| 摘要 |
PROBLEM TO BE SOLVED: To suppress restriction to an installation space of a vibration suppression member for suppressing vibration of an instrument panel reinforcement member. ! SOLUTION: In an instrument panel reinforcement structure S, a vibration suppression member 30 is installed on an instrument panel RF12. The vibration suppression member 30 comprises a spring portion 32 and a mass portion 34, and has a structure in which the mass portion 34 is connected to the instrument panel RF12 by the spring portion 32. The vibration suppression member 30 is configured as a dynamic damper. A primary natural frequency of the vibration suppression member 30 is set to be closer to a primary natural frequency of the instrument panel RF12 including a steering column. Thus, at the primary natural frequency of the instrument panel RF12, vibration of the instrument panel RF12 is suppressed. Since the vibration suppression member 30 is arranged within the instrument panel RF12, the vibration suppression member 30 can be |
