| 摘要 |
A box cutter includes a housing 40 with a blade slide 10 slidably received therein. A pivotal member 30 is pivotably connected to of the blade slide. An inclined face 31 is defined in one of the surfaces of the pivotal member and is gradually raised. The inclined face is connected to a pressing area 32 which has two respective rounded guide portions 33. A spring 46 is connected between the pivotal member and the housing to maintain the blade slide at the initial position. A button 60 is slidably connected to outside of a cover 50 and a spring 54 is connected between the button and the cover. The button is moved to move the blade slide from the initial position thereof to an extended position. When the blade 20 is cutting a workpiece, the blade is tilt and the pivotal member is pivoted by the cover so that blade slide is retracted into the housing. |
