Self-locking folding caster operated by single handle

The invention relates to a self-locking folding caster operated by a single handle. The caster is composed of a shell body (1), an operating mechanism, and a universal wheel mechanism; the operating mechanism is included in the shell body (1); the operating mechanism includes a torsion spring (2), a clamping hook rotating shaft (3), and a clamping hook (4); and the universal wheel mechanism includes a wheel seat (8), a universal wheel (9), and a wheel buckle (7) connected to the universal wheel (9). The self-locking folding caster can achieve that one operating mechanism simultaneously controls locking of the folding caster in two states of folding and unfolding, achieves automatic locking of a folding wheel mechanism, is simpler in unlocking operation, and enables the volume of the wholemechanism to be greatly reduced, so as to be applicable to various scenes. 本发明涉及种单手柄操作自锁折叠脚轮，由壳体(1)、操纵机构、万向轮机构组成；壳体(1)内部包含操纵机构；操纵机构包括扭簧(2)，卡勾转轴(3)和卡勾(4)；万向轮机构包括轮座(8)、万向轮(9)以及连接在万向轮(9)上的轮卡扣(7)。本发明可以实现个操纵机构同时控制折叠轮收起和放下两种状态的锁定，实