Sofa`s backrest swiveling device for forming bedding surface, has part that acts as rear leg assembly of sofa base and as backrest support, where part swivels on axle to form bedding surface with base, when axle rotates

摘要

The device has a part (A) that acts as a rear leg assembly of a base of a sofa and as a backrest support. The part (A) is fixed on a base structure (B) through an axle (AB5) situated under the base. The part (A) swivels on the axle, when the axle rotates to form a bedding surface with a base. The base and the backrest are joined edge to edge for forming the bedding surface in a bed mode.