# US 2017/0254387 A1 · Torque transmission apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0254387 A1 - Document ID: US20170254387A1 - Status: Published application - Kind: A1 - Application number: 15/436,663 - Filed: 2017-02-17 - Published: 2017-09-07 - Earliest claimed: 2016-03-01 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Tomoya Okaji; Fumiya Nishii; Masaki Sagawa; Sota Miyahara - Web page: https://patentgrep.com/patent/US20170254387A1 ## CPC - F16F 15/12353: {Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations} - F16F 15/12366: {acting on multiple sets of springs} - F16H 45/02: with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) - F16H 2045/0226: {comprising two or more vibration dampers} - F16H 2045/0231: {arranged in series} - F16H 2045/0278: {comprising only two co-acting friction surfaces} - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION - F16H: GEARING ## Abstract A torque transmission apparatus including an intermediate member disposed in a power transmission path between a first rotor and second rotor; a first elastic member interposed between the first rotor and the intermediate member; a second elastic member interposed between the intermediate member and the second rotor; and an inertial body connected to the intermediate member through a third elastic member. The third elastic member is placed between the first elastic member and the second elastic member in an axial direction and between the first elastic member and the second elastic member in a radial direction. ## Claims ### Claim 1 A torque transmission apparatus for transmitting a torque from a first rotor rotating around an axial line to a second rotor, comprising: an intermediate member disposed in a power transmission path between the first rotor and second rotor; a first elastic member interposed between the first rotor and the intermediate member; a second elastic member interposed between the intermediate member and the second rotor; a third elastic member; and an inertial body connected to the intermediate member through the third elastic member, wherein the third elastic member is placed between the first elastic member and the second elastic member in an axial direction and between the first elastic member and the second elastic member in a radial direction. ### Claim 2 (depends on 1) The torque transmission apparatus according to claim 1, wherein the intermediate member includes a pair of plate members extending in parallel to each other in the radial direction and integrally connected with each other, and the third elastic member is interposed between the pair of plate members. ### Claim 3 (depends on 2) The torque transmission apparatus according to claim 2, wherein the inertial body includes an inertial plate member interposed between the pair of plate members in a manner rotatable with respect to the pair of plate members and extending from the third elastic member outward in the radial direction. ### Claim 4 (depends on 3) The torque transmission apparatus according to claim 3, wherein the second rotor includes an output plate member interposed between the pair of plate members in a manner rotatable with respect to the pair of plate members and placed inside the third elastic member in the radial direction. ### Claim 5 (depends on 4) The torque transmission apparatus according to claim 4, wherein an inner peripheral surface of the inertial plate member is slidably supported on an outer peripheral surface of the output plate member. ### Claim 6 (depends on 3) The torque transmission apparatus according to claim 3, wherein the inertial body further includes a ring-shaped mass body provided at an outer end portion of the inertial plate member. ### Claim 7 (depends on 6) The torque transmission apparatus according to claim 6, wherein the ring-shaped mass body is placed between a shell of a turbine runner of a torque converter and a cover placed on an outside of the shell in the radial direction and integrally rotating with a pump impeller of the torque converter. ### Claim 8 (depends on 1) The torque transmission apparatus according to claim 1, wherein the torque transmission apparatus is placed between a clutch piston of a lock-up clutch of a torque converter and a shell of a turbine runner of the torque converter, so as to transmit a torque from a power source through the lock-up clutch to a transmission, the first rotor includes the clutch piston or a rotor configured to integrally rotate with the clutch piston, and the second rotor includes an input shaft of the transmission or a rotor configured to integrally rotate with the input shaft. ### Claim 9 (depends on 1) A torque converter, comprising: the torque transmission apparatus according to claim 1; a pump impeller to which a torque from an power source is input; a cover fixed on the pump impeller; a turbine runner arranged opposite the pump impeller; a lock-up clutch including a clutch piston arranged opposite a side wall of the cover to be engaged with the cover or disengaged from the cover by driving of the clutch piston; and a turbine hub configured to output the torque from the power source through the lock-up clutch and the torque transmission apparatus to a driven component.