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Vibration transfer rate reducing device and method

A technology of vibration transmission rate and transmission device, which is applied in the direction of vibration suppression adjustment, shaft, mechanical equipment, etc., which can solve the problems of reduced noise and vibration performance in the car, increased noise in the car, and poor noise and vibration performance.

Inactive Publication Date: 2007-05-23
NISSAN MOTOR CO LTD
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AI Technical Summary

Problems solved by technology

As a result, interior noise is increased and noise and vibration performance is degraded
For example, in Japanese Kokai Patent Publication No. 2003-247596, a device for attenuating the bending vibration of a propeller shaft, which causes noise and vibration in the vehicle interior, is described by arranging a dynamic damper inside the propeller shaft reduced performance

Method used

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  • Vibration transfer rate reducing device and method
  • Vibration transfer rate reducing device and method
  • Vibration transfer rate reducing device and method

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Embodiment Construction

[0018] The damper disclosed in the aforementioned Japanese Kokai Patent Application No. 2003-247596 cannot suppress the vibration of the joint because the node of the primary bending vibration of the propeller shaft is axially closer to the center than the joint. Therefore, the damper cannot suppress the vibration of the differential or transmission connected to the drive shaft. The vibration of the input shaft end of the differential and the output shaft end of the transmission is transmitted to the panel of the vehicle body, causing the panel to vibrate. Therefore, the noise in the vehicle body is increased, and the noise and vibration performance is deteriorated.

[0019] According to an example of the vibration transmissibility reducing device disclosed herein, the vibration transmissibility reducing device can reduce the vibration transmissibility of a shaft that transmits a rotational driving force of a propeller shaft or the like, thereby improving noise and vibration p...

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Abstract

A vibration transfer rate reducing device and method are provided that can reduce the vibration transfer rate of a shaft to improve the noise and vibration performance in a vehicle. The vibration transfer rate reducing device includes a shaft that transfers rotation driving force, joints connected to the end parts of the shaft, a weight arranged at the end portion of the shaft on the side of transmission and extended to the side of transmission, and a weight arranged at the end portion of the shaft on the side of the differential and extended to the side of the differential.

Description

technical field [0001] The present invention relates to a technique for suppressing interior noise caused by bending vibration of a shaft, such as a propeller shaft, which transmits rotational driving force of an automobile. Background technique [0002] Typically, engine power is transferred to a propshaft via a transmission. The transmitted power is then transmitted to the left and right drive wheels via the differential. [0003] Bending vibrations occur within the drive shaft due to vibrations induced by the engine or the road surface, as well as eccentricity of the drive shaft itself. As a result, interior noise is increased, and noise and vibration performance is deteriorated. For example, in Japanese Kokai Patent Publication No. 2003-247596, a device for attenuating the bending vibration of a propeller shaft, which causes noise and vibration in the vehicle interior, is described by arranging a dynamic damper inside the propeller shaft Reduced performance. Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/00F16F15/22F16F15/28F16C3/00
CPCF16F15/1201
Inventor 酒卷秀彰
Owner NISSAN MOTOR CO LTD
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