公开(公告)号：US11285586B2

公开(公告)日：2022-03-29

申请号：US16115374

申请日：2018-08-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masari Muramatsu ,  Takashi Kusagawa ,  Fumiaki Sawano ,  Hidenori Shimizu

IPC: B25F5/00 ,  B25B21/02 ,  B25F5/02 ,  H02K11/215 ,  B25B23/147 ,  H02K7/08 ,  H02K5/173 ,  H02K7/14

Abstract: An electric power tool includes a bearing retainer that retains a bearing for supporting a motor shaft, a transmission mechanism that transmits a rotational output of a motor to a front-end tool and a rotating body attached to an end of the motor shaft. The bearing retainer includes an extension that extends in a direction of axial line from an end face position on the bearing. At least a part of the rotating body is provided in front of a rear end of the extension.

公开(公告)号：US20180272510A1

公开(公告)日：2018-09-27

申请号：US15919943

申请日：2018-03-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masari Muramatsu ,  Takashi Kusagawa

IPC: B25B21/02 ,  B25F5/00 ,  B25D11/04 ,  B25D11/10

CPC classification number: B25B21/02 ,  B25B21/026 ,  B25D11/04 ,  B25D11/104 ,  B25D2211/065 ,  B25D2250/045 ,  B25F5/001

Abstract: A secondary hammer support structure in a rotary impact tool is structured such that a plurality of steel balls are disposed between a secondary hammer and a retaining member. The plurality of steel balls are arranged between the first retaining groove of the secondary hammer and the second retaining groove of the retaining member. The retaining member is formed as a member separate from the spindle and has a retaining surface for retaining steel balls and a mounting surface mounted to the spindle so as not be rotatable. The mounting surface of the retaining member is mounted to a front member of a carrier.