JPH0732746B2 - Vacuum cleaner with rotating brush - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner with a rotating brush that sucks dust by rotating the rotating brush.

2. Description of the Related Art Generally, an electric vacuum cleaner with a rotary brush of this type has a structure as shown in FIG. That is, the power nozzle 1 has a built-in electric motor 2, and is connected to the main body of the cleaner through a hose and an extension pipe in the joint pipe 3. And the rotating brush 4 for releasing the dust attached to the carpet is
It is surrounded by the dust collection chamber 6 and is driven via the electric motor 2. The dust collection chamber 6 is communicated with the joint pipe 3 by a communication pipe 7. In the figure, 8 is a cord, 9 is a bumper, and 10 is a roller for moving the power nozzle.

With such a structure, the dust attached to the carpet or the like is released by the rotating brush 4, and is sucked toward the main body through the communication pipe 7 and the connecting pipe 3 by the suction of the cleaner main body. Here, the force by which the released dust moves from the dust suction chamber 6 to the cleaner body via the communication pipe 7 and the connecting pipe 3 changes depending on the dynamic pressure applied to the dust, and is released as the wind speed becomes faster. The dust is sucked into the main body without returning to the carpet surface.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described conventional configuration, since the power nozzle 1 and the cleaning surface such as the car put are in close contact with each other, the inside of the dust collection chamber 6 is in a semi-sealed state. Therefore, the amount of leaked air in the portion where the cleaning surface of the power nozzle 1 is in close contact with the cleaning surface determines the wind speed at which the dust is moved from the dust suction chamber 6 to the communication pipe 7, and if the amount of leaked air is small, the movement of the dust is moved. The pressure also decreases, and conversely, even if the amount of leaking air becomes too large, a large amount of leaking air is generated from the entire circumference of the opening. Therefore, if the wind velocity in the dust collection chamber 6 is captured, the wind velocity near the communicating pipe 7 and With respect to the wind speed at the end of the rotary brush 4 located farther away, the wind speed at the end of the rotary brush 4 was lower, and the dust absorption performance was poor.

The present invention is to solve the above-mentioned conventional problems, even if the suction port body is in close contact with the cleaning surface and the amount of leaked air is reduced,
It is an object of the present invention to provide an electric vacuum cleaner with a rotating brush that can further increase the suction force by taking in outside air.

Means for Solving the Problems In order to achieve this object, an electric vacuum cleaner with a rotating brush according to the present invention includes a transmission means for transmitting rotation of an electric motor in a suction port body, and a rotating brush rotating through the transmission means. And a suction chamber that surrounds the rotating brush, and a suction port that is provided on one side of the suction chamber and that sucks dust by the back pressure of the electric blower. A communication port for introducing outside air from an outside air intake port formed in a portion other than the dust collection chamber into the dust collection chamber is formed.

Further, in the above structure, the communication port is composed of first and second lattice rows, and the second lattice row is located behind the gap between the first lattice rows.

Further, in the above structure, the air passage area of the communication port is substantially the same as the air passage area of the suction port.

Action With the above configuration, the air volume can be positively taken in from the outside air intake port without depending on the air volume leaked from the close contact portion formed by the suction port main body and the cleaning surface such as the carpet, so that the air volume is increased. At the same time, the dynamic pressure applied to the dust released in the dust collection chamber increases, and the dust collection performance can be improved without returning the dust to the carpet. In addition, since the communication port is provided at one end of the rotating brush and the suction port is provided at the other end, the air flow in the brush chamber is unidirectional and the wind speed is made uniform, which is a part away from the suction port as in the past. The dust collection performance of is no longer bad.

Examples Hereinafter, examples of the present invention will be described with reference to the drawings.

In FIG. 4, reference numeral 12 is an electric vacuum cleaner having an electric blower and a dust collecting section (not shown) built therein. The power nozzle 13 is connected by a hose 15 and an extension pipe 14, and an electric power cord 16 is used for electric power. Connected to each other. The power nozzle
The specific configuration of 13 is as shown in FIG. That is, the power nozzle 13 comprises a chamber 11 provided with a connecting pipe 24, an electric motor 18, rollers 29 and the like, and a dust collection chamber 20 having an opening at the bottom, and a rotary brush 17 is rotatably provided in the dust collection chamber 20. There is. The rotating brush 17 can transmit the rotation of the electric motor 18 via the belt 19. The joint pipe 24 communicates with the dust collecting chamber by a communication pipe 23.

One of the characteristic configurations of this embodiment is that the joint pipe 24,
Room 11 containing the electric motor 18 etc. through a filter
The second characteristic structure is that the electric motor 18 is provided.
The communication port 5 is provided between the chamber 11 containing the dust and the dust collection chamber 20. As shown in FIG. 2, the communication port 25 is composed of a first grid row 25 'and a second grid row 27. The members of the second grid row are located behind the gaps of the first grid row. positioned. Further, the air passage area of the communication port 5 is substantially the same as that of the suction port of the communication pipe 23. In the figure, 21 is a bumper, 22
Is a roller for moving the power nozzle.

