Tensional seat support arrangement for collapsible chair
OwnerEdward Zhenginventor
Life of this patent
Estimating the term…
Abstract
A tensional support arrangement includes a pair of guiding holders rotatably connected to back supporting frame legs respectively and a pair of side supporting arms, which are positioned at two outer sides of a chair frame, each has a support portion pivotally connected to the respective front joint at a front end thereof and a guiding portion slidably connected to the respective guiding holder, wherein two side edge portions of a seat fabric are substantially supported by the support portions of the side supporting arms respectively. Therefore, the tensional support arrangement is capable of substantially increasing the supporting area of the fabric seat to more evenly distribute and support the downward pulling force and stress applied by the user's weight.
Claims30
A collapsible chair, comprising:
- a chair frame, having a seat frame comprising:
- two side frames, each comprising a first frame leg and a second frame leg pivotally coupled with each other to form an x-shape structure,
- a front frame comprising a first frame leg and a second frame leg pivotally coupled with each other to form an x-shape structure,
- a rear frame comprising a first rear frame leg and a second rear frame leg pivotally coupled with each other to form an x-shaped structure,
- a pair of front frame joints pivotally connected with two upper ends of said first frame legs and two upper ends of said two front frame legs respectively,
- a pair of back supporting frame joints pivotally connected with two upper ends of said second frame legs and two upper ends of said two rear frame legs respectively, and
- a back supporting frame comprising a pair of back supporting frame legs extending upwardly through said two back supporting frame joints respectively;
- and
- a tensional support arrangement, which comprises:
- a pair of guiding holders provided at said two back supporting frame legs respectively;
- and
- a pair of side supporting arms, which are positioned at two outer sides of said seat frame, wherein each of said side supporting arms has a support portion having a front end pivotally connected to said respective front joint and a guiding portion which is rearwardly extended from said support portion and slidably supported by said respective guiding holder;
- and
- a seat fabric, which has two side edge portions, being attached to said chair frame by mounting on said front and back frame joints, wherein said two support portions of said two side supporting arms are extended along said two side portions of said seat fabric respectively to substantially support said seat fabric between said two side supporting arms.
Dependencies are inferred from the claim text.