公开(公告)号：US20240017382A1

公开(公告)日：2024-01-18

申请号：US18198875

申请日：2023-05-18

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA

IPC: B25B21/00 ,  B23Q5/20

CPC classification number: B25B21/00 ,  B23Q5/20

Abstract: A screwdriver allows a screwing operation and an unscrewing operation to be performed smoothly. A screwdriver includes a housing, a motor including a stator and a rotor, a spindle, a clutch assembly, and a spindle locking assembly. The spindle includes a rod to which a tip tool is attachable, and is supported by the housing in a manner movable between an advanced position and a retracted position in a front-rear direction. The spindle has a reception hole extending frontward from a rear end face of the spindle. The clutch assembly transmits a rotational force from the rotor to the spindle in response to the spindle moving to the retracted position during forward rotation of the rotor. The spindle locking assembly transmits a rotational force from the rotor to the spindle during reverse rotation of the rotor, and includes the reception hole, and a countershaft placed in the reception hole.

公开(公告)号：US20230191577A1

公开(公告)日：2023-06-22

申请号：US17988093

申请日：2022-11-16

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA

IPC: B25D11/06 ,  B25D11/10

CPC classification number: B25D11/064 ,  B25D11/10 ,  B25D17/04

Abstract: To reduce size increase, a power tool includes a motor, an output shaft located frontward from the motor, rotatable by the motor, and having an insertion hole extending rearward from a front end of the output shaft, a bearing supporting the output shaft in a rotatable manner, a locking member supported by the output shaft and movable to a locking position for locking a tip tool placed in the insertion hole and to an unlocking position for unlocking the tip tool, a bit sleeve surrounding the output shaft, and movable to a movement-restricting position for restricting radially outward movement of the locking member and to a movement-permitting position for permitting radially outward movement of the locking member, and an operable member operable to move the bit sleeve and at least partly overlapping the bearing in an axial direction.

公开(公告)号：US20220193791A1

公开(公告)日：2022-06-23

申请号：US17521493

申请日：2021-11-08

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA

IPC: B23B45/02 ,  B23B45/00

Abstract: A housing holding a stator has increased rigidity. A vibration driver drill includes a motor including a stator and a rotor rotatable relative to the stator, a gear case in front of the motor, a gear in the gear case to receive rotation of the rotor, an output shaft protruding frontward from the gear case to receive rotation from the gear, an integral cylindrical housing accommodating the motor and including a front portion with an opening and a rear portion closed, a gear case housing connected to the front portion of the integral cylindrical housing and including a right part and a left part and holding the gear case, and a grip housing extending downward from the gear case housing.

公开(公告)号：US20250010446A1

公开(公告)日：2025-01-09

申请号：US18891362

申请日：2024-09-20

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA

IPC: B25D16/00 ,  B25B21/02

Abstract: A reducer appropriately selects from three or more variable speeds to match multiple operational modes. An impact driver includes a motor, a reducer that reduces rotation from the motor to select from three or more variable speeds, a plurality of actuators to be actuated by the rotation reduced by the reducer, and a switcher that selects, from the plurality of actuators, a specific actuator to be actuated in a predetermined operational mode. The switcher causes the reducer to cooperate with the selected specific actuator and actuates the reducer at a predetermined variable speed of the three of more variable speeds corresponding to the predetermined operational mode of the selected specific actuator.

公开(公告)号：US20240326219A1

公开(公告)日：2024-10-03

申请号：US18613299

申请日：2024-03-22

Applicant: MAKITA CORPORATION

Inventor： Kazunori KINOSHITA ,  Takeshi KAMIYA

IPC: B25F5/00 ,  B25B21/02 ,  B25B23/00

CPC classification number: B25F5/001 ,  B25B21/02 ,  B25B23/0035

Abstract: An angle impact tool includes: a brushless motor having a stator and a rotor, which rotates around a first rotational axis relative to the stator; an impact mechanism, which is rotated by the rotor; an output shaft, which is impacted by the impact mechanism and rotates around a second rotational axis; a motor housing, which houses the brushless motor; and one or more battery-mounting parts, on which one or more battery packs is (are respectively) mounted. In a front-rear direction, which is orthogonal to the second rotational axis, the impact mechanism and the output shaft are disposed more forward than the brushless motor. The front-rear direction and the output shaft are orthogonal to each other. The maximum fastening torque of the output shaft is 500 N·m or more and less than 1,000 N·m.

