公开(公告)号：US20180021867A1

公开(公告)日：2018-01-25

申请号：US15625369

申请日：2017-06-16

Applicant: MAKITA CORPORATION

Inventor： Yosuke NAOI ,  Yasushi OGURA

IPC: B23D49/16 ,  B23D51/16

CPC classification number: B23D49/162 ,  B23D51/02 ,  B23D51/16 ,  B23D51/166

Abstract: A reciprocating saw serving as reciprocating tool is equipped with a motor, a drive transmission mechanism that converts rotation of the motor into reciprocating motion, a rod that is connected to the drive transmission mechanism and that engages in reciprocating motion, and an upper roller and a lower roller that are capable of rolling and that have depressed portions that are capable of coming in contact with the rod, wherein the cross-section of the rod has no corners, and the depressed portions of the upper roller and the lower roller have hourglass-like profiles.

公开(公告)号：US20230027337A1

公开(公告)日：2023-01-26

申请号：US17856692

申请日：2022-07-01

Applicant: MAKITA CORPORATION

Inventor： Hiroki IKUTA ,  Yosuke NAOI

IPC: F16H3/00 ,  F16H57/08 ,  A01G3/053

Abstract: A power tool includes a motor, a speed reducer and a speed-reducing-ratio change mechanism. The speed reducer includes planetary gear mechanisms arranged in multiple stages. The speed-reducing-ratio change mechanism is configured to change a speed reducing ratio of the speed reducer in response to a change of a rotating direction of a motor shaft. At least two stages of the planetary gear mechanisms are configured such that an internal gear in each stage selectively functions as a fixed element. The speed-reducing-ratio change mechanism includes a one-way clutch and a lock mechanism configured to non-rotatably lock the internal gears of the at least two stages when the one-way clutch does not transmit rotation, and to rotate the internal gears of the at least two stages when the one-way clutch transmits rotation. The at least two stages include a speed-increasing planetary gear mechanism and a speed-reducing planetary gear mechanism.

公开(公告)号：US20220226881A1

公开(公告)日：2022-07-21

申请号：US17567190

申请日：2022-01-03

Applicant: MAKITA CORPORATION

Inventor： Hiroki IKUTA ,  Yosuke NAOI

IPC: B21J15/26 ,  B21J15/28 ,  B21J15/10 ,  B21J15/02

Abstract: A power tool includes a motor and a gear speed reducer. The motor has a motor shaft that is rotatable in a normal direction and in a reverse direction. The gear speed reducer is operably coupled to the motor shaft. The gear speed reducer is configured such that a reduction ratio of the gear speed reducer is changed in response to a change of a rotation direction of the motor shaft.

公开(公告)号：US20200282482A1

公开(公告)日：2020-09-10

申请号：US16787503

申请日：2020-02-11

Applicant: MAKITA CORPORATION

Inventor： Yosuke NAOI ,  Akihito HARA ,  Yasushi OGURA ,  Wei YANG ,  Pengfei YANG ,  Hao Wei MEI ,  Tomohiro UKAI

IPC: B23D59/04 ,  B23D49/16 ,  B23D49/10

Abstract: A reciprocating tool easily supplies a lubricant, such as grease (lubricating oil), to a mechanism for reciprocating a slider, and prevents a lack of lubricant. A reciprocating saw as a reciprocating tool includes a motor, a reciprocating conversion mechanism that converts rotation of the motor to reciprocation, a slider connected to the reciprocating conversion mechanism and being reciprocable, and a slider guide that supports the slider in a reciprocable manner and includes a lubricant-passage member in contact with the slider to allow passage of at least part of a lubricant through the lubricant-passage member, and a lubricant reservoir located adjacent to the lubricant-passage member to store the lubricant.

公开(公告)号：US20180229350A1

公开(公告)日：2018-08-16

申请号：US15891696

申请日：2018-02-08

Applicant: MAKITA CORPORATION

Inventor： Yosuke NAOI ,  Takashi NAKANE ,  Hiroki IKUTA

IPC: B25B21/00 ,  F16D3/16 ,  F16H1/28 ,  F16H57/08

CPC classification number: B25B21/007 ,  B25B17/02 ,  B25B21/00 ,  B25B21/002 ,  B25B23/0007 ,  B25B23/0014 ,  B25B23/0035 ,  B25B23/0078 ,  F16D3/16 ,  F16H1/28 ,  F16H1/46 ,  F16H57/08

Abstract: An attachment includes a planetary reducer, a reaction force receiving member, and a universal joint. The planetary reducer has a first output shaft and a second output shaft connectable to a socket. The reaction force receiving member is connected to the first output shaft and has an arm part for contact with an external contact object. The universal joint has an input-side end part connectable to a final output shaft of a fastening tool and an output-side end part connected to the planetary reducer. The reaction force receiving member is configured to rotate integrally with the first output shaft in a direction opposite to the second output shaft by a reaction force caused by rotation of the socket. The universal joint is configured to transmit the torque inputted from the final output shaft via the input-side end part, to the planetary reducer via the output-side end part.