公开(公告)号：US20230398664A1

公开(公告)日：2023-12-14

申请号：US18324762

申请日：2023-05-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akiko HONDA ,  Masaya SATO ,  Takahiro UEDA ,  Kimitaka OZAWA ,  Takashi KUSAGAWA

IPC: B25B21/02

CPC classification number: B25B21/02

Abstract: An impact rotary tool includes a hammer, an anvil, an output shaft, a housing, a bearing (first bearing), and a buffer member. The buffer member includes an elastic member. The anvil has a first facing region. The output shaft has a second facing region. The buffer member is interposed between the anvil and the output shaft. The buffer member regulates a gap distance between the second facing region and the first facing region such that when a maximum load is transmitted from the hammer to the elastic member, the second facing region faces the first facing region with a gap left between the second facing region and the first facing region in a thrusting direction.

公开(公告)号：US20230051397A1

公开(公告)日：2023-02-16

申请号：US17881290

申请日：2022-08-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takashi KUSAGAWA ,  Takahiro UEDA ,  Akiko HONDA ,  Kimitaka OZAWA

IPC: B25F5/00 ,  B25B21/02

Abstract: An impact rotary tool includes a hammer and an anvil that transmits rotational impact force from the hammer to a tip tool. The anvil includes a first member and a second member. The first member holds the tip tool thereon. The first member is fitted into the second member. The rotational impact force is applied to the second member. The first member and the second member are arranged to be fitted into each other in a fitting portion. The fitting portion has a tolerating mechanism. The tolerating mechanism tolerates misalignment of a first rotational axis with a second rotational axis. The first rotational axis is a rotational axis of the first member. The second rotational axis is a rotational axis of the second member.

公开(公告)号：US20220410352A1

公开(公告)日：2022-12-29

申请号：US17849039

申请日：2022-06-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kimitaka OZAWA ,  Akiko HONDA ,  Takahiro UEDA ,  Takashi KUSAGAWA ,  Masaya SATO ,  Mitsumasa MIZUNO

IPC: B25B21/02

Abstract: An impact tool includes a motor, a hammer, and an anvil. The hammer is configured to be rotated around a rotation axis by motive power provided from the motor. The anvil is configured to be rotated around the rotation axis by receiving striking force from the hammer in a circumferential direction of the rotation axis. In the impact tool, moment of inertia of the hammer around the rotation axis is 10 or more times moment of inertia of the anvil around the rotation axis.

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：US20230398674A1

公开(公告)日：2023-12-14

申请号：US18324769

申请日：2023-05-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masaya SATO ,  Kimitaka OZAWA ,  Takashi KUSAGAWA ,  Akiko HONDA ,  Takahiro UEDA

IPC: B25D17/24 ,  B25B21/02 ,  B25D17/11

CPC classification number: B25D17/24 ,  B25B21/02 ,  B25D17/11 ,  B25D2250/331

Abstract: An impact rotary tool includes a hammer, an anvil, an output shaft, a housing, and a bearing (first bearing). The bearing (first bearing) is held by the housing. The anvil includes a first contact portion. The output shaft includes a second contact portion. The second contact portion receives, from the first contact portion, force that causes the output shaft to rotate. The bearing (first bearing) is in contact with at least one of the first contact portion or the second contact portion and supports at least one of the output shaft or the anvil rotatably.