公开(公告)号：US20230356382A1

公开(公告)日：2023-11-09

申请号：US17795398

申请日：2021-03-02

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA ,  Koji TAKAHAGI ,  Tomohiko IMAE ,  Jun UEDA ,  Yuta ARAKI ,  Hidenori NAGASAKA

IPC: B25F5/02

CPC classification number: B25F5/026

Abstract: A power tool receives a reaction force with an auxiliary handle attached to the power tool. An auxiliary handle attachable to a power tool includes a first arm, a second arm that fastens, together with the first arm, at least a part of the power tool located between the first arm and the second arm, a handle, a grip sensor that detects the handle being gripped with the first arm and the second arm fastening at least the part of the power tool in between, and a signal output unit that outputs, to the power tool, a grip signal indicating that the handle is gripped based on a detection signal from the grip sensor.

公开(公告)号：US20210138624A1

公开(公告)日：2021-05-13

申请号：US17065081

申请日：2020-10-07

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA

IPC: B25F5/00 ,  B25B21/02 ,  B23B45/02

Abstract: The drill includes a motor, a spindle rotatable with a rotational force transmitted from the motor, a clutch assembly that disables transmission of the rotational force to the spindle in response to a rotational load on the spindle reaching a release value and including an elastic member that adjusts the release value, and a change ring switchable from a clutch mode in which the clutch assembly is operable to a nonclutch mode in which the clutch assembly is inoperable in response to the change ring operated in a forward rotation direction. In the clutch mode, the elastic member elastically deforms to reduce the release value in response to the change ring operated in the forward rotation direction, and to increase the release value in response to the change ring operated in a backward rotation direction.

公开(公告)号：US20200147776A1

公开(公告)日：2020-05-14

申请号：US16416406

申请日：2019-05-20

Applicant: MAKITA CORPORATION

Inventor： Takeshi KAMIYA

IPC: B25D16/00

Abstract: An electric power tool includes a motor, a spindle, a first vibration cam, a housing, a second vibration cam, a vibration switching member, and a plurality of biasing members. The spindle is rotatable by the motor. The first vibration cam is fixed to the spindle. The first vibration cam is located inward of the housing. The second vibration cam is located inward of the housing. The second vibration cam is configured to be in friction with the first vibration cam. The vibration switching member switches between a rotatable condition and an unrotatable condition of the second vibration cam with respect to the housing. The plurality of biasing members bias the vibration switching member.

公开(公告)号：US20190168363A1

公开(公告)日：2019-06-06

申请号：US16171780

申请日：2018-10-26

Applicant: MAKITA CORPORATION

Inventor： Yuki ISHIZAKI ,  Takeshi KAMIYA

IPC: B25B23/04

Abstract: An autofeed attachment (4) for a screw-driving apparatus (2) includes a base casing (30), a feeder casing (32) slidably mounted on the base casing (30) and a wheel (72) rotatably mounted within the feeder casing (32). When rotated in a forward direction, the wheel (72) advances a screw strip (50), which has a plurality of screws (52) coupled by a connecting strip. A wheel forward-direction rotating mechanism (60, 64, 66, 68) rotates the wheel (72) in the forward direction and restricts rotation of the wheel (72) in a reverse direction opposite the forward direction. A wheel-release mechanism (70, 107, 117) releases the restriction placed on rotation of the wheel (72) in the reverse direction. The wheel forward-direction rotating mechanism and the wheel-release mechanism are disposed, at least partially, inside of the wheel (72) and/or the rotational axis of the wheel (72) intersects a release button (107) of the wheel-release mechanism.