| 摘要 |
PROBLEM TO BE SOLVED: To provide a dust-sucking air passage member, having a small-sized suction port attachment whose downward protrusion can be reduced while being arranged in a retracted position.SOLUTION: A suction port attachment 31, having brush hair 36 embedded in an approximately U-shaped attachment bed 32, is rotatably attached to the leading end portion of a dust-sucking tube 10 having a cover 21 thereon, and thereby, the suction port attachment 31 can be arranged at a using position continuing in a direction to protrude from the leading end portion of the dust-sucking tube 10 and at a retracted position of the leading end portion of the dust-sucking tube 10. An engaging portion 18 is formed on the inner side of the leading end portion of the dust-sucking tube 10. An engaging protrusion 34, which can be engaged into and removed from the engaging portion 18 and which is engaged with the engaging portion 18 to hold the suction port attachment 31 in the using position, is formed on the attachment bed 32 so as to protrude in the direction opposite to the protruding direction of the brush hair 36. The attachment bed 32 has an end edge 32c, which contacts with the leading end face of the cover 21 while the suction port attachment 31 is held in the using position, and the end edge 32c is made to have the substantially same shape as that of the leading end face of the cover 21. |
