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公开(公告)号：US20240173821A1
公开(公告)日：2024-05-30
申请号：US18516436
申请日：2023-11-21
Applicant: MAKITA CORPORATION
Inventor： Tatsuya NAKAMURA , Hiroki KANEKO , Yunosuke TANAKA , Yukiya MATSUOKA , Takahiro KAWAKAMI , Takafumi KOTSUJI
CPC classification number: B24B55/052 , B25F5/02 , B24B23/028
Abstract: A power tool includes a spindle, a housing, a cover body configured to be removably mounted to the housing, a first engagement part provided on or in the cover body, and a second engagement part provided on or in the housing. The cover body includes an upper plate part and an outer peripheral part. The second engagement part is movable between an engagement position and a disengagement position. The first and second engagement parts are configured to restrict rotation of the cover body around the drive axis relative to the housing by engaging with each other. The first engagement part is (i) at a same location as or radially outward of the outer peripheral part of the cover body in a radial direction orthogonal to the drive axis, and (ii) between an upper end and a lower end of the cover body in the up-down direction.
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公开(公告)号：US20180117728A1
公开(公告)日：2018-05-03
申请号：US15785705
申请日：2017-10-17
Applicant: MAKITA CORPORATION
Inventor： Takahiro KAWAKAMI , Yoshinori SASAKI
Abstract: A power tool, such as a grinder, includes a motor housing that houses a motor. A grip housing extends in a longitudinal direction of the power tool and has a first longitudinal end coupled to the motor housing, first and second battery-mount parts formed at a second longitudinal end, and a grip part disposed between the first and second longitudinal ends. First and second battery packs are respectively mountable on the first and second battery-mount parts, and the grip housing comprises an upper housing half joined to a lower housing half.
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公开(公告)号：US20170072532A1
公开(公告)日：2017-03-16
申请号：US15257987
申请日：2016-09-07
Applicant: MAKITA CORPORATION
Inventor： Takahiro KAWAKAMI , Satoshi NINAGAWA , Kenji SHIBATA , Ryosuke OTANI , Ryo IMUTA
CPC classification number: B24B55/052 , B24B23/02 , B24B23/028
Abstract: A grinder includes a motor, a housing, a spindle and a cover. The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The cover is provided on the spindle in the circumferential direction and at least partially covers a tool accessory, which is mounted on the spindle. The cover is configured such that at least one part deforms and/or is composed of an elastic material.
Abstract translation: 研磨机包括马达，外壳，主轴和盖子。 主轴从壳体向下突出，由电机驱动，从而旋转。 所述盖在圆周方向上设置在所述主轴上，并且至少部分地覆盖安装在所述主轴上的工具附件。 盖构造成使得至少一个部分变形和/或由弹性材料构成。
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公开(公告)号：US20150328763A1
公开(公告)日：2015-11-19
申请号：US14807291
申请日：2015-07-23
Applicant: MAKITA CORPORATION
Inventor： Miyabi ITO , Ryunosuke KUMAGAI , Shin SUGIURA , Akira MIZUTANI , Takahiro KAWAKAMI
CPC classification number: B25F5/02 , B24B23/028 , H02J7/00 , H02J7/0013 , H02J7/0045 , H02J7/0063
Abstract: An electric tool, such as an angle driver, has a main tool body with a front portion and a rear portion positioned opposite to the front portion. The main tool body houses a motor configured to receive electricity to function as a drive source. A gear head is coupled with the front portion of the main tool body wherein the gear head has a spindle in communication with a motor axis of the motor via mesh-engagement of bevel gears associated with the motor axis. The spindle has with a cutter tool accessory attached thereto such that rotation of the motor axis produces a commensurate rotation of the cutter tool accessory. Battery attachment portions are associated with the rear portion of the main tool body and are configured to receive a corresponding set of batteries that provide electricity to power the motor.
Abstract translation: 诸如角度驱动器的电动工具具有主工具主体，其具有与前部相对的前部和后部。 主工具主体容纳配置为接收电力以用作驱动源的电动机。 齿轮头与主工具主体的前部联接，其中齿轮头具有通过与电机轴线相关联的锥齿轮的啮合而与马达的马达轴线连通的主轴。 主轴具有附接到其上的刀具附件，使得电动机轴的旋转产生刀具附件的相应旋转。 电池安装部分与主工具主体的后部相关联，并且被配置为接收提供电力以对电动机供电的相应的一组电池。
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公开(公告)号：US20220263377A1
公开(公告)日：2022-08-18
申请号：US17597455
申请日：2020-07-17
Applicant: MAKITA CORPORATION
Inventor： Yoshinori SASAKI , Masayoshi TORIHARA , Van Luyen TONG , Takahiro KAWAKAMI
Abstract: An electric work machine includes: a motor having a stator disposed around a rotor; a stator-holding member, which holds the stator; one or more bearings, which rotatably support(s) the rotor; and one or more bearing-retaining members, which is (are) supported by the stator-holding member in an immovable manner in the radial direction, retain(s) the bearing(s), and is (are) made of a metal. The stator-holding member is made of a material that exhibits a water-absorption coefficient of 1.5 wt % or less at equilibrium in an ambient atmosphere at a temperature of 23° C. and a relative humidity of 50%.
