Vehicle-mounted detachable lumbar support pillow structure capable of being adjusted upwards and downwards

A vehicle-mounted detachable lumbar support pillow structure capable of being adjusted upwards and downwards, comprising:

• a car seat backrest, a sliding assembly, a connecting member and a car seat cushion, wherein the sliding assembly is embedded and mounted in the car seat backrest, the car seat cushion is mounted in front of the car seat backrest, and the connecting member is disposed between the sliding assembly and the car seat cushion;
• one end of the connecting member is fixedly connected to the car seat cushion, and the other end of the connecting member is detachably connected to the sliding assembly;
• the car seat cushion is slidably connected to the car seat backrest upwards and downwards through the sliding assembly;
• and
• the sliding assembly comprises a casing and a matched decorative cover, a sliding groove with a certain length is vertically formed on the casing, serrations are formed on two opposite side walls of the sliding groove, and a length of the sliding groove is a stroke length of the car seat cushion that can be adjusted by sliding upwards and downwards;
• wherein the connecting member comprises a docking stand and a fixed base, a turntable is disposed on one side of the docking stand, and the docking stand is rotationally connected to the fixed base through the turntable;
• and
• a plurality of sets of cambered grooves are formed inside the fixed base and on an inner wall opposite to the turntable, spherical columns and second springs are embedded and mounted at positions in a horizontal direction of the docking stand corresponding to the cambered grooves, and the second springs are located behind the spherical columns;
• and when the spherical columns are snapped into the cambered grooves on the fixed base, a rotational position of the docking stand is locked.