JP2927639B2 - Vacuum cleaner suction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device having a rotating brush for a canister type or upright type vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, a suction device of a vacuum cleaner is shown in FIG.
9, a rotating brush 4 rotatably supported by a suction device main body 3 composed of an upper case 1 and a lower case 2, a motor 5 for driving the rotating brush 4 to rotate, and a motor 5
And a protection circuit board 6 as a safety device.

The rotary brush 4 is provided with a rubber blade (or bristle brush) 7 for scraping up dust on its outer peripheral surface, and is rotated by a motor 5 via a timing belt 8. The dust rubbed up by the rubber blade (or bristle brush) 7 from the suction port 9 by the rotation of the rotary brush 4 is sucked by a suction air flow generated by a suction force of a blower (not shown) on the cleaner body side. Dust is collected through the pipe 10 into the cleaner body.

[0004]

The suction performance of the vacuum cleaner, except for the suction force (the performance of the blower) of the main body of the vacuum cleaner, removes the scraping ability of the rotary brush 4 of the suction device and the scraped dust. Is determined by the wind speed of the suction airflow in the vicinity of the suction port 9.

However, with respect to the scraping ability of the rotary brush 4, various measures such as the shape and hardness of the rubber blade or bristle brush of the rotary brush 4 have been conventionally performed. The improvement had almost reached its limit.

On the other hand, as for the suction air flow at the suction port 9, the magnitude of the opening air flow rate of the suction air flow is determined by the size of the opening area of the suction port 9 (the smaller the suction port, the higher the wind speed).
Since the size of the suction port 9 needs to be such that the blade 7 of the rotating brush 4 does not hit the suction port 9, the opening area of the suction port 9 cannot be reduced, and a large wind speed cannot be obtained. Was.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a suction device for a vacuum cleaner that increases the wind speed of a suction airflow at a suction port to improve suction performance.

[0008]

Means for Solving the Problems According to the first aspect of the present invention, a suction port 2 is provided on a bottom surface 21 of a suction device main body 20.
2 is formed, and a rotary brush 23 is provided on the suction device main body 20.
The rotating brush 23 is located on the suction device body 20 sideways.
A rotating body 29 rotatably supported via a shaft 30 is provided.
The outer circumferential surface of the rotating body 29 is
Has a width to close a part of the suction port 22 in the direction
Closed bodies 39 and multiple floor
A cleaning body 40 is provided along the axial direction, and each closing body 39 is provided.
Is to divide the outer peripheral surface of the rotating body 29 into two in the axial direction or
The length should be divided more than that, and in the circumferential direction
It is mounted with a constant phase difference of 180 degrees, 120 degrees, or the like .

According to a second aspect of the present invention, there is provided a cleaning device comprising:
0 is provided with a closing body 39 on the outer peripheral surface of the rotating body 29.
The cleaning body 40 and the closing body 39
They are arranged alternately in the axial or circumferential direction .

[0010] The means for solving the problems according to claim 3 is a column-shaped solution .
A substantially semicircular closing body 39 is attached to the outer peripheral surface of the rotating body 29 symmetrically in the axial direction by 180 degrees.

According to a fourth aspect of the present invention, there is provided:
The surface of 9 is the wiping member 41 from the floor.

[0012]

According to the first aspect of the present invention, when the floor is cleaned, the motor 37 is driven to rotate the rotating brush 2.
When 3 is rotated, the closing body 39 of the rotating brush 23 closes a part of the suction port 22 and the rest is open. Therefore, since the opening area of the suction port 22 is reduced, a quick suction airflow is obtained, and the suction performance is improved.

In the means for solving problems according to the second aspect, since the closing body 39 closes a part of the suction port 22 and the cleaning body 40 scrapes dust on the floor from the remaining opening side of the suction port 22, the dust is removed. It can inhale efficiently.

In the means for solving problems according to the third aspect, each time the rotary brush 23 is rotated by 180 degrees, the opening side and the closing side are alternately switched at the suction port 22, so that the suction can be performed without leaving any dust.

According to the fourth aspect of the present invention, since the wiping member 41 can wipe and clean the floor of the surface of the closing member 39, dust can be sucked and wiped and cleaned at the same time.

