Vehicle-mounted bicycle stand

A vehicle-mounted bicycle stand, comprising:

• a mounting seat (1) connected with a square-opening base at a rear end of a vehicle, wherein a connecting part is arranged at an end of the mounting seat (1);
• a support rod fixed on the mounting seat (1);
• a bracket (5) rotationally mounted at an upper end of the support rod and configured to place a bicycle;
• and
• a locking and fixing mechanism mounted between the support rod and the bracket (5) and configured to lock and fix the bracket (5) in a rearward unfolded state or a downward folded state;
• wherein the locking and fixing mechanism comprises a main shaft, a shift block (42) and a slide block (44);
• the main shaft is rotationally mounted at the upper end of the support rod, the main shaft is rigidly connected with a limiting plate (43), two ends of the main shaft are bent to the same side to form the bracket (5), and an end of the limiting plate (43) is provided with a clamping slot (430) with an opening facing away from the main shaft;
• the shift block (42) is rotationally mounted on a top of the support rod, the shift block (42) is connected with the slide block (44) in vertical slide fit with a lower end of the main shaft, and the slide block (44) can be driven to slide up and down through the rotation of the shift block (42);
• when the limiting plate (43) is rotated to a lower limit position, a clamping block (441) arranged on the slide block (44) can be clamped in the clamping slot (430) to realize the locking of the bracket in an unfolded state;
• and the locking and fixing mechanism is provided with a first elastic component for enabling the shift block (42) to have a trend of rotating rearward and driving the slide block (44) to move upward, or enabling the slide block (44) to have a trend of moving upward and driving the shift block (42) to rotate rearward.