A mechanical extension device of a swinging seat is provided, which includes a base, a first swinging rod, a second swinging rod, an actuator and two mechanical extension units, where the base is connected to the first swinging rod and the second swinging rod in a rotating way; the actuator is arranged between the two mechanical extension units; a locking device is arranged on a second connecting rod connected to the second swinging rod in the mechanical extension unit in a rotating mode, a guide groove and a locking groove formed in the guide groove are formed in the base, the guide groove is opened towards one side, the locking device can enter the guide groove from the opened position of the guide groove, and when the locking device swings and moves the mechanical extension unit, the locking device can enter the locking groove and swing relative to the base.

A mechanical extension device of a swinging seat is provided, which includes a base, a first swinging rod, a second swinging rod, an actuator and two mechanical extension units, where the base is connected to the first swinging rod and the second swinging rod in a rotating way; the actuator is arranged between the two mechanical extension units; a locking device is arranged on a second connecting rod connected to the second swinging rod in the mechanical extension unit in a rotating mode, a guide groove and a locking groove formed in the guide groove are formed in the base, the guide groove is opened towards one side, the locking device can enter the guide groove from the opened position of the guide groove, and when the locking device swings and moves the mechanical extension unit, the locking device can enter the locking groove and swing relative to the base.

A folding rocking chair frame and a folding rocking chair are provided. The folding rocking chair frame includes: an upper support assembly, including an upper cover, an upper base, and a plurality of upper connecting rods, one end of each of the plurality of upper connecting rods being connected to the upper cover and rotatable relative to the upper cover, the upper cover being swingable back and forth relative to the upper base between a horizontal position and a lower swing position; a lower support assembly, including a lower base and a plurality of lower connecting rods, one end of each of the plurality of lower connecting rods being connected to the lower base and rotatable relative to the lower base, the upper base being connected to the lower base; a locking device configured to connect the upper cover to the upper base in a locked state.

A folding rocking chair frame and a folding rocking chair are provided. The folding rocking chair frame includes: an upper support assembly, including an upper cover, an upper base, and a plurality of upper connecting rods, one end of each of the plurality of upper connecting rods being connected to the upper cover and rotatable relative to the upper cover, the upper cover being swingable back and forth relative to the upper base between a horizontal position and a lower swing position; a lower support assembly, including a lower base and a plurality of lower connecting rods, one end of each of the plurality of lower connecting rods being connected to the lower base and rotatable relative to the lower base, the upper base being connected to the lower base; a locking device configured to connect the upper cover to the upper base in a locked state.

A seat, such as a chair or stool, is disclosed and comprises a frame including at least one leg, an undercarriage which is configured to receive the leg, and a seat pan. The seat pan is rotatably mounted to the undercarriage, wherein the seat pan is rotatable about an axis of rotation relative to the undercarriage. The undercarriage also includes a recess and a resilient component in the recess, while the seat pan includes a stop located on a bottom surface of the seat pan. On rotation of the seat pan relative to the undercarriage, such as may occur when the person seated leans forward or back, the resilient component is compressed between the undercarriage and the stop. In one embodiment, an axle passes through the axis of rotation and connects the legs, and potentially backrest if present, to the undercarriage.

A seat, such as a chair or stool, is disclosed and comprises a frame including at least one leg, an undercarriage which is configured to receive the leg, and a seat pan. The seat pan is rotatably mounted to the undercarriage, wherein the seat pan is rotatable about an axis of rotation relative to the undercarriage. The undercarriage also includes a recess and a resilient component in the recess, while the seat pan includes a stop located on a bottom surface of the seat pan. On rotation of the seat pan relative to the undercarriage, such as may occur when the person seated leans forward or back, the resilient component is compressed between the undercarriage and the stop. In one embodiment, an axle passes through the axis of rotation and connects the legs, and potentially backrest if present, to the undercarriage.

A mechanism for a seating unit is provided that allows a reclining mechanism to freely rock on a rocker assembly when a locking actuator is in a first position, and that provides an auto-rocking motion, via a rocking actuator, when the locking actuator is in a second position.

A mechanism for a seating unit is provided that allows a reclining mechanism to freely rock on a rocker assembly when a locking actuator is in a first position, and that provides an auto-rocking motion, via a rocking actuator, when the locking actuator is in a second position.