Dual mass damping flywheel, in particular for motor vehicle
AssigneeValeo
InventorsCiriaco Bonfillio, René Ruguet
Life of this patent
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Abstract
A dual mass damping flywheel comprising a secondary wheel (13) including a torque limiter (19) interposed between the external periphery of a hub (18) and the internal periphery of a reaction plate (16). The hub (18) defines a cavity (9) for housing a stop linked in rotation to the hub (18) and acting as support for elastic means (70) support on a counter-stop (71) integral with the hub (18), while the stop (271) is integral with a friction washer (280) urged in contact with an internal ring (160) of the reaction plate (16). The invention is applicable to motor vehicles.
Claims41
A dual mass damping flywheel for coupling an internal combustion engine (100) in rotation to an input member (101) of a transmission system, comprising:
- a primary flywheel (12) having a transverse element (14) which is adapted to be coupled in rotation to the internal combustion engine (100),
- a secondary flywheel (13) comprising, firstly, a reaction plate (16) with a friction face (17) adapted to be coupled releasably to the input member (101) of the transmission system for rotation therewith, and secondly, an internal hub (18) surrounded by the reaction plate (16) and mounted rotatably on the primary flywheel (12), with resilient members (24, 25) operatively interposed between the transverse element (14) of the primary flywheel (12) and the internal hub (18) of the secondary flywheel (13), and
- a torque limiter (19) being interposed operatively between the reaction plate (16) and the internal hub (18), wherein the torque limiter (19) is provided with axially acting resilient means (70) and includes, firstly, a ring portion (160) fixed with respect to the reaction plate (16) and extending radially inwards of the friction face (17) of the reaction plate (16), and secondly, an annular groove (10) for receiving the ring portion (160), this groove being bounded by a first flank (181) fixed with respect to the internal hub (18), a second flank (281) which is part of a friction ring (280) which is rotatable with the internal hub (18), and a base (183, 283),
- wherein the internal hub (18) is adapted to delimit a cavity (9) radially inwards of the internal ring portion (160) of the reaction plate (16), for mounting therein at least one abutment element (271) which is fixed with respect to the friction ring (280) and offset axially towards the primary flywheel (12) with respect to the friction ring (280), and wherein, radially inwards of the internal ring portion (160) of the reaction plate (16), the axially acting resilient means (70) bear on the abutment element (271) and on at least one backing element (71) which is fixed to a support member (72) fixed to the internal hub (18), whereby to grip the ring portion (160) between the flanks (181, 281) of the groove (10).
Dependencies are inferred from the claim text.