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Vibration damping device and power transmission device

a technology power transmission device, which is applied in the direction of rotary machine parts, mechanical equipment, machining, etc., can solve the problems of compact and low cost of vibration damping device, and achieve the effect of reducing the level of vibration noise and minimizing the adverse influen

Inactive Publication Date: 2011-10-06
TOYOTA JIDOSHA KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a compact and low-cost vibration damping device that can effectively reduce vibration noise in a rotational direction and also exert an inertial force in a translational direction. This device can be used in a rotary shaft and is particularly useful in vehicles. The device includes a mass body that is spaced apart from the rotary shaft and is supported by a support portion that rotatably supports the mass body with respect to the rotary shaft. The mass body is designed to minimize its impact on the compliance characteristic of the rotary shaft in the rotational direction and to exert a damping effect on bending resonance or the like. The device can be easily installed and is highly resistant to vibration. The invention also provides a power transmission device equipped with the vibration damping device.

Problems solved by technology

As a result, this vibration damping device is compact and low in cost.

Method used

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  • Vibration damping device and power transmission device
  • Vibration damping device and power transmission device
  • Vibration damping device and power transmission device

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Embodiment Construction

[0044]Preferred embodiments of the invention will be described hereinafter with reference to the drawings.

[0045]FIG. 1 is a schematic lateral sectional view of a vibration damping device according to the first embodiment of the invention. FIG. 2 is a schematic front sectional view of the vibration damping device. FIG. 3 is a lateral sectional view of a power transmission device fitted with the vibration damping device according to the first embodiment of the invention. The vibration damping device according to this embodiment of the invention is applied to a mass damper for damping bending resonance which is fitted to a rear differential device of a rear-wheel-drive vehicle.

[0046]First of all, the construction of the vibration damping device will be described.

[0047]As shown in FIGS. 1 and 2, a vibration damping device 10 is equipped with a mass body 12 disposed spaced apart from a rotational center axis CL of a rotary shaft 11 by a certain distance, and a rolling bearing 13 as a sup...

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Abstract

A vibration damping device is equipped with a mass body disposed spaced apart from a rotational center axis of a rotary shaft by a certain distance, and a rolling bearing that rotatably supports the mass body with respect to the rotary shaft and holds a support posture of the mass body with respect to the rotational center axis of the rotary shaft constant.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The application is a divisional of U.S. application Ser. No. 12 / 408,819 filed Mar. 23, 2009, which claims priority to Japanese Patent Application No. 2008-104881 filed on Apr. 14, 2008, both of which are incorporated herein by reference in its entirety including the specifications, drawings and abstracts.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to a vibration damping device and a power transmission device, and more particularly, to a vibration damping device that damps vibrations of a rotary shaft in a translational direction other than a rotational direction thereof using an inertial mass (mass body), and a power transmission device fitted with the vibration damping device.[0004]2. Description of the Related Art[0005]As a vibration damping device that exerts a vibration damping effect in the vicinity of a resonance frequency of a vibration system, a dynamic vibration absorber composed of an in...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F16F15/10F16F15/30F16H48/08F16C3/00
CPCY10T74/2131Y10T74/2126Y10T464/50Y10T74/2121F16H48/42Y10T74/19865F16F15/1485F16H48/08Y10T74/2132F16F15/10
Inventor MOCHIHARA, TAKAHIRO
Owner TOYOTA JIDOSHA KK
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