| 摘要 |
PROBLEM TO BE SOLVED: To prevent the deterioration of feeling of use by blowing of cooling air. SOLUTION: The rear end of a second housing 6 is fitted so as to substantially cover the connection part between a first housing 3 and a motor housing 8, and the lower end front half thereof is fitted so as to perfectly cover the front surface of the first housing 3. The lower end rear part of a lower housing 5 is exposed from both side surfaces of the second housing 6. A space 49 is formed between the first housing 3 and the second housing 6, and the space 49 is allowed to communicate with the outer part only through a clearance 50 formed near the center of both the side surface between the first housing 3 and the second housing 6. |
