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公开(公告)号：US20240044215A1
公开(公告)日：2024-02-08
申请号：US18206692
申请日：2023-06-07
Applicant: MAKITA CORPORATION
Inventor： Hidenori NAGASAKA , Tomohiko IMAE , Yoshihiro ITO
CPC classification number: E21B11/005 , E21B7/027 , E21B7/046
Abstract: A hole is formed in a drill target with improved workability. An electric work machine includes a motor, a motor housing accommodating the motor, a handle housing including a grip including a trigger switch operable to activate the motor, a reducer, a gear housing accommodating the reducer, a rotation output unit protruding frontward from the gear housing and rotatable under a rotational force transmitted from the motor through the reducer with a drill bit being attached to the rotation output unit, and a handle fastened to the gear housing and at least partially located laterally from the gear housing.
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公开(公告)号：US20170057064A1
公开(公告)日：2017-03-02
申请号：US15236718
申请日：2016-08-15
Applicant: MAKITA CORPORATION
Inventor： Goshi ISHIKAWA , Yoshihiro ITO , Toshihisa TAKADA
IPC: B25B23/147 , B25B21/02
CPC classification number: B25B23/1475 , B25B21/02
Abstract: In a rotary impact tool according to an aspect of the present disclosure, an impact mechanism rotates an output shaft by a rotational force of a motor and, when a torque equal to or greater than a given value is externally applied to the output shaft in a direction opposite a rotational direction of the output shaft, the impact mechanism intermittently applies an impact force as a momentary torque to the output shaft in the rotational direction of the output shaft. A protection unit stops the motor or reduces a rotational speed of the motor on condition that an abnormal impact detection unit detects the abnormal impact. A control unit controls activation of the protection unit differently when the rotational direction of the motor is set to a reverse rotational direction in comparison with when the rotational direction of the motor is set to a forward rotational direction.
Abstract translation: 在根据本公开的一个方面的旋转冲击工具中，冲击机构通过马达的旋转力使输出轴旋转，并且当等于或大于给定值的扭矩在外部施加到输出轴时 方向与输出轴的旋转方向相反，冲击机构在输出轴的旋转方向上间歇地将作为瞬时扭矩的冲击力施加到输出轴。 在异常冲击检测单元检测到异常影响的情况下，保护单元停止电机或降低电机的转速。 与马达的旋转方向设定为正向旋转方向相比，当马达的旋转方向设定为反转方向时，控制单元不同地控制保护单元的启动。
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公开(公告)号：US20150364972A1
公开(公告)日：2015-12-17
申请号：US14763626
申请日：2014-02-05
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO
Abstract: An angle impact driver includes a brushless motor having a motor shaft, a switch for energizing the brushless motor, an output shaft to which rotation of the brushless motor is transferred, the output shaft being angled with respect to the motor shaft, a housing accommodating the brushless motor and the switch, and a the sensor board detecting rotation of the motor shaft, in which the sensor board is secured to the brushless motor.
Abstract translation: 角度冲击驱动器包括具有电动机轴的无刷电动机，用于激励无刷电动机的开关，传递无刷电动机的旋转的输出轴，输出轴相对于电动机轴成角度;壳体， 无刷电动机和开关，以及检测电动机轴的旋转的传感器板，传感器板固定在无刷电动机上。
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公开(公告)号：US20220134527A1
公开(公告)日：2022-05-05
申请号：US17648224
申请日：2022-01-18
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO
Abstract: An impact power tool includes a front housing connected to a rear housing. A motor is disposed at least partially in the rear housing. An impulse case is disposed at least partially in the front housing. The impulse case is operably coupled to the motor to receive torque therefrom and be rotated thereby. A first protrusion is provided on an interior surface of the impulse case. A first blade is provided inside the impulse unit and is configured to be impacted by the first protrusion. An output shaft is partially disposed within the impulse unit and partially projects out of the impulse unit. The output shaft is configured to be rotated in response to the first protrusion impacting the first blade.
