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CRASHWORTHY SEAT FOR A VEHICLE

  • US 20090267390A1
  • Filed: 04/28/2009
  • Published: 10/29/2009
  • Est. Priority Date: 04/28/2008
  • Status: Active Grant
First Claim
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1. A crashworthy seat for a vehicle comprising:

  • a stand including a first and a second foot connected mechanically to a first and a second vertical support leg;

    a pan connected by the stand to a floor wherein the first and the second feet are disposed on each side of the pan, the pan including a seat proper and a seat back, wherein the seat back has a support element secured to the first and the second vertical support legs configured to support the seat back and a guide element configured to guide the pan in translation;

    an energy absorber device;

    wherein the guide element and the energy absorber device are configured to communicate with a control element secured to the seat back, the control element configured to guide a movement of the pan in translation in a predetermined direction during a crash and the energy absorber device configured to absorb kinetic energy of the seat so as to control a deceleration of the pan,wherein the energy absorber device includes at least one energy absorber element configured to deform plastically in traction and having an absorber portion having first and second distal ends and having a first elongate element and a second elongate element facing the first elongate element and connected to the second element solely at the first and second distal ends;

    a first anchor point secured to the first distal end of the absorber portion; and

    a second anchor point secured to the second distal end of the absorber portion,wherein each of the first and second elongate elements includes a succession of straight-line segments parallel to one another and at least one circularly-arcuate segment such that at least two successive straight-line segments are connected together by one of the at least one circularly-arcuate segments, wherein the first and the second elongate elements are solid elements and are defined by a constant thickness.wherein each succession of straight-line segments includes a primary straight-line segment disposed at the first distal end, and a secondary straight-line element disposed at the second distal end, wherein the primary straight-line segments of the first and second elongate elements are connected to each other and the secondary straight-line segments of the first and second elongate elements are connected to each other, and wherein the first and the second elongate elements deform elastically when subjected to traction below a predetermined threshold and plastically when subjected to traction above the predetermined threshold.

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