Abstract: A chair comprises a base, a seat, a backrest, an operating unit, and a footrest. A first shaft is pivotably connected to a rear end of the seat. The operating unit includes a transmission member, a spring, and a first motor. An end of the transmission member is connected to the seat. An end of the spring is connected to another end of the transmission member. Another end of the spring is connected to the seat. The first motor has an end connected to the seat. The footrest is pivotably connected to a front end of the seat and incudes a second shaft interlocked with the transmission member. The first motor is operable in a direction to cause pivotal movement of the first shaft and to displace the transmission member to cause pivotal movement of the second shaft while stretching the spring, thereby moving the footrest to an extended position.

Abstract: A swingable chair chassis comprises a rocker seat including a chamber defined between a bottom wall and a peripheral wall. The bottom wall includes a slot extending in a front/rear direction. A lid is securely mounted to a bottom of the seat and the rocker seat. A supporting seat is disposed in the chamber of the rocker seat. The supporting seat includes a central portion having an insertion hole coupled with chair post. The supporting seat includes an arcuate supporting face formed on an upper side thereof and abutting against a lower face of the lid. A plurality of elastic elements is disposed between the bottom wall of the rocker seat and the supporting seat and provides movement elasticity when the rocker seat swings forward or rearward relative to the supporting seat. The supporting face abuts against the lower face of the lid during swinging movement of the rocker seat.

Abstract: A swingable chair chassis comprises a rocker seat including a chamber defined between a bottom wall and a peripheral wall. The bottom wall includes a slot extending in a front/rear direction. A lid is securely mounted to a bottom of the seat and the rocker seat. A supporting seat is disposed in the chamber of the rocker seat. The supporting seat includes a central portion having an insertion hole coupled with chair post. The supporting seat includes an arcuate supporting face formed on an upper side thereof and abutting against a lower face of the lid. A plurality of elastic elements is disposed between the bottom wall of the rocker seat and the supporting seat and provides movement elasticity when the rocker seat swings forward or rearward relative to the supporting seat. The supporting face abuts against the lower face of the lid during swinging movement of the rocker seat.

Abstract: A chair assembly includes a supporting frame disposed above a base and including a first guiding groove. A seat is pivotably connected to a backrest. Lower and front guiding wheels are mounted to rear and front ends of the seat, respectively. At least one operating board includes rear and front ends respectively having second and third guiding grooves. The lower guiding wheel is movably received in the first and second guiding grooves. The front guiding wheel is movably received in the third guiding groove. A first operating rod is pivotably connected between the supporting frame and the seat. When the operating rod retracts, the lower guiding wheel is located in rear ends of the first and second guiding grooves, and the front guiding wheel is located in a rear end of the third guiding groove. The seat moves downwards and rearwards, and the front end of the seat inclines upwards.

Abstract: A chair assembly includes a supporting frame disposed above a base and including a first guiding groove. A seat is pivotably connected to a backrest. Lower and front guiding wheels are mounted to rear and front ends of the seat, respectively. At least one operating board includes rear and front ends respectively having second and third guiding grooves. The lower guiding wheel is movably received in the first and second guiding grooves. The front guiding wheel is movably received in the third guiding groove. A first operating rod is pivotably connected between the supporting frame and the seat. When the operating rod retracts, the lower guiding wheel is located in rear ends of the first and second guiding grooves, and the front guiding wheel is located in a rear end of the third guiding groove. The seat moves downwards and rearwards, and the front end of the seat inclines upwards.

Abstract: A chair seat sliding and locking mechanism includes a positioning tube and a sliding seat. The positioning tube is mounted to a rod of a chair base. The positioning tube is rotatable relative to the rod but is not longitudinally slidable. The sliding seat includes a coupling portion securely coupled with a chair seat. The coupling portion includes a receiving portion having a receiving hole with a catching portion. The positioning tube is received in the receiving hole. When the positioning tube is rotated relative to the rod to a first position in which a positioning portion of the positioning tube disengages from the catching portion, the sliding seat is movable along the positioning tube. When the positioning tube is rotated relative to the rod to a second position in which the positioning portion engages with the catching portion, the sliding seat is fixed relative to the positioning tube.

