# US 11,898,631 B2 · Transmission for vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,631 B2 - Document ID: US11898631B2 - Status: Granted - Kind: B2 - Application number: 17/564,910 - Filed: 2021-12-29 - Published: 2022-06-30 - Granted: 2024-02-13 - Earliest claimed: 2020-12-31 - Assignees: SL Corporation - Applicants: SL Corporation - Inventors: Mi Rae Do; Sung Jin Kim; Min Soo Kim; Jae Seung Hong; Gwang Sun Kim - Web page: https://patentgrep.com/patent/US11898631B2 ## CPC - F16H 59/08: Range selector apparatus - H02K 21/16: having annular armature cores with salient poles (with homopolar co-operation H02K21/20) - F16H 59/10: comprising levers - F16H 59/105: {consisting of electrical switches or sensors} - F16H 61/36: with at least one movement being transmitted by a cable - H02K 1/27: Rotor cores with permanent magnets - H02K 7/1004: {with pulleys} - H02K 7/11: with dynamo-electric clutches - H02K 49/102: {Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact (magnetized gearings with physical contact F16H13/12, F16H49/005)} - H02K 1/2781: Magnets shaped to vary the mechanical air gap between the magnets and the stator - F16H: GEARING - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract A transmission for a vehicle includes a transmission unit for receiving a transmission command for a vehicle, a driving unit for generating a driving force for switching a posture of the transmission unit, and a control device for controlling the driving unit to switch the posture of the transmission unit based on whether a preset condition is satisfied. The driving unit includes a first stator for generating magnetic flux, a first rotor having a first inner permanent magnet and a second inner permanent magnet axially arranged at a predetermined spacing along a rotation axis, and configured to be rotated by the magnetic flux transferred to the first inner permanent magnet, an outer permanent magnet, and a second rotor configured to rotate along a magnetic force path between the second inner permanent magnet and the outer permanent magnet. ## Claims ### Claim 1 A transmission for a vehicle, comprising: a transmission unit for receiving a transmission command for a vehicle; a driving unit for generating a driving force for switching a posture of the transmission unit; and a controller configured to cause the driving unit to switch the posture of the transmission unit based on whether a preset condition is satisfied, wherein the driving unit comprises: a first stator for generating magnetic flux; a first rotor including a first inner permanent magnet and a second inner permanent magnet, wherein the first inner permanent magnet and the second inner permanent magnet are disposed axially with a predetermined axial spacing therebetween along a rotation axis, the first rotor being configured to be rotated by the magnetic flux transferred to the first inner permanent magnet; an outer permanent magnet provided in a number different from a number of the second inner permanent magnet; and a second rotor configured to rotate along a magnetic force path between the second inner permanent magnet and the outer permanent magnet at a number of revolutions per unit time that is different from a number of revolutions per unit time of the first rotor. ### Claim 2 (depends on 1) The transmission of claim 1, wherein the controller is configured to control the driving unit to cause the transmission unit to be switched to a parking position in response to a parking condition being satisfied. ### Claim 3 (depends on 1) The transmission of claim 1, wherein the control device controller is configured to control the driving unit to cause the transmission unit to be switched to a stow position in response to a stow condition being satisfied. ### Claim 4 (depends on 1) The transmission of claim 1, wherein, in response to the transmission unit being switched from a position corresponding to a first transmission stage to a position corresponding to a second transmission stage while a transmission condition is not satisfied, the controller is configured to control the driving unit to cause the transmission unit to be switched to the position corresponding to the first transmission stage. ### Claim 5 (depends on 1) The transmission of claim 1, wherein the second rotor comprises: a base; and a plurality of pole pieces, each of which extends in one direction from an edge of the base. ### Claim 6 (depends on 5) The transmission of claim 5, wherein the plurality of pole pieces are arranged between the second inner permanent magnet and the outer permanent magnet, and form the magnetic force path between the second inner permanent magnet and the outer permanent magnet. ### Claim 7 (depends on 1) The transmission of claim 1, wherein the second rotor rotates in a stepwise manner in response to a force greater than a magnetic force between the second inner permanent magnet and the outer permanent