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公开(公告)号：US11904449B2
公开(公告)日：2024-02-20
申请号：US17366159
申请日：2021-07-02
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka Machida , Taro Hisano
CPC classification number: B25D17/24 , B25D16/006 , B25D2216/0084 , B25D2250/121 , B25D2250/201 , B25D2250/221 , B25D2250/265 , B25D2250/371
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：US12172281B2
公开(公告)日：2024-12-24
申请号：US18201312
申请日：2023-05-24
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：US11642769B2
公开(公告)日：2023-05-09
申请号：US17668036
申请日：2022-02-09
Applicant: MAKITA CORPORATION
Inventor： Kiyonobu Yoshikane , Yoshitaka Machida , Taro Hisano , Kazuki Nakagawa
CPC classification number: B25D16/00 , B25D17/24 , B25F5/02 , B25D17/00 , B25D2211/003 , B25D2211/006 , B25D2211/061 , B25D2211/068 , B25D2216/0023 , B25D2217/0073 , B25D2217/0076 , B25D2217/0092 , B25D2250/121 , B25D2250/245 , B25D2250/331 , B25F5/006
Abstract: A movable support at least partially supports a final output shaft and a driving mechanism, and is integrally movable relative to a housing in an axial direction of a driving axis. A biasing member biases the movable support toward a front side in the axial direction. A first guide shaft extends in the axial direction and slidably guides the movement of the movable support in the axial direction. At least one intermediate shaft rotates in response to rotation of a motor shaft and transmit power of the motor to the driving mechanism. At least one bearing supports an end portion of the at least one intermediate shaft is located in the front side in the axial direction. A single metal support is immovable relative to the housing and supports the at least one bearing. The single metal support has a first hole for partially receiving the first guide shaft.
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公开(公告)号：US20240326216A1
公开(公告)日：2024-10-03
申请号：US18422193
申请日：2024-01-25
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Taro Hisano
CPC classification number: B25D17/043 , B25D16/00
Abstract: An auxiliary handle for a work tool reduces vibrations transmitted to a grip. An auxiliary handle for a work tool is an auxiliary handle detachably attachable to the work tool. The auxiliary handle includes an attachment being elongated, elastically deformable, and windable around an outer circumference of the work tool, a threaded shaft including a basal portion connected to two ends of the attachment, a base being cylindrical and receiving the threaded shaft, a distal member being adjacent to a distal end of the base and receiving a distal end of the threaded shaft screwed into the distal member, and a grip being cylindrical and covering the base.
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公开(公告)号：US11084157B2
公开(公告)日：2021-08-10
申请号：US16298409
申请日：2019-03-11
Applicant: MAKITA CORPORATION
Inventor： Kiyonobu Yoshikane , Yoshitaka Machida , Taro Hisano , Hirokatsu Yamamoto
Abstract: A work tool includes a motor, a driving mechanism, a housing, a handle, a detecting mechanism and an elastic support part. The detecting mechanism is configured to detect information corresponding to an operating state of the work tool. The elastic support part supports the detecting mechanism so as to be movable relative to the housing in at least two of a front-rear direction, an up-down direction and a left-right direction. The elastic support part includes at least one elastic member disposed between the detecting mechanism and the housing. The elastic support part has respectively different spring constants in the at least two directions.
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Patent Agency Ranking
公开(公告)号：US11491598B2
公开(公告)日：2022-11-08
申请号：US16830455
申请日：2020-03-26
Applicant: MAKITA CORPORATION
Inventor： Hitoshi Iida , Yoshiro Tada , Hideki Tsuji , Taro Hisano
Abstract: A dust collecting system includes a power tool and a stationary dust collector. The power tool is configured to perform processing operation on a workpiece by driving a tool accessory. The stationary dust collector is configured to be placed separately from the power tool and to collect dust generated by the processing operation. The power tool includes a first motor and a driving mechanism configured to drive the tool accessory by power of the first motor. The dust collector includes a second motor and a fan configured to be rotationally driven by the second motor to generate air flow for collecting dust. The dust collecting system includes a control device configured to control a rotation speed of the second motor according to a driving state of the power tool.
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公开(公告)号：US11084158B2
公开(公告)日：2021-08-10
申请号：US16564103
申请日：2019-09-09
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：US12246430B2
公开(公告)日：2025-03-11
申请号：US18142628
申请日：2023-05-03
Applicant: MAKITA CORPORATION
Inventor： Naoto Ichikawa , Yoshitaka Machida , Taro Hisano
Abstract: A power tool including a vibration isolator can be downsized in a relative movement direction and reduce damage to wiring. A hammer drill includes a front housing including an output unit and a motor, a rear housing separate from the front housing and including a switch to be movable relative to the front housing in a front-rear direction, a vibration isolator located between the front housing and the rear housing and including a coil spring, a lead wire electrically connecting the motor and the switch, and a lead wire holder holding a middle portion of the lead wire in a lateral direction.
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公开(公告)号：US11845170B2
公开(公告)日：2023-12-19
申请号：US17892604
申请日：2022-08-22
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka Machida , Taro Hisano
CPC classification number: B25D17/26 , B25D16/006 , B25D2216/0084 , B25D2217/0096
Abstract: A power tool has a motor, a rotary shaft and a housing. The rotary shaft has a first end portion on a first direction side and a second end portion on a second direction side in an axial direction of the rotary shaft. The housing is configured to store a lubricant on the first direction side of the first end portion of the rotary shaft. The rotary shaft has a first hole and a second hole. The first hole extends in the axial direction and that has a first opening in the first end portion of the rotary shaft. The second hole extends in a direction crossing an axis of the rotary shaft, that communicates with the first hole. The second hole has a second opening in an outer peripheral surface of the rotary shaft. A spiral part is provided within the first hole.
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公开(公告)号：US11780070B2
公开(公告)日：2023-10-10
申请号：US17588810
申请日：2022-01-31
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka Machida , Hitoshi Iida , Taro Hisano
CPC classification number: B25F5/001 , B25D16/003 , B25D2250/165
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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