JPH0542077A - Vacuum cleaner floor brush - Google Patents

Abstract

(57) [Abstract] [Purpose] In a floor brush of an electric vacuum cleaner equipped with a rotary brush and an electric motor for rotating the rotary brush, air for sucking dust is sent to a deep part of the ridge of the carpet,
Improves dust collection performance. [Structure] The case 21 is provided with an intake port 25, and the shaft 11a
Is formed hollow and a large number of small-diameter nozzle holes 12 are arranged, and a brush or the like is fixed between the rows of nozzle holes 12 to guide the air sucked from the intake port 25 into the shaft body 11a. Blow out from. Intake port 25 to case 2
A filter 26 is provided at the intake port while being provided on the upper surface of 1. A shutter 27 that changes the hole area of the intake port 25 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor brush for an electric vacuum cleaner.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing the overall structure of an electric vacuum cleaner. In the figure, 1 is a floor brush, 2 is an extension pipe, 2a is a hand pipe, 2b is a remote control switch, 3 is a hose made of elastic material such as rubber, 4 is a cleaner body with a built-in electric blower, and 5 is a power cord. is there.

Next, this operation will be described. After connecting the power cord 5 to the power source, hold the hand pipe 2a, press the remote control switch 2b to drive the electric blower in the cleaner body 4, and remove the floor brush 1 fitted to the tip of the extension pipe 2. If it slides along the floor surface, the dust on the floor surface is sucked into the cleaner body 4 through the floor brush 1, the extension pipe 2 and the hose 3 together with the air, and is installed inside the cleaner body 4. It is designed to be collected by a dust filter in the shape of a paper bag.

FIG. 5 is a perspective view of the floor brush 1. An elbow 6 is axially fixed to the rear center portion as shown by an arrow A so as to be vertically movable.
And is connected to the extension pipe 2 via the elbow 6. At this time, the tilt angle of the floor brush 1 with respect to the extension pipe 2 is freely changed by rotating the elbow 6 up and down, so that the lower surface of the floor brush 1 is easily brought into close contact with the floor surface.

FIG. 6 is a plan view of the inside of the floor brush 1, and a part thereof is shown in a sectional view. As shown, the elbow 6 is the floor brush 1
A hollow rotating shaft 6e is inserted and fitted in the rear central part of the floor brush 1 so as to be vertically movable. Reference numeral 7 is a rotary brush, 8 is a belt, 9 is an electric motor, and the rotation of the electric motor 9 is transmitted to the rotary brush 7 by the belt 8. Reference numeral 10 is a control device for the electric motor 9, and reference numeral 10a is a power supply intake portion for supplying power to the control device 10. Reference numeral 11 is a shaft body of the rotary brush 7, and 14 is a blade fixed to the shaft body 11. In addition, 6a is a cylindrical portion of the elbow 6, 6b is an expanded pipe portion which is fitted into the cylindrical portion, and 6c is an extension pipe 2
It is a fitting part that is connected to. Further, the rotating shaft 6e is the cylindrical portion 6
It is formed of a hollow pipe that passes through the center of a and penetrates both side walls and projects to both sides.

Next, this operation will be described. When the bottom surface of the floor brush 1 is brought into close contact with the floor surface, the remote control switch 2b is operated, the electric vacuum cleaner body 4 is operated to absorb dust, and when the floor surface is covered with a carpet or the like, the power is further supplied. A signal is sent to the control device 10 through the intake portion 10a to drive the electric motor 9, and the rotation of the electric motor 9 is transmitted to the rotary brush 7 by the belt 8 to rotate it. In this way, it is also effective for cleaning carpets and the like.

FIG. 7 is a perspective view showing an example of the rotary brush 7 disclosed in Japanese Examined Patent Publication No. 63-35246. In the figure, 11 is a shaft, 14 is a blade, and 14a
Is a small protrusion provided on the blade 14. While rotating this rotary brush 7, the floor brush is rug 15
The dust on the carpet is scraped out by operating it back and forth on the above, and is sucked into the cleaner body 4. In addition, 15
“A” shows the ruggedness of the carpet.

[0008]

In the conventional floor brush of the electric vacuum cleaner as described above, dust is sucked while the surface of the rug is scraped up by the blade 14, and air is prevented from entering around the floor brush. Since it was bad, there was a problem that it was difficult for the dust absorbing air to enter the deep part of the carpet.

As another example of the floor brush, there is a real-life model 61-8.
There is one disclosed in Japanese Patent No. 2545. In this floor brush, a pipe is arranged in parallel with the rotary brush, a large number of air outlets are opened in the pipe, a fan is attached to an electric motor for rotating the rotary brush, and air is sent to the pipe by the fan. Air is blown from the air outlet toward the floor surface of a carpet or the like to improve the dust absorption performance. However, this floor brush has a problem that the floor brush becomes large in size and heavy in weight because a pipe with an air outlet is provided in addition to the rotary brush and a fan is attached to the electric motor. is doing.

The present invention has been made to solve the above problems, in which the shaft of the rotary brush is hollow, a small diameter nozzle hole is provided in the shaft body, and an intake port is provided in the floor brush case. Guide the sucked air into the shaft,
An object of the present invention is to obtain a floor brush of an electric vacuum cleaner in which air is blown to a deep portion of a carpet by blowing the air out of a small diameter nozzle hole.

[0011]

A floor brush for an electric vacuum cleaner according to the present invention is provided with an intake port in the case of the floor brush, the shaft body is formed hollow, and a large number of small-diameter nozzle holes are arranged. A brush or the like is fixed between the rows, and the air sucked from the suction port is guided into the shaft body and blown out from the nozzle hole. Further, the intake port is provided on the upper surface of the case, and the intake port is provided with a filter. Further, a shutter for changing the hole area of the intake port is provided.

