| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To secure a sealing property of a head member and a muffler member without the need of precisely processing the mounting surface of a rear head and a rear muffler nor increasing the number of parts. <P>SOLUTION: The rear head 38 comprises a main body 38b having a bearing hole 38a for inserting and fitting a shaft therein, an annular boss 38c projecting from the main body 38b so as to surround the bearing hole 38a, and an annular side wall 38d projecting from the main body 38b so as to surround the boss 38c. A rear muffler 39 comprises an aperture 39b for inserting and fitting the shaft therein with a peripheral part 39c of the aperture 39b fastened to the tip face of the side wall 38b so as to be contact with the tip face of the boss 38c. The tip face 38g of the boss 38c has a portion disposed on the opposite side of the main body 38b with respect to a surface including the tip face 38h of the side wall 38c around its whole circumference. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
