Centrifugal pendulum vibration control device

Abstract

A centrifugal pendulum vibration control device improving vibration damping performance under a condition of not increasing the mass of inertial mass bodies and the swing radius is provided. The device includes an input member (15) into which rotation from an engine (E) is inputted, a first inertial mass body (16) supported on the input member through a first connecting rod member (22) in a manner of capable of pendulum movement, and a second inertial mass body (17) supported on the first inertial mass body a second connecting rod member (23) in a manner of capable of pendulum movement. The input member and the second inertial mass body are disposed at the same axis (L) in a relatively freely rotating manner, and therefore when the input member rotates, the first inertial mass body performs pendulum movement relative to the input member by utilizing centrifugal force and the second inertial mass body performs pendulum movement relative to the first inertial mass body by utilizing centrifugal force so that the swinging angle (theta') of the pendulum movement of the second inertial mass body is larger than the swinging angle (theta) of the pendulum movement of the first inertial mass body. accordingly, the damping force can be increased without the need of increasing the mass of the second inertial mass body and the swing radius.

Description

technical field [0001] The present invention relates to a centrifugal vibrator type vibration damping device arranged between an engine and a transmission for reducing vibration generated by rotation fluctuation of the engine. Background technique [0002] Regarding such a centrifugal vibrator type vibration damping device, the following Patent Document 1 has known a structure in which four inertial mass bodies are supported by two arm members on the outer periphery of the support member, and four inertial mass bodies are supported by the support member, the inertial mass bodies, and the The two arm members constitute a four-section parallel link, so that the inertial mass body moves in parallel along an arc-shaped trajectory relative to the supporting member. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2012-141018 [0006] In addition, in the centrifugal vibrator type vibration damping device, the magn...

AI Technical Summary

Problems solved by technology

Therefore, in order to increase the vibration damping torque, it is sufficient to increase the mass and swing radius of the inertial mass body, but if the mass and swing radius of the inertial mass body are increased, the damper itself that is provided with the centrifugal vibrator type vibration damping device will be caused. Increase in weight and size, so there is a problem that the inertial mass of the damper itself increases to degrade the acceleration performance of the vehicle

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