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公开(公告)号：US20250058436A1
公开(公告)日：2025-02-20
申请号：US18907975
申请日：2024-10-07
Applicant: MAKITA CORPORATION
Inventor： Kazuma AOKI , Tomoro AOYAMA
IPC: B25B21/02
Abstract: An impact tool (1) includes: a motor (6) having a rotor (27) that is rotatable about a rotational axis (AX); a spindle (8) disposed forward of the stator and rotating when the rotor rotates; an anvil (10) having at least a portion disposed forward of the spindle and mounting a bit (300); a hammer (47), which rotatably impacts the anvil; and a housing (2), which has a motor-housing part (21) that houses the motor. The maximum tightening torque is 140 N·m or more. Overall length (La), which is the distance—in the front-rear direction parallel to the rotational axis—between a rear-end portion of the motor-housing part and a front-end portion of the anvil, is 100 mm or less. The hammer has a base portion, a front-side ring portion protruding forward from the base portion, and hammer projection portions protruding radially inward from the front ring portion.
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公开(公告)号：US20230398662A1
公开(公告)日：2023-12-14
申请号：US18139763
申请日：2023-04-26
Applicant: MAKITA CORPORATION
Inventor： Kazuma AOKI , Tomoro AOYAMA
IPC: B25B21/02
CPC classification number: B25B21/02
Abstract: An impact tool has less size increase. An impact tool includes a motor, a spindle including a spindle shaft and a flange, an anvil including an anvil shaft and an anvil projection, and a hammer including a base surrounding the spindle shaft, a front ring protruding frontward from an outer circumference of the base, and a hammer projection to strike the anvil projection in a rotation direction. The base has a groove at a boundary with the hammer projection.
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Patent Agency Ranking
公开(公告)号：US20230182270A1
公开(公告)日：2023-06-15
申请号：US18060103
申请日：2022-11-30
Applicant: MAKITA CORPORATION
Inventor： Tokuo HIRABAYASHI , Haruki TEJIMA , Kazuma AOKI , Kazunori KINOSHITA
Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer; a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
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公开(公告)号：US20230398665A1
公开(公告)日：2023-12-14
申请号：US18325313
申请日：2023-05-30
Applicant: MAKITA CORPORATION
Inventor： Kazuma AOKI , Tomoro AOYAMA
IPC: B25B21/02
CPC classification number: B25B21/02
Abstract: An impact tool (1) includes: a motor (6) having a rotor (27) that is rotatable about a rotational axis (AX); a spindle (8) disposed forward of the stator and rotating when the rotor rotates; an anvil (10) having at least a portion disposed forward of the spindle and mounting a bit (300); a hammer (47), which rotatably impacts the anvil; and a housing (2), which has a motor-housing part (21) that houses the motor. The maximum tightening torque is 140 N·m or more. Overall length (La), which is the distance—in the front-rear direction parallel to the rotational axis—between a rear-end portion of the motor-housing part and a front-end portion of the anvil, is 100 mm or less. Center height Hc, which is the distance in the up-down direction between the rotational axis and an upper-end portion of the motor-housing part, is 29 mm or less.
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公开(公告)号：US20230398663A1
公开(公告)日：2023-12-14
申请号：US18142176
申请日：2023-05-02
Applicant: MAKITA CORPORATION
Inventor： Kazuma AOKI , Tomoro AOYAMA
IPC: B25B21/02
CPC classification number: B25B21/02
Abstract: An impact tool has less size increase. An impact tool includes a motor, a spindle, an anvil including an anvil shaft and an anvil projection, a hammer including a hammer projection to strike the anvil projection in a rotation direction, a hammer case accommodating the hammer, an anvil bearing held in the hammer case and surrounding the anvil shaft, and a cup washer facing a front surface of the anvil projection. The cup washer includes an inner ring portion in contact with a rear end face of the anvil bearing, an outer ring portion surrounding the anvil bearing, and a connecting ring portion connecting an outer edge of the inner ring portion and an inner edge of the outer ring portion.
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公开(公告)号：US20240208013A1
公开(公告)日：2024-06-27
申请号：US18599282
申请日：2024-03-08
Applicant: MAKITA CORPORATION
Inventor： Tokuo HIRABAYASHI , Haruki TEJIMA , Kazuma AOKI , Kazunori KINOSHITA
Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer, a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
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公开(公告)号：US20230182269A1
公开(公告)日：2023-06-15
申请号：US18060094
申请日：2022-11-30
Applicant: MAKITA CORPORATION
Inventor： Tokuo HIRABAYASHI , Haruki TEJIMA , Kazuma AOKI , Kazunori KINOSHITA
Abstract: An impact tool includes: a brushless motor; a spindle, which is rotated by the brushless motor; a hammer, which is held on the spindle; an anvil, which is impacted in a rotational direction by the hammer; a polymer housing, which houses the brushless motor; a hammer case, which is connected to the polymer housing and houses the hammer and the spindle; and a light unit, which is held on the hammer case and comprises a plurality of light-emitting devices. The maximum tightening torque of the anvil is 1,000 N·m or more and 2,500 N·m or less.
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