Armrest arrangement for foldable chair
OwnerEdward Zhenginventor
Life of this patent
Estimating the term…
Abstract
An armrest arrangement, which is incorporated with a chair frame, includes two arm rests pivotally connected to two back supporting arms of a chair frame respectively and two arm supports, which are pivotally connected to two seat side supports of the chair frame respectively, each having an upper end slidably connected to the respective arm rest for supporting the arm rest at an unfolded position of the chair frame. At a folded position, the arm rests are pivotally and upwardly folded towards the back supporting arms respectively so as to fold up the chair frame correspondingly, and at the unfolded position, the arm rests are pivotally folded to transversely extended from the back supporting arms so as to provide two arm resting surfaces respectively for substantially supporting user's arms thereon.
Claims32
A foldable chair, comprising a chair frame and a chair seat supported by said chair frame, wherein said chair frame comprises:
- a front frame comprising a first front frame leg and a second front frame leg pivotally connected with each other to form a “X” structure;
- a rear frame comprising a first rear frame leg and a second rear frame leg pivotally connected with each other to form a “X” structure;
- two side frames, each comprising a seat side support, a front side frame leg upwardly and rearwardly extending to pivotally connect with said seat side support, and a rear side frame leg upwardly and frontwardly extending to pivotally connect with said seat side support, each of said side frames further comprising a back supporting arm upwardly extended from said respective seat side support, wherein said first and second front frame legs of said front frame are pivotally connected between front sides of said side frames, wherein upper ends of said first and second rear frame legs of said rear frame are pivotally connected to said back supporting arms respectively while bottom ends of said first and second rear frame legs are pivotally connected to said rear side frame legs respectively, wherein a bottom portion of each of said front and rear side frame legs defines a ground portion of said chair frame and forms as a ground supporting post for supporting said chair frame;
- and
- means for retaining said chair frame at an unfolded position, wherein at said unfolded position, said front side frame leg is pivotally moved to said rear side frame leg of each of said side frames at a folding angle while said front and rear frames are pivotally folding to lengthen a distance between said side frames, and at a folded position, said front side frame leg is pivotally moved toward said rear side frame leg of each of said side frames to minimize said folding angle thereof while said front and rear frames are pivotally folding to minimize said distance between said two side frames.
A foldable chair, comprising a chair frame, a chair seat supported by said chair frame, and an armrest arrangement;
- wherein said chair frame comprises:
- a front frame comprising a first front frame leg and a second front frame leg pivotally connected with each other to form a “X” structure;
- a rear frame comprising a first rear frame leg and a second rear frame leg pivotally connected with each other to form a “X” structure;
- two side frames, each comprising a seat side support, a front side frame leg upwardly and rearwardly extending to pivotally connect with said seat side support, and a rear side frame leg upwardly and frontwardly extending to pivotally connect with said seat side support, wherein said first and second front frame legs of said front frame are pivotally connected between front sides of said side frames and said first and second rear frame legs of said rear frame are pivotally connected between rear sides of said side frames, each of said side frames further comprising a back supporting arm upwardly extended from said respective seat side support;
- and
- means for retaining said chair frame at an unfolded position, wherein at said unfolded position, said front side frame leg is pivotally moved to said rear side frame leg of each of said side frames at a predetermined folding angle while said front and rear frames are pivotally folding to lengthen a distance between said side frames, and at a folded position, said front side frame leg is pivotally moved toward said rear side frame leg of each of said side frames to minimize said folding angle thereof while said front and rear frames are pivotally folding to minimize said distance between said two side frames;
- wherein said armrest arrangement comprising two arm rests pivotally connected to said back supporting arms respectively and means for supporting said arm rest at said unfolded position of said chair frame, wherein at said folded position, said arm rests are pivotally and upwardly folded towards said back supporting arms respectively, and at said unfolded position, said arm rests are pivotally folded to transversely extend from said back supporting arms so as to provide two arm resting surfaces respectively for substantially supporting arms of a user thereon.
Dependencies are inferred from the claim text.