Tool head positioning structure for flexible wrench, has retainer that abuts pushing unit and aligned with retracting unit of controller, and having proximal end that engages with tool head

摘要

The tool head positioning structure has a controller (30) with a pushing unit (321) and a retracting unit (322) that corresponds to a retainer (40), and a peripheral wall that abuts the inner periphery of a chamber (12). The depth between the pushing unit and peripheral wall of the controller is different from the depth between the retracting unit and peripheral wall. The retainer has a proximal end that engages with a tool head (50), while the retainer abuts the pushing unit and aligned with the retracting unit of the controller.