公开(公告)号：US20240058929A1

公开(公告)日：2024-02-22

申请号：US18361503

申请日：2023-07-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masayuki NAKAHARA ,  Soichiro YAMADA

IPC: B25B23/147 ,  B25B21/02

CPC classification number: B25B23/1475 ,  B25B21/02

Abstract: An impact rotary tool includes a driver, a drive shaft, a hammer, an anvil, a travel distance measuring device, and a torque estimator. The driver is configured to perform a turning operation. The travel distance measuring device is configured to measure a parameter relating to a hammer travel distance through which on application of impact to the anvil by the hammer, the hammer moves away from the anvil along an axial direction from a location of the application of the impact to the anvil by the hammer. The torque estimator is configured to estimate, based on at least the parameter relating to the hammer travel distance, a torque value generated by the impact.