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Patent Agency Ranking
公开(公告)号：US20180205293A1
公开(公告)日：2018-07-19
申请号：US15919712
申请日：2018-03-13
Applicant: MAKITA CORPORATION
Inventor： Takahiro KAWAKAMI , Masatoshi NAKAHAMA
Abstract: A power tool includes a brushless motor having a stator and a rotor, which includes a rotary shaft extending in a front-rear direction of the power tool. The rotary shaft rotates a spindle that extends in an up-down direction of the power tool. A fan is fixedly coupled to the rotary shaft and rotates therewith. A switch is disposed rearward of the brushless motor and a controller is disposed rearward of the switch in the front-rear direction. A battery pack is disposed rearward of the controller. A main-body housing houses the brushless motor, the switch and the controller. The main-body housing includes a first tubular part, which houses the brushless motor, and a second tubular part, which houses the switch. The diameter of the second tubular part is smaller than the diameter of the first tubular part.
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公开(公告)号：US20170334056A1
公开(公告)日：2017-11-23
申请号：US15524059
申请日：2015-10-26
Applicant: MAKITA CORPORATION
Inventor： Takahiro KAWAKAMI , Yonosuke AOKI
Abstract: A disc grinder includes a tool main body that may include, for example, as from the front side, a drive portion, a handle portion, and a battery attachment portion. A rechargeable battery may be attached to the battery attachment portion through sliding. A brushless DC motor rotationally drives a motor shaft by electric power from the rechargeable battery. A reduction gear unit may reduce in speed the rotational drive of the motor shaft and may transmit the rotational drive to an output shaft to which a grinding wheel is mounted. The brushless DC motor and a reduction gear of the reduction gear unit may be arranged such that the rotational axis of the motor shaft and the rotational axis of the output shaft are parallel to each other.
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公开(公告)号：US20150280532A1
公开(公告)日：2015-10-01
申请号：US14634214
申请日：2015-02-27
Applicant: MAKITA CORPORATION
Inventor： Akira MIZUTANI , Takahiro KAWAKAMI , Shoichi ISHIKAWA
CPC classification number: H01H9/20 , B25F5/00 , H01H2231/048 , H01H2300/024 , H02K7/14 , H02K11/28
Abstract: A rechargeable grinder includes a brushless motor, a main body housing configured to accommodate the brushless motor, a main switch and a micro switch configured to distribute power to the brushless motor, and a switch lever capable of moving with respect to the main switch and the micro switch, wherein a lock off lever capable of operating the micro switch in association with movement of the switch lever toward a switch is provided so as to be movable between a lock release position in which the micro switch can be operated and a lock position in which the micro switch cannot be operated.
Abstract translation: 可再充电研磨机包括无刷电动机，构造成容纳无刷电动机的主体壳体，配置成将动力分配给无刷电动机的主开关和微动开关，以及能够相对于主开关和 微型开关，其中，能够与开关杆朝向开关的移动相关联地操作微型开关的锁定杆被设置成能够在其中可以操作微动开关的锁定释放位置和可以操作微型开关的锁定位置之间移动 微动开关不能操作。
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公开(公告)号：US20140191481A1
公开(公告)日：2014-07-10
申请号：US14146120
申请日：2014-01-02
Applicant: MAKITA CORPORATION
Inventor： Takahiro KAWAKAMI , Shin NAKAMURA , Masatoshi NAKAHAMA
IPC: B23Q3/14
CPC classification number: B23Q3/14 , B23B31/10 , B23D61/006 , B24B23/04 , B24B45/006 , B27B5/32 , B27B19/006 , Y10T279/33 , Y10T279/34
Abstract: A power tool includes a clamp shaft for clamping a tool accessory to the power tool and a clamp shaft holding mechanism for selectively locking the clamp shaft to hold the clamp shaft in a position that secures the tool accessory on the power tool. The power tool also includes a lever for shifting the clamp shaft holding mechanism between clamped and unclamped states. The lever is configured such that when an operator grasps the lever and moves it toward a position for releasing the tool accessory, the lever and the operator's hand move away from the tool accessory.
Abstract translation: 电动工具包括用于将工具附件夹持到动力工具的夹紧轴和用于选择性地锁定夹紧轴以将夹持轴保持在将工具附件固定在动力工具上的位置的夹紧轴保持机构。 动力工具还包括用于在夹紧状态和非夹紧状态之间移动夹紧轴保持机构的杆。 杠杆被构造成使得当操作者抓住杆并将其移动到用于释放工具附件的位置时，杠杆和操作者的手离开工具附件。
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公开(公告)号：US20180281146A1
公开(公告)日：2018-10-04
申请号：US15762608
申请日：2016-09-23
Applicant: MAKITA CORPORATION
Inventor： Akira TOMONAGA , Katsuhito FUJINAMI , Ryo IMUTA , Masatoshi NAKAHAMA , Akira MIZUTANI , Takahiro KAWAKAMI , Hideharu MUTO , Junya ISHIKAWA , Ken GOTO
CPC classification number: B24B23/022 , B24B23/02 , B24B49/10 , B24B55/05 , B24B55/052
Abstract: A grinder according to one aspect of the present disclosure includes a motor, a housing for housing the motor, a spindle protruding from the housing and configured to be driven to be rotated by the motor, a wheel cover configured to cover a part of a tip end tool attached to the spindle, a detector configured to detect the wheel cover, and a controller configured to stop or restrict the spindle being driven by the motor in response to non-detection of the wheel cover by the detector.
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