PURPOSE: To easily mount a mount for mounting by guiding it with a rib by providing plural ribs enclosing the outer periphery of the mount for mounting a dust collection bag at the lower part and both side parts of an inlet.

CONSTITUTION: A motor with blower is incorporated in the lower terminal part of a cleaner main body 1, and a dust collection chamber is formed on the upper part of the motor, and the dust collection bag is mounted on the dust collection chamber, and a floor nozzle 10 is mounted rotatably freely on the lower end part of the cleaner main body 1, and a cylindrical inlet 9 with a size a little larger than that of a mounting and suction hole 15 of a mount 17 for mounting of the dust collection bag is provided at the rear inside part of the dust collection chamber of the cleaner main body 1. Therefore, plural both side part ribs 21 and plural lower part ribs 22 all of which guide the mount 17 for mounting enclosing the outer periphery of the mount 17 for mounting provided at the lower parts and both side parts of the inlet 9. The mounting of the dust collection bag can be performed by guiding the mount 17 for mounting by the both side part ribs 21 and the lower part ribs 22 when the dust collection bag is mounted and easily and surely press-inserting the inlet 9 to the mounting and suction hole 15 of the mount 17 for mounting.