| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To take measures against vibration of an irregular-pitch fan as conventional measures against vibration due to the non-uniform blown air volume of the irregular-pitch fan have been insufficient, whereas use of a so-called irregular-pitch fan as a fan built into a power tool can reduce generation of uncomfortable blade passing noise (NZ noise) peculiar to the fan. <P>SOLUTION: In a handy cleaner 1 having the irregular-pitch fan built-in as a dust attracting fan 30, the dust attracting fan 30 is supported in a body housing 21 via a fan case 24 covered with an elastic cover 23. In addition, by changing a blow-out direction from a radial direction to backward through blow-out ports 24b-24b, air is prevented from directly blowing against the body housing 21 to reduce vibration of a handle 25. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
