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Multimodular multistage high impact collision energy absorber

  • US 20070205066A1
  • Filed: 03/06/2006
  • Published: 09/06/2007
  • Est. Priority Date: 03/06/2006
  • Status: Abandoned Application
First Claim
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1. A multistage collision impact absorber device in the form of a longitudinal cylindrical housing made up of two equal parts that are fitted together to form a cylindrical housing;

  • with concentric grooves at regular or irregular intervals at the inner wall of the cylinder to accommodate a series of metallic convex plates designated as sectional shear plates, perpendicular to the wall of the cylinder;

    with a flange cover at both ends of the cylinder;

    with a strip of thickened layer of the housing wall running along the length at the top and bottom in alignment with the cutter face of the axial shaft;

    with fasteners that clamp the two halves of the body together and with clamps that integrate the housing with the chassis of the host body;

    fixed to the inner wall grooves are a series of sectional shear plates that are placed perpendicular to the axis of the cylindrical housing that have a hole in their center, with convexities at both sides and a fragmentation facilitation grooves at the edge of plate on both sides where the plates meet the groove;

    the outer rim outside the shear grooves remaining inside the inner positioning grooves of the cylindrical body;

    an axial ram shaft with a outer buffer plate and an inner buffer ram head with convexity that faces the first sectional shear plate inside the housing;

    the shaft of the ram rod running along the length of the housing passing through the central hole of every sectional shear plates to the rear end of the housing;

    this shaft also has a cutter plate that is aligned to the thickened outer layers of the cylindrical housing;

    on impact the outer buffer plate of the axial ram shaft transfers the impact load by moving inwards;

    this movement causing the inner buffer head of the ram shaft colliding with the first of the sectional shear plate causing it to dislocate from the inner groove of the housing and move towards the second shear plate which in turn impacted by both the inner buffer head as well as the first of the dislocated shear plate;

    the second shear plate is dislocated by this motion and moves on to the third plate and so on till the last of the shear plates are dislocated leaving behind the outer rim of the sectional shear plates to remain in the inner groove of the cylinder;

    the impact load of the collision being dissipated in the process of shearing the series of sectional shear plates;

    the device fitted to anticipated collision impact regions as an extension of the basic structural frame of the host vehicle and integrated with it.

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