Abstract: An electric-assisted leisure lifting recliner includes a back frame pivotably mounted to a seat frame unit. A footrest unit includes a connecting portion pivotably connected to a front end of the seat frame unit. First and second frames are pivotably connected to a base unit and the seat frame unit and are operable to move the seat frame unit vertically. A telescopic rod is pivotably connected to an actuating block and the connecting portion. An actuator pivotably connected to the actuating block can move the footrest unit to an extended state and to recline the back frame. When the connecting portion abuts against the seat frame unit, the telescopic rod can be shortened to independently recline the back frame. When a length of the actuator is shortened, the first and second frames and the seat frame unit are lifted, and a rear end of the seat frame rises.

Abstract: An electric-assisted leisure lifting recliner includes a back frame pivotably mounted to a seat frame unit. A footrest unit includes a connecting portion pivotably connected to a front end of the seat frame unit. First and second frames are pivotably connected to a base unit and the seat frame unit and are operable to move the seat frame unit vertically. A telescopic rod is pivotably connected to an actuating block and the connecting portion. An actuator pivotably connected to the actuating block can move the footrest unit to an extended state and to recline the back frame. When the connecting portion abuts against the seat frame unit, the telescopic rod can be shortened to independently recline the back frame. When a length of the actuator is shortened, the first and second frames and the seat frame unit are lifted, and a rear end of the seat frame rises.

Abstract: A chair includes a base having two sideboards. Each sideboard includes first and second coupling portions respectively at rear and front portions thereof. A seat is mounted on the base. A third coupling portion and a fourth coupling portion are provided on each lateral side of the seat. Each fourth coupling portion is coupled to one of the second coupling portions of the base. The seat is movable in a longitudinal direction and has a front end supported by the second and fourth coupling portions. A positioning device is coupled with the third coupling portion of the seat and the base, providing support for the rear end of the seat. The positioning device positions the seat relative to the base. A backrest is mounted to a rear of the base and is pivotably connected to the rear end of the seat and the sideboards.

Abstract: A leisure chair includes a seat movably mounted on top of a base. The seat includes a front rod extending between two lateral rods. A backrest is connected to the rear side of the seat. A footrest unit includes at least one first link and at least one second link. Forward movement of the seat causes the at least one first link and the at least one second link to pivot and causes the footrest unit to fold and move to the storage position below the seat. The at least one first link and the at least one second link form a folded part of the footrest unit. Rearward movement of the seat causes the at least one first link and the at least one second link to pivot and extend and causes the footrest to extend and move to the extended position in front of the seat.

Abstract: A leisure chair includes a backrest pivotably connected to a seat. A connection seat is mounted between a base and the seat and includes a lower coupling portion mounted to the base, an upper coupling portion mounted to the seat, and two pivotal rod units pivotably connected to two sides of the lower coupling portion, respectively. The upper coupling portion is pivotably connected to the pivotal rod units. When a control rod moves rearwards, a push portion on the control rod actuates a pull rod to control a pneumatic rod for adjusting a rearward inclination angle of the backrest. When the control rod moves forwards, a pressing portion of the control rod presses against two swaying rods to extend the legrest unit, and the center of gravity of the upper coupling portion can be located in front of the center of gravity of the base to provide enhanced lying stability.

Abstract: A leisure chair includes a backrest pivotably connected to a seat. A connection seat is mounted between a base and the seat and includes a lower coupling portion mounted to the base, an upper coupling portion mounted to the seat, and two pivotal rod units pivotably connected to two sides of the lower coupling portion, respectively. The upper coupling portion is pivotably connected to the pivotal rod units. When a control rod moves rearwards, a push portion on the control rod actuates a pull rod to control a pneumatic rod for adjusting a rearward inclination angle of the backrest. When the control rod moves forwards, a pressing portion of the control rod presses against two swaying rods to extend the legrest unit, and the center of gravity of the upper coupling portion can be located in front of the center of gravity of the base to provide enhanced lying stability.

