Abstract: A mechanical stretching device includes first, second, third and fourth foot levers, a side plate, first, second, third, fourth, fifth and sixth connecting rods, a first support member, a second support member, a linkage member, a connecting member, a rotating shaft transmission member, a spring, and a bottom connecting rod. A first limiting surface and a second limiting surface are disposed on the second foot lever, a third limiting surface is disposed on the fourth foot lever, a fourth limiting surface and a fifth limiting surface are disposed on the side plate, a sixth limiting surface and a seventh limiting surface are disposed on the second connecting rod, an eighth limiting surface is disposed on the sixth connecting rod, a ninth limiting surface is disposed on the first support member, and a tenth limiting surface is disposed on the linkage member.

Abstract: The invention relates to a mechanical stretching device for a multifunctional convertible sofa, which is mainly applied to a convertible sofa, and is a furniture component. The mechanical stretching device includes a first foot lever, a second foot lever, a third foot lever, a fourth foot lever, a side plate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a first support member, a second support member, a linkage member, a seahorse member, a rotating shaft transmission member, a spring, and a bottom connecting rod.

Abstract: A drive for adjusting parts of seating and reclining furniture is provided, which includes: an electric motor, disposed within a motor cover of a cabinet and engaged with a gear connected to a lead screw via one end of a drive shaft of the electric motor, and a slider, for moving rectilinearly back and forth in cooperation with the lead screw. The slider is provided with a drive nut therein, which is screwed onto the lead screw to enable the slider to move rectilinearly. One or more positioning grooves are disposed on the slider in parallel with the nut. Guide rails are correspondingly disposed in the positioning grooves. One end of each guide rail is fixed to the cabinet and the other end of each guide rail is fixed to a top stopper. Therefore, a better adjustability is achieved within a limited inner space of the furniture.