# US 10,871,206 B2 · Torque transmission device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,871,206 B2 - Document ID: US10871206B2 - Status: Granted - Kind: B2 - Application number: 15/946,040 - Filed: 2018-04-05 - Published: 2018-10-11 - Granted: 2020-12-22 - Earliest claimed: 2017-04-05 - Assignees: Borg-Warner Corporation - Applicants: BorgWarner Inc. - Inventors: Stefan Pastoors; Matthias Gerhard Veit - Web page: https://patentgrep.com/patent/US10871206B2 ## CPC - F16H 3/78: Special adaptation of synchronisation mechanisms to these gearings - F16D 7/027: {with multiple lamellae} - F16D 25/06: in which the fluid actuates a piston incorporated in, {i.e. rotating with} the clutch (F16D25/02 takes precedence) - F16D 25/082: {the line of action of the fluid-actuated members co-inciding with the axis of rotation} - F16D 25/10: Clutch systems with a plurality of fluid-actuated clutches (arrangements or mounting of clutches in vehicles B60K17/00) - F16H 3/54: one of the central gears being internally toothed and the other externally toothed - F16H 57/10: Braking arrangements - F16D 11/10: with clutching members movable only axially - F16D 13/38: with flat clutching surfaces, e.g. discs - F16D 23/04: with an additional friction clutch (synchro rings per se F16D23/025) - F16H 2200/2005: with one sets of orbital gears - F16H 2200/2064: using at least one positive clutch, e.g. dog clutch - F16H 2200/2094: using positive clutches, e.g. dog clutches - F16H: GEARING - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES ## Abstract The present invention relates to a torque transmission device (2) comprising a planetary gear train (22), which has a rotatable component (28), a stationary housing (18), and a clutch device (32) for selective coupling of the component (28) with the stationary housing (18). The clutch device (32) has a friction-locking first clutch (34) and a positive-locking second clutch (36), wherein the component (28) may be coupled to the stationary housing (18) via the first clutch (34) before a coupling by means of the second clutch (36). ## Claims ### Claim 1 A torque transmission device (2) comprising a planetary gear train (22), which has a rotatable component (28), a stationary housing (18), and a clutch device (32) for selective coupling of the component (28) with the stationary housing (18), characterized in that the clutch device (32) has a friction-locking first clutch (34) and a positive-locking second clutch (36), wherein the component (28) may be coupled to the stationary housing (18) via the first clutch (34) before a coupling by means of the second clutch (36), wherein the first and second clutches (34, 36) are actuatable via a common actuating element (58) or the first clutch (34) is actuatable via a first actuating element (72) and the second clutch (36) is actuatable via a second actuating element (74), wherein the common actuating element (58) is designed as a hydraulically drivable actuating piston or the first actuating element (72) and the second actuating element (74) are designed as hydraulically drivable actuating pistons (76, 78), and wherein a first pressure chamber (80) is assigned to the first actuating piston (76) and a second pressure chamber (82) is assigned to the second actuating piston (78), wherein the first pressure chamber (80) is delimited at least partially by the second actuating piston (78) and a reset force may be generated on the second actuating piston (78) by means of a hydraulic pressure within the first pressure chamber (80), or the second pressure chamber (82) is at least partially delimited by the first actuating piston (76) and a reset force on the first actuating piston (76) may be generated by means of a hydraulic pressure within the second pressure chamber (82). ### Claim 2 (depends on 1) The torque transmission device (2) according to claim 1, characterized in that the first clutch (34) and the second clutch (36) are independently or interdependently actuatable. ### Claim 3 (depends on 1) The torque transmission device (2) according to claim 1, characterized in that the first actuating piston (76) and the second actuating piston (78) are arranged radially nested, and/or aligned flush with one another in axial direction (4, 6), and/or the first actuating piston (76) and/or the second actuating piston (78) is designed as an annular piston. ### Claim 4 (depends on 1) The torque transmission device (2) according to claim 1, characterized in that a reset device is assigned to the common actuating element (58) or the first actuating element (72) and/or the second actuating element (74) to reset the same, wherein the reset device has at least one elastic reset element. ### Claim 5 (depends on 4) The torque transmission device (2) according to claim 4, characterized in that the at least one elastic reset element is a spring element. ### Claim 6 (depends on 1) The torque transmission device (2) according to claim 1, characterized in that the first clutch (34) is a disk clutch comprising a disk set (38), a first disk carrier (44) is connected rotationally fixedly to the component (28), and a second disk carrier (48) is connected rotationally fixedly to the housing (18), wherein the first disk carrier (44) has a first rotary spline (46) for first disks (40) of the disk set (38) and the second disk carrier (48) has a second rotary spline (50) for second disks (42) of the disk set (38). ### Claim 7 (depends on 6) The torque transmission device (2) according to claim 6, characterized in that the second clutch (36) has a movable coupling element (54) which may be brought into rotary driving engagement