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公开(公告)号：US20250058447A1
公开(公告)日：2025-02-20
申请号：US18937154
申请日：2024-11-05
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Taro HISANO , Kazuki NAKAGAWA
Abstract: A power tool having a hammer mechanism has a tool body that houses a motor and a driving mechanism and extends in a front-rear direction; a handle including a grip part that extends in an up-down direction orthogonal to the front-rear direction behind the tool body and has a lower end formed as a free end and is arranged below the driving axis; and a plurality of biasing members configured to elastically connect the tool body and the handle. The biasing members include at least one first biasing member arranged above the driving axis in the up-down direction, and at least one second biasing member arranged below the driving axis in the up-down direction. In this power tool, a biasing force of the at least one second biasing member is larger than a biasing force of the at least one first biasing member.
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公开(公告)号：US20240149423A1
公开(公告)日：2024-05-09
申请号：US18380412
申请日：2023-10-16
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Yusuke TAKANO , Makoto CHIKARAISHI
IPC: B25D17/20
CPC classification number: B25D17/20 , B25D16/006 , B25D2217/0061 , B25D2217/0065
Abstract: A power tool having a hammer mechanism, including: a connecting part connectable with a dust collector, and with a connection flow path to suck in the air from the dust collector to generate a suction power in the dust collector; a motor with a rotating shaft; a first fan to rotate with the rotating shaft and generate a first air flow to cool down the motor; a second fan to rotate with the first fan and generate a second air flow to generate the suction power; a housing with a first exhaust port to discharge the first air flow and a second exhaust port to discharge the second air flow; a first exhaust flow path to guide the first air flow to the first exhaust port; and a second exhaust flow path separated from the first exhaust flow path to guide the second air flow to the second exhaust port.
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公开(公告)号：US20220266438A1
公开(公告)日：2022-08-25
申请号：US17588810
申请日：2022-01-31
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Hitoshi IIDA , Taro HISANO
Abstract: An electric power tool includes a motor, a driving side member, and a driven side member. The driving side member and the driven side member have mutually opposed surfaces. A plurality of cam teeth are respectively disposed on concentric circles on the opposed surfaces. The plurality of cam teeth have meshing surfaces inclined at predetermined lead angles. A torque limiter is formed to disengage the engagement of the meshing surfaces of the cam teeth by moving the one member in a separation direction from the other member when load of the driven side member increases. The respective cam teeth are formed such that the lead angles of the meshing surfaces are different between a forward rotation side and a reverse rotation side. A transmission torque transmitted from the driving side member to the driven side member is equal between the forward rotation and the reverse rotation.
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公开(公告)号：US20210331304A1
公开(公告)日：2021-10-28
申请号：US17366159
申请日：2021-07-02
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Taro HISANO
Abstract: A work tool includes a motor, a driving mechanism, a body housing and a handle. The driving mechanism is configured to perform an operation of linearly reciprocating the tool accessory along a driving axis extending in a front-rear direction. The handle includes a grip part extending substantially in an up-down direction, and a battery-mounting part provided on a lower side of the grip part. An upper end portion of the handle is connected to a rear end portion of the body housing via an elastic member so as to be movable relative to the body housing. A lower end portion of the handle is connected to the rear end portion of the body housing so as to be rotatable relative to the body housing, around a rotation axis extending in a left-right direction. The rotation axis is located on a lower side of the battery-mounting part.
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公开(公告)号：US20190381646A1
公开(公告)日：2019-12-19
申请号：US16558439
申请日：2019-09-03
Applicant: MAKITA CORPORATION
Inventor： Kiyonobu YOSHIKANE , Hajime TAKEUCHI , Yoshiro TADA , Masanori FURUSAWA , Masao MIWA , Shinji ONODA , Yoshitaka MACHIDA
IPC: B25D16/00
Abstract: A power tool (100) comprises a motor (110) operably driving a tool bit (119), a tool body (101) housing the motor (110), a handle (109) coupled to the tool body (101), and at least two battery mount parts (160A, 160B) defined on the handle (109) and/or the tool body (101). Each of the battery mount parts (160A, 160B) comprises a battery engaging part (161) configured to detachably engage with battery packs (170A, 170B) by sliding the battery packs (170A, 170B) relative to the battery engaging part (161) in a direction perpendicular to the longitudinal direction of the tool bit (119).
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Patent Agency Ranking
公开(公告)号：US20180015602A1
公开(公告)日：2018-01-18
申请号：US15645644
申请日：2017-07-10
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA
Abstract: An impact tool includes a tool body, a tool holder, a cylindrical member, a reciprocating member, a motor, a first rotary body, a second rotary body, a swinging member, and clutch mechanisms. The clutch mechanisms are disposed between the first rotary body and the second rotary body on a power transmission path from the motor to the swinging member. The tool holder and the cylindrical member move together as a movable unit with respect to the tool body between a front end position and a separate position, according to a pressing force applied to the tool holder. The clutch mechanisms are each configured to start transmission of the first rotary body to the second rotary body while the movable unit moves from the front end position to the separate position and to interrupt transmission while the movable unit moves from the separate position to the front end position.
