# US 2014/0191601 A1 · Geared motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191601 A1 - Document ID: US20140191601A1 - Status: Published application - Kind: A1 - Application number: 14/232,430 - Filed: 2012-07-05 - Published: 2014-07-10 - Earliest claimed: 2011-07-22 - Assignees: Matuschek Messtechnik GmbH - Inventors: Elmar Lange; Philipp Matuschek - Web page: https://patentgrep.com/patent/US20140191601A1 ## CPC - H02K 7/116: with gears - Y02T 10/64: Electric machine technologies in electromobility - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A geared motor has a rotor, a stator which surrounds the rotor, and a gear mechanism with gear wheels. According to the described system, the gear wheels of the gear mechanism are arranged at least partially within the rotor. The geared motor may be provided with a switched reluctance motor as the electric drive, such that it can be used in an optimum manner for driving electric vehicles. ## Claims ### Claim 1 A geared motor, comprising: a rotor; a stator that surrounds the rotor; and a gear mechanism having gear wheels, wherein the gear wheels of the gear mechanism are arranged at least in part in the rotor. ### Claim 2 (depends on 1) The geared motor as claimed in claim 1, further comprising: a switched reluctance motor. ### Claim 3 (depends on 1) The geared motor as claimed in claim 1, further comprising at least one of the following features: the rotor includes a number of poles that are arranged in an annular manner; the poles of the rotor are formed by a closed ring that is embodied from lamellae that are connected to one another; the closed ring surrounds a hub; the closed ring is connected to the hub in a positive locking manner; or the gear wheels of the gear mechanism are mounted in at least one of: the hub or the closed ring. ### Claim 4 (depends on 1) The geared motor as claimed in claim 1, wherein the gear mechanism includes at least one differential gear. ### Claim 5 (depends on 4) The geared motor as claimed in claim 4, wherein the rotor includes recesses, and wherein compensating gear wheels of the differential gear are mounted in the recesses. ### Claim 6 (depends on 5) The geared motor as claimed in claim 5, wherein the recesses are arranged in a hub. ### Claim 7 (depends on 5) The geared motor as claimed in claim 5, wherein the rotor includes at least one pair of recesses that are adjacent to one another, and wherein a pair of compensating gear wheels, are mounted in the recesses, and wherein the pair of compensating gear wheels mesh with one another at a first axial position and at a second axial position and are coupled in each case to an output. ### Claim 8 (depends on 7) The geared motor as claimed in claim 7, further comprising: a hub composed of two disks, wherein a largest part of a first compensating gear wheel of the pair of compensating gear wheels is received in the first disk and a largest part of a second compensating gear wheel (2′) of the pair of compensating gear wheels is received in the second disk. ### Claim 9 (depends on 8) The geared motor as claimed in claim 8, wherein the hub is manufactured from a light alloy. ### Claim 10 (depends on 1) The geared motor as claimed in claim 1, wherein the gear mechanism includes at least one reduction gear. ### Claim at position 11 11-15. (canceled) ### Claim 16 (depends on 10) The geared motor as claimed in claim 10, wherein the gear mechanism includes a planetary gear mechanism. ### Claim 17 (depends on 16) The geared motor as claimed in claim 16, wherein the planetary gear mechanism includes a sun gear wheel, and wherein the gear wheels are compensating gear wheels that mesh with the sun gear wheel. ### Claim 18 (depends on 17) The geared motor as claimed in claim 17, wherein the sun gear wheel includes a groove that extends in a circumferential direction for receiving a sealing arrangement. ### Claim 19 (depends on 16) The geared motor as claimed in claim 16, wherein the planetary gear mechanism includes a planetary carrier having planet gear wheels, and wherein the planetary carrier is coupled to an output shaft. ### Claim 20 (depends on 19) The geared motor as claimed in claim 19, wherein the planetary gear mechanism includes a ring gear wheel that is connected in a rotably-fixed manner to an exterior housing that is fixedly connected to the stator. ### Claim 21 (depends on 16) The geared motor as claimed in any claim 16, wherein the planetary gear mechanism is a first planetary gear mechanism that is provided on two front faces of the rotor, wherein a first compensating gear wheel of a pair meshes with a sun gear wheel of the first planetary gear mechanism, and wherein a second compensating gear wheel of a pair meshes with a sun gear wheel of a second planetary gear mechanism. ### Claim 22 (depends on 1) The geared motor as claimed in claim 1, wherein the rotor includes a number of poles that are arranged in an annular manner, wherein the poles of the rotor are formed by a closed ring that is embodied from lamellae that are connected to one another, wherein the closed ring surrounds a hub and is connected to the hub in a positive locking manner, and wherein the gear wheels of the gear mechanism are mounted in at least one of: the hub or the closed ring.