Abstract: A chair includes a base having a guiding rod. A connecting frame is mounted to a backrest and is pivotably connected to the base. A seat includes a rear end pivotably connected to the connecting frame. An operative frame includes a rear end pivotably connected to the connecting frame. A sliding sleeve is mounted on a front end of the operative frame and is mounted around the guiding rod. At least one supporting plate includes a first end pivotably connected to the front end of the operative frame and a second end pivotably connected to a front end of the seat. When the backrest is moved backward, the connecting frame is actuated to move the operative frame and the seat forward, and the at least one supporting plate is moved to an extended position to move the front end of the seat upward.

Abstract: A chair includes a base having a guiding rod. A connecting frame is mounted to a backrest and is pivotably connected to the base. A seat includes a rear end pivotably connected to the connecting frame. An operative frame includes a rear end pivotably connected to the connecting frame. A sliding sleeve is mounted on a front end of the operative frame and is mounted around the guiding rod. At least one supporting plate includes a first end pivotably connected to the front end of the operative frame and a second end pivotably connected to a front end of the seat. When the backrest is moved backward, the connecting frame is actuated to move the operative frame and the seat forward, and the at least one supporting plate is moved to an extended position to move the front end of the seat upward.

Abstract: A leg rest assembly includes two connecting boards fixed to an underside of a seat of a chair. An actuation rod unit and a link unit are mounted to each connecting board. A rear end of each link unit is pivotably connected to one of the connecting boards and one of the actuation rod units. Each link unit has a slot aligned with a guiding groove of one of the connecting boards. A guiding rod extends through the slot of each link unit, the guiding groove of each connecting board, and each actuation rod unit. A mounting plate is pivotably connected to a front end of each link unit. An operative rod is operable to cause movement of the actuation rod units and to move the mounting plate between a first position in front of the base and a second position received in a compartment between the connecting boards.

Abstract: A leg rest assembly includes two connecting boards fixed to an underside of a seat of a chair. An actuation rod unit and a link unit are mounted to each connecting board. A rear end of each link unit is pivotably connected to one of the connecting boards and one of the actuation rod units. Each link unit has a slot aligned with a guiding groove of one of the connecting boards. A guiding rod extends through the slot of each link unit, the guiding groove of each connecting board, and each actuation rod unit. A mounting plate is pivotably connected to a front end of each link unit. An operative rod is operable to cause movement of the actuation rod units and to move the mounting plate between a first position in front of the base and a second position received in a compartment between the connecting boards.

Abstract: An angle adjusting/positioning device includes first and second sleeves fixed to a backrest and a seat of a chair. The first sleeve has a first axle hole and a first toothed portion. A second sleeve includes a second axle hole, a second toothed portion, and a positioning portion. A third sleeve has a third axle hole and an actuating portion. An axle extends through the first, second, and third axle holes. A handle fixed to the third sleeve is operable to move the actuating portion relative to the positioning portion, causing the second toothed portion to engage with or disengage from the first toothed portion. An angular position of the backrest relative to the seat is adjustable when the second toothed portion disengages from the first toothed portion. The angular position of the backrest is fixed when the second toothed portion engages with the first toothed portion.

Abstract: A leisure rocking chair includes a seat, a backrest, a fixed seat, a rocking base and a rocking mechanism. The fixed base includes a horizontal beam on an upper portion thereof. The rocking mechanism includes front and rear rocking rods and a connecting rod. The front and rear rocking rods, the horizontal beam, and the connecting rod are pivotably connected. A fixed support is mounted to the connecting rod. The rocking base is fixed to the fixed support. A positioning plate is mounted to the fixed base and includes a plurality of positioning holes. The rocking mechanism includes an adjusting seat adjacent to the positioning plate. An adjusting lever is mounted to the adjusting seat and includes a tail portion extendible into one of the plurality of positioning holes to fix the rocking mechanism. The adjusting lever includes a control arm on a head portion thereof.