Guide device for blowers

Abstract: A blower includes an adjusting device connected to the air outlet of the case unit and the adjusting device includes a fixed plate, a rotatable plate which is rotatably connected to the fixed plate. The fixed plate includes two first apertures and the rotatable plate includes two second apertures. The rotatable plate is rotated to adjust a size of communication of the first and second apertures so as to control the volume of air that is sucked into the blower. (end of abstract)

Guide device for blowers description/claims

Brief Patent Description

Full Patent Description

Patent Application Claims

FIELD OF THE INVENTION

The present invention relates to a blower and more particularly, to a guide device of a blower and the guide device controls the volume of inlet air into the blower.

BACKGROUND OF THE INVENTION

A conventional blower for inflating inflatable huge kids toys is shown in FIGS. 9 and 10, and generally includes a base 3 which has a top hole 32 so that a motor 4 is inserted into the base 3 and fixed on a top of the base 3. The motor 4 drives a blade unit 41 which generates suction force to suck air into a case 5 fixed on the top of the base 3. The case 5 has an outlet 51 which is connected with the inflatable items so as to inflate the inflatable items by air. The base 3 includes at least one inlet 31 defined in a side of the base 3 so as to suck air into the base 3 and sends the air to the inflatable items. However, the conventional blower cannot adjust the volume that is to be sent into the inflatable items and wastes a lot of energy to keep the motor 4 to run so as to maintain the inflatable items in good shapes. Besides, the base 3 generally sits on the ground and dust, pebbles, or even small garbage is sucked into the inflatable items.

The present invention intends to provide a blower having an adjustable guide device which is able to adjust the volume of air that is sucked into the blower so that the blower can be used to inflate inflatable items of different sizes.

SUMMARY OF THE INVENTION

The present invention relates to a blower that comprises a main part including a case unit, a motor and a blade unit. The case unit includes an air inlet and an air outlet. An adjusting device is connected to the air outlet of the case unit and includes a fixed plate, a rotatable plate which is rotatably connected to the fixed plate. The fixed plate has two first apertures and the rotatable plate has two second apertures. The users rotate the rotatable plate to adjust a size of communication of the first and second apertures to control the volume of air into the blower.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view to show the blower and the guide device of the present invention;

FIG. 2 is a perspective view to show the blower with the guide device of the present invention;

FIG. 3 is a cross sectional view to show the blower with the guide device of the present invention;

FIG. 4 shows that the first and second apertures are fully opened;

FIG. 5 shows that the first and second apertures are partially opened;

FIG. 6 shows that the first and second apertures are completely closed;

FIG. 7 shows the other embodiment of the blower wherein the adjusting device is connected to a side of the main part of the blower;

FIG. 8 is a cross sectional view to show the blower in FIG. 7;

FIG. 9 is an exploded view to show a conventional blower, and

FIG. 10 is a perspective view to show the conventional blower.

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