FLAP OPENING AND CLOSING DEVICE, AND VEHICLE HAVING SAME

A cap opening and closing device (1) includes a mounting box (100); a locking pin, rotatably and retractably mounted to the mounting box (100); a guide block (400), mounted to the mounting box (100), and provided with a guide groove (410) thereon; a rocker arm (500), rotatably mounted to the mounting box (100), having one end fitted to the rotary pin (200), and the other end provided with a pin hole (510); a slidable pin (600), movably fitted in the pin hole (510) along the axial direction of the pin hole (510); and an adjusting component (700), arranged at the other end of the rocker arm (500) and connected to the slidable pin (600), where the adjusting component (700) is configured to adjust the position of the slidable pin (600) in the pin hole (510), and the slidable pin (600) is adjusted by the adjusting component (700) to fit to the guide groove (410) and slide along the guide groove (410).