Contractible Sofa Linkage Device, Sofa Support, and Sofa

A sofa support, comprising a linkage assembly, a seat frame mount, a leg assembly, and a backrest member, wherein the seat frame mount is hinged to a top of the linkage assembly, the leg assembly is hinged to a front end of the seat frame mount, and the backrest member is hinged to an end of the seat frame mount distal to the leg assembly;

• an inner side wall of the seat frame mount is provided with a mounting platform, wherein a height of the mounting platform is lower than an upper edge of the seat frame mount, and an oblique plane where the mounting platform is positioned is a seat frame mounting surface;
• the leg assembly comprises a footrest link assembly and a footrest member, wherein the footrest link assembly is hinged to the seat frame mount, the footrest member comprises a footrest plate mounting surface used to mount a footrest plate, and the footrest plate mounting surface is retracted below the seat frame mount when the footrest link assembly drives the footrest member to be retracted to a limit position;
• and
• a vertical distance H1 between a highest point where the seat frame mount is positioned on the seat frame mounting surface and a lowest point of the leg assembly is not greater than 170 mm when the sofa support is retracted to a limit position.

A sofa, comprising a seat support leg, an armrest frame and a sofa support;

• there are two sets of sofa supports disposed oppositely, the sofa support is connected to the armrest frame, the seat support leg is provided below the armrest frame, and a height of the seat support leg is 120-150 mm;
• the sofa support comprises a linkage assembly, a seat frame mount, a leg assembly, and a backrest member, wherein the seat frame mount is hinged to a top of the linkage assembly, the leg assembly is hinged to a front end of the seat frame mount, and the backrest member is hinged to an end of the seat frame mount distal to the leg assembly;
• an inner side wall of the seat frame mount is provided with a mounting platform, wherein a height of the mounting platform is lower than an upper edge of the seat frame mount, and an oblique plane where the mounting platform is positioned is a seat frame mounting surface;
• the leg assembly comprises a footrest link assembly and a footrest member, wherein the footrest link assembly is hinged to the seat frame mount, the footrest member comprises a footrest plate mounting surface used to mount a footrest plate, and the footrest plate mounting surface is retracted below the seat frame mount when the footrest link assembly drives the footrest member to be retracted to a limit position;
• and
• a vertical distance H1 between a highest point where the seat frame mount is positioned on the seat frame mounting surface and a lowest point of the leg assembly is not greater than 170 mm when the sofa support is retracted to a limit position.