Cushion device

Cushion device

  • CN 1,837,639 B
  • Filed: 03/23/2006
  • Issued: 04/18/2012
  • Est. Priority Date: 03/24/2005
  • Status: Active Grant
First Claim
Patent Images

1. damping device;

  • Use the piston of the aperture that possesses axial connection to be divided into two-part in the axial direction in the cylinder of enclosing viscous fluid;

    Simultaneously, the resistance of the viscous fluid through aperture when utilizing said piston in cylinder, to move vertically makes it produce braking force, it is characterized in that;

    Even the also identical viscous fluid of cardinal principle of the anti-shearing characteristic of said viscous fluid when use having the temperature difference of near comprise at least 0 degree low temperature and normal temperature,On the said axial end portion of said cylinder, be provided with lid, in the inboard of said cylinder, said lid axially forms the cylindrical part of surrounding piston rod highlightedly, and the annular seal parts have been installed in said cylindrical part,And said sealed member is arranged on the axial end portion of the said cylinder that moves with said piston one, piston rod is flexible, is used to prevent that said viscous fluid from leaking,Said sealed member flexibly contacts the inner peripheral surface of the said cylindrical part of said lid,Said piston has inner piece and exterior part;

    Said inner piece and said piston rod are set to one;

    Said exterior part and the outer circumferential face of said inner piece between leave the space and embed slidably in the said inner piece, and be slidingly matched with the inner peripheral surface of said cylinderBetween said inner piece and said exterior part, compression helical spring is installed;

    Said compression helical spring makes said inner piece have elastic potential energy with the direction that said exterior part leaves in the axial direction mutually;


    Said inner piece and exterior part are formed;

    if the stretch into amount of inner piece to the inside of exterior part increases, then said space ladder property narrows down.

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