【図面の簡単な説明】[Brief explanation of the drawing]
第１図は本考案に係る第１実施例を示すもので
、第１図イは蛇腹が縮んだ状態の側面図、第１図
ロは蛇腹が伸びた状態の側面図、第１図ハは第１
図イのＡ―Ａ線に沿う拡大断面図、第１図ニは蛇
腹が縮んだ状態の拡大断面図、第２図は第１図実
施例の変形例を示したもので、第２図イは斜視図
、第２図ロは第２図イのＢ―Ｂ線に沿う上面部の
拡大斜視図、第２図ハは第２図イのＢ―Ｂ線に沿
う側面部の拡大斜視図、第３図は第１実施例の別
の変形例を示した断面図、第４図イは第３図の場
合の空気の流れを示した側面図、第４図ロは第４
図イの拡大部分斜視図、第５図は本考案に係る第
２実施例を示したもので、第５図イは側面図、第
５図ロは第５図イのＣ―Ｃ線に沿う拡大断面図、
第５図ハはスライド部材が伸びた状態の拡大断面
図、第６図は従来例を示すもので、第６図イは作
用を示すための側面図、第６図ロも作用を示すた
めの側面図である。
３……車体前部、４……蛇腹、５……車体後部
、６ａ，７ａ……開口部、９……スライド部材。
Fig. 1 shows a first embodiment of the present invention, Fig. 1 A is a side view with the bellows retracted, Fig. 1 B is a side view with the bellows extended, and Fig. 1 C is a side view with the bellows extended. 1st
Figure 1D is an enlarged sectional view taken along the line A--A in Figure A, Figure 1D is an enlarged sectional view of the bellows in a contracted state, Figure 2 shows a modification of the embodiment in Figure 1, and Figure 2 is a perspective view, FIG. 2B is an enlarged perspective view of the top part along line BB in FIG. 2A, and FIG. FIG. 3 is a sectional view showing another modification of the first embodiment, FIG. 4 A is a side view showing the air flow in the case of FIG. 3, and FIG.
Figure 5 is an enlarged partial perspective view of Figure A, and Figure 5 shows a second embodiment of the present invention, Figure 5 A is a side view, and Figure 5 B is a view taken along line C--C in Figure 5 A. Enlarged cross-sectional view,
Fig. 5C is an enlarged sectional view of the slide member in an extended state, Fig. 6 shows a conventional example, Fig. 6A is a side view to show the action, and Fig. 6B is also a diagram to show the action. FIG. 3... Front part of vehicle body, 4... Bellows, 5... Rear part of vehicle body, 6a, 7a... Opening, 9... Slide member.