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Stepless Adjustable Supporting Device

  • US 20080099637A1
  • Filed: 10/19/2006
  • Published: 05/01/2008
  • Est. Priority Date: 10/19/2006
  • Status: Abandoned Application
First Claim
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1. A stepless adjustable supporting device, comprising:

  • a base having an accommodating space therein, an opening formed on the top of the accommodating space;

    a lifting arm comprising a first arm body fixed within the accommodating space and a second arm body slidably lifting on the first arm body, the second arm body extending from the opening;

    a transmission wheel assembly comprising a transmission wheel pivoted to the base and a driving piece operatively connected with the transmission wheel, the driving piece fixed on the second arm body, a lifting/lowering action of the second arm body driving the transmission wheel to rotate; and

    an elastic module comprising an elastic element and a swinging rod connected to one end of the elastic element, the other end of the elastic element positioned on the base,wherein the transmission wheel is provided with an eccentric groove thereon, the swinging rod has a swinging portion connected onto the eccentric groove, so that the swinging portion is movable on the eccentric groove when the transmission wheel rotates, andwherein the applied torque generated by the supported article with respect to the supporting device is kept equal to the load torque generated by the supporting device, thereby to achieve a stepless adjustment of various lengths and a supporting effect.

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