| 摘要 |
A wrench includes a main body 1, a jaw portion 2, a handle 5 and an elastic element 4. The main body, formed in one piece, has a fixed jaw 11 and a sliding slot 12. The jaw portion has a movable jaw 21 wherein a bottom of the jaw forms a sliding portion 221 and at least one restricting recess 222b. The handle has at least one toggle element 53 which extend/s into the restricting recess/es. The handle is pivotably connected to the main body through pin 15 and apertures 13 and 54. A contact surface between a bottom of the sliding portion and a bottom of the sliding slot defines an interface wherein an extension of the interface traverses the restricting recess and the toggle element. The elastic element is disposed between the main body and the movable jaw so that it provides a resilient bias that tends to move the jaws together. When the handle is at a driving position, the toggle element abuts against the sliding portion. When the handle is at a release position, the movable jaw is able to move away from the fixed jaw. |
