# US 10,480,614 B2 · Device for filtering vibrations > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,614 B2 - Document ID: US10480614B2 - Status: Granted - Kind: B2 - Application number: 15/186,819 - Filed: 2016-06-20 - Published: 2016-12-22 - Granted: 2019-11-19 - Earliest claimed: 2015-06-18 - Assignees: Valeo Embrayages - Applicants: Valeo Embrayages - Inventors: Franck Cailleret; Michael Hennebelle; Roel Verhoog - Web page: https://patentgrep.com/patent/US10480614B2 ## CPC - F16F 15/1428: {with a single mass} - F16F 15/13484: {acting on multiple sets of springs} - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION ## Abstract An inertial deflector (1) for a motor vehicle transmission system. The inertial deflector comprises a support member (7) intended to be associated with an element (3) of the transmission system and to be driven rotationally around an axis X, an inertia mass (8) mounted rotationally movably on the support member (7) around the axis X, and helical springs (9) arranged along a circumferential direction and elastically rotationally coupling the support member (7) and the inertia mass (8). Each of the helical springs (9) is received in a receiving space that is delimited between on the one hand a recess (22) configured in the inertia mass (8) and radially and axially guiding the helical spring, and on the other hand a rim zone (23) of the support member (7) covering the recess (22) in order to axially retain the helical spring (9) in the recess (22). ## Claims ### Claim 1 An inertial deflector (1, 101, 201, 301) for a motor vehicle transmission system, the inertial deflector comprising: a support member (7, 107, 207, 307) intended to be associated with an element (3, 203) of the transmission system and to be driven rotationally around an axis X, the support member (7, 107, 207, 307) including a rim zone (23, 130, 342); an inertia mass (8, 108, 208, 308) mounted rotationally movably on the support member (7, 107, 207, 307) around the axis X, the inertia mass (8, 108, 208, 308) including a recess (22, 122, 222, 338) therein; and helical springs (9, 109, 209, 309) arranged along a circumferential direction and elastically rotationally coupling the support member (7, 107, 207, 307) and the inertia mass (8, 108, 208, 308); at least one of the helical springs (9, 109, 209, 309) disposed in the recess (22, 122, 222, 338) between the inertia mass (8, 108, 208, 309) and the rim zone (23, 130, 342) of the support member (7, 107, 207, 307); the recess and the rim zone being configured with respect to one another to retain the at least one of the helical springs in the recess (22, 122, 222, 338); each of the helical springs (9) interposed circumferentially between two first abutment elements (24a, 24b) rotationally integral with the inertia mass (8) and between two second abutment elements (26) rotationally integral with the support member (7); each of the two first abutment elements (24a, 24b) includes a pair of axially oriented abutment pins spaced radially from one another and press-fitted into a bore (25) provided in the inertia mass (8); each of the two second abutment elements is an abutment tab (26) having an axial orientation and arranged radially between the two abutment pins of one of the pairs of the abutment pins. ### Claim 2 (depends on 1) The inertial deflector according to claim 1, wherein each of the helical springs is disposed in the recess (22, 122, 222, 338) between the inertia mass (8, 108, 208, 309) and the rim zone (23, 130, 342) of the support member (7, 107, 207, 307), wherein the recess in the inertia mass guides each of the helical springs radially and axially, and wherein the rim zone covers the recess (22, 122, 222, 338) in order to axially retain the helical springs (9, 109, 209, 309) in the recess. ### Claim 3 (depends on 2) The deflector according to claim 2, wherein the recess in the inertia mass (8, 108, 208) includes an annular channel (22, 122, 222) extending circumferentially around the axis X. ### Claim 4 (depends on 2) The deflector according to claim 2, wherein the inertia mass (8, 108, 208) is a one-piece part. ### Claim 5 (depends on 2) The inertial deflector according to claim 2, wherein the inertia mass (308) has an annular part (335) and a plurality of sectors (336) of sheet metal fastened to the annular part (335) and extending radially, and wherein each of the sectors (336) has an indented zone (338) constituting, with an inner edge (339) of the annular part (335), the recess of