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Pulley decoupler with centrifugal pendulum device including first friction device

A technology of centrifugal force pendulum and friction device, applied in the direction of belt/chain/gear, hoisting device, element with teeth, etc.

Active Publication Date: 2022-03-29
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During vibrations, the at least one pendulum mass may hit a stop that limits the maximum vibration angle of the at least one pendulum mass, thereby generating undesired noises

Method used

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  • Pulley decoupler with centrifugal pendulum device including first friction device
  • Pulley decoupler with centrifugal pendulum device including first friction device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] figure 1A longitudinal section of a first variant of the pulley isolator 1 is shown. The pulley decoupler 1 has an input 2 with a hub 16 , a centrifugal pendulum flange 6 , a centrifugal pendulum device 5 and a spring flange 15 . The hub 16, the centrifugal force pendulum flange 6 and the flange 15 are arranged for joint rotation and can rotate around the rotation axis 4 driven by an electric vehicle driving machine (not shown). The pulley decoupler 1 also has an output 3 comprising a pulley 12 . A traction means running surface 22 for a traction means (not shown) is formed on an outer peripheral surface 23 of the pulley 12 . Arranged between the input 2 and the output 3 is a damping device 28 comprising a plurality of energy stores 30 arranged in the circumferential direction, the energy stores 30 being designed here in the form of arc springs. The accumulator 30 is supported on the spring flange 15 on the one hand, and on the pulley 12 or the cover 11 of the pulley...

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PUM

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Abstract

The invention provides a pulley decoupler (1) for auxiliary drives, said pulley decoupler (1) having at least: an input part (2); an output part (3), said output part (3) and said input part (2) are rotatable around the same axis of rotation (4) and within a limited range relative to each other; and a centrifugal force pendulum device (5) for damping rotational vibrations , which has a centrifugal pendulum flange (6) rotatable around said axis of rotation (4) and has at least one pendulum mass (7, 21), wherein the friction force generated by the first friction device (8) with the first spring (9) and at least one first friction element (10) acts on the at least one pendulum mass (7, 21).

Description

technical field [0001] The invention relates to a pulley decoupler for an auxiliary drive, in particular an internal combustion engine of a motor vehicle, in particular to an auxiliary drive traction device drivable via the pulley decoupler. Background technique [0002] Pulley isolators of this type usually have a damping device comprising at least one spring-type energy store, which is used to damp rotational vibrations and is arranged between the input and output of the pulley isolator. To further reduce rotational vibrations, the pulley isolator can also have a centrifugal pendulum arrangement with at least one pendulum mass that can be displaced under the action of centrifugal force. The at least one pendulum mass oscillates in the opposite direction to the rotational vibration to be damped, damping and / or canceling the vibrational energy or amplitude of the rotational vibration. Due to the vibration of the at least one pendulum mass, energy can be withdrawn from the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/14F16D3/66F16H55/36F16F15/123
CPCF16D3/12F16F15/123F16F15/145F16F2222/04F16H55/36F16H2055/366
Inventor P·拉施J·西费特D·海因里希H·蒙德A·斯塔费尔
Owner SCHAEFFLER TECH AG & CO KG