly 10 of FIGS. 1 and 3 wherein the attachment bracket 18 has a four-bar linkage configuration.
  • the attachment bracket 18 is designed to behave the same as the prior art attachment bracket 20 during normal operating conditions of the vehicle seat assembly 10 but is designed to collapse as described hereinabove during collisions.
  • FIG. 4 is an enlarged view of the generally rigid attachment bracket 20 of the vehicle seat assembly 100 of FIG. 2.
  • FIG. 5 is an enlarged view of the recliner attachment bracket 18 of the vehicle seat assembly 10 of FIGS. 1 and 3 wherein the attachment
  • the attachment bracket 18 can be a one-piece member, that is, a unitary member of continuous material without having pivoting joints like a four-bar linkage.
  • the illustrated single piece attachment bracket 18 has a generally square-tube shape in cross- section.
  • Generally parallel and offset top and bottom members 24, 26 are connected by generally parallel and offset side members 28, 30 which connect the ends of the top and bottom members 24, 26.
  • the top member 28 is attached to the reclining mechanism 16 while the lower member 26 is attached to the lower seat frame 12.
  • the one-piece attachment member 18 is sized and shaped to behave like the four-bar linkage during collisions.
  • the one piece attachment bracket 18 can be made of any suitable material such as, for example, a steel, and can be formed by any suitable process such as, for example, stamping.
  • the one piece attachment bracket can also take many other suitable shapes. It should be appreciated from the forgoing description that the vehicle seat assembly 10 may reduce injuries to the occupant and may reduce energy transmitted to the floor of the vehicle resulting in reduced weight and cost. From the foregoing disclosure and detailed description of certain preferred embodiments, it will be apparent that various modifications, additions and other alternative embodiments are possible without departing from the true scope and spirit of the present invention. For example, it will be apparent to those skilled in the art, given the benefit of the present disclosure, that the attachment bracket 18 can each have many different configurations and materials.

Landscapes

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

Abstract

A vehicle seat assembly (10) includes a lower seat frame (12), a seat back (14) pivotally connected with respect to the lower seat frame (12), and a recliner mechanism (16) secured between the seat back (14) and the lower seat frame (12) for adjusting the angle of the seat back (14) relative to the lower seat frame (12). An attachment bracket (18) is secured between lower seat frame (12) and the recliner mechanism (16). The attachment bracket (18) is adapted to behave as a four-bar linkage in a vehicle collision when a force is applied to the seat backe (14). The attachment bracket (18) preferably includes a top member (18a) secured to the seat backe (14), a bottom member (18b) secured to the lower seat farme (12), and front and back members (18c, 18d) connecting the ends of the top and bottom members (18a, 18b). Various embodiments are disclosed wherein the top, bottom, front, and back members (18a, 18b, 18c, 18d) are separate members joined by pivoting joints (19) or part of a one-piece member joined by zones of deformable material.
PCT/US2001/029058 2000-09-18 2001-09-18 Energy dissipating vehicle seat WO2002022399A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23361800P 2000-09-18 2000-09-18
US60/233,618 2000-09-18

Publications (3)

Publication Number Publication Date
WO2002022399A2 true WO2002022399A2 (fr) 2002-03-21
WO2002022399A3 WO2002022399A3 (fr) 2002-05-16
WO2002022399A9 WO2002022399A9 (fr) 2002-07-25

Family

ID=22878008

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/029058 WO2002022399A2 (fr) 2000-09-18 2001-09-18 Energy dissipating vehicle seat

Country Status (1)

Country Link
WO (1) WO2002022399A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10223525A1 (de) * 2002-05-27 2003-12-11 Trw Repa Gmbh Fahrzeugsitz
FR2901197A1 (fr) * 2006-05-22 2007-11-23 Cera Siege de vehicule automobile integrant une partie monobloc deformable elastiquement
WO2009091300A1 (fr) * 2008-01-15 2009-07-23 Autoliv Development Ab Siège comprenant un mécanisme anti-coup du lapin et procédé pour adapter un tel mécanisme à un siège
WO2013122071A1 (fr) * 2012-02-14 2013-08-22 テイ・エス テック株式会社 Siège de véhicule

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5676421A (en) * 1996-06-20 1997-10-14 Lear Corporation Vehicle seat energy absorbing mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5676421A (en) * 1996-06-20 1997-10-14 Lear Corporation Vehicle seat energy absorbing mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10223525A1 (de) * 2002-05-27 2003-12-11 Trw Repa Gmbh Fahrzeugsitz
FR2901197A1 (fr) * 2006-05-22 2007-11-23 Cera Siege de vehicule automobile integrant une partie monobloc deformable elastiquement
EP1859988A1 (fr) * 2006-05-22 2007-11-28 Centre d'etude et de recherche pour l'automobile (CERA) Siège de véhicule automobile intégrant une partie monobloc déformable élastiquement
WO2009091300A1 (fr) * 2008-01-15 2009-07-23 Autoliv Development Ab Siège comprenant un mécanisme anti-coup du lapin et procédé pour adapter un tel mécanisme à un siège
WO2013122071A1 (fr) * 2012-02-14 2013-08-22 テイ・エス テック株式会社 Siège de véhicule
JP2013166411A (ja) * 2012-02-14 2013-08-29 Ts Tech Co Ltd 乗物用シート

Also Published As

Publication number Publication date
WO2002022399A3 (fr) 2002-05-16
WO2002022399A9 (fr) 2002-07-25

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