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公开(公告)号：US20210114195A1
公开(公告)日：2021-04-22
申请号：US17072484
申请日：2020-10-16
Applicant: MAKITA CORPORATION
Inventor： Kiyonobu YOSHIKANE , Yoshitaka MACHIDA , Hitoshi IIDA , Kazuki NAKAGAWA
Abstract: A power tool, such as a rotary hammer, includes a housing, an output shaft for mounting a tool accessary and a motor having a motor shaft that generates a rotational output for rotating and linearly hammering the output shaft. The rotational output of the motor shaft is coupled to the output shaft via a driving mechanism that includes a hammer mechanism. An intervening member is axially movable relative to the motor shaft and is operably coupled between the motor shaft and the hammer mechanism. The hammer mechanism and the output shaft are supported by a movable support that is axially movable relative to the housing. Because the output shaft and the driving mechanism are movable relative to the motor and the housing, which preferably includes handle, via the intervening member and the movable support during hammering operations, vibration generated during hammering operations can be dampened before reaching the housing.
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公开(公告)号：US20220266433A1
公开(公告)日：2022-08-25
申请号：US17667889
申请日：2022-02-09
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Kazuki NAKAGAWA
IPC: B25D17/04
Abstract: The power tool includes: a handle; a biasing member for biasing the handle in a direction away from a final output shaft in the axial direction; at least one guiding member disposed between a housing and a first part of the handle so as to extend in the axial direction and configured to slidably guide relative movement between the handle and the housing; and at least one elastic member disposed at least one of between the at least one guiding member and the housing and between the at least one guiding member and the first part of the handle. The at least one guiding member is disposed so as to be movable relative to the housing or the handle in a crossing direction that crosses the axial direction by elastic deformation of the at least one elastic member in the crossing direction.
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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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Patent Agency Ranking
公开(公告)号：US20230415321A1
公开(公告)日：2023-12-28
申请号：US18201312
申请日：2023-05-24
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka MACHIDA , Taro HISANO , Kazuki NAKAGAWA
CPC classification number: B25D16/006 , B25D17/043 , B25D2211/061
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：US20230241752A1
公开(公告)日：2023-08-03
申请号：US18152883
申请日：2023-01-11
Applicant: MAKITA CORPORATION
Inventor： Masahiro MAEGAWA , Kiyonobu YOSHIKANE , Kazuki NAKAGAWA , Yuzuru NISHIO
CPC classification number: B25D17/24 , B25D17/04 , B25D2250/041 , B25D2250/095 , B25D2250/121
Abstract: A power tool having a hammer mechanism includes a first housing, a motor housed in the first housing, a second housing that at least partially covers the first housing, and a controller housed in the second housing. The second housing is coupled to the first housing via at least one elastic member to be movable relative to the first housing in a first direction that is parallel to the driving axis. The second housing has at least one opening for wiring. The at least one opening communicatively connects an inside and an outside of the second housing. At least one electric wire extends from the controller to the outside of the second housing through the at least one opening.
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公开(公告)号：US20230071871A1
公开(公告)日：2023-03-09
申请号：US17986369
申请日：2022-11-14
Applicant: MAKITA CORPORATION
Inventor： Kiyonobu YOSHIKANE , Yoshitaka MACHIDA , Hitoshi IIDA , Kazuki NAKAGAWA
Abstract: A power tool, such as a rotary hammer, includes a housing, an output shaft for mounting a tool accessary and a motor having a motor shaft that generates a rotational output for rotating and linearly hammering the output shaft. The rotational output of the motor shaft is coupled to the output shaft via a driving mechanism that includes a hammer mechanism. An intervening member is axially movable relative to the motor shaft and is operably coupled between the motor shaft and the hammer mechanism. The hammer mechanism and the output shaft are supported by a movable support that is axially movable relative to the housing. Because the output shaft and the driving mechanism are movable relative to the motor and the housing, which preferably includes handle, via the intervening member and the movable support during hammering operations, vibration generated during hammering operations can be dampened before reaching the housing.
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公开(公告)号：US20220410282A1
公开(公告)日：2022-12-29
申请号：US17752360
申请日：2022-05-24
Applicant: MAKITA CORPORATION
Inventor： Kiyonobu YOSHIKANE , Yoshitaka MACHIDA , Kazuki NAKAGAWA
Abstract: A power tool comprises a motor, a final output shaft, a tool body, a detection device, and a braking device. The motor has a motor body including a stator and a rotor, and a motor shaft extending from the rotor and being rotatable around a first rotational axis. The final output shaft is configured to be rotationally driven around a second rotational axis by torque transmitted from the motor shaft. The tool body houses the motor and the final output shaft. The detection device is configured to detect a locking state of the final output shaft. The braking device is configured to directly act on the motor shaft to brake the motor shaft in response to detection of the locking state.
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公开(公告)号：US20220266432A1
公开(公告)日：2022-08-25
申请号：US17668036
申请日：2022-02-09
Applicant: MAKITA CORPORATION
Inventor： Kiyonobu YOSHIKANE , Yoshitaka MACHIDA , Taro HISANO , Kazuki NAKAGAWA
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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