Sofa

A sofa, comprising:

• a bottom box;
• two wing-type armrests;
• a backrest;
• two seat cushions;
• and
• two backrest cushions;
• wherein the two wing-type armrests expand outward and are symmetrically connected to two side walls of the bottom box respectively;
• wherein the backrest is connected to the two wing-type armrests;
• wherein the two seat cushions are disposed on the bottom box;
• wherein the two backrest cushions abut against the backrest, and bottom sides of the two backrest cushions abut against upper surfaces of the two seat cushions;
• wherein each of the two wing-type armrests comprises two first clamping plates that are fixedly connected to an inner side of the wing-type armrest facing towards the bottom box and are respectively disposed on a front end and a rear end of a lower portion of the wing-type armrest;
• wherein each of the two side walls of the bottom box comprises two second clamping plates that are fixedly connected to the side wall of the bottom box are respectively disposed on a front end and a rear end of the side wall, wherein the two second clamping plates are respectively clamped to the two first clamping plates;
• wherein there is defined a plurality of first clamping holes in each of the two first clamping plates, and there is defined a plurality of second clamping holes in each of the two second clamping plates, wherein the plurality of first clamping holes and the plurality of second clamping holes are equal in size;
• wherein the plurality of first clamping holes comprise a total of four groups of first clamping holes, with each group being disposed on the respective first clamping plate, and the four groups of first clamping holes are symmetrically distributed on the two first clamping plates;
• wherein the plurality of second clamping holes comprise four groups of second clamping holes, with each group being disposed on the respective second clamping plate, and the four groups of second clamping holes are symmetrically distributed on the two second clamping plates;
• wherein there is further disposed a third clamping plate that is fixedly connected to each of the two wing-type armrests, wherein there is further disposed a fourth clamping plate that is fixedly connected to each of two sides of the backrest, and wherein the two third clamping plates are respectively connected to the two fourth clamping plates;
• wherein there is defined a plurality of third clamping holes in each third clamping plate, and there is further defined a plurality of fourth clamping holes in each fourth clamping plates, and wherein the plurality of third clamping holes and the plurality of fourth clamping holes are equal in size;
• wherein the plurality of third clamping holes comprise four groups of third clamping holes that are symmetrically distributed on the third clamping plates, and wherein the plurality of fourth clamping holes comprise four groups of fourth clamping holes that are symmetrically distributed on the fourth clamping plates;
• wherein the sofa is assembled using a plurality of bidirectional clamping rods, wherein a first end of each of the plurality of bidirectional clamping rods is inserted into the respective first clamping hole or the respective third clamping hole in each of the two wing-type armrests, and a second end of each of the plurality of bidirectional clamping rods is aligned with respective second clamping hole or the respective fourth clamping hole, and wherein after alignment, each of the two wing-type armrests is pushed towards the backrest and the bottom box allowing each of the plurality of bidirectional clamping rods to be inserted into the respective second clamping hole or the respective fourth clamping hole, thereby achieving fixation of each of the two wing-type armrests.