【図面の簡単な説明】[Brief explanation of the drawing]
第１図はこの考案の第１実施例を示す分解斜視
図、第２図は同じくその要部を拡大して示す斜視
図、第３図イ，ロは車体の振動をを表わし、イは
車体の曲げ共振、ロは車体の捩り共振をそれぞれ
示す説明図、第４図及び第５図はこの考案の第１
実施例を模式化して示す説明図、第６図はこの考
案の第２実施例を示す要部斜視図、第７図は同じ
くそれを模式化して示す説明図、第８図は機関回
転数及び加振周波数とダイナミツクダンパの固有
振動数との関係を示す線図、第９図はこの考案の
第３実施例を示す要部斜視図、第１０図はこの考
案の第４実施例を示す要部斜視図、第１１図は同
じくそのバンパ支持点付近の断面図、第１２図は
この考案の第５実施例を示す分解斜視図、第１３
図は同じくその要部を拡大して示す斜視図、第１
４図は同じくその第５実施例を模式化して示す説
明図、第１５図は従来の車両用バンパ支持構造を
示す斜視図、第１６図は同じくそれを模式化して
示す説明図である。
１……フアーストクロスメンバ（車体）、４，
４９，５４……バンパマウント、４ｂ，４９ｂ，
５４ｂ……弾性体、６……バンパステー、８，５
８……バンパアーマチユア、９……溝、１０，２
０……重り、１２……バンパフエイシヤ、１５，
３５，５５……バンパ、Ｐ……支持点。
Fig. 1 is an exploded perspective view showing the first embodiment of this invention, Fig. 2 is an enlarged perspective view of the main parts, and Fig. 3 A and B show vibrations of the car body. Figures 4 and 5 are explanatory diagrams showing the bending resonance of the vehicle body, and the torsional resonance of the vehicle body.
An explanatory diagram schematically showing the embodiment, FIG. 6 is a perspective view of main parts showing the second embodiment of this invention, FIG. 7 is an explanatory diagram schematically showing the same, and FIG. A diagram showing the relationship between the excitation frequency and the natural frequency of the dynamic damper, Fig. 9 is a perspective view of the main part showing the third embodiment of this invention, and Fig. 10 shows the fourth embodiment of this invention. 11 is a sectional view of the vicinity of the bumper support point, FIG. 12 is an exploded perspective view showing the fifth embodiment of this invention, and FIG. 13 is a perspective view of the main parts.
The figure is also a perspective view showing the main parts enlarged.
FIG. 4 is an explanatory view schematically showing the fifth embodiment, FIG. 15 is a perspective view showing a conventional vehicle bumper support structure, and FIG. 16 is an explanatory view schematically showing the same. 1...First cross member (vehicle body), 4,
49, 54...bumper mount, 4b, 49b,
54b...Elastic body, 6...Bumper stay, 8,5
8...Bumper armature, 9...Groove, 10,2
0... Weight, 12... Bumper weight, 15,
35, 55...Bumper, P...Support point.