Assembly of mesh cushion in a mesh chair and assembling method thereof

An assembly of a mesh cushion in a mesh chair, comprising:

• a mesh member;
• a middle member having a closed loop shape, the middle member surrounding and fixing the edge of the mesh member;
• a cover to which the middle member is fixed;
• a frame which is assembled with the cover by a coupling unit while the middle member is interposed between the cover and the frame, wherein the coupling unit includes a bolt which penetrates the frame and the middle member and is inserted into the cover;
• and
• a tension part disposed between the frame and the cover,
• wherein the tension part comprises:
• a groove portion that is formed on the cover facing the frame, wherein the groove portion is opened toward a center of the cover so as to become a part of an interior circumference of the cover;
• and
• a projection portion that is formed on the frame facing the cover, wherein a top end of the projection portion upwardly pushes and supports a portion of the mesh member so that the mesh member is directly suspended on the projection portion with tight tension when the projection portion is inserted in the groove portion while the frame and the cover are assembled with each other.