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公开(公告)号：US12226841B2
公开(公告)日：2025-02-18
申请号：US17678257
申请日：2022-02-23
Applicant: MAKITA CORPORATION
Inventor： Tomohiro Ukai , Shoichi Ishikawa
Abstract: A reciprocating cutting tool reduces dispersion of dust. The reciprocating cutting tool includes a reciprocation converter drivable by a motor, a rod-like slider connected to the reciprocation converter to be reciprocable, a blade holder at the front end of the slider to hold a blade, a power transmission housing housing the reciprocation converter and allowing the slider to protrude from its front end, a cover outward from the power transmission housing, and a fan rotatable together with a rotor in the motor. A first passage of cooling air from the fan is defined between the power transmission housing and the cover. The first passage branches into a second passage toward the blade holder and a third passage not toward the blade holder.
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公开(公告)号：US11554430B2
公开(公告)日：2023-01-17
申请号：US17494581
申请日：2021-10-05
Applicant: MAKITA CORPORATION
Inventor： Tomohiro Ukai , Yuta Yamashita
Abstract: A reciprocating tool includes a housing, a support body, a slider, a motor, a driving mechanism, a first biasing member, a manipulation member and a first change mechanism. The housing has a first axis that defines a front-rear direction of the reciprocating tool. The support body is supported within the housing. The slider is supported by the support body to be linearly movable. The driving mechanism is operably coupled to the slider and configured to reciprocally move the slider relative to the support body using power of the motor. The first change mechanism is operably coupled to the manipulation member and configured to selectively enable and disable the first biasing member to bias the slider in response to manipulation of the manipulation member. When biasing of the slider by the first biasing member is enabled by the first change mechanism, the first biasing member biases the slider downward.
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公开(公告)号：US10259060B2
公开(公告)日：2019-04-16
申请号：US15045692
申请日：2016-02-17
Applicant: MAKITA CORPORATION
Inventor： Yudai Sugino , Tomohiro Ukai
Abstract: A reciprocating tool includes a motor, a crank, a connecting rod, a rod, a tool bit, and a counter weight. The tool bit is mounted such that the action portion is positioned on a side opposite to a side with the rod central axis or the extended line of the rod central axis viewing from the rotational center of the crank. The first eccentric shaft and the second eccentric shaft are disposed such that at a position where the first eccentric shaft causes the rod to reach top dead center (TDC), the second eccentric shaft causes the counter weight to reach bottom dead center (BDC) or a point before the BDC, and at a position where the first eccentric shaft causes the rod to reach the BDC, the second eccentric shaft causes the counter weight to reach a point before the TDC.
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公开(公告)号：US11831224B2
公开(公告)日：2023-11-28
申请号：US18088904
申请日：2022-12-27
Applicant: MAKITA CORPORATION
Inventor： Ryosuke Hara , Tomohiro Ukai
IPC: B23D49/16 , H02K7/14 , H02K7/075 , H02K7/04 , B26D5/14 , F16H21/18 , H02K9/06 , B23B45/00 , B23B45/02 , H02K5/20 , H02K9/02 , H02K5/04
CPC classification number: H02K7/145 , B23B45/001 , B23B45/02 , B23D49/16 , B26D5/14 , F16H21/18 , H02K7/04 , H02K7/075 , H02K9/06 , H02K5/04 , H02K5/207 , H02K9/02
Abstract: A reciprocating tool includes a motor, a reciprocating member, and a crank mechanism. The motor is disposed in a housing. The reciprocating member projects from the housing. The crank mechanism converts rotation of a rotation shaft of the motor into reciprocation of the reciprocating member. The crank mechanism rotates around an axis in a lateral direction by rotation transmission from the rotation shaft, and the crank mechanism includes a crank member having an eccentric pin, a connecting rod coupling the eccentric pin to the reciprocating member, and a balancer coupled to the eccentric pin, and the balancer is supported by the eccentric pin alone in the housing.
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公开(公告)号：US10027201B2
公开(公告)日：2018-07-17
申请号：US15045609
申请日：2016-02-17
Applicant: MAKITA CORPORATION
Inventor： Ryosuke Hara , Tomohiro Ukai
Abstract: A reciprocating tool includes a motor, a reciprocating member, and a crank mechanism. The motor is disposed in a housing. The reciprocating member projects from the housing. The crank mechanism converts rotation of a rotation shaft of the motor into reciprocation of the reciprocating member. The crank mechanism rotates around an axis ma lateral direction by rotation transmission from the rotation, shaft, and the crank, mechanism includes a crank member having an eccentric pin, a connecting rod coupling the eccentric pin to the reciprocating member, and a balancer coupled to the eccentric pin, and the balancer is supported by the eccentric pin alone in the housing.
