| 摘要 |
A ratchet control structure includes a socket having a polygonal slot and inner ratchet teeth, a twisting head being an upper semi-circular body inserted into and combined with the socket, and a control ring fit with the twisting head and restricted by a bottom portion of the socket. The semi-circular body is for positioning two engagement blocks and has an elastic circular ball. An actuator is disposed below the twisting head. An inner wall of the control ring has two projecting push blocks facing the engagement blocks, and three arced slots for engaging with the circular ball so that the control ring can be positioned at three positions.
|
