| 摘要 |
PROBLEM TO BE SOLVED: To provide a high noise reduction effect at a low cost and improve appearance without increasing the number of part items. SOLUTION: This sound isolation structure has a V-belt type automatic transmission and is supported to swing with respect to a motorcycle body 2. In this case, an air cleaner 25 is attached to the outer periphery of a unit case 20, and the outside wall 25a of the air cleaner 25 is extended to the outside of the unit case 20 so as to cover the outside face of the unit case 20. A sound absorbing material 27 is arranged between the section 25b, comprising the outside wall 25a of the air cleaner 25 extended to the outside of the unit case 20 and to the outside of the unit case 20.
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