Detachable chair base

Abstract

The disclosure relates to the technical field of chair bases and particularly relates to a detachable chair base. The detachable chair base includes a chair underframe. A first supporting mechanism and a second supporting mechanism are connected to a surface of the chair underframe and a connecting mechanism is mounted above the first supporting mechanism and the second supporting mechanism through a mounting seat. The mounting seat includes a lower connecting plate. According to the disclosure, a first support leg and a second support leg are clamped with each other, so that the first support leg and the second support leg are connected and fixed to the chair underframe through a first screw and a second screw. The chair underframe is fixed and mounted through a plurality of groups of screws, so that the transportation of the chair underframe in parts is facilitated, and the transportation cost is lowered.

What is claimed is: 
     
         1 . A detachable chair base, comprising a chair underframe, wherein a first supporting mechanism and a second supporting mechanism clamped in a cross manner are connected to a surface of the chair underframe and a connecting mechanism is mounted above the first supporting mechanism and the second supporting mechanism through a mounting seat; the mounting seat comprises a lower connecting plate, an upper connecting plate is mounted at four corners of the lower connecting plate in an abutted manner through long rod bolts, an abutting mechanism is arranged at a central position of a top end of the upper connecting plate, the abutting mechanism comprises a supporting column connected and fixed to the upper connecting plate, an insert shaft is inserted at a top end of the supporting column through a polygonal slot, a movable frame is connected to a top end of the insert shaft, a fixed plate is rotatably mounted at a top end of the movable frame, a chair frame is mounted at a top end of the fixed plate, the chair frame comprises a chair seat, a bottom end of a sitting surface of the chair seat is abutted and fixed to the fixed plate through a bolt, two inner plates are symmetrically connected to a right side of a bottom end of the chair seat, a magic tape is arranged on the surface of each of the inner plates, the magic tape is adhered to a cloth curtain, and a top end of the cloth curtain is sutured and abutted to a side of the bottom end of the chair seat through a needle and a thread. 
     
     
         2 . The detachable chair base according to  claim 1 , wherein the first supporting mechanism comprises a first support leg, both ends of the first support leg are fixed to the surface of the chair underframe through first screws, the second supporting mechanism comprises a second support leg, a tail end of the second support leg is fixed to the surface of the chair underframe through a second screw, the second support leg is buckled to a surface of a top end of the first support leg, and mounting holes matching with the long rod bolts are formed in surfaces of the first support leg and the second support leg. 
     
     
         3 . The detachable chair base according to  claim 2 , wherein a positioning bolt is inserted into a crossover position between the first support leg and the second support leg by penetrating a through hole, a shaft end of the positioning bolt is inserted into the lower connecting plate through a thread, a base plate sleeves outside the shaft end of the positioning bolt, and the base plate is abutted and buckled to bottom ends of the first support leg and the second support leg. 
     
     
         4 . The detachable chair base according to  claim 2 , wherein the cross-section of the chair underframe is annular, a plurality of groups of screw holes are equidistantly formed in a surface of a bottom end of the chair underframe, both ends of the first support leg and the second support leg are arc-shaped, with radians being the same as a surface radian of the chair underframe. 
     
     
         5 . The detachable chair base according to  claim 1 , wherein the connecting mechanism comprises a connecting crossbar, mounting holes matching with the long rod bolts are formed in a surface of the connecting crossbar, and transverse brace rods are mounted in an abutting manner on both sides of the connecting crossbar through fixed bolts. 
     
     
         6 . The detachable chair base according to  claim 5 , wherein top ends of sides of the two transverse brace rods are connected and fixed through an auxiliary supporting frame bar, the auxiliary supporting frame bar is located at a bottom end of the sitting surface of the chair seat, and limit spacing is arranged between the auxiliary supporting frame bar and the bottom end of the sitting surface of the chair seat. 
     
     
         7 . The detachable chair base according to  claim 1 , wherein the supporting column and a side of the insert shaft are abutted and fixed through a locking accessory, the locking accessory comprises a bayonet lock, the bayonet lock penetrates through the supporting column and is then inserted into the slot of the insert shaft, the bayonet lock is of a U-shaped structure, a rubber gasket is mounted in an embedded manner on a side of a transverse plate end of the bayonet lock through a groove, and the rubber gasket is abutted and adhered to an inner wall of the slot of the insert shaft. 
     
     
         8 . The detachable chair base according to  claim 7 , wherein a thread rotary knob is rotatably mounted at a central position of a right side of the bayonet lock through a rotation hole, a shaft end of the thread rotary knob is inserted into the supporting column through a threaded hole, and a gasket sleeves outside the shaft end of the thread rotary knob. 
     
     
         9 . The detachable chair base according to  claim 1 , wherein two buffer mechanisms are symmetrically arranged on left and right sides of the supporting column, each of the buffer mechanisms comprises a clamping block, the clamping block is inserted into a side of the supporting column through a limiting groove, a side plate is connected outside the clamping block, a vertical plate is connected outside the side plate, two buffer springs are connected to a side of the vertical plate, a page plate is connected to a tail end of each of the buffer springs, the page plate is fixed to the bottom end of the sitting surface of the chair seat, a third screw is inserted into a side of the side plate through a through hole, a shaft end of the third screw is inserted into the fixed block through a threaded hole, and the fixed block is connected and fixed to the supporting column.