公开(公告)号：US20230366536A1

公开(公告)日：2023-11-16

申请号：US18303720

申请日：2023-04-20

Applicant: MAKITA CORPORATION

Inventor： Akihiro HOZUMI ,  Makoto CHIKARAISHI

IPC: F21V33/00 ,  B25F5/00 ,  B25F5/02 ,  F21V9/32 ,  F21V23/00

CPC classification number: F21V33/0084 ,  B25F5/001 ,  B25F5/02 ,  F21V9/32 ,  F21V23/002 ,  B25B21/02

Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate including a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an outer cylindrical portion disposed radially outside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. An opening is provided in a lower portion of the outer cylindrical portion.

公开(公告)号：US20220110273A1

公开(公告)日：2022-04-14

申请号：US17497601

申请日：2021-10-08

Applicant: MAKITA CORPORATION

Inventor： Akihiro HOZUMI

IPC: A01G20/47 ,  A01D34/90 ,  F16M13/04 ,  A47L5/36

Abstract: A job-site gear in one aspect of the present disclosure includes a circuit board, at least one electronic component, and a resin member. A first surface of the circuit board includes a first area, a second area, and a third area. The third area is located in a boundary between the first area and the second area. A second surface of the circuit board includes a fourth area, a fifth area, and a sixth area located behind the first area, the second area, and the third area, respectively. The third area and the sixth area include at least one slit penetrating through the circuit board. The resin member is integrally molded so as to (i) penetrate through the at least one slit and (ii) cover the first area, the fourth area, and a part of the at least one electronic component on the first area.

公开(公告)号：US20240058937A1

公开(公告)日：2024-02-22

申请号：US18219442

申请日：2023-07-07

Applicant: MAKITA CORPORATION

Inventor： Makoto CHIKARAISHI ,  Akihiro HOZUMI

IPC: B25F5/02 ,  F21V11/16

CPC classification number: B25F5/02 ,  F21V11/16 ,  B25B23/18

Abstract: An electric work machine avoids lowering the visibility of a workpiece by an operator. An electric work machine includes a motor, an output unit operable with a rotational force from the motor, a light emitter at least partially surrounding the output unit, an optical member including an outer cylinder located radially outward from the light emitter, and a light transmitter located frontward from the light emitter to allow light emitted from the light emitter to pass through, and a light shield located radially outward from the outer cylinder.

公开(公告)号：US20230366535A1

公开(公告)日：2023-11-16

申请号：US18295868

申请日：2023-04-05

Applicant: MAKITA CORPORATION

Inventor： Makoto CHIKARAISHI ,  Akihiro HOZUMI ,  Yutaka OGISO

IPC: B23Q17/24 ,  B25F5/00 ,  B25B21/02 ,  B25B23/18 ,  F21V33/00 ,  F21V19/00 ,  F21V23/04 ,  H05B47/155 ,  H05B47/105

CPC classification number: B23Q17/2404 ,  B25F5/001 ,  B25B21/02 ,  B25B23/18 ,  F21V33/0084 ,  F21V19/0015 ,  F21V23/0414 ,  H05B47/155 ,  H05B47/105

Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate having a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an inner cylindrical portion disposed radially inside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. The inner cylindrical portion includes a cover slope that totally reflects light from the LED chip forward.

公开(公告)号：US20240175571A1

公开(公告)日：2024-05-30

申请号：US18435320

申请日：2024-02-07

Applicant: MAKITA CORPORATION

Inventor： Makoto CHIKARAISHI ,  Akihiro HOZUMI ,  Yutaka OGISO

IPC: F21V33/00 ,  B25B21/02 ,  B25B23/18 ,  B25F5/00 ,  H05B47/105 ,  H05B47/155

CPC classification number: F21V33/0084 ,  B25B21/02 ,  B25B23/18 ,  B25F5/001 ,  H05B47/105 ,  H05B47/155

Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate having a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an inner cylindrical portion disposed radially inside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. The inner cylindrical portion includes a cover slope that totally reflects light from the LED chip forward.

公开(公告)号：US20230364756A1

公开(公告)日：2023-11-16

申请号：US18303616

申请日：2023-04-20

Applicant: MAKITA CORPORATION

Inventor： Akihiro HOZUMI ,  Makoto CHIKARAISHI ,  Kazunori KINOSHITA

IPC: B25B23/18 ,  B25B21/02 ,  B25F5/00 ,  F21V33/00 ,  F21V29/503 ,  F21V29/70

CPC classification number: B25B23/18 ,  B25B21/02 ,  B25F5/008 ,  B25F5/001 ,  F21V33/0084 ,  F21V29/503 ,  F21V29/70 ,  F21Y2115/10

Abstract: A power tool includes a motor, an output shaft that is rotated by a rotational force of the motor, a chip-on-board light emitting diode disposed around the output shaft, and a white translucent optical member including a light refraction portion that refracts light emitted from the chip-on-board light emitting diode. In at least one cross section parallel to and passing through a rotation axis of the output shaft, a shape of the light refraction portion is line-symmetric with respect to the rotation axis.

公开(公告)号：US20220388134A1

公开(公告)日：2022-12-08

申请号：US17663697

申请日：2022-05-17

Applicant: MAKITA CORPORATION

Inventor： Akihiro HOZUMI

IPC: B25B23/18 ,  F21V19/00 ,  F21V5/04

Abstract: A power tool includes: a motor; an output part configured to be rotated around a rotational axis in response to energization of the motor; a plurality of lights disposed spaced apart around the output part; and an optical member having a refractive surface that refracts, radially outward of (away from) the rotational axis, illumination light emitted from a light-emitting surface of one of the lights.

公开(公告)号：US20220281048A1

公开(公告)日：2022-09-08

申请号：US17666210

申请日：2022-02-07

Applicant: MAKITA CORPORATION

Inventor： Hiroto KOREKAWA ,  Akihiro HOZUMI ,  Toshiyuki KANI

IPC: B23Q17/24 ,  B23D45/04

Abstract: An illuminator that emits light from a radially outer portion of the cutting tool toward the cutting tool includes a first light source and a second light source, and a first lens and a second lens. The first lens has a first emission surface including a first outermost portion located farthest and at a first distance from a first center axis including a first light source center of the first light source and perpendicular to the first light source. The second lens has a second emission surface including a second outermost portion located farthest and at a second distance from a second center axis including a second light source center of the second light source and perpendicular to the second light source. A distance between the first center axis and the second center axis is shorter than a sum of the first distance and the second distance.