Patent ID: 8141255

Claim:
A multi-impact hand tool comprising: a sleeve including an axial hole, and the axial hole including an open end and a closed end that are oppositely arranged; a tool head having one end connected to the closed end of the sleeve, and the other end of the tool head being a working end; a movable rod including a handle and an assembling end that are oppositely arranged, the assembling end being interiorly formed with a groove including a limiting portion, the assembling end of the movable rod being slidably disposed in the axial hole of the sleeve; a spring disposed in a space formed by the axial hole of the sleeve and the groove of the movable rod; and an impact block including an end surface and an impact portion that are oppositely arranged, the impact block being slidably disposed in the axial hole of the sleeve and the groove of the movable rod, the multi-impact hand tool being characterized in that: the spring has a first end which is a free end located toward the limiting portion of the groove of the movable rod, and a second end of the spring is fixed to the end surface of the impact block, the spring being slidable within the groove until abutment of the free end with the limiting portion restricts the sliding movement of the spring towards the working end and sliding movement towards the closed end moves the free end away from the limiting portion; when the movable rod moves downward, the assembling end of the movable rod will impact the closed end, producing an impact force to bring the impact block and the spring out of contact with the closed end, making the impact block and the spring move in the space formed by the axial hole of the sleeve and the groove of the movable rod, then an elastic force of the spring will make the impact block and the spring bounce back and forth repeatedly between the closed end and the limiting portion, and as a result, the impact block will repeatedly impact the closed end of the sleeve, driving the tool head.