the inertia mass (308). ### Claim 6 (depends on 1) The inertial deflector according to claim 1, wherein the recess in the inertia mass (8, 108, 208) includes an annular channel (22, 122, 222) extending circumferentially around the axis X. ### Claim 7 (depends on 6) The deflector according to claim 6, wherein the inertia mass (8, 108, 208) is a one-piece part. ### Claim 8 (depends on 1) The inertial deflector according to claim 1, wherein the inertia mass (8, 108, 208) is a one-piece part. ### Claim 9 (depends on 1) The inertial deflector according to claim 1, wherein the inertia mass (308) has an annular part (335) and a plurality of sectors (336) of sheet metal fastened to the annular part (335) and extending radially, and wherein each of the sectors (336) has an indented zone (338) constituting, with an inner edge (339) of the annular part (335), the recess of the inertia mass (308). ### Claim 10 (depends on 1) The inertial deflector according to claim 1, wherein the support member (7, 107, 207, 307) has an indented annular zone (13, 113, 213) defining an axially oriented guidance surface (31, 131, 231), and wherein the guidance surface (14, 232) interacts with a complementary guidance surface (15, 231) constituted on an inner edge of the inertia mass (8, 108, 208, 308) so as to center and rotationally guide the inertia mass (8, 108, 208, 308) on the support member (7, 107, 207, 307). ### Claim 11 (depends on 1) The inertial deflector according to claim 1, wherein the inertia mass (8, 108) is retained axially on the support member (7, 107) by a plurality of pegs (16, 116) each passing through a cylindrical bore (17) provided in the inertia mass (8) and a circumferentially oriented opening (18, 118) provided in the support member (7, 107). ### Claim 12 (depends on 11) The inertial deflector according to claim 11, wherein each of the pegs (16, 116) has a first end provided with a head (19) and a second end provided with an annular channel in which an elastic clip (20) is mounted, and wherein the inertia mass (8, 108) and the support member (7, 107) are sandwiched between the head (19) and the elastic clip (20). ### Claim 13 (depends on 1) The inertial deflector according to claim 1, wherein the support member (207) has, along an extension of a guidance surface (232), a plurality of tongues (233); and wherein a guidance surface (231) provided on the inertia mass (208) is bordered axially by an annular bead (234) projecting radially inward and interacting with the tongues (233) in order to axially retain the inertia mass (208) on the support member (207). ### Claim 14 (depends on 1) The inertial deflector according to claim 1, wherein the helical springs (109, 309) are associated pairwise, wherein each of the helical springs (109, 309) has a first end facing the other helical spring of the pair of helical springs and a second opposite end, wherein an abutment element (128, 340) integral with one of the inertia mass (8) and the support member (7) is interposed between the first ends of the helical springs (109, 309) of each pair of the helical springs, and two abutment elements (26, 341) rotationally integral with another of the inertia mass (8) and the support member (7) interacting respectively with the second ends of the helical springs of each pair of the helical springs, wherein each of the helical springs (9) are pre-stressed between a first abutment element (128, 340) rotationally integral with the inertia mass (108, 308) and a second abutment element (26, 341) rotationally integral with the support member (107, 307). ### Claim 15 (depends on 1) A torque transmission device intended to transmit a torque between a crankshaft and an input shaft of a gearbox, the torque transmission device comprising an inertial deflector (1, 101, 201, 301) according to claim 1. ### Claim 16 (depends on 15) The torque transmission device according to claim 15, further comprising a hub (3, 203) having splines intended to interact with complementary splines configured on the input shaft of the gearbox; wherein the support member (7, 107, 207, 307) is fastened to the hub (3, 203). ### Claim 17 (depends on 15) A transmission system comprising: a transmission device according to claim 15; and a cylinder deactivation engine, wherein the inertial deflector (1, 101, 201, 301) has no friction device configured to exert a resisting frictional torque acting against the relative deflection between the inertia mass (8, 108, 208, 308) and the support member (7, 107, 207, 307).