Abstract: A desk includes a desk top, a plurality of legs, a plurality of stretchers, and a coupling unit including a plurality of first and second linkages. Each of the first linkages includes a cylindrical part formed with a plurality of alternately disposed first engaging grooves and engaging ridges. Each of the engaging ridges is defined by a ridge-confining wall that has a C-shaped cross-section. Each of the second linkages is in the form of a clamp that has two opposing clamp arms. The clamp arms have two opposing curved ends which are inserted into two adjacent ones of the first engaging grooves, and which have inner faces substantially conform to and abut tightly against the ridge-confining wall of a respective one of the engaging ridges so as to secure the stretchers to the legs.

Abstract: A desk includes a desk top, a plurality of legs, a plurality of stretchers, and a coupling unit including a plurality of first and second linkages. Each of the first linkages includes a cylindrical part formed with a plurality of alternately disposed first engaging grooves and engaging ridges. Each of the engaging ridges is defined by a ridge-confining wall that has a C-shaped cross-section. Each of the second linkages is in the form of a clamp that has two opposing clamp arms. The clamp arms have two opposing curved ends which are inserted into two adjacent ones of the first engaging grooves, and which have inner faces substantially conform to and abut tightly against the ridge-confining wall of a respective one of the engaging ridges so as to secure the stretchers to the legs.