Abstract: Disclosed are a motor driving structure and a motor driving device. The motor driving structure includes a driving mechanism, wherein the driving mechanism includes a lead screw, a nut, a push rod, and a capping head; the lead screw is used to be drivingly connected with an output end of a motor; the nut is threaded to the lead screw and used for connecting the lead screw with the push rod; the push rod is positioned between the nut and the capping head; the push rod is integrally formed with the nut and/or the capping head; the push rod is made of a plastic material; and the nut integrated with the push rod and/or the capping head integrated with the push rod are/is made of a plastic material.

Abstract: A linkage device for implementing no backrest clearance, a supporting frame, a seat unit, and a seat, including a bottom base, a linkage mechanism, a support side plate, and a backrest mechanism; the support side plate is provided with a side plate linkage point and a backrest point; the support side plate is rotatably connected to the linkage mechanism at the side plate linkage point; the support side plate is rotatably connected to the backrest mechanism at the backrest point; the backrest mechanism includes a backrest mounting member and a backrest linkage member; and when the backrest mechanism is retracted to an ultimate position, an included angle ? between a connecting line between two ends of the backrest mounting member and a connecting line between the backrest point and the side plate linkage point is an acute angle.

Abstract: A footrest extension mechanism, including a first link, a second link, a third link, a fourth link, a first footrest member, a driven rod, a second footrest member, and a footrest connecting member; an end of the second link is hinged to the first footrest member, and an opposite end of the second link is hinged to the first link, in which the first link is used to be hinged to a linkage support of a seat; and an end of the fourth link is hinged to the second footrest member, an opposite end of the fourth link is hinged to the third link, an end of the driven rod is hinged to the first footrest member, and an opposite end of the driven rod is hinged to a middle of the fourth link. The adjustment flexibility and the extending length of the footrest extension mechanism are increased.

Abstract: An electromechanical stretching apparatus of a convertible sofa consisting of a mechanical stretching apparatus and an electric actuator, the mechanical stretching apparatus provided with an electrically-driven connecting rod, where the electric actuator consists of a motor, a motor connecting tube, a motor movable slider, and a motor head fixing part, the motor adopted is a motor with a guide rail, the motor movable slider is installed on the guide rail of the motor, the motor head is rotationally connected through a second rotor shaft to the motor head fixing part fastened on the electrically-driven connecting rod, the motor connecting tube is connected to the motor movable slider through a first rotor shaft and the motor connecting tube is fastened on the mechanical stretching apparatus. The motor connecting tube is fastened on a linkage part of the mechanical stretching apparatus. The first and second rotor shaft are both a bolt.

Abstract: The present disclosure relates to a movable seat with a mechanical stretching device. The movable seat includes a frame assembly connected to the mechanical stretching device and the frame assembly includes a seat frame configured to support a seating portion of the movable seat, an armrest frame fixedly connected to the seat frame, and a backrest frame configured to support a backrest of the movable seat, where the backrest frame includes a lower frame section and an upper frame section, the upper frame section transitions to the lower section via a stepped portion, and a rear part of the armrest frame includes a curved extending section, and a gap is formed between the armrest frame and the upper frame section.

Abstract: The invention discloses a sofa seat frame, a sofa base assembly, a sofa and a sofa production and assembly process, the sofa seat frame comprises two cross beams arranged at intervals and two longitudinal beams connecting the two cross beams, wherein a plurality of supporting elastic pieces are arranged between the two cross beams; and each longitudinal beam comprises a first supporting plate for supporting a seat cushion and a first side plate arranged at one side of the lower part of the first supporting plate and used for being detachably connected with sofa fabric on the seat cushion. In the sofa seat frame provided by the invention, when the seat cushion is placed on the supporting elastic pieces, the first supporting plates can give a certain supporting force to the seat cushion, so as to improve the sitting comfort of users.

