JPS6018136A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a soundproofing device for a vacuum cleaner.

Conventional configurations and their problems Traditionally, in order to reduce the noise of electric blowers, various types of soundproofing boards were stacked in layers and exhaust air was passed between them for soundproofing, or the exhaust passage was made long and soundproofing was done on the internal wall of the main unit. Methods have been used to reduce noise by absorbing sound, but using many soundproofing boards increases the cost, and making the exhaust passage long and pasting soundproofing material requires time and effort to assemble. However, the main body itself is large.

OBJECTS OF THE INVENTION The present invention eliminates these conventional drawbacks and effectively utilizes the exhaust passage to reduce noise.

Composition of the invention The vacuum cleaner of the present invention has a rear part of an electric blower.

A cylindrical body having a ventilation hole on a side circumferential surface is covered, a rear partition wall having a ventilation hole is provided at the rear of the cylinder body, and an exhaust guide portion is provided at a position opposite to the ventilation hole of the rear partition wall at the rear part of the cylinder body. The formed exhaust guide plate and a filter provided to cover the exhaust port of the main body are respectively provided, and the exhaust gas is communicated with the exhaust guide portion and passes through an exhaust passage formed by the rear bulkhead, the inner wall of the main body, and the exhaust guide plate. The intended purpose was achieved by discharging the exhaust gas into the outside air.

DESCRIPTION OF EMBODIMENTS Below, the embodiments will be explained based on the drawings.
1 is the bottom of the main unit, with a dust collection bag 2 degrees in the front and an electric blower 3 in the rear.
It has a built-in air intake hole 4 between the dust collection bag 2 and the electric blower 3.
010 is an upper part of the main body, and a front wheel 6 and a rear wheel 7 for movement are provided at the lower part, and an intake port 8 for connecting a hose and a handle 9 are provided at the front part. , 11 is a bottom plate fixed to the lower part 1 of the main body with screws etc., 12 is a dust collection lid removably provided on the front upper surface of the lower part 1 of the main body, and a hook 13 formed at the rear part is attached to the upper part 10 of the main body. The other end is engaged with the upper lid 14 of the main body, and the other end is locked with the lower part 1 of the main body by a buckle 15. The electric blower 3 is held by a front shock absorber 16 and a rear shock absorber 17, and is sandwiched between an upper main body 10 and a bottom plate 11 via a cylindrical body 18 that covers the rear part of the electric blower 3.

A soundproof plate 19 is provided between the electric blower 3 and the cylindrical body 18. Reference numeral 2o denotes a rear partition wall, the periphery of which is sandwiched between ribs 21 on the upper part 1o of the main body and ribs 22 on the lower part 1 of the main body, and separates the electric blower 3 storage chamber 23 from the rear space 24. 25 is an exhaust guide plate, the lower end of which is connected to the rib 26 of the lower part 1 of the main body and the rear bulkhead 2.
One of the upper ends is held down by the upper part 10 of the main body, and the other end is held by inserting the claw 2T into the hole 28 of the rear partition wall 20. 29 is a filter that covers the exhaust port 3° formed in the lower part 1 of the main body.

With the above configuration, the dust sucked by the electric blower 3 is collected in the dust collection bag 2, and only clean air is guided into the electric blower 3 through the intake hole 4 of the partition wall 5, and passed through the discharge port 31 into the tube. It comes out inside the body 18.

Then, it passes through the soundproof plate 19 and passes through the ventilation hole 32 on the side of the cylinder body 18.
Exit to storage room 23 through . At this time, the exhaust air is first
9 and hits the cylindrical body 18, then flows along the inner circumference of the cylindrical body 18, and comes out from the ventilation hole 32. Even better soundproofing effects can be obtained by emitting direct sound to the outside.

Furthermore, the air discharged from the cylinder 18 is guided to the rear space 24 through the ventilation hole 33 of the rear partition wall 20.

The air that has passed through the rear bulkhead 20 first hits the triangular exhaust guide part 34 of the exhaust guide plate 25, and then runs along the surface of the exhaust passage formed by the upper part 1o of the main body at a substantially right angle with the flow side part 35. After being bent and flowing along the side wall of the lower part 1 of the main body, it passes through the filter 29 and is discharged to the outside air from the exhaust port 3C. Since the air that has passed through the rear bulkhead 2o hits the exhaust guide plate 25 once, it is directly emitted from the exhaust port 30 as sound.Furthermore, even if the rear space 24 is narrow in the front-rear direction, the air passage can be effectively utilized by effectively utilizing the space. becomes larger and the exhaust flow velocity decreases. In general, wind noise is proportional to the wind speed to the 8th to 16th power, so the exhaust wind noise decreases as the flow velocity decreases. Furthermore, since the exhaust passage can be made long and the exhaust flow can be rectified, the noise reduction effect is also increased. Further, since the exhaust guide plate 25 is a single component, it is easy to assemble, and also serves as a fixing member for the filter 29, which is highly effective. In the above embodiment, the rear bulkhead and the exhaust guide plate were explained as separate parts, but the same effect can be applied even when they are formed integrally or when the rear bulkhead is formed from a rib provided integrally with the upper part 1o of the main body and the lower part 1 of the main body. The following effects can be obtained, and the number of parts can be reduced and assembly can be made easier.

Effects of the Invention According to the present invention as described above, a device with a small number of parts, easy to assemble, and good soundproofing effect can be obtained, which is of great value.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a vacuum cleaner showing an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is a cross-sectional view of the rear partition wall.
FIG. 4 is an exploded perspective view. 3... Electric blower, 18... Cylindrical body, 20
... Rear bulkhead, 25 ... Exhaust guide plate, 29
... Filter, 39 ... Exhaust port, 33.
34...Vent hole.

Claims (2)

[Claims] (1) At the rear of the electric blower, a winter cylinder with ventilation holes on the side peripheral surface is covered, and a rear partition wall with ventilation holes at the rear of the cylinder,
Furthermore, an exhaust guide plate having an exhaust guide section formed at a position opposite to the ventilation hole of the rear bulkhead and a filter provided to cover the exhaust port of the main body are provided at the rear thereof, and after communicating with the exhaust guide section, an exhaust guide plate is provided. A vacuum cleaner in which exhaust gas is discharged into the outside air after passing through an exhaust passage formed by a partition wall, an inner wall of the main body, and an exhaust guide plate. (2) The vacuum cleaner according to claim 1, wherein the rear partition wall and the exhaust guide plate are integrally formed.