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Torsional vibration absorber

A technology of torsional vibration damper and pendulum mass, which is applied in the field of torsional vibration damper and can solve problems such as non-compliance with the theoretical trajectory

Active Publication Date: 2015-04-15
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, under certain operating conditions the pendulum mass may not follow the set theoretical trajectory, but moves freely on the pendulum flange within the range of the play of its guide

Method used

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  • Torsional vibration absorber
  • Torsional vibration absorber
  • Torsional vibration absorber

Examples

Experimental program
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Embodiment Construction

[0025] figure 1 A torsional vibration damper 100 for use in a motor vehicle powertrain is shown. The torsional vibration damper 100 is mounted rotatably about the axis of rotation 105 and comprises a pendulum flange 110 and three pairs of pendulum masses 115 which are distributed on the pendulum flange 110 around the axis of rotation 105 . Each pendulum mass pair 115 includes a first pendulum mass 120 and a second pendulum mass 125 , as well as a pin 130 and a spring element 135 . The pendulum masses 120 and 125 are situated flush with each other on different axial sides of the pendulum flange 110 so that in figure 1 The rear pendulum flange 125 is not visible. Pin 130 rigidly connects pendulum masses 120 and 125 to one another. In this case, the pin 130 passes through a recess 140 in the pendulum flange 110 , which is dimensioned such that the pendulum mass pair 115 remains displaceable on the pendulum flange 110 in a plane of rotation about the axis of rotation 105 .

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Abstract

Disclosed is a torsional vibration absorber (100) which comprises a pendulum flange (110) which can rotate about an axis of rotation (105) and has a recess (140), two pendulum mass pairs (115) which are displaceably adjacently arranged in peripheral direction on the pendulum flange (110), and an elastic element (135) for damping a mutual collision of adjacent pendulum mass pairs (115). The pendulum mass pairs (115) each comprise two pendulum masses (120, 125) which lie mutually opposed relative to the pendulum flange, and a bolt (130) which runs through the recess (140) and connects the pendulum masses (120, 125) axially to each other. In the region of the recess (140), an elastic element (135) is attached to each of the two bolts (130) and is provided in order to make contact in peripheral direction with the other respective elastic element (135).

Description

technical field [0001] The invention relates to a torsional vibration damper, especially for use in a powertrain of a motor vehicle. Background technique [0002] Torsional vibration dampers are used for the transmission of torque in the drivetrain, for example from the drive motor to the transmission. The purpose of the torsional vibration damper is, in addition to transmitting the torque, to eliminate torsional vibrations (torsional vibrations) which may be superimposed on this torque. For this purpose, the torsional vibration damper includes a pendulum flange, on which a pendulum mass is displaceably arranged. By means of the link guide, the pendulum mass is guided on the pendulum flange in such a way that the pendulum mass moves radially inward when the pendulum flange is accelerated about its axis of rotation, wherein the rotational torque of the torsional vibration damper is changed. In a refinement, the pendulum mass is a trapezoidal pendulum which is guided doubly ...

Claims

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Application Information

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IPC IPC(8): F16F15/14
CPCF16F15/145Y10T74/2128F16F15/14
Inventor D·施纳德尔巴赫C·许格尔M·里伯
Owner SCHAEFFLER TECH AG & CO KG