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Patent Agency Ranking
公开(公告)号：US11839925B2
公开(公告)日：2023-12-12
申请号：US17856282
申请日：2022-07-01
Applicant: MAKITA CORPORATION
Inventor： Tomohiro Ukai , Yuki Miwa
Abstract: A reciprocating cutting tool reduces deteriorating movement of an operating drum due to entry of chips between the operating drum and a housing. A reciprocating cutting tool includes a motor, a slider being rod-like and extending in a front-rear direction, a reciprocation converter that converts rotation of the motor to reciprocation in the front-rear direction and transmits the reciprocation to the slider, a power transmission housing accommodating the reciprocation converter, a tip tool holder at a front end of the slider to detachably receive a tip tool, and an operating drum operable to attach or detach the tip tool with the tip tool holder through rotation. The operating drum is rotatably held on the power transmission housing with one or more ring members.
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公开(公告)号：US11075567B2
公开(公告)日：2021-07-27
申请号：US16658265
申请日：2019-10-21
Applicant: MAKITA CORPORATION
Inventor： Ryosuke Hara , Tomohiro Ukai
Abstract: A reciprocating tool includes a motor, a reciprocating member, and a crank mechanism. The motor is disposed in a housing. The reciprocating member projects from the housing. The crank mechanism converts rotation of a rotation shaft of the motor into reciprocation of the reciprocating member. The crank mechanism rotates around an axis in a lateral direction by rotation transmission from the rotation shaft, and the crank mechanism includes a crank member having an eccentric pin, a connecting rod coupling the eccentric pin to the reciprocating member, and a balancer coupled to the eccentric pin, and the balancer is supported by the eccentric pin alone in the housing.
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公开(公告)号：US10315300B2
公开(公告)日：2019-06-11
申请号：US15148339
申请日：2016-05-06
Applicant: MAKITA CORPORATION
Inventor： Hiroki Ikuta , Ken Yamauchi , Takamasa Hanai , Masao Miwa , Tomohiro Ukai , Shusaku Wakatsuki , Akihiro Ito
Abstract: A dust collection device, that collects dust particles generated by an impact tool, has a feature that enables the attachment of the device to the impact tool, which is not provided with an attachment section for the device. The dust collection device has a tool body and an auxiliary handle, attached removably to the tool body, and is attached to an electric hammer that, in the lengthwise direction, linearly operates a tool bit mounted to the tip region of the tool body, and collects dust generated by the electric hammer. The dust collection device has: a dust collection unit that has a dust intake port at the tip; a dust collection hose, connected to the dust collection unit, for transferring dust to the downstream side; and a hose-holding unit that holds the dust collection hose. The hose-holding unit can be attached to and removed from the auxiliary handle.
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公开(公告)号：US20150014007A1
公开(公告)日：2015-01-15
申请号：US14369258
申请日：2012-12-26
Applicant: MAKITA CORPORATION
Inventor： Tomohiro Ukai , Tooru Itakura , Akinori Ito
CPC classification number: B25F5/001 , B24B23/028 , B24B47/12 , B25B21/00 , B25B23/0064 , B25F5/008 , B25F5/02
Abstract: A power tool includes an outer rotor electric motor, a spindle and a gear train, and a tool accessory can be attached the spindle. The gear train transmits the rotational output of the electric motor to the spindle, and the speed reduction ratio of the gear train may be less than the speed reduction ratio of the gear train would need to be if the motor were instead an inner rotor electric motor.
Abstract translation: 电动工具包括外转子电动机，主轴和齿轮系，并且工具附件可以安装在主轴上。 齿轮系将电动机的旋转输出传递到主轴，并且齿轮系的减速比可以小于如果电动机代替内转子电动机所需的齿轮系的减速比 。
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公开(公告)号：US12095344B2
公开(公告)日：2024-09-17
申请号：US18380765
申请日：2023-10-17
Applicant: MAKITA CORPORATION
Inventor： Ryosuke Hara , Tomohiro Ukai
IPC: B23D49/00 , B23B45/00 , B23B45/02 , B23D49/16 , B26D5/14 , F16H21/18 , H02K7/04 , H02K7/075 , H02K7/14 , H02K9/06 , H02K5/04 , H02K5/20 , H02K9/02
CPC classification number: H02K7/145 , B23B45/001 , B23B45/02 , B23D49/16 , B26D5/14 , F16H21/18 , H02K7/04 , H02K7/075 , H02K9/06 , H02K5/04 , H02K5/207 , H02K9/02
Abstract: A reciprocating tool includes a motor, a reciprocating member, and a crank mechanism. The motor is disposed in a housing. The reciprocating member projects from the housing. The crank mechanism converts rotation of a rotation shaft of the motor into reciprocation of the reciprocating member. The crank mechanism rotates around an axis in a lateral direction by rotation transmission from the rotation shaft, and the crank mechanism includes a crank member having an eccentric pin, a connecting rod coupling the eccentric pin to the reciprocating member, and a balancer coupled to the eccentric pin, and the balancer is supported by the eccentric pin alone in the housing.
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