with the first or the second rotary spline (46; 50), and, is permanently in rotary driving engagement with the second or first rotary spline (50; 46), or is designed as one piece with the second actuating element (74) or the common actuating element (58). ### Claim 8 (depends on 7) The torque transmission device (2) according to claim 7, characterized in that the coupling element (54) is arranged between the first actuating element (72) and the disk set (38), wherein the first actuating element (72) extends to the disk set (38) through at least one window (92) in the coupling element (54), and the first actuating element (72) has multiple actuating fingers (90) extending through the at least one window (92) in the coupling element (54). ### Claim 9 (depends on 7) The torque transmission device (2) according to claim 7, characterized in that the coupling element (54) is connected rotationally fixedly to the second actuating element (74) or to the common actuating element (58). ### Claim 10 (depends on 9) The torque transmission device (2) according to claim 9, characterized in that the component (28) is coupled to the housing (18) via the coupling element (54) and the second or the common actuating element (74, 58). ### Claim 11 (depends on 1) The torque transmission device (2) according to claim 1, characterized in that the planetary gear train (22) has a sun gear (24), a ring gear (26), and a planet gear carrier (28) with at least one planet gear (30) which is in rotary driving engagement with the sun gear (24) and the ring gear (26), wherein the sun gear (24), the ring gear (26), or the planet gear carrier (28) forms the component (28). ### Claim 12 (depends on 11) The torque transmission device (2) according to claim 11, characterized in that a second component (26) is rotationally fixedly to the housing (18), wherein the second component (26) is formed by the ring gear (26). ### Claim 13 (depends on 1) The torque transmission device (2) according to claim 1, characterized in that the first actuating piston (76) has a piston working surface (84), on which hydraulic pressure may be applied, which is designed to be larger than a piston working surface (86) of the second actuating piston (78), on which hydraulic pressure may be applied. ### Claim 14 A torque transmission device (2) comprising a planetary gear train (22), which has a rotatable component (28), a stationary housing (18), and a clutch device (32) for selective coupling of the component (28) with the stationary housing (18), characterized in that the clutch device (32) has a friction-locking first clutch (34) and a positive-locking second clutch (36), wherein the component (28) may be coupled to the stationary housing (18) via the first clutch (34) before a coupling by means of the second clutch (36), wherein the first clutch (34) is a disk clutch comprising a disk set (38), a first disk carrier (44) is connected rotationally fixedly to the component (28), and a second disk carrier (48) is connected rotationally fixedly to the housing (18), wherein the first disk carrier (44) has a first rotary spline (46) for first disks (40) of the disk set (38) and the second disk carrier (48) has a second rotary spline (50) for second disks (42) of the disk set (38), and wherein the second clutch (36) has a movable coupling element (54) which may be brought into rotary driving engagement with the first or the second rotary spline (46; 50), and, is permanently in rotary driving engagement with the second or first rotary spline (50; 46), or is designed as one piece with the second actuating element (74) or the common actuating element (58). ### Claim 15 (depends on 14) The torque transmission device (2) according to claim 14, characterized in that the coupling element (54) is arranged between the first actuating element (72) and the disk set (38), wherein the first actuating element (72) extends to the disk set (38) through at least one window (92) in the coupling element (54), and the first actuating element (72) has multiple actuating fingers (90) extending through the at least one window (92) in the coupling element (54). ### Claim 16 (depends on 14) The torque transmission device (2) according to claim 14, characterized in that the coupling element (54) is connected rotationally fixedly to the second actuating element (74) or to the common actuating element (58). ### Claim 17 (depends on 16) The torque transmission device (2) according to claim 16, characterized in that the component (28) is coupled to the housing (18) via the coupling element (54) and the second or the common actuating element (74, 58). ### Claim 18 A torque transmission device (2) comprising a planetary gear train (22), which has a rotatable component (28), a stationary housing (18), and a clutch device (32) for selective coupling of the component (28) with the stationary housing (18), characterized in that the clutch device (32) has a friction-locking first clutch (34) and a positive-locking second clutch (36), wherein the component (28) may be coupled to the stationary housing (18) via the first clutch (34) before a coupling by means of the second clutch (36), wherein the planetary gear train (22) has a sun gear (24), a ring gear (26), and a planet gear carrier (28) with at least one planet gear (30) which is in rotary driving engagement with the sun gear (24) and the ring gear (26), wherein the sun gear (24), the ring gear (26), or the planet gear carrier (28) forms the component (28), and wherein a second component (26) is rotationally fixedly to the housing (18), wherein the second component (26) is formed by the ring gear (26).