magnet being exerted on the second rotor. ### Claim 8 (depends on 7) The transmission of claim 7, wherein the second rotor rotates in the stepwise manner with an articulation having a distance between adjacent pole pieces or a distance between adjacent outer permanent magnets. ### Claim 9 (depends on 1) The transmission of claim 1, wherein the second rotor rotates in a stepwise manner to generate a sense of operation in the transmission unit in response to a force greater than a magnetic force between the second inner permanent magnet and the outer permanent magnet being exerted on the second rotor. ### Claim 10 (depends on 1) The transmission of claim 1, wherein the transmission unit and the driving unit exchange forces with each other via a driving force transferring unit. ### Claim 11 (depends on 10) The transmission of claim 10, wherein the driving force transferring unit includes a belt. ### Claim 12 (depends on 10) The transmission of claim 10, wherein the driving force transferring unit comprises: a wire; a driving pulley rotatable by a driving force of the driving unit, wherein the wire is wound around an outer circumferential surface of the driving pulley; and a driven pulley rotatable by switching the posture of the transmission unit, wherein a rotational force is exchanged between the driving pulley and the driven pulley via the wire. ### Claim 13 (depends on 12) The transmission of claim 12, wherein the driving force transferring unit further comprises a wire fixing unit for fixing the wire to the driven pulley, and wherein a tension of the wire is adjustable depending on a coupling depth of the wire fixing unit into the driven pulley. ### Claim 14 (depends on 13) The transmission of claim 13, wherein the wire fixing unit comprises a hollow lumen, through which the wire passes, wherein a wire fixing pin is fixedly coupled to the wire at an end of the wire that passes through the hollow lumen, and wherein the wire fixing unit is coupled to the driven pulley while pressing the wire fixing pin. ### Claim 15 (depends on 12) The transmission of claim 12, wherein a portion of the wire wound on the driving pulley includes a slip preventing pin fixedly coupled to the wire, and wherein the driving pulley includes a receiving groove for accommodating the slip preventing pin therein. ### Claim 16 (depends on 1) The transmission of claim 1, wherein the transmission unit and the driving unit are directly coupled to each other to exchange power. ### Claim 17 (depends on 16) The transmission of claim 16, wherein the transmission unit is directly coupled to a spindle of the driving unit. ### Claim 18 A transmission for a vehicle, comprising: a transmission unit for receiving a transmission command for a vehicle; and a driving unit for generating a driving force for switching a posture of the transmission unit based on whether a preset condition is satisfied, wherein the driving unit comprises: a first stator for generating magnetic flux; a first rotor including a first inner permanent magnet and a second inner permanent magnet axially arranged with a predetermined axial spacing therebetween along a rotation axis, and configured to be rotated by the magnetic flux transferred to the first inner permanent magnet; an outer permanent magnet provided in a number different from a number of the second inner permanent magnet; and a second rotor configured to rotate along a magnetic force path between the second inner permanent magnet and the outer permanent magnet at a number of revolutions per unit time that is different from a number of revolutions per unit time of the first rotor, wherein the driving force transferring unit comprises: a wire; a driving pulley rotatable by a driving force of the driving unit, wherein the wire is wound around an outer circumferential surface of the driving pulley; and a driven pulley rotatable by switching the posture of the transmission unit, and wherein a rotational force is exchanged between the driving pulley and the driven pulley via the wire. ### Claim 19 (depends on 18) The transmission of claim 18, wherein the driving force transferring unit further comprises a wire fixing unit for fixing the wire to the driven pulley, wherein a tension of the wire is adjustable depending on a coupling depth of the wire fixing unit into the driven pulley, wherein the wire fixing unit comprises a hollow lumen, through which the wire passes, wherein a wire fixing pin is fixedly coupled to the wire at an end of the wire that passes through the hollow lumen, and wherein the wire fixing unit is coupled to the driven pulley while pressing the wire fixing pin. ### Claim 20 (depends on 18) The transmission of claim 18, wherein a portion of the wire wound on the driving pulley includes a slip preventing pin fixedly coupled to the wire, and wherein the driving pulley includes a receiving groove for accommodating the slip preventing pin therein.