[0012]

In the present invention, the air sucked from the air inlet provided in the case of the floor brush is guided to the hollow shaft body and blown out from the nozzle hole provided in the shaft body, and the air is fluffed from the carpet. Enter the deep part of the foot and scrape out the garbage. Further, the intake port and the filter provided on the upper surface of the case prevent clogging of the nozzle hole. In addition, the amount of intake air is adjusted by changing the hole area of the intake port.

[0013]

【Example】

Example 1. 1 is a transverse sectional view showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the same, and FIG. 3 is a perspective view of a floor brush according to an embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 4 to 7 denote the same parts, and 11a is a hollow shaft. Reference numeral 12 is a small-diameter nozzle hole which is formed by penetrating the shaft 11a, and a large number of nozzle holes are formed in a row. A flexible blade 14 is fixed between the rows of nozzle holes 12. In this embodiment, there are two rows of nozzle holes 12.
There are two rows and two blades.

Reference numeral 11b is a hollow bearing mounting member fixed to one end of the shaft body 11a, to which the bearing 18 is fixed. Reference numeral 11c is a terminating member that closes the other end of the shaft body 11a, and the belt gear 19 and the bearing 18 are fixed.
Reference numeral 22 denotes a bearing support member attached to the case 21 for supporting the bearing 18. Numeral 23 is a roller for lightening the movement of the floor brush, which is provided at the lower four corners of the floor brush 1. The illustration is omitted in FIG.

Reference numeral 25 denotes an intake port, which is opened in the upper surface of the case 21. In this embodiment, three elongated holes are provided. Two
6 is a dustproof filter. Intake port 25 and shaft 11a
An enclosure is provided between and so that the intake air from the intake port 25 is guided to the shaft body 11a without leaking to the other.

The floor brush constructed as described above has the following features: when the rotary brush 7 is rotated to clean the carpet,
The air sucked from the intake port 25 passes through the inside of the shaft body 11a and is blown out to the outside as shown by an arrow C. The blown air is blown to the deep part of the carpet's hair as shown by arrow D. The scraping of the dust by the air flow is added to the scraping of the dust by the rotation of the blade 14, and the dust can be smoothly sucked into the cleaner body. Therefore, the dust absorption performance is improved. The arrow E indicates the rotating direction of the rotary brush 7.

Although the intake port 25 is provided on the upper surface of the case 21 in the above embodiment, it may be provided on the side surface. However, since the air having a relatively small amount of dust is sucked into the upper surface from the side surface close to the fluff of the carpet, the clogging of the nozzle holes 12 is reduced. Also, the filter 26 may be omitted,
By providing the filter and providing the intake port 25 on the upper surface, clogging of the nozzle hole is further prevented.

Incidentally, the rotary brush 7 is a rotary brush to which a blade is fixed, but a flocked brush or a comb-like brush (including the blade, these are referred to as a brush or the like) is fixed. Also has the same effect. 1 is a sectional view taken along the line AA of FIG.
FIG. 2 is a sectional view taken along the line BB of FIG.

Example 2. In FIG. 2, reference numeral 27 denotes a shutter, which slides in the direction of arrow F to adjust the hole area of the intake port. Since the length of the fluff of the carpet depends on the type of shagi, cut pile, loop pile, and the like, the amount of air to be sucked in is changed by changing the hole area of the intake port 25 by irradiating the shutter 27. Therefore, the amount of air blown from the nozzle hole can be adjusted according to the type of carpet. The shutter 27 is not shown in FIG.

[0020]

As described above, according to the present invention, the case is provided with the intake port, the shaft is formed in a hollow shape, a large number of small diameter nozzle holes are arranged, and a brush or the like is fixed between the rows of nozzle holes. Guide the air sucked from the intake port to the inside of the shaft,
Since the air is blown out from the nozzle hole, the dust-absorbing air penetrates deep into the fur of the carpet and scraps out the dust. Therefore, the dust absorption performance is improved. Further, since the intake port is provided on the upper surface of the case and the filter is provided at the intake port, clogging of the nozzle hole is prevented. Further, since the shutter for changing the hole area of the intake port is provided, the amount of air blown out from the nozzle hole can be adjusted according to the type of carpet.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing an embodiment of the present invention.

FIG. 3 is a perspective view of a floor brush according to an embodiment of the present invention.

FIG. 4 is a perspective view showing the configuration of the entire electric vacuum cleaner.

FIG. 5 is a perspective view of a conventional floor brush.

FIG. 6 is an internal plan view of a conventional floor brush.

FIG. 7 is a perspective view showing a conventional rotary brush.

[Explanation of symbols]

 1 Floor Brush 7 Rotary Brush 9 Electric Motor 11a Shaft Body 12 Nozzle Hole 14 Blade 25 Intake Port 26 Filter 27 Shutter

Claims (3)

[Claims] 1. A floor brush of an electric vacuum cleaner, comprising a rotary brush rotatably disposed in a case, a shaft and the like having a brush attached thereto, and an electric motor for rotating the rotary brush. An intake port is provided in the shaft body, the shaft body is formed hollow, a large number of small-diameter nozzle holes are arranged, and a brush or the like is fixed between the rows of the nozzle holes, so that the air sucked from the intake port is transferred to the shaft body. The floor brush of the electric vacuum cleaner, characterized in that the air is guided into the interior of the vacuum cleaner and the air is blown out from the nozzle hole. 2. The floor brush for a vacuum cleaner according to claim 1, wherein the intake port is provided on the upper surface of the case and the intake port is provided with a filter. 3. The floor brush for an electric vacuum cleaner according to claim 1, further comprising a shutter for changing a hole area of the intake port.