Seat adjustment module, seat frame, and seat

A seat frame assembly, comprising:

• a frame and a seat adjustment module, wherein the seat adjustment module is arranged on the frame;
• wherein
• the seat adjustment module comprises:
• a base;
• a stop block, slidably connected to the base, and configured to stop forward and backward movements of a seating member in a seat;
• a rotary block, rotatably connected to the base, and configured to, in response to being rotated along a first rotation direction, drive the stop block to slide by a transmission member to release restrictions applied by the stop block on the forward and backward movements of the seating member, wherein the rotary block is further configured to, in response to being rotated along a second rotation direction, pull a first transmission rope to move to open a backrest adjustment switch in the seat, the second rotation direction being opposite to the first rotation direction;
• a handle, rotatably connected to one end of the rotary block, and configured to, in response to being rotated with respect to the rotary block, pull a second transmission rope to move to open a lifter switch of the seat;
• and
• a twistable adjustment member, rotatably connected to the base, and configured to be connected to a backrest elastic force adjustment mechanism by a flexible transmission member, wherein the twistable adjustment member is configured to, in response to being rotated, adjust a magnitude of an elastic force of a backrest in the seat by the flexible transmission member.