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公开(公告)号：US20200047322A1
公开(公告)日：2020-02-13
申请号：US16655556
申请日：2019-10-17
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO
Abstract: A rotary power tool, such as an oil pulse driver, includes: a motor, a pinion rotated by the motor, planet gears that mesh with the pinion, an internal gear that meshes with the planet gears and a shaft that is rotationally driven by the planet gears and disposed frontward of the planet gears. The internal gear comprises an internal gear part and an internal gear retaining part for holding the internal gear part. An oil unit bearing is disposed frontward of the internal gear part, and the oil unit bearing is held at a front part of the internal gear retaining part.
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Patent Agency Ranking
公开(公告)号：US20180104810A1
公开(公告)日：2018-04-19
申请号：US15846378
申请日：2017-12-19
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO
Abstract: A rotary power tool, such as an oil pulse driver, includes: a motor, a pinion rotated by the motor, planet gears that mesh with the pinion, an internal gear that meshes with the planet gears and a shaft that is rotationally driven by the planet gears and disposed frontward of the planet gears. The internal gear comprises an internal gear part and an internal gear retaining part for holding the internal gear part. An oil unit bearing is disposed frontward of the internal gear part, and the oil unit bearing is held at a front part of the internal gear retaining part.
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公开(公告)号：US20140371018A1
公开(公告)日：2014-12-18
申请号：US14295738
申请日：2014-06-04
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO
Abstract: A rotary power tool, such as an oil pulse driver, includes: a motor, a pinion rotated by the motor, planet gears that mesh with the pinion, an internal gear that meshes with the planet gears and a shaft that is rotationally driven by the planet gears and disposed frontward of the planet gears. The internal gear comprises an internal gear part and an internal gear retaining part for holding the internal gear part. An oil unit bearing is disposed frontward of the internal gear part, and the oil unit bearing is held at a front part of the internal gear retaining part.
Abstract translation: 诸如油脉冲驱动器的旋转动力工具包括：电动机，由电动机旋转的小齿轮，与小齿轮啮合的行星齿轮，与行星齿轮啮合的内齿轮以及由行星齿轮旋转驱动的轴 行星齿轮并放置在行星齿轮的前方。 内齿轮包括内齿轮部和用于保持内齿轮部的内齿轮保持部。 在内齿轮部的前方设置有油单元轴承，油单元轴承保持在内齿轮保持部的前部。
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公开(公告)号：US20230211489A1
公开(公告)日：2023-07-06
申请号：US18184159
申请日：2023-03-15
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO , Tomohiko IMAE , Jun UEDA
Abstract: A power tool including a rear cover simplifies assembly. A driver drill includes a motor including a stator and a rotor rotatable relative to the stator, a motor housing accommodating the motor, being cylindrical, and including a left housing and a right housing being laterally separable, a grip connected to a lower portion of the motor housing, an output unit in front of the motor and driven by the motor, and a rear cover supporting a rear portion of the rotor and closing a rear portion of the motor housing. The rear cover is held and fastened between the left housing and the right housing.
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公开(公告)号：US20230150108A1
公开(公告)日：2023-05-18
申请号：US17949652
申请日：2022-09-21
Applicant: MAKITA CORPORATION
Inventor： Yoshihiro ITO , Hidenori NAGASAKA
CPC classification number: B25H1/0042 , B23B45/003
Abstract: A rotary tool allows easy attachment and detachment of the rotary tool stand. A driver drill includes a motor, a housing accommodating the motor, a tip tool holder rotatable by the motor, and a connecting member held on the housing. The connecting member has at least one connecting hole through which a pole is placeable. The pole extends from a base included in a rotary tool stand. The base is placeable on a workpiece.
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公开(公告)号：US20220184792A1
公开(公告)日：2022-06-16
申请号：US17514691
申请日：2021-10-29
Applicant: MAKITA CORPORATION
Inventor： Takaharu NAKATSUKA , Yoshihiro ITO
Abstract: A torque sensor is less likely to lower detection accuracy. A screwing machine includes a motor including a stator and a rotor rotatable about a rotation axis, a gear case, a planetary gear, an internal gear connected to the planetary gear, a torque sensor including a front plate coupled to the internal gear, a rear plate supported by the gear case, a hollow portion located between the front plate and the rear plate, and a strain gauge fixed to the hollow portion, a bearing located between the stator and the rear plate and supporting at least a part of the rotor, and a bearing box surrounding the bearing and supporting the bearing.
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