[0016]

1 is a perspective view of a rotary brush of a suction device of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the suction device of the present embodiment, and FIG. 3 is a cross-sectional view of the suction device. FIG. 4 is a cross-sectional view of the suction device in a state in which the closing body of the rotating brush blocks the suction port, and FIG. 5 is a diagram illustrating a relationship between the wind speed near the suction port and the rotation time of the rotating brush.

As shown in FIGS. 2 and 3, the suction device of the vacuum cleaner according to the present embodiment has a suction port 2 on a bottom surface 21 of a suction device main body 20.
2 and a rotating brush 23 is provided on the apparatus main body 20. The suction device body 20 includes an upper case 24.
And a lower case 25, and a bumper 26 is provided on the outer periphery of the apparatus main body 20. The lower case 25 has the rectangular suction port 22, the rotating brush 23 is arranged so as to face the suction port 22, and a suction pipe 27 is rotatably supported at a rear portion. The suction port 22 is connected to a dust collecting chamber (not shown) in the main body of the cleaner through an inlet pipe 27, a suction pipe 28, and an extension pipe and a hose.

As shown in FIG. 1, the rotating brush 23 has a rotating body 29 formed in a cylindrical shape, and a horizontal shaft 30 inserted at both ends of the rotating body 29. Have been. The horizontal shaft 30 is rotatably supported by a bearing 32, and the bearing 32 is supported by a bearing support 33 of the lower case 25.
Is fitted. A gear 34 is externally fitted and fixed to one side of the holder 31, and a gear 37 is externally fitted and fixed to a rotating shaft 36 of a rotary brush driving motor 35 arranged rearward from the suction port 22. An endless belt 38 is stretched between the motor 35 and the gear 37 of the motor 35, and the rotating brush 23 is driven to rotate by the motor 35.

On the outer peripheral surface of the rotating body 29, a closing body 39 for closing a part of the suction port 22 and a cleaning body 40 for scraping dust on the floor are mounted along the axial direction. .

The closing member 39 is formed in a substantially semicircular shape.
The rotary brush 23 is attached at two locations symmetrically at 180 degrees in the rotation axis direction so as to divide the rotary brush 23 into two parts, and the closing body 39 is formed to have a thickness such that it slightly projects from the suction port 22 to the floor surface side. Then, the rotating brush 23 rotates, and the closing body 39 closes half of the suction port 22 in the rotation axis direction.
Is rotated by 180 degrees, the other closing body 39 closes the other half of the suction port 22. In addition, the surface of the closing body 39 is wiped from a floor surface such as a felt or a sponge.
1.

The cleaning body 40 is a plate-like blade made of rubber, vinyl chloride, or the like. The cleaning body 40 is helically projected at a 180-degree symmetrical position on the outer peripheral surface of the rotating body 29 where the closing body 39 is not provided. Have been. And the blade 40
Is formed so as to protrude from the suction port 22 to the floor surface side and abut on the floor surface.

In the drawing, reference numeral 42 denotes a protection circuit board, 43 denotes a front wheel, and 44 denotes a rear wheel.

In the above configuration, when cleaning the floor surface,
The motor 37 is driven to rotate the rotating brush 23. Then, the closing body 39 of the rotating brush 23 alternately opens and closes the left and right halves of the suction port 22 every half rotation of the rotating brush 23 as shown in FIG. At this time, the opening area of the suction port 22 is halved, and the speed of the suction airflow generated on the opening side of the suction port 22 is about the speed of the wind when the suction port 22 is fully opened as shown in FIG. It is twice as fast. The wind speed of the other suction port 22 on the closed side is not completely closed, but is almost zero.

Here, when the rotating operation of the rotary brush 23 is instantaneously viewed, when one half of the suction port 22 is open, the other half of the suction port 22 is closed by the closing body 39. This means that cleaning can be performed using only half of the suction port 22. However, the rotating speed of the rotating brush 23 is as high as about 5000 rpm, and the speed at which the user moves the suction device body 20 during cleaning is about 0.5.
Since the speed is as low as m / sec, dust is actually sucked from all the openings of the suction port 22, so that the cleaning ability does not decrease and there is no problem.

Then, the blade 40 scrapes off dust on the floor surface from the opening side of the suction port 22, and the dust is sucked up to the cleaner body by the fast suction air flow, and the closing body 39 is moved to the other half of the suction port 22. And the wiping member 41 wipes the floor surface from the floor surface.

