公开(公告)号：US20210220959A1

公开(公告)日：2021-07-22

申请号：US17273439

申请日：2019-09-06

Applicant: MAKITA CORPORATION

Inventor： Takashi MATSUBARA ,  Shunpei YAMAJI ,  Akira MIZUTANI ,  Ryosuke OTANI ,  Hiroki KANEKO

IPC: B24B23/00 ,  B24B23/02 ,  B24B55/05 ,  B25F5/02

Abstract: A power tool, such as a grinder, may include: a prime mover such as a motor; a power-transmission mechanism operably connected to the prime mover; a housing that houses the prime mover and the power-transmission mechanism; and a tool-accessory retaining part for holding a tool accessary. The tool-accessory retaining part is operably connected to the power-transmission mechanism. An accessory is mounted on the housing in a detachable manner. A link member moves in response to mounting and demounting of the accessory. A detection sensor is housed in an interior of the housing and includes a non-contact sensor device. The detection sensor is configured to detect movement of the link member using the non-contact sensor device.