# US 12,603,542 B2 · Rotating electric machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,542 B2 - Document ID: US12603542B2 - Status: Granted - Kind: B2 - Application number: 18/475,420 - Filed: 2023-09-27 - Published: 2024-04-04 - Granted: 2026-04-14 - Earliest claimed: 2022-09-30 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Shingo Tanaka - Web page: https://patentgrep.com/patent/US12603542B2 ## CPC - H02K 3/522: {for generally annular cores with salient poles} - H02K 5/22: Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes - H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)} - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract A rotating electric machine includes a motor case, a lead wire that supplies current to a coil in the motor case, a connection terminal including a first fixing portion at one end and a second fixing portion at the other end, the first fixing portion being fixed to the lead wire and the second fixing portion being fixed to a power supply cable, and a terminal box that accommodates the second fixing portion of the connection terminal. The terminal box is separable from the motor case. The motor case includes an opening from which the first fixing portion is exposed to outside. The connection terminal can be separated from the motor case together with the terminal box when the fixing of the first fixing portion is released. ## Claims ### Claim 1 A rotating electric machine comprising: a motor case configured to accommodate a rotor and a stator; a lead wire, said lead wire: connected to an end portion of a coil that is configured to generate a magnetic field for driving and is accommodated in the motor case; protruding from a bottom surface of the motor case, and configured to supply current to the coil; a connection terminal including a first fixing portion at one end and a second fixing portion at another end, the first fixing portion being fastened and fixed to the lead wire and the second fixing portion being fixed to a power supply cable; and a terminal box configured to accommodate the second fixing portion of the connection terminal, wherein the terminal box is configured to be separated from the motor case, the motor case includes: an extending portion that protrudes downward from the bottom surface and surrounds the lead wire, an opening that is formed on the extending portion and from which the first fixing portion is exposed to outside, and a lid that closes the opening, the first fixing portion releases fixing between the connection terminal and the lead wire through the opening, and the connection terminal is configured to be separated from the motor case together with the terminal box when fixing between the lead wire and the first fixing portion is released. ### Claim 2 (depends on 1) The rotating electric machine according to claim 1, wherein when an axial direction of the motor case is a vertical direction, the connection terminal and the terminal box are positioned on a bottom surface of the motor case. ### Claim 3 (depends on 2) The rotating electric machine according to claim 2, wherein the terminal box is disposed in a manner so that at least a part of the terminal box overlaps with a projection range where the motor case is projected in the axial direction. ### Claim 4 (depends on 1) The rotating electric machine according to claim 1, wherein the terminal box is connected to a side surface of the extending portion of the motor case. ### Claim 5 (depends on 4) The rotating electric machine according to claim 4, wherein the connection terminal includes a bent portion bent in a manner so that a position of the second fixing portion is closer to the motor case than a position of the first fixing portion is. ### Claim 6 (depends on 5) The rotating electric machine according to claim 5, wherein the power supply cable is a three-phase cable, the connection terminal includes three conductor portions in the terminal box, the second fixing portions of the three conductor portions are arranged side by side in a width direction in the terminal box, and the second fixing portions adjacent to each other have different heights in a vertical direction. ### Claim 7 (depends on 6) The rotating electric machine according to claim 6, wherein among the three conductor portions, the conductor portion positioned at a center in the width direction is further apart from the bottom surface of the motor case than other conductor portions are, and the terminal box includes an upper end wall that is recessed at the center in the width direction and a boss on the upper end wall at the center in the width direction. ### Claim 8 (depends on 5) The rotating electric machine according to claim 5, wherein the connection terminal includes a conductor portion and an insulating member covering the conductor portion, and the insulating member includes a lower edge portion extending beyond a contact surface between the lead wire and the conductor portion, so as to cover a lower portion of the lead wire.