# US 2026/0066735 A1 · Electric work machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0066735 A1 - Document ID: US20260066735A1 - Status: Published application - Kind: A1 - Application number: 19/310,550 - Filed: 2025-08-26 - Published: 2026-03-05 - Earliest claimed: 2024-08-28 - Assignees: Makita Corporation - Applicants: Makita Corporation - Inventors: Fuminari FUJII - Web page: https://patentgrep.com/patent/US20260066735A1 ## CPC - H02K 3/522: {for generally annular cores with salient poles} - H02K 3/28: Layout of windings or of connections between windings (windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32) - H02K 7/145: {Hand-held machine tool} - H02K 9/06: with fans or impellers driven by the machine shaft - H02K 11/215: Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements - H02K 21/16: having annular armature cores with salient poles (with homopolar co-operation H02K21/20) - B25F 5/02: Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} - H02K 2203/09: Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)} ## Abstract One aspect of the present disclosure provides an electric work machine with a brushless DC motor. A stator of the brushless DC motor includes a conductive member stacked on a yoke of the stator via an insulator of the stator in an axial direction of a rotation axis of the brushless DC motor. A first connector in the conductive member is aligned with a second connector in the conductive member across the axial direction. The first connector and the second connector overlap an axially extended region of coils on the stator, when viewed from a direction perpendicular to the axial direction. The first connector and the second connector are coupled respectively to a first end and a second end of at least one magnetic wire of the coils. ## Claims ### Claim 1 An electric work machine comprising: a brushless DC motor including: a rotor configured to rotate about a rotation axis; and a stator surrounding the rotor, the stator including: a stator core including a yoke surrounding the rotor and teeth protruding radially inward from the yoke; an insulator covering at least a portion of the stator core; coils formed from at least one magnet wire wound around the teeth via the insulator; and a conductive member including: a first connector coupled to a first end of one of the at least one magnet wire; and a second connector coupled to a second end of the one of the at least one magnet wire, the conductive member being stacked on the yoke via the insulator in an axial direction of the rotation axis, the first connector being offset from the second connector in a circumferential direction of the rotation axis but aligned with the second connector across the axial direction, and the first connector and the second connector overlapping an axially extended region of the coils, when viewed from a direction perpendicular to the axial direction. ### Claim 2 (depends on 1) The electric work machine according to claim 1, wherein: the first connector and the second connector are each formed of a plate member that is bent such that its cross section has a U-shape, and a first extension direction connecting an open end and a closed end of the U-shape is arranged parallel to the axial direction; the first connector is coupled to the first end arranged in an inside of the U-shaped; and the second connector is coupled to the second end arranged in the inside of the U-shape. ### Claim 3 (depends on 1) The electric work machine according to claim 1, wherein the first connector and the second connector are arranged such that a gap between the first connector and the second connector in the circumferential direction is larger than or equal to a width of one of the teeth in the circumferential direction. ### Claim 4 (depends on 1) The electric work machine according to claim 1, wherein the first connector and the second connector are arranged such that a gap between the first connector and the second connector in the circumferential direction is smaller than a width of one of the teeth in the circumferential direction. ### Claim 5 (depends on 1) The electric work machine according to claim 1, wherein the at least one magnetic wire is a single magnetic wire. ### Claim 6 (depends on 1) The electric work machine according to claim 1, wherein the at least one magnet wire is two or more but a smaller number of magnetic wires than the coils. ### Claim 7 (depends on 1) The electric work machine according to claim 1, further comprising a rotational position sensor configured to detect a rotational position of the rotor, wherein the rotational position sensor is arranged on the stator core opposite to the conductive member in the axial direction. ### Claim 8 (depends on 1) The electric work machine according to claim 1, wherein the first connector and the second connector overlap the stator core, as viewed from the axial direction. ### Claim 9 (depends on 1) The electric work machine according to claim 1, wherein the conductive member electrically couples different two of the coils to each other. ### Claim 10 (depends on 1) The electric work machine according to claim 1, wherein the coils include a multiple of three coils. ### Claim 11 (depends on 10) The electric work machine according to claim 10, wherein: the rotor includes eight magnetic poles; and the stator includes six slots. ### Claim 12 (depends on 1) The electric work machine according to claim 1, wherein the conductive member is directly or indirectly in contact with the insulator. ### Claim 13 (depends on 1) The electric work machine according to claim 1, wherein the conductive member further includes a power receiver configured to receive electric power for the coils. ### Claim 14 (depends on 1) The electric work machine according to claim 1, further comprising a housing accommodating the brushless DC motor therein.