公开(公告)号：US20210331305A1

公开(公告)日：2021-10-28

申请号：US17273705

申请日：2019-06-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Itaru MURUI ,  Hiroaki MURAKAMI ,  Akiko HONDA ,  Masanori NAKAMOTO ,  Mitsumasa MIZUNO ,  Takashi KUSAGAWA ,  Masahiro SATO

IPC: B25F5/00 ,  G05B15/02

Abstract: An electric power tool includes: a motor; an output shaft; and a power transmission mechanism that transmits a rotational output of the motor to the output shaft. A motor control unit controls rotation of the motor in accordance with an on operation of the user operation switch performed by a user. A detector detects physical quantity data while the motor is being rotated. A status determination unit determines whether the electric power tool is in a deteriorated status, by using the physical quantity data. A notification interface communicates that the electric power tool is in a deteriorated status while the motor is not being rotated.

公开(公告)号：US20230271306A1

公开(公告)日：2023-08-31

申请号：US18043686

申请日：2021-07-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masanori NAKAMOTO ,  Hiroaki MURAKAMI ,  Akiko HONDA ,  Kimitaka OZAWA

IPC: B25B23/147 ,  B25B21/02

CPC classification number: B25B23/1475 ,  B25B21/02

Abstract: An impact rotary tool includes a drive source, an impact force generator, an output shaft, a torque measuring unit, and a torque calculator. The impact force generator is configured to generate impact force in pulse form from power of the drive source. The output shaft is configured to transmit the impact force to a tip tool. The torque measuring unit is configured to measure a torque applied to the output shaft. The torque calculator is configured to, when a torque waveform of the torque measured by the torque measuring unit during one impact includes a plurality of peak values, calculates the tightening torque in accordance with a largest peak value of one or more second or subsequent peak values.

公开(公告)号：US20220241943A1

公开(公告)日：2022-08-04

申请号：US17624525

申请日：2020-05-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masanori NAKAMOTO ,  Hiroaki MURAKAMI

IPC: B25B23/147 ,  G05B19/18

Abstract: An electric tool system includes an electric tool and an inspection device. The electric tool includes: a tightening unit configured to tighten a workpiece onto an attaching target by driving force of a drive source; and a sensor configured to measure a tightening torque provided by the tightening unit. The inspection device includes a measuring unit configured to measure tightening force applied from the tightening unit. The electric tool system further includes an association processor configured to associate a first torque measured value with a second torque measured value. The first torque measured value corresponds to a measurement result by the sensor. The second torque measured value corresponds to a measurement result by the measuring unit.

公开(公告)号：US20210323125A1

公开(公告)日：2021-10-21

申请号：US17273702

申请日：2019-06-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Itaru MURUI ,  Hiroaki MURAKAMI ,  Akiko HONDA ,  Masanori NAKAMOTO ,  Takashi KUSAGAWA ,  Masahiro SATO ,  Mitsumasa MIZUNO

IPC: B25B23/147 ,  G05B19/4063 ,  B25F5/00

Abstract: In an electric power tool, an acquisition unit acquires physical quantity data detected while a motor is being rotated. A storage unit stores the physical quantity data and time information related to time when the physical quantity data is acquired, mapping the physical quantity data and the time information to each other. A transmission unit transmits the physical quantity data and the time information to a server system. The server system includes: a server-side reception unit that receives the physical quantity data and the time information transmitted; and a status evaluation unit that evaluates a level of a status of the electric power tool by using the physical quantity data and the time information.