By closing half of the opening of the suction port 22 with the closing body 39 in this manner, the other suction port 22 is closed.
The wind speed of the suction airflow from the opening side of the nozzle is doubled, and the suction performance of the vacuum cleaner is improved.

The closing body 39 is formed in a substantially semicircular shape,
If the rotary brush 23 is mounted 180 degrees symmetrically in the rotation axis direction, the suction port 2
Since the left and right halves of 2 can be opened and closed quickly and alternately, no dust is left behind on the closed side of the suction port 22. Moreover, since the blade 40 is mounted at a position where the closing member 39 of the rotating brush 23 is not mounted,
Waste can be scraped out and sucked in efficiently.

Furthermore, since the wiping member 41 can perform wiping cleaning from the floor surface on the surface of the closing member 39, suction and wiping cleaning can be performed at the same time, and the closed side of the suction port 22 is not wasted.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that many modifications and changes can be made to the above-described embodiment within the scope of the present invention.

For example, in the present embodiment, two closing members 39 are mounted symmetrically at 180 degrees along the rotation axis direction of the rotating brush 23, but three or more closing members may be provided as shown in FIG. Also, as shown in FIG.
It may be divided into 120 degrees.

The closing body 39 may be formed densely using a bristle brush. Further, the cleaning body 40 is not limited to the blade, but may be a bristle brush.

[0032]

As is apparent from the above description, according to the first aspect of the present invention, since the opening area of the suction port is reduced by closing a part of the suction port with the closing body, the opening of the suction port which is not blocked is reduced. The wind speed of the suction airflow from the opening side increases. Therefore, the suction power of dust increases, and the suction performance of the vacuum cleaner improves.

According to the second aspect, the dust is scraped up from the opening side of the suction port by the cleaning body, so that the dust can be sucked in efficiently.

According to the third aspect of the present invention, the closing body is formed in a substantially semicircular shape and is mounted symmetrically at 180 degrees in the direction of the rotating shaft of the rotating brush. The opening side and the closing side can be quickly and alternately switched. Therefore, since the suction port is not always in a closed state, there is no remaining suction of dust, and cleaning can be performed effectively.

According to the fourth aspect, there is an excellent effect that wiping and cleaning can be performed at the same time as dust is sucked by the wiping member from the floor on the surface of the closing body, and the closed side of the suction port is not wasted.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rotating brush of a suction device of a vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the suction device of the present embodiment.

FIG. 3 is a sectional view of a suction device.

FIG. 4 is a cross-sectional view of the suction device in a state where a closing body of the rotary brush blocks a suction port.

FIG. 5 is a diagram showing a relationship between a wind speed of a suction airflow at a suction port and a rotation time of a rotary brush.

FIG. 6 is a perspective view of a rotating brush showing another embodiment.

FIG. 7 is a perspective view of a rotating brush showing another embodiment.

FIG. 8 is a cross-sectional view of a suction device of a conventional vacuum cleaner.

FIG. 9 is a sectional view of a conventional suction device.

[Explanation of symbols]

 Reference Signs List 20 suction device main body 21 suction device bottom surface 22 suction port 23 rotating brush 39 closing member 40 blade 41 wiping member from floor surface

Claims (4)

(57) [Claims] 1. A suction port is formed in a bottom surface of a suction device main body, and a rotary brush is provided on the suction device main body. The rotary brush is rotatably supported on the suction device main body via a horizontal axis.
A rotating body, and the rotating body is provided on an outer peripheral surface of the rotating body.
In the circumferential direction of the suction port so as to block a part of the suction port.
Multiple blockers and multiple floor scrapers
A cleaning body is provided along the axial direction, and each closing body is
The length is such that the outer peripheral surface of the rotating body is divided into a plurality in the axial direction,
A suction device for a vacuum cleaner, wherein the suction device is attached with a constant phase difference in a circumferential direction . 2. The cleaning body is provided with a closing body on the outer peripheral surface of the rotating body.
It is attached to a position that is not
2. The suction device for a vacuum cleaner according to claim 1, wherein the suction devices are alternately arranged in an axial direction or a circumferential direction . 3. A suction device for a vacuum cleaner according to claim 1, wherein a substantially semicircular closing member is mounted on the outer peripheral surface of the cylindrical rotating member so as to be symmetrical with respect to the axial direction by 180 degrees. apparatus. 4. The suction device for a vacuum cleaner according to claim 1, wherein a surface of the closing body is a wiping member from a floor surface.