Abstract: Provided are a lower-back supporting apparatus, a backrest supporting frame, and a seating unit. The lower-back supporting apparatus includes a lower-back supporting plate; a lower mounting plate; two supporting structures, provided between the lower-back supporting plate and the lower mounting plate, hinged to the lower-back supporting plate and the lower mounting plate, respectively; and an extendable and retractable part, including an extendable and retractable end hinged to the lower-back supporting plate or the supporting structure, so as to drive the lower-back supporting plate away or close to the lower mounting plate. The lower-back supporting plate may be lifted and lowered by cooperating the extendable and retractable part with the supporting structure; the volume of lower-back supporting apparatus may be effectively reduced by adopting the extendable and retractable part; the whole of the extendable and retractable part is easy to maintain and replace.

Abstract: A seating device with a swinging device is provided. The seating device includes a seat base, a seat, an ottoman, a backrest, and two moving linkages configured to move the seating device from a first position to a second position. Moreover, the seating device includes a swinging device configured to couple between the seat base and the two moving linkages, and drive the two moving linkages to swing relative to the seat base along a front and rear direction. The swinging device includes a swinging actuator; and an eccentric transmitter is configured to transmit a swing actuation torque to the two moving linkages, where the eccentric transmitter includes a crank and a transmission arm, the crank is configured to couple with the swinging actuator, and the transmission arm is configured to couple with the two moving linkage via a universal joint device.

Abstract: 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.

Abstract: Provided are an extendable seat frame and a furniture thereof. The extendable seat frame includes: a fixed base; a seat frame main body, configured to move relatively above the fixed base; and an extension apparatus, configured to be rotatably connected to the fixed base and rotatably connected to the seat frame main body so as to enable the extendable seat frame to switch between a retracted state and an extended state. Further, the extension apparatus includes at least an extension part, one end of the extension part is rotatably connected to an end of the seat frame main body that is away from an extending direction, and the extension part is configured to drive the extension part to flip in response to the seat frame main body moving towards the extending direction.

Abstract: Provided is a seating device including an armrest, a seat, a backrest, an ottoman, and a mechanical extension device including a seat frame attached to the seat, a backrest assembly including a backrest bracket; a leg extension device. The mechanical extension device is configured to move the seating device from a first position to a second position. The backrest assembly includes a backrest bracket, a first backrest link, and a second backrest link, the backrest bracket is configured to attach the backrest, the first backrest link is pivotally connected to a front end of the backrest bracket at a first pivot point, the first backrest link is pivotally connected to the seat frame at a second pivot point, and the first pivot point has a trajectory that moves towards the leg extension device in the process of moving the seating device from the sitting position to the reclining position.

Abstract: The present disclosure relates to a mechanical extension apparatus for an extendable chair unit and a chair unit including such mechanical extension apparatus. The mechanical extension apparatus includes: a reclining apparatus that include multiple links attached to the seat, the backrest and the footrest of the extendable seat, and such reclining apparatus is configured to convert the extendable seat between a sitting position and a lying position. The mechanical extension apparatus also includes an actuator that is attached to the reclining apparatus, and the actuator is configured to electronically convert the extendable seat between the sitting position and the lying position.

Abstract: 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.

Abstract: The invention is an electromechanical stretching apparatus of a convertible sofa, which consisting of a mechanical stretching apparatus and an electric actuator, the mechanical stretching apparatus being provided with an electrically-driven connecting rod, wherein, the electric actuator consists of a motor, a motor connecting tube, a motor movable slider, and a motor head fixing part, the motor adopted is a motor with a guide rail, the motor movable slider is installed on the guide rail of the motor, the motor head is rotationally connected through a second rotor shaft to the motor head fixing part fastened on the electrically-driven connecting rod, the motor connecting tube is connected to the motor movable slider through a first rotor shaft and the motor connecting tube is fastened on the mechanical stretching apparatus. The said motor connecting tube is fastened on a linkage part of the mechanical stretching apparatus. The said first rotor shaft and the second rotor shaft are both a bolt.