The present disclosure relates to a mechanical stretching device for a movable seat unit, and a movable seat unit thereof. The mechanical stretching device includes: a linkage support that comprises a support structure configured to support the mechanical stretching device on ground and a linkage structure attachable to a seating portion of the seat unit; a back mechanism that is pivotally connected to the linkage support and is configured to attach to a backrest of the seat unit; and a leg stretching structure including a footrest element, and the leg stretching structure is pivotally connected to the linkage support, and the footrest element is attached to a footrest of the seat unit. The mechanical stretching device is configured to implement a sequential conversion or a reverse sequential conversion of the seat unit from a sitting state to a relaxing state and to a lying state.

An extendable seating interconnected mechanism and a seating supporting frame, including an interconnected assembly, a seating frame, and a backrest mount, wherein the backrest mount is rotatably connected to the interconnected assembly and the seating frame, respectively; the interconnected assembly includes a mounting plate and a driving link, wherein the mounting plate includes a lateral-plate part and a supporting part; the driving link is rotatably connected between the seating frame and the lateral-plate part; an end of the supporting part is connected to the lateral-plate part; and an opposite end of the supporting part is rotatably connected to the backrest mount. The interconnected mechanism and the seating supporting frame optimize and simplify the structure, leading to a compression of the height of the seating supporting frame; different seating positions may be adjusted smoother by connecting the extendable and retractable footrest mechanism and interconnected assembly, which improves the seating comfort.

A stretching device for a leisure chair includes a base. Stretching assemblies are symmetrically and pivotally connected to two sides of the base. The stretching assembly includes a seat plate mechanism. The front part of the seat plate mechanism is pivotally connected to a leg mechanism. The rear part of the seat plate mechanism is pivotally connected to a backrest mechanism. A drive mechanism is provided between the stretching assemblies. The drive mechanism includes a front drive rod and a rear drive rod. The front drive rod and the rear drive rod drive the stretching assemblies to unfold or fold by a reciprocating motion device. Two ends of the front drive rod are fixedly connected to the leg mechanism. Two ends of the rear drive rod are pivotally connected to a first drive member. The middle part of the first drive member is pivotally connected to a second drive member.

An interlockingly extending driving mechanism for an electric sofa, including a backrest adjusting assembly provided in a sofa seat frame. A footrest assembly is provided at one end, remote from the backrest, of the backrest adjusting assembly, and the backrest adjusting assembly is connected with the footrest adjusting assembly. The footrest adjusting assembly includes a supporting rod which is vertically and fixedly provided on the surface of one side of the backrest adjusting assembly, a driving unit is provided on the supporting rod, the driving unit is drivingly connected with a transmitting screw, an interlocking unit is movably connected to one end, close to the footrest, of the transmitting screw, the interlocking unit is movably connected with the footrest, and when the transmitting screw drives the interlocking unit to move, the interlocking unit drives the footrest assembly to extend or fold.

An interlockingly extending driving mechanism for an electric sofa, including a backrest adjusting assembly provided in a sofa seat frame. A footrest assembly is provided at one end, remote from the backrest, of the backrest adjusting assembly, and the backrest adjusting assembly is connected with the footrest adjusting assembly. The footrest adjusting assembly includes a supporting rod which is vertically and fixedly provided on the surface of one side of the backrest adjusting assembly, a driving unit is provided on the supporting rod, the driving unit is drivingly connected with a transmitting screw, an interlocking unit is movably connected to one end, close to the footrest, of the transmitting screw, the interlocking unit is movably connected with the footrest, and when the transmitting screw drives the interlocking unit to move, the interlocking unit drives the footrest assembly to extend or fold.

The present disclosure provides a movable chair support structure including a movable mechanism, a fixing support structure and a chair support structure. The movable mechanism includes a transmission component and a movable component. The chair support structure includes a chair support portion, which has a length of 500 mm to 530 mm. When the movable chair support structure is disposed on the ground, the chair support portion is inclined relative to a direction parallel to the ground. The chair support portion is pivotally connected to the movable component. The movable component is pivotally connected to the fixing support structure. The transmission component is independently pivotally connected to the chair support portion and the movable component, respectively. The transmission component rotates relative to the chair support structure and drives the movable component to move, so as to adjust a position of the chair support structure relative to the fixing support structure.

A motor vehicle seat with a lying function has a seat cushion, a backrest which is arranged on a first end region of the seat cushion, and a calf support which can be elongated and which is arranged on a second end region of the seat cushion. The calf support is provided with a lifting device for lifting two outer support panels out of a rest position and into a support position which protrudes beyond a support surface of the calf support.

A remotely controlled powered chair may include a support frame, a seat pivotally mounted on the support frame, an rotary actuator mounted between the support frame and the seat to drive the seat to move relative to the support frame, a backrest pivotally mounted on the seat, and a linear actuator mounted between the seat and the backrest to drive the backrest to move relative to the seat. Thus, the rotary actuator may be controlled by an electrically control device to drive the seat to pivot relative to the support frame reciprocally in a pendulum manner so that the seat is pivoted relative to the support frame automatically. In addition, the linear actuator may be controlled by the electrically control device to adjust the inclined angle of the backrest so as to provide a comfortable sensation to the user. A remotely controlled powered chair may include a base assembly. A chair frame is supported on the base assembly. An actuator mechanism may communicate with the base assembly and the chair frame, and is operable to actuate the chair frame between first and second positions.

An item of seating furniture includes a chassis, a seat part having a pivotable inclination, a back part pivotable relative to the seat part, and a foot part, which is connected to the seat part via a foot-part adjustment mechanism and can be pivoted out. To adjust the item of seating furniture from an upright sitting position into a lying position, the seat part is moved forward relative to the chassis. In the sitting position, the foot part is pivoted in, substantially underneath the seat part. In the lying position, the foot part is pivoted out, in front of the seat part, such that the seat part is extended by the foot part. When being pivoted into a lying position, the back part moves forward, together with the seat part, relative to the chassis, and therefore, in any pivoted position, the back part does not project, or only insignificantly projects, beyond the rear edge of the item of seating furniture.

An item of seating furniture includes a chassis, a seat part having a pivotable inclination, a back part pivotable relative to the seat part, and a foot part, which is connected to the seat part via a foot-part adjustment mechanism and can be pivoted out. To adjust the item of seating furniture from an upright sitting position into a lying position, the seat part is moved forward relative to the chassis. In the sitting position, the foot part is pivoted in, substantially underneath the seat part. In the lying position, the foot part is pivoted out, in front of the seat part, such that the seat part is extended by the foot part. When being pivoted into a lying position, the back part moves forward, together with the seat part, relative to the chassis, and therefore, in any pivoted position, the back part does not project, or only insignificantly projects, beyond the rear edge of the item of seating furniture.