公开(公告)号：US20180278071A1

公开(公告)日：2018-09-27

申请号：US15920888

申请日：2018-03-14

Applicant: MAKITA CORPORATION

Inventor： Junichi MURAKAMI ,  Masaya MIZUTANI ,  Hisakazu OKABAYASHI

IPC: H02J7/00 ,  H01M10/44

CPC classification number: H02J7/0045 ,  H01M10/441 ,  H01M10/443 ,  H02J7/0003 ,  H02J7/0013 ,  H02J7/0026

Abstract: A charger (5) includes connecting parts (31, 32), a main converter (83), charging paths (Cpa, Cpb), switching elements (SWa, SWb), and a charging-control part (200). A first battery (Ba) having a first mounting part (11) and a second battery (Bb) having a second, different mounting part (21) are respectively mountable on the connecting parts (31, 32). The charging paths (Cpa, Cpb) respectively connect the main converter (83) to the connecting parts (31, 32). The switching elements (SWa, SWb) respectively connect or disconnect the charging paths (Cpa, Cpb) to/from the main converter (83). The charging-control part (200) selects one of the batteries (Ba, Bb) as the charging target and sets the charging path, to which the charging target (Ba, Bb) is connected, to the connected state. Then, the charger (5) charges the charging target to a predetermined voltage using a charging current suited to the charging target.

公开(公告)号：US20240250374A1

公开(公告)日：2024-07-25

申请号：US18019154

申请日：2021-08-06

Applicant: MAKITA CORPORATION

Inventor： Junichi MURAKAMI

IPC: H01M50/296 ,  H01M10/46 ,  H02J7/00

CPC classification number: H01M50/296 ,  H01M10/46 ,  H02J7/0045

Abstract: An electrical apparatus to which a battery pack including a battery-side terminal is to be detachably attached is disclosed. The electrical apparatus includes: a body case comprising an upper wall having an opening and a bottom wall; and a terminal unit covering the opening from above and including an apparatus-side terminal corresponding to the battery-side terminal. A first rib is disposed at least partially around the opening and extends upward from an upper surface of the upper wall. When the electrical apparatus is viewed from above, the first rib overlaps the terminal unit.

公开(公告)号：US20230318329A1

公开(公告)日：2023-10-05

申请号：US18019121

申请日：2021-08-06

Applicant: MAKITA CORPORATION

Inventor： Junichi MURAKAMI ,  Hideyuki TAGA

IPC: H02J7/00 ,  H01M50/296 ,  H01M50/543

CPC classification number: H02J7/0045 ,  H01M50/296 ,  H01M50/543 ,  H01M50/247

Abstract: A battery pack includes a battery-side terminal and a housing. The housing includes a groove defined in a vicinity of the battery-side terminal. The electrical apparatus includes a body case; and a hook attached to the body case and configured to be engaged with the groove of the battery pack. The battery pack is fixed to the electrical apparatus by the hook being engaged with the groove.

公开(公告)号：US20200176834A1

公开(公告)日：2020-06-04

申请号：US16687770

申请日：2019-11-19

Applicant: MAKITA CORPORATION

Inventor： Junichi MURAKAMI ,  Hideyuki TAGA

IPC: H01M10/613 ,  H01M2/02 ,  H01M10/6235

Abstract: A battery pack may include a battery cell, a substrate provided with a plurality of terminals, and a case accommodating the battery cell and the substrate. The substrate may include a through hole disposed between the plurality of terminals. The case may include a vent hole disposed at a position facing the through hole of the substrate.

公开(公告)号：US20220271378A1

公开(公告)日：2022-08-25

申请号：US17583556

申请日：2022-01-25

Applicant: MAKITA CORPORATION

Inventor： Junichi MURAKAMI ,  Hideyuki TAGA

IPC: H01M50/244

Abstract: A battery pack disclosed herein is configured to be attached to a battery pack mount by moving the same downward with respect to the battery pack mount and be detached from the battery pack mount by moving the same upward with respect to the battery pack mount. The battery pack comprises a casing. The casing includes a first guide groove and a second guide groove on a side surface of the casing in a left-right direction, with the first and second guide grooves each extending upward from a lower end of the side surface. A length of the first guide groove in an up-down direction and a length of the second guide groove in the up-down direction are different.

公开(公告)号：US20200303933A1

公开(公告)日：2020-09-24

申请号：US16808025

申请日：2020-03-03

Applicant: MAKITA CORPORATION

Inventor： Junichi MURAKAMI ,  Junya YAMAGUCHI ,  Hideyuki TAGA

IPC: H02J7/00 ,  H01M10/44 ,  H01M2/10 ,  H01M2/30 ,  H01R13/62

Abstract: An electrical device may be provided with: a housing to which a battery pack is attached detachably by sliding the battery pack in a sliding direction; a battery connection terminal configured to be electrically connected to the battery pack attached to the housing; and a terminal cover configured to move between a protection position for protecting the battery connection terminal and an exposure position for exposing the battery connection terminal. The housing may include a cover rail extending along the sliding direction. The terminal cover may include: a cover body having a shape that at least partially covers the battery connection terminal; and a hook formed integrally with the cover body, and the hook is engaged with the cover rail so as to slide in the sliding direction.

公开(公告)号：US20230114444A1

公开(公告)日：2023-04-13

申请号：US17914219

申请日：2021-04-15

Applicant: MAKITA CORPORATION

Inventor： Shinya MIZUTANI ,  Junichi MURAKAMI

IPC: F04D29/42 ,  H02J7/00 ,  H05K7/20

Abstract: A charger may include: a casing including an air inlet and an air outlet; an inner wall extending from an inner surface of the casing and defining an accommodating space between the inner surface of the casing and the inner wall; and a centrifugal fan including an air feed port and disposed in the accommodating space. The air outlet may be disposed to face the air feed port. The air inlet may be disposed closer to the centrifugal fan than the inner wall is. In a direction of a rotation axis of the centrifugal fan, a width between the inner wall and the centrifugal fan may be less than or equal to 150% of a width of the centrifugal fan.

公开(公告)号：US20170346530A1

公开(公告)日：2017-11-30

申请号：US15593465

申请日：2017-05-12

Applicant: MAKITA CORPORATION

Inventor： Hironori OGURA ,  Junichi MURAKAMI

IPC: H04B5/00

CPC classification number: H04B5/0037 ,  H04B5/0031 ,  H04B5/0062

Abstract: An information communication apparatus in one aspect of the present disclosure comprises a controller and a proximity wireless communication device. The controller performs a control process including at least transmission and/or reception of information between the information communication apparatus and at least one information holding apparatus. The at least one information holding apparatus comprises a battery pack and/or a field electric apparatus. The proximity wireless communication device communicates the information via the proximity wireless communication with an operation apparatus different from the at least one information holding apparatus.