Explaining the operation in the above configuration, dust attached to the carpet or the like is released by the rotation of the rotating brush 17,
The released dust passes through the extension pipe 14 and the hose 15 by the back pressure of the electric blower built in the electric vacuum cleaner 12, and the electric vacuum cleaner
Collected in the dust collection part inside 12. The movement of the air in the dust collection chamber 20 at this time is such that the amount of air leaked from the carpet and the opening of the power nozzle 13 flows into the communication pipe 23, and at the same time the air passing through the outside air intake port 26 and the communication port 25 passes through the filter. It is designed to flow into the communication pipe 23. Here, since the air passage area of the communication port 25 is set to be approximately the same as the suction port of the communication pipe 23, a large amount of the latter air flow flows and the communication port
The dust floating in the dust collection chamber between the suction pipe 25 and the suction port of the communication pipe 23 is sucked into the communication pipe 23 due to the large amount of air, that is, the high wind speed, without dropping again to the carpet portion. Therefore, a power nozzle with high dust collection can be realized, and a communication port 25 is provided on one side of the rotary brush 17, and a suction port of the communication pipe 23 is provided on the other end, so that a large amount of air flow over the entire width of the rotary brush 17. Occurs, and the dust absorption performance at the end can be improved.

In addition, a first grid row 25 'and a second grid row 25', as shown in FIG.
By providing the grid row 27 of No. 2, even if the dust scraped up by the rotating brush 17 tries to enter the grid section by coming into contact with the air flow due to the inertial force, the first grid row 25 'and the second grid row 25'
Since it is repelled by the grid row 27, dust enters the inside of the power nozzle 13 or enters the inside of the electric motor 18 to cause a failure of the electric motor 18, and further passes through the outside air intake 26 to fly the dust to the outside. And the dust collection efficiency can be improved.

The one shown in FIG. 5 is provided with ribs 28 for allowing the air flow between the outside air intake 26 ', the communication port 25 and the second grid row 27 to pass through the inside of the electric motor 18. Electric motor
The temperature rise of 18 is prevented. At this time, especially the dust is likely to enter the electric motor 18 and cause a failure, but since the dust is prevented by the first and second grid rows 25 'and 27, the failure due to the dust can be extremely reduced.

EFFECTS OF THE INVENTION As is apparent from the above description of the embodiments, the rotary brush-equipped vacuum cleaner of the present invention has, in the suction port body, a transmission means for transmitting the rotation of the electric motor, and a rotation rotating via the transmission means. A brush, a dust suction chamber that surrounds the rotating brush, and a suction port that is provided on one side of the dust suction chamber and sucks dust by back pressure of an electric blower, and the suction port body is provided on the other side of the dust suction chamber. The dust released by the rotating brush is taken in through the outside air intake port through the outside air intake port by forming a communication port for introducing outside air from the outside air intake port formed in a portion other than the dust intake chamber into the dust absorption chamber. Since it can be sucked together with a large amount of air, high dust collection efficiency can be obtained without redepositing on the carpet or the like. Further, since the air in the dust is drawn from one side of the rotary brush to the suction port, the dust collected by the rotary brush is not dropped and the suction dust collection efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a plan sectional view of an essential part of an electric vacuum cleaner with a rotating brush according to an embodiment of the present invention, FIG. 2 is a perspective view of the same lattice row, FIG. 3 is a perspective view of the same, and FIG. FIG. 5 is a plan sectional view of an essential part of the embodiment, and FIG. 5 is a plan sectional view of an essential part of a conventional example. 13 …… Power nozzle (suction body), 17 …… Rotating brush, 19 …… Belt (transmitting means), 20 …… Dust collection chamber, 23 ……
Communication pipe (suction port), 25 ... Communication port, 26 ... Outside air intake port.

Claims (3)

[Claims] 1. A transmission means for transmitting rotation of an electric motor, a rotary brush rotating via the transmission means, a dust collection chamber surrounding the rotation brush, and a dust collection chamber provided on one side of the dust collection chamber. A suction port for sucking dust by back pressure of the electric blower is provided, and at the other end of the dust suction chamber, the outside air from the outside air intake port formed in a portion other than the dust suction chamber of the suction port body is introduced into the dust suction chamber. An electric vacuum cleaner with a rotating brush that forms a communication port for introduction. 2. The communication port comprises first and second lattice rows,
The vacuum cleaner with a rotating brush according to claim 1, wherein the second grid row is located behind a gap between the first grid rows. 3. An electric vacuum cleaner with a rotary brush according to claim 1, wherein the air passage area of the communication port is substantially the same as the air passage area of the suction port.