Chair with controllable wheel assembly

Abstract

A chair with a controllable wheel assembly comprises a chair body having a bottom plate; the chair body being formed with a plurality of openings; a plurality of buckling seats having an approximate U shape with two post; each post of the buckling seat being installed with a guide groove; a side of the buckling seat being formed with a plurality of hooks; between each buckling seat and the bottom plate being formed with a through hole; a plurality of wheel sets being included; and two sides of the movable block having respective sliding grooves; each sliding groove having a plurality of notches for receiving the hooks of the buckling seat so that the movable block is movably combined to the chair body; and thus the movable block is slideable along the guide groove.

What is claimed is: 
     
         1 . A chair with a controllable wheel assembly, comprising:
 a chair body having a bottom plate; the chair body being formed with a plurality of openings;   a plurality of buckling seats having an approximate U shape with two post; each post of the buckling seat being installed with a guide groove; a side of the buckling seat being formed with a plurality of hooks; between each buckling seat and the bottom plate being formed with a through hole;   a plurality of wheel sets being included; each wheel set having a corresponding buckling seat; each wheel set having an elastic element and a wheel body; the elastic element having a U shape; one end of the elastic element being connected to the wheel body and another end thereof passing through a corresponding through hole so that the elastic element is connected to the chair body; and   two sides of the movable block having respective sliding grooves; each sliding groove having a plurality of notches for receiving the hooks of the buckling seat so that the movable block is movably combined to the chair body; thus the movable block is slideable along the guide groove; a stop block being installed at a lower side of the movable block; a rear side of the movable block having a push button; the push button being received in one of the opening of the chair body.   
     
     
         2 . The chair with a controllable wheel assembly as claimed in  claim 1 , wherein a bottom of each through hole has at least one recess. 
     
     
         3 . The chair with a controllable wheel assembly as claimed in  claim 1 , wherein the elastic element has a U shape. 
     
     
         4 . The chair with a controllable wheel assembly as claimed in  claim 3 , wherein the elastic element has at least one protrusion; when the elastic element passes through the through hole, the two protrusions are received in the recesses. 
     
     
         5 . The chair with a controllable wheel assembly as claimed in  claim 3 , wherein the end of the elastic element is screwed to the wheel body. 
     
     
         6 . The chair with a controllable wheel assembly as claimed in  claim 1 , wherein the movable block has a U shape and each side of the movable block has one of the two sliding grooves; and a lower side is protruded with the stop block. 
     
     
         7 . The chair with a controllable wheel assembly as claimed in  claim 6 , wherein the push button is installed with at least on rib and an edge of the opening is formed with at least one trench; when the rib is buckled in the trench, the push button is damped and is positioned in the opening. 
     
     
         8 . The chair with a controllable wheel assembly as claimed in  claim 1 , wherein pushing the push button toward an interior of the opening, the rib is buckled to the trench of the opening so that the movement of the movable block is damped and positioned to a predetermined position so as to control the movement of the wheel set. 
     
     
         9 . The chair with a controllable wheel assembly as claimed in  claim 1 , wherein when the top seat is below the bottom seat, the top seat is formed with a receiving space for receiving other objects. 
     
     
         10 . The chair with a controllable wheel assembly as claimed in  claim 9 , wherein the chair body has a round tapered shape or polygonal shape.