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公开(公告)号：US20150372633A1
公开(公告)日：2015-12-24
申请号：US14744721
申请日：2015-06-19
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Yoshitaka ICHIKAWA
CPC classification number: H02P29/20 , B23D51/16 , B23D59/001 , B25D11/00 , B25D16/00 , B25D16/006 , B25D2250/201 , B25D2250/221 , H02P7/18
Abstract: A hammer drill (100) comprises an electric motor (110), a piston (127) as a driving member and a controller (199) which controls and drives the electric motor (110). The piston (127) is reciprocated by rotation of the electric motor (110) and thereby a hammer bit (119) is driven in its longitudinal direction. The hammer bit (119) is moved forward in response to a forward movement stroke of the piston (127) and thereby a hammering operation is performed by the hammer bit (119). The controller (199) sets a duty ratio of a driving pulse signal which drives the electric motor (110) in the forward movement stroke of the piston (127) to be larger in order to prevent a reduction of a rotation speed of the electric motor (110) due to a load applied on the electric motor (110) during the forward movement stroke of the piston (127).
Abstract translation: 锤钻（100）包括电动机（110），作为驱动构件的活塞（127）和控制和驱动电动机（110）的控制器（199）。 活塞（127）通过电动机（110）的旋转而往复运动，从而使锤头（119）在其长度方向上被驱动。 响应于活塞（127）的向前移动行程，锤钻头（119）向前移动，从而通过锤钻头（119）执行锤击操作。 控制器（199）将活塞（127）的前进行程中驱动电动机（110）的驱动脉冲信号的占空比设定得较大，以防止电动机的转速降低 （110）在活塞（127）的向前移动行程期间由于施加在电动机（110）上的负载而产生。
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公开(公告)号：US20150144368A1
公开(公告)日：2015-05-28
申请号：US14554347
申请日：2014-11-26
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA
Abstract: A hammer drill includes a main body which houses a driving motor having a brush and a brush holder unit which holds the brush and switches a position of the brush, and a main handle which is movable to the main body. Further, a coil spring which biases the handle is provided. In a state that the coil spring biases the handle, the handle is moved against the main body in a longitudinal direction of a hammer bit and vibration transmission from the main body to the handle is prevented. Further, interference of a lever of the brush holder unit and the handle is prevented by a part of an opening formed on the handle.
Abstract translation: 锤钻包括：主体，其容纳具有刷子的驱动马达和夹持刷子并切换刷子位置的刷夹单元以及可移动到主体的主把手。 此外，设置有偏置手柄的螺旋弹簧。 在螺旋弹簧偏压手柄的状态下，手柄沿锤头的长度方向抵靠主体移动，并且防止从主体到手柄的振动传递。 此外，通过形成在手柄上的开口的一部分来防止电刷架单元的手柄和手柄的干涉。
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公开(公告)号：US20140352114A1
公开(公告)日：2014-12-04
申请号：US14287818
申请日：2014-05-27
Applicant: MAKITA CORPORATION
Inventor： Kiyonobu YOSHIKANE , Yoshitaka MACHIDA
IPC: B25F5/02
CPC classification number: B25F5/02 , B25D17/04 , B25D17/043 , B25F5/006 , B25F5/026 , B25G1/01 , Y10T16/4713
Abstract: An effective technique for increasing performance of an auxiliary handle which is attached to a power tool is provided. The auxiliary handle has a grip part, a grip holding part, a mounting part and a support part. The grip holding part is disposed between the grip part and the support part in a longitudinal direction of the auxiliary handle. When the auxiliary handle is attached to a power tool body, the grip part and the grip holding part are held so as to be movable with respect to the mounting part with the support part as a fulcrum.
Abstract translation: 提供了一种用于增加附接到电动工具的辅助手柄的性能的有效技术。 辅助手柄具有握持部，手柄保持部，安装部和支撑部。 把手保持部在辅助把手的长度方向上配置在把持部和支撑部之间。 当辅助手柄附接到电动工具主体时，把持部和手柄保持部被保持成能够以支撑部为支点相对于安装部移动。
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公开(公告)号：US20240149419A1
公开(公告)日：2024-05-09
申请号：US18380429
申请日：2023-10-16
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Yusuke TAKANO , Makoto CHIKARAISHI
CPC classification number: B25D11/064 , B25D11/04 , B25D17/20 , B25F5/006 , B25D2211/003 , B25D2217/0076 , B25D2250/005 , B25D2250/121 , B25D2250/365 , B25D2250/375
Abstract: A reciprocating tool includes a motor, a motion converting mechanism, a body housing, an inner housing, a support body, and a counterweight. The motion converting mechanism is operably coupled to a motor shaft and is configured to convert rotation into a linear reciprocating motion along a driving axis. The inner housing is within the body housing and houses at least a portion of the motion converting mechanism. The support body is originally separate from the inner housing and is attached to the inner housing in the body housing. The counterweight is operably coupled to the motion converting mechanism and is configured to be driven by the motion converting mechanism. The counterweight is supported by the support body to be pivotable around a pivot axis that extends in a direction orthogonal to the driving axis. At least a portion of the counterweight is housed in the inner housing.
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