| 摘要 |
<p>A screwdriver comprises a tip barrel, a rotary tip rack and a push rod. The rotary tip rack is rotatably disposed at the rear of the tip barrel, the rotary tip rack is provided with axial accommodation holes to accommodate tips, and the accommodation holes may be rotated to axially correspond to an inner hole of the tip barrel. The push rod is disposed at the rear of the rotary tip rack and axially corresponds to the inner hole of the tip barrel. The inner hole of the tip barrel comprises a torque transfer segment at a front portion and a guide segment at a rear portion. The walls of the guide segment serve as a guide surface. The screwdriver may further comprise a hand grip and a push button assembly. When the push button assembly is positioned at a first positioning portion at a front portion of a slideway on the hand grip, the push rod extends into an accommodation hole on the tip rack, and a tip in the accommodation hole is pushed to the tip barrel on the hand grip until the tip protrudes from the tip barrel. When the push button assembly is located at a rear portion of the slideway on the hand grip, the push rod is located at the rear of the tip rack, and pulls the corresponding tip back into the corresponding accommodation hole. The screw driver requires few components, has a simple structure, and allows for easy and convenient tip changes.</p> |
