Damping and steering tube column mounting bracket and CCB system and automobile comprising damping and steering tube column mounting bracket

Abstract

The invention discloses a damping and steering tube column mounting bracket and a CCB system and automobile comprising the damping and steering tube column mounting bracket. The bracket comprises a left bracket body, a right bracket body and a transverse stiffening plate, wherein the left bracket body comprises a first left area and a second left area formed in sequence; the right bracket body isarranged oppositely to the left bracket body and comprises a first right area and a second right area formed in sequence; the transverse stiffening plate is connected between the left bracket body andthe right bracket body; a protruding part is arranged at the left end of the transverse stiffening plate; a front mounting position of the steering tube column is positioned in the first left area and the first right area; the transverse stiffening plate is fixedly connected with the first left area, the second left area, the first right area and the second right area; and the protruding part isfixedly connected with the first left area. The structure characteristics of the bracket are changed by increasing the transverse stiffening plate, so that the Y-direction modal inherent frequency ofthe steering system is changed so as to decouple to second-order excitation frequency of the engine; and therefore, the problems that the engine operates in an idle state and the steering wheel has extremely high vibration when the air conditioning is turned on are solved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vibration damping steering column mounting bracket and a CCB system (CCB system namely: Cross Car Beam System, instrument panel beam system) containing the same and an automobile. Background technique [0002] NVH (Noise, Vibration, Harshness, that is, noise, vibration and harshness) is a comprehensive index to measure the quality of automobile manufacturing, and it will bring very intuitive comfort to car users. With the development of society and the progress of science and technology, people's calls for vibration reduction and noise reduction are increasing day by day, and the control of automobile NVH by major OEMs is becoming more and more strict. [0003] During the driving process of the car, the engine, intake and exhaust system, air conditioning system, chassis system, wind excitation, etc. are all sources of noise and vibration. Among them, the noise and vibratio...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the steering wheel vibrates too much when the engine is idling and the air conditioner is turned on, and to provide a vibration-damping steering column mounting bracket and a CCB system and a car that include it.

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