Filtering pulley
    1.
    发明授权

    公开(公告)号:US12276328B2

    公开(公告)日:2025-04-15

    申请号:US18560504

    申请日:2022-05-17

    Abstract: Filtering pullies with a hub adapted to be fixed to a rotating shaft, a crown mounted coaxially and rotationally free on the hub, at least one elastic group arranged circumferentially with respect to the hub and the crown and interposed, each, between a pair of first elements integral with the hub and between a pair of second elements integral with the crown are disclosed. The pulley has a dust protection system configured to isolate the at least one elastic group with respect to the external environment and to provide an axial force generating a damping to the movement between the hub and the crown.

    Tensioner for an accessory drive of a motor vehicle and accessory drive including such a tensioner

    公开(公告)号:US12270470B2

    公开(公告)日:2025-04-08

    申请号:US18003937

    申请日:2021-07-01

    Abstract: A tensioner for an accessory drive of an internal combustion engine has a belt on a first pulley connected to a drive shaft of the engine and a second pulley connected to an electric machine. The tensioner has a base configured to be fixed to a casing of the electric machine, a first ring rotating with respect to the base about a first axis, a second ring rotating with respect to the first ring about a second axis distinct from the first axis, a first tensioning pulley carried by the first ring and rotating with respect to it about its own axis, a second tensioning pulley carried by the second ring and rotating with respect to it about its own axis and elastic means acting on the first and on the second ring to push the first and the second pulleys into contact with respective spans of the belt.

    Transmission module provided with a hydraulic actuator

    公开(公告)号:US12071017B2

    公开(公告)日:2024-08-27

    申请号:US17757844

    申请日:2020-12-24

    CPC classification number: B60K6/387 B60K6/36 F16D25/12 F16D2125/06 F16D2300/08

    Abstract: A transmission module for a hybrid drive vehicle configured to be interposed between an internal combustion engine and a transmission of the vehicle has a tray-like support structure configured to be secured to the engine and defines a housing for a clutch to be interposed between a crankshaft of the internal combustion engine and the module. An actuator controls the clutch. The actuator includes an annular chamber provided in the support structure and opens toward the housing, and an annular piston housed in the annular chamber is axially sliding but angularly fixed. A thrust member is coupled in a rotationally free manner to the annular piston, coaxial thereto and operable to cooperate with a control member of the clutch under the thrust of the piston.

    Pulley for a motor vehicle engine

    公开(公告)号:US11946512B2

    公开(公告)日:2024-04-02

    申请号:US17760382

    申请日:2021-02-11

    CPC classification number: F16D11/14 F16D27/09 F16D27/105 F16D27/112

    Abstract: A pulley unit has a hub configured to be connected to a crankshaft, a pulley coaxial to the hub and supported in a rotationally free manner with respect thereto, a clutch interposed between the hub and the pulley, and an actuator for controlling the clutch, The clutch has an inner disc rotationally coupled to the hub and an engagement portion housed inside the pulley, a mobile member axially movable between an engagement position in which the mobile member rotationally couples the pulley to the engagement portion of the inner disc and a disengagement position in which the pulley is rotationally free with respect to the inner disc, and an elastic element acting on the mobile member to push it towards the engagement position.

    PULLEY FOR A MOTOR VEHICLE ENGINE

    公开(公告)号:US20230084509A1

    公开(公告)日:2023-03-16

    申请号:US17760382

    申请日:2021-02-11

    Abstract: A pulley unit has a hub configured to be connected to a crankshaft, a pulley coaxial to the hub and supported in a rotationally free manner with respect thereto, a clutch interposed between the hub and the pulley, and an actuator for controlling the clutch. The clutch has an inner disc rotationally coupled to the hub and having an engagement portion housed inside the pulley, a mobile member axially movable between an engagement position in which the mobile member rotationally couples the pulley to the engagement portion of the inner disc and a disengagement position in which the pulley is rotationally free with respect to the inner disc, and an elastic element acting on the mobile member to push it towards the engagement position.

    FILTERING PULLEY
    9.
    发明申请
    FILTERING PULLEY 审中-公开

    公开(公告)号:US20180051792A1

    公开(公告)日:2018-02-22

    申请号:US15559839

    申请日:2016-03-18

    Abstract: A filtering pulley having a hub adapted to be fixed to a rotating shaft, a pulley ring mounted coaxial and rotationally free on the hub, and a plurality of elastic assemblies arranged circumferentially with respect to the hub and the pulley ring and each interposed between a pair of first elements integral with the hub and between a pair of second elements integral with the pulley ring is disclosed. Each elastic element forms with the first elements and with the second elements respective angular clearances, and the pulley ring and the hub have a free angle of relative rotation equal to the sum of the above-mentioned angular clearances.

    FILTERING PULLEY COMPRISING AN IMPROVED DAMPING DEVICE

    公开(公告)号:US20180045288A1

    公开(公告)日:2018-02-15

    申请号:US15559840

    申请日:2016-03-18

    CPC classification number: F16H55/36 F16F15/123 F16H2055/366

    Abstract: A filtering pulley having a hub adapted to be fixed to a rotating shaft, a pulley ring mounted coaxial and rotationally free on said hub, and at least one elastic assembly interposed between the hub and the pulley ring and a damper for damping the relative oscillations between the hub and the pulley ring is disclosed. The damper has a first damping level for relative rotations between the hub and the pulley ring which are smaller than a predetermined angle and a second damping level, which is greater than the first level, for relative rotations between the hub and the pulley ring which are larger than the predetermined angle.

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