Torsional vibration reduction device

Abstract

The invention provides a torsional vibration reduction device which suppresses reduction of vibration reduction characteristics or vibration reduction performance caused by machining errors and the like. According to the present invention, a guide part (5) facing in the radial direction is provided in a rotating body (2) that rotates by receiving torque, and a rolling body (4) that is guided in the radial direction by the guide part (5) by inserting a shaft part (4a) into the guide part (5) is provided, the rolling body (4) having mass parts (4b) at both end parts of the shaft part (4a), and the mass parts (4b) are arranged in the radial direction of the rolling body (4). An inertial mass body (3) having a rolling surface (7) is provided coaxially with a rotating body (2) and capable of rotating relative to the rotating body (2), a mass part (4b) is pressed against the rolling surface (7) by centrifugal force, and a guide part (5) has a pair of inner wall parts facing each other across a shaft part (4a) in the circumferential direction of the rotating body (2). An elastic member (6) for pressing the shaft portion (4a) against the other of the pair of inner side wall portions is provided to only one of the inner side wall portions.

Description

technical field [0001] The present invention relates to a device for reducing fluctuation (vibration) of torque input to a rotating body by using the vibrator motion of an inertial mass body, in particular, to a device configured to connect the rotating body and the inertial mass body by a centrifugal mass body, and to maintain the rotating body by a centrifugal force A torsional vibration reducing device for the relative position of a rotating body and an inertial mass body. Background technique [0002] An example of such a device is configured such that a centrifugal mass body held by a rotating body in a state of being restrained in the rotational direction is pressed against a centrifugal mass formed on the inertial mass body by a centrifugal force generated by rotating (revolving) with the rotating body. rolling surface. In such a device, when a relative phase shift occurs between the rotating body and the inertial mass body due to torque fluctuations input to the rot...

AI Technical Summary

Problems solved by technology

On the other hand, when a component such as a centrifugal member is in contact with an inertial mass body such as an inertia ring, there is a possibility that a torque is generated due to the deviation, and the vibration damping characteristic or the vibration damping performance may be reduced.

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