# US 2026/0088680 A1 · Electric unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0088680 A1 - Document ID: US20260088680A1 - Status: Published application - Kind: A1 - Application number: 19/325,046 - Filed: 2025-09-10 - Published: 2026-03-26 - Earliest claimed: 2024-09-20 - Assignees: Toyota Jidosha Kabushiki Kaisha - Applicants: Toyota Jidosha Kabushiki Kaisha - Inventors: Singo TOYAMA - Web page: https://patentgrep.com/patent/US20260088680A1 ## CPC - H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)} - H01R 9/22: Bases, e.g. strip, block, panel {(for printed circuits H01R12/50)} - H01R 9/2491: {Terminal blocks structurally associated with plugs or sockets} - H01R 2201/26: for vehicles - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## Abstract An electric unit may include a housing including a service hole and a terminal block housed in the housing. The housing may include a rib extending across an opening of the service hole. The terminal block may include a first electrical connection structure and a second electrical connection structure of a different type from the first electrical connection structure. At least a portion of the first electrical connection structure may be located to be exposed to an outside through the opening of the service hole. At least a portion of the second electrical connection structure is located behind the rib. ## Claims ### Claim 1 An electric unit comprising: a housing including a service hole; and a terminal block housed in the housing, wherein the housing comprises a rib extending across an opening of the service hole, the terminal block comprises: a first electrical connection structure; and a second electrical connection structure of a different type from the first electrical connection structure, at least a portion of the first electrical connection structure is located to be exposed to an outside through the opening of the service hole, and at least a portion of the second electrical connection structure is located behind the rib. ### Claim 2 (depends on 1) The electric unit according to claim 1, wherein the opening of the service hole extends along one direction when viewed in a direction perpendicular to an opening surface of the opening of the service hole, and the rib extends across the opening along a direction perpendicular to the one direction. ### Claim 3 (depends on 1) The electric unit according to claim 1, wherein at least the portion of the second electrical connection structure is located to overlap the rib when viewed in a direction perpendicular to an opening surface of the opening of the service hole. ### Claim 4 (depends on 1) The electric unit according to claim 1, wherein the housing further comprises a partition wall located between a first chamber and a second chamber, and the terminal block extends through the partition wall and is located in both of the first chamber and the second chamber. ### Claim 5 (depends on 4) The electric unit according to claim 4, wherein the first electrical connection structure electrically connects between a component located in the first chamber and a component located in the second chamber, the second electrical connection structure electrically connects between a component located in the first chamber and a component located in the second chamber, and a voltage delivered through the second electrical connection structure is lower than a voltage delivered through the first electrical connection structure. ### Claim 6 (depends on 5) The electric unit according to claim 5, wherein the first electrical connection structure electrically connects between conductor plates by fastening the conductor plates with a fastener, and the second electrical connection structure electrically connects between wire harnesses by connecting the wire harnesses with a relay connector. ### Claim 7 (depends on 1) The electric unit according to claim 1, further comprising: a motor housed in the housing; a sensor housed in the housing and configured to detect a state of the motor; a power control circuit housed in the housing; and a control board configured to control the power control circuit, wherein the motor and the power control circuit are electrically connected to each other via the first electrical connection structure, and the sensor and the control board are electrically connected to each other via the second electrical connection structure. ### Claim 8 (depends on 7) The electric unit according to claim 7, wherein the second electrical connection structure comprises a relay connector, the sensor is electrically connected to the relay connector via a first wire harness, and the control board is electrically connected to the relay connector via a second wire harness. ### Claim 9 (depends on 7) The electric unit according to claim 7, further comprising: a power control terminal housed in the housing and electrically connected to the power control circuit, wherein the power control terminal is fastened to the first electrical connection structure with a fastener, and a fastened portion between the power control terminal and the first electrical connection structure is located to be exposed to the outside through the opening of the service hole. ### Claim 10 (depends on 7) The electric unit according to claim 7, wherein the housing further comprises a partition wall located between a first chamber and a second chamber, and the terminal block extends through the partition wall and is located in both of the first chamber and the second chamber. ### Claim 11 (depends on 10) The electric unit according to claim 10, wherein the motor and the sensor are housed in the first chamber of the housing, and the power control circuit is housed in the second chamber of the housing. ### Claim 12 (depends on 11) The electric unit according to claim 11, wherein the first electrical connection structure is electrically connected to the power control circuit in the second chamber. ### Claim 13 (depends on 12) The electric unit according to claim 12, further comprising: a power control terminal housed in the housing and electrically connected to the power control circuit, wherein the first electrical connection structure comprises a conductor plate that extends in both of the first chamber and the second chamber and electrically connected to the motor, the power control terminal is fastened to the conductor plate of the first electrical connection structure with a fastener, and a fastened portion between the power control terminal and the conductor plate of the first electrical connection structure is located to be exposed to the outside through the opening of the service hole. ### Claim 14 (depends on 11) The electric unit according to claim 11, wherein the second electrical connection structure is electrically connected to the sensor in the first chamber and electrically connected to the control board in the second chamber.