| 摘要 |
A socket wrench extension structure includes an extension shank having one distal end defining a longitudinal circular chamber, a ball receiving hole defined in an outer periphery of the distal end of the extension shank and connecting to the circular chamber, a knob receiving hole defined in the outer periphery of the distal end of the extension shank and connecting to the circular chamber, a drive rod slidably mounted in the circular chamber and having a first end defining a ball receiving recess aligning with the ball receiving hole of the extension shank and a second end defining a knob receiving recess aligning with the knob receiving hole of the extension shank, a biasing member mounted in the circular chamber of the extension shank and biased between the second end of the drive rod and a wall of the circular chamber, a ball movably mounted in the ball receiving hole and slidably received in the ball receiving recess, and a press knob movably mounted in the knob receiving hole and slidably received in the knob receiving recess.
|
