公开(公告)号：US10286537B2

公开(公告)日：2019-05-14

申请号：US15034723

申请日：2014-10-30

申请人： Hilti Aktiengesellschaft

发明人： Olaf Koch ,  Theo Kiesel ,  Helene Kaps ,  Matthias Keith

IPC分类号： B25D17/11 ,  B25D17/06

摘要： A portable power tool is disclosed. The tool has a tool holder in which a tool can be moveably inserted on a working axis in a striking direction. A percussion mechanism has a striker coupled via a pneumatic chamber to an exciter moved periodically along the working axis and an intermediate striker arranged in the striking direction downstream from striker. The intermediate striker is guided in a slide bearing with a tolerance coaxially to the working axis. The intermediate striker has a ring-shaped bead. A hollow-cylindrical backstop is arranged in the striking direction upstream from the bead. The backstop is moveably guided on a sliding surface with radial play along working axis. The radial play is at least three times as large as a tolerance of the guide of the intermediate striker in the slide bearing.