Tension mechanism for a weight-responsive chair

Tension mechanism for a weight-responsive chair

  • CN 102,098,945 B
  • Filed: 05/01/2009
  • Issued: 11/06/2013
  • Est. Priority Date: 05/02/2008
  • Status: Active Grant
First Claim
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1. gravimetric response formula chair comprises:

  • Chair frame;

    Seat, described seat forwardly divide by front pivot link and are supported on pivotally on described chair frame, and described seat comprises the rear section that is stacked and placed on described chair frame;

    backrest, the pivotal point that described backrest is included in the two opposite sides of described chair frame is pivotally connected to the backrest erection part of described chair frame, and the coupling bar that each the described pivotal point that comprises the described backrest from the described rear section that is connected to described seat extends forward, described front pivot link, described chair frame, the described coupling bar of described seat and described backrest erection part defines the four-bar linkage, wherein, the rising of the described rear section that the receding of described backrest erection part realized described seat, wherein, the receding of described backrest erection part makes the described coupling bar pivotable that makes progress, rise thereby make on described seat against user'"'"'s gravity, andtension mechanism, described tension mechanism is connected between described chair frame and described backrest erection part, so that for the inclination of described backrest erection part provides relatively low-level resistance, described tension mechanism comprises be used to making described seat and backrest return to the bias unit of stand up position, described chair frame comprises the erection column along oriented sideways adjacent with described pivotal point, and fixed head, and described tension mechanism also comprises the sub-component that is installed on each described erection column, described sub-component comprises swivel bearing and is supported on bias spring and rotatable plate on described bearing, described bearing is installed to again on described erection column, so that described spring and described fixed head and rotatable plate coordinated, and described rotatable plate can be around the axis rotation of described bearing, described rotatable plate is connected on described backrest erection part, take with its rotation and as tilt producing described low-level resistance.

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