公开(公告)号：US20230364762A1

公开(公告)日：2023-11-16

申请号：US18141718

申请日：2023-05-01

Applicant: MAKITA CORPORATION

Inventor： Norikazu BABA ,  Shun KURIKI ,  Kazusa FUKUDA ,  Masaya NAGAO

IPC: B25C1/04

CPC classification number: B25C1/047 ,  B25C1/06

Abstract: A driving tool includes a piston configured to move in a driving direction due to gas pressure, and a driver configured to move integrally with the piston to strike a fastener. The driver includes a plurality of rack teeth formed along a driving direction. The driving tool includes a wheel having a plurality of engaging portions to engage the plurality of rack teeth at its outer circumference. The driver is moved in a counter-driving direction as the wheel rotates. The plurality of engaging portions of the wheel includes at least one advancing/retracting engaging portion configured to move with respect to a shaft member of the wheel. The driver has a tooth groove between adjacent rack teeth of the plurality of rack teeth. One tooth groove is configured to receive the advancing/retracting engaging portion and has a depth deeper than at least one other tooth groove.

公开(公告)号：US20200298387A1

公开(公告)日：2020-09-24

申请号：US16757319

申请日：2018-10-03

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka AKIBA ,  Kazusa FUKUDA

IPC: B25C1/06 ,  B25C1/00

Abstract: A driving tool includes a tool body, a flywheel, a driver and a pressing mechanism. The pressing mechanism is disposed on a side opposite to the flywheel across the driver in a facing direction in which the flywheel and the driver face each other. The pressing mechanism includes a spring mechanism and a pressing roller. The spring mechanism includes a first spring part and a second spring part and is configured to be displaced along with forward movement of the driver. The pressing roller is configured to press the driver toward the flywheel in the facing direction by a biasing force of the spring mechanism in a process of the forward movement of the driver, to thereby enable transmission of the rotational energy to the driver. A spring constant of the whole spring mechanism varies according to an amount of displacement of the whole spring mechanism.

公开(公告)号：US20200276691A1

公开(公告)日：2020-09-03

申请号：US16759535

申请日：2018-10-23

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka AKIBA ,  Kazusa FUKUDA

IPC: B25C1/06 ,  B25C1/00

Abstract: A driving tool includes a tool body, a flywheel, a driver, a pressing mechanism and a return mechanism. The pressing mechanism includes a first biasing part and at least one roller. The at least one roller is supported to be rotatable around a second rotation axis extending in parallel to a first rotation axis of the flywheel and to be movable in an extending direction of the second rotation axis. The pressing mechanism is configured such that a position of the at least one roller relative to the driver changes in the extending direction of the second rotation axis between a nail-driving process and a return process, thereby making the at least one roller to be incapable of pressing the driver in the return process.A nailing machine includes a tool body, a flywheel (40), a driver (3), a pressing mechanism and a return mechanism. The pressing mechanism includes a spring mechanism and a pressing roller (87). The pressing roller (87) is supported to be rotatable around a rotation axis (A2) and movable in a left-right direction, and configured to press the driver (3) toward the flywheel (40) by a biasing force of the spring mechanism in a nail-driving process in which the driver (3) moves from an initial position to a nail-driving position, to thereby enable transmission of the rotational energy to the driver (3). The pressing mechanism is configured such that the position of the pressing roller (87) relative to the driver (3) changes in the left-right direction between the nail-driving process and a return process, thereby making it impossible for the pressing roller (87) to press the driver (3) in the return process.

公开(公告)号：US20230364761A1

公开(公告)日：2023-11-16

申请号：US18122795

申请日：2023-03-17

Applicant: MAKITA CORPORATION

Inventor： Norikazu BABA ,  Shun KURIKI ,  Kazusa FUKUDA ,  Masaya NAGAO

IPC: B25C1/04

CPC classification number: B25C1/047

Abstract: A preceding engaging portion preceding a last engaging portion has a smaller diameter or is positioned further inward than the last engaging portion. Because of this configuration, an engagement of the preceding engaging portion with respect to a last engaged portion becomes more easily disengageable in comparison to the last engaging portions. When the preceding engaging portion disengages from the last engaged portion, the driver moves downward to a standby position. Accordingly, an engagement of the engaging portions with the engaged portions can be properly corrected, such that the last engaging portion engages the last engaged portion at the standby position.

公开(公告)号：US20170125192A1

公开(公告)日：2017-05-04

申请号：US15264870

申请日：2016-09-14

Applicant: MAKITA CORPORATION

Inventor： Takamasa HANAI ,  Hikaru SUNABE ,  Satoshi NINAGAWA ,  Shin NAKAMURA ,  Masatoshi NAKAHAMA ,  Kazusa FUKUDA ,  Kenichi MIYATA

IPC: H01H25/00 ,  H01H21/00 ,  H01H9/06 ,  H01H9/20 ,  B24B23/02 ,  B25F5/02

CPC classification number: H01H25/00 ,  B24B23/028 ,  B25F5/00 ,  B25F5/02 ,  H01H9/06 ,  H01H9/20 ,  H01H21/00 ,  H01H2001/508

Abstract: A power tool (1) includes an electric motor (2) as a drive source and a start switch (20; 61) that starts the electric motor (2) and is lockable in an ON position in a lock-ON state. An electromagnetic actuator (30; 40; 50; 60) pushes out or pulls in an actuation pin (30a; 40a; 50a; 60a) with respect to a body of the electromagnetic actuator (30; 40; 50; 60) in response to cutting off of a supply of electrical current to the power tool (1). The pushed-out or pulled-in actuation pin, directly or indirectly, disengages the start switch (20; 61) from the lock-ON state and/or prevents the start switch (20; 61) from being shifted into the lock-ON state.

公开(公告)号：US20230364763A1

公开(公告)日：2023-11-16

申请号：US18304410

申请日：2023-04-21

Applicant: MAKITA CORPORATION

Inventor： Masaya NAGAO ,  Norikazu BABA ,  Shun KURIKI ,  Kazusa FUKUDA

IPC: B25C1/04 ,  B25C1/06

CPC classification number: B25C1/047 ,  B25C1/06

Abstract: An elastic member is disposed between an internal gear of a gear train and a gear housing. A force is applied to the gear train when a lift mechanism is activated. The force is received and absorbed by the elastic member, thereby reducing the amount of force received by the gear housing.

公开(公告)号：US20230129001A1

公开(公告)日：2023-04-27

申请号：US17951412

申请日：2022-09-23

Applicant: MAKITA CORPORATION

Inventor： Kazusa FUKUDA ,  Masaya NAGAO ,  Kiyonobu YOSHIKANE ,  Toshiro HIRAYAMA

IPC: B25C1/04

Abstract: A driving tool comprises a cylinder extending in an up-down direction and a piston that moves downward within the cylinder due to a compressed gas to drive a driving member. The driving tool further comprises a main body housing that houses the cylinder and a grip extending rearward from a rear surface of the main body housing. The driving tool further comprises an upper chamber that is provided above the cylinder and communicates with the cylinder. The driving tool further comprises an air chamber that extends downward from the upper chamber and that extends only in an area on a right or left side of the main body housing with respect to both an axis center of the cylinder and an axis center of the grip.