# US 2024/0204604 A1 · Multipart Rotor for an Electric Machine, Electric Machine, and Motor Vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0204604 A1 - Document ID: US20240204604A1 - Status: Published application - Kind: A1 - Application number: 18/286,146 - Filed: 2022-05-17 - Published: 2024-06-20 - Earliest claimed: 2021-06-17 - Assignees: Bayerische Motoren Werke Aktiengesellschaft - Applicants: Bayerische Motoren Werke Aktiengesellschaft - Inventors: Silko FEUSTEL; Jerome RAGOT; Yann TREMAUDANT - Web page: https://patentgrep.com/patent/US20240204604A1 ## CPC - H02K 3/527: {applicable to rotors only} - H02K 1/24: Rotor cores with salient poles {; Variable reluctance rotors} - H02K 2201/15: Sectional machines - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract A rotor includes a magnetic field-generating component for producing a rotor magnetic field and a rotor core for holding the component. The rotor core has an annular rotor yoke and at least two rotor poles which are arranged on the rotor yoke and are configured in multiple parts, and each of which has a rotor tooth integrally formed on the rotor yoke and a pole shoe that is separate from the rotor tooth for arranging the component on the corresponding rotor tooth. The pole shoes are pressed radially against the respective rotor tooth, and the rotor has auxiliary joining parts, each of which is configured to fix at least one pole shoe to the corresponding rotor tooth by a force-fitting connection and which are at least partly arranged in respective pole gaps between two rotor poles and are secured to the rotor yoke by at least one connection element. ## Claims ### Claim at position 1 -14. (canceled) ### Claim 15 A rotor for an electric machine of an electrically drivable motor vehicle, the rotor comprising: a magnetic field-generating component for configuring a rotor magnetic field; and a rotor core for holding the magnetic field-generating component, wherein: the rotor core has an annular rotor yoke and at least two rotor poles which are disposed on the rotor yoke, are configured in multiple parts and have in each case one rotor tooth which is configured integrally with the rotor yoke, and a pole shoe which is separate from the rotor tooth for disposing the magnetic field-generating component on the rotor tooth, each pole shoe is pressed radially against a respective rotor tooth, the rotor has auxiliary joining parts which are configured to fix each pole shoe to the respective rotor tooth by way of a force fit, the auxiliary joining parts are at least partially disposed in respective pole gaps between two rotor poles, and the auxiliary joining parts are fastened to the rotor yoke by at least one connecting element. ### Claim 16 (depends on 15) The rotor according to claim 15, wherein: the at least one connecting element is configured as at least one of a screw, a rivet or a bolt. ### Claim 17 (depends on 15) The rotor according to claim 15, wherein: each pole shoe has a circular-segmented cross section which is delimited by a chord and an arc, and sides of the pole shoes that are assigned to the chords are disposed on sides of the rotor teeth that lie radially opposite the rotor yoke. ### Claim 18 (depends on 15) The rotor according to claim 15, wherein: for each pole gap, the auxiliary joining parts are disposed to be distributed across an axial length of the rotor. ### Claim 19 (depends on 15) The rotor according to claim 15, wherein: each pole shoe is connected in a form-fitting manner to at least one of the auxiliary joining parts. ### Claim 20 (depends on 15) The rotor according to claim 15, wherein: each pole shoe is connected in a force-fitting manner to the respective rotor tooth by way of at least two of the auxiliary joining parts which are disposed in the two adjacent pole gaps, and each auxiliary joining part connects pole shoes of two neighboring rotor poles in a force-fitting manner to the respective rotor tooth. ### Claim 21 (depends on 20) The rotor according to claim 20, wherein: the auxiliary joining parts are configured in a manner of V-clamps; each of the auxiliary joining parts has two legs which are connected by an apex region, leg ends of the legs are disposed on two neighboring pole shoes, and the apex region is disposed on the rotor yoke and has at least one through-opening for the at least one connecting element. ### Claim 22 (depends on 21) The rotor according to claim 21, wherein: each pole shoe on two laterally opposite sides has one rebate, and the leg ends are configured as laterally angled leg portions which engage in a respective rebate. ### Claim 23 (depends on 15) The rotor according to claim 15, wherein: the magnetic field-generating component has rotor windings with pre-wound winding conductors which are pushed onto the rotor teeth. ### Claim 24 (depends on 23) The rotor according to claim 23, wherein: the winding conductors of the rotor windings are configured to be tape-shaped. ### Claim 25 (depends on 15) The rotor according to claim 15, wherein: the magnetic field-generating component has permanent magnets which are disposed on the rotor teeth. ### Claim 26 (depends on 25) The rotor according to claim 25, wherein: each of the rotor teeth on a side that faces the pole shoes has at least one depression in which is disposed at least one permanent magnet, and which, while configuring a respective receptacle space for the at least one permanent magnet, is closed by a respective pole shoe. ### Claim 27 (depends on 15) An electric machine for a motor vehicle, the electric machine comprising: a stator; and the rotor according to claim 15, wherein the rotor is mounted to be rotatable relative to the stator. ### Claim 28 (depends on 27) A motor vehicle comprising the electric machine according to claim 27.