Guide device for blowers
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.
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 INVENTIONA conventional blower for inflating inflatable huge kids toys is shown in
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 INVENTIONThe 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.
Referring to
An adjusting device 2 is connected to the air outlet 135 of the case unit 11 and includes a fixed plate 21, a rotatable plate 22 which is rotatably connected to the fixed plate 21. The fixed plate 21 includes a plurality of positioning pins 211 extending from an underside thereof so as to be inserted into holes in the top surface of the curved cover plate 132. A plurality of suction gaps 212 are defined between the fixed plate 21 and the cover plate 132 such that air can be sucked into the case 13 via the suction gaps 212. The fixed plate 21 includes a central hole 213 and a plurality of positioning holes 215, two stops 216 extend from a top of the fixed plate 21 and located beside the two first apertures 214. The rotatable plate 22 includes a pivot 221 on an underside thereof and the pivot 221 is rotatably inserted into the central hole 213. Two handles 222 extend from a top of the rotatable plate 22 so that the user may rotate the rotatable plate 22 by the handles 222. An extension 224 extends radially outward from a periphery of the rotatable plate 22 and can be stopped by one of the stops 216 when rotating the rotatable plate 22 relative to the fixed plate 21. A protrusion 225 extends from an underside of the rotatable plate 22 and is removably engaged with one of the positioning holes 215 to set the rotatable plate 22 relative to the fixed plate 21.
The fixed plate 21 has two first apertures 214 and the rotatable plate 22 having two second apertures 223. When rotating the rotatable plate 22, the second apertures 223 can be adjusted to communicate the first apertures 214 so as to adjust the size of communication of the first and second apertures 214, 223.
When the motor 14 is activated, the air is sucked into the case 13 via the suction gaps 212 and the air inlet 133 via the communicated first and second apertures 214, 223. It is noted that the air sucked into the case 13 is from a certain height from the ground so that less dust, pebbles and garbage is involved.
As shown in
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims
1. A blower comprising:
- a main part including a case unit, a motor and a blade unit, the case unit including an air inlet and an air outlet;
- an adjusting device connected to the air outlet of the case unit and including a fixed plate, a rotatable plate which is rotatably connected to the fixed plate, the fixed plate having two first apertures and the rotatable plate having two second apertures, the rotatable plate being rotated to adjust a size of communication of the first and second apertures.
2. The blower as claimed in claim 1, wherein the fixed plate includes a central hole and a plurality of positioning holes, two stops extend from a top of the fixed plate and located beside the two first apertures.
3. The blower as claimed in claim 1, wherein the rotatable plate includes a pivot on an underside thereof and the pivot is rotatably inserted into the central hole, two handles extend from a top of the rotatable plate, an extension extends radially outward from a periphery of the rotatable plate and a protrusion extends from an underside of the rotatable plate.
4. The blower as claimed in claim 1, wherein the case unit includes a base and a case, the motor is securely received in the base and includes an output shaft which is connected to the blade unit, the case includes a through hole.
5. The blower as claimed in claim 4, wherein at least one heat dispensing hole is defined through a wall of the base so as to cool the motor.
6. The blower as claimed in claim 4, wherein a cover plate is connected to the through hole of the case and the air inlet is defined through the cover plate, an inward and inclined guide surface is defined around the air inlet, the cover plate has a curved top surface which includes a higher central portion and a lower periphery, the case includes the air outlet.
7. The blower as claimed in claim 6, wherein the fixed plate includes a plurality of positioning pins extending from an underside thereof so as to fixedly connected to the top surface of the curved cover plate, a plurality of suction gaps are defined between the fixed plate and the cover plate.
8. The blower as claimed in claim 1, wherein the air inlet is defined in an end of the case and the air outlet is defined in a side of a top of the case, the adjusting device is connected to the end of the case, the first and second apertures are located on the same end with the air inlet.
Type: Application
Filed: Oct 17, 2007
Publication Date: Apr 23, 2009
Inventor: Hua-Chiang Wang (La Verne, CA)
Application Number: 11/907,731